/* roulang page: index */
:root {
            --primary: #0D6EFD;
            --primary-light: #3B8BFF;
            --primary-bg: #EBF3FA;
            --primary-soft: #D6E8FB;
            --primary-dark: #1565C0;
            --primary-deep: #0A4A9E;
            --accent-orange: #FF6F00;
            --accent-orange-hover: #E56500;
            --accent-orange-light: #FFF3E6;
            --gray-50: #F8F9FA;
            --gray-100: #F5F7FA;
            --gray-150: #EEF1F5;
            --gray-200: #E9ECEF;
            --gray-300: #DEE2E6;
            --gray-400: #ADB5BD;
            --gray-500: #6C757D;
            --gray-600: #495057;
            --gray-700: #343A40;
            --gray-800: #212529;
            --gray-900: #1A1D21;
            --footer-bg: #1E293B;
            --footer-text: #B0B8C4;
            --white: #FFFFFF;
            --card-shadow: 0 4px 12px rgba(0, 0, 0, 0.04);
            --card-shadow-hover: 0 8px 24px rgba(0, 0, 0, 0.08);
            --card-shadow-lg: 0 12px 32px rgba(0, 0, 0, 0.06);
            --radius-sm: 8px;
            --radius-md: 12px;
            --radius-lg: 16px;
            --radius-xl: 20px;
            --radius-chip: 20px;
            --spacing-xs: 8px;
            --spacing-sm: 16px;
            --spacing-md: 24px;
            --spacing-lg: 40px;
            --spacing-xl: 60px;
            --spacing-2xl: 80px;
            --spacing-3xl: 100px;
            --transition-fast: 0.2s ease;
            --transition-normal: 0.3s ease;
            --nav-height: 72px;
            --container-max: 1320px;
        }

        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }

        html {
            scroll-behavior: smooth;
            scroll-padding-top: var(--nav-height);
        }

        body {
            font-family: 'PingFang SC', 'Microsoft YaHei', 'Helvetica Neue', Arial, sans-serif;
            font-size: 16px;
            line-height: 1.8;
            color: var(--gray-800);
            background-color: var(--white);
            background-image: linear-gradient(180deg, #F8FAFD 0%, #FFFFFF 100%);
            background-attachment: fixed;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            overflow-x: hidden;
            padding-top: var(--nav-height);
        }

        a {
            color: var(--primary-dark);
            text-decoration: none;
            transition: color var(--transition-fast);
        }
        a:hover {
            color: var(--primary-deep);
            text-decoration: none;
        }
        a:focus-visible {
            outline: 2px solid var(--primary);
            outline-offset: 3px;
            border-radius: 4px;
        }

        img {
            max-width: 100%;
            height: auto;
            display: block;
        }

        button,
        input,
        select,
        textarea {
            font-family: inherit;
            font-size: inherit;
        }

        .container-custom {
            max-width: var(--container-max);
            margin: 0 auto;
            padding: 0 var(--spacing-md);
        }
        @media (max-width: 768px) {
            .container-custom {
                padding: 0 var(--spacing-sm);
            }
        }

        /* ========== NAVIGATION ========== */
        .site-nav {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1050;
            height: var(--nav-height);
            background: var(--white);
            border-bottom: 1px solid var(--gray-200);
            display: flex;
            align-items: center;
            transition: box-shadow var(--transition-normal);
        }
        .site-nav.scrolled {
            box-shadow: 0 2px 16px rgba(0, 0, 0, 0.06);
        }
        .nav-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            width: 100%;
            max-width: var(--container-max);
            margin: 0 auto;
            padding: 0 var(--spacing-md);
            height: 100%;
        }
        .nav-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 22px;
            font-weight: 700;
            color: var(--primary-dark);
            white-space: nowrap;
            flex-shrink: 0;
        }
        .nav-logo .logo-icon {
            width: 40px;
            height: 40px;
            background: var(--primary);
            border-radius: var(--radius-sm);
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-size: 18px;
            font-weight: 700;
            flex-shrink: 0;
        }
        .nav-logo:hover {
            color: var(--primary-deep);
        }
        .nav-chips {
            display: flex;
            align-items: center;
            gap: 6px;
            flex-wrap: nowrap;
            overflow-x: auto;
            scrollbar-width: none;
            -ms-overflow-style: none;
            padding: 0 4px;
        }
        .nav-chips::-webkit-scrollbar {
            display: none;
        }
        .nav-chip {
            display: inline-flex;
            align-items: center;
            padding: 8px 16px;
            border-radius: var(--radius-chip);
            font-size: 14px;
            font-weight: 500;
            color: var(--primary-dark);
            background: transparent;
            border: 1px solid var(--primary-soft);
            white-space: nowrap;
            transition: all var(--transition-fast);
            cursor: pointer;
            text-decoration: none;
            flex-shrink: 0;
        }
        .nav-chip:hover {
            background: var(--primary-bg);
            border-color: var(--primary);
            color: var(--primary-deep);
        }
        .nav-chip.active {
            background: var(--primary);
            color: #fff;
            border-color: var(--primary);
            font-weight: 600;
        }
        .nav-cta {
            display: inline-flex;
            align-items: center;
            padding: 10px 22px;
            border-radius: var(--radius-sm);
            font-size: 14px;
            font-weight: 600;
            background: var(--accent-orange);
            color: #fff;
            border: none;
            white-space: nowrap;
            transition: all var(--transition-fast);
            cursor: pointer;
            text-decoration: none;
            flex-shrink: 0;
            letter-spacing: 0.5px;
        }
        .nav-cta:hover {
            background: var(--accent-orange-hover);
            color: #fff;
            transform: translateY(-1px);
            box-shadow: 0 4px 14px rgba(255, 111, 0, 0.35);
        }
        .nav-hamburger {
            display: none;
            background: none;
            border: none;
            font-size: 24px;
            color: var(--gray-700);
            cursor: pointer;
            padding: 8px;
            line-height: 1;
        }
        @media (max-width: 992px) {
            .nav-chips {
                display: none;
                position: absolute;
                top: var(--nav-height);
                left: 0;
                right: 0;
                background: var(--white);
                flex-direction: column;
                gap: 2px;
                padding: var(--spacing-sm);
                border-bottom: 1px solid var(--gray-200);
                box-shadow: 0 8px 24px rgba(0, 0, 0, 0.08);
                z-index: 1049;
            }
            .nav-chips.show {
                display: flex;
            }
            .nav-chip {
                width: 100%;
                text-align: center;
                justify-content: center;
                padding: 12px 16px;
                border-radius: var(--radius-sm);
                border: 1px solid transparent;
                font-size: 15px;
            }
            .nav-hamburger {
                display: block;
            }
            .nav-cta {
                padding: 8px 16px;
                font-size: 13px;
            }
        }
        @media (max-width: 520px) {
            .nav-logo {
                font-size: 18px;
            }
            .nav-logo .logo-icon {
                width: 32px;
                height: 32px;
                font-size: 14px;
            }
            .nav-cta {
                padding: 6px 12px;
                font-size: 12px;
                border-radius: 6px;
            }
        }

        /* ========== SECTIONS ========== */
        section {
            padding: var(--spacing-2xl) 0;
            position: relative;
        }
        @media (max-width: 768px) {
            section {
                padding: var(--spacing-xl) 0;
            }
        }
        .section-label {
            display: inline-block;
            font-size: 13px;
            font-weight: 600;
            letter-spacing: 1.5px;
            text-transform: uppercase;
            color: var(--primary);
            margin-bottom: var(--spacing-xs);
            background: var(--primary-bg);
            padding: 4px 14px;
            border-radius: var(--radius-chip);
        }
        .section-title {
            font-size: 28px;
            font-weight: 700;
            color: var(--gray-900);
            margin-bottom: var(--spacing-sm);
            line-height: 1.3;
        }
        .section-desc {
            font-size: 16px;
            color: var(--gray-600);
            line-height: 1.8;
            max-width: 720px;
        }
        @media (max-width: 768px) {
            .section-title {
                font-size: 22px;
            }
            .section-desc {
                font-size: 15px;
            }
        }

        /* ========== HERO SECTION ========== */
        .hero-section {
            padding: 0;
            min-height: 580px;
            display: flex;
            align-items: center;
            background: linear-gradient(160deg, #EBF3FA 0%, #F0F6FC 30%, #F8FAFD 60%, #FFFFFF 100%);
            position: relative;
            overflow: hidden;
        }
        .hero-section::before {
            content: '';
            position: absolute;
            top: -60px;
            right: -80px;
            width: 500px;
            height: 500px;
            background: radial-gradient(circle, rgba(13, 110, 253, 0.06) 0%, transparent 70%);
            border-radius: 50%;
            pointer-events: none;
        }
        .hero-section::after {
            content: '';
            position: absolute;
            bottom: -40px;
            left: -100px;
            width: 400px;
            height: 400px;
            background: radial-gradient(circle, rgba(255, 111, 0, 0.04) 0%, transparent 70%);
            border-radius: 50%;
            pointer-events: none;
        }
        .hero-bg-img {
            position: absolute;
            right: 0;
            top: 0;
            width: 48%;
            height: 100%;
            object-fit: cover;
            opacity: 0.18;
            pointer-events: none;
            mask-image: linear-gradient(to left, rgba(0, 0, 0, 0.3) 0%, transparent 100%);
            -webkit-mask-image: linear-gradient(to left, rgba(0, 0, 0, 0.3) 0%, transparent 100%);
        }
        .hero-inner {
            position: relative;
            z-index: 2;
            display: flex;
            align-items: center;
            gap: var(--spacing-xl);
            padding: var(--spacing-3xl) 0;
            flex-wrap: wrap;
        }
        .hero-content {
            flex: 1;
            min-width: 300px;
        }
        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            background: var(--accent-orange);
            color: #fff;
            padding: 6px 14px;
            border-radius: var(--radius-chip);
            font-size: 13px;
            font-weight: 700;
            letter-spacing: 0.5px;
            margin-bottom: var(--spacing-md);
            animation: pulse-badge 2.2s ease-in-out infinite;
        }
        @keyframes pulse-badge {
            0%,
            100% {
                box-shadow: 0 0 0 0 rgba(255, 111, 0, 0.4);
            }
            50% {
                box-shadow: 0 0 0 14px rgba(255, 111, 0, 0);
            }
        }
        .hero-badge .live-dot {
            width: 8px;
            height: 8px;
            background: #fff;
            border-radius: 50%;
            animation: blink-dot 1s ease-in-out infinite;
        }
        @keyframes blink-dot {
            0%,
            100% {
                opacity: 1;
            }
            50% {
                opacity: 0.3;
            }
        }
        .hero-title {
            font-size: 38px;
            font-weight: 800;
            color: var(--gray-900);
            line-height: 1.25;
            margin-bottom: var(--spacing-md);
            letter-spacing: -0.5px;
        }
        .hero-title .highlight {
            color: var(--primary);
            position: relative;
        }
        .hero-desc {
            font-size: 17px;
            color: var(--gray-600);
            line-height: 1.8;
            margin-bottom: var(--spacing-lg);
            max-width: 560px;
        }
        .hero-actions {
            display: flex;
            gap: var(--spacing-sm);
            flex-wrap: wrap;
            align-items: center;
        }
        .btn-hero-primary {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 14px 30px;
            border-radius: var(--radius-sm);
            font-size: 16px;
            font-weight: 700;
            background: var(--accent-orange);
            color: #fff;
            border: none;
            transition: all var(--transition-fast);
            cursor: pointer;
            text-decoration: none;
            letter-spacing: 0.5px;
            box-shadow: 0 4px 16px rgba(255, 111, 0, 0.3);
        }
        .btn-hero-primary:hover {
            background: var(--accent-orange-hover);
            transform: translateY(-2px);
            box-shadow: 0 8px 24px rgba(255, 111, 0, 0.4);
            color: #fff;
        }
        .btn-hero-secondary {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 14px 30px;
            border-radius: var(--radius-sm);
            font-size: 16px;
            font-weight: 600;
            background: transparent;
            color: var(--primary-dark);
            border: 2px solid var(--primary-soft);
            transition: all var(--transition-fast);
            cursor: pointer;
            text-decoration: none;
            letter-spacing: 0.5px;
        }
        .btn-hero-secondary:hover {
            background: var(--primary-bg);
            border-color: var(--primary);
            color: var(--primary-deep);
        }
        .hero-stats-mini {
            display: flex;
            gap: var(--spacing-lg);
            flex-wrap: wrap;
            margin-top: var(--spacing-lg);
            padding-top: var(--spacing-md);
            border-top: 1px solid var(--gray-200);
        }
        .hero-stat-item {
            text-align: center;
            min-width: 80px;
        }
        .hero-stat-num {
            font-size: 28px;
            font-weight: 800;
            color: var(--primary-dark);
            line-height: 1;
        }
        .hero-stat-label {
            font-size: 12px;
            color: var(--gray-500);
            margin-top: 4px;
        }
        .hero-visual {
            flex: 1;
            min-width: 280px;
            display: flex;
            justify-content: center;
            align-items: center;
        }
        .hero-card-cluster {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 16px;
            width: 100%;
            max-width: 480px;
        }
        .hero-mini-card {
            background: #fff;
            border-radius: var(--radius-md);
            padding: 20px;
            box-shadow: var(--card-shadow);
            text-align: center;
            transition: all var(--transition-fast);
        }
        .hero-mini-card:hover {
            box-shadow: var(--card-shadow-hover);
            transform: translateY(-2px);
        }
        .hero-mini-card .mini-num {
            font-size: 32px;
            font-weight: 800;
            color: var(--primary);
            line-height: 1;
        }
        .hero-mini-card .mini-label {
            font-size: 13px;
            color: var(--gray-500);
            margin-top: 6px;
        }
        .hero-mini-card .mini-trend {
            display: inline-block;
            font-size: 11px;
            color: #22C55E;
            font-weight: 600;
            margin-top: 4px;
        }
        @media (max-width: 768px) {
            .hero-section {
                min-height: auto;
            }
            .hero-title {
                font-size: 26px;
            }
            .hero-desc {
                font-size: 15px;
            }
            .hero-card-cluster {
                grid-template-columns: 1fr 1fr;
                gap: 10px;
            }
            .hero-mini-card {
                padding: 14px;
            }
            .hero-mini-card .mini-num {
                font-size: 24px;
            }
            .btn-hero-primary,
            .btn-hero-secondary {
                padding: 12px 20px;
                font-size: 14px;
            }
            .hero-stats-mini {
                gap: var(--spacing-sm);
            }
            .hero-stat-num {
                font-size: 22px;
            }
        }
        @media (max-width: 520px) {
            .hero-card-cluster {
                grid-template-columns: 1fr;
                gap: 8px;
            }
            .hero-title {
                font-size: 22px;
            }
        }

        /* ========== BRAND STORY ========== */
        .brand-story-section {
            background: var(--gray-100);
        }
        .brand-story-block {
            max-width: 800px;
            margin: 0 auto;
            text-align: center;
            padding: var(--spacing-lg) var(--spacing-md);
            background: #fff;
            border-radius: var(--radius-lg);
            box-shadow: var(--card-shadow);
            font-size: 17px;
            line-height: 2;
            color: var(--gray-700);
            letter-spacing: 0.3px;
        }
        .brand-story-block strong {
            color: var(--primary-dark);
            font-weight: 700;
        }

        /* ========== METRICS DASHBOARD ========== */
        .metrics-section {
            background: #fff;
        }
        .metrics-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: var(--spacing-md);
        }
        .metric-card {
            background: #fff;
            border-radius: var(--radius-md);
            padding: var(--spacing-md);
            box-shadow: var(--card-shadow);
            border: 1px solid var(--gray-150);
            transition: all var(--transition-fast);
            text-align: center;
            position: relative;
            overflow: hidden;
        }
        .metric-card:hover {
            box-shadow: var(--card-shadow-hover);
            transform: translateY(-2px);
            border-color: var(--primary-soft);
        }
        .metric-card .metric-icon {
            width: 44px;
            height: 44px;
            border-radius: 50%;
            background: var(--primary-bg);
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 12px;
            color: var(--primary);
            font-size: 18px;
        }
        .metric-card .metric-value {
            font-size: 40px;
            font-weight: 800;
            color: var(--gray-900);
            line-height: 1;
            margin-bottom: 4px;
        }
        .metric-card .metric-label {
            font-size: 14px;
            color: var(--gray-500);
            font-weight: 500;
        }
        .metric-card .metric-trend-bar {
            height: 4px;
            border-radius: 2px;
            margin-top: 10px;
            background: var(--gray-200);
            overflow: hidden;
        }
        .metric-card .metric-trend-fill {
            height: 100%;
            border-radius: 2px;
            background: var(--primary);
            transition: width 1.2s ease;
        }
        @media (max-width: 992px) {
            .metrics-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }
        @media (max-width: 520px) {
            .metrics-grid {
                grid-template-columns: 1fr;
            }
            .metric-card .metric-value {
                font-size: 32px;
            }
        }

        /* ========== SERVICE MATRIX ========== */
        .service-matrix-section {
            background: var(--gray-50);
        }
        .service-matrix {
            display: grid;
            grid-template-columns: 1.5fr 1fr;
            gap: var(--spacing-md);
        }
        .service-matrix .service-feature-large {
            background: #fff;
            border-radius: var(--radius-lg);
            padding: var(--spacing-lg);
            box-shadow: var(--card-shadow);
            display: flex;
            gap: var(--spacing-md);
            align-items: center;
            transition: all var(--transition-fast);
            border: 1px solid transparent;
        }
        .service-matrix .service-feature-large:hover {
            box-shadow: var(--card-shadow-hover);
            border-color: var(--primary-soft);
        }
        .service-feature-large .sf-img {
            width: 180px;
            height: 140px;
            border-radius: var(--radius-md);
            object-fit: cover;
            flex-shrink: 0;
        }
        .service-feature-large .sf-info h3 {
            font-size: 20px;
            font-weight: 700;
            color: var(--gray-900);
            margin-bottom: 8px;
        }
        .service-feature-large .sf-info p {
            font-size: 15px;
            color: var(--gray-600);
            line-height: 1.7;
            margin-bottom: 10px;
        }
        .service-feature-large .sf-link {
            font-weight: 600;
            color: var(--primary);
            font-size: 14px;
        }
        .service-matrix-right {
            display: grid;
            grid-template-rows: 1fr 1fr;
            gap: var(--spacing-md);
        }
        .service-feature-compact {
            background: #fff;
            border-radius: var(--radius-md);
            padding: var(--spacing-md);
            box-shadow: var(--card-shadow);
            display: flex;
            gap: var(--spacing-sm);
            align-items: center;
            transition: all var(--transition-fast);
            border: 1px solid transparent;
        }
        .service-feature-compact:hover {
            box-shadow: var(--card-shadow-hover);
            border-color: var(--primary-soft);
        }
        .service-feature-compact .sfc-img {
            width: 90px;
            height: 70px;
            border-radius: var(--radius-sm);
            object-fit: cover;
            flex-shrink: 0;
        }
        .service-feature-compact .sfc-info h4 {
            font-size: 16px;
            font-weight: 700;
            color: var(--gray-900);
            margin-bottom: 4px;
        }
        .service-feature-compact .sfc-info p {
            font-size: 13px;
            color: var(--gray-500);
            line-height: 1.6;
            margin: 0;
        }
        @media (max-width: 768px) {
            .service-matrix {
                grid-template-columns: 1fr;
            }
            .service-feature-large {
                flex-direction: column;
                text-align: center;
            }
            .service-feature-large .sf-img {
                width: 100%;
                height: 180px;
            }
            .service-feature-compact {
                flex-direction: column;
                text-align: center;
            }
            .service-feature-compact .sfc-img {
                width: 100%;
                height: 120px;
            }
        }

        /* ========== FEATURED CARDS ========== */
        .featured-section {
            background: #fff;
        }
        .featured-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: var(--spacing-md);
        }
        .featured-card {
            background: #fff;
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--card-shadow);
            transition: all var(--transition-fast);
            border: 1px solid var(--gray-150);
            display: flex;
            flex-direction: column;
        }
        .featured-card:hover {
            box-shadow: var(--card-shadow-hover);
            transform: translateY(-3px);
            border-color: var(--primary-soft);
        }
        .featured-card .fc-img {
            width: 100%;
            height: 200px;
            object-fit: cover;
        }
        .featured-card .fc-body {
            padding: var(--spacing-md);
            flex: 1;
            display: flex;
            flex-direction: column;
        }
        .featured-card .fc-body h3 {
            font-size: 18px;
            font-weight: 700;
            color: var(--gray-900);
            margin-bottom: 8px;
        }
        .featured-card .fc-body p {
            font-size: 14px;
            color: var(--gray-600);
            line-height: 1.7;
            flex: 1;
            margin-bottom: 12px;
        }
        .featured-card .fc-link {
            font-weight: 600;
            color: var(--primary);
            font-size: 14px;
            align-self: flex-start;
        }
        @media (max-width: 992px) {
            .featured-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }
        @media (max-width: 520px) {
            .featured-grid {
                grid-template-columns: 1fr;
            }
            .featured-card .fc-img {
                height: 160px;
            }
        }

        /* ========== COMPARISON ========== */
        .comparison-section {
            background: var(--gray-100);
        }
        .comparison-table-wrap {
            overflow-x: auto;
            -webkit-overflow-scrolling: touch;
            border-radius: var(--radius-lg);
            box-shadow: var(--card-shadow-lg);
            background: #fff;
        }
        .comparison-table {
            width: 100%;
            border-collapse: collapse;
            min-width: 600px;
            font-size: 15px;
        }
        .comparison-table thead th {
            background: var(--primary);
            color: #fff;
            padding: 16px 20px;
            font-weight: 700;
            text-align: center;
            font-size: 15px;
            letter-spacing: 0.5px;
            white-space: nowrap;
        }
        .comparison-table thead th:first-child {
            border-radius: var(--radius-lg) 0 0 0;
            text-align: left;
        }
        .comparison-table thead th:last-child {
            border-radius: 0 var(--radius-lg) 0 0;
        }
        .comparison-table tbody td {
            padding: 14px 20px;
            text-align: center;
            border-bottom: 1px solid var(--gray-150);
            color: var(--gray-700);
        }
        .comparison-table tbody td:first-child {
            text-align: left;
            font-weight: 600;
            color: var(--gray-800);
        }
        .comparison-table tbody tr:nth-child(even) td {
            background: var(--gray-50);
        }
        .comparison-table tbody tr:hover td {
            background: var(--primary-bg);
        }
        .comparison-table .highlight-cell {
            background: #E8F4FD !important;
            font-weight: 700;
            color: var(--primary-dark);
        }
        .comparison-table .check-icon {
            color: #22C55E;
            font-weight: 700;
        }
        .comparison-table .cross-icon {
            color: #EF4444;
        }

        /* ========== TESTIMONIALS ========== */
        .testimonials-section {
            background: #fff;
        }
        .testimonials-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: var(--spacing-md);
        }
        .testimonial-card {
            background: #fff;
            border-radius: var(--radius-lg);
            padding: var(--spacing-lg);
            box-shadow: var(--card-shadow);
            border: 1px solid var(--gray-150);
            position: relative;
            transition: all var(--transition-fast);
        }
        .testimonial-card:hover {
            box-shadow: var(--card-shadow-hover);
            transform: translateY(-2px);
        }
        .testimonial-card .t-quote {
            font-size: 40px;
            color: var(--primary-soft);
            line-height: 1;
            margin-bottom: 8px;
        }
        .testimonial-card .t-text {
            font-size: 15px;
            color: var(--gray-700);
            line-height: 1.8;
            margin-bottom: 16px;
        }
        .testimonial-card .t-author {
            font-weight: 700;
            color: var(--gray-900);
            font-size: 14px;
        }
        .testimonial-card .t-role {
            font-size: 12px;
            color: var(--gray-500);
        }
        @media (max-width: 992px) {
            .testimonials-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }
        @media (max-width: 520px) {
            .testimonials-grid {
                grid-template-columns: 1fr;
            }
        }

        /* ========== TIMELINE ========== */
        .timeline-section {
            background: var(--gray-50);
        }
        .timeline {
            position: relative;
            max-width: 700px;
            margin: 0 auto;
            padding-left: 40px;
        }
        .timeline::before {
            content: '';
            position: absolute;
            left: 18px;
            top: 0;
            bottom: 0;
            width: 3px;
            background: var(--primary-soft);
            border-radius: 2px;
        }
        .timeline-item {
            position: relative;
            margin-bottom: var(--spacing-lg);
            padding-left: 30px;
        }
        .timeline-item::before {
            content: '';
            position: absolute;
            left: -26px;
            top: 5px;
            width: 16px;
            height: 16px;
            background: var(--primary);
            border-radius: 50%;
            border: 3px solid #fff;
            box-shadow: 0 0 0 3px var(--primary-soft);
            z-index: 2;
        }
        .timeline-item .tl-date {
            font-size: 13px;
            font-weight: 700;
            color: var(--primary);
            letter-spacing: 1px;
            margin-bottom: 4px;
        }
        .timeline-item .tl-title {
            font-size: 18px;
            font-weight: 700;
            color: var(--gray-900);
            margin-bottom: 6px;
        }
        .timeline-item .tl-desc {
            font-size: 14px;
            color: var(--gray-600);
            line-height: 1.7;
        }
        @media (max-width: 520px) {
            .timeline {
                padding-left: 28px;
            }
            .timeline-item {
                padding-left: 20px;
            }
            .timeline-item::before {
                left: -22px;
                width: 12px;
                height: 12px;
            }
        }

        /* ========== GUIDE ========== */
        .guide-section {
            background: #fff;
        }
        .guide-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: var(--spacing-md);
        }
        .guide-card {
            text-align: center;
            padding: var(--spacing-lg) var(--spacing-md);
            background: #fff;
            border-radius: var(--radius-lg);
            box-shadow: var(--card-shadow);
            border: 1px solid var(--gray-150);
            transition: all var(--transition-fast);
            position: relative;
        }
        .guide-card:hover {
            box-shadow: var(--card-shadow-hover);
            transform: translateY(-3px);
            border-color: var(--primary-soft);
        }
        .guide-card .guide-num {
            width: 48px;
            height: 48px;
            border-radius: 50%;
            background: var(--primary);
            color: #fff;
            font-size: 20px;
            font-weight: 800;
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 14px;
        }
        .guide-card h4 {
            font-size: 17px;
            font-weight: 700;
            color: var(--gray-900);
            margin-bottom: 8px;
        }
        .guide-card p {
            font-size: 14px;
            color: var(--gray-600);
            line-height: 1.7;
            margin: 0;
        }
        @media (max-width: 992px) {
            .guide-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }
        @media (max-width: 520px) {
            .guide-grid {
                grid-template-columns: 1fr;
            }
        }

