/* roulang page: index */
:root{
  --c-ink:#0E1A18;
  --c-primary:#0E3A34;
  --c-primary-2:#12564D;
  --c-accent:#18C8B0;
  --c-accent-soft:rgba(24,200,176,.12);
  --c-hot:#FF8A3D;
  --c-bg:#F4F7F5;
  --c-surface:#FFFFFF;
  --c-surface-2:#EAF1EE;
  --c-text:#17201E;
  --c-muted:#5E6A66;
  --c-line:#D7E2DD;
  --c-success:#2BB673;
  --c-warning:#E8A23A;
  --c-danger:#D9534F;
  --r-card:16px;
  --r-btn:11px;
  --r-input:10px;
  --r-img:14px;
  --sh-1:0 8px 24px rgba(14,42,42,.08);
  --sh-2:0 14px 34px rgba(14,42,42,.14);
  --sec-pad:88px;
  --container:1200px;
  --font-cn:"Noto Sans SC","PingFang SC","Microsoft YaHei","Source Han Sans SC","Hiragino Sans GB",sans-serif;
}

/* ---------- base ---------- */
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--c-bg);
  color:var(--c-text);
  font-family:var(--font-cn);
  font-size:16px;
  line-height:1.8;
  font-weight:400;
  -webkit-font-smoothing:antialiased;
  padding-bottom:0;
}
h1,h2,h3,h4,h5{margin:0 0 .6em;font-weight:800;line-height:1.3;color:var(--c-ink);letter-spacing:-.01em;}
h1{font-size:42px;}
h2{font-size:30px;}
h3{font-size:22px;}
h4{font-size:17px;}
p{margin:0 0 1.1em;color:var(--c-text);}
ul,ol{margin:0;padding:0;list-style:none;}
img{max-width:100%;height:auto;display:block;}
a{color:var(--c-primary-2);text-decoration:none;transition:color .2s ease,opacity .2s ease;}
a:hover{color:var(--c-accent);}
button{font-family:inherit;}
.num{font-variant-numeric:tabular-nums;font-feature-settings:"tnum";}
:focus-visible{outline:2px solid var(--c-accent);outline-offset:2px;border-radius:4px;}

.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 32px;}
.container-wide{max-width:1320px;}
.section{padding:var(--sec-pad) 0;}
.section--tight{padding:64px 0;}
.section--surface{background:var(--c-surface);}
.section--deep{background:var(--c-primary);color:#E9F3F0;}
.section--deep h2,.section--deep h3{color:#fff;}

/* ---------- shared bits ---------- */
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;font-weight:600;letter-spacing:.14em;
  color:var(--c-primary-2);text-transform:uppercase;
  padding:6px 12px;border-radius:999px;
  background:var(--c-accent-soft);border:1px solid rgba(24,200,176,.28);
  margin-bottom:18px;
}
.eyebrow::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--c-accent);}
.section-head{max-width:760px;margin-bottom:44px;}
.section-head p{color:var(--c-muted);font-size:17px;margin-bottom:0;}
.section-head--center{margin-left:auto;margin-right:auto;text-align:center;}

.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:9px;
  height:48px;padding:0 26px;border-radius:var(--r-btn);
  font-size:16px;font-weight:600;letter-spacing:.01em;
  border:1px solid transparent;cursor:pointer;
  transition:transform .18s ease,background .18s ease,box-shadow .18s ease,border-color .18s ease,color .18s ease;
  white-space:nowrap;
}
.btn i{font-size:15px;}
.btn--primary{background:var(--c-primary);color:#fff;box-shadow:0 6px 18px rgba(14,58,52,.18);}
.btn--primary:hover{background:var(--c-primary-2);color:#fff;transform:translateY(-1px);box-shadow:0 12px 26px rgba(14,58,52,.24);}
.btn--hot{background:var(--c-hot);color:#2A1405;box-shadow:0 6px 18px rgba(255,138,61,.28);}
.btn--hot:hover{background:#FF9C5B;color:#2A1405;transform:translateY(-1px);}
.btn--ghost{background:var(--c-surface);color:var(--c-primary);border-color:var(--c-line);}
.btn--ghost:hover{border-color:var(--c-accent);background:var(--c-accent-soft);color:var(--c-primary);transform:translateY(-1px);}
.btn--text{height:auto;padding:4px 0;background:none;color:var(--c-accent);font-weight:600;}
.btn--text:hover{text-decoration:underline;color:var(--c-accent);}
.btn--sm{height:40px;padding:0 18px;font-size:15px;}

.badge{
  display:inline-flex;align-items:center;gap:6px;
  padding:4px 12px;border-radius:999px;font-size:13px;font-weight:600;
  background:var(--c-surface-2);color:var(--c-primary-2);border:1px solid var(--c-line);
}
.badge--accent{background:var(--c-accent-soft);color:#0C6E62;border-color:rgba(24,200,176,.35);}
.badge--hot{background:rgba(255,138,61,.14);color:#A8541A;border-color:rgba(255,138,61,.32);}

.card{
  background:var(--c-surface);border:1px solid var(--c-line);
  border-radius:var(--r-card);box-shadow:var(--sh-1);
  transition:box-shadow .22s ease,transform .22s ease,border-color .22s ease;
}
.card:hover{box-shadow:var(--sh-2);transform:translateY(-3px);border-color:#C6D8D2;}

/* ---------- header ---------- */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(244,247,245,.92);
  backdrop-filter:saturate(180%) blur(12px);
  border-bottom:1px solid var(--c-line);
  transition:box-shadow .25s ease,background .25s ease;
}
.site-header.is-scrolled{box-shadow:0 6px 22px rgba(14,42,42,.10);background:rgba(255,255,255,.96);}
.header-inner{display:flex;align-items:center;gap:26px;height:70px;}
.brand{display:flex;align-items:center;gap:11px;flex-shrink:0;}
.brand-mark{
  width:36px;height:36px;border-radius:11px;
  background:linear-gradient(145deg,var(--c-primary),var(--c-primary-2));
  display:grid;place-items:center;flex-shrink:0;
  box-shadow:0 6px 16px rgba(14,58,52,.25);
}
.brand-mark svg{width:20px;height:20px;display:block;}
.brand-text{font-size:18px;font-weight:800;color:var(--c-ink);letter-spacing:-.01em;white-space:nowrap;}
.brand-text span{color:var(--c-accent);}
.brand:hover .brand-text{color:var(--c-primary-2);}

.site-nav{display:flex;align-items:center;gap:4px;margin-left:8px;}
.site-nav a{
  position:relative;padding:9px 13px;border-radius:9px;
  font-size:15px;font-weight:500;color:var(--c-text);white-space:nowrap;
  transition:color .18s ease,background .18s ease;
}
.site-nav a:hover{color:var(--c-primary);background:var(--c-surface-2);}
.site-nav a.is-active{color:var(--c-primary);font-weight:700;}
.site-nav a.is-active::after{
  content:"";position:absolute;left:13px;right:13px;bottom:2px;height:2px;
  border-radius:2px;background:var(--c-accent);
}
.header-actions{display:flex;align-items:center;gap:12px;margin-left:auto;}
.icon-btn{
  width:42px;height:42px;border-radius:11px;border:1px solid var(--c-line);
  background:var(--c-surface);color:var(--c-primary);cursor:pointer;
  display:grid;place-items:center;font-size:16px;
  transition:background .18s ease,border-color .18s ease,color .18s ease,transform .18s ease;
}
.icon-btn:hover{background:var(--c-accent-soft);border-color:var(--c-accent);color:var(--c-primary);transform:translateY(-1px);}
.search-panel{
  display:none;border-top:1px solid var(--c-line);background:var(--c-surface);
  padding:14px 0;
}
.search-panel.is-open{display:block;}
.search-form{display:flex;gap:10px;}
.search-form input{
  flex:1;height:46px;border-radius:var(--r-input);border:1px solid var(--c-line);
  padding:0 16px;font-size:15px;background:var(--c-bg);color:var(--c-text);
  transition:border-color .18s ease,box-shadow .18s ease;
}
.search-form input:focus{outline:none;border-color:var(--c-accent);box-shadow:0 0 0 3px var(--c-accent-soft);background:#fff;}

/* ---------- hero ---------- */
.hero{position:relative;overflow:hidden;background:var(--c-ink);}
.hero-bg{
  position:absolute;inset:0;
  background-image:url('/assets/images/backpic/back-1.png');
  background-size:cover;background-position:center;
  transform:scale(1.02);
}
.hero-bg::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(100deg,rgba(10,26,24,.94) 0%,rgba(10,26,24,.82) 42%,rgba(10,26,24,.46) 100%);
}
.hero-dots{
  position:absolute;inset:0;opacity:.16;pointer-events:none;
  background-image:radial-gradient(circle,rgba(24,200,176,.9) 1px,transparent 1px);
  background-size:34px 34px;
  mask-image:linear-gradient(120deg,rgba(0,0,0,.9),transparent 62%);
  -webkit-mask-image:linear-gradient(120deg,rgba(0,0,0,.9),transparent 62%);
}
.hero-inner{position:relative;padding:96px 0 90px;display:grid;grid-template-columns:1.15fr .85fr;gap:56px;align-items:center;}
.hero-copy .eyebrow{background:rgba(24,200,176,.16);border-color:rgba(24,200,176,.4);color:#7FE9DA;}
.hero-copy h1{color:#fff;font-size:44px;line-height:1.24;margin-bottom:20px;}
.hero-copy h1 em{font-style:normal;color:var(--c-accent);}
.hero-copy .lead{color:#C3D6D2;font-size:17px;line-height:1.85;max-width:600px;margin-bottom:30px;}
.hero-cta{display:flex;flex-wrap:wrap;gap:14px;margin-bottom:34px;}
.hero-meta{display:flex;flex-wrap:wrap;gap:12px 28px;padding-top:26px;border-top:1px solid rgba(255,255,255,.14);}
.hero-meta div{display:flex;align-items:center;gap:9px;font-size:14px;color:#AFC7C3;}
.hero-meta i{color:var(--c-accent);font-size:14px;}
.hero-panel{
  background:rgba(255,255,255,.07);
  border:1px solid rgba(255,255,255,.14);
  border-radius:18px;padding:22px;
  backdrop-filter:blur(10px);
}
.hero-panel__media{
  border-radius:14px;overflow:hidden;margin-bottom:18px;
  aspect-ratio:16/10;background:#0B211E;
}
.hero-panel__media img{width:100%;height:100%;object-fit:cover;}
.hero-panel__title{color:#fff;font-size:17px;font-weight:700;margin-bottom:12px;}
.hero-panel ul{display:grid;gap:10px;}
.hero-panel li{
  display:flex;align-items:flex-start;gap:10px;
  font-size:14px;color:#BBD0CC;line-height:1.7;
}
.hero-panel li i{color:var(--c-accent);margin-top:5px;font-size:12px;}

/* ---------- metric board ---------- */
.metric-board{display:grid;grid-template-columns:repeat(4,1fr);gap:22px;}
.metric-card{
  position:relative;background:var(--c-surface);border:1px solid var(--c-line);
  border-radius:var(--r-card);padding:24px 22px 22px;box-shadow:var(--sh-1);
  overflow:hidden;transition:box-shadow .22s ease,transform .22s ease;
}
.metric-card::before{content:"";position:absolute;top:0;left:22px;width:36px;height:3px;border-radius:0 0 3px 3px;background:var(--c-accent);}
.metric-card:hover{box-shadow:var(--sh-2);transform:translateY(-3px);}
.metric-value{display:flex;align-items:baseline;gap:6px;font-size:36px;font-weight:800;color:var(--c-primary);line-height:1.1;}
.metric-value span{font-size:15px;font-weight:600;color:var(--c-muted);}
.metric-label{margin-top:8px;font-size:15px;font-weight:600;color:var(--c-text);}
.metric-trend{margin-top:10px;font-size:13px;color:var(--c-muted);display:flex;align-items:center;gap:6px;}
.metric-trend i{font-size:11px;color:var(--c-success);}
.metric-trend.is-flat i{color:var(--c-warning);}

/* ---------- service matrix ---------- */
.service-matrix{display:grid;grid-template-columns:1.25fr 1fr 1fr;grid-template-rows:auto auto;gap:22px;}
.service-card{
  position:relative;background:var(--c-surface);border:1px solid var(--c-line);
  border-radius:var(--r-card);padding:26px;box-shadow:var(--sh-1);
  display:flex;flex-direction:column;overflow:hidden;
  transition:box-shadow .22s ease,transform .22s ease,border-color .22s ease;
}
.service-card:hover{box-shadow:var(--sh-2);transform:translateY(-3px);border-color:#C6D8D2;}
.service-card h3{font-size:20px;margin-bottom:10px;}
.service-card p{font-size:15px;color:var(--c-muted);line-height:1.8;margin-bottom:16px;}
.service-card .btn--text{margin-top:auto;}
.service-icon{
  width:44px;height:44px;border-radius:12px;display:grid;place-items:center;
  background:var(--c-surface-2);color:var(--c-primary);font-size:18px;margin-bottom:16px;
}
.service-card--large{
  grid-row:span 2;
  background:linear-gradient(160deg,var(--c-primary) 0%,#0A2A25 100%);
  border-color:rgba(255,255,255,.08);
}
.service-card--large h3{color:#fff;font-size:24px;}
.service-card--large p{color:#B9CFCB;}
.service-card--large .service-icon{background:rgba(24,200,176,.18);color:var(--c-accent);}
.service-card--large .btn--text{color:var(--c-accent);}
.service-card--large::after{
  content:"";position:absolute;right:-40px;bottom:-40px;width:180px;height:180px;border-radius:50%;
  background:radial-gradient(circle,rgba(24,200,176,.20),transparent 70%);
}
.service-card--wide{grid-column:span 2;}
.service-card__media{
  border-radius:var(--r-img);overflow:hidden;aspect-ratio:16/10;margin-bottom:18px;background:var(--c-surface-2);
}
.service-card--large .service-card__media{aspect-ratio:16/9;}
.service-card__media img{width:100%;height:100%;object-fit:cover;}

/* ---------- news list ---------- */
.news-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;flex-wrap:wrap;margin-bottom:38px;}
.news-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;}
.news-card{
  display:flex;flex-direction:column;background:var(--c-surface);
  border:1px solid var(--c-line);border-radius:var(--r-card);overflow:hidden;
  box-shadow:var(--sh-1);transition:box-shadow .22s ease,transform .22s ease,border-color .22s ease;
}
.news-card:hover{box-shadow:var(--sh-2);transform:translateY(-3px);border-color:#C6D8D2;}
.news-card__media{aspect-ratio:16/10;overflow:hidden;background:var(--c-surface-2);}
.news-card__media img{width:100%;height:100%;object-fit:cover;transition:transform .4s ease;}
.news-card:hover .news-card__media img{transform:scale(1.04);}
.news-card__body{padding:20px 20px 22px;display:flex;flex-direction:column;flex:1;}
.news-card__meta{display:flex;align-items:center;gap:10px;font-size:13px;color:var(--c-muted);margin-bottom:11px;}
.news-card__meta .badge{font-size:12px;padding:3px 10px;}
.news-card h3{font-size:17px;line-height:1.5;margin-bottom:9px;}
.news-card h3 a{color:var(--c-ink);}
.news-card h3 a:hover{color:var(--c-primary-2);}
.news-card p{font-size:14px;color:var(--c-muted);line-height:1.75;margin-bottom:14px;
  display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden;}
.news-card__link{margin-top:auto;font-size:14px;font-weight:600;color:var(--c-accent);display:inline-flex;align-items:center;gap:6px;}
.news-card__link:hover{color:var(--c-primary-2);text-decoration:underline;}
.empty-state{
  grid-column:1/-1;text-align:center;padding:56px 24px;
  background:var(--c-surface);border:1px dashed var(--c-line);border-radius:var(--r-card);
}
.empty-state i{font-size:28px;color:var(--c-muted);margin-bottom:12px;display:block;}
.empty-state p{color:var(--c-muted);margin:0;font-size:15px;}

/* ---------- compare ---------- */
.compare-grid{display:grid;grid-template-columns:1fr 1fr;gap:24px;}
.compare-card{background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--r-card);padding:28px;box-shadow:var(--sh-1);}
.compare-card--alt{background:var(--c-surface-2);border-color:#CBDCD6;}
.compare-card h3{font-size:21px;margin-bottom:6px;display:flex;align-items:center;gap:10px;}
.compare-card__sub{font-size:14px;color:var(--c-muted);margin-bottom:20px;}
.compare-list{display:grid;gap:0;}
.compare-list li{
  display:flex;align-items:flex-start;justify-content:space-between;gap:18px;
  padding:14px 0;border-top:1px solid var(--c-line);font-size:15px;
}
.compare-list li:first-child{border-top:none;}
.compare-list .kv{color:var(--c-muted);flex-shrink:0;}
.compare-list .vv{color:var(--c-text);font-weight:600;text-align:right;}
.compare-list .vv i{color:var(--c-success);margin-right:6px;font-size:13px;}

