/* roulang page: index */
:root {
  --primary: #1E4440;
  --primary-light: #2A5650;
  --primary-dark: #0E1E1C;
  --accent: #D98E32;
  --accent-dark: #B06B1E;
  --bg-warm: #F7F4EF;
  --bg-gray: #EFEBE4;
  --text-main: #1A2624;
  --text-secondary: #566A66;
  --border: #E5DED3;
  --radius-btn: 8px;
  --radius-card: 14px;
  --radius-big: 24px;
  --radius-img: 16px;
  --radius-pill: 999px;
  --shadow-card: 0 2px 12px rgba(14,30,28,.05);
  --shadow-hover: 0 16px 36px rgba(14,30,28,.10);
  --shadow-nav: 0 6px 24px rgba(14,30,28,.08);
  --font-sans: 'PingFang SC','Microsoft YaHei','Source Han Sans SC',sans-serif;
  --font-num: 'DIN Alternate','Arial Narrow',sans-serif;
}
* { margin:0; padding:0; box-sizing:border-box; }
html { scroll-behavior:smooth; }
body { font-family:var(--font-sans); background:var(--bg-warm); color:var(--text-main); line-height:1.75; -webkit-font-smoothing:antialiased; }
img { max-width:100%; display:block; }
a { color:inherit; text-decoration:none; }
button { font-family:inherit; cursor:pointer; border:none; background:none; }
input, select, textarea { font-family:inherit; }
.container { max-width:1200px; margin:0 auto; padding:0 24px; }
.section { padding:96px 0; }
.section-sm { padding:56px 0; }
.text-num { font-family:var(--font-num); font-weight:700; }
.btn { display:inline-flex; align-items:center; justify-content:center; gap:8px; font-size:15px; font-weight:600; padding:12px 24px; border-radius:var(--radius-btn); transition:all .25s ease-out; min-height:44px; white-space:nowrap; }
.btn-primary { background:var(--primary); color:#fff; }
.btn-primary:hover { background:var(--primary-light); box-shadow:0 10px 24px rgba(30,68,64,.22); }
.btn-primary:active { transform:scale(.98); }
.btn-outline { border:1px solid var(--primary); color:var(--primary); background:transparent; }
.btn-outline:hover { background:rgba(30,68,64,.06); }
.btn-outline:active { transform:scale(.98); }
.btn-accent { background:var(--accent); color:#1A2B28; }
.btn-accent:hover { filter:brightness(1.05); box-shadow:0 12px 28px rgba(217,142,50,.28); }
.btn-accent:active { transform:scale(.98); }
.btn-white { background:rgba(255,255,255,.12); color:#fff; border:1px solid rgba(255,255,255,.22); }
.btn-white:hover { background:rgba(255,255,255,.2); }
.btn-sm { padding:8px 18px; font-size:14px; min-height:38px; }

.site-header { position:fixed; top:0; left:0; right:0; z-index:50; height:64px; display:flex; align-items:center; background:rgba(247,244,239,.82); backdrop-filter:blur(12px); -webkit-backdrop-filter:blur(12px); border-bottom:1px solid rgba(229,222,211,.8); transition:background .3s ease, box-shadow .3s ease; }
.site-header.scrolled { background:rgba(247,244,239,.95); box-shadow:var(--shadow-nav); }
.header-inner { max-width:1200px; width:100%; margin:0 auto; padding:0 24px; display:grid; grid-template-columns:1fr 1fr; align-items:center; gap:24px; }
.header-left { display:flex; align-items:center; gap:40px; }
.header-right { display:flex; align-items:center; justify-content:flex-end; gap:16px; }
.logo { font-size:20px; font-weight:800; color:var(--primary); letter-spacing:.01em; line-height:1.2; }
.logo span { color:var(--accent); }
.main-nav { display:flex; align-items:center; gap:28px; }
.nav-link { font-size:14px; font-weight:500; color:var(--text-secondary); position:relative; padding:8px 0; transition:color .25s; }
.nav-link:after { content:''; position:absolute; left:0; bottom:0; width:0; height:2px; background:var(--primary); transition:width .25s ease-out; border-radius:2px; }
.nav-link:hover { color:var(--primary); }
.nav-link:hover:after { width:100%; }
.nav-link.active { color:var(--primary); font-weight:600; }
.nav-link.active:after { width:100%; }
.header-divider { width:1px; height:24px; background:var(--border); }
.search-btn { width:38px; height:38px; border-radius:8px; display:flex; align-items:center; justify-content:center; color:var(--text-secondary); transition:all .25s; font-size:15px; }
.search-btn:hover { background:rgba(30,68,64,.06); color:var(--primary); }
.menu-btn { display:none; width:40px; height:40px; border-radius:8px; align-items:center; justify-content:center; font-size:20px; color:var(--primary); }
.menu-btn:hover { background:rgba(30,68,64,.06); }

.mobile-menu { position:fixed; inset:0; z-index:60; background:var(--primary-dark); display:flex; flex-direction:column; padding:90px 32px 40px; opacity:0; visibility:hidden; transition:all .3s ease; }
.mobile-menu.open { opacity:1; visibility:visible; }
.mobile-menu .close-btn { position:absolute; top:20px; right:24px; color:#fff; font-size:24px; width:40px; height:40px; border-radius:8px; display:flex; align-items:center; justify-content:center; }
.mobile-menu .close-btn:hover { background:rgba(255,255,255,.1); }
.mobile-menu a { color:rgba(255,255,255,.92); font-size:20px; font-weight:600; padding:14px 0; border-bottom:1px solid rgba(255,255,255,.08); }
.mobile-menu .btn { margin-top:auto; }
.mobile-menu .search-field { margin-top:24px; display:flex; gap:10px; }
.mobile-menu .search-field input { flex:1; background:rgba(255,255,255,.1); border:1px solid rgba(255,255,255,.2); border-radius:8px; color:#fff; padding:12px 16px; }
.mobile-menu .search-field input::placeholder { color:rgba(255,255,255,.5); }

.hero { padding:64px 0 0; }
.hero-inner { display:grid; grid-template-columns:6fr 6fr; gap:64px; align-items:center; }
.hero-content { display:flex; flex-direction:column; gap:24px; padding:40px 0; }
.hero-badge { display:inline-flex; align-items:center; gap:8px; background:rgba(217,142,50,.12); color:var(--accent-dark); font-size:12px; font-weight:600; padding:6px 14px; border-radius:var(--radius-pill); width:fit-content; }
.hero h1 { font-size:clamp(2.2rem,4.2vw,3.4rem); font-weight:800; line-height:1.2; letter-spacing:-0.02em; color:var(--primary); }
.hero h1 em { font-style:normal; color:var(--accent); }
.hero-sub { font-size:16px; color:var(--text-secondary); max-width:480px; }
.hero-actions { display:flex; gap:14px; flex-wrap:wrap; }
.hero-trust { display:flex; align-items:center; gap:20px; padding-top:8px; font-size:13px; color:var(--text-secondary); }
.hero-trust .dot { width:3px; height:3px; border-radius:50%; background:var(--border); }
.hero-trust .star { color:var(--accent); }
.hero-visual { position:relative; padding:40px 0; }
.hero-visual .main-img { border-radius:var(--radius-img); box-shadow:var(--shadow-hover); width:100%; height:420px; object-fit:cover; }
.float-card { position:absolute; bottom:70px; right:-12px; background:#fff; border-radius:14px; box-shadow:var(--shadow-hover); padding:16px 20px; display:flex; align-items:center; gap:12px; animation:float 3s ease-in-out infinite; max-width:220px; }
.float-card .icon { width:40px; height:40px; border-radius:10px; background:rgba(217,142,50,.12); display:flex; align-items:center; justify-content:center; color:var(--accent); font-size:16px; }
.float-card .txt b { font-size:14px; display:block; color:var(--text-main); }
.float-card .txt span { font-size:12px; color:var(--text-secondary); }
.badge-circle { position:absolute; top:40px; left:-18px; width:64px; height:64px; border-radius:50%; background:var(--accent); color:#fff; display:flex; align-items:center; justify-content:center; font-size:13px; font-weight:700; text-align:center; box-shadow:0 10px 24px rgba(217,142,50,.35); transform:rotate(-8deg); }
@keyframes float { 0%,100%{ transform:translateY(0);} 50%{ transform:translateY(-6px);} }
.hero-bg-lines { position:absolute; top:0; left:0; width:100%; height:100%; pointer-events:none; z-index:-1; background:
  linear-gradient(to right, rgba(229,222,211,.5) 1px, transparent 1px) 0 0/80px 80px,
  linear-gradient(to bottom, rgba(229,222,211,.5) 1px, transparent 1px) 0 0/80px 80px;
  mask-image:radial-gradient(circle at 20% 30%, #000, transparent 70%);
  -webkit-mask-image:radial-gradient(circle at 20% 30%, #000, transparent 70%);
}

.stat-bar { border-top:1px solid var(--border); border-bottom:1px solid var(--border); background:var(--bg-gray); }
.stat-grid { display:grid; grid-template-columns:repeat(4,1fr); padding:40px 0; text-align:center; gap:24px; }
.stat-item .num { font-size:44px; font-weight:800; color:var(--primary); font-family:var(--font-num); line-height:1.1; }
.stat-item .num sup { font-size:20px; font-weight:700; color:var(--accent); }
.stat-item .label { font-size:13px; color:var(--text-secondary); margin-top:8px; }

.section-head { display:flex; align-items:flex-end; justify-content:space-between; gap:24px; margin-bottom:48px; }
.section-head h2 { font-size:clamp(1.6rem,2.6vw,2.2rem); font-weight:700; color:var(--text-main); line-height:1.3; }
.section-head h2 span { color:var(--primary); }
.section-head p { color:var(--text-secondary); font-size:15px; margin-top:8px; max-width:560px; }
.section-link { font-size:14px; font-weight:600; color:var(--primary); display:inline-flex; align-items:center; gap:6px; transition:gap .25s; }
.section-link:hover { gap:10px; }

.tier-grid { display:grid; grid-template-columns:repeat(3,1fr); gap:24px; align-items:start; }
.tier-card { background:#fff; border:1px solid var(--border); border-radius:14px; padding:32px 28px; position:relative; box-shadow:var(--shadow-card); transition:all .25s ease-out; }
.tier-card:hover { transform:translateY(-2px); box-shadow:var(--shadow-hover); border-color:var(--primary); }
.tier-card.featured { border:2px solid var(--accent); margin-top:-10px; box-shadow:0 16px 36px rgba(217,142,50,.15); }
.tier-card.featured:hover { transform:translateY(-4px); border-color:var(--accent); }
.tier-ribbon { position:absolute; top:-12px; left:50%; transform:translateX(-50%); background:var(--accent); color:#fff; font-size:12px; font-weight:600; padding:4px 16px; border-radius:var(--radius-pill); white-space:nowrap; }
.tier-name { font-size:18px; font-weight:700; color:var(--primary); display:flex; align-items:center; gap:10px; }
.tier-icon { width:44px; height:44px; border-radius:12px; display:flex; align-items:center; justify-content:center; font-size:18px; }
.tier-icon.bronze { background:rgba(205,127,50,.12); color:#b36a2e; }
.tier-icon.gold { background:rgba(217,142,50,.15); color:var(--accent-dark); }
.tier-icon.platinum { background:rgba(30,68,64,.1); color:var(--primary); }
.tier-desc { font-size:14px; color:var(--text-secondary); margin:8px 0 20px; }
.tier-benefits { list-style:none; display:flex; flex-direction:column; gap:12px; margin-bottom:24px; }
.tier-benefits li { display:flex; align-items:flex-start; gap:10px; font-size:14px; color:var(--text-main); }
.tier-benefits li i { color:var(--primary); margin-top:4px; font-size:13px; }
.tier-vs { display:flex; align-items:center; justify-content:space-between; padding-top:16px; border-top:1px solid var(--border); margin-bottom:20px; }
.tier-price b { font-size:28px; font-family:var(--font-num); color:var(--text-main); }
.tier-price span { font-size:13px; color:var(--text-secondary); }
.tier-cta { width:100%; }

.compare-grid { display:grid; grid-template-columns:repeat(3,1fr); gap:24px; }
.compare-card { background:#fff; border:1px solid var(--border); border-radius:14px; padding:32px; transition:all .25s; }
.compare-card:hover { transform:translateY(-2px); box-shadow:var(--shadow-hover); }
.compare-card.dark { background:var(--primary-dark); border-color:var(--primary-dark); color:#fff; }
.compare-card.dark:hover { transform:translateY(-2px); box-shadow:0 20px 40px rgba(14,30,28,.3); }
.compare-card.dark .cmp-name, .compare-card.dark .cmp-price { color:#fff; }
.compare-card.dark .cmp-desc, .compare-card.dark .cmp-features li { color:rgba(255,255,255,.8); }
.compare-card .reco-tag { display:inline-block; background:var(--accent); color:#1A2B28; font-size:12px; font-weight:700; padding:4px 14px; border-radius:var(--radius-pill); margin-bottom:12px; }
.cmp-name { font-size:18px; font-weight:700; color:var(--text-main); }
.cmp-desc { font-size:14px; color:var(--text-secondary); margin:6px 0 16px; }
.cmp-price { font-size:36px; font-weight:800; font-family:var(--font-num); color:var(--text-main); line-height:1.2; }
.cmp-price span { font-size:14px; font-weight:400; color:var(--text-secondary); font-family:var(--font-sans); }
.cmp-original { font-size:13px; color:var(--text-secondary); text-decoration:line-through; margin-bottom:20px; }
.cmp-features { list-style:none; display:flex; flex-direction:column; gap:12px; margin:20px 0 28px; }
.cmp-features li { display:flex; align-items:flex-start; gap:10px; font-size:14px; }
.cmp-features li i { color:var(--primary); margin-top:4px; }
.compare-card.dark .cmp-features li i { color:var(--accent); }
.cmp-features li.no i { color:#c0c9c6; }
.cmp-cta { width:100%; }