        /* ========== TIER COMPARISON ========== */
        .tier-section {
            background: var(--gray-100);
        }
        .tier-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: var(--spacing-md);
            align-items: stretch;
        }
        .tier-card {
            background: #fff;
            border-radius: var(--radius-lg);
            padding: var(--spacing-lg);
            box-shadow: var(--card-shadow);
            border: 2px solid var(--gray-200);
            text-align: center;
            transition: all var(--transition-fast);
            display: flex;
            flex-direction: column;
            position: relative;
        }
        .tier-card.featured {
            border-color: var(--primary);
            box-shadow: var(--card-shadow-lg);
            transform: scale(1.03);
            z-index: 2;
            background: #fff;
        }
        .tier-card.featured .tier-badge {
            position: absolute;
            top: -14px;
            left: 50%;
            transform: translateX(-50%);
            background: var(--accent-orange);
            color: #fff;
            padding: 5px 16px;
            border-radius: var(--radius-chip);
            font-size: 12px;
            font-weight: 700;
            letter-spacing: 0.5px;
            white-space: nowrap;
        }
        .tier-card .tier-name {
            font-size: 20px;
            font-weight: 700;
            color: var(--gray-900);
            margin-bottom: 8px;
        }
        .tier-card .tier-price {
            font-size: 36px;
            font-weight: 800;
            color: var(--primary-dark);
            margin-bottom: 4px;
        }
        .tier-card .tier-price small {
            font-size: 14px;
            font-weight: 500;
            color: var(--gray-500);
        }
        .tier-card .tier-desc {
            font-size: 14px;
            color: var(--gray-600);
            line-height: 1.7;
            margin-bottom: 16px;
            flex: 1;
        }
        .tier-card .tier-features {
            list-style: none;
            padding: 0;
            text-align: left;
            margin-bottom: 20px;
            flex: 1;
        }
        .tier-card .tier-features li {
            padding: 6px 0;
            font-size: 14px;
            color: var(--gray-700);
            border-bottom: 1px solid var(--gray-150);
        }
        .tier-card .tier-features li::before {
            content: '✓ ';
            color: #22C55E;
            font-weight: 700;
        }
        .tier-card .btn-tier {
            display: block;
            width: 100%;
            padding: 12px;
            border-radius: var(--radius-sm);
            font-weight: 700;
            font-size: 15px;
            text-align: center;
            transition: all var(--transition-fast);
            cursor: pointer;
            text-decoration: none;
        }
        .btn-tier-primary {
            background: var(--accent-orange);
            color: #fff;
            border: none;
        }
        .btn-tier-primary:hover {
            background: var(--accent-orange-hover);
            color: #fff;
        }
        .btn-tier-outline {
            background: transparent;
            color: var(--primary-dark);
            border: 2px solid var(--primary-soft);
        }
        .btn-tier-outline:hover {
            background: var(--primary-bg);
            border-color: var(--primary);
        }
        @media (max-width: 992px) {
            .tier-grid {
                grid-template-columns: 1fr;
                max-width: 440px;
                margin: 0 auto;
            }
            .tier-card.featured {
                transform: none;
            }
        }

        /* ========== PROGRESS ========== */
        .progress-section {
            background: #fff;
        }
        .progress-steps {
            max-width: 650px;
            margin: 0 auto;
        }
        .progress-step {
            display: flex;
            gap: var(--spacing-md);
            align-items: flex-start;
            margin-bottom: var(--spacing-lg);
            position: relative;
        }
        .progress-step:not(:last-child)::after {
            content: '';
            position: absolute;
            left: 22px;
            top: 48px;
            bottom: -28px;
            width: 2px;
            background: var(--primary-soft);
            border-radius: 1px;
        }
        .progress-step .ps-icon {
            width: 44px;
            height: 44px;
            border-radius: 50%;
            background: var(--primary-bg);
            display: flex;
            align-items: center;
            justify-content: center;
            flex-shrink: 0;
            color: var(--primary);
            font-size: 16px;
            font-weight: 700;
            z-index: 2;
            position: relative;
        }
        .progress-step.completed .ps-icon {
            background: #22C55E;
            color: #fff;
        }
        .progress-step .ps-info h4 {
            font-size: 17px;
            font-weight: 700;
            color: var(--gray-900);
            margin-bottom: 4px;
        }
        .progress-step .ps-info p {
            font-size: 14px;
            color: var(--gray-600);
            line-height: 1.7;
            margin: 0;
        }
        .progress-bar-wrap {
            margin-top: var(--spacing-lg);
            background: var(--gray-200);
            border-radius: 10px;
            height: 10px;
            overflow: hidden;
        }
        .progress-bar-fill {
            height: 100%;
            background: linear-gradient(90deg, var(--primary), #22C55E);
            border-radius: 10px;
            transition: width 1.5s ease;
            width: 68%;
        }

        /* ========== FAQ ========== */
        .faq-section {
            background: var(--gray-50);
        }
        .accordion-custom .accordion-item {
            border: 1px solid var(--gray-200);
            border-radius: var(--radius-md) !important;
            margin-bottom: 10px;
            overflow: hidden;
            background: #fff;
            box-shadow: var(--card-shadow);
            transition: all var(--transition-fast);
        }
        .accordion-custom .accordion-item:hover {
            box-shadow: var(--card-shadow-hover);
        }
        .accordion-custom .accordion-button {
            font-weight: 700;
            font-size: 16px;
            color: var(--gray-900);
            background: #fff;
            padding: 18px 22px;
            border: none;
            box-shadow: none;
            transition: all var(--transition-fast);
            border-radius: var(--radius-md) !important;
        }
        .accordion-custom .accordion-button:not(.collapsed) {
            background: var(--primary-bg);
            color: var(--primary-dark);
            box-shadow: none;
            border-bottom: 1px solid var(--primary-soft);
        }
        .accordion-custom .accordion-button:focus {
            box-shadow: none;
            border-color: var(--primary);
        }
        .accordion-custom .accordion-button::after {
            background-image: none;
            content: '+';
            font-size: 22px;
            font-weight: 300;
            color: var(--primary);
            width: auto;
            height: auto;
            line-height: 1;
            transition: transform var(--transition-fast);
        }
        .accordion-custom .accordion-button:not(.collapsed)::after {
            transform: rotate(45deg);
            content: '−';
            color: var(--primary-dark);
        }
        .accordion-custom .accordion-body {
            padding: 18px 22px;
            font-size: 15px;
            color: var(--gray-700);
            line-height: 1.8;
            background: #fff;
        }

        /* ========== NEWS ========== */
        .news-section {
            background: #fff;
        }
        .news-list {
            list-style: none;
            padding: 0;
            display: flex;
            flex-direction: column;
            gap: var(--spacing-sm);
        }
        .news-item {
            display: flex;
            gap: var(--spacing-md);
            padding: var(--spacing-md);
            background: #fff;
            border-radius: var(--radius-md);
            box-shadow: var(--card-shadow);
            border: 1px solid var(--gray-150);
            transition: all var(--transition-fast);
            cursor: pointer;
            align-items: flex-start;
            text-decoration: none;
            color: inherit;
        }
        .news-item:hover {
            box-shadow: var(--card-shadow-hover);
            border-color: var(--primary-soft);
            transform: translateY(-1px);
        }
        .news-item .news-date {
            flex-shrink: 0;
            width: 70px;
            text-align: center;
            font-size: 13px;
            color: var(--gray-500);
            font-weight: 600;
            padding-top: 2px;
        }
        .news-item .news-date .day {
            display: block;
            font-size: 26px;
            font-weight: 800;
            color: var(--primary);
            line-height: 1;
        }
        .news-item .news-content h4 {
            font-size: 17px;
            font-weight: 700;
            color: var(--gray-900);
            margin-bottom: 6px;
            line-height: 1.4;
        }
        .news-item .news-content p {
            font-size: 14px;
            color: var(--gray-600);
            line-height: 1.7;
            margin-bottom: 8px;
        }
        .news-item .news-link {
            font-weight: 600;
            color: var(--primary);
            font-size: 13px;
        }
        @media (max-width: 520px) {
            .news-item {
                flex-direction: column;
                gap: 8px;
            }
            .news-item .news-date {
                width: auto;
                text-align: left;
                display: flex;
                gap: 6px;
                align-items: baseline;
            }
            .news-item .news-date .day {
                font-size: 20px;
            }
        }

        /* ========== CTA FORM ========== */
        .cta-form-section {
            background: linear-gradient(160deg, #EBF3FA 0%, #E3EEF8 100%);
        }
        .cta-form-card {
            background: #fff;
            border-radius: var(--radius-lg);
            padding: var(--spacing-xl);
            box-shadow: var(--card-shadow-lg);
            display: flex;
            gap: var(--spacing-xl);
            align-items: center;
            flex-wrap: wrap;
        }
        .cta-form-info {
            flex: 1;
            min-width: 250px;
        }
        .cta-form-info h3 {
            font-size: 24px;
            font-weight: 700;
            color: var(--gray-900);
            margin-bottom: 8px;
        }
        .cta-form-info p {
            font-size: 15px;
            color: var(--gray-600);
            line-height: 1.7;
        }
        .cta-form-fields {
            flex: 1;
            min-width: 280px;
            display: flex;
            flex-wrap: wrap;
            gap: 12px;
            align-items: flex-end;
        }
        .cta-form-fields input {
            flex: 1;
            min-width: 140px;
            padding: 12px 16px;
            border: 2px solid var(--gray-300);
            border-radius: var(--radius-sm);
            font-size: 15px;
            transition: all var(--transition-fast);
            background: var(--gray-50);
        }
        .cta-form-fields input:focus {
            outline: none;
            border-color: var(--primary);
            background: #fff;
            box-shadow: 0 0 0 4px rgba(13, 110, 253, 0.08);
        }
        .btn-cta-submit {
            padding: 13px 28px;
            border-radius: var(--radius-sm);
            font-size: 15px;
            font-weight: 700;
            background: var(--accent-orange);
            color: #fff;
            border: none;
            cursor: pointer;
            transition: all var(--transition-fast);
            white-space: nowrap;
            letter-spacing: 0.5px;
            flex-shrink: 0;
        }
        .btn-cta-submit:hover {
            background: var(--accent-orange-hover);
            transform: translateY(-1px);
            box-shadow: 0 6px 18px rgba(255, 111, 0, 0.35);
        }
        @media (max-width: 768px) {
            .cta-form-card {
                flex-direction: column;
                text-align: center;
                padding: var(--spacing-lg);
            }
            .cta-form-fields {
                flex-direction: column;
                width: 100%;
            }
            .cta-form-fields input {
                width: 100%;
            }
            .btn-cta-submit {
                width: 100%;
            }
        }

        /* ========== SUBSCRIBE ========== */
        .subscribe-section {
            background: #fff;
            text-align: center;
        }
        .subscribe-box {
            max-width: 550px;
            margin: 0 auto;
            padding: var(--spacing-xl);
            background: var(--gray-50);
            border-radius: var(--radius-lg);
            box-shadow: var(--card-shadow);
        }
        .subscribe-box h3 {
            font-size: 22px;
            font-weight: 700;
            color: var(--gray-900);
            margin-bottom: 8px;
        }
        .subscribe-box p {
            font-size: 15px;
            color: var(--gray-600);
            margin-bottom: 20px;
        }
        .subscribe-input-group {
            display: flex;
            gap: 8px;
            max-width: 420px;
            margin: 0 auto;
        }
        .subscribe-input-group input {
            flex: 1;
            padding: 12px 16px;
            border: 2px solid var(--gray-300);
            border-radius: var(--radius-sm);
            font-size: 15px;
            transition: all var(--transition-fast);
            background: #fff;
        }
        .subscribe-input-group input:focus {
            outline: none;
            border-color: var(--primary);
            box-shadow: 0 0 0 4px rgba(13, 110, 253, 0.06);
        }
        .subscribe-input-group button {
            padding: 12px 24px;
            border-radius: var(--radius-sm);
            font-weight: 700;
            background: var(--primary);
            color: #fff;
            border: none;
            cursor: pointer;
            transition: all var(--transition-fast);
            white-space: nowrap;
        }
        .subscribe-input-group button:hover {
            background: var(--primary-dark);
            transform: translateY(-1px);
        }
        @media (max-width: 520px) {
            .subscribe-input-group {
                flex-direction: column;
            }
            .subscribe-input-group button {
                width: 100%;
            }
        }

        /* ========== FOOTER ========== */
        .site-footer {
            background: var(--footer-bg);
            color: var(--footer-text);
            padding: var(--spacing-2xl) 0 0;
            font-size: 14px;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 1.5fr 1fr 1fr 1fr;
            gap: var(--spacing-lg);
            padding-bottom: var(--spacing-xl);
            border-bottom: 1px solid rgba(255, 255, 255, 0.1);
        }
        .footer-col h4 {
            color: #fff;
            font-size: 16px;
            font-weight: 700;
            margin-bottom: 16px;
            letter-spacing: 0.5px;
        }
        .footer-col p {
            line-height: 1.7;
            margin-bottom: 8px;
        }
        .footer-col ul {
            list-style: none;
            padding: 0;
        }
        .footer-col ul li {
            margin-bottom: 8px;
        }
        .footer-col ul li a {
            color: var(--footer-text);
            transition: color var(--transition-fast);
            font-size: 14px;
        }
        .footer-col ul li a:hover {
            color: #fff;
        }
        .footer-bottom {
            padding: var(--spacing-md) 0;
            text-align: center;
            font-size: 13px;
            color: rgba(255, 255, 255, 0.5);
            display: flex;
            flex-wrap: wrap;
            justify-content: center;
            gap: 12px;
            align-items: center;
        }
        .footer-bottom a {
            color: rgba(255, 255, 255, 0.6);
            font-size: 13px;
        }
        .footer-bottom a:hover {
            color: #fff;
        }
        .footer-bottom .divider {
            color: rgba(255, 255, 255, 0.25);
        }
        @media (max-width: 768px) {
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: var(--spacing-md);
            }
        }
        @media (max-width: 520px) {
            .footer-grid {
                grid-template-columns: 1fr;
            }
            .footer-bottom {
                flex-direction: column;
                gap: 6px;
            }
        }

        /* ========== UTILITY ========== */
        .text-primary-dark {
            color: var(--primary-dark) !important;
        }
        .bg-primary-soft {
            background: var(--primary-bg) !important;
        }
        .fw-800 {
            font-weight: 800 !important;
        }
        .gap-md {
            gap: var(--spacing-md);
        }
        .mt-lg {
            margin-top: var(--spacing-lg);
        }
        .mb-lg {
            margin-bottom: var(--spacing-lg);
        }
        .text-accent {
            color: var(--accent-orange) !important;
        }

/* roulang page: category2 */
:root {
            --primary: #0D6EFD;
            --primary-light: #3B8BFF;
            --primary-bg: #EBF3FA;
            --primary-soft: #D6E8FB;
            --primary-dark: #1565C0;
            --primary-deep: #0A4A9E;
            --accent-orange: #FF6F00;
            --accent-orange-hover: #E56500;
            --accent-orange-light: #FFF3E6;
            --gray-50: #F8F9FA;
            --gray-100: #F5F7FA;
            --gray-150: #EEF1F5;
            --gray-200: #E9ECEF;
            --gray-300: #DEE2E6;
            --gray-400: #ADB5BD;
            --gray-500: #6C757D;
            --gray-600: #495057;
            --gray-700: #343A40;
            --gray-800: #212529;
            --gray-900: #1A1D21;
            --footer-bg: #1E293B;
            --footer-text: #B0B8C4;
            --white: #FFFFFF;
            --card-shadow: 0 4px 12px rgba(0, 0, 0, 0.04);
            --card-shadow-hover: 0 8px 24px rgba(0, 0, 0, 0.08);
            --card-shadow-lg: 0 12px 32px rgba(0, 0, 0, 0.06);
            --radius-sm: 8px;
            --radius-md: 12px;
            --radius-lg: 16px;
            --radius-xl: 20px;
            --radius-chip: 20px;
            --spacing-xs: 8px;
            --spacing-sm: 16px;
            --spacing-md: 24px;
            --spacing-lg: 40px;
            --spacing-xl: 60px;
            --spacing-2xl: 80px;
            --spacing-3xl: 100px;
            --transition-fast: 0.2s ease;
            --transition-normal: 0.3s ease;
            --nav-height: 72px;
            --container-max: 1320px;
        }

        *,
        *::before,
        *::after {
            box-sizing: border-box;
        }

        html {
            scroll-behavior: smooth;
            scroll-padding-top: var(--nav-height);
        }

        body {
            font-family: 'PingFang SC', 'Microsoft YaHei', 'Helvetica Neue', Arial, sans-serif;
            font-size: 16px;
            line-height: 1.8;
            color: var(--gray-800);
            background-color: var(--white);
            background-image: linear-gradient(180deg, #F8FAFD 0%, #FFFFFF 100%);
            background-attachment: fixed;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            overflow-x: hidden;
            padding-top: var(--nav-height);
            margin: 0;
        }

        a {
            color: var(--primary-dark);
            text-decoration: none;
            transition: color var(--transition-fast);
        }
        a:hover {
            color: var(--primary-deep);
            text-decoration: none;
        }
        a:focus-visible {
            outline: 2px solid var(--primary);
            outline-offset: 3px;
            border-radius: 4px;
        }

        img {
            max-width: 100%;
            height: auto;
            display: block;
        }

        button,
        input,
        select,
        textarea {
            font-family: inherit;
            font-size: inherit;
        }

        .container-custom {
            max-width: var(--container-max);
            margin: 0 auto;
            padding: 0 var(--spacing-md);
        }

        @media (max-width: 768px) {
            .container-custom {
                padding: 0 var(--spacing-sm);
            }
        }

        /* ========== NAVIGATION ========== */
        .site-nav {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1050;
            height: var(--nav-height);
            background: var(--white);
            border-bottom: 1px solid var(--gray-200);
            display: flex;
            align-items: center;
            transition: box-shadow var(--transition-normal);
        }
        .site-nav.scrolled {
            box-shadow: 0 2px 16px rgba(0, 0, 0, 0.06);
        }
        .nav-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            width: 100%;
            max-width: var(--container-max);
            margin: 0 auto;
            padding: 0 var(--spacing-md);
            height: 100%;
        }
        .nav-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 22px;
            font-weight: 700;
            color: var(--primary-dark);
            white-space: nowrap;
            flex-shrink: 0;
        }
        .nav-logo .logo-icon {
            width: 40px;
            height: 40px;
            background: var(--primary);
            border-radius: var(--radius-sm);
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-size: 18px;
            font-weight: 700;
            flex-shrink: 0;
        }
        .nav-logo:hover {
            color: var(--primary-deep);
        }
        .nav-chips {
            display: flex;
            align-items: center;
            gap: 6px;
            flex-wrap: nowrap;
            overflow-x: auto;
            scrollbar-width: none;
            -ms-overflow-style: none;
            padding: 0 4px;
        }
        .nav-chips::-webkit-scrollbar {
            display: none;
        }
        .nav-chip {
            display: inline-flex;
            align-items: center;
            padding: 8px 16px;
            border-radius: var(--radius-chip);
            font-size: 14px;
            font-weight: 500;
            color: var(--primary-dark);
            background: transparent;
            border: 1px solid var(--primary-soft);
            white-space: nowrap;
            transition: all var(--transition-fast);
            cursor: pointer;
            text-decoration: none;
            flex-shrink: 0;
        }
        .nav-chip:hover {
            background: var(--primary-bg);
            border-color: var(--primary);
            color: var(--primary-dark);
        }
        .nav-chip.active {
            background: var(--primary);
            border-color: var(--primary);
            color: #fff;
            font-weight: 600;
        }
        .nav-cta {
            flex-shrink: 0;
            margin-left: 12px;
            padding: 10px 20px;
            background: var(--accent-orange);
            color: #fff;
            border-radius: var(--radius-sm);
            font-size: 14px;
            font-weight: 600;
            border: none;
            cursor: pointer;
            white-space: nowrap;
            transition: all var(--transition-fast);
            text-decoration: none;
            display: inline-flex;
            align-items: center;
        }
        .nav-cta:hover {
            background: var(--accent-orange-hover);
            color: #fff;
            transform: translateY(-1px);
            box-shadow: 0 4px 12px rgba(255, 111, 0, 0.25);
        }
        .nav-toggle {
            display: none;
            background: none;
            border: none;
            font-size: 24px;
            color: var(--gray-700);
            cursor: pointer;
            padding: 8px;
            flex-shrink: 0;
        }
        @media (max-width: 992px) {
            .nav-chips {
                display: none;
                position: absolute;
                top: var(--nav-height);
                left: 0;
                right: 0;
                background: var(--white);
                flex-direction: column;
                padding: var(--spacing-sm);
                border-bottom: 1px solid var(--gray-200);
                box-shadow: 0 8px 24px rgba(0, 0, 0, 0.08);
                gap: 4px;
                z-index: 1049;
            }
            .nav-chips.open {
                display: flex;
            }
            .nav-chip {
                width: 100%;
                justify-content: center;
                padding: 12px 16px;
                border-radius: var(--radius-sm);
                font-size: 15px;
            }
            .nav-toggle {
                display: block;
            }
            .nav-cta {
                margin-left: auto;
                margin-right: 8px;
                padding: 8px 16px;
                font-size: 13px;
            }
        }
        @media (max-width: 520px) {
            .nav-logo {
                font-size: 18px;
                gap: 6px;
            }
            .nav-logo .logo-icon {
                width: 34px;
                height: 34px;
                font-size: 15px;
            }
            .nav-cta {
                padding: 7px 12px;
                font-size: 12px;
            }
        }

        /* ========== BREADCRUMB ========== */
        .breadcrumb-section {
            background: var(--gray-100);
            padding: 16px 0;
            border-bottom: 1px solid var(--gray-200);
        }
        .breadcrumb-nav {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 14px;
            color: var(--gray-500);
            flex-wrap: wrap;
        }
        .breadcrumb-nav a {
            color: var(--gray-600);
            transition: color var(--transition-fast);
        }
        .breadcrumb-nav a:hover {
            color: var(--primary);
        }
        .breadcrumb-nav .separator {
            color: var(--gray-400);
            font-size: 12px;
        }
        .breadcrumb-nav .current {
            color: var(--primary-dark);
            font-weight: 600;
        }

        /* ========== SECTION SPACING ========== */
        .section-padding {
            padding: var(--spacing-2xl) 0;
        }
        .section-padding-lg {
            padding: var(--spacing-3xl) 0;
        }
        @media (max-width: 768px) {
            .section-padding {
                padding: var(--spacing-xl) 0;
            }
            .section-padding-lg {
                padding: var(--spacing-2xl) 0;
            }
        }

        /* ========== HERO COMPARISON ========== */
        .hero-comparison {
            background: var(--white);
            position: relative;
            overflow: hidden;
        }
        .hero-comparison .hero-bg-overlay {
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            background-image: url('/assets/images/backpic/back-1.webp');
            background-size: cover;
            background-position: center;
            opacity: 0.06;
            z-index: 0;
            pointer-events: none;
        }
        .hero-comparison .container-custom {
            position: relative;
            z-index: 1;
        }
        .hero-header {
            text-align: center;
            margin-bottom: var(--spacing-xl);
        }
        .hero-header h1 {
            font-size: 30px;
            font-weight: 700;
            color: var(--gray-900);
            margin-bottom: var(--spacing-sm);
            line-height: 1.3;
        }
        .hero-header .hero-subtitle {
            font-size: 17px;
            color: var(--gray-600);
            max-width: 700px;
            margin: 0 auto;
            line-height: 1.7;
        }
        .comparison-cards {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: var(--spacing-md);
            align-items: stretch;
            max-width: 1100px;
            margin: 0 auto;
        }
        .comparison-card {
            background: var(--white);
            border: 2px solid var(--gray-200);
            border-radius: var(--radius-lg);
            padding: var(--spacing-lg) var(--spacing-md);
            display: flex;
            flex-direction: column;
            transition: all var(--transition-normal);
            position: relative;
            box-shadow: var(--card-shadow);
        }
        .comparison-card:hover {
            box-shadow: var(--card-shadow-hover);
            transform: translateY(-2px);
        }
        .comparison-card.featured {
            border-color: var(--primary);
            background: linear-gradient(180deg, #F0F6FF 0%, #FFFFFF 40%);
            box-shadow: var(--card-shadow-lg);
            transform: scale(1.04);
            z-index: 2;
            border-width: 2.5px;
        }
        .comparison-card.featured:hover {
            transform: scale(1.05);
            box-shadow: 0 16px 40px rgba(13, 110, 253, 0.12);
        }
        .comparison-card .card-badge {
            position: absolute;
            top: -14px;
            left: 50%;
            transform: translateX(-50%);
            background: var(--accent-orange);
            color: #fff;
            padding: 6px 18px;
            border-radius: var(--radius-chip);
            font-size: 13px;
            font-weight: 700;
            white-space: nowrap;
            letter-spacing: 0.5px;
        }
        .comparison-card .card-tier {
            font-size: 13px;
            text-transform: uppercase;
            letter-spacing: 1px;
            color: var(--gray-500);
            font-weight: 600;
            margin-bottom: var(--spacing-xs);
            text-align: center;
        }
        .comparison-card .card-price {
            text-align: center;
            margin-bottom: var(--spacing-sm);
        }
        .comparison-card .card-price .price-num {
            font-size: 40px;
            font-weight: 700;
            color: var(--gray-900);
        }
        .comparison-card .card-price .price-unit {
            font-size: 14px;
            color: var(--gray-500);
        }
        .comparison-card.featured .card-price .price-num {
            color: var(--primary-dark);
        }
        .comparison-card .card-features {
            list-style: none;
            padding: 0;
            margin: 0 0 var(--spacing-lg) 0;
            flex: 1;
        }
        .comparison-card .card-features li {
            padding: 7px 0;
            font-size: 14px;
            color: var(--gray-700);
            border-bottom: 1px solid var(--gray-150);
            display: flex;
            align-items: flex-start;
            gap: 8px;
            line-height: 1.5;
        }
        .comparison-card .card-features li i {
            color: var(--primary);
            font-size: 13px;
            margin-top: 3px;
            flex-shrink: 0;
        }
        .comparison-card .card-features li i.fa-times {
            color: var(--gray-400);
        }
        .comparison-card .btn-card-cta {
            display: block;
            width: 100%;
            padding: 12px;
            text-align: center;
            border-radius: var(--radius-sm);
            font-weight: 600;
            font-size: 15px;
            transition: all var(--transition-fast);
            cursor: pointer;
            border: 2px solid var(--primary);
            background: transparent;
            color: var(--primary-dark);
        }
        .comparison-card .btn-card-cta:hover {
            background: var(--primary-bg);
        }
        .comparison-card.featured .btn-card-cta {
            background: var(--accent-orange);
            color: #fff;
            border-color: var(--accent-orange);
            font-size: 16px;
            padding: 14px;
        }
        .comparison-card.featured .btn-card-cta:hover {
            background: var(--accent-orange-hover);
            border-color: var(--accent-orange-hover);
            box-shadow: 0 6px 18px rgba(255, 111, 0, 0.3);
            transform: translateY(-2px);
        }
        @media (max-width: 992px) {
            .comparison-cards {
                grid-template-columns: 1fr;
                max-width: 500px;
                gap: var(--spacing-lg);
            }
            .comparison-card.featured {
                transform: scale(1);
                order: -1;
            }
            .comparison-card.featured:hover {
                transform: scale(1.01);
            }
        }

