/* roulang page: index */
:root{
  --brand:#107F8C;
  --brand-deep:#0B6570;
  --brand-ink:#083F46;
  --brand-soft:rgba(16,127,140,.10);
  --brand-soft-2:rgba(16,127,140,.18);
  --accent:#E8A33D;
  --accent-soft:rgba(232,163,61,.14);
  --bg:#F6F8F9;
  --card:#FFFFFF;
  --ink:#1B2A2E;
  --muted:#5A6B70;
  --line:#E3E9EA;
  --r-card:16px;
  --r-btn:10px;
  --r-img:12px;
  --sh-sm:0 2px 8px rgba(16,32,36,.06);
  --sh-md:0 8px 24px rgba(16,32,36,.08);
  --sh-lg:0 16px 40px rgba(16,32,36,.10);
  --gutter:24px;
  --maxw:1180px;
}
*{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;}
body{
  margin:0;
  font-family:system-ui,-apple-system,"PingFang SC","Microsoft YaHei","Helvetica Neue",Arial,sans-serif;
  font-size:16px;
  line-height:1.8;
  color:var(--ink);
  background:var(--bg);
  font-variant-numeric:tabular-nums;
}
img{max-width:100%;display:block;height:auto;border-radius:var(--r-img);}
a{color:var(--brand);text-decoration:none;transition:color .18s ease,opacity .18s ease;}
a:hover{color:var(--brand-deep);}
p{margin:0 0 16px;}
h1,h2,h3,h4{margin:0 0 12px;color:var(--ink);font-weight:700;line-height:1.3;}
h1{font-size:40px;line-height:1.25;letter-spacing:-.5px;}
h2{font-size:28px;}
h3{font-size:18px;font-weight:600;}
ul,ol{margin:0;padding:0;list-style:none;}
button{font-family:inherit;}
:focus-visible{outline:2px solid var(--accent);outline-offset:2px;border-radius:4px;}
.container{width:100%;max-width:var(--maxw);margin:0 auto;padding:0 var(--gutter);}
.section{padding:88px 0;}
.section--tight{padding:64px 0;}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:36px;flex-wrap:wrap;}
.section-head .eyebrow{display:inline-block;font-size:13px;letter-spacing:1px;color:var(--brand);background:var(--brand-soft);padding:4px 12px;border-radius:999px;margin-bottom:12px;}
.section-head p{max-width:640px;color:var(--muted);font-size:15px;margin:0;}
.link-more{display:inline-flex;align-items:center;gap:6px;font-size:15px;font-weight:600;color:var(--brand);}
.link-more:hover{color:var(--brand-deep);}
.link-more svg{transition:transform .18s ease;}
.link-more:hover svg{transform:translateX(4px);}

/* Header / Nav */
.site-header{
  position:sticky;top:0;z-index:900;
  background:rgba(246,248,249,.92);
  backdrop-filter:blur(8px);
  border-bottom:1px solid var(--line);
}
.nav-shell{
  display:flex;align-items:center;gap:20px;
  margin:14px auto;
  background:var(--card);
  border:1px solid var(--line);
  border-radius:18px;
  box-shadow:var(--sh-md);
  padding:12px 18px;
}
.brand{display:flex;align-items:center;gap:10px;flex-shrink:0;}
.brand-mark{
  width:40px;height:40px;border-radius:12px;
  background:linear-gradient(135deg,var(--brand),var(--brand-deep));
  color:#fff;font-size:13px;font-weight:700;letter-spacing:.5px;
  display:flex;align-items:center;justify-content:center;
  box-shadow:var(--sh-sm);
}
.brand-text{display:flex;flex-direction:column;line-height:1.2;}
.brand-text strong{font-size:16px;color:var(--ink);font-weight:700;}
.brand-text span{font-size:12px;color:var(--muted);letter-spacing:.5px;}
.nav-cards{display:flex;align-items:center;gap:10px;margin-left:auto;flex-wrap:wrap;}
.nav-card{
  display:inline-flex;align-items:center;gap:8px;
  padding:9px 14px;border-radius:12px;
  background:#F2F6F7;border:1px solid transparent;
  color:var(--muted);font-size:14px;font-weight:600;
  transition:all .18s ease;
}
.nav-card svg{width:16px;height:16px;stroke:currentColor;fill:none;stroke-width:1.7;}
.nav-card:hover{background:var(--brand-soft);border-color:var(--brand-soft-2);color:var(--brand);}
.nav-card.is-active{background:var(--brand-soft);border-color:var(--brand-soft-2);color:var(--brand-deep);}
.nav-cta{
  display:inline-flex;align-items:center;justify-content:center;
  padding:11px 20px;border-radius:var(--r-btn);
  background:var(--brand);color:#fff;font-size:15px;font-weight:600;
  box-shadow:var(--sh-md);white-space:nowrap;
  transition:all .18s ease;
}
.nav-cta:hover{background:var(--brand-deep);color:#fff;transform:translateY(-1px);box-shadow:var(--sh-lg);}
.nav-toggle{
  display:none;width:44px;height:44px;border-radius:12px;
  border:1px solid var(--line);background:#F2F6F7;cursor:pointer;
  align-items:center;justify-content:center;flex-shrink:0;
}
.nav-toggle span{display:block;width:18px;height:2px;background:var(--brand-deep);position:relative;}
.nav-toggle span::before,.nav-toggle span::after{
  content:"";position:absolute;left:0;width:18px;height:2px;background:var(--brand-deep);
}
.nav-toggle span::before{top:-6px;}
.nav-toggle span::after{top:6px;}
.mobile-panel{display:none;padding:0 var(--gutter) 16px;}
.mobile-panel.is-open{display:block;}
.mobile-panel a{
  display:flex;align-items:center;justify-content:space-between;gap:12px;
  padding:14px 16px;margin-bottom:8px;border-radius:12px;
  background:var(--card);border:1px solid var(--line);
  color:var(--ink);font-size:15px;font-weight:600;box-shadow:var(--sh-sm);
}
.mobile-panel a.is-active{border-color:var(--brand-soft-2);background:var(--brand-soft);color:var(--brand-deep);}
.mobile-panel a svg{width:16px;height:16px;stroke:var(--muted);fill:none;stroke-width:1.7;}

/* Buttons */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:13px 26px;border-radius:var(--r-btn);
  font-size:15px;font-weight:600;line-height:1;
  border:1.5px solid transparent;cursor:pointer;
  transition:all .18s ease;
}
.btn-primary{background:var(--brand);color:#fff;box-shadow:var(--sh-md);}
.btn-primary:hover{background:var(--brand-deep);color:#fff;transform:translateY(-1px);box-shadow:var(--sh-lg);}
.btn-ghost{background:#fff;color:var(--brand);border-color:var(--brand);}
.btn-ghost:hover{background:var(--brand-soft);color:var(--brand-deep);transform:translateY(-1px);}
.btn-amber{background:var(--accent);color:#3A2506;box-shadow:var(--sh-md);}
.btn-amber:hover{background:#D8912A;color:#3A2506;transform:translateY(-1px);}
.btn:active{transform:translateY(0);}

/* Hero */
.hero{
  background:linear-gradient(135deg,rgba(16,127,140,.96),rgba(16,127,140,.80));
  padding:72px 0 88px;
  position:relative;overflow:hidden;
}
.hero::after{
  content:"";position:absolute;right:-120px;top:-120px;width:420px;height:420px;
  border-radius:50%;background:rgba(255,255,255,.06);
}
.hero-grid{display:grid;grid-template-columns:1.05fr .95fr;gap:56px;align-items:center;position:relative;z-index:1;}
.hero-tag{
  display:inline-flex;align-items:center;gap:8px;
  background:rgba(255,255,255,.16);color:#fff;
  padding:6px 14px;border-radius:999px;font-size:13px;letter-spacing:.5px;
  border:1px solid rgba(255,255,255,.24);margin-bottom:20px;
}
.hero h1{color:#fff;font-size:42px;line-height:1.24;margin-bottom:18px;}
.hero-sub{color:rgba(255,255,255,.90);font-size:17px;margin-bottom:30px;max-width:520px;}
.hero-actions{display:flex;gap:14px;flex-wrap:wrap;margin-bottom:32px;}
.hero-actions .btn-ghost{background:rgba(255,255,255,.10);color:#fff;border-color:rgba(255,255,255,.55);}
.hero-actions .btn-ghost:hover{background:rgba(255,255,255,.20);color:#fff;}
.hero-badges{display:flex;gap:10px;flex-wrap:wrap;}
.hero-badges li{
  background:rgba(255,255,255,.13);border:1px solid rgba(255,255,255,.22);
  color:rgba(255,255,255,.94);font-size:13px;padding:6px 14px;border-radius:999px;
}
.hero-visual{position:relative;}
.hero-visual::before{
  content:"";position:absolute;inset:24px -18px -18px 24px;
  background:rgba(255,255,255,.14);border-radius:20px;
}
.hero-photo{
  position:relative;background:#fff;padding:10px;border-radius:20px;
  box-shadow:0 24px 60px rgba(4,40,46,.28);
}
.hero-photo img{width:100%;aspect-ratio:4/3;object-fit:cover;border-radius:14px;border:1px solid var(--line);}
.hero-photo .photo-badge{
  position:absolute;left:26px;bottom:26px;
  background:rgba(255,255,255,.95);border-radius:12px;padding:10px 16px;
  box-shadow:var(--sh-md);font-size:13px;font-weight:600;color:var(--brand-deep);
}

/* Feature cards */
.grid-3{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;}
.grid-4{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;}
.grid-2{display:grid;grid-template-columns:repeat(2,1fr);gap:24px;}
.feature-card{
  background:var(--card);border:1px solid var(--line);border-radius:var(--r-card);
  padding:28px;box-shadow:var(--sh-md);transition:all .2s ease;display:flex;flex-direction:column;
}
.feature-card:hover{transform:translateY(-2px);box-shadow:var(--sh-lg);border-color:rgba(16,127,140,.30);}
.icon-pill{
  width:48px;height:48px;border-radius:50%;
  background:var(--brand-soft);display:flex;align-items:center;justify-content:center;margin-bottom:18px;
}
.icon-pill svg{width:22px;height:22px;stroke:var(--brand);fill:none;stroke-width:1.8;}
.feature-card h3{margin-bottom:10px;}
.feature-card p{font-size:15px;color:var(--muted);margin-bottom:18px;}
.card-divider{height:1px;background:var(--line);margin:0 0 16px;}
.card-metric{font-size:14px;color:var(--brand-deep);font-weight:600;display:flex;align-items:center;gap:8px;}
.card-metric i{width:6px;height:6px;border-radius:50%;background:var(--accent);display:inline-block;}

/* Steps / scene */
.scene-grid{display:grid;grid-template-columns:1fr 1fr;gap:56px;align-items:center;}
.scene-media{position:relative;background:#fff;padding:12px;border-radius:18px;box-shadow:var(--sh-lg);border:1px solid var(--line);}
.scene-media img{width:100%;aspect-ratio:4/3;object-fit:cover;border-radius:12px;}
.scene-media .corner-tag{
  position:absolute;top:-14px;left:24px;background:var(--accent);color:#3A2506;
  font-size:13px;font-weight:700;padding:6px 14px;border-radius:999px;box-shadow:var(--sh-sm);
}
.step-list{border-top:1px solid var(--line);}
.step-list li{display:flex;gap:20px;padding:20px 0;border-bottom:1px solid var(--line);transition:background .18s ease;}
.step-list li:hover{background:rgba(16,127,140,.04);}
.step-num{font-size:26px;font-weight:300;color:var(--brand);line-height:1;min-width:38px;}
.step-body h3{margin-bottom:6px;font-size:17px;}
.step-body p{margin:0;font-size:14px;color:var(--muted);}

