/* roulang page: index */
/* ===== Design Variables ===== */
        :root {
            --primary: #0d1b2a;
            --primary-light: #1b3a5c;
            --primary-dark: #070e17;
            --accent: #f0a500;
            --accent-hover: #d49400;
            --accent-light: #fff3d6;
            --accent-glow: rgba(240, 165, 0, 0.25);
            --text: #1a1a2e;
            --text-light: #6b7280;
            --text-white: #ffffff;
            --bg: #ffffff;
            --bg-alt: #f4f6fc;
            --bg-dark: #0d1b2a;
            --border: #e5e7eb;
            --border-light: #f0f2f5;
            --radius-sm: 8px;
            --radius: 12px;
            --radius-lg: 20px;
            --radius-xl: 28px;
            --shadow-sm: 0 2px 8px rgba(0,0,0,0.05);
            --shadow: 0 4px 20px rgba(0,0,0,0.08);
            --shadow-lg: 0 12px 40px rgba(0,0,0,0.12);
            --shadow-glow: 0 0 30px rgba(240, 165, 0, 0.15);
            --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 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-font-smoothing: antialiased; }
        body {
            font-family: var(--font-sans);
            font-size: 16px;
            line-height: 1.7;
            color: var(--text);
            background: var(--bg);
            overflow-x: hidden;
        }
        img { max-width: 100%; height: auto; display: block; }
        a { color: inherit; text-decoration: none; transition: color var(--transition); }
        a:hover { color: var(--accent); }
        button { cursor: pointer; font-family: inherit; border: none; background: none; }
        input, textarea { font-family: inherit; }
        ul { 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, 2.5vw, 1.6rem); }
        h4 { font-size: 1.15rem; }
        p { margin-bottom: 0.5rem; }
        .container {
            width: 100%;
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 24px;
        }
        section { padding: 80px 0; }
        @media (max-width: 768px) { section { padding: 56px 0; } }
        @media (max-width: 520px) { section { padding: 40px 0; } }

        /* ===== Utility ===== */
        .text-accent { color: var(--accent); }
        .text-center { text-align: center; }
        .mb-1 { margin-bottom: 0.5rem; }
        .mb-2 { margin-bottom: 1rem; }
        .mb-3 { margin-bottom: 1.5rem; }
        .mb-4 { margin-bottom: 2rem; }
        .mb-5 { margin-bottom: 3rem; }
        .mt-1 { margin-top: 0.5rem; }
        .mt-2 { margin-top: 1rem; }
        .mt-3 { margin-top: 1.5rem; }
        .mt-4 { margin-top: 2rem; }
        .gap-2 { gap: 0.75rem; }
        .gap-3 { gap: 1.25rem; }
        .gap-4 { gap: 2rem; }

        /* ===== Section Title ===== */
        .section-header { margin-bottom: 48px; }
        .section-header h2 { position: relative; display: inline-block; }
        .section-header h2::after {
            content: '';
            display: block;
            width: 60px;
            height: 4px;
            background: var(--accent);
            border-radius: 4px;
            margin-top: 12px;
        }
        .section-header.text-center h2::after { margin-left: auto; margin-right: auto; }
        .section-subtitle {
            color: var(--text-light);
            font-size: 1.05rem;
            margin-top: 12px;
            max-width: 640px;
        }
        .section-header.text-center .section-subtitle { margin-left: auto; margin-right: auto; }

        /* ===== Header & Navigation ===== */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            height: var(--header-height);
            background: rgba(13, 27, 42, 0.92);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border-bottom: 1px solid rgba(255,255,255,0.06);
            z-index: 1000;
            transition: background var(--transition), box-shadow var(--transition);
        }
        .site-header.scrolled {
            background: rgba(13, 27, 42, 0.98);
            box-shadow: 0 4px 30px rgba(0,0,0,0.3);
        }
        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 100%;
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 24px;
        }
        .site-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 1.35rem;
            font-weight: 800;
            color: var(--text-white);
            letter-spacing: 0.5px;
        }
        .site-logo .logo-icon {
            width: 36px;
            height: 36px;
            background: var(--accent);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.1rem;
            color: var(--primary);
            flex-shrink: 0;
        }
        .site-logo:hover { color: var(--accent); }
        .site-nav { display: flex; align-items: center; gap: 8px; }
        .site-nav a {
            padding: 8px 18px;
            border-radius: var(--radius-sm);
            color: rgba(255,255,255,0.78);
            font-size: 0.92rem;
            font-weight: 500;
            transition: all var(--transition);
            position: relative;
        }
        .site-nav a:hover { color: var(--text-white); background: rgba(255,255,255,0.08); }
        .site-nav a.active {
            color: var(--accent);
            background: rgba(240, 165, 0, 0.12);
        }
        .site-nav a.active::after {
            content: '';
            position: absolute;
            bottom: 2px;
            left: 50%;
            transform: translateX(-50%);
            width: 20px;
            height: 3px;
            background: var(--accent);
            border-radius: 4px;
        }
        .nav-cta {
            padding: 10px 28px !important;
            background: var(--accent) !important;
            color: var(--primary) !important;
            border-radius: 50px !important;
            font-weight: 700 !important;
            font-size: 0.92rem !important;
            box-shadow: 0 4px 16px rgba(240, 165, 0, 0.3);
            transition: all var(--transition) !important;
        }
        .nav-cta:hover {
            background: var(--accent-hover) !important;
            box-shadow: 0 6px 24px rgba(240, 165, 0, 0.45);
            transform: translateY(-2px);
            color: var(--primary) !important;
        }
        .nav-toggle {
            display: none;
            flex-direction: column;
            gap: 5px;
            padding: 8px;
            cursor: pointer;
            background: none;
            border: none;
        }
        .nav-toggle span {
            display: block;
            width: 26px;
            height: 2.5px;
            background: var(--text-white);
            border-radius: 4px;
            transition: all var(--transition);
        }
        .nav-toggle.open span:nth-child(1) { transform: rotate(45deg) translate(5px, 5px); }
        .nav-toggle.open span:nth-child(2) { opacity: 0; }
        .nav-toggle.open span:nth-child(3) { transform: rotate(-45deg) translate(5px, -5px); }

        @media (max-width: 768px) {
            .nav-toggle { display: flex; }
            .site-nav {
                position: fixed;
                top: var(--header-height);
                left: 0;
                right: 0;
                background: rgba(13, 27, 42, 0.98);
                backdrop-filter: blur(16px);
                flex-direction: column;
                padding: 20px 24px 32px;
                gap: 6px;
                transform: translateY(-120%);
                opacity: 0;
                transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
                border-bottom: 1px solid rgba(255,255,255,0.06);
                box-shadow: 0 20px 40px rgba(0,0,0,0.3);
                pointer-events: none;
            }
            .site-nav.open {
                transform: translateY(0);
                opacity: 1;
                pointer-events: all;
            }
            .site-nav a { padding: 12px 16px; font-size: 1rem; width: 100%; border-radius: var(--radius-sm); }
            .site-nav a.active::after { display: none; }
            .nav-cta { margin-top: 8px; text-align: center; }
        }

