/* roulang page: index */
:root {
            --primary: #3B82F6;
            --primary-dark: #2563EB;
            --primary-light: #93C5FD;
            --secondary: #8B5CF6;
            --secondary-dark: #7C3AED;
            --accent: #F59E0B;
            --bg: #F8FAFC;
            --bg-card: #FFFFFF;
            --bg-dark: #0F172A;
            --text: #1E293B;
            --text-light: #64748B;
            --text-white: #F8FAFC;
            --border: #E2E8F0;
            --radius: 12px;
            --radius-sm: 8px;
            --radius-lg: 16px;
            --shadow: 0 4px 16px rgba(0,0,0,0.06);
            --shadow-lg: 0 8px 32px rgba(0,0,0,0.10);
            --shadow-hover: 0 12px 40px rgba(0,0,0,0.14);
            --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            --font-sans: 'Inter', 'PingFang SC', 'Microsoft YaHei', 'Helvetica Neue', sans-serif;
        }
        *, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
        html { scroll-behavior: smooth; -webkit-font-smoothing: antialiased; }
        body { font-family: var(--font-sans); color: var(--text); background: var(--bg); line-height: 1.6; }
        img { max-width: 100%; height: auto; display: block; }
        a { color: inherit; text-decoration: none; transition: var(--transition); }
        button, input, select, textarea { font-family: inherit; font-size: inherit; outline: none; }
        .container { max-width: 1200px; margin: 0 auto; padding: 0 24px; }
        @media (max-width: 768px) { .container { padding: 0 16px; } }

        /* header / nav */
        .site-header { background: #fff; border-bottom: 1px solid var(--border); position: sticky; top: 0; z-index: 100; backdrop-filter: blur(12px); background: rgba(255,255,255,0.96); }
        .nav-wrap { display: flex; align-items: center; justify-content: space-between; height: 72px; }
        .logo { font-size: 1.5rem; font-weight: 800; color: var(--primary); letter-spacing: -0.02em; display: flex; align-items: center; gap: 10px; }
        .logo i { font-size: 1.8rem; color: var(--secondary); }
        .nav-links { display: flex; align-items: center; gap: 8px; list-style: none; }
        .nav-links li a { padding: 8px 18px; border-radius: var(--radius-sm); font-weight: 500; font-size: 0.95rem; color: var(--text); transition: var(--transition); position: relative; }
        .nav-links li a:hover { color: var(--primary); background: #EFF6FF; }
        .nav-links li a.active { color: #fff; background: var(--primary); box-shadow: 0 4px 12px rgba(59,130,246,0.30); }
        .nav-search { display: flex; align-items: center; background: var(--bg); border-radius: 999px; padding: 0 16px; border: 1px solid var(--border); transition: var(--transition); }
        .nav-search:focus-within { border-color: var(--primary); box-shadow: 0 0 0 3px rgba(59,130,246,0.15); }
        .nav-search input { border: none; background: transparent; padding: 8px 10px; font-size: 0.9rem; width: 160px; color: var(--text); }
        .nav-search input::placeholder { color: var(--text-light); }
        .nav-search button { background: none; border: none; color: var(--text-light); cursor: pointer; padding: 6px; font-size: 1rem; transition: var(--transition); }
        .nav-search button:hover { color: var(--primary); }
        .nav-cta { background: var(--primary); color: #fff; border: none; padding: 10px 28px; border-radius: 999px; font-weight: 600; font-size: 0.95rem; cursor: pointer; transition: var(--transition); box-shadow: 0 4px 12px rgba(59,130,246,0.25); }
        .nav-cta:hover { background: var(--primary-dark); transform: translateY(-1px); box-shadow: 0 8px 20px rgba(59,130,246,0.35); }
        .nav-cta:active { transform: scale(0.97); }
        .mobile-toggle { display: none; background: none; border: none; font-size: 1.6rem; color: var(--text); cursor: pointer; padding: 4px; }
        @media (max-width: 1024px) {
            .nav-links { gap: 4px; }
            .nav-links li a { padding: 6px 12px; font-size: 0.85rem; }
            .nav-search input { width: 120px; }
        }
        @media (max-width: 768px) {
            .mobile-toggle { display: block; }
            .nav-links { display: none; flex-direction: column; background: #fff; position: absolute; top: 72px; left: 0; right: 0; padding: 16px 24px; border-bottom: 1px solid var(--border); box-shadow: var(--shadow-lg); gap: 4px; }
            .nav-links.open { display: flex; }
            .nav-links li a { width: 100%; padding: 12px 16px; font-size: 1rem; }
            .nav-search { display: none; }
            .nav-cta { padding: 8px 18px; font-size: 0.85rem; }
        }

        /* hero */
        .hero { position: relative; min-height: 580px; display: flex; align-items: center; background: linear-gradient(135deg, #0F172A 0%, #1E3A5F 50%, #0F172A 100%); overflow: hidden; }
        .hero-bg { position: absolute; inset: 0; background: url('/assets/images/backpic/back-1.png') center/cover no-repeat; opacity: 0.25; mix-blend-mode: overlay; }
        .hero-overlay { position: absolute; inset: 0; background: linear-gradient(135deg, rgba(15,23,42,0.85) 0%, rgba(30,58,95,0.70) 100%); }
        .hero-content { position: relative; z-index: 2; width: 100%; padding: 80px 0; }
        .hero h1 { font-size: 3.2rem; font-weight: 800; color: #fff; line-height: 1.2; letter-spacing: -0.02em; margin-bottom: 20px; }
        .hero h1 span { background: linear-gradient(135deg, var(--primary-light), var(--secondary)); -webkit-background-clip: text; -webkit-text-fill-color: transparent; }
        .hero p { font-size: 1.2rem; color: rgba(255,255,255,0.75); max-width: 600px; margin-bottom: 36px; line-height: 1.7; }
        .hero-actions { display: flex; align-items: center; gap: 16px; flex-wrap: wrap; }
        .hero-btn-primary { background: var(--primary); color: #fff; padding: 16px 40px; border-radius: 999px; font-weight: 700; font-size: 1.1rem; border: none; cursor: pointer; transition: var(--transition); box-shadow: 0 8px 24px rgba(59,130,246,0.35); }
        .hero-btn-primary:hover { background: var(--primary-dark); transform: translateY(-2px); box-shadow: 0 12px 32px rgba(59,130,246,0.45); }
        .hero-btn-secondary { background: rgba(255,255,255,0.10); backdrop-filter: blur(8px); color: #fff; padding: 16px 36px; border-radius: 999px; font-weight: 600; font-size: 1.05rem; border: 1px solid rgba(255,255,255,0.20); cursor: pointer; transition: var(--transition); }
        .hero-btn-secondary:hover { background: rgba(255,255,255,0.18); border-color: rgba(255,255,255,0.35); transform: translateY(-2px); }
        .hero-stats { display: flex; gap: 40px; margin-top: 48px; flex-wrap: wrap; }
        .hero-stat-item { color: rgba(255,255,255,0.85); }
        .hero-stat-item .num { font-size: 2rem; font-weight: 800; color: #fff; display: block; }
        .hero-stat-item .label { font-size: 0.9rem; opacity: 0.7; }
        @media (max-width: 768px) {
            .hero { min-height: 460px; }
            .hero h1 { font-size: 2rem; }
            .hero p { font-size: 1rem; }
            .hero-actions { flex-direction: column; align-items: flex-start; }
            .hero-btn-primary, .hero-btn-secondary { width: 100%; text-align: center; }
            .hero-stats { gap: 24px; }
            .hero-stat-item .num { font-size: 1.5rem; }
        }

        /* section common */
        .section { padding: 80px 0; }
        .section-title { text-align: center; margin-bottom: 56px; }
        .section-title h2 { font-size: 2.2rem; font-weight: 800; color: var(--text); letter-spacing: -0.01em; margin-bottom: 12px; }
        .section-title p { font-size: 1.1rem; color: var(--text-light); max-width: 600px; margin: 0 auto; line-height: 1.7; }
        .section-title .badge { display: inline-block; background: #EFF6FF; color: var(--primary); padding: 4px 18px; border-radius: 999px; font-size: 0.85rem; font-weight: 600; margin-bottom: 12px; }
        @media (max-width: 768px) {
            .section { padding: 56px 0; }
            .section-title h2 { font-size: 1.6rem; }
            .section-title p { font-size: 0.95rem; }
        }

