/* roulang page: index */
:root {
            --primary: #0a1628;
            --primary-light: #11223b;
            --accent: #ff5b35;
            --accent-soft: #ff7a55;
            --bg-body: #f1f4f9;
            --bg-dark: #0a1628;
            --text-main: #16202e;
            --text-muted: #5c6b7d;
            --border: #e3e8f0;
            --card-shadow: 0 12px 32px rgba(10, 22, 40, 0.08);
            --hover-shadow: 0 18px 40px rgba(10, 22, 40, 0.14);
            --radius: 16px;
            --radius-sm: 10px;
        }
        * { box-sizing: border-box; margin: 0; padding: 0; }
        html { scroll-behavior: smooth; }
        body {
            font-family: "Inter", "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
            background: var(--bg-body);
            color: var(--text-main);
            line-height: 1.6;
        }
        .container { max-width: 1240px; margin: 0 auto; padding: 0 24px; }
        a { text-decoration: none; color: inherit; transition: .2s; }
        img { max-width: 100%; display: block; }
        button, input { font-family: inherit; }

        /* 导航 */
        .site-header {
            background: rgba(255,255,255,0.92);
            backdrop-filter: blur(14px);
            border-bottom: 1px solid var(--border);
            position: sticky; top: 0; z-index: 100;
        }
        .nav-wrap { display: flex; align-items: center; justify-content: space-between; height: 72px; gap: 20px; }
        .logo {
            display: flex; align-items: center; gap: 10px; font-weight: 800; font-size: 20px;
            color: var(--primary); letter-spacing: 0.5px;
        }
        .logo .logo-mark {
            width: 40px; height: 40px; border-radius: 10px;
            background: linear-gradient(135deg, var(--primary), #1d3a5c);
            display: flex; align-items: center; justify-content: center;
            color: #fff; font-size: 18px;
        }
        .nav-menu { display: flex; align-items: center; gap: 6px; }
        .nav-link {
            padding: 8px 18px; border-radius: 8px; font-weight: 600; font-size: 15px;
            color: var(--text-main); position: relative;
        }
        .nav-link:hover { background: #eef2f7; color: var(--accent); }
        .nav-link.active { background: var(--primary); color: #fff; }
        .mega-panel {
            position: absolute; top: 100%; left: 50%; transform: translateX(-50%);
            background: #fff; border-radius: var(--radius);
            box-shadow: var(--hover-shadow); border: 1px solid var(--border);
            padding: 20px; width: 240px; margin-top: 8px;
            display: none; z-index: 200;
        }
        .nav-item { position: relative; }
        .nav-item:hover .mega-panel { display: block; }
        .mega-panel a {
            display: flex; padding: 10px 14px; border-radius: 8px; font-size: 14px;
            font-weight: 500; color: var(--text-main); gap: 8px; align-items: center;
        }
        .mega-panel a:hover { background: #f5f7fb; color: var(--accent); }
        .mega-panel .panel-title { font-weight: 700; font-size: 13px; color: var(--text-muted); padding: 4px 10px; }
        .nav-cta {
            display: inline-flex; align-items: center; gap: 8px;
            background: var(--accent); color: #fff; padding: 10px 22px;
            border-radius: 10px; font-weight: 700; font-size: 14px;
            box-shadow: 0 6px 20px rgba(255, 91, 53, 0.3);
        }
        .nav-cta:hover { background: #e84f2c; transform: translateY(-1px); box-shadow: 0 10px 24px rgba(255, 91, 53, 0.4); }
        .mobile-toggle { display: none; background: none; border: 1px solid var(--border); padding: 8px 12px; border-radius: 8px; font-size: 18px; }

        /* Hero */
        .hero {
            background: linear-gradient(180deg, #0a1628 0%, #0d1f36 100%);
            color: #fff; position: relative; overflow: hidden;
            padding: 0;
        }
        .hero-bg {
            position: absolute; inset: 0;
            background-size: cover; background-position: center;
            opacity: 0.5;
        }
        .hero-overlay {
            position: absolute; inset: 0;
            background: linear-gradient(90deg, rgba(10,22,40,0.92) 0%, rgba(10,22,40,0.55) 100%);
        }
        .hero-content { position: relative; z-index: 2; padding: 100px 24px 90px; display: flex; align-items: center; }
        .hero-inner { max-width: 1240px; margin: 0 auto; width: 100%; display: grid; grid-template-columns: 1.2fr 1fr; align-items: center; gap: 50px; }
        .hero-badge {
            display: inline-flex; align-items: center; gap: 8px;
            background: rgba(255,91,53,0.16); color: #ff9a7a;
            border: 1px solid rgba(255,91,53,0.4);
            padding: 6px 16px; border-radius: 50px; font-size: 13px; font-weight: 700;
        }
        .hero-badge .dot { width: 8px; height: 8px; border-radius: 50%; background: var(--accent); animation: pulse 1.6s infinite; }
        @keyframes pulse { 0%,100% { opacity: 1; transform: scale(1); } 50% { opacity: 0.5; transform: scale(0.7); } }
        .hero h1 {
            font-size: 44px; line-height: 1.2; font-weight: 900;
            margin-top: 22px; letter-spacing: 1px;
        }
        .hero h1 span { color: var(--accent); }
        .hero-desc { font-size: 17px; color: #a3b3c9; margin-top: 18px; max-width: 540px; line-height: 1.7; }
        .hero-actions { display: flex; flex-wrap: wrap; gap: 14px; margin-top: 32px; }
        .btn-primary {
            display: inline-flex; align-items: center; gap: 10px;
            background: var(--accent); color: #fff; padding: 14px 30px;
            border-radius: 12px; font-weight: 700; font-size: 15px;
            box-shadow: 0 10px 30px rgba(255,91,53,0.35);
            transition: all .25s;
        }
        .btn-primary:hover { background: #e84f2c; transform: translateY(-2px); box-shadow: 0 16px 36px rgba(255,91,53,0.45); }
        .btn-ghost {
            display: inline-flex; align-items: center; gap: 10px;
            border: 1.5px solid rgba(255,255,255,0.35); color: #fff;
            padding: 14px 30px; border-radius: 12px; font-weight: 600; font-size: 15px;
            transition: all .25s;
        }
        .btn-ghost:hover { border-color: var(--accent); color: var(--accent); background: rgba(255,91,53,0.08); }
        .hero-stats { display: flex; gap: 32px; margin-top: 50px; flex-wrap: wrap; }
        .hero-stat { border-left: 2px solid rgba(255,255,255,0.2); padding-left: 16px; }
        .hero-stat strong { display: block; font-size: 26px; font-weight: 900; }
        .hero-stat span { font-size: 13px; color: #7d8fa6; }
        .hero-card {
            background: rgba(255,255,255,0.07); border: 1px solid rgba(255,255,255,0.12);
            border-radius: 20px; padding: 32px; backdrop-filter: blur(12px);
        }
        .hero-card-icon { color: var(--accent); font-size: 32px; }
        .hero-card h3 { font-size: 20px; margin: 12px 0 8px; font-weight: 800; }
        .hero-card p { color: #a3b3c9; font-size: 14px; }
        .hero-card-list { margin-top: 20px; display: flex; flex-direction: column; gap: 12px; }
        .hero-card-list li { display: flex; gap: 10px; align-items: center; color: #c4d0de; font-size: 14px; }
        .hero-card-list i { color: var(--accent); }

        /* 通用板块 */
        .section { padding: 80px 0; }
        .section-light { background: #fff; }
        .section-dark { background: var(--bg-dark); color: #fff; }
        .section-title { text-align: center; max-width: 720px; margin: 0 auto 50px; }
        .section-title .tag {
            display: inline-block; background: rgba(255,91,53,0.1); color: var(--accent);
            font-size: 13px; font-weight: 700; padding: 5px 14px; border-radius: 50px;
            text-transform: uppercase; letter-spacing: 1px;
        }
        .section-title h2 { font-size: 34px; font-weight: 900; margin-top: 14px; line-height: 1.3; }
        .section-title p { color: var(--text-muted); margin-top: 12px; font-size: 15px; }

        /* 卡片网格 */
        .card-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
        .card {
            background: #fff; border-radius: var(--radius); border: 1px solid var(--border);
            padding: 28px; box-shadow: var(--card-shadow); transition: all .3s;
        }
        .card:hover { transform: translateY(-4px); box-shadow: var(--hover-shadow); }
        .card-icon {
            width: 54px; height: 54px; border-radius: 14px;
            background: linear-gradient(135deg, var(--primary), #1d3a5c);
            display: flex; align-items: center; justify-content: center;
            color: #fff; font-size: 20px; margin-bottom: 18px;
        }
        .card h3 { font-size: 18px; font-weight: 800; margin-bottom: 10px; }
        .card p { color: var(--text-muted); font-size: 14px; line-height: 1.7; }

        /* 分类入口 */
        .category-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 28px; }
        .category-card {
            border-radius: 20px; overflow: hidden; position: relative;
            border: 1px solid var(--border); background: #fff;
            box-shadow: var(--card-shadow); transition: all .3s;
        }
        .category-card:hover { transform: translateY(-6px); box-shadow: var(--hover-shadow); }
        .category-card .cat-img { height: 190px; background-size: cover; background-position: center; position: relative; }
        .category-card .cat-img::after {
            content: ""; position: absolute; inset: 0; background: linear-gradient(180deg, transparent 30%, rgba(10,22,40,0.7));
        }
        .category-card .cat-body { padding: 26px; }
        .category-card .cat-body h3 { font-size: 20px; font-weight: 800; }
        .category-card .cat-body p { color: var(--text-muted); font-size: 14px; margin-top: 10px; line-height: 1.7; }
        .cat-more {
            display: inline-flex; align-items: center; gap: 8px; margin-top: 16px;
            color: var(--accent); font-weight: 700; font-size: 14px;
        }
        .cat-more:hover { gap: 14px; }

