/* roulang page: index */
:root{
  --blue:#1F5FD6;
  --blue-dark:#1749AB;
  --blue-soft:#EEF4FE;
  --blue-soft-2:#E3EDFD;
  --teal:#0FA3A3;
  --teal-light:#4FD4D4;
  --teal-soft:#E6F6F5;
  --teal-dark:#0B7C7C;
  --orange:#FF7A45;
  --ink:#12233B;
  --ink-2:#5A6B82;
  --line:#E3EBF5;
  --line-strong:#C9DCFA;
  --bg:#F6F9FD;
  --white:#FFFFFF;
  --navy:#0E2A4E;
  --r-card:14px;
  --r-btn:10px;
  --r-img:12px;
  --r-pill:999px;
  --sh-1:0 1px 2px rgba(16,42,80,.05), 0 8px 24px rgba(16,42,80,.07);
  --sh-2:0 12px 32px rgba(16,42,80,.12);
  --sec:88px;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:"PingFang SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",Roboto,"Helvetica Neue",Arial,sans-serif;
  font-size:16px;
  line-height:1.85;
  color:var(--ink);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border:0;}
a{color:var(--blue);text-decoration:none;transition:color .2s ease,background-color .2s ease,border-color .2s ease;}
a:hover{color:var(--blue-dark);}
button{font:inherit;cursor:pointer;}
h1,h2,h3,h4{margin:0;line-height:1.32;font-weight:700;letter-spacing:.2px;}
p{margin:0 0 1em;}
p:last-child{margin-bottom:0;}
ul,ol{margin:0;padding:0;list-style:none;}
strong{font-weight:700;}
:focus-visible{outline:2px solid var(--blue);outline-offset:2px;border-radius:4px;}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 20px;}
.num-font{font-family:"Inter","DIN Alternate",system-ui,-apple-system,sans-serif;font-variant-numeric:tabular-nums;}

/* ============ 顶栏 ============ */
.site-header{
  position:sticky;top:0;z-index:90;
  background:var(--white);
  border-bottom:1px solid var(--line);
  transition:box-shadow .25s ease;
}
.site-header.is-scrolled{box-shadow:0 6px 24px rgba(16,42,80,.09);}
.header-inner{display:flex;align-items:center;gap:20px;min-height:72px;}
.brand{display:flex;align-items:center;gap:10px;flex:0 0 auto;color:var(--ink);}
.brand:hover{color:var(--ink);}
.brand-mark{
  width:38px;height:38px;border-radius:11px;flex:0 0 auto;
  background:var(--blue);
  display:flex;align-items:center;justify-content:center;
  color:#fff;font-size:17px;
  box-shadow:0 6px 16px rgba(31,95,214,.28);
}
.brand-text{display:flex;flex-direction:column;line-height:1.15;}
.brand-text strong{font-size:17px;letter-spacing:.5px;}
.brand-text em{font-style:normal;font-size:10px;color:var(--ink-2);letter-spacing:2.4px;}
.main-nav{display:flex;align-items:center;gap:2px;margin-left:6px;}
.nav-link{
  position:relative;
  display:inline-flex;align-items:center;
  height:44px;padding:0 14px;
  font-size:15px;color:var(--ink);
  border-radius:8px;white-space:nowrap;
}
.nav-link:hover{color:var(--blue);background:var(--blue-soft);}
.nav-link.active{color:var(--blue);font-weight:600;}
.nav-link.active::after{
  content:"";position:absolute;left:14px;right:14px;bottom:4px;
  height:2px;border-radius:2px;background:var(--blue);
}
.header-actions{margin-left:auto;display:flex;align-items:center;gap:10px;}

/* Mega 菜单 */
.mega{position:relative;}
.mega-toggle{
  display:inline-flex;align-items:center;gap:6px;
  height:40px;padding:0 14px;
  background:var(--white);border:1px solid var(--line);
  border-radius:var(--r-btn);
  color:var(--ink);font-size:14px;font-weight:600;
  transition:border-color .2s ease,background-color .2s ease,color .2s ease;
}
.mega-toggle:hover{border-color:var(--line-strong);background:var(--blue-soft);color:var(--blue);}
.mega-toggle .caret{font-size:11px;color:var(--ink-2);}
.mega-panel{
  position:absolute;right:0;top:calc(100% + 10px);
  width:640px;
  display:grid;grid-template-columns:1.15fr 1fr;gap:0;
  background:var(--white);
  border:1px solid var(--line);
  border-radius:16px;
  box-shadow:var(--sh-2);
  padding:10px;
  opacity:0;visibility:hidden;transform:translateY(-6px);
  transition:opacity .2s ease,transform .2s ease,visibility .2s ease;
}
.mega:hover .mega-panel,.mega:focus-within .mega-panel{opacity:1;visibility:visible;transform:translateY(0);}
.mega-col{padding:14px;}
.mega-title{
  font-size:12px;font-weight:700;color:var(--ink-2);
  letter-spacing:1.6px;margin:0 0 10px;padding-left:10px;
}
.mega-link{
  display:flex;align-items:center;justify-content:space-between;gap:10px;
  min-height:48px;padding:8px 10px;border-radius:10px;
  color:var(--ink);font-size:14px;font-weight:600;
  transition:background-color .18s ease,transform .18s ease;
}
.mega-link span.sub{display:block;font-size:12px;font-weight:400;color:var(--ink-2);line-height:1.5;}
.mega-link i{color:var(--blue);font-size:12px;}
.mega-link:hover{background:#F0F5FD;color:var(--blue);transform:translateX(2px);}
.mega-card{
  display:block;height:100%;
  border-radius:12px;overflow:hidden;
  border:1px solid var(--line);
  color:var(--ink);
}
.mega-card img{width:100%;height:118px;object-fit:cover;}
.mega-card-body{padding:14px;}
.mega-card-body strong{display:block;font-size:14px;margin-bottom:4px;}
.mega-card-body small{display:block;font-size:12px;color:var(--ink-2);line-height:1.6;}
.mega-card:hover{border-color:var(--line-strong);color:var(--ink);}

/* 按钮 */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:44px;padding:0 20px;
  border-radius:var(--r-btn);
  font-size:15px;font-weight:600;
  border:1px solid transparent;
  transition:background-color .22s ease,color .22s ease,border-color .22s ease,transform .22s ease,box-shadow .22s ease;
}
.btn-primary{background:var(--blue);color:#fff;box-shadow:0 8px 20px rgba(31,95,214,.24);}
.btn-primary:hover{background:var(--blue-dark);color:#fff;transform:translateY(-1px);box-shadow:0 12px 26px rgba(31,95,214,.3);}
.btn-outline{background:var(--white);color:var(--blue);border-color:var(--blue);}
.btn-outline:hover{background:var(--blue-soft);color:var(--blue-dark);transform:translateY(-1px);}
.btn-light{background:rgba(255,255,255,.1);color:#fff;border-color:rgba(255,255,255,.42);}
.btn-light:hover{background:rgba(255,255,255,.18);color:#fff;}
.btn-sm{min-height:40px;padding:0 16px;font-size:14px;}
.text-link{display:inline-flex;align-items:center;gap:6px;font-size:15px;font-weight:600;}
.text-link i{font-size:12px;transition:transform .22s ease;}
.text-link:hover i{transform:translateX(3px);}

/* ============ 通用板块 ============ */
.section{padding:var(--sec) 0;}
.section-white{background:var(--white);}
.section-head{max-width:780px;margin-bottom:36px;}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  padding:6px 14px;border-radius:var(--r-pill);
  background:var(--teal-soft);color:var(--teal-dark);
  font-size:13px;font-weight:600;letter-spacing:.4px;
}
.section-title{font-size:30px;margin:18px 0 14px;}
.section-desc{color:var(--ink-2);font-size:16px;max-width:760px;}
.badge{
  display:inline-flex;align-items:center;gap:6px;
  padding:5px 13px;border-radius:var(--r-pill);
  background:var(--teal-soft);color:var(--teal-dark);
  font-size:12px;font-weight:600;letter-spacing:.6px;
}
.badge-blue{background:var(--blue-soft);color:var(--blue);}

/* ============ Hero ============ */
.hero{
  position:relative;overflow:hidden;
  background:var(--white);
  border-bottom:1px solid var(--line);
  padding:76px 0 84px;
}
.hero::before{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:
    linear-gradient(to right,rgba(31,95,214,.055) 1px,transparent 1px),
    linear-gradient(to bottom,rgba(31,95,214,.055) 1px,transparent 1px);
  background-size:56px 56px;
}
.hero::after{
  content:"";position:absolute;right:-160px;top:-140px;
  width:520px;height:520px;border-radius:50%;
  border:1px solid rgba(15,163,163,.16);
  box-shadow:inset 0 0 0 60px rgba(31,95,214,.035);
  pointer-events:none;
}
.hero .container{position:relative;z-index:2;}
.hero-grid{overflow:visible;}
.hero-copy{padding-bottom:8px;}
.hero h1{font-size:40px;line-height:1.24;margin:20px 0 18px;letter-spacing:.2px;}
.hero-sub{font-size:17px;color:var(--ink-2);max-width:560px;margin-bottom:26px;}
.hero-cta{display:flex;flex-wrap:wrap;gap:12px;margin-bottom:34px;}
.hero-stats{
  display:flex;align-items:stretch;
  border-top:1px solid var(--line);padding-top:22px;
}
.stat{padding-right:18px;}
.stat + .stat{border-left:1px solid var(--line);padding-left:18px;}
.stat:nth-child(1){flex:1.05;}
.stat:nth-child(2){flex:1;}
.stat:nth-child(3){flex:1.25;}
.stat .num{
  display:block;font-size:26px;font-weight:700;line-height:1.2;
  color:var(--teal);
}
.stat .lbl{display:block;font-size:13px;color:var(--ink-2);margin-top:2px;}
.hero-media{position:relative;}
.hero-media img{
  width:100%;border-radius:var(--r-img);
  box-shadow:var(--sh-2);
  border:1px solid var(--line);
}
.hero-chip{
  position:absolute;left:-18px;bottom:26px;
  display:flex;align-items:center;gap:10px;
  background:var(--white);border:1px solid var(--line);
  border-radius:12px;padding:10px 16px;box-shadow:var(--sh-1);
}
.hero-chip .dot{
  width:9px;height:9px;border-radius:50%;background:var(--teal);
  box-shadow:0 0 0 4px rgba(15,163,163,.16);
}
.hero-chip b{font-size:13px;color:var(--ink);}
.hero-chip small{display:block;font-size:11px;color:var(--ink-2);}

/* ============ 痛点 ============ */
.pain-list{border-top:1px solid var(--line);}
.pain-item{
  display:flex;gap:22px;align-items:flex-start;
  padding:26px 12px;border-bottom:1px solid var(--line);
  transition:background-color .2s ease,padding-left .2s ease;
}
.pain-item:hover{background:var(--white);padding-left:20px;}
.pain-item .idx{
  flex:0 0 auto;min-width:42px;
  font-size:20px;font-weight:700;color:var(--blue);opacity:.5;line-height:1.6;
}
.pain-item h3{font-size:18px;margin-bottom:6px;}
.pain-item p{color:var(--ink-2);font-size:15px;margin:0;}

/* ============ 方案图文 ============ */
.feature{
  display:grid;grid-template-columns:minmax(0,7fr) minmax(0,5fr);
  gap:48px;align-items:center;
}
.feature + .feature{margin-top:72px;}
.feature.rev{grid-template-columns:minmax(0,5fr) minmax(0,7fr);}
.feature.rev > .feature-media{grid-column:1;grid-row:1;}
.feature.rev > .feature-copy{grid-column:2;grid-row:1;}
.feature-media img{
  width:100%;border-radius:var(--r-img);
  box-shadow:var(--sh-1);border:1px solid var(--line);
}
.feature-copy h3{font-size:22px;margin:14px 0 12px;}
.feature-copy p{color:var(--ink-2);font-size:15.5px;}
.feature-points{margin:18px 0 20px;}
.feature-points li{
  display:flex;gap:10px;align-items:flex-start;
  padding:7px 0;font-size:15px;line-height:1.7;
}
.feature-points li::before{
  content:"";flex:0 0 auto;width:8px;height:8px;border-radius:50%;
  background:var(--teal);margin-top:10px;
}

/* ============ 数据带 ============ */
.databand{background:var(--navy);color:#fff;padding:58px 0;}
.databand-head{margin-bottom:34px;}
.databand-head h2{font-size:26px;color:#fff;}
.databand-head p{color:rgba(255,255,255,.66);font-size:14px;margin:8px 0 0;}
.databand-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));}
.databand-item{padding:0 26px;border-left:1px solid rgba(255,255,255,.14);}
.databand-item:first-child{border-left:0;padding-left:0;}
.databand-item .num{
  font-size:36px;font-weight:700;line-height:1.15;color:var(--teal-light);
  letter-spacing:-.5px;
}
.databand-item .lbl{font-size:13px;color:rgba(255,255,255,.68);margin-top:8px;line-height:1.6;}

