/* roulang page: index */
:root {
  --bg-primary: #0A0E27;
  --bg-secondary: #0D1333;
  --card-bg: rgba(255,255,255,0.05);
  --card-bg-hover: rgba(255,255,255,0.09);
  --accent: #00E5FF;
  --accent-blue: #4D9FFF;
  --text-primary: #E6EAF2;
  --text-secondary: #9AA7B8;
  --text-muted: #5A6478;
  --border-light: rgba(255,255,255,0.1);
  --border-hover: rgba(0,229,255,0.45);
  --glow: rgba(0,229,255,0.35);
  --btn-glow: rgba(0,229,255,0.5);
  --radius: 16px;
  --radius-lg: 20px;
  --radius-sm: 10px;
  --shadow: 0 8px 32px rgba(0,0,0,0.25);
  --shadow-hover: 0 12px 40px rgba(0,0,0,0.4);
  --font-family: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
  --transition: all 0.25s ease;
}
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; font-size: 16px; }
body {
  font-family: var(--font-family);
  background: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}
img { max-width: 100%; display: block; }
a { color: var(--accent); text-decoration: none; transition: var(--transition); }
a:hover { color: #7FE9FF; }
button { font-family: inherit; border: none; background: none; cursor: pointer; }
input, textarea { font-family: inherit; }
.container { max-width: 1200px; margin: 0 auto; padding: 0 30px; }
.section { padding: 80px 0; position: relative; }
.section-head { text-align: center; max-width: 720px; margin: 0 auto 48px; }
.section-head h2 { font-size: 1.8rem; font-weight: 600; letter-spacing: 1px; margin-bottom: 12px; position: relative; display: inline-block; }
.section-head h2::after { content: ''; position: absolute; left: 50%; bottom: -10px; width: 48px; height: 3px; transform: translateX(-50%); border-radius: 3px; background: linear-gradient(90deg, var(--accent), var(--accent-blue)); box-shadow: 0 0 12px var(--glow); }
.section-head p { color: var(--text-secondary); font-size: 0.95rem; margin-top: 14px; }
.glass-card { background: var(--card-bg); border: 1px solid var(--border-light); border-radius: var(--radius); backdrop-filter: blur(12px); -webkit-backdrop-filter: blur(12px); box-shadow: var(--shadow); transition: var(--transition); }
.glass-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-hover); border-color: var(--border-hover); background: var(--card-bg-hover); }
.btn { display: inline-flex; align-items: center; justify-content: center; gap: 8px; border-radius: 10px; font-weight: 600; font-size: 0.95rem; padding: 12px 26px; transition: var(--transition); border: 1px solid transparent; cursor: pointer; user-select: none; }
.btn-primary { background: linear-gradient(135deg, var(--accent), var(--accent-blue)); color: #08122E; box-shadow: 0 0 20px rgba(0,229,255,0.3); }
.btn-primary:hover { box-shadow: 0 0 32px var(--btn-glow); transform: translateY(-2px); color: #08122E; }
.btn-ghost { background: transparent; color: var(--text-primary); border-color: rgba(255,255,255,0.4); }
.btn-ghost:hover { background: rgba(255,255,255,0.1); border-color: var(--accent); color: var(--accent); }
.btn-lg { padding: 15px 38px; font-size: 1rem; border-radius: 12px; }
.btn-sm { padding: 9px 18px; font-size: 0.875rem; border-radius: 8px; }
.badge { display: inline-block; font-size: 0.75rem; font-weight: 600; padding: 4px 12px; border-radius: 30px; background: rgba(0,229,255,0.12); color: var(--accent); border: 1px solid rgba(0,229,255,0.3); letter-spacing: 0.5px; }

/* Header */
.site-header { position: relative; z-index: 100; background: rgba(10,14,39,0.92); border-bottom: 1px solid rgba(255,255,255,0.08); }
.site-header.sticky { position: sticky; top: 0; backdrop-filter: blur(14px); -webkit-backdrop-filter: blur(14px); box-shadow: 0 4px 20px rgba(0,0,0,0.3); }
.header-main { padding: 14px 0; }
.header-main-row { display: flex; align-items: center; justify-content: space-between; gap: 20px; }
.brand { display: flex; align-items: center; gap: 10px; font-size: 1.15rem; font-weight: 700; color: var(--text-primary); white-space: nowrap; letter-spacing: 1px; }
.brand i { font-size: 1.5rem; color: var(--accent); filter: drop-shadow(0 0 8px rgba(0,229,255,0.5)); }
.brand:hover { color: var(--accent); }
.nav-search { display: flex; align-items: center; background: var(--card-bg); border: 1px solid var(--border-light); border-radius: 30px; padding: 4px 6px 4px 18px; flex: 0 1 440px; transition: var(--transition); }
.nav-search:focus-within { border-color: var(--border-hover); box-shadow: 0 0 16px rgba(0,229,255,0.15); }
.nav-search input { border: none; background: transparent; color: var(--text-primary); width: 100%; font-size: 0.9rem; outline: none; }
.nav-search input::placeholder { color: var(--text-muted); }
.nav-search button { width: 34px; height: 34px; border-radius: 50%; background: linear-gradient(135deg, var(--accent), var(--accent-blue)); color: #08122E; display: flex; align-items: center; justify-content: center; transition: var(--transition); font-size: 0.85rem; }
.nav-search button:hover { box-shadow: 0 0 14px var(--glow); }
.header-cta { flex-shrink: 0; }
.mobile-toggle { display: none; width: 40px; height: 40px; border-radius: 10px; color: var(--text-primary); align-items: center; justify-content: center; font-size: 1.2rem; background: var(--card-bg); border: 1px solid var(--border-light); }
.header-nav { border-top: 1px solid rgba(255,255,255,0.06); background: rgba(6,9,26,0.8); backdrop-filter: blur(10px); }
.channel-tabs { display: flex; align-items: center; gap: 10px; padding: 10px 0; flex-wrap: nowrap; }
.channel-tabs .tab { display: inline-flex; align-items: center; gap: 6px; padding: 8px 18px; border-radius: 30px; font-size: 0.9rem; font-weight: 500; color: var(--text-secondary); background: transparent; border: 1px solid transparent; white-space: nowrap; transition: var(--transition); }
.channel-tabs .tab:hover { color: var(--text-primary); background: rgba(255,255,255,0.06); }
.channel-tabs .tab.active { background: linear-gradient(135deg, rgba(0,229,255,0.2), rgba(77,159,255,0.2)); color: var(--accent); border-color: rgba(0,229,255,0.35); box-shadow: 0 0 14px rgba(0,229,255,0.12); }
.channel-tabs .tab i { font-size: 0.85rem; opacity: 0.8; }

/* Hero */
.hero { position: relative; min-height: 90vh; display: flex; align-items: center; background-size: cover; background-position: center; overflow: hidden; }
.hero::before { content: ''; position: absolute; inset: 0; background: linear-gradient(135deg, rgba(10,14,39,0.97) 0%, rgba(13,19,51,0.92) 50%, rgba(10,14,39,0.96) 100%); }
.hero::after { content: ''; position: absolute; inset: 0; background-image: linear-gradient(rgba(0,229,255,0.06) 1px, transparent 1px), linear-gradient(90deg, rgba(0,229,255,0.06) 1px, transparent 1px); background-size: 60px 60px; pointer-events: none; }
.hero .container { position: relative; z-index: 2; }
.hero-inner { max-width: 820px; padding: 60px 0; }
.hero h1 { font-size: clamp(2.4rem, 5vw, 3.6rem); font-weight: 700; line-height: 1.25; letter-spacing: 1px; margin-bottom: 20px; }
.hero h1 .hero-highlight { display: block; background: linear-gradient(90deg, var(--accent), var(--accent-blue)); -webkit-background-clip: text; background-clip: text; -webkit-text-fill-color: transparent; font-size: 0.75em; margin-top: 10px; letter-spacing: 2px; }
.hero-sub { font-size: 1.05rem; color: var(--text-secondary); max-width: 580px; margin-bottom: 34px; line-height: 1.8; }
.hero-actions { display: flex; flex-wrap: wrap; gap: 16px; margin-bottom: 48px; }
.hero-anchors { display: flex; flex-wrap: wrap; gap: 28px; }
.hero-anchors a { display: inline-flex; align-items: center; gap: 8px; color: var(--text-secondary); font-size: 0.875rem; border: 1px solid rgba(255,255,255,0.12); padding: 8px 16px; border-radius: 30px; background: rgba(255,255,255,0.03); transition: var(--transition); }
.hero-anchors a i { color: var(--accent); font-size: 0.85rem; }
.hero-anchors a:hover { color: var(--accent); border-color: var(--border-hover); background: rgba(0,229,255,0.06); transform: translateY(-2px); }

/* Latest / CMS */
.latest-section { background: var(--bg-secondary); }
.latest-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 30px; }
.news-card { display: flex; flex-direction: column; gap: 12px; padding: 28px; min-height: 200px; color: var(--text-primary); }
.news-card:hover { color: var(--text-primary); }
.news-card .badge { align-self: flex-start; }
.news-card h3 { font-size: 1.15rem; font-weight: 600; line-height: 1.5; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
.news-card p { font-size: 0.9rem; color: var(--text-secondary); line-height: 1.65; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; flex: 1; }
.news-card .date { font-size: 0.8rem; color: var(--text-muted); display: flex; align-items: center; gap: 6px; }
.news-card .date i { font-size: 0.75rem; }
.latest-empty { grid-column: 1 / -1; text-align: center; padding: 60px 20px; color: var(--text-secondary); font-size: 0.95rem; background: var(--card-bg); border-radius: var(--radius); border: 1px dashed var(--border-light); }

/* Features */
.features-section { background: var(--bg-primary); }
.features-list { display: grid; grid-template-columns: repeat(2, 1fr); gap: 24px 40px; max-width: 1080px; margin: 0 auto; }
.feature-item { display: flex; gap: 18px; padding: 22px; border-radius: 14px; background: var(--card-bg); border: 1px solid var(--border-light); transition: var(--transition); }
.feature-item:hover { transform: translateX(6px); border-color: var(--border-hover); box-shadow: 0 4px 20px rgba(0,0,0,0.3); }
.feature-icon { flex-shrink: 0; width: 50px; height: 50px; border-radius: 12px; background: linear-gradient(135deg, rgba(0,229,255,0.15), rgba(77,159,255,0.1)); display: flex; align-items: center; justify-content: center; color: var(--accent); font-size: 1.2rem; border: 1px solid rgba(0,229,255,0.2); }
.feature-text h3 { font-size: 1rem; font-weight: 600; margin-bottom: 6px; color: var(--text-primary); }
.feature-text p { font-size: 0.875rem; color: var(--text-secondary); line-height: 1.6; }

/* Scenes */
.scenes-section { background: linear-gradient(180deg, var(--bg-primary) 0%, var(--bg-secondary) 50%, var(--bg-primary) 100%); }
.scene-row { display: grid; grid-template-columns: 1fr 1fr; gap: 60px; align-items: center; margin-bottom: 60px; }
.scene-row:last-child { margin-bottom: 0; }
.scene-row.reverse .scene-image { order: 2; }
.scene-row.reverse .scene-content { order: 1; }
.scene-image { border-radius: var(--radius-lg); overflow: hidden; border: 1px solid var(--border-light); box-shadow: var(--shadow); position: relative; aspect-ratio: 4/3; }
.scene-image img { width: 100%; height: 100%; object-fit: cover; transition: transform 0.5s ease; }
.scene-row:hover .scene-image img { transform: scale(1.04); }
.scene-image::after { content: ''; position: absolute; inset: 0; background: linear-gradient(180deg, transparent 55%, rgba(10,14,39,0.35)); }
.scene-content h3 { font-size: 1.4rem; font-weight: 600; margin-bottom: 14px; line-height: 1.4; }
.scene-content p { color: var(--text-secondary); line-height: 1.75; margin-bottom: 20px; font-size: 0.95rem; }
.scene-link { display: inline-flex; align-items: center; gap: 8px; font-size: 0.9rem; font-weight: 500; color: var(--accent); }
.scene-link i { transition: transform 0.25s ease; }
.scene-link:hover i { transform: translateX(4px); }