/* ---------- faq ---------- */
.faq-accordion{max-width:900px;margin:0 auto;border-top:1px solid var(--c-line);}
.faq-item{border-bottom:1px solid var(--c-line);}
.faq-item summary{
  list-style:none;cursor:pointer;padding:22px 46px 22px 0;position:relative;
  font-size:17px;font-weight:700;color:var(--c-ink);line-height:1.6;
  transition:color .18s ease;
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary::after{
  content:"+";position:absolute;right:12px;top:50%;transform:translateY(-50%);
  font-size:22px;font-weight:400;color:var(--c-accent);line-height:1;
}
.faq-item[open] summary::after{content:"−";}
.faq-item summary:hover{color:var(--c-primary-2);}
.faq-item .faq-body{padding:0 46px 24px 0;font-size:15.5px;line-height:1.9;color:var(--c-muted);}
.faq-item .faq-body p{margin:0;color:var(--c-muted);}

/* ---------- lead form ---------- */
.lead-wrap{display:grid;grid-template-columns:1fr 1.15fr;gap:56px;align-items:start;}
.lead-intro p{color:var(--c-muted);font-size:16px;}
.lead-points{display:grid;gap:14px;margin-top:26px;}
.lead-points li{display:flex;gap:12px;align-items:flex-start;font-size:15px;color:var(--c-text);}
.lead-points i{color:var(--c-accent);margin-top:6px;font-size:13px;}
.lead-form{
  background:var(--c-surface);border:1px solid var(--c-line);
  border-radius:var(--r-card);padding:30px;box-shadow:var(--sh-1);
}
.field{margin-bottom:18px;}
.field label{display:block;font-size:14px;font-weight:600;color:var(--c-text);margin-bottom:8px;}
.field label .req{color:var(--c-danger);margin-left:3px;}
.field input,.field select,.field textarea{
  width:100%;border:1px solid var(--c-line);border-radius:var(--r-input);
  background:var(--c-bg);color:var(--c-text);font-family:inherit;font-size:15px;
  padding:0 14px;height:46px;transition:border-color .18s ease,box-shadow .18s ease,background .18s ease;
}
.field textarea{height:110px;padding:12px 14px;line-height:1.7;resize:vertical;}
.field input:focus,.field select:focus,.field textarea:focus{
  outline:none;border-color:var(--c-accent);background:#fff;box-shadow:0 0 0 3px var(--c-accent-soft);
}
.field-row{display:grid;grid-template-columns:1fr 1fr;gap:16px;}
.form-note{font-size:13px;color:var(--c-muted);margin:14px 0 0;line-height:1.7;}
.form-actions{margin-top:20px;display:flex;align-items:center;gap:16px;flex-wrap:wrap;}
.form-status{font-size:14px;margin-top:12px;display:none;}
.form-status.is-ok{display:block;color:var(--c-success);}
.form-status.is-err{display:block;color:var(--c-danger);}

/* ---------- footer ---------- */
.site-footer{
  background:var(--c-ink);color:#AFC2BE;padding-top:0;
  border-top:3px solid var(--c-accent);
}
.footer-grid{
  display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:40px;
  padding:64px 0 44px;
}
.footer-brand{display:flex;align-items:center;gap:11px;margin-bottom:16px;}
.footer-brand .brand-mark{box-shadow:none;}
.footer-brand .brand-text{color:#fff;}
.footer-brand .brand-text span{color:var(--c-accent);}
.footer-desc{font-size:14px;line-height:1.85;color:#93A8A3;max-width:320px;}
.footer-col h4{font-size:15px;color:#fff;margin-bottom:18px;font-weight:700;}
.footer-col ul{display:grid;gap:11px;}
.footer-col a{font-size:14px;color:#AFC2BE;}
.footer-col a:hover{color:var(--c-accent);}
.footer-contact{display:grid;gap:11px;font-size:14px;color:#AFC2BE;}
.footer-contact i{color:var(--c-accent);width:16px;margin-right:8px;}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.09);
  padding:20px 0 26px;display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:13px;color:#7E938E;
}
.footer-bottom a{color:#9FB4AF;}
.footer-bottom a:hover{color:var(--c-accent);}

/* ---------- mobile tabbar ---------- */
.mobile-tabbar{
  display:none;position:fixed;left:0;right:0;bottom:0;z-index:70;
  background:rgba(255,255,255,.97);backdrop-filter:blur(10px);
  border-top:1px solid var(--c-line);
  padding-bottom:env(safe-area-inset-bottom);
  box-shadow:0 -6px 20px rgba(14,42,42,.07);
}
.mobile-tabbar ul{display:grid;grid-template-columns:repeat(5,1fr);}
.mobile-tabbar a{
  display:flex;flex-direction:column;align-items:center;justify-content:center;gap:3px;
  height:62px;font-size:11.5px;color:#8A9A96;font-weight:500;
}
.mobile-tabbar a i{font-size:19px;line-height:1;}
.mobile-tabbar a.is-active{color:var(--c-primary);font-weight:700;}
.mobile-tabbar a.is-active i{color:var(--c-accent);}

/* ---------- responsive ---------- */
@media (max-width:1199px){
  .hero-copy h1{font-size:38px;}
  .news-grid{grid-template-columns:repeat(3,1fr);gap:20px;}
}
@media (max-width:1023px){
  :root{--sec-pad:68px;}
  .container{padding:0 24px;}
  .site-nav{display:none;}
  .hero-inner{grid-template-columns:1fr;gap:38px;padding:70px 0 64px;}
  .hero-copy h1{font-size:34px;}
  .hero-copy .lead{font-size:16px;}
  .metric-board{grid-template-columns:repeat(2,1fr);gap:18px;}
  .service-matrix{grid-template-columns:1fr 1fr;}
  .service-card--large{grid-row:auto;grid-column:span 2;}
  .service-card--wide{grid-column:span 2;}
  .news-grid{grid-template-columns:repeat(2,1fr);}
  .compare-grid{grid-template-columns:1fr;}
  .lead-wrap{grid-template-columns:1fr;gap:34px;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;padding:50px 0 36px;}
  .mobile-tabbar{display:block;}
  body{padding-bottom:84px;}
}
@media (max-width:767px){
  .header-inner{height:64px;gap:14px;}
  .brand-text{font-size:16px;}
  .header-actions .btn--hot{display:none;}
  h1{font-size:29px;}
  h2{font-size:24px;}
  h3{font-size:19px;}
  .hero-copy h1{font-size:29px;}
  .section-head p{font-size:15.5px;}
  .metric-value{font-size:30px;}
  .news-grid{grid-template-columns:1fr;}
  .service-matrix{grid-template-columns:1fr;}
  .service-card--large,.service-card--wide{grid-column:auto;}
  .field-row{grid-template-columns:1fr;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px;}
  .footer-desc{max-width:none;}
  .faq-item summary{font-size:16px;padding-right:38px;}
  .faq-item .faq-body{padding-right:8px;}
  .compare-list li{flex-direction:column;gap:4px;}
  .compare-list .vv{text-align:left;}
}
@media (max-width:519px){
  .container{padding:0 16px;}
  :root{--sec-pad:52px;}
  .hero-inner{padding:52px 0 52px;}
  .hero-copy h1{font-size:26px;}
  .hero-cta .btn{width:100%;}
  .news-head .btn{width:100%;justify-content:center;}
  .lead-form{padding:22px;}
  .footer-grid{grid-template-columns:1fr;}
  .footer-bottom{flex-direction:column;gap:8px;}
}
@media (prefers-reduced-motion:reduce){
  *{animation:none!important;transition:none!important;scroll-behavior:auto!important;}
}

/* roulang page: article */
:root{
  --c-ink:#0E1A18;
  --c-primary:#0E3A34;
  --c-primary-2:#12564D;
  --c-accent:#18C8B0;
  --c-hot:#FF8A3D;
  --c-bg:#F4F7F5;
  --c-surface:#FFFFFF;
  --c-surface-2:#EAF1EE;
  --c-text:#17201E;
  --c-muted:#5E6A66;
  --c-line:#D7E2DD;
  --c-success:#2BB673;
  --c-warning:#E8A23A;
  --c-danger:#D9534F;
  --r-card:16px;
  --r-btn:11px;
  --r-input:10px;
  --r-img:14px;
  --sh-1:0 8px 24px rgba(14,42,42,.08);
  --sh-2:0 14px 34px rgba(14,42,42,.14);
  --maxw:1200px;
}

*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--c-bg);
  color:var(--c-text);
  font-family:"Noto Sans SC","PingFang SC","Microsoft YaHei","Source Han Sans SC",system-ui,-apple-system,"Segoe UI",sans-serif;
  font-size:16px;
  line-height:1.8;
  -webkit-font-smoothing:antialiased;
  padding-bottom:84px;
}
img{max-width:100%;height:auto;display:block;}
a{color:var(--c-primary-2);text-decoration:none;transition:color .2s ease,border-color .2s ease,background .2s ease;}
a:hover{color:var(--c-accent);}
button,input,select,textarea{font-family:inherit;font-size:inherit;}
h1,h2,h3,h4,h5{color:var(--c-ink);font-weight:800;line-height:1.3;margin:0;}
ul,ol{padding-left:1.2em;}
:focus-visible{outline:2px solid var(--c-accent);outline-offset:2px;border-radius:4px;}

.container{width:100%;max-width:var(--maxw);margin:0 auto;padding:0 32px;}
@media (max-width:1023px){.container{padding:0 24px;}}
@media (max-width:639px){.container{padding:0 16px;}}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:13px 24px;border-radius:var(--r-btn);
  font-size:15px;font-weight:600;line-height:1;letter-spacing:.3px;
  border:1px 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(--c-primary);color:#fff;box-shadow:0 6px 18px rgba(14,58,52,.18);}
.btn--primary:hover{background:#0A2C27;color:#fff;transform:translateY(-1px);box-shadow:var(--sh-2);}
.btn--ghost{background:var(--c-surface);color:var(--c-primary);border-color:var(--c-line);}
.btn--ghost:hover{color:var(--c-primary);border-color:var(--c-accent);background:#EFFAF8;transform:translateY(-1px);}
.btn--hot{background:var(--c-hot);color:#fff;box-shadow:0 6px 18px rgba(255,138,61,.24);}
.btn--hot:hover{background:#F07A28;color:#fff;transform:translateY(-1px);}
.btn--text{background:transparent;color:var(--c-accent);padding:8px 2px;font-weight:600;}
.btn--text:hover{color:var(--c-primary);text-decoration:underline;}
.btn--sm{padding:10px 18px;font-size:14px;}
.btn--lg{padding:15px 30px;font-size:16px;}
.icon-btn{
  width:42px;height:42px;display:inline-flex;align-items:center;justify-content:center;
  border-radius:11px;border:1px solid var(--c-line);background:var(--c-surface);
  color:var(--c-primary);cursor:pointer;transition:background .2s ease,color .2s ease,border-color .2s ease;
}
.icon-btn:hover{background:#EFFAF8;color:var(--c-primary-2);border-color:var(--c-accent);}

/* ---------- 顶部导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(244,247,245,.92);
  backdrop-filter:saturate(140%) blur(10px);
  border-bottom:1px solid var(--c-line);
  transition:box-shadow .25s ease;
}
.site-header.is-scrolled{box-shadow:0 6px 20px rgba(14,42,42,.10);}
.header-inner{display:flex;align-items:center;gap:24px;height:70px;}
.brand{display:flex;align-items:center;gap:10px;flex:0 0 auto;}
.brand-mark{width:34px;height:34px;display:inline-flex;align-items:center;justify-content:center;border-radius:10px;background:var(--c-primary);flex:0 0 auto;}
.brand-mark svg{width:22px;height:22px;}
.brand-text{font-size:18px;font-weight:800;color:var(--c-ink);letter-spacing:.5px;white-space:nowrap;}
.brand-text span{color:var(--c-primary-2);}
.site-nav{display:flex;align-items:center;gap:4px;margin-left:auto;}
.site-nav a{
  position:relative;padding:10px 13px;border-radius:9px;
  font-size:15px;font-weight:500;color:var(--c-text);white-space:nowrap;
  transition:color .2s ease,background .2s ease;
}
.site-nav a:hover{color:var(--c-primary);background:var(--c-surface-2);}
.site-nav a.is-active{color:var(--c-primary);font-weight:700;}
.site-nav a.is-active::after{
  content:"";position:absolute;left:13px;right:13px;bottom:4px;height:2px;
  border-radius:2px;background:var(--c-accent);
}
.header-actions{display:flex;align-items:center;gap:10px;flex:0 0 auto;}

.search-panel{display:none;border-top:1px solid var(--c-line);background:var(--c-surface);padding:14px 0;}
.search-panel.is-open{display:block;}
.search-form{display:flex;gap:10px;}
.search-form input[type="search"]{
  flex:1;height:46px;padding:0 16px;border-radius:var(--r-input);
  border:1px solid var(--c-line);background:var(--c-bg);color:var(--c-text);
}
.search-form input[type="search"]:focus{border-color:var(--c-accent);background:#fff;outline:none;}

@media (max-width:1023px){
  .site-nav{display:none;}
  .header-inner{height:64px;}
}

/* ---------- 移动底部 Tab ---------- */
.mobile-tabbar{
  position:fixed;left:0;right:0;bottom:0;z-index:80;
  display:none;align-items:stretch;
  background:rgba(255,255,255,.96);
  border-top:1px solid var(--c-line);
  padding-bottom:env(safe-area-inset-bottom);
  box-shadow:0 -6px 22px rgba(14,42,42,.08);
}
.mobile-tabbar a{
  flex:1;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:3px;
  height:62px;font-size:11.5px;color:var(--c-muted);font-weight:500;
}
.mobile-tabbar a i{font-size:19px;}
.mobile-tabbar a.is-active{color:var(--c-primary);}
.mobile-tabbar a.is-active i{color:var(--c-accent);}
.mobile-tabbar a:hover{color:var(--c-primary);}
@media (max-width:1023px){.mobile-tabbar{display:flex;}}

/* ---------- 通用区块 ---------- */
.section{padding:84px 0;}
.section--tight{padding:56px 0;}
@media (max-width:1023px){.section{padding:64px 0;}.section--tight{padding:44px 0;}}
@media (max-width:639px){.section{padding:50px 0;}.section--tight{padding:36px 0;}}

.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;font-weight:700;letter-spacing:.14em;text-transform:uppercase;
  color:var(--c-primary-2);
}
.eyebrow::before{content:"";width:22px;height:2px;background:var(--c-accent);border-radius:2px;}
.section-title{font-size:30px;margin:12px 0 10px;}
.section-sub{color:var(--c-muted);font-size:16px;max-width:720px;margin:0;}
@media (max-width:639px){.section-title{font-size:24px;}}

/* ---------- 面包屑 ---------- */
.crumb-bar{background:var(--c-surface);border-bottom:1px solid var(--c-line);padding:14px 0;}
.crumb{display:flex;align-items:center;flex-wrap:wrap;gap:8px;font-size:13.5px;color:var(--c-muted);}
.crumb a{color:var(--c-muted);}
.crumb a:hover{color:var(--c-accent);}
.crumb .sep{color:#A9B7B1;}
.crumb .current{color:var(--c-ink);font-weight:600;}

/* ---------- 文章头 ---------- */
.article-hero{
  position:relative;overflow:hidden;
  background:
    linear-gradient(180deg,rgba(14,26,24,.90) 0%,rgba(14,58,52,.86) 100%),
    url("/assets/images/backpic/back-1.png") center/cover no-repeat;
  color:#EAF1EE;
  padding:52px 0 56px;
}
.article-hero::after{
  content:"";position:absolute;inset:0;pointer-events:none;opacity:.10;
  background-image:radial-gradient(rgba(255,255,255,.9) 1.4px,transparent 1.4px);
  background-size:26px 26px;
}
.article-hero .container{position:relative;z-index:2;}
.article-tag{
  display:inline-flex;align-items:center;gap:7px;
  padding:6px 14px;border-radius:999px;
  background:rgba(24,200,176,.16);border:1px solid rgba(24,200,176,.5);
  color:#8FF0E1;font-size:13px;font-weight:600;
}
.article-hero h1{
  color:#fff;font-size:40px;line-height:1.28;margin:18px 0 16px;max-width:960px;
  letter-spacing:.4px;
}
@media (max-width:1023px){.article-hero h1{font-size:33px;}}
@media (max-width:639px){.article-hero h1{font-size:27px;}}
.article-lead{
  max-width:820px;color:#CDE2DC;font-size:16.5px;line-height:1.95;margin:0 0 22px;
}
.article-meta{display:flex;flex-wrap:wrap;gap:10px 22px;font-size:13.5px;color:#A9CFC7;}
.article-meta span{display:inline-flex;align-items:center;gap:7px;}
.article-meta i{color:var(--c-accent);}

/* ---------- 文章主体 ---------- */
.article-wrap{padding:56px 0 72px;}
.article-grid{display:grid;grid-template-columns:minmax(0,1fr) 300px;gap:44px;align-items:start;}
@media (max-width:1023px){.article-grid{grid-template-columns:1fr;gap:32px;}}

.article-card{
  background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--r-card);
  box-shadow:var(--sh-1);padding:44px 48px;
}
@media (max-width:1023px){.article-card{padding:30px 26px;}}
@media (max-width:639px){.article-card{padding:22px 18px;}}