.sale-section { padding:96px 0; }
.sale-banner { background:linear-gradient(rgba(14,30,28,.82),rgba(14,30,28,.82)),url('/assets/images/backpic/back-2.webp') center/cover; border-radius:var(--radius-big); padding:72px 40px; text-align:center; position:relative; overflow:hidden; }
.sale-banner:before, .sale-banner:after { content:''; position:absolute; width:120px; height:120px; border:2px solid rgba(255,255,255,.08); border-radius:50%; }
.sale-banner:before { top:-40px; left:6%; }
.sale-banner:after { bottom:-50px; right:8%; width:160px; height:160px; }
.sale-banner h2 { font-size:clamp(1.7rem,3vw,2.4rem); font-weight:700; color:#fff; margin-bottom:12px; }
.sale-banner h2 em { color:var(--accent); font-style:normal; }
.sale-banner p { color:rgba(255,255,255,.78); font-size:15px; max-width:520px; margin:0 auto 32px; }
.countdown { display:flex; justify-content:center; gap:16px; margin-bottom:36px; }
.count-item { background:rgba(0,0,0,.45); border:1px solid rgba(217,142,50,.35); border-radius:10px; padding:14px 10px; min-width:72px; text-align:center; }
.count-item b { display:block; font-size:32px; font-family:var(--font-num); color:var(--accent); line-height:1.2; }
.count-item span { display:block; font-size:12px; color:rgba(255,255,255,.6); margin-top:4px; }
.count-item.tick b { animation:tick .6s ease-out; }
@keyframes tick { 0%{ transform:scale(1.05); } 100%{ transform:scale(1); } }
.sale-deco-dots { position:absolute; left:4%; top:50%; transform:translateY(-50%); display:flex; flex-direction:column; gap:8px; }
.sale-deco-dots i { width:6px; height:6px; border-radius:50%; background:rgba(217,142,50,.5); }

.news-grid { display:grid; grid-template-columns:repeat(3,1fr); gap:24px; }
.news-card { background:#fff; border:1px solid var(--border); border-radius:14px; overflow:hidden; box-shadow:var(--shadow-card); transition:all .25s; display:flex; flex-direction:column; }
.news-card:hover { transform:translateY(-2px); box-shadow:var(--shadow-hover); border-color:var(--primary); }
.news-card .cover { position:relative; aspect-ratio:16/10; overflow:hidden; }
.news-card .cover img { width:100%; height:100%; object-fit:cover; transition:transform .4s ease; }
.news-card:hover .cover img { transform:scale(1.04); }
.news-card .cover .cat { position:absolute; top:12px; left:12px; background:rgba(217,142,50,.92); color:#1A2B28; font-size:12px; font-weight:600; padding:4px 12px; border-radius:var(--radius-pill); }
.news-body { padding:20px 22px 22px; display:flex; flex-direction:column; flex:1; }
.news-title { font-size:16px; font-weight:600; color:var(--text-main); line-height:1.4; transition:color .2s; display:-webkit-box; -webkit-line-clamp:2; -webkit-box-orient:vertical; overflow:hidden; margin-bottom:10px; }
.news-card:hover .news-title { color:var(--primary); }
.news-excerpt { font-size:14px; color:var(--text-secondary); line-height:1.6; display:-webkit-box; -webkit-line-clamp:3; -webkit-box-orient:vertical; overflow:hidden; margin-bottom:16px; flex:1; }
.news-meta { display:flex; align-items:center; gap:14px; font-size:13px; color:var(--text-secondary); padding-top:14px; border-top:1px solid var(--border); }
.news-meta .read-more { margin-left:auto; color:var(--primary); font-weight:600; font-size:13px; display:inline-flex; align-items:center; gap:4px; }
.news-meta .read-more:hover { gap:8px; }
.news-empty { grid-column:1/-1; text-align:center; padding:48px 24px; background:#fff; border:1px dashed var(--border); border-radius:14px; color:var(--text-secondary); font-size:15px; }
.news-empty i { font-size:32px; color:var(--border); margin-bottom:12px; display:block; }

.contact-section { background:var(--bg-gray); }
.contact-grid { display:grid; grid-template-columns:5fr 7fr; gap:48px; align-items:start; }
.contact-info h3 { font-size:20px; font-weight:700; margin-bottom:8px; color:var(--text-main); }
.contact-info .sub { color:var(--text-secondary); font-size:15px; margin-bottom:24px; }
.contact-item { display:flex; align-items:flex-start; gap:14px; padding:18px 0; border-bottom:1px solid var(--border); }
.contact-item .ic { width:42px; height:42px; border-radius:10px; background:var(--primary); color:#fff; display:flex; align-items:center; justify-content:center; font-size:16px; flex-shrink:0; }
.contact-item .ic.accent { background:rgba(217,142,50,.15); color:var(--accent-dark); }
.contact-item b { display:block; font-size:15px; margin-bottom:2px; }
.contact-item span { font-size:14px; color:var(--text-secondary); }
.contact-form { background:#fff; border:1px solid var(--border); border-radius:14px; padding:32px; box-shadow:var(--shadow-card); }
.form-grid { display:grid; grid-template-columns:1fr 1fr; gap:16px; }
.form-group { display:flex; flex-direction:column; gap:6px; }
.form-group.full { grid-column:1/-1; }
.form-group label { font-size:13px; font-weight:600; color:var(--text-main); }
.form-group input, .form-group select, .form-group textarea { border:1px solid var(--border); border-radius:var(--radius-btn); background:#fff; padding:11px 14px; font-size:14px; transition:all .2s; outline:none; width:100%; min-height:44px; color:var(--text-main); }
.form-group textarea { min-height:100px; resize:vertical; }
.form-group input:focus, .form-group select:focus, .form-group textarea:focus { border-color:var(--primary); box-shadow:0 0 0 3px rgba(30,68,64,.08); }
.form-group input.error, .form-group textarea.error { border-color:#d9534f; box-shadow:0 0 0 3px rgba(217,83,79,.1); }
.form-submit { margin-top:20px; display:flex; align-items:center; gap:16px; }
.form-note { font-size:12px; color:var(--text-secondary); }

.site-footer { background:var(--primary-dark); color:rgba(255,255,255,.8); padding:64px 0 24px; }
.footer-grid { display:grid; grid-template-columns:4fr 2fr 3fr 2fr; gap:48px; margin-bottom:48px; }
.footer-brand .footer-logo { font-size:20px; font-weight:800; color:#fff; margin-bottom:16px; }
.footer-brand .footer-logo span { color:var(--accent); }
.footer-brand p { font-size:14px; line-height:1.8; max-width:280px; color:rgba(255,255,255,.7); }
.footer-col h4 { font-size:15px; font-weight:600; color:#fff; margin-bottom:18px; }
.footer-col a { display:block; font-size:14px; color:rgba(255,255,255,.72); padding:6px 0; transition:color .2s, padding-left .2s; }
.footer-col a:hover { color:var(--accent); padding-left:6px; }
.footer-col p { font-size:14px; padding:5px 0; color:rgba(255,255,255,.72); }
.social-row { display:flex; gap:12px; }
.social-row a { width:40px; height:40px; border-radius:10px; background:rgba(255,255,255,.08); display:flex; align-items:center; justify-content:center; color:rgba(255,255,255,.8); font-size:16px; transition:all .25s; }
.social-row a:hover { background:var(--accent); color:#1A2B28; transform:translateY(-2px); }
.footer-bottom { border-top:1px solid rgba(255,255,255,.1); padding-top:24px; text-align:center; font-size:13px; color:rgba(255,255,255,.5); }

.reveal { opacity:0; transform:translateY(18px); transition:opacity .6s ease, transform .6s ease; }
.reveal.is-visible { opacity:1; transform:translateY(0); }

@media (max-width:1024px) {
  .section { padding:72px 0; }
  .header-inner { grid-template-columns:1fr; gap:16px; }
  .header-left { justify-content:space-between; width:100%; }
  .main-nav { display:none; }
  .search-btn { display:none; }
  .menu-btn { display:flex; }
  .hero-inner { grid-template-columns:1fr; gap:12px; }
  .hero-content { padding-top:88px; }
  .hero-visual { padding-bottom:0; }
  .hero-visual .main-img { height:340px; }
  .tier-grid { grid-template-columns:1fr; max-width:480px; margin:0 auto; }
  .tier-card.featured { margin-top:0; }
  .compare-grid { grid-template-columns:1fr; max-width:480px; margin:0 auto; }
  .news-grid { grid-template-columns:1fr; max-width:480px; margin:0 auto; }
  .contact-grid { grid-template-columns:1fr; }
  .footer-grid { grid-template-columns:1fr 1fr; gap:32px; }
  .stat-grid { grid-template-columns:repeat(2,1fr); }
  .sale-banner { padding:56px 24px; }
}
@media (max-width:640px) {
  .section { padding:56px 0; }
  .hero h1 { font-size:2.2rem; }
  .hero-trust { flex-wrap:wrap; gap:10px; }
  .hero-visual .main-img { height:240px; }
  .float-card { bottom:40px; right:-4px; }
  .countdown { gap:8px; }
  .count-item { min-width:56px; padding:10px 6px; }
  .count-item b { font-size:20px; }
  .sale-banner { padding:48px 16px; }
  .form-grid { grid-template-columns:1fr; }
  .footer-grid { grid-template-columns:1fr; }
  .stat-grid { grid-template-columns:repeat(2,1fr); gap:16px; }
  .stat-item .num { font-size:32px; }
  .tier-card { padding:24px 20px; }
}

/* roulang page: category1 */
:root {
      --primary: #1E4440;
      --primary-hover: #2A5650;
      --accent: #D98E32;
      --accent-deep: #B06B1E;
      --bg-warm: #F7F4EF;
      --bg-gray: #EFEBE4;
      --dark: #0E1E1C;
      --text-main: #1A2624;
      --text-secondary: #566A66;
      --border: #E5DED3;
      --radius-sm: 8px;
      --radius-md: 14px;
      --radius-lg: 24px;
      --shadow-card: 0 2px 12px rgba(14,30,28,.05);
      --shadow-hover: 0 16px 36px rgba(14,30,28,.10);
      --shadow-nav: 0 6px 24px rgba(14,30,28,.08);
      --font-main: 'PingFang SC','Microsoft YaHei','Source Han Sans SC',sans-serif;
      --font-num: 'DIN Alternate','Arial Narrow',sans-serif;
    }

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

    html {
      scroll-behavior: smooth;
      scroll-padding-top: 70px;
    }

    body {
      font-family: var(--font-main);
      background: var(--bg-warm);
      color: var(--text-main);
      line-height: 1.75;
      -webkit-font-smoothing: antialiased;
    }

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

    a { text-decoration: none; color: inherit; transition: color .25s ease-out; }
    img { max-width: 100%; display: block; }
    button { font-family: inherit; cursor: pointer; }

    /* ===== Header / Nav ===== */
    .site-header {
      position: fixed;
      top: 0;
      left: 0;
      right: 0;
      height: 64px;
      background: rgba(247,244,239,.82);
      backdrop-filter: blur(12px);
      -webkit-backdrop-filter: blur(12px);
      border-bottom: 1px solid rgba(229,222,211,.8);
      z-index: 50;
      transition: background .3s ease-out, box-shadow .3s ease-out;
    }

    .site-header.scrolled {
      background: rgba(247,244,239,.96);
      box-shadow: var(--shadow-nav);
    }

    .header-inner {
      display: flex;
      align-items: center;
      justify-content: space-between;
      height: 64px;
    }

    .header-left {
      display: flex;
      align-items: center;
      gap: 36px;
    }

    .header-right {
      display: flex;
      align-items: center;
      gap: 16px;
    }

    .logo-text {
      font-size: 1.35rem;
      font-weight: 800;
      color: var(--primary);
      letter-spacing: -0.01em;
      white-space: nowrap;
    }

    .logo-text span {
      color: var(--accent);
      font-weight: 700;
    }

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

    .nav-link {
      position: relative;
      display: inline-block;
      padding: 18px 14px;
      font-size: 14px;
      font-weight: 500;
      color: var(--text-secondary);
      transition: color .25s ease-out;
    }

    .nav-link::after {
      content: '';
      position: absolute;
      left: 14px;
      right: 14px;
      bottom: 10px;
      height: 2px;
      border-radius: 2px;
      background: var(--primary);
      transform: scaleX(0);
      transition: transform .25s ease-out;
    }

    .nav-link:hover { color: var(--primary); }
    .nav-link:hover::after { transform: scaleX(1); }
    .nav-link.active { color: var(--primary); font-weight: 600; }
    .nav-link.active::after { transform: scaleX(1); }

    .btn-primary {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      background: var(--primary);
      color: #fff;
      font-size: 14px;
      font-weight: 600;
      padding: 10px 22px;
      border-radius: var(--radius-sm);
      border: none;
      transition: all .25s ease-out;
      min-height: 44px;
    }

    .btn-primary:hover {
      background: var(--primary-hover);
      transform: translateY(-1px);
      box-shadow: 0 8px 20px rgba(30,68,64,.25);
      color: #fff;
    }

    .btn-primary:active { transform: scale(.98); }
    .btn-primary:focus-visible {
      outline: 2px solid var(--accent);
      outline-offset: 2px;
    }

    .btn-primary.btn-sm {
      min-height: 40px;
      padding: 8px 18px;
      font-size: 13px;
    }

    .btn-primary.btn-lg {
      min-height: 52px;
      padding: 14px 36px;
      font-size: 16px;
    }

    .btn-outline {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      background: transparent;
      color: var(--primary);
      font-size: 14px;
      font-weight: 600;
      padding: 10px 22px;
      border-radius: var(--radius-sm);
      border: 1px solid var(--primary);
      transition: all .25s ease-out;
      min-height: 44px;
    }

    .btn-outline:hover {
      background: rgba(30,68,64,.06);
      color: var(--primary-hover);
    }

    .btn-amber {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      background: var(--accent);
      color: #fff;
      font-size: 14px;
      font-weight: 600;
      padding: 10px 22px;
      border-radius: var(--radius-sm);
      border: none;
      transition: all .25s ease-out;
      min-height: 44px;
    }