        /* 资讯列表 */
        .list-panel { background: #fff; border-radius: var(--radius); border: 1px solid var(--border); overflow: hidden; }
        .list-item {
            display: flex; align-items: center; padding: 22px 28px; gap: 24px;
            border-bottom: 1px solid #f0f2f6; transition: background .2s;
        }
        .list-item:last-child { border-bottom: none; }
        .list-item:hover { background: #f8fafc; }
        .list-item .badge {
            flex-shrink: 0; background: rgba(255,91,53,0.1); color: var(--accent);
            font-size: 12px; font-weight: 700; padding: 4px 12px; border-radius: 50px;
        }
        .list-item .item-title { font-size: 16px; font-weight: 700; color: var(--text-main); flex: 1; }
        .list-item .item-title:hover { color: var(--accent); }
        .list-item .item-desc { font-size: 14px; color: var(--text-muted); flex: 1; }
        .list-item .item-date { font-size: 13px; color: #98a4b3; flex-shrink: 0; }
        .empty-tip { padding: 40px; text-align: center; color: var(--text-muted); font-size: 15px; }

        /* 步骤流程 */
        .step-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 28px; }
        .step-card { text-align: left; position: relative; padding: 24px 20px; }
        .step-num {
            width: 48px; height: 48px; border-radius: 12px;
            background: var(--primary); color: #fff; font-size: 18px; font-weight: 800;
            display: flex; align-items: center; justify-content: center;
            margin-bottom: 18px; position: relative;
        }
        .step-card::after {
            content: ""; position: absolute; top: 38px; right: -14px;
            width: 28px; height: 2px; background: #dbe1e8;
        }
        .step-card:last-child::after { display: none; }
        .step-card h3 { font-size: 17px; font-weight: 800; margin-bottom: 8px; }
        .step-card p { font-size: 13px; color: var(--text-muted); line-height: 1.7; }

        /* 数据块 */
        .data-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; }
        .data-card {
            background: rgba(255,255,255,0.05); border: 1px solid rgba(255,255,255,0.1);
            border-radius: var(--radius); padding: 30px 24px; text-align: center;
        }
        .data-card strong { display: block; font-size: 32px; font-weight: 900; color: var(--accent); }
        .data-card span { font-size: 14px; color: #8ea3b8; }

        /* FAQ */
        .faq-list { max-width: 860px; margin: 0 auto; }
        .faq-item {
            background: #fff; border: 1px solid var(--border); border-radius: 14px;
            margin-bottom: 14px; padding: 24px 28px; box-shadow: 0 4px 16px rgba(10,22,40,0.04);
        }
        .faq-item summary {
            display: flex; justify-content: space-between; align-items: center;
            cursor: pointer; font-weight: 700; font-size: 16px; list-style: none;
        }
        .faq-item summary::after { content: "+"; font-size: 20px; color: var(--accent); font-weight: 400; transition: .3s; }
        .faq-item[open] summary::after { transform: rotate(45deg); }
        .faq-item p { margin-top: 14px; color: var(--text-muted); font-size: 14px; line-height: 1.8; }

        /* CTA */
        .cta-panel {
            background: linear-gradient(135deg, var(--primary), #142e4d);
            border-radius: 24px; padding: 54px; text-align: center;
            color: #fff; position: relative; overflow: hidden;
        }
        .cta-panel::before {
            content: ""; position: absolute; width: 200px; height: 200px;
            background: rgba(255,91,53,0.2); filter: blur(70px); border-radius: 50%;
            top: -60px; right: -60px;
        }
        .cta-panel h2 { font-size: 30px; font-weight: 900; }
        .cta-panel p { color: #9fb2c7; margin: 14px auto 26px; max-width: 520px; font-size: 15px; }

        /* 页脚 */
        .site-footer { background: var(--primary); color: #8b9db1; padding: 50px 0 20px; }
        .footer-grid { display: grid; grid-template-columns: 2fr 1fr 1fr; gap: 40px; }
        .footer-brand .logo { color: #fff; margin-bottom: 16px; }
        .footer-brand p { font-size: 14px; line-height: 1.8; }
        .footer-col h4 { color: #fff; font-size: 15px; font-weight: 700; margin-bottom: 16px; }
        .footer-col a { display: block; font-size: 14px; padding: 6px 0; }
        .footer-col a:hover { color: var(--accent); }
        .footer-bottom {
            border-top: 1px solid rgba(255,255,255,0.08);
            margin-top: 40px; padding-top: 20px; text-align: center; font-size: 13px;
        }

        /* 响应式 */
        @media (max-width: 1024px) {
            .hero-inner { grid-template-columns: 1fr; }
            .card-grid { grid-template-columns: repeat(2, 1fr); }
            .step-grid { grid-template-columns: repeat(2, 1fr); }
            .step-card::after { display: none; }
            .data-grid { grid-template-columns: repeat(2, 1fr); }
        }
        @media (max-width: 768px) {
            .nav-menu { display: none; }
            .mobile-toggle { display: block; }
            .nav-menu.open {
                display: flex; flex-direction: column; position: absolute;
                top: 72px; left: 0; right: 0; background: #fff;
                border-bottom: 1px solid var(--border); padding: 16px 24px;
                box-shadow: 0 20px 30px rgba(0,0,0,0.08);
            }
            .category-grid { grid-template-columns: 1fr; }
            .hero-content { padding: 60px 20px 50px; }
            .hero h1 { font-size: 30px; }
            .section { padding: 60px 0; }
            .section-title h2 { font-size: 26px; }
            .footer-grid { grid-template-columns: 1fr; }
            .cta-panel { padding: 36px 20px; }
            .cta-panel h2 { font-size: 24px; }
        }
        @media (max-width: 520px) {
            .card-grid { grid-template-columns: 1fr; }
            .step-grid { grid-template-columns: 1fr; }
            .data-grid { grid-template-columns: 1fr; }
            .hero-stats { gap: 18px; }
            .list-item { flex-direction: column; align-items: flex-start; gap: 10px; }
        }

/* roulang page: category1 */
:root {
            --bg-primary: #050913;
            --bg-surface: #0a101f;
            --bg-card: #111a2e;
            --bg-elevated: #1a2540;
            --accent: #f59e0b;
            --accent-hover: #d97706;
            --accent-secondary: #22d3ee;
            --text-primary: #f1f5f9;
            --text-body: #cbd5e1;
            --text-muted: #94a3b8;
            --border-color: rgba(148, 163, 184, 0.14);
            --radius: 14px;
            --radius-sm: 8px;
            --shadow: 0 4px 24px rgba(0, 0, 0, 0.35);
            --shadow-hover: 0 10px 36px rgba(0, 0, 0, 0.55);
            --transition: 0.25s ease;
        }

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

        html {
            scroll-behavior: smooth;
        }

        body {
            font-family: 'Noto Sans SC', system-ui, -apple-system, 'PingFang SC', 'Microsoft YaHei', sans-serif;
            line-height: 1.7;
            background-color: var(--bg-primary);
            color: var(--text-body);
            -webkit-font-smoothing: antialiased;
        }

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

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

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

        input {
            font-family: inherit;
        }

        .container {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 24px;
        }

        /* ===== Header / Nav ===== */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 100;
            background: rgba(5, 9, 19, 0.92);
            backdrop-filter: blur(14px);
            border-bottom: 1px solid var(--border-color);
        }

        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 72px;
            gap: 24px;
        }

        .logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 20px;
            font-weight: 800;
            color: var(--text-primary);
            letter-spacing: 0.02em;
            white-space: nowrap;
            flex-shrink: 0;
        }

        .logo-mark {
            width: 38px;
            height: 38px;
            display: flex;
            align-items: center;
            justify-content: center;
            border-radius: 10px;
            background: linear-gradient(135deg, #f59e0b, #fbbf24);
            color: #050913;
            font-size: 18px;
            box-shadow: 0 0 20px rgba(245, 158, 11, 0.35);
        }

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

        .nav-link {
            display: inline-flex;
            align-items: center;
            padding: 9px 16px;
            border-radius: 8px;
            font-size: 15px;
            font-weight: 500;
            color: var(--text-body);
            transition: all var(--transition);
            position: relative;
            border: 1px solid transparent;
        }

        .nav-link:hover {
            color: var(--text-primary);
            background: rgba(148, 163, 184, 0.08);
        }

        .nav-link.active {
            color: #fbbf24;
            background: rgba(245, 158, 11, 0.1);
            border-color: rgba(245, 158, 11, 0.25);
            box-shadow: 0 0 16px rgba(245, 158, 11, 0.08);
        }

        .nav-item {
            position: relative;
        }

        .mega-panel {
            position: absolute;
            top: calc(100% + 8px);
            left: 50%;
            transform: translateX(-50%);
            min-width: 280px;
            background: var(--bg-elevated);
            border: 1px solid var(--border-color);
            border-radius: var(--radius);
            box-shadow: var(--shadow-hover);
            padding: 20px;
            opacity: 0;
            visibility: hidden;
            transition: all 0.22s ease;
            z-index: 50;
        }

        .mega-panel::before {
            content: '';
            position: absolute;
            top: -6px;
            left: 50%;
            transform: translateX(-50%) rotate(45deg);
            width: 14px;
            height: 14px;
            background: var(--bg-elevated);
            border-left: 1px solid var(--border-color);
            border-top: 1px solid var(--border-color);
        }

        .nav-item:hover .mega-panel {
            opacity: 1;
            visibility: visible;
            top: calc(100% + 4px);
        }