        /* ===== Hero ===== */
        .hero {
            position: relative;
            min-height: 100vh;
            display: flex;
            align-items: center;
            padding-top: var(--header-height);
            background: var(--primary-dark);
            overflow: hidden;
        }
        .hero-bg {
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-1.png') center center / cover no-repeat;
            opacity: 0.35;
            z-index: 0;
        }
        .hero-overlay {
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(13,27,42,0.92) 0%, rgba(13,27,42,0.7) 50%, rgba(13,27,42,0.85) 100%);
            z-index: 1;
        }
        .hero-content {
            position: relative;
            z-index: 2;
            max-width: 780px;
            padding: 40px 0;
        }
        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 6px 18px;
            background: rgba(240, 165, 0, 0.15);
            border: 1px solid rgba(240, 165, 0, 0.25);
            border-radius: 50px;
            color: var(--accent);
            font-size: 0.85rem;
            font-weight: 600;
            margin-bottom: 24px;
            letter-spacing: 0.3px;
        }
        .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;
        }
        .hero h1 .highlight { color: var(--accent); }
        .hero p {
            color: rgba(255,255,255,0.7);
            font-size: clamp(1rem, 2vw, 1.2rem);
            max-width: 600px;
            line-height: 1.8;
            margin-bottom: 32px;
        }
        .hero-actions {
            display: flex;
            flex-wrap: wrap;
            gap: 16px;
            align-items: center;
        }
        .btn-primary {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            padding: 14px 36px;
            background: var(--accent);
            color: var(--primary);
            font-weight: 700;
            font-size: 1rem;
            border-radius: 50px;
            box-shadow: 0 4px 20px rgba(240, 165, 0, 0.35);
            transition: all var(--transition);
        }
        .btn-primary:hover {
            background: var(--accent-hover);
            box-shadow: 0 8px 30px rgba(240, 165, 0, 0.5);
            transform: translateY(-3px);
            color: var(--primary);
        }
        .btn-secondary {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            padding: 14px 36px;
            background: rgba(255,255,255,0.08);
            color: var(--text-white);
            font-weight: 600;
            font-size: 1rem;
            border-radius: 50px;
            border: 1px solid rgba(255,255,255,0.15);
            transition: all var(--transition);
        }
        .btn-secondary:hover {
            background: rgba(255,255,255,0.15);
            border-color: rgba(255,255,255,0.3);
            transform: translateY(-3px);
            color: var(--text-white);
        }
        .hero-stats {
            display: flex;
            flex-wrap: wrap;
            gap: 32px;
            margin-top: 48px;
            padding-top: 32px;
            border-top: 1px solid rgba(255,255,255,0.08);
        }
        .hero-stat-item { display: flex; flex-direction: column; }
        .hero-stat-item .num {
            font-size: 1.8rem;
            font-weight: 800;
            color: var(--accent);
            line-height: 1.2;
        }
        .hero-stat-item .label {
            font-size: 0.85rem;
            color: rgba(255,255,255,0.5);
            margin-top: 4px;
        }
        @media (max-width: 768px) {
            .hero { min-height: 80vh; }
            .hero-content { padding: 20px 0; }
            .hero-stats { gap: 24px; }
            .hero-stat-item .num { font-size: 1.4rem; }
        }
        @media (max-width: 520px) {
            .hero { min-height: 70vh; }
            .hero-actions { flex-direction: column; width: 100%; }
            .hero-actions .btn-primary,
            .hero-actions .btn-secondary { width: 100%; justify-content: center; }
        }

        /* ===== Intro Section ===== */
        .intro-section { background: var(--bg); }
        .intro-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 60px;
            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: 400px; object-fit: cover; transition: transform 0.6s ease; }
        .intro-image:hover img { transform: scale(1.03); }
        .intro-image::after {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(13,27,42,0.1) 0%, transparent 60%);
            pointer-events: none;
        }
        .intro-text h2 { margin-bottom: 16px; }
        .intro-text p { color: var(--text-light); margin-bottom: 16px; font-size: 1.02rem; }
        .intro-features {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 12px;
            margin-top: 20px;
        }
        .intro-feature-item {
            display: flex;
            align-items: center;
            gap: 10px;
            padding: 10px 14px;
            background: var(--bg-alt);
            border-radius: var(--radius-sm);
            font-size: 0.92rem;
            font-weight: 500;
        }
        .intro-feature-item i { color: var(--accent); font-size: 0.9rem; }
        @media (max-width: 900px) {
            .intro-grid { grid-template-columns: 1fr; gap: 40px; }
            .intro-image img { height: 280px; }
        }
        @media (max-width: 520px) {
            .intro-features { grid-template-columns: 1fr; }
        }

        /* ===== Categories Section ===== */
        .categories-section { background: var(--bg-alt); }
        .categories-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }
        .category-card {
            background: var(--bg);
            border-radius: var(--radius);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            transition: all var(--transition);
            border: 1px solid var(--border);
        }
        .category-card:hover {
            box-shadow: var(--shadow);
            transform: translateY(-6px);
            border-color: var(--accent);
        }
        .category-card .card-img {
            height: 200px;
            overflow: hidden;
            position: relative;
        }
        .category-card .card-img img { width: 100%; height: 100%; object-fit: cover; transition: transform 0.6s ease; }
        .category-card:hover .card-img img { transform: scale(1.06); }
        .category-card .card-img .card-tag {
            position: absolute;
            top: 14px;
            left: 14px;
            padding: 4px 14px;
            background: rgba(13,27,42,0.75);
            backdrop-filter: blur(6px);
            color: var(--text-white);
            font-size: 0.78rem;
            font-weight: 600;
            border-radius: 50px;
        }
        .category-card .card-body { padding: 20px 22px 24px; }
        .category-card .card-body h3 { margin-bottom: 8px; font-size: 1.15rem; }
        .category-card .card-body p { color: var(--text-light); font-size: 0.92rem; margin-bottom: 14px; }
        .category-card .card-link {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            color: var(--accent);
            font-weight: 600;
            font-size: 0.88rem;
            transition: gap var(--transition);
        }
        .category-card .card-link:hover { gap: 12px; }
        @media (max-width: 900px) {
            .categories-grid { grid-template-columns: repeat(2, 1fr); }
        }
        @media (max-width: 520px) {
            .categories-grid { grid-template-columns: 1fr; }
            .category-card .card-img { height: 180px; }
        }

        /* ===== Features / Data Section ===== */
        .features-section { background: var(--bg); }
        .features-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
        }
        .feature-card {
            background: var(--bg);
            border-radius: var(--radius);
            padding: 32px 24px;
            text-align: center;
            border: 1px solid var(--border);
            transition: all var(--transition);
        }
        .feature-card:hover {
            box-shadow: var(--shadow);
            transform: translateY(-4px);
            border-color: var(--accent);
        }
        .feature-icon {
            width: 60px;
            height: 60px;
            margin: 0 auto 18px;
            background: var(--accent-light);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.5rem;
            color: var(--accent);
            transition: all var(--transition);
        }
        .feature-card:hover .feature-icon { background: var(--accent); color: var(--text-white); }
        .feature-card h4 { margin-bottom: 8px; }
        .feature-card p { color: var(--text-light); font-size: 0.9rem; line-height: 1.6; }
        @media (max-width: 900px) {
            .features-grid { grid-template-columns: repeat(2, 1fr); }
        }
        @media (max-width: 520px) {
            .features-grid { grid-template-columns: 1fr; }
        }