        /* ========== SECTION TITLES ========== */
        .section-title {
            font-size: 24px;
            font-weight: 700;
            color: var(--gray-900);
            margin-bottom: var(--spacing-xs);
            line-height: 1.3;
        }
        .section-subtitle {
            font-size: 16px;
            color: var(--gray-600);
            margin-bottom: var(--spacing-lg);
            line-height: 1.7;
        }
        .section-header {
            margin-bottom: var(--spacing-xl);
        }
        .section-header.text-center {
            text-align: center;
        }
        .section-header.text-center .section-subtitle {
            max-width: 680px;
            margin-left: auto;
            margin-right: auto;
        }

        /* ========== CAPABILITY CARDS ========== */
        .capability-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: var(--spacing-md);
        }
        .capability-card {
            background: var(--white);
            border-radius: var(--radius-md);
            padding: var(--spacing-lg);
            box-shadow: var(--card-shadow);
            border: 1px solid var(--gray-150);
            transition: all var(--transition-normal);
            display: flex;
            flex-direction: column;
            gap: var(--spacing-sm);
            min-height: 220px;
        }
        .capability-card:hover {
            box-shadow: var(--card-shadow-hover);
            transform: translateY(-3px);
            border-color: var(--primary-soft);
        }
        .capability-card .cap-icon {
            width: 48px;
            height: 48px;
            border-radius: var(--radius-sm);
            background: var(--primary-bg);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--primary);
            font-size: 22px;
            flex-shrink: 0;
        }
        .capability-card h3 {
            font-size: 18px;
            font-weight: 700;
            color: var(--gray-900);
            margin: 0;
        }
        .capability-card p {
            font-size: 14px;
            color: var(--gray-600);
            margin: 0;
            line-height: 1.7;
        }
        @media (max-width: 992px) {
            .capability-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }
        @media (max-width: 768px) {
            .capability-grid {
                grid-template-columns: 1fr;
            }
            .capability-card {
                min-height: auto;
            }
        }

        /* ========== COVERAGE SECTION ========== */
        .coverage-block {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: var(--spacing-xl);
            align-items: center;
            background: var(--gray-100);
            border-radius: var(--radius-lg);
            padding: var(--spacing-xl);
        }
        .coverage-block .coverage-image img {
            border-radius: var(--radius-md);
            width: 100%;
            object-fit: cover;
            box-shadow: var(--card-shadow);
        }
        .coverage-block .coverage-text h3 {
            font-size: 22px;
            font-weight: 700;
            color: var(--gray-900);
            margin-bottom: var(--spacing-sm);
        }
        .coverage-block .coverage-text p {
            font-size: 15px;
            color: var(--gray-600);
            line-height: 1.8;
            margin-bottom: var(--spacing-sm);
        }
        .coverage-stats {
            display: flex;
            gap: var(--spacing-lg);
            flex-wrap: wrap;
            margin-top: var(--spacing-md);
        }
        .coverage-stat {
            text-align: center;
            flex: 1;
            min-width: 80px;
        }
        .coverage-stat .stat-num {
            font-size: 36px;
            font-weight: 700;
            color: var(--primary-dark);
            line-height: 1.1;
        }
        .coverage-stat .stat-label {
            font-size: 13px;
            color: var(--gray-500);
            margin-top: 4px;
        }
        @media (max-width: 768px) {
            .coverage-block {
                grid-template-columns: 1fr;
                padding: var(--spacing-lg);
                gap: var(--spacing-lg);
            }
            .coverage-stats {
                gap: var(--spacing-sm);
            }
            .coverage-stat .stat-num {
                font-size: 28px;
            }
        }

        /* ========== PROCESS STEPS ========== */
        .process-steps {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: var(--spacing-md);
            position: relative;
        }
        .process-step {
            text-align: center;
            position: relative;
            z-index: 1;
            background: var(--white);
            border-radius: var(--radius-md);
            padding: var(--spacing-lg) var(--spacing-sm);
            box-shadow: var(--card-shadow);
            border: 1px solid var(--gray-150);
        }
        .process-step .step-num {
            width: 44px;
            height: 44px;
            border-radius: 50%;
            background: var(--primary);
            color: #fff;
            font-weight: 700;
            font-size: 18px;
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto var(--spacing-sm);
        }
        .process-step h4 {
            font-size: 16px;
            font-weight: 700;
            color: var(--gray-900);
            margin-bottom: 4px;
        }
        .process-step p {
            font-size: 13px;
            color: var(--gray-500);
            margin: 0;
            line-height: 1.6;
        }
        @media (max-width: 992px) {
            .process-steps {
                grid-template-columns: repeat(2, 1fr);
            }
        }
        @media (max-width: 520px) {
            .process-steps {
                grid-template-columns: 1fr;
            }
        }

        /* ========== SCENARIO CARDS ========== */
        .scenario-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: var(--spacing-md);
        }
        .scenario-card {
            background: var(--white);
            border-radius: var(--radius-md);
            padding: var(--spacing-lg);
            box-shadow: var(--card-shadow);
            border-left: 4px solid var(--primary);
            transition: all var(--transition-normal);
        }
        .scenario-card:hover {
            box-shadow: var(--card-shadow-hover);
            transform: translateY(-2px);
        }
        .scenario-card h4 {
            font-size: 17px;
            font-weight: 700;
            color: var(--gray-900);
            margin-bottom: 6px;
        }
        .scenario-card p {
            font-size: 14px;
            color: var(--gray-600);
            margin: 0;
            line-height: 1.7;
        }
        @media (max-width: 992px) {
            .scenario-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }
        @media (max-width: 768px) {
            .scenario-grid {
                grid-template-columns: 1fr;
            }
        }

        /* ========== CASE CARDS ========== */
        .case-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: var(--spacing-md);
        }
        .case-card {
            background: var(--white);
            border-radius: var(--radius-md);
            overflow: hidden;
            box-shadow: var(--card-shadow);
            border: 1px solid var(--gray-150);
            transition: all var(--transition-normal);
            cursor: pointer;
            display: flex;
            flex-direction: column;
        }
        .case-card:hover {
            box-shadow: var(--card-shadow-hover);
            transform: translateY(-3px);
            border-color: var(--primary-soft);
        }
        .case-card .case-image {
            height: 160px;
            overflow: hidden;
        }
        .case-card .case-image img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }
        .case-card .case-body {
            padding: var(--spacing-md);
            flex: 1;
            display: flex;
            flex-direction: column;
        }
        .case-card .case-date {
            font-size: 12px;
            color: var(--gray-400);
            margin-bottom: 6px;
        }
        .case-card .case-title {
            font-size: 16px;
            font-weight: 700;
            color: var(--gray-900);
            margin-bottom: 8px;
            line-height: 1.4;
        }
        .case-card .case-summary {
            font-size: 13px;
            color: var(--gray-600);
            line-height: 1.7;
            flex: 1;
            margin-bottom: var(--spacing-sm);
        }
        .case-card .btn-read-more {
            font-size: 13px;
            font-weight: 600;
            color: var(--primary-dark);
            display: inline-flex;
            align-items: center;
            gap: 4px;
            transition: all var(--transition-fast);
            align-self: flex-start;
        }
        .case-card .btn-read-more:hover {
            color: var(--primary-deep);
            gap: 8px;
        }
        @media (max-width: 992px) {
            .case-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }
        @media (max-width: 768px) {
            .case-grid {
                grid-template-columns: 1fr;
            }
            .case-card .case-image {
                height: 180px;
            }
        }

        /* ========== COMPARISON TABLE ========== */
        .compare-table-wrap {
            overflow-x: auto;
            -webkit-overflow-scrolling: touch;
        }
        .compare-table {
            width: 100%;
            border-collapse: separate;
            border-spacing: 0;
            border-radius: var(--radius-md);
            overflow: hidden;
            box-shadow: var(--card-shadow);
            min-width: 600px;
        }
        .compare-table thead th {
            background: var(--primary);
            color: #fff;
            padding: 14px 16px;
            font-size: 14px;
            font-weight: 600;
            text-align: center;
            white-space: nowrap;
        }
        .compare-table thead th:first-child {
            text-align: left;
            border-radius: var(--radius-md) 0 0 0;
        }
        .compare-table thead th:last-child {
            border-radius: 0 var(--radius-md) 0 0;
        }
        .compare-table tbody td {
            padding: 12px 16px;
            font-size: 14px;
            color: var(--gray-700);
            text-align: center;
            border-bottom: 1px solid var(--gray-150);
            background: var(--white);
        }
        .compare-table tbody tr:nth-child(even) td {
            background: var(--gray-50);
        }
        .compare-table tbody td:first-child {
            text-align: left;
            font-weight: 600;
            color: var(--gray-800);
        }
        .compare-table tbody td.highlight-cell {
            background: var(--primary-bg);
            font-weight: 600;
            color: var(--primary-dark);
        }
        .compare-table tbody tr:last-child td:first-child {
            border-radius: 0 0 0 var(--radius-md);
        }
        .compare-table tbody tr:last-child td:last-child {
            border-radius: 0 0 var(--radius-md) 0;
        }

        /* ========== FAQ ACCORDION ========== */
        .faq-list {
            max-width: 800px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: var(--spacing-sm);
        }
        .faq-item {
            background: var(--white);
            border: 1px solid var(--gray-200);
            border-radius: var(--radius-md);
            overflow: hidden;
            transition: all var(--transition-fast);
            box-shadow: var(--card-shadow);
        }
        .faq-item:hover {
            border-color: var(--primary-soft);
        }
        .faq-item .faq-question {
            width: 100%;
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 18px 20px;
            background: none;
            border: none;
            cursor: pointer;
            font-size: 16px;
            font-weight: 600;
            color: var(--gray-800);
            text-align: left;
            gap: 12px;
            transition: all var(--transition-fast);
            font-family: inherit;
        }
        .faq-item .faq-question:hover {
            color: var(--primary-dark);
        }
        .faq-item .faq-icon {
            width: 28px;
            height: 28px;
            border-radius: 50%;
            background: var(--primary-bg);
            display: flex;
            align-items: center;
            justify-content: center;
            flex-shrink: 0;
            transition: all var(--transition-fast);
            font-size: 14px;
            color: var(--primary);
        }
        .faq-item.open .faq-icon {
            background: var(--primary);
            color: #fff;
            transform: rotate(45deg);
        }
        .faq-item .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.35s ease, padding 0.35s ease;
            padding: 0 20px;
            font-size: 14px;
            color: var(--gray-600);
            line-height: 1.8;
        }
        .faq-item.open .faq-answer {
            max-height: 400px;
            padding: 0 20px 18px;
        }

        /* ========== CTA FORM ========== */
        .cta-form-section {
            background: var(--primary-bg);
            border-radius: var(--radius-lg);
            padding: var(--spacing-xl) var(--spacing-lg);
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: var(--spacing-xl);
            align-items: center;
        }
        .cta-form-section .cta-info h3 {
            font-size: 24px;
            font-weight: 700;
            color: var(--gray-900);
            margin-bottom: var(--spacing-sm);
        }
        .cta-form-section .cta-info p {
            font-size: 15px;
            color: var(--gray-600);
            line-height: 1.7;
            margin: 0;
        }
        .cta-form-row {
            display: flex;
            flex-wrap: wrap;
            gap: var(--spacing-sm);
            align-items: flex-end;
        }
        .cta-form-row input {
            flex: 1;
            min-width: 140px;
            padding: 12px 16px;
            border: 2px solid var(--gray-200);
            border-radius: var(--radius-sm);
            font-size: 14px;
            background: var(--white);
            transition: border-color var(--transition-fast);
            outline: none;
        }
        .cta-form-row input:focus {
            border-color: var(--primary);
            box-shadow: 0 0 0 3px rgba(13, 110, 253, 0.08);
        }
        .btn-cta-submit {
            padding: 12px 28px;
            background: var(--accent-orange);
            color: #fff;
            border: none;
            border-radius: var(--radius-sm);
            font-weight: 700;
            font-size: 15px;
            cursor: pointer;
            white-space: nowrap;
            transition: all var(--transition-fast);
            flex-shrink: 0;
        }
        .btn-cta-submit:hover {
            background: var(--accent-orange-hover);
            box-shadow: 0 6px 20px rgba(255, 111, 0, 0.3);
            transform: translateY(-2px);
        }
        @media (max-width: 768px) {
            .cta-form-section {
                grid-template-columns: 1fr;
                gap: var(--spacing-lg);
                padding: var(--spacing-lg);
            }
            .cta-form-row {
                flex-direction: column;
            }
            .cta-form-row input {
                width: 100%;
            }
            .btn-cta-submit {
                width: 100%;
                text-align: center;
            }
        }

        /* ========== FOOTER ========== */
        .site-footer {
            background: var(--footer-bg);
            color: var(--footer-text);
            padding: var(--spacing-2xl) 0 0;
            margin-top: var(--spacing-2xl);
        }
        .footer-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: var(--spacing-lg);
            padding-bottom: var(--spacing-xl);
            border-bottom: 1px solid rgba(255, 255, 255, 0.1);
        }
        .footer-col h4 {
            color: #fff;
            font-size: 16px;
            font-weight: 700;
            margin-bottom: var(--spacing-sm);
        }
        .footer-col p {
            font-size: 13px;
            line-height: 1.7;
            margin: 0;
        }
        .footer-col ul {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .footer-col ul li {
            margin-bottom: 6px;
        }
        .footer-col ul li a {
            color: var(--footer-text);
            font-size: 13px;
            transition: color var(--transition-fast);
        }
        .footer-col ul li a:hover {
            color: #fff;
        }
        .footer-bottom {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            justify-content: center;
            gap: 6px;
            padding: var(--spacing-md) 0;
            font-size: 13px;
            color: var(--footer-text);
        }
        .footer-bottom .divider {
            color: rgba(255, 255, 255, 0.2);
        }
        .footer-bottom a {
            color: var(--footer-text);
            font-size: 13px;
        }
        .footer-bottom a:hover {
            color: #fff;
        }
        @media (max-width: 768px) {
            .footer-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: var(--spacing-md);
            }
            .footer-bottom {
                font-size: 12px;
                gap: 4px;
            }
        }
        @media (max-width: 520px) {
            .footer-grid {
                grid-template-columns: 1fr;
            }
        }

        /* ========== UTILITY ========== */
        .bg-light-gray {
            background: var(--gray-100);
        }
        .bg-white {
            background: var(--white);
        }
        .text-center {
            text-align: center;
        }
        .mt-0 {
            margin-top: 0;
        }
        .mb-0 {
            margin-bottom: 0;
        }

/* roulang page: category3 */
:root {
            --primary: #0D6EFD;
            --primary-light: #3B8BFF;
            --primary-bg: #EBF3FA;
            --primary-soft: #D6E8FB;
            --primary-dark: #1565C0;
            --primary-deep: #0A4A9E;
            --accent-orange: #FF6F00;
            --accent-orange-hover: #E56500;
            --accent-orange-light: #FFF3E6;
            --gray-50: #F8F9FA;
            --gray-100: #F5F7FA;
            --gray-150: #EEF1F5;
            --gray-200: #E9ECEF;
            --gray-300: #DEE2E6;
            --gray-400: #ADB5BD;
            --gray-500: #6C757D;
            --gray-600: #495057;
            --gray-700: #343A40;
            --gray-800: #212529;
            --gray-900: #1A1D21;
            --footer-bg: #1E293B;
            --footer-text: #B0B8C4;
            --white: #FFFFFF;
            --card-shadow: 0 4px 12px rgba(0, 0, 0, 0.04);
            --card-shadow-hover: 0 8px 24px rgba(0, 0, 0, 0.08);
            --card-shadow-lg: 0 12px 32px rgba(0, 0, 0, 0.06);
            --radius-sm: 8px;
            --radius-md: 12px;
            --radius-lg: 16px;
            --radius-xl: 20px;
            --radius-chip: 20px;
            --spacing-xs: 8px;
            --spacing-sm: 16px;
            --spacing-md: 24px;
            --spacing-lg: 40px;
            --spacing-xl: 60px;
            --spacing-2xl: 80px;
            --spacing-3xl: 100px;
            --transition-fast: 0.2s ease;
            --transition-normal: 0.3s ease;
            --nav-height: 72px;
            --container-max: 1320px;
        }

        *,
        *::before,
        *::after {
            box-sizing: border-box;
        }

        html {
            scroll-behavior: smooth;
            scroll-padding-top: var(--nav-height);
        }

        body {
            font-family: 'PingFang SC', 'Microsoft YaHei', 'Helvetica Neue', Arial, sans-serif;
            font-size: 16px;
            line-height: 1.8;
            color: var(--gray-800);
            background-color: var(--white);
            background-image: linear-gradient(180deg, #F8FAFD 0%, #FFFFFF 100%);
            background-attachment: fixed;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            overflow-x: hidden;
            padding-top: var(--nav-height);
            margin: 0;
        }

        a {
            color: var(--primary-dark);
            text-decoration: none;
            transition: color var(--transition-fast);
        }

        a:hover {
            color: var(--primary-deep);
            text-decoration: none;
        }

        a:focus-visible {
            outline: 2px solid var(--primary);
            outline-offset: 3px;
            border-radius: 4px;
        }

        img {
            max-width: 100%;
            height: auto;
            display: block;
        }

        button,
        input,
        select,
        textarea {
            font-family: inherit;
            font-size: inherit;
        }

        h1,
        h2,
        h3,
        h4,
        h5,
        h6 {
            font-weight: 700;
            color: var(--gray-800);
            margin-top: 0;
        }

        h1 {
            font-size: 30px;
            line-height: 1.3;
        }

        h2 {
            font-size: 24px;
            line-height: 1.35;
        }

        h3 {
            font-size: 20px;
            line-height: 1.4;
            font-weight: 600;
        }

        p {
            margin-top: 0;
            margin-bottom: 1rem;
        }

        .container-custom {
            max-width: var(--container-max);
            margin: 0 auto;
            padding: 0 var(--spacing-md);
        }

        @media (max-width: 768px) {
            .container-custom {
                padding: 0 var(--spacing-sm);
            }
            h1 {
                font-size: 24px;
            }
            h2 {
                font-size: 20px;
            }
            h3 {
                font-size: 18px;
            }
            body {
                font-size: 15px;
            }
        }

        /* ========== NAVIGATION ========== */
        .site-nav {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1050;
            height: var(--nav-height);
            background: var(--white);
            border-bottom: 1px solid var(--gray-200);
            display: flex;
            align-items: center;
            transition: box-shadow var(--transition-normal);
        }

        .site-nav.scrolled {
            box-shadow: 0 2px 16px rgba(0, 0, 0, 0.06);
        }

        .nav-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            width: 100%;
            max-width: var(--container-max);
            margin: 0 auto;
            padding: 0 var(--spacing-md);
            height: 100%;
        }

        .nav-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 22px;
            font-weight: 700;
            color: var(--primary-dark);
            white-space: nowrap;
            flex-shrink: 0;
            text-decoration: none;
        }

        .nav-logo .logo-icon {
            width: 40px;
            height: 40px;
            background: var(--primary);
            border-radius: var(--radius-sm);
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-size: 18px;
            font-weight: 700;
            flex-shrink: 0;
        }

        .nav-logo:hover {
            color: var(--primary-deep);
        }

        .nav-chips {
            display: flex;
            align-items: center;
            gap: 6px;
            flex-wrap: nowrap;
            overflow-x: auto;
            scrollbar-width: none;
            -ms-overflow-style: none;
            padding: 0 4px;
        }

        .nav-chips::-webkit-scrollbar {
            display: none;
        }

        .nav-chip {
            display: inline-flex;
            align-items: center;
            padding: 8px 16px;
            border-radius: var(--radius-chip);
            font-size: 14px;
            font-weight: 500;
            color: var(--primary-dark);
            background: transparent;
            border: 1px solid var(--primary-soft);
            white-space: nowrap;
            transition: all var(--transition-fast);
            cursor: pointer;
            text-decoration: none;
            flex-shrink: 0;
        }

        .nav-chip:hover {
            background: var(--primary-bg);
            border-color: var(--primary);
            color: var(--primary-dark);
        }

        .nav-chip.active {
            background: var(--primary);
            color: #fff;
            border-color: var(--primary);
            font-weight: 600;
        }

        .nav-cta {
            display: inline-flex;
            align-items: center;
            padding: 10px 20px;
            border-radius: var(--radius-sm);
            font-size: 14px;
            font-weight: 600;
            background: var(--accent-orange);
            color: #fff;
            border: none;
            white-space: nowrap;
            transition: all var(--transition-fast);
            cursor: pointer;
            text-decoration: none;
            flex-shrink: 0;
        }

        .nav-cta:hover {
            background: var(--accent-orange-hover);
            color: #fff;
            box-shadow: 0 4px 14px rgba(255, 111, 0, 0.35);
            transform: translateY(-1px);
        }

        .nav-toggler {
            display: none;
            background: none;
            border: none;
            font-size: 24px;
            color: var(--gray-700);
            cursor: pointer;
            padding: 4px 8px;
            border-radius: var(--radius-sm);
        }

        .nav-toggler:hover {
            background: var(--gray-100);
        }

        @media (max-width: 1024px) {
            .nav-chips {
                gap: 4px;
            }
            .nav-chip {
                padding: 7px 12px;
                font-size: 13px;
            }
            .nav-cta {
                padding: 8px 16px;
                font-size: 13px;
            }
        }

        @media (max-width: 768px) {
            .nav-toggler {
                display: block;
            }
            .nav-chips {
                display: none;
                position: absolute;
                top: var(--nav-height);
                left: 0;
                right: 0;
                background: var(--white);
                flex-direction: column;
                padding: var(--spacing-sm);
                border-bottom: 1px solid var(--gray-200);
                box-shadow: 0 8px 24px rgba(0, 0, 0, 0.08);
                gap: 4px;
                z-index: 1049;
            }
            .nav-chips.open {
                display: flex;
            }
            .nav-chip {
                width: 100%;
                justify-content: center;
                border-radius: var(--radius-md);
                padding: 12px 16px;
                font-size: 15px;
            }
            .nav-cta {
                padding: 8px 14px;
                font-size: 13px;
            }
            .nav-logo {
                font-size: 18px;
            }
            .nav-logo .logo-icon {
                width: 34px;
                height: 34px;
                font-size: 15px;
            }
        }

        @media (max-width: 520px) {
            .nav-inner {
                padding: 0 var(--spacing-sm);
            }
            .nav-logo {
                font-size: 16px;
                gap: 6px;
            }
            .nav-logo .logo-icon {
                width: 30px;
                height: 30px;
                font-size: 13px;
            }
            .nav-cta {
                padding: 6px 12px;
                font-size: 12px;
            }
        }

        /* ========== BREADCRUMB ========== */
        .breadcrumb-section {
            background: var(--gray-100);
            padding: var(--spacing-sm) 0;
            border-bottom: 1px solid var(--gray-200);
        }

        .breadcrumb-nav {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 14px;
            color: var(--gray-500);
            flex-wrap: wrap;
        }

        .breadcrumb-nav a {
            color: var(--gray-600);
            text-decoration: none;
        }

        .breadcrumb-nav a:hover {
            color: var(--primary-dark);
        }

        .breadcrumb-nav .separator {
            color: var(--gray-400);
            user-select: none;
        }

        .breadcrumb-nav .current {
            color: var(--primary-dark);
            font-weight: 600;
        }

        /* ========== HERO BENTO ========== */
        .hero-bento {
            padding: var(--spacing-xl) 0;
            background: var(--white);
        }

        .hero-bento .bento-grid {
            display: grid;
            grid-template-columns: 1.6fr 1fr;
            grid-template-rows: auto auto;
            gap: var(--spacing-md);
            align-items: stretch;
        }

        .bento-main {
            grid-row: 1 / 3;
            background: var(--white);
            border-radius: var(--radius-lg);
            overflow: hidden;
            position: relative;
            box-shadow: var(--card-shadow-lg);
            display: flex;
            flex-direction: column;
            min-height: 400px;
            background-image: url('/assets/images/backpic/back-1.webp');
            background-size: cover;
            background-position: center;
        }

        .bento-main .bento-overlay {
            background: linear-gradient(135deg, rgba(13, 110, 253, 0.88) 0%, rgba(10, 74, 158, 0.92) 100%);
            padding: var(--spacing-xl) var(--spacing-lg);
            display: flex;
            flex-direction: column;
            justify-content: flex-end;
            flex: 1;
            color: #fff;
        }

        .bento-main .bento-overlay h1 {
            color: #fff;
            font-size: 32px;
            margin-bottom: var(--spacing-sm);
            font-weight: 700;
        }

        .bento-main .bento-overlay p {
            color: rgba(255, 255, 255, 0.9);
            font-size: 16px;
            line-height: 1.7;
            margin-bottom: var(--spacing-md);
            max-width: 600px;
        }

        .bento-main .bento-overlay .bento-cta-row {
            display: flex;
            gap: 12px;
            flex-wrap: wrap;
        }

        .bento-feature-card {
            background: var(--white);
            border-radius: var(--radius-lg);
            padding: var(--spacing-lg);
            box-shadow: var(--card-shadow-lg);
            display: flex;
            flex-direction: column;
            justify-content: center;
            transition: all var(--transition-normal);
            border: 1px solid var(--gray-150);
        }

        .bento-feature-card:hover {
            box-shadow: var(--card-shadow-hover);
            transform: translateY(-2px);
        }

        .bento-feature-card .feature-icon {
            width: 48px;
            height: 48px;
            background: var(--primary-bg);
            border-radius: var(--radius-md);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--primary);
            font-size: 22px;
            margin-bottom: var(--spacing-sm);
            flex-shrink: 0;
        }

        .bento-feature-card h3 {
            font-size: 18px;
            margin-bottom: 6px;
        }