/* ============ 客户证言 ============ */
.quotes{display:grid;grid-template-columns:1fr 1fr;gap:24px;align-items:start;}
.quote{
  background:var(--white);border:1px solid var(--line);
  border-radius:var(--r-card);padding:30px 28px 26px;
  box-shadow:var(--sh-1);position:relative;
  transition:transform .25s ease,box-shadow .25s ease,border-color .25s ease;
}
.quote:hover{transform:translateY(-2px);box-shadow:var(--sh-2);border-color:var(--line-strong);}
.quote:nth-child(2){margin-top:44px;}
.quote .mark{
  font-family:Georgia,"Times New Roman",serif;
  font-size:56px;line-height:.7;color:var(--blue-soft-2);
  display:block;margin-bottom:12px;
}
.quote p{font-size:16px;color:var(--ink);min-height:56px;}
.quote-foot{display:flex;align-items:center;gap:12px;margin-top:20px;padding-top:18px;border-top:1px solid var(--line);}
.avatar{
  width:42px;height:42px;flex:0 0 auto;border-radius:50%;
  background:var(--blue-soft);color:var(--blue);
  display:flex;align-items:center;justify-content:center;
  font-size:15px;font-weight:700;
}
.quote-foot b{display:block;font-size:14px;}
.quote-foot small{display:block;font-size:12.5px;color:var(--ink-2);}

/* ============ 最新信息 ============ */
.filter-tabs{display:flex;flex-wrap:wrap;gap:10px;margin-bottom:30px;}
.filter-tab{
  padding:8px 16px;border-radius:var(--r-pill);
  border:1px solid var(--line);background:var(--white);
  font-size:14px;color:var(--ink-2);
  transition:all .2s ease;
}
.filter-tab:hover{border-color:var(--line-strong);color:var(--blue);}
.filter-tab.active{background:var(--blue);border-color:var(--blue);color:#fff;}
.post-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px;}
.post-card{
  display:flex;flex-direction:column;
  background:var(--white);
  border:1px solid var(--line);border-radius:var(--r-card);
  overflow:hidden;color:var(--ink);
  box-shadow:var(--sh-1);
  transition:transform .25s ease,box-shadow .25s ease,border-color .25s ease;
}
.post-card:hover{
  transform:translateY(-2px);box-shadow:var(--sh-2);
  border-color:var(--line-strong);color:var(--ink);
}
.post-thumb{aspect-ratio:16/10;overflow:hidden;background:var(--blue-soft);}
.post-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .45s ease;}
.post-card:hover .post-thumb img{transform:scale(1.05);}
.post-body{padding:20px;display:flex;flex-direction:column;gap:10px;flex:1;}
.post-body h3{
  font-size:17px;line-height:1.52;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.post-body p{
  font-size:14px;color:var(--ink-2);line-height:1.7;margin:0;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.post-meta{
  margin-top:auto;padding-top:14px;border-top:1px solid var(--line);
  display:flex;align-items:center;justify-content:space-between;gap:10px;
  font-size:13px;color:var(--ink-2);
}
.post-meta .go{display:inline-flex;align-items:center;gap:6px;color:var(--blue);font-weight:600;}
.post-card:hover .post-meta .go i{transform:translateX(3px);}
.post-meta .go i{transition:transform .22s ease;font-size:11px;}
.list-more{margin-top:38px;text-align:center;}
.empty-state{
  min-height:220px;
  display:flex;flex-direction:column;align-items:center;justify-content:center;gap:14px;
  background:var(--white);border:1px dashed var(--line-strong);
  border-radius:var(--r-card);text-align:center;padding:32px;
  color:var(--ink-2);font-size:15px;
}
.empty-state i{font-size:30px;color:var(--line-strong);}

/* ============ FAQ ============ */
.faq-list{max-width:880px;border-top:1px solid var(--line);}
.faq-item{border-bottom:1px solid var(--line);transition:background-color .2s ease;}
.faq-item summary{
  min-height:48px;
  display:flex;align-items:center;justify-content:space-between;gap:18px;
  padding:18px 12px;
  font-size:17px;font-weight:600;color:var(--ink);
  cursor:pointer;list-style:none;
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary:hover{color:var(--blue);}
.faq-item[open]{background:var(--bg);}
.faq-icon{position:relative;width:20px;height:20px;flex:0 0 auto;}
.faq-icon::before,.faq-icon::after{
  content:"";position:absolute;background:var(--blue);border-radius:2px;
  transition:transform .25s ease;
}
.faq-icon::before{left:0;top:9px;width:20px;height:2px;}
.faq-icon::after{left:9px;top:0;width:2px;height:20px;}
.faq-item[open] .faq-icon::after{transform:scaleY(0);}
.faq-answer{padding:0 12px 22px;color:var(--ink-2);font-size:15px;max-width:820px;}

/* ============ 底部 CTA ============ */
.cta-section{padding:0 0 var(--sec);}
.cta-box{
  position:relative;overflow:hidden;
  background:var(--white);
  border:1px solid var(--line-strong);
  border-radius:18px;
  padding:52px 48px;
  display:flex;align-items:center;justify-content:space-between;gap:36px;
  box-shadow:var(--sh-1);
}
.cta-box::before{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:
    linear-gradient(to right,rgba(31,95,214,.05) 1px,transparent 1px),
    linear-gradient(to bottom,rgba(31,95,214,.05) 1px,transparent 1px);
  background-size:44px 44px;
  opacity:.9;
}
.cta-box > *{position:relative;z-index:1;}
.cta-box h2{font-size:28px;margin:14px 0 12px;}
.cta-box p{color:var(--ink-2);margin:0;max-width:600px;}
.cta-actions{display:flex;flex-direction:column;gap:14px;align-items:flex-start;flex:0 0 auto;}
.cta-phone{display:inline-flex;align-items:center;gap:8px;font-size:15px;font-weight:700;color:var(--ink);}
.cta-phone i{color:var(--orange);}

/* ============ 页脚 ============ */
.site-footer{background:var(--navy);color:rgba(255,255,255,.78);padding:66px 0 0;font-size:14px;}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.25fr;gap:40px;}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:16px;color:#fff;}
.footer-brand .brand-mark{box-shadow:none;background:rgba(255,255,255,.14);}
.footer-brand strong{font-size:16px;}
.site-footer h4{color:#fff;font-size:15px;margin-bottom:16px;letter-spacing:.6px;}
.site-footer p{color:rgba(255,255,255,.66);line-height:1.8;margin:0 0 10px;}
.footer-links li{margin-bottom:2px;}
.footer-links a{
  display:inline-flex;align-items:center;min-height:38px;
  color:rgba(255,255,255,.72);font-size:14px;
}
.footer-links a:hover{color:#fff;}
.footer-contact li{display:flex;gap:10px;align-items:flex-start;padding:6px 0;color:rgba(255,255,255,.72);line-height:1.7;}
.footer-contact i{color:var(--teal-light);margin-top:6px;width:16px;flex:0 0 auto;}
.footer-bottom{
  margin-top:52px;border-top:1px solid rgba(255,255,255,.12);
  padding:20px 0;display:flex;flex-wrap:wrap;gap:12px;
  align-items:center;justify-content:space-between;
  font-size:13px;color:rgba(255,255,255,.52);
}
.footer-bottom a{color:rgba(255,255,255,.62);}
.footer-bottom a:hover{color:#fff;}

/* ============ 响应式 ============ */
@media (max-width:1024px){
  :root{--sec:64px;}
  .hero{padding:56px 0 64px;}
  .hero h1{font-size:34px;}
  .hero-media{margin-top:36px;}
  .hero-chip{left:16px;bottom:16px;}
  .feature,.feature.rev{grid-template-columns:minmax(0,1fr);gap:30px;}
  .feature.rev > .feature-media{grid-column:1;grid-row:auto;}
  .feature.rev > .feature-copy{grid-column:1;grid-row:auto;}
  .feature + .feature{margin-top:56px;}
  .post-grid{grid-template-columns:repeat(2,minmax(0,1fr));}
  .databand-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:34px 0;}
  .databand-item:nth-child(3){border-left:0;padding-left:0;}
  .quotes{grid-template-columns:1fr;}
  .quote:nth-child(2){margin-top:0;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:36px;}
  .mega-panel,.mega-toggle{display:none;}
  .cta-box{flex-direction:column;align-items:flex-start;padding:40px 32px;}
}
@media (max-width:768px){
  :root{--sec:56px;}
  .container{padding:0 16px;}
  .header-inner{flex-wrap:wrap;row-gap:2px;min-height:auto;padding-top:12px;padding-bottom:6px;gap:12px;}
  .brand-text strong{font-size:16px;}
  .main-nav{
    order:3;flex:1 0 100%;margin-left:0;
    overflow-x:auto;white-space:nowrap;
    padding:2px 0 8px;
    -webkit-overflow-scrolling:touch;
  }
  .main-nav::-webkit-scrollbar{height:0;}
  .nav-link{height:38px;padding:0 10px;font-size:14px;border-radius:8px;}
  .nav-link.active::after{left:10px;right:10px;bottom:2px;}
  .header-actions .btn-sm{min-height:36px;padding:0 12px;font-size:13px;}
  .hero{padding:44px 0 52px;}
  .hero h1{font-size:28px;}
  .hero-sub{font-size:15.5px;}
  .hero-cta .btn{flex:1 1 auto;}
  .hero-stats{flex-direction:column;gap:16px;}
  .stat{padding:0;border-left:0!important;padding-left:0!important;}
  .stat + .stat{border-top:1px solid var(--line);padding-top:14px;}
  .section-title{font-size:24px;}
  .databand{padding:46px 0;}
  .databand-head h2{font-size:22px;}
  .databand-grid{grid-template-columns:1fr;gap:26px;}
  .databand-item{padding:0;border-left:0!important;border-top:1px solid rgba(255,255,255,.14);padding-top:20px;}
  .databand-item:first-child{border-top:0;padding-top:0;}
  .quote{padding:24px 20px;}
  .faq-item summary{font-size:15.5px;padding:16px 8px;}
  .cta-box{padding:34px 22px;border-radius:16px;}
  .cta-box h2{font-size:23px;}
  .footer-grid{grid-template-columns:1fr;gap:32px;}
  .footer-bottom{flex-direction:column;align-items:flex-start;gap:10px;}
}
@media (max-width:520px){
  .post-grid{grid-template-columns:1fr;}
  .hero h1{font-size:25px;}
  .stat .num{font-size:23px;}
  .databand-item .num{font-size:30px;}
  .pain-item{gap:14px;padding:22px 6px;}
  .pain-item .idx{min-width:34px;font-size:18px;}
  .hero-chip{display:none;}
}

/* roulang page: article */
:root{
  --blue:#1F5FD6;
  --blue-dark:#1A52B8;
  --blue-soft:#EEF4FE;
  --blue-hover:#E3EDFD;
  --blue-line:#C9DCFA;
  --teal:#0FA3A3;
  --teal-soft:#E6F6F5;
  --teal-deep:#0B7C7C;
  --orange:#FF7A45;
  --navy:#0E2A4E;
  --text:#12233B;
  --muted:#5A6B82;
  --line:#E3EBF5;
  --bg:#F6F9FD;
  --white:#FFFFFF;
  --r-card:14px;
  --r-btn:10px;
  --r-img:12px;
  --r-pill:999px;
  --sh-1:0 1px 2px rgba(16,42,80,.05), 0 8px 24px rgba(16,42,80,.07);
  --sh-2:0 12px 32px rgba(16,42,80,.12);
  --sec-desktop:88px;
  --sec-tablet:64px;
  --sec-mobile:56px;
  --font:"PingFang SC","Microsoft YaHei","Hiragino Sans GB",system-ui,-apple-system,"Segoe UI",Arial,sans-serif;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;}
body{
  margin:0;
  font-family:var(--font);
  font-size:16px;
  line-height:1.85;
  color:var(--text);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border-radius:var(--r-img);}
a{color:var(--blue);text-decoration:none;transition:color .2s ease, background-color .2s ease, border-color .2s ease, transform .2s ease;}
a:hover{color:var(--blue-dark);}
button,input,textarea,select{font-family:inherit;font-size:inherit;color:inherit;}
h1,h2,h3,h4,h5{margin:0;font-weight:700;line-height:1.35;color:var(--text);letter-spacing:.2px;}
p{margin:0 0 1em;}
ul,ol{margin:0;padding:0;list-style:none;}
:focus-visible{outline:2px solid var(--blue);outline-offset:2px;}

.container{
  width:100%;
  max-width:1200px;
  margin:0 auto;
  padding:0 20px;
}
.section{padding:var(--sec-desktop) 0;}
.section-head{margin-bottom:32px;max-width:820px;}
.section-head .eyebrow{
  display:inline-block;
  font-size:13px;
  letter-spacing:.14em;
  color:var(--teal-deep);
  background:var(--teal-soft);
  border-radius:var(--r-pill);
  padding:4px 12px;
  margin-bottom:14px;
}
.section-head h2{font-size:30px;margin-bottom:12px;}
.section-head p{color:var(--muted);font-size:15px;margin:0;}

/* ---------- Header ---------- */
.site-header{
  position:sticky;
  top:0;
  z-index:60;
  background:var(--white);
  border-bottom:1px solid var(--line);
  transition:box-shadow .25s ease;
}
.site-header.is-scrolled{box-shadow:0 6px 20px rgba(16,42,80,.08);}
.header-inner{
  display:flex;
  align-items:center;
  gap:24px;
  min-height:76px;
}
.brand{display:flex;align-items:center;gap:10px;flex:0 0 auto;color:var(--text);}
.brand:hover{color:var(--text);}
.brand-mark{
  width:40px;height:40px;
  display:inline-flex;align-items:center;justify-content:center;
  border-radius:12px;
  background:var(--blue);
  color:#fff;
  font-size:17px;
  box-shadow:0 6px 16px rgba(31,95,214,.28);
}
.brand-text{display:flex;flex-direction:column;line-height:1.2;}
.brand-text strong{font-size:17px;letter-spacing:.4px;}
.brand-text em{font-style:normal;font-size:11px;color:var(--muted);letter-spacing:.22em;}
.main-nav{display:flex;align-items:center;gap:6px;margin-left:8px;}
.nav-link{
  position:relative;
  display:inline-flex;align-items:center;
  height:44px;
  padding:0 12px;
  font-size:15px;
  color:var(--text);
  border-radius:8px;
  white-space:nowrap;
}
.nav-link::after{
  content:"";
  position:absolute;left:12px;right:12px;bottom:6px;
  height:2px;border-radius:2px;
  background:transparent;
  transition:background-color .2s ease;
}
.nav-link:hover{background:var(--blue-soft);color:var(--blue-dark);}
.nav-link:hover::after,.nav-link.active::after{background:var(--blue);}
.nav-link.active{color:var(--blue);font-weight:600;}
.header-actions{display:flex;align-items:center;gap:12px;margin-left:auto;}