        /* cards grid */
        .card-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; }
        .card-grid.col-3 { grid-template-columns: repeat(3, 1fr); }
        .card-grid.col-2 { grid-template-columns: repeat(2, 1fr); }
        @media (max-width: 1024px) { .card-grid { grid-template-columns: repeat(2, 1fr); } }
        @media (max-width: 640px) { .card-grid { grid-template-columns: 1fr; } }

        .card { background: var(--bg-card); border-radius: var(--radius); border: 1px solid var(--border); overflow: hidden; transition: var(--transition); box-shadow: var(--shadow); }
        .card:hover { transform: translateY(-4px); box-shadow: var(--shadow-hover); border-color: var(--primary-light); }
        .card-img { width: 100%; height: 200px; object-fit: cover; }
        .card-body { padding: 24px; }
        .card-body h3 { font-size: 1.15rem; font-weight: 700; margin-bottom: 8px; }
        .card-body p { font-size: 0.92rem; color: var(--text-light); line-height: 1.6; }
        .card-body .tag { display: inline-block; background: #F1F5F9; color: var(--text-light); padding: 2px 12px; border-radius: 999px; font-size: 0.78rem; font-weight: 500; margin-top: 12px; }
        .card-body .meta { display: flex; align-items: center; gap: 16px; margin-top: 14px; font-size: 0.82rem; color: var(--text-light); }
        .card-body .meta i { width: 14px; }

        /* features */
        .features-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; }
        @media (max-width: 1024px) { .features-grid { grid-template-columns: repeat(2, 1fr); } }
        @media (max-width: 640px) { .features-grid { grid-template-columns: 1fr; } }
        .feature-card { background: var(--bg-card); border-radius: var(--radius); padding: 32px 24px; border: 1px solid var(--border); text-align: center; transition: var(--transition); box-shadow: var(--shadow); }
        .feature-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-hover); border-color: var(--primary-light); }
        .feature-card .icon { width: 60px; height: 60px; border-radius: 16px; display: flex; align-items: center; justify-content: center; margin: 0 auto 18px; font-size: 1.6rem; color: #fff; }
        .feature-card .icon.blue { background: linear-gradient(135deg, #3B82F6, #60A5FA); }
        .feature-card .icon.purple { background: linear-gradient(135deg, #8B5CF6, #A78BFA); }
        .feature-card .icon.amber { background: linear-gradient(135deg, #F59E0B, #FBBF24); }
        .feature-card .icon.green { background: linear-gradient(135deg, #10B981, #34D399); }
        .feature-card h3 { font-size: 1.1rem; font-weight: 700; margin-bottom: 10px; }
        .feature-card p { font-size: 0.9rem; color: var(--text-light); line-height: 1.6; }

        /* steps */
        .steps-grid { display: grid; grid-template-columns: repeat(5, 1fr); gap: 16px; }
        @media (max-width: 1024px) { .steps-grid { grid-template-columns: repeat(3, 1fr); } }
        @media (max-width: 640px) { .steps-grid { grid-template-columns: 1fr 1fr; } }
        .step-item { text-align: center; position: relative; padding: 24px 16px; background: var(--bg-card); border-radius: var(--radius); border: 1px solid var(--border); transition: var(--transition); }
        .step-item:hover { border-color: var(--primary-light); box-shadow: var(--shadow); }
        .step-num { width: 40px; height: 40px; border-radius: 50%; background: var(--primary); color: #fff; display: flex; align-items: center; justify-content: center; font-weight: 800; font-size: 1.1rem; margin: 0 auto 12px; }
        .step-item h4 { font-size: 0.95rem; font-weight: 600; margin-bottom: 6px; }
        .step-item p { font-size: 0.82rem; color: var(--text-light); }
        .step-arrow { display: none; }
        @media (min-width: 1025px) {
            .step-item:not(:last-child)::after { content: '→'; position: absolute; right: -14px; top: 50%; transform: translateY(-50%); font-size: 1.4rem; color: var(--primary-light); font-weight: 300; }
        }

        /* faq */
        .faq-list { max-width: 800px; margin: 0 auto; display: flex; flex-direction: column; gap: 12px; }
        .faq-item { background: var(--bg-card); border-radius: var(--radius-sm); border: 1px solid var(--border); overflow: hidden; transition: var(--transition); }
        .faq-item:hover { border-color: var(--primary-light); }
        .faq-question { display: flex; justify-content: space-between; align-items: center; padding: 20px 24px; cursor: pointer; font-weight: 600; font-size: 1rem; transition: var(--transition); background: none; border: none; width: 100%; text-align: left; color: var(--text); }
        .faq-question:hover { color: var(--primary); }
        .faq-question i { transition: transform 0.3s; color: var(--text-light); font-size: 0.9rem; }
        .faq-item.open .faq-question i { transform: rotate(180deg); color: var(--primary); }
        .faq-answer { padding: 0 24px 20px; font-size: 0.92rem; color: var(--text-light); line-height: 1.7; display: none; }
        .faq-item.open .faq-answer { display: block; }
        @media (max-width: 640px) {
            .faq-question { padding: 16px 18px; font-size: 0.9rem; }
            .faq-answer { padding: 0 18px 16px; font-size: 0.85rem; }
        }

        /* cta */
        .cta-section { background: linear-gradient(135deg, #0F172A 0%, #1E3A5F 100%); position: relative; overflow: hidden; }
        .cta-section::before { content: ''; position: absolute; inset: 0; background: url('/assets/images/backpic/back-2.png') center/cover no-repeat; opacity: 0.10; mix-blend-mode: overlay; }
        .cta-content { position: relative; z-index: 2; text-align: center; padding: 80px 0; }
        .cta-content h2 { font-size: 2.2rem; font-weight: 800; color: #fff; margin-bottom: 16px; }
        .cta-content p { font-size: 1.1rem; color: rgba(255,255,255,0.70); max-width: 600px; margin: 0 auto 32px; line-height: 1.7; }
        .cta-btn { background: var(--accent); color: #0F172A; padding: 18px 48px; border-radius: 999px; font-weight: 700; font-size: 1.1rem; border: none; cursor: pointer; transition: var(--transition); box-shadow: 0 8px 24px rgba(245,158,11,0.35); }
        .cta-btn:hover { background: #FBBF24; transform: translateY(-2px); box-shadow: 0 12px 32px rgba(245,158,11,0.45); }
        @media (max-width: 768px) {
            .cta-content h2 { font-size: 1.5rem; }
            .cta-content p { font-size: 0.95rem; }
            .cta-btn { width: 100%; text-align: center; }
        }

        /* footer */
        .site-footer { background: #0F172A; color: rgba(255,255,255,0.70); padding: 56px 0 32px; }
        .footer-grid { display: grid; grid-template-columns: 2fr 1fr 1fr 1fr; gap: 40px; margin-bottom: 40px; }
        @media (max-width: 1024px) { .footer-grid { grid-template-columns: 1fr 1fr; } }
        @media (max-width: 640px) { .footer-grid { grid-template-columns: 1fr; gap: 28px; } }
        .footer-brand .logo { color: #fff; font-size: 1.4rem; margin-bottom: 14px; }
        .footer-brand .logo i { color: var(--primary-light); }
        .footer-brand p { font-size: 0.9rem; line-height: 1.7; max-width: 300px; }
        .footer-col h4 { color: #fff; font-weight: 700; font-size: 1rem; margin-bottom: 16px; }
        .footer-col ul { list-style: none; display: flex; flex-direction: column; gap: 10px; }
        .footer-col ul li a { font-size: 0.9rem; color: rgba(255,255,255,0.60); transition: var(--transition); }
        .footer-col ul li a:hover { color: var(--primary-light); padding-left: 4px; }
        .footer-bottom { border-top: 1px solid rgba(255,255,255,0.08); padding-top: 24px; display: flex; justify-content: space-between; align-items: center; flex-wrap: wrap; gap: 12px; font-size: 0.85rem; color: rgba(255,255,255,0.45); }
        .footer-bottom a { color: rgba(255,255,255,0.55); }
        .footer-bottom a:hover { color: var(--primary-light); }
        @media (max-width: 640px) {
            .footer-bottom { flex-direction: column; text-align: center; }
        }

