/* roulang page: index */
:root {
            --primary: #1a56db;
            --primary-dark: #1341a8;
            --primary-light: #3b7bf7;
            --secondary: #f59e0b;
            --secondary-dark: #d97706;
            --accent: #8b5cf6;
            --bg-body: #f8fafc;
            --bg-card: #ffffff;
            --text-primary: #0f172a;
            --text-secondary: #475569;
            --text-muted: #94a3b8;
            --border-color: #e2e8f0;
            --radius: 16px;
            --radius-sm: 10px;
            --radius-xs: 6px;
            --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.06), 0 1px 2px rgba(0, 0, 0, 0.04);
            --shadow-md: 0 4px 20px rgba(0, 0, 0, 0.08);
            --shadow-lg: 0 12px 40px rgba(0, 0, 0, 0.12);
            --shadow-xl: 0 20px 60px rgba(0, 0, 0, 0.15);
            --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            --font-sans: 'Inter', ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
        }

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

        html {
            scroll-behavior: smooth;
            -webkit-text-size-adjust: 100%;
        }

        body {
            margin: 0;
            font-family: var(--font-sans);
            background-color: var(--bg-body);
            color: var(--text-primary);
            line-height: 1.6;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

        a {
            color: inherit;
            text-decoration: none;
            transition: var(--transition);
        }

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

        button,
        input,
        textarea,
        select {
            font-family: inherit;
            font-size: inherit;
            line-height: inherit;
            border: none;
            outline: none;
        }

        button {
            cursor: pointer;
            background: none;
            padding: 0;
        }

        ul,
        ol {
            list-style: none;
            padding: 0;
            margin: 0;
        }

        h1,
        h2,
        h3,
        h4,
        h5,
        h6,
        p {
            margin: 0;
        }

        .container {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding-left: 20px;
            padding-right: 20px;
        }

        @media (min-width: 640px) {
            .container {
                padding-left: 28px;
                padding-right: 28px;
            }
        }

        @media (min-width: 1024px) {
            .container {
                padding-left: 32px;
                padding-right: 32px;
            }
        }

        /* Header & Navigation */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            background: rgba(255, 255, 255, 0.85);
            backdrop-filter: blur(16px) saturate(180%);
            -webkit-backdrop-filter: blur(16px) saturate(180%);
            border-bottom: 1px solid rgba(226, 232, 240, 0.7);
            transition: var(--transition);
        }

        .site-header.scrolled {
            background: rgba(255, 255, 255, 0.96);
            box-shadow: 0 4px 30px rgba(0, 0, 0, 0.06);
        }

        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 68px;
            gap: 16px;
        }

        .logo-text {
            font-size: 1.35rem;
            font-weight: 700;
            background: linear-gradient(135deg, var(--primary), var(--primary-light));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            letter-spacing: -0.3px;
            white-space: nowrap;
        }

        .logo-text i {
            -webkit-text-fill-color: initial;
            color: var(--primary);
            margin-right: 6px;
            font-size: 1.2rem;
        }

        .nav-list {
            display: flex;
            align-items: center;
            gap: 4px;
        }

        .nav-list a {
            padding: 8px 18px;
            border-radius: 50px;
            font-size: 0.9rem;
            font-weight: 500;
            color: var(--text-secondary);
            transition: var(--transition);
            position: relative;
            white-space: nowrap;
        }

        .nav-list a:hover {
            color: var(--primary);
            background: rgba(26, 86, 219, 0.06);
        }

        .nav-list a.active {
            color: #fff;
            background: var(--primary);
            box-shadow: 0 4px 14px rgba(26, 86, 219, 0.25);
        }

        .nav-list a.active:hover {
            background: var(--primary-dark);
        }

        .nav-cta {
            padding: 8px 22px;
            border-radius: 50px;
            font-size: 0.9rem;
            font-weight: 600;
            background: linear-gradient(135deg, var(--secondary), #f97316);
            color: #fff;
            box-shadow: 0 4px 14px rgba(245, 158, 11, 0.3);
            transition: var(--transition);
            white-space: nowrap;
        }

        .nav-cta:hover {
            transform: translateY(-2px);
            box-shadow: 0 8px 24px rgba(245, 158, 11, 0.4);
        }

        .mobile-toggle {
            display: none;
            flex-direction: column;
            gap: 5px;
            padding: 4px;
            background: none;
            border: none;
            cursor: pointer;
        }

        .mobile-toggle span {
            display: block;
            width: 26px;
            height: 2.5px;
            background: var(--text-primary);
            border-radius: 4px;
            transition: var(--transition);
        }

        .mobile-toggle.open span:nth-child(1) {
            transform: rotate(45deg) translate(5px, 5px);
        }

        .mobile-toggle.open span:nth-child(2) {
            opacity: 0;
        }

        .mobile-toggle.open span:nth-child(3) {
            transform: rotate(-45deg) translate(5px, -5px);
        }

        @media (max-width: 768px) {
            .mobile-toggle {
                display: flex;
            }

            .nav-list {
                position: fixed;
                top: 68px;
                left: 0;
                right: 0;
                background: rgba(255, 255, 255, 0.98);
                backdrop-filter: blur(20px);
                -webkit-backdrop-filter: blur(20px);
                flex-direction: column;
                padding: 20px 24px 28px;
                gap: 6px;
                border-bottom: 1px solid var(--border-color);
                box-shadow: 0 20px 40px rgba(0, 0, 0, 0.08);
                transform: translateY(-120%);
                opacity: 0;
                pointer-events: none;
                transition: var(--transition);
            }

            .nav-list.open {
                transform: translateY(0);
                opacity: 1;
                pointer-events: auto;
            }

            .nav-list a {
                width: 100%;
                padding: 12px 18px;
                font-size: 1rem;
                border-radius: var(--radius-xs);
            }

            .nav-list a.active {
                background: var(--primary);
                color: #fff;
            }

            .nav-cta {
                display: none;
            }

            .mobile-cta {
                display: block !important;
                margin-top: 8px;
                text-align: center;
                padding: 12px 18px;
                border-radius: var(--radius-sm);
                font-size: 1rem;
                font-weight: 600;
                background: linear-gradient(135deg, var(--secondary), #f97316);
                color: #fff;
                box-shadow: 0 4px 14px rgba(245, 158, 11, 0.3);
            }
        }

        @media (min-width: 769px) {
            .mobile-cta {
                display: none !important;
            }
        }

        /* Hero Section */
        .hero-section {
            position: relative;
            min-height: 92vh;
            display: flex;
            align-items: center;
            justify-content: center;
            padding: 120px 20px 80px;
            background: linear-gradient(135deg, #0b1a3a 0%, #0f2847 40%, #1a3a5c 100%);
            overflow: hidden;
        }

        .hero-bg {
            position: absolute;
            inset: 0;
            background-image: url('/assets/images/backpic/back-1.png');
            background-size: cover;
            background-position: center;
            background-repeat: no-repeat;
            opacity: 0.25;
            mix-blend-mode: overlay;
        }

        .hero-bg-overlay {
            position: absolute;
            inset: 0;
            background: radial-gradient(ellipse at 30% 50%, rgba(26, 86, 219, 0.25) 0%, transparent 60%),
                radial-gradient(ellipse at 70% 50%, rgba(139, 92, 246, 0.15) 0%, transparent 60%);
        }