.mega{position:relative;}
.mega-toggle{
  display:inline-flex;align-items:center;gap:6px;
  height:44px;padding:0 16px;
  background:var(--blue-soft);
  border:1px solid var(--blue-soft);
  border-radius:var(--r-btn);
  font-size:14px;color:var(--blue-dark);
  cursor:pointer;
  transition:background-color .2s ease,border-color .2s ease;
}
.mega-toggle:hover{background:var(--blue-hover);border-color:var(--blue-line);}
.mega-toggle .caret{font-size:11px;}
.mega-panel{
  position:absolute;
  right:0;top:calc(100% + 12px);
  width:680px;
  display:grid;
  grid-template-columns:1.1fr .9fr;
  gap:20px;
  padding:22px;
  background:var(--white);
  border:1px solid var(--line);
  border-radius:16px;
  box-shadow:var(--sh-2);
  opacity:0;
  visibility:hidden;
  transform:translateY(-6px);
  transition:opacity .2s ease, transform .2s ease, visibility .2s;
}
.mega:hover .mega-panel,
.mega:focus-within .mega-panel{opacity:1;visibility:visible;transform:translateY(0);}
.mega-title{
  font-size:13px;letter-spacing:.14em;color:var(--muted);
  margin:0 0 10px 8px;
}
.mega-link{
  display:flex;align-items:center;justify-content:space-between;gap:12px;
  padding:12px 10px;
  border-radius:10px;
  color:var(--text);
  transition:background-color .18s ease, transform .18s ease;
}
.mega-link span{display:flex;flex-direction:column;font-size:15px;font-weight:600;}
.mega-link .sub{font-size:12px;font-weight:400;color:var(--muted);margin-top:3px;}
.mega-link i{color:var(--blue);font-size:12px;opacity:0;transform:translateX(-4px);transition:all .18s ease;}
.mega-link:hover,.mega-link:focus-visible{background:#F0F5FD;transform:translateX(2px);}
.mega-link:hover i{opacity:1;transform:translateX(0);}
.mega-card{
  display:block;
  border:1px solid var(--line);
  border-radius:12px;
  overflow:hidden;
  background:var(--white);
  color:var(--text);
  box-shadow:var(--sh-1);
  transition:transform .2s ease, box-shadow .2s ease, border-color .2s ease;
}
.mega-card img{width:100%;aspect-ratio:16/10;object-fit:cover;border-radius:0;}
.mega-card-body{display:block;padding:12px 14px 14px;}
.mega-card-body strong{display:block;font-size:15px;margin-bottom:4px;}
.mega-card-body small{display:block;font-size:12.5px;color:var(--muted);line-height:1.6;}
.mega-card:hover{transform:translateY(-2px);box-shadow:var(--sh-2);border-color:var(--blue-line);}

/* ---------- Buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:46px;
  padding:0 22px;
  border-radius:var(--r-btn);
  font-size:15px;font-weight:600;
  border:1px solid transparent;
  cursor:pointer;
  transition:background-color .2s ease,color .2s ease,border-color .2s ease,transform .2s ease,box-shadow .2s ease;
}
.btn-primary{background:var(--blue);color:#fff;box-shadow:0 8px 20px rgba(31,95,214,.24);}
.btn-primary:hover{background:var(--blue-dark);color:#fff;transform:translateY(-1px);box-shadow:0 12px 26px rgba(31,95,214,.3);}
.btn-ghost{background:var(--white);color:var(--blue);border-color:var(--blue-line);}
.btn-ghost:hover{background:var(--blue-soft);color:var(--blue-dark);}
.btn-outline-light{background:transparent;color:#fff;border-color:rgba(255,255,255,.5);}
.btn-outline-light:hover{background:rgba(255,255,255,.12);color:#fff;}
.btn-sm{min-height:40px;padding:0 16px;font-size:14px;}
.btn-block{width:100%;}
.text-link{
  display:inline-flex;align-items:center;gap:6px;
  font-size:14.5px;font-weight:600;color:var(--blue);
}
.text-link i{font-size:12px;transition:transform .2s ease;}
.text-link:hover i{transform:translateX(3px);}

/* ---------- Badges / tags ---------- */
.badge{
  display:inline-flex;align-items:center;
  padding:4px 12px;
  border-radius:var(--r-pill);
  background:var(--teal-soft);
  color:var(--teal-deep);
  font-size:12.5px;font-weight:600;letter-spacing:.04em;
}
.badge-blue{background:var(--blue-soft);color:var(--blue-dark);}
.tag-cloud{display:flex;flex-wrap:wrap;gap:8px;}
.tag{
  display:inline-flex;align-items:center;
  padding:6px 12px;
  border-radius:var(--r-pill);
  border:1px solid var(--line);
  background:var(--white);
  font-size:13px;
  color:var(--muted);
  min-height:34px;
}
.tag:hover{background:var(--blue-soft);color:var(--blue-dark);border-color:var(--blue-line);}

/* ---------- Article hero / breadcrumb ---------- */
.article-hero{
  background:var(--white);
  border-bottom:1px solid var(--line);
  padding:22px 0 20px;
}
.breadcrumb{
  display:flex;flex-wrap:wrap;align-items:center;gap:8px;
  font-size:13px;color:var(--muted);
}
.breadcrumb a{color:var(--muted);}
.breadcrumb a:hover{color:var(--blue);}
.breadcrumb .sep{color:#B7C6D9;}
.breadcrumb .current{color:var(--text);font-weight:600;}

/* ---------- Layout ---------- */
.article-wrap{padding:48px 0 72px;}
.article-main{min-width:0;}
.article-side{min-width:0;}

.post{
  background:var(--white);
  border:1px solid var(--line);
  border-radius:var(--r-card);
  box-shadow:var(--sh-1);
  padding:36px 40px 40px;
  margin:0 0 40px;
}
.post-head .badge{margin-bottom:16px;}
.post-head h1{
  font-size:34px;
  line-height:1.4;
  margin-bottom:16px;
}
.post-meta{
  display:flex;flex-wrap:wrap;align-items:center;gap:10px;
  font-size:13px;color:var(--muted);
  padding-bottom:22px;
  border-bottom:1px solid var(--line);
}
.post-meta .dot{color:#C9D6E6;}
.post-meta .author{display:inline-flex;align-items:center;gap:6px;}
.post-meta .author i{color:var(--blue);}
.post-cover{margin:26px 0 6px;}
.post-cover img{width:100%;aspect-ratio:16/9;object-fit:cover;}
.post-cover figcaption{
  margin-top:10px;
  text-align:center;
  font-size:13px;
  color:var(--muted);
}

/* ---------- Article body ---------- */
.article-body{
  max-width:800px;
  margin:22px auto 0;
  font-size:16px;
  line-height:1.9;
  color:var(--text);
  counter-reset:h2counter;
}
.article-body p{margin:0 0 1.1em;color:#233650;}
.article-body h2{
  position:relative;
  counter-increment:h2counter;
  font-size:24px;
  margin:44px 0 18px;
  padding-left:16px;
  line-height:1.45;
}
.article-body h2::before{
  content:counter(h2counter,decimal-leading-zero);
  display:none;
}
.article-body h2::after{
  content:"";
  position:absolute;left:0;top:6px;bottom:6px;
  width:3px;border-radius:3px;
  background:var(--blue);
}
.article-body h3{font-size:19px;margin:30px 0 12px;font-weight:700;}
.article-body h4{font-size:16.5px;margin:24px 0 10px;}
.article-body a{color:var(--blue);border-bottom:1px solid var(--blue-line);}
.article-body a:hover{border-bottom-color:var(--blue);}
.article-body ul{margin:0 0 1.2em;padding-left:0;}
.article-body ul li{
  position:relative;
  padding-left:20px;
  margin-bottom:10px;
  color:#233650;
}
.article-body ul li::before{
  content:"";
  position:absolute;left:2px;top:12px;
  width:7px;height:7px;border-radius:50%;
  background:var(--blue);
}
.article-body ol{margin:0 0 1.2em;padding-left:22px;list-style:decimal;}
.article-body ol li{margin-bottom:10px;color:#233650;}
.article-body blockquote{
  margin:24px 0;
  padding:18px 22px;
  background:var(--blue-soft);
  border-left:3px solid var(--blue);
  border-radius:0 var(--r-btn) var(--r-btn) 0;
  color:#173358;
}
.article-body blockquote p:last-child{margin-bottom:0;}
.article-body img{margin:22px auto;border-radius:var(--r-img);}
.article-body table{
  width:100%;
  border-collapse:collapse;
  margin:24px 0;
  font-size:14.5px;
  overflow:hidden;
  border-radius:var(--r-btn);
}
.article-body thead th{
  background:var(--blue-soft);
  color:var(--blue-dark);
  font-weight:600;
  text-align:left;
  padding:12px 14px;
  border-bottom:1px solid var(--line);
}
.article-body tbody td{
  padding:12px 14px;
  border-bottom:1px solid var(--line);
  color:#233650;
}
.article-body tbody tr:nth-child(even){background:#FAFCFF;}
.article-body code{
  background:var(--blue-soft);
  color:var(--blue-dark);
  padding:2px 6px;
  border-radius:6px;
  font-size:14px;
}

.empty-state{
  display:flex;
  flex-direction:column;
  align-items:center;
  justify-content:center;
  gap:14px;
  min-height:220px;
  text-align:center;
  padding:36px 20px;
  background:var(--bg);
  border:1px dashed var(--line);
  border-radius:var(--r-card);
}
.empty-state i{font-size:30px;color:#9DB4D0;}
.empty-state p{margin:0;font-size:15px;color:var(--muted);}

/* ---------- Post footer blocks ---------- */
.post-tags{
  display:flex;flex-wrap:wrap;align-items:center;gap:10px;
  margin-top:36px;
  padding-top:22px;
  border-top:1px solid var(--line);
}
.post-tags .label{font-size:13px;color:var(--muted);}

.post-nav{
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:16px;
  margin-top:20px;
}
.post-nav-card{
  display:block;
  padding:18px 20px;
  border:1px solid var(--line);
  border-radius:var(--r-card);
  background:var(--white);
  box-shadow:var(--sh-1);
  transition:transform .2s ease, box-shadow .2s ease, border-color .2s ease;
}
.post-nav-card span{display:block;font-size:12.5px;color:var(--muted);margin-bottom:6px;}
.post-nav-card strong{display:block;font-size:15.5px;color:var(--text);line-height:1.6;}
.post-nav-card:hover{transform:translateY(-2px);box-shadow:var(--sh-2);border-color:var(--blue-line);}
.post-nav-card:hover strong{color:var(--blue-dark);}
.post-back{margin-top:26px;}

/* ---------- Related ---------- */
.related{margin-top:8px;}
.related-head{
  display:flex;align-items:baseline;justify-content:space-between;
  gap:16px;margin-bottom:18px;
}
.related-head h2{font-size:22px;}
.related-grid{
  display:grid;
  grid-template-columns:repeat(3,1fr);
  gap:18px;
}
.card{
  display:flex;flex-direction:column;
  background:var(--white);
  border:1px solid var(--line);
  border-radius:var(--r-card);
  box-shadow:var(--sh-1);
  overflow:hidden;
  transition:transform .22s ease, box-shadow .22s ease, border-color .22s ease;
  height:100%;
}
.card:hover{transform:translateY(-2px);box-shadow:var(--sh-2);border-color:var(--blue-line);}
.card-media{position:relative;overflow:hidden;border-radius:0;}
.card-media img{width:100%;aspect-ratio:16/10;object-fit:cover;border-radius:0;transition:transform .35s ease;}
.card:hover .card-media img{transform:scale(1.04);}
.card-media .badge{position:absolute;left:12px;top:12px;background:rgba(255,255,255,.94);color:var(--teal-deep);}
.card-body{padding:16px 18px 18px;display:flex;flex-direction:column;gap:10px;flex:1;}
.card-body h3{font-size:17px;line-height:1.55;}
.card-body h3 a{color:var(--text);}
.card-body h3 a:hover{color:var(--blue);}
.card-body p{font-size:14px;color:var(--muted);margin:0;line-height:1.75;}
.card-foot{
  display:flex;align-items:center;justify-content:space-between;
  margin-top:auto;padding-top:12px;border-top:1px solid var(--line);
  font-size:12.5px;color:var(--muted);
}

