/* roulang page: index */
:root {
  --bg-primary: #0b0f1a;
  --bg-secondary: #111827;
  --bg-card: #1a1f2e;
  --bg-card-hover: #1f2537;
  --bg-nav: #080c14;
  --text-primary: #f1f5f9;
  --text-secondary: #94a3b8;
  --text-muted: #64748b;
  --accent: #00e5ff;
  --accent-glow: rgba(0, 229, 255, 0.15);
  --accent-secondary: #8b5cf6;
  --accent-secondary-glow: rgba(139, 92, 246, 0.15);
  --border: #1e293b;
  --border-accent: rgba(0, 229, 255, 0.3);
  --radius: 12px;
  --radius-sm: 8px;
  --radius-lg: 20px;
  --shadow: 0 8px 32px rgba(0,0,0,0.4);
  --shadow-glow: 0 0 30px rgba(0, 229, 255, 0.08);
  --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  --font-sans: 'Segoe UI', system-ui, -apple-system, sans-serif;
  --container: 1200px;
}
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body { font-family: var(--font-sans); background: var(--bg-primary); color: var(--text-primary); line-height: 1.7; -webkit-font-smoothing: antialiased; }
a { color: var(--accent); text-decoration: none; transition: var(--transition); }
a:hover { color: #fff; }
img { max-width: 100%; height: auto; display: block; }
ul, ol { list-style: none; }
button, input, textarea { font-family: inherit; font-size: inherit; }
.container { max-width: var(--container); margin: 0 auto; padding: 0 24px; }
.section { padding: 80px 0; }
.section-title { font-size: 2rem; font-weight: 700; margin-bottom: 0.75rem; letter-spacing: -0.02em; }
.section-sub { font-size: 1.05rem; color: var(--text-secondary); max-width: 640px; margin-bottom: 3rem; }
.text-center { text-align: center; }
.mx-auto { margin-left: auto; margin-right: auto; }

/* Header & Nav */
.header { position: fixed; top: 0; left: 0; right: 0; z-index: 1000; background: rgba(8, 12, 20, 0.92); backdrop-filter: blur(20px); border-bottom: 1px solid var(--border); transition: var(--transition); }
.header .container { display: flex; align-items: center; justify-content: space-between; height: 72px; }
.logo { font-size: 1.35rem; font-weight: 800; letter-spacing: -0.03em; color: #fff; display: flex; align-items: center; gap: 10px; }
.logo:hover { color: var(--accent); }
.logo .logo-icon { width: 36px; height: 36px; background: linear-gradient(135deg, var(--accent), var(--accent-secondary)); border-radius: 10px; display: flex; align-items: center; justify-content: center; font-size: 1.1rem; font-weight: 700; color: #0b0f1a; }
.nav { display: flex; align-items: center; gap: 8px; }
.nav a { padding: 8px 18px; border-radius: var(--radius-sm); font-size: 0.9rem; font-weight: 500; color: var(--text-secondary); transition: var(--transition); position: relative; }
.nav a:hover { color: #fff; background: rgba(255,255,255,0.05); }
.nav a.active { color: var(--accent); background: var(--accent-glow); }
.nav a.active::after { content: ''; position: absolute; bottom: -2px; left: 50%; transform: translateX(-50%); width: 60%; height: 2px; background: var(--accent); box-shadow: 0 0 12px var(--accent); border-radius: 2px; }
.nav-cta { background: linear-gradient(135deg, var(--accent), var(--accent-secondary)) !important; color: #0b0f1a !important; font-weight: 700 !important; padding: 10px 24px !important; border-radius: var(--radius-sm) !important; box-shadow: 0 4px 20px rgba(0, 229, 255, 0.25); }
.nav-cta:hover { transform: translateY(-2px); box-shadow: 0 8px 30px rgba(0, 229, 255, 0.35) !important; color: #0b0f1a !important; }
.menu-toggle { display: none; flex-direction: column; gap: 5px; cursor: pointer; padding: 8px; background: none; border: none; }
.menu-toggle span { width: 24px; height: 2px; background: var(--text-primary); border-radius: 2px; transition: var(--transition); }

/* Hero */
.hero { min-height: 100vh; display: flex; align-items: center; position: relative; background: url('/assets/images/backpic/back-1.png') center center / cover no-repeat; padding-top: 72px; overflow: hidden; }
.hero::before { content: ''; position: absolute; inset: 0; background: linear-gradient(135deg, rgba(11,15,26,0.92) 0%, rgba(11,15,26,0.7) 50%, rgba(11,15,26,0.92) 100%); z-index: 1; }
.hero .container { position: relative; z-index: 2; display: flex; align-items: center; justify-content: space-between; gap: 60px; }
.hero-content { flex: 1; max-width: 620px; }
.hero-badge { display: inline-block; padding: 6px 18px; background: var(--accent-glow); border: 1px solid var(--border-accent); border-radius: 50px; font-size: 0.8rem; font-weight: 600; color: var(--accent); margin-bottom: 1.5rem; backdrop-filter: blur(4px); }
.hero h1 { font-size: 3.2rem; font-weight: 800; line-height: 1.2; margin-bottom: 1.2rem; letter-spacing: -0.03em; }
.hero h1 .highlight { background: linear-gradient(135deg, var(--accent), var(--accent-secondary)); -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text; }
.hero p { font-size: 1.1rem; color: var(--text-secondary); line-height: 1.8; margin-bottom: 2rem; max-width: 520px; }
.hero-actions { display: flex; gap: 16px; flex-wrap: wrap; }
.btn { display: inline-flex; align-items: center; gap: 8px; padding: 14px 32px; border-radius: var(--radius-sm); font-weight: 600; font-size: 0.95rem; transition: var(--transition); cursor: pointer; border: none; }
.btn-primary { background: linear-gradient(135deg, var(--accent), var(--accent-secondary)); color: #0b0f1a; box-shadow: 0 4px 24px rgba(0, 229, 255, 0.3); }
.btn-primary:hover { transform: translateY(-3px); box-shadow: 0 8px 36px rgba(0, 229, 255, 0.45); color: #0b0f1a; }
.btn-outline { background: transparent; border: 1.5px solid var(--border-accent); color: var(--accent); backdrop-filter: blur(4px); }
.btn-outline:hover { background: var(--accent-glow); border-color: var(--accent); transform: translateY(-3px); color: var(--accent); }
.btn-lg { padding: 16px 40px; font-size: 1.05rem; }
.hero-visual { flex: 1; max-width: 480px; position: relative; }
.hero-visual img { width: 100%; border-radius: var(--radius-lg); box-shadow: var(--shadow), var(--shadow-glow); border: 1px solid var(--border); }
.hero-visual::after { content: ''; position: absolute; inset: -20px; border-radius: var(--radius-lg); background: linear-gradient(135deg, var(--accent-glow), transparent, var(--accent-secondary-glow)); z-index: -1; filter: blur(40px); }

/* Features */
.features-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 28px; }
.feature-card { background: var(--bg-card); border: 1px solid var(--border); border-radius: var(--radius); padding: 36px 28px; transition: var(--transition); position: relative; overflow: hidden; }
.feature-card:hover { border-color: var(--border-accent); transform: translateY(-6px); box-shadow: var(--shadow), var(--shadow-glow); }
.feature-card .icon { width: 56px; height: 56px; border-radius: 14px; display: flex; align-items: center; justify-content: center; font-size: 1.6rem; margin-bottom: 1.2rem; }
.feature-card .icon.purple { background: rgba(139, 92, 246, 0.15); color: var(--accent-secondary); }
.feature-card .icon.cyan { background: var(--accent-glow); color: var(--accent); }
.feature-card .icon.gold { background: rgba(251, 191, 36, 0.15); color: #fbbf24; }
.feature-card h3 { font-size: 1.2rem; font-weight: 700; margin-bottom: 0.6rem; }
.feature-card p { color: var(--text-secondary); font-size: 0.92rem; line-height: 1.7; }

