/* roulang page: index */
/* ===== Design Variables ===== */
        :root {
            --primary: #0f1d35;
            --primary-light: #1a2d4a;
            --primary-dark: #0a1628;
            --accent: #f5b342;
            --accent-hover: #e8a432;
            --accent-light: #fdebd0;
            --blue-accent: #2b7be4;
            --blue-accent-hover: #1a6ad4;
            --bg-white: #ffffff;
            --bg-light: #f7f9fc;
            --bg-dark: #0f1d35;
            --text-primary: #1a1a2e;
            --text-secondary: #4a4a6a;
            --text-muted: #8888a0;
            --text-white: #ffffff;
            --text-accent: #f5b342;
            --border-color: #e8ecf2;
            --border-light: #f0f2f6;
            --radius-sm: 8px;
            --radius-md: 14px;
            --radius-lg: 20px;
            --radius-xl: 28px;
            --shadow-sm: 0 2px 8px rgba(15, 29, 53, 0.06);
            --shadow-md: 0 8px 30px rgba(15, 29, 53, 0.10);
            --shadow-lg: 0 20px 60px rgba(15, 29, 53, 0.14);
            --shadow-accent: 0 8px 30px rgba(245, 179, 66, 0.30);
            --spacing-xs: 6px;
            --spacing-sm: 12px;
            --spacing-md: 24px;
            --spacing-lg: 48px;
            --spacing-xl: 80px;
            --font-body: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, 'PingFang SC', 'Microsoft YaHei', sans-serif;
            --transition: 0.25s cubic-bezier(0.4, 0, 0.2, 1);
        }

        /* ===== Reset & Base ===== */
        *, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
        html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
        body {
            font-family: var(--font-body);
            font-size: 16px;
            line-height: 1.7;
            color: var(--text-primary);
            background: var(--bg-white);
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }
        a { color: var(--blue-accent); text-decoration: none; transition: color var(--transition); }
        a:hover { color: var(--blue-accent-hover); }
        img { max-width: 100%; height: auto; display: block; border-radius: var(--radius-sm); }
        button, input, select, textarea { font-family: inherit; font-size: inherit; }
        button { cursor: pointer; border: none; background: none; }
        ul, ol { list-style: none; }
        h1, h2, h3, h4, h5, h6 { line-height: 1.3; font-weight: 700; color: var(--primary); }
        h1 { font-size: clamp(2rem, 5vw, 3.2rem); }
        h2 { font-size: clamp(1.6rem, 3.5vw, 2.4rem); }
        h3 { font-size: clamp(1.2rem, 2.2vw, 1.5rem); }
        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 var(--spacing-md);
        }
        .section { padding: var(--spacing-xl) 0; }
        .section-title {
            text-align: center;
            margin-bottom: var(--spacing-lg);
        }
        .section-title h2 { position: relative; display: inline-block; }
        .section-title h2::after {
            content: '';
            display: block;
            width: 60px;
            height: 4px;
            background: var(--accent);
            border-radius: 4px;
            margin: 12px auto 0;
        }
        .section-title p {
            color: var(--text-secondary);
            max-width: 640px;
            margin: 12px auto 0;
            font-size: 1.05rem;
        }
        .text-center { text-align: center; }
        .sr-only { position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip: rect(0,0,0,0); border: 0; }

        /* ===== Buttons ===== */
        .btn {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 12px 28px;
            border-radius: 50px;
            font-weight: 600;
            font-size: 0.95rem;
            transition: all var(--transition);
            border: 2px solid transparent;
            white-space: nowrap;
        }
        .btn-primary {
            background: var(--accent);
            color: var(--primary-dark);
            border-color: var(--accent);
        }
        .btn-primary:hover {
            background: var(--accent-hover);
            border-color: var(--accent-hover);
            color: var(--primary-dark);
            transform: translateY(-2px);
            box-shadow: var(--shadow-accent);
        }
        .btn-outline {
            background: transparent;
            color: var(--text-white);
            border-color: rgba(255,255,255,0.5);
        }
        .btn-outline:hover {
            background: rgba(255,255,255,0.12);
            border-color: var(--text-white);
            color: var(--text-white);
            transform: translateY(-2px);
        }
        .btn-blue {
            background: var(--blue-accent);
            color: #fff;
            border-color: var(--blue-accent);
        }
        .btn-blue:hover {
            background: var(--blue-accent-hover);
            border-color: var(--blue-accent-hover);
            color: #fff;
            transform: translateY(-2px);
            box-shadow: 0 8px 24px rgba(43,123,228,0.30);
        }
        .btn-sm { padding: 8px 18px; font-size: 0.85rem; }
        .btn-lg { padding: 16px 36px; font-size: 1.05rem; }

        /* ===== Header & Navigation ===== */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            z-index: 1000;
            background: rgba(255,255,255,0.96);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border-bottom: 1px solid var(--border-light);
            transition: box-shadow var(--transition);
        }
        .site-header.scrolled { box-shadow: var(--shadow-sm); }
        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 70px;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 var(--spacing-md);
        }
        .site-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 1.35rem;
            font-weight: 800;
            color: var(--primary);
            letter-spacing: -0.3px;
        }
        .site-logo i {
            color: var(--accent);
            font-size: 1.6rem;
        }
        .site-logo span { background: linear-gradient(135deg, var(--primary) 40%, var(--blue-accent)); -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text; }
        .site-logo:hover { color: var(--primary); }
        .main-nav { display: flex; align-items: center; gap: 6px; }
        .main-nav a {
            display: flex; align-items: center; gap: 6px;
            padding: 8px 18px;
            border-radius: 50px;
            color: var(--text-secondary);
            font-weight: 500;
            font-size: 0.92rem;
            transition: all var(--transition);
            position: relative;
        }
        .main-nav a i { font-size: 0.85rem; opacity: 0.6; }
        .main-nav a:hover { color: var(--primary); background: var(--bg-light); }
        .main-nav a.active {
            color: var(--primary);
            background: var(--accent-light);
            font-weight: 600;
        }
        .main-nav a.active i { opacity: 1; color: var(--accent); }
        .nav-actions { display: flex; align-items: center; gap: 12px; }
        .nav-search {
            display: flex; align-items: center;
            background: var(--bg-light);
            border-radius: 50px;
            padding: 0 16px;
            height: 40px;
            border: 1px solid transparent;
            transition: all var(--transition);
        }
        .nav-search:focus-within {
            border-color: var(--accent);
            background: var(--bg-white);
            box-shadow: 0 0 0 4px rgba(245,179,66,0.12);
        }
        .nav-search i { color: var(--text-muted); font-size: 0.9rem; }
        .nav-search input {
            border: none;
            background: transparent;
            padding: 0 10px;
            width: 140px;
            height: 100%;
            outline: none;
            color: var(--text-primary);
            font-size: 0.9rem;
        }
        .nav-search input::placeholder { color: var(--text-muted); }
        .nav-cta { display: flex; align-items: center; gap: 8px; }
        .mobile-toggle { display: none; font-size: 1.5rem; color: var(--primary); padding: 4px; }