/* ---------- Sidebar ---------- */
.side-card{
  background:var(--white);
  border:1px solid var(--line);
  border-radius:var(--r-card);
  box-shadow:var(--sh-1);
  padding:22px 22px 24px;
  margin-bottom:20px;
}
.side-card h3{
  font-size:17px;
  margin-bottom:14px;
  padding-bottom:12px;
  border-bottom:1px solid var(--line);
}
.side-list li{border-bottom:1px dashed var(--line);}
.side-list li:last-child{border-bottom:none;}
.side-list a{
  display:flex;align-items:center;justify-content:space-between;gap:12px;
  min-height:48px;
  padding:6px 0;
  color:var(--text);
  font-size:14.5px;
}
.side-list a i{color:#B7C6D9;font-size:12px;transition:transform .2s ease,color .2s ease;}
.side-list a:hover{color:var(--blue-dark);background:#F6F9FD;border-radius:8px;padding-left:8px;padding-right:8px;}
.side-list a:hover i{color:var(--blue);transform:translateX(3px);}
.side-note{font-size:13px;color:var(--muted);line-height:1.75;margin:0 0 14px;}
.side-cta{
  background:var(--navy);
  border-color:var(--navy);
  color:#fff;
}
.side-cta h3{color:#fff;border-bottom-color:rgba(255,255,255,.18);}
.side-cta p{font-size:13.5px;color:rgba(255,255,255,.78);margin-bottom:16px;}
.side-cta .metric-row{
  display:grid;grid-template-columns:1fr 1fr;gap:14px;
  margin:18px 0 20px;
  padding-top:16px;
  border-top:1px solid rgba(255,255,255,.16);
}
.side-cta .metric-row b{display:block;font-size:22px;color:#5FD3D3;line-height:1.3;}
.side-cta .metric-row span{font-size:12px;color:rgba(255,255,255,.7);}
.side-cta .phone{
  display:inline-flex;align-items:center;gap:8px;
  margin-top:12px;font-size:14px;color:#fff;font-weight:600;
}
.side-cta .phone:hover{color:#5FD3D3;}

/* ---------- CTA band ---------- */
.cta-band{
  background:var(--navy);
  color:#fff;
  border-radius:18px;
  padding:44px 46px;
  display:grid;
  grid-template-columns:1.4fr .9fr;
  gap:28px;
  align-items:center;
}
.cta-band h2{color:#fff;font-size:26px;margin-bottom:10px;}
.cta-band p{color:rgba(255,255,255,.78);font-size:14.5px;margin:0;}
.cta-actions{display:flex;flex-wrap:wrap;gap:12px;justify-content:flex-end;}
.cta-actions .btn-primary{background:var(--orange);box-shadow:0 10px 24px rgba(255,122,69,.32);}
.cta-actions .btn-primary:hover{background:#F0692F;}

/* ---------- Footer ---------- */
.site-footer{
  background:var(--white);
  border-top:1px solid var(--line);
  padding:56px 0 0;
  margin-top:72px;
}
.footer-grid{
  display:grid;
  grid-template-columns:1.5fr 1fr 1fr 1.3fr;
  gap:32px;
  padding-bottom:36px;
}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:14px;}
.footer-brand strong{font-size:16px;}
.site-footer p{font-size:13.5px;color:var(--muted);margin:0 0 10px;line-height:1.8;}
.site-footer h4{font-size:15px;margin-bottom:16px;}
.footer-links li{margin-bottom:4px;}
.footer-links a{
  display:inline-flex;align-items:center;
  min-height:38px;
  font-size:13.5px;color:var(--muted);
}
.footer-links a:hover{color:var(--blue);}
.footer-contact li{
  display:flex;gap:10px;align-items:flex-start;
  font-size:13.5px;color:var(--muted);
  margin-bottom:12px;line-height:1.7;
}
.footer-contact i{color:var(--blue);margin-top:5px;font-size:13px;width:14px;}
.footer-bottom{
  border-top:1px solid var(--line);
  padding:18px 0 24px;
  display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;
  font-size:13px;color:var(--muted);
}
.footer-bottom a{color:var(--muted);}
.footer-bottom a:hover{color:var(--blue);}

/* ---------- Responsive ---------- */
@media screen and (max-width:1023px){
  .section{padding:var(--sec-tablet) 0;}
  .main-nav{margin-left:0;}
  .header-inner{flex-wrap:wrap;gap:12px;padding-top:10px;padding-bottom:10px;}
  .main-nav{
    order:3;width:100%;
    overflow-x:auto;
    padding-bottom:4px;
    -webkit-overflow-scrolling:touch;
    scrollbar-width:none;
  }
  .main-nav::-webkit-scrollbar{display:none;}
  .mega-panel{width:560px;grid-template-columns:1fr;max-height:70vh;overflow:auto;}
  .article-wrap{padding:32px 0 56px;}
  .article-side{margin-top:32px;}
  .post{padding:26px 24px 30px;}
  .post-head h1{font-size:28px;}
  .related-grid{grid-template-columns:1fr 1fr;}
  .cta-band{grid-template-columns:1fr;padding:34px 26px;border-radius:var(--r-card);}
  .cta-actions{justify-content:flex-start;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
}
@media screen and (max-width:767px){
  .header-inner{min-height:auto;}
  .brand-text em{display:none;}
  .mega-panel{
    position:fixed;left:16px;right:16px;top:auto;
    width:auto;transform:translateY(6px);
  }
  .cta-band h2{font-size:22px;}
}
@media screen and (max-width:639px){
  .container{padding:0 16px;}
  .section{padding:var(--sec-mobile) 0;}
  .section-head h2{font-size:24px;}
  .post{padding:22px 18px 26px;border-radius:12px;}
  .post-head h1{font-size:24px;}
  .article-body{font-size:15.5px;line-height:1.85;}
  .article-body h2{font-size:20px;margin:34px 0 14px;}
  .article-body h3{font-size:17.5px;}
  .post-nav{grid-template-columns:1fr;}
  .related-grid{grid-template-columns:1fr;}
  .footer-grid{grid-template-columns:1fr;}
  .footer-bottom{flex-direction:column;align-items:flex-start;}
  .btn{width:auto;}
  .cta-actions{flex-direction:column;align-items:stretch;}
  .cta-actions .btn{width:100%;}
}

/* roulang page: category1 */
:root{
  --blue:#1F5FD6;
  --blue-deep:#1A4FB8;
  --blue-soft:#EEF4FE;
  --blue-soft-2:#E3EDFD;
  --cyan:#0FA3A3;
  --cyan-soft:#E6F6F5;
  --cyan-deep:#0B7C7C;
  --orange:#FF7A45;
  --ink:#12233B;
  --muted:#5A6B82;
  --line:#E3EBF5;
  --line-strong:#C9DCFA;
  --bg:#F6F9FD;
  --white:#FFFFFF;
  --navy:#0E2A4E;
  --r-card:14px;
  --r-btn:10px;
  --r-img:12px;
  --r-pill:999px;
  --sh-1:0 1px 2px rgba(16,42,80,.05), 0 8px 24px rgba(16,42,80,.07);
  --sh-2:0 12px 32px rgba(16,42,80,.12);
  --pad-d:88px;
  --pad-t:64px;
  --pad-m:56px;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  font-family:"PingFang SC","Microsoft YaHei","Hiragino Sans GB",system-ui,-apple-system,"Segoe UI",sans-serif;
  font-size:16px;
  line-height:1.85;
  color:var(--ink);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border:0}
a{color:var(--blue);text-decoration:none;transition:color .2s ease}
a:hover{color:var(--blue-deep)}
h1,h2,h3,h4,p,ul,ol,li,figure,dl,dd,dt{margin:0;padding:0}
ul,ol{list-style:none}
h1,h2,h3,h4{line-height:1.32;font-weight:700;color:var(--ink);letter-spacing:.2px}
h1{font-size:40px}
h2{font-size:30px}
h3{font-size:20px}
h4{font-size:16px}
p{font-size:16px}
button{font-family:inherit}
:focus-visible{outline:2px solid var(--blue);outline-offset:2px}

.container{width:100%;max-width:1200px;margin:0 auto;padding:0 20px}
.section{padding:var(--pad-d) 0}
.section-alt{background:var(--white);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.section-head{max-width:780px;margin-bottom:32px}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;font-weight:600;letter-spacing:1.2px;color:var(--cyan-deep);
  background:var(--cyan-soft);border-radius:var(--r-pill);padding:5px 14px;margin-bottom:14px;
}
.section-title{margin-bottom:12px}
.section-title .num{color:var(--blue);font-weight:700;margin-right:10px;font-family:Inter,"DIN Alternate",sans-serif}
.section-sub{color:var(--muted);font-size:16px;max-width:800px}

/* ---------- header ---------- */
.site-header{
  position:sticky;top:0;z-index:120;background:var(--white);
  border-bottom:1px solid var(--line);transition:box-shadow .25s ease;
}
.site-header.is-scrolled{box-shadow:0 6px 20px rgba(16,42,80,.08)}
.header-inner{display:flex;align-items:center;gap:24px;min-height:72px}
.brand{display:flex;align-items:center;gap:10px;flex:0 0 auto}
.brand-mark{
  width:38px;height:38px;border-radius:11px;background:var(--blue);color:#fff;
  display:inline-flex;align-items:center;justify-content:center;font-size:16px;
  box-shadow:0 6px 14px rgba(31,95,214,.28);
}
.brand-text{display:flex;flex-direction:column;line-height:1.15}
.brand-text strong{font-size:16.5px;color:var(--ink);letter-spacing:.5px}
.brand-text em{font-style:normal;font-size:11.5px;color:var(--muted);letter-spacing:2.4px}
.main-nav{display:flex;align-items:center;gap:4px;margin-left:8px;flex:1 1 auto}
.nav-link{
  position:relative;display:inline-flex;align-items:center;height:44px;padding:0 12px;
  color:var(--ink);font-size:15px;font-weight:500;border-radius:8px;white-space:nowrap;
}
.nav-link::after{
  content:"";position:absolute;left:12px;right:12px;bottom:6px;height:2px;border-radius:2px;
  background:var(--blue);transform:scaleX(0);transform-origin:left;transition:transform .22s ease;
}
.nav-link:hover{color:var(--blue);background:var(--blue-soft)}
.nav-link:hover::after,.nav-link.active::after{transform:scaleX(1)}
.nav-link.active{color:var(--blue);font-weight:600}
.header-actions{display:flex;align-items:center;gap:12px;flex:0 0 auto}
.mega{position:relative}
.mega-toggle{
  display:inline-flex;align-items:center;gap:6px;height:40px;padding:0 14px;
  background:var(--white);border:1px solid var(--line);border-radius:var(--r-btn);
  color:var(--ink);font-size:14px;font-weight:600;cursor:pointer;transition:all .2s ease;
}
.mega-toggle:hover{border-color:var(--line-strong);background:var(--blue-soft);color:var(--blue)}
.caret{font-size:11px;color:var(--muted)}
.mega-panel{
  position:absolute;right:0;top:calc(100% + 12px);width:640px;
  background:var(--white);border:1px solid var(--line);border-radius:16px;box-shadow:var(--sh-2);
  padding:22px;display:grid;grid-template-columns:1.1fr 1fr;gap:22px;
  opacity:0;visibility:hidden;transform:translateY(-8px);transition:all .22s ease;z-index:140;
}
.mega:hover .mega-panel,.mega:focus-within .mega-panel{opacity:1;visibility:visible;transform:translateY(0)}
.mega-title{font-size:12.5px;font-weight:700;letter-spacing:1.4px;color:var(--muted);margin-bottom:10px}
.mega-link{
  display:flex;align-items:center;justify-content:space-between;gap:12px;
  padding:11px 12px;border-radius:10px;color:var(--ink);font-size:14.5px;font-weight:600;
  transition:background .2s ease,transform .2s ease;
}
.mega-link .sub{display:block;font-size:12.5px;font-weight:400;color:var(--muted);margin-top:2px}
.mega-link i{color:var(--blue);font-size:12px;opacity:.7}
.mega-link:hover{background:#F0F5FD;transform:translateX(2px);color:var(--blue)}
.mega-card{
  display:block;border:1px solid var(--line);border-radius:12px;overflow:hidden;background:var(--white);
  transition:box-shadow .2s ease,transform .2s ease,border-color .2s ease;
}
.mega-card img{width:100%;height:118px;object-fit:cover}
.mega-card-body{display:block;padding:12px 14px 14px}
.mega-card-body strong{display:block;font-size:14.5px;color:var(--ink);margin-bottom:4px}
.mega-card-body small{display:block;font-size:12.5px;color:var(--muted);line-height:1.6}
.mega-card:hover{box-shadow:var(--sh-1);transform:translateY(-2px);border-color:var(--line-strong)}

/* ---------- buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:44px;padding:0 22px;border-radius:var(--r-btn);border:1px solid transparent;
  font-size:15px;font-weight:600;cursor:pointer;transition:all .2s ease;white-space:nowrap;
}
.btn i{font-size:13px}
.btn-primary{background:var(--blue);color:#fff;box-shadow:0 6px 16px rgba(31,95,214,.24)}
.btn-primary:hover{background:var(--blue-deep);color:#fff;transform:translateY(-1px);box-shadow:0 10px 22px rgba(31,95,214,.3)}
.btn-ghost{background:var(--white);color:var(--blue);border-color:var(--blue)}
.btn-ghost:hover{background:var(--blue-soft);color:var(--blue-deep);transform:translateY(-1px)}
.btn-outline{background:transparent;color:var(--ink);border-color:var(--line)}
.btn-outline:hover{border-color:var(--line-strong);background:var(--white);color:var(--blue)}
.btn-sm{min-height:40px;padding:0 16px;font-size:14px}
.btn:active{transform:translateY(0) scale(.99)}
.btn[disabled],.btn.is-disabled{opacity:.5;cursor:not-allowed;transform:none;box-shadow:none}

.text-link{display:inline-flex;align-items:center;gap:7px;font-size:14.5px;font-weight:600;color:var(--blue)}
.text-link i{font-size:12px;transition:transform .2s ease}
.text-link:hover i{transform:translateX(3px)}