        .bento-feature-card p {
            font-size: 14px;
            color: var(--gray-600);
            margin-bottom: 0;
            line-height: 1.6;
        }

        .bento-cta-strip {
            grid-column: 2;
            background: var(--accent-orange-light);
            border-radius: var(--radius-lg);
            padding: var(--spacing-md) var(--spacing-lg);
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 12px;
            border: 1px solid rgba(255, 111, 0, 0.15);
        }

        .bento-cta-strip .strip-text {
            font-weight: 600;
            color: var(--gray-800);
            font-size: 15px;
        }

        @media (max-width: 992px) {
            .hero-bento .bento-grid {
                grid-template-columns: 1fr;
                grid-template-rows: auto;
            }
            .bento-main {
                grid-row: auto;
                min-height: 300px;
            }
            .bento-cta-strip {
                grid-column: 1;
            }
            .bento-main .bento-overlay h1 {
                font-size: 26px;
            }
        }

        @media (max-width: 520px) {
            .bento-main {
                min-height: 240px;
            }
            .bento-main .bento-overlay {
                padding: var(--spacing-lg) var(--spacing-md);
            }
            .bento-main .bento-overlay h1 {
                font-size: 22px;
            }
            .bento-feature-card {
                padding: var(--spacing-md);
            }
        }

        /* ========== SECTION COMMON ========== */
        .section-block {
            padding: var(--spacing-2xl) 0;
        }

        .section-block.bg-light {
            background: var(--gray-100);
        }

        .section-block.bg-white {
            background: var(--white);
        }

        .section-block.bg-primary-soft {
            background: var(--primary-bg);
        }

        .section-header {
            margin-bottom: var(--spacing-xl);
            text-align: center;
        }

        .section-header h2 {
            margin-bottom: var(--spacing-xs);
            color: var(--gray-800);
        }

        .section-header .section-subtitle {
            color: var(--gray-500);
            font-size: 16px;
            max-width: 700px;
            margin: 0 auto;
        }

        .section-header.left-align {
            text-align: left;
        }

        .section-header.left-align .section-subtitle {
            margin: 0;
        }

        /* ========== METRICS DASHBOARD ========== */
        .metrics-dashboard {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: var(--spacing-md);
        }

        .metric-card {
            background: var(--white);
            border-radius: var(--radius-lg);
            padding: var(--spacing-lg);
            box-shadow: var(--card-shadow);
            border: 1px solid var(--gray-150);
            text-align: center;
            transition: all var(--transition-normal);
            position: relative;
            overflow: hidden;
        }

        .metric-card:hover {
            box-shadow: var(--card-shadow-hover);
            transform: translateY(-3px);
        }

        .metric-card .metric-number {
            font-size: 42px;
            font-weight: 700;
            color: var(--primary-dark);
            line-height: 1.1;
            margin-bottom: 4px;
        }

        .metric-card .metric-label {
            font-size: 14px;
            color: var(--gray-500);
            font-weight: 500;
        }

        .metric-card .metric-trend {
            display: inline-flex;
            align-items: center;
            gap: 4px;
            font-size: 13px;
            font-weight: 600;
            margin-top: 8px;
            padding: 4px 10px;
            border-radius: var(--radius-chip);
        }

        .metric-card .metric-trend.up {
            color: #16A34A;
            background: #F0FDF4;
        }

        .metric-card .metric-trend.down {
            color: #DC2626;
            background: #FEF2F2;
        }

        .metric-card .metric-trend.stable {
            color: var(--gray-600);
            background: var(--gray-100);
        }

        .metric-card .metric-mini-bar {
            height: 4px;
            background: var(--gray-200);
            border-radius: 2px;
            margin-top: 10px;
            overflow: hidden;
        }

        .metric-card .metric-mini-bar .fill {
            height: 100%;
            background: var(--primary);
            border-radius: 2px;
            transition: width 1s ease;
        }

        @media (max-width: 992px) {
            .metrics-dashboard {
                grid-template-columns: repeat(2, 1fr);
            }
            .metric-card .metric-number {
                font-size: 34px;
            }
        }

        @media (max-width: 520px) {
            .metrics-dashboard {
                grid-template-columns: 1fr 1fr;
                gap: var(--spacing-sm);
            }
            .metric-card {
                padding: var(--spacing-md);
            }
            .metric-card .metric-number {
                font-size: 28px;
            }
        }

        /* ========== SERVICE MATRIX ========== */
        .service-matrix {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: var(--spacing-md);
        }

        .service-matrix .service-card-wide {
            grid-column: 1 / -1;
            display: flex;
            background: var(--white);
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--card-shadow);
            border: 1px solid var(--gray-150);
            transition: all var(--transition-normal);
            min-height: 240px;
        }

        .service-matrix .service-card-wide:hover {
            box-shadow: var(--card-shadow-hover);
        }

        .service-matrix .service-card-wide .service-img {
            width: 40%;
            flex-shrink: 0;
            object-fit: cover;
            min-height: 240px;
        }

        .service-matrix .service-card-wide .service-body {
            padding: var(--spacing-lg);
            display: flex;
            flex-direction: column;
            justify-content: center;
            flex: 1;
        }

        .service-matrix .service-card-standard {
            background: var(--white);
            border-radius: var(--radius-lg);
            padding: var(--spacing-lg);
            box-shadow: var(--card-shadow);
            border: 1px solid var(--gray-150);
            transition: all var(--transition-normal);
            display: flex;
            flex-direction: column;
            gap: 10px;
        }

        .service-matrix .service-card-standard:hover {
            box-shadow: var(--card-shadow-hover);
            transform: translateY(-2px);
        }

        .service-matrix .service-card-standard .svc-icon {
            width: 44px;
            height: 44px;
            background: var(--primary-bg);
            border-radius: var(--radius-md);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--primary);
            font-size: 20px;
            flex-shrink: 0;
        }

        .service-matrix .service-card-standard h3 {
            font-size: 18px;
            margin-bottom: 0;
        }

        .service-matrix .service-card-standard p {
            font-size: 14px;
            color: var(--gray-600);
            margin-bottom: 0;
            line-height: 1.7;
        }

        .service-matrix .text-link {
            font-weight: 600;
            font-size: 14px;
            color: var(--primary-dark);
            display: inline-flex;
            align-items: center;
            gap: 4px;
            transition: gap var(--transition-fast);
        }

        .service-matrix .text-link:hover {
            gap: 8px;
            color: var(--primary-deep);
        }

        @media (max-width: 768px) {
            .service-matrix {
                grid-template-columns: 1fr;
            }
            .service-matrix .service-card-wide {
                flex-direction: column;
            }
            .service-matrix .service-card-wide .service-img {
                width: 100%;
                min-height: 180px;
                max-height: 220px;
            }
        }

        /* ========== ARTICLE LIST ========== */
        .article-list-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: var(--spacing-md);
        }

        .article-card {
            background: var(--white);
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--card-shadow);
            border: 1px solid var(--gray-150);
            transition: all var(--transition-normal);
            display: flex;
            flex-direction: column;
            cursor: pointer;
        }

        .article-card:hover {
            box-shadow: var(--card-shadow-hover);
            transform: translateY(-3px);
        }

        .article-card .article-img {
            width: 100%;
            height: 180px;
            object-fit: cover;
        }

        .article-card .article-body {
            padding: var(--spacing-md);
            display: flex;
            flex-direction: column;
            flex: 1;
        }

        .article-card .article-date {
            font-size: 12px;
            color: var(--gray-400);
            margin-bottom: 6px;
        }

        .article-card .article-title {
            font-size: 17px;
            font-weight: 600;
            color: var(--gray-800);
            margin-bottom: 8px;
            line-height: 1.4;
        }

        .article-card .article-summary {
            font-size: 14px;
            color: var(--gray-600);
            line-height: 1.7;
            flex: 1;
            margin-bottom: var(--spacing-sm);
        }

        .article-card .read-more-btn {
            display: inline-flex;
            align-items: center;
            gap: 4px;
            font-weight: 600;
            font-size: 14px;
            color: var(--primary-dark);
            transition: gap var(--transition-fast);
            align-self: flex-start;
            text-decoration: none;
        }

        .article-card .read-more-btn:hover {
            gap: 8px;
            color: var(--primary-deep);
        }

        @media (max-width: 992px) {
            .article-list-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }

        @media (max-width: 520px) {
            .article-list-grid {
                grid-template-columns: 1fr;
            }
            .article-card .article-img {
                height: 200px;
            }
        }

        /* ========== PAGINATION ========== */
        .pagination-row {
            display: flex;
            justify-content: center;
            align-items: center;
            gap: 6px;
            flex-wrap: wrap;
            padding: var(--spacing-lg) 0;
        }

        .pagination-row .page-btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 40px;
            height: 40px;
            border-radius: var(--radius-sm);
            font-size: 14px;
            font-weight: 500;
            color: var(--gray-700);
            background: var(--white);
            border: 1px solid var(--gray-300);
            cursor: pointer;
            transition: all var(--transition-fast);
            text-decoration: none;
        }

        .pagination-row .page-btn:hover {
            background: var(--primary-bg);
            border-color: var(--primary);
            color: var(--primary-dark);
        }

        .pagination-row .page-btn.active {
            background: var(--primary);
            color: #fff;
            border-color: var(--primary);
            font-weight: 600;
        }

        .pagination-row .page-btn.disabled {
            opacity: 0.4;
            pointer-events: none;
        }

        /* ========== COMPARISON TABLE ========== */
        .comparison-wrapper {
            overflow-x: auto;
            -webkit-overflow-scrolling: touch;
        }

        .comparison-table {
            width: 100%;
            border-collapse: separate;
            border-spacing: 0;
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--card-shadow);
            border: 1px solid var(--gray-200);
        }

        .comparison-table thead th {
            background: var(--primary);
            color: #fff;
            padding: 14px 16px;
            font-size: 15px;
            font-weight: 600;
            text-align: center;
            white-space: nowrap;
        }

        .comparison-table thead th:first-child {
            text-align: left;
            border-radius: var(--radius-lg) 0 0 0;
        }

        .comparison-table thead th:last-child {
            border-radius: 0 var(--radius-lg) 0 0;
        }

        .comparison-table tbody td {
            padding: 14px 16px;
            font-size: 14px;
            text-align: center;
            border-bottom: 1px solid var(--gray-150);
            background: var(--white);
            transition: background var(--transition-fast);
        }

        .comparison-table tbody tr:nth-child(even) td {
            background: var(--gray-50);
        }

        .comparison-table tbody tr:hover td {
            background: var(--primary-bg);
        }

        .comparison-table tbody td:first-child {
            text-align: left;
            font-weight: 600;
            color: var(--gray-700);
        }

        .comparison-table .highlight-cell {
            background: #F0F7FF !important;
            font-weight: 600;
            color: var(--primary-dark);
        }

        .comparison-table .check-icon {
            color: #16A34A;
            font-size: 16px;
        }

        .comparison-table .cross-icon {
            color: #DC2626;
            font-size: 16px;
        }

        @media (max-width: 768px) {
            .comparison-table thead th,
            .comparison-table tbody td {
                padding: 10px 12px;
                font-size: 13px;
            }
        }

        /* ========== FAQ ACCORDION ========== */
        .faq-accordion {
            max-width: 900px;
            margin: 0 auto;
        }

        .faq-item {
            background: var(--white);
            border-radius: var(--radius-md);
            margin-bottom: 12px;
            border: 1px solid var(--gray-200);
            overflow: hidden;
            transition: all var(--transition-fast);
        }

        .faq-item:hover {
            box-shadow: var(--card-shadow);
        }

        .faq-question {
            padding: 18px 20px;
            cursor: pointer;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 12px;
            font-weight: 600;
            font-size: 16px;
            color: var(--gray-800);
            user-select: none;
            transition: background var(--transition-fast);
            background: var(--white);
            border: none;
            width: 100%;
            text-align: left;
        }

        .faq-question:hover {
            background: var(--gray-50);
        }

        .faq-question .faq-icon {
            width: 28px;
            height: 28px;
            border-radius: 50%;
            background: var(--primary-bg);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 14px;
            color: var(--primary);
            flex-shrink: 0;
            transition: transform var(--transition-fast);
        }

        .faq-item.open .faq-question .faq-icon {
            transform: rotate(45deg);
            background: var(--primary);
            color: #fff;
        }

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.4s ease, padding 0.4s ease;
            padding: 0 20px;
        }

        .faq-item.open .faq-answer {
            max-height: 500px;
            padding: 0 20px 18px;
        }

        .faq-answer p {
            font-size: 15px;
            color: var(--gray-600);
            line-height: 1.8;
            margin: 0;
        }

        /* ========== CTA FORM ========== */
        .cta-form-card {
            background: var(--white);
            border-radius: var(--radius-lg);
            box-shadow: var(--card-shadow-lg);
            border: 1px solid var(--primary-soft);
            overflow: hidden;
            display: flex;
            flex-wrap: wrap;
        }

        .cta-form-card .cta-form-left {
            flex: 1;
            min-width: 300px;
            padding: var(--spacing-xl) var(--spacing-lg);
            background: var(--primary-bg);
            display: flex;
            flex-direction: column;
            justify-content: center;
        }

        .cta-form-card .cta-form-left h2 {
            color: var(--primary-dark);
            margin-bottom: 8px;
        }

        .cta-form-card .cta-form-left p {
            color: var(--gray-600);
            font-size: 15px;
            margin-bottom: 0;
            line-height: 1.7;
        }

        .cta-form-card .cta-form-right {
            flex: 1;
            min-width: 300px;
            padding: var(--spacing-xl) var(--spacing-lg);
            display: flex;
            flex-direction: column;
            justify-content: center;
            gap: 12px;
        }

        .cta-form-card .form-row {
            display: flex;
            gap: 12px;
            flex-wrap: wrap;
        }

        .cta-form-card input {
            flex: 1;
            min-width: 140px;
            padding: 12px 16px;
            border-radius: var(--radius-sm);
            border: 1px solid var(--gray-300);
            font-size: 15px;
            transition: border-color var(--transition-fast);
            background: var(--white);
        }

        .cta-form-card input:focus {
            outline: none;
            border-color: var(--primary);
            box-shadow: 0 0 0 3px rgba(13, 110, 253, 0.1);
        }

        .btn-primary-orange {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            padding: 14px 28px;
            border-radius: var(--radius-sm);
            font-size: 16px;
            font-weight: 600;
            background: var(--accent-orange);
            color: #fff;
            border: none;
            cursor: pointer;
            transition: all var(--transition-fast);
            white-space: nowrap;
            text-decoration: none;
        }

        .btn-primary-orange:hover {
            background: var(--accent-orange-hover);
            box-shadow: 0 6px 20px rgba(255, 111, 0, 0.35);
            transform: translateY(-2px);
            color: #fff;
        }

        .btn-outline-blue {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            padding: 12px 24px;
            border-radius: var(--radius-sm);
            font-size: 15px;
            font-weight: 600;
            background: transparent;
            color: var(--primary-dark);
            border: 2px solid var(--primary-soft);
            cursor: pointer;
            transition: all var(--transition-fast);
            white-space: nowrap;
            text-decoration: none;
        }

        .btn-outline-blue:hover {
            background: var(--primary-bg);
            border-color: var(--primary);
            color: var(--primary-deep);
        }

        @media (max-width: 768px) {
            .cta-form-card .cta-form-left,
            .cta-form-card .cta-form-right {
                padding: var(--spacing-lg) var(--spacing-md);
            }
            .btn-primary-orange {
                width: 100%;
                padding: 14px 20px;
            }
        }

        /* ========== DEEP CONTENT ========== */
        .deep-content-block {
            display: flex;
            gap: var(--spacing-xl);
            align-items: center;
            flex-wrap: wrap;
        }

        .deep-content-block.reverse {
            flex-direction: row-reverse;
        }

        .deep-content-block .deep-text {
            flex: 1;
            min-width: 280px;
        }

        .deep-content-block .deep-text h2 {
            margin-bottom: var(--spacing-sm);
        }

        .deep-content-block .deep-text p {
            color: var(--gray-600);
            line-height: 1.85;
            font-size: 15px;
        }

        .deep-content-block .deep-image {
            flex: 1;
            min-width: 280px;
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--card-shadow);
        }

        .deep-content-block .deep-image img {
            width: 100%;
            height: 320px;
            object-fit: cover;
        }

        @media (max-width: 768px) {
            .deep-content-block {
                flex-direction: column;
                gap: var(--spacing-md);
            }
            .deep-content-block.reverse {
                flex-direction: column;
            }
            .deep-content-block .deep-image img {
                height: 240px;
            }
        }

        /* ========== TAG CLOUD ========== */
        .tag-cloud {
            display: flex;
            flex-wrap: wrap;
            gap: 8px;
            justify-content: center;
        }

        .tag-chip {
            display: inline-flex;
            padding: 8px 16px;
            border-radius: var(--radius-chip);
            font-size: 13px;
            font-weight: 500;
            background: var(--white);
            border: 1px solid var(--gray-300);
            color: var(--gray-600);
            cursor: pointer;
            transition: all var(--transition-fast);
            text-decoration: none;
        }

        .tag-chip:hover {
            background: var(--primary-bg);
            border-color: var(--primary);
            color: var(--primary-dark);
        }

        /* ========== FOOTER ========== */
        .site-footer {
            background: var(--footer-bg);
            color: var(--footer-text);
            padding: var(--spacing-2xl) 0 var(--spacing-lg);
            margin-top: 0;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: var(--spacing-xl);
            margin-bottom: var(--spacing-xl);
        }

        .footer-col h4 {
            color: #fff;
            font-size: 16px;
            margin-bottom: var(--spacing-sm);
            font-weight: 600;
        }

        .footer-col p {
            font-size: 14px;
            line-height: 1.7;
            color: var(--footer-text);
            margin-bottom: 0;
        }

        .footer-col ul {
            list-style: none;
            padding: 0;
            margin: 0;
        }

        .footer-col ul li {
            margin-bottom: 8px;
        }

        .footer-col ul li a {
            color: var(--footer-text);
            font-size: 14px;
            text-decoration: none;
            transition: color var(--transition-fast);
        }

        .footer-col ul li a:hover {
            color: #fff;
        }

        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            padding-top: var(--spacing-md);
            display: flex;
            flex-wrap: wrap;
            justify-content: center;
            align-items: center;
            gap: 4px;
            font-size: 13px;
            color: var(--footer-text);
            text-align: center;
        }

        .footer-bottom .divider {
            margin: 0 6px;
            opacity: 0.5;
        }

        .footer-bottom a {
            color: var(--footer-text);
            text-decoration: none;
            font-size: 13px;
        }

        .footer-bottom a:hover {
            color: #fff;
        }

        @media (max-width: 768px) {
            .footer-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: var(--spacing-lg);
            }
        }

        @media (max-width: 520px) {
            .footer-grid {
                grid-template-columns: 1fr;
                gap: var(--spacing-md);
            }
            .footer-bottom {
                flex-direction: column;
                gap: 2px;
            }
            .footer-bottom .divider {
                display: none;
            }
        }

/* roulang page: category1 */
:root {
            --primary: #0D6EFD;
            --primary-light: #3B8BFF;
            --primary-bg: #EBF3FA;
            --primary-soft: #D6E8FB;
            --primary-dark: #1565C0;
            --primary-deep: #0A4A9E;
            --accent-orange: #FF6F00;
            --accent-orange-hover: #E56500;
            --accent-orange-light: #FFF3E6;
            --gray-50: #F8F9FA;
            --gray-100: #F5F7FA;
            --gray-150: #EEF1F5;
            --gray-200: #E9ECEF;
            --gray-300: #DEE2E6;
            --gray-400: #ADB5BD;
            --gray-500: #6C757D;
            --gray-600: #495057;
            --gray-700: #343A40;
            --gray-800: #212529;
            --gray-900: #1A1D21;
            --footer-bg: #1E293B;
            --footer-text: #B0B8C4;
            --white: #FFFFFF;
            --card-shadow: 0 4px 12px rgba(0, 0, 0, 0.04);
            --card-shadow-hover: 0 8px 24px rgba(0, 0, 0, 0.08);
            --card-shadow-lg: 0 12px 32px rgba(0, 0, 0, 0.06);
            --radius-sm: 8px;
            --radius-md: 12px;
            --radius-lg: 16px;
            --radius-xl: 20px;
            --radius-chip: 20px;
            --spacing-xs: 8px;
            --spacing-sm: 16px;
            --spacing-md: 24px;
            --spacing-lg: 40px;
            --spacing-xl: 60px;
            --spacing-2xl: 80px;
            --spacing-3xl: 100px;
            --transition-fast: 0.2s ease;
            --transition-normal: 0.3s ease;
            --nav-height: 72px;
            --container-max: 1320px;
        }

        html {
            scroll-behavior: smooth;
            scroll-padding-top: var(--nav-height);
        }

        body {
            font-family: 'PingFang SC', 'Microsoft YaHei', 'Helvetica Neue', Arial, sans-serif;
            font-size: 16px;
            line-height: 1.8;
            color: var(--gray-800);
            background-color: var(--white);
            background-image: linear-gradient(180deg, #F8FAFD 0%, #FFFFFF 100%);
            background-attachment: fixed;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            overflow-x: hidden;
            padding-top: var(--nav-height);
        }

        a {
            color: var(--primary-dark);
            text-decoration: none;
            transition: color var(--transition-fast);
        }

        a:hover {
            color: var(--primary-deep);
            text-decoration: none;
        }

        a:focus-visible {
            outline: 2px solid var(--primary);
            outline-offset: 3px;
            border-radius: 4px;
        }

        img {
            max-width: 100%;
            height: auto;
            display: block;
        }

        button,
        input,
        select,
        textarea {
            font-family: inherit;
            font-size: inherit;
        }

        .container-custom {
            max-width: var(--container-max);
            margin: 0 auto;
            padding: 0 var(--spacing-md);
        }

        @media (max-width: 768px) {
            .container-custom {
                padding: 0 var(--spacing-sm);
            }
        }

        /* ========== NAVIGATION ========== */
        .site-nav {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1050;
            height: var(--nav-height);
            background: var(--white);
            border-bottom: 1px solid var(--gray-200);
            display: flex;
            align-items: center;
            transition: box-shadow var(--transition-normal);
        }

        .site-nav.scrolled {
            box-shadow: 0 2px 16px rgba(0, 0, 0, 0.06);
        }

        .nav-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            width: 100%;
            max-width: var(--container-max);
            margin: 0 auto;
            padding: 0 var(--spacing-md);
            height: 100%;
        }

        .nav-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 22px;
            font-weight: 700;
            color: var(--primary-dark);
            white-space: nowrap;
            flex-shrink: 0;
        }

        .nav-logo .logo-icon {
            width: 40px;
            height: 40px;
            background: var(--primary);
            border-radius: var(--radius-sm);
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-size: 18px;
            font-weight: 700;
            flex-shrink: 0;
        }

        .nav-logo:hover {
            color: var(--primary-deep);
        }

        .nav-chips {
            display: flex;
            align-items: center;
            gap: 6px;
            flex-wrap: nowrap;
            overflow-x: auto;
            scrollbar-width: none;
            -ms-overflow-style: none;
            padding: 0 4px;
        }

        .nav-chips::-webkit-scrollbar {
            display: none;
        }

        .nav-chip {
            display: inline-flex;
            align-items: center;
            padding: 8px 16px;
            border-radius: var(--radius-chip);
            font-size: 14px;
            font-weight: 500;
            color: var(--primary-dark);
            background: transparent;
            border: 1px solid var(--primary-soft);
            white-space: nowrap;
            transition: all var(--transition-fast);
            cursor: pointer;
            text-decoration: none;
            flex-shrink: 0;
        }

        .nav-chip:hover {
            background: var(--primary-bg);
            border-color: var(--primary-light);
            color: var(--primary-dark);
        }

        .nav-chip.active {
            background: var(--primary);
            color: #fff;
            border-color: var(--primary);
            font-weight: 600;
            box-shadow: 0 2px 8px rgba(13, 110, 253, 0.25);
        }

        .nav-cta {
            display: inline-flex;
            align-items: center;
            padding: 10px 20px;
            border-radius: var(--radius-sm);
            font-size: 14px;
            font-weight: 600;
            background: var(--accent-orange);
            color: #fff;
            border: none;
            white-space: nowrap;
            transition: all var(--transition-fast);
            cursor: pointer;
            text-decoration: none;
            flex-shrink: 0;
            margin-left: 12px;
        }

        .nav-cta:hover {
            background: var(--accent-orange-hover);
            color: #fff;
            box-shadow: 0 4px 14px rgba(255, 111, 0, 0.3);
            transform: translateY(-1px);
        }

        .nav-toggle {
            display: none;
            background: none;
            border: none;
            font-size: 24px;
            color: var(--gray-700);
            cursor: pointer;
            padding: 8px;
            flex-shrink: 0;
        }

        @media (max-width: 992px) {
            .nav-chips {
                gap: 4px;
            }
            .nav-chip {
                padding: 6px 12px;
                font-size: 13px;
            }
            .nav-cta {
                padding: 8px 14px;
                font-size: 13px;
                margin-left: 8px;
            }
        }

        @media (max-width: 768px) {
            .nav-toggle {
                display: block;
            }
            .nav-chips-wrapper {
                position: fixed;
                top: var(--nav-height);
                left: 0;
                right: 0;
                background: var(--white);
                border-bottom: 1px solid var(--gray-200);
                padding: var(--spacing-sm) var(--spacing-sm);
                display: none;
                flex-direction: column;
                gap: 6px;
                box-shadow: 0 8px 24px rgba(0, 0, 0, 0.08);
                z-index: 1049;
                max-height: 60vh;
                overflow-y: auto;
            }
            .nav-chips-wrapper.open {
                display: flex;
            }
            .nav-chips {
                flex-direction: column;
                gap: 4px;
                overflow-x: visible;
                padding: 0;
            }
            .nav-chip {
                width: 100%;
                text-align: center;
                justify-content: center;
                padding: 10px 16px;
                border-radius: var(--radius-sm);
                font-size: 15px;
            }
            .nav-cta {
                width: 100%;
                text-align: center;
                justify-content: center;
                margin-left: 0;
                margin-top: 4px;
                padding: 10px 16px;
                font-size: 15px;
            }
            .nav-inner {
                padding: 0 var(--spacing-sm);
            }
        }

        /* ========== BREADCRUMB ========== */
        .breadcrumb-section {
            background: var(--gray-50);
            padding: var(--spacing-sm) 0;
            border-bottom: 1px solid var(--gray-200);
        }

        .breadcrumb-custom {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 14px;
            color: var(--gray-500);
            list-style: none;
            padding: 0;
            margin: 0;
            flex-wrap: wrap;
        }