/* Category cards */
.cat-card{
  background:var(--card);border:1px solid var(--line);border-radius:var(--r-card);
  overflow:hidden;box-shadow:var(--sh-sm);transition:all .2s ease;display:flex;flex-direction:column;
}
.cat-card:hover{transform:translateY(-2px);box-shadow:var(--sh-lg);border-color:rgba(16,127,140,.30);}
.cat-thumb{position:relative;aspect-ratio:16/10;overflow:hidden;background:#EDF3F4;}
.cat-thumb img{width:100%;height:100%;object-fit:cover;border-radius:0;}
.cat-thumb .tag{
  position:absolute;left:14px;top:14px;background:rgba(255,255,255,.94);
  color:var(--brand-deep);font-size:12px;font-weight:700;padding:5px 12px;border-radius:999px;
}
.cat-body{padding:24px;display:flex;flex-direction:column;gap:10px;flex:1;}
.cat-body h3{font-size:18px;margin:0;}
.cat-body p{font-size:14px;color:var(--muted);margin:0;flex:1;}
.cat-link{display:inline-flex;align-items:center;gap:6px;font-size:14px;font-weight:600;color:var(--brand);}
.cat-card:hover .cat-link{color:var(--brand-deep);}
.cat-card:hover .cat-link svg{transform:translateX(4px);}
.cat-link svg{transition:transform .18s ease;}

/* Stats */
.stat-card{
  background:#FBFCFC;border:1px solid var(--line);border-radius:var(--r-card);
  padding:26px 24px;
}
.stat-card strong{display:block;font-size:34px;font-weight:700;color:var(--brand);line-height:1.1;margin-bottom:10px;}
.stat-card span{display:block;font-size:14px;color:var(--muted);}
.quotes{display:flex;gap:16px;margin-top:28px;overflow:hidden;flex-wrap:wrap;}
.quote{
  flex:1 1 240px;background:var(--card);border:1px solid var(--line);border-radius:14px;
  padding:18px 20px;font-size:14px;color:var(--muted);box-shadow:var(--sh-sm);
}
.quote em{display:block;font-style:normal;margin-top:8px;font-size:13px;color:var(--brand-deep);font-weight:600;}

/* CMS post cards */
.post-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;}
.post-card{
  background:var(--card);border:1px solid var(--line);border-radius:var(--r-card);
  overflow:hidden;box-shadow:var(--sh-sm);transition:all .2s ease;display:flex;flex-direction:column;
}
.post-card:hover{transform:translateY(-2px);box-shadow:var(--sh-lg);border-color:rgba(16,127,140,.30);}
.post-thumb{aspect-ratio:16/9;overflow:hidden;background:#EDF3F4;}
.post-thumb img{width:100%;height:100%;object-fit:cover;border-radius:0;}
.post-body{padding:22px;display:flex;flex-direction:column;gap:10px;flex:1;}
.tag{
  display:inline-block;align-self:flex-start;
  background:var(--brand-soft);color:var(--brand-deep);
  font-size:13px;padding:4px 12px;border-radius:999px;font-weight:600;
}
.tag--amber{background:var(--accent-soft);color:#8A5A0C;}
.post-body h3{font-size:17px;margin:0;line-height:1.45;}
.post-body h3 a{color:var(--ink);}
.post-body h3 a:hover{color:var(--brand);}
.post-body p{font-size:14px;color:var(--muted);margin:0;flex:1;}
.post-foot{display:flex;align-items:center;justify-content:space-between;font-size:13px;color:var(--muted);border-top:1px solid var(--line);padding-top:12px;}
.post-foot a{font-weight:600;}
.empty-state{
  background:var(--card);border:1px dashed var(--line);border-radius:var(--r-card);
  min-height:220px;display:flex;flex-direction:column;align-items:center;justify-content:center;
  gap:10px;padding:40px;text-align:center;color:var(--muted);box-shadow:var(--sh-sm);
}
.empty-state svg{width:64px;height:64px;stroke:#B7C4C7;fill:none;stroke-width:1.4;}
.empty-state strong{font-size:16px;color:var(--ink);}
.empty-state span{font-size:13px;}

/* FAQ */
.faq-card{background:var(--card);border:1px solid var(--line);border-radius:var(--r-card);box-shadow:var(--sh-md);overflow:hidden;}
.faq-item{border-bottom:1px solid var(--line);position:relative;}
.faq-item:last-child{border-bottom:0;}
.faq-item::before{
  content:"";position:absolute;left:0;top:0;bottom:0;width:3px;background:var(--brand);
  opacity:0;transition:opacity .18s ease;
}
.faq-item[open]::before{opacity:1;}
.faq-item summary{
  list-style:none;cursor:pointer;padding:22px 56px 22px 28px;position:relative;
  font-size:16px;font-weight:600;color:var(--ink);transition:background .18s ease;
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary::after{
  content:"+";position:absolute;right:26px;top:50%;transform:translateY(-50%);
  font-size:22px;font-weight:400;color:var(--brand);line-height:1;
}
.faq-item[open] summary::after{content:"−";}
.faq-item summary:hover{background:rgba(16,127,140,.04);}
.faq-body{padding:0 28px 24px 28px;color:var(--muted);font-size:15px;}
.faq-body p{margin:0;}

/* CTA band */
.cta-card{
  background:linear-gradient(135deg,rgba(16,127,140,.12),rgba(232,163,61,.10));
  border:1px solid var(--brand-soft-2);border-radius:20px;
  padding:52px 44px;display:flex;align-items:center;justify-content:space-between;gap:32px;flex-wrap:wrap;
}
.cta-card h2{margin-bottom:8px;}
.cta-card p{color:var(--muted);margin:0;max-width:560px;font-size:15px;}

/* Footer */
.site-footer{
  background:#12262B;color:#C9D6D8;margin-top:0;
  padding:64px 0 0;
  border-top:1px solid rgba(16,127,140,.20);
}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:40px;padding-bottom:44px;}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:16px;}
.footer-brand .brand-mark{background:linear-gradient(135deg,#128C9A,#0B6570);}
.footer-brand strong{color:#fff;font-size:16px;}
.site-footer p{font-size:13px;color:#93A8AC;line-height:1.9;margin:0;}
.footer-col h4{font-size:14px;color:#6FBEC9;margin-bottom:16px;font-weight:600;}
.footer-col li{margin-bottom:10px;}
.footer-col a{font-size:13px;color:#9FB2B6;}
.footer-col a:hover{color:#fff;}
.footer-bottom{
  border-top:1px solid rgba(16,127,140,.20);
  padding:20px 0 28px;display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:13px;color:#8299 9D;
}
.footer-bottom span{color:#82999D;}

/* Sticky bar */
.sticky-bar{
  position:fixed;left:50%;bottom:24px;transform:translate(-50%,140%);
  z-index:950;background:#fff;border:1px solid var(--line);border-radius:16px;
  box-shadow:0 18px 44px rgba(8,40,46,.18);
  display:flex;align-items:center;gap:24px;padding:14px 16px 14px 24px;
  transition:transform .28s ease;max-width:calc(100% - 48px);
}
.sticky-bar.is-visible{transform:translate(-50%,0);}
.sticky-bar p{margin:0;font-size:14px;color:var(--ink);font-weight:600;}
.sticky-bar .btn{padding:11px 22px;}

/* Responsive */
@media (max-width:1023px){
  h1{font-size:34px;}
  .hero h1{font-size:34px;}
  .hero-grid{grid-template-columns:1fr;gap:40px;}
  .scene-grid{grid-template-columns:1fr;gap:36px;}
  .grid-3,.post-grid{grid-template-columns:repeat(2,1fr);}
  .grid-4{grid-template-columns:repeat(2,1fr);}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
  .section{padding:64px 0;}
  .nav-cards{display:none;}
  .nav-toggle{display:flex;}
  .nav-shell{margin:12px auto;}
  .nav-cta{margin-left:auto;}
}
@media (max-width:767px){
  h1{font-size:28px;}
  h2{font-size:22px;}
  .hero{padding:48px 0 56px;}
  .hero h1{font-size:28px;}
  .hero-sub{font-size:15px;}
  .section{padding:56px 0;}
  .section--tight{padding:44px 0;}
  .grid-3,.grid-2,.grid-4,.post-grid{grid-template-columns:1fr;}
  .cta-card{padding:32px 24px;}
  .brand-text span{display:none;}
  .nav-cta{padding:10px 16px;font-size:14px;}
  .sticky-bar{
    left:0;right:0;bottom:0;transform:translate(0,140%);
    max-width:none;border-radius:16px 16px 0 0;gap:14px;padding:12px 16px calc(12px + env(safe-area-inset-bottom));
  }
  .sticky-bar.is-visible{transform:translate(0,0);}
  .sticky-bar p{font-size:13px;}
}
@media (max-width:520px){
  .container{padding:0 16px;}
  .hero-actions{flex-direction:column;align-items:stretch;}
  .hero-actions .btn{width:100%;}
  .footer-grid{grid-template-columns:1fr;}
  .feature-card{padding:22px;}
  .faq-item summary{padding:18px 48px 18px 20px;font-size:15px;}
  .faq-body{padding:0 20px 20px 20px;}
}
@media (prefers-reduced-motion:reduce){
  *{transition:none !important;animation:none !important;}
}

/* roulang page: category1 */
:root{
  --brand:#107F8C;
  --brand-dark:#0B6672;
  --brand-deep:#12262B;
  --brand-tint:rgba(16,127,140,.10);
  --brand-tint-2:rgba(16,127,140,.06);
  --accent:#E8A33D;
  --accent-tint:rgba(232,163,61,.14);
  --bg:#F6F8F9;
  --card:#FFFFFF;
  --ink:#1B2A2E;
  --ink-2:#5A6B70;
  --line:#E3E9EA;
  --radius-card:16px;
  --radius-btn:10px;
  --radius-img:12px;
  --radius-pill:999px;
  --shadow-sm:0 2px 8px rgba(16,32,36,.06);
  --shadow-md:0 8px 24px rgba(16,32,36,.08);
  --shadow-lg:0 16px 40px rgba(16,32,36,.10);
  --space:8px;
  --max:1180px;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;}
body{
  margin:0;
  font-family:system-ui,-apple-system,"PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;
  font-size:16px;
  line-height:1.8;
  color:var(--ink);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;}
a{color:var(--brand);text-decoration:none;transition:color .18s ease,background-color .18s ease;}
a:hover{color:var(--brand-dark);}
button{font-family:inherit;}
h1,h2,h3,h4{margin:0;color:var(--ink);letter-spacing:-.2px;}
h1{font-size:40px;line-height:1.25;font-weight:700;letter-spacing:-.5px;}
h2{font-size:28px;line-height:1.35;font-weight:700;}
h3{font-size:18px;line-height:1.5;font-weight:600;}
p{margin:0;}
ul{margin:0;padding:0;list-style:none;}
:focus-visible{outline:2px solid var(--accent);outline-offset:2px;border-radius:6px;}

.container{width:100%;max-width:var(--max);margin:0 auto;padding:0 24px;}
.section{padding:88px 0;}
.section--tight{padding:56px 0;}
.section-head{max-width:720px;margin-bottom:40px;}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;font-weight:600;letter-spacing:.4px;
  color:var(--brand);background:var(--brand-tint);
  padding:6px 14px;border-radius:var(--radius-pill);margin-bottom:16px;
}
.section-head h2{margin-bottom:10px;}
.section-head p{color:var(--ink-2);font-size:15px;}