        /* ===== News / CMS List Section ===== */
        .news-section { background: var(--bg-alt); }
        .news-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 24px;
        }
        .news-card {
            background: var(--bg);
            border-radius: var(--radius);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border);
            transition: all var(--transition);
            display: flex;
            flex-direction: column;
        }
        .news-card:hover {
            box-shadow: var(--shadow);
            transform: translateY(-4px);
            border-color: var(--accent);
        }
        .news-card .news-img {
            height: 200px;
            overflow: hidden;
        }
        .news-card .news-img img { width: 100%; height: 100%; object-fit: cover; transition: transform 0.6s ease; }
        .news-card:hover .news-img img { transform: scale(1.05); }
        .news-card .news-body { padding: 20px 22px 24px; flex: 1; display: flex; flex-direction: column; }
        .news-meta {
            display: flex;
            align-items: center;
            gap: 14px;
            font-size: 0.82rem;
            color: var(--text-light);
            margin-bottom: 10px;
        }
        .news-meta .news-category {
            padding: 2px 12px;
            background: var(--accent-light);
            color: var(--accent);
            border-radius: 50px;
            font-weight: 600;
            font-size: 0.75rem;
        }
        .news-meta .news-date { display: flex; align-items: center; gap: 4px; }
        .news-body h3 { font-size: 1.08rem; margin-bottom: 8px; line-height: 1.5; }
        .news-body h3 a { color: var(--primary); }
        .news-body h3 a:hover { color: var(--accent); }
        .news-body p { color: var(--text-light); font-size: 0.9rem; line-height: 1.6; flex: 1; }
        .news-body .read-more {
            margin-top: 14px;
            color: var(--accent);
            font-weight: 600;
            font-size: 0.88rem;
            display: inline-flex;
            align-items: center;
            gap: 6px;
            transition: gap var(--transition);
        }
        .news-body .read-more:hover { gap: 10px; }
        .news-empty {
            grid-column: 1 / -1;
            text-align: center;
            padding: 60px 20px;
            color: var(--text-light);
            font-size: 1.05rem;
            background: var(--bg);
            border-radius: var(--radius);
            border: 1px dashed var(--border);
        }
        @media (max-width: 768px) {
            .news-grid { grid-template-columns: 1fr; }
            .news-card .news-img { height: 180px; }
        }

        /* ===== Process / Steps Section ===== */
        .process-section { background: var(--bg-dark); position: relative; overflow: hidden; }
        .process-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-2.png') center center / cover no-repeat;
            opacity: 0.08;
            pointer-events: none;
        }
        .process-section .container { position: relative; z-index: 1; }
        .process-section .section-header h2 { color: var(--text-white); }
        .process-section .section-subtitle { color: rgba(255,255,255,0.55); }
        .process-steps {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
            margin-top: 16px;
        }
        .step-card {
            text-align: center;
            padding: 32px 20px;
            background: rgba(255,255,255,0.04);
            border-radius: var(--radius);
            border: 1px solid rgba(255,255,255,0.06);
            transition: all var(--transition);
            position: relative;
        }
        .step-card:hover {
            background: rgba(255,255,255,0.08);
            border-color: rgba(240, 165, 0, 0.2);
            transform: translateY(-4px);
        }
        .step-number {
            width: 48px;
            height: 48px;
            margin: 0 auto 16px;
            background: var(--accent);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.2rem;
            font-weight: 800;
            color: var(--primary);
        }
        .step-card h4 { color: var(--text-white); margin-bottom: 8px; font-size: 1.05rem; }
        .step-card p { color: rgba(255,255,255,0.5); font-size: 0.88rem; line-height: 1.6; }
        @media (max-width: 900px) {
            .process-steps { grid-template-columns: repeat(2, 1fr); }
        }
        @media (max-width: 520px) {
            .process-steps { grid-template-columns: 1fr; }
        }

        /* ===== FAQ Section ===== */
        .faq-section { background: var(--bg); }
        .faq-list {
            max-width: 800px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 12px;
        }
        .faq-item {
            background: var(--bg);
            border: 1px solid var(--border);
            border-radius: var(--radius);
            overflow: hidden;
            transition: all var(--transition);
        }
        .faq-item:hover { border-color: var(--accent); }
        .faq-question {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 18px 24px;
            font-size: 1rem;
            font-weight: 600;
            color: var(--text);
            cursor: pointer;
            transition: all var(--transition);
            background: none;
            width: 100%;
            text-align: left;
        }
        .faq-question:hover { color: var(--accent); }
        .faq-question i { transition: transform var(--transition); color: var(--text-light); font-size: 0.85rem; }
        .faq-item.open .faq-question i { transform: rotate(180deg); color: var(--accent); }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.4s ease, padding 0.3s ease;
            padding: 0 24px;
            color: var(--text-light);
            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-item.open .faq-answer { padding: 0 16px 16px; }
        }

        /* ===== CTA Section ===== */
        .cta-section {
            background: var(--bg-dark);
            position: relative;
            overflow: hidden;
        }
        .cta-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-3.png') center center / cover no-repeat;
            opacity: 0.08;
            pointer-events: none;
        }
        .cta-content {
            position: relative;
            z-index: 1;
            text-align: center;
            max-width: 640px;
            margin: 0 auto;
        }
        .cta-content h2 { color: var(--text-white); margin-bottom: 16px; }
        .cta-content p { color: rgba(255,255,255,0.6); font-size: 1.05rem; margin-bottom: 32px; }
        .cta-content .btn-primary { font-size: 1.05rem; padding: 16px 44px; }

        /* ===== Footer ===== */
        .site-footer {
            background: var(--primary-dark);
            border-top: 1px solid rgba(255,255,255,0.05);
            padding: 48px 0 32px;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 40px;
            margin-bottom: 40px;
        }
        .footer-brand .site-logo { color: var(--text-white); margin-bottom: 14px; }
        .footer-brand p { color: rgba(255,255,255,0.45); font-size: 0.9rem; max-width: 320px; line-height: 1.7; }
        .footer-col h5 {
            color: var(--text-white);
            font-size: 0.95rem;
            font-weight: 700;
            margin-bottom: 16px;
        }
        .footer-col a {
            display: block;
            color: rgba(255,255,255,0.5);
            font-size: 0.88rem;
            padding: 5px 0;
            transition: all var(--transition);
        }
        .footer-col a:hover { color: var(--accent); padding-left: 4px; }
        .footer-bottom {
            padding-top: 24px;
            border-top: 1px solid rgba(255,255,255,0.06);
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 12px;
        }
        .footer-bottom p { color: rgba(255,255,255,0.35); font-size: 0.82rem; margin: 0; }
        .footer-bottom-links { display: flex; gap: 20px; }
        .footer-bottom-links a { color: rgba(255,255,255,0.35); font-size: 0.82rem; }
        .footer-bottom-links a:hover { color: var(--accent); }
        @media (max-width: 900px) {
            .footer-grid { grid-template-columns: 1fr 1fr; gap: 32px; }
            .footer-brand { grid-column: 1 / -1; }
        }
        @media (max-width: 520px) {
            .footer-grid { grid-template-columns: 1fr; gap: 24px; }
            .footer-bottom { flex-direction: column; text-align: center; }
        }

        /* ===== Scrollbar ===== */
        ::-webkit-scrollbar { width: 8px; }
        ::-webkit-scrollbar-track { background: var(--primary-dark); }
        ::-webkit-scrollbar-thumb { background: var(--primary-light); border-radius: 10px; }
        ::-webkit-scrollbar-thumb:hover { background: var(--accent); }

        /* ===== Focus & Accessibility ===== */
        a:focus-visible, button:focus-visible, input:focus-visible {
            outline: 2px solid var(--accent);
            outline-offset: 3px;
        }