.badge{
  display:inline-flex;align-items:center;gap:6px;font-size:12.5px;font-weight:600;
  color:var(--cyan-deep);background:var(--cyan-soft);border-radius:var(--r-pill);padding:5px 13px;
}
.badge-orange{color:#B6472A;background:#FFF1EA}
.chip{
  display:inline-flex;align-items:center;font-size:12.5px;color:var(--muted);
  background:var(--bg);border:1px solid var(--line);border-radius:var(--r-pill);padding:4px 12px;
}

/* ---------- breadcrumb ---------- */
.breadcrumb{display:flex;align-items:center;flex-wrap:wrap;gap:8px;font-size:13px;color:var(--muted);margin-bottom:18px}
.breadcrumb a{color:var(--muted)}
.breadcrumb a:hover{color:var(--blue)}
.breadcrumb .sep{color:#B9C7DA}
.breadcrumb .current{color:var(--ink);font-weight:600}

/* ---------- category hero ---------- */
.cat-hero{
  position:relative;overflow:hidden;background:var(--white);
  border-bottom:1px solid var(--line);padding:48px 0 60px;
}
.cat-hero::before{
  content:"";position:absolute;inset:0;pointer-events:none;opacity:.5;
  background-image:
    linear-gradient(to right,rgba(31,95,214,.08) 1px,transparent 1px),
    linear-gradient(to bottom,rgba(31,95,214,.08) 1px,transparent 1px);
  background-size:56px 56px;
  mask-image:linear-gradient(to bottom,rgba(0,0,0,.9),rgba(0,0,0,0));
  -webkit-mask-image:linear-gradient(to bottom,rgba(0,0,0,.9),rgba(0,0,0,0));
}
.cat-hero .container{position:relative;z-index:1}
.cat-hero h1{font-size:40px;margin:14px 0 16px;line-height:1.22}
.hero-lead{max-width:640px;font-size:16.5px;color:var(--muted)}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:26px}
.hero-visual{
  position:relative;border-radius:var(--r-card);overflow:hidden;border:1px solid var(--line);
  box-shadow:var(--sh-1);background:var(--blue-soft);
}
.hero-visual img{width:100%;height:276px;object-fit:cover}
.hero-stats{
  display:grid;grid-template-columns:repeat(3,1fr);
  background:var(--white);border-top:1px solid var(--line);
}
.hero-stat{padding:14px 16px;border-right:1px solid var(--line)}
.hero-stat:last-child{border-right:0}
.hero-stat b{display:block;font-family:Inter,"DIN Alternate",sans-serif;font-size:22px;color:var(--blue);line-height:1.2}
.hero-stat span{font-size:12.5px;color:var(--muted)}

/* ---------- anchor layout ---------- */
.anchor-col{position:relative}
.anchor-nav{
  position:sticky;top:96px;background:var(--white);border:1px solid var(--line);
  border-radius:var(--r-card);padding:16px;box-shadow:var(--sh-1);
}
.anchor-title{
  display:flex;align-items:center;gap:8px;font-size:12.5px;font-weight:700;
  letter-spacing:1.4px;color:var(--muted);margin-bottom:10px;padding-left:4px;
}
.anchor-title::before{content:"";width:3px;height:13px;border-radius:2px;background:var(--cyan)}
.anchor-link{
  display:flex;align-items:center;gap:10px;min-height:46px;padding:8px 10px;border-radius:10px;
  font-size:14.5px;color:var(--ink);border-left:2px solid transparent;transition:all .2s ease;
}
.anchor-link i{font-size:11px;color:#A9BACF;transition:color .2s ease}
.anchor-link:hover{background:var(--blue-soft);color:var(--blue);border-left-color:var(--blue)}
.anchor-link:hover i{color:var(--blue)}
.anchor-note{
  margin-top:14px;padding:14px;border-radius:12px;background:var(--blue-soft);
  font-size:13px;color:var(--muted);line-height:1.7;
}
.anchor-note strong{display:block;color:var(--ink);font-size:14px;margin-bottom:4px}

.deep-block{margin-bottom:56px;scroll-margin-top:100px}
.deep-block:last-child{margin-bottom:0}
.deep-head{margin-bottom:22px;padding-bottom:14px;border-bottom:1px solid var(--line)}
.deep-head h3{font-size:22px;display:flex;align-items:center;gap:10px}
.deep-head h3 .idx{
  display:inline-flex;align-items:center;justify-content:center;width:30px;height:30px;flex:0 0 auto;
  border-radius:8px;background:var(--blue-soft);color:var(--blue);font-size:14px;
  font-family:Inter,"DIN Alternate",sans-serif;font-weight:700;
}
.deep-head p{margin-top:8px;color:var(--muted);font-size:14.5px}
.deep-row{display:flex;gap:36px;align-items:center}
.deep-row.reverse{flex-direction:row-reverse}
.deep-media{flex:0 0 45%;border-radius:var(--r-img);overflow:hidden;border:1px solid var(--line);box-shadow:var(--sh-1)}
.deep-media img{width:100%;height:240px;object-fit:cover}
.deep-body{flex:1 1 auto}
.deep-body p{color:var(--muted);font-size:15.5px}
.point-list{margin:18px 0 20px;display:grid;gap:10px}
.point-list li{
  display:flex;gap:10px;align-items:flex-start;font-size:15px;color:var(--ink);
  background:var(--bg);border:1px solid var(--line);border-radius:10px;padding:11px 14px;
}
.point-list li i{color:var(--cyan);font-size:13px;margin-top:6px}
.point-list li span{display:block;color:var(--muted);font-size:13.5px}

/* ---------- scenario ---------- */
.scenario-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
.scenario-card{
  background:var(--white);border:1px solid var(--line);border-radius:var(--r-card);
  padding:24px 22px;box-shadow:var(--sh-1);transition:all .22s ease;height:100%;
}
.scenario-card:hover{transform:translateY(-2px);box-shadow:var(--sh-2);border-color:var(--line-strong)}
.scenario-card .ico{
  width:42px;height:42px;border-radius:11px;background:var(--blue-soft);color:var(--blue);
  display:inline-flex;align-items:center;justify-content:center;font-size:16px;margin-bottom:14px;
}
.scenario-card h3{font-size:17px;margin-bottom:8px}
.scenario-card p{font-size:14px;color:var(--muted)}
.scenario-card ul{margin-top:12px;display:grid;gap:7px}
.scenario-card ul li{font-size:13.5px;color:var(--muted);display:flex;gap:8px}
.scenario-card ul li::before{content:"";width:5px;height:5px;border-radius:50%;background:var(--cyan);margin-top:9px;flex:0 0 auto}

/* ---------- spec ---------- */
.spec-panel{
  background:var(--white);border:1px solid var(--line);border-radius:var(--r-card);
  overflow:hidden;box-shadow:var(--sh-1);
}
.spec-row{display:grid;grid-template-columns:200px 1fr;gap:20px;padding:16px 22px;border-bottom:1px solid var(--line)}
.spec-row:nth-child(odd){background:#FBFDFF}
.spec-row:last-child{border-bottom:0}
.spec-term{font-weight:700;font-size:15px;color:var(--ink);display:flex;align-items:center;gap:8px}
.spec-term i{color:var(--blue);font-size:12px}
.spec-desc{font-size:14.5px;color:var(--muted)}
.spec-desc b{color:var(--cyan-deep);font-weight:700}

/* ---------- key cards ---------- */
.key-grid{display:grid;grid-template-columns:1.35fr 1fr;gap:20px;align-items:start}
.key-card{
  background:var(--white);border:1px solid var(--line);border-radius:var(--r-card);
  padding:26px;box-shadow:var(--sh-1);transition:all .22s ease;
}
.key-card:hover{box-shadow:var(--sh-2);border-color:var(--line-strong);transform:translateY(-2px)}
.key-card.dark{background:var(--navy);border-color:var(--navy);color:#fff}
.key-card.dark h3,.key-card.dark p,.key-card.dark li{color:#fff}
.key-card.dark .kicker{color:#7FD3D3}
.key-card h3{font-size:19px;margin-bottom:10px}
.key-card p{font-size:14.5px;color:var(--muted)}
.kicker{
  display:block;font-size:12.5px;font-weight:700;letter-spacing:1.4px;color:var(--cyan-deep);margin-bottom:10px;
}
.check-list{margin-top:16px;display:grid;gap:9px}
.check-list li{display:flex;gap:10px;font-size:14.5px;color:var(--muted)}
.check-list li i{color:var(--cyan);font-size:13px;margin-top:5px}
.key-card.dark .check-list li i{color:#5FD0D0}

/* ---------- timeline ---------- */
.timeline{position:relative;display:grid;grid-template-columns:repeat(5,1fr);gap:18px;margin-top:8px}
.timeline::before{
  content:"";position:absolute;left:6%;right:6%;top:13px;height:2px;
  background:linear-gradient(to right,rgba(15,163,163,.35),rgba(31,95,214,.35));
}
.tl-step{position:relative;padding-top:40px;text-align:left}
.tl-dot{
  position:absolute;top:4px;left:0;width:20px;height:20px;border-radius:50%;
  background:var(--white);border:3px solid var(--cyan);box-shadow:0 0 0 5px rgba(15,163,163,.12);
}
.tl-step h4{font-size:15.5px;margin-bottom:6px}
.tl-step span{display:block;font-size:12.5px;color:var(--cyan-deep);font-weight:600;margin-bottom:6px;letter-spacing:.6px}
.tl-step p{font-size:13.5px;color:var(--muted)}

/* ---------- faq ---------- */
.faq-list{display:grid;gap:12px;max-width:920px}
.faq-item{
  background:var(--white);border:1px solid var(--line);border-radius:var(--r-card);
  overflow:hidden;transition:border-color .2s ease,box-shadow .2s ease;
}
.faq-item[open]{background:#FBFDFF;border-color:var(--line-strong);box-shadow:var(--sh-1)}
.faq-item summary{
  list-style:none;cursor:pointer;min-height:48px;display:flex;align-items:center;justify-content:space-between;
  gap:16px;padding:14px 20px;font-size:15.5px;font-weight:600;color:var(--ink);
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary::after{
  content:"+";font-family:Inter,sans-serif;font-size:19px;color:var(--blue);line-height:1;flex:0 0 auto;
}
.faq-item[open] summary::after{content:"−"}
.faq-item summary:hover{background:var(--blue-soft)}
.faq-body{padding:0 20px 18px;font-size:14.5px;color:var(--muted);max-width:820px}

/* ---------- cta ---------- */
.cta-band{padding:0 0 var(--pad-d)}
.cta-inner{
  position:relative;overflow:hidden;background:var(--white);border:1px solid var(--blue);
  border-radius:18px;padding:44px 40px;box-shadow:var(--sh-1);
}
.cta-inner::after{
  content:"";position:absolute;right:-60px;top:-60px;width:240px;height:240px;border-radius:50%;
  background:var(--blue-soft);opacity:.8;z-index:0;
}
.cta-content{position:relative;z-index:1;display:flex;align-items:center;justify-content:space-between;gap:32px;flex-wrap:wrap}
.cta-content h2{font-size:26px;margin-bottom:8px}
.cta-content p{color:var(--muted);font-size:15px;max-width:620px}
.cta-actions{display:flex;align-items:center;gap:16px;flex-wrap:wrap}
.cta-phone{display:inline-flex;align-items:center;gap:8px;font-weight:700;font-size:17px;color:var(--ink);font-family:Inter,"DIN Alternate",sans-serif}
.cta-phone i{color:var(--orange)}

/* ---------- footer ---------- */
.site-footer{background:var(--navy);color:#C6D4E6;padding:60px 0 24px;margin-top:0}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.3fr;gap:36px}
.site-footer h4{color:#fff;font-size:15px;margin-bottom:16px;letter-spacing:.6px}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:14px}
.footer-brand .brand-mark{background:#1B4A82;box-shadow:none}
.footer-brand strong{color:#fff;font-size:16px}
.site-footer p{font-size:13.5px;color:#9FB4CF;line-height:1.8;margin-bottom:10px}
.footer-links{display:grid;gap:10px}
.footer-links a{color:#C6D4E6;font-size:14px}
.footer-links a:hover{color:#fff}
.footer-contact{display:grid;gap:12px}
.footer-contact li{display:flex;gap:10px;font-size:13.5px;color:#9FB4CF;line-height:1.7}
.footer-contact li i{color:#5FD0D0;font-size:13px;margin-top:5px}
.footer-bottom{
  margin-top:36px;padding-top:20px;border-top:1px solid rgba(255,255,255,.12);
  display:flex;justify-content:space-between;gap:12px;flex-wrap:wrap;font-size:13px;color:#8FA6C4;
}
.footer-bottom a{color:#8FA6C4}
.footer-bottom a:hover{color:#fff}