/* Cases */
.cases-section { background: var(--bg-secondary); }
.cases-wrap { display: grid; grid-template-columns: 0.9fr 1.1fr; gap: 30px; max-width: 1080px; margin: 0 auto; }
.cases-left { display: grid; grid-template-columns: 1fr; gap: 24px; }
.case-stat { padding: 32px; }
.case-stat .num { font-size: 2.6rem; font-weight: 700; background: linear-gradient(90deg, var(--accent), var(--accent-blue)); -webkit-background-clip: text; background-clip: text; -webkit-text-fill-color: transparent; font-variant-numeric: tabular-nums; line-height: 1.2; }
.case-stat .label { font-size: 0.875rem; color: var(--text-secondary); margin-top: 8px; display: block; }
.cases-right { display: grid; gap: 24px; }
.case-quote { padding: 30px; position: relative; }
.case-quote::before { content: '\201C'; font-size: 3.5rem; color: var(--accent); opacity: 0.25; position: absolute; top: 14px; left: 20px; line-height: 1; font-family: Georgia, serif; }
.case-quote blockquote { font-size: 0.95rem; line-height: 1.7; color: var(--text-primary); margin-bottom: 16px; font-style: normal; border: none; padding: 0; background: transparent; }
.case-quote .who { font-size: 0.85rem; color: var(--text-secondary); margin-top: 14px; }

/* Pricing */
.pricing-section { background: var(--bg-primary); }
.pricing-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 30px; max-width: 1080px; margin: 0 auto; align-items: stretch; }
.pricing-card { padding: 36px 32px; display: flex; flex-direction: column; gap: 18px; position: relative; }
.pricing-card.recommended { border-color: rgba(0,229,255,0.5); box-shadow: 0 0 40px rgba(0,229,255,0.12), var(--shadow); background: rgba(0,229,255,0.06); }
.pricing-card.recommended::before { content: '推荐'; position: absolute; top: -14px; left: 50%; transform: translateX(-50%); background: linear-gradient(135deg, var(--accent), var(--accent-blue)); color: #08122E; font-size: 0.75rem; font-weight: 700; padding: 4px 16px; border-radius: 30px; letter-spacing: 1px; box-shadow: 0 0 16px rgba(0,229,255,0.4); }
.pricing-card h3 { font-size: 1.2rem; font-weight: 600; }
.pricing-card .price { font-size: 1.6rem; font-weight: 700; color: var(--accent); font-variant-numeric: tabular-nums; }
.pricing-card .price span { font-size: 0.8rem; color: var(--text-muted); font-weight: 400; margin-left: 4px; }
.pricing-card ul { list-style: none; display: flex; flex-direction: column; gap: 10px; flex: 1; }
.pricing-card ul li { font-size: 0.875rem; color: var(--text-secondary); display: flex; align-items: flex-start; gap: 8px; }
.pricing-card ul li i { color: var(--accent); font-size: 0.8rem; margin-top: 4px; flex-shrink: 0; }
.pricing-card .btn { margin-top: 8px; width: 100%; }

/* FAQ */
.faq-section { background: var(--bg-secondary); }
.faq-wrap { max-width: 820px; margin: 0 auto; }
.faq-item { background: var(--card-bg); border: 1px solid var(--border-light); border-radius: 14px; margin-bottom: 14px; overflow: hidden; transition: var(--transition); }
.faq-item:hover { border-color: var(--border-hover); }
.faq-item.active { border-color: var(--border-hover); background: rgba(255,255,255,0.08); }
.faq-question { width: 100%; display: flex; align-items: center; justify-content: space-between; gap: 20px; padding: 20px 24px; color: var(--text-primary); font-size: 0.98rem; font-weight: 600; text-align: left; transition: var(--transition); }
.faq-question:hover { color: var(--accent); }
.faq-icon { flex-shrink: 0; width: 26px; height: 26px; border-radius: 50%; background: rgba(0,229,255,0.1); color: var(--accent); display: flex; align-items: center; justify-content: center; font-size: 0.75rem; border: 1px solid rgba(0,229,255,0.3); transition: transform 0.3s ease; }
.faq-item.active .faq-icon { transform: rotate(45deg); background: rgba(0,229,255,0.25); }
.faq-answer { max-height: 0; overflow: hidden; transition: max-height 0.35s ease; }
.faq-answer p { padding: 0 24px 20px; color: var(--text-secondary); font-size: 0.9rem; line-height: 1.75; }

/* CTA */
.cta-section { position: relative; background: linear-gradient(135deg, #06091A 0%, var(--bg-secondary) 50%, #0A0E27 100%); overflow: hidden; padding: 90px 0; }
.cta-section::before { content: ''; position: absolute; inset: 0; background-image: linear-gradient(rgba(0,229,255,0.04) 1px, transparent 1px), linear-gradient(90deg, rgba(0,229,255,0.04) 1px, transparent 1px); background-size: 50px 50px; }
.cta-section::after { content: ''; position: absolute; width: 500px; height: 500px; left: 50%; top: 50%; transform: translate(-50%, -50%); background: radial-gradient(circle, rgba(0,229,255,0.15), transparent 60%); filter: blur(40px); }
.cta-inner { position: relative; z-index: 2; text-align: center; max-width: 660px; margin: 0 auto; }
.cta-inner h2 { font-size: clamp(1.6rem, 3vw, 2.2rem); font-weight: 700; margin-bottom: 14px; }
.cta-inner p { color: var(--text-secondary); margin-bottom: 30px; font-size: 1rem; }
.cta-inner .btn { margin: 0 8px; }

/* Footer */
.site-footer { background: #06091A; border-top: 1px solid rgba(0,229,255,0.2); padding: 60px 0 0; position: relative; }
.site-footer::before { content: ''; position: absolute; top: -1px; left: 0; right: 0; height: 1px; background: linear-gradient(90deg, transparent, var(--accent), transparent); }
.footer-grid { display: grid; grid-template-columns: 1.5fr 1fr 1fr 1.2fr; gap: 40px; margin-bottom: 40px; }
.footer-brand p { color: var(--text-secondary); font-size: 0.875rem; margin-top: 16px; line-height: 1.7; }
.footer-col h4 { font-size: 0.95rem; font-weight: 600; margin-bottom: 18px; color: var(--text-primary); }
.footer-col ul { list-style: none; display: flex; flex-direction: column; gap: 10px; }
.footer-col ul li a { color: var(--text-secondary); font-size: 0.875rem; transition: var(--transition); }
.footer-col ul li a:hover { color: var(--accent); padding-left: 4px; }
.footer-contact li { display: flex; align-items: center; gap: 10px; color: var(--text-secondary); font-size: 0.875rem; }
.footer-contact li i { color: var(--accent); width: 16px; text-align: center; }
.footer-bottom { border-top: 1px solid rgba(255,255,255,0.06); padding: 20px 0; text-align: center; color: var(--text-muted); font-size: 0.8rem; }
.footer-bottom a { color: var(--text-muted); }
.footer-bottom a:hover { color: var(--accent); }

/* Responsive */
@media (max-width: 1024px) {
  .container { padding: 0 24px; }
  .section { padding: 60px 0; }
  .latest-grid { grid-template-columns: repeat(2, 1fr); }
  .cases-wrap { grid-template-columns: 1fr; }
  .scene-row, .scene-row.reverse { grid-template-columns: 1fr; gap: 30px; }
  .scene-row.reverse .scene-image { order: 0; }
  .scene-row.reverse .scene-content { order: 0; }
  .pricing-grid { grid-template-columns: repeat(2, 1fr); gap: 24px; }
  .pricing-card.recommended { order: -1; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 768px) {
  .container { padding: 0 20px; }
  .section { padding: 50px 0; }
  .section-head h2 { font-size: 1.5rem; }
  .header-main-row { flex-wrap: wrap; }
  .brand { font-size: 1rem; }
  .nav-search { order: 3; flex: 1 0 100%; margin-top: 10px; border-radius: 10px; }
  .header-cta { display: none; }
  .mobile-toggle { display: flex; }
  .header-nav { overflow-x: auto; }
  .channel-tabs { padding: 8px 20px; gap: 8px; overflow-x: auto; -webkit-overflow-scrolling: touch; scrollbar-width: none; }
  .channel-tabs::-webkit-scrollbar { display: none; }
  .channel-tabs .tab { flex-shrink: 0; padding: 7px 14px; font-size: 0.82rem; }
  .hero { min-height: 80vh; }
  .hero-inner { padding: 40px 0; }
  .hero h1 { font-size: 2rem; }
  .hero-sub { font-size: 0.95rem; }
  .hero-actions { flex-direction: column; align-items: flex-start; }
  .hero-actions .btn { width: 100%; }
  .hero-anchors { gap: 10px; }
  .hero-anchors a { padding: 6px 12px; font-size: 0.8rem; }
  .latest-grid { grid-template-columns: 1fr; gap: 20px; }
  .features-list { grid-template-columns: 1fr; max-width: 480px; }
  .pricing-grid { grid-template-columns: 1fr; max-width: 440px; }
  .footer-grid { grid-template-columns: 1fr; gap: 30px; }
  .faq-question { font-size: 0.9rem; padding: 16px 18px; }
  .faq-answer p { padding: 0 18px 16px; }
}
@media (max-width: 520px) {
  .container { padding: 0 16px; }
  .section { padding: 40px 0; }
  .brand { font-size: 0.92rem; }
  .brand i { font-size: 1.2rem; }
  .nav-search { border-radius: 8px; height: 40px; }
  .nav-search button { width: 30px; height: 30px; }
  .hero-sub { font-size: 0.88rem; }
  .feature-item { flex-direction: column; }
  .feature-icon { width: 44px; height: 44px; }
  .case-stat { padding: 24px; }
  .case-stat .num { font-size: 2rem; }
  .footer-bottom { font-size: 0.75rem; }
}

/* roulang page: category1 */
:root {
      --bg-base: #0A0E27;
      --bg-panel: #0D1333;
      --bg-deep: #06091A;
      --glass-bg: rgba(255, 255, 255, 0.05);
      --glass-border: rgba(255, 255, 255, 0.1);
      --text-main: #E6EAF2;
      --text-secondary: #9AA7B8;
      --text-muted: #5A6478;
      --accent: #00E5FF;
      --accent-blue: #4D9FFF;
      --accent-glow: rgba(0, 229, 255, 0.35);
      --btn-glow: rgba(0, 229, 255, 0.5);
      --radius: 16px;
      --radius-sm: 10px;
      --shadow-card: 0 8px 32px rgba(0, 0, 0, 0.25);
      --shadow-hover: 0 12px 40px rgba(0, 0, 0, 0.4);
      --font-family: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
    }

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

    html {
      scroll-behavior: smooth;
    }

    body {
      background: var(--bg-base);
      color: var(--text-main);
      font-family: var(--font-family);
      line-height: 1.7;
      font-size: 1rem;
      -webkit-font-smoothing: antialiased;
    }

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

    a {
      color: var(--accent);
      text-decoration: none;
      transition: color .2s ease;
    }

    a:hover {
      color: var(--accent-blue);
    }

    a:focus-visible,
    button:focus-visible,
    input:focus-visible {
      outline: 2px solid var(--accent);
      outline-offset: 2px;
    }

    .container {
      max-width: 1200px;
      margin: 0 auto;
      padding: 0 30px;
    }

    @media (max-width: 640px) {
      .container {
        padding: 0 15px;
      }
    }

    /* ===== 双层导航 ===== */
    .site-header {
      position: sticky;
      top: 0;
      z-index: 100;
      background: rgba(10, 14, 39, 0.88);
      backdrop-filter: blur(18px);
      -webkit-backdrop-filter: blur(18px);
      border-bottom: 1px solid rgba(255, 255, 255, 0.06);
      box-shadow: 0 4px 30px rgba(0, 0, 0, 0.3);
    }

    .header-main {
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 20px;
      padding: 14px 30px;
      max-width: 1200px;
      margin: 0 auto;
    }

    .brand {
      display: flex;
      align-items: center;
      gap: 10px;
      font-size: 1.15rem;
      font-weight: 700;
      color: var(--text-main);
      white-space: nowrap;
      letter-spacing: .5px;
    }

    .brand i {
      color: var(--accent);
      font-size: 1.5rem;
      text-shadow: 0 0 14px var(--btn-glow);
    }

    .brand:hover {
      color: var(--accent);
    }

    .search-box {
      flex: 0 1 360px;
      display: flex;
      align-items: center;
      background: rgba(255, 255, 255, 0.06);
      border: 1px solid rgba(255, 255, 255, 0.12);
      border-radius: 999px;
      padding: 4px 4px 4px 16px;
      transition: border-color .25s, box-shadow .25s;
    }

    .search-box:focus-within {
      border-color: var(--accent);
      box-shadow: 0 0 0 3px rgba(0, 229, 255, 0.15);
    }

    .search-box input {
      flex: 1;
      min-width: 0;
      background: transparent;
      border: none;
      outline: none;
      color: var(--text-main);
      font-size: .9rem;
      padding: 6px 0;
    }