        /* news list (CMS) */
        .news-list { display: flex; flex-direction: column; gap: 16px; }
        .news-item { display: flex; gap: 20px; background: var(--bg-card); border-radius: var(--radius); border: 1px solid var(--border); padding: 20px; transition: var(--transition); align-items: flex-start; }
        .news-item:hover { border-color: var(--primary-light); box-shadow: var(--shadow); transform: translateY(-2px); }
        .news-item .thumb { width: 120px; height: 90px; border-radius: var(--radius-sm); object-fit: cover; flex-shrink: 0; }
        .news-item .info { flex: 1; min-width: 0; }
        .news-item .info h3 { font-size: 1.05rem; font-weight: 700; margin-bottom: 6px; line-height: 1.4; }
        .news-item .info h3 a { color: var(--text); }
        .news-item .info h3 a:hover { color: var(--primary); }
        .news-item .info p { font-size: 0.88rem; color: var(--text-light); line-height: 1.6; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
        .news-item .info .meta { display: flex; align-items: center; gap: 14px; margin-top: 10px; font-size: 0.8rem; color: var(--text-light); }
        .news-item .info .meta .cat { background: #EFF6FF; color: var(--primary); padding: 1px 10px; border-radius: 999px; font-weight: 500; font-size: 0.75rem; }
        @media (max-width: 640px) {
            .news-item { flex-direction: column; }
            .news-item .thumb { width: 100%; height: 180px; }
        }

        /* empty state */
        .empty-state { text-align: center; padding: 48px 24px; color: var(--text-light); }
        .empty-state i { font-size: 2.4rem; color: var(--border); margin-bottom: 16px; display: block; }
        .empty-state p { font-size: 1rem; }

        /* scrollbar */
        ::-webkit-scrollbar { width: 8px; }
        ::-webkit-scrollbar-track { background: var(--bg); }
        ::-webkit-scrollbar-thumb { background: var(--border); border-radius: 4px; }
        ::-webkit-scrollbar-thumb:hover { background: var(--text-light); }

/* roulang page: category1 */
:root {
            --primary: #4f46e5;
            --primary-dark: #3730a3;
            --primary-light: #818cf8;
            --secondary: #f59e0b;
            --secondary-light: #fbbf24;
            --accent: #10b981;
            --bg-body: #f8fafc;
            --bg-card: #ffffff;
            --text-main: #1e293b;
            --text-muted: #64748b;
            --text-light: #94a3b8;
            --border-color: #e2e8f0;
            --radius: 16px;
            --radius-sm: 10px;
            --radius-lg: 20px;
            --shadow-sm: 0 4px 12px rgba(0,0,0,0.06);
            --shadow-md: 0 12px 32px rgba(0,0,0,0.08);
            --shadow-lg: 0 24px 48px rgba(0,0,0,0.12);
            --transition: .3s cubic-bezier(.4,0,.2,1);
        }
        * { margin: 0; padding: 0; box-sizing: border-box; }
        body {
            font-family: 'Inter', system-ui, -apple-system, 'Segoe UI', Roboto, 'Helvetica Neue', sans-serif;
            background: var(--bg-body);
            color: var(--text-main);
            line-height: 1.6;
            -webkit-font-smoothing: antialiased;
        }
        img { max-width: 100%; height: auto; display: block; }
        a { text-decoration: none; color: inherit; transition: var(--transition); }
        button { cursor: pointer; border: none; background: none; font: inherit; }
        input { border: none; outline: none; font: inherit; }
        ul { list-style: none; }
        .container { max-width: 1200px; margin: 0 auto; padding: 0 20px; }

        /* 导航 */
        .site-header {
            background: #fff;
            border-bottom: 1px solid var(--border-color);
            position: sticky;
            top: 0;
            z-index: 100;
            box-shadow: 0 2px 20px rgba(0,0,0,0.04);
        }
        .nav-wrap {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 72px;
            gap: 20px;
        }
        .logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 1.35rem;
            font-weight: 700;
            color: var(--primary);
            white-space: nowrap;
        }
        .logo i { font-size: 1.6rem; color: var(--primary); }
        .nav-links { display: flex; gap: 8px; }
        .nav-links li a {
            padding: 10px 18px;
            border-radius: 100px;
            font-size: 0.95rem;
            font-weight: 500;
            color: var(--text-main);
            transition: var(--transition);
            position: relative;
        }
        .nav-links li a:hover { background: #eef2ff; color: var(--primary); }
        .nav-links li a.active {
            background: var(--primary);
            color: #fff;
            box-shadow: 0 4px 14px rgba(79,70,229,0.35);
        }
        .nav-search {
            display: flex;
            align-items: center;
            background: #f1f5f9;
            border-radius: 100px;
            padding: 0 16px;
            flex: 1;
            max-width: 280px;
            transition: var(--transition);
            border: 1px solid transparent;
        }
        .nav-search:focus-within {
            background: #fff;
            border-color: var(--primary-light);
            box-shadow: 0 0 0 4px rgba(79,70,229,0.1);
        }
        .nav-search input {
            background: transparent;
            padding: 10px 8px;
            font-size: 0.9rem;
            width: 100%;
            color: var(--text-main);
        }
        .nav-search button {
            padding: 8px 8px;
            color: var(--text-muted);
            font-size: 1rem;
            transition: var(--transition);
        }
        .nav-search button:hover { color: var(--primary); }
        .nav-cta {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: var(--primary);
            color: #fff;
            padding: 10px 24px;
            border-radius: 100px;
            font-weight: 600;
            font-size: 0.95rem;
            white-space: nowrap;
            transition: var(--transition);
            box-shadow: 0 4px 14px rgba(79,70,229,0.3);
        }
        .nav-cta:hover { background: var(--primary-dark); transform: translateY(-2px); box-shadow: 0 8px 24px rgba(79,70,229,0.4); }
        .mobile-toggle { display: none; font-size: 1.6rem; color: var(--text-main); padding: 8px; }

        /* 内页横幅 */
        .page-banner {
            position: relative;
            padding: 80px 0 64px;
            background: linear-gradient(135deg, #1e1b4b 0%, #312e81 40%, #3730a3 70%, #4f46e5 100%);
            overflow: hidden;
            min-height: 300px;
            display: flex;
            align-items: center;
        }
        .page-banner::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-1.png') center/cover no-repeat;
            opacity: 0.15;
            mix-blend-mode: overlay;
        }
        .page-banner::after {
            content: '';
            position: absolute;
            bottom: -2px;
            left: 0;
            right: 0;
            height: 120px;
            background: linear-gradient(to top, var(--bg-body), transparent);
        }
        .page-banner .container { position: relative; z-index: 2; }
        .page-banner h1 {
            font-size: 3rem;
            font-weight: 800;
            color: #fff;
            line-height: 1.2;
            margin-bottom: 16px;
            text-shadow: 0 4px 30px rgba(0,0,0,0.3);
        }
        .page-banner p {
            font-size: 1.2rem;
            color: rgba(255,255,255,0.85);
            max-width: 640px;
            line-height: 1.7;
        }
        .banner-tags { display: flex; gap: 10px; flex-wrap: wrap; margin-top: 24px; }
        .banner-tags span {
            background: rgba(255,255,255,0.15);
            backdrop-filter: blur(8px);
            padding: 6px 18px;
            border-radius: 100px;
            font-size: 0.85rem;
            color: rgba(255,255,255,0.9);
            border: 1px solid rgba(255,255,255,0.1);
        }

        /* 板块通用 */
        .section { padding: 64px 0; }
        .section-title {
            font-size: 2rem;
            font-weight: 700;
            color: var(--text-main);
            margin-bottom: 12px;
            letter-spacing: -0.01em;
        }
        .section-sub {
            font-size: 1.05rem;
            color: var(--text-muted);
            margin-bottom: 40px;
            max-width: 640px;
        }
        .text-center { text-align: center; }
        .text-center .section-sub { margin-left: auto; margin-right: auto; }