        .breadcrumb-custom li {
            display: inline-flex;
            align-items: center;
            gap: 8px;
        }

        .breadcrumb-custom a {
            color: var(--gray-600);
            transition: color var(--transition-fast);
        }

        .breadcrumb-custom a:hover {
            color: var(--primary-dark);
        }

        .breadcrumb-custom .separator {
            color: var(--gray-400);
            font-size: 12px;
        }

        .breadcrumb-custom .current {
            color: var(--primary-dark);
            font-weight: 600;
        }

        /* ========== HERO SECTION ========== */
        .category-hero {
            position: relative;
            background: url('/assets/images/backpic/back-1.webp') center/cover no-repeat;
            min-height: 380px;
            display: flex;
            align-items: center;
            overflow: hidden;
        }

        .category-hero::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(13, 110, 253, 0.88) 0%, rgba(10, 74, 158, 0.92) 100%);
            z-index: 1;
        }

        .category-hero .hero-content {
            position: relative;
            z-index: 2;
            width: 100%;
            padding: var(--spacing-xl) 0;
        }

        .category-hero .hero-badge {
            display: inline-block;
            background: rgba(255, 255, 255, 0.2);
            color: #fff;
            padding: 6px 16px;
            border-radius: var(--radius-chip);
            font-size: 13px;
            font-weight: 500;
            margin-bottom: var(--spacing-sm);
            backdrop-filter: blur(4px);
            border: 1px solid rgba(255, 255, 255, 0.25);
        }

        .category-hero h1 {
            font-size: 38px;
            font-weight: 700;
            color: #fff;
            margin-bottom: var(--spacing-sm);
            line-height: 1.3;
        }

        .category-hero .hero-desc {
            font-size: 17px;
            color: rgba(255, 255, 255, 0.9);
            max-width: 620px;
            line-height: 1.7;
            margin-bottom: var(--spacing-md);
        }

        .category-hero .hero-cta-row {
            display: flex;
            gap: 12px;
            flex-wrap: wrap;
        }

        .btn-primary-cta {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 13px 28px;
            border-radius: var(--radius-sm);
            font-size: 15px;
            font-weight: 600;
            background: var(--accent-orange);
            color: #fff;
            border: none;
            transition: all var(--transition-fast);
            cursor: pointer;
            text-decoration: none;
            box-shadow: 0 4px 14px rgba(255, 111, 0, 0.3);
        }

        .btn-primary-cta:hover {
            background: var(--accent-orange-hover);
            color: #fff;
            transform: translateY(-2px);
            box-shadow: 0 8px 22px rgba(255, 111, 0, 0.4);
        }

        .btn-outline-light-cta {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 13px 28px;
            border-radius: var(--radius-sm);
            font-size: 15px;
            font-weight: 600;
            background: transparent;
            color: #fff;
            border: 2px solid rgba(255, 255, 255, 0.6);
            transition: all var(--transition-fast);
            cursor: pointer;
            text-decoration: none;
        }

        .btn-outline-light-cta:hover {
            background: rgba(255, 255, 255, 0.15);
            border-color: #fff;
            color: #fff;
        }

        @media (max-width: 768px) {
            .category-hero {
                min-height: 300px;
            }
            .category-hero h1 {
                font-size: 28px;
            }
            .category-hero .hero-desc {
                font-size: 15px;
            }
            .btn-primary-cta,
            .btn-outline-light-cta {
                padding: 10px 20px;
                font-size: 14px;
            }
        }

        /* ========== METRICS BOARD ========== */
        .metrics-board {
            padding: var(--spacing-xl) 0;
            background: var(--white);
        }

        .metrics-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: var(--spacing-md);
        }

        .metric-card {
            background: var(--white);
            border-radius: var(--radius-md);
            padding: var(--spacing-md);
            border: 1px solid var(--gray-200);
            box-shadow: var(--card-shadow);
            transition: all var(--transition-fast);
            display: flex;
            flex-direction: column;
            gap: 8px;
        }

        .metric-card:hover {
            box-shadow: var(--card-shadow-hover);
            transform: translateY(-2px);
            border-color: var(--primary-soft);
        }

        .metric-card .metric-label {
            font-size: 13px;
            color: var(--gray-500);
            font-weight: 500;
            text-transform: uppercase;
            letter-spacing: 0.5px;
        }

        .metric-card .metric-value {
            font-size: 40px;
            font-weight: 700;
            color: var(--primary-dark);
            line-height: 1.1;
        }

        .metric-card .metric-sub {
            font-size: 13px;
            color: var(--gray-500);
            display: flex;
            align-items: center;
            gap: 6px;
        }

        .metric-card .metric-trend {
            display: inline-flex;
            align-items: center;
            gap: 4px;
            font-size: 12px;
            font-weight: 600;
            padding: 3px 8px;
            border-radius: 12px;
        }

        .metric-trend.up {
            background: #E8F5E9;
            color: #2E7D32;
        }

        .metric-trend.down {
            background: #FFEBEE;
            color: #C62828;
        }

        .metric-trend.stable {
            background: #FFF3E0;
            color: #E65100;
        }

        @media (max-width: 992px) {
            .metrics-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: var(--spacing-sm);
            }
            .metric-card .metric-value {
                font-size: 32px;
            }
        }

        @media (max-width: 520px) {
            .metrics-grid {
                grid-template-columns: 1fr;
            }
            .metric-card {
                flex-direction: row;
                align-items: center;
                justify-content: space-between;
                flex-wrap: wrap;
            }
            .metric-card .metric-value {
                font-size: 28px;
            }
        }

        /* ========== SERVICE HIGHLIGHT ========== */
        .service-highlight {
            padding: var(--spacing-2xl) 0;
            background: var(--gray-100);
        }

        .service-highlight-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: var(--spacing-xl);
            align-items: center;
        }

        .service-highlight-image {
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--card-shadow-lg);
        }

        .service-highlight-image img {
            width: 100%;
            height: 380px;
            object-fit: cover;
            border-radius: var(--radius-lg);
        }

        .service-highlight-text h2 {
            font-size: 28px;
            font-weight: 700;
            color: var(--gray-800);
            margin-bottom: var(--spacing-sm);
            line-height: 1.3;
        }

        .service-highlight-text p {
            font-size: 16px;
            color: var(--gray-600);
            line-height: 1.8;
            margin-bottom: var(--spacing-md);
        }

        .service-feature-list {
            list-style: none;
            padding: 0;
            margin: 0 0 var(--spacing-md) 0;
            display: flex;
            flex-direction: column;
            gap: 10px;
        }

        .service-feature-list li {
            display: flex;
            align-items: flex-start;
            gap: 10px;
            font-size: 15px;
            color: var(--gray-700);
            line-height: 1.6;
        }

        .service-feature-list li .check-icon {
            color: var(--primary);
            font-size: 16px;
            flex-shrink: 0;
            margin-top: 3px;
        }

        @media (max-width: 768px) {
            .service-highlight-grid {
                grid-template-columns: 1fr;
                gap: var(--spacing-lg);
            }
            .service-highlight-image img {
                height: 240px;
            }
            .service-highlight-text h2 {
                font-size: 24px;
            }
        }

        /* ========== TAG CLOUD ========== */
        .tag-cloud-section {
            padding: var(--spacing-xl) 0 var(--spacing-sm) 0;
            background: var(--white);
        }

        .tag-cloud-title {
            font-size: 20px;
            font-weight: 700;
            color: var(--gray-800);
            margin-bottom: var(--spacing-md);
            text-align: center;
        }

        .tag-cloud {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
            justify-content: center;
        }

        .tag-chip {
            display: inline-flex;
            align-items: center;
            padding: 8px 18px;
            border-radius: var(--radius-chip);
            font-size: 14px;
            font-weight: 500;
            background: var(--white);
            color: var(--primary-dark);
            border: 1px solid var(--primary-soft);
            transition: all var(--transition-fast);
            cursor: pointer;
            text-decoration: none;
        }

        .tag-chip:hover {
            background: var(--primary-bg);
            border-color: var(--primary-light);
            color: var(--primary-deep);
            box-shadow: 0 2px 8px rgba(13, 110, 253, 0.1);
        }

        .tag-chip.hot {
            background: var(--accent-orange-light);
            border-color: var(--accent-orange);
            color: var(--accent-orange);
            font-weight: 600;
        }

        /* ========== ARTICLE GRID ========== */
        .article-grid-section {
            padding: var(--spacing-xl) 0;
            background: var(--white);
        }

        .article-grid-section .section-title {
            font-size: 26px;
            font-weight: 700;
            color: var(--gray-800);
            margin-bottom: var(--spacing-xs);
            text-align: center;
        }

        .article-grid-section .section-subtitle {
            font-size: 15px;
            color: var(--gray-500);
            margin-bottom: var(--spacing-lg);
            text-align: center;
        }

        .article-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: var(--spacing-md);
        }

        .article-card {
            background: var(--white);
            border-radius: var(--radius-md);
            overflow: hidden;
            border: 1px solid var(--gray-200);
            box-shadow: var(--card-shadow);
            transition: all var(--transition-fast);
            display: flex;
            flex-direction: column;
            height: 100%;
        }

        .article-card:hover {
            box-shadow: var(--card-shadow-hover);
            transform: translateY(-3px);
            border-color: var(--primary-soft);
        }

        .article-card-image {
            height: 180px;
            overflow: hidden;
            flex-shrink: 0;
        }

        .article-card-image img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform var(--transition-normal);
        }

        .article-card:hover .article-card-image img {
            transform: scale(1.04);
        }

        .article-card-body {
            padding: var(--spacing-md);
            display: flex;
            flex-direction: column;
            flex: 1;
        }

        .article-card-date {
            font-size: 12px;
            color: var(--gray-400);
            margin-bottom: 6px;
            font-weight: 500;
        }

        .article-card-title {
            font-size: 17px;
            font-weight: 700;
            color: var(--gray-800);
            margin-bottom: 8px;
            line-height: 1.4;
        }

        .article-card-excerpt {
            font-size: 14px;
            color: var(--gray-600);
            line-height: 1.7;
            flex: 1;
            margin-bottom: var(--spacing-sm);
        }

        .article-card .read-more {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-size: 14px;
            font-weight: 600;
            color: var(--primary-dark);
            transition: all var(--transition-fast);
            margin-top: auto;
            text-decoration: none;
        }

        .article-card .read-more:hover {
            color: var(--primary-deep);
            gap: 10px;
        }

        .article-card .read-more i {
            font-size: 12px;
            transition: transform var(--transition-fast);
        }

        .article-card .read-more:hover i {
            transform: translateX(3px);
        }

        @media (max-width: 992px) {
            .article-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: var(--spacing-sm);
            }
        }

        @media (max-width: 520px) {
            .article-grid {
                grid-template-columns: 1fr;
            }
            .article-card-image {
                height: 200px;
            }
        }

        /* ========== PAGINATION ========== */
        .pagination-section {
            padding: 0 0 var(--spacing-xl) 0;
            background: var(--white);
            display: flex;
            justify-content: center;
        }

        .pagination-custom {
            display: flex;
            align-items: center;
            gap: 6px;
            flex-wrap: wrap;
            justify-content: center;
        }

        .pagination-custom .page-item {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            min-width: 40px;
            height: 40px;
            padding: 0 12px;
            border-radius: var(--radius-sm);
            font-size: 14px;
            font-weight: 500;
            color: var(--gray-600);
            background: var(--white);
            border: 1px solid var(--gray-300);
            transition: all var(--transition-fast);
            cursor: pointer;
            text-decoration: none;
        }

        .pagination-custom .page-item:hover {
            background: var(--primary-bg);
            border-color: var(--primary-light);
            color: var(--primary-dark);
        }

        .pagination-custom .page-item.active {
            background: var(--primary);
            color: #fff;
            border-color: var(--primary);
            font-weight: 600;
            box-shadow: 0 2px 8px rgba(13, 110, 253, 0.25);
            pointer-events: none;
        }

        .pagination-custom .page-item.disabled {
            opacity: 0.4;
            pointer-events: none;
            cursor: default;
        }

        .pagination-info {
            text-align: center;
            font-size: 13px;
            color: var(--gray-500);
            margin-bottom: var(--spacing-sm);
        }

        /* ========== COMPARISON TABLE ========== */
        .comparison-section {
            padding: var(--spacing-2xl) 0;
            background: var(--gray-100);
        }

        .comparison-section .section-title {
            font-size: 26px;
            font-weight: 700;
            color: var(--gray-800);
            text-align: center;
            margin-bottom: var(--spacing-lg);
        }

        .comparison-table-wrap {
            overflow-x: auto;
            -webkit-overflow-scrolling: touch;
            border-radius: var(--radius-md);
            box-shadow: var(--card-shadow-lg);
            background: var(--white);
        }

        .comparison-table {
            width: 100%;
            border-collapse: collapse;
            min-width: 600px;
        }

        .comparison-table thead th {
            background: var(--primary);
            color: #fff;
            padding: 14px 18px;
            font-size: 15px;
            font-weight: 600;
            text-align: center;
            white-space: nowrap;
        }

        .comparison-table thead th:first-child {
            text-align: left;
            border-radius: var(--radius-md) 0 0 0;
        }

        .comparison-table thead th:last-child {
            border-radius: 0 var(--radius-md) 0 0;
        }

        .comparison-table tbody td {
            padding: 14px 18px;
            font-size: 14px;
            color: var(--gray-700);
            text-align: center;
            border-bottom: 1px solid var(--gray-200);
            vertical-align: middle;
        }

        .comparison-table tbody td:first-child {
            text-align: left;
            font-weight: 600;
            color: var(--gray-800);
            background: var(--gray-50);
        }

        .comparison-table tbody tr:nth-child(even) td {
            background: var(--gray-50);
        }

        .comparison-table tbody tr:nth-child(even) td:first-child {
            background: var(--gray-150);
        }

        .comparison-table .highlight-col {
            background: #EBF5FF !important;
            font-weight: 600;
            color: var(--primary-dark);
        }

        .comparison-table .check-mark {
            color: #2E7D32;
            font-weight: 700;
            font-size: 16px;
        }

        .comparison-table .cross-mark {
            color: #C62828;
            font-weight: 700;
            font-size: 16px;
        }

        @media (max-width: 768px) {
            .comparison-table-wrap {
                border-radius: var(--radius-sm);
            }
            .comparison-table thead th,
            .comparison-table tbody td {
                padding: 10px 12px;
                font-size: 13px;
            }
        }

        /* ========== FAQ ========== */
        .faq-section {
            padding: var(--spacing-2xl) 0;
            background: var(--white);
        }

        .faq-section .section-title {
            font-size: 26px;
            font-weight: 700;
            color: var(--gray-800);
            text-align: center;
            margin-bottom: var(--spacing-lg);
        }

        .faq-accordion {
            max-width: 800px;
            margin: 0 auto;
        }

        .faq-item {
            background: var(--white);
            border: 1px solid var(--gray-200);
            border-radius: var(--radius-md);
            margin-bottom: var(--spacing-sm);
            overflow: hidden;
            transition: all var(--transition-fast);
            box-shadow: var(--card-shadow);
        }

        .faq-item:hover {
            box-shadow: var(--card-shadow-hover);
        }

        .faq-question {
            width: 100%;
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 18px 20px;
            background: none;
            border: none;
            cursor: pointer;
            font-size: 16px;
            font-weight: 600;
            color: var(--gray-800);
            text-align: left;
            gap: 12px;
            transition: background var(--transition-fast);
        }

        .faq-question:hover {
            background: var(--gray-50);
        }

        .faq-question .faq-icon {
            flex-shrink: 0;
            width: 32px;
            height: 32px;
            border-radius: 50%;
            background: var(--primary-bg);
            color: var(--primary);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 14px;
            transition: all var(--transition-fast);
        }

        .faq-item.open .faq-question .faq-icon {
            background: var(--primary);
            color: #fff;
            transform: rotate(45deg);
        }

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height var(--transition-normal), padding var(--transition-normal);
            padding: 0 20px;
        }

        .faq-item.open .faq-answer {
            max-height: 500px;
            padding: 0 20px 18px 20px;
        }

        .faq-answer p {
            font-size: 15px;
            color: var(--gray-600);
            line-height: 1.8;
            margin: 0;
        }

        /* ========== CTA SECTION ========== */
        .cta-section {
            padding: var(--spacing-2xl) 0;
            background: var(--primary-bg);
            position: relative;
            overflow: hidden;
        }

        .cta-section::before {
            content: '';
            position: absolute;
            top: -60px;
            right: -60px;
            width: 200px;
            height: 200px;
            border-radius: 50%;
            background: rgba(13, 110, 253, 0.06);
            pointer-events: none;
        }

        .cta-section::after {
            content: '';
            position: absolute;
            bottom: -40px;
            left: -40px;
            width: 160px;
            height: 160px;
            border-radius: 50%;
            background: rgba(13, 110, 253, 0.04);
            pointer-events: none;
        }

        .cta-card {
            position: relative;
            z-index: 1;
            background: var(--white);
            border-radius: var(--radius-lg);
            padding: var(--spacing-xl) var(--spacing-lg);
            box-shadow: var(--card-shadow-lg);
            display: flex;
            align-items: center;
            gap: var(--spacing-xl);
            flex-wrap: wrap;
            border: 1px solid var(--primary-soft);
        }

        .cta-card .cta-text {
            flex: 1;
            min-width: 260px;
        }

        .cta-card .cta-text h2 {
font-size: 24px;
            font-weight: 700;
            color: var(--gray-800);
            margin-bottom: var(--spacing-xs);
        }

        .cta-card .cta-text p {
            font-size: 15px;
            color: var(--gray-600);
            margin: 0;
            line-height: 1.7;
        }

        .cta-card .cta-form {
            display: flex;
            gap: 10px;
            flex-wrap: wrap;
            align-items: center;
            flex-shrink: 0;
        }

        .cta-card .cta-form input {
            padding: 12px 18px;
            border-radius: var(--radius-sm);
            border: 1px solid var(--gray-300);
            font-size: 14px;
            min-width: 220px;
            background: var(--white);
            transition: border-color var(--transition-fast);
            outline: none;
        }

        .cta-card .cta-form input:focus {
            border-color: var(--primary-light);
            box-shadow: 0 0 0 3px rgba(13, 110, 253, 0.08);
        }

        .btn-submit {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 12px 26px;
            border-radius: var(--radius-sm);
            font-size: 15px;
            font-weight: 600;
            background: var(--accent-orange);
            color: #fff;
            border: none;
            cursor: pointer;
            transition: all var(--transition-fast);
            white-space: nowrap;
            box-shadow: 0 4px 14px rgba(255, 111, 0, 0.25);
        }

        .btn-submit:hover {
            background: var(--accent-orange-hover);
            box-shadow: 0 6px 20px rgba(255, 111, 0, 0.35);
            transform: translateY(-1px);
        }

        @media (max-width: 768px) {
            .cta-card {
                flex-direction: column;
                text-align: center;
                padding: var(--spacing-lg) var(--spacing-md);
            }
            .cta-card .cta-form {
                flex-direction: column;
                width: 100%;
            }
            .cta-card .cta-form input {
                width: 100%;
                min-width: auto;
            }
            .btn-submit {
                width: 100%;
                justify-content: center;
            }
        }

        /* ========== FOOTER ========== */
        .site-footer {
            background: var(--footer-bg);
            color: var(--footer-text);
            padding: var(--spacing-xl) 0 0 0;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 1.5fr 1fr 1fr 1fr;
            gap: var(--spacing-lg);
            padding-bottom: var(--spacing-lg);
            border-bottom: 1px solid rgba(255, 255, 255, 0.1);
        }

        .footer-col h4 {
            font-size: 16px;
            font-weight: 700;
            color: #fff;
            margin-bottom: var(--spacing-sm);
        }

        .footer-col p {
            font-size: 14px;
            line-height: 1.7;
            margin: 0;
            color: var(--footer-text);
        }

        .footer-col ul {
            list-style: none;
            padding: 0;
            margin: 0;
            display: flex;
            flex-direction: column;
            gap: 8px;
        }

        .footer-col ul li a {
            font-size: 14px;
            color: var(--footer-text);
            transition: color var(--transition-fast);
            text-decoration: none;
        }

        .footer-col ul li a:hover {
            color: #fff;
        }

        .footer-bottom {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            justify-content: center;
            gap: 6px;
            padding: var(--spacing-md) 0;
            font-size: 13px;
            color: var(--footer-text);
            text-align: center;
        }

        .footer-bottom .divider {
            color: rgba(255, 255, 255, 0.2);
            font-size: 12px;
        }

        .footer-bottom a {
            color: var(--footer-text);
            text-decoration: none;
            transition: color var(--transition-fast);
        }

        .footer-bottom a:hover {
            color: #fff;
        }

        @media (max-width: 992px) {
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: var(--spacing-md);
            }
        }

        @media (max-width: 520px) {
            .footer-grid {
                grid-template-columns: 1fr;
            }
            .footer-bottom {
                flex-direction: column;
                gap: 4px;
            }
            .footer-bottom .divider {
                display: none;
            }
        }

        /* ========== ANIMATION ========== */
        @keyframes fadeInUp {
            from {
                opacity: 0;
                transform: translateY(20px);
            }
            to {
                opacity: 1;
                transform: translateY(0);
            }
        }

        .animate-fade-in {
            animation: fadeInUp 0.6s ease forwards;
        }

        .delay-100 {
            animation-delay: 0.1s;
        }

        .delay-200 {
            animation-delay: 0.2s;
        }

        .delay-300 {
            animation-delay: 0.3s;
        }

/* roulang page: category4 */
:root {
            --primary: #0D6EFD;
            --primary-light: #3B8BFF;
            --primary-bg: #EBF3FA;
            --primary-soft: #D6E8FB;
            --primary-dark: #1565C0;
            --primary-deep: #0A4A9E;
            --accent-orange: #FF6F00;
            --accent-orange-hover: #E56500;
            --accent-orange-light: #FFF3E6;
            --gray-50: #F8F9FA;
            --gray-100: #F5F7FA;
            --gray-150: #EEF1F5;
            --gray-200: #E9ECEF;
            --gray-300: #DEE2E6;
            --gray-400: #ADB5BD;
            --gray-500: #6C757D;
            --gray-600: #495057;
            --gray-700: #343A40;
            --gray-800: #212529;
            --gray-900: #1A1D21;
            --footer-bg: #1E293B;
            --footer-text: #B0B8C4;
            --white: #FFFFFF;
            --card-shadow: 0 4px 12px rgba(0, 0, 0, 0.04);
            --card-shadow-hover: 0 8px 24px rgba(0, 0, 0, 0.08);
            --card-shadow-lg: 0 12px 32px rgba(0, 0, 0, 0.06);
            --radius-sm: 8px;
            --radius-md: 12px;
            --radius-lg: 16px;
            --radius-xl: 20px;
            --radius-chip: 20px;
            --spacing-xs: 8px;
            --spacing-sm: 16px;
            --spacing-md: 24px;
            --spacing-lg: 40px;
            --spacing-xl: 60px;
            --spacing-2xl: 80px;
            --spacing-3xl: 100px;
            --transition-fast: 0.2s ease;
            --transition-normal: 0.3s ease;
            --nav-height: 72px;
            --container-max: 1320px;
        }

        html {
            scroll-behavior: smooth;
            scroll-padding-top: var(--nav-height);
        }

        body {
            font-family: 'PingFang SC', 'Microsoft YaHei', 'Helvetica Neue', Arial, sans-serif;
            font-size: 16px;
            line-height: 1.8;
            color: var(--gray-800);
            background-color: var(--white);
            background-image: linear-gradient(180deg, #F8FAFD 0%, #FFFFFF 100%);
            background-attachment: fixed;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            overflow-x: hidden;
            padding-top: var(--nav-height);
        }

        a {
            color: var(--primary-dark);
            text-decoration: none;
            transition: color var(--transition-fast);
        }

        a:hover {
            color: var(--primary-deep);
            text-decoration: none;
        }

        a:focus-visible {
            outline: 2px solid var(--primary);
            outline-offset: 3px;
            border-radius: 4px;
        }

        img {
            max-width: 100%;
            height: auto;
            display: block;
        }

        button,
        input,
        select,
        textarea {
            font-family: inherit;
            font-size: inherit;
        }

        .container-custom {
            max-width: var(--container-max);
            margin: 0 auto;
            padding: 0 var(--spacing-md);
        }

        @media (max-width: 768px) {
            .container-custom {
                padding: 0 var(--spacing-sm);
            }
        }

        /* ========== NAVIGATION ========== */
        .site-nav {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1050;
            height: var(--nav-height);
            background: var(--white);
            border-bottom: 1px solid var(--gray-200);
            display: flex;
            align-items: center;
            transition: box-shadow var(--transition-normal);
        }

        .site-nav.scrolled {
            box-shadow: 0 2px 16px rgba(0, 0, 0, 0.06);
        }

        .nav-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            width: 100%;
            max-width: var(--container-max);
            margin: 0 auto;
            padding: 0 var(--spacing-md);
            height: 100%;
        }

        .nav-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 22px;
            font-weight: 700;
            color: var(--primary-dark);
            white-space: nowrap;
            flex-shrink: 0;
        }

        .nav-logo .logo-icon {
            width: 40px;
            height: 40px;
            background: var(--primary);
            border-radius: var(--radius-sm);
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-size: 18px;
            font-weight: 700;
            flex-shrink: 0;
        }

        .nav-logo:hover {
            color: var(--primary-deep);
        }

        .nav-chips {
            display: flex;
            align-items: center;
            gap: 6px;
            flex-wrap: nowrap;
            overflow-x: auto;
            scrollbar-width: none;
            -ms-overflow-style: none;
            padding: 0 4px;
        }

        .nav-chips::-webkit-scrollbar {
            display: none;
        }

        .nav-chip {
            display: inline-flex;
            align-items: center;
            padding: 8px 16px;
            border-radius: var(--radius-chip);
            font-size: 14px;
            font-weight: 500;
            color: var(--primary-dark);
            background: transparent;
            border: 1px solid var(--primary-soft);
            white-space: nowrap;
            transition: all var(--transition-fast);
            cursor: pointer;
            text-decoration: none;
            flex-shrink: 0;
        }

        .nav-chip:hover {
            background: var(--primary-bg);
            border-color: var(--primary);
            color: var(--primary-dark);
        }

        .nav-chip.active {
            background: var(--primary);
            border-color: var(--primary);
            color: #fff;
            font-weight: 600;
        }

        .nav-cta {
            display: inline-flex;
            align-items: center;
            padding: 10px 20px;
            border-radius: var(--radius-sm);
            font-size: 14px;
            font-weight: 600;
            background: var(--accent-orange);
            color: #fff;
            white-space: nowrap;
            flex-shrink: 0;
            transition: all var(--transition-fast);
            text-decoration: none;
            border: none;
            cursor: pointer;
        }