        /* ===== Hero ===== */
        .hero {
            position: relative;
            min-height: 95vh;
            display: flex;
            align-items: center;
            justify-content: center;
            text-align: center;
            padding: 120px var(--spacing-md) 80px;
            background: linear-gradient(135deg, var(--primary-dark) 0%, var(--primary-light) 60%, #1a2d5a 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: 0.28;
            z-index: 0;
        }
        .hero-overlay {
            position: absolute;
            inset: 0;
            background: radial-gradient(ellipse at center, rgba(15,29,53,0.20) 0%, rgba(10,22,40,0.70) 100%);
            z-index: 1;
        }
        .hero-content {
            position: relative;
            z-index: 2;
            max-width: 860px;
            color: var(--text-white);
        }
        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: rgba(255,255,255,0.10);
            backdrop-filter: blur(8px);
            -webkit-backdrop-filter: blur(8px);
            padding: 8px 20px;
            border-radius: 50px;
            font-size: 0.85rem;
            font-weight: 500;
            color: var(--accent);
            border: 1px solid rgba(255,255,255,0.12);
            margin-bottom: 24px;
            letter-spacing: 0.5px;
        }
        .hero-badge i { font-size: 0.75rem; }
        .hero h1 {
            color: var(--text-white);
            font-size: clamp(2.2rem, 5.5vw, 3.6rem);
            font-weight: 800;
            line-height: 1.2;
            margin-bottom: 20px;
            letter-spacing: -0.5px;
        }
        .hero h1 em { color: var(--accent); font-style: normal; }
        .hero p {
            font-size: clamp(1rem, 1.8vw, 1.2rem);
            color: rgba(255,255,255,0.80);
            max-width: 640px;
            margin: 0 auto 32px;
            line-height: 1.8;
        }
        .hero-actions {
            display: flex;
            flex-wrap: wrap;
            gap: 14px;
            justify-content: center;
        }
        .hero-stats {
            display: flex;
            flex-wrap: wrap;
            gap: 40px;
            justify-content: center;
            margin-top: 50px;
            padding-top: 40px;
            border-top: 1px solid rgba(255,255,255,0.10);
        }
        .hero-stat { text-align: center; }
        .hero-stat .num {
            font-size: 1.8rem;
            font-weight: 800;
            color: var(--accent);
            display: block;
        }
        .hero-stat .label {
            font-size: 0.85rem;
            color: rgba(255,255,255,0.60);
            margin-top: 4px;
        }

        /* ===== Features ===== */
        .features-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 28px;
        }
        .feature-card {
            background: var(--bg-white);
            border-radius: var(--radius-md);
            padding: 36px 28px;
            text-align: center;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border-light);
            transition: all var(--transition);
        }
        .feature-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-md);
            border-color: var(--accent-light);
        }
        .feature-icon {
            width: 64px;
            height: 64px;
            margin: 0 auto 18px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.6rem;
            color: var(--accent);
            background: var(--accent-light);
            transition: all var(--transition);
        }
        .feature-card:hover .feature-icon { background: var(--accent); color: var(--primary-dark); }
        .feature-card h3 { font-size: 1.15rem; margin-bottom: 10px; }
        .feature-card p { font-size: 0.92rem; color: var(--text-secondary); line-height: 1.7; }

        /* ===== Category Section ===== */
        .category-section {
            background: var(--bg-light);
        }
        .category-card {
            display: flex;
            align-items: center;
            gap: 40px;
            background: var(--bg-white);
            border-radius: var(--radius-lg);
            padding: 40px 44px;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border-light);
            transition: all var(--transition);
        }
        .category-card:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-4px);
        }
        .category-info { flex: 1; }
        .category-tag {
            display: inline-block;
            padding: 4px 14px;
            background: var(--accent-light);
            color: var(--accent-hover);
            border-radius: 50px;
            font-size: 0.8rem;
            font-weight: 600;
            margin-bottom: 12px;
        }
        .category-info h3 { font-size: 1.6rem; margin-bottom: 12px; }
        .category-info p { color: var(--text-secondary); margin-bottom: 20px; max-width: 480px; }
        .category-image {
            flex-shrink: 0;
            width: 280px;
            height: 200px;
            border-radius: var(--radius-md);
            overflow: hidden;
            background: var(--bg-light);
        }
        .category-image img { width: 100%; height: 100%; object-fit: cover; border-radius: var(--radius-md); }

        /* ===== Latest News (CMS) ===== */
        .news-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }
        .news-card {
            background: var(--bg-white);
            border-radius: var(--radius-md);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border-light);
            transition: all var(--transition);
        }
        .news-card:hover {
            transform: translateY(-5px);
            box-shadow: var(--shadow-md);
        }
        .news-card .thumb {
            width: 100%;
            height: 190px;
            object-fit: cover;
            border-radius: 0;
            background: var(--bg-light);
        }
        .news-card .body { padding: 20px 22px 24px; }
        .news-card .meta {
            display: flex;
            align-items: center;
            gap: 14px;
            font-size: 0.8rem;
            color: var(--text-muted);
            margin-bottom: 10px;
        }
        .news-card .meta .cat {
            background: var(--accent-light);
            color: var(--accent-hover);
            padding: 2px 12px;
            border-radius: 50px;
            font-weight: 600;
            font-size: 0.75rem;
        }
        .news-card .meta .date i { margin-right: 4px; }
        .news-card h3 { font-size: 1.05rem; margin-bottom: 8px; line-height: 1.4; }
        .news-card h3 a { color: var(--primary); }
        .news-card h3 a:hover { color: var(--blue-accent); }
        .news-card .excerpt {
            font-size: 0.88rem;
            color: var(--text-secondary);
            line-height: 1.7;
            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);
            background: var(--bg-light);
            border-radius: var(--radius-md);
            font-size: 0.95rem;
        }
        .news-empty i { font-size: 2rem; display: block; margin-bottom: 12px; opacity: 0.4; }

        /* ===== Stats Counter ===== */
        .stats-section {
            background: var(--bg-dark);
            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;
        }
        .stats-grid {
            position: relative;
            z-index: 1;
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 28px;
            text-align: center;
        }
        .stat-item .num { font-size: 2.6rem; font-weight: 800; color: var(--accent); display: block; }
        .stat-item .label { font-size: 0.92rem; color: rgba(255,255,255,0.65); margin-top: 6px; }
        .stat-item .divider {
            width: 40px;
            height: 3px;
            background: var(--accent);
            margin: 12px auto 0;
            border-radius: 4px;
            opacity: 0.5;
        }

        /* ===== Process Steps ===== */
        .process-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
            counter-reset: step;
        }
        .process-step {
            text-align: center;
            padding: 32px 20px;
            background: var(--bg-white);
            border-radius: var(--radius-md);
            border: 1px solid var(--border-light);
            transition: all var(--transition);
            position: relative;
        }
        .process-step:hover { border-color: var(--accent-light); box-shadow: var(--shadow-sm); transform: translateY(-3px); }
        .process-step .step-num {
            width: 48px;
            height: 48px;
            border-radius: 50%;
            background: var(--accent-light);
            color: var(--accent-hover);
            font-weight: 800;
            font-size: 1.2rem;
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 16px;
            transition: all var(--transition);
        }
        .process-step:hover .step-num { background: var(--accent); color: var(--primary-dark); }
        .process-step h4 { font-size: 1.05rem; margin-bottom: 8px; }
        .process-step p { font-size: 0.88rem; color: var(--text-secondary); }

        /* ===== FAQ ===== */
        .faq-list { max-width: 780px; margin: 0 auto; display: flex; flex-direction: column; gap: 12px; }
        .faq-item {
            background: var(--bg-white);
            border: 1px solid var(--border-light);
            border-radius: var(--radius-md);
            overflow: hidden;
            transition: all var(--transition);
        }
        .faq-item:hover { border-color: var(--accent-light); }
        .faq-question {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 18px 24px;
            font-weight: 600;
            font-size: 1rem;
            color: var(--primary);
            cursor: pointer;
            gap: 16px;
            background: none;
            width: 100%;
            text-align: left;
            transition: background var(--transition);
        }
        .faq-question:hover { background: var(--bg-light); }
        .faq-question i { color: var(--accent); font-size: 1.1rem; transition: transform var(--transition); flex-shrink: 0; }
        .faq-item.open .faq-question i { transform: rotate(180deg); }
        .faq-answer {
            padding: 0 24px 0 24px;
            max-height: 0;
            overflow: hidden;
            transition: all 0.3s ease;
            color: var(--text-secondary);
            font-size: 0.93rem;
            line-height: 1.8;
        }
        .faq-item.open .faq-answer {
            padding: 0 24px 20px 24px;
            max-height: 300px;
        }