/* ---------- Header / Nav ---------- */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(246,248,249,.94);
  backdrop-filter:blur(10px);
  border-bottom:1px solid var(--line);
}
.nav-wrap{display:flex;align-items:center;gap:20px;padding:12px 0;}
.brand{display:flex;align-items:center;gap:10px;flex-shrink:0;}
.brand-mark{
  width:40px;height:40px;border-radius:12px;
  display:grid;place-items:center;
  background:linear-gradient(135deg,var(--brand),var(--brand-dark));
  color:#fff;font-size:13px;font-weight:700;letter-spacing:.5px;
  box-shadow:var(--shadow-sm);
}
.brand-text{display:flex;flex-direction:column;line-height:1.2;}
.brand-text strong{font-size:16px;font-weight:700;color:var(--ink);letter-spacing:-.2px;}
.brand-text span{font-size:11px;color:var(--ink-2);letter-spacing:.6px;}
.nav-cards{display:flex;align-items:center;gap:10px;margin-left:auto;flex-wrap:nowrap;}
.nav-card{
  display:inline-flex;align-items:center;gap:8px;
  padding:10px 14px;border-radius:12px;
  background:var(--card);border:1px solid var(--line);
  color:var(--ink-2);font-size:14px;font-weight:500;white-space:nowrap;
  box-shadow:var(--shadow-sm);
  transition:background-color .18s ease,color .18s ease,border-color .18s ease,transform .18s ease,box-shadow .18s ease;
}
.nav-card svg{width:18px;height:18px;fill:none;stroke:currentColor;stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round;flex-shrink:0;}
.nav-card:hover,.nav-card:focus-visible{
  background:var(--brand-tint);border-color:rgba(16,127,140,.35);
  color:var(--brand);transform:translateY(-1px);box-shadow:var(--shadow-md);
}
.nav-card.is-active{
  background:var(--brand);border-color:var(--brand);color:#fff;
  box-shadow:0 6px 18px rgba(16,127,140,.28);
}
.nav-card.is-active:hover{color:#fff;background:var(--brand-dark);}
.nav-cta{
  display:inline-flex;align-items:center;gap:8px;
  padding:11px 18px;border-radius:var(--radius-btn);
  background:var(--brand);color:#fff;font-size:15px;font-weight:600;
  box-shadow:var(--shadow-md);flex-shrink:0;
  transition:background-color .18s ease,transform .18s ease,box-shadow .18s ease;
}
.nav-cta:hover{background:var(--brand-dark);color:#fff;transform:translateY(-1px);box-shadow:var(--shadow-lg);}
.nav-toggle{
  display:none;width:44px;height:44px;border-radius:12px;
  background:var(--card);border:1px solid var(--line);
  align-items:center;justify-content:center;cursor:pointer;margin-left:auto;
  color:var(--ink);box-shadow:var(--shadow-sm);
}
.nav-toggle i{font-size:18px;}

/* ---------- Buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:13px 26px;border-radius:var(--radius-btn);
  font-size:15px;font-weight:600;border:1.5px solid transparent;cursor:pointer;
  transition:background-color .18s ease,color .18s ease,transform .18s ease,box-shadow .18s ease,border-color .18s ease;
}
.btn-primary{background:var(--brand);color:#fff;box-shadow:var(--shadow-md);}
.btn-primary:hover{background:var(--brand-dark);color:#fff;transform:translateY(-1px);box-shadow:var(--shadow-lg);}
.btn-ghost{background:#fff;color:var(--brand);border-color:var(--brand);box-shadow:var(--shadow-sm);}
.btn-ghost:hover{background:var(--brand-tint);color:var(--brand-dark);transform:translateY(-1px);}
.btn-accent{background:var(--accent);color:#20160A;box-shadow:var(--shadow-md);}
.btn-accent:hover{filter:brightness(.95);transform:translateY(-1px);}
.link-arrow{display:inline-flex;align-items:center;gap:6px;font-weight:600;font-size:15px;color:var(--brand);}
.link-arrow i{transition:transform .18s ease;}
.link-arrow:hover i{transform:translateX(4px);}
.link-arrow:hover{text-decoration:underline;text-decoration-thickness:2px;text-underline-offset:4px;}

/* ---------- Hero ---------- */
.page-hero{
  position:relative;overflow:hidden;
  background:linear-gradient(135deg,var(--brand) 0%,var(--brand-dark) 100%);
  color:#fff;
  padding:72px 0 80px;
}
.page-hero::after{
  content:"";position:absolute;inset:0;
  background-image:radial-gradient(rgba(255,255,255,.14) 1px,transparent 1px);
  background-size:22px 22px;opacity:.5;pointer-events:none;
}
.page-hero .container{position:relative;z-index:2;}
.crumbs{display:flex;align-items:center;gap:8px;font-size:13px;color:rgba(255,255,255,.78);margin-bottom:20px;flex-wrap:wrap;}
.crumbs a{color:rgba(255,255,255,.9);}
.crumbs a:hover{color:#fff;text-decoration:underline;text-underline-offset:3px;}
.crumbs .sep{color:var(--accent);font-weight:700;}
.page-hero h1{color:#fff;max-width:820px;}
.page-hero .lead{
  margin-top:16px;max-width:640px;
  font-size:16px;line-height:1.8;color:rgba(255,255,255,.88);
}
.hero-badges{display:flex;flex-wrap:wrap;gap:10px;margin-top:28px;}
.badge-pill{
  display:inline-flex;align-items:center;gap:7px;
  padding:7px 15px;border-radius:var(--radius-pill);
  background:rgba(255,255,255,.14);
  border:1px solid rgba(255,255,255,.26);
  font-size:13px;color:#fff;
}
.badge-pill i{color:var(--accent);font-size:12px;}

/* ---------- Intro card ---------- */
.intro-card{
  display:grid;grid-template-columns:1.05fr .95fr;gap:0;
  background:var(--card);border:1px solid var(--line);
  border-radius:var(--radius-card);box-shadow:var(--shadow-md);
  overflow:hidden;margin-top:-52px;position:relative;z-index:5;
}
.intro-body{padding:44px;}
.intro-body h2{font-size:26px;margin-bottom:14px;}
.intro-body p{color:var(--ink-2);font-size:15px;margin-bottom:14px;}
.intro-body p:last-of-type{margin-bottom:24px;}
.intro-media{position:relative;min-height:320px;background:var(--brand-tint-2);}
.intro-media img{width:100%;height:100%;object-fit:cover;border-radius:0;}
.intro-media .tag-float{
  position:absolute;left:20px;bottom:20px;
  background:rgba(255,255,255,.95);border:1px solid var(--line);
  border-radius:12px;padding:10px 16px;font-size:13px;font-weight:600;color:var(--brand);
  box-shadow:var(--shadow-md);
}
.intro-list{display:flex;flex-direction:column;gap:0;}
.intro-list li{
  display:flex;align-items:flex-start;gap:10px;
  padding:10px 0;border-bottom:1px dashed var(--line);
  font-size:14px;color:var(--ink-2);
}
.intro-list li:last-child{border-bottom:0;}
.intro-list li i{color:var(--brand);margin-top:5px;font-size:13px;}

/* ---------- Point cards (双列) ---------- */
.point-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:20px;}
.point-card{
  display:flex;gap:18px;
  background:var(--card);border:1px solid var(--line);border-radius:var(--radius-card);
  padding:26px;box-shadow:var(--shadow-sm);
  transition:border-color .18s ease,box-shadow .18s ease,transform .18s ease;
}
.point-card:hover{
  border-color:rgba(16,127,140,.35);
  box-shadow:var(--shadow-lg);transform:translateY(-2px);
}
.point-icon{
  width:46px;height:46px;border-radius:14px;flex-shrink:0;
  display:grid;place-items:center;
  background:var(--brand-tint);color:var(--brand);font-size:18px;
}
.point-card:nth-child(even) .point-icon{background:var(--accent-tint);color:#B4761F;}
.point-card h3{margin-bottom:8px;}
.point-card p{font-size:14px;color:var(--ink-2);}
.point-card .point-note{
  display:inline-block;margin-top:12px;font-size:12px;font-weight:600;
  color:var(--brand);background:var(--brand-tint);
  padding:4px 10px;border-radius:var(--radius-pill);
}

/* ---------- Steps ---------- */
.steps-panel{
  background:var(--card);border:1px solid var(--line);border-radius:var(--radius-card);
  padding:40px;box-shadow:var(--shadow-sm);
}
.steps{display:grid;grid-template-columns:repeat(4,1fr);gap:18px;margin-top:8px;}
.step-item{position:relative;padding:22px 20px;border-radius:14px;background:var(--brand-tint-2);border:1px solid var(--line);}
.step-item .num{
  font-size:30px;font-weight:700;color:var(--brand);opacity:.5;
  line-height:1;font-variant-numeric:tabular-nums;margin-bottom:12px;display:block;
}
.step-item h3{font-size:16px;margin-bottom:6px;}
.step-item p{font-size:13px;color:var(--ink-2);}

/* ---------- Stats ---------- */
.stat-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;}
.stat-card{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius-card);
  padding:28px 24px;text-align:left;
  transition:border-color .18s ease,box-shadow .18s ease;
}
.stat-card:hover{border-color:rgba(16,127,140,.3);box-shadow:var(--shadow-md);}
.stat-card .stat-num{
  font-size:34px;font-weight:700;color:var(--brand);line-height:1.1;
  font-variant-numeric:tabular-nums;letter-spacing:-.5px;margin-bottom:10px;
}
.stat-card .stat-num em{font-style:normal;font-size:16px;color:var(--ink-2);font-weight:600;margin-left:4px;}
.stat-card p{font-size:13px;color:var(--ink-2);}

/* ---------- Notice bar ---------- */
.notice-bar{
  display:flex;align-items:center;gap:16px;
  background:var(--brand-tint);border:1px solid rgba(16,127,140,.25);
  border-radius:14px;padding:18px 24px;margin-top:36px;
}
.notice-bar i{color:var(--brand);font-size:20px;flex-shrink:0;}
.notice-bar p{font-size:14px;color:var(--ink-2);}
.notice-bar strong{color:var(--brand);}

/* ---------- FAQ ---------- */
.faq-card{background:var(--card);border:1px solid var(--line);border-radius:var(--radius-card);box-shadow:var(--shadow-sm);overflow:hidden;}
.faq-item{border-bottom:1px solid var(--line);}
.faq-item:last-child{border-bottom:0;}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:16px;
  background:none;border:0;padding:22px 26px;text-align:left;cursor:pointer;
  font-size:16px;font-weight:600;color:var(--ink);position:relative;
  transition:background-color .18s ease,color .18s ease;
}
.faq-q:hover{background:var(--brand-tint-2);color:var(--brand);}
.faq-q .ico{
  width:26px;height:26px;border-radius:8px;flex-shrink:0;
  display:grid;place-items:center;background:var(--brand-tint);color:var(--brand);
  font-size:13px;transition:transform .18s ease;
}
.faq-item.is-open .faq-q{color:var(--brand);}
.faq-item.is-open .faq-q .ico{transform:rotate(180deg);background:var(--brand);color:#fff;}
.faq-item.is-open .faq-q::before{
  content:"";position:absolute;left:0;top:14px;bottom:14px;width:3px;
  background:var(--brand);border-radius:0 3px 3px 0;
}
.faq-a{max-height:0;overflow:hidden;transition:max-height .28s ease;}
.faq-a-inner{padding:0 26px 24px 26px;font-size:14px;color:var(--ink-2);}
.faq-item.is-open .faq-a{max-height:420px;}

/* ---------- CTA ---------- */
.cta-card{
  background:linear-gradient(135deg,var(--brand-tint) 0%,rgba(232,163,61,.12) 100%);
  border:1px solid rgba(16,127,140,.22);
  border-radius:20px;padding:48px;text-align:center;
}
.cta-card h2{margin-bottom:12px;}
.cta-card p{color:var(--ink-2);font-size:15px;max-width:600px;margin:0 auto 28px;}
.cta-actions{display:flex;gap:14px;justify-content:center;flex-wrap:wrap;}

