/* roulang page: index */
:root {
            --primary: #1e3a5f;
            --primary-light: #2a5298;
            --primary-dark: #0f2440;
            --accent: #f0b429;
            --accent-light: #fcd34d;
            --accent-dark: #d4941a;
            --bg-light: #f8fafc;
            --bg-white: #ffffff;
            --text-dark: #0f172a;
            --text-body: #334155;
            --text-muted: #64748b;
            --border-light: #e2e8f0;
            --radius: 12px;
            --radius-sm: 8px;
            --shadow-sm: 0 1px 3px rgba(0,0,0,0.08);
            --shadow-md: 0 4px 20px rgba(0,0,0,0.10);
            --shadow-lg: 0 10px 40px rgba(0,0,0,0.12);
            --transition: all 0.3s ease;
        }

        * { margin:0; padding:0; box-sizing:border-box; }
        html { scroll-behavior: smooth; }
        body {
            font-family: 'Inter', system-ui, -apple-system, 'Segoe UI', Roboto, 'Helvetica Neue', sans-serif;
            background: var(--bg-light);
            color: var(--text-body);
            line-height: 1.7;
            -webkit-font-smoothing: antialiased;
        }
        a { color: inherit; text-decoration: none; transition: var(--transition); }
        img { max-width: 100%; height: auto; display: block; }
        button, input, textarea { font-family: inherit; font-size: inherit; outline: none; border: none; }
        ul { list-style: none; }

        .container { max-width: 1200px; margin: 0 auto; padding: 0 24px; }
        .section-padding { padding: 80px 0; }
        .section-title { font-size: 2rem; font-weight: 700; color: var(--text-dark); margin-bottom: 0.75rem; letter-spacing: -0.02em; }
        .section-subtitle { font-size: 1.1rem; color: var(--text-muted); max-width: 640px; margin-bottom: 2.5rem; line-height: 1.8; }
        .badge {
            display: inline-block; padding: 4px 14px; border-radius: 999px; font-size: 0.8rem; font-weight: 600;
            background: var(--accent); color: var(--text-dark); letter-spacing: 0.02em;
        }

        /* ===== Header / Nav ===== */
        .site-header {
            position: sticky; top: 0; z-index: 50;
            background: rgba(255,255,255,0.92); backdrop-filter: blur(16px);
            border-bottom: 1px solid var(--border-light);
            box-shadow: 0 1px 4px rgba(0,0,0,0.04);
        }
        .nav-wrap { display: flex; align-items: center; justify-content: space-between; height: 68px; }
        .logo { font-size: 1.35rem; font-weight: 800; color: var(--primary); letter-spacing: -0.02em; }
        .logo span { color: var(--accent); }
        .nav-list { display: flex; align-items: center; gap: 6px; }
        .nav-list a {
            display: flex; align-items: center; gap: 6px;
            padding: 8px 18px; border-radius: 999px; font-size: 0.95rem; font-weight: 500;
            color: var(--text-body); transition: var(--transition); white-space: nowrap;
        }
        .nav-list a i { font-size: 0.85rem; opacity: 0.7; }
        .nav-list a:hover { background: rgba(30,58,95,0.08); color: var(--primary); }
        .nav-list a.active { background: var(--primary); color: #fff; box-shadow: var(--shadow-sm); }
        .nav-list a.active i { opacity: 1; }
        .nav-cta {
            display: inline-flex; align-items: center; gap: 8px;
            padding: 10px 28px; border-radius: 999px; font-weight: 600; font-size: 0.95rem;
            background: var(--accent); color: var(--text-dark); transition: var(--transition);
            box-shadow: 0 2px 8px rgba(240,180,41,0.35);
        }
        .nav-cta:hover { background: var(--accent-dark); transform: translateY(-1px); box-shadow: 0 4px 16px rgba(240,180,41,0.45); }
        .mobile-toggle { display: none; background: none; font-size: 1.5rem; color: var(--text-dark); cursor: pointer; padding: 4px; }

        /* ===== Hero ===== */
        .hero {
            background: linear-gradient(135deg, var(--primary-dark) 0%, var(--primary) 50%, var(--primary-light) 100%);
            color: #fff; padding: 100px 0 80px; position: relative; overflow: hidden;
        }
        .hero::after {
            content: ''; position: absolute; inset: 0;
            background: url("data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none' fill-rule='evenodd'%3E%3Cg fill='%23ffffff' fill-opacity='0.04'%3E%3Cpath d='M36 34v-4h-2v4h-4v2h4v4h2v-4h4v-2h-4zm0-30V0h-2v4h-4v2h4v4h2V6h4V4h-4zM6 34v-4H4v4H0v2h4v4h2v-4h4v-2H6zM6 4V0H4v4H0v2h4v4h2V6h4V4H6z'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E");
            pointer-events: none;
        }
        .hero .container { position: relative; z-index: 1; }
        .hero-badge { display: inline-block; padding: 6px 20px; border-radius: 999px; background: rgba(255,255,255,0.12); color: var(--accent-light); font-size: 0.85rem; font-weight: 600; margin-bottom: 20px; backdrop-filter: blur(4px); border: 1px solid rgba(255,255,255,0.08); }
        .hero h1 { font-size: 3.2rem; font-weight: 800; line-height: 1.2; letter-spacing: -0.03em; margin-bottom: 20px; }
        .hero h1 span { color: var(--accent); }
        .hero p { font-size: 1.2rem; opacity: 0.9; max-width: 560px; margin-bottom: 32px; line-height: 1.8; }
        .hero-actions { display: flex; flex-wrap: wrap; gap: 16px; }
        .hero-actions .btn-primary {
            display: inline-flex; align-items: center; gap: 10px;
            padding: 14px 36px; border-radius: 999px; font-weight: 700; font-size: 1.05rem;
            background: var(--accent); color: var(--text-dark); transition: var(--transition);
            box-shadow: 0 4px 20px rgba(240,180,41,0.4);
        }
        .hero-actions .btn-primary:hover { background: var(--accent-light); transform: translateY(-2px); box-shadow: 0 8px 30px rgba(240,180,41,0.5); }
        .hero-actions .btn-outline {
            display: inline-flex; align-items: center; gap: 10px;
            padding: 14px 36px; border-radius: 999px; font-weight: 600; font-size: 1.05rem;
            border: 2px solid rgba(255,255,255,0.3); color: #fff; transition: var(--transition);
        }
        .hero-actions .btn-outline:hover { border-color: var(--accent); color: var(--accent); background: rgba(255,255,255,0.06); }

        /* ===== Cards ===== */
        .card {
            background: var(--bg-white); border-radius: var(--radius); padding: 28px 24px;
            box-shadow: var(--shadow-sm); border: 1px solid var(--border-light);
            transition: var(--transition); height: 100%;
        }
        .card:hover { box-shadow: var(--shadow-md); transform: translateY(-3px); border-color: transparent; }
        .card-icon { width: 52px; height: 52px; border-radius: var(--radius-sm); display: flex; align-items: center; justify-content: center; font-size: 1.6rem; color: #fff; margin-bottom: 16px; }
        .card h3 { font-size: 1.2rem; font-weight: 700; color: var(--text-dark); margin-bottom: 8px; }
        .card p { color: var(--text-muted); font-size: 0.95rem; line-height: 1.7; }
        .card-tag { display: inline-block; padding: 2px 12px; border-radius: 999px; font-size: 0.75rem; font-weight: 600; background: var(--bg-light); color: var(--text-muted); margin-right: 4px; margin-bottom: 4px; }