        /* ===== CTA ===== */
        .cta-section {
            background: linear-gradient(135deg, var(--primary-dark) 0%, var(--primary-light) 100%);
            position: relative;
            overflow: hidden;
        }
        .cta-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background-image: url('/assets/images/backpic/back-3.png');
            background-size: cover;
            background-position: center;
            opacity: 0.10;
        }
        .cta-content {
            position: relative;
            z-index: 1;
            text-align: center;
            max-width: 640px;
            margin: 0 auto;
            color: var(--text-white);
        }
        .cta-content h2 { color: var(--text-white); }
        .cta-content p { color: rgba(255,255,255,0.75); margin: 16px 0 28px; font-size: 1.05rem; }
        .cta-actions { display: flex; gap: 14px; justify-content: center; flex-wrap: wrap; }

        /* ===== Footer ===== */
        .site-footer {
            background: var(--primary-dark);
            color: rgba(255,255,255,0.70);
            padding: 48px 0 28px;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 40px;
            padding-bottom: 32px;
            border-bottom: 1px solid rgba(255,255,255,0.08);
        }
        .footer-brand .site-logo { color: var(--text-white); margin-bottom: 12px; }
        .footer-brand .site-logo span { -webkit-text-fill-color: var(--text-white); background: none; }
        .footer-brand p { font-size: 0.9rem; line-height: 1.7; max-width: 320px; }
        .footer-col h4 { font-size: 0.95rem; font-weight: 700; color: var(--text-white); margin-bottom: 16px; }
        .footer-col a {
            display: block;
            color: rgba(255,255,255,0.55);
            font-size: 0.88rem;
            padding: 4px 0;
            transition: all var(--transition);
        }
        .footer-col a:hover { color: var(--accent); padding-left: 4px; }
        .footer-col a i { width: 20px; }
        .footer-bottom {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding-top: 20px;
            font-size: 0.82rem;
            color: rgba(255,255,255,0.40);
            flex-wrap: wrap;
            gap: 8px;
        }
        .footer-bottom a { color: rgba(255,255,255,0.40); }
        .footer-bottom a:hover { color: var(--accent); }

        /* ===== Responsive ===== */
        @media (max-width: 1024px) {
            .features-grid { grid-template-columns: repeat(2, 1fr); }
            .news-grid { grid-template-columns: repeat(2, 1fr); }
            .stats-grid { grid-template-columns: repeat(2, 1fr); }
            .process-grid { grid-template-columns: repeat(2, 1fr); }
            .footer-grid { grid-template-columns: 1fr 1fr; }
            .category-card { flex-direction: column; text-align: center; padding: 32px 24px; }
            .category-info p { max-width: 100%; }
            .category-image { width: 100%; max-width: 400px; height: 200px; }
        }
        @media (max-width: 768px) {
            .header-inner { height: 60px; }
            .main-nav { display: none; }
            .main-nav.open {
                display: flex;
                flex-direction: column;
                position: absolute;
                top: 60px;
                left: 0;
                width: 100%;
                background: rgba(255,255,255,0.98);
                backdrop-filter: blur(12px);
                -webkit-backdrop-filter: blur(12px);
                padding: 16px 20px;
                border-bottom: 1px solid var(--border-light);
                box-shadow: var(--shadow-md);
                gap: 4px;
            }
            .main-nav.open a { padding: 12px 16px; border-radius: var(--radius-sm); }
            .mobile-toggle { display: block; }
            .nav-search { display: none; }
            .nav-cta .btn { padding: 8px 18px; font-size: 0.85rem; }
            .hero { min-height: 80vh; padding: 100px 16px 60px; }
            .hero-stats { gap: 24px; }
            .features-grid { grid-template-columns: 1fr; }
            .news-grid { grid-template-columns: 1fr; }
            .stats-grid { grid-template-columns: repeat(2, 1fr); gap: 20px; }
            .process-grid { grid-template-columns: 1fr; }
            .footer-grid { grid-template-columns: 1fr; gap: 28px; }
            .footer-bottom { flex-direction: column; text-align: center; }
            .category-card { padding: 24px 16px; }
            .category-image { height: 180px; }
            .section { padding: 48px 0; }
            .hero-stat .num { font-size: 1.4rem; }
            .stat-item .num { font-size: 2rem; }
        }
        @media (max-width: 520px) {
            .header-inner { padding: 0 12px; }
            .site-logo { font-size: 1.1rem; }
            .site-logo i { font-size: 1.3rem; }
            .hero h1 { font-size: 1.8rem; }
            .hero p { font-size: 0.95rem; }
            .hero-actions { flex-direction: column; align-items: center; }
            .hero-actions .btn { width: 100%; max-width: 280px; justify-content: center; }
            .stats-grid { grid-template-columns: 1fr 1fr; gap: 16px; }
            .news-card .thumb { height: 160px; }
            .faq-question { padding: 14px 16px; font-size: 0.92rem; }
            .btn-lg { padding: 14px 28px; font-size: 0.95rem; }
        }

        /* ===== Misc ===== */
        .tag {
            display: inline-block;
            padding: 3px 12px;
            border-radius: 50px;
            font-size: 0.75rem;
            font-weight: 600;
            background: var(--bg-light);
            color: var(--text-secondary);
        }
        .tag-accent { background: var(--accent-light); color: var(--accent-hover); }
        .tag-blue { background: #e8f0fe; color: var(--blue-accent); }
        .gap-8 { gap: 8px; }
        .mt-12 { margin-top: 12px; }
        .mt-24 { margin-top: 24px; }
        .flex-center { display: flex; align-items: center; justify-content: center; }

/* roulang page: category1 */
/* ===== Design Variables ===== */
        :root {
            --primary: #1a2a6c;
            --primary-light: #2d4a8e;
            --primary-dark: #0f1a4a;
            --accent: #e8455c;
            --accent-light: #f06a7e;
            --accent-dark: #c62840;
            --gold: #f0b830;
            --gold-light: #f5d060;
            --bg-body: #f8f9fc;
            --bg-white: #ffffff;
            --bg-light: #f0f2f8;
            --bg-dark: #0f1a3a;
            --text-primary: #1a1a2e;
            --text-body: #3a3a4e;
            --text-muted: #7a7a8e;
            --text-light: #b0b0c0;
            --text-white: #ffffff;
            --border-color: #e2e5ee;
            --radius-sm: 8px;
            --radius-md: 14px;
            --radius-lg: 22px;
            --radius-xl: 30px;
            --shadow-sm: 0 2px 8px rgba(26, 42, 108, 0.06);
            --shadow-md: 0 6px 24px rgba(26, 42, 108, 0.10);
            --shadow-lg: 0 16px 48px rgba(26, 42, 108, 0.14);
            --shadow-accent: 0 6px 24px rgba(232, 69, 92, 0.25);
            --transition: 0.30s cubic-bezier(0.4, 0, 0.2, 1);
            --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', sans-serif;
            --max-width: 1200px;
            --header-height: 72px;
        }

        /* ===== Reset & Base ===== */
        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        html {
            scroll-behavior: smooth;
            -webkit-text-size-adjust: 100%;
        }
        body {
            font-family: var(--font-family);
            font-size: 16px;
            line-height: 1.7;
            color: var(--text-body);
            background: var(--bg-body);
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        a {
            color: var(--primary);
            text-decoration: none;
            transition: color var(--transition);
        }
        a:hover {
            color: var(--accent);
        }
        a:focus-visible {
            outline: 3px solid var(--accent);
            outline-offset: 2px;
            border-radius: 4px;
        }
        button,
        input,
        select,
        textarea {
            font-family: inherit;
            font-size: inherit;
        }
        button {
            cursor: pointer;
            border: none;
            background: none;
        }
        button:focus-visible {
            outline: 3px solid var(--accent);
            outline-offset: 2px;
        }
        ul,
        ol {
            list-style: none;
        }