/* ---------- Footer ---------- */
.site-footer{background:var(--brand-deep);color:#C7D6D8;padding:64px 0 0;border-top:1px solid rgba(16,127,140,.2);}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:40px;padding-bottom:44px;}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:16px;}
.footer-brand .brand-mark{width:36px;height:36px;font-size:12px;}
.footer-brand strong{color:#fff;font-size:16px;}
.footer-col p{font-size:13px;line-height:1.85;color:#9FB3B6;}
.footer-col h4{font-size:14px;color:#7ED6DF;margin-bottom:16px;font-weight:600;letter-spacing:.3px;}
.footer-col ul li{margin-bottom:10px;}
.footer-col ul li a{font-size:13px;color:#9FB3B6;transition:color .18s ease,padding-left .18s ease;}
.footer-col ul li a:hover{color:#fff;padding-left:4px;}
.footer-bottom{
  border-top:1px solid rgba(16,127,140,.28);
  padding:20px 0 28px;display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:12.5px;color:#7F9699;
}

/* ---------- Responsive ---------- */
@media (max-width:1023px){
  h1{font-size:32px;}
  h2{font-size:24px;}
  .section{padding:64px 0;}
  .nav-card{padding:9px 12px;font-size:13px;}
  .nav-card svg{width:16px;height:16px;}
  .brand-text span{display:none;}
  .intro-card{grid-template-columns:1fr;}
  .intro-media{min-height:240px;order:-1;}
  .point-grid{grid-template-columns:1fr;}
  .steps{grid-template-columns:repeat(2,1fr);}
  .stat-grid{grid-template-columns:repeat(2,1fr);}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
}
@media (max-width:767px){
  h1{font-size:28px;}
  h2{font-size:22px;}
  .section{padding:52px 0;}
  .container{padding:0 18px;}
  .nav-toggle{display:flex;}
  .nav-cta{display:none;}
  .nav-cards{
    position:absolute;left:0;right:0;top:100%;
    flex-direction:column;align-items:stretch;gap:8px;
    background:var(--bg);border-bottom:1px solid var(--line);
    padding:14px 18px 20px;box-shadow:var(--shadow-lg);
    display:none;
  }
  body.nav-open .nav-cards{display:flex;}
  .nav-card{justify-content:space-between;padding:14px 16px;font-size:14px;}
  .nav-card svg{width:18px;height:18px;order:2;}
  .page-hero{padding:48px 0 64px;}
  .intro-card{margin-top:-40px;}
  .intro-body{padding:26px 22px;}
  .steps-panel{padding:26px 20px;}
  .steps{grid-template-columns:1fr;}
  .point-card{padding:20px;}
  .stat-grid{grid-template-columns:1fr 1fr;gap:14px;}
  .stat-card{padding:20px 18px;}
  .stat-card .stat-num{font-size:26px;}
  .notice-bar{flex-direction:flex-start;align-items:flex-start;padding:16px 18px;}
  .faq-q{padding:18px;font-size:15px;}
  .faq-a-inner{padding:0 18px 20px;}
  .cta-card{padding:32px 22px;}
  .cta-actions .btn{width:100%;}
  .footer-grid{grid-template-columns:1fr;gap:28px;}
  .footer-bottom{flex-direction:column;gap:8px;}
}
@media (max-width:519px){
  .stat-grid{grid-template-columns:1fr;}
  .hero-badges{gap:8px;}
  .badge-pill{font-size:12px;padding:6px 12px;}
}

/* roulang page: article */
:root{
  --primary:#107F8C;
  --primary-dark:#0C6673;
  --primary-soft:rgba(16,127,140,.10);
  --primary-line:rgba(16,127,140,.24);
  --amber:#E8A33D;
  --amber-soft:rgba(232,163,61,.14);
  --bg:#F6F8F9;
  --card:#FFFFFF;
  --text:#1B2A2E;
  --muted:#5A6B70;
  --line:#E3E9EA;
  --deep:#12262B;
  --radius-lg:20px;
  --radius:16px;
  --radius-sm:10px;
  --radius-xs:12px;
  --shadow-sm:0 2px 8px rgba(16,32,36,.06);
  --shadow-md:0 8px 24px rgba(16,32,36,.08);
  --shadow-lg:0 16px 40px rgba(16,32,36,.10);
  --space:8px;
  --font:"PingFang SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
}
*{box-sizing:border-box;}
html,body{margin:0;padding:0;}
body{
  font-family:var(--font);
  background:var(--bg);
  color:var(--text);
  font-size:16px;
  line-height:1.8;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;}
a{color:var(--primary);text-decoration:none;transition:color .18s ease;}
a:hover{color:var(--primary-dark);}
button{font-family:inherit;}
h1,h2,h3,h4,p,ul,ol,figure{margin:0;padding:0;}
ul,ol{list-style:none;}
.container{
  width:100%;
  max-width:1180px;
  margin:0 auto;
  padding:0 24px;
}
:focus-visible{
  outline:2px solid var(--amber);
  outline-offset:2px;
  border-radius:6px;
}

/* ---------- header / nav ---------- */
.site-header{
  position:sticky;
  top:0;
  z-index:120;
  padding:12px 0;
  background:rgba(246,248,249,.94);
  backdrop-filter:blur(10px);
  border-bottom:1px solid var(--line);
}
.header-inner{
  position:relative;
  display:flex;
  align-items:center;
  gap:14px;
  background:var(--card);
  border:1px solid var(--line);
  border-radius:18px;
  padding:10px 14px;
  box-shadow:var(--shadow-sm);
}
.brand{
  display:inline-flex;
  align-items:center;
  gap:10px;
  color:var(--text);
  flex:0 0 auto;
}
.brand:hover{color:var(--text);}
.brand-mark{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  width:38px;
  height:38px;
  border-radius:12px;
  background:linear-gradient(135deg,#12909E 0%,#0C6673 100%);
  color:#fff;
  font-size:12px;
  font-weight:700;
  letter-spacing:.5px;
}
.brand-text{
  font-size:15px;
  font-weight:700;
  letter-spacing:.2px;
  white-space:nowrap;
}
.nav-cards{
  display:flex;
  align-items:center;
  gap:8px;
  margin-left:auto;
}
.nav-card{
  display:inline-flex;
  align-items:center;
  gap:7px;
  padding:8px 12px;
  border-radius:12px;
  background:#F2F6F7;
  border:1px solid transparent;
  color:var(--text);
  font-size:13.5px;
  font-weight:500;
  white-space:nowrap;
  transition:background .18s ease,color .18s ease,border-color .18s ease,transform .18s ease;
}
.nav-card svg{
  width:16px;
  height:16px;
  fill:none;
  stroke:currentColor;
  stroke-width:1.8;
  stroke-linecap:round;
  stroke-linejoin:round;
  flex:0 0 auto;
}
.nav-card:hover,
.nav-card:focus-visible{
  background:var(--primary-soft);
  color:var(--primary-dark);
  border-color:var(--primary-line);
  transform:translateY(-1px);
}
.nav-card.is-active{
  background:var(--primary-soft);
  color:var(--primary-dark);
  border-color:var(--primary-line);
}
.header-cta{
  display:flex;
  align-items:center;
  gap:8px;
  flex:0 0 auto;
}
.nav-toggle{
  display:none;
  align-items:center;
  justify-content:center;
  width:40px;
  height:40px;
  border-radius:12px;
  border:1px solid var(--line);
  background:#F2F6F7;
  color:var(--text);
  cursor:pointer;
}
.nav-toggle svg{
  width:18px;height:18px;fill:none;stroke:currentColor;stroke-width:2;stroke-linecap:round;
}

/* ---------- buttons ---------- */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  padding:12px 22px;
  border-radius:var(--radius-sm);
  font-size:15px;
  font-weight:600;
  line-height:1.2;
  border:1.5px solid transparent;
  cursor:pointer;
  transition:background .18s ease,color .18s ease,border-color .18s ease,transform .18s ease,box-shadow .18s ease;
}
.btn-primary{
  background:var(--primary);
  color:#fff;
  box-shadow:var(--shadow-md);
}
.btn-primary:hover{
  background:#0E7280;
  color:#fff;
  transform:translateY(-1px);
  box-shadow:var(--shadow-lg);
}
.btn-outline{
  background:#fff;
  color:var(--primary-dark);
  border-color:var(--primary);
}
.btn-outline:hover{
  background:var(--primary-soft);
  color:var(--primary-dark);
  transform:translateY(-1px);
}
.btn-sm{
  padding:9px 16px;
  font-size:13.5px;
  border-radius:10px;
}

/* ---------- tags / badges ---------- */
.tag{
  display:inline-flex;
  align-items:center;
  gap:6px;
  padding:5px 12px;
  border-radius:999px;
  background:var(--primary-soft);
  color:var(--primary-dark);
  font-size:12.5px;
  font-weight:600;
  letter-spacing:.2px;
}
.tag-amber{
  background:var(--amber-soft);
  color:#8A5B10;
}

/* ---------- breadcrumb ---------- */
.breadcrumb-wrap{
  padding:26px 0 0;
}
.breadcrumb{
  display:flex;
  align-items:center;
  flex-wrap:wrap;
  gap:8px;
  font-size:13px;
  color:var(--muted);
}
.breadcrumb a{color:var(--muted);}
.breadcrumb a:hover{color:var(--primary-dark);}
.breadcrumb .sep{color:var(--primary);opacity:.7;}
.breadcrumb .current{
  color:var(--text);
  max-width:100%;
  overflow:hidden;
  text-overflow:ellipsis;
  white-space:nowrap;
}

/* ---------- article head ---------- */
.article-main{
  padding:22px 0 88px;
}
.article-head{
  max-width:760px;
  margin:0 auto;
  padding:8px 0 22px;
}
.article-head .tag{margin-bottom:16px;}
.article-head h1{
  font-size:34px;
  line-height:1.32;
  font-weight:700;
  letter-spacing:-.5px;
  color:var(--text);
}
.article-meta{
  display:flex;
  align-items:center;
  flex-wrap:wrap;
  gap:10px;
  margin-top:18px;
  font-size:13px;
  color:var(--muted);
}
.article-meta .dot{
  width:1px;
  height:12px;
  background:var(--line);
  display:inline-block;
}
.article-cover{
  max-width:760px;
  margin:0 auto 26px;
  border-radius:var(--radius);
  overflow:hidden;
  border:1px solid var(--line);
  box-shadow:var(--shadow-md);
}
.article-cover img{
  width:100%;
  aspect-ratio:16/9;
  object-fit:cover;
}

