/* roulang page: index */
:root {
            --primary: #7c5cff;
            --primary-light: #9d86ff;
            --secondary: #00f0ff;
            --accent: #ff3366;
            --dark-bg: #0b0b1a;
            --dark-panel: #131328;
            --dark-card: #1a1a35;
            --text-main: #f0f0f8;
            --text-muted: #a7a9be;
            --border-subtle: rgba(255,255,255,0.08);
            --border-glow: rgba(124,92,255,0.35);
            --radius-lg: 20px;
            --radius-md: 14px;
            --radius-sm: 8px;
            --shadow-main: 0 10px 40px rgba(0,0,0,0.45);
            --shadow-glow: 0 0 30px rgba(124,92,255,0.25);
            --gradient-primary: linear-gradient(135deg, #7c5cff 0%, #00f0ff 100%);
            --transition-base: all 0.3s ease;
        }
        * { box-sizing: border-box; margin: 0; padding: 0; }
        html { scroll-behavior: smooth; }
        body {
            font-family: -apple-system, "PingFang SC", "Microsoft YaHei", "Noto Sans CJK SC", sans-serif;
            background-color: var(--dark-bg);
            color: var(--text-main);
            line-height: 1.7;
            overflow-x: hidden;
        }
        a { color: var(--secondary); text-decoration: none; transition: var(--transition-base); }
        a:hover { color: var(--primary-light); }
        img { max-width: 100%; height: auto; }
        button, input { font-family: inherit; }
        .container-custom {
            width: 100%;
            max-width: 1280px;
            margin: 0 auto;
            padding: 0 24px;
        }
        .site-header {
            position: sticky;
            top: 0;
            z-index: 1000;
            background: rgba(11, 11, 26, 0.92);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border-bottom: 1px solid var(--border-subtle);
            padding: 14px 0;
            transition: var(--transition-base);
        }
        .site-header.scrolled { box-shadow: 0 4px 30px rgba(0,0,0,0.5); background: rgba(11,11,26,0.97); }
        .nav-container { display: flex; align-items: center; justify-content: space-between; gap: 24px; }
        .logo-area { display: flex; align-items: center; gap: 10px; flex-shrink: 0; }
        .logo-icon {
            width: 40px; height: 40px; border-radius: 12px;
            background: var(--gradient-primary);
            display: flex; align-items: center; justify-content: center;
            font-size: 18px; font-weight: 800; color: #fff;
            box-shadow: var(--shadow-glow);
        }
        .logo-text {
            font-size: 22px; font-weight: 800; color: var(--text-main);
            letter-spacing: 0.5px;
            background: var(--gradient-primary);
            -webkit-background-clip: text; -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .nav-menu { display: flex; align-items: center; gap: 28px; margin: 0; padding: 0; list-style: none; }
        .nav-menu a { color: var(--text-muted); font-size: 15px; font-weight: 500; padding: 8px 0; position: relative; background: none; border: none; }
        .nav-menu a::after {
            content: ''; position: absolute; left: 0; bottom: 0; width: 0; height: 2px;
            background: var(--gradient-primary); border-radius: 2px; transition: var(--transition-base);
        }
        .nav-menu a:hover, .nav-menu a.active { color: var(--text-main); }
        .nav-menu a:hover::after, .nav-menu a.active::after { width: 100%; }
        .nav-actions { display: flex; align-items: center; gap: 12px; flex-shrink: 0; }
        .search-box {
            display: flex; align-items: center;
            background: rgba(255,255,255,0.06);
            border: 1px solid var(--border-subtle); border-radius: 50px;
            padding: 8px 16px; gap: 8px; transition: var(--transition-base);
        }
        .search-box:focus-within { border-color: var(--primary); box-shadow: 0 0 0 3px rgba(124,92,255,0.15); }
        .search-box i { color: var(--text-muted); font-size: 14px; }
        .search-box input { background: transparent; border: none; outline: none; color: var(--text-main); font-size: 14px; width: 120px; }
        .search-box input::placeholder { color: var(--text-muted); }
        .btn-login {
            background: transparent; border: 1px solid var(--border-subtle);
            color: var(--text-main); padding: 8px 20px; border-radius: 50px;
            font-size: 14px; font-weight: 500; transition: var(--transition-base);
        }
        .btn-login:hover { border-color: var(--primary); color: var(--primary-light); }
        .btn-primary-custom {
            background: var(--gradient-primary); color: #fff; border: none;
            padding: 10px 24px; border-radius: 50px; font-size: 14px; font-weight: 600;
            box-shadow: var(--shadow-glow); transition: var(--transition-base);
        }
        .btn-primary-custom:hover { transform: translateY(-2px); box-shadow: 0 6px 30px rgba(124,92,255,0.4); color: #fff; }
        .nav-toggle {
            display: none; background: transparent; border: 1px solid var(--border-subtle);
            color: var(--text-main); width: 42px; height: 42px; border-radius: 10px;
            font-size: 18px; align-items: center; justify-content: center; cursor: pointer;
        }
        .hero-section {
            position: relative; padding: 110px 0 90px;
            background-image: url('/assets/images/backpic/back-1.png');
            background-size: cover; background-position: center; overflow: hidden;
        }
        .hero-section::before {
            content: ''; position: absolute; inset: 0;
            background: linear-gradient(135deg, rgba(11,11,26,0.92) 0%, rgba(11,11,26,0.75) 50%, rgba(124,92,255,0.25) 100%);
        }
        .hero-section::after {
            content: ''; position: absolute; bottom: -60px; left: 0; right: 0; height: 120px;
            background: linear-gradient(to top, var(--dark-bg), transparent);
        }
        .hero-content { position: relative; z-index: 2; max-width: 720px; }
        .hero-badge {
            display: inline-flex; align-items: center; gap: 8px;
            background: rgba(124,92,255,0.15); border: 1px solid rgba(124,92,255,0.4);
            color: var(--primary-light); padding: 6px 16px; border-radius: 50px;
            font-size: 13px; font-weight: 600; letter-spacing: 0.5px; margin-bottom: 24px;
        }
        .hero-badge .dot { width: 8px; height: 8px; background: var(--accent); border-radius: 50%; animation: pulse 2s infinite; }
        @keyframes pulse { 0%, 100% { opacity: 1; transform: scale(1); } 50% { opacity: 0.5; transform: scale(1.3); } }
        .hero-title { font-size: 56px; font-weight: 800; line-height: 1.2; margin-bottom: 24px; letter-spacing: -0.5px; }
        .hero-title .highlight {
            background: var(--gradient-primary);
            -webkit-background-clip: text; -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .hero-desc { font-size: 18px; color: var(--text-muted); line-height: 1.8; margin-bottom: 36px; max-width: 580px; }
        .hero-buttons { display: flex; gap: 16px; flex-wrap: wrap; margin-bottom: 48px; }
        .btn-hero {
            padding: 14px 32px; border-radius: 50px; font-size: 15px; font-weight: 600;
            border: none; transition: var(--transition-base); display: inline-flex; align-items: center; gap: 8px;
        }
        .btn-hero-primary { background: var(--gradient-primary); color: #fff; box-shadow: var(--shadow-glow); }
        .btn-hero-primary:hover { transform: translateY(-3px); box-shadow: 0 10px 35px rgba(124,92,255,0.45); color: #fff; }
        .btn-hero-outline { background: transparent; border: 1px solid rgba(255,255,255,0.3); color: var(--text-main); }
        .btn-hero-outline:hover { border-color: var(--secondary); color: var(--secondary); background: rgba(0,240,255,0.08); }
        .hero-stats { display: flex; gap: 40px; flex-wrap: wrap; }
        .hero-stat { text-align: left; }
        .hero-stat .num { font-size: 32px; font-weight: 800; color: var(--text-main); line-height: 1.2; }
        .hero-stat .num span { color: var(--secondary); }
        .hero-stat .label { font-size: 14px; color: var(--text-muted); margin-top: 4px; }
        .section { padding: 90px 0; }
        .section-alt { background: rgba(255,255,255,0.02); border-top: 1px solid var(--border-subtle); border-bottom: 1px solid var(--border-subtle); }
        .section-header { text-align: center; max-width: 640px; margin: 0 auto 56px; }
        .section-tag {
            display: inline-block; font-size: 13px; font-weight: 600;
            color: var(--primary-light); background: rgba(124,92,255,0.1);
            border: 1px solid rgba(124,92,255,0.25); padding: 6px 16px;
            border-radius: 50px; margin-bottom: 16px; letter-spacing: 0.5px;
        }
        .section-title { font-size: 38px; font-weight: 800; line-height: 1.3; margin-bottom: 16px; letter-spacing: -0.3px; }
        .section-desc { font-size: 16px; color: var(--text-muted); line-height: 1.7; }
        .features-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 28px; }
        .feature-card {
            background: var(--dark-panel); border: 1px solid var(--border-subtle);
            border-radius: var(--radius-lg); padding: 36px 28px;
            transition: var(--transition-base); position: relative; overflow: hidden;
        }
        .feature-card::before {
            content: ''; position: absolute; top: 0; left: 0; right: 0; height: 3px;
            background: var(--gradient-primary); opacity: 0; transition: var(--transition-base);
        }
        .feature-card:hover { transform: translateY(-6px); border-color: var(--border-glow); box-shadow: var(--shadow-main); }
        .feature-card:hover::before { opacity: 1; }
        .feature-icon {
            width: 56px; height: 56px; border-radius: 16px;
            background: rgba(124,92,255,0.15); border: 1px solid rgba(124,92,255,0.3);
            display: flex; align-items: center; justify-content: center;
            font-size: 22px; color: var(--primary-light); margin-bottom: 20px;
        }
        .feature-card h3 { font-size: 20px; font-weight: 700; margin-bottom: 12px; color: var(--text-main); }
        .feature-card p { color: var(--text-muted); font-size: 15px; line-height: 1.7; margin: 0; }
        .category-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 28px; }
        .category-card {
            position: relative; border-radius: var(--radius-lg); overflow: hidden;
            background: var(--dark-panel); border: 1px solid var(--border-subtle);
            transition: var(--transition-base); display: block; height: 100%;
        }
        .category-card:hover { transform: translateY(-6px); border-color: var(--border-glow); box-shadow: var(--shadow-main); }
        .category-card .cover { height: 200px; background-size: cover; background-position: center; position: relative; }
        .category-card .cover::after {
            content: ''; position: absolute; inset: 0;
            background: linear-gradient(to top, var(--dark-panel) 0%, transparent 60%);
        }
        .category-card .category-body { padding: 24px; position: relative; z-index: 2; margin-top: -20px; }
        .category-card .category-tag {
            display: inline-block; font-size: 13px; font-weight: 600;
            padding: 4px 14px; border-radius: 50px;
            background: var(--gradient-primary); color: #fff; margin-bottom: 12px; box-shadow: var(--shadow-glow);
        }
        .category-card h3 { font-size: 22px; font-weight: 700; color: var(--text-main); margin-bottom: 10px; }
        .category-card p { color: var(--text-muted); font-size: 15px; line-height: 1.6; margin-bottom: 20px; }
        .category-meta { display: flex; align-items: center; justify-content: space-between; color: var(--text-muted); font-size: 14px; }
        .category-meta .link { color: var(--secondary); font-weight: 600; display: inline-flex; align-items: center; gap: 6px; }
        .news-list { display: flex; flex-direction: column; gap: 16px; }
        .news-item {
            display: flex; align-items: center; gap: 20px;
            background: var(--dark-panel); border: 1px solid var(--border-subtle);
            border-radius: var(--radius-md); padding: 20px 24px; transition: var(--transition-base);
        }
        .news-item:hover { border-color: var(--border-glow); box-shadow: var(--shadow-main); transform: translateX(4px); }
        .news-item .news-icon {
            width: 44px; height: 44px; border-radius: 12px;
            background: rgba(0,240,255,0.1); border: 1px solid rgba(0,240,255,0.2);
            display: flex; align-items: center; justify-content: center;
            color: var(--secondary); font-size: 16px; flex-shrink: 0;
        }
        .news-item .news-content { flex: 1; min-width: 0; }
        .news-item .news-title { font-size: 16px; font-weight: 600; color: var(--text-main); margin-bottom: 4px; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
        .news-item .news-title a { color: var(--text-main); }
        .news-item .news-title a:hover { color: var(--secondary); }
        .news-item .news-meta { font-size: 13px; color: var(--text-muted); display: flex; gap: 16px; flex-wrap: wrap; }
        .news-item .news-meta i { margin-right: 4px; }
        .news-item .news-badge {
            flex-shrink: 0; font-size: 12px; font-weight: 600;
            padding: 4px 12px; border-radius: 50px;
            background: rgba(124,92,255,0.15); color: var(--primary-light);
            border: 1px solid rgba(124,92,255,0.3);
        }
        .stats-section {
            background-image: url('/assets/images/backpic/back-2.png');
            background-size: cover; background-position: center;
            position: relative; padding: 80px 0;
        }
        .stats-section::before { content: ''; position: absolute; inset: 0; background: rgba(11,11,26,0.88); }
        .stats-section .container-custom { position: relative; z-index: 2; }
        .stats-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 32px; }
        .stat-card {
            text-align: center; padding: 36px 20px;
            background: rgba(255,255,255,0.04); border: 1px solid var(--border-subtle);
            border-radius: var(--radius-lg); backdrop-filter: blur(10px); transition: var(--transition-base);
        }
        .stat-card:hover { border-color: var(--border-glow); box-shadow: var(--shadow-glow); transform: translateY(-4px); }
        .stat-card .number {
            font-size: 42px; font-weight: 800;
            background: var(--gradient-primary);
            -webkit-background-clip: text; -webkit-text-fill-color: transparent;
            background-clip: text; line-height: 1.2;
        }
        .stat-card .number sup { font-size: 22px; -webkit-text-fill-color: var(--secondary); color: var(--secondary); }
        .stat-card .label { font-size: 15px; color: var(--text-muted); margin-top: 12px; }
        .content-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 28px; }
        .content-card {
            background: var(--dark-panel); border: 1px solid var(--border-subtle);
            border-radius: var(--radius-lg); overflow: hidden;
            transition: var(--transition-base); display: block; height: 100%;
        }
        .content-card:hover { transform: translateY(-6px); border-color: var(--border-glow); box-shadow: var(--shadow-main); }
        .content-card .content-cover { height: 180px; background-size: cover; background-position: center; position: relative; }
        .content-card .content-cover .tag {
            position: absolute; top: 14px; left: 14px;
            background: rgba(11,11,26,0.8); backdrop-filter: blur(10px);
            color: var(--text-main); font-size: 12px; font-weight: 600;
            padding: 4px 12px; border-radius: 50px;
        }
        .content-card .content-body { padding: 24px; }
        .content-card .content-body h3 { font-size: 18px; font-weight: 700; color: var(--text-main); margin-bottom: 10px; line-height: 1.4; }
        .content-card .content-body p { font-size: 14px; color: var(--text-muted); line-height: 1.6; margin-bottom: 16px; }
        .content-card .content-footer { display: flex; align-items: center; justify-content: space-between; font-size: 13px; color: var(--text-muted); }
        .process-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 28px; position: relative; }
        .process-step { text-align: center; position: relative; }
        .process-step::after {
            content: '→'; position: absolute; top: 45px; right: -22px;
            font-size: 22px; color: var(--primary); z-index: 2;
        }
        .process-step:last-child::after { display: none; }
        .process-step .step-num {
            width: 64px; height: 64px; border-radius: 50%;
            background: var(--dark-panel); border: 2px solid var(--primary);
            display: flex; align-items: center; justify-content: center;
            font-size: 20px; font-weight: 700; color: var(--primary-light);
            margin: 0 auto 20px; position: relative; z-index: 2; transition: var(--transition-base);
        }
        .process-step:hover .step-num { background: var(--gradient-primary); color: #fff; box-shadow: var(--shadow-glow); border-color: transparent; }
        .process-step h3 { font-size: 18px; font-weight: 700; color: var(--text-main); margin-bottom: 8px; }
        .process-step p { font-size: 14px; color: var(--text-muted); line-height: 1.6; }
        .faq-container { max-width: 860px; margin: 0 auto; }
        .faq-item {
            background: var(--dark-panel); border: 1px solid var(--border-subtle);
            border-radius: var(--radius-md); margin-bottom: 16px;
            overflow: hidden; transition: var(--transition-base);
        }
        .faq-item:hover { border-color: var(--border-glow); }
        .faq-item summary {
            padding: 24px; cursor: pointer; font-size: 16px;
            font-weight: 600; color: var(--text-main);
            display: flex; align-items: center; justify-content: space-between;
            list-style: none; transition: var(--transition-base);
        }
        .faq-item summary::-webkit-details-marker { display: none; }
        .faq-item summary::after {
            content: '+'; font-size: 24px; color: var(--primary-light);
            flex-shrink: 0; transition: transform 0.3s ease; margin-left: 16px;
        }
        .faq-item[open] summary::after { transform: rotate(45deg); }
        .faq-item[open] summary { border-bottom: 1px solid var(--border-subtle); }
        .faq-item .faq-body { padding: 20px 24px; color: var(--text-muted); font-size: 15px; line-height: 1.7; }
        .cta-section {
            background-image: url('/assets/images/backpic/back-3.png');
            background-size: cover; background-position: center;
            position: relative; padding: 90px 0; text-align: center;
        }
        .cta-section::before {
            content: ''; position: absolute; inset: 0;
            background: linear-gradient(135deg, rgba(11,11,26,0.92), rgba(124,92,255,0.55));
        }
        .cta-content { position: relative; z-index: 2; max-width: 640px; margin: 0 auto; }
        .cta-content h2 { font-size: 40px; font-weight: 800; margin-bottom: 16px; }
        .cta-content p { font-size: 17px; color: rgba(255,255,255,0.85); margin-bottom: 32px; line-height: 1.7; }
        .cta-buttons { display: flex; gap: 16px; justify-content: center; flex-wrap: wrap; }
        .btn-cta { padding: 16px 36px; border-radius: 50px; font-size: 16px; font-weight: 700; border: none; transition: var(--transition-base); display: inline-block; }
        .btn-cta-white { background: #fff; color: var(--dark-bg); }
        .btn-cta-white:hover { transform: translateY(-3px); box-shadow: 0 10px 30px rgba(255,255,255,0.3); color: var(--dark-bg); }
        .btn-cta-outline { background: transparent; border: 1px solid rgba(255,255,255,0.5); color: #fff; }
        .btn-cta-outline:hover { background: rgba(255,255,255,0.1); color: #fff; transform: translateY(-3px); }
        .site-footer { background: #08081a; border-top: 1px solid var(--border-subtle); padding: 64px 0 24px; }
        .footer-grid { display: grid; grid-template-columns: 2fr 1fr 1fr 1fr; gap: 48px; margin-bottom: 48px; }
        .footer-brand .logo-text { font-size: 24px; }
        .footer-brand p { color: var(--text-muted); font-size: 15px; line-height: 1.7; margin-top: 16px; }
        .footer-links h4 { font-size: 16px; font-weight: 700; color: var(--text-main); margin-bottom: 20px; }
        .footer-links ul { list-style: none; padding: 0; margin: 0; display: flex; flex-direction: column; gap: 12px; }
        .footer-links a { color: var(--text-muted); font-size: 14px; transition: var(--transition-base); }
        .footer-links a:hover { color: var(--secondary); padding-left: 4px; }
        .footer-bottom { border-top: 1px solid var(--border-subtle); padding-top: 24px; text-align: center; color: var(--text-muted); font-size: 14px; }
        .footer-bottom a { color: var(--text-muted); }
        .footer-bottom a:hover { color: var(--secondary); }
        @media (max-width: 1024px) {
            .features-grid { grid-template-columns: repeat(2, 1fr); }
            .category-grid { grid-template-columns: repeat(2, 1fr); }
            .content-grid { grid-template-columns: repeat(2, 1fr); }
            .stats-grid { grid-template-columns: repeat(2, 1fr); }
            .process-grid { grid-template-columns: repeat(2, 1fr); gap: 32px; }
            .process-step::after { display: none; }
            .footer-grid { grid-template-columns: repeat(2, 1fr); }
            .hero-title { font-size: 42px; }
        }
        @media (max-width: 768px) {
            .nav-toggle { display: flex; }
            .nav-menu {
                position: fixed; top: 72px; left: 16px; right: 16px;
                flex-direction: column; background: var(--dark-panel);
                border: 1px solid var(--border-subtle); border-radius: var(--radius-lg);
                padding: 20px; gap: 8px; box-shadow: var(--shadow-main);
                display: none; z-index: 1000;
            }
            .nav-menu.open { display: flex; }
            .nav-menu a { padding: 12px 16px; border-radius: var(--radius-sm); width: 100%; }
            .nav-menu a::after { display: none; }
            .nav-menu a:hover, .nav-menu a.active { background: rgba(124,92,255,0.1); color: var(--primary-light); }
            .search-box { display: none; }
            .btn-login { display: none; }
            .hero-title { font-size: 34px; }
            .hero-section { padding: 80px 0 60px; }
            .section { padding: 60px 0; }
            .section-title { font-size: 28px; }
            .features-grid, .category-grid, .content-grid { grid-template-columns: 1fr; }
            .cta-content h2 { font-size: 30px; }
        }
        @media (max-width: 520px) {
            .hero-title { font-size: 28px; }
            .hero-stats { gap: 24px; }
            .hero-stat .num { font-size: 24px; }
            .stats-grid { grid-template-columns: 1fr; }
            .process-grid { grid-template-columns: 1fr; }
            .footer-grid { grid-template-columns: 1fr; }
            .container-custom { padding: 0 16px; }
            .news-item { flex-wrap: wrap; }
            .news-item .news-badge { display: none; }
        }