        .hero-content {
            position: relative;
            z-index: 2;
            text-align: center;
            max-width: 800px;
            margin: 0 auto;
        }

        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 6px 18px;
            border-radius: 50px;
            background: rgba(255, 255, 255, 0.08);
            backdrop-filter: blur(8px);
            border: 1px solid rgba(255, 255, 255, 0.12);
            font-size: 0.85rem;
            color: rgba(255, 255, 255, 0.85);
            margin-bottom: 28px;
        }

        .hero-badge i {
            color: var(--secondary);
            font-size: 0.75rem;
        }

        .hero-title {
            font-size: clamp(2.4rem, 6vw, 4.2rem);
            font-weight: 800;
            line-height: 1.12;
            color: #fff;
            letter-spacing: -0.02em;
            margin-bottom: 20px;
        }

        .hero-title span {
            background: linear-gradient(135deg, #fbbf24, #f97316, #f59e0b);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }

        .hero-desc {
            font-size: clamp(1rem, 1.6vw, 1.2rem);
            color: rgba(255, 255, 255, 0.7);
            max-width: 600px;
            margin: 0 auto 36px;
            line-height: 1.7;
        }

        .hero-actions {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            justify-content: center;
            gap: 14px;
        }

        .hero-btn-primary {
            padding: 14px 36px;
            border-radius: 50px;
            font-size: 1.05rem;
            font-weight: 600;
            background: linear-gradient(135deg, var(--secondary), #f97316);
            color: #fff;
            box-shadow: 0 8px 28px rgba(245, 158, 11, 0.35);
            transition: var(--transition);
            border: none;
        }

        .hero-btn-primary:hover {
            transform: translateY(-3px);
            box-shadow: 0 12px 40px rgba(245, 158, 11, 0.45);
        }

        .hero-btn-secondary {
            padding: 14px 36px;
            border-radius: 50px;
            font-size: 1.05rem;
            font-weight: 600;
            background: rgba(255, 255, 255, 0.08);
            backdrop-filter: blur(8px);
            border: 1px solid rgba(255, 255, 255, 0.18);
            color: #fff;
            transition: var(--transition);
        }

        .hero-btn-secondary:hover {
            background: rgba(255, 255, 255, 0.16);
            border-color: rgba(255, 255, 255, 0.3);
        }

        .hero-stats {
            display: flex;
            flex-wrap: wrap;
            justify-content: center;
            gap: 32px 48px;
            margin-top: 50px;
            padding-top: 40px;
            border-top: 1px solid rgba(255, 255, 255, 0.08);
        }

        .hero-stat-item {
            text-align: center;
        }

        .hero-stat-number {
            font-size: 1.8rem;
            font-weight: 700;
            color: #fff;
            letter-spacing: -0.5px;
        }

        .hero-stat-number i {
            color: var(--secondary);
            font-size: 1.2rem;
            margin-right: 4px;
        }

        .hero-stat-label {
            font-size: 0.85rem;
            color: rgba(255, 255, 255, 0.55);
            margin-top: 4px;
        }

        /* Section Common */
        .section-block {
            padding: 80px 0;
        }

        @media (max-width: 768px) {
            .section-block {
                padding: 56px 0;
            }
        }

        .section-header {
            text-align: center;
            max-width: 680px;
            margin: 0 auto 52px;
        }

        .section-tag {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 4px 16px;
            border-radius: 50px;
            background: rgba(26, 86, 219, 0.08);
            color: var(--primary);
            font-size: 0.8rem;
            font-weight: 600;
            letter-spacing: 0.5px;
            margin-bottom: 16px;
        }

        .section-title {
            font-size: clamp(1.6rem, 3.2vw, 2.4rem);
            font-weight: 700;
            color: var(--text-primary);
            line-height: 1.25;
            margin-bottom: 14px;
        }

        .section-desc {
            font-size: 1.05rem;
            color: var(--text-secondary);
            line-height: 1.7;
        }

        /* Intro Section */
        .intro-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 48px;
            align-items: center;
        }

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

        .intro-image {
            border-radius: var(--radius);
            overflow: hidden;
            box-shadow: var(--shadow-lg);
            aspect-ratio: 4/3;
            background: var(--border-color);
        }

        .intro-image img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: var(--transition);
        }

        .intro-image:hover img {
            transform: scale(1.03);
        }

        .intro-content h3 {
            font-size: 1.6rem;
            font-weight: 700;
            margin-bottom: 16px;
            color: var(--text-primary);
        }

        .intro-content p {
            color: var(--text-secondary);
            line-height: 1.8;
            margin-bottom: 16px;
        }

        .intro-features {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 12px;
            margin-top: 20px;
        }

        @media (max-width: 480px) {
            .intro-features {
                grid-template-columns: 1fr;
            }
        }

        .intro-feature-item {
            display: flex;
            align-items: center;
            gap: 10px;
            padding: 10px 14px;
            background: rgba(26, 86, 219, 0.04);
            border-radius: var(--radius-xs);
            font-size: 0.92rem;
            color: var(--text-secondary);
        }

        .intro-feature-item i {
            color: var(--primary);
            font-size: 0.9rem;
            width: 20px;
            text-align: center;
        }

        /* Category Tabs Section */
        .category-tabs {
            display: flex;
            flex-wrap: wrap;
            justify-content: center;
            gap: 12px;
            margin-bottom: 40px;
        }

        .category-tab {
            padding: 10px 26px;
            border-radius: 50px;
            font-size: 0.92rem;
            font-weight: 500;
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            color: var(--text-secondary);
            transition: var(--transition);
            box-shadow: var(--shadow-sm);
        }

        .category-tab:hover {
            border-color: var(--primary-light);
            color: var(--primary);
            transform: translateY(-2px);
            box-shadow: var(--shadow-md);
        }

        .category-tab.active {
            background: var(--primary);
            color: #fff;
            border-color: var(--primary);
            box-shadow: 0 4px 16px rgba(26, 86, 219, 0.25);
        }

        .category-tab i {
            margin-right: 6px;
        }

        .category-card-grid {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
            gap: 24px;
        }

        .category-card {
            background: var(--bg-card);
            border-radius: var(--radius);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border-color);
            transition: var(--transition);
        }

        .category-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-lg);
            border-color: transparent;
        }

        .category-card-img {
            aspect-ratio: 16/9;
            overflow: hidden;
            background: var(--border-color);
        }

        .category-card-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: var(--transition);
        }

        .category-card:hover .category-card-img img {
            transform: scale(1.06);
        }

        .category-card-body {
            padding: 20px 22px 24px;
        }

        .category-card-body h3 {
            font-size: 1.1rem;
            font-weight: 600;
            margin-bottom: 8px;
            color: var(--text-primary);
        }

        .category-card-body p {
            font-size: 0.88rem;
            color: var(--text-secondary);
            line-height: 1.6;
            margin-bottom: 14px;
        }

        .category-card-link {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-size: 0.88rem;
            font-weight: 600;
            color: var(--primary);
            transition: var(--transition);
        }

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

        /* Features Section */
        .features-grid {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
            gap: 24px;
        }