/* Categories */
.categories-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.cat-card { position: relative; border-radius: var(--radius); overflow: hidden; background: var(--bg-card); border: 1px solid var(--border); transition: var(--transition); min-height: 280px; display: flex; flex-direction: column; }
.cat-card:hover { transform: translateY(-6px); border-color: var(--border-accent); box-shadow: var(--shadow), var(--shadow-glow); }
.cat-card .cat-img { height: 160px; background: var(--bg-secondary); overflow: hidden; }
.cat-card .cat-img img { width: 100%; height: 100%; object-fit: cover; transition: var(--transition); }
.cat-card:hover .cat-img img { transform: scale(1.05); }
.cat-card .cat-body { padding: 20px 24px 24px; flex: 1; display: flex; flex-direction: column; }
.cat-card .cat-body h3 { font-size: 1.1rem; font-weight: 700; margin-bottom: 0.4rem; }
.cat-card .cat-body p { color: var(--text-secondary); font-size: 0.85rem; line-height: 1.6; flex: 1; }
.cat-card .cat-tag { display: inline-block; padding: 3px 12px; border-radius: 50px; font-size: 0.72rem; font-weight: 600; background: var(--accent-glow); color: var(--accent); margin-top: 0.75rem; align-self: flex-start; }

/* News / CMS List */
.news-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 24px; }
.news-card { background: var(--bg-card); border: 1px solid var(--border); border-radius: var(--radius); padding: 24px 28px; transition: var(--transition); display: flex; flex-direction: column; }
.news-card:hover { border-color: var(--border-accent); transform: translateY(-4px); box-shadow: var(--shadow); }
.news-card .news-meta { display: flex; align-items: center; gap: 12px; margin-bottom: 0.6rem; font-size: 0.8rem; color: var(--text-muted); }
.news-card .news-meta .cat { padding: 2px 10px; border-radius: 50px; background: var(--accent-glow); color: var(--accent); font-weight: 600; }
.news-card h3 { font-size: 1.05rem; font-weight: 700; margin-bottom: 0.5rem; line-height: 1.5; }
.news-card h3 a { color: var(--text-primary); }
.news-card h3 a:hover { color: var(--accent); }
.news-card p { color: var(--text-secondary); font-size: 0.88rem; line-height: 1.7; flex: 1; }
.news-card .news-date { font-size: 0.78rem; color: var(--text-muted); margin-top: 0.8rem; }
.news-empty { grid-column: 1 / -1; text-align: center; padding: 60px 20px; color: var(--text-muted); background: var(--bg-card); border-radius: var(--radius); border: 1px dashed var(--border); font-size: 0.95rem; }

/* Stats */
.stats { background: var(--bg-secondary); border-top: 1px solid var(--border); border-bottom: 1px solid var(--border); }
.stats-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 32px; text-align: center; }
.stat-item .num { font-size: 2.6rem; font-weight: 800; background: linear-gradient(135deg, var(--accent), var(--accent-secondary)); -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text; line-height: 1.2; }
.stat-item .label { font-size: 0.85rem; color: var(--text-muted); margin-top: 0.3rem; }

/* Featured Picks */
.picks-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.pick-card { background: var(--bg-card); border: 1px solid var(--border); border-radius: var(--radius); overflow: hidden; transition: var(--transition); }
.pick-card:hover { transform: translateY(-6px); border-color: var(--border-accent); box-shadow: var(--shadow), var(--shadow-glow); }
.pick-card .pick-img { height: 180px; background: var(--bg-secondary); overflow: hidden; }
.pick-card .pick-img img { width: 100%; height: 100%; object-fit: cover; transition: var(--transition); }
.pick-card:hover .pick-img img { transform: scale(1.05); }
.pick-card .pick-body { padding: 20px 24px 24px; }
.pick-card .pick-body .pick-tag { display: inline-block; padding: 2px 10px; border-radius: 50px; font-size: 0.7rem; font-weight: 600; background: var(--accent-secondary-glow); color: var(--accent-secondary); margin-bottom: 0.5rem; }
.pick-card .pick-body h3 { font-size: 1.05rem; font-weight: 700; margin-bottom: 0.3rem; }
.pick-card .pick-body p { color: var(--text-secondary); font-size: 0.85rem; line-height: 1.6; }
.pick-card .pick-body .rating { margin-top: 0.6rem; color: #fbbf24; font-size: 0.85rem; }

/* FAQ */
.faq-grid { max-width: 800px; margin: 0 auto; display: flex; flex-direction: column; gap: 12px; }
.faq-item { background: var(--bg-card); border: 1px solid var(--border); border-radius: var(--radius); overflow: hidden; transition: var(--transition); }
.faq-item:hover { border-color: var(--border-accent); }
.faq-item .faq-q { padding: 18px 24px; font-weight: 600; font-size: 0.98rem; cursor: pointer; display: flex; align-items: center; justify-content: space-between; gap: 16px; user-select: none; color: var(--text-primary); }
.faq-item .faq-q::after { content: '+'; font-size: 1.3rem; color: var(--accent); font-weight: 300; transition: var(--transition); flex-shrink: 0; }
.faq-item.active .faq-q::after { transform: rotate(45deg); }
.faq-item .faq-a { max-height: 0; overflow: hidden; transition: max-height 0.35s ease, padding 0.35s ease; padding: 0 24px; color: var(--text-secondary); font-size: 0.9rem; line-height: 1.8; }
.faq-item.active .faq-a { max-height: 300px; padding: 0 24px 18px; }

/* CTA */
.cta-section { background: linear-gradient(135deg, var(--bg-secondary), #0d1225); border-top: 1px solid var(--border); border-bottom: 1px solid var(--border); }
.cta-box { text-align: center; padding: 60px 40px; background: var(--bg-card); border: 1px solid var(--border-accent); border-radius: var(--radius-lg); box-shadow: var(--shadow), var(--shadow-glow); }
.cta-box h2 { font-size: 2rem; font-weight: 700; margin-bottom: 0.8rem; }
.cta-box p { color: var(--text-secondary); max-width: 540px; margin: 0 auto 2rem; font-size: 1rem; }

/* Footer */
.footer { background: var(--bg-nav); border-top: 1px solid var(--border); padding: 48px 0 24px; }
.footer-grid { display: grid; grid-template-columns: 2fr 1fr 1fr 1fr; gap: 40px; margin-bottom: 32px; }
.footer-brand .logo { margin-bottom: 0.8rem; }
.footer-brand p { color: var(--text-muted); font-size: 0.85rem; max-width: 280px; line-height: 1.7; }
.footer-col h4 { font-size: 0.9rem; font-weight: 700; color: var(--text-primary); margin-bottom: 1rem; }
.footer-col a { display: block; color: var(--text-muted); font-size: 0.85rem; padding: 4px 0; transition: var(--transition); }
.footer-col a:hover { color: var(--accent); padding-left: 4px; }
.footer-bottom { border-top: 1px solid var(--border); padding-top: 20px; display: flex; align-items: center; justify-content: space-between; flex-wrap: wrap; gap: 12px; }
.footer-bottom p { color: var(--text-muted); font-size: 0.8rem; }
.footer-bottom .social a { display: inline-flex; align-items: center; justify-content: center; width: 36px; height: 36px; border-radius: 50%; background: var(--bg-card); color: var(--text-muted); transition: var(--transition); font-size: 0.9rem; }
.footer-bottom .social a:hover { background: var(--accent-glow); color: var(--accent); }

/* Back to top */
.back-top { position: fixed; bottom: 30px; right: 30px; width: 48px; height: 48px; border-radius: 50%; background: linear-gradient(135deg, var(--accent), var(--accent-secondary)); color: #0b0f1a; border: none; font-size: 1.2rem; cursor: pointer; box-shadow: 0 4px 20px rgba(0, 229, 255, 0.3); transition: var(--transition); z-index: 999; opacity: 0; visibility: hidden; transform: translateY(20px); }
.back-top.visible { opacity: 1; visibility: visible; transform: translateY(0); }
.back-top:hover { transform: translateY(-4px); box-shadow: 0 8px 30px rgba(0, 229, 255, 0.45); }