/* ---------- responsive ---------- */
@media screen and (max-width:1023px){
  h1{font-size:34px}
  h2{font-size:26px}
  .section{padding:var(--pad-t) 0}
  .cta-band{padding-bottom:var(--pad-t)}
  .main-nav{overflow-x:auto;scrollbar-width:none;padding-bottom:2px}
  .main-nav::-webkit-scrollbar{display:none}
  .mega-panel{width:520px;grid-template-columns:1fr}
  .cat-hero h1{font-size:34px}
  .hero-visual{margin-top:28px}
  .anchor-nav{position:static;margin-bottom:28px}
  .deep-row,.deep-row.reverse{flex-direction:column;gap:22px}
  .deep-media{flex:1 1 auto;width:100%}
  .deep-media img{height:220px}
  .scenario-grid{grid-template-columns:repeat(2,1fr)}
  .key-grid{grid-template-columns:1fr}
  .timeline{grid-template-columns:repeat(2,1fr);gap:22px}
  .timeline::before{display:none}
  .footer-grid{grid-template-columns:repeat(2,1fr);gap:32px}
}
@media screen and (max-width:767px){
  .container{padding:0 16px}
  .section{padding:var(--pad-m) 0}
  .cta-band{padding-bottom:var(--pad-m)}
  h1{font-size:30px}
  h2{font-size:24px}
  .header-inner{flex-wrap:wrap;gap:12px;padding:12px 0;min-height:auto}
  .main-nav{order:3;width:100%;margin-left:0;gap:2px}
  .nav-link{padding:0 10px;font-size:14px}
  .header-actions{margin-left:auto}
  .mega-panel{right:-60px;width:min(92vw,420px)}
  .cat-hero{padding:34px 0 44px}
  .cat-hero h1{font-size:30px;margin:12px 0 12px}
  .hero-lead{font-size:15.5px}
  .hero-visual img{height:210px}
  .hero-stats{grid-template-columns:1fr}
  .hero-stat{border-right:0;border-bottom:1px solid var(--line)}
  .hero-stat:last-child{border-bottom:0}
  .deep-media img{height:186px}
  .scenario-grid{grid-template-columns:1fr}
  .spec-row{grid-template-columns:1fr;gap:6px;padding:14px 16px}
  .timeline{grid-template-columns:1fr}
  .cta-inner{padding:30px 22px}
  .cta-content h2{font-size:22px}
  .footer-grid{grid-template-columns:1fr}
  .footer-bottom{flex-direction:column}
}
@media screen and (max-width:519px){
  .brand-text strong{font-size:15px}
  .brand-text em{letter-spacing:1.6px}
  .btn{padding:0 18px;font-size:14.5px}
  .hero-actions .btn{flex:1 1 100%}
  .faq-item summary{font-size:14.5px;padding:13px 16px}
  .faq-body{padding:0 16px 16px}
}

/* roulang page: category2 */
:root{
  --primary:#1F5FD6;
  --primary-dark:#1A52B8;
  --primary-soft:#EEF4FE;
  --primary-hover:#E3EDFD;
  --teal:#0FA3A3;
  --teal-soft:#E6F6F5;
  --teal-deep:#0B7C7C;
  --orange:#FF7A45;
  --ink:#12233B;
  --muted:#5A6B82;
  --border:#E3EBF5;
  --border-strong:#C9DCFA;
  --bg:#F6F9FD;
  --white:#FFFFFF;
  --navy:#0E2A4E;
  --r-card:14px;
  --r-btn:10px;
  --r-img:12px;
  --r-pill:999px;
  --sh-1:0 1px 2px rgba(16,42,80,.05),0 8px 24px rgba(16,42,80,.07);
  --sh-2:0 12px 32px rgba(16,42,80,.12);
  --container:1200px;
}

/* ===== 基础 reset ===== */
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:"PingFang SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",Roboto,"Helvetica Neue",sans-serif;
  font-size:16px;
  line-height:1.85;
  color:var(--ink);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border:0;}
a{color:var(--primary);text-decoration:none;transition:color .18s ease,background-color .18s ease,border-color .18s ease;}
a:hover{color:var(--primary-dark);}
ul,ol{margin:0;padding:0;}
h1,h2,h3,h4,p,dl,dd,figure{margin:0;}
h1,h2,h3,h4{color:var(--ink);font-weight:700;line-height:1.3;}
button{font-family:inherit;}
:focus-visible{outline:2px solid var(--primary);outline-offset:2px;}

/* ===== 容器与板块 ===== */
.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 20px;}
.section{padding:88px 0;}
.section-alt{background:var(--white);}
.section-tint{background:var(--primary-soft);}
.section-head{max-width:780px;margin-bottom:36px;}
.section-kicker{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;letter-spacing:1px;font-weight:600;
  color:var(--teal-deep);background:var(--teal-soft);
  border-radius:var(--r-pill);padding:5px 14px;margin-bottom:14px;
}
.section-head h2{font-size:30px;letter-spacing:.2px;}
.section-head p{margin-top:12px;color:var(--muted);font-size:16px;}

/* ===== Header ===== */
.site-header{
  position:sticky;top:0;z-index:80;
  background:var(--white);
  border-bottom:1px solid var(--border);
  transition:box-shadow .22s ease;
}
.site-header.is-scrolled{box-shadow:0 6px 22px rgba(16,42,80,.09);}
.header-inner{display:flex;align-items:center;gap:20px;min-height:72px;}
.brand{display:flex;align-items:center;gap:10px;color:var(--ink);flex:0 0 auto;}
.brand:hover{color:var(--primary);}
.brand-mark{
  width:38px;height:38px;border-radius:11px;background:var(--primary);
  display:grid;place-items:center;color:#fff;font-size:16px;
  box-shadow:0 6px 16px rgba(31,95,214,.26);
}
.brand-text{display:flex;flex-direction:column;line-height:1.15;}
.brand-text strong{font-size:17px;font-weight:700;letter-spacing:.4px;}
.brand-text em{font-style:normal;font-size:11px;color:var(--muted);letter-spacing:2.5px;}

.main-nav{display:flex;align-items:center;gap:2px;margin-left:6px;}
.nav-link{
  position:relative;display:inline-flex;align-items:center;
  height:44px;padding:0 14px;border-radius:8px;
  font-size:15px;color:var(--ink);white-space:nowrap;
}
.nav-link:hover{background:var(--primary-soft);color:var(--primary);}
.nav-link.active{color:var(--primary);font-weight:600;}
.nav-link.active::after{
  content:"";position:absolute;left:14px;right:14px;bottom:4px;height:2px;
  background:var(--primary);border-radius:2px;
}
.header-actions{margin-left:auto;display:flex;align-items:center;gap:12px;}

.mega{position:relative;}
.mega-toggle{
  display:inline-flex;align-items:center;gap:7px;height:40px;padding:0 15px;
  background:var(--white);border:1px solid var(--border);border-radius:var(--r-btn);
  font-size:14px;font-weight:600;color:var(--ink);cursor:pointer;
  transition:background-color .18s ease,border-color .18s ease,color .18s ease;
}
.mega-toggle:hover{background:var(--primary-soft);border-color:var(--border-strong);color:var(--primary);}
.mega-toggle .caret{font-size:11px;color:var(--muted);}
.mega-panel{
  position:absolute;right:0;top:calc(100% + 14px);width:680px;
  background:var(--white);border:1px solid var(--border);border-radius:16px;
  box-shadow:var(--sh-2);padding:20px;
  display:grid;grid-template-columns:1.05fr .95fr;gap:20px;
  opacity:0;visibility:hidden;transform:translateY(-6px);
  transition:opacity .2s ease,transform .2s ease,visibility .2s ease;
}
.mega:hover .mega-panel,
.mega:focus-within .mega-panel,
.mega.is-open .mega-panel{opacity:1;visibility:visible;transform:translateY(0);}
.mega-title{font-size:12px;letter-spacing:1.4px;color:var(--muted);font-weight:600;margin-bottom:10px;}
.mega-link{
  display:flex;align-items:center;justify-content:space-between;gap:12px;
  padding:11px 12px;border-radius:10px;color:var(--ink);font-size:15px;font-weight:600;
  transition:background-color .16s ease,transform .16s ease,color .16s ease;
}
.mega-link .sub{display:block;font-size:12px;font-weight:400;color:var(--muted);margin-top:2px;letter-spacing:.2px;}
.mega-link i{font-size:12px;color:var(--primary);opacity:0;transition:opacity .16s ease,transform .16s ease;}
.mega-link:hover,.mega-link:focus-visible{background:#F0F5FD;color:var(--primary);transform:translateX(2px);}
.mega-link:hover i,.mega-link:focus-visible i{opacity:1;transform:translateX(2px);}
.mega-card{
  display:flex;gap:12px;align-items:center;padding:12px;border-radius:12px;
  border:1px solid var(--border);background:#FBFDFF;color:var(--ink);
  transition:box-shadow .18s ease,transform .18s ease,border-color .18s ease;
}
.mega-card img{width:92px;height:66px;object-fit:cover;border-radius:10px;flex:0 0 auto;}
.mega-card-body strong{display:block;font-size:14px;line-height:1.5;}
.mega-card-body small{display:block;font-size:12px;color:var(--muted);line-height:1.6;margin-top:4px;}
.mega-card:hover{transform:translateY(-2px);box-shadow:var(--sh-1);border-color:var(--border-strong);color:var(--ink);}

/* ===== 按钮 ===== */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:44px;padding:0 22px;border-radius:var(--r-btn);
  font-size:15px;font-weight:600;border:1px solid transparent;cursor:pointer;
  transition:background-color .18s ease,color .18s ease,box-shadow .18s ease,transform .18s ease,border-color .18s ease;
}
.btn-primary{background:var(--primary);color:#fff;box-shadow:0 8px 18px rgba(31,95,214,.22);}
.btn-primary:hover{background:var(--primary-dark);color:#fff;transform:translateY(-1px);box-shadow:0 12px 26px rgba(31,95,214,.28);}
.btn-primary:active{transform:translateY(0);box-shadow:0 6px 14px rgba(31,95,214,.22);}
.btn-outline{background:var(--white);color:var(--primary);border-color:var(--primary);}
.btn-outline:hover{background:var(--primary-soft);color:var(--primary-dark);}
.btn-ghost{background:var(--white);color:var(--ink);border-color:var(--border);}
.btn-ghost:hover{background:var(--primary-soft);border-color:var(--border-strong);color:var(--primary);}
.btn-sm{min-height:40px;padding:0 16px;font-size:14px;}
.btn-lg{min-height:50px;padding:0 28px;font-size:16px;}
.btn:focus-visible{outline:2px solid var(--primary);outline-offset:2px;}

.text-link{display:inline-flex;align-items:center;gap:7px;font-weight:600;font-size:15px;color:var(--primary);}
.text-link i{font-size:12px;transition:transform .18s ease;}
.text-link:hover i{transform:translateX(3px);}

/* ===== 分类 Hero ===== */
.cat-hero{
  position:relative;overflow:hidden;
  background:var(--white);
  border-bottom:1px solid var(--border);
  padding:58px 0 52px;
}
.cat-hero::before{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:linear-gradient(rgba(31,95,214,.07) 1px,transparent 1px),
                   linear-gradient(90deg,rgba(31,95,214,.07) 1px,transparent 1px);
  background-size:52px 52px;
}
.cat-hero::after{
  content:"";position:absolute;right:-120px;top:-80px;width:420px;height:420px;border-radius:50%;
  border:1px solid rgba(15,163,163,.16);pointer-events:none;
}
.cat-hero .container{position:relative;z-index:1;}
.breadcrumb{font-size:13px;color:var(--muted);display:flex;flex-wrap:wrap;gap:6px;align-items:center;margin-bottom:16px;}
.breadcrumb a{color:var(--muted);}
.breadcrumb a:hover{color:var(--primary);}
.breadcrumb .sep{color:#A9B8CC;}
.cat-hero h1{font-size:40px;line-height:1.25;letter-spacing:.3px;}
.cat-hero h1 span{display:block;font-size:16px;font-weight:400;color:var(--muted);margin-top:12px;letter-spacing:.4px;}
.cat-hero .hero-lead{max-width:760px;margin-top:16px;font-size:16px;color:var(--muted);}
.hero-tags{display:flex;flex-wrap:wrap;gap:10px;margin-top:22px;}
.tag{
  display:inline-flex;align-items:center;gap:6px;
  padding:6px 14px;border-radius:var(--r-pill);
  background:var(--teal-soft);color:var(--teal-deep);
  font-size:13px;font-weight:600;
}
.tag .dot{width:6px;height:6px;border-radius:50%;background:var(--teal);}

/* ===== 媒体图 + HUD 面板 ===== */
.media-figure{position:relative;border-radius:var(--r-img);overflow:hidden;box-shadow:var(--sh-1);}
.media-figure img{width:100%;aspect-ratio:16/10;object-fit:cover;border-radius:var(--r-img);}
.media-figure figcaption{
  position:absolute;left:0;right:0;bottom:0;
  padding:14px 18px;font-size:13px;color:#E8F0FA;
  background:rgba(14,42,78,.82);
}
.hud-panel{
  background:var(--navy);border-radius:var(--r-card);padding:26px 24px;color:#C9DAEE;
  box-shadow:var(--sh-1);
}
.hud-panel .hud-title{
  display:flex;align-items:center;gap:9px;
  font-size:13px;letter-spacing:1.6px;color:#8FB3DA;font-weight:600;
  padding-bottom:14px;border-bottom:1px solid rgba(255,255,255,.14);
}
.hud-panel .hud-title::before{content:"";width:8px;height:8px;border-radius:50%;background:var(--teal);}
.hud-list{list-style:none;margin-top:6px;}
.hud-list li{
  display:flex;align-items:baseline;justify-content:space-between;gap:14px;
  padding:14px 0;border-bottom:1px solid rgba(255,255,255,.09);
}
.hud-list li:last-child{border-bottom:0;}
.hud-list span{font-size:14px;color:#9FB8D4;}
.hud-list strong{font-size:17px;color:#fff;font-weight:600;letter-spacing:.3px;}
.hud-list strong em{font-style:normal;color:var(--teal);}