        /* ===== Stats ===== */
        .stats-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; }
        .stat-item { text-align: center; padding: 32px 16px; background: rgba(255,255,255,0.06); border-radius: var(--radius); border: 1px solid rgba(255,255,255,0.08); backdrop-filter: blur(4px); }
        .stat-number { font-size: 2.8rem; font-weight: 800; color: var(--accent); line-height: 1.2; }
        .stat-label { font-size: 0.95rem; opacity: 0.75; margin-top: 6px; }

        /* ===== Steps ===== */
        .step-card { display: flex; gap: 20px; align-items: flex-start; padding: 24px; background: var(--bg-white); border-radius: var(--radius); box-shadow: var(--shadow-sm); border: 1px solid var(--border-light); transition: var(--transition); }
        .step-card:hover { box-shadow: var(--shadow-md); }
        .step-num { flex-shrink: 0; width: 44px; height: 44px; border-radius: 50%; background: var(--primary); color: #fff; display: flex; align-items: center; justify-content: center; font-weight: 700; font-size: 1.1rem; }
        .step-card h4 { font-weight: 700; color: var(--text-dark); margin-bottom: 4px; }
        .step-card p { color: var(--text-muted); font-size: 0.95rem; }

        /* ===== FAQ ===== */
        .faq-item { border-bottom: 1px solid var(--border-light); padding: 20px 0; cursor: pointer; }
        .faq-question { display: flex; justify-content: space-between; align-items: center; font-weight: 600; color: var(--text-dark); font-size: 1.05rem; }
        .faq-question i { color: var(--text-muted); transition: var(--transition); font-size: 1.1rem; }
        .faq-item.open .faq-question i { transform: rotate(180deg); color: var(--accent); }
        .faq-answer { max-height: 0; overflow: hidden; transition: max-height 0.4s ease, padding 0.3s ease; padding-top: 0; color: var(--text-muted); line-height: 1.8; }
        .faq-item.open .faq-answer { max-height: 300px; padding-top: 14px; }

        /* ===== CTA ===== */
        .cta-section { background: linear-gradient(135deg, var(--primary) 0%, var(--primary-light) 100%); color: #fff; border-radius: var(--radius); padding: 60px 48px; text-align: center; position: relative; overflow: hidden; }
        .cta-section::before { content: ''; position: absolute; inset: 0; background: url("data:image/svg+xml,%3Csvg width='80' height='80' viewBox='0 0 80 80' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none' fill-rule='evenodd'%3E%3Cg fill='%23ffffff' fill-opacity='0.04'%3E%3Cpath d='M50 50v-5h-5v5h-5v5h5v5h5v-5h5v-5h-5zm0-40V5h-5v5h-5v5h5v5h5V15h5v-5h-5zM10 50v-5H5v5H0v5h5v5h5v-5h5v-5H10zM10 10V5H5v5H0v5h5v5h5V15h5v-5H10z'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E"); pointer-events: none; }
        .cta-section * { position: relative; z-index: 1; }
        .cta-section h2 { font-size: 2.2rem; font-weight: 800; margin-bottom: 16px; }
        .cta-section p { font-size: 1.1rem; opacity: 0.9; max-width: 520px; margin: 0 auto 28px; }
        .cta-btn { display: inline-flex; align-items: center; gap: 10px; padding: 14px 40px; border-radius: 999px; font-weight: 700; font-size: 1.05rem; background: var(--accent); color: var(--text-dark); transition: var(--transition); box-shadow: 0 4px 20px rgba(240,180,41,0.35); }
        .cta-btn:hover { background: var(--accent-light); transform: translateY(-2px); box-shadow: 0 8px 30px rgba(240,180,41,0.45); }

        /* ===== Footer ===== */
        .site-footer { background: var(--primary-dark); color: rgba(255,255,255,0.8); padding: 48px 0 28px; }
        .footer-grid { display: grid; grid-template-columns: 2fr 1fr 1fr 1fr; gap: 40px; margin-bottom: 32px; }
        .footer-brand .logo { color: #fff; font-size: 1.4rem; margin-bottom: 12px; display: inline-block; }
        .footer-brand .logo span { color: var(--accent); }
        .footer-brand p { font-size: 0.95rem; opacity: 0.7; max-width: 320px; line-height: 1.8; }
        .footer-col h5 { color: #fff; font-weight: 700; font-size: 1rem; margin-bottom: 16px; }
        .footer-col a { display: block; padding: 4px 0; font-size: 0.95rem; opacity: 0.7; transition: var(--transition); }
        .footer-col a:hover { opacity: 1; color: var(--accent); padding-left: 4px; }
        .footer-bottom { border-top: 1px solid rgba(255,255,255,0.08); padding-top: 20px; display: flex; justify-content: space-between; align-items: center; flex-wrap: wrap; gap: 12px; font-size: 0.9rem; opacity: 0.6; }
        .footer-socials { display: flex; gap: 12px; }
        .footer-socials a { width: 38px; height: 38px; border-radius: 50%; background: rgba(255,255,255,0.08); display: flex; align-items: center; justify-content: center; color: #fff; font-size: 1rem; transition: var(--transition); }
        .footer-socials a:hover { background: var(--accent); color: var(--text-dark); }

        /* ===== News / Post List ===== */
        .post-item { display: flex; gap: 20px; padding: 20px 0; border-bottom: 1px solid var(--border-light); transition: var(--transition); }
        .post-item:last-child { border-bottom: none; }
        .post-item:hover { padding-left: 8px; }
        .post-meta { display: flex; gap: 12px; align-items: center; font-size: 0.85rem; color: var(--text-muted); margin-bottom: 6px; flex-wrap: wrap; }
        .post-meta .cat { display: inline-block; padding: 2px 12px; border-radius: 999px; background: var(--bg-light); font-weight: 600; color: var(--primary); font-size: 0.75rem; }
        .post-item h4 { font-size: 1.1rem; font-weight: 700; color: var(--text-dark); margin-bottom: 6px; transition: var(--transition); }
        .post-item:hover h4 { color: var(--primary-light); }
        .post-item p { color: var(--text-muted); font-size: 0.95rem; line-height: 1.7; margin-bottom: 4px; }
        .post-item .time { font-size: 0.8rem; color: var(--text-muted); }

        /* ===== Responsive ===== */
        @media (max-width: 1024px) {
            .footer-grid { grid-template-columns: 1fr 1fr; }
            .stats-grid { grid-template-columns: repeat(2, 1fr); }
        }
        @media (max-width: 768px) {
            .section-padding { padding: 48px 0; }
            .section-title { font-size: 1.6rem; }
            .hero h1 { font-size: 2.2rem; }
            .hero p { font-size: 1rem; }
            .hero { padding: 60px 0 48px; }
            .nav-list { display: none; }
            .nav-list.mobile-open { display: flex; flex-direction: column; position: absolute; top: 68px; left: 0; right: 0; background: rgba(255,255,255,0.98); backdrop-filter: blur(16px); padding: 16px 24px; border-bottom: 1px solid var(--border-light); box-shadow: var(--shadow-md); gap: 4px; }
            .nav-list a { padding: 12px 20px; border-radius: var(--radius-sm); width: 100%; }
            .nav-list a.active { background: var(--primary); color: #fff; }
            .mobile-toggle { display: block; }
            .nav-cta { display: none; }
            .nav-list.mobile-open + .nav-cta { display: flex; margin-top: 8px; }
            .stats-grid { grid-template-columns: repeat(2, 1fr); gap: 16px; }
            .stat-number { font-size: 2rem; }
            .cta-section { padding: 40px 24px; }
            .cta-section h2 { font-size: 1.6rem; }
            .footer-grid { grid-template-columns: 1fr; gap: 24px; }
            .footer-bottom { flex-direction: column; text-align: center; }
            .post-item { flex-direction: column; gap: 12px; }
            .hero-actions .btn-primary, .hero-actions .btn-outline { width: 100%; justify-content: center; }
        }
        @media (max-width: 520px) {
            .container { padding: 0 16px; }
            .hero h1 { font-size: 1.8rem; }
            .stats-grid { grid-template-columns: 1fr 1fr; gap: 12px; }
            .stat-item { padding: 20px 12px; }
            .stat-number { font-size: 1.6rem; }
            .card { padding: 20px 16px; }
            .step-card { flex-direction: column; gap: 12px; }
            .step-num { width: 36px; height: 36px; font-size: 0.95rem; }
        }