    .btn-amber:hover {
      background: #e09b3f;
      transform: translateY(-1px);
      color: #fff;
    }

    .search-btn {
      display: flex;
      align-items: center;
      justify-content: center;
      width: 40px;
      height: 40px;
      background: transparent;
      border: 1px solid var(--border);
      border-radius: var(--radius-sm);
      color: var(--text-secondary);
      transition: all .25s ease-out;
    }

    .search-btn:hover {
      color: var(--primary);
      border-color: var(--primary);
      background: rgba(30,68,64,.05);
    }

    .menu-toggle {
      display: none;
      width: 40px;
      height: 40px;
      background: transparent;
      border: 1px solid var(--border);
      border-radius: var(--radius-sm);
      color: var(--primary);
    }

    /* Mobile menu */
    .mobile-menu {
      display: none;
      position: fixed;
      top: 64px;
      left: 0;
      right: 0;
      bottom: 0;
      background: var(--dark);
      padding: 40px 32px;
      z-index: 45;
      flex-direction: column;
      gap: 20px;
    }

    .mobile-menu.open { display: flex; }

    .mobile-menu a {
      color: rgba(255,255,255,.92);
      font-size: 18px;
      font-weight: 600;
      padding: 12px 0;
      border-bottom: 1px solid rgba(255,255,255,.1);
    }

    .mobile-menu .btn-primary {
      margin-top: 20px;
      background: var(--accent);
      color: var(--dark);
    }

    /* ===== Category Hero ===== */
    .category-hero {
      position: relative;
      padding: 140px 0 80px;
      background: var(--dark) center 30% / cover no-repeat;
      background-image: url('/assets/images/backpic/back-1.png');
      color: #fff;
      overflow: hidden;
    }

    .category-hero::before {
      content: '';
      position: absolute;
      inset: 0;
      background: linear-gradient(180deg, rgba(14,30,28,.72) 0%, rgba(14,30,28,.55) 100%);
    }

    .category-hero-content {
      position: relative;
      z-index: 2;
      text-align: center;
      max-width: 720px;
    }

    .category-badge {
      display: inline-block;
      background: rgba(217,142,50,.2);
      border: 1px solid rgba(217,142,50,.35);
      color: #F3C582;
      font-size: 13px;
      font-weight: 500;
      padding: 5px 14px;
      border-radius: 999px;
      letter-spacing: .02em;
      margin-bottom: 20px;
    }

    .category-hero h1 {
      font-size: clamp(2.2rem, 4.2vw, 3.2rem);
      font-weight: 800;
      letter-spacing: -0.02em;
      line-height: 1.15;
      margin-bottom: 18px;
      color: #fff;
    }

    .category-hero p {
      font-size: 1rem;
      line-height: 1.75;
      color: rgba(255,255,255,.85);
      max-width: 560px;
      margin: 0 auto;
    }

    .category-hero-wave {
      position: absolute;
      bottom: 0;
      left: 0;
      right: 0;
      height: 40px;
      background: var(--bg-warm);
      border-radius: 40px 40px 0 0;
      z-index: 3;
    }

    /* ===== Category Layout ===== */
    .category-layout {
      display: grid;
      grid-template-columns: 2fr 1fr;
      gap: 40px;
      padding-top: 56px;
      padding-bottom: 88px;
    }

    .category-intro {
      grid-column: 1 / -1;
      text-align: center;
      max-width: 720px;
      margin: 0 auto 24px;
      color: var(--text-secondary);
      font-size: 15px;
      line-height: 1.8;
    }

    .section-bar {
      grid-column: 1 / -1;
      display: flex;
      align-items: center;
      justify-content: space-between;
      border-bottom: 1px solid var(--border);
      padding-bottom: 14px;
      margin-bottom: 28px;
    }

    .section-bar h2 {
      font-size: 1.5rem;
      font-weight: 700;
      color: var(--primary);
      letter-spacing: -0.01em;
    }

    .section-bar a {
      font-size: 14px;
      color: var(--text-secondary);
      display: inline-flex;
      align-items: center;
      gap: 6px;
    }

    .section-bar a:hover { color: var(--primary); }

    /* Article rows */
    .article-row {
      display: flex;
      gap: 20px;
      background: #fff;
      border: 1px solid var(--border);
      border-radius: var(--radius-md);
      padding: 18px;
      margin-bottom: 20px;
      transition: all .25s ease-out;
    }

    .article-row:hover {
      transform: translateY(-2px);
      box-shadow: var(--shadow-hover);
      border-color: rgba(30,68,64,.4);
    }

    .article-thumb {
      width: 220px;
      min-width: 220px;
      height: 140px;
      border-radius: 12px;
      overflow: hidden;
      background: var(--bg-gray);
    }

    .article-thumb img {
      width: 100%;
      height: 100%;
      object-fit: cover;
      transition: transform .3s ease-out;
    }

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

    .article-body {
      flex: 1;
      display: flex;
      flex-direction: column;
      padding: 4px 0;
    }

    .article-meta {
      display: flex;
      align-items: center;
      gap: 12px;
      margin-bottom: 8px;
    }

    .badge {
      display: inline-flex;
      align-items: center;
      background: rgba(217,142,50,.12);
      color: var(--accent-deep);
      font-size: 12px;
      font-weight: 500;
      padding: 4px 10px;
      border-radius: 999px;
    }

    .article-meta .date {
      font-size: 13px;
      color: var(--text-secondary);
    }

    .article-title {
      font-size: 1.05rem;
      font-weight: 600;
      line-height: 1.5;
      color: var(--text-main);
      margin-bottom: 6px;
      display: -webkit-box;
      -webkit-line-clamp: 2;
      -webkit-box-orient: vertical;
      overflow: hidden;
      transition: color .2s ease-out;
    }

    .article-row:hover .article-title { color: var(--primary); }

    .article-desc {
      font-size: 14px;
      color: var(--text-secondary);
      line-height: 1.65;
      display: -webkit-box;
      -webkit-line-clamp: 2;
      -webkit-box-orient: vertical;
      overflow: hidden;
      margin-bottom: 10px;
    }

    .read-more {
      margin-top: auto;
      font-size: 14px;
      font-weight: 500;
      color: var(--primary);
      display: inline-flex;
      align-items: center;
      gap: 6px;
    }

    .read-more:hover { color: var(--accent-deep); }
    .read-more i { font-size: 12px; transition: transform .2s ease-out; }
    .read-more:hover i { transform: translateX(3px); }

    /* Sidebar */
    .category-sidebar {
      display: flex;
      flex-direction: column;
      gap: 24px;
    }

    .sidebar-card {
      background: #fff;
      border: 1px solid var(--border);
      border-radius: var(--radius-md);
      padding: 24px;
      transition: all .25s ease-out;
    }

    .sidebar-card:hover {
      box-shadow: var(--shadow-card);
    }

    .sidebar-card h4 {
      font-size: 1rem;
      font-weight: 700;
      color: var(--primary);
      margin-bottom: 16px;
      padding-bottom: 10px;
      border-bottom: 1px solid var(--border);
      position: relative;
    }

    .sidebar-card h4::after {
      content: '';
      position: absolute;
      bottom: -1px;
      left: 0;
      width: 28px;
      height: 2px;
      background: var(--accent);
      border-radius: 2px;
    }

    .anchor-list {
      list-style: none;
      display: flex;
      flex-direction: column;
      gap: 4px;
    }

    .anchor-list a {
      display: flex;
      align-items: center;
      gap: 8px;
      padding: 8px 10px;
      font-size: 14px;
      color: var(--text-secondary);
      border-radius: var(--radius-sm);
      transition: all .2s ease-out;
    }

    .anchor-list a::before {
      content: '';
      width: 5px;
      height: 5px;
      border-radius: 50%;
      background: var(--border);
      transition: background .2s ease-out;
    }

    .anchor-list a:hover {
      color: var(--primary);
      background: rgba(30,68,64,.04);
    }

    .anchor-list a:hover::before { background: var(--accent); }

    .tag-cloud {
      display: flex;
      flex-wrap: wrap;
      gap: 8px;
    }

    .tag {
      display: inline-block;
      font-size: 13px;
      color: var(--text-secondary);
      background: var(--bg-warm);
      border: 1px solid var(--border);
      padding: 5px 12px;
      border-radius: 999px;
      transition: all .2s ease-out;
    }

    .tag:hover {
      color: #fff;
      background: var(--primary);
      border-color: var(--primary);
      transform: translateY(-1px);
    }

    .hot-panel {
      background: var(--dark);
      color: #fff;
    }

    .hot-panel h4 {
      color: #fff;
      border-bottom-color: rgba(255,255,255,.15);
    }

    .hot-panel h4::after { background: var(--accent); }

    .hot-list {
      list-style: none;
      counter-reset: hot;
      display: flex;
      flex-direction: column;
      gap: 8px;
    }

    .hot-list li {
      counter-increment: hot;
      display: flex;
      align-items: center;
      gap: 12px;
      padding: 8px 0;
      font-size: 14px;
      color: rgba(255,255,255,.85);
      border-bottom: 1px dashed rgba(255,255,255,.1);
    }

    .hot-list li:last-child { border-bottom: none; }

    .hot-list li::before {
      content: counter(hot);
      font-family: var(--font-num);
      font-size: 15px;
      font-weight: 700;
      color: var(--accent);
      width: 20px;
      text-align: center;
    }

    /* ===== CTA Section ===== */
    .cta-section {
      background: var(--dark);
      padding: 72px 0;
      position: relative;
      overflow: hidden;
    }

    .cta-section::before {
      content: '';
      position: absolute;
      top: -60px;
      right: -60px;
      width: 200px;
      height: 200px;
      border-radius: 50%;
      border: 1px solid rgba(217,142,50,.2);
    }

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

    .cta-inner h2 {
      color: #fff;
      font-size: clamp(1.6rem, 2.6vw, 2.2rem);
      font-weight: 700;
      margin-bottom: 14px;
    }

    .cta-inner p {
      color: rgba(255,255,255,.75);
      font-size: 15px;
      margin-bottom: 28px;
    }

    /* ===== FAQ ===== */
    .faq-section {
      padding: 88px 0;
      background: var(--bg-gray);
    }

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

    .faq-head h2 {
      font-size: clamp(1.6rem, 2.6vw, 2.2rem);
      font-weight: 700;
      color: var(--primary);
      margin-bottom: 8px;
    }

    .faq-head p {
      color: var(--text-secondary);
      font-size: 15px;
    }

    .faq-list {
      max-width: 780px;
      margin: 0 auto;
      display: flex;
      flex-direction: column;
      gap: 14px;
    }

    .faq-item {
      background: #fff;
      border: 1px solid var(--border);
      border-radius: var(--radius-md);
      overflow: hidden;
      transition: all .3s ease-out;
    }

    .faq-item:hover {
      border-color: rgba(30,68,64,.35);
      box-shadow: var(--shadow-card);
    }

    .faq-item summary {
      list-style: none;
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 16px;
      padding: 18px 22px;
      font-size: 15px;
      font-weight: 600;
      color: var(--text-main);
      cursor: pointer;
      user-select: none;
    }

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

    .faq-item summary::after {
      content: '\f078';
      font-family: 'Font Awesome 6 Free';
      font-weight: 900;
      font-size: 13px;
      color: var(--text-secondary);
      transition: transform .25s ease-out;
    }

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

    .faq-item .faq-answer {
      padding: 0 22px 18px;
      font-size: 14px;
      line-height: 1.75;
      color: var(--text-secondary);
    }

    /* ===== Footer ===== */
    .site-footer {
      background: var(--dark);
      color: rgba(255,255,255,.75);
      padding: 64px 0 24px;
    }

    .footer-grid {
      display: grid;
      grid-template-columns: 1.6fr 1fr 1fr 1fr;
      gap: 36px;
      margin-bottom: 36px;
    }

    .footer-logo {
      font-size: 1.5rem;
      font-weight: 800;
      color: #fff;
      margin-bottom: 12px;
    }

    .footer-logo span { color: var(--accent); }

    .footer-brand p {
      font-size: 14px;
      line-height: 1.75;
      color: rgba(255,255,255,.6);
      max-width: 300px;
    }

    .footer-col h4 {
      font-size: 15px;
      font-weight: 600;
      color: #fff;
      margin-bottom: 16px;
      position: relative;
      padding-bottom: 10px;
    }

    .footer-col h4::after {
      content: '';
      position: absolute;
      bottom: 0;
      left: 0;
      width: 22px;
      height: 2px;
      background: var(--accent);
      border-radius: 2px;
    }

    .footer-col a {
      display: block;
      font-size: 14px;
      color: rgba(255,255,255,.6);
      margin-bottom: 10px;
      transition: all .2s ease-out;
    }

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

    .footer-col p {
      font-size: 14px;
      color: rgba(255,255,255,.6);
      margin-bottom: 8px;
    }

    .social-row {
      display: flex;
      gap: 10px;
      margin-top: 12px;
    }

    .social-row a {
      display: flex;
      align-items: center;
      justify-content: center;
      width: 38px;
      height: 38px;
      background: rgba(255,255,255,.08);
      border-radius: var(--radius-sm);
      font-size: 15px;
      color: #fff;
      transition: all .25s ease-out;
    }

    .social-row a:hover {
      background: var(--accent);
      color: var(--dark);
      transform: translateY(-2px);
    }

    .footer-bottom {
      border-top: 1px solid rgba(255,255,255,.1);
      padding-top: 20px;
      text-align: center;
      font-size: 13px;
      color: rgba(255,255,255,.45);
    }

    /* ===== Reveal ===== */
    .reveal {
      opacity: 0;
      transform: translateY(18px);
      transition: opacity .6s ease-out, transform .6s ease-out;
    }

    .reveal.is-visible {
      opacity: 1;
      transform: translateY(0);
    }

    /* ===== Responsive ===== */
    @media (min-width: 1280px) {
      .header-inner, .category-layout, .cta-inner {
        padding-left: 24px;
        padding-right: 24px;
      }
    }