/* ===== 不对称图文 ===== */
.split-block{align-items:center;}
.split-figure{border-radius:var(--r-img);overflow:hidden;box-shadow:var(--sh-1);}
.split-figure img{width:100%;aspect-ratio:16/11;object-fit:cover;border-radius:var(--r-img);transition:transform .4s ease;}
.split-figure:hover img{transform:scale(1.02);}
.split-body h3{font-size:24px;margin-bottom:14px;}
.split-body .eyebrow{
  display:inline-block;font-size:12px;font-weight:700;letter-spacing:1.6px;
  color:var(--primary);background:var(--primary-soft);
  padding:4px 12px;border-radius:var(--r-pill);margin-bottom:14px;
}
.split-body p{color:var(--muted);font-size:16px;}
.point-list{list-style:none;margin:20px 0 22px;}
.point-list li{
  position:relative;padding:9px 0 9px 30px;font-size:15px;color:var(--ink);line-height:1.75;
}
.point-list li::before{
  content:"";position:absolute;left:6px;top:20px;width:7px;height:7px;border-radius:50%;
  background:var(--teal);box-shadow:0 0 0 4px rgba(15,163,163,.14);
}
.point-list li b{font-weight:600;}

/* ===== 规格定义列表 ===== */
.spec-list{
  background:var(--white);border:1px solid var(--border);border-radius:var(--r-card);
  overflow:hidden;box-shadow:var(--sh-1);
}
.spec-row{
  display:grid;grid-template-columns:210px 1fr;gap:20px;
  padding:18px 24px;border-bottom:1px solid var(--border);
}
.spec-row:last-child{border-bottom:0;}
.spec-row:nth-child(odd){background:#FBFDFF;}
.spec-row dt{font-weight:600;color:var(--ink);font-size:15px;}
.spec-row dd{color:var(--muted);font-size:15px;}

/* ===== 横向流程时间轴 ===== */
.timeline{position:relative;margin-top:44px;}
.timeline-track{
  position:absolute;left:0;right:0;top:13px;height:2px;background:#D6EDEC;border-radius:2px;
}
.timeline-grid{display:grid;grid-template-columns:repeat(5,1fr);gap:0;position:relative;}
.tl-item{padding-right:22px;}
.tl-dot{
  position:relative;z-index:1;width:28px;height:28px;border-radius:50%;
  background:var(--white);border:2px solid var(--teal);color:var(--teal-deep);
  display:grid;place-items:center;font-size:12px;font-weight:700;
}
.tl-item h4{margin:18px 0 8px;font-size:17px;}
.tl-item p{margin:0;font-size:14px;color:var(--muted);line-height:1.7;}

/* ===== 场景卡 ===== */
.scene-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;}
.scene-card{
  background:var(--white);border:1px solid var(--border);border-radius:var(--r-card);
  padding:24px 22px;box-shadow:var(--sh-1);
  transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
}
.scene-card:hover{transform:translateY(-2px);box-shadow:var(--sh-2);border-color:var(--border-strong);}
.scene-icon{
  width:44px;height:44px;border-radius:12px;display:grid;place-items:center;
  background:var(--primary-soft);color:var(--primary);font-size:18px;margin-bottom:16px;
}
.scene-card h3{font-size:18px;margin-bottom:8px;}
.scene-card p{font-size:14px;color:var(--muted);line-height:1.75;}

/* ===== FAQ ===== */
.faq-wrap{max-width:900px;}
.faq{border:1px solid var(--border);border-radius:var(--r-card);background:var(--white);overflow:hidden;box-shadow:var(--sh-1);}
.faq-item{border-bottom:1px solid var(--border);}
.faq-item:last-child{border-bottom:0;}
.faq-item summary{
  list-style:none;cursor:pointer;display:flex;align-items:center;justify-content:space-between;gap:16px;
  min-height:48px;padding:18px 22px;font-size:16px;font-weight:600;color:var(--ink);
  transition:background-color .18s ease;
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary::after{content:"+";font-size:20px;font-weight:400;color:var(--primary);line-height:1;}
.faq-item[open] summary::after{content:"−";}
.faq-item summary:hover{background:#F6F9FD;}
.faq-item[open]{background:#F6F9FD;}
.faq-item .faq-body{padding:0 22px 20px;font-size:15px;color:var(--muted);}
.faq-item .faq-body p+p{margin-top:10px;}

/* ===== CTA ===== */
.cta-band{
  background:var(--white);border:1px solid var(--border-strong);border-radius:20px;
  padding:44px;display:flex;align-items:center;justify-content:space-between;gap:36px;
  box-shadow:var(--sh-1);
}
.cta-band h2{font-size:26px;margin-bottom:10px;}
.cta-band p{color:var(--muted);font-size:15px;max-width:620px;}
.cta-actions{display:flex;flex-direction:column;gap:12px;flex:0 0 auto;}
.cta-phone{display:inline-flex;align-items:center;gap:9px;font-size:15px;font-weight:600;color:var(--ink);}
.cta-phone i{color:var(--teal);}
.cta-phone:hover{color:var(--primary);}

/* ===== Footer ===== */
.site-footer{background:var(--navy);color:#C7D6E8;padding-top:64px;margin-top:0;}
.footer-grid{display:grid;grid-template-columns:1.45fr 1fr 1fr 1.3fr;gap:40px;}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:16px;color:#fff;}
.footer-brand strong{font-size:16px;letter-spacing:.4px;}
.site-footer p{font-size:14px;line-height:1.9;color:#A8BDD6;margin-bottom:10px;}
.site-footer h4{color:#fff;font-size:16px;font-weight:600;margin-bottom:18px;}
.footer-links{list-style:none;}
.footer-links li{margin-bottom:11px;}
.footer-links a{color:#C7D6E8;font-size:14px;}
.footer-links a:hover{color:#fff;}
.footer-contact{list-style:none;font-size:14px;}
.footer-contact li{display:flex;gap:10px;margin-bottom:13px;line-height:1.65;color:#C7D6E8;}
.footer-contact i{color:var(--teal);margin-top:5px;flex:0 0 auto;}
.footer-bottom{
  margin-top:48px;border-top:1px solid rgba(255,255,255,.14);
  padding:20px 0;display:flex;align-items:center;justify-content:space-between;gap:14px;
  font-size:13px;color:#93A9C2;flex-wrap:wrap;
}
.footer-bottom a{color:#93A9C2;}
.footer-bottom a:hover{color:#fff;}

/* ===== 断点：≤1023 ===== */
@media (max-width:1023px){
  .section{padding:64px 0;}
  .cat-hero{padding:44px 0 40px;}
  .cat-hero h1{font-size:32px;}
  .header-inner{gap:14px;}
  .main-nav{margin-left:0;overflow-x:auto;flex:1 1 auto;-webkit-overflow-scrolling:touch;}
  .main-nav::-webkit-scrollbar{display:none;}
  .mega-panel{width:560px;grid-template-columns:1fr;}
  .scene-grid{grid-template-columns:repeat(2,1fr);}
  .footer-grid{grid-template-columns:repeat(2,1fr);gap:32px;}
  .cta-band{flex-direction:column;align-items:flex-start;padding:36px;}
  .cta-actions{flex-direction:row;align-items:center;flex-wrap:wrap;}
  .spec-row{grid-template-columns:180px 1fr;}
}

/* ===== 断点：≤767 ===== */
@media (max-width:767px){
  .header-inner{flex-wrap:wrap;padding:10px 0;min-height:auto;row-gap:8px;}
  .header-actions{margin-left:auto;}
  .main-nav{order:3;flex:0 0 100%;border-top:1px solid var(--border);padding-top:6px;}
  .nav-link{padding:0 12px;font-size:14px;}
  .mega-panel{position:fixed;left:16px;right:16px;width:auto;top:auto;margin-top:10px;}
  .section{padding:56px 0;}
  .cat-hero h1{font-size:28px;}
  .cat-hero h1 span{font-size:15px;}
  .timeline-track{display:none;}
  .timeline-grid{grid-template-columns:1fr;gap:24px;}
  .tl-item{padding-right:0;padding-left:0;}
  .tl-dot{margin-bottom:4px;}
  .tl-item h4{margin-top:6px;}
  .spec-row{grid-template-columns:1fr;gap:6px;padding:16px 18px;}
  .footer-grid{grid-template-columns:1fr;gap:30px;}
  .footer-bottom{flex-direction:column;align-items:flex-start;}
}

/* ===== 断点：≤519 ===== */
@media (max-width:519px){
  .container{padding:0 16px;}
  .section{padding:48px 0;}
  .section-head h2,.cta-band h2{font-size:22px;}
  .cat-hero{padding:36px 0 32px;}
  .cat-hero h1{font-size:25px;}
  .scene-grid{grid-template-columns:1fr;}
  .btn{width:100%;}
  .btn-sm,.mega-toggle{width:auto;}
  .cta-actions{width:100%;flex-direction:column;align-items:stretch;}
  .mega-card img{width:76px;height:56px;}
  .split-body h3{font-size:20px;}
}

/* roulang page: category3 */
:root{
  --blue:#1F5FD6;
  --blue-dark:#1A52B8;
  --blue-soft:#EEF4FE;
  --blue-soft-2:#E3EDFD;
  --blue-line:#C9DCFA;
  --teal:#0FA3A3;
  --teal-deep:#0B7C7C;
  --teal-soft:#E6F6F5;
  --teal-light:#7FE0E0;
  --orange:#FF7A45;
  --ink:#12233B;
  --muted:#5A6B82;
  --line:#E3EBF5;
  --page:#F6F9FD;
  --white:#FFFFFF;
  --deep:#0E2A4E;
  --r-card:14px;
  --r-btn:10px;
  --r-img:12px;
  --r-pill:999px;
  --sh-1:0 1px 2px rgba(16,42,80,.05), 0 8px 24px rgba(16,42,80,.07);
  --sh-2:0 12px 32px rgba(16,42,80,.12);
  --sec:88px;
  --maxw:1200px;
}

*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:"PingFang SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
  font-size:16px;
  line-height:1.85;
  color:var(--ink);
  background:var(--page);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;}
a{color:var(--blue);text-decoration:none;transition:color .2s ease;}
a:hover{color:var(--blue-dark);}
h1,h2,h3,h4{margin:0;font-weight:700;line-height:1.35;color:var(--ink);letter-spacing:.2px;}
p{margin:0 0 1em;}
p:last-child{margin-bottom:0;}
ul{margin:0;padding:0;list-style:none;}
button{font:inherit;cursor:pointer;}
:focus-visible{outline:2px solid var(--blue);outline-offset:2px;}

.container{width:100%;max-width:var(--maxw);margin:0 auto;padding:0 20px;}
.section{padding:var(--sec) 0;}
.section-tight{padding:64px 0;}
.section-head{max-width:800px;margin-bottom:32px;}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;letter-spacing:1px;color:var(--teal-deep);
  background:var(--teal-soft);border-radius:var(--r-pill);
  padding:5px 14px;margin-bottom:16px;
}
.eyebrow.on-dark{background:rgba(255,255,255,.12);color:#D8EEEE;}
h2{font-size:30px;margin-bottom:14px;}
h2 .num{
  font-family:Inter,"DIN Alternate",system-ui,sans-serif;
  font-size:19px;color:var(--blue);margin-right:12px;
  vertical-align:2px;
}
h3{font-size:20px;}
.lead{font-size:16px;line-height:1.85;color:var(--muted);max-width:800px;}

/* ---------- header ---------- */
.site-header{
  position:sticky;top:0;z-index:80;
  background:var(--white);
  border-bottom:1px solid var(--line);
  transition:box-shadow .25s ease;
}
.site-header.is-scrolled{box-shadow:0 6px 20px rgba(16,42,80,.08);}
.header-inner{display:flex;align-items:center;gap:24px;min-height:72px;}
.brand{display:flex;align-items:center;gap:10px;color:var(--ink);}
.brand:hover{color:var(--ink);}
.brand-mark{
  width:38px;height:38px;border-radius:10px;
  background:var(--blue);color:#fff;
  display:grid;place-items:center;font-size:17px;
  box-shadow:0 6px 14px rgba(31,95,214,.25);
}
.brand-text strong{display:block;font-size:16px;letter-spacing:.6px;}
.brand-text em{font-style:normal;font-size:11px;letter-spacing:3px;color:var(--muted);}

.main-nav{display:flex;align-items:center;gap:4px;margin-left:8px;}
.nav-link{
  position:relative;display:inline-flex;align-items:center;
  min-height:44px;padding:0 14px;border-radius:8px;
  font-size:15px;color:var(--ink);
}
.nav-link:hover{background:var(--blue-soft);color:var(--blue);}
.nav-link.active{color:var(--blue);font-weight:600;}
.nav-link.active::after{
  content:"";position:absolute;left:14px;right:14px;bottom:6px;
  height:2px;border-radius:2px;background:var(--blue);
}

.header-actions{display:flex;align-items:center;gap:12px;margin-left:auto;}

/* mega */
.mega{position:relative;}
.mega::after{content:"";position:absolute;left:0;right:0;top:100%;height:14px;}
.mega-toggle{
  display:inline-flex;align-items:center;gap:6px;
  min-height:44px;padding:0 16px;
  background:var(--white);color:var(--ink);
  border:1px solid var(--line);border-radius:var(--r-btn);
  font-size:14px;transition:.2s ease;
}
.mega-toggle:hover{border-color:var(--blue-line);color:var(--blue);background:var(--blue-soft);}
.mega-toggle .caret{font-size:12px;color:var(--blue);}
.mega-panel{
  position:absolute;right:0;top:calc(100% + 10px);
  width:680px;display:none;grid-template-columns:1.25fr 1fr;gap:20px;
  background:var(--white);border:1px solid var(--line);border-radius:16px;
  box-shadow:var(--sh-2);padding:20px;z-index:90;
}
.mega:hover .mega-panel,
.mega:focus-within .mega-panel,
.mega.open .mega-panel{display:grid;}
.mega-title{font-size:12px;letter-spacing:2px;color:var(--muted);margin:0 0 10px;}
.mega-link{
  display:flex;align-items:center;justify-content:space-between;gap:12px;
  padding:12px 12px;border-radius:10px;color:var(--ink);
  font-size:15px;min-height:48px;transition:.2s ease;
}
.mega-link .sub{display:block;font-size:12.5px;color:var(--muted);font-weight:400;margin-top:2px;}
.mega-link i{color:var(--blue-line);font-size:12px;transition:.2s ease;}
.mega-link:hover{background:#F0F5FD;transform:translateX(2px);color:var(--blue);}
.mega-link:hover i{transform:translateX(3px);color:var(--blue);}
.mega-card{
  display:block;background:#FAFCFF;border:1px solid var(--line);
  border-radius:12px;overflow:hidden;color:var(--ink);transition:.2s ease;
}
.mega-card img{aspect-ratio:16/9;object-fit:cover;width:100%;}
.mega-card-body{display:block;padding:12px 14px 14px;}
.mega-card-body strong{display:block;font-size:14.5px;}
.mega-card-body small{display:block;font-size:12.5px;color:var(--muted);line-height:1.65;margin-top:4px;}
.mega-card:hover{transform:translateY(-2px);box-shadow:var(--sh-1);border-color:var(--blue-line);}