/* roulang page: category1 */
:root {
            --bg-dark: #080816;
            --bg-deep: #0c0c20;
            --bg-card: #11112a;
            --bg-card-hover: #181838;
            --bg-panel: #0e0e24;
            --primary-neon: #00e5ff;
            --secondary-neon: #7b5cff;
            --accent-hot: #ff5c8a;
            --accent-gold: #ffc86b;
            --text-white: #f5f7ff;
            --text-body: #b8bfe0;
            --text-mute: #6e76a8;
            --border-line: rgba(122, 138, 255, 0.16);
            --border-glow: rgba(0, 229, 255, 0.32);
            --radius-lg: 18px;
            --radius-md: 12px;
            --radius-sm: 8px;
            --shadow-card: 0 8px 32px rgba(0, 0, 0, 0.38);
            --shadow-neon: 0 0 24px rgba(0, 229, 255, 0.14);
            --font-scale: 1rem;
            --space-section: 90px;
        }
        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            font-family: "PingFang SC", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
            font-size: var(--font-scale);
            line-height: 1.7;
            color: var(--text-body);
            background: var(--bg-dark);
            -webkit-font-smoothing: antialiased;
            overflow-x: hidden;
        }
        a {
            text-decoration: none;
            color: inherit;
            transition: color 0.25s ease;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        button,
        input {
            font-family: inherit;
            border: none;
            outline: none;
            background: transparent;
        }
        ul,
        ol {
            list-style: none;
        }
        .container-custom {
            max-width: 1280px;
            margin: 0 auto;
            padding: 0 32px;
        }
        @media (max-width: 768px) {
            .container-custom {
                padding: 0 20px;
            }
        }
        .section-block {
            padding: var(--space-section) 0;
            position: relative;
        }
        .bg-decor {
            position: relative;
            overflow: hidden;
        }
        .bg-decor::before {
            content: '';
            position: absolute;
            top: -120px;
            right: -120px;
            width: 360px;
            height: 360px;
            background: radial-gradient(circle, rgba(123, 92, 255, 0.14) 0%, transparent 70%);
            pointer-events: none;
            z-index: 0;
        }
        .section-head {
            text-align: center;
            margin-bottom: 48px;
            position: relative;
            z-index: 2;
        }
        .section-head .eyebrow {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            font-size: 0.8rem;
            font-weight: 700;
            letter-spacing: 3px;
            text-transform: uppercase;
            color: var(--primary-neon);
            background: rgba(0, 229, 255, 0.08);
            padding: 6px 16px;
            border-radius: 30px;
            border: 1px solid rgba(0, 229, 255, 0.22);
            margin-bottom: 16px;
        }
        .section-head h2 {
            font-size: clamp(1.7rem, 3vw, 2.4rem);
            font-weight: 800;
            color: var(--text-white);
            letter-spacing: -0.5px;
            margin-bottom: 12px;
            line-height: 1.3;
        }
        .section-head p {
            max-width: 620px;
            margin: 0 auto;
            font-size: 1.05rem;
            color: var(--text-mute);
        }
        @media (max-width: 768px) {
            .section-block {
                padding: 60px 0;
            }
            .section-head {
                margin-bottom: 36px;
            }
        }

        /* ---------- Header Navigation ---------- */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 1080;
            background: rgba(8, 8, 22, 0.9);
            backdrop-filter: blur(18px);
            -webkit-backdrop-filter: blur(18px);
            border-bottom: 1px solid var(--border-line);
            transition: box-shadow 0.3s ease;
        }
        .site-header.scrolled {
            box-shadow: 0 6px 30px rgba(0, 0, 0, 0.5);
        }
        .site-header .nav-container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 72px;
            gap: 20px;
        }
        .logo-area {
            display: flex;
            align-items: center;
            gap: 10px;
            flex-shrink: 0;
        }
        .logo-icon {
            width: 38px;
            height: 38px;
            display: flex;
            align-items: center;
            justify-content: center;
            border-radius: 10px;
            background: linear-gradient(135deg, var(--primary-neon), var(--secondary-neon));
            color: #fff;
            font-size: 1rem;
            box-shadow: 0 0 20px rgba(0, 229, 255, 0.3);
        }
        .logo-text {
            font-size: 1.3rem;
            font-weight: 800;
            color: var(--text-white);
            letter-spacing: -0.5px;
            white-space: nowrap;
        }
        .logo-text:hover {
            color: var(--primary-neon);
        }
        .nav-menu {
            display: flex;
            align-items: center;
            gap: 6px;
            margin: 0;
            padding: 0;
            list-style: none;
        }
        .nav-menu>li>a {
            display: inline-flex;
            align-items: center;
            padding: 8px 16px;
            font-size: 0.95rem;
            font-weight: 600;
            color: var(--text-body);
            border-radius: 30px;
            position: relative;
            transition: all 0.25s ease;
        }
        .nav-menu>li>a:hover {
            color: var(--text-white);
            background: rgba(255, 255, 255, 0.05);
        }
        .nav-menu>li>a.active {
            color: var(--primary-neon);
            background: rgba(0, 229, 255, 0.1);
            box-shadow: inset 0 0 0 1px rgba(0, 229, 255, 0.2);
        }
        .nav-actions {
            display: flex;
            align-items: center;
            gap: 12px;
            flex-shrink: 0;
        }
        .search-box {
            display: flex;
            align-items: center;
            background: rgba(255, 255, 255, 0.05);
            border: 1px solid var(--border-line);
            border-radius: 30px;
            padding: 6px 14px;
            gap: 8px;
            transition: border-color 0.25s ease, background 0.25s ease;
            width: 180px;
        }
        .search-box i {
            color: var(--text-mute);
            font-size: 0.85rem;
        }
        .search-box input {
            background: transparent;
            border: none;
            outline: none;
            color: var(--text-white);
            font-size: 0.85rem;
            width: 100%;
        }
        .search-box input::placeholder {
            color: var(--text-mute);
        }
        .search-box:focus-within {
            border-color: var(--primary-neon);
            background: rgba(0, 229, 255, 0.05);
            box-shadow: 0 0 14px rgba(0, 229, 255, 0.12);
        }
        .btn-login {
            padding: 7px 18px;
            font-size: 0.88rem;
            font-weight: 600;
            color: var(--text-body);
            border: 1px solid var(--border-line);
            border-radius: 30px;
            background: transparent;
            cursor: pointer;
            transition: all 0.25s ease;
            white-space: nowrap;
        }
        .btn-login:hover {
            color: var(--text-white);
            border-color: var(--primary-neon);
            background: rgba(0, 229, 255, 0.08);
        }
        .btn-primary-custom {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 9px 22px;
            font-size: 0.88rem;
            font-weight: 700;
            color: #06121a;
            background: linear-gradient(135deg, var(--primary-neon), #4dd8ff);
            border-radius: 30px;
            transition: all 0.25s ease;
            white-space: nowrap;
            box-shadow: 0 0 18px rgba(0, 229, 255, 0.22);
        }
        .btn-primary-custom:hover {
            transform: translateY(-2px);
            box-shadow: 0 6px 24px rgba(0, 229, 255, 0.32);
            color: #06121a;
        }
        .nav-toggle {
            display: none;
            width: 38px;
            height: 38px;
            align-items: center;
            justify-content: center;
            font-size: 1.1rem;
            color: var(--text-white);
            border-radius: 10px;
            border: 1px solid var(--border-line);
            cursor: pointer;
            background: transparent;
            transition: all 0.25s ease;
        }
        .nav-toggle:hover {
            border-color: var(--primary-neon);
            color: var(--primary-neon);
        }
        @media (max-width: 1024px) {
            .nav-menu {
                position: fixed;
                top: 72px;
                left: 0;
                right: 0;
                background: rgba(10, 10, 26, 0.98);
                backdrop-filter: blur(16px);
                flex-direction: column;
                align-items: stretch;
                padding: 16px 24px 24px;
                gap: 4px;
                border-bottom: 1px solid var(--border-line);
                transform: translateY(-120%);
                transition: transform 0.32s ease;
                box-shadow: 0 20px 40px rgba(0, 0, 0, 0.4);
                max-height: calc(100vh - 72px);
                overflow-y: auto;
            }
            .nav-menu.open {
                transform: translateY(0);
            }
            .nav-menu>li>a {
                padding: 13px 18px;
                border-radius: 12px;
                font-size: 1rem;
                border: 1px solid transparent;
            }
            .nav-menu>li>a.active {
                border-color: rgba(0, 229, 255, 0.2);
            }
            .nav-toggle {
                display: flex;
            }
            .search-box {
                width: 140px;
            }
        }
        @media (max-width: 640px) {
            .site-header .nav-container {
                height: 64px;
            }
            .logo-text {
                font-size: 1.1rem;
            }
            .logo-icon {
                width: 32px;
                height: 32px;
                font-size: 0.85rem;
                border-radius: 8px;
            }
            .btn-login {
                display: none;
            }
            .search-box {
                display: none;
            }
            .btn-primary-custom {
                padding: 8px 14px;
                font-size: 0.82rem;
            }
            .nav-menu {
                top: 64px;
            }
        }