.article-body{max-width:800px;margin:0 auto;font-size:17px;line-height:1.95;color:#22302D;}
.article-body p{margin:0 0 1.25em;}
.article-body h2{
  position:relative;font-size:26px;line-height:1.35;margin:2em 0 .8em;padding-left:16px;
}
.article-body h2::before{
  content:"";position:absolute;left:0;top:.22em;bottom:.22em;width:5px;border-radius:3px;
  background:linear-gradient(180deg,var(--c-accent),var(--c-primary-2));
}
.article-body h3{font-size:20px;margin:1.7em 0 .7em;font-weight:700;}
.article-body h4{font-size:17.5px;margin:1.4em 0 .6em;}
.article-body ul,.article-body ol{margin:0 0 1.3em;padding-left:1.35em;}
.article-body li{margin-bottom:.7em;}
.article-body ul li::marker{color:var(--c-accent);}
.article-body ol li::marker{color:var(--c-primary-2);font-weight:700;}
.article-body blockquote{
  margin:1.5em 0;padding:18px 22px;
  background:var(--c-surface-2);border-left:4px solid var(--c-accent);border-radius:0 12px 12px 0;
  color:#2C3B37;line-height:1.9;font-size:16.5px;
}
.article-body img{border-radius:var(--r-img);margin:1.4em auto;box-shadow:var(--sh-1);}
.article-body figure{margin:1.6em 0;}
.article-body figcaption{font-size:13px;color:var(--c-muted);text-align:center;margin-top:10px;}
.article-body a{color:var(--c-primary-2);border-bottom:1px solid rgba(24,200,176,.55);}
.article-body a:hover{color:var(--c-accent);}
.article-body table{width:100%;border-collapse:collapse;margin:1.5em 0;font-size:15px;}
.article-body th,.article-body td{
  border:1px solid var(--c-line);padding:12px 14px;text-align:left;vertical-align:top;
}
.article-body th{background:var(--c-surface-2);font-weight:700;color:var(--c-ink);}
.article-body .table-scroll{overflow-x:auto;-webkit-overflow-scrolling:touch;margin:1.5em 0;}
.article-body code{
  background:var(--c-surface-2);padding:2px 7px;border-radius:6px;font-size:14.5px;
  color:var(--c-primary-2);
}
.article-body hr{border:none;border-top:1px solid var(--c-line);margin:2.2em 0;}

.article-empty{
  text-align:center;padding:64px 20px;
}
.article-empty i{font-size:44px;color:#B7C6C0;}
.article-empty h2{font-size:22px;margin:18px 0 8px;}
.article-empty p{color:var(--c-muted);margin:0 0 22px;}

/* ---------- 文章标签 ---------- */
.tag-row{display:flex;flex-wrap:wrap;gap:10px;margin-top:36px;padding-top:26px;border-top:1px solid var(--c-line);}
.tag{
  display:inline-flex;align-items:center;gap:6px;
  padding:7px 14px;border-radius:999px;font-size:13.5px;
  background:var(--c-surface-2);color:var(--c-primary-2);border:1px solid var(--c-line);
}
.tag:hover{border-color:var(--c-accent);color:var(--c-primary);background:#EFFAF8;}

/* ---------- 上下篇导航 ---------- */
.post-nav{display:grid;grid-template-columns:1fr 1fr;gap:18px;margin-top:34px;}
@media (max-width:639px){.post-nav{grid-template-columns:1fr;}}
.post-nav a{
  display:flex;align-items:center;gap:14px;
  padding:18px 20px;border-radius:14px;background:var(--c-surface);
  border:1px solid var(--c-line);box-shadow:var(--sh-1);color:var(--c-text);
}
.post-nav a:hover{box-shadow:var(--sh-2);transform:translateY(-2px);color:var(--c-primary);}
.post-nav i{color:var(--c-accent);font-size:18px;}
.post-nav .pn-label{display:block;font-size:12.5px;color:var(--c-muted);margin-bottom:2px;}
.post-nav .pn-title{font-size:15px;font-weight:700;color:var(--c-ink);}
.post-nav .pn-right{margin-left:auto;text-align:right;}

/* ---------- 侧栏 ---------- */
.side-card{
  background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--r-card);
  box-shadow:var(--sh-1);padding:24px;margin-bottom:22px;
}
.side-card h3{font-size:16.5px;margin:0 0 14px;display:flex;align-items:center;gap:9px;}
.side-card h3 i{color:var(--c-accent);}
.side-list{list-style:none;padding:0;margin:0;}
.side-list li{padding:11px 0;border-bottom:1px dashed var(--c-line);font-size:14.5px;}
.side-list li:last-child{border-bottom:none;padding-bottom:0;}
.side-list a{color:var(--c-text);display:flex;gap:9px;align-items:flex-start;}
.side-list a:hover{color:var(--c-primary);}
.side-list a i{color:var(--c-accent);font-size:12px;margin-top:7px;flex:0 0 auto;}
.side-cta{
  background:linear-gradient(160deg,var(--c-primary) 0%,var(--c-primary-2) 100%);
  color:#DCEBE7;border:none;text-align:center;
}
.side-cta h3{color:#fff;justify-content:center;}
.side-cta p{font-size:14px;color:#B8D8D1;margin:0 0 16px;line-height:1.85;}
.side-cta .btn{width:100%;margin-bottom:10px;}

/* ---------- 相关推荐 ---------- */
.news-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px;}
@media (max-width:1023px){.news-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:20px;}}
@media (max-width:639px){.news-grid{grid-template-columns:1fr;}}
.news-card{
  display:flex;flex-direction:column;overflow:hidden;
  background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--r-card);
  box-shadow:var(--sh-1);transition:transform .22s ease,box-shadow .22s ease;
}
.news-card:hover{transform:translateY(-4px);box-shadow:var(--sh-2);}
.news-thumb{aspect-ratio:16/10;overflow:hidden;background:var(--c-surface-2);}
.news-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .4s ease;}
.news-card:hover .news-thumb img{transform:scale(1.04);}
.news-body{padding:20px 20px 22px;display:flex;flex-direction:column;flex:1;}
.news-cat{
  align-self:flex-start;font-size:12.5px;font-weight:600;color:var(--c-primary-2);
  background:var(--c-surface-2);border-radius:999px;padding:4px 12px;margin-bottom:12px;
}
.news-body h3{font-size:17.5px;line-height:1.45;margin:0 0 10px;}
.news-body h3 a{color:var(--c-ink);}
.news-body h3 a:hover{color:var(--c-primary-2);}
.news-body p{font-size:14.5px;color:var(--c-muted);margin:0 0 16px;line-height:1.8;}
.news-foot{margin-top:auto;display:flex;align-items:center;justify-content:space-between;font-size:13px;color:var(--c-muted);}
.news-foot .more{color:var(--c-accent);font-weight:600;}

/* ---------- CTA 条 ---------- */
.cta-band{
  position:relative;overflow:hidden;
  background:linear-gradient(120deg,var(--c-ink) 0%,var(--c-primary) 55%,var(--c-primary-2) 100%);
  border-radius:20px;padding:48px 52px;color:#DCEBE7;
}
.cta-band::after{
  content:"";position:absolute;right:-40px;top:-40px;width:280px;height:280px;border-radius:50%;
  background:radial-gradient(circle,rgba(24,200,176,.30) 0%,rgba(24,200,176,0) 70%);
}
.cta-inner{position:relative;z-index:2;display:flex;flex-wrap:wrap;gap:28px;align-items:center;justify-content:space-between;}
.cta-band h2{color:#fff;font-size:27px;margin:0 0 10px;}
.cta-band p{margin:0;color:#B8D8D1;font-size:15.5px;max-width:620px;}
.cta-actions{display:flex;gap:12px;flex-wrap:wrap;}
@media (max-width:1023px){.cta-band{padding:36px 26px;}.cta-band h2{font-size:23px;}}

/* ---------- 页脚 ---------- */
.site-footer{
  position:relative;background:#0B1917;color:#C6D6D1;padding:64px 0 0;margin-top:0;
  border-top:3px solid var(--c-accent);
}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.3fr;gap:36px;}
@media (max-width:1023px){.footer-grid{grid-template-columns:1fr 1fr;gap:30px;}}
@media (max-width:639px){.footer-grid{grid-template-columns:1fr;gap:26px;}}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:14px;}
.footer-brand .brand-text{color:#fff;font-size:17px;}
.footer-brand .brand-text span{color:var(--c-accent);}
.footer-desc{font-size:14px;line-height:1.85;color:#93A8A3;margin:0;max-width:340px;}
.footer-col h4{color:#fff;font-size:15px;margin:0 0 16px;font-weight:700;letter-spacing:.3px;}
.footer-col ul{list-style:none;margin:0;padding:0;}
.footer-col ul li{margin-bottom:11px;}
.footer-col ul a{font-size:14px;color:#9FB5B0;}
.footer-col ul a:hover{color:var(--c-accent);}
.footer-contact{display:flex;flex-direction:column;gap:11px;font-size:14px;color:#9FB5B0;}
.footer-contact i{color:var(--c-accent);margin-right:8px;}
.footer-bottom{
  margin-top:48px;border-top:1px solid rgba(255,255,255,.10);
  padding:20px 0 28px;display:flex;flex-wrap:wrap;gap:10px 24px;
  align-items:center;justify-content:space-between;
  font-size:12.5px;color:#7E938E;
}

@media (max-width:639px){
  .article-lead{font-size:15.5px;}
  .article-body{font-size:16px;line-height:1.9;}
  .article-body h2{font-size:22px;}
}

/* roulang page: category1 */
:root{
  --c-ink:#0E1A18;
  --c-primary:#0E3A34;
  --c-primary-2:#12564D;
  --c-accent:#18C8B0;
  --c-hot:#FF8A3D;
  --c-bg:#F4F7F5;
  --c-surface:#FFFFFF;
  --c-surface-2:#EAF1EE;
  --c-text:#17201E;
  --c-muted:#5E6A66;
  --c-line:#D7E2DD;
  --c-success:#2BB673;
  --c-warning:#E8A23A;
  --c-danger:#D9534F;
  --r-card:16px;
  --r-btn:11px;
  --r-input:10px;
  --r-img:14px;
  --sh-1:0 8px 24px rgba(14,42,42,.08);
  --sh-2:0 14px 34px rgba(14,42,42,.14);
  --container:1200px;
  --nav-h:70px;
}

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

html{scroll-behavior:smooth;-webkit-text-size-adjust:100%;}

body{
  margin:0;
  padding:0 0 96px;
  font-family:"Noto Sans SC","PingFang SC","Microsoft YaHei","Source Han Sans SC",sans-serif;
  font-size:16.5px;
  line-height:1.9;
  color:var(--c-text);
  background:var(--c-bg);
  -webkit-font-smoothing:antialiased;
}

img{max-width:100%;display:block;height:auto;}
a{color:var(--c-primary-2);text-decoration:none;transition:color .2s ease,background-color .2s ease;}
a:hover{color:var(--c-accent);}
ul,ol{margin:0;padding:0;list-style:none;}
h1,h2,h3,h4{margin:0;font-weight:800;line-height:1.32;color:var(--c-ink);letter-spacing:.2px;}
p{margin:0 0 1.15em;}
p:last-child{margin-bottom:0;}
button{font-family:inherit;}
input,select,textarea{font-family:inherit;font-size:15px;}

:focus-visible{outline:2px solid var(--c-accent);outline-offset:2px;border-radius:4px;}

.container{
  width:100%;
  max-width:var(--container);
  margin:0 auto;
  padding-left:32px;
  padding-right:32px;
}

/* ---------- 顶部导航 ---------- */
.site-header{
  position:sticky;
  top:0;
  z-index:60;
  background:rgba(244,247,245,.94);
  backdrop-filter:saturate(160%) blur(10px);
  border-bottom:1px solid var(--c-line);
  transition:box-shadow .25s ease,background-color .25s ease;
}
.site-header.is-scrolled{box-shadow:var(--sh-1);background:rgba(255,255,255,.96);}
.header-inner{
  height:var(--nav-h);
  display:flex;
  align-items:center;
  gap:24px;
}
.brand{display:flex;align-items:center;gap:10px;flex:0 0 auto;}
.brand-mark{width:30px;height:30px;display:inline-flex;}
.brand-mark svg{width:100%;height:100%;}
.brand-text{
  font-size:18px;
  font-weight:800;
  color:var(--c-ink);
  letter-spacing:.5px;
  white-space:nowrap;
}
.brand-text span{color:var(--c-primary-2);}
.site-nav{
  display:flex;
  align-items:center;
  gap:6px;
  margin-left:auto;
  flex-wrap:nowrap;
}
.site-nav a{
  position:relative;
  display:inline-block;
  padding:9px 13px;
  font-size:15px;
  font-weight:500;
  color:var(--c-muted);
  border-radius:9px;
  white-space:nowrap;
}
.site-nav a:hover{color:var(--c-primary);background:var(--c-surface-2);}
.site-nav a.is-active{color:var(--c-primary);font-weight:700;background:#E3F2EE;}
.site-nav a.is-active::after{
  content:"";
  position:absolute;
  left:13px;right:13px;bottom:3px;
  height:3px;
  border-radius:999px;
  background:var(--c-accent);
}
.header-actions{display:flex;align-items:center;gap:12px;flex:0 0 auto;}
.icon-btn{
  width:42px;height:42px;
  display:inline-flex;align-items:center;justify-content:center;
  border:1px solid var(--c-line);
  border-radius:11px;
  background:var(--c-surface);
  color:var(--c-primary);
  cursor:pointer;
  transition:all .2s ease;
}
.icon-btn:hover{background:var(--c-surface-2);border-color:var(--c-accent);color:var(--c-primary-2);}

.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  padding:12px 22px;
  font-size:15px;
  font-weight:600;
  border-radius:var(--r-btn);
  border:1px solid transparent;
  cursor:pointer;
  transition:transform .18s ease,box-shadow .18s ease,background-color .18s ease,border-color .18s ease,color .18s ease;
}
.btn--sm{padding:9px 16px;font-size:14px;}
.btn--primary{background:var(--c-primary);color:#fff;box-shadow:var(--sh-1);}
.btn--primary:hover{background:#0A2C27;color:#fff;transform:translateY(-1px);box-shadow:var(--sh-2);}
.btn--hot{background:var(--c-hot);color:#3A1B00;}
.btn--hot:hover{background:#FF7A22;color:#3A1B00;transform:translateY(-1px);box-shadow:var(--sh-2);}
.btn--ghost{background:var(--c-surface);color:var(--c-primary);border-color:var(--c-primary);}
.btn--ghost:hover{background:#E6F7F3;border-color:var(--c-accent);color:var(--c-primary);transform:translateY(-1px);}
.btn--link{background:transparent;color:var(--c-accent);padding:6px 2px;font-weight:600;}
.btn--link:hover{text-decoration:underline;color:var(--c-primary-2);}
.btn--block{width:100%;}

.search-panel{
  display:none;
  border-top:1px solid var(--c-line);
  background:var(--c-surface);
  padding:16px 0;
}
.search-panel.is-open{display:block;}
.search-form{display:flex;gap:10px;}
.search-form input[type="search"]{
  flex:1;
  height:46px;
  padding:0 16px;
  border:1px solid var(--c-line);
  border-radius:var(--r-input);
  background:var(--c-bg);
  color:var(--c-text);
}
.search-form input[type="search"]:focus{border-color:var(--c-accent);background:#fff;outline:none;}

/* ---------- 面包屑 ---------- */
.breadcrumb-bar{
  background:var(--c-surface);
  border-bottom:1px solid var(--c-line);
}
.breadcrumb{
  display:flex;
  align-items:center;
  gap:8px;
  flex-wrap:wrap;
  padding:14px 0;
  font-size:13.5px;
  color:var(--c-muted);
}
.breadcrumb a{color:var(--c-muted);}
.breadcrumb a:hover{color:var(--c-primary-2);}
.breadcrumb .sep{color:#A9B7B2;}
.breadcrumb .current{color:var(--c-ink);font-weight:600;}

/* ---------- 分类页 Hero ---------- */
.cat-hero{
  position:relative;
  overflow:hidden;
  background:var(--c-ink);
  padding:76px 0 72px;
}
.cat-hero::before{
  content:"";
  position:absolute;inset:0;
  background-image:url("/assets/images/backpic/back-2.webp");
  background-size:cover;
  background-position:center;
  opacity:.34;
  transform:scale(1.02);
}
.cat-hero::after{
  content:"";
  position:absolute;inset:0;
  background:
    linear-gradient(100deg,rgba(10,26,24,.94) 0%,rgba(12,40,36,.82) 55%,rgba(10,26,24,.6) 100%);
}
.hero-dots{
  position:absolute;
  right:-40px;bottom:-60px;
  width:320px;height:320px;
  background-image:radial-gradient(rgba(24,200,176,.5) 1.6px,transparent 1.6px);
  background-size:22px 22px;
  opacity:.5;
  pointer-events:none;
}
.cat-hero .container{position:relative;z-index:2;}
.hero-chip{
  display:inline-flex;
  align-items:center;
  gap:8px;
  padding:6px 14px;
  border-radius:999px;
  background:rgba(24,200,176,.16);
  border:1px solid rgba(24,200,176,.42);
  color:#9DF3E6;
  font-size:13px;
  font-weight:600;
  letter-spacing:.6px;
  margin-bottom:20px;
}
.cat-hero h1{
  color:#fff;
  font-size:42px;
  line-height:1.26;
  max-width:800px;
  margin-bottom:20px;
}
.cat-hero h1 em{
  font-style:normal;
  color:var(--c-accent);
}
.hero-lead{
  max-width:720px;
  font-size:17px;
  line-height:1.9;
  color:#CFE4DF;
  margin-bottom:28px;
}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;}
.hero-actions .btn--ghost{background:rgba(255,255,255,.08);color:#fff;border-color:rgba(255,255,255,.45);}
.hero-actions .btn--ghost:hover{background:rgba(24,200,176,.18);border-color:var(--c-accent);color:#fff;}
.hero-facts{
  display:flex;
  flex-wrap:wrap;
  gap:26px;
  margin-top:36px;
  padding-top:26px;
  border-top:1px solid rgba(255,255,255,.16);
}
.hero-facts div{min-width:130px;}
.hero-facts strong{
  display:block;
  font-size:26px;
  font-weight:800;
  color:#fff;
  font-variant-numeric:tabular-nums;
  line-height:1.2;
}
.hero-facts span{font-size:13.5px;color:#A9C6C0;}