    @media (max-width: 1024px) {
      .main-nav { display: none; }
      .search-btn { display: none; }
      .menu-toggle { display: flex; align-items: center; justify-content: center; }

      .category-layout {
        grid-template-columns: 1fr;
      }

      .category-sidebar {
        display: grid;
        grid-template-columns: 1fr 1fr;
        gap: 20px;
      }

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

    @media (max-width: 768px) {
      .container { padding: 0 20px; }

      .header-inner { height: 60px; }
      .site-header { height: 60px; }

      .mobile-menu { top: 60px; }

      .category-hero {
        padding: 120px 0 60px;
      }

      .category-hero h1 {
        font-size: clamp(1.9rem, 5vw, 2.4rem);
      }

      .category-layout {
        padding-top: 36px;
        padding-bottom: 60px;
      }

      .article-row {
        flex-direction: column;
        padding: 16px;
      }

      .article-thumb {
        width: 100%;
        min-height: 180px;
        height: auto;
      }

      .article-thumb img {
        height: 180px;
        object-fit: cover;
      }

      .faq-section { padding: 60px 0; }
      .cta-section { padding: 56px 0; }
    }

    @media (max-width: 640px) {
      .category-sidebar {
        grid-template-columns: 1fr;
      }

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

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

      .category-hero p {
        font-size: 15px;
      }

      .section-bar {
        flex-direction: column;
        align-items: flex-start;
        gap: 10px;
      }

      .article-thumb {
        min-height: 160px;
      }

      .article-thumb img {
        height: 160px;
      }
    }

    @media (max-width: 520px) {
      .btn-primary.btn-sm {
        padding: 8px 14px;
        font-size: 12px;
      }

      .article-title {
        font-size: 1rem;
      }

      .article-desc {
        font-size: 13px;
      }

      .badge {
        font-size: 11px;
        padding: 3px 8px;
      }

      .faq-item summary {
        font-size: 14px;
        padding: 15px 16px;
      }

      .faq-item .faq-answer {
        padding: 0 16px 14px;
        font-size: 13px;
      }
    }

/* roulang page: article */
/* ============ 设计变量 ============ */
:root {
  --primary: #1E4440;
  --primary-hover: #2A5650;
  --primary-dark: #0E1E1C;
  --primary-light: rgba(30, 68, 64, .08);
  --accent: #D98E32;
  --accent-dark: #B06B1E;
  --accent-light: rgba(217, 142, 50, .12);
  --bg: #F7F4EF;
  --bg-alt: #EFEBE4;
  --text: #1A2624;
  --text-secondary: #566A66;
  --text-white: rgba(255, 255, 255, .92);
  --text-white-dim: rgba(255, 255, 255, .66);
  --border: #E5DED3;
  --radius-sm: 8px;
  --radius-md: 14px;
  --radius-lg: 24px;
  --shadow-sm: 0 2px 12px rgba(14, 30, 28, .05);
  --shadow-md: 0 16px 36px rgba(14, 30, 28, .10);
  --shadow-nav: 0 6px 24px rgba(14, 30, 28, .08);
  --font-sans: 'PingFang SC', 'Microsoft YaHei', 'Source Han Sans SC', sans-serif;
  --font-number: 'DIN Alternate', 'Arial Narrow', sans-serif;
  --header-h: 64px;
}
/* ============ Reset ============ */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}
html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}
body {
  font-family: var(--font-sans);
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
  font-size: 16px;
}
img {
  max-width: 100%;
  height: auto;
  display: block;
}
a {
  color: inherit;
  text-decoration: none;
  transition: color .2s ease-out;
}
button {
  font-family: inherit;
  cursor: pointer;
  border: none;
  background: none;
}
input, select, textarea {
  font-family: inherit;
}
ul, ol {
  list-style: none;
}
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding-left: 20px;
  padding-right: 20px;
}
/* ============ 按钮体系 ============ */
.btn-primary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: var(--primary);
  color: #fff;
  font-weight: 600;
  font-size: 14px;
  padding: 11px 28px;
  border-radius: var(--radius-sm);
  transition: background .2s ease-out, box-shadow .2s ease-out, transform .2s ease-out;
  box-shadow: 0 2px 8px rgba(30, 68, 64, .16);
  min-height: 44px;
}
.btn-primary:hover {
  background: var(--primary-hover);
  box-shadow: 0 6px 18px rgba(30, 68, 64, .24);
  transform: translateY(-1px);
  color: #fff;
}
.btn-primary:active {
  transform: scale(.98);
}
.btn-primary:focus-visible {
  outline: 3px solid rgba(217, 142, 50, .5);
  outline-offset: 2px;
}
.btn-secondary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: transparent;
  border: 1px solid var(--primary);
  color: var(--primary);
  font-weight: 600;
  font-size: 14px;
  padding: 10px 26px;
  border-radius: var(--radius-sm);
  transition: background .2s ease-out, transform .2s ease-out;
  min-height: 44px;
}
.btn-secondary:hover {
  background: var(--primary-light);
  color: var(--primary);
  transform: translateY(-1px);
}
.btn-secondary:active {
  transform: scale(.98);
}
.btn-accent {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: var(--accent);
  color: #fff;
  font-weight: 700;
  font-size: 14px;
  padding: 12px 32px;
  border-radius: var(--radius-sm);
  transition: filter .2s ease-out, transform .2s ease-out;
  box-shadow: 0 4px 16px rgba(217, 142, 50, .28);
  min-height: 44px;
}
.btn-accent:hover {
  filter: brightness(1.05);
  color: #fff;
  transform: translateY(-1px);
}
/* ============ 标签/徽章 ============ */
.badge {
  display: inline-block;
  background: var(--accent-light);
  color: var(--accent-dark);
  font-size: 12px;
  font-weight: 600;
  padding: 4px 12px;
  border-radius: 999px;
  letter-spacing: .02em;
}
.badge-dark {
  background: rgba(255, 255, 255, .15);
  color: rgba(255, 255, 255, .92);
}
.badge-solid {
  background: var(--accent);
  color: #fff;
}
/* ============ 导航 ============ */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: var(--header-h);
  z-index: 50;
  background: rgba(247, 244, 239, .82);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--border);
  transition: background .3s ease-out, box-shadow .3s ease-out;
}
.site-header.scrolled {
  background: rgba(247, 244, 239, .95);
  box-shadow: var(--shadow-nav);
}
.header-inner {
  max-width: 1400px;
  height: 100%;
  margin: 0 auto;
  padding: 0 20px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.header-left, .header-right {
  display: flex;
  align-items: center;
  gap: 32px;
}
.header-left {
  flex: 1;
}
.header-right {
  position: relative;
}
.site-logo {
  font-size: 22px;
  font-weight: 800;
  color: var(--primary);
  letter-spacing: -0.02em;
  white-space: nowrap;
}
.site-logo span {
  color: var(--accent-dark);
  font-weight: 700;
}
.main-nav {
  display: flex;
  align-items: center;
  gap: 28px;
  padding-left: 32px;
  border-left: 1px solid var(--border);
}
.nav-link {
  font-size: 14px;
  font-weight: 500;
  color: var(--text-secondary);
  padding: 8px 0;
  position: relative;
  transition: color .2s ease-out;
  white-space: nowrap;
}
.nav-link:hover {
  color: var(--primary);
}
.nav-link::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: var(--primary);
  border-radius: 2px;
  transform: scaleX(0);
  transform-origin: left;
  transition: transform .25s ease-out;
}
.nav-link:hover::after {
  transform: scaleX(1);
}
.nav-link.active {
  color: var(--primary);
  font-weight: 600;
}
.nav-link.active::after {
  transform: scaleX(1);
}
.header-right {
  display: flex;
  align-items: center;
  gap: 14px;
}
.search-toggle {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  color: var(--text-secondary);
  transition: background .2s ease-out, color .2s ease-out;
}
.search-toggle:hover {
  background: var(--primary-light);
  color: var(--primary);
}
.menu-toggle {
  display: none;
  width: 40px;
  height: 40px;
  border-radius: var(--radius-sm);
  align-items: center;
  justify-content: center;
  color: var(--text);
  font-size: 18px;
}
.header-search {
  position: absolute;
  top: calc(100% + 8px);
  right: 0;
  background: #fff;
  border: 1px solid var(--border);
  border-radius: 10px;
  box-shadow: var(--shadow-nav);
  padding: 8px;
  display: flex;
  align-items: center;
  gap: 6px;
  min-width: 280px;
  opacity: 0;
  visibility: hidden;
  transform: translateY(-6px);
  transition: opacity .25s ease-out, transform .25s ease-out, visibility .25s;
  z-index: 60;
}
.header-search.open {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}
.header-search input {
  flex: 1;
  border: 1px solid var(--border);
  border-radius: 6px;
  height: 36px;
  padding: 0 12px;
  font-size: 14px;
  background: var(--bg);
  outline: none;
  transition: border-color .2s;
}
.header-search input:focus {
  border-color: var(--primary);
}
.header-search button {
  height: 36px;
  background: var(--primary);
  color: #fff;
  border-radius: 6px;
  padding: 0 16px;
  font-size: 14px;
  font-weight: 600;
  transition: background .2s;
}
.header-search button:hover {
  background: var(--primary-hover);
}
/* ============ 移动端菜单 ============ */
.mobile-menu {
  position: fixed;
  inset: 0;
  background: var(--primary-dark);
  z-index: 49;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 32px;
  opacity: 0;
  visibility: hidden;
  transform: translateY(-20px);
  transition: opacity .3s ease-out, transform .3s ease-out, visibility .3s;
}
.mobile-menu.open {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}
.mobile-menu a {
  color: rgba(255, 255, 255, .92);
  font-size: 20px;
  font-weight: 600;
  padding: 12px 24px;
  transition: color .2s;
}
.mobile-menu a:hover {
  color: var(--accent);
}
.mobile-menu a.mobile-cta {
  margin-top: 8px;
}
/* ============ 面包屑 ============ */
.breadcrumb-wrap {
  padding: calc(var(--header-h) + 24px) 0 0;
}
.breadcrumb {
  font-size: 13px;
  color: var(--text-secondary);
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 8px;
}
.breadcrumb a {
  color: var(--text-secondary);
  transition: color .2s;
}
.breadcrumb a:hover {
  color: var(--primary);
}
.breadcrumb span.divider {
  color: #C5BEB3;
}
.breadcrumb .current {
  color: var(--text);
  font-weight: 500;
  max-width: 260px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
/* ============ 文章主体 ============ */
.article-wrap {
  padding: 32px 20px 60px;
}
.article-head {
  max-width: 820px;
  margin: 0 auto 40px;
  text-align: center;
}
.article-head .badge {
  margin-bottom: 18px;
}
.article-head h1 {
  font-size: clamp(1.8rem, 3.2vw, 2.6rem);
  font-weight: 800;
  color: var(--text);
  line-height: 1.3;
  letter-spacing: -0.02em;
  margin-bottom: 20px;
}
.article-meta {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 24px;
  font-size: 13px;
  color: var(--text-secondary);
  flex-wrap: wrap;
}
.article-meta span {
  display: inline-flex;
  align-items: center;
  gap: 6px;
}
.article-meta i {
  color: var(--accent-dark);
  font-size: 14px;
}
/* ============ 文章正文 ============ */
.article-content {
  max-width: 820px;
  margin: 0 auto;
  font-size: 16px;
  line-height: 1.85;
  color: var(--text);
}
.article-content p {
  margin-bottom: 1.6rem;
}
.article-content h2 {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--text);
  margin: 2.4rem 0 1rem;
  line-height: 1.4;
}
.article-content h3 {
  font-size: 1.18rem;
  font-weight: 600;
  color: var(--text);
  margin: 1.8rem 0 .75rem;
}
.article-content h4 {
  font-size: 1rem;
  font-weight: 600;
  color: var(--text);
  margin: 1.4rem 0 .5rem;
}
.article-content blockquote {
  border-left: 4px solid var(--primary);
  background: var(--bg-alt);
  padding: 20px 24px;
  margin: 1.5rem 0;
  border-radius: 0 10px 10px 0;
  color: var(--text-secondary);
  font-style: normal;
}
.article-content img {
  border-radius: var(--radius-md);
  margin: 1.8rem auto;
  max-width: 100%;
}
.article-content ul,
.article-content ol {
  margin: 1rem 0 1.6rem;
  padding-left: 1.4rem;
}
.article-content ul {
  list-style: disc;
}
.article-content ol {
  list-style: decimal;
}
.article-content li {
  margin-bottom: .5rem;
}
.article-content a {
  color: var(--primary);
  border-bottom: 1px solid rgba(30, 68, 64, .2);
  transition: border-color .2s, color .2s;
}
.article-content a:hover {
  color: var(--accent-dark);
  border-bottom-color: var(--accent-dark);
}
.article-content code {
  background: var(--primary-dark);
  color: #E8E2D6;
  padding: 2px 8px;
  border-radius: 5px;
  font-family: 'Courier New', monospace;
  font-size: .875rem;
}
.article-content pre {
  background: var(--primary-dark);
  color: #E8E2D6;
  padding: 20px;
  border-radius: 10px;
  overflow-x: auto;
  margin: 1.5rem 0;
  line-height: 1.6;
}
.article-content pre code {
  background: none;
  padding: 0;
  color: inherit;
}
/* ============ 文末标签/分享 ============ */
.article-foot {
  max-width: 820px;
  margin: 48px auto 0;
  border-top: 1px solid var(--border);
  padding-top: 28px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  flex-wrap: wrap;
}
.article-tags {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-wrap: wrap;
}
.tag {
  display: inline-block;
  background: var(--bg-alt);
  border: 1px solid var(--border);
  color: var(--text-secondary);
  font-size: 12px;
  padding: 4px 12px;
  border-radius: 999px;
  transition: background .2s, color .2s, border-color .2s;
}
.tag:hover {
  background: var(--primary-light);
  color: var(--primary);
  border-color: var(--primary);
}
.article-share {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 13px;
  color: var(--text-secondary);
}
.article-share a {
  width: 34px;
  height: 34px;
  border-radius: 50%;
  border: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 13px;
  color: var(--text-secondary);
  transition: background .2s, color .2s, border-color .2s, transform .2s;
}
.article-share a:hover {
  background: var(--primary);
  color: #fff;
  border-color: var(--primary);
  transform: translateY(-2px);
}
.back-link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 14px;
  color: var(--text-secondary);
  padding: 10px 0;
  transition: color .2s, transform .2s;
}
.back-link:hover {
  color: var(--primary);
  transform: translateX(-3px);
}
.back-link-row {
  max-width: 820px;
  margin: 24px auto 0;
}
/* ============ CTA条 ============ */
.article-cta {
  background: var(--primary-dark);
  border-radius: var(--radius-lg);
  padding: 36px 40px;
  margin: 16px 0 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  flex-wrap: wrap;
}
.article-cta h3 {
  color: #fff;
  font-size: 1.2rem;
  font-weight: 600;
  margin-bottom: 6px;
}
.article-cta p {
  color: rgba(255, 255, 255, .66);
  font-size: 14px;
}
/* ============ 相关推荐 ============ */
.related-section {
  padding: 64px 0 80px;
}
.section-head {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 20px;
  margin-bottom: 36px;
}
.section-head h2 {
  font-size: clamp(1.5rem, 2.4vw, 1.9rem);
  font-weight: 700;
  color: var(--text);
  letter-spacing: -0.01em;
}
.section-head .more-link {
  font-size: 14px;
  color: var(--text-secondary);
  display: inline-flex;
  align-items: center;
  gap: 4px;
  transition: color .2s, gap .2s;
}
.section-head .more-link:hover {
  color: var(--primary);
  gap: 8px;
}
.related-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.related-card {
  background: #fff;
  border-radius: var(--radius-md);
  border: 1px solid var(--border);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  transition: transform .25s ease-out, box-shadow .25s ease-out, border-color .25s ease-out;
}
.related-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
  border-color: rgba(30, 68, 64, .3);
}
.related-card .thumb {
  aspect-ratio: 16/10;
  overflow: hidden;
  position: relative;
}
.related-card .thumb img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform .35s ease-out;
}
.related-card:hover .thumb img {
  transform: scale(1.04);
}
.related-card .related-body {
  padding: 18px 20px 22px;
}
.related-card .related-title {
  font-size: 15px;
  font-weight: 600;
  color: var(--text);
  line-height: 1.5;
  margin-bottom: 8px;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
  transition: color .2s;
}
.related-card:hover .related-title {
  color: var(--primary);
}
.related-card .related-date {
  font-size: 13px;
  color: var(--text-secondary);
  display: flex;
  align-items: center;
  gap: 6px;
}
.related-card .related-date i {
  color: var(--accent-dark);
}
/* ============ 内容未找到 ============ */
.not-found {
  max-width: 560px;
  margin: 60px auto;
  text-align: center;
  background: #fff;
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 60px 40px;
  box-shadow: var(--shadow-sm);
}
.not-found i {
  font-size: 48px;
  color: var(--accent);
  margin-bottom: 20px;
}
.not-found h2 {
  font-size: 24px;
  font-weight: 700;
  margin-bottom: 12px;
  color: var(--text);
}
.not-found p {
  color: var(--text-secondary);
  font-size: 15px;
  margin-bottom: 28px;
}
/* ============ 页脚 ============ */
.site-footer {
  background: var(--primary-dark);
  color: var(--text-white);
  padding: 64px 0 24px;
}
.footer-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr 1fr;
  gap: 40px;
  margin-bottom: 48px;
}
.footer-brand p {
  color: var(--text-white-dim);
  font-size: 14px;
  line-height: 1.7;
  margin-top: 14px;
  max-width: 280px;
}
.footer-logo {
  font-size: 22px;
  font-weight: 800;
  color: #fff;
}
.footer-logo span {
  color: var(--accent);
}
.footer-col h4 {
  color: #fff;
  font-size: 15px;
  font-weight: 600;
  margin-bottom: 18px;
}
.footer-col a {
  display: block;
  color: var(--text-white-dim);
  font-size: 14px;
  padding: 6px 0;
  transition: color .2s, padding-left .2s;
}
.footer-col a:hover {
  color: var(--accent);
  padding-left: 4px;
}
.footer-col p {
  color: var(--text-white-dim);
  font-size: 14px;
  line-height: 2;
}
.social-row {
  display: flex;
  gap: 10px;
  margin-top: 4px;
}
.social-row a {
  width: 38px;
  height: 38px;
  border-radius: 50%;
  border: 1px solid rgba(255, 255, 255, .16);
  display: flex;
  align-items: center;
  justify-content: center;
  color: rgba(255, 255, 255, .75);
  font-size: 15px;
  padding: 0;
  transition: background .2s, color .2s, border-color .2s, transform .2s;
}
.social-row a:hover {
  background: var(--accent);
  color: #fff;
  border-color: var(--accent);
  transform: translateY(-3px);
}
.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, .12);
  padding-top: 24px;
  text-align: center;
  font-size: 13px;
  color: var(--text-white-dim);
}
/* ============ 响应式 ============ */
@media (max-width: 1024px) {
  .main-nav {
    gap: 20px;
    padding-left: 20px;
  }
  .header-left {
    gap: 20px;
  }
  .related-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .footer-grid {
    grid-template-columns: 1fr 1fr;
    gap: 32px;
  }
}
@media (max-width: 768px) {
  .main-nav,
  .header-right .search-toggle,
  .header-right .btn-primary {
    display: none;
  }
  .menu-toggle {
    display: inline-flex;
  }
  .header-left {
    gap: 0;
  }
  .header-right {
    gap: 6px;
  }
  .article-wrap {
    padding: 24px 16px 48px;
  }
  .article-head {
    margin-bottom: 28px;
  }
  .article-meta {
    gap: 14px;
  }
  .article-foot {
    flex-direction: column;
    align-items: flex-start;
  }
  .related-grid {
    grid-template-columns: 1fr;
  }
  .article-cta {
    padding: 28px 24px;
    flex-direction: column;
    align-items: flex-start;
  }
  .section-head {
    align-items: flex-start;
    flex-direction: column;
  }
}
@media (max-width: 520px) {
  .header-inner {
    padding: 0 14px;
  }
  .site-logo {
    font-size: 18px;
  }
  .footer-grid {
    grid-template-columns: 1fr;
    gap: 28px;
  }
  .article-cta {
    padding: 24px 20px;
  }
  .not-found {
    padding: 40px 20px;
    margin: 40px auto;
  }
}
/* ============ 动效 ============ */
.reveal {
  opacity: 0;
  transform: translateY(18px);
  transition: opacity .5s ease-out, transform .5s ease-out;
}
.reveal.is-visible {
  opacity: 1;
  transform: translateY(0);
}
@keyframes floatY {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-8px); }
}
@keyframes fadeInUp {
  from { opacity: 0; transform: translateY(12px); }
  to { opacity: 1; transform: translateY(0); }
}