        .feature-card {
            background: var(--bg-card);
            border-radius: var(--radius);
            padding: 32px 24px 28px;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border-color);
            transition: var(--transition);
            text-align: center;
        }

        .feature-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-md);
            border-color: transparent;
        }

        .feature-icon {
            width: 58px;
            height: 58px;
            border-radius: 16px;
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 18px;
            font-size: 1.4rem;
            color: #fff;
            background: linear-gradient(135deg, var(--primary), var(--primary-light));
        }

        .feature-icon.orange {
            background: linear-gradient(135deg, var(--secondary), #f97316);
        }

        .feature-icon.purple {
            background: linear-gradient(135deg, var(--accent), #a78bfa);
        }

        .feature-icon.teal {
            background: linear-gradient(135deg, #0d9488, #2dd4bf);
        }

        .feature-card h3 {
            font-size: 1.1rem;
            font-weight: 600;
            margin-bottom: 10px;
            color: var(--text-primary);
        }

        .feature-card p {
            font-size: 0.9rem;
            color: var(--text-secondary);
            line-height: 1.7;
        }

        /* Stats / Data Section */
        .stats-section {
            background: linear-gradient(135deg, #0b1a3a, #1a3a5c);
            position: relative;
            overflow: hidden;
        }

        .stats-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background-image: url('/assets/images/backpic/back-2.png');
            background-size: cover;
            background-position: center;
            opacity: 0.08;
            mix-blend-mode: overlay;
        }

        .stats-grid {
            position: relative;
            z-index: 1;
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
            gap: 32px;
            text-align: center;
        }

        .stats-item {
            padding: 20px 12px;
        }

        .stats-number {
            font-size: 2.6rem;
            font-weight: 800;
            color: #fff;
            letter-spacing: -1px;
            margin-bottom: 6px;
        }

        .stats-number i {
            color: var(--secondary);
            font-size: 1.6rem;
            margin-right: 6px;
        }

        .stats-label {
            font-size: 0.95rem;
            color: rgba(255, 255, 255, 0.6);
        }

        /* News / CMS List Section */
        .news-grid {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
            gap: 24px;
        }

        .news-card {
            background: var(--bg-card);
            border-radius: var(--radius);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border-color);
            transition: var(--transition);
        }

        .news-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-md);
            border-color: transparent;
        }

        .news-card-img {
            aspect-ratio: 16/10;
            overflow: hidden;
            background: var(--border-color);
        }

        .news-card-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: var(--transition);
        }

        .news-card:hover .news-card-img img {
            transform: scale(1.05);
        }

        .news-card-body {
            padding: 18px 20px 22px;
        }

        .news-meta {
            display: flex;
            align-items: center;
            gap: 12px;
            font-size: 0.78rem;
            color: var(--text-muted);
            margin-bottom: 10px;
        }

        .news-meta .tag {
            display: inline-block;
            padding: 2px 10px;
            border-radius: 50px;
            background: rgba(26, 86, 219, 0.08);
            color: var(--primary);
            font-weight: 500;
            font-size: 0.72rem;
        }

        .news-card-body h3 {
            font-size: 1rem;
            font-weight: 600;
            color: var(--text-primary);
            line-height: 1.45;
            margin-bottom: 8px;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }

        .news-card-body p {
            font-size: 0.85rem;
            color: var(--text-secondary);
            line-height: 1.6;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }

        .news-empty {
            grid-column: 1 / -1;
            text-align: center;
            padding: 48px 20px;
            color: var(--text-muted);
            font-size: 1rem;
        }

        .news-empty i {
            font-size: 2rem;
            display: block;
            margin-bottom: 12px;
            color: var(--border-color);
        }

        /* FAQ Section */
        .faq-list {
            max-width: 720px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 12px;
        }

        .faq-item {
            background: var(--bg-card);
            border-radius: var(--radius-sm);
            border: 1px solid var(--border-color);
            overflow: hidden;
            transition: var(--transition);
        }

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

        .faq-question {
            width: 100%;
            padding: 18px 22px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            font-size: 1rem;
            font-weight: 500;
            color: var(--text-primary);
            background: none;
            text-align: left;
            cursor: pointer;
            transition: var(--transition);
        }

        .faq-question:hover {
            color: var(--primary);
        }

        .faq-question i {
            font-size: 0.85rem;
            color: var(--text-muted);
            transition: var(--transition);
            flex-shrink: 0;
        }

        .faq-item.open .faq-question i {
            transform: rotate(180deg);
            color: var(--primary);
        }

        .faq-answer {
            padding: 0 22px 18px;
            font-size: 0.92rem;
            color: var(--text-secondary);
            line-height: 1.7;
            display: none;
        }

        .faq-item.open .faq-answer {
            display: block;
        }

        /* CTA Section */
        .cta-section {
            background: linear-gradient(135deg, #0b1a3a 0%, #1a3a5c 50%, #0f2847 100%);
            position: relative;
            overflow: hidden;
            padding: 80px 0;
        }

        .cta-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background-image: url('/assets/images/backpic/back-3.png');
            background-size: cover;
            background-position: center;
            opacity: 0.06;
            mix-blend-mode: overlay;
        }

        .cta-content {
            position: relative;
            z-index: 1;
            text-align: center;
            max-width: 600px;
            margin: 0 auto;
        }

        .cta-content h2 {
            font-size: clamp(1.6rem, 3vw, 2.2rem);
            font-weight: 700;
            color: #fff;
            margin-bottom: 14px;
        }

        .cta-content p {
            font-size: 1.05rem;
            color: rgba(255, 255, 255, 0.65);
            margin-bottom: 32px;
            line-height: 1.7;
        }

        .cta-buttons {
            display: flex;
            flex-wrap: wrap;
            justify-content: center;
            gap: 14px;
        }

        .cta-btn-primary {
            padding: 14px 38px;
            border-radius: 50px;
            font-size: 1.05rem;
            font-weight: 600;
            background: linear-gradient(135deg, var(--secondary), #f97316);
            color: #fff;
            box-shadow: 0 8px 28px rgba(245, 158, 11, 0.35);
            transition: var(--transition);
        }

        .cta-btn-primary:hover {
            transform: translateY(-3px);
            box-shadow: 0 12px 40px rgba(245, 158, 11, 0.45);
        }

        .cta-btn-secondary {
            padding: 14px 38px;
            border-radius: 50px;
            font-size: 1.05rem;
            font-weight: 600;
            background: rgba(255, 255, 255, 0.08);
            backdrop-filter: blur(8px);
            border: 1px solid rgba(255, 255, 255, 0.18);
            color: #fff;
            transition: var(--transition);
        }

        .cta-btn-secondary:hover {
            background: rgba(255, 255, 255, 0.16);
            border-color: rgba(255, 255, 255, 0.3);
        }

        /* Footer */
        .site-footer {
            background: #0b1424;
            color: rgba(255, 255, 255, 0.7);
            padding: 60px 0 28px;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 40px;
            margin-bottom: 40px;
        }

        @media (max-width: 768px) {
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 32px 24px;
            }
        }

        @media (max-width: 480px) {
            .footer-grid {
                grid-template-columns: 1fr;
            }
        }

        .footer-brand .logo-text {
            font-size: 1.2rem;
            margin-bottom: 12px;
            display: inline-block;
        }