/* ---------- article card ---------- */
.article-card{
  max-width:760px;
  margin:0 auto;
  background:var(--card);
  border:1px solid var(--line);
  border-radius:var(--radius);
  box-shadow:var(--shadow-md);
  padding:40px;
}
.article-content{
  font-size:16px;
  line-height:1.85;
  color:var(--text);
  word-break:break-word;
}
.article-content h2{
  position:relative;
  font-size:23px;
  font-weight:700;
  line-height:1.45;
  margin:34px 0 14px;
  padding-left:16px;
}
.article-content h2::before{
  content:"";
  position:absolute;
  left:0;
  top:7px;
  bottom:7px;
  width:4px;
  border-radius:2px;
  background:var(--primary);
}
.article-content h2:first-child{margin-top:0;}
.article-content h3{
  font-size:18px;
  font-weight:600;
  margin:26px 0 10px;
  color:var(--text);
}
.article-content h4{
  font-size:16px;
  font-weight:600;
  margin:20px 0 8px;
  color:var(--primary-dark);
}
.article-content p{margin:0 0 16px;}
.article-content ul,
.article-content ol{
  margin:0 0 18px;
  padding-left:22px;
}
.article-content ul{list-style:disc;}
.article-content ol{list-style:decimal;}
.article-content li{margin-bottom:8px;}
.article-content ul li::marker{color:var(--primary);}
.article-content ol li::marker{color:var(--primary);font-weight:600;}
.article-content blockquote{
  margin:22px 0;
  padding:16px 20px;
  background:var(--primary-soft);
  border-left:4px solid var(--primary);
  border-radius:0 12px 12px 0;
  color:#20464B;
  font-size:15.5px;
}
.article-content blockquote p:last-child{margin-bottom:0;}
.article-content img{
  width:100%;
  height:auto;
  border-radius:12px;
  border:1px solid var(--line);
  margin:16px 0;
}
.article-content figure{margin:20px 0;}
.article-content figcaption{
  font-size:13px;
  color:var(--muted);
  text-align:center;
  margin-top:8px;
}
.article-content a{
  color:var(--primary-dark);
  text-decoration:underline;
  text-underline-offset:3px;
  text-decoration-thickness:1px;
}
.article-content a:hover{color:var(--primary);}
.article-content table{
  width:100%;
  border-collapse:collapse;
  margin:20px 0;
  font-size:14.5px;
  border:1px solid var(--line);
  border-radius:12px;
  overflow:hidden;
}
.article-content th,
.article-content td{
  padding:12px 14px;
  border-bottom:1px solid var(--line);
  text-align:left;
}
.article-content th{
  background:#F2F6F7;
  font-weight:600;
  color:var(--primary-dark);
}
.article-content tr:last-child td{border-bottom:0;}
.article-content hr{
  border:0;
  border-top:1px solid var(--line);
  margin:28px 0;
}

/* ---------- empty state ---------- */
.empty-state{
  display:flex;
  flex-direction:column;
  align-items:center;
  justify-content:center;
  text-align:center;
  min-height:220px;
  padding:36px 20px;
  background:#FBFCFC;
  border:1px dashed var(--line);
  border-radius:var(--radius);
}
.empty-state svg{
  width:64px;height:64px;fill:none;stroke:#9DAFB3;stroke-width:1.4;stroke-linecap:round;stroke-linejoin:round;
  margin-bottom:16px;
}
.empty-state .empty-title{
  font-size:16px;
  font-weight:600;
  color:var(--text);
  margin-bottom:6px;
}
.empty-state .empty-desc{
  font-size:13px;
  color:var(--muted);
  margin-bottom:18px;
}

/* ---------- article footer ---------- */
.article-actions{
  max-width:760px;
  margin:26px auto 0;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:14px;
  flex-wrap:wrap;
}

/* ---------- section base ---------- */
.section{
  padding:64px 0;
}
.section-head{
  max-width:720px;
  margin-bottom:36px;
}
.section-head h2{
  font-size:28px;
  font-weight:700;
  letter-spacing:-.4px;
  line-height:1.4;
}
.section-head p{
  margin-top:10px;
  color:var(--muted);
  font-size:15px;
}
.section-head .tag{margin-bottom:14px;}

/* ---------- related cards ---------- */
.related-grid{
  display:grid;
  grid-template-columns:repeat(3,1fr);
  gap:24px;
}
.related-card{
  display:flex;
  flex-direction:column;
  background:var(--card);
  border:1px solid var(--line);
  border-radius:var(--radius);
  overflow:hidden;
  box-shadow:var(--shadow-sm);
  color:var(--text);
  transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
}
.related-card:hover{
  transform:translateY(-2px);
  box-shadow:var(--shadow-lg);
  border-color:var(--primary-line);
  color:var(--text);
}
.related-card .thumb{
  aspect-ratio:16/9;
  overflow:hidden;
  background:#EEF3F4;
}
.related-card .thumb img{
  width:100%;
  height:100%;
  object-fit:cover;
  transition:transform .3s ease;
}
.related-card:hover .thumb img{transform:scale(1.03);}
.related-card .body{
  padding:20px;
  display:flex;
  flex-direction:column;
  gap:10px;
  flex:1;
}
.related-card h3{
  font-size:16.5px;
  font-weight:600;
  line-height:1.55;
  display:-webkit-box;
  -webkit-line-clamp:2;
  -webkit-box-orient:vertical;
  overflow:hidden;
}
.related-card p{
  font-size:13.5px;
  color:var(--muted);
  line-height:1.7;
  display:-webkit-box;
  -webkit-line-clamp:2;
  -webkit-box-orient:vertical;
  overflow:hidden;
}
.related-card .more{
  margin-top:auto;
  display:inline-flex;
  align-items:center;
  gap:6px;
  font-size:13px;
  font-weight:600;
  color:var(--primary-dark);
}
.related-card .more svg{
  width:14px;height:14px;fill:none;stroke:currentColor;stroke-width:2;stroke-linecap:round;stroke-linejoin:round;
  transition:transform .2s ease;
}
.related-card:hover .more svg{transform:translateX(3px);}

/* ---------- FAQ ---------- */
.faq-list{
  max-width:860px;
  background:var(--card);
  border:1px solid var(--line);
  border-radius:var(--radius);
  box-shadow:var(--shadow-sm);
  overflow:hidden;
}
.faq-item{border-bottom:1px solid var(--line);}
.faq-item:last-child{border-bottom:0;}
.faq-q{
  width:100%;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
  padding:20px 24px;
  background:transparent;
  border:0;
  text-align:left;
  font-size:15.5px;
  font-weight:600;
  color:var(--text);
  cursor:pointer;
  transition:background .18s ease,color .18s ease;
}
.faq-q:hover{background:#F7FAFA;color:var(--primary-dark);}
.faq-icon{
  flex:0 0 auto;
  width:24px;
  height:24px;
  border-radius:8px;
  background:var(--primary-soft);
  color:var(--primary-dark);
  display:inline-flex;
  align-items:center;
  justify-content:center;
  font-size:16px;
  font-weight:600;
  line-height:1;
  transition:background .18s ease;
}
.faq-item.is-open .faq-icon{background:var(--primary);color:#fff;}
.faq-a{
  max-height:0;
  overflow:hidden;
  transition:max-height .22s ease;
}
.faq-item.is-open .faq-a{max-height:420px;}
.faq-a-inner{
  padding:0 24px 20px 24px;
  font-size:14.5px;
  line-height:1.85;
  color:var(--muted);
  border-left:3px solid transparent;
}
.faq-item.is-open .faq-a-inner{border-left-color:var(--primary);}

/* ---------- CTA block ---------- */
.cta-block{
  position:relative;
  border-radius:var(--radius-lg);
  overflow:hidden;
  background-image:linear-gradient(135deg,rgba(12,80,88,.94),rgba(16,127,140,.82)),url("/assets/images/backpic/back-2.png");
  background-size:cover;
  background-position:center;
  padding:52px 44px;
  color:#fff;
  box-shadow:var(--shadow-lg);
}
.cta-block .cta-inner{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:32px;
  flex-wrap:wrap;
}
.cta-block h2{
  font-size:26px;
  font-weight:700;
  line-height:1.4;
  letter-spacing:-.3px;
}
.cta-block p{
  margin-top:10px;
  font-size:14.5px;
  line-height:1.8;
  color:rgba(255,255,255,.85);
  max-width:640px;
}
.cta-block .btn-outline{
  background:rgba(255,255,255,.12);
  border-color:rgba(255,255,255,.7);
  color:#fff;
}
.cta-block .btn-outline:hover{
  background:#fff;
  color:var(--primary-dark);
  border-color:#fff;
}
.cta-block .btn-primary{
  background:#fff;
  color:var(--primary-dark);
  box-shadow:0 10px 26px rgba(0,0,0,.18);
}
.cta-block .btn-primary:hover{
  background:#F1F7F8;
  color:var(--primary-dark);
}
.cta-actions{display:flex;gap:12px;flex-wrap:wrap;}

/* ---------- footer ---------- */
.site-footer{
  background:var(--deep);
  color:#C7D4D7;
  padding:56px 0 26px;
  border-top:3px solid var(--primary);
  margin-top:24px;
}
.footer-grid{
  display:grid;
  grid-template-columns:1.6fr 1fr 1fr 1fr;
  gap:36px;
}
.footer-brand{
  display:flex;
  align-items:center;
  gap:10px;
  margin-bottom:14px;
}
.footer-brand .brand-mark{
  width:34px;height:34px;font-size:11px;border-radius:10px;
}
.footer-brand strong{
  font-size:15.5px;
  color:#fff;
  letter-spacing:.2px;
}
.footer-col p{
  font-size:13px;
  line-height:1.85;
  color:#93A7AB;
}
.footer-col h4{
  font-size:14px;
  font-weight:600;
  color:#7BD3D9;
  margin-bottom:14px;
  letter-spacing:.2px;
}
.footer-col ul{display:flex;flex-direction:column;gap:10px;}
.footer-col ul a{
  font-size:13px;
  color:#A9BCBF;
}
.footer-col ul a:hover{color:#fff;}
.footer-bottom{
  margin-top:40px;
  padding-top:20px;
  border-top:1px solid rgba(16,127,140,.22);
  display:flex;
  justify-content:space-between;
  gap:14px;
  flex-wrap:wrap;
  font-size:12.5px;
  color:#7F9498;
}

/* ---------- responsive ---------- */
@media (max-width:1023px){
  .nav-cards{
    position:absolute;
    top:calc(100% + 10px);
    left:0;
    right:0;
    display:none;
    flex-direction:column;
    align-items:stretch;
    gap:8px;
    background:#fff;
    border:1px solid var(--line);
    border-radius:16px;
    padding:12px;
    box-shadow:var(--shadow-lg);
    margin-left:0;
  }
  .nav-cards.is-open{display:flex;}
  .nav-card{
    width:100%;
    justify-content:flex-start;
    padding:11px 14px;
    font-size:14px;
  }
  .nav-toggle{display:inline-flex;}
  .section{padding:52px 0;}
  .related-grid{grid-template-columns:repeat(2,1fr);gap:20px;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px;}
  .article-head h1{font-size:28px;}
  .article-card{padding:30px;}
}
@media (max-width:767px){
  .container{padding:0 18px;}
  .brand-text{font-size:13.5px;}
  .brand-mark{width:34px;height:34px;border-radius:10px;font-size:11px;}
  .header-inner{gap:10px;padding:9px 11px;}
  .header-cta .btn-sm{padding:8px 12px;font-size:12.5px;}
  .breadcrumb-wrap{padding-top:18px;}
  .article-main{padding:16px 0 64px;}
  .article-head h1{font-size:23px;line-height:1.38;}
  .article-card{padding:20px;border-radius:14px;}
  .article-content h2{font-size:19.5px;}
  .article-content h3{font-size:16.5px;}
  .article-cover{margin-bottom:18px;border-radius:14px;}
  .section{padding:44px 0;}
  .section-head h2{font-size:22px;}
  .related-grid{grid-template-columns:1fr;}
  .faq-q{padding:16px 18px;font-size:14.5px;}
  .faq-a-inner{padding:0 18px 16px 18px;}
  .cta-block{padding:32px 22px;border-radius:16px;}
  .cta-block h2{font-size:21px;}
  .cta-actions{width:100%;}
  .cta-actions .btn{flex:1 1 auto;}
  .footer-grid{grid-template-columns:1fr;gap:24px;}
  .footer-bottom{flex-direction:column;gap:8px;}
}
@media (max-width:520px){
  .header-cta .btn-sm{padding:8px 10px;}
  .brand-text{max-width:132px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;}
  .article-card{padding:16px;}
  .article-meta{font-size:12px;gap:8px;}
}