        /* ===== Animations ===== */
        @keyframes fadeInUp {
            from { opacity: 0; transform: translateY(30px); }
            to { opacity: 1; transform: translateY(0); }
        }
        .animate-in { animation: fadeInUp 0.6s ease forwards; }
        .animate-delay-1 { animation-delay: 0.1s; }
        .animate-delay-2 { animation-delay: 0.2s; }
        .animate-delay-3 { animation-delay: 0.3s; }
        .animate-delay-4 { animation-delay: 0.4s; }

/* roulang page: article */
/* ===== 设计变量 ===== */
        :root {
            --primary: #1e3a5f;
            --primary-light: #2a5298;
            --primary-dark: #0f2440;
            --accent: #f0b429;
            --accent-hover: #d49a1a;
            --accent-light: #fce4a0;
            --bg-body: #f5f7fa;
            --bg-white: #ffffff;
            --bg-card: #ffffff;
            --bg-dark: #0f1a2b;
            --bg-footer: #0f1a2b;
            --text-primary: #1a2332;
            --text-secondary: #4a5568;
            --text-muted: #8896a6;
            --text-light: #e8edf2;
            --border: #e2e8f0;
            --border-light: #f0f2f5;
            --radius: 12px;
            --radius-sm: 8px;
            --radius-lg: 20px;
            --shadow-sm: 0 2px 8px rgba(0,0,0,0.04);
            --shadow-md: 0 8px 24px rgba(0,0,0,0.08);
            --shadow-lg: 0 16px 48px rgba(0,0,0,0.12);
            --shadow-xl: 0 24px 64px rgba(0,0,0,0.16);
            --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', sans-serif;
            --container: 1200px;
            --header-h: 72px;
        }

        /* ===== Reset & Base ===== */
        *, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
        html { scroll-behavior: smooth; -webkit-font-smoothing: antialiased; }
        body {
            font-family: var(--font-sans);
            font-size: 16px;
            line-height: 1.7;
            color: var(--text-primary);
            background: var(--bg-body);
        }
        a { color: var(--primary-light); text-decoration: none; transition: var(--transition); }
        a:hover { color: var(--accent); }
        img { max-width: 100%; height: auto; display: block; }
        button, input, textarea { font-family: inherit; font-size: inherit; }
        ul, ol { list-style: none; }
        h1, h2, h3, h4, h5, h6 { line-height: 1.3; font-weight: 700; color: var(--text-primary); }
        .container {
            width: 100%;
            max-width: var(--container);
            margin: 0 auto;
            padding: 0 24px;
        }

        /* ===== Header / Nav ===== */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: var(--header-h);
            background: rgba(255,255,255,0.92);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border-bottom: 1px solid var(--border);
            z-index: 1000;
            transition: var(--transition);
        }
        .site-header.scrolled { box-shadow: var(--shadow-md); }
        .header-inner {
            max-width: var(--container);
            margin: 0 auto;
            padding: 0 24px;
            height: 100%;
            display: flex;
            align-items: center;
            justify-content: space-between;
        }
        .site-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 1.35rem;
            font-weight: 800;
            color: var(--primary);
            letter-spacing: -0.5px;
        }
        .site-logo:hover { color: var(--primary); }
        .logo-icon {
            display: flex;
            align-items: center;
            justify-content: center;
            width: 38px;
            height: 38px;
            background: var(--accent);
            border-radius: 10px;
            color: var(--primary-dark);
            font-size: 1.1rem;
        }
        .nav-toggle {
            display: none;
            flex-direction: column;
            gap: 5px;
            background: none;
            border: none;
            cursor: pointer;
            padding: 8px 4px;
        }
        .nav-toggle span {
            display: block;
            width: 26px;
            height: 2.5px;
            background: var(--text-primary);
            border-radius: 4px;
            transition: var(--transition);
        }
        .nav-toggle.active span:nth-child(1) { transform: translateY(7.5px) rotate(45deg); }
        .nav-toggle.active span:nth-child(2) { opacity: 0; }
        .nav-toggle.active span:nth-child(3) { transform: translateY(-7.5px) rotate(-45deg); }
        .site-nav {
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .site-nav a {
            padding: 8px 18px;
            border-radius: var(--radius-sm);
            font-size: 0.95rem;
            font-weight: 500;
            color: var(--text-secondary);
            transition: var(--transition);
            position: relative;
        }
        .site-nav a:hover { color: var(--primary); background: rgba(30,58,95,0.06); }
        .site-nav a.active {
            color: var(--primary);
            background: rgba(30,58,95,0.08);
            font-weight: 600;
        }
        .site-nav a.active::after {
            content: '';
            position: absolute;
            bottom: 2px;
            left: 50%;
            transform: translateX(-50%);
            width: 20px;
            height: 3px;
            background: var(--accent);
            border-radius: 4px;
        }
        .site-nav a.nav-cta {
            background: var(--accent);
            color: var(--primary-dark);
            font-weight: 700;
            padding: 10px 24px;
            border-radius: var(--radius-sm);
            display: flex;
            align-items: center;
            gap: 8px;
            margin-left: 8px;
        }
        .site-nav a.nav-cta:hover {
            background: var(--accent-hover);
            color: var(--primary-dark);
            transform: translateY(-1px);
            box-shadow: var(--shadow-md);
        }

        /* ===== Hero Banner (文章页顶部) ===== */
        .article-hero {
            margin-top: var(--header-h);
            padding: 60px 0 50px;
            background: linear-gradient(135deg, var(--primary-dark) 0%, var(--primary) 60%, var(--primary-light) 100%);
            position: relative;
            overflow: hidden;
        }
        .article-hero::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;
        }
        .article-hero .container { position: relative; z-index: 2; }
        .article-hero .breadcrumb {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 0.9rem;
            color: rgba(255,255,255,0.7);
            margin-bottom: 16px;
        }
        .article-hero .breadcrumb a { color: rgba(255,255,255,0.7); }
        .article-hero .breadcrumb a:hover { color: var(--accent); }
        .article-hero .breadcrumb .sep { color: rgba(255,255,255,0.4); }
        .article-hero h1 {
            font-size: 2.4rem;
            color: #fff;
            max-width: 900px;
            line-height: 1.3;
            margin-bottom: 16px;
            text-shadow: 0 2px 12px rgba(0,0,0,0.2);
        }
        .article-hero .meta-line {
            display: flex;
            flex-wrap: wrap;
            gap: 18px;
            align-items: center;
            color: rgba(255,255,255,0.8);
            font-size: 0.95rem;
        }
        .article-hero .meta-line i { margin-right: 6px; }
        .article-hero .meta-line .tag {
            display: inline-block;
            padding: 4px 14px;
            background: var(--accent);
            color: var(--primary-dark);
            border-radius: 20px;
            font-size: 0.8rem;
            font-weight: 700;
        }