        /* ===== Utility ===== */
        .text-accent { color: var(--accent); }
        .bg-primary { background: var(--primary); }
        .text-primary { color: var(--primary); }
        .gap-4 { gap: 1rem; }
        .gap-6 { gap: 1.5rem; }
        .grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
        .grid-2 { display: grid; grid-template-columns: repeat(2, 1fr); gap: 24px; }
        @media (max-width: 768px) {
            .grid-3 { grid-template-columns: 1fr; }
            .grid-2 { grid-template-columns: 1fr; }
        }

        .empty-msg { text-align: center; padding: 32px 16px; color: var(--text-muted); font-size: 1rem; background: var(--bg-white); border-radius: var(--radius); border: 1px dashed var(--border-light); }

/* roulang page: article */
:root {
            --primary: #1e3a5f;
            --primary-light: #2a5298;
            --primary-dark: #0f2440;
            --accent: #f4a261;
            --accent-light: #f8c48a;
            --bg-light: #f8fafc;
            --bg-card: #ffffff;
            --text-primary: #1a202c;
            --text-secondary: #4a5568;
            --text-muted: #a0aec0;
            --border-light: #e2e8f0;
            --shadow-sm: 0 1px 3px rgba(0,0,0,0.06);
            --shadow-md: 0 4px 20px rgba(0,0,0,0.08);
            --shadow-lg: 0 12px 40px rgba(0,0,0,0.12);
            --radius-sm: 8px;
            --radius-md: 14px;
            --radius-lg: 20px;
            --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
        }
        * { margin: 0; padding: 0; box-sizing: border-box; }
        html { scroll-behavior: smooth; }
        body {
            font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Noto Sans SC', sans-serif;
            background: var(--bg-light);
            color: var(--text-primary);
            line-height: 1.7;
            -webkit-font-smoothing: antialiased;
        }
        img { max-width: 100%; height: auto; display: block; border-radius: var(--radius-sm); }
        a { color: var(--primary); text-decoration: none; transition: var(--transition); }
        a:hover { color: var(--primary-light); }
        .container { max-width: 1200px; margin: 0 auto; padding: 0 24px; }
        .container-narrow { max-width: 860px; margin: 0 auto; padding: 0 24px; }

        /* Header & Nav */
        .site-header {
            background: var(--bg-card);
            border-bottom: 1px solid var(--border-light);
            position: sticky; top: 0; z-index: 100;
            box-shadow: var(--shadow-sm);
            backdrop-filter: blur(12px);
            background: rgba(255,255,255,0.96);
        }
        .header-inner {
            display: flex; align-items: center;
            justify-content: space-between;
            height: 68px;
            gap: 24px;
        }
        .logo {
            font-size: 1.5rem; font-weight: 800;
            color: var(--primary);
            letter-spacing: -0.5px;
            display: flex; align-items: center; gap: 2px;
            white-space: nowrap;
        }
        .logo span { color: var(--accent); }
        .nav-list {
            display: flex; list-style: none;
            gap: 8px; align-items: center;
        }
        .nav-list li a {
            padding: 8px 18px;
            border-radius: 40px;
            font-size: 0.95rem;
            font-weight: 500;
            color: var(--text-secondary);
            display: flex; align-items: center; gap: 8px;
            transition: var(--transition);
        }
        .nav-list li a i { font-size: 0.9rem; opacity: 0.7; }
        .nav-list li a:hover { background: var(--bg-light); color: var(--primary); }
        .nav-list li a.active {
            background: var(--primary);
            color: #fff;
            box-shadow: 0 4px 14px rgba(30,58,95,0.25);
        }
        .nav-list li a.active i { opacity: 1; }
        .hamburger {
            display: none; flex-direction: column; gap: 5px;
            background: none; border: none; cursor: pointer;
            padding: 6px; border-radius: var(--radius-sm);
        }
        .hamburger span {
            display: block; width: 26px; height: 3px;
            background: var(--text-primary);
            border-radius: 4px;
            transition: var(--transition);
        }
        .hamburger:hover span { background: var(--primary); }

        /* Article Hero */
        .article-hero {
            background: linear-gradient(135deg, var(--primary-dark) 0%, var(--primary) 60%, var(--primary-light) 100%);
            padding: 60px 0 48px;
            color: #fff;
        }
        .article-hero .breadcrumb {
            display: flex; flex-wrap: wrap; gap: 10px;
            align-items: center; font-size: 0.9rem;
            margin-bottom: 20px; opacity: 0.85;
        }
        .article-hero .breadcrumb a { color: rgba(255,255,255,0.8); }
        .article-hero .breadcrumb a:hover { color: #fff; }
        .article-hero .breadcrumb span { color: rgba(255,255,255,0.5); }
        .article-hero h1 {
            font-size: 2.4rem; font-weight: 800;
            line-height: 1.3; letter-spacing: -0.5px;
            margin-bottom: 16px;
            max-width: 800px;
        }
        .article-meta {
            display: flex; flex-wrap: wrap; gap: 20px;
            align-items: center; font-size: 0.95rem;
            color: rgba(255,255,255,0.8);
        }
        .article-meta .tag {
            display: inline-block;
            padding: 4px 14px;
            border-radius: 30px;
            background: rgba(255,255,255,0.15);
            color: #fff;
            font-size: 0.85rem;
            font-weight: 500;
        }
        .article-meta i { margin-right: 6px; }

        /* Article Body */
        .article-body-wrap {
            padding: 48px 0 60px;
        }
        .article-content {
            background: var(--bg-card);
            border-radius: var(--radius-lg);
            padding: 48px 52px;
            box-shadow: var(--shadow-md);
        }
        .article-content p {
            margin-bottom: 1.4em;
            font-size: 1.05rem;
            color: var(--text-secondary);
            line-height: 1.9;
        }
        .article-content h2, .article-content h3 {
            color: var(--text-primary);
            font-weight: 700;
            margin-top: 1.8em;
            margin-bottom: 0.6em;
            letter-spacing: -0.3px;
        }
        .article-content h2 { font-size: 1.6rem; }
        .article-content h3 { font-size: 1.25rem; }
        .article-content ul, .article-content ol {
            margin-bottom: 1.4em;
            padding-left: 1.8em;
            color: var(--text-secondary);
        }
        .article-content li { margin-bottom: 0.5em; }
        .article-content img {
            border-radius: var(--radius-md);
            margin: 1.8em 0;
            box-shadow: var(--shadow-sm);
        }
        .article-content blockquote {
            border-left: 4px solid var(--accent);
            padding: 16px 24px;
            margin: 1.8em 0;
            background: #fdf6ee;
            border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
            color: var(--text-secondary);
            font-style: normal;
        }
        .article-content blockquote p { margin-bottom: 0; }
        .article-content a { color: var(--primary-light); text-decoration: underline; }
        .article-content a:hover { color: var(--accent); }