/* Responsive */
@media (max-width: 1024px) {
  .hero h1 { font-size: 2.6rem; }
  .hero-content { max-width: 480px; }
  .hero-visual { max-width: 380px; }
  .features-grid { grid-template-columns: repeat(2, 1fr); }
  .categories-grid { grid-template-columns: repeat(2, 1fr); }
  .picks-grid { grid-template-columns: repeat(2, 1fr); }
  .footer-grid { grid-template-columns: repeat(2, 1fr); gap: 32px; }
}
@media (max-width: 768px) {
  .nav { display: none; position: absolute; top: 72px; left: 0; right: 0; background: rgba(8,12,20,0.98); flex-direction: column; padding: 20px 24px; border-bottom: 1px solid var(--border); gap: 4px; }
  .nav.open { display: flex; }
  .nav a { width: 100%; padding: 12px 16px; }
  .menu-toggle { display: flex; }
  .hero { min-height: auto; padding: 120px 0 80px; }
  .hero .container { flex-direction: column; text-align: center; }
  .hero-content { max-width: 100%; }
  .hero h1 { font-size: 2rem; }
  .hero p { margin-left: auto; margin-right: auto; }
  .hero-actions { justify-content: center; }
  .hero-visual { max-width: 100%; margin-top: 2rem; }
  .section { padding: 56px 0; }
  .section-title { font-size: 1.6rem; }
  .features-grid { grid-template-columns: 1fr; }
  .categories-grid { grid-template-columns: 1fr; }
  .news-grid { grid-template-columns: 1fr; }
  .picks-grid { grid-template-columns: 1fr; }
  .stats-grid { grid-template-columns: repeat(2, 1fr); gap: 24px; }
  .stats-grid .stat-item .num { font-size: 2rem; }
  .footer-grid { grid-template-columns: 1fr; gap: 24px; }
  .footer-bottom { flex-direction: column; text-align: center; }
  .cta-box { padding: 40px 24px; }
  .cta-box h2 { font-size: 1.5rem; }
}
@media (max-width: 520px) {
  .container { padding: 0 16px; }
  .hero h1 { font-size: 1.6rem; }
  .hero p { font-size: 0.92rem; }
  .btn-lg { padding: 12px 28px; font-size: 0.9rem; }
  .hero-actions { flex-direction: column; align-items: center; }
  .section-title { font-size: 1.3rem; }
  .stat-item .num { font-size: 1.6rem; }
}

/* roulang page: category1 */
/* ===== Design Variables ===== */
        :root {
            --primary: #f0c040;
            --primary-glow: rgba(240, 192, 64, 0.35);
            --primary-dark: #d4a830;
            --primary-light: #fce38a;
            --bg-dark: #0b0d17;
            --bg-darker: #060810;
            --bg-card: #13172a;
            --bg-card-hover: #1a1f38;
            --bg-section: #0f1322;
            --bg-input: #1e2340;
            --text-main: #f0f2f8;
            --text-secondary: #a8b0cc;
            --text-muted: #6b7299;
            --border-color: #252d4a;
            --border-glow: rgba(240, 192, 64, 0.15);
            --radius: 14px;
            --radius-sm: 8px;
            --radius-lg: 20px;
            --shadow-card: 0 8px 32px rgba(0, 0, 0, 0.35), 0 0 0 1px rgba(240, 192, 64, 0.04);
            --shadow-card-hover: 0 12px 48px rgba(0, 0, 0, 0.5), 0 0 0 1px rgba(240, 192, 64, 0.12);
            --shadow-glow: 0 0 40px rgba(240, 192, 64, 0.08);
            --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
            --container-w: 1200px;
            --header-h: 72px;
        }

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

        /* ===== Scrollbar ===== */
        ::-webkit-scrollbar {
            width: 6px;
        }
        ::-webkit-scrollbar-track {
            background: var(--bg-darker);
        }
        ::-webkit-scrollbar-thumb {
            background: var(--border-color);
            border-radius: 3px;
        }
        ::-webkit-scrollbar-thumb:hover {
            background: var(--text-muted);
        }

        /* ===== Header / Nav ===== */
        .header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            background: rgba(11, 13, 23, 0.88);
            backdrop-filter: blur(18px) saturate(1.4);
            border-bottom: 1px solid var(--border-color);
            height: var(--header-h);
            display: flex;
            align-items: center;
            transition: var(--transition);
        }
        .header .container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            width: 100%;
        }
        .logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 22px;
            font-weight: 800;
            color: var(--text-main);
            letter-spacing: -0.3px;
        }
        .logo .logo-icon {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 38px;
            height: 38px;
            background: linear-gradient(135deg, var(--primary), #ff8a5c);
            color: var(--bg-darker);
            border-radius: 10px;
            font-size: 20px;
            font-weight: 900;
            box-shadow: 0 0 20px var(--primary-glow);
        }
        .logo span:last-child {
            background: linear-gradient(135deg, var(--text-main), var(--primary-light));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .nav {
            display: flex;
            align-items: center;
            gap: 6px;
        }
        .nav a {
            padding: 8px 18px;
            border-radius: var(--radius-sm);
            color: var(--text-secondary);
            font-size: 15px;
            font-weight: 500;
            transition: var(--transition);
            position: relative;
        }
        .nav a::after {
            content: '';
            position: absolute;
            bottom: 2px;
            left: 50%;
            transform: translateX(-50%);
            width: 0;
            height: 2px;
            border-radius: 2px;
            background: var(--primary);
            transition: var(--transition);
            box-shadow: 0 0 12px var(--primary-glow);
        }
        .nav a:hover {
            color: var(--text-main);
        }
        .nav a:hover::after {
            width: 50%;
        }
        .nav a.active {
            color: var(--primary);
            background: rgba(240, 192, 64, 0.08);
        }
        .nav a.active::after {
            width: 70%;
        }
        .nav a.nav-cta {
            background: linear-gradient(135deg, var(--primary), #ff8a5c);
            color: var(--bg-darker);
            font-weight: 700;
            padding: 8px 24px;
            border-radius: 50px;
            box-shadow: 0 0 24px var(--primary-glow);
            margin-left: 10px;
        }
        .nav a.nav-cta::after {
            display: none;
        }
        .nav a.nav-cta:hover {
            transform: translateY(-1px) scale(1.02);
            box-shadow: 0 0 36px var(--primary-glow);
            color: var(--bg-darker);
        }
        .nav-toggle {
            display: none;
            flex-direction: column;
            gap: 5px;
            background: none;
            border: none;
            padding: 6px;
            cursor: pointer;
        }
        .nav-toggle span {
            display: block;
            width: 26px;
            height: 2px;
            background: var(--text-main);
            border-radius: 2px;
            transition: var(--transition);
        }

        /* ===== Hero / Banner ===== */
        .category-hero {
            margin-top: var(--header-h);
            padding: 80px 0 70px;
            position: relative;
            overflow: hidden;
            background: var(--bg-darker);
        }
        .category-hero::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-2.png') center center / cover no-repeat;
            opacity: 0.18;
            z-index: 0;
            mask-image: linear-gradient(to bottom, rgba(0, 0, 0, 0.6), transparent 90%);
            -webkit-mask-image: linear-gradient(to bottom, rgba(0, 0, 0, 0.6), transparent 90%);
        }
        .category-hero::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            right: 0;
            height: 120px;
            background: linear-gradient(to top, var(--bg-dark), transparent);
            z-index: 1;
        }
        .category-hero .container {
            position: relative;
            z-index: 2;
            text-align: center;
        }
        .category-hero h1 {
            font-size: 48px;
            font-weight: 800;
            letter-spacing: -0.5px;
            margin-bottom: 16px;
            background: linear-gradient(135deg, var(--text-main), var(--primary-light));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .category-hero p {
            font-size: 18px;
            color: var(--text-secondary);
            max-width: 680px;
            margin: 0 auto 30px;
        }
        .hero-tags {
            display: flex;
            flex-wrap: wrap;
            justify-content: center;
            gap: 10px;
        }
        .hero-tags .tag {
            display: inline-block;
            padding: 6px 18px;
            border-radius: 50px;
            font-size: 13px;
            font-weight: 500;
            background: rgba(240, 192, 64, 0.08);
            border: 1px solid rgba(240, 192, 64, 0.15);
            color: var(--primary-light);
            transition: var(--transition);
        }
        .hero-tags .tag:hover {
            background: rgba(240, 192, 64, 0.16);
            border-color: var(--primary);
            transform: translateY(-2px);
        }
        .hero-tags .tag i {
            margin-right: 6px;
            font-size: 12px;
        }