        /* 卡片网格 */
        .card-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }
        .card {
            background: var(--bg-card);
            border-radius: var(--radius);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            transition: var(--transition);
            border: 1px solid var(--border-color);
            display: flex;
            flex-direction: column;
        }
        .card:hover { transform: translateY(-6px); box-shadow: var(--shadow-md); border-color: var(--primary-light); }
        .card-img {
            width: 100%;
            height: 200px;
            object-fit: cover;
            background: #e2e8f0;
        }
        .card-body { padding: 20px 22px 24px; flex: 1; display: flex; flex-direction: column; }
        .card-tag {
            display: inline-block;
            background: #eef2ff;
            color: var(--primary);
            font-size: 0.75rem;
            font-weight: 600;
            padding: 4px 12px;
            border-radius: 100px;
            margin-bottom: 10px;
            align-self: flex-start;
        }
        .card h3 { font-size: 1.15rem; font-weight: 700; margin-bottom: 8px; line-height: 1.4; }
        .card h3 a { color: var(--text-main); }
        .card h3 a:hover { color: var(--primary); }
        .card p { color: var(--text-muted); font-size: 0.9rem; line-height: 1.6; flex: 1; }
        .card-meta {
            display: flex;
            justify-content: space-between;
            align-items: center;
            margin-top: 16px;
            padding-top: 14px;
            border-top: 1px solid var(--border-color);
            font-size: 0.8rem;
            color: var(--text-light);
        }
        .card-meta i { margin-right: 4px; }

        /* 游戏攻略分类标签 */
        .guide-tabs {
            display: flex;
            gap: 10px;
            flex-wrap: wrap;
            margin-bottom: 36px;
            justify-content: center;
        }
        .guide-tab {
            padding: 10px 24px;
            border-radius: 100px;
            background: #f1f5f9;
            color: var(--text-muted);
            font-weight: 500;
            font-size: 0.9rem;
            transition: var(--transition);
            border: 1px solid transparent;
            cursor: pointer;
        }
        .guide-tab:hover { background: #eef2ff; color: var(--primary); }
        .guide-tab.active { background: var(--primary); color: #fff; border-color: var(--primary); box-shadow: 0 4px 14px rgba(79,70,229,0.3); }

        /* 攻略流程/步骤 */
        .steps-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
            counter-reset: step;
        }
        .step-card {
            background: var(--bg-card);
            border-radius: var(--radius);
            padding: 28px 24px;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border-color);
            text-align: center;
            transition: var(--transition);
            position: relative;
        }
        .step-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-md); }
        .step-card::before {
            counter-increment: step;
            content: counter(step);
            position: absolute;
            top: -12px;
            left: 50%;
            transform: translateX(-50%);
            width: 36px;
            height: 36px;
            background: var(--primary);
            color: #fff;
            font-weight: 700;
            font-size: 1rem;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            box-shadow: 0 4px 12px rgba(79,70,229,0.3);
        }
        .step-card .step-icon { font-size: 2.2rem; color: var(--primary); margin-bottom: 12px; margin-top: 8px; }
        .step-card h4 { font-size: 1.05rem; font-weight: 700; margin-bottom: 8px; }
        .step-card p { font-size: 0.85rem; color: var(--text-muted); line-height: 1.6; }

        /* 热门榜单 */
        .rank-list { display: flex; flex-direction: column; gap: 12px; }
        .rank-item {
            display: flex;
            align-items: center;
            gap: 16px;
            background: var(--bg-card);
            padding: 16px 20px;
            border-radius: var(--radius-sm);
            border: 1px solid var(--border-color);
            transition: var(--transition);
        }
        .rank-item:hover { background: #f8faff; border-color: var(--primary-light); transform: translateX(6px); }
        .rank-num {
            width: 36px;
            height: 36px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 700;
            font-size: 1rem;
            background: #f1f5f9;
            color: var(--text-muted);
            flex-shrink: 0;
        }
        .rank-item:nth-child(1) .rank-num { background: var(--secondary); color: #fff; }
        .rank-item:nth-child(2) .rank-num { background: #94a3b8; color: #fff; }
        .rank-item:nth-child(3) .rank-num { background: #cbd5e1; color: #fff; }
        .rank-info { flex: 1; }
        .rank-info h4 { font-size: 1rem; font-weight: 600; margin-bottom: 2px; }
        .rank-info p { font-size: 0.8rem; color: var(--text-muted); }
        .rank-score { font-weight: 700; color: var(--secondary); font-size: 1.1rem; }

        /* 图文特色区块 */
        .feature-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 40px;
            align-items: center;
        }
        .feature-img {
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-md);
            width: 100%;
            height: 360px;
            object-fit: cover;
            background: #e2e8f0;
        }
        .feature-content h3 { font-size: 1.8rem; font-weight: 700; margin-bottom: 16px; }
        .feature-content p { color: var(--text-muted); font-size: 1rem; line-height: 1.8; margin-bottom: 20px; }
        .feature-list { display: flex; flex-direction: column; gap: 12px; }
        .feature-list li { display: flex; align-items: center; gap: 12px; font-size: 0.95rem; }
        .feature-list li i { color: var(--accent); font-size: 1.1rem; width: 22px; }

        /* FAQ */
        .faq-list { max-width: 800px; margin: 0 auto; display: flex; flex-direction: column; gap: 12px; }
        .faq-item {
            background: var(--bg-card);
            border-radius: var(--radius-sm);
            border: 1px solid var(--border-color);
            overflow: hidden;
            transition: var(--transition);
        }
        .faq-item:hover { border-color: var(--primary-light); }
        .faq-question {
            padding: 18px 24px;
            display: flex;
            justify-content: space-between;
            align-items: center;
            font-weight: 600;
            font-size: 1rem;
            cursor: pointer;
            transition: var(--transition);
        }
        .faq-question:hover { background: #f8faff; }
        .faq-question i { transition: var(--transition); color: var(--text-muted); }
        .faq-item.open .faq-question i { transform: rotate(180deg); color: var(--primary); }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: var(--transition);
            padding: 0 24px;
            color: var(--text-muted);
            font-size: 0.9rem;
            line-height: 1.7;
        }
        .faq-item.open .faq-answer { max-height: 200px; padding: 0 24px 20px; }

        /* CTA */
        .cta-section {
            background: linear-gradient(135deg, #1e1b4b 0%, #3730a3 50%, #4f46e5 100%);
            padding: 72px 0;
            text-align: center;
            position: relative;
            overflow: hidden;
        }
        .cta-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-2.png') center/cover no-repeat;
            opacity: 0.08;
            mix-blend-mode: overlay;
        }
        .cta-section .container { position: relative; z-index: 2; }
        .cta-section h2 { font-size: 2.4rem; font-weight: 800; color: #fff; margin-bottom: 16px; }
        .cta-section p { font-size: 1.1rem; color: rgba(255,255,255,0.8); max-width: 600px; margin: 0 auto 32px; }
        .cta-btns { display: flex; gap: 16px; justify-content: center; flex-wrap: wrap; }
        .cta-btn-primary {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            background: #fff;
            color: var(--primary);
            padding: 14px 36px;
            border-radius: 100px;
            font-weight: 700;
            font-size: 1.05rem;
            transition: var(--transition);
            box-shadow: 0 8px 24px rgba(0,0,0,0.2);
        }
        .cta-btn-primary:hover { transform: translateY(-3px); box-shadow: 0 12px 32px rgba(0,0,0,0.3); }
        .cta-btn-secondary {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            background: transparent;
            color: #fff;
            padding: 14px 36px;
            border-radius: 100px;
            font-weight: 600;
            font-size: 1.05rem;
            border: 2px solid rgba(255,255,255,0.3);
            transition: var(--transition);
        }
        .cta-btn-secondary:hover { background: rgba(255,255,255,0.1); border-color: rgba(255,255,255,0.6); }