/* ---------- 分类页 A 版式：双栏入口导航 ---------- */
.cat-section{padding:80px 0;}
.cat-section--tight{padding:64px 0;}
.cat-layout-a{
  display:grid;
  grid-template-columns:262px minmax(0,1fr);
  gap:44px;
  align-items:start;
}
.cat-aside{
  position:sticky;
  top:calc(var(--nav-h) + 24px);
  background:var(--c-surface);
  border:1px solid var(--c-line);
  border-radius:var(--r-card);
  padding:22px 20px;
  box-shadow:var(--sh-1);
}
.cat-aside h2{
  font-size:15px;
  letter-spacing:.8px;
  color:var(--c-primary);
  padding-bottom:12px;
  margin-bottom:12px;
  border-bottom:1px solid var(--c-line);
}
.anchor-nav{display:flex;flex-direction:column;gap:2px;}
.anchor-nav a{
  display:flex;
  align-items:center;
  gap:10px;
  padding:10px 12px;
  font-size:14.5px;
  color:var(--c-muted);
  border-radius:10px;
  border-left:3px solid transparent;
}
.anchor-nav a:hover{background:var(--c-surface-2);color:var(--c-primary);}
.anchor-nav a.is-current{background:#E6F7F3;color:var(--c-primary);font-weight:700;border-left-color:var(--c-accent);}
.anchor-nav i{font-size:12px;color:var(--c-accent);}
.aside-note{
  margin-top:20px;
  padding:16px;
  border-radius:12px;
  background:var(--c-surface-2);
  font-size:13.5px;
  line-height:1.8;
  color:var(--c-muted);
}
.aside-note strong{display:block;color:var(--c-primary);font-size:14px;margin-bottom:6px;}

.cat-main{min-width:0;}
.block-head{margin-bottom:30px;}
.block-head .kicker{
  display:inline-block;
  font-size:12.5px;
  font-weight:700;
  letter-spacing:1.4px;
  color:var(--c-accent);
  text-transform:uppercase;
  margin-bottom:10px;
}
.block-head h2{font-size:30px;margin-bottom:12px;}
.block-head p{color:var(--c-muted);font-size:16px;max-width:760px;}

/* ---------- 步骤时间线 ---------- */
.timeline{
  position:relative;
  padding-left:8px;
}
.timeline::before{
  content:"";
  position:absolute;
  left:27px;top:14px;bottom:14px;
  width:2px;
  background:linear-gradient(180deg,var(--c-accent),rgba(24,200,176,.15));
  border-radius:2px;
}
.timeline-item{
  position:relative;
  display:grid;
  grid-template-columns:56px minmax(0,1fr);
  gap:22px;
  padding:0 0 26px;
}
.timeline-item:last-child{padding-bottom:0;}
.timeline-num{
  width:56px;height:56px;
  display:flex;align-items:center;justify-content:center;
  border-radius:16px;
  background:var(--c-surface);
  border:1px solid var(--c-line);
  box-shadow:var(--sh-1);
  font-size:19px;
  font-weight:800;
  color:var(--c-primary);
  font-variant-numeric:tabular-nums;
  z-index:1;
}
.timeline-item.is-active .timeline-num{
  background:var(--c-primary);
  color:#fff;
  border-color:var(--c-primary);
}
.timeline-body{
  background:var(--c-surface);
  border:1px solid var(--c-line);
  border-radius:var(--r-card);
  padding:24px 26px;
  box-shadow:var(--sh-1);
  transition:box-shadow .22s ease,transform .22s ease,border-color .22s ease;
}
.timeline-body:hover{box-shadow:var(--sh-2);transform:translateY(-2px);border-color:#C3DAD3;}
.timeline-body h3{font-size:21px;margin-bottom:10px;}
.timeline-body > p{color:var(--c-muted);font-size:15.5px;line-height:1.9;}
.tick-list{margin-top:14px;display:grid;gap:9px;}
.tick-list li{
  position:relative;
  padding-left:24px;
  font-size:15px;
  color:var(--c-text);
  line-height:1.8;
}
.tick-list li::before{
  content:"";
  position:absolute;
  left:2px;top:11px;
  width:9px;height:9px;
  border-radius:3px;
  background:var(--c-accent);
  opacity:.85;
}
.step-tag{
  display:inline-block;
  margin-bottom:12px;
  padding:3px 11px;
  border-radius:999px;
  font-size:12.5px;
  font-weight:700;
  color:var(--c-primary-2);
  background:#E6F7F3;
  border:1px solid #BFE8DF;
}

/* ---------- 横向信息卡 ---------- */
.scroll-rail{
  display:flex;
  gap:20px;
  overflow-x:auto;
  padding:6px 4px 20px;
  scroll-snap-type:x mandatory;
  -webkit-overflow-scrolling:touch;
}
.scroll-rail::-webkit-scrollbar{height:8px;}
.scroll-rail::-webkit-scrollbar-thumb{background:#C6D8D2;border-radius:999px;}
.scroll-rail::-webkit-scrollbar-track{background:var(--c-surface-2);border-radius:999px;}
.info-card{
  flex:0 0 304px;
  scroll-snap-align:start;
  background:var(--c-surface);
  border:1px solid var(--c-line);
  border-radius:var(--r-card);
  overflow:hidden;
  box-shadow:var(--sh-1);
  transition:box-shadow .22s ease,transform .22s ease;
}
.info-card:hover{box-shadow:var(--sh-2);transform:translateY(-3px);}
.info-card figure{margin:0;aspect-ratio:16/10;overflow:hidden;background:var(--c-surface-2);}
.info-card figure img{width:100%;height:100%;object-fit:cover;}
.info-card-body{padding:20px 22px 22px;}
.info-card-body h3{font-size:18px;margin-bottom:8px;}
.info-card-body p{font-size:14.5px;color:var(--c-muted);line-height:1.85;}
.card-badge{
  display:inline-flex;
  align-items:center;
  gap:6px;
  padding:3px 10px;
  border-radius:999px;
  font-size:12px;
  font-weight:700;
  margin-bottom:12px;
  background:var(--c-surface-2);
  color:var(--c-primary-2);
}
.card-badge.is-hot{background:#FFEFE3;color:#B25400;}

/* ---------- 对比条 ---------- */
.compare-strip{
  margin-top:8px;
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:22px;
}
.compare-card{
  background:var(--c-surface);
  border:1px solid var(--c-line);
  border-radius:var(--r-card);
  padding:26px 26px 22px;
  box-shadow:var(--sh-1);
}
.compare-card h3{
  font-size:19px;
  display:flex;
  align-items:center;
  gap:10px;
  margin-bottom:16px;
}
.compare-card h3 i{font-size:15px;}
.compare-card.ok h3 i{color:var(--c-success);}
.compare-card.warn h3 i{color:var(--c-warning);}
.compare-row{
  display:flex;
  justify-content:space-between;
  gap:14px;
  padding:12px 0;
  border-bottom:1px dashed var(--c-line);
  font-size:14.5px;
}
.compare-row:last-child{border-bottom:0;}
.compare-row span:first-child{color:var(--c-muted);}
.compare-row span:last-child{font-weight:700;color:var(--c-ink);font-variant-numeric:tabular-nums;}

/* ---------- FAQ ---------- */
.faq-accordion{
  border:1px solid var(--c-line);
  border-radius:var(--r-card);
  background:var(--c-surface);
  overflow:hidden;
  box-shadow:var(--sh-1);
}
.faq-item{border-bottom:1px solid var(--c-line);}
.faq-item:last-child{border-bottom:0;}
.faq-item summary{
  list-style:none;
  cursor:pointer;
  padding:20px 26px;
  font-size:16.5px;
  font-weight:700;
  color:var(--c-ink);
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
  transition:background-color .2s ease,color .2s ease;
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary:hover{background:var(--c-surface-2);color:var(--c-primary);}
.faq-item summary::after{
  content:"+";
  flex:0 0 auto;
  width:26px;height:26px;
  display:flex;align-items:center;justify-content:center;
  border-radius:8px;
  border:1px solid var(--c-line);
  color:var(--c-primary-2);
  font-size:17px;
  font-weight:700;
  transition:transform .22s ease,background-color .22s ease,color .22s ease;
}
.faq-item[open] summary{background:#E6F7F3;color:var(--c-primary);}
.faq-item[open] summary::after{
  content:"−";
  background:var(--c-primary);
  border-color:var(--c-primary);
  color:#fff;
}
.faq-answer{
  padding:0 26px 22px;
  font-size:15.5px;
  line-height:1.9;
  color:var(--c-muted);
}

/* ---------- CTA / 表单 ---------- */
.cta-band{
  position:relative;
  overflow:hidden;
  background:var(--c-primary);
  border-radius:22px;
  padding:46px 44px;
  color:#fff;
}
.cta-band::before{
  content:"";
  position:absolute;
  right:-70px;top:-70px;
  width:280px;height:280px;
  background-image:radial-gradient(rgba(24,200,176,.42) 1.6px,transparent 1.6px);
  background-size:20px 20px;
  opacity:.7;
  pointer-events:none;
}
.cta-band h2{color:#fff;font-size:29px;margin-bottom:12px;}
.cta-band p{color:#C7E2DC;font-size:16px;max-width:620px;margin-bottom:26px;}
.cta-band .hero-actions{position:relative;z-index:1;}

.lead-form-wrap{
  background:var(--c-surface);
  border:1px solid var(--c-line);
  border-radius:var(--r-card);
  box-shadow:var(--sh-1);
  padding:34px 34px 30px;
}
.lead-form-wrap h2{font-size:26px;margin-bottom:10px;}
.lead-form-wrap .form-intro{color:var(--c-muted);font-size:15.5px;margin-bottom:26px;}
.form-grid{
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:18px 22px;
}
.field{display:flex;flex-direction:column;gap:8px;}
.field--full{grid-column:1 / -1;}
.field label{font-size:14px;font-weight:600;color:var(--c-primary);}
.field input,
.field select,
.field textarea{
  width:100%;
  min-height:46px;
  padding:11px 14px;
  border:1px solid var(--c-line);
  border-radius:var(--r-input);
  background:var(--c-bg);
  color:var(--c-text);
  transition:border-color .2s ease,background-color .2s ease,box-shadow .2s ease;
}
.field textarea{min-height:118px;resize:vertical;line-height:1.8;}
.field input:focus,
.field select:focus,
.field textarea:focus{
  border-color:var(--c-accent);
  background:#fff;
  outline:none;
  box-shadow:0 0 0 3px rgba(24,200,176,.18);
}
.form-privacy{
  margin-top:18px;
  font-size:13px;
  color:var(--c-muted);
  line-height:1.75;
}
.form-actions{margin-top:22px;display:flex;align-items:center;gap:16px;flex-wrap:wrap;}
.form-hint{font-size:13px;color:var(--c-muted);}

/* ---------- 页脚 ---------- */
.site-footer{
  margin-top:0;
  background:var(--c-ink);
  color:#D7E2DD;
  border-top:3px solid var(--c-accent);
  padding:62px 0 0;
}
.footer-grid{
  display:grid;
  grid-template-columns:1.5fr 1fr 1fr 1.3fr;
  gap:38px;
  padding-bottom:40px;
}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:16px;}
.footer-brand .brand-text{color:#fff;font-size:17px;}
.footer-brand .brand-text span{color:var(--c-accent);}
.footer-desc{font-size:14px;line-height:1.9;color:#9FB5AF;max-width:340px;}
.footer-col h4{
  font-size:15px;
  color:#fff;
  margin-bottom:16px;
  font-weight:700;
}
.footer-col ul{display:grid;gap:10px;}
.footer-col ul a{font-size:14px;color:#A9C0BA;}
.footer-col ul a:hover{color:var(--c-accent);}
.footer-contact{display:grid;gap:12px;}
.footer-contact span{
  display:flex;
  align-items:flex-start;
  gap:9px;
  font-size:13.5px;
  color:#A9C0BA;
  line-height:1.7;
}
.footer-contact i{color:var(--c-accent);margin-top:3px;}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.12);
  padding:20px 0;
  display:flex;
  justify-content:space-between;
  gap:16px;
  flex-wrap:wrap;
  font-size:12.5px;
  color:#8AA39D;
}

/* ---------- 移动端底部 Tab ---------- */
.mobile-tabbar{
  display:none;
  position:fixed;
  left:0;right:0;bottom:0;
  z-index:70;
  height:62px;
  padding-bottom:env(safe-area-inset-bottom);
  background:rgba(255,255,255,.97);
  backdrop-filter:blur(10px);
  border-top:1px solid var(--c-line);
  box-shadow:0 -6px 20px rgba(14,42,42,.08);
}
.mobile-tabbar ul{
  display:flex;
  height:62px;
  align-items:center;
  justify-content:space-around;
}
.mobile-tabbar a{
  display:flex;
  flex-direction:column;
  align-items:center;
  justify-content:center;
  gap:4px;
  font-size:11.5px;
  color:#8B9995;
  padding:6px 10px;
  border-radius:10px;
}
.mobile-tabbar a i{font-size:19px;}
.mobile-tabbar a.is-active{color:var(--c-primary-2);font-weight:700;}
.mobile-tabbar a.is-active i{color:var(--c-accent);}

/* ---------- 响应式 ---------- */
@media (max-width:1279px){
  .container{padding-left:26px;padding-right:26px;}
  .cat-layout-a{grid-template-columns:236px minmax(0,1fr);gap:32px;}
}

@media (max-width:1023px){
  body{padding-bottom:96px;}
  .site-nav{display:none;}
  .mobile-tabbar{display:block;}
  .cat-hero{padding:62px 0 58px;}
  .cat-hero h1{font-size:34px;}
  .cat-section{padding:64px 0;}
  .cat-layout-a{grid-template-columns:1fr;gap:30px;}
  .cat-aside{position:static;}
  .anchor-nav{
    display:grid;
    grid-template-columns:repeat(2,minmax(0,1fr));
    gap:6px;
  }
  .footer-grid{grid-template-columns:1fr 1fr;gap:30px;}
}

@media (max-width:767px){
  body{font-size:16px;line-height:1.85;}
  .container{padding-left:16px;padding-right:16px;}
  .header-inner{gap:14px;}
  .brand-text{font-size:16.5px;}
  .header-actions .btn--hot{display:none;}
  .cat-hero{padding:52px 0 48px;}
  .cat-hero h1{font-size:28px;}
  .hero-lead{font-size:15.5px;}
  .hero-facts{gap:18px;}
  .hero-facts div{min-width:104px;}
  .hero-facts strong{font-size:22px;}
  .cat-section{padding:52px 0;}
  .block-head h2{font-size:24px;}
  .timeline-item{grid-template-columns:44px minmax(0,1fr);gap:14px;}
  .timeline-num{width:44px;height:44px;font-size:16px;border-radius:13px;}
  .timeline::before{left:21px;}
  .timeline-body{padding:20px 18px;}
  .timeline-body h3{font-size:18.5px;}
  .info-card{flex:0 0 82%;}
  .compare-strip{grid-template-columns:1fr;}
  .faq-item summary{padding:17px 18px;font-size:15.5px;}
  .faq-answer{padding:0 18px 20px;font-size:15px;}
  .cta-band{padding:32px 22px;border-radius:18px;}
  .cta-band h2{font-size:23px;}
  .lead-form-wrap{padding:24px 20px;}
  .form-grid{grid-template-columns:1fr;}
  .footer-grid{grid-template-columns:1fr;gap:26px;padding-bottom:30px;}
  .footer-bottom{flex-direction:column;gap:8px;}
}

@media (max-width:420px){
  .cat-hero h1{font-size:25px;}
  .anchor-nav{grid-template-columns:1fr;}
  .hero-actions .btn{width:100%;}
}

/* roulang page: category2 */
:root{
  --c-ink:#0E1A18;
  --c-primary:#0E3A34;
  --c-primary-2:#12564D;
  --c-accent:#18C8B0;
  --c-hot:#FF8A3D;
  --c-bg:#F4F7F5;
  --c-surface:#FFFFFF;
  --c-surface-2:#EAF1EE;
  --c-text:#17201E;
  --c-muted:#5E6A66;
  --c-line:#D7E2DD;
  --c-success:#2BB673;
  --c-warning:#E8A23A;
  --c-danger:#D9534F;
  --r-card:16px;
  --r-btn:11px;
  --r-img:14px;
  --r-pill:999px;
  --sh-1:0 8px 24px rgba(14,42,42,.08);
  --sh-2:0 14px 34px rgba(14,42,42,.14);
  --sect:88px;
  --container:1200px;
  --header-h:70px;
}