        .nav-cta:hover {
            background: var(--accent-orange-hover);
            color: #fff;
            transform: translateY(-1px);
            box-shadow: 0 4px 12px rgba(255, 111, 0, 0.3);
        }

        .nav-toggle {
            display: none;
            background: none;
            border: none;
            font-size: 24px;
            color: var(--gray-700);
            cursor: pointer;
            padding: 4px 8px;
            border-radius: 4px;
        }

        .nav-toggle:hover {
            background: var(--gray-100);
        }

        @media (max-width: 992px) {
            .nav-chips {
                display: none;
                position: absolute;
                top: var(--nav-height);
                left: 0;
                right: 0;
                background: var(--white);
                flex-direction: column;
                padding: var(--spacing-sm);
                border-bottom: 2px solid var(--gray-200);
                box-shadow: 0 8px 24px rgba(0, 0, 0, 0.08);
                z-index: 1049;
                gap: 4px;
            }

            .nav-chips.open {
                display: flex;
            }

            .nav-chip {
                width: 100%;
                justify-content: center;
                padding: 12px 16px;
                border-radius: var(--radius-sm);
                font-size: 15px;
                border: none;
                border-bottom: 1px solid var(--gray-150);
            }

            .nav-chip.active {
                border-radius: var(--radius-sm);
                border: none;
            }

            .nav-toggle {
                display: block;
            }

            .nav-cta {
                display: none;
            }

            .nav-cta-mobile {
                display: inline-flex !important;
                width: 100%;
                justify-content: center;
                margin-top: 8px;
                padding: 12px 20px;
                border-radius: var(--radius-sm);
                font-size: 15px;
                font-weight: 600;
                background: var(--accent-orange);
                color: #fff;
                text-decoration: none;
            }
        }

        @media (min-width: 993px) {
            .nav-cta-mobile {
                display: none !important;
            }
        }

        /* ========== BREADCRUMB ========== */
        .breadcrumb-section {
            background: var(--gray-50);
            padding: 14px 0;
            border-bottom: 1px solid var(--gray-150);
        }

        .breadcrumb-custom {
            display: flex;
            align-items: center;
            gap: 8px;
            list-style: none;
            padding: 0;
            margin: 0;
            font-size: 14px;
            color: var(--gray-500);
            flex-wrap: wrap;
        }

        .breadcrumb-custom li {
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .breadcrumb-custom li+li::before {
            content: '›';
            color: var(--gray-400);
            font-size: 16px;
            margin-right: 4px;
        }

        .breadcrumb-custom a {
            color: var(--gray-600);
            transition: color var(--transition-fast);
        }

        .breadcrumb-custom a:hover {
            color: var(--primary);
        }

        .breadcrumb-custom .current {
            color: var(--primary-dark);
            font-weight: 600;
        }

        /* ========== HERO VIDEO STYLE ========== */
        .hero-video-section {
            position: relative;
            width: 100%;
            min-height: 480px;
            background: url('/assets/images/backpic/back-1.webp') center/cover no-repeat;
            display: flex;
            align-items: center;
            justify-content: center;
            overflow: hidden;
        }

        .hero-video-overlay {
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(13, 110, 253, 0.75) 0%, rgba(10, 74, 158, 0.82) 40%, rgba(30, 41, 59, 0.88) 100%);
            z-index: 1;
        }

        .hero-video-content {
            position: relative;
            z-index: 2;
            text-align: center;
            color: #fff;
            padding: var(--spacing-xl) var(--spacing-md);
            max-width: 800px;
        }

        .hero-play-btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 80px;
            height: 80px;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.18);
            border: 3px solid rgba(255, 255, 255, 0.7);
            color: #fff;
            font-size: 32px;
            cursor: pointer;
            transition: all var(--transition-normal);
            margin-bottom: var(--spacing-md);
            animation: pulse-ring 2.5s ease-out infinite;
            position: relative;
        }

        .hero-play-btn:hover {
            background: rgba(255, 255, 255, 0.3);
            border-color: #fff;
            transform: scale(1.08);
            box-shadow: 0 0 40px rgba(255, 255, 255, 0.3);
        }

        @keyframes pulse-ring {
            0% {
                box-shadow: 0 0 0 0 rgba(255, 255, 255, 0.45);
            }
            70% {
                box-shadow: 0 0 0 30px rgba(255, 255, 255, 0);
            }
            100% {
                box-shadow: 0 0 0 0 rgba(255, 255, 255, 0);
            }
        }

        .hero-video-content h1 {
            font-size: 36px;
            font-weight: 700;
            margin-bottom: var(--spacing-sm);
            line-height: 1.3;
            text-shadow: 0 2px 8px rgba(0, 0, 0, 0.3);
        }

        .hero-video-content .hero-subtitle {
            font-size: 17px;
            font-weight: 400;
            opacity: 0.9;
            margin-bottom: var(--spacing-lg);
            line-height: 1.7;
            max-width: 600px;
            margin-left: auto;
            margin-right: auto;
        }

        .hero-video-cta {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 14px 32px;
            border-radius: var(--radius-sm);
            font-size: 16px;
            font-weight: 600;
            background: var(--accent-orange);
            color: #fff;
            border: none;
            cursor: pointer;
            transition: all var(--transition-fast);
            text-decoration: none;
        }

        .hero-video-cta:hover {
            background: var(--accent-orange-hover);
            color: #fff;
            transform: translateY(-2px);
            box-shadow: 0 6px 20px rgba(255, 111, 0, 0.4);
        }

        @media (max-width: 768px) {
            .hero-video-section {
                min-height: 380px;
            }
            .hero-video-content h1 {
                font-size: 26px;
            }
            .hero-play-btn {
                width: 60px;
                height: 60px;
                font-size: 24px;
            }
            .hero-video-content .hero-subtitle {
                font-size: 15px;
            }
        }

        /* ========== SECTION COMMON ========== */
        .section-padding {
            padding: var(--spacing-2xl) 0;
        }

        .section-padding-lg {
            padding: var(--spacing-3xl) 0;
        }

        .section-title {
            font-size: 28px;
            font-weight: 700;
            color: var(--gray-800);
            margin-bottom: var(--spacing-xs);
            line-height: 1.3;
        }

        .section-subtitle {
            font-size: 16px;
            color: var(--gray-500);
            margin-bottom: var(--spacing-lg);
            line-height: 1.7;
        }

        .section-header {
            margin-bottom: var(--spacing-lg);
        }

        @media (max-width: 768px) {
            .section-title {
                font-size: 22px;
            }
            .section-padding {
                padding: var(--spacing-xl) 0;
            }
            .section-padding-lg {
                padding: var(--spacing-2xl) 0;
            }
        }

        /* ========== METRICS CARDS ========== */
        .metrics-row {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: var(--spacing-md);
        }

        .metric-card {
            background: var(--white);
            border-radius: var(--radius-md);
            padding: var(--spacing-md);
            box-shadow: var(--card-shadow);
            text-align: center;
            transition: all var(--transition-fast);
            border: 1px solid var(--gray-150);
        }

        .metric-card:hover {
            box-shadow: var(--card-shadow-hover);
            transform: translateY(-2px);
        }

        .metric-value {
            font-size: 42px;
            font-weight: 700;
            color: var(--primary-dark);
            line-height: 1.1;
            margin-bottom: 4px;
        }

        .metric-value .unit {
            font-size: 18px;
            font-weight: 500;
            color: var(--gray-500);
        }

        .metric-label {
            font-size: 14px;
            color: var(--gray-500);
            font-weight: 500;
        }

        .metric-trend {
            display: inline-flex;
            align-items: center;
            gap: 4px;
            font-size: 13px;
            font-weight: 600;
            margin-top: 4px;
        }

        .metric-trend.up {
            color: #10B981;
        }

        .metric-trend.down {
            color: #EF4444;
        }

        @media (max-width: 992px) {
            .metrics-row {
                grid-template-columns: repeat(2, 1fr);
            }
        }

        @media (max-width: 520px) {
            .metrics-row {
                grid-template-columns: 1fr 1fr;
            }
            .metric-value {
                font-size: 30px;
            }
        }

        /* ========== SERVICE CARDS ========== */
        .service-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: var(--spacing-md);
        }

        .service-card {
            background: var(--white);
            border-radius: var(--radius-md);
            padding: var(--spacing-lg) var(--spacing-md);
            box-shadow: var(--card-shadow);
            border: 1px solid var(--gray-150);
            transition: all var(--transition-fast);
            display: flex;
            flex-direction: column;
            gap: var(--spacing-sm);
        }

        .service-card:hover {
            box-shadow: var(--card-shadow-hover);
            transform: translateY(-3px);
            border-color: var(--primary-soft);
        }

        .service-card .service-icon {
            width: 52px;
            height: 52px;
            border-radius: var(--radius-sm);
            background: var(--primary-bg);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 22px;
            color: var(--primary);
            flex-shrink: 0;
        }

        .service-card h3 {
            font-size: 18px;
            font-weight: 600;
            color: var(--gray-800);
            margin: 0;
            line-height: 1.4;
        }

        .service-card p {
            font-size: 14px;
            color: var(--gray-500);
            margin: 0;
            line-height: 1.7;
            flex-grow: 1;
        }

        .service-card .service-link {
            font-size: 14px;
            font-weight: 600;
            color: var(--primary-dark);
            display: inline-flex;
            align-items: center;
            gap: 4px;
            transition: gap var(--transition-fast);
        }

        .service-card .service-link:hover {
            gap: 8px;
            color: var(--primary-deep);
        }

        @media (max-width: 992px) {
            .service-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }

        @media (max-width: 768px) {
            .service-grid {
                grid-template-columns: 1fr;
            }
        }

        /* ========== PROCESS STEPS ========== */
        .process-steps {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: var(--spacing-md);
            position: relative;
        }

        .process-step {
            text-align: center;
            position: relative;
            padding: var(--spacing-md);
        }

        .process-step-num {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 48px;
            height: 48px;
            border-radius: 50%;
            background: var(--primary);
            color: #fff;
            font-size: 20px;
            font-weight: 700;
            margin-bottom: var(--spacing-sm);
            position: relative;
            z-index: 2;
        }

        .process-step h4 {
            font-size: 16px;
            font-weight: 600;
            color: var(--gray-800);
            margin-bottom: 4px;
        }

        .process-step p {
            font-size: 13px;
            color: var(--gray-500);
            line-height: 1.6;
            margin: 0;
        }

        .process-steps::before {
            content: '';
            position: absolute;
            top: 40px;
            left: 12%;
            right: 12%;
            height: 2px;
            background: var(--gray-200);
            z-index: 1;
        }

        @media (max-width: 768px) {
            .process-steps {
                grid-template-columns: 1fr 1fr;
            }
            .process-steps::before {
                display: none;
            }
        }

        @media (max-width: 520px) {
            .process-steps {
                grid-template-columns: 1fr;
            }
        }

        /* ========== ARTICLE LIST ========== */
        .content-layout {
            display: grid;
            grid-template-columns: 1fr 320px;
            gap: var(--spacing-lg);
            align-items: start;
        }

        .article-list {
            display: flex;
            flex-direction: column;
            gap: var(--spacing-md);
        }

        .article-card {
            background: var(--white);
            border-radius: var(--radius-md);
            padding: var(--spacing-md);
            box-shadow: var(--card-shadow);
            border: 1px solid var(--gray-150);
            transition: all var(--transition-fast);
            cursor: pointer;
            display: flex;
            gap: var(--spacing-md);
            align-items: flex-start;
        }

        .article-card:hover {
            box-shadow: var(--card-shadow-hover);
            border-color: var(--primary-soft);
            transform: translateY(-1px);
        }

        .article-card .article-date {
            flex-shrink: 0;
            width: 60px;
            text-align: center;
            background: var(--primary-bg);
            border-radius: var(--radius-sm);
            padding: 10px 8px;
            font-weight: 700;
            color: var(--primary-dark);
            font-size: 14px;
            line-height: 1.2;
        }

        .article-card .article-date .day {
            font-size: 22px;
            display: block;
        }

        .article-card .article-body {
            flex: 1;
            min-width: 0;
        }

        .article-card .article-body h3 {
            font-size: 17px;
            font-weight: 600;
            color: var(--gray-800);
            margin-bottom: 6px;
            line-height: 1.4;
        }

        .article-card .article-body p {
            font-size: 14px;
            color: var(--gray-500);
            line-height: 1.7;
            margin-bottom: 8px;
            display: -webkit-box;
            -webkit-line-clamp: 3;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }

        .article-card .read-more {
            font-size: 13px;
            font-weight: 600;
            color: var(--primary-dark);
            display: inline-flex;
            align-items: center;
            gap: 4px;
            transition: gap var(--transition-fast);
        }

        .article-card .read-more:hover {
            gap: 8px;
            color: var(--primary-deep);
        }

        /* ========== SIDEBAR ========== */
        .sidebar {
            display: flex;
            flex-direction: column;
            gap: var(--spacing-md);
            position: sticky;
            top: calc(var(--nav-height) + 20px);
        }

        .sidebar-widget {
            background: var(--white);
            border-radius: var(--radius-md);
            padding: var(--spacing-md);
            box-shadow: var(--card-shadow);
            border: 1px solid var(--gray-150);
        }

        .sidebar-widget h4 {
            font-size: 17px;
            font-weight: 600;
            color: var(--gray-800);
            margin-bottom: var(--spacing-sm);
            padding-bottom: var(--spacing-xs);
            border-bottom: 2px solid var(--primary-soft);
        }

        .tag-cloud {
            display: flex;
            flex-wrap: wrap;
            gap: 8px;
        }

        .tag-chip {
            display: inline-block;
            padding: 6px 14px;
            border-radius: var(--radius-chip);
            font-size: 13px;
            font-weight: 500;
            background: var(--gray-100);
            color: var(--gray-600);
            transition: all var(--transition-fast);
            text-decoration: none;
            border: 1px solid transparent;
        }

        .tag-chip:hover {
            background: var(--primary-bg);
            color: var(--primary-dark);
            border-color: var(--primary-soft);
        }

        .tag-chip.hot {
            background: var(--accent-orange-light);
            color: var(--accent-orange);
            font-weight: 600;
        }

        .hot-article-item {
            display: flex;
            align-items: flex-start;
            gap: 10px;
            padding: 10px 0;
            border-bottom: 1px solid var(--gray-150);
            transition: all var(--transition-fast);
        }

        .hot-article-item:last-child {
            border-bottom: none;
        }

        .hot-article-item:hover {
            padding-left: 6px;
        }

        .hot-article-item .hot-rank {
            flex-shrink: 0;
            width: 26px;
            height: 26px;
            border-radius: 50%;
            background: var(--primary);
            color: #fff;
            font-size: 12px;
            font-weight: 700;
            display: flex;
            align-items: center;
            justify-content: center;
        }

        .hot-article-item .hot-rank.r2 {
            background: var(--primary-light);
        }
        .hot-article-item .hot-rank.r3 {
            background: var(--gray-400);
        }
        .hot-article-item .hot-rank.r4 {
            background: var(--gray-400);
        }
        .hot-article-item .hot-rank.r5 {
            background: var(--gray-400);
        }

        .hot-article-item .hot-info {
            flex: 1;
            min-width: 0;
        }

        .hot-article-item .hot-info a {
            font-size: 14px;
            font-weight: 500;
            color: var(--gray-700);
            line-height: 1.4;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }

        .hot-article-item .hot-info a:hover {
            color: var(--primary-dark);
        }

        @media (max-width: 992px) {
            .content-layout {
                grid-template-columns: 1fr;
            }
            .sidebar {
                position: static;
                flex-direction: row;
                flex-wrap: wrap;
            }
            .sidebar-widget {
                flex: 1;
                min-width: 260px;
            }
        }

        @media (max-width: 520px) {
            .sidebar {
                flex-direction: column;
            }
            .sidebar-widget {
                flex: auto;
            }
        }

        /* ========== PAGINATION ========== */
        .pagination-custom {
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 6px;
            padding-top: var(--spacing-md);
        }

        .pagination-custom .page-btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 40px;
            height: 40px;
            border-radius: var(--radius-sm);
            font-size: 14px;
            font-weight: 500;
            background: var(--white);
            border: 1px solid var(--gray-200);
            color: var(--gray-600);
            cursor: pointer;
            transition: all var(--transition-fast);
            text-decoration: none;
        }

        .pagination-custom .page-btn:hover {
            background: var(--primary-bg);
            border-color: var(--primary-soft);
            color: var(--primary-dark);
        }

        .pagination-custom .page-btn.active {
            background: var(--primary);
            border-color: var(--primary);
            color: #fff;
            font-weight: 600;
        }

        .pagination-custom .page-btn.disabled {
            opacity: 0.4;
            pointer-events: none;
        }

        /* ========== COMPARISON TABLE ========== */
        .comparison-table-wrap {
            overflow-x: auto;
            -webkit-overflow-scrolling: touch;
        }

        .comparison-table {
            width: 100%;
            border-collapse: separate;
            border-spacing: 0;
            border-radius: var(--radius-md);
            overflow: hidden;
            box-shadow: var(--card-shadow);
            border: 1px solid var(--gray-200);
        }

        .comparison-table thead th {
            background: var(--primary);
            color: #fff;
            padding: 14px 16px;
            font-size: 15px;
            font-weight: 600;
            text-align: left;
            white-space: nowrap;
        }

        .comparison-table tbody td {
            padding: 12px 16px;
            font-size: 14px;
            color: var(--gray-700);
            border-bottom: 1px solid var(--gray-150);
            background: var(--white);
        }

        .comparison-table tbody tr:nth-child(even) td {
            background: var(--gray-50);
        }

        .comparison-table tbody tr:hover td {
            background: var(--primary-bg);
        }

        .comparison-table .highlight-cell {
            font-weight: 600;
            color: var(--primary-dark);
            background: var(--primary-bg) !important;
        }

        @media (max-width: 768px) {
            .comparison-table thead th,
            .comparison-table tbody td {
                padding: 10px 12px;
                font-size: 13px;
            }
        }

        /* ========== FAQ ========== */
        .faq-list {
            display: flex;
            flex-direction: column;
            gap: var(--spacing-sm);
        }

        .faq-item {
            background: var(--white);
            border-radius: var(--radius-md);
            border: 1px solid var(--gray-200);
            overflow: hidden;
            transition: all var(--transition-fast);
            box-shadow: var(--card-shadow);
        }

        .faq-item:hover {
            border-color: var(--primary-soft);
        }

        .faq-question {
            width: 100%;
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 16px 20px;
            background: none;
            border: none;
            cursor: pointer;
            font-size: 16px;
            font-weight: 600;
            color: var(--gray-800);
            text-align: left;
            gap: 12px;
            transition: background var(--transition-fast);
        }

        .faq-question:hover {
            background: var(--gray-50);
        }

        .faq-icon {
            flex-shrink: 0;
            width: 28px;
            height: 28px;
            border-radius: 50%;
            background: var(--primary-bg);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 14px;
            color: var(--primary);
            transition: all var(--transition-fast);
        }

        .faq-item.open .faq-icon {
            background: var(--primary);
            color: #fff;
            transform: rotate(45deg);
        }

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height var(--transition-normal), padding var(--transition-normal);
            padding: 0 20px;
            font-size: 15px;
            color: var(--gray-600);
            line-height: 1.8;
        }

        .faq-item.open .faq-answer {
            max-height: 400px;
            padding: 0 20px 16px;
        }

        /* ========== CTA FORM ========== */
        .cta-form-section {
            background: var(--primary-bg);
            border-radius: var(--radius-lg);
            padding: var(--spacing-xl) var(--spacing-lg);
            border: 1px solid var(--primary-soft);
        }

        .cta-form-inner {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: var(--spacing-lg);
            align-items: center;
        }

        .cta-form-info h2 {
            font-size: 26px;
            font-weight: 700;
            color: var(--gray-800);
            margin-bottom: var(--spacing-xs);
        }

        .cta-form-info p {
            font-size: 15px;
            color: var(--gray-500);
            line-height: 1.7;
            margin: 0;
        }

        .cta-form-fields {
            display: flex;
            flex-direction: column;
            gap: var(--spacing-sm);
        }

        .cta-form-row {
            display: flex;
            gap: var(--spacing-sm);
        }

        .cta-form-fields input {
            flex: 1;
            padding: 12px 16px;
            border-radius: var(--radius-sm);
            border: 1px solid var(--gray-300);
            font-size: 15px;
            background: var(--white);
            transition: border-color var(--transition-fast);
            min-width: 0;
        }

        .cta-form-fields input:focus {
            outline: none;
            border-color: var(--primary);
            box-shadow: 0 0 0 3px rgba(13, 110, 253, 0.1);
        }

        .cta-submit-btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            padding: 13px 28px;
            border-radius: var(--radius-sm);
            font-size: 16px;
            font-weight: 600;
            background: var(--accent-orange);
            color: #fff;
            border: none;
            cursor: pointer;
            transition: all var(--transition-fast);
            white-space: nowrap;
        }

        .cta-submit-btn:hover {
            background: var(--accent-orange-hover);
            transform: translateY(-2px);
            box-shadow: 0 6px 20px rgba(255, 111, 0, 0.35);
        }

        @media (max-width: 768px) {
            .cta-form-inner {
                grid-template-columns: 1fr;
            }
            .cta-form-row {
                flex-direction: column;
            }
            .cta-form-section {
                padding: var(--spacing-lg) var(--spacing-md);
            }
        }

        /* ========== FOOTER ========== */
        .site-footer {
            background: var(--footer-bg);
            color: var(--footer-text);
            padding: var(--spacing-2xl) 0 0;
            margin-top: var(--spacing-2xl);
        }

        .footer-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: var(--spacing-lg);
            padding-bottom: var(--spacing-lg);
        }

        .footer-col h4 {
            font-size: 17px;
            font-weight: 600;
            color: #fff;
            margin-bottom: var(--spacing-sm);
        }

        .footer-col p {
            font-size: 14px;
            line-height: 1.7;
            margin: 0;
            color: var(--footer-text);
        }

        .footer-col ul {
            list-style: none;
            padding: 0;
            margin: 0;
        }

        .footer-col ul li {
            margin-bottom: 8px;
        }

        .footer-col ul li a {
            color: var(--footer-text);
            font-size: 14px;
            transition: color var(--transition-fast);
        }

        .footer-col ul li a:hover {
            color: #fff;
        }

        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            padding: var(--spacing-md) 0;
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            justify-content: center;
            gap: 6px;
            font-size: 13px;
            color: var(--footer-text);
        }

        .footer-bottom .divider {
            color: rgba(255, 255, 255, 0.2);
        }

        .footer-bottom a {
            color: var(--footer-text);
            font-size: 13px;
        }

        .footer-bottom a:hover {
            color: #fff;
        }

        @media (max-width: 768px) {
            .footer-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }

        @media (max-width: 520px) {
            .footer-grid {
                grid-template-columns: 1fr;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
                gap: 4px;
            }
            .footer-bottom .divider {
                display: none;
            }
        }

        /* ========== MISC ========== */
        .bg-light-gray {
            background: var(--gray-100);
        }

        .bg-white {
            background: var(--white);
        }

        .text-center {
            text-align: center;
        }

        .mb-0 {
            margin-bottom: 0;
        }

/* roulang page: category5 */
:root {
            --primary: #0D6EFD;
            --primary-light: #3B8BFF;
            --primary-bg: #EBF3FA;
            --primary-soft: #D6E8FB;
            --primary-dark: #1565C0;
            --primary-deep: #0A4A9E;
            --accent-orange: #FF6F00;
            --accent-orange-hover: #E56500;
            --accent-orange-light: #FFF3E6;
            --gray-50: #F8F9FA;
            --gray-100: #F5F7FA;
            --gray-150: #EEF1F5;
            --gray-200: #E9ECEF;
            --gray-300: #DEE2E6;
            --gray-400: #ADB5BD;
            --gray-500: #6C757D;
            --gray-600: #495057;
            --gray-700: #343A40;
            --gray-800: #212529;
            --gray-900: #1A1D21;
            --footer-bg: #1E293B;
            --footer-text: #B0B8C4;
            --white: #FFFFFF;
            --card-shadow: 0 4px 12px rgba(0, 0, 0, 0.04);
            --card-shadow-hover: 0 8px 24px rgba(0, 0, 0, 0.08);
            --card-shadow-lg: 0 12px 32px rgba(0, 0, 0, 0.06);
            --radius-sm: 8px;
            --radius-md: 12px;
            --radius-lg: 16px;
            --radius-xl: 20px;
            --radius-chip: 20px;
            --spacing-xs: 8px;
            --spacing-sm: 16px;
            --spacing-md: 24px;
            --spacing-lg: 40px;
            --spacing-xl: 60px;
            --spacing-2xl: 80px;
            --spacing-3xl: 100px;
            --transition-fast: 0.2s ease;
            --transition-normal: 0.3s ease;
            --nav-height: 72px;
            --container-max: 1320px;
        }

        html {
            scroll-behavior: smooth;
            scroll-padding-top: var(--nav-height);
        }

        body {
            font-family: 'PingFang SC', 'Microsoft YaHei', 'Helvetica Neue', Arial, sans-serif;
            font-size: 16px;
            line-height: 1.8;
            color: var(--gray-800);
            background-color: var(--white);
            background-image: linear-gradient(180deg, #F8FAFD 0%, #FFFFFF 100%);
            background-attachment: fixed;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            overflow-x: hidden;
            padding-top: var(--nav-height);
        }

        a {
            color: var(--primary-dark);
            text-decoration: none;
            transition: color var(--transition-fast);
        }

        a:hover {
            color: var(--primary-deep);
            text-decoration: none;
        }

        a:focus-visible {
            outline: 2px solid var(--primary);
            outline-offset: 3px;
            border-radius: 4px;
        }

        img {
            max-width: 100%;
            height: auto;
            display: block;
        }

        button,
        input,
        select,
        textarea {
            font-family: inherit;
            font-size: inherit;
        }

        .container-custom {
            max-width: var(--container-max);
            margin: 0 auto;
            padding: 0 var(--spacing-md);
        }

        @media (max-width: 768px) {
            .container-custom {
                padding: 0 var(--spacing-sm);
            }
        }

        /* ========== NAVIGATION ========== */
        .site-nav {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1050;
            height: var(--nav-height);
            background: var(--white);
            border-bottom: 1px solid var(--gray-200);
            display: flex;
            align-items: center;
            transition: box-shadow var(--transition-normal);
        }

        .site-nav.scrolled {
            box-shadow: 0 2px 16px rgba(0, 0, 0, 0.06);
        }