        /* Not Found */
        .not-found-box {
            text-align: center;
            padding: 80px 20px;
        }
        .not-found-box i { font-size: 3.6rem; color: var(--text-muted); margin-bottom: 20px; }
        .not-found-box h2 { font-size: 1.8rem; margin-bottom: 12px; color: var(--text-primary); }
        .not-found-box p { color: var(--text-secondary); margin-bottom: 24px; }
        .not-found-box .btn-back {
            display: inline-flex; align-items: center; gap: 10px;
            padding: 12px 32px;
            background: var(--primary);
            color: #fff;
            border-radius: 40px;
            font-weight: 600;
            transition: var(--transition);
        }
        .not-found-box .btn-back:hover { background: var(--primary-light); transform: translateY(-2px); box-shadow: var(--shadow-md); }

        /* Footer */
        .site-footer {
            background: var(--primary-dark);
            color: rgba(255,255,255,0.85);
            padding: 60px 0 0;
            margin-top: 20px;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 40px;
            padding-bottom: 40px;
            border-bottom: 1px solid rgba(255,255,255,0.1);
        }
        .footer-brand .logo { color: #fff; font-size: 1.6rem; margin-bottom: 16px; display: inline-block; }
        .footer-brand p { font-size: 0.95rem; line-height: 1.7; opacity: 0.8; max-width: 360px; }
        .footer-col h5 {
            font-size: 1rem; font-weight: 700;
            margin-bottom: 18px;
            color: #fff;
            letter-spacing: 0.3px;
        }
        .footer-col a {
            display: block;
            color: rgba(255,255,255,0.7);
            font-size: 0.92rem;
            padding: 5px 0;
            transition: var(--transition);
        }
        .footer-col a:hover { color: var(--accent); padding-left: 4px; }
        .footer-socials {
            display: flex; gap: 14px; margin-top: 4px;
        }
        .footer-socials a {
            width: 42px; height: 42px;
            border-radius: 50%;
            background: rgba(255,255,255,0.1);
            display: flex; align-items: center; justify-content: center;
            color: #fff; font-size: 1.2rem;
            transition: var(--transition);
            padding: 0;
        }
        .footer-socials a:hover { background: var(--accent); color: #fff; transform: translateY(-3px); }
        .footer-bottom {
            display: flex; flex-wrap: wrap;
            justify-content: space-between;
            align-items: center;
            padding: 24px 0;
            font-size: 0.85rem;
            opacity: 0.7;
            gap: 12px;
        }

        /* Responsive */
        @media (max-width: 1024px) {
            .footer-grid { grid-template-columns: 1fr 1fr; }
        }
        @media (max-width: 768px) {
            .header-inner { height: 60px; }
            .nav-list { display: none; position: absolute; top: 60px; left: 0; right: 0; background: var(--bg-card); flex-direction: column; padding: 16px 24px 24px; border-bottom: 1px solid var(--border-light); box-shadow: var(--shadow-md); gap: 4px; }
            .nav-list.open { display: flex; }
            .nav-list li a { padding: 12px 18px; border-radius: 10px; }
            .hamburger { display: flex; }
            .article-hero h1 { font-size: 1.6rem; }
            .article-content { padding: 28px 20px; }
            .article-content p { font-size: 1rem; }
            .footer-grid { grid-template-columns: 1fr; gap: 28px; }
            .footer-bottom { flex-direction: column; text-align: center; }
        }
        @media (max-width: 520px) {
            .container { padding: 0 16px; }
            .article-hero { padding: 40px 0 32px; }
            .article-hero h1 { font-size: 1.35rem; }
            .article-meta { gap: 12px; font-size: 0.85rem; }
            .article-content { padding: 20px 16px; }
        }