        .footer-brand p {
            font-size: 0.88rem;
            line-height: 1.7;
            max-width: 300px;
        }

        .footer-col h4 {
            font-size: 0.92rem;
            font-weight: 600;
            color: #fff;
            margin-bottom: 16px;
        }

        .footer-col ul li {
            margin-bottom: 10px;
        }

        .footer-col ul li a {
            font-size: 0.85rem;
            color: rgba(255, 255, 255, 0.55);
            transition: var(--transition);
        }

        .footer-col ul li a:hover {
            color: #fff;
            padding-left: 4px;
        }

        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.06);
            padding-top: 24px;
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            justify-content: space-between;
            gap: 12px;
            font-size: 0.82rem;
            color: rgba(255, 255, 255, 0.4);
        }

        .footer-bottom a {
            color: rgba(255, 255, 255, 0.5);
        }

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

        .footer-social {
            display: flex;
            gap: 14px;
        }

        .footer-social a {
            width: 36px;
            height: 36px;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.06);
            display: flex;
            align-items: center;
            justify-content: center;
            color: rgba(255, 255, 255, 0.5);
            font-size: 0.9rem;
            transition: var(--transition);
        }

        .footer-social a:hover {
            background: var(--primary);
            color: #fff;
            transform: translateY(-2px);
        }

        /* Back to Top */
        .back-to-top {
            position: fixed;
            bottom: 30px;
            right: 30px;
            z-index: 999;
            width: 46px;
            height: 46px;
            border-radius: 50%;
            background: var(--primary);
            color: #fff;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.1rem;
            box-shadow: 0 4px 20px rgba(26, 86, 219, 0.3);
            opacity: 0;
            pointer-events: none;
            transform: translateY(20px);
            transition: var(--transition);
        }

        .back-to-top.visible {
            opacity: 1;
            pointer-events: auto;
            transform: translateY(0);
        }

        .back-to-top:hover {
            background: var(--primary-dark);
            transform: translateY(-4px);
            box-shadow: 0 8px 30px rgba(26, 86, 219, 0.4);
        }

        /* Scrollbar */
        ::-webkit-scrollbar {
            width: 6px;
        }

        ::-webkit-scrollbar-track {
            background: var(--bg-body);
        }

        ::-webkit-scrollbar-thumb {
            background: var(--text-muted);
            border-radius: 8px;
        }

        ::-webkit-scrollbar-thumb:hover {
            background: var(--text-secondary);
        }

        /* Selection */
        ::selection {
            background: var(--primary);
            color: #fff;
        }

        /* Loading shimmer */
        .shimmer {
            background: linear-gradient(90deg, var(--border-color) 25%, #f1f5f9 50%, var(--border-color) 75%);
            background-size: 200% 100%;
            animation: shimmer 1.5s infinite;
        }

        @keyframes shimmer {
            0% {
                background-position: 200% 0;
            }
            100% {
                background-position: -200% 0;
            }
        }

        /* Focus visible */
        a:focus-visible,
        button:focus-visible,
        input:focus-visible {
            outline: 2px solid var(--primary);
            outline-offset: 2px;
            border-radius: var(--radius-xs);
        }

        /* Active state for buttons */
        .hero-btn-primary:active,
        .cta-btn-primary:active,
        .nav-cta:active {
            transform: scale(0.97);
        }

        /* Breadcrumb (for inner pages, included for consistency) */
        .breadcrumb {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 8px;
            font-size: 0.85rem;
            color: var(--text-muted);
            padding: 16px 0;
        }

        .breadcrumb a {
            color: var(--text-secondary);
        }

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

        .breadcrumb span {
            color: var(--text-primary);
        }

        .breadcrumb i {
            font-size: 0.6rem;
            color: var(--text-muted);
        }

        /* Responsive fine-tune */
        @media (max-width: 480px) {
            .hero-stats {
                gap: 20px 28px;
            }

            .hero-stat-number {
                font-size: 1.4rem;
            }

            .stats-number {
                font-size: 1.8rem;
            }

            .features-grid {
                grid-template-columns: 1fr;
            }

            .news-grid {
                grid-template-columns: 1fr;
            }

            .category-card-grid {
                grid-template-columns: 1fr;
            }

            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
        }

        @media (min-width: 481px) and (max-width: 768px) {
            .features-grid {
                grid-template-columns: 1fr 1fr;
            }

            .news-grid {
                grid-template-columns: 1fr 1fr;
            }

            .category-card-grid {
                grid-template-columns: 1fr 1fr;
            }
        }

        /* Smooth hover for all interactive */
        .interactive {
            cursor: pointer;
            transition: var(--transition);
        }

        .interactive:hover {
            transform: translateY(-2px);
        }

        /* Extra spacing utility */
        .mt-section {
            margin-top: 80px;
        }
        @media (max-width: 768px) {
            .mt-section {
                margin-top: 56px;
            }
        }

/* roulang page: article */
:root {
            --primary: #3b82f6;
            --primary-dark: #2563eb;
            --secondary: #8b5cf6;
            --accent: #f59e0b;
            --bg: #f8fafc;
            --bg-card: #ffffff;
            --text: #1e293b;
            --text-weak: #64748b;
            --border: #e2e8f0;
            --radius: 16px;
            --radius-sm: 10px;
            --shadow: 0 4px 24px rgba(0,0,0,0.06);
            --shadow-hover: 0 12px 40px rgba(59,130,246,0.12);
            --transition: 0.3s cubic-bezier(0.4,0,0.2,1);
            --font: 'Inter', system-ui, -apple-system, 'Segoe UI', Roboto, 'Helvetica Neue', sans-serif;
        }
        * { margin:0; padding:0; box-sizing:border-box; }
        body { font-family:var(--font); background:var(--bg); color:var(--text); line-height:1.7; -webkit-font-smoothing:antialiased; }
        a { color:inherit; text-decoration:none; transition:color var(--transition); }
        img { max-width:100%; height:auto; display:block; border-radius:var(--radius-sm); }
        button, input, textarea { font:inherit; }
        .container { max-width:1200px; margin:0 auto; padding:0 24px; }

        .site-header { position:sticky; top:0; z-index:100; background:rgba(255,255,255,0.85); backdrop-filter:blur(20px) saturate(180%); -webkit-backdrop-filter:blur(20px) saturate(180%); border-bottom:1px solid rgba(226,232,240,0.6); }
        .header-inner { display:flex; align-items:center; justify-content:space-between; padding:16px 0; gap:20px; }
        .logo-text { font-size:1.5rem; font-weight:700; background:linear-gradient(135deg,#3b82f6,#8b5cf6); -webkit-background-clip:text; -webkit-text-fill-color:transparent; background-clip:text; display:flex; align-items:center; gap:10px; letter-spacing:-0.5px; }
        .logo-text i { -webkit-text-fill-color:initial; color:#3b82f6; font-size:1.4rem; }
        .nav-list { display:flex; align-items:center; gap:8px; }
        .nav-list a { padding:10px 20px; border-radius:999px; font-weight:500; font-size:0.95rem; color:var(--text-weak); transition:all var(--transition); white-space:nowrap; }
        .nav-list a:hover { color:var(--primary); background:rgba(59,130,246,0.08); }
        .nav-list a.active { color:#fff; background:linear-gradient(135deg,#3b82f6,#8b5cf6); box-shadow:0 4px 16px rgba(59,130,246,0.25); }
        .nav-list a.mobile-cta { display:none; }
        .nav-cta { display:inline-flex; align-items:center; gap:6px; padding:10px 24px; border-radius:999px; background:linear-gradient(135deg,#3b82f6,#8b5cf6); color:#fff; font-weight:600; font-size:0.95rem; transition:all var(--transition); box-shadow:0 4px 16px rgba(59,130,246,0.3); white-space:nowrap; }
        .nav-cta:hover { transform:translateY(-2px); box-shadow:0 8px 28px rgba(59,130,246,0.35); }
        .mobile-toggle { display:none; flex-direction:column; gap:5px; background:none; border:none; cursor:pointer; padding:6px; border-radius:8px; transition:background var(--transition); }
        .mobile-toggle span { display:block; width:26px; height:2.5px; background:var(--text); border-radius:4px; transition:all var(--transition); }
        .mobile-toggle:hover { background:rgba(0,0,0,0.04); }