        .nav-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            width: 100%;
            max-width: var(--container-max);
            margin: 0 auto;
            padding: 0 var(--spacing-md);
            height: 100%;
        }

        .nav-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 22px;
            font-weight: 700;
            color: var(--primary-dark);
            white-space: nowrap;
            flex-shrink: 0;
        }

        .nav-logo .logo-icon {
            width: 40px;
            height: 40px;
            background: var(--primary);
            border-radius: var(--radius-sm);
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-size: 18px;
            font-weight: 700;
            flex-shrink: 0;
        }

        .nav-logo:hover {
            color: var(--primary-deep);
        }

        .nav-chips {
            display: flex;
            align-items: center;
            gap: 6px;
            flex-wrap: nowrap;
            overflow-x: auto;
            scrollbar-width: none;
            -ms-overflow-style: none;
            padding: 0 4px;
        }

        .nav-chips::-webkit-scrollbar {
            display: none;
        }

        .nav-chip {
            display: inline-flex;
            align-items: center;
            padding: 8px 16px;
            border-radius: var(--radius-chip);
            font-size: 14px;
            font-weight: 500;
            color: var(--primary-dark);
            background: transparent;
            border: 1px solid var(--primary-soft);
            white-space: nowrap;
            transition: all var(--transition-fast);
            cursor: pointer;
            text-decoration: none;
            flex-shrink: 0;
        }

        .nav-chip:hover {
            background: var(--primary-bg);
            border-color: var(--primary-light);
            color: var(--primary-deep);
        }

        .nav-chip.active {
            background: var(--primary);
            border-color: var(--primary);
            color: #fff;
            font-weight: 600;
        }

        .nav-cta {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 10px 20px;
            background: var(--accent-orange);
            color: #fff;
            border-radius: var(--radius-sm);
            font-size: 14px;
            font-weight: 600;
            white-space: nowrap;
            flex-shrink: 0;
            transition: all var(--transition-fast);
            border: none;
            cursor: pointer;
            text-decoration: none;
        }

        .nav-cta:hover {
            background: var(--accent-orange-hover);
            color: #fff;
            transform: translateY(-1px);
            box-shadow: 0 4px 12px rgba(255, 111, 0, 0.3);
        }

        .nav-toggle {
            display: none;
            background: none;
            border: none;
            font-size: 24px;
            color: var(--gray-700);
            cursor: pointer;
            padding: 4px 8px;
            border-radius: 4px;
        }

        @media (max-width: 992px) {
            .nav-chips {
                display: none;
                position: absolute;
                top: var(--nav-height);
                left: 0;
                right: 0;
                background: #fff;
                flex-direction: column;
                padding: 12px 16px;
                border-bottom: 1px solid var(--gray-200);
                box-shadow: 0 8px 24px rgba(0, 0, 0, 0.08);
                gap: 4px;
                z-index: 1049;
            }

            .nav-chips.open {
                display: flex;
            }

            .nav-chip {
                width: 100%;
                justify-content: center;
                padding: 12px 16px;
                border-radius: var(--radius-sm);
                font-size: 15px;
            }

            .nav-toggle {
                display: block;
            }

            .nav-cta {
                padding: 8px 14px;
                font-size: 13px;
            }
        }

        @media (max-width: 576px) {
            .nav-logo {
                font-size: 18px;
                gap: 6px;
            }

            .nav-logo .logo-icon {
                width: 32px;
                height: 32px;
                font-size: 14px;
            }

            .nav-cta {
                padding: 6px 12px;
                font-size: 12px;
            }
        }

        /* ========== BREADCRUMB ========== */
        .breadcrumb-section {
            background: var(--gray-100);
            padding: 14px 0;
            border-bottom: 1px solid var(--gray-200);
        }

        .breadcrumb-custom {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 14px;
            color: var(--gray-500);
            list-style: none;
            margin: 0;
            padding: 0;
            flex-wrap: wrap;
        }

        .breadcrumb-custom a {
            color: var(--primary-dark);
        }

        .breadcrumb-custom a:hover {
            color: var(--primary-deep);
        }

        .breadcrumb-custom .separator {
            color: var(--gray-400);
        }

        .breadcrumb-custom .current {
            color: var(--gray-700);
            font-weight: 500;
        }

        /* ========== HERO ========== */
        .hero-section {
            padding: var(--spacing-xl) 0;
            background: var(--white);
            position: relative;
        }

        .hero-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 48px;
            align-items: center;
        }

        .hero-content h1 {
            font-size: 32px;
            font-weight: 700;
            color: var(--gray-900);
            margin-bottom: 16px;
            line-height: 1.3;
        }

        .hero-content .hero-subtitle {
            font-size: 17px;
            color: var(--gray-600);
            margin-bottom: 24px;
            line-height: 1.7;
        }

        .hero-features {
            list-style: none;
            padding: 0;
            margin: 0 0 28px 0;
        }

        .hero-features li {
            display: flex;
            align-items: flex-start;
            gap: 10px;
            margin-bottom: 12px;
            font-size: 15px;
            color: var(--gray-700);
            line-height: 1.5;
        }

        .hero-features li i {
            color: var(--primary);
            font-size: 18px;
            margin-top: 2px;
            flex-shrink: 0;
        }

        .hero-panel {
            background: #fff;
            border-radius: var(--radius-lg);
            padding: 32px;
            box-shadow: var(--card-shadow-lg);
            border: 1px solid var(--gray-200);
        }

        .hero-panel h3 {
            font-size: 20px;
            font-weight: 700;
            color: var(--gray-800);
            margin-bottom: 20px;
            text-align: center;
        }

        .tool-select-group {
            margin-bottom: 16px;
        }

        .tool-select-group label {
            display: block;
            font-size: 14px;
            font-weight: 600;
            color: var(--gray-700);
            margin-bottom: 6px;
        }

        .tool-select-group select,
        .tool-select-group input {
            width: 100%;
            padding: 10px 14px;
            border: 1px solid var(--gray-300);
            border-radius: var(--radius-sm);
            font-size: 15px;
            color: var(--gray-800);
            background: var(--gray-50);
            transition: border-color var(--transition-fast);
        }

        .tool-select-group select:focus,
        .tool-select-group input:focus {
            border-color: var(--primary);
            outline: none;
            box-shadow: 0 0 0 3px rgba(13, 110, 253, 0.1);
        }

        .time-slots {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 8px;
            margin-bottom: 20px;
        }

        .time-slot {
            padding: 10px 8px;
            text-align: center;
            border: 1px solid var(--gray-300);
            border-radius: var(--radius-sm);
            cursor: pointer;
            font-size: 13px;
            font-weight: 500;
            color: var(--gray-700);
            transition: all var(--transition-fast);
            background: #fff;
        }

        .time-slot:hover {
            border-color: var(--primary-light);
            background: var(--primary-bg);
        }

        .time-slot.selected {
            background: var(--primary);
            color: #fff;
            border-color: var(--primary);
            font-weight: 600;
        }

        .btn-hero-cta {
            width: 100%;
            padding: 14px 24px;
            background: var(--accent-orange);
            color: #fff;
            border: none;
            border-radius: var(--radius-sm);
            font-size: 16px;
            font-weight: 600;
            cursor: pointer;
            transition: all var(--transition-fast);
            text-align: center;
            display: block;
            text-decoration: none;
        }

        .btn-hero-cta:hover {
            background: var(--accent-orange-hover);
            color: #fff;
            transform: translateY(-2px);
            box-shadow: 0 6px 20px rgba(255, 111, 0, 0.35);
        }

        @media (max-width: 768px) {
            .hero-grid {
                grid-template-columns: 1fr;
                gap: 32px;
            }

            .hero-content h1 {
                font-size: 26px;
            }

            .time-slots {
                grid-template-columns: repeat(2, 1fr);
            }
        }

        /* ========== METRICS BAR ========== */
        .metrics-bar {
            background: var(--primary-bg);
            padding: 28px 0;
            border-top: 1px solid var(--primary-soft);
            border-bottom: 1px solid var(--primary-soft);
        }

        .metrics-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
        }

        .metric-card {
            background: #fff;
            border-radius: var(--radius-md);
            padding: 20px 24px;
            text-align: center;
            box-shadow: var(--card-shadow);
            transition: all var(--transition-fast);
        }

        .metric-card:hover {
            box-shadow: var(--card-shadow-hover);
            transform: translateY(-2px);
        }

        .metric-number {
            font-size: 36px;
            font-weight: 700;
            color: var(--primary-dark);
            line-height: 1.2;
        }

        .metric-label {
            font-size: 13px;
            color: var(--gray-500);
            margin-top: 4px;
        }

        .metric-trend {
            display: inline-flex;
            align-items: center;
            gap: 4px;
            font-size: 12px;
            font-weight: 600;
            margin-top: 6px;
        }

        .metric-trend.up {
            color: #10B981;
        }

        .metric-trend.down {
            color: #EF4444;
        }

        @media (max-width: 992px) {
            .metrics-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }

        @media (max-width: 576px) {
            .metrics-grid {
                grid-template-columns: 1fr;
            }

            .metric-number {
                font-size: 28px;
            }
        }

        /* ========== TOOLS MATRIX ========== */
        .tools-matrix-section {
            padding: var(--spacing-2xl) 0;
            background: var(--white);
        }

        .section-header {
            text-align: center;
            margin-bottom: 48px;
        }

        .section-header h2 {
            font-size: 28px;
            font-weight: 700;
            color: var(--gray-900);
            margin-bottom: 12px;
        }

        .section-header .section-desc {
            font-size: 16px;
            color: var(--gray-500);
            max-width: 700px;
            margin: 0 auto;
            line-height: 1.7;
        }

        .tools-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }

        .tool-card {
            background: #fff;
            border-radius: var(--radius-md);
            padding: 28px;
            border: 1px solid var(--gray-200);
            box-shadow: var(--card-shadow);
            transition: all var(--transition-normal);
            display: flex;
            flex-direction: column;
            height: 100%;
        }

        .tool-card:hover {
            box-shadow: var(--card-shadow-hover);
            transform: translateY(-3px);
            border-color: var(--primary-soft);
        }

        .tool-card .tool-icon {
            width: 56px;
            height: 56px;
            border-radius: var(--radius-md);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 24px;
            margin-bottom: 16px;
            flex-shrink: 0;
        }

        .tool-icon.blue {
            background: var(--primary-bg);
            color: var(--primary);
        }

        .tool-icon.orange {
            background: var(--accent-orange-light);
            color: var(--accent-orange);
        }

        .tool-icon.green {
            background: #E6FAF0;
            color: #10B981;
        }

        .tool-icon.purple {
            background: #F3E8FF;
            color: #8B5CF6;
        }

        .tool-icon.teal {
            background: #E6F7F7;
            color: #14B8A6;
        }

        .tool-icon.rose {
            background: #FFE4E6;
            color: #F43F5E;
        }

        .tool-card h3 {
            font-size: 18px;
            font-weight: 700;
            color: var(--gray-800);
            margin-bottom: 8px;
        }

        .tool-card p {
            font-size: 14px;
            color: var(--gray-500);
            line-height: 1.7;
            flex-grow: 1;
            margin-bottom: 16px;
        }

        .tool-card .tool-link {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-size: 14px;
            font-weight: 600;
            color: var(--primary-dark);
            transition: all var(--transition-fast);
            text-decoration: none;
        }

        .tool-card .tool-link:hover {
            color: var(--primary-deep);
            gap: 10px;
        }

        @media (max-width: 992px) {
            .tools-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }

        @media (max-width: 576px) {
            .tools-grid {
                grid-template-columns: 1fr;
            }

            .section-header h2 {
                font-size: 24px;
            }
        }

        /* ========== COMPARISON TABLE ========== */
        .comparison-section {
            padding: var(--spacing-2xl) 0;
            background: var(--gray-100);
        }

        .comparison-table-wrap {
            overflow-x: auto;
            -webkit-overflow-scrolling: touch;
        }

        .comparison-table {
            width: 100%;
            border-collapse: separate;
            border-spacing: 0;
            background: #fff;
            border-radius: var(--radius-md);
            overflow: hidden;
            box-shadow: var(--card-shadow);
            min-width: 700px;
        }

        .comparison-table thead th {
            background: var(--primary);
            color: #fff;
            padding: 16px 20px;
            font-size: 15px;
            font-weight: 600;
            text-align: center;
            border: none;
        }

        .comparison-table thead th:first-child {
            text-align: left;
            border-radius: var(--radius-md) 0 0 0;
        }

        .comparison-table thead th:last-child {
            border-radius: 0 var(--radius-md) 0 0;
        }

        .comparison-table tbody td {
            padding: 14px 20px;
            font-size: 14px;
            color: var(--gray-700);
            text-align: center;
            border-bottom: 1px solid var(--gray-150);
            vertical-align: middle;
        }

        .comparison-table tbody td:first-child {
            text-align: left;
            font-weight: 600;
            color: var(--gray-800);
        }

        .comparison-table tbody tr:nth-child(even) td {
            background: var(--gray-50);
        }

        .comparison-table tbody tr:hover td {
            background: var(--primary-bg);
        }

        .comparison-table .highlight-col {
            background: #FFFBE6 !important;
            font-weight: 600;
            color: var(--primary-dark);
        }

        .check-icon {
            color: #10B981;
            font-size: 16px;
        }

        .cross-icon {
            color: #EF4444;
            font-size: 16px;
        }

        .star-icon {
            color: #F59E0B;
            font-size: 16px;
        }

        @media (max-width: 768px) {
            .comparison-table thead th,
            .comparison-table tbody td {
                padding: 10px 12px;
                font-size: 13px;
            }
        }

        /* ========== FEATURE DEEP DIVE ========== */
        .deep-dive-section {
            padding: var(--spacing-2xl) 0;
            background: var(--white);
        }

        .deep-dive-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 48px;
            align-items: center;
        }

        .deep-dive-image {
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--card-shadow-lg);
            height: 380px;
        }

        .deep-dive-image img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }

        .deep-dive-content h2 {
            font-size: 26px;
            font-weight: 700;
            color: var(--gray-900);
            margin-bottom: 16px;
            line-height: 1.3;
        }

        .deep-dive-content p {
            font-size: 15px;
            color: var(--gray-600);
            line-height: 1.8;
            margin-bottom: 20px;
        }

        .deep-dive-list {
            list-style: none;
            padding: 0;
            margin: 0 0 24px 0;
        }

        .deep-dive-list li {
            display: flex;
            align-items: flex-start;
            gap: 10px;
            margin-bottom: 10px;
            font-size: 14px;
            color: var(--gray-700);
            line-height: 1.6;
        }

        .deep-dive-list li i {
            color: var(--primary);
            font-size: 16px;
            margin-top: 3px;
            flex-shrink: 0;
        }

        @media (max-width: 768px) {
            .deep-dive-grid {
                grid-template-columns: 1fr;
                gap: 28px;
            }

            .deep-dive-image {
                height: 280px;
            }

            .deep-dive-content h2 {
                font-size: 22px;
            }
        }

        /* ========== PROCESS STEPS ========== */
        .process-section {
            padding: var(--spacing-2xl) 0;
            background: var(--gray-100);
        }

        .process-steps {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
            position: relative;
        }

        .process-step {
            text-align: center;
            position: relative;
            z-index: 1;
        }

        .step-number {
            width: 56px;
            height: 56px;
            border-radius: 50%;
            background: var(--primary);
            color: #fff;
            font-size: 22px;
            font-weight: 700;
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 16px;
            box-shadow: 0 4px 12px rgba(13, 110, 253, 0.25);
        }

        .process-step h4 {
            font-size: 16px;
            font-weight: 700;
            color: var(--gray-800);
            margin-bottom: 6px;
        }

        .process-step p {
            font-size: 13px;
            color: var(--gray-500);
            line-height: 1.6;
        }

        .process-connector {
            position: absolute;
            top: 28px;
            left: 0;
            right: 0;
            height: 2px;
            background: var(--primary-soft);
            z-index: 0;
        }

        @media (max-width: 992px) {
            .process-steps {
                grid-template-columns: repeat(2, 1fr);
                gap: 28px;
            }

            .process-connector {
                display: none;
            }
        }

        @media (max-width: 576px) {
            .process-steps {
                grid-template-columns: 1fr;
                gap: 20px;
            }
        }

        /* ========== ARTICLES + SIDEBAR ========== */
        .articles-section {
            padding: var(--spacing-2xl) 0;
            background: var(--white);
        }

        .articles-layout {
            display: grid;
            grid-template-columns: 1fr 320px;
            gap: 40px;
        }

        .articles-main h2 {
            font-size: 24px;
            font-weight: 700;
            color: var(--gray-900);
            margin-bottom: 24px;
        }

        .article-card {
            display: flex;
            gap: 16px;
            padding: 20px;
            background: #fff;
            border-radius: var(--radius-md);
            border: 1px solid var(--gray-200);
            box-shadow: var(--card-shadow);
            margin-bottom: 16px;
            transition: all var(--transition-fast);
            cursor: pointer;
        }

        .article-card:hover {
            box-shadow: var(--card-shadow-hover);
            border-color: var(--primary-soft);
            transform: translateY(-2px);
        }

        .article-date {
            flex-shrink: 0;
            width: 60px;
            text-align: center;
            padding-top: 4px;
        }

        .article-date .day {
            font-size: 28px;
            font-weight: 700;
            color: var(--primary);
            line-height: 1;
        }

        .article-date .month {
            font-size: 12px;
            color: var(--gray-500);
            margin-top: 2px;
        }

        .article-body {
            flex: 1;
            min-width: 0;
        }

        .article-body h4 {
            font-size: 16px;
            font-weight: 600;
            color: var(--gray-800);
            margin-bottom: 6px;
            line-height: 1.4;
        }

        .article-body p {
            font-size: 14px;
            color: var(--gray-500);
            line-height: 1.7;
            margin-bottom: 8px;
            display: -webkit-box;
            -webkit-line-clamp: 3;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }

        .article-body .read-more {
            font-size: 13px;
            font-weight: 600;
            color: var(--primary-dark);
            display: inline-flex;
            align-items: center;
            gap: 4px;
            transition: all var(--transition-fast);
        }

        .article-body .read-more:hover {
            color: var(--primary-deep);
            gap: 8px;
        }

        .pagination-row {
            display: flex;
            justify-content: center;
            gap: 8px;
            margin-top: 24px;
        }

        .page-btn {
            padding: 8px 16px;
            border: 1px solid var(--gray-300);
            border-radius: var(--radius-sm);
            background: #fff;
            color: var(--gray-700);
            font-size: 14px;
            font-weight: 500;
            cursor: pointer;
            transition: all var(--transition-fast);
            text-decoration: none;
        }

        .page-btn:hover {
            background: var(--primary-bg);
            border-color: var(--primary-light);
            color: var(--primary-dark);
        }

        .page-btn.active {
            background: var(--primary);
            color: #fff;
            border-color: var(--primary);
            font-weight: 600;
        }

        .page-btn.disabled {
            opacity: 0.5;
            pointer-events: none;
        }

        /* Sidebar */
        .sidebar {
            flex-shrink: 0;
        }

        .sidebar-widget {
            background: #fff;
            border-radius: var(--radius-md);
            padding: 24px;
            border: 1px solid var(--gray-200);
            box-shadow: var(--card-shadow);
            margin-bottom: 20px;
        }

        .sidebar-widget h4 {
            font-size: 18px;
            font-weight: 700;
            color: var(--gray-800);
            margin-bottom: 16px;
            padding-bottom: 12px;
            border-bottom: 2px solid var(--primary-soft);
        }

        .tag-cloud {
            display: flex;
            flex-wrap: wrap;
            gap: 8px;
        }

        .tag {
            display: inline-block;
            padding: 6px 14px;
            border-radius: var(--radius-chip);
            font-size: 13px;
            font-weight: 500;
            background: var(--gray-100);
            color: var(--gray-600);
            transition: all var(--transition-fast);
            text-decoration: none;
            cursor: pointer;
        }

        .tag:hover {
            background: var(--primary-bg);
            color: var(--primary-dark);
        }

        .hot-article-item {
            padding: 10px 0;
            border-bottom: 1px solid var(--gray-150);
            font-size: 14px;
            color: var(--gray-700);
            cursor: pointer;
            transition: color var(--transition-fast);
        }

        .hot-article-item:hover {
            color: var(--primary-dark);
        }

        .hot-article-item:last-child {
            border-bottom: none;
        }

        .hot-article-item .hot-num {
            display: inline-block;
            width: 24px;
            height: 24px;
            line-height: 24px;
            text-align: center;
            border-radius: 4px;
            background: var(--primary-bg);
            color: var(--primary);
            font-size: 12px;
            font-weight: 700;
            margin-right: 8px;
        }

        @media (max-width: 992px) {
            .articles-layout {
                grid-template-columns: 1fr;
                gap: 28px;
            }

            .sidebar {
                order: -1;
            }
        }

        @media (max-width: 576px) {
            .article-card {
                flex-direction: column;
                gap: 8px;
            }

            .article-date {
                display: flex;
                align-items: center;
                gap: 8px;
                width: auto;
            }

            .article-date .day {
                font-size: 20px;
            }
        }

        /* ========== FAQ ========== */
        .faq-section {
            padding: var(--spacing-2xl) 0;
            background: var(--gray-100);
        }

        .faq-list {
            max-width: 900px;
            margin: 0 auto;
        }

        .faq-item {
            background: #fff;
            border-radius: var(--radius-md);
            margin-bottom: 12px;
            border: 1px solid var(--gray-200);
            overflow: hidden;
            box-shadow: var(--card-shadow);
        }

        .faq-question {
            padding: 18px 24px;
            cursor: pointer;
            display: flex;
            align-items: center;
            justify-content: space-between;
            font-size: 16px;
            font-weight: 600;
            color: var(--gray-800);
            transition: all var(--transition-fast);
            user-select: none;
        }

        .faq-question:hover {
            background: var(--gray-50);
        }

        .faq-question .faq-icon {
            width: 28px;
            height: 28px;
            border-radius: 50%;
            background: var(--primary-bg);
            color: var(--primary);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 14px;
            transition: transform var(--transition-fast);
            flex-shrink: 0;
        }

        .faq-item.open .faq-icon {
            transform: rotate(45deg);
            background: var(--primary);
            color: #fff;
        }

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.35s ease, padding 0.35s ease;
        }

        .faq-item.open .faq-answer {
            max-height: 400px;
        }

        .faq-answer-inner {
            padding: 0 24px 20px;
            font-size: 15px;
            color: var(--gray-600);
            line-height: 1.8;
        }

        /* ========== CTA SECTION ========== */
        .cta-section {
            padding: var(--spacing-2xl) 0;
            background: var(--white);
        }

        .cta-card {
            background: linear-gradient(135deg, #EBF3FA 0%, #D6E8FB 50%, #C5DCF8 100%);
            border-radius: var(--radius-lg);
            padding: 48px;
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 36px;
            align-items: center;
            box-shadow: var(--card-shadow-lg);
        }

        .cta-info h2 {
            font-size: 26px;
            font-weight: 700;
            color: var(--gray-900);
            margin-bottom: 12px;
            line-height: 1.3;
        }

        .cta-info p {
            font-size: 15px;
            color: var(--gray-600);
            line-height: 1.7;
        }

        .cta-form-wrap {
            display: flex;
            flex-direction: column;
            gap: 12px;
        }

        .cta-form-row {
            display: flex;
            gap: 12px;
        }

        .cta-form-wrap input {
            flex: 1;
            padding: 12px 16px;
            border: 1px solid var(--gray-300);
            border-radius: var(--radius-sm);
            font-size: 15px;
            background: #fff;
            transition: border-color var(--transition-fast);
        }

        .cta-form-wrap input:focus {
            border-color: var(--primary);
            outline: none;
            box-shadow: 0 0 0 3px rgba(13, 110, 253, 0.1);
        }

        .btn-cta-submit {
            padding: 14px 28px;
            background: var(--accent-orange);
            color: #fff;
            border: none;
            border-radius: var(--radius-sm);
            font-size: 16px;
            font-weight: 600;
            cursor: pointer;
            transition: all var(--transition-fast);
            text-align: center;
            white-space: nowrap;
        }

        .btn-cta-submit:hover {
            background: var(--accent-orange-hover);
            transform: translateY(-2px);
            box-shadow: 0 6px 20px rgba(255, 111, 0, 0.35);
        }

        @media (max-width: 768px) {
            .cta-card {
                grid-template-columns: 1fr;
                padding: 28px;
            }

            .cta-form-row {
                flex-direction: column;
            }

            .cta-info h2 {
                font-size: 22px;
            }
        }

        /* ========== FOOTER ========== */
        .site-footer {
            background: var(--footer-bg);
            color: var(--footer-text);
            padding: 48px 0 0;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 32px;
            padding-bottom: 36px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.1);
        }

        .footer-col h4 {
            font-size: 17px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 16px;
        }

        .footer-col p {
            font-size: 14px;
            line-height: 1.7;
            margin: 0;
        }

        .footer-col ul {
            list-style: none;
            padding: 0;
            margin: 0;
        }

        .footer-col ul li {
            margin-bottom: 8px;
        }

        .footer-col ul li a {
            color: var(--footer-text);
            font-size: 14px;
            transition: color var(--transition-fast);
            text-decoration: none;
        }

        .footer-col ul li a:hover {
            color: #fff;
        }

        .footer-bottom {
            padding: 20px 0;
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 6px;
            font-size: 13px;
            color: var(--footer-text);
        }

        .footer-bottom .divider {
            color: rgba(255, 255, 255, 0.2);
        }

        .footer-bottom a {
            color: var(--footer-text);
            text-decoration: none;
            transition: color var(--transition-fast);
        }

        .footer-bottom a:hover {
            color: #fff;
        }

        @media (max-width: 768px) {
            .footer-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 24px;
            }

            .footer-bottom {
                flex-direction: column;
                align-items: flex-start;
                gap: 4px;
            }

            .footer-bottom .divider {
                display: none;
            }
        }

        @media (max-width: 576px) {
            .footer-grid {
                grid-template-columns: 1fr;
            }
        }

        /* ========== UTILITY ========== */
        .btn-primary-custom {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 12px 24px;
            background: var(--primary);
            color: #fff;
            border-radius: var(--radius-sm);
            font-size: 15px;
            font-weight: 600;
            border: none;
            cursor: pointer;
            transition: all var(--transition-fast);
            text-decoration: none;
        }

        .btn-primary-custom:hover {
            background: var(--primary-dark);
            color: #fff;
            transform: translateY(-1px);
            box-shadow: 0 4px 12px rgba(13, 110, 253, 0.3);
        }