        /* ===== 文章主体 ===== */
        .article-main {
            padding: 50px 0 70px;
        }
        .article-layout {
            display: grid;
            grid-template-columns: 1fr 320px;
            gap: 48px;
        }
        .article-content {
            background: var(--bg-white);
            border-radius: var(--radius);
            padding: 40px 44px;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border-light);
        }
        .article-content .body-text {
            font-size: 1.05rem;
            line-height: 1.85;
            color: var(--text-secondary);
        }
        .article-content .body-text p {
            margin-bottom: 1.2em;
        }
        .article-content .body-text h2, 
        .article-content .body-text h3 {
            margin-top: 1.6em;
            margin-bottom: 0.6em;
            color: var(--text-primary);
        }
        .article-content .body-text h2 { font-size: 1.6rem; }
        .article-content .body-text h3 { font-size: 1.25rem; }
        .article-content .body-text ul, 
        .article-content .body-text ol {
            margin: 1em 0;
            padding-left: 1.6em;
        }
        .article-content .body-text ul li { list-style: disc; margin-bottom: 0.4em; }
        .article-content .body-text ol li { list-style: decimal; margin-bottom: 0.4em; }
        .article-content .body-text img {
            border-radius: var(--radius-sm);
            margin: 1.5em 0;
            box-shadow: var(--shadow-sm);
        }
        .article-content .body-text blockquote {
            border-left: 4px solid var(--accent);
            padding: 12px 20px;
            margin: 1.2em 0;
            background: rgba(240,180,41,0.06);
            border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
            color: var(--text-secondary);
            font-style: italic;
        }
        .article-content .body-text a { color: var(--primary-light); text-decoration: underline; }
        .article-content .body-text a:hover { color: var(--accent); }

        .article-not-found {
            text-align: center;
            padding: 60px 20px;
        }
        .article-not-found i { font-size: 3rem; color: var(--text-muted); margin-bottom: 20px; }
        .article-not-found h2 { font-size: 1.8rem; color: var(--text-primary); margin-bottom: 12px; }
        .article-not-found p { color: var(--text-secondary); margin-bottom: 24px; }
        .article-not-found .btn-back {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 12px 32px;
            background: var(--primary);
            color: #fff;
            border-radius: var(--radius-sm);
            font-weight: 600;
            transition: var(--transition);
        }
        .article-not-found .btn-back:hover { background: var(--primary-light); color: #fff; transform: translateY(-2px); box-shadow: var(--shadow-md); }

        /* ===== 侧边栏 ===== */
        .article-sidebar {
            display: flex;
            flex-direction: column;
            gap: 28px;
        }
        .sidebar-card {
            background: var(--bg-white);
            border-radius: var(--radius);
            padding: 24px 28px;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border-light);
        }
        .sidebar-card h4 {
            font-size: 1.1rem;
            margin-bottom: 16px;
            display: flex;
            align-items: center;
            gap: 8px;
            color: var(--primary);
        }
        .sidebar-card h4 i { color: var(--accent); }
        .sidebar-card ul li {
            padding: 10px 0;
            border-bottom: 1px solid var(--border-light);
        }
        .sidebar-card ul li:last-child { border-bottom: none; }
        .sidebar-card ul li a {
            display: flex;
            align-items: flex-start;
            gap: 10px;
            color: var(--text-secondary);
            font-size: 0.95rem;
            line-height: 1.4;
        }
        .sidebar-card ul li a:hover { color: var(--primary); }
        .sidebar-card ul li a .num {
            flex-shrink: 0;
            width: 26px;
            height: 26px;
            display: flex;
            align-items: center;
            justify-content: center;
            background: var(--bg-body);
            border-radius: 6px;
            font-size: 0.8rem;
            font-weight: 700;
            color: var(--text-muted);
        }
        .sidebar-card ul li a .num.top { background: var(--accent); color: var(--primary-dark); }
        .sidebar-card .cta-box {
            margin-top: 16px;
            padding: 18px;
            background: linear-gradient(135deg, var(--primary-dark), var(--primary));
            border-radius: var(--radius-sm);
            text-align: center;
            color: #fff;
        }
        .sidebar-card .cta-box p { margin-bottom: 12px; font-size: 0.95rem; opacity: 0.9; }
        .sidebar-card .cta-box .btn-cta {
            display: inline-block;
            padding: 10px 28px;
            background: var(--accent);
            color: var(--primary-dark);
            border-radius: var(--radius-sm);
            font-weight: 700;
            transition: var(--transition);
        }
        .sidebar-card .cta-box .btn-cta:hover { background: var(--accent-hover); transform: translateY(-2px); box-shadow: var(--shadow-md); color: var(--primary-dark); }

        /* ===== 相关文章 ===== */
        .related-section {
            margin-top: 50px;
            padding-top: 40px;
            border-top: 1px solid var(--border);
        }
        .related-section h3 {
            font-size: 1.4rem;
            margin-bottom: 28px;
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .related-section h3 i { color: var(--accent); }
        .related-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }
        .related-card {
            background: var(--bg-white);
            border-radius: var(--radius);
            overflow: hidden;
            border: 1px solid var(--border-light);
            transition: var(--transition);
            box-shadow: var(--shadow-sm);
        }
        .related-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-lg); }
        .related-card .card-img {
            width: 100%;
            height: 180px;
            object-fit: cover;
        }
        .related-card .card-body {
            padding: 18px 20px;
        }
        .related-card .card-body h4 {
            font-size: 1rem;
            margin-bottom: 8px;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .related-card .card-body h4 a { color: var(--text-primary); }
        .related-card .card-body h4 a:hover { color: var(--primary); }
        .related-card .card-body .meta {
            font-size: 0.85rem;
            color: var(--text-muted);
            display: flex;
            align-items: center;
            gap: 12px;
        }

        /* ===== Footer ===== */
        .site-footer {
            background: var(--bg-footer);
            color: rgba(255,255,255,0.8);
            padding: 60px 0 30px;
        }
        .site-footer .site-logo { color: #fff; margin-bottom: 16px; }
        .site-footer .site-logo:hover { color: #fff; }
        .footer-grid {
            display: grid;
            grid-template-columns: 1.6fr 1fr 1fr 1fr;
            gap: 40px;
            margin-bottom: 40px;
        }
        .footer-brand p { font-size: 0.95rem; line-height: 1.7; color: rgba(255,255,255,0.6); margin-top: 12px; }
        .footer-col h5 {
            color: #fff;
            font-size: 1rem;
            font-weight: 600;
            margin-bottom: 18px;
        }
        .footer-col a {
            display: block;
            padding: 6px 0;
            color: rgba(255,255,255,0.6);
            font-size: 0.9rem;
            transition: var(--transition);
        }
        .footer-col a:hover { color: var(--accent); padding-left: 4px; }
        .footer-bottom {
            border-top: 1px solid rgba(255,255,255,0.08);
            padding-top: 24px;
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 12px;
            font-size: 0.85rem;
            color: rgba(255,255,255,0.5);
        }
        .footer-bottom a { color: rgba(255,255,255,0.5); }
        .footer-bottom a:hover { color: var(--accent); }
        .footer-bottom-links { display: flex; gap: 20px; }

        /* ===== 响应式 ===== */
        @media (max-width: 1024px) {
            .article-layout { grid-template-columns: 1fr; }
            .related-grid { grid-template-columns: repeat(2, 1fr); }
            .footer-grid { grid-template-columns: 1fr 1fr; }
        }
        @media (max-width: 768px) {
            .nav-toggle { display: flex; }
            .site-nav {
                position: absolute;
                top: var(--header-h);
                left: 0;
                width: 100%;
                background: rgba(255,255,255,0.98);
                backdrop-filter: blur(16px);
                flex-direction: column;
                padding: 16px 24px;
                border-bottom: 1px solid var(--border);
                box-shadow: var(--shadow-lg);
                display: none;
            }
            .site-nav.open { display: flex; }
            .site-nav a { width: 100%; padding: 12px 16px; }
            .site-nav a.nav-cta { margin-left: 0; justify-content: center; }
            .site-nav a.active::after { display: none; }
            .article-hero h1 { font-size: 1.8rem; }
            .article-content { padding: 28px 20px; }
            .related-grid { grid-template-columns: 1fr; }
            .footer-grid { grid-template-columns: 1fr; gap: 28px; }
            .footer-bottom { flex-direction: column; text-align: center; }
            .article-hero { padding: 40px 0 36px; }
            .article-main { padding: 30px 0 50px; }
        }
        @media (max-width: 520px) {
            .article-hero h1 { font-size: 1.4rem; }
            .article-content .body-text { font-size: 0.98rem; }
            .article-content { padding: 20px 16px; }
            .sidebar-card { padding: 18px 16px; }
            .header-inner { padding: 0 16px; }
            .container { padding: 0 16px; }
        }