        .page-banner { position:relative; padding:100px 0 80px; text-align:center; background:linear-gradient(135deg, #eff6ff 0%, #f5f3ff 100%); overflow:hidden; }
        .page-banner::before { content:''; position:absolute; inset:0; background:url('/assets/images/backpic/back-2.png') center/cover no-repeat; opacity:0.08; }
        .page-banner h1 { font-size:2.6rem; font-weight:800; background:linear-gradient(135deg,#1e293b,#3b82f6); -webkit-background-clip:text; -webkit-text-fill-color:transparent; background-clip:text; max-width:800px; margin:0 auto 16px; line-height:1.25; }
        .page-banner .breadcrumb { display:flex; align-items:center; justify-content:center; gap:10px; font-size:0.95rem; color:var(--text-weak); }
        .page-banner .breadcrumb a { color:var(--primary); font-weight:500; }
        .page-banner .breadcrumb a:hover { color:var(--primary-dark); }
        .page-banner .breadcrumb i { font-size:0.7rem; color:var(--text-weak); }

        .article-section { padding:60px 0 80px; }
        .article-wrapper { max-width:820px; margin:0 auto; background:var(--bg-card); border-radius:var(--radius); box-shadow:var(--shadow); padding:48px 56px; }
        .article-meta { display:flex; flex-wrap:wrap; gap:16px 24px; margin-bottom:32px; padding-bottom:24px; border-bottom:1px solid var(--border); font-size:0.9rem; color:var(--text-weak); }
        .article-meta span { display:flex; align-items:center; gap:8px; }
        .article-meta i { width:16px; color:var(--primary); }
        .article-meta .badge { display:inline-block; padding:4px 14px; border-radius:999px; background:rgba(59,130,246,0.1); color:var(--primary); font-size:0.8rem; font-weight:600; }
        .article-body { font-size:1.05rem; line-height:1.9; color:#334155; }
        .article-body p { margin-bottom:1.4em; }
        .article-body h2 { font-size:1.5rem; font-weight:700; margin:1.6em 0 0.6em; color:var(--text); }
        .article-body h3 { font-size:1.2rem; font-weight:600; margin:1.4em 0 0.5em; color:var(--text); }
        .article-body ul, .article-body ol { margin:1em 0; padding-left:1.5em; }
        .article-body li { margin-bottom:0.5em; }
        .article-body a { color:var(--primary); text-decoration:underline; text-underline-offset:2px; }
        .article-body a:hover { color:var(--primary-dark); }
        .article-body blockquote { border-left:4px solid var(--primary); padding:12px 20px; margin:1.5em 0; background:rgba(59,130,246,0.04); border-radius:0 var(--radius-sm) var(--radius-sm) 0; font-style:italic; color:#475569; }
        .article-body img { margin:1.5em 0; border-radius:var(--radius-sm); }
        .article-body .article-cover { margin-bottom:2em; border-radius:var(--radius-sm); overflow:hidden; }

        .article-not-found { text-align:center; padding:80px 40px; }
        .article-not-found i { font-size:4rem; color:var(--text-weak); margin-bottom:24px; opacity:0.4; }
        .article-not-found h2 { font-size:1.8rem; font-weight:700; margin-bottom:12px; }
        .article-not-found p { color:var(--text-weak); margin-bottom:24px; }
        .article-not-found .btn-back { display:inline-flex; align-items:center; gap:8px; padding:12px 32px; border-radius:999px; background:var(--primary); color:#fff; font-weight:600; transition:all var(--transition); }
        .article-not-found .btn-back:hover { background:var(--primary-dark); transform:translateY(-2px); box-shadow:0 8px 24px rgba(59,130,246,0.25); }

        .related-section { padding:0 0 60px; }
        .related-grid { display:grid; grid-template-columns:repeat(3,1fr); gap:24px; margin-top:28px; }
        .related-card { background:var(--bg-card); border-radius:var(--radius-sm); box-shadow:var(--shadow); overflow:hidden; transition:all var(--transition); }
        .related-card:hover { transform:translateY(-4px); box-shadow:var(--shadow-hover); }
        .related-card img { width:100%; height:180px; object-fit:cover; }
        .related-card .card-body { padding:18px 20px; }
        .related-card .card-body h4 { font-size:1rem; font-weight:600; margin-bottom:6px; display:-webkit-box; -webkit-line-clamp:2; -webkit-box-orient:vertical; overflow:hidden; }
        .related-card .card-body p { font-size:0.85rem; color:var(--text-weak); display:-webkit-box; -webkit-line-clamp:2; -webkit-box-orient:vertical; overflow:hidden; }

        .site-footer { background:#0f172a; color:#cbd5e1; padding:56px 0 0; }
        .footer-grid { display:grid; grid-template-columns:2fr 1fr 1fr 1fr; gap:40px; }
        .footer-brand .logo-text { font-size:1.4rem; margin-bottom:12px; }
        .footer-brand p { font-size:0.9rem; line-height:1.7; max-width:320px; color:#94a3b8; }
        .footer-col h4 { font-size:1rem; font-weight:600; color:#f1f5f9; margin-bottom:16px; }
        .footer-col ul { list-style:none; }
        .footer-col ul li { margin-bottom:10px; }
        .footer-col ul li a { font-size:0.9rem; color:#94a3b8; transition:color var(--transition); }
        .footer-col ul li a:hover { color:#60a5fa; }
        .footer-bottom { display:flex; align-items:center; justify-content:space-between; flex-wrap:wrap; gap:12px; padding:24px 0; margin-top:32px; border-top:1px solid rgba(255,255,255,0.06); font-size:0.85rem; color:#64748b; }
        .footer-social { display:flex; gap:16px; }
        .footer-social a { display:flex; align-items:center; justify-content:center; width:38px; height:38px; border-radius:50%; background:rgba(255,255,255,0.06); color:#94a3b8; transition:all var(--transition); }
        .footer-social a:hover { background:rgba(59,130,246,0.15); color:#60a5fa; transform:translateY(-2px); }