        .panel-title {
            font-size: 13px;
            font-weight: 700;
            color: var(--accent);
            letter-spacing: 0.08em;
            margin-bottom: 12px;
            padding-bottom: 8px;
            border-bottom: 1px solid var(--border-color);
        }

        .mega-panel a {
            display: flex;
            align-items: center;
            gap: 10px;
            padding: 9px 12px;
            border-radius: 8px;
            font-size: 14px;
            color: var(--text-body);
            transition: all var(--transition);
        }

        .mega-panel a:hover {
            background: rgba(245, 158, 11, 0.08);
            color: #fbbf24;
            transform: translateX(4px);
        }

        .mega-panel a i {
            width: 20px;
            text-align: center;
            color: var(--accent);
        }

        .nav-toggle {
            display: none;
            width: 42px;
            height: 42px;
            border-radius: 10px;
            border: 1px solid var(--border-color);
            background: rgba(148, 163, 184, 0.06);
            color: var(--text-primary);
            font-size: 18px;
            align-items: center;
            justify-content: center;
            transition: all var(--transition);
        }

        .nav-toggle:hover {
            background: rgba(245, 158, 11, 0.15);
            border-color: rgba(245, 158, 11, 0.3);
        }

        /* ===== Hero ===== */
        .hero-category {
            position: relative;
            padding: 90px 0 84px;
            background-size: cover;
            background-position: center;
            background-repeat: no-repeat;
            border-bottom: 1px solid var(--border-color);
        }

        .hero-category::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(110deg, rgba(5, 9, 19, 0.97) 30%, rgba(5, 9, 19, 0.72) 100%);
        }

        .hero-category .container {
            position: relative;
            z-index: 2;
        }

        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 6px 16px;
            border-radius: 999px;
            font-size: 13px;
            font-weight: 600;
            letter-spacing: 0.06em;
            color: #fbbf24;
            background: rgba(245, 158, 11, 0.12);
            border: 1px solid rgba(245, 158, 11, 0.3);
            margin-bottom: 20px;
        }

        .hero-badge .dot {
            width: 8px;
            height: 8px;
            border-radius: 50%;
            background: #fbbf24;
            box-shadow: 0 0 12px rgba(245, 158, 11, 0.8);
            animation: pulse-dot 1.8s infinite;
        }

        @keyframes pulse-dot {
            0%, 100% { opacity: 1; transform: scale(1); }
            50% { opacity: 0.5; transform: scale(0.8); }
        }

        .hero-title {
            font-size: clamp(34px, 5vw, 56px);
            font-weight: 800;
            color: var(--text-primary);
            line-height: 1.18;
            letter-spacing: -0.02em;
            margin-bottom: 18px;
        }

        .hero-title .gradient-text {
            background: linear-gradient(90deg, #fbbf24, #f59e0b, #fcd34d);
            -webkit-background-clip: text;
            background-clip: text;
            color: transparent;
        }

        .hero-desc {
            font-size: 17px;
            max-width: 640px;
            color: var(--text-body);
            margin-bottom: 32px;
        }

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

        .btn-primary {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            padding: 13px 28px;
            border-radius: 10px;
            font-size: 15px;
            font-weight: 600;
            color: #050913;
            background: linear-gradient(135deg, #fbbf24, #f59e0b);
            box-shadow: 0 4px 18px rgba(245, 158, 11, 0.3);
            transition: all var(--transition);
            border: 1px solid rgba(245, 158, 11, 0.4);
        }

        .btn-primary:hover {
            transform: translateY(-2px);
            box-shadow: 0 8px 28px rgba(245, 158, 11, 0.4);
            background: linear-gradient(135deg, #fcd34d, #fbbf24);
        }

        .btn-primary:active {
            transform: translateY(0);
            box-shadow: 0 2px 12px rgba(245, 158, 11, 0.3);
        }

        .btn-ghost {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            padding: 13px 28px;
            border-radius: 10px;
            font-size: 15px;
            font-weight: 500;
            color: var(--text-primary);
            background: rgba(148, 163, 184, 0.08);
            border: 1px solid var(--border-color);
            transition: all var(--transition);
        }

        .btn-ghost:hover {
            border-color: rgba(245, 158, 11, 0.4);
            background: rgba(245, 158, 11, 0.08);
            color: #fbbf24;
        }

        .hero-meta {
            display: flex;
            flex-wrap: wrap;
            gap: 16px;
            margin-top: 40px;
            padding-top: 22px;
            border-top: 1px solid var(--border-color);
        }

        .hero-meta span {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            font-size: 13px;
            color: var(--text-muted);
        }

        .hero-meta i {
            color: var(--accent);
        }

        /* ===== Breadcrumb ===== */
        .breadcrumb-wrap {
            padding: 18px 0;
            background: var(--bg-surface);
            border-bottom: 1px solid var(--border-color);
        }

        .breadcrumb-list {
            display: flex;
            align-items: center;
            flex-wrap: wrap;
            gap: 8px;
            font-size: 14px;
            color: var(--text-muted);
            list-style: none;
        }

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

        .breadcrumb-list li:not(:last-child)::after {
            content: '/';
            color: var(--text-muted);
            opacity: 0.5;
            font-size: 12px;
        }

        .breadcrumb-list a:hover {
            color: #fbbf24;
        }

        .breadcrumb-list .current {
            color: #fbbf24;
            font-weight: 500;
        }

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

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

        .section-head {
            margin-bottom: 48px;
            max-width: 720px;
        }

        .section-head.center {
            margin-left: auto;
            margin-right: auto;
            text-align: center;
        }

        .section-tag {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            font-size: 13px;
            font-weight: 600;
            letter-spacing: 0.08em;
            color: var(--accent);
            text-transform: uppercase;
            margin-bottom: 14px;
        }

        .section-tag .line {
            width: 28px;
            height: 2px;
            background: linear-gradient(90deg, transparent, var(--accent));
            border-radius: 2px;
        }

        .section-title {
            font-size: clamp(26px, 3.5vw, 38px);
            font-weight: 700;
            color: var(--text-primary);
            line-height: 1.3;
            margin-bottom: 14px;
            letter-spacing: -0.01em;
        }

        .section-desc {
            font-size: 16px;
            color: var(--text-muted);
            line-height: 1.8;
        }

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

        .info-card {
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: var(--radius);
            padding: 28px;
            transition: all var(--transition);
            position: relative;
            overflow: hidden;
        }

        .info-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 3px;
            background: linear-gradient(90deg, var(--accent), transparent);
            opacity: 0.5;
            transition: opacity var(--transition);
        }

        .info-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-hover);
            border-color: rgba(245, 158, 11, 0.35);
        }

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

        .card-icon {
            width: 52px;
            height: 52px;
            border-radius: 12px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 22px;
            margin-bottom: 20px;
            background: rgba(245, 158, 11, 0.12);
            color: #fbbf24;
            border: 1px solid rgba(245, 158, 11, 0.2);
        }

        .card-icon.cyan {
            background: rgba(34, 211, 238, 0.1);
            color: #22d3ee;
            border-color: rgba(34, 211, 238, 0.2);
        }

        .card-icon.green {
            background: rgba(74, 222, 128, 0.1);
            color: #4ade80;
            border-color: rgba(74, 222, 128, 0.2);
        }

        .card-icon.purple {
            background: rgba(167, 139, 250, 0.1);
            color: #a78bfa;
            border-color: rgba(167, 139, 250, 0.2);
        }

        .info-card h3 {
            font-size: 18px;
            font-weight: 600;
            color: var(--text-primary);
            margin-bottom: 10px;
            letter-spacing: 0.01em;
        }

        .info-card p {
            font-size: 14.5px;
            color: var(--text-muted);
            line-height: 1.75;
            margin-bottom: 16px;
        }

        .card-link {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-size: 14px;
            font-weight: 500;
            color: var(--accent);
            transition: gap var(--transition);
        }

        .card-link:hover {
            gap: 12px;
            color: #fcd34d;
        }

        /* ===== Cover cards ===== */
        .cover-card-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 28px;
        }

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

        .cover-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-hover);
            border-color: rgba(245, 158, 11, 0.3);
        }

        .cover-image {
            position: relative;
            aspect-ratio: 16 / 9;
            overflow: hidden;
        }

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

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

        .cover-image .badge {
            position: absolute;
            top: 14px;
            left: 14px;
            padding: 5px 12px;
            border-radius: 6px;
            font-size: 12px;
            font-weight: 600;
            color: #050913;
            background: #fbbf24;
            box-shadow: 0 2px 10px rgba(0, 0, 0, 0.3);
        }

        .cover-body {
            padding: 22px;
        }

        .cover-body h3 {
            font-size: 17px;
            font-weight: 600;
            color: var(--text-primary);
            margin-bottom: 8px;
            line-height: 1.4;
        }

        .cover-body p {
            font-size: 14px;
            color: var(--text-muted);
            line-height: 1.7;
            margin-bottom: 16px;
        }

        .cover-meta {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 13px;
            color: var(--text-muted);
            margin-top: 12px;
            padding-top: 14px;
            border-top: 1px solid var(--border-color);
        }

        .cover-meta i {
            color: var(--accent);
            font-size: 12px;
        }

        /* ===== Steps ===== */
        .steps-wrap {
            position: relative;
            max-width: 820px;
            margin: 0 auto;
        }

        .steps-wrap::before {
            content: '';
            position: absolute;
            top: 0;
            bottom: 0;
            left: 28px;
            width: 2px;
            background: linear-gradient(180deg, rgba(245, 158, 11, 0.5), rgba(34, 211, 238, 0.2));
        }

        .step-item {
            position: relative;
            padding-left: 80px;
            padding-bottom: 40px;
        }