        /* ===== Filter Bar ===== */
        .filter-bar {
            background: var(--bg-section);
            border-bottom: 1px solid var(--border-color);
            padding: 16px 0;
            position: sticky;
            top: var(--header-h);
            z-index: 100;
            backdrop-filter: blur(12px);
        }
        .filter-bar .container {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 12px 20px;
        }
        .filter-bar .filter-label {
            font-size: 14px;
            font-weight: 600;
            color: var(--text-secondary);
            display: flex;
            align-items: center;
            gap: 6px;
        }
        .filter-bar .filter-label i {
            color: var(--primary);
        }
        .filter-group {
            display: flex;
            flex-wrap: wrap;
            gap: 8px;
        }
        .filter-group .filter-btn {
            padding: 6px 18px;
            border-radius: 50px;
            font-size: 13px;
            font-weight: 500;
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            color: var(--text-secondary);
            transition: var(--transition);
            cursor: pointer;
        }
        .filter-group .filter-btn:hover {
            border-color: var(--primary);
            color: var(--text-main);
        }
        .filter-group .filter-btn.active {
            background: rgba(240, 192, 64, 0.12);
            border-color: var(--primary);
            color: var(--primary);
            box-shadow: 0 0 20px var(--primary-glow);
        }
        .filter-bar .search-box {
            margin-left: auto;
            display: flex;
            align-items: center;
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: 50px;
            padding: 4px 16px 4px 20px;
            transition: var(--transition);
        }
        .filter-bar .search-box:focus-within {
            border-color: var(--primary);
            box-shadow: 0 0 20px var(--primary-glow);
        }
        .filter-bar .search-box input {
            padding: 8px 0;
            min-width: 180px;
            background: transparent;
            color: var(--text-main);
            font-size: 14px;
        }
        .filter-bar .search-box input::placeholder {
            color: var(--text-muted);
        }
        .filter-bar .search-box button {
            padding: 6px 10px;
            color: var(--text-secondary);
            transition: var(--transition);
        }
        .filter-bar .search-box button:hover {
            color: var(--primary);
        }

        /* ===== Main Content ===== */
        .category-main {
            padding: 60px 0 80px;
        }

        /* ===== Guide Grid ===== */
        .guide-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 28px;
        }
        .guide-card {
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: var(--radius);
            overflow: hidden;
            transition: var(--transition);
            box-shadow: var(--shadow-card);
            display: flex;
            flex-direction: column;
        }
        .guide-card:hover {
            transform: translateY(-6px);
            border-color: rgba(240, 192, 64, 0.2);
            box-shadow: var(--shadow-card-hover);
        }
        .guide-card .card-img {
            position: relative;
            aspect-ratio: 16 / 9;
            overflow: hidden;
            background: var(--bg-darker);
        }
        .guide-card .card-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.5s ease;
        }
        .guide-card:hover .card-img img {
            transform: scale(1.05);
        }
        .guide-card .card-img .badge {
            position: absolute;
            top: 12px;
            left: 12px;
            padding: 4px 14px;
            border-radius: 50px;
            font-size: 12px;
            font-weight: 600;
            background: rgba(240, 192, 64, 0.9);
            color: var(--bg-darker);
            box-shadow: 0 0 20px var(--primary-glow);
        }
        .guide-card .card-img .badge.hot {
            background: rgba(255, 80, 80, 0.9);
            color: #fff;
        }
        .guide-card .card-img .badge.new {
            background: rgba(64, 200, 255, 0.9);
            color: var(--bg-darker);
        }
        .guide-card .card-body {
            padding: 22px 24px 24px;
            flex: 1;
            display: flex;
            flex-direction: column;
        }
        .guide-card .card-body .meta {
            display: flex;
            align-items: center;
            gap: 12px;
            font-size: 13px;
            color: var(--text-muted);
            margin-bottom: 10px;
        }
        .guide-card .card-body .meta span {
            display: flex;
            align-items: center;
            gap: 4px;
        }
        .guide-card .card-body .meta i {
            font-size: 12px;
        }
        .guide-card .card-body h3 {
            font-size: 20px;
            font-weight: 700;
            margin-bottom: 10px;
            line-height: 1.35;
        }
        .guide-card .card-body h3 a {
            color: var(--text-main);
        }
        .guide-card .card-body h3 a:hover {
            color: var(--primary);
        }
        .guide-card .card-body p {
            font-size: 15px;
            color: var(--text-secondary);
            line-height: 1.6;
            flex: 1;
            margin-bottom: 16px;
        }
        .guide-card .card-body .tags {
            display: flex;
            flex-wrap: wrap;
            gap: 6px;
            margin-bottom: 16px;
        }
        .guide-card .card-body .tags span {
            padding: 3px 12px;
            border-radius: 50px;
            font-size: 12px;
            font-weight: 500;
            background: rgba(240, 192, 64, 0.06);
            border: 1px solid rgba(240, 192, 64, 0.1);
            color: var(--text-secondary);
        }
        .guide-card .card-body .card-footer {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding-top: 14px;
            border-top: 1px solid var(--border-color);
        }
        .guide-card .card-body .card-footer .author {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 13px;
            color: var(--text-muted);
        }
        .guide-card .card-body .card-footer .author .avatar {
            width: 28px;
            height: 28px;
            border-radius: 50%;
            background: linear-gradient(135deg, var(--primary), #ff8a5c);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 12px;
            font-weight: 700;
            color: var(--bg-darker);
        }
        .guide-card .card-body .card-footer .read-more {
            font-size: 13px;
            font-weight: 600;
            color: var(--primary);
            display: flex;
            align-items: center;
            gap: 4px;
            transition: var(--transition);
        }
        .guide-card .card-body .card-footer .read-more:hover {
            gap: 8px;
            color: var(--primary-light);
        }

        /* ===== Pagination ===== */
        .pagination {
            display: flex;
            justify-content: center;
            align-items: center;
            gap: 8px;
            margin-top: 50px;
        }
        .pagination a,
        .pagination span {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            min-width: 42px;
            height: 42px;
            border-radius: var(--radius-sm);
            font-size: 15px;
            font-weight: 500;
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            color: var(--text-secondary);
            transition: var(--transition);
        }
        .pagination a:hover {
            border-color: var(--primary);
            color: var(--primary);
            background: rgba(240, 192, 64, 0.06);
        }
        .pagination a.active,
        .pagination span.active {
            background: rgba(240, 192, 64, 0.12);
            border-color: var(--primary);
            color: var(--primary);
            box-shadow: 0 0 20px var(--primary-glow);
        }
        .pagination .dots {
            border: none;
            background: none;
            color: var(--text-muted);
            min-width: 20px;
        }

        /* ===== Hot Guides Section ===== */
        .hot-guides {
            padding: 60px 0;
            background: var(--bg-section);
            border-top: 1px solid var(--border-color);
            border-bottom: 1px solid var(--border-color);
        }
        .section-header {
            display: flex;
            align-items: center;
            justify-content: space-between;
            margin-bottom: 36px;
        }
        .section-header h2 {
            font-size: 30px;
            font-weight: 700;
            display: flex;
            align-items: center;
            gap: 12px;
        }
        .section-header h2 i {
            color: var(--primary);
            font-size: 28px;
        }
        .section-header .section-link {
            font-size: 15px;
            font-weight: 600;
            color: var(--text-secondary);
            display: flex;
            align-items: center;
            gap: 6px;
            transition: var(--transition);
        }
        .section-header .section-link:hover {
            color: var(--primary);
            gap: 10px;
        }
        .hot-list {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
        }
        .hot-item {
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: var(--radius);
            padding: 20px 22px;
            transition: var(--transition);
            display: flex;
            flex-direction: column;
            gap: 10px;
        }
        .hot-item:hover {
            border-color: rgba(240, 192, 64, 0.15);
            transform: translateY(-3px);
            box-shadow: var(--shadow-card-hover);
        }
        .hot-item .rank {
            font-size: 28px;
            font-weight: 800;
            color: rgba(240, 192, 64, 0.15);
            line-height: 1;
            transition: var(--transition);
        }
        .hot-item:hover .rank {
            color: rgba(240, 192, 64, 0.3);
        }
        .hot-item h4 {
            font-size: 17px;
            font-weight: 600;
            line-height: 1.35;
        }
        .hot-item h4 a {
            color: var(--text-main);
        }
        .hot-item h4 a:hover {
            color: var(--primary);
        }
        .hot-item .hot-meta {
            font-size: 13px;
            color: var(--text-muted);
            display: flex;
            align-items: center;
            gap: 12px;
        }
        .hot-item .hot-meta span {
            display: flex;
            align-items: center;
            gap: 4px;
        }
        .hot-item .hot-meta i {
            font-size: 12px;
        }
        .hot-item .hot-tag {
            align-self: flex-start;
            padding: 2px 12px;
            border-radius: 50px;
            font-size: 11px;
            font-weight: 600;
            background: rgba(240, 192, 64, 0.08);
            border: 1px solid rgba(240, 192, 64, 0.1);
            color: var(--primary-light);
        }