        /* ===== 辅助 ===== */
        .text-center { text-align: center; }
        .mt-2 { margin-top: 12px; }
        .mb-2 { margin-bottom: 12px; }
        .gap-1 { gap: 8px; }
        .flex { display: flex; }
        .flex-wrap { flex-wrap: wrap; }
        .items-center { align-items: center; }

/* roulang page: category1 */
/* ===== Design Variables ===== */
        :root {
            --primary: #e50914;
            --primary-dark: #b20710;
            --primary-light: #ff4757;
            --secondary: #0a0a23;
            --secondary-light: #1a1a3e;
            --accent: #ffd700;
            --accent-hover: #ffed4a;
            --bg-dark: #0d0d1a;
            --bg-card: #16162a;
            --bg-card-hover: #1e1e3a;
            --bg-section: #111125;
            --text-primary: #ffffff;
            --text-secondary: #c0c0d0;
            --text-muted: #8888a0;
            --border-color: #2a2a4a;
            --border-light: #3a3a5a;
            --radius-sm: 8px;
            --radius-md: 16px;
            --radius-lg: 24px;
            --radius-xl: 32px;
            --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.3);
            --shadow-md: 0 8px 32px rgba(0, 0, 0, 0.4);
            --shadow-lg: 0 16px 48px rgba(0, 0, 0, 0.5);
            --shadow-glow: 0 0 30px rgba(229, 9, 20, 0.3);
            --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            --font-sans: 'Segoe UI', system-ui, -apple-system, sans-serif;
            --container-max: 1200px;
            --header-height: 72px;
        }

        /* ===== Reset & Base ===== */
        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }

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

        body {
            font-family: var(--font-sans);
            font-size: 16px;
            line-height: 1.7;
            color: var(--text-primary);
            background: var(--bg-dark);
            min-height: 100vh;
        }

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

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

        button,
        input {
            font-family: inherit;
            font-size: inherit;
            border: none;
            outline: none;
            background: none;
            color: inherit;
        }

        button {
            cursor: pointer;
        }

        ul,
        ol {
            list-style: none;
        }

        h1,
        h2,
        h3,
        h4,
        h5,
        h6 {
            line-height: 1.3;
            font-weight: 700;
            color: var(--text-primary);
        }

        h1 {
            font-size: clamp(2.2rem, 5vw, 3.8rem);
        }
        h2 {
            font-size: clamp(1.8rem, 3.5vw, 2.8rem);
        }
        h3 {
            font-size: clamp(1.3rem, 2.5vw, 1.8rem);
        }
        h4 {
            font-size: clamp(1.1rem, 1.8vw, 1.4rem);
        }
        h5 {
            font-size: 1.1rem;
        }

        p {
            color: var(--text-secondary);
            margin-bottom: 1rem;
        }

        /* ===== Container ===== */
        .container {
            max-width: var(--container-max);
            margin: 0 auto;
            padding: 0 24px;
        }

        @media (min-width: 768px) {
            .container {
                padding: 0 40px;
            }
        }

        @media (min-width: 1200px) {
            .container {
                padding: 0 60px;
            }
        }

        /* ===== Header / Nav ===== */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            height: var(--header-height);
            background: rgba(13, 13, 26, 0.92);
            backdrop-filter: blur(20px);
            -webkit-backdrop-filter: blur(20px);
            border-bottom: 1px solid var(--border-color);
            transition: var(--transition);
        }

        .site-header.scrolled {
            background: rgba(13, 13, 26, 0.98);
            box-shadow: var(--shadow-md);
        }

        .header-inner {
            max-width: var(--container-max);
            margin: 0 auto;
            padding: 0 24px;
            height: 100%;
            display: flex;
            align-items: center;
            justify-content: space-between;
        }

        @media (min-width: 768px) {
            .header-inner {
                padding: 0 40px;
            }
        }

        .site-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 1.4rem;
            font-weight: 800;
            color: var(--text-primary);
            letter-spacing: -0.5px;
        }

        .site-logo .logo-icon {
            display: flex;
            align-items: center;
            justify-content: center;
            width: 40px;
            height: 40px;
            background: linear-gradient(135deg, var(--primary), var(--primary-light));
            border-radius: 10px;
            color: #fff;
            font-size: 1.1rem;
            box-shadow: 0 4px 16px rgba(229, 9, 20, 0.4);
        }

        .nav-toggle {
            display: none;
            flex-direction: column;
            gap: 5px;
            padding: 8px;
            cursor: pointer;
            z-index: 1001;
        }

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

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

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

        .site-nav a {
            padding: 8px 18px;
            border-radius: var(--radius-sm);
            font-size: 0.95rem;
            font-weight: 500;
            color: var(--text-secondary);
            transition: var(--transition);
            position: relative;
        }

        .site-nav a:hover {
            color: var(--text-primary);
            background: rgba(255, 255, 255, 0.06);
        }

        .site-nav a.active {
            color: var(--text-primary);
            background: rgba(229, 9, 20, 0.15);
        }

        .site-nav a.active::after {
            content: '';
            position: absolute;
            bottom: 2px;
            left: 50%;
            transform: translateX(-50%);
            width: 20px;
            height: 3px;
            background: var(--primary);
            border-radius: 4px;
        }

        .site-nav a.nav-cta {
            background: linear-gradient(135deg, var(--primary), var(--primary-dark));
            color: #fff;
            padding: 10px 24px;
            border-radius: 50px;
            font-weight: 600;
            display: flex;
            align-items: center;
            gap: 8px;
            box-shadow: 0 4px 20px rgba(229, 9, 20, 0.35);
            margin-left: 8px;
        }

        .site-nav a.nav-cta:hover {
            transform: translateY(-2px);
            box-shadow: 0 8px 30px rgba(229, 9, 20, 0.5);
            background: linear-gradient(135deg, var(--primary-light), var(--primary));
        }

        .site-nav a.nav-cta i {
            font-size: 1.1rem;
        }

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

            .site-nav {
                position: fixed;
                top: 0;
                right: -100%;
                width: 280px;
                height: 100vh;
                background: var(--secondary);
                flex-direction: column;
                align-items: stretch;
                padding: 80px 24px 40px;
                gap: 4px;
                transition: right 0.4s cubic-bezier(0.4, 0, 0.2, 1);
                box-shadow: -8px 0 40px rgba(0, 0, 0, 0.6);
                border-left: 1px solid var(--border-color);
                overflow-y: auto;
            }

            .site-nav.open {
                right: 0;
            }

            .site-nav a {
                padding: 14px 20px;
                font-size: 1.05rem;
                border-radius: var(--radius-sm);
            }