        .step-item:last-child {
            padding-bottom: 0;
        }

        .step-number {
            position: absolute;
            left: 0;
            top: 0;
            width: 56px;
            height: 56px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 18px;
            font-weight: 700;
            color: #050913;
            background: linear-gradient(135deg, #fbbf24, #f59e0b);
            box-shadow: 0 0 20px rgba(245, 158, 11, 0.3);
            z-index: 2;
        }

        .step-item:nth-child(even) .step-number {
            background: linear-gradient(135deg, #22d3ee, #0891b2);
            box-shadow: 0 0 20px rgba(34, 211, 238, 0.3);
        }

        .step-card {
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: var(--radius);
            padding: 24px 26px;
            transition: all var(--transition);
        }

        .step-card:hover {
            border-color: rgba(245, 158, 11, 0.3);
            box-shadow: var(--shadow);
        }

        .step-card h3 {
            font-size: 17px;
            font-weight: 600;
            color: var(--text-primary);
            margin-bottom: 8px;
        }

        .step-card p {
            font-size: 14.5px;
            color: var(--text-muted);
            line-height: 1.75;
            margin-bottom: 10px;
        }

        .step-card .tip {
            display: inline-flex;
            align-items: flex-start;
            gap: 8px;
            font-size: 13px;
            color: var(--accent);
            background: rgba(245, 158, 11, 0.08);
            border-radius: 8px;
            padding: 8px 14px;
            border: 1px solid rgba(245, 158, 11, 0.15);
        }

        .step-card .tip i {
            margin-top: 2px;
        }

        /* ===== Config panel ===== */
        .config-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 24px;
        }

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

        .config-panel-header {
            display: flex;
            align-items: center;
            gap: 14px;
            padding: 20px 24px;
            background: var(--bg-elevated);
            border-bottom: 1px solid var(--border-color);
        }

        .config-panel-header .icon {
            width: 40px;
            height: 40px;
            border-radius: 10px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 17px;
            background: rgba(245, 158, 11, 0.12);
            color: #fbbf24;
        }

        .config-panel-header h3 {
            font-size: 16px;
            font-weight: 600;
            color: var(--text-primary);
        }

        .config-list {
            padding: 10px 24px 20px;
        }

        .config-row {
            display: flex;
            align-items: flex-start;
            justify-content: space-between;
            gap: 16px;
            padding: 14px 0;
            border-bottom: 1px dashed rgba(148, 163, 184, 0.12);
        }

        .config-row:last-child {
            border-bottom: none;
        }

        .config-row .label {
            font-size: 14px;
            color: var(--text-muted);
            flex-shrink: 0;
        }

        .config-row .value {
            font-size: 14px;
            color: var(--text-primary);
            text-align: right;
            font-weight: 500;
        }

        .config-row .value .status {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 3px 10px;
            border-radius: 999px;
            font-size: 12px;
            font-weight: 600;
            background: rgba(74, 222, 128, 0.12);
            color: #4ade80;
            border: 1px solid rgba(74, 222, 128, 0.2);
        }

        .config-row .value .status.warn {
            background: rgba(245, 158, 11, 0.1);
            color: #fbbf24;
            border-color: rgba(245, 158, 11, 0.2);
        }

        /* ===== FAQ ===== */
        .faq-wrap {
            max-width: 820px;
            margin: 0 auto;
        }

        .faq-item {
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: var(--radius);
            margin-bottom: 14px;
            overflow: hidden;
            transition: border-color var(--transition);
        }

        .faq-item.active {
            border-color: rgba(245, 158, 11, 0.35);
        }

        .faq-question {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            padding: 20px 24px;
            cursor: pointer;
            font-size: 15.5px;
            font-weight: 500;
            color: var(--text-primary);
            user-select: none;
            transition: color var(--transition);
        }

        .faq-question:hover {
            color: #fbbf24;
        }

        .faq-question .faq-icon {
            width: 30px;
            height: 30px;
            flex-shrink: 0;
            display: flex;
            align-items: center;
            justify-content: center;
            border-radius: 8px;
            background: rgba(245, 158, 11, 0.1);
            color: var(--accent);
            font-size: 13px;
            transition: transform var(--transition);
        }

        .faq-item.active .faq-icon {
            transform: rotate(45deg);
        }

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.3s ease;
            padding: 0 24px;
        }

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

        .faq-answer p {
            font-size: 14.5px;
            color: var(--text-muted);
            line-height: 1.8;
            padding-top: 4px;
            border-top: 1px dashed rgba(148, 163, 184, 0.15);
        }

        /* ===== CTA ===== */
        .cta-block {
            position: relative;
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: 22px;
            padding: 60px;
            text-align: center;
            overflow: hidden;
            background-image: linear-gradient(135deg, rgba(245, 158, 11, 0.06) 0%, rgba(34, 211, 238, 0.05) 100%);
        }

        .cta-block::before {
            content: '';
            position: absolute;
            top: -60%;
            right: -20%;
            width: 320px;
            height: 320px;
            border-radius: 50%;
            background: radial-gradient(circle, rgba(245, 158, 11, 0.12), transparent 70%);
            pointer-events: none;
        }

        .cta-block::after {
            content: '';
            position: absolute;
            bottom: -60%;
            left: -20%;
            width: 260px;
            height: 260px;
            border-radius: 50%;
            background: radial-gradient(circle, rgba(34, 211, 238, 0.1), transparent 70%);
            pointer-events: none;
        }

        .cta-block .cta-inner {
            position: relative;
            z-index: 2;
        }

        .cta-block h2 {
            font-size: clamp(24px, 3vw, 34px);
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: 12px;
        }

        .cta-block p {
            font-size: 16px;
            color: var(--text-muted);
            max-width: 560px;
            margin: 0 auto 30px;
        }

        /* ===== Footer ===== */
        .site-footer {
            background: var(--bg-surface);
            border-top: 1px solid var(--border-color);
            padding: 60px 0 0;
            margin-top: 20px;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 1.6fr 1fr 1fr;
            gap: 48px;
            padding-bottom: 40px;
        }

        .footer-brand .logo {
            margin-bottom: 18px;
        }

        .footer-brand p {
            font-size: 14.5px;
            color: var(--text-muted);
            line-height: 1.8;
            max-width: 360px;
        }

        .footer-col h4 {
            font-size: 15px;
            font-weight: 600;
            color: var(--text-primary);
            margin-bottom: 16px;
            letter-spacing: 0.04em;
        }

        .footer-col a {
            display: flex;
            align-items: center;
            gap: 8px;
            padding: 6px 0;
            font-size: 14px;
            color: var(--text-muted);
            transition: all var(--transition);
        }

        .footer-col a::before {
            content: '';
            width: 4px;
            height: 4px;
            border-radius: 50%;
            background: var(--accent);
            opacity: 0.6;
            transition: opacity var(--transition);
        }

        .footer-col a:hover {
            color: #fbbf24;
            transform: translateX(4px);
        }

        .footer-col a:hover::before {
            opacity: 1;
        }

        .footer-bottom {
            border-top: 1px solid var(--border-color);
            padding: 22px 0;
            text-align: center;
        }

        .footer-bottom p {
            font-size: 13.5px;
            color: var(--text-muted);
        }

        /* ===== Mobile Responsive ===== */
        @media (max-width: 1024px) {
            .nav-toggle {
                display: inline-flex;
            }

            .nav-menu {
                position: absolute;
                top: 72px;
                left: 0;
                right: 0;
                flex-direction: column;
                align-items: stretch;
                background: var(--bg-surface);
                border-bottom: 1px solid var(--border-color);
                padding: 12px 20px;
                max-height: 0;
                overflow: hidden;
                opacity: 0;
                transition: max-height 0.35s ease, opacity 0.25s ease, padding 0.25s ease;
                box-shadow: 0 20px 40px rgba(0, 0, 0, 0.5);
            }

            .nav-menu.open {
                max-height: 640px;
                opacity: 1;
                padding: 12px 20px 20px;
            }

            .nav-menu .nav-link {
                padding: 12px 14px;
                width: 100%;
            }

            .nav-item {
                width: 100%;
            }

            .mega-panel {
                position: static;
                transform: none;
                opacity: 1;
                visibility: visible;
                box-shadow: none;
                border: none;
                border-left: 2px solid rgba(245, 158, 11, 0.25);
                border-radius: 0;
                margin: 4px 0 4px 12px;
                padding: 10px 14px;
                display: none;
                background: transparent;
            }

            .mega-panel::before {
                display: none;
            }

            .nav-item.open .mega-panel {
                display: block;
            }

            .mega-panel a {
                padding: 8px 10px;
            }

            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 32px;
            }
        }

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

            .hero-category {
                padding: 64px 0 56px;
            }

            .card-grid,
            .cover-card-grid {
                grid-template-columns: 1fr;
                gap: 16px;
            }

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

            .cta-block {
                padding: 40px 24px;
                border-radius: 16px;
            }

            .steps-wrap::before {
                left: 22px;
            }

            .step-item {
                padding-left: 60px;
            }

            .step-number {
                width: 44px;
                height: 44px;
                font-size: 15px;
            }
        }

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

            .header-inner {
                height: 64px;
            }

            .logo {
                font-size: 17px;
            }

            .logo-mark {
                width: 32px;
                height: 32px;
                font-size: 14px;
            }

            .hero-title {
                font-size: 28px;
            }

            .hero-desc {
                font-size: 15px;
            }

            .hero-actions .btn-primary,
            .hero-actions .btn-ghost {
                padding: 11px 20px;
                font-size: 14px;
            }

            .footer-grid {
                grid-template-columns: 1fr;
                gap: 28px;
            }

            .footer-brand p {
                max-width: 100%;
            }

            .faq-question {
                font-size: 14.5px;
                padding: 16px 18px;
            }