    .search-box input::placeholder {
      color: var(--text-muted);
    }

    .search-box button {
      background: linear-gradient(135deg, var(--accent), var(--accent-blue));
      border: none;
      border-radius: 999px;
      width: 34px;
      height: 34px;
      color: #0A0E27;
      cursor: pointer;
      font-size: .9rem;
      transition: transform .2s, box-shadow .2s;
      flex-shrink: 0;
    }

    .search-box button:hover {
      transform: scale(1.06);
      box-shadow: 0 0 16px var(--btn-glow);
    }

    .btn-primary {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      background: linear-gradient(135deg, var(--accent), var(--accent-blue));
      color: #0A0E27;
      font-weight: 700;
      font-size: .95rem;
      padding: 10px 24px;
      border-radius: 999px;
      border: none;
      cursor: pointer;
      text-decoration: none;
      transition: transform .2s, box-shadow .2s, filter .2s;
      white-space: nowrap;
    }

    .btn-primary:hover {
      color: #0A0E27;
      transform: translateY(-2px);
      box-shadow: 0 0 28px var(--btn-glow);
      filter: brightness(1.08);
    }

    .btn-outline {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      background: transparent;
      color: var(--text-main);
      font-weight: 600;
      font-size: .95rem;
      padding: 10px 24px;
      border-radius: 999px;
      border: 1px solid rgba(255, 255, 255, 0.4);
      cursor: pointer;
      text-decoration: none;
      transition: background .25s, border-color .25s, color .25s, transform .2s;
      white-space: nowrap;
    }

    .btn-outline:hover {
      background: rgba(255, 255, 255, 0.1);
      border-color: var(--accent);
      color: var(--accent);
      transform: translateY(-2px);
    }

    .channel-tabs {
      display: flex;
      gap: 10px;
      overflow-x: auto;
      padding: 10px 30px;
      max-width: 1200px;
      margin: 0 auto;
      scrollbar-width: none;
      border-top: 1px solid rgba(255, 255, 255, 0.05);
    }

    .channel-tabs::-webkit-scrollbar {
      display: none;
    }

    .channel-tabs .tab {
      flex-shrink: 0;
      display: inline-flex;
      align-items: center;
      gap: 6px;
      padding: 8px 20px;
      border-radius: 999px;
      font-size: .9rem;
      font-weight: 600;
      color: var(--text-secondary);
      background: rgba(255, 255, 255, 0.04);
      border: 1px solid rgba(255, 255, 255, 0.06);
      transition: background .25s, color .25s, border-color .25s, box-shadow .25s;
      text-decoration: none;
      white-space: nowrap;
    }

    .channel-tabs .tab:hover {
      color: var(--text-main);
      background: rgba(255, 255, 255, 0.1);
      border-color: rgba(0, 229, 255, 0.4);
    }

    .channel-tabs .tab.active {
      background: linear-gradient(135deg, rgba(0, 229, 255, 0.25), rgba(77, 159, 255, 0.2));
      color: #fff;
      border-color: rgba(0, 229, 255, 0.5);
      box-shadow: 0 0 18px rgba(0, 229, 255, 0.15);
    }

    @media (max-width: 768px) {
      .header-main {
        padding: 12px 15px;
        gap: 10px;
      }
      .brand span {
        font-size: .95rem;
      }
      .search-box {
        flex: 0 1 200px;
      }
      .nav-cta {
        padding: 8px 14px;
        font-size: .85rem;
      }
      .channel-tabs {
        padding: 8px 15px;
      }
    }

    @media (max-width: 520px) {
      .search-box {
        flex: 0 0 40px;
        width: 40px;
        padding: 4px;
        border-radius: 999px;
        justify-content: center;
      }
      .search-box input {
        display: none;
      }
      .search-box button {
        width: 32px;
        height: 32px;
      }
      .nav-cta {
        display: none;
      }
    }

    /* ===== Hero 横幅 ===== */
    .category-hero {
      position: relative;
      padding: 120px 0 100px;
      background: linear-gradient(135deg, rgba(10, 14, 39, 0.88), rgba(13, 19, 51, 0.9)), url('/assets/images/backpic/back-1.png') center/cover no-repeat;
      overflow: hidden;
    }

    .category-hero::before {
      content: '';
      position: absolute;
      inset: 0;
      background-image: linear-gradient(rgba(0, 229, 255, 0.06) 1px, transparent 1px),
        linear-gradient(90deg, rgba(0, 229, 255, 0.06) 1px, transparent 1px);
      background-size: 40px 40px;
      pointer-events: none;
    }

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

    .hero-badge {
      display: inline-block;
      padding: 6px 16px;
      border-radius: 999px;
      background: rgba(0, 229, 255, 0.12);
      border: 1px solid rgba(0, 229, 255, 0.35);
      color: var(--accent);
      font-size: .85rem;
      font-weight: 600;
      margin-bottom: 22px;
      letter-spacing: 1px;
    }

    .category-hero h1 {
      font-size: clamp(2.2rem, 4.5vw, 3.4rem);
      line-height: 1.25;
      font-weight: 700;
      color: var(--text-main);
      margin-bottom: 20px;
      letter-spacing: 1px;
    }

    .category-hero h1 .grad-text {
      background: linear-gradient(135deg, var(--accent), var(--accent-blue));
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
      background-clip: text;
    }

    .hero-sub {
      max-width: 640px;
      font-size: 1.1rem;
      color: var(--text-secondary);
      margin-bottom: 36px;
      line-height: 1.8;
    }

    .hero-actions {
      display: flex;
      flex-wrap: wrap;
      gap: 16px;
    }

    /* ===== 分类说明 ===== */
    .category-about {
      padding: 80px 0;
      background: var(--bg-panel);
      position: relative;
      overflow: hidden;
    }

    .category-about::after {
      content: '';
      position: absolute;
      top: -120px;
      right: -120px;
      width: 320px;
      height: 320px;
      background: radial-gradient(circle, rgba(0, 229, 255, 0.08), transparent 70%);
      border-radius: 50%;
      pointer-events: none;
    }

    .category-about h2 {
      font-size: 1.8rem;
      font-weight: 600;
      margin-bottom: 20px;
      position: relative;
    }

    .category-about .lead-text {
      color: var(--text-secondary);
      font-size: 1rem;
      line-height: 1.8;
      margin-bottom: 16px;
    }

    .stats-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 20px;
      padding: 10px;
    }

    .stat-card {
      background: var(--glass-bg);
      border: 1px solid var(--glass-border);
      border-radius: var(--radius);
      padding: 28px 24px;
      backdrop-filter: blur(12px);
      -webkit-backdrop-filter: blur(12px);
      box-shadow: var(--shadow-card);
      transition: transform .25s, box-shadow .25s, border-color .25s;
      text-align: center;
    }

    .stat-card:hover {
      transform: translateY(-4px);
      box-shadow: var(--shadow-hover);
      border-color: rgba(0, 229, 255, 0.4);
    }

    .stat-card .stat-num {
      font-size: 2.4rem;
      font-weight: 700;
      background: linear-gradient(135deg, var(--accent), var(--accent-blue));
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
      background-clip: text;
      font-variant-numeric: tabular-nums;
      line-height: 1.2;
    }

    .stat-card .stat-label {
      color: var(--text-secondary);
      font-size: .9rem;
      margin-top: 6px;
    }

    .stat-card.stat-wide {
      grid-column: 1 / -1;
      display: flex;
      align-items: center;
      justify-content: center;
      gap: 14px;
      padding: 22px 24px;
    }

    .stat-card.stat-wide .stat-num {
      font-size: 2.6rem;
    }

    /* ===== 精选内容卡片 ===== */
    .featured-cards {
      padding: 80px 0;
      background: var(--bg-base);
    }

    .section-heading {
      display: flex;
      align-items: flex-end;
      justify-content: space-between;
      margin-bottom: 40px;
      gap: 20px;
      flex-wrap: wrap;
    }

    .section-heading h2 {
      font-size: 1.8rem;
      font-weight: 600;
      position: relative;
    }

    .section-heading h2::after {
      content: '';
      display: block;
      width: 48px;
      height: 3px;
      background: linear-gradient(90deg, var(--accent), transparent);
      border-radius: 3px;
      margin-top: 8px;
    }

    .section-heading .section-link {
      font-size: .9rem;
      color: var(--text-secondary);
      display: inline-flex;
      align-items: center;
      gap: 6px;
      transition: color .2s;
    }

    .section-heading .section-link:hover {
      color: var(--accent);
    }

    .card {
      background: var(--glass-bg);
      border: 1px solid var(--glass-border);
      border-radius: var(--radius);
      overflow: hidden;
      backdrop-filter: blur(12px);
      -webkit-backdrop-filter: blur(12px);
      box-shadow: var(--shadow-card);
      transition: transform .3s, box-shadow .3s, border-color .3s;
      height: 100%;
      display: flex;
      flex-direction: column;
    }

    .card:hover {
      transform: translateY(-4px);
      box-shadow: var(--shadow-hover);
      border-color: rgba(0, 229, 255, 0.4);
    }

    .card .card-thumb {
      overflow: hidden;
      position: relative;
      background: var(--bg-panel);
    }

    .card .card-thumb img {
      width: 100%;
      object-fit: cover;
      transition: transform .4s ease;
    }

    .card:hover .card-thumb img {
      transform: scale(1.04);
    }

    .card .card-tag {
      position: absolute;
      top: 14px;
      left: 14px;
      background: rgba(0, 229, 255, 0.9);
      color: #0A0E27;
      font-size: .75rem;
      font-weight: 700;
      padding: 4px 12px;
      border-radius: 999px;
      z-index: 2;
      box-shadow: 0 0 14px rgba(0, 229, 255, 0.4);
    }

    .card .card-body {
      padding: 20px 22px 24px;
      flex: 1;
      display: flex;
      flex-direction: column;
    }

    .card .card-body h3 {
      font-size: 1.15rem;
      font-weight: 600;
      margin-bottom: 10px;
      line-height: 1.4;
      color: var(--text-main);
    }

    .card .card-body p {
      color: var(--text-secondary);
      font-size: .9rem;
      line-height: 1.7;
      margin-bottom: 16px;
      flex: 1;
    }

    .card .card-link {
      font-size: .88rem;
      font-weight: 600;
      display: inline-flex;
      align-items: center;
      gap: 6px;
      color: var(--accent);
      transition: gap .2s;
    }

    .card .card-link:hover {
      gap: 10px;
    }

    /* ===== 服务能力 图文交替 ===== */
    .capabilities {
      padding: 80px 0;
      background: var(--bg-panel);
      position: relative;
    }

    .capabilities::before {
      content: '';
      position: absolute;
      bottom: 0;
      left: 0;
      width: 100%;
      height: 1px;
      background: linear-gradient(90deg, transparent, rgba(0, 229, 255, 0.4), transparent);
    }

    .capabilities .cap-title {
      font-size: 1.8rem;
      font-weight: 600;
      margin-bottom: 50px;
      text-align: center;
    }

    .capability-row {
      margin-bottom: 60px;
    }

    .capability-row:last-child {
      margin-bottom: 0;
    }

    .capability-img {
      border-radius: var(--radius);
      overflow: hidden;
      box-shadow: var(--shadow-card);
      border: 1px solid var(--glass-border);
      position: relative;
    }

    .capability-img img {
      width: 100%;
      height: 100%;
      object-fit: cover;
      min-height: 260px;
      transition: transform .5s ease;
    }

    .capability-img:hover img {
      transform: scale(1.03);
    }

    .capability-text {
      padding: 20px 0;
    }

    .capability-text h3 {
      font-size: 1.4rem;
      font-weight: 600;
      margin-bottom: 16px;
      display: flex;
      align-items: center;
      gap: 12px;
    }

    .capability-text h3 i {
      color: var(--accent);
      font-size: 1.5rem;
      text-shadow: 0 0 12px var(--accent-glow);
    }

    .capability-text p {
      color: var(--text-secondary);
      font-size: 1rem;
      line-height: 1.8;
      margin-bottom: 14px;
    }

    .capability-text .cap-points {
      list-style: none;
      padding: 0;
      margin: 18px 0 0;
    }

    .capability-text .cap-points li {
      display: flex;
      align-items: center;
      gap: 10px;
      padding: 8px 0;
      color: var(--text-main);
      font-size: .95rem;
      border-bottom: 1px solid rgba(255, 255, 255, 0.04);
    }

    .capability-text .cap-points li i {
      color: var(--accent);
      width: 20px;
      text-align: center;
      flex-shrink: 0;
    }

    /* ===== 访问流程 ===== */
    .process {
      padding: 80px 0;
      background: var(--bg-base);
    }

    .process .process-title {
      font-size: 1.8rem;
      font-weight: 600;
      text-align: center;
      margin-bottom: 14px;
    }

    .process .process-sub {
      color: var(--text-secondary);
      text-align: center;
      max-width: 620px;
      margin: 0 auto 50px;
      font-size: .95rem;
      line-height: 1.8;
    }