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

            .site-nav a.active {
                background: rgba(229, 9, 20, 0.2);
                border-left: 4px solid var(--primary);
            }

            .site-nav a.nav-cta {
                margin-left: 0;
                margin-top: 12px;
                justify-content: center;
                padding: 14px 24px;
            }
        }

        /* ===== Breadcrumb ===== */
        .breadcrumb-bar {
            padding: calc(var(--header-height) + 24px) 0 16px;
            background: var(--bg-section);
            border-bottom: 1px solid var(--border-color);
        }

        .breadcrumb-bar .container {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 0.9rem;
            color: var(--text-muted);
        }

        .breadcrumb-bar a {
            color: var(--text-muted);
            transition: var(--transition);
        }
        .breadcrumb-bar a:hover {
            color: var(--primary);
        }
        .breadcrumb-bar .sep {
            color: var(--border-light);
        }
        .breadcrumb-bar .current {
            color: var(--text-secondary);
            font-weight: 500;
        }

        /* ===== Page Hero / Banner ===== */
        .page-banner {
            position: relative;
            padding: 80px 0 100px;
            background: var(--bg-section);
            overflow: hidden;
            min-height: 380px;
            display: flex;
            align-items: center;
        }

        .page-banner::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-1.png') center center / cover no-repeat;
            opacity: 0.25;
            transform: scale(1.05);
            animation: bannerZoom 20s ease-in-out infinite alternate;
        }

        @keyframes bannerZoom {
            0% {
                transform: scale(1.05);
            }
            100% {
                transform: scale(1.15);
            }
        }

        .page-banner::after {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(13, 13, 26, 0.92) 0%, rgba(13, 13, 26, 0.6) 50%, rgba(229, 9, 20, 0.15) 100%);
            z-index: 1;
        }

        .page-banner .container {
            position: relative;
            z-index: 2;
        }

        .page-banner .banner-tag {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 6px 16px;
            background: rgba(229, 9, 20, 0.2);
            border: 1px solid rgba(229, 9, 20, 0.3);
            border-radius: 50px;
            font-size: 0.85rem;
            font-weight: 500;
            color: var(--primary-light);
            margin-bottom: 20px;
            backdrop-filter: blur(10px);
        }

        .page-banner .banner-tag i {
            font-size: 0.8rem;
        }

        .page-banner h1 {
            font-size: clamp(2.2rem, 5vw, 3.6rem);
            font-weight: 900;
            line-height: 1.15;
            margin-bottom: 20px;
            background: linear-gradient(135deg, #ffffff 0%, #c0c0d0 100%);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }

        .page-banner p {
            font-size: clamp(1rem, 1.8vw, 1.2rem);
            color: var(--text-secondary);
            max-width: 680px;
            line-height: 1.8;
            margin-bottom: 28px;
        }

        .page-banner .banner-actions {
            display: flex;
            flex-wrap: wrap;
            gap: 16px;
            margin-top: 8px;
        }

        .page-banner .btn-primary {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            padding: 14px 32px;
            background: linear-gradient(135deg, var(--primary), var(--primary-dark));
            color: #fff;
            border-radius: 50px;
            font-weight: 600;
            font-size: 1.05rem;
            box-shadow: 0 4px 24px rgba(229, 9, 20, 0.4);
            transition: var(--transition);
        }

        .page-banner .btn-primary:hover {
            transform: translateY(-3px);
            box-shadow: 0 8px 36px rgba(229, 9, 20, 0.55);
        }

        .page-banner .btn-secondary {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            padding: 14px 32px;
            background: rgba(255, 255, 255, 0.08);
            color: var(--text-primary);
            border: 1px solid var(--border-light);
            border-radius: 50px;
            font-weight: 500;
            font-size: 1.05rem;
            transition: var(--transition);
            backdrop-filter: blur(10px);
        }

        .page-banner .btn-secondary:hover {
            background: rgba(255, 255, 255, 0.15);
            border-color: var(--text-muted);
            transform: translateY(-3px);
        }

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

        .section-header {
            text-align: center;
            margin-bottom: 52px;
        }

        .section-header .section-label {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 6px 16px;
            background: rgba(229, 9, 20, 0.1);
            border: 1px solid rgba(229, 9, 20, 0.2);
            border-radius: 50px;
            font-size: 0.85rem;
            font-weight: 500;
            color: var(--primary-light);
            margin-bottom: 16px;
        }

        .section-header h2 {
            font-weight: 800;
            margin-bottom: 12px;
        }

        .section-header p {
            max-width: 600px;
            margin: 0 auto;
            color: var(--text-muted);
            font-size: 1.05rem;
        }

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

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

        /* ===== Sports Category Cards ===== */
        .sports-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
            gap: 24px;
        }

        .sport-card {
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-md);
            padding: 32px 24px 28px;
            text-align: center;
            transition: var(--transition);
            position: relative;
            overflow: hidden;
        }

        .sport-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 4px;
            background: linear-gradient(90deg, var(--primary), var(--accent));
            opacity: 0;
            transition: var(--transition);
        }

        .sport-card:hover {
            transform: translateY(-6px);
            border-color: var(--border-light);
            box-shadow: var(--shadow-lg);
            background: var(--bg-card-hover);
        }

        .sport-card:hover::before {
            opacity: 1;
        }

        .sport-card .card-icon {
            width: 64px;
            height: 64px;
            margin: 0 auto 18px;
            background: rgba(229, 9, 20, 0.1);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.8rem;
            color: var(--primary-light);
            transition: var(--transition);
        }

        .sport-card:hover .card-icon {
            background: rgba(229, 9, 20, 0.2);
            transform: scale(1.1);
        }

        .sport-card h3 {
            font-size: 1.25rem;
            margin-bottom: 8px;
        }

        .sport-card p {
            font-size: 0.92rem;
            color: var(--text-muted);
            margin-bottom: 16px;
        }

        .sport-card .card-tag {
            display: inline-block;
            padding: 4px 14px;
            background: rgba(255, 255, 255, 0.06);
            border-radius: 50px;
            font-size: 0.8rem;
            color: var(--text-muted);
            border: 1px solid var(--border-color);
        }

        .sport-card .card-link {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            margin-top: 16px;
            font-size: 0.9rem;
            font-weight: 500;
            color: var(--primary-light);
            transition: var(--transition);
        }

        .sport-card .card-link:hover {
            gap: 10px;
            color: var(--accent);
        }

        /* ===== Step Guide ===== */
        .steps-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
            gap: 28px;
            counter-reset: step;
        }

        .step-card {
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-md);
            padding: 32px 24px;
            position: relative;
            transition: var(--transition);
        }

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

        .step-card .step-number {
            counter-increment: step;
            width: 44px;
            height: 44px;
            background: linear-gradient(135deg, var(--primary), var(--primary-dark));
            border-radius: 12px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.2rem;
            font-weight: 800;
            color: #fff;
            margin-bottom: 18px;
            box-shadow: 0 4px 16px rgba(229, 9, 20, 0.3);
        }

        .step-card .step-number::after {
            content: counter(step);
        }

        .step-card h4 {
            font-size: 1.1rem;
            margin-bottom: 8px;
        }

        .step-card p {
            font-size: 0.9rem;
            color: var(--text-muted);
            margin-bottom: 0;
        }

        /* ===== Featured Content Cards ===== */
        .featured-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
            gap: 28px;
        }

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

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

        .featured-card .card-img {
            height: 200px;
            background-size: cover;
            background-position: center;
            position: relative;
            overflow: hidden;
        }