            .faq-answer {
                padding: 0 18px;
            }

            .faq-item.active .faq-answer {
                padding: 0 18px 16px;
            }

            .cover-body {
                padding: 18px;
            }

            .info-card {
                padding: 22px;
            }

            .step-card {
                padding: 18px;
            }
        }

/* roulang page: article */
:root {
    --bg-primary: #0a0e17;
    --bg-secondary: #0f1420;
    --bg-card: #161e2e;
    --bg-deep: #060a12;
    --accent: #e64545;
    --accent-hover: #ff5a5a;
    --accent-secondary: #f59e0b;
    --cyan: #22d3ee;
    --text-primary: #f1f5f9;
    --text-secondary: #94a3b8;
    --text-muted: #64748b;
    --border: #1e293b;
    --border-light: #334155;
    --radius: 14px;
    --radius-sm: 8px;
    --shadow: 0 12px 40px rgba(0, 0, 0, 0.5);
    --shadow-sm: 0 4px 16px rgba(0, 0, 0, 0.3);
    --transition: 0.3s ease;
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'PingFang SC', 'Microsoft YaHei', 'Segoe UI', Roboto, sans-serif;
    background: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.75;
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
}

a {
    color: inherit;
    text-decoration: none;
    transition: all 0.3s ease;
}

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

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

::-webkit-scrollbar {
    width: 8px;
}
::-webkit-scrollbar-track {
    background: var(--bg-deep);
}
::-webkit-scrollbar-thumb {
    background: var(--border-light);
    border-radius: 10px;
}
::selection {
    background: rgba(230, 69, 69, 0.35);
    color: #fff;
}

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

/* ===== Header / Nav ===== */
.site-header {
    position: sticky;
    top: 0;
    z-index: 100;
    background: rgba(10, 14, 23, 0.85);
    backdrop-filter: blur(14px);
    -webkit-backdrop-filter: blur(14px);
    border-bottom: 1px solid rgba(30, 41, 59, 0.7);
    box-shadow: 0 4px 24px rgba(0, 0, 0, 0.25);
}

.header-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 72px;
    gap: 28px;
}

.logo {
    display: flex;
    align-items: center;
    gap: 10px;
    font-weight: 800;
    font-size: 1.18rem;
    letter-spacing: -0.01em;
    color: #fff;
    white-space: nowrap;
}

.logo-mark {
    width: 40px;
    height: 40px;
    display: grid;
    place-items: center;
    border-radius: 11px;
    background: linear-gradient(135deg, #e64545, #f59e0b);
    color: #fff;
    font-size: 1.05rem;
    box-shadow: 0 0 26px rgba(230, 69, 69, 0.4);
    flex-shrink: 0;
}

.nav-menu {
    display: flex;
    align-items: center;
    gap: 6px;
    flex: 1;
    justify-content: center;
}

.nav-link {
    position: relative;
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 9px 16px;
    border-radius: 8px;
    font-weight: 500;
    font-size: 0.9rem;
    color: var(--text-secondary);
    transition: all 0.3s ease;
    white-space: nowrap;
}

.nav-link:hover {
    color: #fff;
    background: rgba(255, 255, 255, 0.06);
}

.nav-link.active {
    color: #fff;
    background: rgba(230, 69, 69, 0.16);
}

.nav-link.active::after {
    content: '';
    position: absolute;
    left: 16px;
    right: 16px;
    bottom: 2px;
    height: 2px;
    background: var(--accent);
    border-radius: 2px;
}

.nav-item {
    position: relative;
}

.mega-panel {
    position: absolute;
    top: calc(100% + 14px);
    left: 50%;
    transform: translateX(-50%) translateY(10px);
    width: 440px;
    background: #0f172a;
    border: 1px solid var(--border);
    border-radius: 16px;
    padding: 20px;
    box-shadow: var(--shadow);
    opacity: 0;
    visibility: hidden;
    transition: all 0.35s cubic-bezier(0.23, 1, 0.32, 1);
    z-index: 300;
}

.nav-item:hover .mega-panel,
.nav-item:focus-within .mega-panel {
    opacity: 1;
    visibility: visible;
    transform: translateX(-50%) translateY(0);
}

.mega-panel::before {
    content: '';
    position: absolute;
    top: -8px;
    left: 50%;
    transform: translateX(-50%);
    border-left: 8px solid transparent;
    border-right: 8px solid transparent;
    border-bottom: 8px solid #0f172a;
}

.panel-title {
    font-size: 0.8rem;
    font-weight: 700;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    color: var(--text-muted);
    margin-bottom: 14px;
    padding-bottom: 10px;
    border-bottom: 1px solid var(--border);
    display: flex;
    align-items: center;
    gap: 8px;
}

.mega-panel a {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 10px 12px;
    margin: 2px 0;
    border-radius: 8px;
    font-size: 0.9rem;
    color: var(--text-secondary);
    transition: all 0.25s ease;
}

.mega-panel a:hover {
    background: rgba(255, 255, 255, 0.07);
    color: #fff;
    transform: translateX(5px);
}

.mega-panel a i {
    width: 20px;
    text-align: center;
    color: var(--accent);
    flex-shrink: 0;
}

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

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 10px 22px;
    border-radius: 10px;
    font-weight: 600;
    font-size: 0.9rem;
    transition: all 0.3s ease;
    border: 1px solid transparent;
}

.btn-primary {
    background: var(--accent);
    color: #fff;
}

.btn-primary:hover {
    background: var(--accent-hover);
    transform: translateY(-2px);
    box-shadow: 0 8px 26px rgba(230, 69, 69, 0.35);
}

.btn-gold {
    background: var(--accent-secondary);
    color: #0a0e17;
}

.btn-gold:hover {
    background: #fbbf24;
    transform: translateY(-2px);
    box-shadow: 0 10px 32px rgba(245, 158, 11, 0.3);
}

.btn-outline {
    border-color: var(--border-light);
    color: var(--text-primary);
    background: transparent;
}

.btn-outline:hover {
    background: rgba(255, 255, 255, 0.08);
    border-color: var(--text-muted);
}

.btn-lg {
    padding: 14px 30px;
    font-size: 1rem;
    border-radius: 12px;
}

.btn-sm {
    padding: 7px 16px;
    font-size: 0.85rem;
    border-radius: 8px;
}

.menu-toggle {
    display: none;
    width: 42px;
    height: 42px;
    border: 1px solid var(--border-light);
    border-radius: 10px;
    align-items: center;
    justify-content: center;
    font-size: 1.1rem;
    color: var(--text-primary);
    transition: all 0.3s;
}

.menu-toggle:hover {
    background: rgba(255, 255, 255, 0.06);
}

/* ===== Article Hero ===== */
.article-hero {
    position: relative;
    padding: 70px 0 110px;
    background: url('/assets/images/backpic/back-1.png') center center / cover no-repeat;
    border-bottom: 1px solid var(--border);
    overflow: hidden;
}

.article-hero::before {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(180deg, rgba(6, 10, 18, 0.2) 0%, rgba(6, 10, 18, 0.82) 55%, var(--bg-primary) 100%);
}

.article-hero::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, var(--accent), var(--accent-secondary), transparent);
}

.article-hero .container {
    position: relative;
    z-index: 5;
    max-width: 900px;
}

.breadcrumb {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 0.85rem;
    color: var(--text-secondary);
    margin-bottom: 26px;
    flex-wrap: wrap;
}

.breadcrumb a {
    color: var(--text-secondary);
    transition: all 0.3s;
}

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

.breadcrumb .sep {
    color: var(--text-muted);
}

.breadcrumb .current {
    color: var(--text-primary);
    font-weight: 500;
    max-width: 300px;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.hero-tags {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 20px;
    flex-wrap: wrap;
}

.tag {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 6px 14px;
    border-radius: 999px;
    font-size: 0.78rem;
    font-weight: 600;
    border: 1px solid var(--border-light);
    color: var(--text-secondary);
    background: rgba(15, 23, 42, 0.6);
    backdrop-filter: blur(8px);
}

.tag-accent {
    background: rgba(230, 69, 69, 0.16);
    border-color: rgba(230, 69, 69, 0.4);
    color: #fca5a5;
}

.tag-gold {
    background: rgba(245, 158, 11, 0.14);
    border-color: rgba(245, 158, 11, 0.4);
    color: #fcd34d;
}

.article-hero h1 {
    font-size: clamp(1.8rem, 4vw, 2.8rem);
    font-weight: 800;
    line-height: 1.3;
    color: #fff;
    letter-spacing: -0.02em;
    margin-bottom: 18px;
    text-shadow: 0 4px 20px rgba(0, 0, 0, 0.5);
}

.hero-desc {
    font-size: 1.05rem;
    color: #cbd5e1;
    max-width: 680px;
    line-height: 1.85;
    margin-bottom: 24px;
}

.hero-meta {
    display: flex;
    align-items: center;
    gap: 22px;
    font-size: 0.85rem;
    color: var(--text-secondary);
    flex-wrap: wrap;
}

.hero-meta span {
    display: inline-flex;
    align-items: center;
    gap: 7px;
}

.hero-meta i {
    color: var(--accent-secondary);
}

/* ===== Content Section ===== */
.content-section {
    padding: 80px 0 50px;
    background: var(--bg-primary);
}

.article-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 18px;
    padding: clamp(24px, 4vw, 44px);
    box-shadow: var(--shadow-sm);
}

.article-body {
    font-size: 1rem;
    color: #cbd5e1;
    line-height: 1.9;
}

.article-body h2 {
    font-size: 1.5rem;
    font-weight: 700;
    color: #f1f5f9;
    margin-top: 2.2rem;
    margin-bottom: 1rem;
    padding-bottom: 0.75rem;
    border-bottom: 2px solid rgba(230, 69, 69, 0.25);
    letter-spacing: -0.01em;
}