*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--c-bg);
  color:var(--c-text);
  font-family:"Noto Sans SC","PingFang SC","Microsoft YaHei","Source Han Sans SC",sans-serif;
  font-size:16px;
  line-height:1.85;
  padding-top:var(--header-h);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;height:auto;}
a{color:var(--c-primary-2);text-decoration:none;transition:color .2s ease;}
a:hover{color:var(--c-accent);}
button,input,textarea,select{font-family:inherit;font-size:inherit;}
h1,h2,h3,h4{margin:0;line-height:1.32;font-weight:800;color:var(--c-ink);letter-spacing:.2px;}
p{margin:0;}
ul,ol{margin:0;padding:0;list-style:none;}
:focus-visible{outline:2px solid var(--c-accent);outline-offset:2px;border-radius:6px;}

.container{
  width:100%;
  max-width:var(--container);
  margin:0 auto;
  padding:0 32px;
}

/* ---------- Header ---------- */
.site-header{
  position:fixed;
  top:0;left:0;right:0;
  z-index:80;
  background:rgba(244,247,245,.92);
  backdrop-filter:blur(12px);
  -webkit-backdrop-filter:blur(12px);
  border-bottom:1px solid var(--c-line);
  transition:box-shadow .25s ease,background .25s ease;
}
.site-header.is-scrolled{box-shadow:0 6px 22px rgba(14,42,42,.10);background:rgba(255,255,255,.95);}
.header-inner{
  display:flex;
  align-items:center;
  gap:26px;
  height:var(--header-h);
}
.brand{display:flex;align-items:center;gap:10px;flex:0 0 auto;}
.brand-mark{width:30px;height:30px;display:inline-flex;}
.brand-mark svg{width:30px;height:30px;display:block;}
.brand-text{
  font-size:18px;
  font-weight:800;
  color:var(--c-ink);
  letter-spacing:.5px;
  white-space:nowrap;
}
.brand-text span{color:var(--c-primary-2);}
.site-nav{
  display:flex;
  align-items:center;
  gap:4px;
  margin-left:auto;
}
.site-nav a{
  position:relative;
  padding:9px 13px;
  border-radius:10px;
  font-size:15px;
  font-weight:500;
  color:var(--c-muted);
  white-space:nowrap;
  transition:color .2s ease,background .2s ease;
}
.site-nav a:hover{color:var(--c-ink);background:var(--c-surface-2);}
.site-nav a.is-active{color:var(--c-primary);font-weight:700;background:transparent;}
.site-nav a.is-active::after{
  content:"";
  position:absolute;
  left:13px;right:13px;bottom:1px;
  height:2px;border-radius:2px;
  background:var(--c-accent);
}
.header-actions{display:flex;align-items:center;gap:12px;flex:0 0 auto;}
.icon-btn{
  width:42px;height:42px;
  display:inline-flex;align-items:center;justify-content:center;
  border:1px solid var(--c-line);
  background:var(--c-surface);
  color:var(--c-primary);
  border-radius:12px;
  cursor:pointer;
  transition:background .2s ease,border-color .2s ease,transform .2s ease;
}
.icon-btn:hover{background:var(--c-surface-2);border-color:var(--c-accent);transform:translateY(-1px);}

.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  padding:0 22px;
  height:46px;
  border-radius:var(--r-btn);
  border:1px solid transparent;
  font-size:15px;
  font-weight:600;
  cursor:pointer;
  transition:transform .18s ease,box-shadow .18s ease,background .18s ease,border-color .18s ease,color .18s ease;
}
.btn--primary{background:var(--c-primary);color:#fff;box-shadow:0 6px 18px rgba(14,58,52,.22);}
.btn--primary:hover{background:#0B2C27;color:#fff;transform:translateY(-1px);box-shadow:var(--sh-2);}
.btn--hot{background:var(--c-hot);color:#20160D;}
.btn--hot:hover{background:#F97A25;color:#20160D;transform:translateY(-1px);box-shadow:0 12px 26px rgba(255,138,61,.32);}
.btn--ghost{background:#fff;color:var(--c-primary);border-color:var(--c-line);}
.btn--ghost:hover{border-color:var(--c-accent);background:#F0FBF8;color:var(--c-primary);transform:translateY(-1px);}
.btn--light{background:rgba(255,255,255,.14);color:#fff;border-color:rgba(255,255,255,.42);}
.btn--light:hover{background:rgba(255,255,255,.24);color:#fff;transform:translateY(-1px);}
.btn--sm{height:40px;padding:0 16px;font-size:14px;}
.btn--lg{height:50px;padding:0 28px;font-size:16px;}
.btn--block{width:100%;}

.search-panel{
  max-height:0;
  overflow:hidden;
  background:var(--c-surface);
  border-top:1px solid transparent;
  transition:max-height .3s ease,border-color .3s ease;
}
.search-panel.is-open{max-height:130px;border-top-color:var(--c-line);}
.search-form{display:flex;gap:12px;padding:16px 0;}
.search-form input{
  flex:1;
  height:46px;
  padding:0 16px;
  border-radius:10px;
  border:1px solid var(--c-line);
  background:var(--c-bg);
  color:var(--c-text);
  transition:border-color .2s ease,box-shadow .2s ease;
}
.search-form input:focus{outline:none;border-color:var(--c-accent);box-shadow:0 0 0 3px rgba(24,200,176,.16);}

/* ---------- Breadcrumb ---------- */
.breadcrumb-bar{
  background:var(--c-surface);
  border-bottom:1px solid var(--c-line);
}
.breadcrumb{
  display:flex;
  align-items:center;
  flex-wrap:wrap;
  gap:8px;
  padding:14px 0;
  font-size:13.5px;
  color:var(--c-muted);
}
.breadcrumb a{color:var(--c-muted);}
.breadcrumb a:hover{color:var(--c-primary);}
.breadcrumb .sep{color:#A9B6B1;}
.breadcrumb .current{color:var(--c-ink);font-weight:600;}

/* ---------- Hero ---------- */
.category-hero{
  position:relative;
  min-height:420px;
  display:flex;
  align-items:flex-end;
  color:#fff;
  background-image:url('/assets/images/backpic/back-1.png');
  background-size:cover;
  background-position:center;
  overflow:hidden;
}
.category-hero::after{
  content:"";
  position:absolute;inset:0;
  background:linear-gradient(160deg,rgba(14,26,24,.48) 0%,rgba(14,26,24,.72) 45%,rgba(14,26,24,.92) 100%);
}
.category-hero .container{position:relative;z-index:2;padding-top:64px;padding-bottom:56px;}
.hero-eyebrow{
  display:inline-flex;
  align-items:center;
  gap:8px;
  padding:6px 14px;
  border-radius:var(--r-pill);
  background:rgba(24,200,176,.18);
  border:1px solid rgba(24,200,176,.5);
  color:#B9F4EA;
  font-size:13px;
  font-weight:600;
  letter-spacing:.6px;
  margin-bottom:20px;
}
.hero-eyebrow i{color:var(--c-accent);}
.category-hero h1{
  color:#fff;
  font-size:42px;
  line-height:1.26;
  max-width:820px;
  margin-bottom:18px;
}
.category-hero h1 em{font-style:normal;color:var(--c-accent);}
.hero-lead{
  max-width:720px;
  font-size:17px;
  line-height:1.9;
  color:rgba(255,255,255,.86);
  margin-bottom:28px;
}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-bottom:32px;}
.hero-facts{
  display:flex;
  flex-wrap:wrap;
  gap:32px;
  padding-top:22px;
  border-top:1px solid rgba(255,255,255,.18);
}
.hero-fact{min-width:120px;}
.hero-fact b{
  display:block;
  font-size:26px;
  font-weight:800;
  color:#fff;
  font-variant-numeric:tabular-nums;
  line-height:1.2;
}
.hero-fact span{font-size:13.5px;color:rgba(255,255,255,.72);}

/* ---------- Sections ---------- */
.section{padding:var(--sect) 0;}
.section--tight{padding:64px 0;}
.section--alt{background:var(--c-surface);}
.section-head{max-width:760px;margin-bottom:42px;}
.section-head .kicker{
  display:inline-flex;
  align-items:center;
  gap:8px;
  font-size:13px;
  font-weight:700;
  letter-spacing:1.4px;
  color:var(--c-primary-2);
  margin-bottom:14px;
}
.section-head .kicker::before{
  content:"";
  width:26px;height:2px;border-radius:2px;background:var(--c-accent);
}
.section-head h2{font-size:30px;margin-bottom:14px;}
.section-head p{font-size:16px;color:var(--c-muted);line-height:1.9;}

/* ---------- Filter tags ---------- */
.filter-bar{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:10px;
  padding:22px 0 0;
}
.filter-label{font-size:14px;font-weight:700;color:var(--c-ink);margin-right:4px;}
.tag-btn{
  padding:8px 18px;
  border-radius:var(--r-pill);
  border:1px solid var(--c-line);
  background:var(--c-surface);
  color:var(--c-muted);
  font-size:14px;
  font-weight:500;
  cursor:pointer;
  transition:all .2s ease;
}
.tag-btn:hover{border-color:var(--c-accent);color:var(--c-primary);}
.tag-btn.is-active{
  background:var(--c-primary);
  border-color:var(--c-primary);
  color:#fff;
  font-weight:600;
}

/* ---------- Magazine rows ---------- */
.mag-list{padding-top:48px;display:flex;flex-direction:column;gap:64px;}
.mag-row{
  display:grid;
  grid-template-columns:1.02fr 1fr;
  gap:46px;
  align-items:center;
  padding-bottom:56px;
  border-bottom:1px dashed var(--c-line);
}
.mag-row:last-child{border-bottom:none;padding-bottom:0;}
.mag-media{position:relative;}
.mag-media img{
  width:100%;
  aspect-ratio:16/10;
  object-fit:cover;
  border-radius:var(--r-img);
  box-shadow:var(--sh-1);
}
.mag-media .no-badge{
  position:absolute;
  left:16px;top:16px;
  width:44px;height:44px;
  display:flex;align-items:center;justify-content:center;
  border-radius:14px;
  background:rgba(14,58,52,.88);
  color:#fff;
  font-size:17px;
  font-weight:800;
  font-variant-numeric:tabular-nums;
  backdrop-filter:blur(6px);
}
.mag-row.is-reverse .mag-media{order:2;}
.mag-row.is-reverse .mag-text{order:1;}
.mag-kicker{
  display:inline-block;
  padding:4px 12px;
  border-radius:var(--r-pill);
  background:var(--c-surface-2);
  color:var(--c-primary-2);
  font-size:12.5px;
  font-weight:700;
  letter-spacing:.6px;
  margin-bottom:14px;
}
.mag-text h3{font-size:22px;margin-bottom:14px;}
.mag-text p{font-size:16px;color:var(--c-muted);line-height:1.9;margin-bottom:16px;}
.mag-points{display:flex;flex-direction:column;gap:10px;margin-bottom:18px;}
.mag-points li{
  position:relative;
  padding-left:26px;
  font-size:15px;
  color:var(--c-text);
  line-height:1.8;
}
.mag-points li::before{
  content:"";
  position:absolute;
  left:0;top:10px;
  width:14px;height:2px;
  border-radius:2px;
  background:var(--c-accent);
}
.mag-link{
  display:inline-flex;
  align-items:center;
  gap:8px;
  font-size:15px;
  font-weight:600;
  color:var(--c-accent);
}
.mag-link:hover{color:var(--c-primary);text-decoration:underline;}

/* ---------- Numbered steps ---------- */
.step-panel{
  background:var(--c-surface);
  border:1px solid var(--c-line);
  border-radius:var(--r-card);
  box-shadow:var(--sh-1);
  padding:44px;
  display:grid;
  grid-template-columns:1fr 1.15fr;
  gap:46px;
  align-items:start;
}
.step-panel h2{font-size:27px;margin-bottom:14px;}
.step-panel .step-intro{font-size:15.5px;color:var(--c-muted);line-height:1.9;}
.step-list{counter-reset:step;}
.step-list li{
  position:relative;
  padding:0 0 22px 56px;
  counter-increment:step;
}
.step-list li:last-child{padding-bottom:0;}
.step-list li::before{
  content:counter(step,decimal-leading-zero);
  position:absolute;
  left:0;top:0;
  width:38px;height:38px;
  display:flex;align-items:center;justify-content:center;
  border-radius:12px;
  background:var(--c-surface-2);
  border:1px solid var(--c-line);
  color:var(--c-primary);
  font-size:14px;
  font-weight:800;
  font-variant-numeric:tabular-nums;
}
.step-list li:not(:last-child)::after{
  content:"";
  position:absolute;
  left:19px;top:44px;bottom:6px;
  width:1px;
  background:var(--c-line);
}
.step-list h4{font-size:17px;margin-bottom:6px;}
.step-list p{font-size:15px;color:var(--c-muted);line-height:1.85;}

/* ---------- Tip strip ---------- */
.tip-strip{
  display:flex;
  flex-direction:column;
  gap:0;
  border:1px solid var(--c-line);
  border-radius:var(--r-card);
  overflow:hidden;
  background:var(--c-surface);
}
.tip-item{
  display:grid;
  grid-template-columns:56px 1.05fr 1.6fr;
  gap:22px;
  align-items:center;
  padding:24px 30px;
  border-bottom:1px solid var(--c-line);
  transition:background .2s ease;
}
.tip-item:last-child{border-bottom:none;}
.tip-item:hover{background:var(--c-surface-2);}
.tip-item .tip-ico{
  width:48px;height:48px;
  display:flex;align-items:center;justify-content:center;
  border-radius:14px;
  background:var(--c-surface-2);
  color:var(--c-primary-2);
  font-size:19px;
}
.tip-item h4{font-size:17px;margin-bottom:4px;}
.tip-item .tip-tag{font-size:13px;color:var(--c-accent);font-weight:700;}
.tip-item p{font-size:15px;color:var(--c-muted);line-height:1.85;}

/* ---------- FAQ ---------- */
.faq-accordion{
  border:1px solid var(--c-line);
  border-radius:var(--r-card);
  background:var(--c-surface);
  overflow:hidden;
  box-shadow:var(--sh-1);
}
.faq-accordion details{border-bottom:1px solid var(--c-line);}
.faq-accordion details:last-child{border-bottom:none;}
.faq-accordion summary{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:18px;
  padding:22px 28px;
  cursor:pointer;
  font-size:17px;
  font-weight:700;
  color:var(--c-ink);
  list-style:none;
  transition:background .2s ease;
}
.faq-accordion summary::-webkit-details-marker{display:none;}
.faq-accordion summary:hover{background:var(--c-surface-2);}
.faq-accordion summary .sign{
  flex:0 0 auto;
  width:26px;height:26px;
  display:flex;align-items:center;justify-content:center;
  border-radius:50%;
  border:1px solid var(--c-line);
  color:var(--c-primary-2);
  font-size:15px;
  font-weight:700;
  transition:transform .25s ease,background .2s ease;
}
.faq-accordion details[open] summary{background:#F7FBFA;}
.faq-accordion details[open] summary .sign{transform:rotate(45deg);background:var(--c-accent);border-color:var(--c-accent);color:#08302A;}
.faq-answer{padding:0 28px 24px;font-size:15.5px;color:var(--c-muted);line-height:1.9;}

/* ---------- CTA ---------- */
.cta-band{
  position:relative;
  border-radius:20px;
  overflow:hidden;
  padding:64px 56px;
  color:#fff;
  background-image:url('/assets/images/backpic/back-2.webp');
  background-size:cover;
  background-position:center;
  box-shadow:var(--sh-1);
}
.cta-band::after{
  content:"";
  position:absolute;inset:0;
  background:linear-gradient(120deg,rgba(10,32,29,.94) 0%,rgba(14,58,52,.86) 55%,rgba(18,86,77,.7) 100%);
}
.cta-inner{position:relative;z-index:2;display:grid;grid-template-columns:1.4fr .9fr;gap:40px;align-items:center;}
.cta-inner h2{color:#fff;font-size:29px;margin-bottom:14px;}
.cta-inner p{color:rgba(255,255,255,.82);font-size:16px;line-height:1.9;max-width:620px;}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:26px;}
.cta-side{
  background:rgba(255,255,255,.1);
  border:1px solid rgba(255,255,255,.24);
  border-radius:16px;
  padding:24px 26px;
  backdrop-filter:blur(6px);
}
.cta-side h4{color:#fff;font-size:16px;margin-bottom:14px;}
.cta-side li{
  display:flex;
  align-items:center;
  gap:10px;
  font-size:14.5px;
  color:rgba(255,255,255,.85);
  padding:8px 0;
  border-bottom:1px dashed rgba(255,255,255,.18);
}
.cta-side li:last-child{border-bottom:none;}
.cta-side i{color:var(--c-accent);}