        .featured-card .card-img .img-overlay {
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, transparent 40%, rgba(13, 13, 26, 0.8) 100%);
        }

        .featured-card .card-img .badge {
            position: absolute;
            top: 16px;
            left: 16px;
            padding: 4px 14px;
            background: var(--primary);
            color: #fff;
            border-radius: 50px;
            font-size: 0.8rem;
            font-weight: 600;
        }

        .featured-card .card-body {
            padding: 24px;
        }

        .featured-card .card-body .meta {
            display: flex;
            align-items: center;
            gap: 16px;
            font-size: 0.85rem;
            color: var(--text-muted);
            margin-bottom: 10px;
        }

        .featured-card .card-body .meta i {
            margin-right: 4px;
        }

        .featured-card .card-body h3 {
            font-size: 1.15rem;
            margin-bottom: 8px;
        }

        .featured-card .card-body p {
            font-size: 0.92rem;
            color: var(--text-muted);
            margin-bottom: 16px;
        }

        .featured-card .card-body .read-more {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-weight: 500;
            color: var(--primary-light);
            font-size: 0.9rem;
        }

        .featured-card .card-body .read-more:hover {
            gap: 10px;
            color: var(--accent);
        }

        /* ===== FAQ ===== */
        .faq-list {
            max-width: 820px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 12px;
        }

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

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

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

        .faq-item .faq-question:hover {
            background: rgba(255, 255, 255, 0.03);
        }

        .faq-item .faq-question .icon {
            width: 24px;
            height: 24px;
            display: flex;
            align-items: center;
            justify-content: center;
            border-radius: 50%;
            background: rgba(229, 9, 20, 0.1);
            color: var(--primary-light);
            font-size: 0.8rem;
            flex-shrink: 0;
            transition: var(--transition);
        }

        .faq-item.active .faq-question .icon {
            transform: rotate(180deg);
            background: var(--primary);
            color: #fff;
        }

        .faq-item .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.4s ease, padding 0.4s ease;
            padding: 0 24px;
        }

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

        .faq-item .faq-answer p {
            font-size: 0.95rem;
            color: var(--text-muted);
            margin-bottom: 0;
            line-height: 1.8;
        }

        /* ===== CTA Section ===== */
        .cta-section {
            padding: 80px 0;
            background: var(--bg-section);
            position: relative;
            overflow: hidden;
        }

        .cta-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-2.png') center center / cover no-repeat;
            opacity: 0.1;
        }

        .cta-section .container {
            position: relative;
            z-index: 1;
            text-align: center;
        }

        .cta-section h2 {
            font-size: clamp(1.8rem, 3.5vw, 2.8rem);
            font-weight: 800;
            margin-bottom: 16px;
        }

        .cta-section p {
            max-width: 560px;
            margin: 0 auto 32px;
            color: var(--text-muted);
            font-size: 1.1rem;
        }

        .cta-section .cta-btn {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            padding: 16px 40px;
            background: linear-gradient(135deg, var(--primary), var(--primary-dark));
            color: #fff;
            border-radius: 50px;
            font-weight: 700;
            font-size: 1.1rem;
            box-shadow: 0 6px 32px rgba(229, 9, 20, 0.4);
            transition: var(--transition);
        }

        .cta-section .cta-btn:hover {
            transform: translateY(-4px);
            box-shadow: 0 12px 48px rgba(229, 9, 20, 0.55);
        }

        .cta-section .cta-btn i {
            font-size: 1.2rem;
        }

        /* ===== Footer ===== */
        .site-footer {
            background: var(--secondary);
            border-top: 1px solid var(--border-color);
            padding: 60px 0 0;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 1.5fr 1fr 1fr 1fr;
            gap: 40px;
            padding-bottom: 40px;
            border-bottom: 1px solid var(--border-color);
        }

        @media (max-width: 992px) {
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 32px;
            }
            .footer-brand {
                grid-column: 1 / -1;
            }
        }

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

        .footer-brand .site-logo {
            font-size: 1.3rem;
            margin-bottom: 16px;
        }

        .footer-brand p {
            font-size: 0.92rem;
            color: var(--text-muted);
            max-width: 360px;
            line-height: 1.8;
        }

        .footer-col h5 {
            font-size: 1rem;
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: 16px;
        }

        .footer-col a {
            display: block;
            padding: 6px 0;
            font-size: 0.92rem;
            color: var(--text-muted);
            transition: var(--transition);
        }

        .footer-col a:hover {
            color: var(--primary-light);
            padding-left: 4px;
        }

        .footer-col a i {
            margin-right: 8px;
            width: 18px;
            text-align: center;
            color: var(--primary-light);
        }

        .footer-bottom {
            padding: 24px 0;
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            font-size: 0.85rem;
            color: var(--text-muted);
        }

        .footer-bottom p {
            margin-bottom: 0;
            font-size: 0.85rem;
        }

        .footer-bottom a {
            color: var(--text-muted);
            transition: var(--transition);
        }
        .footer-bottom a:hover {
            color: var(--primary-light);
        }

        .footer-bottom-links {
            display: flex;
            gap: 20px;
        }

        .footer-bottom-links a {
            font-size: 0.85rem;
        }

        @media (max-width: 520px) {
            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
            .footer-bottom-links {
                flex-wrap: wrap;
                justify-content: center;
            }
        }

        /* ===== Responsive Fine-tune ===== */
        @media (max-width: 768px) {
            .section {
                padding: 56px 0;
            }
            .page-banner {
                padding: 60px 0 80px;
                min-height: 300px;
            }
            .sports-grid {
                grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
            }
            .steps-grid {
                grid-template-columns: 1fr 1fr;
            }
            .featured-grid {
                grid-template-columns: 1fr;
            }
            .section-header {
                margin-bottom: 36px;
            }
        }

        @media (max-width: 520px) {
            .page-banner {
                padding: 50px 0 60px;
                min-height: 260px;
            }
            .sports-grid {
                grid-template-columns: 1fr;
            }
            .steps-grid {
                grid-template-columns: 1fr;
            }
            .page-banner .banner-actions {
                flex-direction: column;
            }
            .page-banner .btn-primary,
            .page-banner .btn-secondary {
                width: 100%;
                justify-content: center;
            }
            .cta-section .cta-btn {
                width: 100%;
                justify-content: center;
            }
        }

        /* ===== Accessibility ===== */
        a:focus-visible,
        button:focus-visible {
            outline: 2px solid var(--primary-light);
            outline-offset: 3px;
        }

        /* ===== Scrollbar ===== */
        ::-webkit-scrollbar {
            width: 8px;
        }
        ::-webkit-scrollbar-track {
            background: var(--bg-dark);
        }
        ::-webkit-scrollbar-thumb {
            background: var(--border-color);
            border-radius: 10px;
        }
        ::-webkit-scrollbar-thumb:hover {
            background: var(--border-light);
        }

        /* ===== Animations ===== */
        @keyframes fadeInUp {
            from {
                opacity: 0;
                transform: translateY(30px);
            }
            to {
                opacity: 1;
                transform: translateY(0);
            }
        }

        .anim-fade-in {
            animation: fadeInUp 0.7s ease forwards;
        }

        .delay-1 {
            animation-delay: 0.1s;
        }
        .delay-2 {
            animation-delay: 0.2s;
        }
        .delay-3 {
            animation-delay: 0.3s;
        }
        .delay-4 {
            animation-delay: 0.4s;
        }