/* roulang page: category2 */
/* ===== Design Tokens ===== */
        :root {
            --primary: #1E4440;
            --primary-dark: #0E1E1C;
            --primary-light: #2A5650;
            --accent: #D98E32;
            --accent-dark: #B06B1E;
            --bg-warm: #F7F4EF;
            --bg-gray: #EFEBE4;
            --text-main: #1A2624;
            --text-secondary: #566A66;
            --border: #E5DED3;
            --radius-btn: 8px;
            --radius-card: 14px;
            --radius-large: 24px;
            --shadow-card: 0 2px 12px rgba(14, 30, 28, .05);
            --shadow-hover: 0 16px 36px rgba(14, 30, 28, .10);
            --shadow-nav: 0 6px 24px rgba(14, 30, 28, .08);
            --font-main: 'PingFang SC', 'Microsoft YaHei', 'Source Han Sans SC', sans-serif;
            --font-num: 'DIN Alternate', 'Arial Narrow', sans-serif;
            --ease: 200ms ease-out;
        }

        /* ===== Reset / Base ===== */
        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            font-family: var(--font-main);
            background-color: var(--bg-warm);
            color: var(--text-main);
            line-height: 1.75;
            font-size: 1rem;
            -webkit-font-smoothing: antialiased;
        }
        img {
            max-width: 100%;
            display: block;
        }
        a {
            text-decoration: none;
            color: var(--primary);
            transition: color var(--ease);
        }
        a:hover {
            color: var(--accent-dark);
        }
        button {
            font-family: inherit;
            cursor: pointer;
            border: none;
        }
        input,
        select,
        textarea {
            font-family: inherit;
        }

        /* ===== Container ===== */
        .container-custom {
            width: 100%;
            max-width: 1240px;
            margin: 0 auto;
            padding-left: 24px;
            padding-right: 24px;
        }

        /* ===== Reveal Animation ===== */
        .reveal {
            opacity: 0;
            transform: translateY(18px);
            transition: opacity .55s ease-out, transform .55s ease-out;
        }
        .reveal.is-visible {
            opacity: 1;
            transform: translateY(0);
        }

        /* ===== Navigation ===== */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 50;
            height: 64px;
            background: rgba(247, 244, 239, .82);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border-bottom: 1px solid rgba(229, 222, 211, .7);
            transition: background .3s ease, box-shadow .3s ease;
        }
        .site-header.scrolled {
            background: rgba(247, 244, 239, .95);
            box-shadow: var(--shadow-nav);
        }
        .header-inner {
            height: 64px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 24px;
            position: relative;
        }
        .header-left {
            display: flex;
            align-items: center;
            gap: 36px;
            flex: 1;
        }
        .header-right {
            display: flex;
            align-items: center;
            gap: 16px;
        }
        .logo-text {
            font-size: 1.35rem;
            font-weight: 800;
            color: var(--primary);
            letter-spacing: -0.01em;
            white-space: nowrap;
        }
        .logo-text span {
            color: var(--accent);
        }
        .main-nav {
            display: flex;
            align-items: center;
            gap: 28px;
        }
        .nav-link {
            font-size: .875rem;
            color: var(--text-secondary);
            padding: 6px 2px;
            position: relative;
            font-weight: 500;
            transition: color var(--ease);
        }
        .nav-link::after {
            content: '';
            position: absolute;
            left: 0;
            bottom: -2px;
            width: 100%;
            height: 2px;
            background: var(--primary);
            border-radius: 2px;
            transform: scaleX(0);
            transform-origin: left;
            transition: transform var(--ease);
        }
        .nav-link:hover {
            color: var(--primary);
        }
        .nav-link:hover::after,
        .nav-link.active::after {
            transform: scaleX(1);
        }
        .nav-link.active {
            color: var(--primary);
            font-weight: 600;
        }
        .divider-line {
            width: 1px;
            height: 40px;
            background: var(--border);
            margin: 0 4px;
        }
        .btn-header {
            min-height: 44px;
        }
        .btn-primary {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            background: var(--primary);
            color: #fff;
            border-radius: var(--radius-btn);
            padding: 10px 22px;
            font-size: .875rem;
            font-weight: 600;
            border: 1px solid transparent;
            transition: background var(--ease), box-shadow var(--ease), transform var(--ease);
        }
        .btn-primary:hover {
            background: var(--primary-light);
            color: #fff;
            box-shadow: 0 7px 22px rgba(30, 68, 64, .18);
            transform: translateY(-1px);
        }
        .btn-primary:active {
            transform: scale(.98);
        }
        .btn-primary:focus-visible {
            outline: 3px solid rgba(30, 68, 64, .35);
            outline-offset: 2px;
        }
        .btn-outline {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            background: transparent;
            color: var(--primary);
            border: 1px solid var(--primary);
            border-radius: var(--radius-btn);
            padding: 10px 22px;
            font-size: .875rem;
            font-weight: 600;
            transition: background var(--ease), color var(--ease), transform var(--ease);
        }
        .btn-outline:hover {
            background: rgba(30, 68, 64, .06);
            color: var(--primary);
            transform: translateY(-1px);
        }
        .btn-outline:active {
            transform: scale(.98);
        }
        .btn-outline:focus-visible {
            outline: 3px solid rgba(30, 68, 64, .25);
            outline-offset: 2px;
        }
        .btn-accent {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            background: var(--accent);
            color: #fff;
            border-radius: var(--radius-btn);
            padding: 12px 30px;
            font-size: .9rem;
            font-weight: 700;
            transition: background var(--ease), box-shadow var(--ease), transform var(--ease);
        }
        .btn-accent:hover {
            background: #e09d45;
            color: #fff;
            box-shadow: 0 8px 26px rgba(217, 142, 50, .25);
            transform: translateY(-1px);
        }
        .btn-accent:active {
            transform: scale(.98);
        }
        .btn-accent:focus-visible {
            outline: 3px solid rgba(217, 142, 50, .35);
            outline-offset: 2px;
        }
        .icon-btn {
            width: 40px;
            height: 40px;
            display: flex;
            align-items: center;
            justify-content: center;
            border-radius: 50%;
            background: transparent;
            color: var(--text-secondary);
            font-size: .9rem;
            cursor: pointer;
            transition: background var(--ease), color var(--ease);
        }
        .icon-btn:hover {
            background: rgba(30, 68, 64, .08);
            color: var(--primary);
        }
        /* Mobile Toggle */
        .menu-toggle {
            display: none;
            width: 44px;
            height: 44px;
            align-items: center;
            justify-content: center;
            background: transparent;
            color: var(--text-main);
            font-size: 1.25rem;
            border-radius: var(--radius-btn);
            transition: background var(--ease);
        }
        .menu-toggle:hover {
            background: rgba(30, 68, 64, .06);
        }
        .mobile-drawer {
            position: fixed;
            top: 0;
            right: -100%;
            width: 100%;
            height: 100vh;
            background: var(--primary-dark);
            z-index: 60;
            transition: right .4s ease-out;
            display: flex;
            flex-direction: column;
            justify-content: center;
            align-items: center;
            gap: 28px;
        }
        .mobile-drawer.open {
            right: 0;
        }
        .mobile-drawer a {
            color: rgba(255, 255, 255, .92);
            font-size: 1.2rem;
            text-align: center;
            padding: 8px 30px;
            border-bottom: 1px solid rgba(255, 255, 255, .15);
            width: 100%;
            max-width: 280px;
            transition: color var(--ease);
        }
        .mobile-drawer a:hover {
            color: var(--accent);
        }
        .mobile-drawer a.active {
            color: var(--accent);
            font-weight: 700;
        }
        .mobile-drawer .drawer-close {
            position: absolute;
            top: 16px;
            right: 16px;
            width: 44px;
            height: 44px;
            display: flex;
            align-items: center;
            justify-content: center;
            background: transparent;
            color: #fff;
            font-size: 1.4rem;
            border-radius: 50%;
        }
        .mobile-drawer .drawer-close:hover {
            background: rgba(255, 255, 255, .1);
        }
        .drawer-cta {
            margin-top: 16px;
            background: var(--accent);
            color: #0E1E1C !important;
            font-weight: 700;
            padding: 12px 36px;
            border-radius: 50px;
            display: inline-block;
            text-align: center;
            max-width: 200px;
            border: none !important;
        }
        .drawer-cta:hover {
            background: #e09d45;
            color: #0E1E1C !important;
        }
        .drawer-search {
            display: flex;
            gap: 8px;
            margin-top: 8px;
            width: 100%;
            max-width: 280px;
        }
        .drawer-search input {
            flex: 1;
            height: 44px;
            border-radius: 8px;
            border: 1px solid rgba(255, 255, 255, .2);
            background: rgba(255, 255, 255, .1);
            color: #fff;
            padding: 0 14px;
            font-size: .875rem;
        }
        .drawer-search input::placeholder {
            color: rgba(255, 255, 255, .6);
        }
        .drawer-search button {
            width: 44px;
            height: 44px;
            border-radius: 8px;
            background: rgba(255, 255, 255, .15);
            color: #fff;
            display: flex;
            align-items: center;
            justify-content: center;
        }