        /* ---------- Category Banner ---------- */
        .category-banner {
            position: relative;
            min-height: 300px;
            display: flex;
            align-items: center;
            background: linear-gradient(rgba(8, 8, 22, 0.82), rgba(8, 8, 22, 0.92)), url('/assets/images/backpic/back-1.png') center / cover no-repeat;
            border-bottom: 1px solid var(--border-line);
            padding: 60px 0;
        }
        .category-banner .banner-content {
            position: relative;
            z-index: 2;
            max-width: 720px;
        }
        .category-banner .breadcrumb-nav {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 0.85rem;
            color: var(--text-mute);
            margin-bottom: 18px;
            flex-wrap: wrap;
        }
        .category-banner .breadcrumb-nav a {
            color: var(--text-mute);
            transition: color 0.25s ease;
        }
        .category-banner .breadcrumb-nav a:hover {
            color: var(--primary-neon);
        }
        .category-banner .breadcrumb-nav i {
            font-size: 0.65rem;
            color: var(--text-mute);
            opacity: 0.7;
        }
        .category-banner .breadcrumb-nav .current {
            color: var(--text-body);
            font-weight: 600;
        }
        .category-banner .banner-badge {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-size: 0.78rem;
            font-weight: 700;
            letter-spacing: 2px;
            text-transform: uppercase;
            color: var(--primary-neon);
            background: rgba(0, 229, 255, 0.12);
            border: 1px solid rgba(0, 229, 255, 0.28);
            padding: 6px 16px;
            border-radius: 30px;
            margin-bottom: 18px;
        }
        .category-banner h1 {
            font-size: clamp(2rem, 4vw, 3rem);
            font-weight: 800;
            color: var(--text-white);
            line-height: 1.25;
            letter-spacing: -0.5px;
            margin-bottom: 14px;
        }
        .category-banner h1 .text-glow {
            color: var(--primary-neon);
        }
        .category-banner p {
            font-size: 1.05rem;
            color: var(--text-body);
            margin-bottom: 28px;
            line-height: 1.8;
        }
        .banner-meta {
            display: flex;
            gap: 24px;
            flex-wrap: wrap;
            font-size: 0.85rem;
            color: var(--text-mute);
        }
        .banner-meta span {
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }
        .banner-meta i {
            color: var(--primary-neon);
            font-size: 0.8rem;
        }
        @media (max-width: 768px) {
            .category-banner {
                padding: 44px 0;
                min-height: auto;
            }
        }

        /* ---------- Filter Tabs ---------- */
        .filter-section {
            padding: 40px 0 0;
            position: relative;
            z-index: 3;
        }
        .filter-bar {
            display: flex;
            align-items: center;
            gap: 8px;
            flex-wrap: wrap;
            justify-content: center;
        }
        .filter-bar .filter-btn {
            padding: 8px 20px;
            font-size: 0.88rem;
            font-weight: 600;
            color: var(--text-body);
            border: 1px solid var(--border-line);
            border-radius: 30px;
            background: rgba(255, 255, 255, 0.03);
            cursor: pointer;
            transition: all 0.25s ease;
        }
        .filter-bar .filter-btn:hover {
            color: var(--text-white);
            border-color: var(--primary-neon);
            background: rgba(0, 229, 255, 0.06);
        }
        .filter-bar .filter-btn.active {
            color: #06121a;
            background: var(--primary-neon);
            border-color: var(--primary-neon);
            font-weight: 700;
            box-shadow: 0 0 18px rgba(0, 229, 255, 0.25);
        }
        @media (max-width: 520px) {
            .filter-bar .filter-btn {
                padding: 7px 14px;
                font-size: 0.82rem;
            }
        }

        /* ---------- Match Cards ---------- */
        .match-cards {
            padding: 50px 0 var(--space-section);
        }
        .match-card {
            background: var(--bg-card);
            border: 1px solid var(--border-line);
            border-radius: var(--radius-lg);
            overflow: hidden;
            transition: all 0.3s ease;
            height: 100%;
            position: relative;
        }
        .match-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-card);
            border-color: var(--border-glow);
        }
        .match-card .card-cover {
            position: relative;
            height: 170px;
            overflow: hidden;
        }
        .match-card .card-cover img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.4s ease;
        }
        .match-card:hover .card-cover img {
            transform: scale(1.06);
        }
        .match-card .card-cover .match-status {
            position: absolute;
            top: 14px;
            left: 14px;
            padding: 4px 14px;
            font-size: 0.75rem;
            font-weight: 700;
            border-radius: 30px;
            backdrop-filter: blur(6px);
        }
        .match-status.live {
            background: rgba(255, 92, 138, 0.9);
            color: #fff;
            box-shadow: 0 0 12px rgba(255, 92, 138, 0.5);
        }
        .match-status.upcoming {
            background: rgba(0, 229, 255, 0.82);
            color: #06121a;
        }
        .match-status.finished {
            background: rgba(110, 118, 168, 0.82);
            color: #fff;
        }
        .match-card .card-body {
            padding: 20px;
        }
        .match-card .match-tag {
            display: inline-flex;
            align-items: center;
            font-size: 0.75rem;
            font-weight: 700;
            color: var(--secondary-neon);
            letter-spacing: 1px;
            margin-bottom: 8px;
        }
        .match-card .match-title {
            font-size: 1.15rem;
            font-weight: 700;
            color: var(--text-white);
            margin-bottom: 8px;
            line-height: 1.4;
        }
        .match-card .match-subtitle {
            font-size: 0.85rem;
            color: var(--text-mute);
            margin-bottom: 14px;
        }
        .match-card .team-row {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 10px 0;
            border-top: 1px solid rgba(122, 138, 255, 0.1);
        }
        .match-card .team-row .team {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 0.9rem;
            font-weight: 600;
            color: var(--text-body);
        }
        .match-card .team-row .team .avatar {
            width: 28px;
            height: 28px;
            border-radius: 50%;
            background: linear-gradient(135deg, var(--primary-neon), var(--secondary-neon));
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 0.65rem;
            font-weight: 800;
            color: #fff;
        }
        .match-card .score-label {
            font-size: 1.15rem;
            font-weight: 800;
            color: var(--text-white);
            letter-spacing: 1px;
        }
        .match-card .card-footer-meta {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding-top: 12px;
            border-top: 1px solid rgba(122, 138, 255, 0.1);
            font-size: 0.8rem;
            color: var(--text-mute);
        }
        .match-card .card-footer-meta i {
            margin-right: 4px;
            font-size: 0.75rem;
        }
        .match-card .card-footer-meta .viewers {
            color: var(--primary-neon);
        }
        .match-card.middle-card {
            background: linear-gradient(160deg, rgba(0, 229, 255, 0.08), rgba(123, 92, 255, 0.1)), var(--bg-card);
            border-color: rgba(0, 229, 255, 0.3);
        }
        .match-card.middle-card:hover {
            box-shadow: 0 10px 36px rgba(0, 229, 255, 0.18);
        }

        /* ---------- Stats Panel ---------- */
        .stats-section {
            background: linear-gradient(135deg, rgba(123, 92, 255, 0.1), rgba(0, 229, 255, 0.06)), var(--bg-panel);
            border-top: 1px solid var(--border-line);
            border-bottom: 1px solid var(--border-line);
            padding: 60px 0;
        }
        .stats-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 30px;
        }
        .stat-block {
            text-align: center;
            padding: 24px 12px;
            border-radius: var(--radius-lg);
            background: rgba(255, 255, 255, 0.025);
            border: 1px solid rgba(122, 138, 255, 0.1);
            transition: all 0.3s ease;
            position: relative;
        }
        .stat-block:hover {
            border-color: rgba(0, 229, 255, 0.3);
            background: rgba(0, 229, 255, 0.03);
        }
        .stat-block .stat-icon {
            font-size: 1.4rem;
            color: var(--primary-neon);
            margin-bottom: 10px;
        }
        .stat-block .stat-num {
            font-size: clamp(1.6rem, 3vw, 2.4rem);
            font-weight: 800;
            color: var(--text-white);
            line-height: 1.2;
            margin-bottom: 4px;
        }
        .stat-block .stat-label {
            font-size: 0.85rem;
            color: var(--text-mute);
            letter-spacing: 1px;
        }
        .stat-block .stat-num .unit {
            font-size: 0.9rem;
            font-weight: 600;
            color: var(--text-mute);
            margin-left: 2px;
        }
        @media (max-width: 992px) {
            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 16px;
            }
        }
        @media (max-width: 480px) {
            .stats-grid {
                grid-template-columns: 1fr 1fr;
            }
            .stat-block {
                padding: 16px 8px;
            }
        }

        /* ---------- Feature Timeline ---------- */
        .schedule-section {
            background: var(--bg-dark);
        }
        .timeline-wrap {
            position: relative;
            max-width: 780px;
            margin: 0 auto;
            padding-left: 40px;
        }
        .timeline-wrap::before {
            content: '';
            position: absolute;
            left: 14px;
            top: 0;
            bottom: 0;
            width: 2px;
            background: linear-gradient(to bottom, var(--primary-neon), var(--secondary-neon), transparent);
            opacity: 0.45;
        }
        .timeline-item {
            position: relative;
            padding: 22px 24px;
            margin-bottom: 18px;
            background: var(--bg-card);
            border: 1px solid var(--border-line);
            border-radius: var(--radius-md);
            transition: all 0.3s ease;
        }
        .timeline-item:hover {
            border-color: var(--border-glow);
            box-shadow: var(--shadow-neon);
            transform: translateX(4px);
        }
        .timeline-item::before {
            content: '';
            position: absolute;
            left: -34px;
            top: 32px;
            width: 10px;
            height: 10px;
            border-radius: 50%;
            background: var(--primary-neon);
            box-shadow: 0 0 12px rgba(0, 229, 255, 0.6);
        }
        .timeline-item .time-tag {
            font-size: 0.75rem;
            font-weight: 700;
            color: var(--primary-neon);
            letter-spacing: 1px;
            margin-bottom: 6px;
        }
        .timeline-item h4 {
            font-size: 1rem;
            font-weight: 700;
            color: var(--text-white);
            margin-bottom: 4px;
        }
        .timeline-item p {
            font-size: 0.85rem;
            color: var(--text-mute);
            margin-bottom: 0;
        }
        @media (max-width: 640px) {
            .timeline-wrap {
                padding-left: 34px;
            }
            .timeline-item {
                padding: 16px 16px;
            }
            .timeline-item::before {
                left: -30px;
                width: 8px;
                height: 8px;
            }
        }

        /* ---------- Featured Articles ---------- */
        .featured-section {
            background: var(--bg-deep);
        }
        .featured-card {
            display: flex;
            background: var(--bg-card);
            border: 1px solid var(--border-line);
            border-radius: var(--radius-lg);
            overflow: hidden;
            transition: all 0.3s ease;
            height: 100%;
            margin-bottom: 24px;
        }
        .featured-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-card);
            border-color: var(--border-glow);
        }
        .featured-card .featured-cover {
            flex: 0 0 180px;
            position: relative;
            overflow: hidden;
        }
        .featured-card .featured-cover img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.4s ease;
        }
        .featured-card:hover .featured-cover img {
            transform: scale(1.05);
        }
        .featured-card .featured-body {
            padding: 22px;
            flex: 1;
        }
        .featured-card .featured-body .featured-tag {
            font-size: 0.72rem;
            font-weight: 700;
            color: var(--primary-neon);
            letter-spacing: 1px;
            margin-bottom: 6px;
            display: block;
        }
        .featured-card .featured-body h3 {
            font-size: 1.1rem;
            font-weight: 700;
            color: var(--text-white);
            margin-bottom: 8px;
            line-height: 1.4;
            transition: color 0.25s ease;
        }
        .featured-card:hover .featured-body h3 {
            color: var(--primary-neon);
        }
        .featured-card .featured-body .desc {
            font-size: 0.86rem;
            color: var(--text-mute);
            line-height: 1.7;
            margin-bottom: 12px;
        }
        .featured-card .featured-body .featured-meta {
            display: flex;
            gap: 14px;
            font-size: 0.78rem;
            color: var(--text-mute);
            flex-wrap: wrap;
        }
        .featured-card .featured-body .featured-meta i {
            margin-right: 4px;
            font-size: 0.7rem;
        }
        @media (max-width: 768px) {
            .featured-card {
                flex-direction: column;
            }
            .featured-card .featured-cover {
                flex: none;
                height: 160px;
            }
        }

        /* ---------- FAQ ---------- */
        .faq-section {
            background: var(--bg-dark);
        }
        .faq-wrap {
            max-width: 780px;
            margin: 0 auto;
        }
        .faq-item {
            margin-bottom: 14px;
            background: var(--bg-card);
            border: 1px solid var(--border-line);
            border-radius: var(--radius-md);
            overflow: hidden;
            transition: border-color 0.3s ease;
        }
        .faq-item:hover {
            border-color: rgba(0, 229, 255, 0.24);
        }
        .faq-question {
            padding: 18px 24px;
            display: flex;
            justify-content: space-between;
            align-items: center;
            gap: 16px;
            cursor: pointer;
            font-size: 1rem;
            font-weight: 600;
            color: var(--text-white);
            user-select: none;
        }
        .faq-question i {
            color: var(--primary-neon);
            font-size: 0.9rem;
            transition: transform 0.3s ease;
            flex-shrink: 0;
        }
        .faq-item.open .faq-question i {
            transform: rotate(180deg);
        }
        .faq-answer {
            padding: 0 24px;
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.35s ease, padding 0.3s ease;
            font-size: 0.9rem;
            color: var(--text-body);
            line-height: 1.8;
        }
        .faq-item.open .faq-answer {
            padding: 0 24px 20px;
            max-height: 400px;
        }

        /* ---------- CTA ---------- */
        .cta-section {
            padding: 70px 0;
            position: relative;
            background: linear-gradient(rgba(8, 8, 22, 0.7), rgba(8, 8, 22, 0.85)), url('/assets/images/backpic/back-2.png') center / cover no-repeat;
            border-top: 1px solid var(--border-line);
            border-bottom: 1px solid var(--border-line);
            text-align: center;
        }
        .cta-section h2 {
            font-size: clamp(1.6rem, 3vw, 2.2rem);
            font-weight: 800;
            color: var(--text-white);
            margin-bottom: 14px;
        }
        .cta-section p {
            max-width: 520px;
            margin: 0 auto 26px;
            font-size: 1rem;
            color: var(--text-body);
        }
        .cta-section .cta-btns {
            display: flex;
            gap: 14px;
            justify-content: center;
            flex-wrap: wrap;
        }
        .btn-cta-main {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 12px 30px;
            font-size: 0.95rem;
            font-weight: 700;
            color: #06121a;
            background: linear-gradient(135deg, var(--primary-neon), #4dd8ff);
            border-radius: 30px;
            box-shadow: 0 0 22px rgba(0, 229, 255, 0.25);
            transition: all 0.3s ease;
        }
        .btn-cta-main:hover {
            transform: translateY(-2px);
            box-shadow: 0 8px 30px rgba(0, 229, 255, 0.35);
            color: #06121a;
        }
        .btn-cta-ghost {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 11px 28px;
            font-size: 0.95rem;
            font-weight: 600;
            color: var(--text-white);
            border: 1px solid var(--border-line);
            border-radius: 30px;
            background: rgba(255, 255, 255, 0.03);
            transition: all 0.3s ease;
        }
        .btn-cta-ghost:hover {
            border-color: var(--primary-neon);
            background: rgba(0, 229, 255, 0.08);
            color: var(--primary-neon);
        }