/* ---------- Footer ---------- */
.site-footer{
  background:var(--c-ink);
  color:#CBD8D4;
  margin-top:12px;
  border-top:3px solid var(--c-accent);
}
.footer-grid{
  display:grid;
  grid-template-columns:1.6fr 1fr 1fr 1.2fr;
  gap:44px;
  padding:64px 0 44px;
}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:16px;}
.footer-brand .brand-text{color:#fff;font-size:17px;}
.footer-brand .brand-text span{color:var(--c-accent);}
.footer-desc{font-size:14px;line-height:1.9;color:#9FB0AB;max-width:340px;}
.footer-col h4{color:#fff;font-size:15px;margin-bottom:18px;font-weight:700;}
.footer-col ul li{margin-bottom:12px;}
.footer-col ul a{font-size:14px;color:#A9BAB5;}
.footer-col ul a:hover{color:var(--c-accent);}
.footer-contact{display:flex;flex-direction:column;gap:12px;font-size:14px;color:#A9BAB5;}
.footer-contact i{color:var(--c-accent);margin-right:8px;}
.footer-bottom{
  display:flex;
  justify-content:space-between;
  flex-wrap:wrap;
  gap:10px;
  padding:20px 0 26px;
  border-top:1px solid rgba(255,255,255,.12);
  font-size:12.5px;
  color:#8A9B96;
}

/* ---------- Mobile tabbar ---------- */
.mobile-tabbar{
  position:fixed;
  left:0;right:0;bottom:0;
  z-index:90;
  display:none;
  background:rgba(255,255,255,.96);
  backdrop-filter:blur(12px);
  border-top:1px solid var(--c-line);
  padding-bottom:env(safe-area-inset-bottom);
  box-shadow:0 -6px 20px rgba(14,42,42,.08);
}
.mobile-tabbar a{
  flex:1;
  height:62px;
  display:flex;
  flex-direction:column;
  align-items:center;
  justify-content:center;
  gap:4px;
  font-size:11.5px;
  color:#8A9691;
  font-weight:500;
}
.mobile-tabbar a i{font-size:19px;}
.mobile-tabbar a.is-active{color:var(--c-primary);font-weight:700;}
.mobile-tabbar a.is-active i{color:var(--c-accent);}

/* ---------- Responsive ---------- */
@media screen and (max-width:1279px){
  :root{--container:1200px;}
}
@media screen and (max-width:1023px){
  :root{--sect:68px;}
  body{padding-bottom:84px;}
  .site-nav{display:none;}
  .header-actions{margin-left:auto;}
  .mobile-tabbar{display:flex;}
  .category-hero h1{font-size:34px;}
  .mag-row{grid-template-columns:1fr;gap:26px;}
  .mag-row.is-reverse .mag-media{order:0;}
  .mag-row.is-reverse .mag-text{order:0;}
  .step-panel{grid-template-columns:1fr;padding:34px;}
  .cta-inner{grid-template-columns:1fr;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:34px;padding:52px 0 34px;}
}
@media screen and (max-width:767px){
  .container{padding:0 20px;}
  .category-hero{min-height:360px;}
  .category-hero h1{font-size:29px;}
  .hero-lead{font-size:15.5px;}
  .hero-facts{gap:22px;}
  .hero-fact b{font-size:22px;}
  .section-head h2{font-size:24px;}
  .mag-text h3{font-size:19.5px;}
  .tip-item{grid-template-columns:48px 1fr;gap:14px;padding:20px;}
  .tip-item p{grid-column:2;}
  .faq-accordion summary{font-size:16px;padding:18px 20px;}
  .faq-answer{padding:0 20px 20px;}
  .cta-band{padding:40px 26px;}
  .cta-inner h2{font-size:23px;}
  .footer-grid{grid-template-columns:1fr;gap:28px;}
  .footer-bottom{flex-direction:column;}
}
@media screen and (max-width:519px){
  .container{padding:0 16px;}
  .brand-text{font-size:16px;}
  .category-hero h1{font-size:26px;}
  .hero-actions .btn{width:100%;}
  .mag-list{gap:44px;}
  .step-panel{padding:26px 20px;}
  .footer-grid{padding:44px 0 28px;}
}

/* roulang page: category3 */
:root{
  --c-ink:#0E1A18;
  --c-primary:#0E3A34;
  --c-primary-2:#12564D;
  --c-accent:#18C8B0;
  --c-hot:#FF8A3D;
  --c-bg:#F4F7F5;
  --c-surface:#FFFFFF;
  --c-surface-2:#EAF1EE;
  --c-text:#17201E;
  --c-muted:#5E6A66;
  --c-line:#D7E2DD;
  --c-success:#2BB673;
  --c-warning:#E8A23A;
  --c-danger:#D9534F;
  --r-card:16px;
  --r-btn:11px;
  --r-input:10px;
  --r-img:14px;
  --sh-1:0 8px 24px rgba(14,42,42,.08);
  --sh-2:0 14px 34px rgba(14,42,42,.14);
  --container:1200px;
  --header-h:70px;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--c-bg);
  color:var(--c-text);
  font-family:"Noto Sans SC","PingFang SC","Microsoft YaHei","Source Han Sans SC",system-ui,-apple-system,sans-serif;
  font-size:16px;
  line-height:1.8;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;height:auto;display:block;}
a{color:var(--c-primary-2);text-decoration:none;transition:color .18s ease,opacity .18s ease;}
a:hover{color:var(--c-accent);}
button,input,select,textarea{font-family:inherit;font-size:inherit;}
h1,h2,h3,h4{margin:0 0 .6em;font-weight:800;line-height:1.3;color:var(--c-ink);letter-spacing:.2px;}
h1{font-size:42px;}
h2{font-size:30px;}
h3{font-size:22px;}
h4{font-size:17px;}
p{margin:0 0 1.15em;}
ul,ol{margin:0 0 1.15em;padding-left:1.25em;}
li{margin-bottom:.55em;}
:focus-visible{outline:2px solid var(--c-accent);outline-offset:2px;border-radius:4px;}

.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 32px;}
.section{padding:88px 0;}
.section--tight{padding:64px 0;}
.section--dark{background:var(--c-primary);color:#E6F1EE;}
.section--dark h2,.section--dark h3{color:#fff;}
.section--surface{background:var(--c-surface);}

.section-head{max-width:760px;margin-bottom:44px;}
.section-head .eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;font-weight:700;letter-spacing:.12em;
  color:var(--c-primary-2);text-transform:uppercase;margin-bottom:14px;
}
.section-head .eyebrow::before{content:"";width:26px;height:2px;background:var(--c-accent);display:block;}
.section-head p{color:var(--c-muted);font-size:16.5px;margin-bottom:0;}
.section--dark .section-head p{color:#A9C4BE;}
.section--dark .section-head .eyebrow{color:var(--c-accent);}

/* buttons */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:13px 26px;border-radius:var(--r-btn);
  font-size:15.5px;font-weight:700;line-height:1;border:1px solid transparent;
  cursor:pointer;transition:transform .18s ease,background .18s ease,box-shadow .18s ease,color .18s ease,border-color .18s ease;
  white-space:nowrap;
}
.btn--primary{background:var(--c-primary);color:#fff;box-shadow:var(--sh-1);}
.btn--primary:hover{background:#0A2B27;color:#fff;transform:translateY(-1px);box-shadow:var(--sh-2);}
.btn--ghost{background:var(--c-surface);color:var(--c-primary);border-color:var(--c-line);}
.btn--ghost:hover{border-color:var(--c-accent);background:#E8FAF6;color:var(--c-primary);transform:translateY(-1px);}
.btn--hot{background:var(--c-hot);color:#20140A;box-shadow:0 8px 20px rgba(255,138,61,.28);}
.btn--hot:hover{background:#F17B2A;color:#20140A;transform:translateY(-1px);}
.btn--sm{padding:10px 18px;font-size:14px;}
.btn--block{width:100%;}
.btn--text{background:transparent;color:var(--c-accent);padding:0;font-weight:700;}
.btn--text:hover{text-decoration:underline;}

.badge{
  display:inline-flex;align-items:center;gap:6px;
  padding:5px 13px;border-radius:999px;font-size:12.5px;font-weight:700;
  background:var(--c-surface-2);color:var(--c-primary-2);border:1px solid var(--c-line);
}
.badge--accent{background:rgba(24,200,176,.14);color:#0B6E62;border-color:rgba(24,200,176,.35);}
.badge--hot{background:rgba(255,138,61,.16);color:#A6511D;border-color:rgba(255,138,61,.35);}

/* header */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(244,247,245,.92);
  backdrop-filter:saturate(150%) blur(10px);
  border-bottom:1px solid var(--c-line);
  transition:box-shadow .2s ease;
}
.site-header.is-scrolled{box-shadow:0 6px 20px rgba(14,42,42,.09);}
.header-inner{
  height:var(--header-h);
  display:flex;align-items:center;gap:28px;
}
.brand{display:inline-flex;align-items:center;gap:10px;flex-shrink:0;}
.brand-mark{width:30px;height:30px;display:inline-flex;}
.brand-mark svg{width:100%;height:100%;}
.brand-text{font-size:18.5px;font-weight:800;color:var(--c-ink);letter-spacing:.3px;}
.brand-text span{color:var(--c-primary-2);}
.site-nav{display:flex;align-items:center;gap:6px;margin-left:auto;}
.site-nav a{
  position:relative;padding:9px 13px;border-radius:9px;
  font-size:15px;font-weight:600;color:var(--c-text);
}
.site-nav a:hover{color:var(--c-primary);background:var(--c-surface-2);}
.site-nav a.is-active{color:var(--c-primary);}
.site-nav a.is-active::after{
  content:"";position:absolute;left:13px;right:13px;bottom:2px;height:2.5px;
  border-radius:2px;background:var(--c-accent);
}
.header-actions{display:flex;align-items:center;gap:12px;flex-shrink:0;}
.icon-btn{
  width:42px;height:42px;display:inline-flex;align-items:center;justify-content:center;
  border-radius:11px;border:1px solid var(--c-line);background:var(--c-surface);
  color:var(--c-primary);cursor:pointer;transition:background .18s ease,border-color .18s ease,transform .18s ease;
}
.icon-btn:hover{background:var(--c-surface-2);border-color:var(--c-accent);transform:translateY(-1px);}
.search-panel{
  display:none;border-top:1px solid var(--c-line);background:var(--c-surface);
  padding:16px 0;
}
.search-panel.is-open{display:block;}
.search-form{display:flex;gap:12px;}
.search-form input{
  flex:1;height:46px;padding:0 16px;border-radius:var(--r-input);
  border:1px solid var(--c-line);background:var(--c-bg);color:var(--c-text);
}
.search-form input:focus{outline:none;border-color:var(--c-accent);background:#fff;box-shadow:0 0 0 3px rgba(24,200,176,.16);}

/* breadcrumb */
.crumb-bar{background:var(--c-surface);border-bottom:1px solid var(--c-line);}
.crumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13.5px;color:var(--c-muted);padding:14px 0;}
.crumb a{color:var(--c-muted);}
.crumb a:hover{color:var(--c-accent);}
.crumb .sep{color:#A9B6B1;}
.crumb .current{color:var(--c-ink);font-weight:600;}

/* hero */
.cat-hero{
  position:relative;overflow:hidden;
  background:linear-gradient(115deg,rgba(14,58,52,.94) 0%,rgba(14,58,52,.82) 52%,rgba(18,86,77,.72) 100%),
             url('/assets/images/backpic/back-2.webp') center/cover no-repeat;
  color:#EAF4F1;
  padding:84px 0 76px;
}
.cat-hero::after{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:radial-gradient(rgba(24,200,176,.30) 1.4px,transparent 1.4px);
  background-size:26px 26px;opacity:.34;
}
.cat-hero .container{position:relative;z-index:2;}
.cat-hero h1{color:#fff;font-size:40px;max-width:840px;margin-bottom:18px;}
.cat-hero h1 em{font-style:normal;color:var(--c-accent);}
.cat-hero .lede{font-size:17.5px;line-height:1.9;color:#C4DAD5;max-width:760px;margin-bottom:28px;}
.hero-tags{display:flex;flex-wrap:wrap;gap:10px;margin-bottom:30px;}
.hero-tags .badge{background:rgba(255,255,255,.10);border-color:rgba(255,255,255,.22);color:#DDF2EE;}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-bottom:34px;}
.cat-hero .btn--ghost{background:transparent;color:#EAF4F1;border-color:rgba(255,255,255,.36);}
.cat-hero .btn--ghost:hover{background:rgba(255,255,255,.12);border-color:var(--c-accent);color:#fff;}
.hero-strip{
  display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:14px;
  border-top:1px solid rgba(255,255,255,.18);padding-top:22px;max-width:820px;
}
.hero-strip .item .num{font-size:24px;font-weight:800;color:#fff;font-variant-numeric:tabular-nums;}
.hero-strip .item .lbl{font-size:13.5px;color:#A9C4BE;}

/* grid9 */
.grid9{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:22px;}
.g9-card{
  position:relative;background:var(--c-surface);border:1px solid var(--c-line);
  border-radius:var(--r-card);padding:26px 24px 24px;
  box-shadow:var(--sh-1);transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
  overflow:hidden;
}
.g9-card::before{
  content:"";position:absolute;top:0;left:0;right:0;height:3px;
  background:var(--c-accent);transform:scaleX(0);transform-origin:left;transition:transform .25s ease;
}
.g9-card:hover{transform:translateY(-4px);box-shadow:var(--sh-2);border-color:#BFD6CE;}
.g9-card:hover::before{transform:scaleX(1);}
.g9-card .idx{
  position:absolute;top:18px;right:20px;font-size:13px;font-weight:800;
  color:#B9C8C3;font-variant-numeric:tabular-nums;letter-spacing:.06em;
}
.g9-icon{
  width:52px;height:52px;border-radius:14px;display:flex;align-items:center;justify-content:center;
  background:var(--c-surface-2);color:var(--c-primary-2);font-size:21px;margin-bottom:18px;
}
.g9-card h3{font-size:19px;margin-bottom:10px;}
.g9-card p{font-size:14.8px;color:var(--c-muted);line-height:1.75;margin-bottom:14px;}
.g9-meta{display:flex;flex-wrap:wrap;gap:8px;font-size:12.5px;color:var(--c-muted);}
.g9-meta span{display:inline-flex;align-items:center;gap:5px;background:var(--c-bg);border:1px solid var(--c-line);border-radius:999px;padding:3px 10px;}

/* timeline */
.timeline{position:relative;max-width:880px;margin:0 auto;padding-left:34px;}
.timeline::before{
  content:"";position:absolute;left:8px;top:8px;bottom:8px;width:2px;
  background:linear-gradient(180deg,var(--c-accent),rgba(24,200,176,.18));
}
.tl-item{position:relative;padding:0 0 30px 26px;}
.tl-item:last-child{padding-bottom:0;}
.tl-item::before{
  content:"";position:absolute;left:-32px;top:8px;width:13px;height:13px;border-radius:50%;
  background:var(--c-surface);border:3px solid var(--c-accent);
}
.tl-item .tl-time{
  display:inline-flex;align-items:center;gap:7px;font-size:13px;font-weight:700;
  color:var(--c-primary-2);background:var(--c-surface-2);
  border-radius:999px;padding:4px 12px;margin-bottom:10px;
}
.tl-card{
  background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--r-card);
  padding:22px 24px;box-shadow:var(--sh-1);
}
.tl-card h3{font-size:19px;margin-bottom:8px;}
.tl-card p{font-size:15px;color:var(--c-muted);margin-bottom:10px;}
.tl-card ul{margin:0;padding-left:1.1em;}
.tl-card li{font-size:14.5px;color:var(--c-text);margin-bottom:.35em;}

/* steps */
.steps{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px;}
.step-card{
  background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--r-card);
  padding:30px 26px;box-shadow:var(--sh-1);position:relative;overflow:hidden;
  transition:transform .2s ease,box-shadow .2s ease;
}
.step-card:hover{transform:translateY(-4px);box-shadow:var(--sh-2);}
.step-card .step-num{
  font-size:44px;font-weight:800;line-height:1;color:transparent;
  -webkit-text-stroke:1.6px rgba(14,58,52,.28);
  font-variant-numeric:tabular-nums;margin-bottom:16px;display:block;
}
.step-card h3{font-size:20px;margin-bottom:10px;}
.step-card p{font-size:15px;color:var(--c-muted);margin-bottom:0;}
.step-card .step-hint{
  margin-top:16px;font-size:13.5px;color:var(--c-primary-2);
  border-top:1px dashed var(--c-line);padding-top:14px;display:flex;gap:8px;align-items:flex-start;
}

/* notes */
.note-board{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:18px;}
.note{
  background:var(--c-surface);border:1px solid var(--c-line);border-left:3px solid var(--c-accent);
  border-radius:14px;padding:20px 20px;box-shadow:var(--sh-1);
}
.note h4{font-size:16px;margin-bottom:8px;}
.note p{font-size:14px;color:var(--c-muted);margin-bottom:0;line-height:1.7;}