        /* ===== Categories Section ===== */
        .cat-section {
            padding: 60px 0;
        }
        .cat-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
        }
        .cat-card {
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: var(--radius);
            padding: 28px 24px;
            text-align: center;
            transition: var(--transition);
            cursor: pointer;
        }
        .cat-card:hover {
            border-color: rgba(240, 192, 64, 0.2);
            transform: translateY(-4px);
            box-shadow: var(--shadow-card-hover);
        }
        .cat-card .cat-icon {
            width: 56px;
            height: 56px;
            margin: 0 auto 16px;
            border-radius: 16px;
            background: rgba(240, 192, 64, 0.08);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 26px;
            color: var(--primary);
            transition: var(--transition);
        }
        .cat-card:hover .cat-icon {
            background: rgba(240, 192, 64, 0.16);
            transform: scale(1.05);
        }
        .cat-card h4 {
            font-size: 17px;
            font-weight: 600;
            margin-bottom: 6px;
        }
        .cat-card p {
            font-size: 13px;
            color: var(--text-muted);
            line-height: 1.5;
        }

        /* ===== FAQ ===== */
        .faq-section {
            padding: 60px 0;
            background: var(--bg-section);
            border-top: 1px solid var(--border-color);
        }
        .faq-grid {
            max-width: 820px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 12px;
        }
        .faq-item {
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-sm);
            overflow: hidden;
            transition: var(--transition);
        }
        .faq-item:hover {
            border-color: rgba(240, 192, 64, 0.1);
        }
        .faq-item summary {
            padding: 18px 24px;
            font-size: 16px;
            font-weight: 600;
            cursor: pointer;
            display: flex;
            align-items: center;
            gap: 12px;
            color: var(--text-main);
            transition: var(--transition);
            list-style: none;
        }
        .faq-item summary::-webkit-details-marker {
            display: none;
        }
        .faq-item summary .faq-icon {
            width: 28px;
            height: 28px;
            border-radius: 50%;
            background: rgba(240, 192, 64, 0.08);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 14px;
            color: var(--primary);
            flex-shrink: 0;
            transition: var(--transition);
        }
        .faq-item details[open] summary .faq-icon {
            background: rgba(240, 192, 64, 0.2);
            transform: rotate(45deg);
        }
        .faq-item summary:hover {
            color: var(--primary-light);
        }
        .faq-item .faq-answer {
            padding: 0 24px 20px 64px;
            font-size: 15px;
            color: var(--text-secondary);
            line-height: 1.7;
        }

        /* ===== CTA ===== */
        .cta-section {
            padding: 70px 0;
            background: var(--bg-darker);
            position: relative;
            overflow: hidden;
        }
        .cta-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-3.png') center center / cover no-repeat;
            opacity: 0.06;
            z-index: 0;
        }
        .cta-section .container {
            position: relative;
            z-index: 1;
            text-align: center;
        }
        .cta-section h2 {
            font-size: 36px;
            font-weight: 800;
            margin-bottom: 14px;
            letter-spacing: -0.3px;
        }
        .cta-section p {
            font-size: 18px;
            color: var(--text-secondary);
            max-width: 580px;
            margin: 0 auto 32px;
        }
        .cta-section .cta-buttons {
            display: flex;
            flex-wrap: wrap;
            justify-content: center;
            gap: 16px;
        }
        .cta-section .cta-buttons .btn-primary {
            padding: 14px 36px;
            border-radius: 50px;
            font-size: 16px;
            font-weight: 700;
            background: linear-gradient(135deg, var(--primary), #ff8a5c);
            color: var(--bg-darker);
            border: none;
            box-shadow: 0 0 30px var(--primary-glow);
            transition: var(--transition);
            display: inline-flex;
            align-items: center;
            gap: 8px;
        }
        .cta-section .cta-buttons .btn-primary:hover {
            transform: translateY(-2px) scale(1.02);
            box-shadow: 0 0 50px var(--primary-glow);
        }
        .cta-section .cta-buttons .btn-secondary {
            padding: 14px 36px;
            border-radius: 50px;
            font-size: 16px;
            font-weight: 600;
            background: transparent;
            color: var(--text-main);
            border: 1px solid var(--border-color);
            transition: var(--transition);
            display: inline-flex;
            align-items: center;
            gap: 8px;
        }
        .cta-section .cta-buttons .btn-secondary:hover {
            border-color: var(--primary);
            color: var(--primary);
        }

        /* ===== Footer ===== */
        .footer {
            background: var(--bg-darker);
            border-top: 1px solid var(--border-color);
            padding: 60px 0 30px;
        }
        .footer .footer-grid {
            display: grid;
            grid-template-columns: 1.5fr 1fr 1fr 1fr;
            gap: 40px;
            margin-bottom: 40px;
        }
        .footer .footer-brand .logo {
            font-size: 20px;
            margin-bottom: 14px;
        }
        .footer .footer-brand p {
            font-size: 14px;
            color: var(--text-muted);
            line-height: 1.7;
            max-width: 320px;
        }
        .footer .footer-col h4 {
            font-size: 15px;
            font-weight: 700;
            margin-bottom: 18px;
            color: var(--text-main);
            position: relative;
            padding-bottom: 10px;
        }
        .footer .footer-col h4::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 30px;
            height: 2px;
            background: var(--primary);
            border-radius: 2px;
            box-shadow: 0 0 12px var(--primary-glow);
        }
        .footer .footer-col a {
            display: block;
            font-size: 14px;
            color: var(--text-secondary);
            padding: 5px 0;
            transition: var(--transition);
        }
        .footer .footer-col a:hover {
            color: var(--primary);
            padding-left: 4px;
        }
        .footer .footer-bottom {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            justify-content: space-between;
            padding-top: 28px;
            border-top: 1px solid var(--border-color);
            font-size: 13px;
            color: var(--text-muted);
        }
        .footer .footer-bottom .social {
            display: flex;
            gap: 14px;
        }
        .footer .footer-bottom .social a {
            font-size: 20px;
            color: var(--text-muted);
            transition: var(--transition);
        }
        .footer .footer-bottom .social a:hover {
            color: var(--primary);
            transform: translateY(-2px);
        }

        /* ===== Responsive ===== */
        @media (max-width: 1024px) {
            .guide-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .hot-list {
                grid-template-columns: repeat(2, 1fr);
            }
            .cat-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .footer .footer-grid {
                grid-template-columns: 1fr 1fr;
            }
            .category-hero h1 {
                font-size: 38px;
            }
        }

        @media (max-width: 768px) {
            .nav {
                display: none;
            }
            .nav-toggle {
                display: flex;
            }
            .nav.open {
                display: flex;
                flex-direction: column;
                position: absolute;
                top: var(--header-h);
                left: 0;
                right: 0;
                background: rgba(11, 13, 23, 0.96);
                backdrop-filter: blur(18px);
                padding: 20px 24px;
                border-bottom: 1px solid var(--border-color);
                gap: 4px;
            }
            .nav.open a {
                padding: 12px 16px;
                border-radius: var(--radius-sm);
            }
            .nav.open a.nav-cta {
                margin-left: 0;
                margin-top: 8px;
                text-align: center;
            }
            .filter-bar .container {
                flex-direction: column;
                align-items: stretch;
            }
            .filter-bar .search-box {
                margin-left: 0;
                width: 100%;
            }
            .filter-bar .search-box input {
                min-width: 0;
                flex: 1;
            }
            .category-hero {
                padding: 50px 0 50px;
            }
            .category-hero h1 {
                font-size: 30px;
            }
            .category-hero p {
                font-size: 16px;
            }
            .guide-grid {
                grid-template-columns: 1fr;
                gap: 20px;
            }
            .hot-list {
                grid-template-columns: 1fr;
            }
            .cat-grid {
                grid-template-columns: 1fr 1fr;
            }
            .section-header h2 {
                font-size: 24px;
            }
            .cta-section h2 {
                font-size: 28px;
            }
            .footer .footer-grid {
                grid-template-columns: 1fr;
                gap: 30px;
            }
            .footer .footer-bottom {
                flex-direction: column;
                gap: 16px;
                text-align: center;
            }
        }