        /* ---------- Footer ---------- */
        .site-footer {
            background: #05050f;
            border-top: 1px solid var(--border-line);
            padding-top: 60px;
            font-size: 0.88rem;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 40px;
            padding-bottom: 40px;
        }
        .footer-brand .logo-text {
            font-size: 1.2rem;
            display: inline-block;
            margin-bottom: 12px;
        }
        .footer-brand p {
            color: var(--text-mute);
            line-height: 1.7;
            max-width: 320px;
        }
        .footer-links h4 {
            font-size: 0.9rem;
            font-weight: 700;
            color: var(--text-white);
            margin-bottom: 16px;
            letter-spacing: 1px;
        }
        .footer-links ul li {
            margin-bottom: 10px;
        }
        .footer-links ul li a {
            color: var(--text-mute);
            transition: all 0.25s ease;
        }
        .footer-links ul li a:hover {
            color: var(--primary-neon);
            padding-left: 4px;
        }
        .footer-bottom {
            padding: 22px 0;
            border-top: 1px solid rgba(122, 138, 255, 0.1);
            text-align: center;
            font-size: 0.8rem;
            color: var(--text-mute);
        }
        .footer-bottom a {
            color: var(--text-mute);
            transition: color 0.25s ease;
        }
        .footer-bottom a:hover {
            color: var(--primary-neon);
        }
        @media (max-width: 992px) {
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 32px;
            }
        }
        @media (max-width: 640px) {
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 28px;
            }
            .footer-brand p {
                max-width: 100%;
            }
        }

        /* ---------- Responsive ---------- */
        @media (max-width: 1024px) {
            .match-card .card-cover {
                height: 140px;
            }
        }
        @media (max-width: 768px) {
            :root {
                --space-section: 60px;
            }
            .nav-actions .btn-login {
                display: none;
            }
            .search-box {
                display: none;
            }
        }
        @media (max-width: 520px) {
            .nav-actions .btn-primary-custom span {
                display: none;
            }
            .nav-actions .btn-primary-custom {
                padding: 8px 14px;
            }
            .match-cards .col-sm-6 {
                flex: 0 0 100%;
                max-width: 100%;
            }
            .featured-card .featured-body {
                padding: 16px;
            }
            .section-head p {
                font-size: 0.92rem;
            }
        }