/* roulang page: category1 */
:root {
            --primary: #e81c2e;
            --primary-dark: #c41524;
            --primary-light: #ff4d5a;
            --secondary: #1a1a2e;
            --accent: #f5a623;
            --bg-body: #f8f9fc;
            --bg-card: #ffffff;
            --bg-dark: #0f0f1a;
            --text-dark: #1e1e2f;
            --text-body: #3d3d4f;
            --text-light: #6b6b80;
            --text-white: #f0f0f5;
            --border: #e2e5ed;
            --radius: 16px;
            --radius-sm: 10px;
            --radius-lg: 24px;
            --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.04);
            --shadow-md: 0 8px 30px rgba(0, 0, 0, 0.07);
            --shadow-lg: 0 20px 50px rgba(0, 0, 0, 0.10);
            --transition: 0.25s cubic-bezier(0.4, 0, 0.2, 1);
            --font-sans: 'Inter', system-ui, -apple-system, 'Segoe UI', Roboto, 'Noto Sans SC', 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);
            background: var(--bg-body);
            color: var(--text-body);
            line-height: 1.6;
            font-size: 16px;
        }
        a {
            color: inherit;
            text-decoration: none;
            transition: var(--transition);
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        button,
        input,
        select,
        textarea {
            font-family: inherit;
            font-size: inherit;
            outline: none;
            border: none;
        }
        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 24px;
        }
        /* Header & Nav */
        .site-header {
            background: var(--secondary);
            position: sticky;
            top: 0;
            z-index: 100;
            padding: 0 24px;
            box-shadow: 0 2px 20px rgba(0, 0, 0, 0.15);
        }
        .header-inner {
            max-width: 1200px;
            margin: 0 auto;
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 68px;
        }
        .logo {
            font-size: 1.6rem;
            font-weight: 800;
            color: #fff;
            letter-spacing: -0.5px;
            display: flex;
            align-items: center;
            gap: 4px;
        }
        .logo span {
            color: var(--primary);
        }
        .logo i {
            color: var(--accent);
            font-size: 1.3rem;
            margin-right: 6px;
        }
        .nav-list {
            display: flex;
            list-style: none;
            gap: 6px;
            align-items: center;
        }
        .nav-list li a {
            color: rgba(255, 255, 255, 0.75);
            padding: 10px 18px;
            border-radius: var(--radius-sm);
            font-weight: 500;
            font-size: 0.95rem;
            display: flex;
            align-items: center;
            gap: 8px;
            transition: var(--transition);
            position: relative;
        }
        .nav-list li a i {
            font-size: 0.9rem;
            opacity: 0.7;
        }
        .nav-list li a:hover {
            color: #fff;
            background: rgba(255, 255, 255, 0.08);
        }
        .nav-list li a.active {
            color: #fff;
            background: var(--primary);
            box-shadow: 0 4px 14px rgba(232, 28, 46, 0.35);
        }
        .nav-list li a.active i {
            opacity: 1;
        }
        .nav-toggle {
            display: none;
            background: transparent;
            color: #fff;
            font-size: 1.6rem;
            cursor: pointer;
            padding: 8px 12px;
            border-radius: 8px;
            border: 1px solid rgba(255, 255, 255, 0.15);
        }
        .nav-toggle:hover {
            background: rgba(255, 255, 255, 0.08);
        }
        /* Hero */
        .hero-guide {
            background: linear-gradient(135deg, var(--secondary) 0%, #16213e 50%, #1a1a2e 100%);
            padding: 80px 0 70px;
            text-align: center;
            position: relative;
            overflow: hidden;
        }
        .hero-guide::before {
            content: '';
            position: absolute;
            inset: 0;
            background: radial-gradient(circle at 20% 50%, rgba(232, 28, 46, 0.15) 0%, transparent 60%),
                radial-gradient(circle at 80% 30%, rgba(245, 166, 35, 0.10) 0%, transparent 50%);
            pointer-events: none;
        }
        .hero-guide .container {
            position: relative;
            z-index: 2;
        }
        .hero-guide h1 {
            font-size: 3rem;
            font-weight: 800;
            color: #fff;
            letter-spacing: -1px;
            line-height: 1.2;
            margin-bottom: 18px;
        }
        .hero-guide h1 span {
            color: var(--primary);
        }
        .hero-guide p {
            font-size: 1.15rem;
            color: rgba(255, 255, 255, 0.7);
            max-width: 640px;
            margin: 0 auto 30px;
            line-height: 1.7;
        }
        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            background: rgba(255, 255, 255, 0.08);
            border: 1px solid rgba(255, 255, 255, 0.12);
            padding: 8px 22px;
            border-radius: 50px;
            color: rgba(255, 255, 255, 0.85);
            font-size: 0.9rem;
            font-weight: 500;
            margin-bottom: 24px;
            backdrop-filter: blur(4px);
        }
        .hero-badge i {
            color: var(--accent);
        }
        /* Section titles */
        .section-title {
            font-size: 2.1rem;
            font-weight: 700;
            color: var(--text-dark);
            letter-spacing: -0.5px;
            margin-bottom: 12px;
            line-height: 1.25;
        }
        .section-sub {
            color: var(--text-light);
            font-size: 1.05rem;
            max-width: 560px;
            line-height: 1.6;
        }
        .section-header {
            display: flex;
            align-items: flex-end;
            justify-content: space-between;
            margin-bottom: 40px;
            flex-wrap: wrap;
            gap: 16px;
        }
        /* Cards */
        .card-guide {
            background: var(--bg-card);
            border-radius: var(--radius);
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border);
            padding: 28px 26px 30px;
            transition: var(--transition);
            display: flex;
            flex-direction: column;
        }
        .card-guide:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-4px);
            border-color: transparent;
        }
        .card-guide .icon-wrap {
            width: 52px;
            height: 52px;
            border-radius: 14px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.5rem;
            color: #fff;
            margin-bottom: 18px;
            flex-shrink: 0;
        }
        .card-guide h3 {
            font-size: 1.2rem;
            font-weight: 700;
            color: var(--text-dark);
            margin-bottom: 10px;
            line-height: 1.3;
        }
        .card-guide p {
            color: var(--text-light);
            font-size: 0.95rem;
            line-height: 1.6;
            flex: 1;
            margin-bottom: 16px;
        }
        .card-guide .tag-group {
            display: flex;
            flex-wrap: wrap;
            gap: 8px;
            margin-top: auto;
        }
        .tag {
            display: inline-block;
            padding: 4px 14px;
            border-radius: 50px;
            font-size: 0.78rem;
            font-weight: 500;
            background: #f0f2f7;
            color: var(--text-light);
            transition: var(--transition);
        }
        .tag-primary {
            background: rgba(232, 28, 46, 0.08);
            color: var(--primary);
        }
        .tag-accent {
            background: rgba(245, 166, 35, 0.12);
            color: #b47d1a;
        }
        .tag-cool {
            background: rgba(26, 26, 46, 0.06);
            color: var(--secondary);
        }
        /* Grid */
        .grid-3 {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 28px;
        }
        .grid-2 {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 28px;
        }
        /* Quickstart list */
        .quickstart-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 20px 40px;
            background: var(--bg-card);
            border-radius: var(--radius);
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border);
            padding: 36px 40px;
        }
        .quickstart-item {
            display: flex;
            align-items: flex-start;
            gap: 16px;
            padding: 12px 0;
            border-bottom: 1px solid #f0f2f7;
        }
        .quickstart-item:last-child,
        .quickstart-item:nth-last-child(2) {
            border-bottom: none;
        }
        .quickstart-item .step-num {
            width: 34px;
            height: 34px;
            border-radius: 50%;
            background: var(--primary);
            color: #fff;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 700;
            font-size: 0.9rem;
            flex-shrink: 0;
            margin-top: 2px;
        }
        .quickstart-item .step-content h4 {
            font-size: 1rem;
            font-weight: 600;
            color: var(--text-dark);
            margin-bottom: 4px;
        }
        .quickstart-item .step-content p {
            font-size: 0.9rem;
            color: var(--text-light);
            line-height: 1.5;
        }
        /* Advanced tips */
        .tip-card {
            background: var(--bg-card);
            border-radius: var(--radius);
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border);
            padding: 30px 28px;
            display: flex;
            gap: 20px;
            align-items: flex-start;
            transition: var(--transition);
        }
        .tip-card:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-3px);
        }
        .tip-card .tip-icon {
            width: 48px;
            height: 48px;
            border-radius: 12px;
            background: rgba(232, 28, 46, 0.08);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.4rem;
            color: var(--primary);
            flex-shrink: 0;
        }
        .tip-card .tip-body h4 {
            font-size: 1.1rem;
            font-weight: 600;
            color: var(--text-dark);
            margin-bottom: 6px;
        }
        .tip-card .tip-body p {
            color: var(--text-light);
            font-size: 0.92rem;
            line-height: 1.6;
        }
        /* FAQ */
        .faq-list {
            max-width: 800px;
            margin: 0 auto;
        }
        .faq-item {
            background: var(--bg-card);
            border-radius: var(--radius-sm);
            border: 1px solid var(--border);