        /* 页脚 */
        .site-footer {
            background: #0f172a;
            color: rgba(255,255,255,0.7);
            padding: 56px 0 0;
        }
        .footer-grid { display: grid; grid-template-columns: 2fr 1fr 1fr 1fr; gap: 40px; padding-bottom: 40px; border-bottom: 1px solid rgba(255,255,255,0.06); }
        .footer-brand .logo { color: #fff; font-size: 1.3rem; margin-bottom: 14px; display: inline-flex; }
        .footer-brand .logo i { color: var(--primary-light); }
        .footer-brand p { font-size: 0.9rem; line-height: 1.7; max-width: 340px; }
        .footer-col h4 { color: #fff; font-size: 1rem; font-weight: 600; margin-bottom: 18px; }
        .footer-col ul li { margin-bottom: 10px; }
        .footer-col ul li a { font-size: 0.9rem; color: rgba(255,255,255,0.6); transition: var(--transition); display: flex; align-items: center; gap: 8px; }
        .footer-col ul li a:hover { color: #fff; transform: translateX(4px); }
        .footer-bottom {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 24px 0;
            font-size: 0.85rem;
            color: rgba(255,255,255,0.4);
            flex-wrap: wrap;
            gap: 12px;
        }
        .footer-bottom a { color: rgba(255,255,255,0.5); }
        .footer-bottom a:hover { color: #fff; }

        /* 响应式 */
        @media (max-width: 1024px) {
            .card-grid { grid-template-columns: repeat(2, 1fr); }
            .steps-grid { grid-template-columns: repeat(2, 1fr); }
            .footer-grid { grid-template-columns: 1fr 1fr; }
            .page-banner h1 { font-size: 2.4rem; }
        }
        @media (max-width: 768px) {
            .nav-links, .nav-search, .nav-cta { display: none; }
            .mobile-toggle { display: block; }
            .nav-links.open {
                display: flex;
                flex-direction: column;
                position: absolute;
                top: 72px;
                left: 0;
                right: 0;
                background: #fff;
                padding: 20px 24px;
                box-shadow: 0 20px 40px rgba(0,0,0,0.1);
                border-bottom: 1px solid var(--border-color);
                gap: 6px;
                z-index: 99;
            }
            .nav-links.open li a { display: block; padding: 12px 18px; border-radius: var(--radius-sm); }
            .nav-wrap { height: 64px; }
            .page-banner { padding: 56px 0 48px; min-height: 240px; }
            .page-banner h1 { font-size: 1.8rem; }
            .page-banner p { font-size: 1rem; }
            .section { padding: 40px 0; }
            .section-title { font-size: 1.5rem; }
            .card-grid { grid-template-columns: 1fr; gap: 16px; }
            .feature-grid { grid-template-columns: 1fr; gap: 24px; }
            .feature-img { height: 220px; }
            .steps-grid { grid-template-columns: 1fr 1fr; gap: 16px; }
            .footer-grid { grid-template-columns: 1fr; gap: 28px; }
            .footer-bottom { flex-direction: column; text-align: center; }
            .guide-tabs { gap: 8px; }
            .guide-tab { padding: 8px 16px; font-size: 0.8rem; }
            .rank-item { padding: 12px 16px; }
            .cta-section h2 { font-size: 1.6rem; }
        }
        @media (max-width: 480px) {
            .steps-grid { grid-template-columns: 1fr; }
            .page-banner h1 { font-size: 1.5rem; }
            .cta-btn-primary, .cta-btn-secondary { padding: 12px 24px; font-size: 0.95rem; width: 100%; justify-content: center; }
        }

/* roulang page: article */
:root {
            --primary: #1a1a2e;
            --primary-light: #16213e;
            --accent: #e94560;
            --accent-light: #f0627a;
            --gold: #f5a623;
            --gold-light: #f8c15a;
            --bg-soft: #f8f9fa;
            --bg-dark: #1a1a2e;
            --text-body: #2d3436;
            --text-muted: #6c757d;
            --border-light: #e9ecef;
            --radius-lg: 0.75rem;
            --radius-xl: 1rem;
            --shadow-card: 0 4px 20px rgba(0,0,0,0.06);
            --shadow-hover: 0 12px 40px rgba(0,0,0,0.12);
            --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
        }
        *, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
        html { scroll-behavior: smooth; }
        body { font-family: 'Inter', 'Noto Sans SC', system-ui, sans-serif; color: var(--text-body); background: #ffffff; line-height: 1.7; }
        a { color: inherit; text-decoration: none; transition: var(--transition); }
        img { max-width: 100%; height: auto; display: block; border-radius: var(--radius-lg); }
        button { cursor: pointer; border: none; background: none; font-family: inherit; }
        input, textarea { font-family: inherit; outline: none; }
        .container { max-width: 1200px; margin: 0 auto; padding: 0 20px; }
        @media (max-width: 768px) { .container { padding: 0 16px; } }
        @media (max-width: 520px) { .container { padding: 0 12px; } }

        /* Header & Nav */
        .site-header {
            background: #ffffff;
            box-shadow: 0 2px 20px rgba(0,0,0,0.04);
            position: sticky;
            top: 0;
            z-index: 1000;
            border-bottom: 1px solid var(--border-light);
        }
        .nav-wrap {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 72px;
            gap: 24px;
        }
        .logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 1.35rem;
            font-weight: 700;
            color: var(--primary);
            white-space: nowrap;
        }
        .logo i { color: var(--accent); font-size: 1.5rem; }
        .logo:hover { color: var(--accent); }
        .nav-links { display: flex; align-items: center; gap: 6px; list-style: none; }
        .nav-links li a {
            display: block;
            padding: 8px 18px;
            border-radius: 40px;
            font-size: 0.95rem;
            font-weight: 500;
            color: var(--text-body);
            transition: var(--transition);
            position: relative;
        }
        .nav-links li a:hover { background: var(--bg-soft); color: var(--accent); }
        .nav-links li a.active {
            background: var(--primary);
            color: #fff;
        }
        .nav-links li a.active:hover { background: var(--primary-light); }
        .nav-search {
            display: flex;
            align-items: center;
            background: var(--bg-soft);
            border-radius: 40px;
            padding: 0 6px 0 18px;
            border: 1px solid transparent;
            transition: var(--transition);
            flex: 0 1 240px;
        }
        .nav-search:focus-within { border-color: var(--accent); background: #fff; box-shadow: 0 0 0 4px rgba(233,69,96,0.08); }
        .nav-search input { border: none; background: transparent; padding: 9px 0; font-size: 0.9rem; width: 100%; color: var(--text-body); }
        .nav-search input::placeholder { color: var(--text-muted); }
        .nav-search button { padding: 8px 12px; color: var(--text-muted); border-radius: 40px; transition: var(--transition); font-size: 0.95rem; }
        .nav-search button:hover { color: var(--accent); }
        .nav-cta {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 10px 24px;
            border-radius: 40px;
            background: linear-gradient(135deg, var(--accent), var(--accent-light));
            color: #fff;
            font-weight: 600;
            font-size: 0.95rem;
            box-shadow: 0 4px 16px rgba(233,69,96,0.3);
            transition: var(--transition);
            white-space: nowrap;
        }
        .nav-cta:hover { transform: translateY(-2px); box-shadow: 0 8px 28px rgba(233,69,96,0.4); color: #fff; }
        .mobile-toggle { display: none; font-size: 1.5rem; color: var(--primary); padding: 8px; border-radius: 8px; }
        .mobile-toggle:hover { background: var(--bg-soft); }
        @media (max-width: 1024px) {
            .nav-search { flex: 0 1 180px; }
            .nav-links li a { padding: 6px 14px; font-size: 0.9rem; }
        }
        @media (max-width: 768px) {
            .nav-wrap { height: 64px; gap: 12px; }
            .mobile-toggle { display: block; }
            .nav-links {
                display: none;
                position: absolute;
                top: 64px;
                left: 0;
                right: 0;
                background: #fff;
                flex-direction: column;
                padding: 16px 20px;
                box-shadow: 0 20px 40px rgba(0,0,0,0.08);
                border-top: 1px solid var(--border-light);
                gap: 4px;
            }
            .nav-links.open { display: flex; }
            .nav-links li a { padding: 12px 16px; border-radius: 12px; width: 100%; }
            .nav-search { flex: 1; max-width: 200px; }
            .nav-cta { padding: 8px 16px; font-size: 0.85rem; }
        }
        @media (max-width: 520px) {
            .nav-search { display: none; }
            .nav-cta { padding: 8px 14px; font-size: 0.8rem; gap: 4px; }
            .logo { font-size: 1.1rem; }
            .logo i { font-size: 1.2rem; }
        }