        @media (max-width:1024px) {
            .article-wrapper { padding:36px 32px; }
            .related-grid { grid-template-columns:repeat(2,1fr); }
            .footer-grid { grid-template-columns:1fr 1fr; }
        }
        @media (max-width:768px) {
            .header-inner { padding:14px 0; }
            .nav-list { display:none; position:absolute; top:100%; left:0; right:0; background:rgba(255,255,255,0.98); backdrop-filter:blur(20px); flex-direction:column; padding:20px 24px; gap:12px; border-bottom:1px solid var(--border); box-shadow:0 16px 40px rgba(0,0,0,0.06); }
            .nav-list.open { display:flex; }
            .nav-list a { width:100%; text-align:center; padding:14px 20px; }
            .nav-list a.mobile-cta { display:flex; justify-content:center; background:linear-gradient(135deg,#3b82f6,#8b5cf6); color:#fff; border-radius:999px; font-weight:600; margin-top:8px; }
            .nav-cta { display:none; }
            .mobile-toggle { display:flex; }
            .page-banner { padding:60px 0 50px; }
            .page-banner h1 { font-size:1.8rem; }
            .article-wrapper { padding:28px 20px; }
            .article-meta { gap:12px; }
            .related-grid { grid-template-columns:1fr; }
            .footer-grid { grid-template-columns:1fr; gap:32px; }
            .footer-bottom { flex-direction:column; text-align:center; }
        }
        @media (max-width:520px) {
            .container { padding:0 16px; }
            .page-banner h1 { font-size:1.5rem; }
            .article-wrapper { padding:20px 16px; }
            .article-body { font-size:0.98rem; }
        }

/* roulang page: category1 */
:root {
            --primary: #3b82f6;
            --primary-dark: #2563eb;
            --primary-light: #60a5fa;
            --secondary: #8b5cf6;
            --secondary-light: #a78bfa;
            --accent: #f59e0b;
            --bg-dark: #0f172a;
            --bg-card: #1e293b;
            --bg-section: #f8fafc;
            --text-primary: #1e293b;
            --text-secondary: #64748b;
            --text-light: #94a3b8;
            --border-color: #e2e8f0;
            --radius: 16px;
            --radius-sm: 10px;
            --shadow: 0 4px 24px rgba(0, 0, 0, 0.06);
            --shadow-hover: 0 12px 40px rgba(0, 0, 0, 0.10);
            --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
        }

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

        html {
            scroll-behavior: smooth;
            -webkit-font-smoothing: antialiased;
        }

        body {
            font-family: 'Inter', system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', sans-serif;
            color: var(--text-primary);
            background: #ffffff;
            line-height: 1.7;
        }

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

        a {
            text-decoration: none;
            color: inherit;
            transition: var(--transition);
        }

        button {
            cursor: pointer;
            border: none;
            background: none;
            font: inherit;
        }

        input,
        textarea {
            font: inherit;
            border: none;
            outline: none;
        }

        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 24px;
        }

        @media (max-width: 768px) {
            .container {
                padding: 0 16px;
            }
        }

        /* ===== Header & Nav ===== */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            background: rgba(15, 23, 42, 0.92);
            backdrop-filter: blur(20px);
            -webkit-backdrop-filter: blur(20px);
            border-bottom: 1px solid rgba(255, 255, 255, 0.06);
            transition: var(--transition);
        }

        .site-header .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 72px;
        }

        .logo-text {
            font-size: 1.35rem;
            font-weight: 700;
            display: flex;
            align-items: center;
            gap: 8px;
            background: linear-gradient(135deg, #60a5fa, #a78bfa);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            letter-spacing: -0.3px;
        }

        .logo-text i {
            -webkit-text-fill-color: initial;
            color: #60a5fa;
            font-size: 1.4rem;
        }

        .nav-list {
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .nav-list a {
            padding: 8px 20px;
            border-radius: 100px;
            font-size: 0.95rem;
            font-weight: 500;
            color: rgba(255, 255, 255, 0.7);
            transition: var(--transition);
            position: relative;
        }

        .nav-list a:hover {
            color: #ffffff;
            background: rgba(255, 255, 255, 0.08);
        }

        .nav-list a.active {
            color: #ffffff;
            background: rgba(96, 165, 250, 0.18);
            box-shadow: 0 0 20px rgba(96, 165, 250, 0.08);
        }

        .nav-list a.active::after {
            content: '';
            position: absolute;
            bottom: 2px;
            left: 50%;
            transform: translateX(-50%);
            width: 20px;
            height: 3px;
            background: linear-gradient(90deg, #60a5fa, #a78bfa);
            border-radius: 4px;
        }

        .nav-list .mobile-cta {
            display: none;
        }

        .nav-cta {
            padding: 10px 28px;
            border-radius: 100px;
            background: linear-gradient(135deg, #3b82f6, #8b5cf6);
            color: #fff;
            font-weight: 600;
            font-size: 0.95rem;
            transition: var(--transition);
            box-shadow: 0 4px 16px rgba(59, 130, 246, 0.30);
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }

        .nav-cta:hover {
            transform: translateY(-2px);
            box-shadow: 0 8px 28px rgba(59, 130, 246, 0.40);
        }

        .mobile-toggle {
            display: none;
            flex-direction: column;
            gap: 5px;
            padding: 6px;
            background: rgba(255, 255, 255, 0.06);
            border-radius: 8px;
            width: 42px;
            height: 42px;
            align-items: center;
            justify-content: center;
        }

        .mobile-toggle span {
            display: block;
            width: 22px;
            height: 2.5px;
            background: rgba(255, 255, 255, 0.85);
            border-radius: 4px;
            transition: var(--transition);
        }

        .mobile-toggle.open span:nth-child(1) {
            transform: rotate(45deg) translate(5px, 5px);
        }
        .mobile-toggle.open span:nth-child(2) {
            opacity: 0;
        }
        .mobile-toggle.open span:nth-child(3) {
            transform: rotate(-45deg) translate(5px, -5px);
        }

        @media (max-width: 768px) {
            .nav-list {
                position: fixed;
                top: 72px;
                left: 0;
                right: 0;
                background: rgba(15, 23, 42, 0.98);
                backdrop-filter: blur(20px);
                flex-direction: column;
                padding: 20px 24px 32px;
                gap: 6px;
                transform: translateY(-120%);
                opacity: 0;
                transition: var(--transition);
                border-bottom: 1px solid rgba(255, 255, 255, 0.06);
                pointer-events: none;
            }

            .nav-list.open {
                transform: translateY(0);
                opacity: 1;
                pointer-events: all;
            }

            .nav-list a {
                width: 100%;
                padding: 14px 20px;
                border-radius: 12px;
                font-size: 1.05rem;
            }

            .nav-list a.active::after {
                display: none;
            }

            .nav-list .mobile-cta {
                display: flex;
                margin-top: 12px;
                background: linear-gradient(135deg, #3b82f6, #8b5cf6);
                color: #fff;
                font-weight: 600;
                justify-content: center;
                border-radius: 100px;
                padding: 14px 20px;
            }

            .nav-cta {
                display: none;
            }

            .mobile-toggle {
                display: flex;
            }
        }

        /* ===== Footer ===== */
        .site-footer {
            background: var(--bg-dark);
            color: rgba(255, 255, 255, 0.8);
            padding: 60px 0 30px;
            border-top: 1px solid rgba(255, 255, 255, 0.05);
        }