/* roulang page: article */
:root {
        --primary: #00e5ff;
        --primary-dark: #0a9fc7;
        --primary-glow: rgba(0, 229, 255, 0.35);
        --accent: #fbbf24;
        --accent-glow: rgba(251, 191, 36, 0.25);
        --bg-dark: #0b1120;
        --bg-panel: #101a30;
        --bg-card: #131f38;
        --bg-card-hover: #182746;
        --bg-input: #0d1730;
        --text-main: #e2e8f0;
        --text-muted: #8ea1bd;
        --text-faint: #5b6c8a;
        --border: rgba(148, 163, 184, 0.15);
        --border-light: rgba(148, 163, 184, 0.3);
        --radius: 18px;
        --radius-sm: 12px;
        --shadow: 0 8px 32px rgba(0, 0, 0, 0.32);
        --shadow-lg: 0 20px 60px rgba(0, 0, 0, 0.45);
        --shadow-primary: 0 0 32px rgba(0, 229, 255, 0.15);
        --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
        --spacing-section: 96px;
        --font-body: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans SC", sans-serif;
    }
    *,
    *::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);
        background-color: var(--bg-dark);
        color: var(--text-main);
        line-height: 1.7;
        font-size: 16px;
        overflow-x: hidden;
    }
    a {
        color: var(--primary);
        text-decoration: none;
        transition: var(--transition);
    }
    a:hover {
        color: var(--primary-dark);
        text-decoration: none;
    }
    img {
        max-width: 100%;
        height: auto;
        display: block;
    }
    button,
    input,
    select,
    textarea {
        font-family: inherit;
        font-size: inherit;
        line-height: inherit;
        border: none;
        outline: none;
        background: none;
    }
    .container-custom {
        width: 100%;
        max-width: 1240px;
        margin: 0 auto;
        padding: 0 32px;
    }
    .site-header {
        position: sticky;
        top: 0;
        z-index: 1000;
        background: rgba(11, 17, 32, 0.86);
        backdrop-filter: blur(16px);
        -webkit-backdrop-filter: blur(16px);
        border-bottom: 1px solid var(--border);
        transition: var(--transition);
    }
    .site-header.scrolled {
        box-shadow: var(--shadow);
        background: rgba(11, 17, 32, 0.96);
    }
    .nav-container {
        display: flex;
        align-items: center;
        justify-content: space-between;
        height: 72px;
        gap: 24px;
    }
    .logo-area {
        display: flex;
        align-items: center;
        gap: 12px;
        flex-shrink: 0;
    }
    .logo-icon {
        width: 40px;
        height: 40px;
        border-radius: 12px;
        background: linear-gradient(135deg, var(--primary), #6366f1);
        display: flex;
        align-items: center;
        justify-content: center;
        color: #fff;
        font-size: 18px;
        box-shadow: 0 0 20px var(--primary-glow);
        animation: pulseGlow 3s ease-in-out infinite;
    }
    @keyframes pulseGlow {
        0%,
        100% {
            box-shadow: 0 0 16px rgba(0, 229, 255, 0.2);
        }
        50% {
            box-shadow: 0 0 28px rgba(0, 229, 255, 0.45);
        }
    }
    .logo-text {
        font-size: 24px;
        font-weight: 800;
        color: var(--text-main);
        letter-spacing: -0.5px;
        line-height: 1.2;
    }
    .logo-text:hover {
        color: var(--primary);
    }
    .nav-menu {
        display: flex;
        align-items: center;
        gap: 6px;
        list-style: none;
        margin: 0;
        padding: 0;
    }
    .nav-menu li a {
        padding: 10px 20px;
        color: var(--text-muted);
        font-weight: 500;
        font-size: 15px;
        border-radius: 999px;
        transition: var(--transition);
        position: relative;
    }
    .nav-menu li a:hover {
        color: var(--primary);
        background: rgba(0, 229, 255, 0.08);
    }
    .nav-menu li a.active {
        color: var(--primary);
        background: rgba(0, 229, 255, 0.12);
        font-weight: 600;
    }
    .nav-menu li a.active::after {
        content: '';
        position: absolute;
        bottom: 2px;
        left: 50%;
        transform: translateX(-50%);
        width: 18px;
        height: 3px;
        border-radius: 99px;
        background: var(--primary);
        box-shadow: 0 0 10px var(--primary-glow);
    }
    .nav-actions {
        display: flex;
        align-items: center;
        gap: 12px;
        flex-shrink: 0;
    }
    .search-box {
        display: flex;
        align-items: center;
        gap: 8px;
        background: var(--bg-input);
        border: 1px solid var(--border);
        border-radius: 999px;
        padding: 8px 16px;
        transition: var(--transition);
        color: var(--text-muted);
    }
    .search-box:focus-within {
        border-color: var(--primary);
        box-shadow: 0 0 16px rgba(0, 229, 255, 0.15);
    }
    .search-box i {
        font-size: 14px;
        color: var(--text-faint);
    }
    .search-box input {
        width: 130px;
        background: transparent;
        color: var(--text-main);
        font-size: 14px;
    }
    .search-box input::placeholder {
        color: var(--text-faint);
    }
    .btn-login {
        padding: 8px 20px;
        border-radius: 999px;
        border: 1px solid var(--border-light);
        color: var(--text-main);
        font-size: 14px;
        font-weight: 500;
        background: transparent;
        cursor: pointer;
        transition: var(--transition);
    }
    .btn-login:hover {
        border-color: var(--primary);
        color: var(--primary);
        box-shadow: 0 0 14px rgba(0, 229, 255, 0.12);
    }
    .btn-primary-custom {
        display: inline-flex;
        align-items: center;
        gap: 8px;
        padding: 10px 24px;
        background: linear-gradient(135deg, var(--primary), #6366f1);
        color: #fff;
        font-size: 14px;
        font-weight: 700;
        border-radius: 999px;
        border: none;
        cursor: pointer;
        box-shadow: 0 4px 18px var(--primary-glow);
        transition: var(--transition);
    }
    .btn-primary-custom:hover {
        transform: translateY(-2px);
        box-shadow: 0 8px 30px rgba(0, 229, 255, 0.35);
        color: #fff;
    }
    .btn-primary-custom:active {
        transform: translateY(0) scale(0.98);
    }
    .btn-outline-custom {
        display: inline-flex;
        align-items: center;
        gap: 8px;
        padding: 10px 24px;
        border: 1.5px solid var(--primary);
        color: var(--primary);
        font-size: 14px;
        font-weight: 600;
        border-radius: 999px;
        cursor: pointer;
        background: transparent;
        transition: var(--transition);
    }
    .btn-outline-custom:hover {
        background: rgba(0, 229, 255, 0.1);
        color: var(--primary);
        box-shadow: 0 0 20px rgba(0, 229, 255, 0.15);
    }
    .nav-toggle {
        display: none;
        width: 42px;
        height: 42px;
        align-items: center;
        justify-content: center;
        border-radius: 12px;
        border: 1px solid var(--border);
        color: var(--text-main);
        font-size: 18px;
        cursor: pointer;
        background: var(--bg-panel);
        transition: var(--transition);
    }
    .nav-toggle:hover {
        color: var(--primary);
        border-color: var(--primary);
    }
    .article-hero {
        position: relative;
        padding: 90px 0 80px;
        background-image: url('/assets/images/backpic/back-2.png');
        background-size: cover;
        background-position: center;
        background-repeat: no-repeat;
        overflow: hidden;
    }
    .article-hero::before {
        content: '';
        position: absolute;
        inset: 0;
        background: linear-gradient(180deg, rgba(11, 17, 32, 0.7), rgba(11, 17, 32, 0.94));
    }
    .article-hero::after {
        content: '';
        position: absolute;
        bottom: 0;
        left: 0;
        width: 100%;
        height: 1px;
        background: linear-gradient(90deg, transparent, rgba(0, 229, 255, 0.4), transparent);
    }
    .article-hero-inner {
        position: relative;
        z-index: 2;
        max-width: 860px;
        margin: 0 auto;
        text-align: center;
    }
    .breadcrumb-bar {
        display: inline-flex;
        align-items: center;
        gap: 10px;
        padding: 8px 18px;
        background: rgba(11, 17, 32, 0.7);
        backdrop-filter: blur(8px);
        border: 1px solid var(--border);
        border-radius: 999px;
        font-size: 13px;
        color: var(--text-muted);
        margin-bottom: 28px;
    }
    .breadcrumb-bar a {
        color: var(--text-muted);
    }
    .breadcrumb-bar a:hover {
        color: var(--primary);
    }
    .breadcrumb-bar i {
        font-size: 10px;
        color: var(--text-faint);
    }
    .article-hero h1 {
        font-size: 40px;
        font-weight: 800;
        line-height: 1.3;
        letter-spacing: -0.5px;
        color: var(--text-main);
        margin-bottom: 20px;
        text-shadow: 0 4px 30px rgba(0, 0, 0, 0.4);
    }
    .article-meta {
        display: flex;
        align-items: center;
        justify-content: center;
        flex-wrap: wrap;
        gap: 12px 24px;
        color: var(--text-muted);
        font-size: 14px;
    }
    .meta-item {
        display: inline-flex;
        align-items: center;
        gap: 6px;
    }
    .meta-item i {
        color: var(--primary);
        font-size: 13px;
    }
    .article-main {
        padding: 0;
        position: relative;
        z-index: 2;
        margin-top: -40px;
    }
    .article-card {
        background: var(--bg-card);
        border: 1px solid var(--border);
        border-radius: var(--radius);
        box-shadow: var(--shadow);
        overflow: hidden;
        max-width: 860px;
        margin: 0 auto;
    }
    .article-feature-img {
        width: 100%;
        height: 320px;
        overflow: hidden;
        position: relative;
    }
    .article-feature-img img {
        width: 100%;
        height: 100%;
        object-fit: cover;
        transition: transform 0.6s ease;
    }
    .article-card:hover .article-feature-img img {
        transform: scale(1.03);
    }
    .article-feature-img::after {
        content: '';
        position: absolute;
        bottom: 0;
        left: 0;
        width: 100%;
        height: 120px;
        background: linear-gradient(transparent, var(--bg-card));
    }
    .article-content-body {
        padding: 48px 56px 40px;
        font-size: 16.5px;
        line-height: 2;
        color: var(--text-main);
    }
    .article-content-body h2 {
        font-size: 28px;
        font-weight: 700;
        margin: 32px 0 16px;
        color: var(--text-main);
        line-height: 1.4;
        position: relative;
        padding-bottom: 12px;
    }
    .article-content-body h2::after {
        content: '';
        position: absolute;
        bottom: 0;
        left: 0;
        width: 48px;
        height: 3px;
        border-radius: 99px;
        background: linear-gradient(90deg, var(--primary), transparent);
    }
    .article-content-body h3 {
        font-size: 22px;
        font-weight: 700;
        margin: 28px 0 14px;
        color: var(--text-main);
    }
    .article-content-body p {
        margin-bottom: 20px;
        color: rgba(226, 232, 240, 0.9);
    }
    .article-content-body ul,
    .article-content-body ol {
        margin: 0 0 24px 0;
        padding-left: 24px;
    }
    .article-content-body li {
        margin-bottom: 10px;
        color: rgba(226, 232, 240, 0.9);
    }
    .article-content-body blockquote {
        border-left: 4px solid var(--primary);
        background: var(--bg-panel);
        padding: 16px 24px;
        border-radius: 0 12px 12px 0;
        margin: 24px 0;
        font-style: italic;
        color: var(--text-muted);
    }
    .article-content-body a {
        color: var(--primary);
        text-decoration: underline;
        text-underline-offset: 3px;
    }
    .article-content-body img {
        border-radius: var(--radius-sm);
        margin: 24px 0;
        width: 100%;
    }
    .not-found {
        text-align: center;
        padding: 80px 40px;
    }
    .not-found i {
        font-size: 64px;
        color: var(--text-faint);
        margin-bottom: 24px;
    }
    .not-found h2 {
        font-size: 28px;
        font-weight: 700;
        margin-bottom: 12px;
        color: var(--text-main);
    }
    .not-found p {
        color: var(--text-muted);
        margin-bottom: 32px;
    }
    .article-tags-section {
        padding: 32px 56px 16px;
        border-top: 1px solid var(--border);
        max-width: 860px;
        margin: 0 auto;
        display: flex;
        align-items: center;
        justify-content: space-between;
        flex-wrap: wrap;
        gap: 16px;
        background: var(--bg-card);
        border-radius: 0 0 var(--radius) var(--radius);
        box-shadow: var(--shadow);
    }
    .article-tags {
        display: flex;
        align-items: center;
        flex-wrap: wrap;
        gap: 8px;
    }
    .tag-item {
        display: inline-flex;
        align-items: center;
        gap: 6px;
        padding: 6px 14px;
        background: var(--bg-panel);
        border: 1px solid var(--border);
        border-radius: 999px;
        font-size: 13px;
        color: var(--text-muted);
        transition: var(--transition);
    }
    .tag-item:hover {
        border-color: var(--primary);
        color: var(--primary);
    }
    .tag-item i {
        font-size: 11px;
        color: var(--primary);
    }
    .share-links {
        display: flex;
        align-items: center;
        gap: 10px;
    }
    .share-links span {
        font-size: 13px;
        color: var(--text-faint);
    }
    .share-btn {
        width: 36px;
        height: 36px;
        display: flex;
        align-items: center;
        justify-content: center;
        border-radius: 50%;
        border: 1px solid var(--border);
        color: var(--text-muted);
        font-size: 14px;
        transition: var(--transition);
        background: transparent;
    }
    .share-btn:hover {
        border-color: var(--primary);
        color: var(--primary);
        background: rgba(0, 229, 255, 0.1);
    }
    .related-section {
        padding: var(--spacing-section) 0 60px;
    }
    .section-heading {
        text-align: center;
        margin-bottom: 48px;
    }
    .section-eyebrow {
        display: inline-flex;
        align-items: center;
        gap: 8px;
        font-size: 13px;
        font-weight: 600;
        letter-spacing: 0.08em;
        color: var(--primary);
        text-transform: uppercase;
        margin-bottom: 12px;
    }
    .section-eyebrow::before,
    .section-eyebrow::after {
        content: '';
        width: 28px;
        height: 1px;
        background: linear-gradient(90deg, transparent, var(--primary));
    }
    .section-eyebrow::after {
        background: linear-gradient(90deg, var(--primary), transparent);
    }
    .section-heading h2 {
        font-size: 36px;
        font-weight: 800;
        color: var(--text-main);
        letter-spacing: -0.5px;
        margin-bottom: 12px;
    }
    .section-heading p {
        color: var(--text-muted);
        font-size: 16px;
        max-width: 600px;
        margin: 0 auto;
    }
    .related-grid {
        display: grid;
        grid-template-columns: repeat(4, 1fr);
        gap: 24px;
        margin-top: 40px;
    }
    .related-card {
        background: var(--bg-card);
        border: 1px solid var(--border);
        border-radius: var(--radius);
        overflow: hidden;
        transition: var(--transition);
        position: relative;
    }
    .related-card:hover {
        transform: translateY(-6px);
        border-color: rgba(0, 229, 255, 0.4);
        box-shadow: var(--shadow-lg);
    }
    .related-card-img {
        position: relative;
        height: 180px;
        overflow: hidden;
    }
    .related-card-img img {
        width: 100%;
        height: 100%;
        object-fit: cover;
        transition: transform 0.5s ease;
    }
    .related-card:hover .related-card-img img {
        transform: scale(1.06);
    }
    .related-card-tag {
        position: absolute;
        top: 14px;
        left: 14px;
        padding: 4px 14px;
        background: rgba(0, 229, 255, 0.9);
        color: #fff;
        font-size: 12px;
        font-weight: 600;
        border-radius: 999px;
        backdrop-filter: blur(4px);
    }
    .related-card-body {
        padding: 20px;
    }
    .related-card-body h3 {
        font-size: 16px;
        font-weight: 600;
        line-height: 1.5;
        margin-bottom: 10px;
        color: var(--text-main);
        transition: var(--transition);
    }
    .related-card:hover .related-card-body h3 {
        color: var(--primary);
    }
    .related-card-body p {
        font-size: 13px;
        color: var(--text-faint);
        margin: 0;
    }
    .stats-section {
        padding: 80px 0;
        background: linear-gradient(180deg, transparent 0%, rgba(0, 229, 255, 0.03) 50%, transparent 100%);
        border-top: 1px solid var(--border);
        border-bottom: 1px solid var(--border);
        margin: 40px 0;
    }
    .stats-grid {
        display: grid;
        grid-template-columns: repeat(4, 1fr);
        gap: 32px;
    }
    .stat-item {
        text-align: center;
        padding: 32px 20px;
        background: var(--bg-card);
        border: 1px solid var(--border);
        border-radius: var(--radius);
        transition: var(--transition);
        position: relative;
        overflow: hidden;
    }
    .stat-item::before {
        content: '';
        position: absolute;
        top: 0;
        left: 50%;
        transform: translateX(-50%);
        width: 64px;
        height: 3px;
        border-radius: 0 0 99px 99px;
        background: linear-gradient(90deg, transparent, var(--primary), transparent);
        opacity: 0;
        transition: var(--transition);
    }
    .stat-item:hover {
        transform: translateY(-4px);
        box-shadow: var(--shadow-primary);
        border-color: rgba(0, 229, 255, 0.3);
    }
    .stat-item:hover::before {
        opacity: 1;
    }
    .stat-number {
        font-size: 42px;
        font-weight: 800;
        color: var(--primary);
        line-height: 1.2;
        margin-bottom: 8px;
        letter-spacing: -1px;
    }
    .stat-label {
        font-size: 14px;
        color: var(--text-muted);
        font-weight: 500;
    }
    .cta-section {
        padding: 80px 0 0;
    }
    .cta-card {
        background: linear-gradient(135deg, rgba(0, 229, 255, 0.12), rgba(99, 102, 241, 0.12)), var(--bg-panel);
        border: 1px solid rgba(0, 229, 255, 0.3);
        border-radius: 24px;
        padding: 56px 64px;
        text-align: center;
        position: relative;
        overflow: hidden;
        box-shadow: var(--shadow);
    }
    .cta-card::before {
        content: '';
        position: absolute;
        top: -40%;
        right: -20%;
        width: 300px;
        height: 300px;
        border-radius: 50%;
        background: radial-gradient(circle, var(--primary-glow), transparent 70%);
        pointer-events: none;
    }
    .cta-card::after {
        content: '';
        position: absolute;
        bottom: -40%;
        left: -20%;
        width: 300px;
        height: 300px;
        border-radius: 50%;
        background: radial-gradient(circle, rgba(99, 102, 241, 0.25), transparent 70%);
        pointer-events: none;
    }
    .cta-card h2 {
        font-size: 34px;
        font-weight: 800;
        color: var(--text-main);
        margin-bottom: 16px;
        position: relative;
        z-index: 1;
    }
    .cta-card p {
        color: var(--text-muted);
        font-size: 16px;
        max-width: 560px;
        margin: 0 auto 32px;
        position: relative;
        z-index: 1;
    }
    .cta-card .btn-primary-custom {
        font-size: 16px;
        padding: 14px 36px;
        position: relative;
        z-index: 1;
    }
    .faq-section {
        padding: 80px 0 96px;
    }
    .faq-list {
        max-width: 800px;
        margin: 0 auto;
    }
    .faq-item {
        background: var(--bg-card);
        border: 1px solid var(--border);
        border-radius: var(--radius-sm);
        margin-bottom: 16px;
        overflow: hidden;
        transition: var(--transition);
    }
    .faq-item:hover {
        border-color: rgba(0, 229, 255, 0.3);
    }
    .faq-item summary {
        padding: 20px 24px;
        font-size: 16px;
        font-weight: 600;
        color: var(--text-main);
        cursor: pointer;
        list-style: none;
        display: flex;
        align-items: center;
        justify-content: space-between;
        gap: 16px;
        transition: var(--transition);
    }
    .faq-item summary::-webkit-details-marker {
        display: none;
    }
    .faq-item summary::after {
        content: '\f078';
        font-family: 'Font Awesome 6 Free';
        font-weight: 900;
        font-size: 14px;
        color: var(--primary);
        transition: transform 0.3s;
        flex-shrink: 0;
    }
    .faq-item[open] summary::after {
        transform: rotate(180deg);
    }
    .faq-item summary:hover {
        color: var(--primary);
    }
    .faq-item .faq-content {
        padding: 0 24px 22px;
        color: var(--text-muted);
        font-size: 15px;
        line-height: 1.8;
    }
    .site-footer {
        background: var(--bg-panel);
        border-top: 1px solid var(--border);
        padding: 72px 0 0;
        position: relative;
    }
    .site-footer::before {
        content: '';
        position: absolute;
        top: 0;
        left: 0;
        width: 100%;
        height: 1px;
        background: linear-gradient(90deg, transparent, var(--primary), transparent);
    }
    .footer-grid {
        display: grid;
        grid-template-columns: 1.4fr 1fr 1fr 1fr;
        gap: 48px;
        padding-bottom: 48px;
    }
    .footer-brand .logo-text {
        font-size: 22px;
        margin-bottom: 12px;
        display: inline-block;
    }
    .footer-brand p {
        color: var(--text-faint);
        font-size: 14px;
        line-height: 1.8;
        margin-top: 12px;
        max-width: 320px;
    }
    .footer-links h4 {
        color: var(--text-main);
        font-size: 15px;
        font-weight: 700;
        margin-bottom: 20px;
        letter-spacing: 0.02em;
    }
    .footer-links ul {
        list-style: none;
        padding: 0;
        margin: 0;
    }
    .footer-links li {
        margin-bottom: 12px;
    }
    .footer-links li a {
        color: var(--text-faint);
        font-size: 14px;
        transition: var(--transition);
    }
    .footer-links li a:hover {
        color: var(--primary);
        padding-left: 4px;
    }
    .footer-bottom {
        border-top: 1px solid var(--border);
        padding: 24px 0;
        text-align: center;
    }
    .footer-bottom p {
        color: var(--text-faint);
        font-size: 13px;
        margin: 0;
    }
    .footer-bottom a {
        color: var(--text-faint);
    }
    .footer-bottom a:hover {
        color: var(--primary);
    }
    .section-gap {
        padding: 80px 0;
    }
    .content-wrap {
        max-width: 860px;
        margin: 0 auto;
    }
    .back-to-home {
        display: inline-flex;
        align-items: center;
        gap: 8px;
        color: var(--primary);
        font-weight: 600;
        font-size: 15px;
        transition: var(--transition);
    }
    .back-to-home:hover {
        gap: 12px;
        color: var(--primary-dark);
    }
    @media (max-width: 1024px) {
        .container-custom {
            padding: 0 24px;
        }
        .related-grid {
            grid-template-columns: repeat(2, 1fr);
            gap: 20px;
        }
        .footer-grid {
            grid-template-columns: repeat(2, 1fr);
            gap: 40px;
        }
        .nav-menu {
            display: none;
            position: absolute;
            top: 72px;
            left: 0;
            right: 0;
            background: var(--bg-dark);
            border-bottom: 1px solid var(--border);
            padding: 16px 24px;
            flex-direction: column;
            align-items: stretch;
            gap: 4px;
            box-shadow: var(--shadow-lg);
        }
        .nav-menu.open {
            display: flex;
        }
        .nav-menu li a {
            display: block;
            padding: 14px 16px;
            border-radius: 12px;
        }
        .nav-menu li a.active::after {
            display: none;
        }
        .nav-toggle {
            display: flex;
        }
        .search-box {
            display: none;
        }
        .nav-actions {
            gap: 8px;
        }
        .btn-login {
            display: none;
        }
    }
    @media (max-width: 768px) {
        :root {
            --spacing-section: 64px;
        }
        .container-custom {
            padding: 0 20px;
        }
        .article-hero {
            padding: 70px 0 60px;
        }
        .article-hero h1 {
            font-size: 28px;
        }
        .article-content-body {
            padding: 32px 24px;
        }
        .article-tags-section {
            padding: 24px 24px 16px;
        }
        .related-grid {
            grid-template-columns: 1fr;
            gap: 16px;
        }
        .stats-grid {
            grid-template-columns: repeat(2, 1fr);
            gap: 16px;
        }
        .cta-card {
            padding: 40px 28px;
        }
        .cta-card h2 {
            font-size: 26px;
        }
        .footer-grid {
            grid-template-columns: 1fr;
            gap: 32px;
        }
        .footer-brand p {
            max-width: 100%;
        }
        .article-main {
            margin-top: -30px;
        }
        .article-feature-img {
            height: 220px;
        }
    }
    @media (max-width: 520px) {
        .container-custom {
            padding: 0 16px;
        }
        .nav-container {
            height: 64px;
        }
        .logo-text {
            font-size: 18px;
        }
        .logo-icon {
            width: 34px;
            height: 34px;
            font-size: 15px;
        }
        .nav-actions .btn-primary-custom {
            padding: 8px 16px;
            font-size: 13px;
        }
        .article-hero h1 {
            font-size: 24px;
        }
        .meta-item {
            font-size: 13px;
        }
        .article-content-body {
            padding: 24px 18px;
            font-size: 15.5px;
        }
        .article-tags-section {
            padding: 20px 18px 14px;
            flex-direction: column;
            align-items: flex-start;
        }
        .related-card-img {
            height: 200px;
        }
        .stats-grid {
            grid-template-columns: 1fr;
            gap: 12px;
        }
        .stat-number {
            font-size: 32px;
        }
        .cta-card {
            padding: 32px 20px;
            border-radius: 16px;
        }
        .cta-card h2 {
            font-size: 22px;
        }
        .cta-card .btn-primary-custom {
            width: 100%;
            justify-content: center;
        }
        .faq-item summary {
            font-size: 15px;
            padding: 16px 18px;
        }
        .faq-item .faq-content {
            padding: 0 18px 18px;
            font-size: 14px;
        }
        .site-footer {
            padding-top: 48px;
        }
    }
    @media (max-width: 360px) {
        .nav-actions .btn-primary-custom {
            display: none;
        }
        .nav-toggle {
            display: flex;
        }
    }

/* roulang page: category3 */
:root {
            --primary: #7c3aed;
            --primary-dark: #6d28d9;
            --accent: #22d3ee;
            --accent-glow: rgba(34, 211, 238, 0.35);
            --hot: #f43f5e;
            --bg-deep: #0a0e17;
            --bg-body: #0b0f1a;
            --bg-card: #121a2b;
            --bg-card-hover: #16233a;
            --bg-soft: #1a2436;
            --text-main: #e8ecf4;
            --text-weak: #8b93a7;
            --border-soft: #1e2a3d;
            --border-glow: rgba(124, 58, 237, 0.4);
            --radius-lg: 18px;
            --radius-md: 12px;
            --radius-sm: 8px;
            --shadow-card: 0 12px 32px rgba(0, 0, 0, 0.45);
            --shadow-glow: 0 0 24px rgba(34, 211, 238, 0.12);
            --space-section: 90px;
            --space-section-sm: 56px;
            --font-main: "PingFang SC", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
        }

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

        html {
            scroll-behavior: smooth;
        }

        body {
            font-family: var(--font-main);
            background-color: var(--bg-body);
            color: var(--text-main);
            line-height: 1.7;
            font-size: 16px;
            -webkit-font-smoothing: antialiased;
            overflow-x: hidden;
        }

        a {
            color: inherit;
            text-decoration: none;
            transition: all 0.25s ease;
        }

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

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

        ul,
        ol {
            list-style: none;
        }

        .container-custom {
            max-width: 1240px;
            margin: 0 auto;
            padding: 0 24px;
        }