        /* Footer */
        .site-footer {
            background: var(--primary);
            color: rgba(255,255,255,0.85);
            padding: 60px 0 0;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1.2fr;
            gap: 40px;
            padding-bottom: 40px;
            border-bottom: 1px solid rgba(255,255,255,0.08);
        }
        .footer-brand .logo { color: #fff; font-size: 1.4rem; margin-bottom: 16px; }
        .footer-brand .logo i { color: var(--accent); }
        .footer-brand p { font-size: 0.92rem; line-height: 1.8; color: rgba(255,255,255,0.65); max-width: 360px; }
        .footer-col h4 { font-size: 1rem; font-weight: 600; color: #fff; margin-bottom: 18px; position: relative; padding-bottom: 10px; }
        .footer-col h4::after { content: ''; position: absolute; bottom: 0; left: 0; width: 28px; height: 3px; background: var(--accent); border-radius: 4px; }
        .footer-col ul { list-style: none; display: flex; flex-direction: column; gap: 10px; }
        .footer-col ul li a { color: rgba(255,255,255,0.65); font-size: 0.9rem; transition: var(--transition); display: flex; align-items: center; gap: 8px; }
        .footer-col ul li a:hover { color: var(--accent); transform: translateX(4px); }
        .footer-col ul li a i { font-size: 1rem; width: 20px; text-align: center; }
        .footer-bottom {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 24px 0;
            font-size: 0.85rem;
            color: rgba(255,255,255,0.5);
            flex-wrap: wrap;
            gap: 12px;
        }
        .footer-bottom a { color: rgba(255,255,255,0.6); }
        .footer-bottom a:hover { color: var(--accent); }
        @media (max-width: 1024px) { .footer-grid { grid-template-columns: 1fr 1fr; gap: 32px; } }
        @media (max-width: 768px) { .footer-grid { grid-template-columns: 1fr; gap: 28px; } .site-footer { padding: 40px 0 0; } .footer-bottom { flex-direction: column; text-align: center; } }

        /* Hero Banner */
        .article-banner {
            position: relative;
            min-height: 360px;
            display: flex;
            align-items: center;
            justify-content: center;
            background: url('/assets/images/backpic/back-1.png') center center / cover no-repeat;
            border-radius: 0 0 var(--radius-xl) var(--radius-xl);
            overflow: hidden;
        }
        .article-banner::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(26,26,46,0.85) 0%, rgba(22,33,62,0.7) 60%, rgba(233,69,96,0.3) 100%);
            z-index: 1;
        }
        .article-banner .banner-content {
            position: relative;
            z-index: 2;
            text-align: center;
            padding: 60px 20px;
            max-width: 800px;
        }
        .article-banner .banner-content h1 {
            font-size: 2.6rem;
            font-weight: 800;
            color: #fff;
            line-height: 1.25;
            margin-bottom: 20px;
            text-shadow: 0 4px 20px rgba(0,0,0,0.3);
        }
        .article-banner .banner-meta {
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 24px;
            flex-wrap: wrap;
            color: rgba(255,255,255,0.85);
            font-size: 0.95rem;
        }
        .article-banner .banner-meta span { display: flex; align-items: center; gap: 6px; }
        .article-banner .banner-meta i { color: var(--gold); }
        .article-banner .banner-meta .category-tag {
            display: inline-block;
            padding: 4px 16px;
            background: rgba(233,69,96,0.25);
            border: 1px solid rgba(233,69,96,0.4);
            border-radius: 40px;
            font-size: 0.85rem;
            color: #fff;
            backdrop-filter: blur(4px);
        }
        @media (max-width: 768px) {
            .article-banner { min-height: 280px; }
            .article-banner .banner-content h1 { font-size: 1.8rem; }
            .article-banner .banner-meta { gap: 14px; font-size: 0.85rem; }
        }
        @media (max-width: 520px) {
            .article-banner { min-height: 220px; border-radius: 0 0 var(--radius-lg) var(--radius-lg); }
            .article-banner .banner-content { padding: 40px 16px; }
            .article-banner .banner-content h1 { font-size: 1.4rem; }
        }

        /* Breadcrumb */
        .breadcrumb {
            padding: 18px 0;
            font-size: 0.9rem;
            color: var(--text-muted);
            display: flex;
            align-items: center;
            gap: 8px;
            flex-wrap: wrap;
        }
        .breadcrumb a { color: var(--text-muted); }
        .breadcrumb a:hover { color: var(--accent); }
        .breadcrumb span { color: var(--text-body); font-weight: 500; }
        .breadcrumb .sep { color: var(--text-muted); font-size: 0.75rem; }

        /* Article Content */
        .article-main {
            padding: 40px 0 60px;
        }
        .article-body {
            background: #fff;
            border-radius: var(--radius-xl);
            padding: 48px 56px;
            box-shadow: var(--shadow-card);
            border: 1px solid var(--border-light);
        }
        .article-body .article-content {
            font-size: 1.05rem;
            line-height: 1.9;
            color: var(--text-body);
        }
        .article-body .article-content p { margin-bottom: 1.4em; }
        .article-body .article-content h2 { font-size: 1.6rem; font-weight: 700; margin: 2em 0 0.8em; color: var(--primary); }
        .article-body .article-content h3 { font-size: 1.3rem; font-weight: 600; margin: 1.6em 0 0.6em; color: var(--primary); }
        .article-body .article-content ul, .article-body .article-content ol { margin: 1em 0; padding-left: 1.6em; }
        .article-body .article-content li { margin-bottom: 0.5em; }
        .article-body .article-content img { border-radius: var(--radius-lg); margin: 1.6em auto; box-shadow: var(--shadow-card); }
        .article-body .article-content blockquote {
            border-left: 4px solid var(--accent);
            padding: 16px 20px;
            background: var(--bg-soft);
            border-radius: 0 var(--radius-lg) var(--radius-lg) 0;
            margin: 1.6em 0;
            color: var(--text-muted);
            font-style: italic;
        }
        .article-body .article-content a { color: var(--accent); text-decoration: underline; }
        .article-body .article-content a:hover { color: var(--accent-dark); }
        .article-body .article-content code {
            background: var(--bg-soft);
            padding: 2px 10px;
            border-radius: 6px;
            font-size: 0.9em;
            color: var(--accent);
            border: 1px solid var(--border-light);
        }
        .article-body .article-content pre code { background: transparent; border: none; padding: 0; }
        .article-body .article-content table { width: 100%; border-collapse: collapse; margin: 1.6em 0; }
        .article-body .article-content th, .article-body .article-content td { padding: 12px 16px; border: 1px solid var(--border-light); text-align: left; }
        .article-body .article-content th { background: var(--bg-soft); font-weight: 600; }
        .article-tags {
            display: flex;
            align-items: center;
            gap: 12px;
            padding-top: 32px;
            margin-top: 32px;
            border-top: 1px solid var(--border-light);
            flex-wrap: wrap;
        }
        .article-tags .label { font-size: 0.9rem; color: var(--text-muted); font-weight: 500; }
        .article-tags .tag {
            display: inline-block;
            padding: 4px 16px;
            background: var(--bg-soft);
            border-radius: 40px;
            font-size: 0.85rem;
            color: var(--text-muted);
            border: 1px solid var(--border-light);
            transition: var(--transition);
        }
        .article-tags .tag:hover { background: var(--accent); color: #fff; border-color: var(--accent); }
        @media (max-width: 768px) {
            .article-body { padding: 28px 24px; }
            .article-body .article-content { font-size: 1rem; }
            .article-body .article-content h2 { font-size: 1.3rem; }
            .article-body .article-content h3 { font-size: 1.15rem; }
        }
        @media (max-width: 520px) {
            .article-body { padding: 20px 16px; border-radius: var(--radius-lg); }
            .article-body .article-content { font-size: 0.95rem; }
        }