        .site-footer .footer-grid {
            display: grid;
            grid-template-columns: 1.8fr 1fr 1fr 1fr;
            gap: 40px;
            margin-bottom: 40px;
        }

        .site-footer .footer-brand p {
            color: rgba(255, 255, 255, 0.55);
            font-size: 0.95rem;
            line-height: 1.7;
            margin-top: 16px;
            max-width: 340px;
        }

        .site-footer .footer-col h4 {
            color: #ffffff;
            font-size: 1rem;
            font-weight: 600;
            margin-bottom: 18px;
            letter-spacing: 0.3px;
        }

        .site-footer .footer-col ul {
            list-style: none;
            display: flex;
            flex-direction: column;
            gap: 12px;
        }

        .site-footer .footer-col ul a {
            color: rgba(255, 255, 255, 0.55);
            font-size: 0.92rem;
            transition: var(--transition);
        }

        .site-footer .footer-col ul a:hover {
            color: #60a5fa;
            padding-left: 4px;
        }

        .footer-bottom {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding-top: 28px;
            border-top: 1px solid rgba(255, 255, 255, 0.06);
            font-size: 0.88rem;
            color: rgba(255, 255, 255, 0.4);
        }

        .footer-social {
            display: flex;
            gap: 16px;
        }

        .footer-social a {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 38px;
            height: 38px;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.06);
            color: rgba(255, 255, 255, 0.5);
            font-size: 1.1rem;
            transition: var(--transition);
        }

        .footer-social a:hover {
            background: rgba(96, 165, 250, 0.2);
            color: #60a5fa;
            transform: translateY(-2px);
        }

        @media (max-width: 768px) {
            .site-footer .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 32px 24px;
            }
            .site-footer .footer-brand {
                grid-column: 1 / -1;
            }
            .footer-bottom {
                flex-direction: column;
                gap: 16px;
                text-align: center;
            }
        }

        @media (max-width: 520px) {
            .site-footer .footer-grid {
                grid-template-columns: 1fr;
                gap: 28px;
            }
        }

        /* ===== Page Banner ===== */
        .page-banner {
            padding: 140px 0 80px;
            background: linear-gradient(135deg, #0f172a 0%, #1e293b 50%, #0f172a 100%);
            position: relative;
            overflow: hidden;
            min-height: 380px;
            display: flex;
            align-items: center;
        }

        .page-banner::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-2.png') center/cover no-repeat;
            opacity: 0.15;
            mix-blend-mode: overlay;
        }

        .page-banner::after {
            content: '';
            position: absolute;
            top: -50%;
            right: -20%;
            width: 600px;
            height: 600px;
            background: radial-gradient(circle, rgba(96, 165, 250, 0.10), transparent 70%);
            border-radius: 50%;
            pointer-events: none;
        }

        .page-banner .banner-content {
            position: relative;
            z-index: 2;
            max-width: 800px;
        }

        .page-banner .banner-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: rgba(96, 165, 250, 0.15);
            border: 1px solid rgba(96, 165, 250, 0.20);
            padding: 6px 18px;
            border-radius: 100px;
            font-size: 0.85rem;
            color: #93c5fd;
            font-weight: 500;
            margin-bottom: 20px;
            backdrop-filter: blur(4px);
        }

        .page-banner h1 {
            font-size: 3.2rem;
            font-weight: 800;
            color: #ffffff;
            line-height: 1.2;
            letter-spacing: -1px;
            margin-bottom: 20px;
        }

        .page-banner h1 span {
            background: linear-gradient(135deg, #60a5fa, #a78bfa);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }

        .page-banner p {
            font-size: 1.15rem;
            color: rgba(255, 255, 255, 0.65);
            max-width: 600px;
            line-height: 1.8;
        }

        @media (max-width: 768px) {
            .page-banner {
                padding: 110px 0 60px;
                min-height: 300px;
            }
            .page-banner h1 {
                font-size: 2.2rem;
            }
            .page-banner p {
                font-size: 1rem;
            }
        }

        @media (max-width: 520px) {
            .page-banner h1 {
                font-size: 1.8rem;
            }
        }

        /* ===== Section Common ===== */
        .section {
            padding: 80px 0;
        }

        .section-label {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            font-size: 0.85rem;
            font-weight: 600;
            color: var(--primary);
            text-transform: uppercase;
            letter-spacing: 1.2px;
            margin-bottom: 12px;
        }

        .section-label::before {
            content: '';
            width: 28px;
            height: 2.5px;
            background: linear-gradient(90deg, var(--primary), var(--secondary));
            border-radius: 4px;
        }

        .section-title {
            font-size: 2.4rem;
            font-weight: 800;
            color: var(--text-primary);
            line-height: 1.25;
            margin-bottom: 16px;
            letter-spacing: -0.5px;
        }

        .section-subtitle {
            font-size: 1.1rem;
            color: var(--text-secondary);
            max-width: 640px;
            line-height: 1.7;
        }

        .section-title.center,
        .section-subtitle.center {
            text-align: center;
            margin-left: auto;
            margin-right: auto;
        }

        @media (max-width: 768px) {
            .section {
                padding: 56px 0;
            }
            .section-title {
                font-size: 1.8rem;
            }
            .section-subtitle {
                font-size: 1rem;
            }
        }

        @media (max-width: 520px) {
            .section-title {
                font-size: 1.5rem;
            }
        }

        /* ===== Cards ===== */
        .card-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 28px;
            margin-top: 40px;
        }

        .card-item {
            background: #ffffff;
            border-radius: var(--radius);
            overflow: hidden;
            box-shadow: var(--shadow);
            border: 1px solid var(--border-color);
            transition: var(--transition);
        }

        .card-item:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-hover);
        }

        .card-item .card-img {
            width: 100%;
            height: 200px;
            object-fit: cover;
            display: block;
        }

        .card-item .card-body {
            padding: 24px 22px 28px;
        }

        .card-item .card-tag {
            display: inline-block;
            padding: 4px 14px;
            border-radius: 100px;
            font-size: 0.78rem;
            font-weight: 600;
            background: rgba(59, 130, 246, 0.08);
            color: var(--primary);
            margin-bottom: 12px;
        }

        .card-item .card-title {
            font-size: 1.2rem;
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: 10px;
            line-height: 1.4;
        }

        .card-item .card-desc {
            font-size: 0.95rem;
            color: var(--text-secondary);
            line-height: 1.7;
        }

        .card-item .card-link {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            margin-top: 16px;
            font-weight: 600;
            color: var(--primary);
            font-size: 0.92rem;
        }

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

        @media (max-width: 900px) {
            .card-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 20px;
            }
        }

        @media (max-width: 520px) {
            .card-grid {
                grid-template-columns: 1fr;
                gap: 18px;
            }
            .card-item .card-img {
                height: 180px;
            }
        }

        /* ===== Steps ===== */
        .steps-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
            margin-top: 44px;
            counter-reset: step-counter;
        }

        .step-card {
            background: #ffffff;
            border-radius: var(--radius);
            padding: 32px 24px;
            border: 1px solid var(--border-color);
            box-shadow: var(--shadow);
            text-align: center;
            transition: var(--transition);
            position: relative;
        }