        /* ===== Utility ===== */
        .container {
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 24px;
        }
        .section-padding {
            padding: 80px 0;
        }
        .section-title {
            font-size: 2.25rem;
            font-weight: 800;
            color: var(--text-primary);
            text-align: center;
            margin-bottom: 12px;
            letter-spacing: -0.02em;
        }
        .section-subtitle {
            font-size: 1.1rem;
            color: var(--text-muted);
            text-align: center;
            max-width: 640px;
            margin: 0 auto 48px;
            line-height: 1.6;
        }
        .badge {
            display: inline-block;
            padding: 4px 14px;
            border-radius: 50px;
            font-size: 0.8rem;
            font-weight: 600;
            letter-spacing: 0.3px;
            background: var(--bg-light);
            color: var(--primary);
        }
        .badge-accent {
            background: var(--accent);
            color: #fff;
        }
        .badge-gold {
            background: var(--gold);
            color: #1a1a2e;
        }
        .tag {
            display: inline-block;
            padding: 3px 12px;
            border-radius: var(--radius-sm);
            font-size: 0.78rem;
            font-weight: 500;
            background: var(--bg-light);
            color: var(--text-muted);
            border: 1px solid var(--border-color);
            transition: var(--transition);
        }
        .tag:hover {
            background: var(--primary);
            color: #fff;
            border-color: var(--primary);
        }

        /* ===== Header & Navigation ===== */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 1000;
            background: var(--bg-white);
            border-bottom: 1px solid var(--border-color);
            box-shadow: var(--shadow-sm);
            height: var(--header-height);
            display: flex;
            align-items: center;
        }
        .site-header .container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            width: 100%;
        }
        .site-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 1.4rem;
            font-weight: 800;
            color: var(--primary);
            letter-spacing: -0.3px;
            transition: var(--transition);
        }
        .site-logo i {
            font-size: 1.6rem;
            color: var(--gold);
        }
        .site-logo span {
            background: linear-gradient(135deg, var(--primary), var(--primary-light));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .site-logo:hover {
            opacity: 0.85;
        }
        .main-nav {
            display: flex;
            align-items: center;
            gap: 6px;
        }
        .main-nav a {
            display: flex;
            align-items: center;
            gap: 6px;
            padding: 8px 18px;
            border-radius: 50px;
            font-size: 0.95rem;
            font-weight: 600;
            color: var(--text-body);
            transition: var(--transition);
            position: relative;
        }
        .main-nav a i {
            font-size: 0.85rem;
            opacity: 0.7;
        }
        .main-nav a:hover {
            background: var(--bg-light);
            color: var(--primary);
        }
        .main-nav a.active {
            background: var(--primary);
            color: var(--text-white);
            box-shadow: var(--shadow-md);
        }
        .main-nav a.active i {
            opacity: 1;
        }
        .nav-actions {
            display: flex;
            align-items: center;
            gap: 14px;
        }
        .search-box {
            display: flex;
            align-items: center;
            background: var(--bg-light);
            border-radius: 50px;
            padding: 0 16px;
            border: 1px solid transparent;
            transition: var(--transition);
        }
        .search-box:focus-within {
            border-color: var(--primary);
            background: var(--bg-white);
            box-shadow: 0 0 0 4px rgba(26, 42, 108, 0.08);
        }
        .search-box input {
            border: none;
            background: transparent;
            padding: 8px 8px 8px 0;
            font-size: 0.9rem;
            color: var(--text-primary);
            outline: none;
            min-width: 160px;
        }
        .search-box input::placeholder {
            color: var(--text-light);
        }
        .search-box i {
            color: var(--text-muted);
            font-size: 0.95rem;
        }
        .btn-cta {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 10px 28px;
            border-radius: 50px;
            font-weight: 700;
            font-size: 0.95rem;
            background: var(--accent);
            color: #fff;
            box-shadow: var(--shadow-accent);
            transition: var(--transition);
            border: none;
        }
        .btn-cta i {
            font-size: 0.9rem;
        }
        .btn-cta:hover {
            background: var(--accent-dark);
            color: #fff;
            transform: translateY(-2px);
            box-shadow: 0 10px 30px rgba(232, 69, 92, 0.35);
        }
        .btn-cta:active {
            transform: translateY(0);
        }

        /* Mobile menu toggle */
        .menu-toggle {
            display: none;
            font-size: 1.5rem;
            color: var(--text-primary);
            padding: 6px 10px;
            border-radius: 8px;
            background: var(--bg-light);
            transition: var(--transition);
        }
        .menu-toggle:hover {
            background: var(--border-color);
        }

        /* ===== Hero / Banner ===== */
        .page-banner {
            position: relative;
            padding: 100px 0 80px;
            background: linear-gradient(135deg, var(--primary-dark) 0%, var(--primary) 60%, var(--primary-light) 100%);
            overflow: hidden;
            min-height: 360px;
            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: 0.20;
            mix-blend-mode: overlay;
        }
        .page-banner::after {
            content: '';
            position: absolute;
            top: -50%;
            right: -20%;
            width: 600px;
            height: 600px;
            border-radius: 50%;
            background: radial-gradient(circle, rgba(240, 184, 48, 0.15), transparent 70%);
            pointer-events: none;
        }
        .page-banner .container {
            position: relative;
            z-index: 2;
            text-align: center;
        }
        .page-banner .banner-badge {
            display: inline-block;
            padding: 6px 20px;
            border-radius: 50px;
            font-size: 0.85rem;
            font-weight: 600;
            background: rgba(255, 255, 255, 0.12);
            color: var(--gold-light);
            backdrop-filter: blur(6px);
            border: 1px solid rgba(255, 255, 255, 0.10);
            margin-bottom: 20px;
            letter-spacing: 0.5px;
        }
        .page-banner h1 {
            font-size: 3.2rem;
            font-weight: 900;
            color: var(--text-white);
            letter-spacing: -0.03em;
            line-height: 1.15;
            margin-bottom: 16px;
            text-shadow: 0 4px 20px rgba(0, 0, 0, 0.20);
        }
        .page-banner p {
            font-size: 1.15rem;
            color: rgba(255, 255, 255, 0.85);
            max-width: 620px;
            margin: 0 auto 28px;
            line-height: 1.7;
        }
        .banner-stats {
            display: flex;
            justify-content: center;
            gap: 40px;
            flex-wrap: wrap;
            margin-top: 12px;
        }
        .banner-stats .stat-item {
            text-align: center;
            color: rgba(255, 255, 255, 0.90);
        }
        .banner-stats .stat-number {
            font-size: 2.2rem;
            font-weight: 800;
            color: var(--gold);
            line-height: 1.2;
        }
        .banner-stats .stat-label {
            font-size: 0.85rem;
            opacity: 0.75;
            letter-spacing: 0.3px;
        }

        /* ===== Category Intro ===== */
        .category-intro {
            background: var(--bg-white);
        }
        .intro-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 50px;
            align-items: center;
        }
        .intro-image {
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-lg);
            position: relative;
        }
        .intro-image img {
            width: 100%;
            height: 380px;
            object-fit: cover;
            transition: var(--transition);
        }
        .intro-image:hover img {
            transform: scale(1.03);
        }
        .intro-image .image-tag {
            position: absolute;
            top: 16px;
            left: 16px;
            background: var(--accent);
            color: #fff;
            padding: 6px 16px;
            border-radius: 50px;
            font-size: 0.8rem;
            font-weight: 600;
        }
        .intro-content h2 {
            font-size: 2rem;
            font-weight: 800;
            color: var(--text-primary);
            margin-bottom: 16px;
            letter-spacing: -0.02em;
        }
        .intro-content p {
            color: var(--text-body);
            margin-bottom: 16px;
            line-height: 1.8;
        }
        .intro-features {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 12px;
            margin-top: 20px;
        }
        .intro-features li {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 0.95rem;
            color: var(--text-body);
        }
        .intro-features li i {
            color: var(--accent);
            font-size: 1rem;
            min-width: 20px;
        }