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

    .step {
      background: var(--glass-bg);
      border: 1px solid var(--glass-border);
      border-radius: var(--radius);
      padding: 30px 24px;
      position: relative;
      backdrop-filter: blur(12px);
      -webkit-backdrop-filter: blur(12px);
      box-shadow: var(--shadow-card);
      transition: transform .25s, border-color .25s, box-shadow .25s;
      text-align: center;
    }

    .step:hover {
      transform: translateY(-4px);
      border-color: rgba(0, 229, 255, 0.4);
      box-shadow: var(--shadow-hover);
    }

    .step .step-num {
      width: 44px;
      height: 44px;
      border-radius: 50%;
      background: linear-gradient(135deg, var(--accent), var(--accent-blue));
      color: #0A0E27;
      font-weight: 700;
      font-size: 1.1rem;
      display: flex;
      align-items: center;
      justify-content: center;
      margin: 0 auto 18px;
      box-shadow: 0 0 18px rgba(0, 229, 255, 0.3);
    }

    .step .step-title {
      font-size: 1rem;
      font-weight: 600;
      margin-bottom: 8px;
      color: var(--text-main);
    }

    .step .step-desc {
      font-size: .85rem;
      color: var(--text-secondary);
      line-height: 1.6;
    }

    @media (max-width: 1024px) {
      .steps {
        grid-template-columns: repeat(2, 1fr);
      }
    }

    @media (max-width: 520px) {
      .steps {
        grid-template-columns: 1fr;
      }
    }

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

    .faq-section .faq-title {
      font-size: 1.8rem;
      font-weight: 600;
      text-align: center;
      margin-bottom: 50px;
    }

    .faq-list {
      max-width: 860px;
      margin: 0 auto;
    }

    .faq-item {
      background: var(--glass-bg);
      border: 1px solid var(--glass-border);
      border-radius: var(--radius);
      margin-bottom: 14px;
      overflow: hidden;
      transition: border-color .25s, background .25s;
    }

    .faq-item.open {
      border-color: rgba(0, 229, 255, 0.35);
      background: rgba(255, 255, 255, 0.08);
    }

    .faq-question {
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 16px;
      padding: 18px 24px;
      cursor: pointer;
      font-size: 1rem;
      font-weight: 600;
      color: var(--text-main);
      user-select: none;
      transition: color .2s;
    }

    .faq-question:hover {
      color: var(--accent);
    }

    .faq-question .faq-icon {
      width: 28px;
      height: 28px;
      border-radius: 50%;
      background: rgba(0, 229, 255, 0.12);
      border: 1px solid rgba(0, 229, 255, 0.3);
      color: var(--accent);
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: .8rem;
      flex-shrink: 0;
      transition: transform .3s, background .3s;
    }

    .faq-item.open .faq-icon {
      transform: rotate(45deg);
      background: var(--accent);
      color: #0A0E27;
    }

    .faq-answer {
      max-height: 0;
      overflow: hidden;
      transition: max-height .35s ease;
    }

    .faq-answer-inner {
      padding: 0 24px 20px;
      color: var(--text-secondary);
      font-size: .92rem;
      line-height: 1.8;
    }

    .faq-item.open .faq-answer {
      max-height: 500px;
    }

    /* ===== CTA ===== */
    .cta-section {
      padding: 90px 0;
      background: linear-gradient(135deg, rgba(13, 19, 51, 0.95), rgba(10, 14, 39, 0.98)), url('/assets/images/backpic/back-2.webp') center/cover no-repeat;
      position: relative;
      overflow: hidden;
      text-align: center;
    }

    .cta-section::before {
      content: '';
      position: absolute;
      inset: 0;
      background-image: linear-gradient(rgba(0, 229, 255, 0.05) 1px, transparent 1px),
        linear-gradient(90deg, rgba(0, 229, 255, 0.05) 1px, transparent 1px);
      background-size: 50px 50px;
      pointer-events: none;
    }

    .cta-section .container {
      position: relative;
      z-index: 2;
    }

    .cta-section h2 {
      font-size: clamp(1.8rem, 3vw, 2.6rem);
      font-weight: 700;
      color: var(--text-main);
      margin-bottom: 18px;
    }

    .cta-section p {
      color: var(--text-secondary);
      max-width: 560px;
      margin: 0 auto 32px;
      font-size: 1rem;
      line-height: 1.8;
    }

    /* ===== 页脚 ===== */
    .site-footer {
      background: var(--bg-deep);
      padding: 60px 0 0;
      border-top: 1px solid rgba(0, 229, 255, 0.15);
    }

    .footer-grid {
      display: grid;
      grid-template-columns: 1.2fr 0.8fr 1fr 0.9fr;
      gap: 40px;
      padding-bottom: 40px;
    }

    .footer-brand .brand {
      margin-bottom: 16px;
    }

    .footer-brand p {
      color: var(--text-secondary);
      font-size: .88rem;
      line-height: 1.8;
      margin-bottom: 18px;
    }

    .footer-col h4 {
      color: var(--text-main);
      font-size: 1rem;
      font-weight: 600;
      margin-bottom: 16px;
      position: relative;
      padding-bottom: 10px;
    }

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

    .footer-col ul {
      list-style: none;
      padding: 0;
      margin: 0;
    }

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

    .footer-col ul li a {
      color: var(--text-secondary);
      font-size: .88rem;
      transition: color .2s, padding-left .2s;
    }

    .footer-col ul li a:hover {
      color: var(--accent);
      padding-left: 4px;
    }

    .footer-col .footer-contact li {
      color: var(--text-secondary);
      font-size: .88rem;
      display: flex;
      align-items: center;
      gap: 8px;
    }

    .footer-col .footer-contact li i {
      color: var(--accent);
      width: 18px;
      text-align: center;
    }

    .footer-bottom {
      border-top: 1px solid rgba(255, 255, 255, 0.06);
      padding: 20px 0;
      text-align: center;
      color: var(--text-muted);
      font-size: .82rem;
    }

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

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

    @media (max-width: 1024px) {
      .footer-grid {
        grid-template-columns: 1fr 1fr;
      }
    }

    @media (max-width: 640px) {
      .footer-grid {
        grid-template-columns: 1fr;
        gap: 30px;
      }
    }

    /* ===== 响应式微调 ===== */
    @media (max-width: 1024px) {
      .category-about {
        padding: 60px 0;
      }
      .featured-cards,
      .capabilities,
      .process,
      .faq-section,
      .cta-section {
        padding: 60px 0;
      }
    }

    @media (max-width: 768px) {
      .category-hero {
        padding: 80px 0 60px;
      }
      .stats-grid {
        grid-template-columns: 1fr;
      }
      .stat-card.stat-wide {
        grid-column: auto;
        flex-direction: column;
      }
      .capability-row {
        margin-bottom: 40px;
      }
      .capability-text {
        padding: 20px 0 0;
      }
    }

    @media (max-width: 520px) {
      .hero-actions {
        flex-direction: column;
        align-items: stretch;
      }
      .hero-actions .btn-primary,
      .hero-actions .btn-outline {
        justify-content: center;
      }
      .category-about h2,
      .section-heading h2,
      .capabilities .cap-title,
      .process .process-title,
      .faq-section .faq-title {
        font-size: 1.4rem;
      }
      .card .card-body {
        padding: 16px 18px 20px;
      }
      .faq-question {
        padding: 15px 16px;
        font-size: .92rem;
      }
      .faq-answer-inner {
        padding: 0 16px 16px;
        font-size: .88rem;
      }
    }

/* roulang page: article */
:root {
  --color-bg: #0A0E27;
  --color-bg-deep: #06091A;
  --color-bg-panel: #0D1333;
  --color-glass: rgba(255,255,255,0.05);
  --color-border: rgba(255,255,255,0.1);
  --color-cyan: #00E5FF;
  --color-blue: #4D9FFF;
  --color-text: #E6EAF2;
  --color-text-secondary: #9AA7B8;
  --color-text-dim: #5A6478;
  --radius-lg: 16px;
  --radius-md: 12px;
  --radius-sm: 8px;
  --shadow-card: 0 8px 32px rgba(0,0,0,0.25);
  --shadow-hover: 0 12px 40px rgba(0,0,0,0.4);
  --glow-cyan: rgba(0,229,255,0.35);
  --transition: all 0.3s ease;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
  background: var(--color-bg);
  color: var(--color-text);
  line-height: 1.7;
  margin: 0;
  -webkit-font-smoothing: antialiased;
}

h1, h2, h3, h4, h5, h6 {
  color: #fff;
  font-weight: 600;
  margin-top: 0;
  line-height: 1.4;
}

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

a:hover {
  color: #fff;
}

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

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 15px;
}

.row {
  max-width: none;
}

.container .row {
  max-width: none;
  margin-left: -15px;
  margin-right: -15px;
}

.columns {
  padding-left: 15px;
  padding-right: 15px;
}

.text-center {
  text-align: center;
}

.page-section {
  padding: 70px 0;
}

/* 按钮 */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 28px;
  border-radius: 12px;
  font-size: 0.95rem;
  font-weight: 600;
  border: 1px solid transparent;
  cursor: pointer;
  transition: var(--transition);
  line-height: 1.2;
  white-space: nowrap;
}

.btn-primary {
  background: linear-gradient(135deg, var(--color-cyan), var(--color-blue));
  color: #00132B;
  box-shadow: 0 0 22px rgba(0,229,255,0.3), 0 6px 18px rgba(0,0,0,0.2);
}

.btn-primary:hover {
  color: #00132B;
  transform: translateY(-2px);
  box-shadow: 0 0 30px rgba(0,229,255,0.5), 0 8px 22px rgba(0,0,0,0.25);
}

.btn-outline {
  background: transparent;
  border-color: rgba(255,255,255,0.45);
  color: #fff;
}

.btn-outline:hover {
  background: rgba(255,255,255,0.1);
  border-color: var(--color-cyan);
  color: var(--color-cyan);
  transform: translateY(-2px);
}

.btn-sm {
  padding: 8px 18px;
  font-size: 0.85rem;
  border-radius: 10px;
}

/* 顶部导航 */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(10, 14, 39, 0.92);
  backdrop-filter: blur(18px);
  -webkit-backdrop-filter: blur(18px);
  border-bottom: 1px solid rgba(255,255,255,0.08);
  box-shadow: 0 8px 24px rgba(0,0,0,0.3);
}

.top-bar {
  border-bottom: 1px solid rgba(255,255,255,0.04);
}

.nav-container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding-top: 10px;
  padding-bottom: 10px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 1.12rem;
  font-weight: 700;
  color: #fff;
  white-space: nowrap;
  flex-shrink: 0;
}

.brand i {
  width: 36px;
  height: 36px;
  border-radius: 10px;
  background: linear-gradient(135deg, var(--color-cyan), var(--color-blue));
  display: flex;
  align-items: center;
  justify-content: center;
  color: #0A0E27;
  font-size: 1rem;
  box-shadow: 0 0 18px rgba(0,229,255,0.35);
  flex-shrink: 0;
}

.search-box {
  flex: 1;
  max-width: 420px;
  display: flex;
  background: rgba(255,255,255,0.06);
  border: 1px solid rgba(255,255,255,0.14);
  border-radius: 24px;
  overflow: hidden;
  transition: var(--transition);
}

.search-box:focus-within {
  border-color: var(--color-cyan);
  box-shadow: 0 0 0 3px rgba(0,229,255,0.12);
}

.search-box input {
  flex: 1;
  background: transparent;
  border: none;
  outline: none;
  padding: 8px 16px;
  color: #fff;
  font-size: 0.9rem;
  min-width: 0;
}

.search-box input::placeholder {
  color: rgba(255,255,255,0.45);
}

.search-box button {
  background: transparent;
  border: none;
  padding: 0 14px;
  color: var(--color-cyan);
  cursor: pointer;
  font-size: 0.9rem;
}

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

.channel-tabs {
  position: relative;
  z-index: 99;
  background: rgba(13,19,51,0.92);
  border-bottom: 1px solid rgba(255,255,255,0.06);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
}

.channel-scroll {
  max-width: 1200px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  gap: 8px;
  overflow-x: auto;
  padding: 8px 15px;
  scrollbar-width: none;
  -ms-overflow-style: none;
}

.channel-scroll::-webkit-scrollbar {
  display: none;
}

.tab {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 7px 18px;
  border-radius: 22px;
  font-size: 0.875rem;
  color: var(--color-text-secondary);
  border: 1px solid transparent;
  white-space: nowrap;
  transition: var(--transition);
}

.tab i {
  font-size: 0.8rem;
}

.tab:hover {
  color: #fff;
  background: rgba(255,255,255,0.07);
  border-color: rgba(255,255,255,0.12);
}