        /* ===== Hero / Page Banner ===== */
        .page-hero {
            position: relative;
            padding: 160px 0 90px;
            background: url('/assets/images/backpic/back-2.webp') center center / cover no-repeat;
            overflow: hidden;
        }
        .page-hero::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(14, 30, 28, .88) 0%, rgba(14, 30, 28, .68) 100%);
        }
        .page-hero .container-custom {
            position: relative;
            z-index: 2;
            text-align: center;
        }
        .page-hero h1 {
            color: #fff;
            font-size: clamp(2rem, 4.2vw, 3rem);
            font-weight: 800;
            letter-spacing: -0.02em;
            margin-bottom: 18px;
            line-height: 1.25;
        }
        .page-hero p {
            color: rgba(255, 255, 255, .85);
            max-width: 620px;
            margin: 0 auto;
            font-size: 1.05rem;
            line-height: 1.8;
        }
        .hero-badge {
            display: inline-block;
            background: rgba(217, 142, 50, .22);
            border: 1px solid rgba(217, 142, 50, .5);
            color: #f0b46f;
            font-size: .75rem;
            font-weight: 600;
            padding: 5px 16px;
            border-radius: 999px;
            margin-bottom: 22px;
            letter-spacing: .06em;
        }

        /* ===== Section Base ===== */
        .section-pad {
            padding: 96px 0;
        }
        .section-pad-tight {
            padding: 64px 0;
        }
        .section-title {
            font-size: clamp(1.6rem, 2.6vw, 2.2rem);
            font-weight: 700;
            color: var(--text-main);
            line-height: 1.35;
            margin-bottom: 12px;
            letter-spacing: -0.01em;
        }
        .section-sub {
            color: var(--text-secondary);
            font-size: .95rem;
            max-width: 540px;
            line-height: 1.7;
        }
        .section-head {
            display: flex;
            align-items: flex-end;
            justify-content: space-between;
            gap: 24px;
            margin-bottom: 48px;
            flex-wrap: wrap;
        }
        .section-more {
            font-size: .875rem;
            font-weight: 600;
            color: var(--primary);
            display: inline-flex;
            align-items: center;
            gap: 6px;
            white-space: nowrap;
            transition: gap var(--ease);
        }
        .section-more:hover {
            gap: 10px;
            color: var(--accent-dark);
        }

        /* ===== Masonry Cards ===== */
        .masonry {
            column-count: 3;
            column-gap: 24px;
        }
        .masonry-item {
            break-inside: avoid;
            margin-bottom: 24px;
        }
        .activity-card {
            background: #fff;
            border-radius: var(--radius-card);
            border: 1px solid var(--border);
            box-shadow: var(--shadow-card);
            overflow: hidden;
            transition: transform var(--ease), box-shadow var(--ease), border-color var(--ease);
            display: flex;
            flex-direction: column;
        }
        .activity-card:hover {
            transform: translateY(-3px);
            box-shadow: var(--shadow-hover);
            border-color: rgba(30, 68, 64, .4);
        }
        .activity-card .card-img {
            overflow: hidden;
            position: relative;
        }
        .activity-card .card-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform .35s ease-out;
        }
        .activity-card:hover .card-img img {
            transform: scale(1.04);
        }
        .card-img-ratio-1 {
            aspect-ratio: 4 / 3;
        }
        .card-img-ratio-2 {
            aspect-ratio: 16 / 10;
        }
        .card-img-ratio-3 {
            aspect-ratio: 4 / 5;
        }
        .card-img-ratio-4 {
            aspect-ratio: 1 / 1;
        }
        .card-tag {
            position: absolute;
            top: 14px;
            left: 14px;
            background: rgba(217, 142, 50, .92);
            color: #fff;
            font-size: .7rem;
            font-weight: 700;
            padding: 4px 12px;
            border-radius: 999px;
            letter-spacing: .02em;
            backdrop-filter: blur(4px);
        }
        .card-body {
            padding: 22px;
            display: flex;
            flex-direction: column;
            flex: 1;
        }
        .card-body .card-title {
            font-size: 1.1rem;
            font-weight: 700;
            color: var(--text-main);
            margin-bottom: 8px;
            line-height: 1.4;
        }
        .card-body .card-desc {
            font-size: .875rem;
            color: var(--text-secondary);
            line-height: 1.65;
            margin-bottom: 14px;
            flex: 1;
        }
        .card-meta {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: .78rem;
            color: var(--text-secondary);
            margin-bottom: 16px;
            padding-top: 12px;
            border-top: 1px solid var(--border);
        }
        .card-meta i {
            color: var(--accent);
            font-size: .75rem;
        }
        .card-btn-wrap {
            margin-top: auto;
        }
        .btn-sm {
            padding: 8px 20px;
            font-size: .8rem;
            min-height: 40px;
        }
        .btn-card {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 6px;
            width: 100%;
            background: var(--primary);
            color: #fff;
            border-radius: var(--radius-btn);
            padding: 10px 0;
            font-size: .875rem;
            font-weight: 600;
            transition: background var(--ease), box-shadow var(--ease), transform var(--ease);
        }
        .btn-card:hover {
            background: var(--primary-light);
            color: #fff;
            box-shadow: 0 6px 18px rgba(30, 68, 64, .15);
        }
        .btn-card:active {
            transform: scale(.98);
        }

        /* ===== Advantages ===== */
        .adv-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
        }
        .adv-card {
            background: #fff;
            border: 1px solid var(--border);
            border-radius: var(--radius-card);
            padding: 28px 24px;
            text-align: center;
            box-shadow: var(--shadow-card);
            transition: transform var(--ease), box-shadow var(--ease);
        }
        .adv-card:hover {
            transform: translateY(-3px);
            box-shadow: var(--shadow-hover);
        }
        .adv-icon {
            width: 56px;
            height: 56px;
            margin: 0 auto 16px;
            border-radius: 50%;
            background: rgba(30, 68, 64, .08);
            color: var(--primary);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.25rem;
        }
        .adv-card h3 {
            font-size: 1rem;
            font-weight: 700;
            color: var(--text-main);
            margin-bottom: 8px;
        }
        .adv-card p {
            font-size: .8125rem;
            color: var(--text-secondary);
            line-height: 1.65;
        }

        /* ===== Steps ===== */
        .steps-wrap {
            background: var(--bg-gray);
            border-radius: var(--radius-large);
            padding: 60px 48px;
        }
        .steps-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 32px;
        }
        .step-item {
            text-align: center;
            position: relative;
        }
        .step-num {
            width: 44px;
            height: 44px;
            margin: 0 auto 14px;
            border-radius: 50%;
            background: var(--primary);
            color: #fff;
            font-family: var(--font-num);
            font-size: 1.1rem;
            font-weight: 700;
            display: flex;
            align-items: center;
            justify-content: center;
        }
        .step-item h4 {
            font-size: .95rem;
            font-weight: 700;
            color: var(--text-main);
            margin-bottom: 6px;
        }
        .step-item p {
            font-size: .8rem;
            color: var(--text-secondary);
            line-height: 1.6;
        }
        .step-item::after {
            content: '→';
            position: absolute;
            top: 12px;
            right: -22px;
            color: var(--border);
            font-size: 1.25rem;
            font-weight: 700;
        }
        .step-item:last-child::after {
            display: none;
        }

        /* ===== Hot Feature ===== */
        .hot-card {
            background: var(--primary-dark);
            border-radius: var(--radius-large);
            overflow: hidden;
            display: grid;
            grid-template-columns: 1.1fr 1fr;
            min-height: 400px;
            color: #fff;
        }
        .hot-card .hot-img {
            background-size: cover;
            background-position: center;
            min-height: 320px;
            position: relative;
        }
        .hot-card .hot-img::after {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(to right, transparent 20%, rgba(14, 30, 28, .85) 100%);
        }
        .hot-content {
            padding: 56px;
            display: flex;
            flex-direction: column;
            justify-content: center;
            position: relative;
            z-index: 2;
        }
        .hot-content .hot-badge {
            display: inline-block;
            background: rgba(217, 142, 50, .25);
            color: #f0b46f;
            font-size: .75rem;
            font-weight: 700;
            padding: 5px 14px;
            border-radius: 999px;
            margin-bottom: 18px;
            align-self: flex-start;
        }
        .hot-content h3 {
            font-size: 1.5rem;
            font-weight: 700;
            margin-bottom: 12px;
        }
        .hot-content p {
            font-size: .9125rem;
            color: rgba(255, 255, 255, .75);
            line-height: 1.75;
            margin-bottom: 24px;
        }
        .btn-white {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            background: rgba(255, 255, 255, .1);
            color: #fff;
            border: 1px solid rgba(255, 255, 255, .2);
            border-radius: var(--radius-btn);
            padding: 12px 28px;
            font-size: .875rem;
            font-weight: 600;
            transition: background var(--ease), transform var(--ease);
            align-self: flex-start;
        }
        .btn-white:hover {
            background: rgba(255, 255, 255, .2);
            color: #fff;
            transform: translateY(-1px);
        }
        .btn-white:active {
            transform: scale(.98);
        }

        /* ===== FAQ ===== */
        .faq-list {
            max-width: 860px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 14px;
        }
        .faq-item {
            border: 1px solid var(--border);
            border-radius: var(--radius-card);
            background: #fff;
            box-shadow: var(--shadow-card);
            overflow: hidden;
            transition: box-shadow var(--ease), border-color var(--ease);
        }
        .faq-item:hover {
            border-color: rgba(30, 68, 64, .3);
            box-shadow: var(--shadow-hover);
        }
        .faq-item details {
            padding: 0;
        }
        .faq-item details>summary {
            padding: 20px 24px;
            cursor: pointer;
            font-size: .95rem;
            font-weight: 600;
            color: var(--text-main);
            display: flex;
            justify-content: space-between;
            align-items: center;
            gap: 16px;
            list-style: none;
            transition: color var(--ease);
        }
        .faq-item details>summary::-webkit-details-marker {
            display: none;
        }
        .faq-item details>summary:hover {
            color: var(--primary);
        }
        .faq-item details>summary .faq-arrow {
            color: var(--accent);
            font-size: .85rem;
            transition: transform .25s ease;
            flex-shrink: 0;
        }
        .faq-item details[open]>.faq-arrow,
        .faq-item details[open]>summary .faq-arrow {
            transform: rotate(180deg);
        }
        .faq-item details[open]>summary {
            color: var(--primary);
            border-bottom: 1px solid var(--border);
        }
        .faq-item .faq-answer {
            padding: 18px 24px 20px;
            font-size: .875rem;
            color: var(--text-secondary);
            line-height: 1.75;
            background: var(--bg-warm);
        }

        /* ===== CTA ===== */
        .cta-section {
            padding: 80px 0;
            background: url('/assets/images/backpic/back-1.png') center center / cover no-repeat;
            position: relative;
            border-radius: var(--radius-large);
            margin: 0 24px;
            overflow: hidden;
        }
        .cta-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: rgba(14, 30, 28, .75);
        }
        .cta-inner {
            position: relative;
            z-index: 2;
            text-align: center;
            max-width: 680px;
            margin: 0 auto;
            padding: 40px 24px;
        }
        .cta-inner h2 {
            color: #fff;
            font-size: clamp(1.6rem, 2.8vw, 2.2rem);
            font-weight: 700;
            margin-bottom: 14px;
            letter-spacing: -0.01em;
        }
        .cta-inner p {
            color: rgba(255, 255, 255, .8);
            font-size: .95rem;
            line-height: 1.75;
            margin-bottom: 28px;
        }