        .step-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-hover);
        }

        .step-card .step-number {
            width: 52px;
            height: 52px;
            border-radius: 50%;
            background: linear-gradient(135deg, rgba(59, 130, 246, 0.10), rgba(139, 92, 246, 0.10));
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.4rem;
            font-weight: 800;
            color: var(--primary);
            margin: 0 auto 18px;
            border: 1.5px solid rgba(59, 130, 246, 0.15);
        }

        .step-card h4 {
            font-size: 1.1rem;
            font-weight: 700;
            margin-bottom: 10px;
            color: var(--text-primary);
        }

        .step-card p {
            font-size: 0.92rem;
            color: var(--text-secondary);
            line-height: 1.6;
        }

        @media (max-width: 900px) {
            .steps-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 18px;
            }
        }

        @media (max-width: 520px) {
            .steps-grid {
                grid-template-columns: 1fr;
                gap: 16px;
            }
            .step-card {
                padding: 24px 18px;
            }
        }

        /* ===== FAQ ===== */
        .faq-list {
            max-width: 800px;
            margin: 40px auto 0;
            display: flex;
            flex-direction: column;
            gap: 12px;
        }

        .faq-item {
            background: #ffffff;
            border: 1px solid var(--border-color);
            border-radius: var(--radius-sm);
            overflow: hidden;
            transition: var(--transition);
            box-shadow: 0 2px 8px rgba(0, 0, 0, 0.02);
        }

        .faq-item:hover {
            border-color: rgba(59, 130, 246, 0.20);
        }

        .faq-question {
            width: 100%;
            padding: 18px 24px;
            display: flex;
            justify-content: space-between;
            align-items: center;
            font-size: 1rem;
            font-weight: 600;
            color: var(--text-primary);
            background: transparent;
            text-align: left;
            gap: 16px;
        }

        .faq-question .faq-icon {
            font-size: 1rem;
            color: var(--primary);
            transition: var(--transition);
            flex-shrink: 0;
        }

        .faq-item.open .faq-question .faq-icon {
            transform: rotate(180deg);
        }

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.4s ease, padding 0.3s ease;
            padding: 0 24px;
            color: var(--text-secondary);
            font-size: 0.95rem;
            line-height: 1.7;
        }

        .faq-item.open .faq-answer {
            max-height: 300px;
            padding: 0 24px 20px;
        }

        @media (max-width: 520px) {
            .faq-question {
                padding: 14px 16px;
                font-size: 0.95rem;
            }
            .faq-answer {
                padding: 0 16px;
                font-size: 0.9rem;
            }
            .faq-item.open .faq-answer {
                padding: 0 16px 16px;
            }
        }

        /* ===== CTA ===== */
        .cta-section {
            background: linear-gradient(135deg, #0f172a 0%, #1e293b 100%);
            padding: 80px 0;
            text-align: center;
            position: relative;
            overflow: hidden;
        }

        .cta-section::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            background: url('/assets/images/backpic/back-3.png') center/cover no-repeat;
            opacity: 0.06;
            mix-blend-mode: overlay;
        }

        .cta-section .container {
            position: relative;
            z-index: 2;
        }

        .cta-section h2 {
            font-size: 2.6rem;
            font-weight: 800;
            color: #ffffff;
            margin-bottom: 16px;
            letter-spacing: -0.5px;
        }

        .cta-section p {
            font-size: 1.1rem;
            color: rgba(255, 255, 255, 0.6);
            max-width: 560px;
            margin: 0 auto 32px;
            line-height: 1.7;
        }

        .cta-section .cta-btn {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            padding: 16px 42px;
            border-radius: 100px;
            background: linear-gradient(135deg, #3b82f6, #8b5cf6);
            color: #fff;
            font-weight: 700;
            font-size: 1.1rem;
            box-shadow: 0 8px 32px rgba(59, 130, 246, 0.35);
            transition: var(--transition);
        }

        .cta-section .cta-btn:hover {
            transform: translateY(-3px);
            box-shadow: 0 12px 40px rgba(59, 130, 246, 0.45);
        }

        @media (max-width: 768px) {
            .cta-section {
                padding: 56px 0;
            }
            .cta-section h2 {
                font-size: 1.9rem;
            }
            .cta-section p {
                font-size: 1rem;
            }
            .cta-section .cta-btn {
                padding: 14px 32px;
                font-size: 1rem;
            }
        }

        /* ===== Content list ===== */
        .content-list {
            margin-top: 40px;
            display: flex;
            flex-direction: column;
            gap: 16px;
        }

        .content-row {
            display: flex;
            align-items: center;
            gap: 20px;
            padding: 20px 24px;
            background: #ffffff;
            border-radius: var(--radius-sm);
            border: 1px solid var(--border-color);
            box-shadow: 0 2px 8px rgba(0, 0, 0, 0.02);
            transition: var(--transition);
        }

        .content-row:hover {
            border-color: rgba(59, 130, 246, 0.15);
            box-shadow: var(--shadow);
            transform: translateX(4px);
        }

        .content-row .cr-index {
            width: 36px;
            height: 36px;
            border-radius: 50%;
            background: rgba(59, 130, 246, 0.08);
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 700;
            font-size: 0.9rem;
            color: var(--primary);
            flex-shrink: 0;
        }

        .content-row .cr-info {
            flex: 1;
        }

        .content-row .cr-info h4 {
            font-size: 1rem;
            font-weight: 600;
            color: var(--text-primary);
            margin-bottom: 4px;
        }

        .content-row .cr-info p {
            font-size: 0.9rem;
            color: var(--text-secondary);
        }

        .content-row .cr-badge {
            padding: 4px 14px;
            border-radius: 100px;
            font-size: 0.78rem;
            font-weight: 600;
            background: rgba(59, 130, 246, 0.08);
            color: var(--primary);
            flex-shrink: 0;
        }

        @media (max-width: 520px) {
            .content-row {
                flex-direction: column;
                align-items: flex-start;
                gap: 12px;
                padding: 16px 18px;
            }
            .content-row .cr-badge {
                align-self: flex-start;
            }
        }

        /* ===== Dark section variant ===== */
        .section-dark {
            background: var(--bg-section);
        }

        /* ===== Utility spacing ===== */
        .mt-1 { margin-top: 4px; }
        .mt-2 { margin-top: 8px; }
        .mt-3 { margin-top: 12px; }
        .mt-4 { margin-top: 16px; }
        .mt-5 { margin-top: 20px; }
        .mt-6 { margin-top: 24px; }
        .mt-8 { margin-top: 32px; }
        .mt-10 { margin-top: 40px; }
        .mb-1 { margin-bottom: 4px; }
        .mb-2 { margin-bottom: 8px; }
        .mb-3 { margin-bottom: 12px; }
        .mb-4 { margin-bottom: 16px; }
        .mb-6 { margin-bottom: 24px; }
        .mb-8 { margin-bottom: 32px; }
        .gap-2 { gap: 8px; }
        .gap-3 { gap: 12px; }
        .gap-4 { gap: 16px; }
        .flex { display: flex; }
        .flex-wrap { flex-wrap: wrap; }
        .items-center { align-items: center; }
        .justify-between { justify-content: space-between; }
        .text-center { text-align: center; }