        .btn-outline-custom {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 11px 22px;
            background: transparent;
            color: var(--primary-dark);
            border-radius: var(--radius-sm);
            font-size: 15px;
            font-weight: 600;
            border: 1px solid var(--primary-soft);
            cursor: pointer;
            transition: all var(--transition-fast);
            text-decoration: none;
        }

        .btn-outline-custom:hover {
            background: var(--primary-bg);
            border-color: var(--primary-light);
            color: var(--primary-deep);
        }

/* roulang page: category6 */
:root {
            --primary: #0D6EFD;
            --primary-light: #3B8BFF;
            --primary-bg: #EBF3FA;
            --primary-soft: #D6E8FB;
            --primary-dark: #1565C0;
            --primary-deep: #0A4A9E;
            --accent-orange: #FF6F00;
            --accent-orange-hover: #E56500;
            --accent-orange-light: #FFF3E6;
            --gray-50: #F8F9FA;
            --gray-100: #F5F7FA;
            --gray-150: #EEF1F5;
            --gray-200: #E9ECEF;
            --gray-300: #DEE2E6;
            --gray-400: #ADB5BD;
            --gray-500: #6C757D;
            --gray-600: #495057;
            --gray-700: #343A40;
            --gray-800: #212529;
            --gray-900: #1A1D21;
            --footer-bg: #1E293B;
            --footer-text: #B0B8C4;
            --white: #FFFFFF;
            --card-shadow: 0 4px 12px rgba(0, 0, 0, 0.04);
            --card-shadow-hover: 0 8px 24px rgba(0, 0, 0, 0.08);
            --card-shadow-lg: 0 12px 32px rgba(0, 0, 0, 0.06);
            --radius-sm: 8px;
            --radius-md: 12px;
            --radius-lg: 16px;
            --radius-xl: 20px;
            --radius-chip: 20px;
            --spacing-xs: 8px;
            --spacing-sm: 16px;
            --spacing-md: 24px;
            --spacing-lg: 40px;
            --spacing-xl: 60px;
            --spacing-2xl: 80px;
            --spacing-3xl: 100px;
            --transition-fast: 0.2s ease;
            --transition-normal: 0.3s ease;
            --nav-height: 72px;
            --container-max: 1320px;
        }

        html {
            scroll-behavior: smooth;
            scroll-padding-top: var(--nav-height);
        }

        *,
        *::before,
        *::after {
            box-sizing: border-box;
        }

        body {
            font-family: 'PingFang SC', 'Microsoft YaHei', 'Helvetica Neue', Arial, sans-serif;
            font-size: 16px;
            line-height: 1.8;
            color: var(--gray-800);
            background-color: var(--white);
            background-image: linear-gradient(180deg, #F8FAFD 0%, #FFFFFF 100%);
            background-attachment: fixed;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            overflow-x: hidden;
            padding-top: var(--nav-height);
            margin: 0;
        }

        a {
            color: var(--primary-dark);
            text-decoration: none;
            transition: color var(--transition-fast);
        }

        a:hover {
            color: var(--primary-deep);
            text-decoration: none;
        }

        a:focus-visible {
            outline: 2px solid var(--primary);
            outline-offset: 3px;
            border-radius: 4px;
        }

        img {
            max-width: 100%;
            height: auto;
            display: block;
        }

        button,
        input,
        select,
        textarea {
            font-family: inherit;
            font-size: inherit;
        }

        .container-custom {
            max-width: var(--container-max);
            margin: 0 auto;
            padding: 0 var(--spacing-md);
        }

        @media (max-width: 768px) {
            .container-custom {
                padding: 0 var(--spacing-sm);
            }
        }

        /* ========== NAVIGATION ========== */
        .site-nav {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1050;
            height: var(--nav-height);
            background: var(--white);
            border-bottom: 1px solid var(--gray-200);
            display: flex;
            align-items: center;
            transition: box-shadow var(--transition-normal);
        }

        .site-nav.scrolled {
            box-shadow: 0 2px 16px rgba(0, 0, 0, 0.06);
        }

        .nav-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            width: 100%;
            max-width: var(--container-max);
            margin: 0 auto;
            padding: 0 var(--spacing-md);
            height: 100%;
        }

        .nav-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 22px;
            font-weight: 700;
            color: var(--primary-dark);
            white-space: nowrap;
            flex-shrink: 0;
        }

        .nav-logo .logo-icon {
            width: 40px;
            height: 40px;
            background: var(--primary);
            border-radius: var(--radius-sm);
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-size: 18px;
            font-weight: 700;
            flex-shrink: 0;
        }

        .nav-logo:hover {
            color: var(--primary-deep);
        }

        .nav-chips {
            display: flex;
            align-items: center;
            gap: 6px;
            flex-wrap: nowrap;
            overflow-x: auto;
            scrollbar-width: none;
            -ms-overflow-style: none;
            padding: 0 4px;
        }

        .nav-chips::-webkit-scrollbar {
            display: none;
        }

        .nav-chip {
            display: inline-flex;
            align-items: center;
            padding: 8px 16px;
            border-radius: var(--radius-chip);
            font-size: 14px;
            font-weight: 500;
            color: var(--primary-dark);
            background: transparent;
            border: 1px solid var(--primary-soft);
            white-space: nowrap;
            transition: all var(--transition-fast);
            cursor: pointer;
            text-decoration: none;
            flex-shrink: 0;
        }

        .nav-chip:hover {
            background: var(--primary-bg);
            border-color: var(--primary-light);
            color: var(--primary-dark);
        }

        .nav-chip.active {
            background: var(--primary);
            color: #fff;
            border-color: var(--primary);
            font-weight: 600;
        }

        .nav-cta {
            display: inline-flex;
            align-items: center;
            padding: 10px 22px;
            background: var(--accent-orange);
            color: #fff;
            border-radius: var(--radius-sm);
            font-weight: 600;
            font-size: 14px;
            white-space: nowrap;
            flex-shrink: 0;
            transition: all var(--transition-fast);
            text-decoration: none;
            border: none;
            cursor: pointer;
        }

        .nav-cta:hover {
            background: var(--accent-orange-hover);
            color: #fff;
            box-shadow: 0 4px 14px rgba(255, 111, 0, 0.35);
            transform: translateY(-1px);
        }

        .nav-toggle {
            display: none;
            background: none;
            border: none;
            font-size: 24px;
            color: var(--gray-700);
            cursor: pointer;
            padding: 8px;
            line-height: 1;
            flex-shrink: 0;
        }

        @media (max-width: 992px) {
            .nav-chips {
                display: none;
                position: absolute;
                top: var(--nav-height);
                left: 0;
                right: 0;
                background: var(--white);
                flex-direction: column;
                padding: var(--spacing-sm);
                gap: 4px;
                border-bottom: 1px solid var(--gray-200);
                box-shadow: 0 8px 24px rgba(0, 0, 0, 0.08);
                z-index: 1049;
            }

            .nav-chips.open {
                display: flex;
            }

            .nav-chip {
                width: 100%;
                justify-content: center;
                padding: 12px 16px;
                border-radius: var(--radius-md);
                font-size: 15px;
            }

            .nav-toggle {
                display: block;
            }

            .nav-cta {
                padding: 8px 16px;
                font-size: 13px;
            }

            .nav-inner {
                padding: 0 var(--spacing-sm);
            }
        }

        @media (max-width: 520px) {
            .nav-logo {
                font-size: 18px;
                gap: 6px;
            }

            .nav-logo .logo-icon {
                width: 32px;
                height: 32px;
                font-size: 14px;
            }

            .nav-cta {
                padding: 6px 12px;
                font-size: 12px;
                border-radius: 6px;
            }
        }

        /* ========== SECTION BASE ========== */
        .section {
            padding: var(--spacing-2xl) 0;
        }

        .section-sm {
            padding: var(--spacing-xl) 0;
        }

        .section-lg {
            padding: var(--spacing-3xl) 0;
        }

        .section-bg-light {
            background-color: var(--gray-100);
        }

        .section-bg-primary-soft {
            background-color: var(--primary-bg);
        }

        @media (max-width: 768px) {
            .section {
                padding: var(--spacing-xl) 0;
            }

            .section-lg {
                padding: var(--spacing-2xl) 0;
            }

            .section-sm {
                padding: var(--spacing-lg) 0;
            }
        }

        /* ========== HERO SECTION ========== */
        .hero-section {
            position: relative;
            padding: var(--spacing-3xl) 0 var(--spacing-2xl);
            background: linear-gradient(175deg, #F0F6FC 0%, #FFFFFF 40%, #F8FAFD 100%);
            overflow: hidden;
        }

        .hero-section::before {
            content: '';
            position: absolute;
            top: -60px;
            right: -80px;
            width: 420px;
            height: 420px;
            background: radial-gradient(circle, rgba(13, 110, 253, 0.06) 0%, transparent 70%);
            border-radius: 50%;
            pointer-events: none;
        }

        .hero-section::after {
            content: '';
            position: absolute;
            bottom: -40px;
            left: -60px;
            width: 300px;
            height: 300px;
            background: radial-gradient(circle, rgba(255, 111, 0, 0.05) 0%, transparent 70%);
            border-radius: 50%;
            pointer-events: none;
        }

        .hero-inner {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: var(--spacing-2xl);
            align-items: center;
            position: relative;
            z-index: 1;
        }

        .hero-content h1 {
            font-size: 36px;
            font-weight: 700;
            color: var(--gray-900);
            line-height: 1.3;
            margin-bottom: var(--spacing-md);
            letter-spacing: -0.5px;
        }

        .hero-content h1 .highlight {
            color: var(--primary);
            position: relative;
        }

        .hero-content .hero-subtitle {
            font-size: 17px;
            color: var(--gray-600);
            line-height: 1.7;
            margin-bottom: var(--spacing-lg);
            max-width: 520px;
        }

        .hero-benefits {
            list-style: none;
            padding: 0;
            margin: 0 0 var(--spacing-lg);
            display: flex;
            flex-direction: column;
            gap: 10px;
        }

        .hero-benefits li {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 15px;
            color: var(--gray-700);
            font-weight: 500;
        }

        .hero-benefits li .check-icon {
            width: 22px;
            height: 22px;
            background: var(--primary);
            color: #fff;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 11px;
            flex-shrink: 0;
        }

        .hero-cta-group {
            display: flex;
            gap: 14px;
            flex-wrap: wrap;
            margin-bottom: var(--spacing-md);
        }

        .btn-primary-custom {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 14px 28px;
            background: var(--accent-orange);
            color: #fff;
            border-radius: var(--radius-sm);
            font-weight: 600;
            font-size: 16px;
            border: none;
            cursor: pointer;
            transition: all var(--transition-fast);
            text-decoration: none;
            white-space: nowrap;
        }

        .btn-primary-custom:hover {
            background: var(--accent-orange-hover);
            color: #fff;
            box-shadow: 0 6px 20px rgba(255, 111, 0, 0.35);
            transform: translateY(-2px);
        }

        .btn-outline-custom {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 14px 28px;
            background: transparent;
            color: var(--primary-dark);
            border: 2px solid var(--primary-soft);
            border-radius: var(--radius-sm);
            font-weight: 600;
            font-size: 16px;
            cursor: pointer;
            transition: all var(--transition-fast);
            text-decoration: none;
            white-space: nowrap;
        }

        .btn-outline-custom:hover {
            background: var(--primary-bg);
            border-color: var(--primary-light);
            color: var(--primary-deep);
        }

        .hero-trust {
            display: flex;
            align-items: center;
            gap: var(--spacing-sm);
            flex-wrap: wrap;
            font-size: 13px;
            color: var(--gray-500);
        }

        .hero-trust .trust-item {
            display: flex;
            align-items: center;
            gap: 6px;
        }

        .hero-trust .trust-dot {
            width: 6px;
            height: 6px;
            background: var(--gray-400);
            border-radius: 50%;
        }

        .hero-visual {
            display: flex;
            align-items: center;
            justify-content: center;
            position: relative;
        }

        .hero-visual .hero-img-wrap {
            width: 100%;
            max-width: 500px;
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--card-shadow-lg);
            position: relative;
        }

        .hero-visual .hero-img-wrap img {
            width: 100%;
            height: 340px;
            object-fit: cover;
            border-radius: var(--radius-lg);
        }

        .hero-visual .hero-badge {
            position: absolute;
            bottom: 20px;
            left: 20px;
            background: rgba(255, 255, 255, 0.95);
            padding: 10px 18px;
            border-radius: var(--radius-md);
            font-size: 13px;
            font-weight: 600;
            color: var(--primary-dark);
            box-shadow: var(--card-shadow);
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .hero-visual .hero-badge .live-dot {
            width: 10px;
            height: 10px;
            background: #22C55E;
            border-radius: 50%;
            animation: pulse-dot 1.8s infinite;
        }

        @keyframes pulse-dot {
            0%,
            100% {
                opacity: 1;
            }
            50% {
                opacity: 0.35;
            }
        }

        @media (max-width: 992px) {
            .hero-inner {
                grid-template-columns: 1fr;
                gap: var(--spacing-xl);
            }

            .hero-content h1 {
                font-size: 28px;
            }

            .hero-visual .hero-img-wrap img {
                height: 260px;
            }

            .hero-content .hero-subtitle {
                max-width: 100%;
            }
        }

        @media (max-width: 520px) {
            .hero-content h1 {
                font-size: 24px;
            }

            .hero-cta-group {
                flex-direction: column;
            }

            .btn-primary-custom,
            .btn-outline-custom {
                width: 100%;
                justify-content: center;
                padding: 12px 20px;
                font-size: 15px;
            }

            .hero-visual .hero-img-wrap img {
                height: 200px;
            }
        }

        /* ========== CARDS ========== */
        .card-custom {
            background: var(--white);
            border-radius: var(--radius-md);
            box-shadow: var(--card-shadow);
            transition: all var(--transition-normal);
            overflow: hidden;
            border: 1px solid var(--gray-150);
            height: 100%;
        }

        .card-custom:hover {
            box-shadow: var(--card-shadow-hover);
            transform: translateY(-3px);
            border-color: var(--primary-soft);
        }

        .card-custom .card-img {
            width: 100%;
            height: 200px;
            object-fit: cover;
            display: block;
        }

        .card-custom .card-body {
            padding: var(--spacing-md);
        }

        .card-custom .card-title {
            font-size: 18px;
            font-weight: 600;
            color: var(--gray-900);
            margin-bottom: 8px;
            line-height: 1.4;
        }

        .card-custom .card-text {
            font-size: 14px;
            color: var(--gray-600);
            line-height: 1.7;
            margin-bottom: 12px;
        }

        .card-custom .card-meta {
            font-size: 12px;
            color: var(--gray-400);
            display: flex;
            align-items: center;
            gap: 10px;
        }

        .card-custom .card-link {
            font-size: 14px;
            font-weight: 600;
            color: var(--primary);
            display: inline-flex;
            align-items: center;
            gap: 6px;
            transition: all var(--transition-fast);
        }

        .card-custom .card-link:hover {
            color: var(--primary-deep);
            gap: 10px;
        }

        .card-custom .card-tag {
            display: inline-block;
            padding: 4px 10px;
            background: var(--primary-bg);
            color: var(--primary-dark);
            border-radius: var(--radius-chip);
            font-size: 12px;
            font-weight: 500;
            margin-bottom: 8px;
        }

        /* ========== FEATURE CARDS ========== */
        .feature-card {
            background: var(--white);
            border-radius: var(--radius-md);
            padding: var(--spacing-lg);
            box-shadow: var(--card-shadow);
            border: 1px solid var(--gray-150);
            transition: all var(--transition-normal);
            height: 100%;
            display: flex;
            flex-direction: column;
            align-items: flex-start;
        }

        .feature-card:hover {
            box-shadow: var(--card-shadow-hover);
            transform: translateY(-2px);
            border-color: var(--primary-soft);
        }

        .feature-card .feature-icon {
            width: 52px;
            height: 52px;
            background: var(--primary-bg);
            border-radius: var(--radius-md);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 22px;
            color: var(--primary);
            margin-bottom: var(--spacing-sm);
            flex-shrink: 0;
        }

        .feature-card h3 {
            font-size: 18px;
            font-weight: 600;
            color: var(--gray-900);
            margin-bottom: 8px;
        }

        .feature-card p {
            font-size: 14px;
            color: var(--gray-600);
            line-height: 1.7;
            margin: 0;
            flex-grow: 1;
        }

        /* ========== SECTION HEADER ========== */
        .section-header {
            text-align: center;
            margin-bottom: var(--spacing-xl);
        }

        .section-header h2 {
            font-size: 28px;
            font-weight: 700;
            color: var(--gray-900);
            margin-bottom: 10px;
            letter-spacing: -0.3px;
        }

        .section-header .section-subtitle {
            font-size: 16px;
            color: var(--gray-500);
            max-width: 600px;
            margin: 0 auto;
            line-height: 1.6;
        }

        @media (max-width: 768px) {
            .section-header h2 {
                font-size: 24px;
            }

            .section-header .section-subtitle {
                font-size: 14px;
            }
        }

        /* ========== NEWS GRID ========== */
        .news-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: var(--spacing-md);
        }

        @media (max-width: 992px) {
            .news-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }

        @media (max-width: 600px) {
            .news-grid {
                grid-template-columns: 1fr;
            }
        }

        /* ========== STEPS ========== */
        .steps-row {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: var(--spacing-md);
            position: relative;
        }

        .step-card {
            text-align: center;
            position: relative;
            padding: var(--spacing-md);
        }

        .step-card .step-number {
            width: 48px;
            height: 48px;
            background: var(--primary);
            color: #fff;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 20px;
            font-weight: 700;
            margin: 0 auto var(--spacing-sm);
            position: relative;
            z-index: 2;
        }

        .step-card h4 {
            font-size: 16px;
            font-weight: 600;
            color: var(--gray-900);
            margin-bottom: 6px;
        }

        .step-card p {
            font-size: 13px;
            color: var(--gray-500);
            line-height: 1.6;
            margin: 0;
        }

        .step-connector {
            position: absolute;
            top: 24px;
            left: calc(50% + 30px);
            width: calc(100% - 60px);
            height: 2px;
            background: var(--primary-soft);
            z-index: 1;
        }

        @media (max-width: 768px) {
            .steps-row {
                grid-template-columns: repeat(2, 1fr);
                gap: var(--spacing-sm);
            }

            .step-connector {
                display: none;
            }
        }

        @media (max-width: 480px) {
            .steps-row {
                grid-template-columns: 1fr;
            }
        }

        /* ========== CTA SECTION ========== */
        .cta-section {
            background: var(--primary-bg);
            border-radius: var(--radius-lg);
            padding: var(--spacing-2xl);
            text-align: center;
            position: relative;
            overflow: hidden;
        }

        .cta-section::before {
            content: '';
            position: absolute;
            top: -30px;
            right: -30px;
            width: 180px;
            height: 180px;
            background: radial-gradient(circle, rgba(13, 110, 253, 0.08) 0%, transparent 70%);
            border-radius: 50%;
            pointer-events: none;
        }

        .cta-section h2 {
            font-size: 26px;
            font-weight: 700;
            color: var(--gray-900);
            margin-bottom: 10px;
            position: relative;
            z-index: 1;
        }

        .cta-section .cta-subtitle {
            font-size: 16px;
            color: var(--gray-600);
            margin-bottom: var(--spacing-lg);
            position: relative;
            z-index: 1;
        }

        .cta-form {
            display: flex;
            gap: 12px;
            justify-content: center;
            flex-wrap: wrap;
            position: relative;
            z-index: 1;
            max-width: 600px;
            margin: 0 auto;
        }

        .cta-form input {
            flex: 1;
            min-width: 180px;
            padding: 13px 18px;
            border: 2px solid var(--gray-300);
            border-radius: var(--radius-sm);
            font-size: 15px;
            color: var(--gray-800);
            background: var(--white);
            transition: all var(--transition-fast);
            outline: none;
        }

        .cta-form input:focus {
            border-color: var(--primary);
            box-shadow: 0 0 0 3px rgba(13, 110, 253, 0.1);
        }

        .cta-form .btn-submit {
            padding: 13px 28px;
            background: var(--accent-orange);
            color: #fff;
            border: none;
            border-radius: var(--radius-sm);
            font-weight: 600;
            font-size: 15px;
            cursor: pointer;
            transition: all var(--transition-fast);
            white-space: nowrap;
        }

        .cta-form .btn-submit:hover {
            background: var(--accent-orange-hover);
            box-shadow: 0 6px 20px rgba(255, 111, 0, 0.35);
            transform: translateY(-2px);
        }

        @media (max-width: 520px) {
            .cta-section {
                padding: var(--spacing-xl) var(--spacing-sm);
            }

            .cta-form {
                flex-direction: column;
            }

            .cta-form input {
                width: 100%;
                min-width: auto;
            }

            .cta-form .btn-submit {
                width: 100%;
            }
        }

        /* ========== FAQ ========== */
        .faq-list {
            max-width: 800px;
            margin: 0 auto;
        }

        .faq-item {
            background: var(--white);
            border: 1px solid var(--gray-200);
            border-radius: var(--radius-md);
            margin-bottom: 12px;
            overflow: hidden;
            transition: all var(--transition-fast);
        }

        .faq-item:hover {
            border-color: var(--primary-soft);
        }

        .faq-question {
            width: 100%;
            padding: 18px 20px;
            background: none;
            border: none;
            text-align: left;
            font-size: 16px;
            font-weight: 600;
            color: var(--gray-800);
            cursor: pointer;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 12px;
            transition: all var(--transition-fast);
            line-height: 1.5;
        }

        .faq-question .faq-icon {
            width: 28px;
            height: 28px;
            background: var(--primary-bg);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 14px;
            color: var(--primary);
            flex-shrink: 0;
            transition: all var(--transition-fast);
        }

        .faq-item.open .faq-question .faq-icon {
            background: var(--primary);
            color: #fff;
            transform: rotate(45deg);
        }

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.35s ease, padding 0.35s ease;
        }

        .faq-item.open .faq-answer {
            max-height: 400px;
        }

        .faq-answer-inner {
            padding: 0 20px 18px;
            font-size: 14px;
            color: var(--gray-600);
            line-height: 1.8;
        }

        /* ========== STATS BAR ========== */
        .stats-bar {
            display: flex;
            justify-content: center;
            gap: var(--spacing-2xl);
            flex-wrap: wrap;
            padding: var(--spacing-lg) 0;
            border-top: 1px solid var(--gray-200);
            border-bottom: 1px solid var(--gray-200);
        }

        .stat-item {
            text-align: center;
            flex-shrink: 0;
        }

        .stat-item .stat-number {
            font-size: 36px;
            font-weight: 700;
            color: var(--primary);
            line-height: 1.2;
        }

        .stat-item .stat-label {
            font-size: 13px;
            color: var(--gray-500);
            margin-top: 4px;
        }

        @media (max-width: 768px) {
            .stats-bar {
                gap: var(--spacing-lg);
            }

            .stat-item .stat-number {
                font-size: 28px;
            }
        }

        /* ========== HIGHLIGHT BOX ========== */
        .highlight-box {
            background: var(--white);
            border-left: 4px solid var(--primary);
            border-radius: 0 var(--radius-md) var(--radius-md) 0;
            padding: var(--spacing-md) var(--spacing-lg);
            box-shadow: var(--card-shadow);
            margin: var(--spacing-md) 0;
        }

        .highlight-box p {
            margin: 0;
            font-size: 15px;
            color: var(--gray-700);
            line-height: 1.7;
        }

        .highlight-box .highlight-label {
            font-size: 12px;
            font-weight: 600;
            color: var(--primary);
            text-transform: uppercase;
            letter-spacing: 1px;
            margin-bottom: 4px;
        }

        /* ========== FOOTER ========== */
        .site-footer {
            background: var(--footer-bg);
            color: var(--footer-text);
            padding: var(--spacing-2xl) 0 0;
            margin-top: var(--spacing-2xl);
        }

        .footer-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: var(--spacing-lg);
            padding-bottom: var(--spacing-xl);
            border-bottom: 1px solid rgba(255, 255, 255, 0.1);
        }

        .footer-col h4 {
            font-size: 16px;
            font-weight: 600;
            color: #fff;
            margin-bottom: var(--spacing-sm);
        }

        .footer-col p {
            font-size: 13px;
            line-height: 1.7;
            margin: 0;
            color: var(--footer-text);
        }

        .footer-col ul {
            list-style: none;
            padding: 0;
            margin: 0;
        }

        .footer-col ul li {
            margin-bottom: 8px;
        }

        .footer-col ul li a {
            color: var(--footer-text);
            font-size: 13px;
            transition: color var(--transition-fast);
            text-decoration: none;
        }

        .footer-col ul li a:hover {
            color: #fff;
        }

        .footer-bottom {
            display: flex;
            align-items: center;
            justify-content: center;
            flex-wrap: wrap;
            gap: 6px;
            padding: var(--spacing-md) 0;
            font-size: 13px;
            color: var(--footer-text);
        }

        .footer-bottom .divider {
            color: rgba(255, 255, 255, 0.2);
            margin: 0 4px;
        }

        .footer-bottom a {
            color: var(--footer-text);
            text-decoration: none;
            font-size: 13px;
            transition: color var(--transition-fast);
        }

        .footer-bottom a:hover {
            color: #fff;
        }

        @media (max-width: 768px) {
            .footer-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: var(--spacing-md);
            }
        }

        @media (max-width: 480px) {
            .footer-grid {
                grid-template-columns: 1fr;
            }

            .footer-bottom {
                flex-direction: column;
                text-align: center;
                gap: 4px;
            }

            .footer-bottom .divider {
                display: none;
            }
        }

        /* ========== UTILITY ========== */
        .text-primary {
            color: var(--primary) !important;
        }
        .text-accent {
            color: var(--accent-orange) !important;
        }
        .fw-bold {
            font-weight: 700 !important;
        }
        .mb-0 {
            margin-bottom: 0 !important;
        }
        .mt-auto {
            margin-top: auto !important;
        }

        /* ========== OVERRIDE BOOTSTRAP ========== */
        .btn {
            border-radius: var(--radius-sm);
            font-weight: 600;
            transition: all var(--transition-fast);
        }

        .card {
            border-radius: var(--radius-md);
            border: 1px solid var(--gray-150);
            box-shadow: var(--card-shadow);
            transition: all var(--transition-normal);
        }

        .card:hover {
            box-shadow: var(--card-shadow-hover);
        }

        .form-control {
            border-radius: var(--radius-sm);
            border: 2px solid var(--gray-300);
            padding: 12px 16px;
            font-size: 15px;
            transition: all var(--transition-fast);
        }

        .form-control:focus {
            border-color: var(--primary);
            box-shadow: 0 0 0 3px rgba(13, 110, 253, 0.1);
        }