/* roulang page: category2 */
:root{
  --brand:#107F8C;
  --brand-600:#0d6d79;
  --brand-900:#0a4a52;
  --accent:#E8A33D;
  --accent-soft:rgba(232,163,61,.14);
  --bg:#F6F8F9;
  --card:#FFFFFF;
  --ink:#1B2A2E;
  --muted:#5A6B70;
  --line:#E3E9EA;
  --brand-soft:rgba(16,127,140,.10);
  --brand-line:rgba(16,127,140,.26);
  --r-card:16px;
  --r-btn:10px;
  --r-img:12px;
  --shadow-sm:0 2px 8px rgba(16,32,36,.06);
  --shadow-md:0 8px 24px rgba(16,32,36,.08);
  --shadow-lg:0 16px 40px rgba(16,32,36,.10);
  --container:1180px;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;}
body{
  margin:0;
  font-family:system-ui,-apple-system,"PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;
  font-size:16px;
  line-height:1.8;
  color:var(--ink);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}
img{display:block;max-width:100%;height:auto;}
svg{display:block;}
a{color:var(--brand);text-decoration:none;transition:color .18s ease;}
a:hover{color:var(--brand-600);}
ul,ol{margin:0;padding:0;list-style:none;}
h1,h2,h3,h4{margin:0;line-height:1.3;font-weight:700;letter-spacing:-.2px;}
p{margin:0;}
button{font-family:inherit;}
:focus-visible{outline:2px solid var(--accent);outline-offset:2px;border-radius:6px;}
.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 24px;}

/* ---------- header / nav ---------- */
.site-header{
  position:sticky;top:0;z-index:80;
  background:rgba(246,248,249,.94);
  backdrop-filter:saturate(140%) blur(10px);
  border-bottom:1px solid rgba(227,233,234,.9);
}
.header-card{
  display:flex;align-items:center;gap:18px;
  background:var(--card);
  border:1px solid var(--line);
  border-radius:16px;
  box-shadow:var(--shadow-md);
  padding:10px 14px;
  margin:14px 0;
}
.brand{display:inline-flex;align-items:center;gap:10px;flex:0 0 auto;}
.brand-mark{
  display:inline-flex;align-items:center;justify-content:center;
  min-width:44px;height:38px;padding:0 10px;
  background:linear-gradient(135deg,var(--brand),var(--brand-900));
  color:#fff;font-size:13px;font-weight:700;letter-spacing:.6px;
  border-radius:10px;
}
.brand-text{font-size:15px;font-weight:700;color:var(--ink);letter-spacing:-.2px;white-space:nowrap;}
.nav-cards{display:flex;align-items:center;gap:8px;flex:1 1 auto;justify-content:center;flex-wrap:wrap;}
.nav-card{
  display:inline-flex;align-items:center;gap:8px;
  padding:9px 12px;border-radius:12px;
  background:#F2F6F7;border:1px solid transparent;
  color:#33525A;font-size:13px;font-weight:600;line-height:1.2;
  transition:background .18s ease,color .18s ease,border-color .18s ease,transform .18s ease;
  white-space:nowrap;
}
.nav-card svg{width:17px;height:17px;flex:0 0 auto;fill:none;stroke:currentColor;stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round;}
.nav-card:hover{background:#E6F1F2;color:var(--brand);border-color:var(--brand-line);transform:translateY(-1px);}
.nav-card.is-active{background:var(--brand-soft);color:var(--brand);border-color:var(--brand-line);}
.header-actions{display:flex;align-items:center;gap:8px;flex:0 0 auto;}
.nav-toggle{
  display:none;width:42px;height:42px;align-items:center;justify-content:center;
  background:#fff;border:1px solid var(--line);border-radius:10px;color:var(--ink);cursor:pointer;
  transition:border-color .18s ease,color .18s ease;
}
.nav-toggle:hover{border-color:var(--brand-line);color:var(--brand);}
.nav-toggle svg{width:20px;height:20px;fill:none;stroke:currentColor;stroke-width:2;stroke-linecap:round;}
.nav-mobile{display:none;padding-bottom:16px;}
.nav-mobile.is-open{display:block;}
.nav-mobile-list{display:grid;gap:8px;}
.nav-mobile-list .nav-card{width:100%;justify-content:flex-start;padding:13px 14px;font-size:14px;}
.nav-mobile-list .nav-card::after{content:"›";margin-left:auto;font-size:18px;color:#9DB1B6;}

/* ---------- buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:12px 22px;border-radius:var(--r-btn);
  font-size:15px;font-weight:600;line-height:1.2;
  border:1.5px solid transparent;cursor:pointer;
  transition:transform .18s ease,box-shadow .18s ease,background .18s ease,color .18s ease,border-color .18s ease;
}
.btn-primary{background:var(--brand);color:#fff;box-shadow:var(--shadow-md);}
.btn-primary:hover{background:var(--brand-600);color:#fff;transform:translateY(-1px);box-shadow:var(--shadow-lg);}
.btn-ghost{background:#fff;color:var(--brand);border-color:var(--brand);}
.btn-ghost:hover{background:var(--brand-soft);color:var(--brand-600);transform:translateY(-1px);}
.btn-sm{padding:9px 16px;font-size:13.5px;border-radius:9px;}
.btn:active{transform:translateY(0);}

/* ---------- common bits ---------- */
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  padding:6px 14px;border-radius:999px;
  background:var(--brand-soft);color:var(--brand);
  font-size:13px;font-weight:600;letter-spacing:.2px;
}
.eyebrow.warm{background:var(--accent-soft);color:#A96B12;}
.section{padding:56px 0;}
.section-head{max-width:720px;margin-bottom:28px;}
.section-head h2{font-size:28px;margin-bottom:8px;}
.section-head h2::before{
  content:"";display:block;width:44px;height:4px;border-radius:2px;
  background:var(--brand);margin-bottom:14px;
}
.section-head p{color:var(--muted);font-size:15.5px;}
.tag{
  display:inline-flex;align-items:center;
  padding:4px 11px;border-radius:999px;
  background:var(--brand-soft);color:var(--brand);
  font-size:12.5px;font-weight:600;
}
.tag.warm{background:var(--accent-soft);color:#A96B12;}

/* ---------- breadcrumb ---------- */
.breadcrumb{padding:18px 0 0;font-size:13px;color:var(--muted);display:flex;flex-wrap:wrap;gap:6px;align-items:center;}
.breadcrumb a{color:var(--muted);}
.breadcrumb a:hover{color:var(--brand);}
.breadcrumb .sep{color:var(--brand);opacity:.7;}

/* ---------- hero ---------- */
.hero{padding:22px 0 6px;}
.hero-card{
  display:grid;grid-template-columns:1.08fr .92fr;gap:40px;align-items:center;
  background:linear-gradient(135deg,#FFFFFF 0%,#EDF6F7 100%);
  border:1px solid var(--line);border-radius:24px;
  padding:44px;box-shadow:var(--shadow-sm);
}
.hero-card h1{font-size:40px;letter-spacing:-.5px;margin:16px 0 14px;}
.hero-card h1 span{color:var(--brand);}
.hero-lead{font-size:16.5px;color:var(--muted);max-width:520px;}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:26px;}
.badges{display:flex;flex-wrap:wrap;gap:10px;margin-top:26px;}
.badge{
  display:inline-flex;align-items:center;gap:7px;
  padding:7px 14px;border-radius:999px;
  background:#fff;border:1px solid var(--line);
  font-size:13px;color:#38565D;font-weight:600;box-shadow:var(--shadow-sm);
}
.badge i{width:7px;height:7px;border-radius:50%;background:var(--brand);display:inline-block;}
.badge:nth-child(even) i{background:var(--accent);}
.hero-media{position:relative;}
.hero-media img{
  width:100%;aspect-ratio:16/11;object-fit:cover;
  border-radius:var(--r-img);border:1px solid var(--line);
  box-shadow:var(--shadow-lg);
}
.hero-media .corner{
  position:absolute;left:-14px;bottom:-14px;
  background:#fff;border:1px solid var(--line);border-radius:12px;
  padding:10px 16px;box-shadow:var(--shadow-md);
  font-size:13px;font-weight:600;color:var(--brand);
}

/* ---------- quick stats ---------- */
.quick{padding:26px 0 0;}
.quick-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:16px;}
.quick-item{
  background:#fff;border:1px solid var(--line);border-radius:14px;
  padding:18px 20px;box-shadow:var(--shadow-sm);
  transition:box-shadow .18s ease,transform .18s ease;
}
.quick-item:hover{transform:translateY(-2px);box-shadow:var(--shadow-md);}
.quick-item strong{display:block;font-size:20px;color:var(--brand);font-variant-numeric:tabular-nums;letter-spacing:-.3px;}
.quick-item span{display:block;font-size:13px;color:var(--muted);margin-top:2px;}

/* ---------- tiles ---------- */
.grid-3{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;}
.tile{
  display:flex;flex-direction:column;
  background:var(--card);border:1px solid var(--line);border-radius:var(--r-card);
  overflow:hidden;box-shadow:var(--shadow-md);
  transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
}
.tile:hover{transform:translateY(-3px);box-shadow:var(--shadow-lg);border-color:var(--brand-line);}
.tile-media{position:relative;aspect-ratio:16/9;background:#E9EFF0;overflow:hidden;}
.tile-media img{width:100%;height:100%;object-fit:cover;}
.tile-media .tag{position:absolute;left:14px;top:14px;background:#fff;box-shadow:var(--shadow-sm);}
.tile-body{padding:22px;display:flex;flex-direction:column;flex:1 1 auto;}
.tile-body h3{font-size:18px;margin-bottom:8px;}
.tile-body p{font-size:14.5px;color:var(--muted);line-height:1.75;}
.tile-link{
  margin-top:16px;display:inline-flex;align-items:center;gap:6px;
  font-size:14px;font-weight:600;color:var(--brand);
}
.tile-link svg{width:16px;height:16px;fill:none;stroke:currentColor;stroke-width:2;stroke-linecap:round;stroke-linejoin:round;transition:transform .18s ease;}
.tile:hover .tile-link svg{transform:translateX(3px);}
.tile:hover .tile-link{text-decoration:underline;text-underline-offset:4px;}

/* ---------- notice ---------- */
.notice-wrap{padding:8px 0 0;}
.notice{
  display:flex;gap:16px;align-items:flex-start;
  background:linear-gradient(120deg,rgba(16,127,140,.10),rgba(16,127,140,.04));
  border:1px solid var(--brand-line);border-radius:16px;
  padding:22px 26px;
}
.notice-icon{
  flex:0 0 auto;width:38px;height:38px;border-radius:10px;
  background:#fff;border:1px solid var(--brand-line);
  display:flex;align-items:center;justify-content:center;color:var(--brand);
}
.notice-icon svg{width:20px;height:20px;fill:none;stroke:currentColor;stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round;}
.notice h3{font-size:16px;margin-bottom:4px;}
.notice p{font-size:14.5px;color:#3C5960;}