.article-body h3 {
    font-size: 1.2rem;
    font-weight: 600;
    color: #e2e8f0;
    margin-top: 1.8rem;
    margin-bottom: 0.75rem;
}

.article-body p {
    margin-bottom: 1.2rem;
    line-height: 1.9;
}

.article-body ul,
.article-body ol {
    padding-left: 1.5rem;
    margin-bottom: 1.4rem;
}

.article-body ul {
    list-style: none;
}

.article-body ul li {
    position: relative;
    padding-left: 1.2rem;
    margin-bottom: 0.55rem;
}

.article-body ul li::before {
    content: '◆';
    position: absolute;
    left: 0;
    color: var(--accent);
    font-size: 0.7rem;
    top: 0.3em;
}

.article-body ol {
    list-style: decimal;
}

.article-body ol li {
    margin-bottom: 0.55rem;
    padding-left: 0.25rem;
}

.article-body blockquote {
    border-left: 3px solid var(--accent);
    background: rgba(230, 69, 69, 0.07);
    padding: 18px 22px;
    border-radius: 0 12px 12px 0;
    margin: 1.8rem 0;
    color: #e2e8f0;
    font-style: normal;
}

.article-body img {
    border-radius: 14px;
    margin: 1.8rem 0;
    box-shadow: var(--shadow-sm);
}

.article-body a {
    color: var(--cyan);
    text-decoration: underline;
    text-underline-offset: 4px;
    text-decoration-color: rgba(34, 211, 238, 0.4);
}

.article-body a:hover {
    color: #67e8f9;
    text-decoration-color: #67e8f9;
}

.article-body table {
    width: 100%;
    border-collapse: collapse;
    margin: 1.8rem 0;
    font-size: 0.92rem;
}

.article-body th,
.article-body td {
    border: 1px solid var(--border-light);
    padding: 12px 14px;
    text-align: left;
}

.article-body th {
    background: #0f172a;
    color: #f1f5f9;
    font-weight: 600;
}

.article-body tr:nth-child(even) td {
    background: rgba(255, 255, 255, 0.02);
}

.article-footer-tags {
    margin-top: 40px;
    padding-top: 24px;
    border-top: 1px solid var(--border);
    display: flex;
    align-items: center;
    gap: 10px;
    flex-wrap: wrap;
    font-size: 0.85rem;
    color: var(--text-muted);
}

.article-footer-tags a {
    padding: 5px 12px;
    border-radius: 999px;
    background: rgba(255, 255, 255, 0.04);
    border: 1px solid var(--border);
    color: var(--text-secondary);
    font-size: 0.78rem;
    transition: all 0.3s;
}

.article-footer-tags a:hover {
    background: rgba(230, 69, 69, 0.12);
    color: #fff;
    border-color: rgba(230, 69, 69, 0.4);
}

/* ===== Not Found ===== */
.not-found-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 18px;
    padding: 60px 40px;
    text-align: center;
    box-shadow: var(--shadow-sm);
}

.not-found-card i {
    font-size: 3rem;
    color: var(--accent);
    margin-bottom: 20px;
    display: block;
}

.not-found-card h2 {
    font-size: 1.8rem;
    font-weight: 700;
    color: #f1f5f9;
    margin-bottom: 12px;
}

.not-found-card p {
    color: var(--text-secondary);
    margin-bottom: 28px;
    font-size: 1rem;
}

/* ===== Sidebar ===== */
.sidebar-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 16px;
    padding: 24px;
    margin-bottom: 24px;
    transition: all 0.3s ease;
}

.sidebar-card:hover {
    border-color: rgba(230, 69, 69, 0.3);
    box-shadow: var(--shadow-sm);
}

.sidebar-title {
    font-size: 1re?.05rem;
    font-weight: 700;
    color: #f1f5f9;
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 18px;
    padding-bottom: 14px;
    border-bottom: 1px solid var(--border);
}

.sidebar-title i {
    color: var(--accent);
    font-size: 0.95rem;
    width: 20px;
    text-align: center;
}

.sidebar-cat-link {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px 14px;
    margin-bottom: 8px;
    border-radius: 10px;
    border: 1px solid var(--border);
    background: rgba(255, 255, 255, 0.02);
    transition: all 0.3s ease;
}

.sidebar-cat-link:hover {
    background: rgba(230, 69, 69, 0.08);
    border-color: rgba(230, 69, 69, 0.35);
    transform: translateX(4px);
}

.sidebar-cat-link .cat-icon {
    width: 38px;
    height: 38px;
    border-radius: 10px;
    display: grid;
    place-items: center;
    font-size: 1rem;
    background: rgba(34, 211, 238, 0.12);
    color: var(--cyan);
    flex-shrink: 0;
}

.sidebar-cat-link:nth-child(n) .cat-icon.cat-red {
    background: rgba(230, 69, 69, 0.12);
    color: var(--accent);
}

.sidebar-cat-link .cat-text {
    flex: 1;
}

.sidebar-cat-link .cat-text strong {
    color: #f1f5f9;
    font-size: 0.92rem;
    display: block;
}

.sidebar-cat-link .cat-text span {
    color: var(--text-muted);
    font-size: 0.78rem;
}

.sidebar-cat-link i.fa-chevron-right {
    color: var(--text-muted);
    font-size: 0.8rem;
}

.security-box {
    background: linear-gradient(140deg, rgba(230, 69, 69, 0.08), rgba(245, 158, 11, 0.08));
    border: 1px solid rgba(230, 69, 69, 0.2);
    border-radius: 14px;
    padding: 18px;
    font-size: 0.88rem;
    color: #cbd5e1;
    line-height: 1.75;
}

.security-box strong {
    color: #fca5a5;
    display: block;
    margin-bottom: 6px;
    font-size: 0.95rem;
}

.security-box i {
    color: var(--accent);
    margin-right: 6px;
}

.quick-access-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    width: 100%;
    margin-top: 8px;
}

/* ===== Related Section ===== */
.related-section {
    padding: 70px 0;
    background: var(--bg-secondary);
    border-top: 1px solid var(--border);
    border-bottom: 1px solid var(--border);
}

.section-head {
    display: flex;
    align-items: flex-end;
    justify-content: space-between;
    gap: 20px;
    margin-bottom: 36px;
    flex-wrap: wrap;
}

.section-head .sec-label {
    font-size: 0.8rem;
    font-weight: 700;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    color: var(--accent);
    margin-bottom: 8px;
    display: block;
}

.section-head h2 {
    font-size: clamp(1.5rem, 2.5vw, 2rem);
    font-weight: 800;
    color: #f1f5f9;
    line-height: 1.3;
    letter-spacing: -0.02em;
}

.section-head h2 small {
    display: block;
    color: var(--text-muted);
    font-size: 0.9rem;
    font-weight: 500;
    margin-top: 6px;
    letter-spacing: 0;
}

.related-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
}

.related-card {
    border-radius: 16px;
    overflow: hidden;
    background: var(--bg-card);
    border: 1px solid var(--border);
    transition: all 0.3s ease;
    display: flex;
    flex-direction: column;
}

.related-card:hover {
    transform: translateY(-6px);
    border-color: rgba(230, 69, 69, 0.35);
    box-shadow: var(--shadow);
}

.related-card .rc-img {
    height: 150px;
    background-size: cover;
    background-position: center;
    position: relative;
    overflow: hidden;
}

.related-card .rc-img::before {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(180deg, rgba(0, 0, 0, 0.1), rgba(10, 14, 23, 0.5));
}

.related-card .rc-img .rc-cat {
    position: absolute;
    left: 12px;
    top: 12px;
    background: rgba(230, 69, 69, 0.88);
    color: #fff;
    font-size: 0.72rem;
    font-weight: 600;
    padding: 4px 10px;
    border-radius: 999px;
    backdrop-filter: blur(6px);
}

.related-card .rc-body {
    padding: 18px;
    flex: 1;
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.related-card .rc-body h3 {
    font-size: 0.95rem;
    font-weight: 600;
    color: #e2e8f0;
    line-height: 1.55;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.related-card .rc-body h3:hover {
    color: #fff;
}

.related-card .rc-foot {
    display: flex;
    align-items: center;
    justify-content: space-between;
    font-size: 0.78rem;
    color: var(--text-muted);
    border-top: 1px solid var(--border);
    padding-top: 12px;
}

/* ===== FAQ ===== */
.faq-section {
    padding: 80px 0;
    background: var(--bg-primary);
}

.faq-wrap {
    max-width: 820px;
    margin: 0 auto;
}

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

.faq-item:hover {
    border-color: var(--border-light);
    background: #182234;
}

.faq-item details {
    padding: 20px 24px;
}

.faq-item summary {
    display: flex;
    align-items: center;
    gap: 12px;
    cursor: pointer;
    font-weight: 600;
    font-size: 0.95rem;
    color: #e2e8f0;
    list-style: none;
    position: relative;
    padding-right: 36px;
    transition: color 0.3s;
}

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

.faq-item summary:hover {
    color: #fff;
}

.faq-item summary .faq-num {
    width: 28px;
    height: 28px;
    border-radius: 8px;
    background: rgba(230, 69, 69, 0.15);
    color: var(--accent);
    display: grid;
    place-items: center;
    font-size: 0.75rem;
    font-weight: 700;
    flex-shrink: 0;
}

.faq-item summary::after {
    content: '\f078';
    font-family: 'Font Awesome 6 Free';
    font-weight: 900;
    position: absolute;
    right: 0;
    top: 50%;
    transform: translateY(-50%);
    color: var(--text-muted);
    font-size: 0.8rem;
    transition: transform 0.3s ease;
}