        /* ===== Footer ===== */
        .site-footer {
            background: var(--primary-dark);
            color: rgba(255, 255, 255, .8);
            padding: 64px 0 24px;
            margin-top: 80px;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 1.4fr 1fr 1fr 1fr;
            gap: 48px;
            margin-bottom: 48px;
        }
        .footer-logo {
            font-size: 1.35rem;
            font-weight: 800;
            color: #fff;
            margin-bottom: 14px;
        }
        .footer-logo span {
            color: var(--accent);
        }
        .footer-brand p {
            font-size: .85rem;
            color: rgba(255, 255, 255, .6);
            line-height: 1.8;
            max-width: 300px;
        }
        .footer-col h4 {
            font-size: .95rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: 18px;
            letter-spacing: .02em;
        }
        .footer-col a {
            display: block;
            font-size: .85rem;
            color: rgba(255, 255, 255, .6);
            margin-bottom: 10px;
            transition: color var(--ease), padding-left var(--ease);
        }
        .footer-col a:hover {
            color: var(--accent);
            padding-left: 4px;
        }
        .footer-col p {
            font-size: .85rem;
            color: rgba(255, 255, 255, .6);
            margin-bottom: 10px;
        }
        .social-row {
            display: flex;
            gap: 12px;
            margin-bottom: 16px;
        }
        .social-row a {
            width: 38px;
            height: 38px;
            display: flex;
            align-items: center;
            justify-content: center;
            border-radius: 50%;
            background: rgba(255, 255, 255, .1);
            color: #fff;
            font-size: .9rem;
            padding-left: 0 !important;
            transition: background var(--ease), color var(--ease), transform var(--ease);
        }
        .social-row a:hover {
            background: var(--accent);
            color: #fff !important;
            transform: translateY(-2px);
        }
        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, .1);
            padding-top: 24px;
            text-align: center;
        }
        .footer-bottom p {
            font-size: .8rem;
            color: rgba(255, 255, 255, .4);
        }

        /* ===== Responsive ===== */
        @media (max-width: 1024px) {
            .masonry {
                column-count: 2;
            }
            .adv-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .steps-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 40px;
            }
            .step-item::after {
                display: none;
            }
            .footer-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 32px;
            }
            .header-right .divider-line,
            .header-right .icon-btn {
                display: none;
            }
            .main-nav {
                gap: 18px;
            }
            .hot-card {
                grid-template-columns: 1fr;
            }
            .hot-content {
                padding: 40px 32px;
            }
        }
        @media (max-width: 768px) {
            .main-nav {
                display: none;
            }
            .menu-toggle {
                display: flex;
            }
            .header-left {
                gap: 16px;
            }
            .header-right .btn-header {
                display: none;
            }
            .section-pad {
                padding: 56px 0;
            }
            .page-hero {
                padding: 120px 0 56px;
            }
            .masonry {
                column-count: 1;
            }
            .adv-grid {
                grid-template-columns: 1fr;
            }
            .steps-grid {
                grid-template-columns: 1fr;
            }
            .footer-grid {
                grid-template-columns: 1fr;
            }
            .cta-section {
                margin: 0 12px;
                border-radius: var(--radius-card);
            }
            .cta-inner {
                padding: 24px 16px;
            }
        }
        @media (max-width: 520px) {
            .container-custom {
                padding-left: 16px;
                padding-right: 16px;
            }
            .logo-text {
                font-size: 1.1rem;
            }
            .page-hero h1 {
                font-size: 1.55rem;
            }
            .page-hero p {
                font-size: .875rem;
            }
            .section-head {
                flex-direction: column;
                align-items: flex-start;
                gap: 12px;
            }
            .hot-card .hot-img {
                min-height: 200px;
            }
            .hot-content {
                padding: 28px 20px;
            }
            .footer-grid {
                gap: 28px;
            }
        }

        /* Focus visibility */
        a:focus-visible,
        button:focus-visible,
        input:focus-visible,
        select:focus-visible,
        textarea:focus-visible {
            outline: 3px solid rgba(30, 68, 64, .3);
            outline-offset: 2px;
        }
        input:focus,
        select:focus,
        textarea:focus {
            border-color: var(--primary) !important;
            box-shadow: 0 0 0 3px rgba(30, 68, 64, .08);
        }

/* roulang page: category3 */
:root {
      --brand: #1E4440;
      --brand-dark: #0E1E1C;
      --brand-light: #2A5650;
      --amber: #D98E32;
      --amber-dark: #B06B1E;
      --bg: #F7F4EF;
      --bg-alt: #EFEBE4;
      --text: #1A2624;
      --text-sub: #566A66;
      --text-light: rgba(255, 255, 255, .92);
      --border: #E5DED3;
      --radius-sm: 8px;
      --radius-md: 14px;
      --radius-lg: 24px;
      --shadow-card: 0 2px 12px rgba(14, 30, 28, .05);
      --shadow-hover: 0 16px 36px rgba(14, 30, 28, .10);
      --shadow-nav: 0 6px 24px rgba(14, 30, 28, .08);
      --font-main: 'PingFang SC', 'Microsoft YaHei', 'Source Han Sans SC', sans-serif;
    }

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

    html {
      scroll-behavior: smooth;
    }

    body {
      font-family: var(--font-main);
      background: var(--bg);
      color: var(--text);
      line-height: 1.75;
      -webkit-font-smoothing: antialiased;
    }

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

    a {
      color: inherit;
      text-decoration: none;
      transition: color .25s ease-out;
    }

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

    input,
    select,
    textarea {
      font-family: inherit;
    }

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

    /* ===== Buttons ===== */
    .btn {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      gap: 8px;
      min-height: 44px;
      padding: 0 24px;
      border-radius: var(--radius-sm);
      font-size: 15px;
      font-weight: 600;
      letter-spacing: .02em;
      transition: all .25s ease-out;
      white-space: nowrap;
    }

    .btn-primary {
      background: var(--brand);
      color: #fff;
      box-shadow: 0 4px 14px rgba(30, 68, 64, .18);
    }

    .btn-primary:hover {
      background: var(--brand-light);
      transform: translateY(-1px);
      box-shadow: 0 8px 22px rgba(30, 68, 64, .24);
    }

    .btn-primary:active {
      transform: scale(.98);
      box-shadow: 0 2px 8px rgba(30, 68, 64, .16);
    }

    .btn-outline {
      border: 1px solid var(--brand);
      color: var(--brand);
      background: transparent;
    }

    .btn-outline:hover {
      background: rgba(30, 68, 64, .06);
      transform: translateY(-1px);
    }

    .btn-outline:active {
      transform: scale(.98);
    }

    .btn-amber {
      background: var(--amber);
      color: #1A2624;
      box-shadow: 0 4px 16px rgba(217, 142, 50, .30);
    }

    .btn-amber:hover {
      filter: brightness(1.05);
      transform: translateY(-1px);
      box-shadow: 0 8px 24px rgba(217, 142, 50, .36);
    }

    .btn-amber:active {
      transform: scale(.98);
    }

    .btn-light {
      background: rgba(255, 255, 255, .10);
      color: #fff;
      border: 1px solid rgba(255, 255, 255, .22);
    }

    .btn-light:hover {
      background: rgba(255, 255, 255, .20);
      border-color: rgba(255, 255, 255, .35);
    }

    .btn-sm {
      min-height: 38px;
      padding: 0 18px;
      font-size: 14px;
    }

    .btn:focus-visible {
      outline: 3px solid rgba(30, 68, 64, .35);
      outline-offset: 2px;
    }

    /* ===== Badge ===== */
    .badge {
      display: inline-flex;
      align-items: center;
      padding: 4px 12px;
      border-radius: 999px;
      font-size: 12px;
      font-weight: 600;
      letter-spacing: .03em;
    }

    .badge-amber {
      background: rgba(217, 142, 50, .12);
      color: var(--amber-dark);
    }

    .badge-light {
      background: rgba(255, 255, 255, .16);
      color: #fff;
      border: 1px solid rgba(255, 255, 255, .24);
    }

    .badge-outline {
      border: 1px solid var(--border);
      color: var(--text-sub);
      background: #fff;
    }

    /* ===== Header & Nav ===== */
    .site-header {
      position: fixed;
      top: 0;
      left: 0;
      right: 0;
      z-index: 100;
      height: 64px;
      background: rgba(247, 244, 239, .82);
      backdrop-filter: blur(12px);
      -webkit-backdrop-filter: blur(12px);
      border-bottom: 1px solid rgba(229, 222, 211, .70);
      transition: background .3s ease, box-shadow .3s ease;
    }

    .site-header.scrolled {
      background: rgba(247, 244, 239, .95);
      box-shadow: var(--shadow-nav);
    }

    .nav-inner {
      height: 64px;
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 20px;
    }

    .nav-left {
      display: flex;
      align-items: center;
      gap: 32px;
      flex: 1;
      min-width: 0;
    }

    .logo {
      font-size: 20px;
      font-weight: 800;
      color: var(--brand);
      letter-spacing: -.01em;
      white-space: nowrap;
      line-height: 1;
    }

    .logo span {
      color: var(--amber);
    }

    .main-nav {
      display: flex;
      align-items: center;
      gap: 28px;
    }

    .nav-link {
      position: relative;
      font-size: 14px;
      font-weight: 500;
      color: var(--text-sub);
      padding: 20px 0 18px;
      transition: color .25s ease-out;
      white-space: nowrap;
    }

    .nav-link::after {
      content: '';
      position: absolute;
      left: 0;
      right: 0;
      bottom: 0;
      height: 2px;
      background: var(--brand);
      border-radius: 2px 2px 0 0;
      transform: scaleX(0);
      transform-origin: left center;
      transition: transform .25s ease-out;
    }

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

    .nav-link:hover::after {
      transform: scaleX(1);
    }

    .nav-link.active {
      color: var(--brand);
      font-weight: 700;
    }

    .nav-link.active::after {
      transform: scaleX(1);
    }

    .nav-right {
      display: flex;
      align-items: center;
      gap: 14px;
      flex-shrink: 0;
    }

    .search-btn {
      width: 38px;
      height: 38px;
      display: flex;
      align-items: center;
      justify-content: center;
      border-radius: 50%;
      color: var(--text-sub);
      font-size: 15px;
      transition: all .25s ease-out;
    }

    .search-btn:hover {
      background: rgba(30, 68, 64, .08);
      color: var(--brand);
    }

    .search-btn:focus-visible {
      outline: 3px solid rgba(30, 68, 64, .30);
      outline-offset: 2px;
    }

    .nav-toggle {
      display: none;
      width: 40px;
      height: 40px;
      flex-direction: column;
      align-items: center;
      justify-content: center;
      gap: 5px;
      border-radius: var(--radius-sm);
    }

    .nav-toggle span {
      display: block;
      width: 20px;
      height: 2px;
      background: var(--text);
      border-radius: 2px;
      transition: all .3s ease-out;
    }

    body.nav-open .nav-toggle span:nth-child(1) {
      transform: translateY(7px) rotate(45deg);
    }

    body.nav-open .nav-toggle span:nth-child(2) {
      opacity: 0;
    }

    body.nav-open .nav-toggle span:nth-child(3) {
      transform: translateY(-7px) rotate(-45deg);
    }

    /* Mobile menu */
    .mobile-menu {
      position: fixed;
      inset: 0;
      z-index: 95;
      background: var(--brand-dark);
      display: flex;
      flex-direction: column;
      padding: 96px 32px 40px;
      opacity: 0;
      visibility: hidden;
      transform: translateY(-12px);
      transition: opacity .3s ease-out, transform .3s ease-out, visibility .3s ease-out;
    }

    body.nav-open .mobile-menu {
      opacity: 1;
      visibility: visible;
      transform: translateY(0);
    }

    .mobile-menu .mobile-nav-links {
      display: flex;
      flex-direction: column;
      gap: 8px;
      flex: 1;
    }

    .mobile-menu .mobile-nav-links a {
      color: rgba(255, 255, 255, .88);
      font-size: 20px;
      font-weight: 600;
      padding: 14px 4px;
      border-bottom: 1px solid rgba(255, 255, 255, .10);
      transition: color .25s ease-out, padding-left .25s ease-out;
    }

    .mobile-menu .mobile-nav-links a:hover,
    .mobile-menu .mobile-nav-links a.active {
      color: #fff;
      padding-left: 12px;
    }

    .mobile-menu .mobile-cta-row {
      display: flex;
      gap: 14px;
      margin-top: 28px;
    }

    .mobile-menu .mobile-cta-row .btn {
      flex: 1;
    }

    .navbar-split-line {
      display: none;
    }

    /* ===== Hero ===== */
    .community-hero {
      position: relative;
      padding: 160px 0 72px;
      background: var(--brand-dark);
      overflow: hidden;
    }

    .community-hero .hero-bg {
      position: absolute;
      inset: 0;
      background-image: url('/assets/images/backpic/back-2.webp');
      background-size: cover;
      background-position: center;
      opacity: .42;
    }

    .community-hero .hero-bg::after {
      content: '';
      position: absolute;
      inset: 0;
      background: linear-gradient(180deg, rgba(14, 30, 28, .30) 0%, rgba(14, 30, 28, .72) 100%);
    }

    .hero-content {
      position: relative;
      z-index: 2;
      text-align: center;
      max-width: 760px;
      margin: 0 auto;
    }

    .hero-content h1 {
      font-size: clamp(2.2rem, 4.2vw, 3.2rem);
      font-weight: 800;
      color: #fff;
      letter-spacing: -.02em;
      line-height: 1.18;
      margin: 18px 0 16px;
    }

    .hero-content p {
      font-size: 16px;
      color: rgba(255, 255, 255, .72);
      line-height: 1.8;
      max-width: 620px;
      margin: 0 auto;
    }

    /* ===== Sections ===== */
    .section {
      padding: 96px 0;
    }

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

    .section-head {
      text-align: center;
      max-width: 720px;
      margin: 0 auto 48px;
    }

    .section-head h2 {
      font-size: clamp(1.6rem, 2.6vw, 2.2rem);
      font-weight: 700;
      color: var(--text);
      letter-spacing: -.01em;
      margin-bottom: 12px;
    }

    .section-head p {
      color: var(--text-sub);
      font-size: 15px;
      line-height: 1.75;
    }

    /* ===== Stat strip ===== */
    .stat-strip {
      border-top: 1px solid var(--border);
      border-bottom: 1px solid var(--border);
      padding: 56px 0;
      background: var(--bg);
    }

    .stat-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 32px;
      text-align: center;
    }

    .stat-item .stat-num {
      font-family: 'DIN Alternate', 'Arial Narrow', sans-serif;
      font-size: 2.6rem;
      font-weight: 700;
      color: var(--brand);
      line-height: 1.1;
    }

    .stat-item .stat-label {
      margin-top: 8px;
      font-size: 13px;
      color: var(--text-sub);
    }