/* ---------- compare panels ---------- */
.compare{display:grid;grid-template-columns:1fr 1fr;gap:24px;}
.panel{
  background:var(--card);border:1px solid var(--line);border-radius:var(--r-card);
  padding:28px;box-shadow:var(--shadow-sm);
}
.panel-head{display:flex;align-items:center;gap:12px;margin-bottom:8px;}
.panel-head .dot{
  width:36px;height:36px;border-radius:10px;display:flex;align-items:center;justify-content:center;
  background:var(--brand-soft);color:var(--brand);flex:0 0 auto;
}
.panel-head .dot svg{width:18px;height:18px;fill:none;stroke:currentColor;stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round;}
.panel.warm .panel-head .dot{background:var(--accent-soft);color:#A96B12;}
.panel-head h3{font-size:18px;}
.checklist li{
  display:flex;gap:12px;align-items:flex-start;
  padding:13px 2px;border-bottom:1px dashed var(--line);
  font-size:14.5px;color:#3C5960;
  transition:background .18s ease;
}
.checklist li:last-child{border-bottom:0;}
.checklist li:hover{background:#FAFCFC;}
.checklist li .num{
  flex:0 0 auto;font-size:13px;font-weight:700;color:var(--brand);
  font-variant-numeric:tabular-nums;padding-top:2px;min-width:18px;
}
.panel.warm .checklist li .num{color:#B8781A;}

/* ---------- faq ---------- */
.faq-item{
  background:var(--card);border:1px solid var(--line);border-radius:14px;
  margin-bottom:12px;overflow:hidden;box-shadow:var(--shadow-sm);
  transition:border-color .18s ease,box-shadow .18s ease;
}
.faq-item:hover{border-color:var(--brand-line);box-shadow:var(--shadow-md);}
.faq-item summary{
  list-style:none;cursor:pointer;
  padding:18px 22px;font-size:16px;font-weight:600;
  display:flex;align-items:center;gap:14px;
  position:relative;
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary::before{
  content:"";width:3px;height:18px;border-radius:2px;background:var(--brand);
  opacity:0;transition:opacity .18s ease;flex:0 0 auto;
}
.faq-item[open] summary::before{opacity:1;}
.faq-item summary::after{
  content:"+";margin-left:auto;font-size:20px;font-weight:500;
  color:var(--brand);line-height:1;transition:transform .18s ease;
}
.faq-item[open] summary::after{content:"−";}
.faq-item[open] summary{color:var(--brand);}
.faq-panel{padding:0 22px 20px 39px;color:var(--muted);font-size:15px;}

/* ---------- cta ---------- */
.cta-card{
  background:linear-gradient(120deg,rgba(16,127,140,.12),rgba(232,163,61,.12));
  border:1px solid var(--brand-line);border-radius:20px;
  padding:46px 36px;text-align:center;
}
.cta-card h2{font-size:26px;margin-bottom:10px;}
.cta-card p{color:#3C5960;font-size:15.5px;max-width:660px;margin:0 auto;}
.cta-actions{display:flex;justify-content:center;flex-wrap:wrap;gap:12px;margin-top:26px;}

/* ---------- footer ---------- */
.site-footer{
  background:#12262B;color:#B9C9CC;
  border-top:1px solid rgba(16,127,140,.35);
  margin-top:24px;
}
.footer-grid{
  display:grid;grid-template-columns:1.65fr 1fr 1fr 1fr;gap:34px;
  padding:56px 0 34px;
}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:14px;}
.footer-brand .brand-mark{height:34px;min-width:40px;font-size:12px;}
.footer-brand strong{color:#fff;font-size:15px;font-weight:700;letter-spacing:-.2px;}
.footer-col p{font-size:13px;line-height:1.85;color:#93A7AB;max-width:330px;}
.footer-col h4{font-size:13.5px;color:#7FD3D8;margin-bottom:14px;letter-spacing:.4px;font-weight:600;}
.footer-col ul li{margin-bottom:9px;}
.footer-col ul a{font-size:13px;color:#9FB2B6;}
.footer-col ul a:hover{color:#fff;}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.08);
  padding:18px 0 26px;display:flex;justify-content:space-between;gap:12px;flex-wrap:wrap;
  font-size:12.5px;color:#7F9296;
}

/* ---------- responsive ---------- */
@media (max-width:1023px){
  .nav-cards{display:none;}
  .nav-toggle{display:inline-flex;}
  .header-card{gap:12px;}
  .brand-text{font-size:14px;}
  .hero-card{grid-template-columns:1fr;gap:28px;padding:32px;}
  .hero-card h1{font-size:32px;}
  .quick-grid{grid-template-columns:repeat(2,1fr);}
  .grid-3{grid-template-columns:repeat(2,1fr);}
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px;padding:44px 0 28px;}
  .footer-col p{max-width:none;}
}
@media (max-width:767px){
  .container{padding:0 18px;}
  .header-card{margin:10px 0;padding:9px 11px;border-radius:14px;}
  .brand-mark{min-width:38px;height:34px;font-size:11.5px;}
  .brand-text{font-size:13px;white-space:normal;line-height:1.25;}
  .header-actions .btn-sm{display:none;}
  .hero{padding:14px 0 0;}
  .hero-card{padding:24px;border-radius:20px;}
  .hero-card h1{font-size:27px;margin:14px 0 12px;}
  .hero-lead{font-size:15px;}
  .hero-actions .btn{width:100%;}
  .badges{gap:8px;}
  .badge{font-size:12px;padding:6px 12px;}
  .hero-media .corner{left:auto;right:10px;bottom:10px;font-size:12px;padding:8px 12px;}
  .section{padding:40px 0;}
  .section-head h2{font-size:22px;}
  .grid-3{grid-template-columns:1fr;}
  .compare{grid-template-columns:1fr;}
  .quick-grid{grid-template-columns:repeat(2,1fr);gap:12px;}
  .quick-item{padding:14px 16px;}
  .quick-item strong{font-size:17px;}
  .notice{padding:18px;flex-direction:column;gap:12px;}
  .panel{padding:22px;}
  .faq-item summary{padding:16px 18px;font-size:15px;}
  .faq-panel{padding:0 18px 18px 35px;font-size:14px;}
  .cta-card{padding:32px 22px;}
  .cta-card h2{font-size:21px;}
  .cta-actions .btn{width:100%;}
  .footer-grid{grid-template-columns:1fr;gap:24px;}
  .footer-bottom{flex-direction:column;gap:6px;}
}
@media (max-width:520px){
  .hero-card h1{font-size:24px;}
  .quick-grid{grid-template-columns:1fr;}
  .brand-text{max-width:150px;}
}

/* roulang page: category3 */
:root{
  --primary:#107F8C;
  --primary-dark:#0C6771;
  --primary-bright:#0E9AA7;
  --primary-soft:rgba(16,127,140,.10);
  --primary-line:rgba(16,127,140,.26);
  --amber:#E8A33D;
  --amber-soft:rgba(232,163,61,.14);
  --bg:#F6F8F9;
  --card:#FFFFFF;
  --ink:#1B2A2E;
  --muted:#5A6B70;
  --line:#E3E9EA;
  --deep:#12262B;
  --radius:16px;
  --radius-sm:10px;
  --radius-lg:20px;
  --shadow-sm:0 2px 8px rgba(16,32,36,.06);
  --shadow-md:0 8px 24px rgba(16,32,36,.08);
  --shadow-lg:0 16px 40px rgba(16,32,36,.10);
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:system-ui,-apple-system,"PingFang SC","Microsoft YaHei","Hiragino Sans GB",sans-serif;
  font-size:16px;
  line-height:1.8;
  color:var(--ink);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border-radius:12px}
a{color:var(--primary);text-decoration:none;transition:color .18s ease}
a:hover{color:var(--primary-dark)}
h1,h2,h3,h4{margin:0;font-weight:700;line-height:1.35;letter-spacing:-.3px}
p{margin:0 0 1em}
p:last-child{margin-bottom:0}
ul{margin:0;padding:0;list-style:none}
button{font:inherit;cursor:pointer;border:none;background:none}
:focus-visible{outline:2px solid var(--amber);outline-offset:2px;border-radius:8px}
.container{width:100%;max-width:1180px;margin:0 auto;padding:0 24px}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:12px 22px;border-radius:var(--radius-sm);
  font-size:15px;font-weight:600;line-height:1.2;
  border:1px solid transparent;
  transition:transform .18s ease,background-color .18s ease,box-shadow .18s ease,color .18s ease,border-color .18s ease;
  white-space:nowrap;
}
.btn-primary{background:var(--primary);color:#fff;box-shadow:var(--shadow-md)}
.btn-primary:hover{background:var(--primary-dark);color:#fff;transform:translateY(-1px);box-shadow:var(--shadow-lg)}
.btn-primary:active{transform:translateY(0);box-shadow:var(--shadow-sm)}
.btn-ghost{background:#fff;color:var(--primary);border:1.5px solid var(--primary-line)}
.btn-ghost:hover{background:var(--primary-soft);color:var(--primary-dark);border-color:var(--primary);transform:translateY(-1px)}
.btn-ghost:active{transform:translateY(0)}
.btn-sm{padding:9px 16px;font-size:13.5px;border-radius:9px}
.btn-block{width:100%}

/* ---------- 顶部导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:120;
  padding:14px 0 10px;
  background:rgba(246,248,249,.94);
  backdrop-filter:blur(10px);
  -webkit-backdrop-filter:blur(10px);
}
.header-inner{
  position:relative;
  display:flex;align-items:center;gap:18px;
  background:var(--card);
  border:1px solid var(--line);
  border-radius:18px;
  box-shadow:var(--shadow-md);
  padding:10px 14px;
}
.brand{display:flex;align-items:center;gap:10px;flex:0 0 auto;color:var(--ink)}
.brand:hover{color:var(--ink)}
.brand-mark{
  width:38px;height:38px;flex:0 0 auto;
  display:grid;place-items:center;
  border-radius:12px;
  background:linear-gradient(135deg,var(--primary),var(--primary-bright));
  color:#fff;font-size:12.5px;font-weight:700;letter-spacing:.6px;
  box-shadow:var(--shadow-sm);
}
.brand-text{display:flex;flex-direction:column;line-height:1.25}
.brand-text strong{font-size:15.5px;font-weight:700;letter-spacing:-.2px}
.brand-text em{font-style:normal;font-size:11.5px;color:var(--muted);letter-spacing:.3px}
.nav-cards{display:flex;align-items:center;gap:8px;flex:1 1 auto;justify-content:center;flex-wrap:wrap}
.nav-card{
  display:inline-flex;align-items:center;gap:8px;
  padding:9px 14px;border-radius:11px;
  background:#F2F6F7;border:1px solid transparent;
  color:var(--muted);font-size:13.5px;font-weight:500;
  white-space:nowrap;
  transition:background-color .18s ease,color .18s ease,border-color .18s ease,transform .18s ease;
}
.nav-card svg{width:16px;height:16px;flex:0 0 auto;fill:none;stroke:currentColor;stroke-width:1.7;stroke-linecap:round;stroke-linejoin:round}
.nav-card:hover{background:var(--primary-soft);color:var(--primary);border-color:var(--primary-line);transform:translateY(-1px)}
.nav-card.is-active{background:var(--primary-soft);color:var(--primary-dark);border-color:var(--primary-line);font-weight:600}
.header-actions{display:flex;align-items:center;gap:10px;flex:0 0 auto;margin-left:auto}
.nav-toggle{
  display:none;place-items:center;
  width:40px;height:40px;border-radius:11px;
  border:1px solid var(--line);background:#F2F6F7;color:var(--primary);
  transition:background-color .18s ease,color .18s ease,border-color .18s ease;
}
.nav-toggle svg{width:20px;height:20px;fill:none;stroke:currentColor;stroke-width:1.9;stroke-linecap:round}
.nav-toggle:hover{background:var(--primary-soft);border-color:var(--primary-line)}
.nav-toggle[aria-expanded="true"]{background:var(--primary-soft);border-color:var(--primary-line)}