        /* ===== Header / Nav ===== */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 999;
            background: rgba(10, 14, 23, 0.86);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border-bottom: 1px solid rgba(30, 42, 61, 0.8);
            box-shadow: 0 4px 24px rgba(0, 0, 0, 0.4);
        }

        .nav-container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 72px;
            gap: 20px;
        }

        .logo-area {
            display: flex;
            align-items: center;
            gap: 10px;
            flex-shrink: 0;
        }

        .logo-icon {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 36px;
            height: 36px;
            background: linear-gradient(135deg, var(--primary), var(--accent));
            border-radius: 10px;
            font-size: 16px;
            color: #fff;
            box-shadow: 0 0 16px rgba(124, 58, 237, 0.45);
        }

        .logo-text {
            font-size: 22px;
            font-weight: 800;
            letter-spacing: -0.5px;
            background: linear-gradient(90deg, #c4b5fd, #67e8f9);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            white-space: nowrap;
        }

        .nav-menu {
            display: flex;
            align-items: center;
            gap: 4px;
            margin: 0;
            padding: 0;
            list-style: none;
        }

        .nav-menu li a {
            display: block;
            padding: 8px 16px;
            font-size: 15px;
            font-weight: 500;
            color: var(--text-weak);
            border-radius: 999px;
            transition: all 0.25s ease;
            position: relative;
        }

        .nav-menu li a:hover {
            color: #fff;
            background: rgba(124, 58, 237, 0.14);
        }

        .nav-menu li a.active {
            color: #fff;
            background: linear-gradient(120deg, rgba(124, 58, 237, 0.25), rgba(34, 211, 238, 0.18));
            box-shadow: inset 0 0 0 1px rgba(124, 58, 237, 0.3);
        }

        .nav-menu li a.active::after {
            content: "";
            position: absolute;
            bottom: 2px;
            left: 50%;
            transform: translateX(-50%);
            width: 18px;
            height: 2px;
            border-radius: 2px;
            background: var(--accent);
            box-shadow: 0 0 8px var(--accent-glow);
        }

        .nav-actions {
            display: flex;
            align-items: center;
            gap: 10px;
            flex-shrink: 0;
        }

        .search-box {
            display: flex;
            align-items: center;
            background: rgba(255, 255, 255, 0.05);
            border: 1px solid var(--border-soft);
            border-radius: 999px;
            padding: 0 14px;
            height: 38px;
            gap: 8px;
            transition: all 0.25s ease;
        }

        .search-box i {
            font-size: 13px;
            color: var(--text-weak);
        }

        .search-box input {
            background: transparent;
            border: none;
            color: var(--text-main);
            font-size: 13px;
            width: 110px;
            transition: width 0.3s ease;
        }

        .search-box input::placeholder {
            color: #6b7280;
        }

        .search-box input:focus {
            width: 150px;
        }

        .search-box:focus-within {
            border-color: var(--primary);
            box-shadow: 0 0 0 3px rgba(124, 58, 237, 0.2);
        }

        .btn-login {
            padding: 7px 18px;
            font-size: 14px;
            font-weight: 600;
            color: var(--text-main);
            border: 1px solid var(--border-soft);
            border-radius: 999px;
            background: transparent;
            transition: all 0.25s ease;
            cursor: pointer;
        }

        .btn-login:hover {
            border-color: var(--primary);
            color: #fff;
            background: rgba(124, 58, 237, 0.12);
        }

        .btn-primary-custom {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 8px 20px;
            font-size: 14px;
            font-weight: 600;
            color: #fff;
            background: linear-gradient(135deg, var(--primary), #a855f7);
            border-radius: 999px;
            box-shadow: 0 4px 16px rgba(124, 58, 237, 0.35);
            transition: all 0.25s ease;
            white-space: nowrap;
        }

        .btn-primary-custom:hover {
            transform: translateY(-2px);
            box-shadow: 0 8px 24px rgba(124, 58, 237, 0.5);
            color: #fff;
        }

        .nav-toggle {
            display: none;
            width: 40px;
            height: 40px;
            align-items: center;
            justify-content: center;
            font-size: 18px;
            color: var(--text-main);
            border-radius: 10px;
            background: rgba(255, 255, 255, 0.05);
            border: 1px solid var(--border-soft);
            cursor: pointer;
        }

        /* ===== Hero Banner ===== */
        .page-banner {
            position: relative;
            padding: 100px 0 90px;
            background: linear-gradient(135deg, rgba(10, 14, 23, 0.9), rgba(11, 15, 26, 0.7)),
                url('/assets/images/backpic/back-1.png') center/cover no-repeat;
            text-align: center;
            border-bottom: 1px solid rgba(30, 42, 61, 0.6);
            overflow: hidden;
        }

        .page-banner::before {
            content: "";
            position: absolute;
            top: -60%;
            left: 50%;
            transform: translateX(-50%);
            width: 700px;
            height: 500px;
            background: radial-gradient(ellipse, rgba(124, 58, 237, 0.2), transparent 65%);
            pointer-events: none;
        }

        .page-banner .breadcrumb {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            font-size: 13px;
            color: var(--text-weak);
            background: rgba(255, 255, 255, 0.04);
            padding: 6px 18px;
            border-radius: 999px;
            border: 1px solid rgba(255, 255, 255, 0.06);
            margin-bottom: 22px;
        }

        .page-banner .breadcrumb a {
            color: var(--accent);
        }

        .page-banner .breadcrumb a:hover {
            color: #67e8f9;
        }

        .page-banner h1 {
            font-size: 44px;
            font-weight: 800;
            letter-spacing: -1px;
            line-height: 1.3;
            margin-bottom: 14px;
            background: linear-gradient(90deg, #e0e7ff, #a5f3fc, #c4b5fd);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }

        .page-banner .banner-subtitle {
            font-size: 17px;
            color: var(--text-weak);
            max-width: 620px;
            margin: 0 auto 28px;
            line-height: 1.8;
        }

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

        .btn-outline-light-custom {
            display: inline-flex;
            align-items: center;
            gap: 7px;
            padding: 9px 24px;
            font-size: 14px;
            font-weight: 600;
            color: var(--text-main);
            border: 1px solid var(--border-soft);
            border-radius: 999px;
            background: rgba(255, 255, 255, 0.03);
            transition: all 0.25s ease;
        }

        .btn-outline-light-custom:hover {
            border-color: var(--accent);
            color: #a5f3fc;
            background: rgba(34, 211, 238, 0.08);
        }

        /* ===== Section ===== */
        .section-block {
            padding: var(--space-section) 0;
        }

        .section-block-sm {
            padding: var(--space-section-sm) 0;
        }

        .section-head {
            margin-bottom: 44px;
            display: flex;
            align-items: flex-end;
            justify-content: space-between;
            gap: 30px;
            flex-wrap: wrap;
        }

        .section-head .tagline {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            font-size: 13px;
            font-weight: 600;
            color: var(--accent);
            text-transform: uppercase;
            letter-spacing: 1.5px;
            margin-bottom: 8px;
        }

        .section-head .tagline::before {
            content: "";
            width: 24px;
            height: 2px;
            background: var(--accent);
            border-radius: 2px;
        }

        .section-head h2 {
            font-size: 30px;
            font-weight: 800;
            letter-spacing: -0.5px;
            line-height: 1.3;
            margin-bottom: 0;
        }

        .section-head .section-desc {
            color: var(--text-weak);
            font-size: 15px;
            max-width: 540px;
            line-height: 1.8;
            margin-top: 6px;
        }

        .section-head .head-link {
            font-size: 14px;
            font-weight: 600;
            color: var(--accent);
            white-space: nowrap;
            display: inline-flex;
            align-items: center;
            gap: 5px;
        }

        .section-head .head-link:hover {
            color: #67e8f9;
            gap: 9px;
        }

        .divider {
            border: 0;
            height: 1px;
            background: linear-gradient(90deg, transparent, var(--border-soft), transparent);
            margin: 0;
        }

        /* ===== Steps / Timeline ===== */
        .steps-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
        }

        .step-card {
            position: relative;
            background: var(--bg-card);
            border: 1px solid var(--border-soft);
            border-radius: var(--radius-lg);
            padding: 32px 22px 26px;
            text-align: center;
            transition: all 0.3s ease;
        }

        .step-card:hover {
            transform: translateY(-6px);
            border-color: rgba(124, 58, 237, 0.5);
            box-shadow: var(--shadow-card);
        }

        .step-num {
            font-size: 13px;
            font-weight: 800;
            color: var(--accent);
            letter-spacing: 1px;
            background: rgba(34, 211, 238, 0.1);
            padding: 4px 12px;
            border-radius: 999px;
            display: inline-block;
            margin-bottom: 14px;
        }

        .step-card .step-icon {
            font-size: 32px;
            margin-bottom: 14px;
            color: var(--primary);
            background: rgba(124, 58, 237, 0.12);
            width: 64px;
            height: 64px;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            border-radius: 20px;
            margin-bottom: 18px;
        }

        .step-card h3 {
            font-size: 17px;
            font-weight: 700;
            margin-bottom: 8px;
        }

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

        /* ===== Cards ===== */
        .guide-card-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }

        .guide-card {
            background: var(--bg-card);
            border: 1px solid var(--border-soft);
            border-radius: var(--radius-lg);
            overflow: hidden;
            transition: all 0.3s ease;
            height: 100%;
            display: flex;
            flex-direction: column;
        }

        .guide-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-card);
            border-color: rgba(124, 58, 237, 0.45);
        }

        .guide-card .card-img-wrap {
            position: relative;
            overflow: hidden;
            aspect-ratio: 16/9;
        }

        .guide-card .card-img-wrap img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.5s ease;
        }

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

        .guide-card .card-img-wrap::after {
            content: "";
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, transparent 60%, rgba(10, 14, 23, 0.8));
        }

        .guide-card .card-tag {
            position: absolute;
            top: 14px;
            left: 14px;
            z-index: 2;
            font-size: 11px;
            font-weight: 700;
            color: #fff;
            background: linear-gradient(135deg, var(--primary), #a855f7);
            padding: 4px 12px;
            border-radius: 999px;
            letter-spacing: 0.5px;
        }

        .guide-card .card-tag.hot {
            background: linear-gradient(135deg, var(--hot), #fb7185);
        }

        .guide-card .card-tag.tech {
            background: linear-gradient(135deg, #0891b2, var(--accent));
        }

        .guide-card .card-body {
            padding: 22px 22px 18px;
            flex: 1;
            display: flex;
            flex-direction: column;
        }

        .guide-card .card-body h3 {
            font-size: 17px;
            font-weight: 700;
            line-height: 1.5;
            margin-bottom: 10px;
        }

        .guide-card .card-body p {
            font-size: 14px;
            color: var(--text-weak);
            line-height: 1.7;
            flex: 1;
            margin-bottom: 16px;
        }

        .guide-card .card-meta {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding-top: 14px;
            border-top: 1px solid var(--border-soft);
            font-size: 12px;
            color: var(--text-weak);
        }

        .guide-card .card-meta span {
            display: inline-flex;
            align-items: center;
            gap: 5px;
        }

        /* ===== Featured Split ===== */
        .feature-split {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 50px;
            align-items: center;
        }

        .feature-image {
            position: relative;
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-card);
        }

        .feature-image::after {
            content: "";
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(124, 58, 237, 0.12), transparent 60%);
        }

        .feature-image img {
            width: 100%;
            display: block;
        }

        .feature-content .feature-label {
            font-size: 13px;
            font-weight: 700;
            color: var(--accent);
            letter-spacing: 1px;
            text-transform: uppercase;
            margin-bottom: 10px;
            display: inline-flex;
            align-items: center;
            gap: 7px;
        }

        .feature-content .feature-label::before {
            content: "";
            width: 20px;
            height: 2px;
            background: var(--accent);
        }

        .feature-content h2 {
            font-size: 28px;
            font-weight: 800;
            line-height: 1.35;
            margin-bottom: 16px;
            letter-spacing: -0.3px;
        }

        .feature-content p {
            color: var(--text-weak);
            font-size: 15px;
            line-height: 1.85;
            margin-bottom: 20px;
        }

        .feature-list {
            margin-bottom: 24px;
        }

        .feature-list li {
            display: flex;
            align-items: flex-start;
            gap: 10px;
            padding: 6px 0;
            font-size: 14px;
            color: var(--text-main);
        }

        .feature-list li i {
            color: var(--accent);
            margin-top: 4px;
            font-size: 13px;
        }

        /* ===== Tips List ===== */
        .tips-panel {
            background: var(--bg-card);
            border: 1px solid var(--border-soft);
            border-radius: var(--radius-lg);
            padding: 40px;
            position: relative;
            overflow: hidden;
        }

        .tips-panel::before {
            content: "";
            position: absolute;
            top: -100px;
            right: -100px;
            width: 300px;
            height: 300px;
            background: radial-gradient(circle, rgba(34, 211, 238, 0.08), transparent 60%);
            pointer-events: none;
        }

        .tips-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 14px;
            margin-top: 20px;
        }

        .tips-grid li {
            display: flex;
            align-items: center;
            gap: 14px;
            background: rgba(255, 255, 255, 0.02);
            border: 1px solid rgba(255, 255, 255, 0.04);
            border-radius: var(--radius-md);
            padding: 14px 18px;
            font-size: 14px;
            transition: all 0.25s ease;
        }

        .tips-grid li:hover {
            background: rgba(124, 58, 237, 0.08);
            border-color: rgba(124, 58, 237, 0.3);
            transform: translateX(4px);
        }

        .tips-grid li .tip-index {
            flex-shrink: 0;
            width: 28px;
            height: 28px;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            font-size: 13px;
            font-weight: 700;
            color: var(--accent);
            background: rgba(34, 211, 238, 0.1);
            border-radius: 8px;
        }

        /* ===== FAQ ===== */
        .faq-wrap {
            max-width: 860px;
            margin: 0 auto;
        }

        .faq-item {
            background: var(--bg-card);
            border: 1px solid var(--border-soft);
            border-radius: var(--radius-md);
            margin-bottom: 14px;
            overflow: hidden;
            transition: all 0.3s ease;
        }

        .faq-item:hover {
            border-color: rgba(124, 58, 237, 0.35);
        }

        .faq-item summary {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 18px 22px;
            font-size: 15px;
            font-weight: 600;
            cursor: pointer;
            list-style: none;
            gap: 16px;
        }

        .faq-item summary::-webkit-details-marker {
            display: none;
        }

        .faq-item summary i {
            color: var(--accent);
            transition: transform 0.3s ease;
            font-size: 14px;
            flex-shrink: 0;
        }

        .faq-item[open] summary i {
            transform: rotate(45deg);
        }

        .faq-item .faq-answer {
            padding: 0 22px 18px;
            font-size: 14px;
            color: var(--text-weak);
            line-height: 1.8;
        }

        /* ===== CTA ===== */
        .cta-section {
            background: linear-gradient(135deg, rgba(124, 58, 237, 0.12), rgba(34, 211, 238, 0.08)),
                url('/assets/images/backpic/back-2.png') center/cover no-repeat;
            border-radius: 24px;
            padding: 70px 50px;
            text-align: center;
            border: 1px solid rgba(124, 58, 237, 0.25);
            position: relative;
            overflow: hidden;
        }