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

    .advantage-card {
      background: #fff;
      border: 1px solid var(--border);
      border-radius: var(--radius-md);
      overflow: hidden;
      box-shadow: var(--shadow-card);
      transition: transform .25s ease-out, box-shadow .25s ease-out, border-color .25s ease-out;
    }

    .advantage-card:hover {
      transform: translateY(-4px);
      box-shadow: var(--shadow-hover);
      border-color: rgba(30, 68, 64, .30);
    }

    .advantage-card .advantage-img {
      height: 180px;
      overflow: hidden;
    }

    .advantage-card .advantage-img img {
      width: 100%;
      height: 100%;
      object-fit: cover;
      transition: transform .35s ease-out;
    }

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

    .advantage-card .advantage-body {
      padding: 24px;
    }

    .advantage-card .advantage-body h3 {
      font-size: 18px;
      font-weight: 600;
      color: var(--text);
      margin-bottom: 8px;
      display: flex;
      align-items: center;
      gap: 8px;
    }

    .advantage-card .advantage-body h3 i {
      color: var(--amber);
      font-size: 16px;
    }

    .advantage-card .advantage-body p {
      font-size: 14px;
      color: var(--text-sub);
      line-height: 1.7;
    }

    /* ===== Community main ===== */
    .community-main {
      padding: 96px 0;
      background: var(--bg);
    }

    .community-grid {
      display: grid;
      grid-template-columns: 1fr 360px;
      gap: 40px;
      align-items: start;
    }

    .section-title-row {
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 16px;
      margin-bottom: 28px;
      flex-wrap: wrap;
    }

    .section-title-row h2 {
      font-size: 24px;
      font-weight: 700;
      color: var(--text);
      letter-spacing: -.01em;
    }

    .section-title-row .more-link {
      font-size: 14px;
      color: var(--text-sub);
      display: inline-flex;
      align-items: center;
      gap: 6px;
      transition: color .25s ease-out, gap .25s ease-out;
    }

    .section-title-row .more-link:hover {
      color: var(--brand);
      gap: 10px;
    }

    /* ===== Post feed ===== */
    .post-feed {
      display: flex;
      flex-direction: column;
      gap: 16px;
    }

    .post-item {
      display: flex;
      gap: 18px;
      background: #fff;
      border: 1px solid var(--border);
      border-radius: var(--radius-md);
      padding: 20px 22px;
      box-shadow: var(--shadow-card);
      transition: transform .25s ease-out, box-shadow .25s ease-out, border-color .25s ease-out;
    }

    .post-item:hover {
      transform: translateY(-2px);
      box-shadow: var(--shadow-hover);
      border-color: rgba(30, 68, 64, .28);
    }

    .post-avatar {
      width: 48px;
      height: 48px;
      border-radius: 50%;
      display: flex;
      align-items: center;
      justify-content: center;
      color: #fff;
      font-weight: 700;
      font-size: 17px;
      flex-shrink: 0;
    }

    .post-body {
      flex: 1;
      min-width: 0;
    }

    .post-top {
      display: flex;
      align-items: flex-start;
      justify-content: space-between;
      gap: 16px;
    }

    .post-title {
      font-size: 16px;
      font-weight: 600;
      color: var(--text);
      line-height: 1.5;
      margin-bottom: 6px;
      transition: color .25s ease-out;
    }

    .post-item:hover .post-title {
      color: var(--brand);
    }

    .post-hot {
      font-size: 13px;
      color: var(--amber-dark);
      font-weight: 600;
      white-space: nowrap;
      display: flex;
      align-items: center;
      gap: 4px;
    }

    .post-excerpt {
      font-size: 14px;
      color: var(--text-sub);
      line-height: 1.65;
      margin-bottom: 10px;
      display: -webkit-box;
      -webkit-line-clamp: 2;
      -webkit-box-orient: vertical;
      overflow: hidden;
    }

    .post-meta {
      display: flex;
      align-items: center;
      gap: 8px;
      flex-wrap: wrap;
    }

    .post-meta .badge {
      font-size: 11px;
      padding: 3px 10px;
    }

    .post-time {
      margin-left: auto;
      font-size: 13px;
      color: var(--text-sub);
      display: inline-flex;
      align-items: center;
      gap: 6px;
      white-space: nowrap;
    }

    /* ===== Sidebar ===== */
    .sidebar {
      display: flex;
      flex-direction: column;
      gap: 24px;
      position: sticky;
      top: 88px;
    }

    .sidebar-card {
      background: #fff;
      border: 1px solid var(--border);
      border-radius: var(--radius-md);
      padding: 24px;
      box-shadow: var(--shadow-card);
    }

    .sidebar-card h3 {
      font-size: 17px;
      font-weight: 700;
      color: var(--text);
      margin-bottom: 18px;
      display: flex;
      align-items: center;
      gap: 8px;
    }

    .sidebar-card h3 i {
      color: var(--amber);
    }

    .rank-list {
      display: flex;
      flex-direction: column;
      gap: 2px;
    }

    .rank-item {
      display: flex;
      align-items: center;
      gap: 12px;
      padding: 8px 6px;
      border-radius: 8px;
      transition: background .2s ease-out;
    }

    .rank-item:hover {
      background: rgba(30, 68, 64, .05);
    }

    .rank-num {
      width: 24px;
      height: 24px;
      border-radius: 6px;
      background: var(--bg-alt);
      color: var(--text-sub);
      font-size: 12px;
      font-weight: 700;
      display: flex;
      align-items: center;
      justify-content: center;
      flex-shrink: 0;
    }

    .rank-item:nth-child(-n+3) .rank-num {
      background: var(--amber);
      color: #fff;
    }

    .rank-name {
      flex: 1;
      font-size: 14px;
      font-weight: 600;
      color: var(--text);
      white-space: nowrap;
      overflow: hidden;
      text-overflow: ellipsis;
    }

    .rank-val {
      font-family: 'DIN Alternate', 'Arial Narrow', sans-serif;
      font-size: 14px;
      font-weight: 700;
      color: var(--brand);
    }

    /* Tag cloud */
    .tag-cloud {
      display: flex;
      flex-wrap: wrap;
      gap: 8px;
    }

    .tag-item {
      display: inline-block;
      padding: 5px 14px;
      border-radius: 999px;
      background: var(--bg-alt);
      border: 1px solid var(--border);
      font-size: 12px;
      color: var(--text-sub);
      transition: all .25s ease-out;
    }

    .tag-item:hover {
      background: rgba(30, 68, 64, .08);
      color: var(--brand);
      border-color: rgba(30, 68, 64, .25);
    }

    /* ===== Rules ===== */
    .rules-section {
      padding: 96px 0;
      background: var(--brand-dark);
      color: #fff;
    }

    .rules-section .section-head h2 {
      color: #fff;
    }

    .rules-section .section-head p {
      color: rgba(255, 255, 255, .62);
    }

    .rules-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 20px;
    }

    .rule-item {
      background: rgba(255, 255, 255, .05);
      border: 1px solid rgba(255, 255, 255, .10);
      border-radius: var(--radius-md);
      padding: 28px 24px;
      transition: background .25s ease-out, border-color .25s ease-out, transform .25s ease-out;
    }

    .rule-item:hover {
      background: rgba(255, 255, 255, .09);
      border-color: rgba(255, 255, 255, .20);
      transform: translateY(-3px);
    }

    .rule-item .rule-icon {
      width: 44px;
      height: 44px;
      border-radius: 12px;
      background: rgba(217, 142, 50, .18);
      color: var(--amber);
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 18px;
      margin-bottom: 16px;
    }

    .rule-item h3 {
      font-size: 16px;
      font-weight: 600;
      margin-bottom: 8px;
    }

    .rule-item p {
      font-size: 13px;
      color: rgba(255, 255, 255, .65);
      line-height: 1.65;
    }

    /* ===== FAQ ===== */
    .faq-section {
      padding: 96px 0;
      background: var(--bg);
    }

    .faq-wrap {
      max-width: 760px;
      margin: 0 auto;
      display: flex;
      flex-direction: column;
      gap: 12px;
    }

    .faq-item {
      background: #fff;
      border: 1px solid var(--border);
      border-radius: var(--radius-md);
      overflow: hidden;
      box-shadow: var(--shadow-card);
      transition: border-color .25s ease-out, box-shadow .25s ease-out;
    }

    .faq-item:hover {
      border-color: rgba(30, 68, 64, .25);
    }

    .faq-item[open] {
      border-color: rgba(30, 68, 64, .35);
      box-shadow: var(--shadow-hover);
    }

    .faq-item summary {
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 16px;
      padding: 18px 22px;
      cursor: pointer;
      font-size: 15px;
      font-weight: 600;
      color: var(--text);
      list-style: none;
      transition: color .25s ease-out;
    }

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

    .faq-item summary:hover {
      color: var(--brand);
    }

    .faq-item summary .faq-icon {
      color: var(--amber);
      font-size: 14px;
      flex-shrink: 0;
      transition: transform .3s ease-out;
    }

    .faq-item[open] summary .faq-icon {
      transform: rotate(45deg);
    }

    .faq-item .faq-answer {
      padding: 0 22px 20px;
      font-size: 14px;
      color: var(--text-sub);
      line-height: 1.75;
    }

    /* ===== CTA ===== */
    .cta-section {
      padding: 96px 0;
      background: var(--bg-alt);
    }

    .cta-inner {
      max-width: 960px;
      margin: 0 auto;
      background: var(--brand-dark);
      border-radius: var(--radius-lg);
      padding: 64px 48px;
      text-align: center;
      position: relative;
      overflow: hidden;
    }

    .cta-inner::before {
      content: '';
      position: absolute;
      inset: 0;
      background-image: url('/assets/images/backpic/back-3.png');
      background-size: cover;
      background-position: center;
      opacity: .22;
    }

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

    .cta-inner h2 {
      font-size: clamp(1.6rem, 2.8vw, 2.2rem);
      font-weight: 700;
      color: #fff;
      margin-bottom: 14px;
    }

    .cta-inner p {
      color: rgba(255, 255, 255, .68);
      font-size: 15px;
      margin-bottom: 28px;
      max-width: 520px;
      margin-left: auto;
      margin-right: auto;
    }

    .cta-inner .btn-amber {
      font-size: 16px;
      padding: 0 36px;
    }

    /* ===== Footer ===== */
    .site-footer {
      background: var(--brand-dark);
      color: rgba(255, 255, 255, .72);
      padding: 64px 0 24px;
    }

    .footer-grid {
      display: grid;
      grid-template-columns: 1.4fr 1fr 1fr 1fr;
      gap: 40px;
      margin-bottom: 48px;
    }

    .footer-logo {
      font-size: 22px;
      font-weight: 800;
      color: #fff;
      margin-bottom: 14px;
      letter-spacing: -.01em;
    }

    .footer-logo span {
      color: var(--amber);
    }

    .footer-brand p {
      font-size: 14px;
      color: rgba(255, 255, 255, .60);
      line-height: 1.75;
      max-width: 280px;
    }

    .footer-col h4 {
      color: #fff;
      font-size: 15px;
      font-weight: 700;
      margin-bottom: 16px;
    }

    .footer-col a {
      display: block;
      color: rgba(255, 255, 255, .60);
      font-size: 14px;
      padding: 4px 0;
      transition: color .25s ease-out, padding-left .25s ease-out;
    }

    .footer-col a:hover {
      color: #fff;
      padding-left: 6px;
    }

    .footer-col p {
      font-size: 14px;
      color: rgba(255, 255, 255, .60);
      margin-bottom: 4px;
    }

    .social-row {
      display: flex;
      gap: 12px;
      margin-bottom: 18px;
    }

    .social-row a {
      width: 38px;
      height: 38px;
      border-radius: 50%;
      background: rgba(255, 255, 255, .08);
      display: flex;
      align-items: center;
      justify-content: center;
      color: rgba(255, 255, 255, .75);
      font-size: 15px;
      padding: 0;
      transition: all .25s ease-out;
    }

    .social-row a:hover {
      background: var(--amber);
      color: #1A2624;
      transform: translateY(-2px);
      padding-left: 0;
    }

    .footer-bottom {
      border-top: 1px solid rgba(255, 255, 255, .10);
      padding-top: 20px;
      text-align: center;
      font-size: 13px;
      color: rgba(255, 255, 255, .45);
    }

    /* ===== Reveal ===== */
    .reveal {
      opacity: 0;
      transform: translateY(18px);
      transition: opacity .6s ease-out, transform .6s ease-out;
    }

    .reveal.is-visible {
      opacity: 1;
      transform: translateY(0);
    }

    /* ===== Responsive ===== */
    @media (max-width: 1024px) {
      .main-nav {
        display: none;
      }

      .nav-toggle {
        display: flex;
      }

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

      .sidebar {
        position: static;
      }

      .stat-grid {
        gap: 20px;
      }

      .section,
      .community-main,
      .rules-section,
      .faq-section,
      .cta-section {
        padding: 64px 0;
      }
    }

    @media (max-width: 768px) {
      .stat-grid {
        grid-template-columns: repeat(2, 1fr);
      }

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

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

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

      .post-item {
        flex-direction: column;
        gap: 12px;
      }

      .post-avatar {
        width: 36px;
        height: 36px;
        font-size: 14px;
      }

      .post-top {
        flex-direction: row;
      }

      .post-time {
        margin-left: 0;
        width: 100%;
      }

      .btn-amber {
        padding: 0 22px;
      }
    }

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

      .section,
      .community-main,
      .rules-section,
      .faq-section,
      .cta-section {
        padding: 48px 0;
      }

      .stat-grid {
        gap: 14px;
      }

      .stat-item .stat-num {
        font-size: 1.8rem;
      }

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

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

      .section-title-row h2 {
        font-size: 20px;
      }

      .post-time {
        font-size: 12px;
      }

      .badge {
        font-size: 11px;
      }

      .cta-inner {
        padding: 40px 20px;
      }

      .navbar-split-line {
        display: none;
      }

      .btn {
        padding: 0 16px;
        font-size: 14px;
      }
    }