.tab.active {
  color: #001925;
  background: linear-gradient(135deg, var(--color-cyan), var(--color-blue));
  font-weight: 600;
  box-shadow: 0 0 16px rgba(0,229,255,0.28);
}

/* 文章 Hero */
.article-hero {
  position: relative;
  padding: 80px 0 110px;
  background: url('/assets/images/backpic/back-2.webp') center/cover no-repeat;
  overflow: hidden;
}

.article-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(10,14,39,0.82) 0%, rgba(10,14,39,0.72) 50%, rgba(10,14,39,0.96) 100%);
}

.article-hero::after {
  content: "";
  position: absolute;
  inset: 0;
  background-image: linear-gradient(rgba(255,255,255,0.04) 1px, transparent 1px), linear-gradient(90deg, rgba(255,255,255,0.04) 1px, transparent 1px);
  background-size: 40px 40px;
  pointer-events: none;
}

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

.breadcrumb {
  font-size: 0.85rem;
  color: rgba(255,255,255,0.6);
  margin-bottom: 26px;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
}

.breadcrumb a {
  color: rgba(255,255,255,0.78);
}

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

.breadcrumb .divider {
  color: rgba(255,255,255,0.3);
}

.breadcrumb .current {
  color: rgba(255,255,255,0.55);
  max-width: 320px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.article-tag {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  background: rgba(0,229,255,0.12);
  color: var(--color-cyan);
  border: 1px solid rgba(0,229,255,0.35);
  padding: 5px 14px;
  border-radius: 20px;
  font-size: 0.8rem;
  margin-bottom: 18px;
  font-weight: 500;
}

.article-head h1 {
  font-size: clamp(1.9rem, 4vw, 2.8rem);
  line-height: 1.3;
  margin-bottom: 18px;
}

.article-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 12px 22px;
  color: var(--color-text-secondary);
  font-size: 0.875rem;
}

.article-meta span {
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

.article-meta i {
  color: var(--color-cyan);
}

/* 正文阅读区 */
.article-section {
  background: #0B1029;
  padding: 0 0 70px;
}

.article-wrap {
  max-width: 860px;
  margin: -60px auto 0;
  position: relative;
  z-index: 3;
  background: rgba(255,255,255,0.04);
  border: 1px solid rgba(255,255,255,0.1);
  border-radius: 20px;
  padding: 36px 42px;
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  box-shadow: 0 16px 50px rgba(0,0,0,0.3);
}

.article-content {
  max-width: 760px;
  margin: 0 auto;
  font-size: 1rem;
  line-height: 1.8;
  color: var(--color-text);
}

.article-content p {
  margin-bottom: 1.6em;
}

.article-content h2 {
  font-size: 1.5rem;
  margin-top: 2.2em;
  margin-bottom: 0.7em;
  padding-bottom: 8px;
  border-bottom: 1px solid rgba(255,255,255,0.08);
}

.article-content h3 {
  font-size: 1.2rem;
  margin-top: 1.8em;
  margin-bottom: 0.6em;
}

.article-content ul,
.article-content ol {
  margin: 0 0 1.6em 1.4em;
}

.article-content li {
  margin-bottom: 0.45em;
}

.article-content img {
  border-radius: 12px;
  border: 1px solid rgba(255,255,255,0.08);
  margin: 1.6em 0;
  box-shadow: var(--shadow-card);
}

.article-content blockquote {
  border-left: 3px solid var(--color-cyan);
  background: rgba(0,229,255,0.06);
  padding: 14px 20px;
  border-radius: 0 12px 12px 0;
  margin: 1.5em 0;
  color: var(--color-text-secondary);
}

.article-content code {
  background: rgba(255,255,255,0.08);
  padding: 2px 6px;
  border-radius: 6px;
  font-size: 0.9em;
}

.article-content pre {
  background: #0D1333;
  border: 1px solid rgba(255,255,255,0.08);
  border-radius: 12px;
  padding: 16px 20px;
  overflow-x: auto;
  margin: 1.5em 0;
}

.article-content pre code {
  background: transparent;
  padding: 0;
}

.article-content a {
  color: var(--color-cyan);
  text-decoration: underline;
  text-underline-offset: 3px;
}

.article-tags {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  margin-top: 38px;
  padding-top: 22px;
  border-top: 1px solid rgba(255,255,255,0.08);
}

.tag-label {
  color: var(--color-text-secondary);
  margin-right: 6px;
  font-size: 0.875rem;
}

.tag {
  display: inline-flex;
  padding: 4px 13px;
  border-radius: 18px;
  background: rgba(255,255,255,0.06);
  border: 1px solid rgba(255,255,255,0.1);
  color: var(--color-text-secondary);
  font-size: 0.8rem;
  transition: var(--transition);
}

.tag:hover {
  color: var(--color-cyan);
  border-color: rgba(0,229,255,0.4);
}

.share-box {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-top: 16px;
  color: var(--color-text-secondary);
  font-size: 0.875rem;
}

.share-box a {
  width: 32px;
  height: 32px;
  border-radius: 8px;
  background: rgba(255,255,255,0.06);
  border: 1px solid rgba(255,255,255,0.1);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-text-secondary);
  transition: var(--transition);
}

.share-box a:hover {
  color: #0A0E27;
  background: var(--color-cyan);
  border-color: var(--color-cyan);
  transform: translateY(-2px);
}

.article-back {
  text-align: center;
  margin-top: 30px;
}

/* 空态 */
.empty-page {
  padding: 80px 0;
  background: #0B1029;
}

.empty-state {
  max-width: 600px;
  margin: 0 auto;
  text-align: center;
  padding: 60px 30px;
  background: rgba(255,255,255,0.05);
  border: 1px solid rgba(255,255,255,0.08);
  border-radius: 20px;
  box-shadow: var(--shadow-card);
}

.empty-state i {
  font-size: 3rem;
  color: var(--color-cyan);
  margin-bottom: 18px;
  display: block;
}

.empty-state h1 {
  font-size: 2rem;
  margin-bottom: 12px;
}

.empty-state p {
  color: var(--color-text-secondary);
  margin-bottom: 24px;
}

/* 相关推荐 */
.related-section {
  background: var(--color-bg-panel);
  padding: 70px 0;
  border-top: 1px solid rgba(255,255,255,0.05);
}

.section-head {
  text-align: center;
  margin-bottom: 40px;
}

.section-head h2 {
  font-size: 1.8rem;
  margin-bottom: 8px;
}

.section-head p {
  color: var(--color-text-secondary);
  font-size: 0.95rem;
}

.related-grid {
  display: flex;
  flex-wrap: wrap;
}

.related-grid::before,
.related-grid::after {
  display: none;
}

.related-grid .columns {
  float: none;
  display: flex;
  margin-bottom: 24px;
}

.related-card-inner {
  width: 100%;
  display: flex;
  flex-direction: column;
  background: rgba(255,255,255,0.05);
  border: 1px solid rgba(255,255,255,0.1);
  border-radius: 16px;
  overflow: hidden;
  box-shadow: 0 8px 32px rgba(0,0,0,0.25);
  transition: var(--transition);
}

.related-card-inner:hover {
  transform: translateY(-5px);
  border-color: rgba(0,229,255,0.6);
  box-shadow: 0 12px 40px rgba(0,0,0,0.4), 0 0 22px rgba(0,229,255,0.12);
}

.related-card-media {
  height: 170px;
  overflow: hidden;
  position: relative;
}

.related-card-media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
  transition: transform 0.4s ease;
}

.related-card-inner:hover .related-card-media img {
  transform: scale(1.04);
}

.related-card-body {
  padding: 18px 20px 22px;
  display: flex;
  flex-direction: column;
  flex: 1;
}

.related-card-body .tag {
  align-self: flex-start;
  margin-bottom: 10px;
}

.related-card-body h3 {
  font-size: 1.08rem;
  margin-bottom: 8px;
  line-height: 1.4;
}

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

.related-card-body h3 a:hover {
  color: var(--color-cyan);
}

.related-card-body p {
  font-size: 0.875rem;
  color: var(--color-text-secondary);
  margin-bottom: 14px;
  flex: 1;
}

.related-more {
  font-size: 0.85rem;
  color: var(--color-cyan);
  font-weight: 600;
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

.related-more:hover {
  color: #fff;
}

/* CTA */
.cta-section {
  position: relative;
  padding: 70px 0;
  background: linear-gradient(135deg, #0A0E27 0%, #0D1A44 60%, #0A0E27 100%);
  border-top: 1px solid rgba(0,229,255,0.15);
  overflow: hidden;
}

.cta-section::before {
  content: "";
  position: absolute;
  inset: 0;
  background: url('/assets/images/backpic/back-1.png') center/cover no-repeat;
  opacity: 0.25;
}

.cta-section::after {
  content: "";
  position: absolute;
  inset: 0;
  background-image: linear-gradient(rgba(255,255,255,0.04) 1px, transparent 1px), linear-gradient(90deg, rgba(255,255,255,0.04) 1px, transparent 1px);
  background-size: 40px 40px;
  pointer-events: none;
}

.cta-inner {
  position: relative;
  z-index: 2;
  text-align: center;
}

.cta-inner h2 {
  font-size: clamp(1.5rem, 3vw, 2.2rem);
  margin-bottom: 12px;
}

.cta-inner p {
  color: var(--color-text-secondary);
  margin-bottom: 26px;
  font-size: 1rem;
}

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

/* FAQ 组件（预留） */
.faq-section {
  background: #0B1029;
  padding: 70px 0;
}

.faq-item {
  background: rgba(255,255,255,0.05);
  border: 1px solid rgba(255,255,255,0.1);
  border-radius: 16px;
  padding: 0;
  margin-bottom: 14px;
  overflow: hidden;
  transition: var(--transition);
}

.faq-item:hover {
  border-color: rgba(0,229,255,0.4);
}

.faq-question {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 12px;
  padding: 16px 20px;
  font-size: 1rem;
  font-weight: 600;
  color: #fff;
  cursor: pointer;
  user-select: none;
}

.faq-question i {
  color: var(--color-cyan);
  transition: transform 0.3s ease;
}

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

.faq-answer {
  padding: 0 20px;
  max-height: 0;
  overflow: hidden;
  color: var(--color-text-secondary);
  font-size: 0.9rem;
  transition: max-height 0.35s ease, padding 0.35s ease;
}

.faq-item.active .faq-answer {
  max-height: 500px;
  padding-bottom: 18px;
}

/* 页脚 */
.site-footer {
  background: var(--color-bg-deep);
  border-top: 1px solid rgba(0,229,255,0.2);
  padding: 60px 0 0;
  position: relative;
}

.site-footer::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(0,229,255,0.6), transparent);
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.4fr 0.8fr 1fr 1fr;
  gap: 40px;
  padding-bottom: 40px;
}

.footer-brand .brand {
  font-size: 1.1rem;
  margin-bottom: 14px;
}

.footer-brand p {
  color: var(--color-text-secondary);
  font-size: 0.875rem;
  line-height: 1.8;
  margin: 14px 0 0;
}

.footer-col h4 {
  font-size: 0.95rem;
  color: #fff;
  margin-bottom: 16px;
}

.footer-col ul {
  list-style: none;
  margin: 0;
  padding: 0;
}

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

.footer-col ul a {
  color: var(--color-text-secondary);
  font-size: 0.875rem;
}

.footer-col ul a:hover {
  color: var(--color-cyan);
}

.footer-contact li {
  color: var(--color-text-secondary);
  font-size: 0.875rem;
  display: flex;
  align-items: center;
  gap: 8px;
}

.footer-contact li i {
  color: var(--color-cyan);
  width: 16px;
  text-align: center;
}

.footer-bottom {
  border-top: 1px solid rgba(255,255,255,0.06);
  padding: 16px 0;
  text-align: center;
  color: rgba(255,255,255,0.4);
  font-size: 0.8rem;
}

.footer-bottom a {
  color: rgba(255,255,255,0.5);
}

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

/* 响应式 */
@media (max-width: 1024px) {
  .search-box {
    max-width: 260px;
  }

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

@media (max-width: 768px) {
  .search-box {
    display: none;
  }

  .nav-container {
    gap: 12px;
  }

  .brand {
    font-size: 0.98rem;
  }

  .brand i {
    width: 32px;
    height: 32px;
    font-size: 0.9rem;
  }

  .btn-sm {
    padding: 7px 14px;
    font-size: 0.82rem;
  }

  .article-hero {
    padding: 50px 0 90px;
  }

  .article-head h1 {
    font-size: 1.7rem;
  }

  .article-wrap {
    margin-top: -45px;
    padding: 24px 18px;
  }

  .article-content {
    font-size: 0.95rem;
  }

  .related-section,
  .cta-section,
  .faq-section {
    padding: 50px 0;
  }

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

  .cta-btns .btn {
    width: 100%;
    max-width: 320px;
  }
}

@media (max-width: 640px) {
  .footer-grid {
    grid-template-columns: 1fr;
    gap: 28px;
  }