/* buttons */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:46px;padding:12px 24px;border-radius:var(--r-btn);
  font-size:15px;font-weight:600;border:1px solid transparent;
  transition:transform .2s ease,box-shadow .2s ease,background-color .2s ease,color .2s ease,border-color .2s ease;
}
.btn-sm{min-height:40px;padding:9px 18px;font-size:14px;}
.btn-primary{background:var(--blue);color:#fff;box-shadow:0 8px 18px rgba(31,95,214,.22);}
.btn-primary:hover{background:var(--blue-dark);color:#fff;transform:translateY(-1px);}
.btn-outline{background:var(--white);color:var(--blue);border-color:var(--blue);}
.btn-outline:hover{background:var(--blue-soft);color:var(--blue);transform:translateY(-1px);}
.btn-ghost{background:rgba(255,255,255,.08);color:#fff;border-color:rgba(255,255,255,.55);}
.btn-ghost:hover{background:rgba(255,255,255,.18);color:#fff;transform:translateY(-1px);}
.text-link{display:inline-flex;align-items:center;gap:6px;font-weight:600;font-size:15px;}
.text-link i{font-size:12px;transition:transform .2s ease;}
.text-link:hover i{transform:translateX(3px);}

/* tags / badges */
.tag{
  display:inline-flex;align-items:center;gap:6px;
  border-radius:var(--r-pill);padding:4px 12px;
  font-size:12.5px;background:var(--teal-soft);color:var(--teal-deep);
}
.tag.on-dark{background:rgba(255,255,255,.14);color:#fff;}
.tag.accent{background:#FFF0E9;color:#C6481A;}

/* ---------- hero ---------- */
.hero-cat{
  position:relative;overflow:hidden;color:#fff;
  background-image:linear-gradient(90deg,rgba(14,42,78,.94) 0%,rgba(14,42,78,.86) 52%,rgba(14,42,78,.72) 100%),url("/assets/images/backpic/back-2.webp");
  background-size:cover;background-position:center;
  padding:44px 0 52px;
}
.hero-cat::after{
  content:"";position:absolute;inset:0;pointer-events:none;opacity:.08;
  background-image:linear-gradient(rgba(255,255,255,.9) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.9) 1px,transparent 1px);
  background-size:64px 64px;
}
.hero-cat .container{position:relative;z-index:2;}
.breadcrumb{display:flex;flex-wrap:wrap;gap:8px;font-size:13px;color:rgba(255,255,255,.72);margin-bottom:18px;}
.breadcrumb a{color:rgba(255,255,255,.82);}
.breadcrumb a:hover{color:#fff;text-decoration:underline;}
.breadcrumb .sep{opacity:.6;}
.hero-cat h1{font-size:40px;line-height:1.25;color:#fff;margin-bottom:16px;}
.hero-cat .hero-sub{max-width:760px;font-size:16px;line-height:1.85;color:rgba(255,255,255,.86);margin-bottom:26px;}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-bottom:24px;}
.hero-facts{display:flex;flex-wrap:wrap;gap:10px;}

/* ---------- metrics ---------- */
.metrics{background:var(--deep);color:#fff;padding:44px 0;}
.metrics-grid{display:grid;grid-template-columns:repeat(4,1fr);}
.metric{padding:4px 24px;border-left:1px solid rgba(255,255,255,.14);}
.metric:first-child{border-left:0;padding-left:0;}
.metric strong{
  display:block;font-family:Inter,"DIN Alternate",system-ui,sans-serif;
  font-size:34px;line-height:1.2;color:var(--teal-light);margin-bottom:6px;letter-spacing:.5px;
}
.metric span{font-size:13px;line-height:1.7;color:rgba(255,255,255,.78);}

/* ---------- wide visual + scenarios ---------- */
.visual-block{position:relative;border-radius:16px;overflow:hidden;box-shadow:var(--sh-1);border:1px solid var(--line);}
.visual-block img{width:100%;aspect-ratio:16/6;object-fit:cover;}
.visual-caption{
  position:absolute;left:0;right:0;bottom:0;
  display:flex;flex-wrap:wrap;align-items:center;gap:12px;
  padding:18px 22px;
  background:linear-gradient(180deg,rgba(14,42,78,0) 0%,rgba(14,42,78,.86) 100%);
  color:#fff;font-size:14px;
}
.visual-caption strong{font-size:15px;font-weight:600;}

.scene-grid{margin-top:32px;}
.scene-card{
  height:100%;background:var(--white);border:1px solid var(--line);
  border-radius:var(--r-card);box-shadow:var(--sh-1);
  padding:24px 22px;transition:transform .22s ease,box-shadow .22s ease,border-color .22s ease;
}
.scene-card:hover{transform:translateY(-2px);box-shadow:var(--sh-2);border-color:var(--blue-line);}
.scene-card i{color:var(--teal);font-size:20px;margin-bottom:12px;display:block;}
.scene-card h3{font-size:18px;margin-bottom:8px;}
.scene-card p{font-size:14.5px;color:var(--muted);margin:0;}

/* ---------- fold groups ---------- */
.fold-list{display:flex;flex-direction:column;gap:14px;}
.fold-item{
  background:var(--white);border:1px solid var(--line);border-radius:var(--r-card);
  box-shadow:var(--sh-1);overflow:hidden;
}
.fold-item summary{
  display:flex;align-items:center;gap:16px;
  min-height:64px;padding:16px 22px;cursor:pointer;list-style:none;
  transition:background-color .2s ease;
}
.fold-item summary::-webkit-details-marker{display:none;}
.fold-item summary:hover{background:var(--blue-soft);}
.fold-item[open] summary{background:var(--page);border-bottom:1px solid var(--line);}
.fold-index{
  flex:0 0 auto;font-family:Inter,"DIN Alternate",system-ui,sans-serif;
  font-size:14px;font-weight:700;color:var(--blue);
  background:var(--blue-soft);border-radius:8px;padding:6px 10px;
}
.fold-title{flex:1 1 auto;font-size:17px;font-weight:600;}
.fold-title em{display:block;font-style:normal;font-size:13px;font-weight:400;color:var(--muted);margin-top:2px;}
.fold-plus{position:relative;flex:0 0 auto;width:22px;height:22px;}
.fold-plus::before,.fold-plus::after{content:"";position:absolute;background:var(--blue);border-radius:2px;}
.fold-plus::before{left:4px;right:4px;top:10px;height:2px;}
.fold-plus::after{top:4px;bottom:4px;left:10px;width:2px;transition:transform .22s ease;}
.fold-item[open] .fold-plus::after{transform:scaleY(0);}
.fold-body{padding:20px 22px 24px 62px;}
.fold-body p{color:var(--muted);font-size:15px;}
.dot-list{margin-top:12px;display:flex;flex-direction:column;gap:10px;}
.dot-list li{position:relative;padding-left:20px;font-size:14.5px;color:var(--muted);}
.dot-list li::before{
  content:"";position:absolute;left:0;top:.72em;width:7px;height:7px;border-radius:50%;
  background:var(--blue);box-shadow:0 0 0 3px var(--blue-soft);
}

/* ---------- spec table ---------- */
.table-scroll{overflow-x:auto;border-radius:var(--r-card);box-shadow:var(--sh-1);border:1px solid var(--line);background:var(--white);}
table.spec-table{width:100%;min-width:760px;border-collapse:collapse;}
table.spec-table th{
  background:var(--blue-soft);color:var(--ink);
  font-size:14px;letter-spacing:.5px;text-align:left;
  padding:15px 20px;border-bottom:1px solid var(--line);white-space:nowrap;
}
table.spec-table td{
  padding:15px 20px;font-size:14.5px;color:var(--muted);
  border-top:1px solid var(--line);vertical-align:top;
}
table.spec-table tbody tr:nth-child(even){background:#FAFCFF;}
table.spec-table td:first-child{color:var(--ink);font-weight:600;}
.table-note{font-size:13px;color:var(--muted);margin-top:14px;}

/* ---------- faq ---------- */
.faq-list{display:flex;flex-direction:column;gap:12px;max-width:920px;}
.faq-item{
  background:var(--white);border:1px solid var(--line);
  border-radius:var(--r-card);box-shadow:var(--sh-1);overflow:hidden;
}
.faq-item summary{
  display:flex;align-items:center;gap:14px;
  min-height:60px;padding:16px 22px;cursor:pointer;list-style:none;font-size:16px;font-weight:600;
  transition:background-color .2s ease;
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary:hover{background:var(--blue-soft);}
.faq-item[open] summary{background:var(--page);border-bottom:1px solid var(--line);}
.faq-item summary .fold-plus{margin-left:auto;}
.faq-body{padding:18px 22px 22px;font-size:15px;color:var(--muted);}

/* ---------- cta ---------- */
.cta-band{padding:0 0 88px;}
.cta-box{
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:26px;
  background:var(--white);border:1px solid var(--blue);border-radius:18px;
  padding:38px 40px;box-shadow:var(--sh-1);
}
.cta-box h2{font-size:26px;margin-bottom:10px;}
.cta-box p{color:var(--muted);max-width:640px;margin:0;}
.cta-actions{display:flex;flex-wrap:wrap;align-items:center;gap:16px;}
.cta-phone{display:inline-flex;align-items:center;gap:8px;font-weight:700;font-size:17px;color:var(--ink);}
.cta-phone i{color:var(--orange);}

/* ---------- footer ---------- */
.site-footer{background:var(--white);border-top:1px solid var(--line);padding:56px 0 0;margin-top:8px;}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.3fr;gap:32px;}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:14px;}
.footer-brand strong{font-size:16px;}
.site-footer p{font-size:14px;color:var(--muted);}
.site-footer h4{font-size:15px;margin-bottom:14px;}
.footer-links{display:flex;flex-direction:column;gap:10px;}
.footer-links a{font-size:14px;color:var(--muted);display:inline-flex;align-items:center;min-height:32px;}
.footer-links a:hover{color:var(--blue);}
.footer-contact{display:flex;flex-direction:column;gap:12px;}
.footer-contact li{display:flex;gap:10px;font-size:14px;color:var(--muted);line-height:1.7;}
.footer-contact i{color:var(--blue);margin-top:.35em;}
.footer-bottom{
  display:flex;flex-wrap:wrap;justify-content:space-between;gap:12px;
  border-top:1px solid var(--line);margin-top:40px;padding:20px 0 26px;
  font-size:13px;color:var(--muted);
}
.footer-bottom a{color:var(--muted);}
.footer-bottom a:hover{color:var(--blue);}

/* ---------- responsive ---------- */
@media (max-width:1023px){
  :root{--sec:64px;}
  h2{font-size:26px;}
  .hero-cat h1{font-size:34px;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px;}
  .metrics-grid{grid-template-columns:repeat(2,1fr);gap:26px 0;}
  .metric:nth-child(3){border-left:0;padding-left:0;}
}
@media (max-width:900px){
  .header-inner{flex-wrap:wrap;gap:12px;padding:12px 0;min-height:0;}
  .main-nav{
    order:3;width:100%;overflow-x:auto;margin-left:0;
    padding-bottom:4px;gap:4px;scrollbar-width:thin;
  }
  .nav-link{white-space:nowrap;padding:0 12px;}
  .nav-link.active::after{left:12px;right:12px;bottom:2px;}
  .mega-panel{width:min(94vw,560px);}
}
@media (max-width:767px){
  :root{--sec:56px;}
  h2{font-size:24px;}
  h3{font-size:18px;}
  .container{padding:0 16px;}
  .hero-cat{padding:34px 0 40px;}
  .hero-cat h1{font-size:30px;}
  .hero-actions .btn{width:100%;}
  .visual-block img{aspect-ratio:16/10;}
  .visual-caption{padding:14px 16px;}
  .fold-body{padding:18px 18px 20px;}
  .fold-item summary{padding:14px 16px;gap:12px;}
  .fold-title{font-size:15.5px;}
  .faq-item summary{padding:14px 16px;font-size:15px;}
  .faq-body{padding:16px;}
  .cta-box{padding:26px 20px;}
  .cta-actions{width:100%;}
  .cta-actions .btn{width:100%;}
  .footer-grid{grid-template-columns:1fr;gap:32px;}
}
@media (max-width:520px){
  .mega-panel{grid-template-columns:1fr;right:-8px;width:calc(100vw - 34px);}
  .metrics-grid{grid-template-columns:1fr;gap:22px;}
  .metric{padding:0;border-left:0;border-top:1px solid rgba(255,255,255,.14);padding-top:18px;}
  .metric:first-child{border-top:0;padding-top:0;}
  .fold-index{display:none;}
}