        /* ===== Event Categories ===== */
        .event-categories {
            background: var(--bg-light);
        }
        .category-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 28px;
        }
        .category-card {
            background: var(--bg-white);
            border-radius: var(--radius-md);
            padding: 32px 24px 28px;
            text-align: center;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border-color);
            transition: var(--transition);
            position: relative;
            overflow: hidden;
        }
        .category-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 4px;
            background: var(--primary);
            transform: scaleX(0);
            transform-origin: left;
            transition: var(--transition);
        }
        .category-card:hover::before {
            transform: scaleX(1);
        }
        .category-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-md);
            border-color: transparent;
        }
        .category-card .card-icon {
            width: 64px;
            height: 64px;
            border-radius: 50%;
            background: var(--bg-light);
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 16px;
            font-size: 1.8rem;
            color: var(--primary);
            transition: var(--transition);
        }
        .category-card:hover .card-icon {
            background: var(--primary);
            color: #fff;
            transform: scale(1.05);
        }
        .category-card h3 {
            font-size: 1.2rem;
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: 8px;
        }
        .category-card p {
            font-size: 0.9rem;
            color: var(--text-muted);
            margin-bottom: 16px;
            line-height: 1.5;
        }
        .category-card .card-link {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-weight: 600;
            font-size: 0.9rem;
            color: var(--primary);
            transition: var(--transition);
        }
        .category-card .card-link i {
            font-size: 0.8rem;
            transition: var(--transition);
        }
        .category-card .card-link:hover {
            color: var(--accent);
            gap: 10px;
        }

        /* ===== Latest News ===== */
        .latest-news {
            background: var(--bg-white);
        }
        .news-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 28px;
        }
        .news-card {
            border-radius: var(--radius-md);
            overflow: hidden;
            background: var(--bg-white);
            border: 1px solid var(--border-color);
            box-shadow: var(--shadow-sm);
            transition: var(--transition);
        }
        .news-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-md);
            border-color: transparent;
        }
        .news-card .news-image {
            position: relative;
            height: 200px;
            overflow: hidden;
        }
        .news-card .news-image img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: var(--transition);
        }
        .news-card:hover .news-image img {
            transform: scale(1.05);
        }
        .news-card .news-image .news-tag {
            position: absolute;
            top: 12px;
            left: 12px;
            background: var(--accent);
            color: #fff;
            padding: 4px 14px;
            border-radius: 50px;
            font-size: 0.75rem;
            font-weight: 600;
        }
        .news-card .news-body {
            padding: 20px 22px 24px;
        }
        .news-card .news-meta {
            display: flex;
            align-items: center;
            gap: 16px;
            font-size: 0.8rem;
            color: var(--text-muted);
            margin-bottom: 10px;
        }
        .news-card .news-meta i {
            margin-right: 4px;
        }
        .news-card .news-body h3 {
            font-size: 1.1rem;
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: 8px;
            line-height: 1.4;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .news-card .news-body p {
            font-size: 0.9rem;
            color: var(--text-muted);
            line-height: 1.6;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .news-card .news-foot {
            display: flex;
            align-items: center;
            justify-content: space-between;
            margin-top: 14px;
            padding-top: 14px;
            border-top: 1px solid var(--border-color);
        }
        .news-card .news-foot a {
            font-size: 0.85rem;
            font-weight: 600;
            color: var(--primary);
        }
        .news-card .news-foot a i {
            font-size: 0.75rem;
            transition: var(--transition);
        }
        .news-card .news-foot a:hover i {
            transform: translateX(4px);
        }
        .news-card .news-foot .badge {
            font-size: 0.7rem;
            padding: 2px 10px;
        }

        /* ===== Guide Steps ===== */
        .guide-steps {
            background: var(--bg-light);
        }
        .steps-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 28px;
            counter-reset: step-counter;
        }
        .step-card {
            background: var(--bg-white);
            border-radius: var(--radius-md);
            padding: 32px 24px;
            text-align: center;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border-color);
            position: relative;
            transition: var(--transition);
        }
        .step-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-md);
        }
        .step-card .step-number {
            width: 48px;
            height: 48px;
            border-radius: 50%;
            background: var(--primary);
            color: #fff;
            font-size: 1.3rem;
            font-weight: 800;
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 16px;
            box-shadow: 0 4px 14px rgba(26, 42, 108, 0.20);
        }
        .step-card h3 {
            font-size: 1.1rem;
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: 8px;
        }
        .step-card p {
            font-size: 0.9rem;
            color: var(--text-muted);
            line-height: 1.6;
        }

        /* ===== FAQ ===== */
        .faq-section {
            background: var(--bg-white);
        }
        .faq-list {
            max-width: 780px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 14px;
        }
        .faq-item {
            background: var(--bg-light);
            border-radius: var(--radius-md);
            border: 1px solid var(--border-color);
            overflow: hidden;
            transition: var(--transition);
        }
        .faq-item:hover {
            border-color: var(--primary-light);
        }
        .faq-question {
            width: 100%;
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 18px 24px;
            font-size: 1rem;
            font-weight: 700;
            color: var(--text-primary);
            background: transparent;
            text-align: left;
            transition: var(--transition);
            gap: 12px;
        }
        .faq-question i {
            font-size: 0.85rem;
            color: var(--primary);
            transition: var(--transition);
            flex-shrink: 0;
        }
        .faq-question:hover {
            color: var(--primary);
        }
        .faq-question[aria-expanded="true"] i {
            transform: rotate(180deg);
        }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.40s ease, padding 0.30s ease;
            padding: 0 24px;
        }
        .faq-answer p {
            padding-bottom: 18px;
            color: var(--text-body);
            font-size: 0.95rem;
            line-height: 1.7;
        }
        .faq-item.active .faq-answer {
            max-height: 300px;
            padding: 0 24px;
        }

        /* ===== CTA ===== */
        .cta-section {
            background: linear-gradient(135deg, var(--primary-dark), var(--primary), var(--primary-light));
            position: relative;
            overflow: hidden;
        }
        .cta-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-3.png') center/cover no-repeat;
            opacity: 0.10;
            mix-blend-mode: overlay;
        }
        .cta-section .container {
            position: relative;
            z-index: 2;
            text-align: center;
        }
        .cta-section h2 {
            font-size: 2.6rem;
            font-weight: 800;
            color: var(--text-white);
            margin-bottom: 16px;
            letter-spacing: -0.02em;
        }
        .cta-section p {
            font-size: 1.1rem;
            color: rgba(255, 255, 255, 0.85);
            max-width: 560px;
            margin: 0 auto 32px;
        }
        .cta-buttons {
            display: flex;
            justify-content: center;
            gap: 16px;
            flex-wrap: wrap;
        }
        .btn-primary {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 14px 36px;
            border-radius: 50px;
            font-weight: 700;
            font-size: 1rem;
            background: var(--gold);
            color: var(--primary-dark);
            transition: var(--transition);
            box-shadow: 0 6px 24px rgba(240, 184, 48, 0.30);
        }
        .btn-primary:hover {
            background: var(--gold-light);
            color: var(--primary-dark);
            transform: translateY(-2px);
            box-shadow: 0 10px 32px rgba(240, 184, 48, 0.45);
        }
        .btn-outline-light {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 14px 36px;
            border-radius: 50px;
            font-weight: 700;
            font-size: 1rem;
            background: transparent;
            color: var(--text-white);
            border: 2px solid rgba(255, 255, 255, 0.30);
            transition: var(--transition);
        }
        .btn-outline-light:hover {
            background: rgba(255, 255, 255, 0.10);
            border-color: rgba(255, 255, 255, 0.60);
            color: #fff;
            transform: translateY(-2px);
        }