  .related-grid .columns {
    width: 100%;
  }
}

@media (max-width: 520px) {
  .nav-container {
    gap: 8px;
  }

  .brand span {
    font-size: 0.85rem;
  }

  .brand i {
    width: 28px;
    height: 28px;
    font-size: 0.8rem;
  }

  .channel-scroll {
    padding: 6px 10px;
  }

  .tab {
    padding: 6px 13px;
    font-size: 0.8rem;
  }

  .breadcrumb .current {
    max-width: 200px;
  }

  .article-tags,
  .share-box {
    flex-direction: column;
    align-items: flex-start;
  }
}

/* roulang page: category2 */
:root {
      --color-bg: #0A0E27;
      --color-bg-contrast: #0D1333;
      --color-bg-deep: #06091A;
      --color-glass: rgba(255, 255, 255, 0.05);
      --color-text: #E6EAF2;
      --color-text-secondary: #9AA7B8;
      --color-text-muted: #5A6478;
      --color-accent: #00E5FF;
      --color-blue: #4D9FFF;
      --glow-soft: rgba(0, 229, 255, 0.35);
      --glow-strong: rgba(0, 229, 255, 0.5);
      --border-glass: rgba(255, 255, 255, 0.1);
      --radius-lg: 16px;
      --radius-md: 12px;
      --shadow-card: 0 8px 32px rgba(0, 0, 0, 0.25);
      --shadow-hover: 0 12px 40px rgba(0, 0, 0, 0.4);
      --transition-base: 0.3s ease;
    }

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

    html {
      scroll-behavior: smooth;
    }

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

    a {
      color: inherit;
    }

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

    .container {
      max-width: 1200px;
      margin: 0 auto;
      padding: 0 30px;
    }

    .section {
      padding: 80px 0;
    }

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

    .section-head {
      text-align: center;
      margin-bottom: 50px;
    }

    .section-head .tagline {
      color: var(--color-accent);
      font-size: .95rem;
      letter-spacing: 2px;
      margin-bottom: 8px;
      display: block;
      font-weight: 600;
    }

    .section-head h2 {
      font-size: 1.8rem;
      font-weight: 600;
      line-height: 1.3;
    }

    .section-head p {
      color: var(--color-text-secondary);
      max-width: 640px;
      margin: 12px auto 0;
      font-size: .95rem;
    }

    /* 双层导航 */
    .site-header {
      position: sticky;
      top: 0;
      z-index: 100;
      background: rgba(10, 14, 39, 0.88);
      backdrop-filter: blur(18px);
      -webkit-backdrop-filter: blur(18px);
      border-bottom: 1px solid rgba(255, 255, 255, 0.06);
      box-shadow: 0 4px 24px rgba(0, 0, 0, 0.3);
    }

    .header-top {
      padding: 14px 0;
    }

    .header-row {
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 20px;
    }

    .brand {
      display: flex;
      align-items: center;
      gap: 10px;
      color: #fff;
      font-size: 1.1rem;
      font-weight: 700;
      text-decoration: none;
      white-space: nowrap;
      transition: color .3s;
    }

    .brand:hover {
      color: var(--color-accent);
    }

    .brand i {
      color: var(--color-accent);
      font-size: 1.4rem;
      text-shadow: 0 0 12px var(--glow-soft);
    }

    .header-search {
      flex: 1;
      max-width: 420px;
      display: flex;
      align-items: center;
      background: rgba(255, 255, 255, 0.06);
      border: 1px solid rgba(255, 255, 255, 0.12);
      border-radius: 40px;
      padding: 0 6px 0 18px;
      transition: border-color .3s, box-shadow .3s;
    }

    .header-search:focus-within {
      border-color: var(--color-accent);
      box-shadow: 0 0 0 3px rgba(0, 229, 255, 0.15);
    }

    .header-search input {
      flex: 1;
      background: transparent;
      border: none;
      outline: none;
      color: var(--color-text);
      padding: 10px 0;
      font-size: .95rem;
    }

    .header-search input::placeholder {
      color: var(--color-text-muted);
    }

    .header-search button {
      width: 38px;
      height: 38px;
      border-radius: 50%;
      border: none;
      background: linear-gradient(135deg, #00E5FF, #4D9FFF);
      color: #0A0E27;
      cursor: pointer;
      flex-shrink: 0;
      transition: box-shadow .3s;
    }

    .header-search button:hover {
      box-shadow: 0 0 16px var(--glow-soft);
    }

    .channel-tabs {
      border-top: 1px solid rgba(255, 255, 255, 0.06);
    }

    .channel-tabs .container {
      display: flex;
      gap: 8px;
      overflow-x: auto;
      padding: 10px 30px;
      white-space: nowrap;
      scrollbar-width: none;
    }

    .channel-tabs .container::-webkit-scrollbar {
      display: none;
    }

    .tab {
      display: inline-flex;
      align-items: center;
      gap: 6px;
      padding: 8px 18px;
      border-radius: 40px;
      color: var(--color-text-secondary);
      text-decoration: none;
      font-size: .9rem;
      transition: all .3s;
      border: 1px solid transparent;
      flex-shrink: 0;
    }

    .tab:hover {
      color: #fff;
      background: rgba(255, 255, 255, 0.08);
    }

    .tab.active {
      background: linear-gradient(135deg, rgba(0, 229, 255, 0.25), rgba(77, 159, 255, 0.25));
      border-color: rgba(0, 229, 255, 0.4);
      color: #fff;
    }

    /* 按钮 */
    .btn {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      gap: 8px;
      padding: 12px 28px;
      border-radius: 40px;
      font-size: 1rem;
      font-weight: 600;
      text-decoration: none;
      transition: all .3s;
      border: 1px solid transparent;
      cursor: pointer;
      line-height: 1.5;
    }

    .btn-primary {
      background: linear-gradient(135deg, #00E5FF, #4D9FFF);
      color: #071024;
      box-shadow: 0 0 24px rgba(0, 229, 255, 0.35);
    }

    .btn-primary:hover {
      transform: translateY(-2px);
      box-shadow: 0 0 36px rgba(0, 229, 255, 0.55);
    }

    .btn-outline {
      background: transparent;
      border-color: rgba(255, 255, 255, 0.4);
      color: #fff;
    }

    .btn-outline:hover {
      background: rgba(255, 255, 255, 0.1);
      border-color: #fff;
    }

    .btn-lg {
      padding: 16px 40px;
      font-size: 1.1rem;
    }

    .btn-sm {
      padding: 8px 20px;
      font-size: .9rem;
    }

    /* Hero */
    .page-hero {
      position: relative;
      min-height: 70vh;
      display: flex;
      align-items: center;
      background-size: cover;
      background-position: center;
      padding: 90px 0;
    }

    .page-hero::before {
      content: "";
      position: absolute;
      inset: 0;
      background:
        linear-gradient(135deg, rgba(10, 14, 39, 0.94), rgba(10, 14, 39, 0.80)),
        linear-gradient(rgba(255, 255, 255, 0.02) 1px, transparent 1px),
        linear-gradient(90deg, rgba(255, 255, 255, 0.02) 1px, transparent 1px);
      background-size: auto, 40px 40px, 40px 40px;
    }

    .page-hero::after {
      content: "";
      position: absolute;
      right: -80px;
      top: 20%;
      width: 300px;
      height: 300px;
      border-radius: 50%;
      background: radial-gradient(circle, rgba(0, 229, 255, 0.18), transparent 70%);
      pointer-events: none;
    }

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

    .hero-badge {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      padding: 8px 18px;
      border-radius: 40px;
      background: rgba(0, 229, 255, 0.12);
      border: 1px solid rgba(0, 229, 255, 0.35);
      color: var(--color-accent);
      font-size: .85rem;
      margin-bottom: 22px;
      letter-spacing: 1px;
    }

    .hero-inner h1 {
      font-size: clamp(2.2rem, 4.5vw, 3.4rem);
      line-height: 1.2;
      font-weight: 700;
      max-width: 900px;
      margin-bottom: 18px;
    }

    .hero-inner h1 span {
      color: var(--color-accent);
      text-shadow: 0 0 30px var(--glow-soft);
    }

    .hero-sub {
      color: var(--color-text-secondary);
      font-size: 1.1rem;
      max-width: 680px;
      margin-bottom: 32px;
    }

    .hero-actions {
      display: flex;
      gap: 16px;
      flex-wrap: wrap;
    }

    /* 分类介绍 */
    .intro-grid {
      display: grid;
      grid-template-columns: 1.4fr 1fr;
      gap: 50px;
      align-items: center;
    }

    .intro-text h2 {
      font-size: 1.8rem;
      margin-bottom: 18px;
      line-height: 1.3;
    }

    .intro-text p {
      color: var(--color-text-secondary);
      margin-bottom: 14px;
      font-size: .95rem;
    }

    .intro-card {
      padding: 36px;
    }

    .intro-card i {
      font-size: 2.4rem;
      color: var(--color-accent);
      margin-bottom: 16px;
    }

    .intro-card h3 {
      font-size: 1.2rem;
      margin-bottom: 12px;
    }

    .intro-card p {
      color: var(--color-text-secondary);
      font-size: .95rem;
      margin-bottom: 16px;
    }

    .text-link {
      color: var(--color-accent);
      text-decoration: none;
      font-weight: 600;
      display: inline-flex;
      align-items: center;
      gap: 6px;
      transition: gap .3s, text-shadow .3s;
    }

    .text-link:hover {
      gap: 10px;
      text-shadow: 0 0 12px var(--glow-soft);
    }

    /* 玻璃卡片 */
    .glass-card {
      background: var(--color-glass);
      border: 1px solid var(--border-glass);
      border-radius: var(--radius-lg);
      backdrop-filter: blur(12px);
      -webkit-backdrop-filter: blur(12px);
      box-shadow: var(--shadow-card);
      transition: all var(--transition-base);
    }

    .glass-card:hover {
      transform: translateY(-4px);
      box-shadow: var(--shadow-hover);
      border-color: rgba(0, 229, 255, 0.35);
    }

    .feature-card {
      padding: 30px;
      height: 100%;
    }

    .feature-card .icon-wrap {
      width: 56px;
      height: 56px;
      border-radius: 14px;
      display: flex;
      align-items: center;
      justify-content: center;
      background: linear-gradient(135deg, rgba(0, 229, 255, 0.15), rgba(77, 159, 255, 0.15));
      font-size: 1.5rem;
      color: var(--color-accent);
      margin-bottom: 20px;
    }

    .feature-card h3 {
      font-size: 1.2rem;
      margin-bottom: 12px;
    }

    .feature-card p {
      color: var(--color-text-secondary);
      font-size: .93rem;
    }

    /* 场景 */
    .scene-row {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 60px;
      align-items: center;
      margin-bottom: 70px;
    }

    .scene-row:last-child {
      margin-bottom: 0;
    }

    .scene-row:nth-child(even) .scene-media {
      order: 2;
    }

    .scene-media img {
      width: 100%;
      border-radius: var(--radius-lg);
      border: 1px solid var(--border-glass);
      box-shadow: var(--shadow-card);
    }

    .scene-content h3 {
      font-size: 1.5rem;
      margin-bottom: 14px;
    }

    .scene-content p {
      color: var(--color-text-secondary);
      margin-bottom: 20px;
      font-size: .95rem;
    }

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

    .step-card {
      text-align: center;
      padding: 36px 24px;
    }

    .step-num {
      width: 48px;
      height: 48px;
      margin: 0 auto 16px;
      display: flex;
      align-items: center;
      justify-content: center;
      border-radius: 50%;
      background: linear-gradient(135deg, #00E5FF, #4D9FFF);
      color: #071024;
      font-weight: 700;
      font-size: 1.2rem;
      box-shadow: 0 0 20px var(--glow-soft);
    }

    .step-card h3 {
      font-size: 1.1rem;
      margin-bottom: 10px;
    }

    .step-card p {
      color: var(--color-text-secondary);
      font-size: .9rem;
    }

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

    .stat-card {
      text-align: center;
      padding: 40px 20px;
    }

    .stat-num {
      font-size: 2.6rem;
      font-weight: 700;
      color: var(--color-accent);
      line-height: 1.2;
      font-variant-numeric: tabular-nums;
    }

    .stat-label {
      color: var(--color-text-secondary);
      margin-top: 10px;
      font-size: .95rem;
    }