        /* Related Articles */
        .related-section {
            padding: 60px 0;
            background: var(--bg-soft);
        }
        .related-section .section-title {
            font-size: 1.6rem;
            font-weight: 700;
            color: var(--primary);
            margin-bottom: 32px;
            text-align: center;
        }
        .related-section .section-title span { color: var(--accent); }
        .related-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }
        .related-card {
            background: #fff;
            border-radius: var(--radius-xl);
            overflow: hidden;
            box-shadow: var(--shadow-card);
            transition: var(--transition);
            border: 1px solid var(--border-light);
        }
        .related-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-hover); }
        .related-card .card-img {
            width: 100%;
            height: 200px;
            object-fit: cover;
            border-radius: 0;
        }
        .related-card .card-body { padding: 20px 22px; }
        .related-card .card-body .card-cat {
            display: inline-block;
            padding: 2px 12px;
            background: rgba(233,69,96,0.1);
            color: var(--accent);
            border-radius: 40px;
            font-size: 0.8rem;
            font-weight: 500;
            margin-bottom: 10px;
        }
        .related-card .card-body h3 { font-size: 1.05rem; font-weight: 600; line-height: 1.4; margin-bottom: 8px; color: var(--primary); }
        .related-card .card-body h3 a:hover { color: var(--accent); }
        .related-card .card-body p { font-size: 0.9rem; color: var(--text-muted); line-height: 1.6; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
        .related-card .card-body .card-meta { display: flex; align-items: center; justify-content: space-between; margin-top: 14px; font-size: 0.82rem; color: var(--text-muted); }
        .related-card .card-body .card-meta i { margin-right: 4px; }
        @media (max-width: 1024px) { .related-grid { grid-template-columns: repeat(2, 1fr); } }
        @media (max-width: 640px) { .related-grid { grid-template-columns: 1fr; } .related-section { padding: 40px 0; } }

        /* Not Found */
        .not-found-box {
            text-align: center;
            padding: 80px 20px;
        }
        .not-found-box i { font-size: 4rem; color: var(--text-muted); margin-bottom: 20px; display: block; }
        .not-found-box h2 { font-size: 1.6rem; font-weight: 700; color: var(--primary); margin-bottom: 12px; }
        .not-found-box p { color: var(--text-muted); font-size: 1rem; margin-bottom: 24px; }
        .not-found-box .btn-home {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 12px 32px;
            background: var(--accent);
            color: #fff;
            border-radius: 40px;
            font-weight: 600;
            box-shadow: 0 4px 16px rgba(233,69,96,0.3);
            transition: var(--transition);
        }
        .not-found-box .btn-home:hover { transform: translateY(-2px); box-shadow: 0 8px 28px rgba(233,69,96,0.4); }

        /* Transition helpers */
        .fade-up { opacity: 0; transform: translateY(20px); transition: opacity 0.6s ease, transform 0.6s ease; }
        .fade-up.visible { opacity: 1; transform: translateY(0); }

/* roulang page: category2 */
:root {
            --primary: #2563eb;
            --primary-dark: #1d4ed8;
            --accent: #f0523f;
            --bg-surface: #f8fafc;
            --card-bg: #ffffff;
            --text-dark: #0f172a;
            --text-muted: #64748b;
            --border-light: #e2e8f0;
            --shadow-card: 0 4px 24px rgba(0,0,0,0.06);
            --shadow-hover: 0 12px 40px rgba(0,0,0,0.10);
            --radius-xl: 0.75rem;
            --radius-2xl: 1rem;
        }
        * { margin: 0; padding: 0; box-sizing: border-box; }
        html { scroll-behavior: smooth; }
        body { font-family: 'Inter', 'Noto Sans SC', system-ui, -apple-system, sans-serif; background: var(--bg-surface); color: var(--text-dark); line-height: 1.6; -webkit-font-smoothing: antialiased; }
        .container { max-width: 1200px; margin: 0 auto; padding: 0 20px; }
        a { text-decoration: none; color: inherit; transition: color 0.2s; }
        img { max-width: 100%; height: auto; display: block; }
        button { cursor: pointer; font-family: inherit; }
        input, button { outline: none; }

        /* Header & Nav */
        .site-header { background: #ffffff; border-bottom: 1px solid var(--border-light); box-shadow: var(--shadow-card); position: sticky; top: 0; z-index: 1000; }
        .nav-wrap { display: flex; align-items: center; justify-content: space-between; height: 68px; gap: 16px; }
        .logo { display: flex; align-items: center; gap: 8px; font-size: 1.2rem; font-weight: 700; color: var(--primary); white-space: nowrap; }
        .logo i { font-size: 1.4rem; }
        .nav-links { display: flex; list-style: none; gap: 4px; margin: 0 12px; }
        .nav-links li a { display: block; padding: 8px 16px; border-radius: 8px; font-size: 0.9rem; font-weight: 500; color: var(--text-muted); transition: all 0.2s; }
        .nav-links li a:hover { color: var(--primary); background: var(--primary-50, #f0f5ff); }
        .nav-links li a.active { color: #ffffff; background: var(--primary); }
        .nav-search { display: flex; align-items: center; background: var(--bg-surface); border: 1px solid var(--border-light); border-radius: 24px; padding: 2px 2px 2px 16px; transition: border-color 0.2s, box-shadow 0.2s; flex: 1; max-width: 260px; }
        .nav-search:focus-within { border-color: var(--primary); box-shadow: 0 0 0 3px rgba(37,99,235,0.12); }
        .nav-search input { border: none; background: transparent; padding: 8px 0; font-size: 0.875rem; width: 100%; color: var(--text-dark); }
        .nav-search input::placeholder { color: #94a3b8; }
        .nav-search button { background: transparent; border: none; padding: 8px 14px; border-radius: 50%; color: var(--text-muted); transition: color 0.2s; }
        .nav-search button:hover { color: var(--primary); }
        .nav-cta { display: inline-flex; align-items: center; gap: 6px; background: var(--primary); color: #fff !important; padding: 8px 20px; border-radius: 24px; font-size: 0.875rem; font-weight: 600; transition: background 0.2s, transform 0.15s; white-space: nowrap; }
        .nav-cta:hover { background: var(--primary-dark); transform: translateY(-1px); box-shadow: 0 4px 14px rgba(37,99,235,0.3); }

        .mobile-toggle { display: none; background: none; border: none; font-size: 1.5rem; color: var(--text-dark); padding: 4px; }

        /* Footer */
        .site-footer { background: #0f172a; color: #cbd5e1; padding: 60px 0 0; }
        .footer-grid { display: grid; grid-template-columns: 1.5fr 1fr 1fr 1fr; gap: 40px; margin-bottom: 40px; }
        .footer-brand .logo { color: #ffffff; font-size: 1.25rem; margin-bottom: 12px; }
        .footer-brand p { font-size: 0.875rem; line-height: 1.7; color: #94a3b8; max-width: 320px; }
        .footer-col h4 { color: #ffffff; font-size: 0.95rem; font-weight: 600; margin-bottom: 16px; }
        .footer-col ul { list-style: none; padding: 0; }
        .footer-col ul li { margin-bottom: 10px; }
        .footer-col ul li a { color: #94a3b8; font-size: 0.85rem; transition: color 0.2s; display: flex; align-items: center; gap: 8px; }
        .footer-col ul li a:hover { color: #ffffff; }
        .footer-bottom { border-top: 1px solid rgba(255,255,255,0.06); padding: 24px 0; display: flex; justify-content: space-between; align-items: center; flex-wrap: wrap; gap: 12px; font-size: 0.8rem; color: #64748b; }
        .footer-bottom a { color: #94a3b8; }
        .footer-bottom a:hover { color: #ffffff; }