        /* ===== Footer ===== */
        .site-footer {
            background: var(--bg-dark);
            color: rgba(255, 255, 255, 0.80);
            padding: 60px 0 0;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 1.8fr 1fr 1fr 1.2fr;
            gap: 40px;
            padding-bottom: 40px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.08);
        }
        .footer-brand .site-logo {
            color: #fff;
            margin-bottom: 14px;
        }
        .footer-brand .site-logo span {
            background: none;
            -webkit-text-fill-color: #fff;
            color: #fff;
        }
        .footer-brand p {
            font-size: 0.9rem;
            color: rgba(255, 255, 255, 0.60);
            line-height: 1.7;
            max-width: 320px;
        }
        .footer-col h4 {
            font-size: 1rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: 16px;
            letter-spacing: 0.3px;
        }
        .footer-col a {
            display: flex;
            align-items: center;
            gap: 8px;
            color: rgba(255, 255, 255, 0.65);
            font-size: 0.9rem;
            padding: 4px 0;
            transition: var(--transition);
        }
        .footer-col a i {
            font-size: 0.7rem;
            color: var(--gold);
        }
        .footer-col a:hover {
            color: var(--gold);
            padding-left: 4px;
        }
        .footer-bottom {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 20px 0;
            flex-wrap: wrap;
            gap: 12px;
            font-size: 0.85rem;
            color: rgba(255, 255, 255, 0.45);
        }
        .footer-bottom a {
            color: var(--gold);
        }
        .footer-bottom a:hover {
            color: var(--gold-light);
        }

        /* ===== Responsive ===== */
        @media (max-width: 1024px) {
            .category-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .steps-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .news-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .intro-grid {
                grid-template-columns: 1fr;
                gap: 30px;
            }
            .intro-image img {
                height: 280px;
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 30px;
            }
            .page-banner h1 {
                font-size: 2.6rem;
            }
        }
        @media (max-width: 768px) {
            :root {
                --header-height: 64px;
            }
            .section-padding {
                padding: 50px 0;
            }
            .section-title {
                font-size: 1.7rem;
            }
            .section-subtitle {
                font-size: 1rem;
                margin-bottom: 32px;
            }
            .main-nav {
                display: none;
                position: absolute;
                top: var(--header-height);
                left: 0;
                right: 0;
                background: var(--bg-white);
                flex-direction: column;
                padding: 16px 24px 24px;
                border-bottom: 1px solid var(--border-color);
                box-shadow: var(--shadow-md);
                gap: 4px;
            }
            .main-nav.open {
                display: flex;
            }
            .main-nav a {
                padding: 12px 16px;
                border-radius: var(--radius-sm);
                font-size: 1rem;
            }
            .main-nav a.active {
                background: var(--bg-light);
                color: var(--primary);
                box-shadow: none;
            }
            .menu-toggle {
                display: block;
            }
            .nav-actions .search-box {
                display: none;
            }
            .nav-actions .btn-cta {
                padding: 8px 18px;
                font-size: 0.85rem;
            }
            .page-banner {
                padding: 70px 0 50px;
                min-height: 300px;
            }
            .page-banner h1 {
                font-size: 2rem;
            }
            .page-banner p {
                font-size: 1rem;
            }
            .banner-stats {
                gap: 20px;
            }
            .banner-stats .stat-number {
                font-size: 1.6rem;
            }
            .category-grid {
                grid-template-columns: 1fr 1fr;
                gap: 16px;
            }
            .steps-grid {
                grid-template-columns: 1fr 1fr;
                gap: 16px;
            }
            .news-grid {
                grid-template-columns: 1fr;
                gap: 20px;
            }
            .intro-features {
                grid-template-columns: 1fr;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
            .cta-section h2 {
                font-size: 1.8rem;
            }
            .faq-question {
                font-size: 0.95rem;
                padding: 14px 18px;
            }
            .category-card {
                padding: 24px 16px 20px;
            }
            .step-card {
                padding: 24px 16px;
            }
            .news-card .news-body {
                padding: 16px 18px 20px;
            }
        }
        @media (max-width: 520px) {
            .container {
                padding: 0 16px;
            }
            .page-banner h1 {
                font-size: 1.6rem;
            }
            .category-grid {
                grid-template-columns: 1fr;
            }
            .steps-grid {
                grid-template-columns: 1fr;
            }
            .banner-stats {
                flex-direction: column;
                gap: 12px;
            }
            .cta-buttons {
                flex-direction: column;
                align-items: center;
            }
            .btn-primary,
            .btn-outline-light {
                width: 100%;
                justify-content: center;
            }
            .intro-image img {
                height: 200px;
            }
            .footer-grid {
                grid-template-columns: 1fr;
            }
            .nav-actions .btn-cta span {
                display: none;
            }
        }

/* roulang page: article */
/* ===== Design Variables ===== */
:root {
    --primary: #1e3a5f;
    --primary-light: #2a5298;
    --primary-dark: #0f2440;
    --secondary: #d4a017;
    --secondary-light: #f0c040;
    --secondary-dark: #b8860b;
    --accent: #e85d3a;
    --bg: #f8f9fc;
    --bg-alt: #ffffff;
    --bg-dark: #0f1a2e;
    --text: #1a2a3a;
    --text-light: #4a5a6a;
    --text-lighter: #7a8a9a;
    --text-white: #f0f4f8;
    --border: #e0e4ec;
    --border-light: #eef0f5;
    --radius: 12px;
    --radius-lg: 20px;
    --radius-sm: 8px;
    --shadow: 0 4px 24px rgba(30, 58, 95, 0.08);
    --shadow-lg: 0 12px 48px rgba(30, 58, 95, 0.14);
    --shadow-hover: 0 16px 56px rgba(30, 58, 95, 0.18);
    --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    --font: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, 'Noto Sans SC', sans-serif;
    --max-width: 1200px;
    --content-width: 800px;
    --header-h: 72px;
}

/* ===== Reset & Base ===== */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body {
    font-family: var(--font);
    font-size: 16px;
    line-height: 1.7;
    color: var(--text);
    background: var(--bg);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}
a { color: var(--primary); text-decoration: none; transition: color var(--transition); }
a:hover { color: var(--secondary); }
img { max-width: 100%; height: auto; display: block; }
button, input, textarea, select { font-family: inherit; font-size: inherit; }
button { cursor: pointer; border: none; background: none; }
ul, ol { list-style: none; }
h1, h2, h3, h4, h5, h6 { line-height: 1.3; color: var(--primary-dark); }
.container {
    width: 100%;
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 24px;
}
@media (max-width: 768px) {
    .container { padding: 0 16px; }
}