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

    .faq-item {
      margin-bottom: 14px;
      border-radius: var(--radius-md);
      background: rgba(255, 255, 255, 0.04);
      border: 1px solid rgba(255, 255, 255, 0.08);
      transition: all .3s;
      overflow: hidden;
    }

    .faq-item.open {
      border-color: rgba(0, 229, 255, 0.3);
      background: rgba(255, 255, 255, 0.08);
    }

    .faq-question {
      display: flex;
      justify-content: space-between;
      align-items: center;
      width: 100%;
      padding: 20px 24px;
      background: none;
      border: none;
      color: var(--color-text);
      cursor: pointer;
      font-size: 1rem;
      font-weight: 600;
      text-align: left;
      transition: color .3s;
    }

    .faq-question:hover {
      color: var(--color-accent);
    }

    .faq-icon {
      flex-shrink: 0;
      width: 24px;
      height: 24px;
      display: flex;
      align-items: center;
      justify-content: center;
      transition: transform .3s;
      color: var(--color-text-muted);
    }

    .faq-item.open .faq-icon {
      transform: rotate(45deg);
      color: var(--color-accent);
    }

    .faq-answer {
      max-height: 0;
      overflow: hidden;
      transition: max-height .4s ease, padding .3s;
    }

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

    .faq-answer p {
      color: var(--color-text-secondary);
      font-size: .95rem;
      margin: 0;
    }

    /* CTA */
    .cta-section {
      position: relative;
      padding: 100px 0;
      text-align: center;
      background: linear-gradient(160deg, #0D1333, #0A0E27 60%, #071024);
      overflow: hidden;
    }

    .cta-section::before {
      content: "";
      position: absolute;
      inset: 0;
      background-image:
        linear-gradient(rgba(255, 255, 255, 0.02) 1px, transparent 1px),
        linear-gradient(90deg, rgba(255, 255, 255, 0.02) 1px, transparent 1px);
      background-size: 40px 40px;
    }

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

    .cta-section h2 {
      font-size: 2rem;
      margin-bottom: 14px;
    }

    .cta-section p {
      color: var(--color-text-secondary);
      margin-bottom: 30px;
      font-size: 1.05rem;
    }

    .related-links {
      margin-top: 36px;
    }

    .cat-pill {
      display: inline-block;
      padding: 12px 30px;
      margin: 8px;
      border-radius: 40px;
      background: rgba(255, 255, 255, 0.05);
      border: 1px solid rgba(255, 255, 255, 0.15);
      color: var(--color-text);
      text-decoration: none;
      transition: all .3s;
      font-size: .9rem;
    }

    .cat-pill:hover {
      border-color: var(--color-accent);
      color: var(--color-accent);
      box-shadow: 0 0 20px rgba(0, 229, 255, 0.15);
    }

    /* 页脚 */
    .site-footer {
      background: var(--color-bg-deep);
      border-top: 1px solid rgba(0, 229, 255, 0.2);
      padding-top: 60px;
    }

    .footer-grid {
      display: grid;
      grid-template-columns: 1.6fr 1fr 1fr 1.2fr;
      gap: 40px;
      padding-bottom: 40px;
    }

    .footer-brand .brand {
      color: #fff;
      font-size: 1.1rem;
      text-decoration: none;
      display: inline-flex;
      align-items: center;
      gap: 8px;
    }

    .footer-brand p {
      color: var(--color-text-secondary);
      font-size: .9rem;
      margin-top: 14px;
      max-width: 340px;
    }

    .footer-col h4 {
      color: #fff;
      font-size: 1rem;
      margin-bottom: 16px;
      position: relative;
      padding-bottom: 8px;
    }

    .footer-col h4::after {
      content: "";
      position: absolute;
      left: 0;
      bottom: 0;
      width: 28px;
      height: 2px;
      background: linear-gradient(90deg, #00E5FF, #4D9FFF);
      border-radius: 2px;
    }

    .footer-col ul {
      list-style: none;
      padding: 0;
    }

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

    .footer-col a {
      color: var(--color-text-secondary);
      text-decoration: none;
      font-size: .9rem;
      transition: color .3s;
    }

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

    .footer-contact li {
      color: var(--color-text-secondary);
      font-size: .9rem;
    }

    .footer-contact i {
      width: 20px;
      color: var(--color-accent);
    }

    .footer-bottom {
      border-top: 1px solid rgba(255, 255, 255, 0.06);
      padding: 18px 0;
      display: flex;
      justify-content: space-between;
      color: var(--color-text-muted);
      font-size: .85rem;
      flex-wrap: wrap;
      gap: 8px;
    }

    .footer-bottom a {
      color: var(--color-text-muted);
      text-decoration: none;
    }

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

    /* 响应式 */
    @media (max-width: 1024px) {
      .process-steps,
      .stats-grid {
        grid-template-columns: repeat(2, 1fr);
      }

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

      .scene-row {
        gap: 40px;
      }
    }

    @media (max-width: 768px) {
      .section {
        padding: 50px 0;
      }

      .header-search {
        display: none;
      }

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

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

      .scene-row:nth-child(even) .scene-media {
        order: 0;
      }

      .page-hero {
        min-height: auto;
        padding: 70px 0;
      }

      .footer-bottom {
        flex-direction: column;
        justify-content: center;
        text-align: center;
      }
    }

    @media (max-width: 640px) {
      .container {
        padding: 0 15px;
      }

      .header-row {
        gap: 10px;
      }

      .brand {
        font-size: .95rem;
      }

      .btn-sm {
        padding: 6px 14px;
        font-size: .82rem;
      }

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

      .process-steps,
      .stats-grid {
        grid-template-columns: 1fr;
      }

      .hero-actions .btn {
        width: 100%;
      }

      .hero-inner h1 {
        font-size: 2rem;
      }

      .hero-sub {
        font-size: 1rem;
      }

      .scene-content h3 {
        font-size: 1.3rem;
      }

      .cta-section {
        padding: 70px 0;
      }
    }

/* roulang page: category3 */
:root {
  --bg-primary: #0A0E27;
  --bg-secondary: #0D1333;
  --bg-card: rgba(255, 255, 255, 0.05);
  --bg-card-hover: rgba(255, 255, 255, 0.08);
  --accent: #00E5FF;
  --accent-2: #4D9FFF;
  --accent-gradient: linear-gradient(135deg, #00E5FF 0%, #4D9FFF 100%);
  --text-primary: #E6EAF2;
  --text-secondary: #9AA7B8;
  --text-muted: #5A6478;
  --border: rgba(255, 255, 255, 0.1);
  --border-hover: rgba(0, 229, 255, 0.4);
  --glow: rgba(0, 229, 255, 0.5);
  --glow-sm: rgba(0, 229, 255, 0.35);
  --radius-lg: 16px;
  --radius-sm: 10px;
  --radius-pill: 999px;
  --shadow: 0 8px 32px rgba(0, 0, 0, 0.25);
  --shadow-hover: 0 12px 40px rgba(0, 0, 0, 0.4);
  --font-family: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
  --space-section: 80px;
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-family);
  background: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.7;
  font-size: 1rem;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}

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

a {
  color: var(--accent);
  text-decoration: none;
  transition: color 0.3s ease;
}

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

button, input {
  font-family: inherit;
  font-size: inherit;
}

.grid-container {
  max-width: 1200px;
}

/* ===================== Header ===================== */
.site-header {
  position: sticky;
  top: 0;
  z-index: 999;
  background: rgba(10, 14, 39, 0.92);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--border);
  box-shadow: 0 4px 30px rgba(0, 0, 0, 0.35);
}

.header-top {
  padding: 14px 0;
}

.header-top-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  color: var(--text-primary);
  font-size: 1.15rem;
  font-weight: 700;
  white-space: nowrap;
}

.brand i {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  border-radius: 10px;
  background: var(--accent-gradient);
  color: #0A0E27;
  font-size: 1rem;
  box-shadow: 0 0 18px var(--glow-sm);
}

.brand span {
  letter-spacing: 0.01em;
}

.brand:hover {
  color: #fff;
}

.header-search {
  display: flex;
  align-items: center;
  flex: 1;
  max-width: 400px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-pill);
  padding: 4px 4px 4px 16px;
  transition: border-color 0.3s ease, box-shadow 0.3s ease;
}

.header-search:focus-within {
  border-color: var(--border-hover);
  box-shadow: 0 0 20px rgba(0, 229, 255, 0.15);
}

.header-search input {
  flex: 1;
  background: transparent;
  border: none;
  outline: none;
  color: var(--text-primary);
  font-size: 0.9rem;
  padding: 6px 0;
}

.header-search input::placeholder {
  color: var(--text-muted);
}

.header-search button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  border-radius: var(--radius-pill);
  background: transparent;
  border: none;
  cursor: pointer;
  color: var(--accent);
  transition: background 0.3s ease;
}

.header-search button:hover {
  background: rgba(0, 229, 255, 0.15);
}

.header-cta {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 9px 22px;
  border-radius: var(--radius-pill);
  background: var(--accent-gradient);
  color: #0A0E27;
  font-weight: 600;
  font-size: 0.9rem;
  border: none;
  cursor: pointer;
  transition: box-shadow 0.3s ease, transform 0.3s ease, brightness 0.3s ease;
}

.header-cta:hover {
  box-shadow: 0 0 24px var(--glow);
  transform: translateY(-2px);
  color: #0A0E27;
}

/* Channel Tabs */
.channel-tabs {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 8px 0 12px;
  overflow-x: auto;
  scrollbar-width: none;
}

.channel-tabs::-webkit-scrollbar {
  display: none;
}

.channel-tabs .tab {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 8px 18px;
  border-radius: var(--radius-pill);
  font-size: 0.875rem;
  color: var(--text-secondary);
  background: transparent;
  white-space: nowrap;
  border: 1px solid transparent;
  transition: all 0.3s ease;
}

.channel-tabs .tab i {
  font-size: 0.8rem;
}

.channel-tabs .tab:hover {
  color: var(--text-primary);
  background: rgba(255, 255, 255, 0.06);
  border-color: var(--border);
}

.channel-tabs .tab.active {
  background: var(--accent-gradient);
  color: #0A0E27;
  font-weight: 600;
  box-shadow: 0 0 20px var(--glow-sm);
}

/* ===================== Buttons ===================== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 30px;
  border-radius: var(--radius-pill);
  font-size: 0.95rem;
  font-weight: 600;
  cursor: pointer;
  border: none;
  transition: all 0.3s ease;
  text-decoration: none;
}

.btn-primary {
  background: var(--accent-gradient);
  color: #0A0E27;
  box-shadow: 0 0 20px rgba(0, 229, 255, 0.25);
}

.btn-primary:hover {
  box-shadow: 0 0 36px var(--glow);
  transform: translateY(-2px);
  color: #0A0E27;
}

.btn-outline {
  background: transparent;
  color: var(--text-primary);
  border: 1px solid rgba(255, 255, 255, 0.35);
}

.btn-outline:hover {
  background: rgba(255, 255, 255, 0.1);
  border-color: var(--accent);
  color: var(--accent);
  transform: translateY(-2px);
}

.btn:focus-visible, .header-search button:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

/* ===================== Hero ===================== */
.category-hero {
  position: relative;
  padding: 100px 0 90px;
  background: linear-gradient(135deg, rgba(10, 14, 39, 0.88) 0%, rgba(13, 19, 51, 0.72) 100%), var(--bg-primary) center/cover no-repeat;
  overflow: hidden;
}

.category-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image: linear-gradient(rgba(0, 229, 255, 0.04) 1px, transparent 1px), linear-gradient(90deg, rgba(0, 229, 255, 0.04) 1px, transparent 1px);
  background-size: 48px 48px;
  pointer-events: none;
}

.category-hero::after {
  content: "";
  position: absolute;
  top: -120px;
  right: -80px;
  width: 380px;
  height: 380px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(0, 229, 255, 0.12) 0%, transparent 70%);
  pointer-events: none;
}

.hero-inner {
  position: relative;
  z-index: 2;
  max-width: 820px;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 16px;
  border-radius: var(--radius-pill);
  background: var(--bg-card);
  border: 1px solid var(--border);
  font-size: 0.8rem;
  color: var(--accent);
  margin-bottom: 22px;
  letter-spacing: 0.02em;
}

.hero-badge i {
  font-size: 0.75rem;
}

.category-hero h1 {
  font-size: clamp(2.4rem, 5vw, 3.2rem);
  font-weight: 700;
  line-height: 1.25;
  margin-bottom: 20px;
  color: #fff;
  letter-spacing: 0.01em;
}

.category-hero h1 .highlight {
  background: var(--accent-gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-sub {
  font-size: 1.05rem;
  color: var(--text-secondary);
  line-height: 1.8;
  max-width: 680px;
  margin-bottom: 32px;
}