            margin-bottom: 14px;
            overflow: hidden;
            transition: var(--transition);
        }
        .faq-item:hover {
            border-color: #d0d5e0;
        }
        .faq-question {
            padding: 20px 24px;
            font-weight: 600;
            color: var(--text-dark);
            font-size: 1rem;
            display: flex;
            justify-content: space-between;
            align-items: center;
            cursor: pointer;
            background: transparent;
            width: 100%;
            text-align: left;
            gap: 16px;
            transition: var(--transition);
        }
        .faq-question:hover {
            background: #f8f9fc;
        }
        .faq-question i {
            color: var(--primary);
            transition: var(--transition);
            font-size: 0.9rem;
            flex-shrink: 0;
        }
        .faq-answer {
            padding: 0 24px 20px;
            color: var(--text-light);
            font-size: 0.93rem;
            line-height: 1.7;
            display: none;
        }
        .faq-item.open .faq-answer {
            display: block;
        }
        .faq-item.open .faq-question i {
            transform: rotate(180deg);
        }
        /* CTA */
        .cta-section {
            background: linear-gradient(135deg, var(--secondary) 0%, #1a1a2e 100%);
            border-radius: var(--radius-lg);
            padding: 60px 48px;
            text-align: center;
            position: relative;
            overflow: hidden;
        }
        .cta-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: radial-gradient(circle at 70% 30%, rgba(232, 28, 46, 0.12) 0%, transparent 60%);
            pointer-events: none;
        }
        .cta-section .container {
            position: relative;
            z-index: 2;
        }
        .cta-section h2 {
            font-size: 2.2rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: 14px;
            letter-spacing: -0.5px;
        }
        .cta-section p {
            color: rgba(255, 255, 255, 0.7);
            font-size: 1.05rem;
            max-width: 520px;
            margin: 0 auto 28px;
            line-height: 1.6;
        }
        .btn-group {
            display: flex;
            flex-wrap: wrap;
            gap: 14px;
            justify-content: center;
        }
        .btn-primary {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            padding: 14px 34px;
            border-radius: 50px;
            font-weight: 600;
            font-size: 1rem;
            background: var(--primary);
            color: #fff;
            border: none;
            cursor: pointer;
            transition: var(--transition);
            box-shadow: 0 6px 20px rgba(232, 28, 46, 0.30);
        }
        .btn-primary:hover {
            background: var(--primary-dark);
            transform: translateY(-2px);
            box-shadow: 0 10px 30px rgba(232, 28, 46, 0.35);
        }
        .btn-primary:active {
            transform: translateY(0);
        }
        .btn-outline-light {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            padding: 14px 34px;
            border-radius: 50px;
            font-weight: 600;
            font-size: 1rem;
            background: transparent;
            color: #fff;
            border: 2px solid rgba(255, 255, 255, 0.25);
            cursor: pointer;
            transition: var(--transition);
        }
        .btn-outline-light:hover {
            border-color: #fff;
            background: rgba(255, 255, 255, 0.06);
            transform: translateY(-2px);
        }
        /* Footer */
        .site-footer {
            background: var(--bg-dark);
            color: rgba(255, 255, 255, 0.75);
            padding: 60px 0 0;
            margin-top: 60px;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 1.8fr 1fr 1fr 1fr;
            gap: 40px;
            padding-bottom: 40px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.06);
        }
        .footer-brand .logo {
            margin-bottom: 14px;
        }
        .footer-brand p {
            font-size: 0.9rem;
            color: rgba(255, 255, 255, 0.55);
            line-height: 1.7;
            max-width: 300px;
        }
        .footer-col h5 {
            color: #fff;
            font-weight: 600;
            font-size: 0.95rem;
            margin-bottom: 18px;
            letter-spacing: 0.3px;
        }
        .footer-col a {
            display: block;
            color: rgba(255, 255, 255, 0.55);
            font-size: 0.9rem;
            padding: 5px 0;
            transition: var(--transition);
        }
        .footer-col a:hover {
            color: #fff;
            padding-left: 4px;
        }
        .footer-socials {
            display: flex;
            gap: 14px;
            margin-top: 6px;
        }
        .footer-socials a {
            width: 40px;
            height: 40px;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.06);
            display: flex;
            align-items: center;
            justify-content: center;
            color: rgba(255, 255, 255, 0.6);
            font-size: 1.1rem;
            padding: 0;
            transition: var(--transition);
        }
        .footer-socials a:hover {
            background: var(--primary);
            color: #fff;
            padding: 0;
            transform: scale(1.05);
        }
        .footer-bottom {
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 12px;
            padding: 24px 0 30px;
            font-size: 0.82rem;
            color: rgba(255, 255, 255, 0.4);
        }
        .footer-bottom span:last-child {
            color: rgba(255, 255, 255, 0.3);
        }
        /* Count-up */
        .stat-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
            text-align: center;
        }
        .stat-item {
            background: var(--bg-card);
            border-radius: var(--radius);
            padding: 32px 20px;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border);
            transition: var(--transition);
        }
        .stat-item:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-3px);
        }
        .stat-item .num {
            font-size: 2.2rem;
            font-weight: 800;
            color: var(--primary);
            line-height: 1.2;
        }
        .stat-item .label {
            color: var(--text-light);
            font-size: 0.9rem;
            margin-top: 6px;
        }
        /* Breadcrumb */
        .breadcrumb {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 0.88rem;
            color: var(--text-light);
            padding: 18px 0 8px;
            flex-wrap: wrap;
        }
        .breadcrumb a {
            color: var(--text-light);
        }
        .breadcrumb a:hover {
            color: var(--primary);
        }
        .breadcrumb span {
            color: var(--text-dark);
            font-weight: 500;
        }
        .breadcrumb i {
            font-size: 0.6rem;
            color: #b0b8c8;
        }
        /* Skeleton / spacing */
        .py-section {
            padding: 70px 0;
        }
        .py-section-sm {
            padding: 48px 0;
        }
        .mb-section {
            margin-bottom: 60px;
        }
        /* Responsive */
        @media (max-width: 1024px) {
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 30px;
            }
            .stat-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .quickstart-grid {
                grid-template-columns: 1fr;
                padding: 28px 24px;
            }
            .quickstart-item:nth-last-child(2) {
                border-bottom: 1px solid #f0f2f7;
            }
            .quickstart-item:last-child {
                border-bottom: none;
            }
        }
        @media (max-width: 768px) {
            .nav-list {
                display: none;
                flex-direction: column;
                background: var(--secondary);
                position: absolute;
                top: 68px;
                left: 0;
                right: 0;
                padding: 16px 24px 24px;
                gap: 4px;
                box-shadow: 0 20px 40px rgba(0, 0, 0, 0.3);
                border-radius: 0 0 var(--radius) var(--radius);
            }
            .nav-list.open {
                display: flex;
            }
            .nav-list li a {
                padding: 12px 16px;
                justify-content: flex-start;
            }
            .nav-toggle {
                display: block;
            }
            .hero-guide h1 {
                font-size: 2.2rem;
            }
            .hero-guide p {
                font-size: 1rem;
            }
            .grid-3,
            .grid-2 {
                grid-template-columns: 1fr;
                gap: 20px;
            }
            .section-title {
                font-size: 1.6rem;
            }
            .section-header {
                flex-direction: column;
                align-items: flex-start;
            }
            .cta-section {
                padding: 40px 24px;
            }
            .cta-section h2 {
                font-size: 1.6rem;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 28px;
            }
            .footer-brand p {
                max-width: 100%;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
            .stat-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 16px;
            }
            .stat-item .num {
                font-size: 1.8rem;
            }
            .tip-card {
                flex-direction: column;
                gap: 14px;
            }
            .quickstart-grid {
                padding: 20px 16px;
            }
            .hero-guide {
                padding: 56px 0 50px;
            }
            .py-section {
                padding: 48px 0;
            }
        }
        @media (max-width: 520px) {
            .container {
                padding: 0 16px;
            }
            .hero-guide h1 {
                font-size: 1.7rem;
            }
            .stat-grid {
                grid-template-columns: 1fr 1fr;
                gap: 12px;
            }
            .stat-item {
                padding: 20px 14px;
            }
            .stat-item .num {
                font-size: 1.5rem;
            }
            .btn-primary,
            .btn-outline-light {
                padding: 12px 24px;
                font-size: 0.9rem;
            }
            .cta-section h2 {
                font-size: 1.3rem;
            }
            .breadcrumb {
                font-size: 0.78rem;
            }
            .footer-socials a {
                width: 36px;
                height: 36px;
                font-size: 1rem;
            }
        }