/* ===== Header & Navigation ===== */
.site-header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: rgba(255,255,255,0.96);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--border-light);
    height: var(--header-h);
    transition: box-shadow var(--transition);
}
.site-header.scrolled { box-shadow: 0 2px 32px rgba(30,58,95,0.10); }
.header-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: var(--header-h);
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 24px;
}
.site-logo {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 22px;
    font-weight: 700;
    color: var(--primary);
    text-decoration: none;
}
.site-logo i { color: var(--secondary); font-size: 26px; }
.site-logo span { background: linear-gradient(135deg, var(--primary), var(--primary-light)); -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text; }
.main-nav {
    display: flex;
    align-items: center;
    gap: 8px;
}
.main-nav a {
    padding: 8px 18px;
    border-radius: var(--radius-sm);
    font-size: 15px;
    font-weight: 500;
    color: var(--text-light);
    transition: all var(--transition);
    position: relative;
    text-decoration: none;
}
.main-nav a i { margin-right: 6px; font-size: 14px; }
.main-nav a:hover { color: var(--primary); background: rgba(30,58,95,0.06); }
.main-nav a.active { color: var(--primary); background: rgba(30,58,95,0.08); font-weight: 600; }
.nav-actions {
    display: flex;
    align-items: center;
    gap: 12px;
}
.search-box {
    display: flex;
    align-items: center;
    background: var(--bg);
    border: 1px solid var(--border);
    border-radius: 40px;
    padding: 0 16px;
    transition: all var(--transition);
}
.search-box:focus-within { border-color: var(--secondary); box-shadow: 0 0 0 3px rgba(212,160,23,0.15); }
.search-box input {
    border: none;
    background: transparent;
    padding: 8px 10px;
    font-size: 14px;
    color: var(--text);
    outline: none;
    min-width: 120px;
}
.search-box input::placeholder { color: var(--text-lighter); }
.search-box button { color: var(--text-lighter); padding: 8px 4px; font-size: 16px; transition: color var(--transition); }
.search-box button:hover { color: var(--secondary); }
.btn-cta {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 10px 24px;
    border-radius: 40px;
    font-size: 14px;
    font-weight: 600;
    color: #fff;
    background: linear-gradient(135deg, var(--secondary), var(--secondary-dark));
    box-shadow: 0 4px 16px rgba(212,160,23,0.30);
    transition: all var(--transition);
    text-decoration: none;
    border: none;
    cursor: pointer;
}
.btn-cta:hover { transform: translateY(-2px); box-shadow: 0 8px 28px rgba(212,160,23,0.40); color: #fff; }
.btn-cta i { font-size: 14px; }
.mobile-toggle { display: none; font-size: 24px; color: var(--primary); padding: 8px; cursor: pointer; }

@media (max-width: 768px) {
    .main-nav { display: none; position: absolute; top: var(--header-h); left: 0; right: 0; background: rgba(255,255,255,0.98); backdrop-filter: blur(12px); flex-direction: column; padding: 16px 24px; border-bottom: 1px solid var(--border); box-shadow: var(--shadow); }
    .main-nav.open { display: flex; }
    .main-nav a { width: 100%; padding: 12px 16px; border-radius: var(--radius-sm); }
    .mobile-toggle { display: block; }
    .nav-actions .search-box { display: none; }
    .nav-actions .btn-cta { padding: 8px 16px; font-size: 13px; }
    .header-inner { padding: 0 16px; }
}

/* ===== Article Banner ===== */
.article-banner {
    margin-top: var(--header-h);
    position: relative;
    min-height: 320px;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    background: var(--bg-dark);
    overflow: hidden;
}
.article-banner-bg {
    position: absolute;
    inset: 0;
    background: url('/assets/images/backpic/back-1.png') center center / cover no-repeat;
    opacity: 0.55;
    transition: transform 0.6s ease;
}
.article-banner:hover .article-banner-bg { transform: scale(1.02); }
.article-banner-overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, rgba(15,26,46,0.82) 0%, rgba(30,58,95,0.70) 100%);
}
.article-banner-content {
    position: relative;
    z-index: 2;
    max-width: 800px;
    padding: 60px 24px 50px;
    color: var(--text-white);
}
.article-banner-content .banner-category {
    display: inline-block;
    padding: 6px 20px;
    border-radius: 40px;
    background: rgba(212,160,23,0.25);
    color: var(--secondary-light);
    font-size: 13px;
    font-weight: 600;
    letter-spacing: 0.5px;
    margin-bottom: 16px;
    border: 1px solid rgba(212,160,23,0.20);
}
.article-banner-content h1 {
    font-size: 36px;
    font-weight: 800;
    color: #fff;
    line-height: 1.25;
    margin-bottom: 16px;
    text-shadow: 0 2px 16px rgba(0,0,0,0.20);
}
.article-banner-content .banner-meta {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 20px;
    flex-wrap: wrap;
    font-size: 14px;
    color: rgba(255,255,255,0.75);
}
.article-banner-content .banner-meta i { margin-right: 6px; color: var(--secondary-light); }
.article-banner-content .banner-meta span { display: inline-flex; align-items: center; }
@media (max-width: 768px) {
    .article-banner { min-height: 240px; }
    .article-banner-content h1 { font-size: 26px; }
    .article-banner-content { padding: 40px 16px 36px; }
    .article-banner-content .banner-meta { gap: 12px; font-size: 13px; }
}

/* ===== Breadcrumb ===== */
.breadcrumb-bar {
    background: var(--bg);
    border-bottom: 1px solid var(--border-light);
    padding: 12px 0;
}
.breadcrumb-bar .container {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 14px;
    color: var(--text-lighter);
}
.breadcrumb-bar a { color: var(--text-lighter); text-decoration: none; }
.breadcrumb-bar a:hover { color: var(--primary); }
.breadcrumb-bar i { font-size: 10px; color: var(--text-lighter); }
.breadcrumb-bar .current { color: var(--text); font-weight: 500; }

/* ===== Article Content ===== */
.article-main {
    padding: 40px 0 60px;
}
.article-body {
    max-width: var(--content-width);
    margin: 0 auto;
    background: var(--bg-alt);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow);
    padding: 48px 56px;
}
.article-body h1.article-title {
    font-size: 30px;
    font-weight: 800;
    color: var(--primary-dark);
    margin-bottom: 12px;
    line-height: 1.3;
}
.article-body .article-meta {
    display: flex;
    flex-wrap: wrap;
    gap: 18px;
    align-items: center;
    padding-bottom: 24px;
    margin-bottom: 32px;
    border-bottom: 1px solid var(--border-light);
    font-size: 14px;
    color: var(--text-lighter);
}
.article-body .article-meta i { margin-right: 6px; color: var(--secondary); }
.article-body .article-meta .cat-tag {
    display: inline-block;
    padding: 2px 14px;
    border-radius: 20px;
    background: rgba(30,58,95,0.06);
    color: var(--primary);
    font-size: 13px;
    font-weight: 500;
}
.article-content {
    font-size: 16px;
    line-height: 1.85;
    color: var(--text);
}
.article-content p { margin-bottom: 1.2em; }
.article-content h2, .article-content h3 { margin-top: 1.6em; margin-bottom: 0.6em; color: var(--primary-dark); }
.article-content h2 { font-size: 24px; }
.article-content h3 { font-size: 20px; }
.article-content ul, .article-content ol { margin: 1em 0; padding-left: 24px; }
.article-content ul { list-style: disc; }
.article-content ol { list-style: decimal; }
.article-content li { margin-bottom: 0.5em; }
.article-content a { color: var(--primary-light); text-decoration: underline; }
.article-content a:hover { color: var(--secondary); }
.article-content blockquote {
    margin: 1.5em 0;
    padding: 16px 24px;
    border-left: 4px solid var(--secondary);
    background: rgba(212,160,23,0.06);
    border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
    color: var(--text-light);
    font-style: italic;
}
.article-content img {
    border-radius: var(--radius);
    margin: 1.5em auto;
    box-shadow: var(--shadow);
}
.article-content pre, .article-content code {
    font-family: 'JetBrains Mono', monospace;
    background: var(--bg);
    border-radius: var(--radius-sm);
    font-size: 14px;
}
.article-content pre { padding: 20px; overflow-x: auto; border: 1px solid var(--border); }
.article-content code { padding: 2px 8px; }

/* Article Tags */
.article-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    margin-top: 36px;
    padding-top: 24px;
    border-top: 1px solid var(--border-light);
}
.article-tags .tag {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 6px 16px;
    border-radius: 40px;
    background: var(--bg);
    border: 1px solid var(--border);
    font-size: 13px;
    color: var(--text-light);
    transition: all var(--transition);
    text-decoration: none;
}
.article-tags .tag:hover { border-color: var(--secondary); color: var(--secondary-dark); background: rgba(212,160,23,0.05); }
.article-tags .tag i { font-size: 12px; color: var(--secondary); }