        /* Page Banner */
        .page-banner { position: relative; background: linear-gradient(135deg, #1e3a8a 0%, #1d4ed8 50%, #2563eb 100%); padding: 80px 0 70px; text-align: center; overflow: hidden; }
        .page-banner::before { content: ''; position: absolute; inset: 0; background: url('/assets/images/backpic/back-2.png') center/cover no-repeat; opacity: 0.15; }
        .page-banner h1 { position: relative; z-index: 1; font-size: 2.6rem; font-weight: 800; color: #ffffff; margin-bottom: 16px; letter-spacing: -0.01em; }
        .page-banner p { position: relative; z-index: 1; font-size: 1.1rem; color: rgba(255,255,255,0.85); max-width: 640px; margin: 0 auto; line-height: 1.7; }

        /* Section */
        .section { padding: 72px 0; }
        .section-title { text-align: center; margin-bottom: 48px; }
        .section-title h2 { font-size: 2rem; font-weight: 700; color: var(--text-dark); letter-spacing: -0.01em; }
        .section-title p { font-size: 1rem; color: var(--text-muted); max-width: 560px; margin: 12px auto 0; line-height: 1.7; }

        /* Cards */
        .card { background: var(--card-bg); border-radius: var(--radius-2xl); box-shadow: var(--shadow-card); overflow: hidden; transition: transform 0.25s, box-shadow 0.25s; }
        .card:hover { transform: translateY(-4px); box-shadow: var(--shadow-hover); }
        .card-img { width: 100%; aspect-ratio: 16/9; object-fit: cover; }
        .card-body { padding: 24px; }
        .card-body h3 { font-size: 1.1rem; font-weight: 600; margin-bottom: 8px; color: var(--text-dark); }
        .card-body p { font-size: 0.875rem; color: var(--text-muted); line-height: 1.6; }

        /* Feature Grid */
        .feature-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 28px; }
        .feature-card { text-align: center; padding: 36px 24px; background: var(--card-bg); border-radius: var(--radius-2xl); box-shadow: var(--shadow-card); transition: transform 0.25s, box-shadow 0.25s; }
        .feature-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-hover); }
        .feature-icon { width: 64px; height: 64px; border-radius: 18px; display: flex; align-items: center; justify-content: center; margin: 0 auto 18px; font-size: 1.6rem; color: #fff; }
        .feature-card h3 { font-size: 1.1rem; font-weight: 600; margin-bottom: 10px; }
        .feature-card p { font-size: 0.875rem; color: var(--text-muted); line-height: 1.6; }

        /* List */
        .list-card { display: flex; gap: 24px; background: var(--card-bg); border-radius: var(--radius-2xl); box-shadow: var(--shadow-card); padding: 28px; transition: transform 0.25s, box-shadow 0.25s; align-items: flex-start; }
        .list-card:hover { transform: translateY(-2px); box-shadow: var(--shadow-hover); }
        .list-num { font-size: 2rem; font-weight: 800; color: var(--primary); line-height: 1; min-width: 48px; opacity: 0.3; }
        .list-content h3 { font-size: 1.05rem; font-weight: 600; margin-bottom: 6px; }
        .list-content p { font-size: 0.875rem; color: var(--text-muted); line-height: 1.6; }

        /* Badge */
        .badge { display: inline-block; padding: 4px 14px; border-radius: 20px; font-size: 0.75rem; font-weight: 600; background: var(--primary-50, #f0f5ff); color: var(--primary); }
        .badge-accent { background: #fef3f2; color: var(--accent); }
        .badge-green { background: #ecfdf5; color: #059669; }

        /* FAQ */
        .faq-item { background: var(--card-bg); border-radius: var(--radius-xl); box-shadow: var(--shadow-card); padding: 24px 28px; margin-bottom: 16px; transition: box-shadow 0.2s; }
        .faq-item:hover { box-shadow: var(--shadow-hover); }
        .faq-q { display: flex; justify-content: space-between; align-items: center; font-weight: 600; font-size: 1rem; cursor: pointer; color: var(--text-dark); }
        .faq-q i { color: var(--primary); transition: transform 0.3s; }
        .faq-a { margin-top: 14px; font-size: 0.9rem; color: var(--text-muted); line-height: 1.7; border-top: 1px solid var(--border-light); padding-top: 14px; }

        /* CTA */
        .cta-section { background: linear-gradient(135deg, #1e3a8a 0%, #2563eb 100%); padding: 64px 0; text-align: center; position: relative; overflow: hidden; }
        .cta-section::before { content: ''; position: absolute; inset: 0; background: url('/assets/images/backpic/back-3.png') center/cover no-repeat; opacity: 0.08; }
        .cta-section h2 { font-size: 2rem; font-weight: 700; color: #fff; position: relative; z-index: 1; }
        .cta-section p { color: rgba(255,255,255,0.8); font-size: 1.05rem; margin: 12px auto 32px; max-width: 520px; position: relative; z-index: 1; }
        .cta-btn-group { display: flex; gap: 16px; justify-content: center; flex-wrap: wrap; position: relative; z-index: 1; }
        .cta-btn { display: inline-flex; align-items: center; gap: 8px; padding: 14px 36px; border-radius: 30px; font-weight: 600; font-size: 1rem; transition: all 0.2s; }
        .cta-btn-primary { background: #ffffff; color: var(--primary); }
        .cta-btn-primary:hover { background: #f0f5ff; transform: translateY(-2px); box-shadow: 0 8px 24px rgba(0,0,0,0.2); }
        .cta-btn-outline { border: 2px solid rgba(255,255,255,0.5); color: #fff; background: transparent; }
        .cta-btn-outline:hover { border-color: #fff; background: rgba(255,255,255,0.08); transform: translateY(-2px); }

        /* Grid layouts */
        .grid-2 { display: grid; grid-template-columns: 1fr 1fr; gap: 28px; }
        .grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 28px; }
        .grid-4 { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; }

        /* Security level bar */
        .level-bar { display: flex; align-items: center; gap: 12px; margin-top: 12px; }
        .level-track { flex: 1; height: 8px; background: #e2e8f0; border-radius: 4px; overflow: hidden; }
        .level-fill { height: 100%; border-radius: 4px; background: linear-gradient(90deg, #f0523f, #f59e0b, #10b981); }
        .level-label { font-size: 0.8rem; font-weight: 600; color: var(--text-muted); white-space: nowrap; }

        /* Responsive */
        @media (max-width: 1024px) {
            .footer-grid { grid-template-columns: 1fr 1fr; gap: 32px; }
            .grid-4 { grid-template-columns: repeat(2, 1fr); }
        }
        @media (max-width: 768px) {
            .nav-links { display: none; position: absolute; top: 68px; left: 0; right: 0; background: #fff; flex-direction: column; padding: 16px; border-bottom: 1px solid var(--border-light); box-shadow: 0 12px 24px rgba(0,0,0,0.06); gap: 4px; }
            .nav-links.open { display: flex; }
            .nav-links li a { padding: 12px 16px; }
            .nav-search { max-width: 180px; }
            .mobile-toggle { display: block; }
            .page-banner h1 { font-size: 1.8rem; }
            .page-banner { padding: 56px 0 48px; }
            .section { padding: 48px 0; }
            .section-title h2 { font-size: 1.6rem; }
            .feature-grid { grid-template-columns: 1fr; gap: 20px; }
            .grid-2, .grid-3, .grid-4 { grid-template-columns: 1fr; }
            .list-card { flex-direction: column; gap: 12px; }
            .list-num { min-width: auto; }
            .footer-grid { grid-template-columns: 1fr; gap: 24px; }
            .footer-bottom { flex-direction: column; text-align: center; }
            .cta-section h2 { font-size: 1.5rem; }
            .nav-cta .nav-cta-text { display: none; }
        }
        @media (max-width: 520px) {
            .container { padding: 0 16px; }
            .nav-wrap { gap: 8px; }
            .nav-search { max-width: 120px; }
            .nav-search input { font-size: 0.8rem; }
            .page-banner h1 { font-size: 1.4rem; }
            .page-banner p { font-size: 0.95rem; }
            .logo { font-size: 1rem; }
            .feature-card { padding: 24px 16px; }
            .card-body { padding: 18px; }
            .faq-item { padding: 18px 20px; }
            .cta-btn { padding: 12px 24px; font-size: 0.9rem; }
            .nav-cta { padding: 6px 14px; font-size: 0.8rem; }
        }