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

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

.section-header {
  text-align: center;
  margin-bottom: 48px;
}

.section-header h2 {
  font-size: 1.8rem;
  font-weight: 600;
  margin-bottom: 12px;
  color: #fff;
}

.section-header p {
  font-size: 0.95rem;
  color: var(--text-secondary);
  max-width: 720px;
  margin: 0 auto;
  line-height: 1.7;
}

.section-overline {
  display: inline-block;
  font-size: 0.8rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 8px;
  font-weight: 600;
}

/* ===================== Intro ===================== */
.category-intro {
  background: var(--bg-primary);
  border-bottom: 1px solid var(--border);
}

.intro-grid {
  display: grid;
  grid-template-columns: 1.2fr 1fr;
  gap: 48px;
  align-items: center;
}

.intro-text p {
  color: var(--text-secondary);
  font-size: 0.98rem;
  line-height: 1.8;
  margin-bottom: 16px;
}

.intro-text p:last-child {
  margin-bottom: 0;
}

.intro-stats {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 16px;
}

.stat-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 24px 20px;
  text-align: center;
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  transition: all 0.3s ease;
}

.stat-card:hover {
  border-color: var(--border-hover);
  box-shadow: 0 0 24px rgba(0, 229, 255, 0.1);
  transform: translateY(-4px);
}

.stat-num {
  font-size: 2rem;
  font-weight: 700;
  background: var(--accent-gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  font-variant-numeric: tabular-nums;
}

.stat-label {
  display: block;
  font-size: 0.82rem;
  color: var(--text-secondary);
  margin-top: 6px;
}

/* ===================== Guide Cards ===================== */
.guide-cards {
  background: var(--bg-secondary);
  position: relative;
  overflow: hidden;
}

.guide-cards::before {
  content: "";
  position: absolute;
  bottom: -100px;
  left: -60px;
  width: 280px;
  height: 280px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(77, 159, 255, 0.08) 0%, transparent 70%);
  pointer-events: none;
}

.guide-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  transition: all 0.35s ease;
  height: 100%;
  display: flex;
  flex-direction: column;
}

.guide-card:hover {
  border-color: var(--border-hover);
  box-shadow: var(--shadow-hover);
  transform: translateY(-4px);
}

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

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

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

.guide-card-img::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, transparent 40%, rgba(10, 14, 39, 0.65) 100%);
}

.guide-card-tag {
  position: absolute;
  top: 14px;
  left: 14px;
  z-index: 2;
  padding: 4px 14px;
  border-radius: var(--radius-pill);
  background: rgba(10, 14, 39, 0.8);
  backdrop-filter: blur(8px);
  border: 1px solid var(--border-hover);
  font-size: 0.75rem;
  color: var(--accent);
  font-weight: 500;
  letter-spacing: 0.03em;
}

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

.guide-card-body h3 {
  font-size: 1.1rem;
  font-weight: 600;
  margin-bottom: 10px;
  color: #fff;
  line-height: 1.4;
}

.guide-card-body p {
  font-size: 0.88rem;
  color: var(--text-secondary);
  line-height: 1.7;
  flex: 1;
}

.guide-card-link {
  margin-top: 16px;
  font-size: 0.85rem;
  color: var(--accent);
  font-weight: 500;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  transition: gap 0.3s ease;
}

.guide-card-link:hover {
  gap: 10px;
  color: #fff;
}

/* ===================== Process Steps ===================== */
.process-steps {
  background: var(--bg-primary);
}

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

.step-item {
  position: relative;
  padding: 28px 22px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  transition: all 0.35s ease;
  text-align: center;
}

.step-item:hover {
  border-color: var(--border-hover);
  box-shadow: 0 0 26px rgba(0, 229, 255, 0.12);
  transform: translateY(-4px);
}

.step-num {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 52px;
  height: 52px;
  border-radius: 14px;
  background: var(--accent-gradient);
  color: #0A0E27;
  font-size: 1.3rem;
  font-weight: 700;
  margin-bottom: 16px;
  box-shadow: 0 0 18px var(--glow-sm);
  font-variant-numeric: tabular-nums;
  counter-increment: step;
}

.step-item h3 {
  font-size: 1rem;
  font-weight: 600;
  margin-bottom: 8px;
  color: #fff;
}

.step-item p {
  font-size: 0.84rem;
  color: var(--text-secondary);
  line-height: 1.7;
}

/* ===================== Announcements ===================== */
.announcements {
  background: var(--bg-secondary);
  position: relative;
}

.announcement-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 26px;
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  transition: all 0.35s ease;
  display: flex;
  gap: 18px;
  height: 100%;
}

.announcement-card:hover {
  border-color: var(--border-hover);
  box-shadow: var(--shadow-hover);
  transform: translateY(-4px);
}

.announcement-icon {
  flex-shrink: 0;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 46px;
  height: 46px;
  border-radius: 12px;
  background: rgba(0, 229, 255, 0.12);
  border: 1px solid var(--border-hover);
  color: var(--accent);
  font-size: 1.1rem;
}

.announcement-content {
  flex: 1;
}

.announcement-date {
  display: inline-block;
  font-size: 0.75rem;
  color: var(--text-muted);
  margin-bottom: 6px;
  letter-spacing: 0.03em;
}

.announcement-content h3 {
  font-size: 0.98rem;
  font-weight: 600;
  margin-bottom: 8px;
  color: #fff;
  line-height: 1.45;
}

.announcement-content p {
  font-size: 0.84rem;
  color: var(--text-secondary);
  line-height: 1.7;
}

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

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

.faq-item {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  margin-bottom: 12px;
  overflow: hidden;
  transition: background 0.3s ease, border-color 0.3s ease;
}

.faq-item.active {
  background: rgba(255, 255, 255, 0.1);
  border-color: var(--border-hover);
}

.faq-question {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 18px 22px;
  cursor: pointer;
  font-size: 0.95rem;
  font-weight: 500;
  color: var(--text-primary);
  user-select: none;
  transition: color 0.3s ease;
}

.faq-question:hover {
  color: var(--accent);
}

.faq-question .faq-icon {
  flex-shrink: 0;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 26px;
  height: 26px;
  border-radius: 50%;
  background: rgba(0, 229, 255, 0.12);
  color: var(--accent);
  font-size: 0.8rem;
  transition: transform 0.3s ease, background 0.3s ease;
}

.faq-item.active .faq-icon {
  transform: rotate(45deg);
  background: rgba(0, 229, 255, 0.25);
}

.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.4s ease, padding 0.4s ease;
}

.faq-item.active .faq-answer {
  max-height: 500px;
  padding: 0 22px 18px;
}

.faq-answer p {
  font-size: 0.88rem;
  color: var(--text-secondary);
  line-height: 1.8;
  padding-top: 2px;
}

/* ===================== Related Categories ===================== */
.related-cats {
  background: var(--bg-secondary);
}

.related-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
}

.related-card {
  position: relative;
  border-radius: var(--radius-lg);
  overflow: hidden;
  min-height: 220px;
  display: flex;
  align-items: flex-end;
  border: 1px solid var(--border);
  transition: all 0.35s ease;
}

.related-card img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.5s ease;
}

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

.related-card::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(10, 14, 39, 0.2) 0%, rgba(10, 14, 39, 0.9) 100%);
}

.related-card-body {
  position: relative;
  z-index: 2;
  padding: 28px;
  width: 100%;
}

.related-card-body h3 {
  font-size: 1.15rem;
  font-weight: 600;
  color: #fff;
  margin-bottom: 8px;
}

.related-card-body p {
  font-size: 0.85rem;
  color: var(--text-secondary);
  margin-bottom: 14px;
  line-height: 1.6;
}

.related-card-body a {
  font-size: 0.85rem;
  color: var(--accent);
  font-weight: 500;
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

.related-card-body a:hover {
  gap: 10px;
  color: #fff;
}

/* ===================== CTA ===================== */
.cta-section {
  position: relative;
  padding: 90px 0;
  background: linear-gradient(135deg, rgba(10, 14, 39, 0.85) 0%, rgba(13, 19, 51, 0.9) 100%), var(--bg-primary) center/cover no-repeat;
  overflow: hidden;
  text-align: center;
}

.cta-section::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image: linear-gradient(rgba(0, 229, 255, 0.05) 1px, transparent 1px), linear-gradient(90deg, rgba(0, 229, 255, 0.05) 1px, transparent 1px);
  background-size: 60px 60px;
  pointer-events: none;
}

.cta-inner {
  position: relative;
  z-index: 2;
  max-width: 640px;
  margin: 0 auto;
}

.cta-inner h2 {
  font-size: clamp(1.8rem, 4vw, 2.4rem);
  font-weight: 700;
  color: #fff;
  margin-bottom: 16px;
}

.cta-inner p {
  font-size: 1rem;
  color: var(--text-secondary);
  margin-bottom: 30px;
  line-height: 1.7;
}

/* ===================== Footer ===================== */
.site-footer {
  background: #06091A;
  padding: 70px 0 30px;
  border-top: 1px solid rgba(0, 229, 255, 0.15);
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr 1.2fr;
  gap: 40px;
  margin-bottom: 46px;
}

.footer-brand .brand {
  margin-bottom: 14px;
}

.footer-brand p {
  font-size: 0.85rem;
  color: var(--text-muted);
  line-height: 1.8;
  max-width: 340px;
}

.footer-col h4 {
  font-size: 0.98rem;
  font-weight: 600;
  color: #fff;
  margin-bottom: 18px;
}

.footer-col ul {
  list-style: none;
}

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

.footer-col ul a {
  font-size: 0.85rem;
  color: var(--text-secondary);
  transition: color 0.3s ease;
}

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

.footer-contact li {
  font-size: 0.85rem;
  color: var(--text-secondary);
  display: flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 10px;
}

.footer-contact i {
  color: var(--accent);
  width: 18px;
  text-align: center;
}

.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.06);
  padding-top: 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  flex-wrap: wrap;
}

.footer-bottom p {
  font-size: 0.8rem;
  color: var(--text-muted);
}

.footer-bottom a {
  color: var(--text-muted);
  transition: color 0.3s ease;
}

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

/* ===================== Animations ===================== */
@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.animate {
  animation: fadeInUp 0.7s ease forwards;
}

.delay-1 { animation-delay: 0.1s; }
.delay-2 { animation-delay: 0.2s; }
.delay-3 { animation-delay: 0.3s; }
.delay-4 { animation-delay: 0.4s; }

/* ===================== Responsive ===================== */
@media (max-width: 1024px) {
  :root {
    --space-section: 64px;
  }

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

  .intro-grid {
    grid-template-columns: 1fr;
    gap: 36px;
  }

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

@media (max-width: 768px) {
  :root {
    --space-section: 48px;
  }

  .header-top-inner {
    flex-wrap: wrap;
    gap: 12px;
  }

  .header-search {
    order: 3;
    flex-basis: 100%;
    max-width: none;
  }

  .header-cta {
    padding: 8px 18px;
    font-size: 0.82rem;
  }

  .brand span {
    font-size: 0.95rem;
  }

  .channel-tabs {
    gap: 4px;
    padding: 6px 0 10px;
    margin: 0 -12px;
    padding-left: 12px;
    padding-right: 12px;
  }

  .channel-tabs .tab {
    padding: 7px 14px;
    font-size: 0.8rem;
  }

  .category-hero {
    padding: 70px 0 60px;
  }

  .category-hero h1 {
    font-size: 2rem;
  }

  .hero-sub {
    font-size: 0.95rem;
  }

  .intro-stats {
    grid-template-columns: repeat(2, 1fr);
    gap: 12px;
  }

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

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

  .related-card {
    min-height: 190px;
  }

  .cta-section {
    padding: 60px 0;
  }

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

  .footer-bottom {
    flex-direction: column;
    text-align: center;
  }
}

@media (max-width: 520px) {
  .hero-actions {
    flex-direction: column;
    width: 100%;
  }

  .hero-actions .btn {
    width: 100%;
  }

  .intro-stats {
    grid-template-columns: 1fr 1fr;
  }

  .stat-card {
    padding: 18px 14px;
  }

  .stat-num {
    font-size: 1.5rem;
  }

  .guide-card-body {
    padding: 18px;
  }

  .faq-question {
    padding: 14px 16px;
    font-size: 0.88rem;
  }

  .faq-item.active .faq-answer {
    padding: 0 16px 14px;
  }

  .announcement-card {
    padding: 18px;
    flex-direction: column;
    gap: 12px;
  }

  .announcement-icon {
    width: 40px;
    height: 40px;
    font-size: 1rem;
  }

  .section-header h2 {
    font-size: 1.5rem;
  }
}

@media (max-width: 640px) {
  .grid-container {
    padding-left: 15px;
    padding-right: 15px;
  }
}