.faq-item details[open] summary::after {
    transform: translateY(-50%) rotate(180deg);
    color: var(--accent);
}

.faq-item .faq-body {
    padding-top: 16px;
    margin-top: 16px;
    border-top: 1px solid var(--border);
    color: var(--text-secondary);
    font-size: 0.9rem;
    line-height: 1.85;
}

/* ===== CTA ===== */
.cta-section {
    padding: 90px 0;
    background: url('/assets/images/backpic/back-2.png') center center / cover no-repeat fixed;
    position: relative;
}

.cta-section::before {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(90deg, rgba(6, 10, 18, 0.92) 0%, rgba(6, 10, 18, 0.7) 60%, rgba(6, 10, 18, 0.8) 100%);
}

.cta-inner {
    position: relative;
    z-index: 2;
    max-width: 760px;
}

.cta-inner .sec-label {
    color: var(--accent-secondary);
    font-size: 0.85rem;
    font-weight: 700;
    letter-spacing: 0.14em;
    text-transform: uppercase;
    margin-bottom: 12px;
    display: block;
}

.cta-inner h2 {
    font-size: clamp(1.8rem, 3.5vw, 2.6rem);
    font-weight: 800;
    color: #fff;
    line-height: 1.3;
    margin-bottom: 16px;
    letter-spacing: -0.02em;
}

.cta-inner p {
    color: #cbd5e1;
    font-size: 1.02rem;
    margin-bottom: 30px;
    max-width: 540px;
}

.cta-buttons {
    display: flex;
    align-items: center;
    gap: 14px;
    flex-wrap: wrap;
}

/* ===== Footer ===== */
.site-footer {
    background: var(--bg-deep);
    border-top: 1px solid var(--border);
    padding: 70px 0 24px;
}

.footer-grid {
    display: grid;
    grid-template-columns: 1.6fr 1fr 1fr;
    gap: 50px;
    margin-bottom: 50px;
}

.footer-brand p {
    color: var(--text-muted);
    font-size: 0.9rem;
    line-height: 1.85;
    margin-top: 16px;
    max-width: 360px;
}

.footer-col {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.footer-col h4 {
    font-size: 0.85rem;
    font-weight: 700;
    color: #f1f5f9;
    margin-bottom: 10px;
    letter-spacing: 0.06em;
    text-transform: uppercase;
    position: relative;
    padding-bottom: 12px;
}

.footer-col h4::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 28px;
    height: 2px;
    background: var(--accent);
    border-radius: 2px;
}

.footer-col a {
    color: var(--text-muted);
    font-size: 0.9rem;
    display: inline-flex;
    align-items: center;
    gap: 8px;
    transition: all 0.3s;
}

.footer-col a:hover {
    color: #fff;
    transform: translateX(4px);
}

.footer-col a i {
    font-size: 0.75rem;
    color: var(--accent);
}

.footer-bottom {
    border-top: 1px solid var(--border);
    padding-top: 24px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
    flex-wrap: wrap;
    font-size: 0.82rem;
    color: var(--text-muted);
}

.footer-bottom a {
    color: var(--text-muted);
    text-decoration: underline;
    text-underline-offset: 4px;
}

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

/* ===== Section Divider ===== */
.fade-in-up {
    opacity: 0;
    transform: translateY(30px);
    animation: fadeUp 0.7s ease forwards;
}

@keyframes fadeUp {
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* ===== Responsive ===== */
@media (max-width: 1024px) {
    .related-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    .footer-grid {
        grid-template-columns: 1fr 1fr;
        gap: 36px;
    }
    .nav-menu {
        gap: 2px;
    }
    .nav-link {
        padding: 8px 12px;
        font-size: 0.85rem;
    }
    .header-inner {
        gap: 16px;
    }
}

@media (max-width: 768px) {
    .header-inner {
        height: 64px;
    }
    .header-actions .btn-primary {
        display: none;
    }
    .menu-toggle {
        display: flex;
    }
    .nav-menu {
        position: fixed;
        top: 64px;
        left: 0;
        right: 0;
        background: rgba(10, 14, 23, 0.98);
        flex-direction: column;
        align-items: stretch;
        padding: 20px;
        gap: 6px;
        border-bottom: 1px solid var(--border);
        box-shadow: var(--shadow);
        transform: translateY(-110%);
        opacity: 0;
        transition: all 0.4s cubic-bezier(0.23, 1, 0.32, 1);
        max-height: calc(100vh - 64px);
        overflow-y: auto;
        z-index: 999;
    }
    .nav-menu.open {
        transform: translateY(0);
        opacity: 1;
    }
    .nav-link {
        padding: 14px 16px;
        font-size: 1rem;
        border-bottom: 1px solid rgba(30, 41, 59, 0.5);
        border-radius: 0;
    }
    .nav-item {
        width: 100%;
    }
    .mega-panel {
        position: static;
        transform: none;
        width: 100%;
        opacity: 1;
        visibility: visible;
        transform: none;
        box-shadow: none;
        margin: 6px 0;
        border-radius: 12px;
        display: none;
    }
    .nav-item:hover .mega-panel,
    .nav-item:focus-within .mega-panel {
        display: block;
    }
    .mega-panel::before {
        display: none;
    }
    .article-hero {
        padding: 50px 0 80px;
    }
    .content-section {
        padding: 50px 0 30px;
    }
    .related-section,
    .faq-section,
    .cta-section {
        padding: 60px 0;
    }
    .footer-grid {
        grid-template-columns: 1fr;
        gap: 32px;
    }
    .footer-bottom {
        flex-direction: column;
        text-align: center;
        justify-content: center;
    }
    .cta-buttons {
        flex-direction: column;
        align-items: flex-start;
    }
    .cta-buttons .btn {
        width: 100%;
    }
}

@media (max-width: 520px) {
    .container {
        padding: 0 18px;
    }
    .related-grid {
        grid-template-columns: 1fr;
    }
    .footer-grid {
        gap: 28px;
    }
    .article-hero h1 {
        font-size: 1.6rem;
    }
    .hero-desc {
        font-size: 0.95rem;
    }
    .logo {
        font-size: 1rem;
    }
    .logo-mark {
        width: 34px;
        height: 34px;
        font-size: 0.85rem;
    }
    .article-card {
        padding: 20px;
    }
    .article-body {
        font-size: 0.95rem;
    }
    .sidebar-card {
        padding: 20px;
    }
    .hero-meta {
        gap: 12px;
        font-size: 0.8rem;
    }
}

/* roulang page: category2 */
:root {
            --primary: #0f172a;
            --accent: #e11d48;
            --aux: #38bdf8;
            --darkbg: #0b1120;
            --lightbg: #f8fafc;
            --text-main: #1e293b;
            --text-muted: #64748b;
            --border: #e2e8f0;
            --radius: 16px;
            --shadow: 0 4px 24px rgba(2, 6, 23, 0.08);
            --shadow-hover: 0 12px 32px rgba(2, 6, 23, 0.14);
        }
        
        * { box-sizing: border-box; margin: 0; padding: 0; }
        
        body {
            font-family: 'Inter', 'Noto Sans SC', system-ui, -apple-system, 'PingFang SC', 'Microsoft YaHei', sans-serif;
            background: var(--lightbg);
            color: var(--text-main);
            line-height: 1.7;
            -webkit-font-smoothing: antialiased;
        }
        
        a { text-decoration: none; color: inherit; transition: all 0.2s ease; }
        img { max-width: 100%; height: auto; display: block; }
        button, input { font-family: inherit; }
        
        .container-custom {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 24px;
        }
        
        .text-gradient {
            background: linear-gradient(135deg, #38bdf8, #818cf8);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        
        .hero-backdrop {
            background-image: linear-gradient(rgba(2, 6, 23, 0.85), rgba(2, 6, 23, 0.9)), url('/assets/images/backpic/back-1.png');
            background-size: cover;
            background-position: center;
            background-attachment: fixed;
        }
        
        .dark-panel {
            background: linear-gradient(145deg, #0b1120 0%, #111827 100%);
            border: 1px solid rgba(56, 189, 248, 0.15);
        }
        
        .red-dot::before {
            content: '';
            display: inline-block;
            width: 8px;
            height: 8px;
            border-radius: 50%;
            background: var(--accent);
            margin-right: 8px;
            box-shadow: 0 0 0 4px rgba(225, 29, 72, 0.12);
        }
        
        .card-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }
        
        .icon-box {
            width: 48px;
            height: 48px;
            display: flex;
            align-items: center;
            justify-content: center;
            border-radius: 12px;
            font-size: 20px;
            flex-shrink: 0;
        }
        
        .step-line {
            position: relative;
        }
        
        .step-line:not(:last-child)::before {
            content: '';
            position: absolute;
            left: 23px;
            top: 56px;
            bottom: -12px;
            width: 2px;
            background: linear-gradient(to bottom, rgba(56, 189, 248, 0.6), rgba(56, 189, 248, 0.1));
        }
        
        .faq-item summary::-webkit-details-marker { display: none; }
        .faq-item summary { cursor: pointer; list-style: none; }
        .faq-item summary::after {
            content: '+';
            float: right;
            font-size: 24px;
            font-weight: 300;
            color: var(--accent);
            transition: transform 0.3s ease;
            line-height: 1;
        }
        .faq-item[open] summary::after {
            transform: rotate(45deg);
        }
        
        .btn-primary {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: var(--accent);
            color: #fff;
            padding: 12px 32px;
            border-radius: 12px;
            font-weight: 600;
            border: none;
            cursor: pointer;
            transition: all 0.3s ease;
            box-shadow: 0 4px 16px rgba(225, 29, 72, 0.3);
            font-size: 15px;
        }
        .btn-primary:hover {
            transform: translateY(-2px);
            box-shadow: 0 8px 24px rgba(225, 29, 72, 0.4);
        }
        .btn-primary:focus-visible {
            outline: 2px solid #fff;
            outline-offset: 2px;
        }
        