        @media (max-width: 520px) {
            .container {
                padding: 0 16px;
            }
            .category-hero h1 {
                font-size: 26px;
            }
            .cat-grid {
                grid-template-columns: 1fr;
            }
            .hero-tags .tag {
                font-size: 12px;
                padding: 4px 14px;
            }
            .guide-card .card-body {
                padding: 16px 18px 20px;
            }
            .guide-card .card-body h3 {
                font-size: 18px;
            }
            .pagination a,
            .pagination span {
                min-width: 36px;
                height: 36px;
                font-size: 13px;
            }
            .filter-group .filter-btn {
                font-size: 12px;
                padding: 4px 14px;
            }
            .faq-item summary {
                padding: 14px 16px;
                font-size: 15px;
            }
            .faq-item .faq-answer {
                padding: 0 16px 16px 52px;
                font-size: 14px;
            }
            .cta-section .cta-buttons .btn-primary,
            .cta-section .cta-buttons .btn-secondary {
                width: 100%;
                justify-content: center;
            }
        }

/* roulang page: article */
/* ===== 设计变量 ===== */
        :root {
            --primary: #ff2d55;
            --primary-light: #ff5e7a;
            --primary-dark: #cc1a3e;
            --accent: #0ae0ff;
            --accent-glow: rgba(10, 224, 255, 0.3);
            --bg-dark: #0a0e17;
            --bg-card: #111827;
            --bg-card-hover: #1a2332;
            --bg-section: #0d1321;
            --text-primary: #f1f5f9;
            --text-secondary: #94a3b8;
            --text-muted: #64748b;
            --border-color: #1e293b;
            --border-glow: rgba(255, 45, 85, 0.2);
            --radius: 12px;
            --radius-sm: 8px;
            --radius-lg: 20px;
            --shadow: 0 4px 20px rgba(0, 0, 0, 0.4);
            --shadow-lg: 0 12px 40px rgba(0, 0, 0, 0.6);
            --shadow-glow: 0 0 30px rgba(255, 45, 85, 0.15);
            --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            --font: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
            --max-width: 1200px;
            --nav-height: 72px;
        }

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

        /* ===== 容器 ===== */
        .container {
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 24px;
        }
        @media (max-width: 768px) {
            .container {
                padding: 0 16px;
            }
        }

        /* ===== 导航栏 ===== */
        .header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            background: rgba(10, 14, 23, 0.92);
            backdrop-filter: blur(20px);
            -webkit-backdrop-filter: blur(20px);
            border-bottom: 1px solid var(--border-color);
            height: var(--nav-height);
            transition: background var(--transition), border-color var(--transition);
        }
        .header.scrolled {
            background: rgba(10, 14, 23, 0.98);
            border-bottom-color: var(--primary);
        }
        .header .container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 100%;
        }
        .logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 22px;
            font-weight: 800;
            color: var(--text-primary);
            letter-spacing: -0.5px;
            transition: color var(--transition);
        }
        .logo:hover {
            color: var(--accent);
        }
        .logo-icon {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 38px;
            height: 38px;
            background: linear-gradient(135deg, var(--primary), var(--primary-dark));
            border-radius: 10px;
            font-size: 18px;
            color: #fff;
            font-weight: 700;
            box-shadow: 0 0 20px rgba(255, 45, 85, 0.3);
        }
        .nav {
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .nav a {
            padding: 8px 18px;
            border-radius: var(--radius-sm);
            font-size: 15px;
            font-weight: 500;
            color: var(--text-secondary);
            transition: all var(--transition);
            position: relative;
            letter-spacing: 0.3px;
        }
        .nav a::after {
            content: '';
            position: absolute;
            bottom: 2px;
            left: 50%;
            transform: translateX(-50%);
            width: 0;
            height: 2px;
            background: var(--accent);
            border-radius: 2px;
            transition: width var(--transition);
            box-shadow: 0 0 10px var(--accent-glow);
        }
        .nav a:hover {
            color: var(--text-primary);
            background: rgba(255, 255, 255, 0.04);
        }
        .nav a:hover::after {
            width: 60%;
        }
        .nav a.active {
            color: var(--accent);
            background: rgba(10, 224, 255, 0.08);
        }
        .nav a.active::after {
            width: 60%;
            background: var(--accent);
            box-shadow: 0 0 14px var(--accent-glow);
        }
        .nav-cta {
            background: linear-gradient(135deg, var(--primary), var(--primary-dark)) !important;
            color: #fff !important;
            padding: 8px 24px !important;
            border-radius: var(--radius-sm) !important;
            font-weight: 600 !important;
            box-shadow: 0 4px 16px rgba(255, 45, 85, 0.3);
            transition: all var(--transition) !important;
        }
        .nav-cta::after {
            display: none !important;
        }
        .nav-cta:hover {
            transform: translateY(-2px);
            box-shadow: 0 8px 28px rgba(255, 45, 85, 0.45) !important;
            background: linear-gradient(135deg, var(--primary-light), var(--primary)) !important;
        }
        .nav-toggle {
            display: none;
            flex-direction: column;
            gap: 5px;
            cursor: pointer;
            padding: 6px;
            background: none;
            border: none;
        }
        .nav-toggle span {
            width: 26px;
            height: 2.5px;
            background: var(--text-primary);
            border-radius: 4px;
            transition: all var(--transition);
        }
        .nav-toggle.active span:nth-child(1) {
            transform: rotate(45deg) translate(5px, 5px);
        }
        .nav-toggle.active span:nth-child(2) {
            opacity: 0;
        }
        .nav-toggle.active span:nth-child(3) {
            transform: rotate(-45deg) translate(5px, -5px);
        }

        @media (max-width: 768px) {
            .nav-toggle {
                display: flex;
            }
            .nav {
                position: fixed;
                top: var(--nav-height);
                left: 0;
                right: 0;
                background: rgba(10, 14, 23, 0.98);
                backdrop-filter: blur(20px);
                flex-direction: column;
                padding: 20px 24px;
                gap: 6px;
                border-bottom: 2px solid var(--border-color);
                transform: translateY(-120%);
                opacity: 0;
                transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
                pointer-events: none;
                box-shadow: var(--shadow-lg);
            }
            .nav.open {
                transform: translateY(0);
                opacity: 1;
                pointer-events: all;
            }
            .nav a {
                width: 100%;
                padding: 12px 16px;
                font-size: 16px;
            }
            .nav a::after {
                display: none;
            }
            .nav a.active {
                border-left: 3px solid var(--accent);
                background: rgba(10, 224, 255, 0.06);
            }
            .nav-cta {
                text-align: center;
                margin-top: 6px;
            }
        }

        /* ===== 文章横幅 ===== */
        .article-banner {
            margin-top: var(--nav-height);
            padding: 80px 0 60px;
            background: linear-gradient(135deg, var(--bg-section) 0%, #0f1a2e 50%, var(--bg-dark) 100%);
            border-bottom: 1px solid var(--border-color);
            position: relative;
            overflow: hidden;
        }
        .article-banner::before {
            content: '';
            position: absolute;
            top: -40%;
            right: -10%;
            width: 500px;
            height: 500px;
            background: radial-gradient(circle, rgba(255, 45, 85, 0.08), transparent 70%);
            pointer-events: none;
        }
        .article-banner::after {
            content: '';
            position: absolute;
            bottom: -30%;
            left: -5%;
            width: 400px;
            height: 400px;
            background: radial-gradient(circle, rgba(10, 224, 255, 0.06), transparent 70%);
            pointer-events: none;
        }
        .article-banner .container {
            position: relative;
            z-index: 1;
        }
        .article-breadcrumb {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 14px;
            color: var(--text-muted);
            margin-bottom: 24px;
            flex-wrap: wrap;
        }
        .article-breadcrumb a {
            color: var(--text-secondary);
            transition: color var(--transition);
        }
        .article-breadcrumb a:hover {
            color: var(--accent);
        }
        .article-breadcrumb span {
            color: var(--text-muted);
        }
        .article-breadcrumb .sep {
            color: var(--text-muted);
            font-size: 12px;
        }
        .article-meta-top {
            display: flex;
            align-items: center;
            gap: 16px;
            flex-wrap: wrap;
            margin-bottom: 20px;
        }
        .article-category {
            display: inline-block;
            padding: 4px 16px;
            background: rgba(255, 45, 85, 0.12);
            color: var(--primary-light);
            border-radius: 20px;
            font-size: 13px;
            font-weight: 600;
            border: 1px solid rgba(255, 45, 85, 0.2);
        }
        .article-date {
            font-size: 14px;
            color: var(--text-muted);
            display: flex;
            align-items: center;
            gap: 6px;
        }
        .article-date i {
            font-size: 13px;
        }
        .article-banner h1 {
            font-size: clamp(28px, 4vw, 48px);
            font-weight: 800;
            line-height: 1.25;
            color: var(--text-primary);
            max-width: 900px;
            letter-spacing: -0.5px;
        }
        .article-banner .article-desc {
            font-size: 18px;
            color: var(--text-secondary);
            margin-top: 16px;
            max-width: 700px;
            line-height: 1.6;
        }