/* faq */
.faq-accordion{max-width:880px;margin:0 auto;background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--r-card);overflow:hidden;box-shadow:var(--sh-1);}
.faq-accordion details{border-bottom:1px solid var(--c-line);}
.faq-accordion details:last-child{border-bottom:none;}
.faq-accordion summary{
  list-style:none;cursor:pointer;padding:20px 26px;font-size:16.5px;font-weight:700;
  color:var(--c-ink);display:flex;justify-content:space-between;align-items:center;gap:18px;
  transition:background .18s ease;
}
.faq-accordion summary::-webkit-details-marker{display:none;}
.faq-accordion summary:hover{background:var(--c-surface-2);}
.faq-accordion summary .pm{
  flex-shrink:0;width:26px;height:26px;border-radius:50%;border:1px solid var(--c-line);
  display:inline-flex;align-items:center;justify-content:center;color:var(--c-primary-2);font-size:14px;
  transition:transform .2s ease,background .2s ease,color .2s ease;
}
.faq-accordion details[open] summary .pm{background:var(--c-accent);color:#04322C;border-color:var(--c-accent);transform:rotate(45deg);}
.faq-answer{padding:0 26px 22px;font-size:15.5px;line-height:1.85;color:var(--c-muted);}

/* compare / info band */
.figure-band{
  display:grid;grid-template-columns:1.05fr .95fr;gap:0;align-items:stretch;
  background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--r-card);
  overflow:hidden;box-shadow:var(--sh-1);
}
.figure-band .fb-media{position:relative;min-height:320px;background:var(--c-surface-2);}
.figure-band .fb-media img{width:100%;height:100%;object-fit:cover;aspect-ratio:16/10;}
.figure-band .fb-body{padding:38px 40px;display:flex;flex-direction:column;justify-content:center;}
.figure-band .fb-body h2{font-size:28px;margin-bottom:14px;}
.figure-band .fb-body p{color:var(--c-muted);font-size:15.5px;}
.fb-list{list-style:none;padding:0;margin:0 0 22px;}
.fb-list li{display:flex;gap:10px;align-items:flex-start;font-size:15px;color:var(--c-text);margin-bottom:.55em;}
.fb-list li i{color:var(--c-accent);margin-top:6px;}

/* lead form */
.lead-wrap{
  background:var(--c-surface);border:1px solid var(--c-line);border-radius:18px;
  box-shadow:var(--sh-1);padding:40px;display:grid;grid-template-columns:.9fr 1.1fr;gap:40px;
}
.lead-info h2{font-size:28px;margin-bottom:14px;}
.lead-info p{color:var(--c-muted);font-size:15.5px;}
.lead-info .contact-line{display:flex;gap:10px;align-items:center;font-size:14.5px;color:var(--c-primary-2);margin-bottom:10px;}
.lead-form .field{margin-bottom:18px;}
.lead-form label{display:block;font-size:14px;font-weight:600;color:var(--c-ink);margin-bottom:7px;}
.lead-form input,.lead-form select,.lead-form textarea{
  width:100%;height:46px;padding:0 14px;border-radius:var(--r-input);
  border:1px solid var(--c-line);background:var(--c-bg);color:var(--c-text);
  transition:border-color .18s ease,box-shadow .18s ease,background .18s ease;
}
.lead-form textarea{height:104px;padding:12px 14px;resize:vertical;line-height:1.7;}
.lead-form input:focus,.lead-form select:focus,.lead-form textarea:focus{
  outline:none;border-color:var(--c-accent);background:#fff;box-shadow:0 0 0 3px rgba(24,200,176,.16);
}
.form-row{display:grid;grid-template-columns:1fr 1fr;gap:18px;}
.privacy{font-size:13px;color:var(--c-muted);margin-top:12px;margin-bottom:0;}

/* cta band */
.cta-band{
  background:linear-gradient(120deg,var(--c-primary) 0%,var(--c-primary-2) 100%);
  color:#fff;border-radius:20px;padding:46px 44px;
  display:flex;flex-wrap:wrap;gap:26px;align-items:center;justify-content:space-between;
  position:relative;overflow:hidden;
}
.cta-band::after{
  content:"";position:absolute;right:-60px;top:-60px;width:280px;height:280px;border-radius:50%;
  background:radial-gradient(circle,rgba(24,200,176,.30),transparent 65%);
}
.cta-band h2{color:#fff;font-size:28px;margin-bottom:8px;position:relative;z-index:2;}
.cta-band p{color:#B8D3CD;margin-bottom:0;position:relative;z-index:2;}
.cta-band .cta-actions{display:flex;gap:14px;flex-wrap:wrap;position:relative;z-index:2;}

/* footer */
.site-footer{background:var(--c-ink);color:#C2D2CE;position:relative;padding-top:66px;}
.site-footer::before{content:"";position:absolute;top:0;left:0;right:0;height:2px;background:var(--c-accent);}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:36px;padding-bottom:46px;}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:16px;}
.footer-brand .brand-text{color:#fff;}
.footer-brand .brand-text span{color:var(--c-accent);}
.footer-desc{font-size:14px;line-height:1.85;color:#93A9A5;margin-bottom:0;}
.footer-col h4{color:#fff;font-size:15px;margin-bottom:16px;font-weight:700;}
.footer-col ul{list-style:none;padding:0;margin:0;}
.footer-col li{margin-bottom:10px;}
.footer-col a{color:#9FB4B0;font-size:14px;}
.footer-col a:hover{color:var(--c-accent);}
.footer-contact{display:flex;flex-direction:column;gap:10px;font-size:14px;color:#9FB4B0;}
.footer-contact i{color:var(--c-accent);margin-right:7px;}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.10);
  padding:20px 0 26px;display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;
  font-size:12.5px;color:#7F9491;
}

/* mobile tabbar */
.mobile-tabbar{
  display:none;position:fixed;left:0;right:0;bottom:0;z-index:80;
  background:rgba(255,255,255,.97);backdrop-filter:blur(10px);
  border-top:1px solid var(--c-line);
  padding-bottom:env(safe-area-inset-bottom);
  box-shadow:0 -6px 20px rgba(14,42,42,.07);
}
.mobile-tabbar .tabs-inner{display:grid;grid-template-columns:repeat(5,1fr);height:62px;}
.mobile-tabbar a{
  display:flex;flex-direction:column;align-items:center;justify-content:center;gap:3px;
  font-size:11.5px;color:#8A9793;font-weight:600;
}
.mobile-tabbar a i{font-size:19px;}
.mobile-tabbar a.is-active{color:var(--c-accent);}

/* responsive */
@media screen and (max-width:1023px){
  .container{padding:0 24px;}
  .site-nav{display:none;}
  .header-actions{margin-left:auto;}
  .header-actions .btn--hot{display:none;}
  .mobile-tabbar{display:block;}
  body{padding-bottom:78px;}
  .section{padding:70px 0;}
  .grid9{grid-template-columns:repeat(2,minmax(0,1fr));}
  .note-board{grid-template-columns:repeat(2,minmax(0,1fr));}
  .steps{grid-template-columns:1fr;}
  .figure-band{grid-template-columns:1fr;}
  .figure-band .fb-media{min-height:260px;}
  .figure-band .fb-body{padding:30px 28px;}
  .lead-wrap{grid-template-columns:1fr;padding:30px;gap:28px;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px;}
  .cat-hero{padding:64px 0 56px;}
  .cat-hero h1{font-size:32px;}
  .hero-strip{grid-template-columns:repeat(3,minmax(0,1fr));gap:10px;}
}
@media screen and (max-width:639px){
  .container{padding:0 16px;}
  body{font-size:15.5px;}
  h1{font-size:30px;}
  h2{font-size:24px;}
  h3{font-size:19px;}
  .section{padding:52px 0;}
  .section-head{margin-bottom:30px;}
  .cat-hero h1{font-size:28px;}
  .cat-hero .lede{font-size:16px;}
  .hero-actions{gap:10px;}
  .hero-actions .btn{flex:1 1 auto;justify-content:center;}
  .hero-strip{grid-template-columns:1fr 1fr;}
  .grid9{grid-template-columns:1fr;gap:16px;}
  .note-board{grid-template-columns:1fr;}
  .timeline{padding-left:26px;}
  .tl-item{padding-left:18px;}
  .tl-item::before{left:-26px;}
  .faq-accordion summary{padding:16px 18px;font-size:15.5px;}
  .faq-answer{padding:0 18px 18px;font-size:15px;}
  .cta-band{padding:32px 24px;border-radius:16px;}
  .footer-grid{grid-template-columns:1fr;gap:24px;padding-bottom:32px;}
  .footer-bottom{flex-direction:column;gap:8px;font-size:12px;}
  .form-row{grid-template-columns:1fr;}
  .search-form{flex-direction:column;}
  .g9-card{padding:22px 20px;}
}

/* roulang page: category4 */
:root{
  --c-ink:#0E1A18;
  --c-primary:#0E3A34;
  --c-primary-2:#12564D;
  --c-accent:#18C8B0;
  --c-hot:#FF8A3D;
  --c-bg:#F4F7F5;
  --c-surface:#FFFFFF;
  --c-surface-2:#EAF1EE;
  --c-text:#17201E;
  --c-muted:#5E6A66;
  --c-line:#D7E2DD;
  --c-success:#2BB673;
  --c-warning:#E8A23A;
  --c-danger:#D9534F;
  --r-card:16px;
  --r-btn:11px;
  --r-input:10px;
  --r-img:14px;
  --sh-1:0 8px 24px rgba(14,42,42,.08);
  --sh-2:0 14px 34px rgba(14,42,42,.14);
  --max-w:1200px;
  --sp-section:88px;
}

*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:"Noto Sans SC","PingFang SC","Microsoft YaHei","Source Han Sans SC",sans-serif;
  font-size:16px;
  line-height:1.8;
  color:var(--c-text);
  background:var(--c-bg);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;}
a{color:var(--c-primary-2);text-decoration:none;transition:color .2s ease;}
a:hover{color:var(--c-accent);}
button{font-family:inherit;}
h1,h2,h3,h4{color:var(--c-ink);line-height:1.3;margin:0 0 .6em;font-weight:800;letter-spacing:.2px;}
p{margin:0 0 1.1em;}
ul,ol{margin:0;padding:0;list-style:none;}
input,select,textarea{font-family:inherit;font-size:15px;}
:focus-visible{outline:2px solid var(--c-accent);outline-offset:2px;}
::selection{background:rgba(24,200,176,.28);}

.container{
  width:100%;
  max-width:var(--max-w);
  margin:0 auto;
  padding:0 32px;
}
@media (min-width:1400px){
  .container{max-width:1320px;}
}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  height:48px;
  padding:0 24px;
  border-radius:var(--r-btn);
  border:1px solid transparent;
  font-size:15px;
  font-weight:700;
  cursor:pointer;
  transition:transform .18s ease,box-shadow .18s ease,background-color .18s ease,color .18s ease,border-color .18s ease;
  white-space:nowrap;
}
.btn--primary{background:var(--c-primary);color:#fff;box-shadow:var(--sh-1);}
.btn--primary:hover{background:#0A2C27;color:#fff;transform:translateY(-1px);box-shadow:var(--sh-2);}
.btn--ghost{background:#fff;color:var(--c-primary);border-color:var(--c-line);}
.btn--ghost:hover{border-color:var(--c-accent);background:#EFFBF8;color:var(--c-primary);transform:translateY(-1px);}
.btn--hot{background:var(--c-hot);color:#3A1A00;box-shadow:0 8px 22px rgba(255,138,61,.28);}
.btn--hot:hover{background:#F97A26;color:#2E1400;transform:translateY(-1px);}
.btn--sm{height:40px;padding:0 18px;font-size:14px;border-radius:10px;}
.btn--block{width:100%;}
.btn--text{display:inline-flex;align-items:center;gap:6px;color:var(--c-accent);font-weight:700;font-size:14px;}
.btn--text:hover{color:var(--c-primary);text-decoration:underline;}

/* ============ 徽章 ============ */
.badge{
  display:inline-flex;
  align-items:center;
  gap:6px;
  height:28px;
  padding:0 12px;
  border-radius:999px;
  font-size:13px;
  font-weight:600;
  letter-spacing:.3px;
}
.badge--accent{background:rgba(24,200,176,.14);color:#0B6B60;}
.badge--hot{background:rgba(255,138,61,.16);color:#9C4A0D;}
.badge--soft{background:var(--c-surface-2);color:var(--c-muted);}

/* ============ 顶部导航 ============ */
.site-header{
  position:sticky;
  top:0;
  z-index:60;
  background:rgba(248,251,249,.92);
  backdrop-filter:blur(12px);
  border-bottom:1px solid var(--c-line);
  transition:box-shadow .25s ease,background-color .25s ease;
}
.site-header.is-scrolled{box-shadow:0 8px 26px rgba(14,42,42,.10);background:rgba(255,255,255,.96);}
.header-inner{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:24px;
  height:70px;
}
.brand{display:inline-flex;align-items:center;gap:10px;color:var(--c-ink);}
.brand:hover{color:var(--c-ink);}
.brand-mark{width:30px;height:30px;display:inline-flex;flex:0 0 30px;}
.brand-mark svg{width:100%;height:100%;}
.brand-text{font-size:19px;font-weight:800;letter-spacing:.4px;}
.brand-text span{color:var(--c-primary-2);}
.site-nav{display:flex;align-items:center;gap:6px;}
.site-nav a{
  position:relative;
  padding:8px 14px;
  border-radius:9px;
  font-size:15px;
  font-weight:500;
  color:#33403C;
  transition:background-color .2s ease,color .2s ease;
}
.site-nav a::after{
  content:"";
  position:absolute;
  left:14px;
  right:14px;
  bottom:2px;
  height:2px;
  border-radius:2px;
  background:var(--c-accent);
  transform:scaleX(0);
  transform-origin:left;
  transition:transform .22s ease;
}
.site-nav a:hover{background:var(--c-surface-2);color:var(--c-ink);}
.site-nav a:hover::after{transform:scaleX(1);}
.site-nav a.is-active{color:var(--c-ink);font-weight:700;}
.site-nav a.is-active::after{transform:scaleX(1);}
.header-actions{display:flex;align-items:center;gap:12px;}
.icon-btn{
  width:42px;height:42px;
  display:inline-flex;align-items:center;justify-content:center;
  border-radius:11px;
  border:1px solid var(--c-line);
  background:#fff;
  color:var(--c-primary);
  cursor:pointer;
  transition:background-color .2s ease,border-color .2s ease,color .2s ease;
}
.icon-btn:hover{background:#EFFBF8;border-color:var(--c-accent);color:var(--c-primary-2);}

.search-panel{
  max-height:0;
  overflow:hidden;
  background:var(--c-surface);
  border-top:1px solid transparent;
  transition:max-height .3s ease,padding .3s ease,border-color .3s ease;
}
.search-panel.is-open{max-height:120px;padding:14px 0;border-top-color:var(--c-line);}
.search-form{display:flex;gap:12px;}
.search-form input{
  flex:1;
  height:46px;
  padding:0 16px;
  border:1px solid var(--c-line);
  border-radius:var(--r-input);
  background:#fff;
  color:var(--c-text);
}
.search-form input:focus{border-color:var(--c-accent);outline:none;box-shadow:0 0 0 3px rgba(24,200,176,.16);}

/* ============ 移动端底部 Tab ============ */
.mobile-tabbar{
  display:none;
  position:fixed;
  left:0;right:0;bottom:0;
  z-index:70;
  height:62px;
  padding-bottom:env(safe-area-inset-bottom);
  background:rgba(255,255,255,.97);
  backdrop-filter:blur(10px);
  border-top:1px solid var(--c-line);
  box-shadow:0 -6px 22px rgba(14,42,42,.08);
}
.mobile-tabbar .tab-inner{display:flex;height:62px;}
.tab-item{
  flex:1;
  display:flex;
  flex-direction:column;
  align-items:center;
  justify-content:center;
  gap:3px;
  font-size:10.5px;
  color:#8A9691;
  font-weight:600;
}
.tab-item i{font-size:19px;}
.tab-item.is-active{color:var(--c-accent);}
.tab-item:hover{color:var(--c-primary-2);}

/* ============ 面包屑 ============ */
.breadcrumb{
  display:flex;
  align-items:center;
  flex-wrap:wrap;
  gap:8px;
  font-size:13.5px;
  color:var(--c-muted);
  padding:22px 0 0;
}
.breadcrumb a{color:var(--c-muted);}
.breadcrumb a:hover{color:var(--c-primary-2);}
.breadcrumb .sep{color:#A9B5B0;}
.breadcrumb .current{color:var(--c-ink);font-weight:600;}