        .btn-ghost {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: transparent;
            color: #e2e8f0;
            padding: 12px 32px;
            border-radius: 12px;
            font-weight: 600;
            border: 1px solid rgba(226, 232, 240, 0.3);
            cursor: pointer;
            transition: all 0.3s ease;
            font-size: 15px;
        }
        .btn-ghost:hover {
            border-color: var(--aux);
            color: var(--aux);
            transform: translateY(-2px);
            box-shadow: 0 0 20px rgba(56, 189, 248, 0.15);
        }
        .btn-ghost:focus-visible {
            outline: 2px solid var(--aux);
            outline-offset: 2px;
        }
        
        /* 顶部导航 */
        .site-header {
            background: rgba(2, 6, 23, 0.92);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border-bottom: 1px solid rgba(56, 189, 248, 0.12);
            position: sticky;
            top: 0;
            z-index: 100;
        }
        
        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 72px;
        }
        
        .logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 20px;
            font-weight: 700;
            color: #fff;
            letter-spacing: 0.02em;
            white-space: nowrap;
        }
        
        .logo-mark {
            width: 36px;
            height: 36px;
            border-radius: 10px;
            display: flex;
            align-items: center;
            justify-content: center;
            background: linear-gradient(135deg, #e11d48, #be123c);
            color: #fff;
            font-size: 16px;
            box-shadow: 0 4px 12px rgba(225, 29, 72, 0.35);
        }
        
        .nav-menu {
            display: flex;
            align-items: center;
            gap: 24px;
        }
        
        .nav-link {
            color: rgba(226, 232, 240, 0.75);
            font-size: 15px;
            font-weight: 500;
            padding: 10px 4px;
            position: relative;
            transition: color 0.3s;
            background: none;
            border: none;
            cursor: pointer;
            display: inline-flex;
            align-items: center;
            gap: 4px;
        }
        
        .nav-link::after {
            content: '';
            position: absolute;
            left: 0;
            bottom: 0;
            width: 0;
            height: 2px;
            background: var(--accent);
            transition: width 0.3s ease;
        }
        
        .nav-link:hover { color: #fff; }
        .nav-link:hover::after { width: 100%; }
        .nav-link.active { color: #fff; }
        .nav-link.active::after { width: 100%; }
        .nav-link:focus-visible { outline: 2px solid var(--aux); outline-offset: 2px; border-radius: 4px; }
        
        .nav-item { position: relative; }
        
        .mega-panel {
            position: absolute;
            top: 100%;
            left: 0;
            min-width: 340px;
            background: rgba(11, 17, 32, 0.98);
            backdrop-filter: blur(16px);
            border: 1px solid rgba(56, 189, 248, 0.15);
            border-radius: 16px;
            padding: 20px;
            opacity: 0;
            visibility: hidden;
            transform: translateY(12px);
            transition: all 0.3s ease;
            box-shadow: 0 24px 64px rgba(0, 0, 0, 0.5);
            z-index: 80;
        }
        
        .nav-item:hover .mega-panel,
        .nav-item:focus-within .mega-panel {
            opacity: 1;
            visibility: visible;
            transform: translateY(0);
        }
        
        .mega-panel .panel-title {
            color: var(--aux);
            font-size: 12px;
            font-weight: 600;
            text-transform: uppercase;
            letter-spacing: 0.1em;
            margin-bottom: 12px;
            padding-bottom: 8px;
            border-bottom: 1px solid rgba(56, 189, 248, 0.15);
        }
        
        .mega-panel a {
            display: flex;
            align-items: center;
            gap: 10px;
            color: rgba(226, 232, 240, 0.75);
            padding: 9px 12px;
            border-radius: 8px;
            font-size: 14px;
            transition: all 0.25s;
            white-space: nowrap;
        }
        
        .mega-panel a:hover {
            background: rgba(56, 189, 248, 0.1);
            color: var(--aux);
            padding-left: 16px;
        }
        
        .mega-panel a i {
            width: 16px;
            color: var(--accent);
            font-size: 14px;
        }
        
        .nav-toggle {
            display: none;
            background: none;
            border: none;
            color: #e2e8f0;
            font-size: 22px;
            cursor: pointer;
            padding: 8px;
        }
        
        /* 页脚 */
        .site-footer {
            background: #0b1120;
            border-top: 1px solid rgba(56, 189, 248, 0.1);
            padding: 60px 0 24px;
        }
        
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr;
            gap: 40px;
            padding-bottom: 40px;
            border-bottom: 1px solid rgba(56, 189, 248, 0.08);
        }
        
        .footer-brand p {
            color: rgba(226, 232, 240, 0.55);
            font-size: 14px;
            line-height: 1.8;
            margin-top: 14px;
            max-width: 400px;
        }
        
        .footer-col h4 {
            color: #fff;
            font-size: 15px;
            font-weight: 600;
            margin-bottom: 16px;
        }
        
        .footer-col a {
            display: block;
            color: rgba(226, 232, 240, 0.55);
            font-size: 14px;
            padding: 4px 0;
            transition: all 0.3s;
        }
        
        .footer-col a:hover {
            color: var(--aux);
            padding-left: 4px;
        }
        
        .footer-bottom {
            text-align: center;
            padding-top: 24px;
        }
        
        .footer-bottom p {
            color: rgba(226, 232, 240, 0.4);
            font-size: 13px;
        }
        
        /* 卡片通用 */
        .card {
            background: #fff;
            border-radius: var(--radius);
            border: 1px solid var(--border);
            box-shadow: var(--shadow);
            transition: all 0.3s ease;
            padding: 28px;
        }
        
        .card-hover:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-hover);
            border-color: rgba(56, 189, 248, 0.3);
        }
        
        .tag {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 5px 14px;
            border-radius: 999px;
            font-size: 12px;
            font-weight: 500;
            letter-spacing: 0.02em;
        }
        
        .tag-red {
            background: rgba(225, 29, 72, 0.08);
            color: var(--accent);
            border: 1px solid rgba(225, 29, 72, 0.2);
        }
        
        .tag-blue {
            background: rgba(56, 189, 248, 0.08);
            color: #0284c7;
            border: 1px solid rgba(56, 189, 248, 0.2);
        }
        
        .tag-gray {
            background: rgba(100, 116, 139, 0.08);
            color: var(--text-muted);
            border: 1px solid rgba(100, 116, 139, 0.15);
        }
        
        /* 状态条 */
        .status-bar {
            display: flex;
            flex-wrap: wrap;
            gap: 16px;
        }
        
        .status-item {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 13px;
            color: rgba(226, 232, 240, 0.7);
        }
        
        .status-dot {
            width: 6px;
            height: 6px;
            border-radius: 50%;
            background: #22c55e;
            box-shadow: 0 0 8px rgba(34, 197, 94, 0.5);
        }
        
        .status-dot.red {
            background: var(--accent);
            box-shadow: 0 0 8px rgba(225, 29, 72, 0.5);
        }
        
        .status-dot.blue {
            background: var(--aux);
            box-shadow: 0 0 8px rgba(56, 189, 248, 0.5);
        }
        
        /* Footer Logo 使用星空简称 */
        .footer-brand .logo {
            font-size: 18px;
        }
        
        /* 板块标题 */
        .section-label {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            font-size: 13px;
            font-weight: 600;
            letter-spacing: 0.08em;
            text-transform: uppercase;
            color: var(--accent);
            margin-bottom: 12px;
        }
        
        .section-title {
            font-size: 36px;
            font-weight: 800;
            color: #0f172a;
            line-height: 1.2;
            letter-spacing: -0.02em;
        }
        
        .section-subtitle {
            font-size: 16px;
            color: var(--text-muted);
            margin-top: 12px;
            max-width: 600px;
        }
        
        /* 响应式 */
        @media (max-width: 1024px) {
            .card-grid { grid-template-columns: repeat(2, 1fr); }
            .section-title { font-size: 30px; }
            .container-custom { padding: 0 20px; }
        }
        
        @media (max-width: 768px) {
            .nav-toggle { display: block; }
            .nav-menu {
                display: none;
                flex-direction: column;
                align-items: stretch;
                gap: 4px;
                padding: 16px 0;
                position: absolute;
                top: 72px;
                left: 0;
                right: 0;
                background: rgba(2, 6, 23, 0.98);
                border-bottom: 1px solid rgba(56, 189, 248, 0.15);
                padding-left: 24px;
                padding-right: 24px;
            }
            .nav-menu.open { display: flex; }
            .nav-link { padding: 12px 0; border-bottom: 1px solid rgba(56,189,248,0.08); }
            .nav-link::after { display: none; }
            .nav-link.active { color: var(--aux); }
            .nav-item { width: 100%; }
            .mega-panel {
                position: static;
                opacity: 1;
                visibility: visible;
                transform: none;
                max-height: 0;
                overflow: hidden;
                padding: 0 12px;
                margin: 0;
                border: none;
                box-shadow: none;
                background: transparent;
                min-width: 0;
                transition: max-height 0.35s ease, padding 0.3s ease;
            }
            .nav-item.open .mega-panel {
                max-height: 300px;
                padding: 12px;
            }
            .footer-grid { grid-template-columns: 1fr; gap: 24px; }
            .section-title { font-size: 26px; }
        }
        
        @media (max-width: 520px) {
            .card-grid { grid-template-columns: 1fr; }
            .container-custom { padding: 0 16px; }
            .btn-primary, .btn-ghost { width: 100%; justify-content: center; }
            .footer-grid { grid-template-columns: 1fr; }
        }