/* ---------- 首屏 ---------- */
.page-hero{
  position:relative;overflow:hidden;color:#fff;
  padding:60px 0 68px;
  background:
    linear-gradient(135deg,rgba(16,127,140,.95),rgba(12,103,113,.88)),
    url("/assets/images/backpic/back-2.png") center/cover no-repeat;
}
.page-hero::after{
  content:"";position:absolute;inset:0;pointer-events:none;
  background:radial-gradient(circle at 86% 12%,rgba(232,163,61,.20),transparent 56%);
}
.page-hero .container{position:relative;z-index:1}
.breadcrumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:rgba(255,255,255,.72)}
.breadcrumb a{color:rgba(255,255,255,.78)}
.breadcrumb a:hover{color:#fff}
.breadcrumb .sep{color:rgba(255,255,255,.42)}
.eyebrow{
  display:inline-flex;align-items:center;gap:6px;
  margin-top:22px;padding:5px 13px;border-radius:999px;
  background:rgba(255,255,255,.16);
  border:1px solid rgba(255,255,255,.30);
  font-size:12.5px;letter-spacing:.05em;color:#fff;
}
.page-hero h1{
  margin:18px 0 16px;max-width:920px;
  font-size:40px;line-height:1.25;letter-spacing:-.5px;color:#fff;
}
.lead{max-width:780px;font-size:16.5px;line-height:1.85;color:rgba(255,255,255,.88);margin-bottom:26px}
.hero-badges{display:flex;flex-wrap:wrap;gap:10px}
.badge{
  display:inline-flex;align-items:center;gap:7px;
  padding:7px 15px;border-radius:999px;
  background:rgba(255,255,255,.14);
  border:1px solid rgba(255,255,255,.26);
  font-size:13px;color:#fff;
}
.badge::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--amber)}

/* ---------- 板块通用 ---------- */
.section{padding:72px 0}
.section-alt{background:#fff;border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.section-head{max-width:760px;margin-bottom:34px}
.section-head h2{font-size:28px;line-height:1.35}
.section-head h2::before{
  content:"";display:block;width:38px;height:4px;border-radius:2px;
  background:var(--primary);margin-bottom:16px;
}
.section-head p{margin-top:12px;font-size:15.5px;color:var(--muted)}

/* ---------- 双栏布局 ---------- */
.split{display:grid;grid-template-columns:minmax(0,1.62fr) minmax(0,1fr);gap:32px;align-items:start}
.split-side{position:sticky;top:100px;display:grid;gap:20px}

/* ---------- 分组列表 ---------- */
.rule-group{
  background:var(--card);
  border:1px solid var(--line);
  border-radius:var(--radius);
  box-shadow:var(--shadow-sm);
  padding:26px 28px 12px;
  margin-bottom:20px;
  transition:box-shadow .2s ease,border-color .2s ease,transform .2s ease;
}
.rule-group:hover{box-shadow:var(--shadow-md);border-color:var(--primary-line);transform:translateY(-2px)}
.rule-group:last-child{margin-bottom:0}
.group-head{display:flex;align-items:center;gap:12px}
.group-num{
  width:30px;height:30px;flex:0 0 auto;display:grid;place-items:center;
  border-radius:9px;background:var(--primary-soft);color:var(--primary-dark);
  font-size:13px;font-weight:700;
}
.rule-group h2{font-size:20px;letter-spacing:-.2px}
.group-desc{margin:10px 0 6px;font-size:14px;color:var(--muted)}
.rule-item{
  padding:16px 12px;margin:0 -12px;
  border-top:1px solid var(--line);
  border-radius:10px;
  transition:background-color .18s ease;
}
.rule-item:hover{background:#FAFCFC}
.rule-title{display:flex;align-items:center;gap:10px;font-size:16px;font-weight:600;color:var(--ink);margin-bottom:6px}
.rule-title .dot{width:7px;height:7px;border-radius:50%;background:var(--primary);flex:0 0 auto}
.rule-desc{font-size:14.5px;line-height:1.8;color:var(--muted);margin:0}
.tag{
  display:inline-flex;align-items:center;
  margin-top:10px;padding:3px 11px;border-radius:999px;
  background:var(--primary-soft);color:var(--primary-dark);
  font-size:12px;font-weight:600;
}

/* ---------- 侧栏卡片 ---------- */
.side-card{
  background:var(--card);
  border:1px solid var(--line);
  border-radius:var(--radius);
  box-shadow:var(--shadow-sm);
  padding:24px;
  transition:box-shadow .2s ease,transform .2s ease,border-color .2s ease;
}
.side-card:hover{box-shadow:var(--shadow-md);transform:translateY(-2px);border-color:var(--primary-line)}
.side-card h3{font-size:17px;margin-bottom:14px}
.summary-figure{margin:0 0 16px}
.summary-figure img{
  width:100%;height:168px;object-fit:cover;
  border-radius:12px;border:1px solid var(--line);
}
.checklist li{display:flex;align-items:flex-start;gap:10px;padding:10px 0;border-top:1px solid var(--line);font-size:14.5px;color:var(--ink)}
.checklist li:first-child{border-top:none;padding-top:0}
.ck{
  width:20px;height:20px;flex:0 0 auto;margin-top:3px;
  display:grid;place-items:center;border-radius:50%;
  background:var(--primary-soft);color:var(--primary-dark);
  font-size:11px;font-weight:700;
}
.side-cta{
  background:linear-gradient(135deg,var(--primary),var(--primary-dark));
  border:none;color:#fff;padding:26px;
  box-shadow:var(--shadow-md);
}
.side-cta:hover{transform:translateY(-2px);box-shadow:var(--shadow-lg);border-color:transparent}
.side-cta h3{color:#fff;margin-bottom:10px}
.side-cta p{font-size:14px;color:rgba(255,255,255,.85);margin-bottom:18px}
.side-cta .btn{width:100%;background:#fff;color:var(--primary-dark);box-shadow:var(--shadow-sm)}
.side-cta .btn:hover{background:#EAF7F8;color:var(--primary-dark);transform:translateY(-1px)}
.side-note{
  background:var(--amber-soft);
  border:1px solid rgba(232,163,61,.36);
  border-left:3px solid var(--amber);
  border-radius:14px;
  padding:20px 22px;
  box-shadow:none;
}
.side-note:hover{transform:none;box-shadow:none;border-color:rgba(232,163,61,.36)}
.side-note h3{font-size:15px;color:#8A5B10;margin-bottom:8px}
.side-note p{font-size:13.8px;line-height:1.8;color:#7A5A22}

/* ---------- FAQ ---------- */
.faq-list{display:grid;gap:12px;max-width:920px}
.faq-item{
  background:var(--card);
  border:1px solid var(--line);
  border-radius:14px;
  box-shadow:var(--shadow-sm);
  overflow:hidden;
  transition:box-shadow .2s ease,border-color .2s ease;
}
.faq-item:hover{border-color:var(--primary-line)}
.faq-item[open]{border-color:var(--primary-line);box-shadow:var(--shadow-md)}
.faq-item summary{
  position:relative;
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:18px 22px;
  font-size:16px;font-weight:600;color:var(--ink);
  list-style:none;cursor:pointer;
  transition:color .18s ease;
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary::before{
  content:"";position:absolute;left:0;top:14px;bottom:14px;width:3px;
  border-radius:0 3px 3px 0;background:var(--primary);
  opacity:0;transition:opacity .18s ease;
}
.faq-item summary::after{
  content:"+";flex:0 0 auto;
  width:26px;height:26px;display:grid;place-items:center;
  border-radius:50%;background:var(--primary-soft);color:var(--primary-dark);
  font-size:16px;font-weight:600;
  transition:transform .18s ease,background-color .18s ease;
}
.faq-item[open] summary{color:var(--primary-dark)}
.faq-item[open] summary::before{opacity:1}
.faq-item[open] summary::after{content:"−";background:var(--primary);color:#fff}
.faq-body{padding:0 22px 20px;font-size:14.8px;line-height:1.85;color:var(--muted)}

/* ---------- 收尾 CTA ---------- */
.closing-cta{
  display:flex;align-items:center;justify-content:space-between;gap:28px;flex-wrap:wrap;
  padding:40px;
  border-radius:var(--radius-lg);
  background:linear-gradient(135deg,rgba(16,127,140,.10),rgba(232,163,61,.12));
  border:1px solid var(--primary-line);
}
.closing-cta h2{font-size:24px;margin-bottom:10px}
.closing-cta p{color:var(--muted);font-size:15px;max-width:620px;margin:0}
.closing-cta .cta-actions{display:flex;gap:12px;flex-wrap:wrap}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--deep);color:#C8D6D9;padding:64px 0 0;margin-top:0}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:32px}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:14px}
.footer-brand .brand-mark{box-shadow:none}
.footer-brand strong{color:#fff;font-size:15.5px;letter-spacing:-.2px}
.site-footer p{font-size:13.5px;line-height:1.85;color:#9FB4B8}
.footer-col h4{font-size:14px;color:#7FC7CF;margin-bottom:14px;letter-spacing:.02em}
.footer-col ul li{margin-bottom:10px}
.footer-col ul li:last-child{margin-bottom:0}
.footer-col a{font-size:13px;color:#A9BDC1}
.footer-col a:hover{color:#fff}
.footer-bottom{
  display:flex;justify-content:space-between;align-items:center;gap:16px;flex-wrap:wrap;
  margin-top:44px;padding:18px 0 26px;
  border-top:1px solid rgba(16,127,140,.28);
  font-size:12.5px;color:#7E9398;
}

/* ---------- 响应式 ---------- */
@media (max-width:1023px){
  .page-hero h1{font-size:34px}
  .section{padding:56px 0}
  .split{grid-template-columns:1fr;gap:22px}
  .split-side{position:static}
  .footer-grid{grid-template-columns:1fr 1fr}
  .nav-cards{
    display:none;
    position:absolute;top:calc(100% + 10px);left:-1px;right:-1px;
    flex-direction:column;flex-wrap:nowrap;gap:8px;
    background:var(--card);
    border:1px solid var(--line);
    border-radius:18px;
    box-shadow:var(--shadow-lg);
    padding:12px;
    z-index:130;
  }
  .nav-cards.is-open{display:flex}
  .nav-card{width:100%;justify-content:flex-start;padding:12px 14px;font-size:14px}
  .nav-card::after{content:"›";margin-left:auto;color:var(--primary);font-size:16px;line-height:1}
  .nav-toggle{display:grid}
}
@media (max-width:767px){
  .container{padding:0 18px}
  .site-header{padding:10px 0 8px}
  .header-inner{padding:8px 10px;gap:10px;border-radius:16px}
  .brand-text strong{font-size:14px}
  .brand-text em{font-size:10.5px}
  .brand-mark{width:34px;height:34px;font-size:11.5px}
  .page-hero{padding:38px 0 46px}
  .page-hero h1{font-size:28px;line-height:1.3}
  .lead{font-size:15px}
  .section{padding:44px 0}
  .section-head h2{font-size:22px}
  .rule-group{padding:20px 18px 8px}
  .rule-group h2{font-size:18px}
  .side-card{padding:20px}
  .closing-cta{padding:26px}
  .closing-cta h2{font-size:20px}
  .closing-cta .cta-actions{width:100%}
  .closing-cta .btn{flex:1 1 auto}
  .footer-grid{grid-template-columns:1fr;gap:26px}
  .footer-bottom{flex-direction:column;align-items:flex-start;gap:8px;margin-top:32px}
}
@media (max-width:519px){
  .header-actions .btn-sm{display:none}
  .page-hero h1{font-size:24px}
  .eyebrow{font-size:11.5px}
  .badge{font-size:12px;padding:6px 12px}
  .rule-title{font-size:15px}
  .faq-item summary{padding:16px 18px;font-size:15px}
  .faq-body{padding:0 18px 18px;font-size:14.2px}
  .side-cta .btn,.btn{width:100%}
  .closing-cta .btn{width:100%}
}