/* Article Not Found */
.article-not-found {
    text-align: center;
    padding: 80px 24px;
}
.article-not-found i { font-size: 64px; color: var(--text-lighter); margin-bottom: 20px; display: block; }
.article-not-found h2 { font-size: 28px; color: var(--primary); margin-bottom: 12px; }
.article-not-found p { color: var(--text-light); margin-bottom: 24px; font-size: 16px; }
.article-not-found .btn-back { display: inline-flex; align-items: center; gap: 8px; padding: 12px 32px; border-radius: 40px; background: var(--primary); color: #fff; font-weight: 600; transition: all var(--transition); text-decoration: none; }
.article-not-found .btn-back:hover { background: var(--primary-light); transform: translateY(-2px); box-shadow: var(--shadow); color: #fff; }

@media (max-width: 768px) {
    .article-body { padding: 28px 20px; border-radius: var(--radius); }
    .article-body h1.article-title { font-size: 24px; }
    .article-content { font-size: 15px; }
    .article-main { padding: 24px 0 40px; }
}

/* ===== Related Posts ===== */
.section-related {
    padding: 60px 0;
    background: var(--bg);
}
.section-related .section-title {
    text-align: center;
    font-size: 28px;
    font-weight: 700;
    color: var(--primary-dark);
    margin-bottom: 8px;
}
.section-related .section-sub {
    text-align: center;
    color: var(--text-lighter);
    font-size: 15px;
    margin-bottom: 36px;
}
.related-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}
.related-card {
    background: var(--bg-alt);
    border-radius: var(--radius);
    overflow: hidden;
    box-shadow: var(--shadow);
    transition: all var(--transition);
    border: 1px solid var(--border-light);
    display: flex;
    flex-direction: column;
}
.related-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-hover); }
.related-card .card-img {
    width: 100%;
    aspect-ratio: 16 / 10;
    object-fit: cover;
    display: block;
}
.related-card .card-body { padding: 20px 22px 24px; flex: 1; display: flex; flex-direction: column; }
.related-card .card-body .card-cat {
    font-size: 12px;
    font-weight: 600;
    color: var(--secondary-dark);
    text-transform: uppercase;
    letter-spacing: 1px;
    margin-bottom: 6px;
}
.related-card .card-body h3 { font-size: 17px; font-weight: 700; color: var(--primary-dark); margin-bottom: 8px; line-height: 1.4; }
.related-card .card-body h3 a { color: inherit; text-decoration: none; }
.related-card .card-body h3 a:hover { color: var(--secondary); }
.related-card .card-body p { font-size: 14px; color: var(--text-lighter); line-height: 1.6; flex: 1; margin-bottom: 12px; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
.related-card .card-body .card-meta { font-size: 13px; color: var(--text-lighter); display: flex; align-items: center; gap: 12px; }
.related-card .card-body .card-meta i { margin-right: 4px; font-size: 12px; color: var(--secondary); }
.related-empty {
    grid-column: 1 / -1;
    text-align: center;
    padding: 40px;
    color: var(--text-lighter);
    font-size: 15px;
}

@media (max-width: 1024px) {
    .related-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 640px) {
    .related-grid { grid-template-columns: 1fr; }
    .section-related { padding: 40px 0; }
    .section-related .section-title { font-size: 22px; }
}

/* ===== CTA Section ===== */
.cta-section {
    padding: 70px 0;
    background: linear-gradient(135deg, var(--primary-dark) 0%, var(--primary) 100%);
    color: #fff;
    text-align: center;
}
.cta-section h2 { font-size: 30px; font-weight: 700; color: #fff; margin-bottom: 12px; }
.cta-section p { font-size: 16px; color: rgba(255,255,255,0.75); max-width: 600px; margin: 0 auto 28px; }
.cta-section .btn-cta-large {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    padding: 14px 40px;
    border-radius: 40px;
    font-size: 16px;
    font-weight: 600;
    color: var(--primary-dark);
    background: var(--secondary);
    box-shadow: 0 6px 24px rgba(212,160,23,0.35);
    transition: all var(--transition);
    text-decoration: none;
}
.cta-section .btn-cta-large:hover { transform: translateY(-3px); box-shadow: 0 12px 40px rgba(212,160,23,0.45); background: var(--secondary-light); }
@media (max-width: 768px) {
    .cta-section { padding: 48px 0; }
    .cta-section h2 { font-size: 24px; }
    .cta-section .btn-cta-large { padding: 12px 28px; font-size: 15px; }
}

/* ===== Footer ===== */
.site-footer {
    background: var(--bg-dark);
    color: rgba(255,255,255,0.70);
    padding: 56px 0 0;
    border-top: 3px solid var(--secondary);
}
.footer-grid {
    display: grid;
    grid-template-columns: 1.6fr 1fr 1fr 1fr;
    gap: 36px;
    padding-bottom: 40px;
    border-bottom: 1px solid rgba(255,255,255,0.08);
}
.footer-brand .site-logo { color: #fff; font-size: 20px; margin-bottom: 12px; display: inline-flex; }
.footer-brand .site-logo i { color: var(--secondary); }
.footer-brand .site-logo span { -webkit-text-fill-color: #fff; background: none; }
.footer-brand p { font-size: 14px; line-height: 1.7; color: rgba(255,255,255,0.55); margin-top: 12px; }
.footer-col h4 { font-size: 15px; font-weight: 700; color: #fff; margin-bottom: 16px; letter-spacing: 0.5px; }
.footer-col a { display: flex; align-items: center; gap: 8px; padding: 6px 0; font-size: 14px; color: rgba(255,255,255,0.55); text-decoration: none; transition: all var(--transition); }
.footer-col a:hover { color: var(--secondary); padding-left: 4px; }
.footer-col a i { font-size: 10px; color: var(--secondary); width: 14px; text-align: center; }
.footer-bottom {
    display: flex;
    flex-wrap: wrap;
    justify-content: space-between;
    align-items: center;
    padding: 20px 0;
    font-size: 13px;
    color: rgba(255,255,255,0.40);
}
.footer-bottom a { color: rgba(255,255,255,0.55); text-decoration: none; }
.footer-bottom a:hover { color: var(--secondary); }

@media (max-width: 900px) {
    .footer-grid { grid-template-columns: 1fr 1fr; gap: 28px; }
}
@media (max-width: 640px) {
    .footer-grid { grid-template-columns: 1fr; gap: 24px; }
    .footer-bottom { flex-direction: column; gap: 8px; text-align: center; }
    .site-footer { padding: 36px 0 0; }
}

/* ===== Back to Top ===== */
.back-top {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 48px;
    height: 48px;
    border-radius: 50%;
    background: var(--primary);
    color: #fff;
    font-size: 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: var(--shadow);
    opacity: 0;
    visibility: hidden;
    transform: translateY(16px);
    transition: all var(--transition);
    z-index: 999;
    border: none;
    cursor: pointer;
}
.back-top.visible { opacity: 1; visibility: visible; transform: translateY(0); }
.back-top:hover { background: var(--primary-light); transform: translateY(-4px); box-shadow: var(--shadow-lg); color: #fff; }

/* ===== Responsive Fine-tune ===== */
@media (max-width: 520px) {
    .article-banner-content h1 { font-size: 22px; }
    .article-body h1.article-title { font-size: 20px; }
    .article-body { padding: 20px 16px; }
    .article-content { font-size: 14px; }
    .cta-section h2 { font-size: 20px; }
    .breadcrumb-bar .container { font-size: 12px; gap: 4px; }
}