        .cta-section::before {
            content: "";
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            background: linear-gradient(180deg, rgba(10, 14, 23, 0.7), rgba(10, 14, 23, 0.85));
            z-index: 0;
        }

        .cta-section>* {
            position: relative;
            z-index: 1;
        }

        .cta-section h2 {
            font-size: 32px;
            font-weight: 800;
            margin-bottom: 14px;
            color: #fff;
        }

        .cta-section p {
            font-size: 16px;
            color: var(--text-weak);
            max-width: 520px;
            margin: 0 auto 30px;
            line-height: 1.8;
        }

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

        .btn-cta-primary {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 12px 32px;
            font-size: 15px;
            font-weight: 700;
            color: #fff;
            background: linear-gradient(135deg, var(--primary), #a855f7);
            border-radius: 999px;
            box-shadow: 0 4px 20px rgba(124, 58, 237, 0.4);
            transition: all 0.25s ease;
        }

        .btn-cta-primary:hover {
            transform: translateY(-3px);
            box-shadow: 0 8px 30px rgba(124, 58, 237, 0.55);
            color: #fff;
        }

        .btn-cta-ghost {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 12px 32px;
            font-size: 15px;
            font-weight: 600;
            color: var(--text-main);
            border: 1px solid rgba(255, 255, 255, 0.2);
            border-radius: 999px;
            background: rgba(255, 255, 255, 0.03);
            transition: all 0.25s ease;
        }

        .btn-cta-ghost:hover {
            border-color: var(--accent);
            color: #a5f3fc;
            background: rgba(34, 211, 238, 0.06);
        }

        /* ===== Footer ===== */
        .site-footer {
            background: #070a12;
            border-top: 1px solid rgba(30, 42, 61, 0.8);
            padding-top: 60px;
            margin-top: 80px;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 1.6fr 1fr 1fr 1fr;
            gap: 40px;
            padding-bottom: 40px;
        }

        .footer-brand .logo-text {
            font-size: 20px;
            margin-bottom: 12px;
            display: inline-block;
        }

        .footer-brand p {
            font-size: 14px;
            color: var(--text-weak);
            line-height: 1.7;
            max-width: 300px;
            margin-bottom: 20px;
        }

        .footer-links h4 {
            font-size: 14px;
            font-weight: 600;
            color: #d1d5db;
            margin-bottom: 18px;
            letter-spacing: 0.5px;
        }

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

        .footer-links ul li a {
            font-size: 14px;
            color: var(--text-weak);
            transition: all 0.2s ease;
        }

        .footer-links ul li a:hover {
            color: var(--accent);
        }

        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.06);
            padding: 18px 0;
            text-align: center;
            font-size: 13px;
            color: var(--text-weak);
        }

        .footer-bottom a {
            color: var(--accent);
        }

        .footer-bottom a:hover {
            text-decoration: underline;
        }

        /* ===== Responsive ===== */
        @media (max-width: 1024px) {
            .nav-menu {
                position: fixed;
                top: 72px;
                left: 0;
                right: 0;
                background: rgba(10, 14, 23, 0.97);
                flex-direction: column;
                align-items: flex-start;
                padding: 20px 24px 28px;
                gap: 8px;
                display: none;
                box-shadow: 0 16px 40px rgba(0, 0, 0, 0.5);
                border-bottom: 1px solid var(--border-soft);
            }

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

            .nav-menu li a {
                font-size: 16px;
                padding: 12px 14px;
                width: 100%;
                border-radius: 10px;
            }

            .nav-toggle {
                display: inline-flex;
            }

            .search-box {
                display: none;
            }

            .btn-login {
                display: none;
            }

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

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

            .feature-split {
                grid-template-columns: 1fr;
                gap: 30px;
            }

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

        @media (max-width: 768px) {
            :root {
                --space-section: 56px;
            }

            .page-banner {
                padding: 70px 0 60px;
            }

            .page-banner h1 {
                font-size: 34px;
            }

            .section-head {
                flex-direction: column;
                align-items: flex-start;
                gap: 12px;
                margin-bottom: 30px;
            }

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

            .steps-grid {
                grid-template-columns: 1fr;
                gap: 16px;
            }

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

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

            .cta-section {
                padding: 44px 22px;
            }

            .cta-section h2 {
                font-size: 26px;
            }

            .tips-panel {
                padding: 24px;
            }

            .footer-grid {
                grid-template-columns: 1fr;
                gap: 30px;
            }

            .banner-cta {
                flex-direction: column;
                align-items: center;
            }
        }

        @media (max-width: 520px) {
            .container-custom {
                padding: 0 16px;
            }

            .logo-text {
                font-size: 18px;
            }

            .logo-icon {
                width: 30px;
                height: 30px;
                font-size: 13px;
            }

            .btn-primary-custom {
                padding: 7px 14px;
                font-size: 13px;
            }

            .page-banner h1 {
                font-size: 27px;
            }

            .page-banner .banner-subtitle {
                font-size: 14px;
            }

            .section-head h2 {
                font-size: 21px;
            }

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

            .guide-card .card-body h3 {
                font-size: 15px;
            }

            .tips-grid li {
                font-size: 13px;
                padding: 12px 14px;
            }
        }

/* roulang page: category2 */
:root {
            --bg-body: #080d1a;
            --bg-header: rgba(8, 13, 26, .92);
            --bg-card: #101830;
            --bg-panel: #131c38;
            --bg-hover: #182346;
            --neon-green: #00e88f;
            --neon-pink: #ff3c6f;
            --neon-purple: #8b5cf6;
            --neon-blue: #38bdf8;
            --text-primary: #e6ecf9;
            --text-secondary: #9aa8c3;
            --text-muted: #5c6a89;
            --border-standard: #1e2a4a;
            --border-light: #2b3a63;
            --radius-lg: 18px;
            --radius-md: 12px;
            --radius-sm: 8px;
            --shadow-card: 0 12px 36px rgba(0, 0, 0, .45);
            --shadow-neon: 0 0 24px rgba(0, 232, 143, .12);
            --transition-fast: .2s ease;
            --transition-normal: .3s ease;
            --gradient-primary: linear-gradient(135deg, #00e88f 0%, #38bdf8 100%);
            --gradient-accent: linear-gradient(135deg, #8b5cf6 0%, #ff3c6f 100%);
            --font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
        }

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

        html {
            scroll-behavior: smooth;
        }

        body {
            font-family: var(--font-family);
            background: var(--bg-body);
            color: var(--text-primary);
            line-height: 1.7;
            -webkit-font-smoothing: antialiased;
            overflow-x: hidden;
        }

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

        a {
            color: var(--neon-blue);
            text-decoration: none;
            transition: color var(--transition-fast);
        }
        a:hover {
            color: var(--neon-green);
        }

        .container-custom {
            width: 100%;
            max-width: 1280px;
            margin: 0 auto;
            padding-left: 24px;
            padding-right: 24px;
        }

        /* ===== Header / Nav ===== */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 1000;
            background: var(--bg-header);
            backdrop-filter: blur(20px);
            -webkit-backdrop-filter: blur(20px);
            border-bottom: 1px solid rgba(255, 255, 255, .06);
        }

        .nav-container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            min-height: 72px;
            gap: 20px;
        }

        .logo-area {
            display: flex;
            align-items: center;
            gap: 10px;
            flex-shrink: 0;
        }

        .logo-icon {
            width: 38px;
            height: 38px;
            border-radius: 10px;
            background: var(--gradient-primary);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 16px;
            color: #0a0e1a;
            box-shadow: 0 0 16px rgba(0, 232, 143, .4);
        }

        .logo-text {
            font-size: 22px;
            font-weight: 800;
            color: var(--text-primary);
            letter-spacing: .5px;
            background: var(--gradient-primary);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            transition: opacity var(--transition-fast);
        }
        .logo-text:hover {
            opacity: .8;
        }

        .nav-menu {
            display: flex;
            align-items: center;
            gap: 8px;
            list-style: none;
        }

        .nav-menu li a {
            display: block;
            padding: 10px 18px;
            border-radius: 10px;
            font-size: 15px;
            font-weight: 500;
            color: var(--text-secondary);
            position: relative;
            transition: all var(--transition-fast);
        }
        .nav-menu li a::after {
            content: '';
            position: absolute;
            bottom: 4px;
            left: 50%;
            transform: translateX(-50%);
            width: 0;
            height: 2px;
            background: var(--gradient-primary);
            border-radius: 2px;
            transition: width var(--transition-normal);
        }
        .nav-menu li a:hover {
            color: var(--text-primary);
        }
        .nav-menu li a:hover::after {
            width: 24px;
        }
        .nav-menu li a.active {
            color: var(--neon-green);
            background: rgba(0, 232, 143, .08);
        }
        .nav-menu li a.active::after {
            width: 24px;
        }

        .nav-actions {
            display: flex;
            align-items: center;
            gap: 12px;
            flex-shrink: 0;
        }

        .search-box {
            display: flex;
            align-items: center;
            gap: 8px;
            background: rgba(255, 255, 255, .05);
            border: 1px solid var(--border-standard);
            border-radius: 50px;
            padding: 7px 16px;
            transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
        }
        .search-box i {
            color: var(--text-muted);
            font-size: 13px;
        }
        .search-box input {
            border: none;
            background: transparent;
            color: var(--text-primary);
            outline: none;
            width: 120px;
            font-size: 14px;
        }
        .search-box input::placeholder {
            color: var(--text-muted);
        }
        .search-box:focus-within {
            border-color: var(--neon-green);
            box-shadow: 0 0 12px rgba(0, 232, 143, .15);
        }

        .btn-login {
            background: transparent;
            border: 1px solid var(--border-light);
            color: var(--text-primary);
            padding: 8px 20px;
            border-radius: 50px;
            font-size: 14px;
            font-weight: 500;
            cursor: pointer;
            transition: all var(--transition-fast);
        }
        .btn-login:hover {
            border-color: var(--neon-green);
            color: var(--neon-green);
            box-shadow: 0 0 12px rgba(0, 232, 143, .1);
        }

        .btn-primary-custom {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: var(--gradient-primary);
            color: #0a0e1a;
            border: none;
            border-radius: 50px;
            padding: 10px 22px;
            font-size: 14px;
            font-weight: 700;
            cursor: pointer;
            transition: all var(--transition-normal);
            box-shadow: 0 4px 18px rgba(0, 232, 143, .25);
        }
        .btn-primary-custom:hover {
            transform: translateY(-2px);
            box-shadow: 0 8px 26px rgba(0, 232, 143, .35);
            color: #0a0e1a;
        }
        .btn-primary-custom:active {
            transform: translateY(0);
        }

        .nav-toggle {
            display: none;
            background: transparent;
            border: 1px solid var(--border-light);
            color: var(--text-primary);
            width: 40px;
            height: 40px;
            border-radius: 10px;
            font-size: 18px;
            cursor: pointer;
            align-items: center;
            justify-content: center;
            transition: all var(--transition-fast);
        }
        .nav-toggle:hover {
            border-color: var(--neon-green);
            color: var(--neon-green);
        }

        /* ===== Page Hero ===== */
        .page-hero {
            position: relative;
            min-height: 460px;
            display: flex;
            align-items: center;
            background-image: url('/assets/images/backpic/back-2.png');
            background-size: cover;
            background-position: center;
            padding: 80px 0;
            overflow: hidden;
        }
        .page-hero::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(8, 13, 26, .95) 20%, rgba(8, 13, 26, .7) 60%, rgba(139, 92, 246, .3) 100%);
        }
        .page-hero .container-custom {
            position: relative;
            z-index: 2;
        }

        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: rgba(0, 232, 143, .1);
            border: 1px solid rgba(0, 232, 143, .4);
            color: var(--neon-green);
            font-size: 13px;
            font-weight: 600;
            letter-spacing: 2px;
            padding: 6px 18px;
            border-radius: 50px;
            margin-bottom: 24px;
            text-transform: uppercase;
        }
        .hero-badge::before {
            content: '';
            width: 6px;
            height: 6px;
            border-radius: 50%;
            background: var(--neon-green);
            box-shadow: 0 0 8px var(--neon-green);
        }

        .page-hero h1 {
            font-size: 52px;
            font-weight: 800;
            line-height: 1.2;
            margin-bottom: 20px;
            letter-spacing: 1px;
        }
        .page-hero h1 span {
            background: var(--gradient-primary);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }

        .page-hero .hero-desc {
            font-size: 18px;
            color: var(--text-secondary);
            max-width: 620px;
            margin-bottom: 32px;
            line-height: 1.8;
        }

        .hero-actions {
            display: flex;
            flex-wrap: wrap;
            gap: 14px;
        }

        .btn-outline-neon {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: transparent;
            border: 1px solid var(--neon-pink);
            color: var(--neon-pink);
            padding: 11px 26px;
            border-radius: 50px;
            font-size: 15px;
            font-weight: 600;
            cursor: pointer;
            transition: all var(--transition-normal);
        }
        .btn-outline-neon:hover {
            background: rgba(255, 60, 111, .1);
            box-shadow: 0 0 20px rgba(255, 60, 111, .2);
            color: var(--neon-pink);
        }

        /* ===== Stats ===== */
        .stats-section {
            padding: 80px 0;
            background: var(--bg-body);
        }

        .stat-card {
            background: linear-gradient(145deg, rgba(19, 28, 56, .8), rgba(10, 14, 26, .9));
            border: 1px solid var(--border-standard);
            border-radius: var(--radius-lg);
            padding: 32px 24px;
            text-align: center;
            transition: all var(--transition-normal);
            position: relative;
            overflow: hidden;
        }
        .stat-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 3px;
            background: var(--gradient-primary);
            opacity: 0;
            transition: opacity var(--transition-normal);
        }
        .stat-card:hover {
            border-color: var(--border-light);
            transform: translateY(-6px);
            box-shadow: var(--shadow-card);
        }
        .stat-card:hover::before {
            opacity: 1;
        }

        .stat-card .value {
            font-size: 40px;
            font-weight: 800;
            background: var(--gradient-primary);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            line-height: 1.2;
        }
        .stat-card .label {
            margin-top: 8px;
            color: var(--text-secondary);
            font-size: 15px;
        }

        /* ===== Section Base ===== */
        .section-block {
            padding: 90px 0;
        }
        .section-alt {
            background: rgba(16, 24, 48, .4);
        }
        .section-header {
            text-align: center;
            max-width: 680px;
            margin: 0 auto 56px;
        }
        .section-header .section-tag {
            display: inline-block;
            background: rgba(139, 92, 246, .1);
            border: 1px solid rgba(139, 92, 246, .3);
            color: var(--neon-purple);
            font-size: 13px;
            font-weight: 600;
            padding: 5px 16px;
            border-radius: 50px;
            letter-spacing: 2px;
            margin-bottom: 16px;
        }
        .section-header h2 {
            font-size: 36px;
            font-weight: 800;
            margin-bottom: 14px;
            line-height: 1.3;
        }
        .section-header p {
            color: var(--text-secondary);
            font-size: 16px;
            line-height: 1.8;
        }

        /* ===== Topics ===== */
        .topic-card {
            background: var(--bg-card);
            border: 1px solid var(--border-standard);
            border-radius: var(--radius-lg);
            overflow: hidden;
            height: 100%;
            transition: all var(--transition-normal);
            display: flex;
            flex-direction: column;
        }
        .topic-card:hover {
            transform: translateY(-8px);
            border-color: rgba(0, 232, 143, .4);
            box-shadow: var(--shadow-card), var(--shadow-neon);
        }