/* ============ 分类页 Hero ============ */
.hero-cat{
  position:relative;
  padding:0 0 64px;
  background:
    radial-gradient(900px 320px at 88% -10%,rgba(24,200,176,.16),transparent 62%),
    linear-gradient(180deg,#F7FAF9 0%,var(--c-bg) 100%);
  overflow:hidden;
}
.hero-cat::before{
  content:"";
  position:absolute;
  inset:0;
  background-image:radial-gradient(rgba(14,58,52,.16) 1px,transparent 1px);
  background-size:26px 26px;
  opacity:.16;
  pointer-events:none;
  mask-image:linear-gradient(180deg,rgba(0,0,0,.9),transparent 78%);
}
.hero-grid{
  position:relative;
  display:grid;
  grid-template-columns:1.08fr .92fr;
  gap:48px;
  align-items:center;
  margin-top:26px;
}
.hero-copy .badge{margin-bottom:18px;}
.hero-copy h1{
  font-size:42px;
  line-height:1.22;
  margin:0 0 18px;
  letter-spacing:.5px;
}
.hero-sub{
  font-size:17px;
  line-height:1.85;
  color:#3D4A46;
  max-width:620px;
  margin-bottom:26px;
}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-bottom:26px;}
.hero-points{display:flex;flex-wrap:wrap;gap:10px 22px;}
.hero-points li{
  display:flex;
  align-items:center;
  gap:8px;
  font-size:14px;
  color:var(--c-muted);
  font-weight:500;
}
.hero-points i{color:var(--c-accent);font-size:13px;}
.hero-media{
  position:relative;
  border-radius:20px;
  overflow:hidden;
  box-shadow:var(--sh-2);
  border:1px solid var(--c-line);
  aspect-ratio:16/11;
  background:#0E3A34;
}
.hero-media img{width:100%;height:100%;object-fit:cover;aspect-ratio:16/11;}
.hero-media::after{
  content:"";
  position:absolute;
  inset:0;
  background:linear-gradient(180deg,rgba(14,26,24,0) 42%,rgba(14,26,24,.58) 100%);
}
.hero-media-cap{
  position:absolute;
  left:20px;right:20px;bottom:18px;
  z-index:2;
  color:#fff;
}
.hero-media-cap strong{display:block;font-size:16px;font-weight:800;margin-bottom:2px;}
.hero-media-cap span{font-size:13px;color:rgba(255,255,255,.82);}

/* ============ 指标条 ============ */
.stat-strip{
  position:relative;
  display:grid;
  grid-template-columns:repeat(4,1fr);
  gap:1px;
  margin-top:44px;
  background:var(--c-line);
  border:1px solid var(--c-line);
  border-radius:var(--r-card);
  overflow:hidden;
  box-shadow:var(--sh-1);
}
.stat-strip .stat{
  background:#fff;
  padding:20px 22px;
  position:relative;
}
.stat-strip .stat::before{
  content:"";
  position:absolute;
  left:22px;top:0;
  width:34px;height:3px;
  border-radius:0 0 3px 3px;
  background:var(--c-accent);
}
.stat-num{
  font-size:26px;
  font-weight:800;
  color:var(--c-ink);
  font-variant-numeric:tabular-nums;
  line-height:1.2;
}
.stat-num small{font-size:14px;font-weight:700;color:var(--c-muted);margin-left:3px;}
.stat-label{font-size:13.5px;color:var(--c-muted);margin-top:4px;}

/* ============ 通用板块 ============ */
.section{padding:var(--sp-section) 0;}
.section--tight{padding:64px 0;}
.section--surface{background:var(--c-surface);}
.section-head{max-width:760px;margin-bottom:42px;}
.section-head .badge{margin-bottom:14px;}
.section-head h2{font-size:30px;margin:0 0 12px;}
.section-head p{color:var(--c-muted);font-size:16px;margin:0;}
.section-head--center{margin-left:auto;margin-right:auto;text-align:center;}

/* ============ 帮助目录 + FAQ 双栏 ============ */
.help-layout{
  display:grid;
  grid-template-columns:300px 1fr;
  gap:44px;
  align-items:start;
}
.help-toc{
  position:sticky;
  top:92px;
  background:var(--c-surface);
  border:1px solid var(--c-line);
  border-radius:var(--r-card);
  padding:24px;
  box-shadow:var(--sh-1);
}
.help-toc h3{
  font-size:16px;
  margin:0 0 14px;
  padding-bottom:12px;
  border-bottom:1px solid var(--c-line);
  display:flex;
  align-items:center;
  gap:8px;
}
.help-toc h3 i{color:var(--c-accent);}
.help-toc ul{display:flex;flex-direction:column;gap:2px;}
.help-toc a{
  display:flex;
  align-items:center;
  gap:10px;
  padding:10px 12px;
  border-radius:10px;
  font-size:14.5px;
  color:#33403C;
  font-weight:500;
  transition:background-color .18s ease,color .18s ease;
}
.help-toc a .num{
  flex:0 0 22px;
  height:22px;
  display:inline-flex;
  align-items:center;
  justify-content:center;
  border-radius:7px;
  background:var(--c-surface-2);
  color:var(--c-primary-2);
  font-size:12px;
  font-weight:800;
  font-variant-numeric:tabular-nums;
}
.help-toc a:hover{background:#EFFBF8;color:var(--c-primary);}
.help-toc a:hover .num{background:rgba(24,200,176,.22);}
.help-toc-note{
  margin-top:18px;
  padding-top:16px;
  border-top:1px dashed var(--c-line);
  font-size:13px;
  color:var(--c-muted);
  line-height:1.7;
}

.faq-group{margin-bottom:34px;}
.faq-group:last-child{margin-bottom:0;}
.faq-group > h3{
  font-size:20px;
  display:flex;
  align-items:center;
  gap:10px;
  margin:0 0 6px;
  scroll-margin-top:96px;
}
.faq-group > h3::before{
  content:"";
  width:4px;height:20px;
  border-radius:3px;
  background:var(--c-accent);
}
.faq-group > p.group-desc{
  color:var(--c-muted);
  font-size:14.5px;
  margin:0 0 14px;
}
.faq-accordion{
  background:var(--c-surface);
  border:1px solid var(--c-line);
  border-radius:var(--r-card);
  overflow:hidden;
  box-shadow:var(--sh-1);
}
.faq-item{border-bottom:1px solid var(--c-line);}
.faq-item:last-child{border-bottom:none;}
.faq-item summary{
  list-style:none;
  cursor:pointer;
  display:flex;
  align-items:flex-start;
  justify-content:space-between;
  gap:16px;
  padding:18px 22px;
  transition:background-color .18s ease;
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary:hover{background:#F7FBF9;}
.faq-question{
  font-size:16px;
  font-weight:700;
  color:var(--c-ink);
  line-height:1.6;
}
.faq-item summary::after{
  content:"+";
  flex:0 0 auto;
  width:24px;height:24px;
  display:inline-flex;
  align-items:center;
  justify-content:center;
  border-radius:8px;
  background:var(--c-surface-2);
  color:var(--c-primary-2);
  font-size:16px;
  font-weight:700;
  transition:transform .2s ease,background-color .2s ease,color .2s ease;
}
.faq-item[open] summary::after{
  content:"−";
  background:var(--c-primary);
  color:#fff;
}
.faq-item[open] summary{background:#F7FBF9;}
.faq-answer{
  padding:0 22px 20px;
  font-size:15.5px;
  line-height:1.9;
  color:#3D4A46;
}
.faq-answer p{margin:0 0 .7em;}
.faq-answer p:last-child{margin-bottom:0;}
.faq-answer ul{margin:.2em 0 .8em;padding-left:2px;}
.faq-answer ul li{
  position:relative;
  padding-left:18px;
  margin-bottom:.5em;
  line-height:1.8;
}
.faq-answer ul li::before{
  content:"";
  position:absolute;
  left:2px;top:.72em;
  width:6px;height:6px;
  border-radius:50%;
  background:var(--c-accent);
}

/* ============ 速查卡 ============ */
.quick-grid{
  display:grid;
  grid-template-columns:repeat(3,1fr);
  gap:26px;
}
.quick-card{
  background:var(--c-surface);
  border:1px solid var(--c-line);
  border-radius:var(--r-card);
  overflow:hidden;
  box-shadow:var(--sh-1);
  display:flex;
  flex-direction:column;
  transition:transform .22s ease,box-shadow .22s ease,border-color .22s ease;
}
.quick-card:hover{transform:translateY(-4px);box-shadow:var(--sh-2);border-color:#BEDBD4;}
.quick-thumb{position:relative;aspect-ratio:16/10;overflow:hidden;background:var(--c-surface-2);}
.quick-thumb img{width:100%;height:100%;object-fit:cover;aspect-ratio:16/10;transition:transform .35s ease;}
.quick-card:hover .quick-thumb img{transform:scale(1.04);}
.quick-thumb .tag{
  position:absolute;
  left:14px;top:14px;
  background:rgba(14,26,24,.76);
  color:#fff;
  font-size:12.5px;
  font-weight:600;
  padding:5px 11px;
  border-radius:999px;
}
.quick-body{padding:22px;display:flex;flex-direction:column;gap:10px;flex:1;}
.quick-body h3{font-size:18px;margin:0;}
.quick-body p{font-size:14.5px;color:var(--c-muted);line-height:1.75;margin:0;flex:1;}
.quick-meta{
  display:flex;
  align-items:center;
  gap:10px;
  font-size:13px;
  color:var(--c-muted);
  padding-top:12px;
  border-top:1px dashed var(--c-line);
}
.quick-meta i{color:var(--c-accent);}

/* ============ 联系 + 表单 ============ */
.contact-wrap{
  display:grid;
  grid-template-columns:.85fr 1.15fr;
  gap:32px;
  align-items:start;
}
.contact-card{
  background:linear-gradient(160deg,var(--c-primary) 0%,#0B2A26 100%);
  border-radius:var(--r-card);
  padding:32px 28px;
  color:#E6F2EF;
  position:relative;
  overflow:hidden;
  box-shadow:var(--sh-2);
}
.contact-card::before{
  content:"";
  position:absolute;
  width:220px;height:220px;
  right:-70px;top:-70px;
  border-radius:50%;
  background:radial-gradient(circle,rgba(24,200,176,.30),transparent 70%);
}
.contact-card h3{color:#fff;font-size:21px;margin:0 0 10px;position:relative;}
.contact-card > p{font-size:14.5px;color:rgba(230,242,239,.82);position:relative;margin-bottom:22px;}
.contact-list{position:relative;display:flex;flex-direction:column;gap:14px;margin-bottom:24px;}
.contact-list li{
  display:flex;
  align-items:flex-start;
  gap:12px;
  font-size:14.5px;
  line-height:1.7;
  color:rgba(230,242,239,.92);
}
.contact-list i{
  flex:0 0 34px;
  height:34px;
  display:inline-flex;
  align-items:center;
  justify-content:center;
  border-radius:10px;
  background:rgba(24,200,176,.16);
  color:var(--c-accent);
  font-size:14px;
}
.contact-list strong{display:block;color:#fff;font-size:14.5px;}
.contact-list span.sub{font-size:13px;color:rgba(230,242,239,.72);}

.lead-form{
  background:var(--c-surface);
  border:1px solid var(--c-line);
  border-radius:var(--r-card);
  padding:32px;
  box-shadow:var(--sh-1);
  scroll-margin-top:96px;
}
.lead-form h3{font-size:21px;margin:0 0 8px;}
.lead-form .form-intro{font-size:14.5px;color:var(--c-muted);margin-bottom:22px;}
.form-grid{display:grid;grid-template-columns:1fr 1fr;gap:18px;}
.field{display:flex;flex-direction:column;gap:8px;}
.field--full{grid-column:1 / -1;}
.field label{font-size:14px;font-weight:600;color:#2A3633;}
.field label .req{color:var(--c-hot);margin-left:2px;}
.field input,.field select,.field textarea{
  height:46px;
  padding:0 14px;
  border:1px solid var(--c-line);
  border-radius:var(--r-input);
  background:#FCFDFC;
  color:var(--c-text);
  transition:border-color .18s ease,box-shadow .18s ease,background-color .18s ease;
}
.field textarea{height:120px;padding:12px 14px;resize:vertical;line-height:1.7;}
.field input:focus,.field select:focus,.field textarea:focus{
  outline:none;
  border-color:var(--c-accent);
  background:#fff;
  box-shadow:0 0 0 3px rgba(24,200,176,.16);
}
.field .hint{font-size:12.5px;color:var(--c-muted);}
.form-actions{
  margin-top:22px;
  display:flex;
  align-items:center;
  gap:16px;
  flex-wrap:wrap;
}
.form-privacy{
  font-size:12.5px;
  color:var(--c-muted);
  line-height:1.7;
  margin-top:14px;
  padding-top:14px;
  border-top:1px dashed var(--c-line);
}
.form-privacy i{color:var(--c-accent);margin-right:5px;}

/* ============ CTA 条 ============ */
.cta-band{
  background:linear-gradient(120deg,#0E3A34 0%,#12564D 62%,#106B60 100%);
  border-radius:20px;
  padding:44px 40px;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:28px;
  color:#E8F4F1;
  position:relative;
  overflow:hidden;
  box-shadow:var(--sh-2);
}
.cta-band::after{
  content:"";
  position:absolute;
  inset:0;
  background-image:radial-gradient(rgba(24,200,176,.5) 1px,transparent 1px);
  background-size:22px 22px;
  opacity:.18;
  pointer-events:none;
}
.cta-band-copy{position:relative;z-index:2;max-width:680px;}
.cta-band h2{color:#fff;font-size:26px;margin:0 0 8px;}
.cta-band p{margin:0;color:rgba(232,244,241,.85);font-size:15px;}
.cta-band-actions{position:relative;z-index:2;display:flex;gap:12px;flex-wrap:wrap;}
.cta-band .btn--ghost{background:transparent;border-color:rgba(255,255,255,.42);color:#fff;}
.cta-band .btn--ghost:hover{background:rgba(255,255,255,.12);border-color:#fff;color:#fff;}

/* ============ 页脚 ============ */
.site-footer{
  background:var(--c-ink);
  color:#C7D6D2;
  margin-top:8px;
  border-top:2px solid var(--c-accent);
  padding-top:56px;
  position:relative;
}
.footer-grid{
  display:grid;
  grid-template-columns:1.4fr .8fr .8fr 1fr;
  gap:36px;
  padding-bottom:36px;
}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:14px;}
.footer-brand .brand-mark{width:28px;height:28px;flex:0 0 28px;}
.footer-brand .brand-text{color:#fff;font-size:18px;font-weight:800;}
.footer-brand .brand-text span{color:var(--c-accent);}
.footer-desc{font-size:14px;line-height:1.85;color:rgba(199,214,210,.78);max-width:340px;margin:0;}
.footer-col h4{
  color:#fff;
  font-size:14.5px;
  margin:0 0 16px;
  letter-spacing:.4px;
}
.footer-col ul{display:flex;flex-direction:column;gap:10px;}
.footer-col ul a{font-size:14px;color:rgba(199,214,210,.8);}
.footer-col ul a:hover{color:var(--c-accent);}
.footer-contact{display:flex;flex-direction:column;gap:10px;font-size:13.5px;color:rgba(199,214,210,.8);}
.footer-contact i{color:var(--c-accent);margin-right:7px;}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.10);
  padding:18px 0 26px;
  display:flex;
  justify-content:space-between;
  gap:14px;
  flex-wrap:wrap;
  font-size:12.5px;
  color:rgba(199,214,210,.62);
}

/* ============ 响应式 ============ */
@media (max-width:1199px){
  :root{--sp-section:72px;}
  .hero-copy h1{font-size:36px;}
  .help-layout{grid-template-columns:260px 1fr;gap:32px;}
  .footer-grid{grid-template-columns:1.2fr 1fr 1fr;gap:30px;}
  .footer-grid .footer-col:last-child{grid-column:1 / -1;}
}
@media (max-width:1023px){
  .container{padding:0 24px;}
  :root{--sp-section:64px;}
  .site-nav{display:none;}
  .header-inner{height:64px;}
  .mobile-tabbar{display:block;}
  body{padding-bottom:84px;}
  .hero-grid{grid-template-columns:1fr;gap:32px;}
  .hero-copy h1{font-size:32px;}
  .hero-media{aspect-ratio:4/3;max-width:640px;}
  .hero-media img{aspect-ratio:4/3;}
  .stat-strip{grid-template-columns:repeat(2,1fr);}
  .help-layout{grid-template-columns:1fr;gap:28px;}
  .help-toc{position:static;}
  .quick-grid{grid-template-columns:repeat(2,1fr);}
  .contact-wrap{grid-template-columns:1fr;}
  .cta-band{flex-direction:column;align-items:flex-start;text-align:left;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px;}
  .footer-grid .footer-col:first-child{grid-column:1 / -1;}
  .footer-grid .footer-col:last-child{grid-column:1 / -1;}
}
@media (max-width:639px){
  .container{padding:0 16px;}
  :root{--sp-section:52px;}
  body{font-size:15.5px;}
  .brand-text{font-size:17px;}
  .header-actions .btn--hot{display:none;}
  .breadcrumb{padding-top:16px;font-size:13px;}
  .hero-cat{padding-bottom:44px;}
  .hero-copy h1{font-size:28px;}
  .hero-sub{font-size:15.5px;}
  .hero-actions .btn{flex:1 1 100%;}
  .hero-points{gap:8px 16px;}
  .section-head h2{font-size:24px;}
  .stat-strip{grid-template-columns:repeat(2,1fr);}
  .stat-strip .stat{padding:16px;}
  .stat-num{font-size:22px;}
  .quick-grid{grid-template-columns:1fr;}
  .lead-form{padding:22px;}
  .form-grid{grid-template-columns:1fr;}
  .contact-card{padding:24px 20px;}
  .cta-band{padding:30px 22px;border-radius:16px;}
  .cta-band h2{font-size:22px;}
  .cta-band-actions{width:100%;}
  .cta-band-actions .btn{flex:1 1 100%;}
  .faq-item summary{padding:16px 16px;}
  .faq-answer{padding:0 16px 18px;}
  .footer-grid{grid-template-columns:1fr;gap:24px;}
  .footer-bottom{flex-direction:column;}
}