/* roulang page: category2 */
/* ===== 设计变量 ===== */
        :root {
            --primary: #2563eb;
            --primary-light: #3b82f6;
            --primary-dark: #1d4ed8;
            --primary-bg: #eff6ff;
            --secondary: #f59e0b;
            --secondary-light: #fbbf24;
            --accent: #8b5cf6;
            --bg-body: #f8fafc;
            --bg-white: #ffffff;
            --text-main: #0f172a;
            --text-body: #1e293b;
            --text-soft: #475569;
            --text-muted: #94a3b8;
            --border-light: #e2e8f0;
            --border-focus: #3b82f6;
            --radius-sm: 0.375rem;
            --radius-md: 0.75rem;
            --radius-lg: 1rem;
            --radius-xl: 1.25rem;
            --shadow-sm: 0 1px 2px rgba(0,0,0,0.05);
            --shadow-md: 0 4px 12px rgba(0,0,0,0.08);
            --shadow-lg: 0 12px 32px rgba(0,0,0,0.12);
            --shadow-card: 0 2px 8px rgba(0,0,0,0.06);
            --transition: all 0.25s ease;
            --max-width: 1200px;
            --header-h: 70px;
        }

        /* ===== 基础 Reset ===== */
        *, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
        html { scroll-behavior: smooth; -webkit-font-smoothing: antialiased; }
        body {
            font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "PingFang SC", "Microsoft YaHei", sans-serif;
            font-size: 16px;
            line-height: 1.7;
            color: var(--text-body);
            background: var(--bg-body);
            min-height: 100vh;
            display: flex;
            flex-direction: column;
        }
        a { text-decoration: none; color: inherit; transition: var(--transition); }
        img { max-width: 100%; height: auto; display: block; }
        button, input, textarea { font-family: inherit; font-size: inherit; }
        button { cursor: pointer; border: none; background: none; }
        ul, ol { list-style: none; }
        .container { max-width: var(--max-width); margin: 0 auto; padding: 0 20px; width: 100%; }

        /* ===== 头部导航 ===== */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 1000;
            background: rgba(255,255,255,0.96);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border-bottom: 1px solid var(--border-light);
            box-shadow: 0 1px 4px rgba(0,0,0,0.02);
            height: var(--header-h);
        }
        .site-header .container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 100%;
        }
        .logo {
            font-size: 1.4rem;
            font-weight: 700;
            color: var(--primary);
            letter-spacing: -0.01em;
            display: flex;
            align-items: center;
            gap: 2px;
            white-space: nowrap;
        }
        .logo span { color: var(--secondary); font-weight: 800; }
        .logo i { font-size: 1.2rem; margin-right: 6px; color: var(--secondary); }

        .nav-wrapper { display: flex; align-items: center; gap: 8px; }
        .nav-list { display: flex; align-items: center; gap: 4px; }
        .nav-list li a {
            display: flex;
            align-items: center;
            gap: 6px;
            padding: 8px 18px;
            border-radius: var(--radius-md);
            font-size: 0.9rem;
            font-weight: 500;
            color: var(--text-soft);
            transition: var(--transition);
            white-space: nowrap;
        }
        .nav-list li a i { font-size: 0.85rem; opacity: 0.7; }
        .nav-list li a:hover { background: var(--primary-bg); color: var(--primary); }
        .nav-list li a.active {
            background: var(--primary);
            color: #fff;
            box-shadow: 0 2px 8px rgba(37,99,235,0.25);
        }
        .nav-list li a.active i { opacity: 1; }

        .nav-cta {
            padding: 8px 22px;
            background: var(--secondary);
            color: #1e293b;
            font-weight: 600;
            border-radius: var(--radius-md);
            font-size: 0.9rem;
            transition: var(--transition);
            box-shadow: 0 2px 6px rgba(245,158,11,0.3);
            white-space: nowrap;
            display: flex;
            align-items: center;
            gap: 6px;
        }
        .nav-cta:hover { background: #f59e0b; transform: translateY(-1px); box-shadow: 0 4px 12px rgba(245,158,11,0.35); }
        .nav-cta i { font-size: 0.8rem; }

        .menu-toggle { display: none; flex-direction: column; gap: 5px; padding: 8px; cursor: pointer; }
        .menu-toggle span { display: block; width: 24px; height: 2.5px; background: var(--text-main); border-radius: 4px; transition: var(--transition); }

        /* ===== 英雄区 / 页面标题 ===== */
        .page-hero {
            background: linear-gradient(135deg, #1e3a5f 0%, #0f172a 100%);
            padding: 60px 0 50px;
            position: relative;
            overflow: hidden;
        }
        .page-hero::before {
            content: '';
            position: absolute;
            top: -30%;
            right: -10%;
            width: 400px;
            height: 400px;
            background: radial-gradient(circle, rgba(37,99,235,0.15) 0%, transparent 70%);
            border-radius: 50%;
        }
        .page-hero::after {
            content: '';
            position: absolute;
            bottom: -20%;
            left: -5%;
            width: 300px;
            height: 300px;
            background: radial-gradient(circle, rgba(245,158,11,0.1) 0%, transparent 70%);
            border-radius: 50%;
        }
        .page-hero .container { position: relative; z-index: 2; }
        .page-hero h1 {
            font-size: 2.4rem;
            font-weight: 800;
            color: #fff;
            line-height: 1.2;
            margin-bottom: 12px;
        }
        .page-hero h1 i { color: var(--secondary); margin-right: 10px; }
        .page-hero p {
            font-size: 1.1rem;
            color: rgba(255,255,255,0.8);
            max-width: 640px;
            line-height: 1.7;
        }
        .page-hero .breadcrumb {
            display: flex;
            align-items: center;
            gap: 8px;
            margin-top: 16px;
            font-size: 0.85rem;
            color: rgba(255,255,255,0.6);
        }
        .page-hero .breadcrumb a { color: rgba(255,255,255,0.7); }
        .page-hero .breadcrumb a:hover { color: #fff; }
        .page-hero .breadcrumb i { font-size: 0.7rem; }

        /* ===== 板块通用 ===== */
        .section { padding: 60px 0; }
        .section-title {
            font-size: 1.6rem;
            font-weight: 700;
            color: var(--text-main);
            margin-bottom: 8px;
            line-height: 1.3;
        }
        .section-sub {
            font-size: 0.95rem;
            color: var(--text-soft);
            max-width: 600px;
            margin-bottom: 32px;
        }
        .section-header { margin-bottom: 36px; }
        .section-header .section-title { margin-bottom: 6px; }
        .section-header .section-sub { margin-bottom: 0; }

        /* ===== 卡片通用 ===== */
        .card {
            background: var(--bg-white);
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-card);
            border: 1px solid var(--border-light);
            transition: var(--transition);
            overflow: hidden;
        }
        .card:hover { box-shadow: var(--shadow-md); transform: translateY(-3px); }
        .card-body { padding: 24px; }

        /* ===== 社区板块网格 ===== */
        .community-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
            gap: 24px;
        }
        .community-card {
            background: var(--bg-white);
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-card);
            border: 1px solid var(--border-light);
            padding: 28px 24px;
            text-align: center;
            transition: var(--transition);
        }
        .community-card:hover { box-shadow: var(--shadow-md); transform: translateY(-4px); }
        .community-card .icon-wrap {
            width: 56px;
            height: 56px;
            border-radius: 16px;
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 16px;
            font-size: 1.5rem;
            color: #fff;
        }
        .community-card h3 { font-size: 1.1rem; font-weight: 600; margin-bottom: 6px; color: var(--text-main); }
        .community-card p { font-size: 0.88rem; color: var(--text-soft); line-height: 1.6; }
        .community-card .badge {
            display: inline-block;
            margin-top: 12px;
            padding: 4px 14px;
            border-radius: 999px;
            font-size: 0.75rem;
            font-weight: 500;
            background: var(--primary-bg);
            color: var(--primary);
        }

        /* ===== 帖子列表 ===== */
        .post-list { display: flex; flex-direction: column; gap: 12px; }
        .post-item {
            display: flex;
            align-items: center;
            gap: 16px;
            background: var(--bg-white);
            border-radius: var(--radius-md);
            padding: 16px 20px;
            border: 1px solid var(--border-light);
            transition: var(--transition);
            cursor: default;
        }
        .post-item:hover { border-color: var(--primary-light); box-shadow: var(--shadow-sm); }
        .post-item .post-rank {
            width: 32px;
            height: 32px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 700;
            font-size: 0.85rem;
            background: var(--primary-bg);
            color: var(--primary);
            flex-shrink: 0;
        }
        .post-item .post-rank.top { background: var(--secondary); color: #1e293b; }
        .post-item .post-content { flex: 1; min-width: 0; }
        .post-item .post-content h4 { font-size: 0.95rem; font-weight: 600; color: var(--text-main); margin-bottom: 2px; }
        .post-item .post-content p { font-size: 0.82rem; color: var(--text-soft); white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
        .post-item .post-meta {
            display: flex;
            align-items: center;
            gap: 12px;
            flex-shrink: 0;
            font-size: 0.78rem;
            color: var(--text-muted);
        }
        .post-item .post-meta i { margin-right: 3px; }
        .post-item .post-meta .tag {
            padding: 2px 10px;
            border-radius: 999px;
            background: var(--primary-bg);
            color: var(--primary);
            font-weight: 500;
            font-size: 0.7rem;
        }