        @media (max-width: 768px) {
            .article-banner {
                padding: 60px 0 36px;
            }
            .article-banner h1 {
                font-size: 26px;
            }
            .article-banner .article-desc {
                font-size: 16px;
            }
        }

        /* ===== 文章正文 ===== */
        .article-section {
            padding: 60px 0 80px;
            background: var(--bg-dark);
        }
        .article-layout {
            display: grid;
            grid-template-columns: 1fr 320px;
            gap: 48px;
            align-items: start;
        }
        .article-content {
            background: var(--bg-card);
            border-radius: var(--radius);
            border: 1px solid var(--border-color);
            padding: 40px 44px;
            box-shadow: var(--shadow);
            transition: border-color var(--transition);
        }
        .article-content:hover {
            border-color: rgba(255, 45, 85, 0.15);
        }
        .article-content .post-body {
            font-size: 17px;
            line-height: 1.85;
            color: var(--text-secondary);
        }
        .article-content .post-body p {
            margin-bottom: 1.4em;
            color: var(--text-secondary);
        }
        .article-content .post-body h2 {
            font-size: 26px;
            color: var(--text-primary);
            margin: 1.6em 0 0.6em;
            border-left: 4px solid var(--primary);
            padding-left: 16px;
        }
        .article-content .post-body h3 {
            font-size: 20px;
            color: var(--text-primary);
            margin: 1.4em 0 0.5em;
        }
        .article-content .post-body ul,
        .article-content .post-body ol {
            margin: 1em 0;
            padding-left: 24px;
            color: var(--text-secondary);
        }
        .article-content .post-body ul {
            list-style: disc;
        }
        .article-content .post-body ol {
            list-style: decimal;
        }
        .article-content .post-body li {
            margin-bottom: 6px;
        }
        .article-content .post-body img {
            border-radius: var(--radius-sm);
            margin: 1.6em 0;
            box-shadow: var(--shadow);
        }
        .article-content .post-body blockquote {
            border-left: 4px solid var(--accent);
            padding: 16px 20px;
            margin: 1.6em 0;
            background: rgba(10, 224, 255, 0.04);
            border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
            color: var(--text-secondary);
            font-style: italic;
        }
        .article-content .post-body a {
            color: var(--accent);
            text-decoration: underline;
            text-underline-offset: 2px;
        }
        .article-content .post-body a:hover {
            color: var(--primary-light);
        }
        .article-content .post-body code {
            background: rgba(255, 255, 255, 0.06);
            padding: 2px 10px;
            border-radius: 4px;
            font-size: 0.9em;
            color: var(--accent);
            border: 1px solid var(--border-color);
        }
        .article-content .post-body pre {
            background: var(--bg-dark);
            padding: 20px 24px;
            border-radius: var(--radius-sm);
            overflow-x: auto;
            border: 1px solid var(--border-color);
            margin: 1.6em 0;
        }
        .article-content .post-body pre code {
            background: none;
            border: none;
            padding: 0;
            color: var(--text-secondary);
        }
        .article-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
            margin-top: 36px;
            padding-top: 24px;
            border-top: 1px solid var(--border-color);
        }
        .article-tags .tag {
            display: inline-block;
            padding: 4px 14px;
            background: rgba(10, 224, 255, 0.06);
            border: 1px solid rgba(10, 224, 255, 0.12);
            border-radius: 20px;
            font-size: 13px;
            color: var(--text-secondary);
            transition: all var(--transition);
        }
        .article-tags .tag:hover {
            background: rgba(10, 224, 255, 0.12);
            color: var(--accent);
            border-color: var(--accent);
        }

        /* ===== 侧边栏 ===== */
        .article-sidebar {
            display: flex;
            flex-direction: column;
            gap: 32px;
        }
        .sidebar-card {
            background: var(--bg-card);
            border-radius: var(--radius);
            border: 1px solid var(--border-color);
            padding: 28px 24px;
            box-shadow: var(--shadow);
            transition: border-color var(--transition);
        }
        .sidebar-card:hover {
            border-color: rgba(255, 45, 85, 0.12);
        }
        .sidebar-card h3 {
            font-size: 17px;
            font-weight: 700;
            margin-bottom: 16px;
            display: flex;
            align-items: center;
            gap: 10px;
            color: var(--text-primary);
        }
        .sidebar-card h3 i {
            color: var(--primary);
            font-size: 16px;
        }
        .sidebar-list {
            display: flex;
            flex-direction: column;
            gap: 12px;
        }
        .sidebar-list a {
            display: flex;
            align-items: center;
            gap: 12px;
            padding: 10px 14px;
            border-radius: var(--radius-sm);
            background: rgba(255, 255, 255, 0.02);
            border: 1px solid transparent;
            transition: all var(--transition);
            color: var(--text-secondary);
            font-size: 14px;
            line-height: 1.4;
        }
        .sidebar-list a:hover {
            background: rgba(255, 45, 85, 0.05);
            border-color: rgba(255, 45, 85, 0.1);
            color: var(--text-primary);
            transform: translateX(4px);
        }
        .sidebar-list a .num {
            width: 26px;
            height: 26px;
            display: flex;
            align-items: center;
            justify-content: center;
            border-radius: 6px;
            background: rgba(10, 224, 255, 0.06);
            color: var(--accent);
            font-size: 12px;
            font-weight: 700;
            flex-shrink: 0;
        }
        .sidebar-list a:hover .num {
            background: rgba(255, 45, 85, 0.12);
            color: var(--primary-light);
        }
        .sidebar-cta {
            display: block;
            text-align: center;
            padding: 14px 20px;
            background: linear-gradient(135deg, var(--primary), var(--primary-dark));
            color: #fff;
            border-radius: var(--radius-sm);
            font-weight: 600;
            font-size: 15px;
            transition: all var(--transition);
            box-shadow: 0 4px 16px rgba(255, 45, 85, 0.25);
        }
        .sidebar-cta:hover {
            transform: translateY(-2px);
            box-shadow: 0 8px 28px rgba(255, 45, 85, 0.4);
            color: #fff;
        }
        .sidebar-img {
            border-radius: var(--radius-sm);
            overflow: hidden;
            margin-bottom: 16px;
        }
        .sidebar-img img {
            width: 100%;
            height: 180px;
            object-fit: cover;
            border-radius: var(--radius-sm);
            transition: transform 0.5s ease;
        }
        .sidebar-img:hover img {
            transform: scale(1.03);
        }

        @media (max-width: 1024px) {
            .article-layout {
                grid-template-columns: 1fr 280px;
                gap: 32px;
            }
            .article-content {
                padding: 32px 28px;
            }
        }
        @media (max-width: 768px) {
            .article-layout {
                grid-template-columns: 1fr;
                gap: 32px;
            }
            .article-content {
                padding: 24px 20px;
            }
            .article-content .post-body {
                font-size: 16px;
            }
            .article-content .post-body h2 {
                font-size: 22px;
            }
        }