        .topic-card .topic-img {
            position: relative;
            overflow: hidden;
            aspect-ratio: 16 / 10;
        }
        .topic-card .topic-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform .5s ease;
        }
        .topic-card:hover .topic-img img {
            transform: scale(1.06);
        }
        .topic-card .topic-img::after {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(to top, rgba(10, 14, 26, .6), transparent 40%);
        }

        .topic-card .topic-tag {
            position: absolute;
            top: 16px;
            left: 16px;
            z-index: 2;
            display: inline-flex;
            align-items: center;
            gap: 6px;
            background: rgba(8, 13, 26, .85);
            border: 1px solid rgba(255, 255, 255, .15);
            color: var(--neon-green);
            font-size: 12px;
            font-weight: 600;
            padding: 5px 14px;
            border-radius: 50px;
            backdrop-filter: blur(6px);
        }

        .topic-card .topic-body {
            padding: 24px;
            flex: 1;
            display: flex;
            flex-direction: column;
        }
        .topic-card .topic-body h3 {
            font-size: 19px;
            font-weight: 700;
            line-height: 1.5;
            margin-bottom: 10px;
            transition: color var(--transition-fast);
        }
        .topic-card:hover .topic-body h3 {
            color: var(--neon-green);
        }
        .topic-card .topic-body p {
            color: var(--text-secondary);
            font-size: 14px;
            line-height: 1.7;
            flex: 1;
            margin-bottom: 16px;
        }
        .topic-card .topic-meta {
            display: flex;
            align-items: center;
            justify-content: space-between;
            border-top: 1px solid rgba(255, 255, 255, .06);
            padding-top: 14px;
            color: var(--text-muted);
            font-size: 13px;
        }
        .topic-meta a {
            color: var(--neon-blue);
            font-weight: 500;
            transition: color var(--transition-fast);
        }
        .topic-meta a:hover {
            color: var(--neon-green);
        }

        /* ===== Activities ===== */
        .activity-list {
            position: relative;
            padding-left: 40px;
        }
        .activity-list::before {
            content: '';
            position: absolute;
            left: 14px;
            top: 0;
            bottom: 0;
            width: 2px;
            background: linear-gradient(to bottom, var(--neon-green), var(--neon-purple), var(--neon-pink));
            border-radius: 2px;
        }

        .activity-item {
            position: relative;
            background: var(--bg-card);
            border: 1px solid var(--border-standard);
            border-radius: var(--radius-lg);
            padding: 28px;
            margin-bottom: 24px;
            transition: all var(--transition-normal);
        }
        .activity-item:hover {
            border-color: rgba(139, 92, 246, .4);
            box-shadow: var(--shadow-card);
            transform: translateX(6px);
        }
        .activity-item::before {
            content: '';
            position: absolute;
            left: -34px;
            top: 36px;
            width: 14px;
            height: 14px;
            border-radius: 50%;
            background: var(--bg-body);
            border: 3px solid var(--neon-green);
            box-shadow: 0 0 12px rgba(0, 232, 143, .4);
        }
        .activity-item:nth-child(2)::before {
            border-color: var(--neon-purple);
            box-shadow: 0 0 12px rgba(139, 92, 246, .4);
        }
        .activity-item:nth-child(3)::before {
            border-color: var(--neon-pink);
            box-shadow: 0 0 12px rgba(255, 60, 111, .4);
        }

        .activity-item .activity-icon {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 44px;
            height: 44px;
            border-radius: 12px;
            background: rgba(0, 232, 143, .12);
            color: var(--neon-green);
            font-size: 18px;
            margin-bottom: 16px;
        }
        .activity-item:nth-child(2) .activity-icon {
            background: rgba(139, 92, 246, .12);
            color: var(--neon-purple);
        }
        .activity-item:nth-child(3) .activity-icon {
            background: rgba(255, 60, 111, .12);
            color: var(--neon-pink);
        }

        .activity-item h4 {
            font-size: 20px;
            font-weight: 700;
            margin-bottom: 6px;
        }
        .activity-item .activity-time {
            color: var(--neon-green);
            font-size: 13px;
            font-weight: 600;
            margin-bottom: 12px;
            display: flex;
            align-items: center;
            gap: 6px;
        }
        .activity-item p {
            color: var(--text-secondary);
            font-size: 15px;
            line-height: 1.7;
            margin-bottom: 0;
        }

        /* ===== Rankings ===== */
        .rank-panel {
            background: linear-gradient(145deg, var(--bg-panel), var(--bg-body));
            border: 1px solid var(--border-standard);
            border-radius: var(--radius-lg);
            padding: 36px;
            position: relative;
            overflow: hidden;
        }
        .rank-panel::before {
            content: '';
            position: absolute;
            top: -80px;
            right: -80px;
            width: 220px;
            height: 220px;
            border-radius: 50%;
            background: radial-gradient(circle, rgba(139, 92, 246, .15), transparent 70%);
        }

        .rank-row {
            display: flex;
            align-items: center;
            padding: 18px 20px;
            border-radius: var(--radius-md);
            margin-bottom: 10px;
            background: rgba(255, 255, 255, .02);
            border: 1px solid transparent;
            transition: all var(--transition-fast);
        }
        .rank-row:hover {
            background: rgba(0, 232, 143, .05);
            border-color: rgba(0, 232, 143, .2);
        }
        .rank-row:last-child {
            margin-bottom: 0;
        }

        .rank-num {
            width: 40px;
            height: 40px;
            border-radius: 10px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 800;
            font-size: 16px;
            background: rgba(255, 255, 255, .06);
            color: var(--text-secondary);
            margin-right: 16px;
            flex-shrink: 0;
        }
        .rank-row:nth-child(1) .rank-num {
            background: linear-gradient(135deg, #ffd700, #b8860b);
            color: #0a0e1a;
            box-shadow: 0 0 16px rgba(255, 215, 0, .3);
        }
        .rank-row:nth-child(2) .rank-num {
            background: linear-gradient(135deg, #c0c0c0, #808080);
            color: #0a0e1a;
        }
        .rank-row:nth-child(3) .rank-num {
            background: linear-gradient(135deg, #cd7f32, #8b4513);
            color: #fff;
        }

        .rank-info {
            flex: 1;
            min-width: 0;
        }
        .rank-info .name {
            font-weight: 700;
            font-size: 16px;
            color: var(--text-primary);
            white-space: nowrap;
            overflow: hidden;
            text-overflow: ellipsis;
        }
        .rank-info .team {
            font-size: 13px;
            color: var(--text-muted);
        }

        .rank-stats {
            display: flex;
            align-items: center;
            gap: 28px;
            flex-shrink: 0;
        }
        .rank-stats .stat {
            text-align: right;
        }
        .rank-stats .stat .val {
            font-weight: 700;
            color: var(--text-primary);
            font-size: 15px;
        }
        .rank-stats .stat .lbl {
            font-size: 12px;
            color: var(--text-muted);
        }

        /* ===== Rules ===== */
        .rule-card {
            background: var(--bg-card);
            border: 1px solid var(--border-standard);
            border-radius: var(--radius-lg);
            padding: 30px;
            height: 100%;
            transition: all var(--transition-normal);
            text-align: center;
        }
        .rule-card:hover {
            border-color: var(--border-light);
            box-shadow: var(--shadow-card);
            transform: translateY(-4px);
        }

        .rule-card .rule-icon {
            width: 58px;
            height: 58px;
            border-radius: 16px;
            background: var(--gradient-accent);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 22px;
            color: #fff;
            margin: 0 auto 18px;
            box-shadow: 0 8px 24px rgba(255, 60, 111, .25);
        }
        .rule-card:nth-child(2) .rule-icon {
            background: var(--gradient-primary);
            box-shadow: 0 8px 24px rgba(0, 232, 143, .25);
        }
        .rule-card:nth-child(3) .rule-icon {
            background: linear-gradient(135deg, #38bdf8, #8b5cf6);
            box-shadow: 0 8px 24px rgba(139, 92, 246, .25);
        }
        .rule-card:nth-child(4) .rule-icon {
            background: linear-gradient(135deg, #f59e0b, #ff3c6f);
            box-shadow: 0 8px 24px rgba(245, 158, 11, .25);
        }

        .rule-card h4 {
            font-size: 18px;
            font-weight: 700;
            margin-bottom: 10px;
        }
        .rule-card p {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.7;
            margin-bottom: 0;
        }

        /* ===== FAQ ===== */
        .accordion-custom {
            max-width: 860px;
            margin: 0 auto;
        }
        .accordion-custom .accordion-item {
            background: var(--bg-card);
            border: 1px solid var(--border-standard);
            border-radius: var(--radius-md) !important;
            margin-bottom: 16px;
            overflow: hidden;
        }
        .accordion-custom .accordion-button {
            background: transparent;
            color: var(--text-primary);
            font-size: 16px;
            font-weight: 600;
            padding: 20px 24px;
            box-shadow: none;
            transition: color var(--transition-fast);
        }
        .accordion-custom .accordion-button:not(.collapsed) {
            color: var(--neon-green);
            background: rgba(0, 232, 143, .06);
        }
        .accordion-custom .accordion-button:focus {
            box-shadow: none;
            border-color: rgba(0, 232, 143, .3);
        }
        .accordion-custom .accordion-button::after {
            background-image: none;
            font-family: "Font Awesome 6 Free";
            font-weight: 900;
            content: "\f078";
            color: var(--text-secondary);
            width: auto;
            height: auto;
            transition: transform var(--transition-normal);
        }
        .accordion-custom .accordion-button:not(.collapsed)::after {
            transform: rotate(180deg);
            color: var(--neon-green);
        }
        .accordion-custom .accordion-body {
            padding: 0 24px 24px;
            color: var(--text-secondary);
            font-size: 15px;
            line-height: 1.8;
            border-top: 1px solid rgba(255, 255, 255, .05);
            padding-top: 16px;
        }

        /* ===== CTA ===== */
        .cta-section {
            padding: 100px 0;
            background-image: url('/assets/images/backpic/back-3.png');
            background-size: cover;
            background-position: center;
            background-attachment: fixed;
            position: relative;
        }
        .cta-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(8, 13, 26, .92), rgba(139, 92, 246, .35));
        }
        .cta-section .container-custom {
            position: relative;
            z-index: 2;
        }

        .cta-card {
            background: rgba(13, 20, 40, .7);
            backdrop-filter: blur(16px);
            border: 1px solid rgba(255, 255, 255, .1);
            border-radius: 24px;
            padding: 60px;
            text-align: center;
            max-width: 800px;
            margin: 0 auto;
        }
        .cta-card h2 {
            font-size: 36px;
            font-weight: 800;
            margin-bottom: 16px;
        }
        .cta-card p {
            color: var(--text-secondary);
            font-size: 17px;
            margin-bottom: 32px;
            max-width: 560px;
            margin-left: auto;
            margin-right: auto;
        }
        .cta-card .btn-primary-custom {
            font-size: 16px;
            padding: 14px 36px;
        }

        /* ===== Footer ===== */
        .site-footer {
            background: #060a14;
            border-top: 1px solid rgba(255, 255, 255, .06);
            padding: 70px 0 30px;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 1.4fr 1fr 1fr 1fr;
            gap: 40px;
            margin-bottom: 48px;
        }
        .footer-brand .logo-text {
            font-size: 24px;
            margin-bottom: 14px;
            display: inline-block;
        }
        .footer-brand p {
            color: var(--text-muted);
            font-size: 14px;
            line-height: 1.8;
            max-width: 280px;
            margin-top: 12px;
        }
        .footer-links h4 {
            color: var(--text-primary);
            font-size: 16px;
            font-weight: 700;
            margin-bottom: 16px;
        }
        .footer-links ul {
            list-style: none;
            padding: 0;
        }
        .footer-links ul li {
            margin-bottom: 10px;
        }
        .footer-links ul a {
            color: var(--text-muted);
            font-size: 14px;
            transition: all var(--transition-fast);
        }
        .footer-links ul a:hover {
            color: var(--neon-green);
            padding-left: 4px;
        }
        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, .06);
            padding-top: 24px;
            text-align: center;
            color: var(--text-muted);
            font-size: 13px;
        }
        .footer-bottom a {
            color: var(--text-muted);
        }
        .footer-bottom a:hover {
            color: var(--neon-green);
        }

        /* ===== Responsive ===== */
        @media (max-width: 1024px) {
            .nav-menu {
                gap: 4px;
            }
            .nav-menu li a {
                padding: 10px 12px;
                font-size: 14px;
            }
            .search-box input {
                width: 90px;
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
            }
        }

        @media (max-width: 768px) {
            .container-custom {
                padding-left: 16px;
                padding-right: 16px;
            }
            .nav-menu {
                position: fixed;
                top: 72px;
                left: 0;
                right: 0;
                background: var(--bg-header);
                backdrop-filter: blur(20px);
                flex-direction: column;
                align-items: stretch;
                padding: 16px 24px 24px;
                gap: 4px;
                border-bottom: 1px solid var(--border-standard);
                transform: translateY(-100%);
                opacity: 0;
                pointer-events: none;
                transition: all .35s ease;
                z-index: 999;
            }
            .nav-menu.open {
                transform: translateY(0);
                opacity: 1;
                pointer-events: auto;
            }
            .nav-menu li a {
                padding: 14px 16px;
                border-radius: 12px;
                font-size: 15px;
            }
            .nav-menu li a::after {
                display: none;
            }
            .nav-toggle {
                display: flex;
            }
            .search-box {
                display: none;
            }
            .btn-login {
                display: none;
            }
            .page-hero {
                min-height: 400px;
                padding: 60px 0;
            }
            .page-hero h1 {
                font-size: 36px;
            }
            .hero-desc {
                font-size: 16px !important;
            }
            .section-block {
                padding: 60px 0;
            }
            .section-header h2 {
                font-size: 28px;
            }
            .stats-section {
                padding: 50px 0;
            }
            .activity-list {
                padding-left: 28px;
            }
            .activity-item::before {
                left: -22px;
            }
            .rank-panel {
                padding: 24px;
            }
            .rank-row {
                flex-wrap: wrap;
                gap: 10px;
            }
            .rank-stats {
                width: 100%;
                justify-content: flex-end;
                gap: 20px;
            }
            .cta-card {
                padding: 40px 24px;
            }
            .cta-card h2 {
                font-size: 28px;
            }
        }

        @media (max-width: 520px) {
            .nav-actions .btn-primary-custom {
                padding: 8px 14px;
                font-size: 13px;
            }
            .logo-text {
                font-size: 18px;
            }
            .logo-icon {
                width: 32px;
                height: 32px;
                font-size: 14px;
            }
            .page-hero h1 {
                font-size: 30px;
            }
            .hero-actions {
                flex-direction: column;
                width: 100%;
            }
            .hero-actions .btn-primary-custom,
            .hero-actions .btn-outline-neon {
                width: 100%;
                justify-content: center;
            }
            .section-header h2 {
                font-size: 24px;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 32px;
            }
            .stat-card .value {
                font-size: 30px;
            }
            .activity-item {
                padding: 20px;
            }
            .topic-card .topic-body {
                padding: 18px;
            }
            .rank-stats .stat .val {
                font-size: 14px;
            }
        }