        /* ===== 社区数据 ===== */
        .stats-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
            gap: 20px;
        }
        .stat-card {
            background: var(--bg-white);
            border-radius: var(--radius-lg);
            padding: 24px 20px;
            text-align: center;
            border: 1px solid var(--border-light);
            box-shadow: var(--shadow-sm);
            transition: var(--transition);
        }
        .stat-card:hover { box-shadow: var(--shadow-md); transform: translateY(-2px); }
        .stat-card .stat-num {
            font-size: 2rem;
            font-weight: 800;
            color: var(--primary);
            line-height: 1.2;
        }
        .stat-card .stat-label { font-size: 0.88rem; color: var(--text-soft); margin-top: 4px; }

        /* ===== FAQ ===== */
        .faq-list { display: flex; flex-direction: column; gap: 12px; max-width: 800px; margin: 0 auto; }
        .faq-item {
            background: var(--bg-white);
            border-radius: var(--radius-md);
            border: 1px solid var(--border-light);
            overflow: hidden;
            transition: var(--transition);
        }
        .faq-item:hover { border-color: var(--primary-light); }
        .faq-item summary {
            padding: 16px 20px;
            font-weight: 600;
            font-size: 0.95rem;
            color: var(--text-main);
            cursor: pointer;
            display: flex;
            align-items: center;
            justify-content: space-between;
            list-style: none;
        }
        .faq-item summary::-webkit-details-marker { display: none; }
        .faq-item summary::after {
            content: '\f078';
            font-family: 'Font Awesome 6 Free';
            font-weight: 900;
            font-size: 0.75rem;
            color: var(--text-muted);
            transition: var(--transition);
        }
        .faq-item[open] summary::after { transform: rotate(180deg); }
        .faq-item .faq-answer { padding: 0 20px 16px; font-size: 0.9rem; color: var(--text-soft); line-height: 1.7; }

        /* ===== CTA ===== */
        .cta-section {
            background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
            padding: 56px 0;
            text-align: center;
            border-radius: var(--radius-xl);
            margin: 0 20px;
        }
        .cta-section h2 { font-size: 1.6rem; font-weight: 700; color: #fff; margin-bottom: 10px; }
        .cta-section p { font-size: 1rem; color: rgba(255,255,255,0.85); max-width: 500px; margin: 0 auto 24px; }
        .cta-section .btn-cta {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 14px 36px;
            background: #fff;
            color: var(--primary);
            font-weight: 700;
            border-radius: var(--radius-md);
            font-size: 1rem;
            transition: var(--transition);
            box-shadow: 0 4px 16px rgba(0,0,0,0.15);
        }
        .cta-section .btn-cta:hover { transform: translateY(-2px); box-shadow: 0 8px 24px rgba(0,0,0,0.2); }

        /* ===== 页脚 ===== */
        .site-footer {
            background: #0f172a;
            color: rgba(255,255,255,0.8);
            padding: 48px 0 28px;
            margin-top: 60px;
            border-top: 1px solid rgba(255,255,255,0.06);
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 1.6fr 1fr 1fr 1fr;
            gap: 32px;
            margin-bottom: 32px;
        }
        .footer-brand .logo { font-size: 1.2rem; margin-bottom: 12px; color: #fff; display: inline-flex; }
        .footer-brand .logo span { color: var(--secondary); }
        .footer-brand p { font-size: 0.85rem; color: rgba(255,255,255,0.6); line-height: 1.7; max-width: 320px; }
        .footer-col h5 { font-size: 0.9rem; font-weight: 600; color: #fff; margin-bottom: 14px; }
        .footer-col a {
            display: block;
            font-size: 0.85rem;
            color: rgba(255,255,255,0.6);
            padding: 4px 0;
            transition: var(--transition);
        }
        .footer-col a:hover { color: var(--secondary); padding-left: 4px; }
        .footer-socials { display: flex; gap: 12px; margin-top: 8px; }
        .footer-socials a {
            width: 36px;
            height: 36px;
            border-radius: 50%;
            background: rgba(255,255,255,0.08);
            display: flex;
            align-items: center;
            justify-content: center;
            color: rgba(255,255,255,0.7);
            font-size: 1rem;
            transition: var(--transition);
        }
        .footer-socials a:hover { background: var(--secondary); color: #0f172a; }
        .footer-bottom {
            border-top: 1px solid rgba(255,255,255,0.06);
            padding-top: 20px;
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            align-items: center;
            gap: 12px;
            font-size: 0.78rem;
            color: rgba(255,255,255,0.45);
        }

        /* ===== 响应式 ===== */
        @media (max-width: 1024px) {
            .footer-grid { grid-template-columns: 1fr 1fr; }
        }
        @media (max-width: 768px) {
            .site-header { height: auto; padding: 10px 0; }
            .menu-toggle { display: flex; }
            .nav-wrapper { position: fixed; top: 0; left: 0; width: 100%; height: 100%; background: rgba(255,255,255,0.98); backdrop-filter: blur(20px); flex-direction: column; justify-content: center; align-items: center; gap: 20px; transform: translateX(100%); transition: var(--transition); z-index: 2000; }
            .nav-wrapper.open { transform: translateX(0); }
            .nav-list { flex-direction: column; gap: 8px; }
            .nav-list li a { font-size: 1.1rem; padding: 12px 24px; }
            .nav-cta { margin-top: 12px; font-size: 1rem; padding: 12px 32px; }
            .menu-toggle.close-btn { position: absolute; top: 20px; right: 20px; display: flex; z-index: 2001; }
            .menu-toggle.close-btn span:nth-child(1) { transform: rotate(45deg) translate(5px,5px); }
            .menu-toggle.close-btn span:nth-child(2) { opacity: 0; }
            .menu-toggle.close-btn span:nth-child(3) { transform: rotate(-45deg) translate(5px,-5px); }

            .page-hero h1 { font-size: 1.6rem; }
            .page-hero p { font-size: 0.95rem; }
            .section-title { font-size: 1.3rem; }
            .community-grid { grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); }
            .footer-grid { grid-template-columns: 1fr; gap: 24px; }
            .footer-bottom { flex-direction: column; text-align: center; }
            .cta-section { margin: 0 12px; padding: 40px 16px; }
            .cta-section h2 { font-size: 1.3rem; }
            .post-item { flex-wrap: wrap; }
            .post-item .post-meta { width: 100%; justify-content: flex-start; padding-top: 6px; border-top: 1px solid var(--border-light); }
            .stats-grid { grid-template-columns: repeat(2, 1fr); }
        }
        @media (max-width: 520px) {
            .container { padding: 0 14px; }
            .page-hero { padding: 40px 0 32px; }
            .section { padding: 40px 0; }
            .community-grid { grid-template-columns: 1fr; }
            .stats-grid { grid-template-columns: 1fr 1fr; gap: 12px; }
            .stat-card .stat-num { font-size: 1.5rem; }
            .faq-item summary { font-size: 0.88rem; padding: 14px 16px; }
            .faq-item .faq-answer { font-size: 0.85rem; padding: 0 16px 14px; }
        }