        /* ===== 相关推荐 ===== */
        .related-section {
            padding: 60px 0 80px;
            background: var(--bg-section);
            border-top: 1px solid var(--border-color);
        }
        .related-section .section-title {
            font-size: 28px;
            font-weight: 800;
            margin-bottom: 12px;
            text-align: center;
        }
        .related-section .section-sub {
            text-align: center;
            color: var(--text-muted);
            margin-bottom: 40px;
            font-size: 16px;
        }
        .related-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }
        .related-card {
            background: var(--bg-card);
            border-radius: var(--radius);
            border: 1px solid var(--border-color);
            overflow: hidden;
            transition: all var(--transition);
            box-shadow: var(--shadow);
        }
        .related-card:hover {
            transform: translateY(-6px);
            border-color: rgba(255, 45, 85, 0.2);
            box-shadow: var(--shadow-lg), var(--shadow-glow);
        }
        .related-card .card-img {
            height: 180px;
            overflow: hidden;
        }
        .related-card .card-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.5s ease;
        }
        .related-card:hover .card-img img {
            transform: scale(1.05);
        }
        .related-card .card-body {
            padding: 20px 22px 24px;
        }
        .related-card .card-body h4 {
            font-size: 17px;
            font-weight: 700;
            margin-bottom: 8px;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .related-card .card-body h4 a {
            color: var(--text-primary);
            transition: color var(--transition);
        }
        .related-card .card-body h4 a:hover {
            color: var(--accent);
        }
        .related-card .card-body p {
            font-size: 14px;
            color: var(--text-muted);
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .related-card .card-meta {
            display: flex;
            align-items: center;
            justify-content: space-between;
            margin-top: 14px;
            font-size: 13px;
            color: var(--text-muted);
        }
        .related-card .card-meta .cat {
            padding: 2px 12px;
            background: rgba(255, 45, 85, 0.08);
            border-radius: 12px;
            color: var(--primary-light);
            font-size: 12px;
            font-weight: 600;
        }

        @media (max-width: 1024px) {
            .related-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }
        @media (max-width: 640px) {
            .related-grid {
                grid-template-columns: 1fr;
            }
            .related-section .section-title {
                font-size: 22px;
            }
        }

        /* ===== CTA ===== */
        .cta-section {
            padding: 60px 0;
            background: linear-gradient(135deg, var(--bg-section) 0%, #0f1a2e 100%);
            border-top: 1px solid var(--border-color);
            border-bottom: 1px solid var(--border-color);
        }
        .cta-box {
            background: linear-gradient(135deg, rgba(255, 45, 85, 0.08), rgba(10, 224, 255, 0.04));
            border: 1px solid rgba(255, 45, 85, 0.15);
            border-radius: var(--radius-lg);
            padding: 48px 56px;
            text-align: center;
            box-shadow: var(--shadow-lg);
            position: relative;
            overflow: hidden;
        }
        .cta-box::before {
            content: '';
            position: absolute;
            top: -60%;
            left: -20%;
            width: 500px;
            height: 500px;
            background: radial-gradient(circle, rgba(255, 45, 85, 0.06), transparent 70%);
            pointer-events: none;
        }
        .cta-box h2 {
            font-size: 32px;
            font-weight: 800;
            margin-bottom: 14px;
            position: relative;
        }
        .cta-box p {
            font-size: 17px;
            color: var(--text-secondary);
            max-width: 600px;
            margin: 0 auto 28px;
            position: relative;
        }
        .cta-box .btn-group {
            display: flex;
            gap: 16px;
            justify-content: center;
            flex-wrap: wrap;
            position: relative;
        }
        .cta-box .btn-primary {
            padding: 14px 36px;
            background: linear-gradient(135deg, var(--primary), var(--primary-dark));
            color: #fff;
            border-radius: var(--radius-sm);
            font-weight: 700;
            font-size: 16px;
            transition: all var(--transition);
            box-shadow: 0 4px 20px rgba(255, 45, 85, 0.3);
            display: inline-flex;
            align-items: center;
            gap: 10px;
        }
        .cta-box .btn-primary:hover {
            transform: translateY(-3px);
            box-shadow: 0 10px 32px rgba(255, 45, 85, 0.45);
            color: #fff;
        }
        .cta-box .btn-secondary {
            padding: 14px 36px;
            background: transparent;
            color: var(--accent);
            border-radius: var(--radius-sm);
            font-weight: 600;
            font-size: 16px;
            border: 2px solid rgba(10, 224, 255, 0.2);
            transition: all var(--transition);
            display: inline-flex;
            align-items: center;
            gap: 10px;
        }
        .cta-box .btn-secondary:hover {
            background: rgba(10, 224, 255, 0.06);
            border-color: var(--accent);
            transform: translateY(-3px);
            color: var(--accent);
        }

        @media (max-width: 768px) {
            .cta-box {
                padding: 32px 24px;
            }
            .cta-box h2 {
                font-size: 24px;
            }
            .cta-box p {
                font-size: 15px;
            }
        }

        /* ===== 页脚 ===== */
        .footer {
            background: var(--bg-card);
            border-top: 1px solid var(--border-color);
            padding: 60px 0 0;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 1.5fr 1fr 1fr 1fr;
            gap: 40px;
            padding-bottom: 40px;
            border-bottom: 1px solid var(--border-color);
        }
        .footer-brand .logo {
            font-size: 20px;
            margin-bottom: 12px;
        }
        .footer-brand p {
            font-size: 14px;
            color: var(--text-muted);
            line-height: 1.7;
            max-width: 320px;
        }
        .footer-col h4 {
            font-size: 15px;
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: 16px;
            letter-spacing: 0.5px;
        }
        .footer-col a {
            display: block;
            padding: 5px 0;
            font-size: 14px;
            color: var(--text-secondary);
            transition: color var(--transition);
        }
        .footer-col a:hover {
            color: var(--accent);
        }
        .footer-bottom {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 24px 0;
            flex-wrap: wrap;
            gap: 16px;
        }
        .footer-bottom p {
            font-size: 13px;
            color: var(--text-muted);
        }
        .social {
            display: flex;
            gap: 12px;
        }
        .social a {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 36px;
            height: 36px;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.04);
            border: 1px solid var(--border-color);
            font-size: 16px;
            color: var(--text-secondary);
            transition: all var(--transition);
        }
        .social a:hover {
            background: rgba(255, 45, 85, 0.1);
            border-color: var(--primary);
            color: var(--primary-light);
            transform: translateY(-2px);
        }

        @media (max-width: 1024px) {
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 32px;
            }
        }
        @media (max-width: 640px) {
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
        }

        /* ===== 内容未找到 ===== */
        .not-found-box {
            text-align: center;
            padding: 80px 24px;
            background: var(--bg-card);
            border-radius: var(--radius);
            border: 1px solid var(--border-color);
        }
        .not-found-box .icon {
            font-size: 56px;
            margin-bottom: 20px;
            opacity: 0.5;
        }
        .not-found-box h2 {
            font-size: 28px;
            margin-bottom: 12px;
        }
        .not-found-box p {
            color: var(--text-muted);
            margin-bottom: 24px;
        }
        .not-found-box .btn-back {
            display: inline-block;
            padding: 12px 32px;
            background: linear-gradient(135deg, var(--primary), var(--primary-dark));
            color: #fff;
            border-radius: var(--radius-sm);
            font-weight: 600;
            transition: all var(--transition);
            box-shadow: 0 4px 16px rgba(255, 45, 85, 0.25);
        }
        .not-found-box .btn-back:hover {
            transform: translateY(-2px);
            box-shadow: 0 8px 28px rgba(255, 45, 85, 0.4);
            color: #fff;
        }

        /* ===== 动画辅助 ===== */
        .fade-in {
            opacity: 0;
            transform: translateY(20px);
            animation: fadeIn 0.6s ease forwards;
        }
        @keyframes fadeIn {
            to {
                opacity: 1;
                transform: translateY(0);
            }
        }
        .delay-1 {
            animation-delay: 0.1s;
        }
        .delay-2 {
            animation-delay: 0.2s;
        }
        .delay-3 {
            animation-delay: 0.3s;
        }

        /* ===== 滚动条 ===== */
        ::-webkit-scrollbar {
            width: 6px;
            height: 6px;
        }
        ::-webkit-scrollbar-track {
            background: var(--bg-dark);
        }
        ::-webkit-scrollbar-thumb {
            background: var(--border-color);
            border-radius: 4px;
        }
        ::-webkit-scrollbar-thumb:hover {
            background: var(--text-muted);
        }

        /* ===== 选中颜色 ===== */
        ::selection {
            background: rgba(255, 45, 85, 0.3);
            color: #fff;
        }