/* roulang page: index */
:root{
  --brand:#2C6BB0;
  --brand-dark:#1B4A7A;
  --brand-soft:#EDF3FA;
  --green:#3F8F6B;
  --green-soft:#EAF4EF;
  --orange:#D97A2B;
  --bg:#F5F7F8;
  --card:#FFFFFF;
  --text:#16212B;
  --muted:#56656F;
  --line:#E4EAEE;
  --footer:#101C26;
  --r-card:14px;
  --r-btn:10px;
  --r-badge:999px;
  --r-big:20px;
  --sh-1:0 1px 2px rgba(22,33,43,.04),0 8px 24px rgba(22,33,43,.06);
  --sh-2:0 16px 40px rgba(44,107,176,.12);
  --sh-3:0 24px 64px rgba(22,33,43,.18);
  --gap-section:96px;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei","Source Han Sans SC","Helvetica Neue",Arial,sans-serif;
  font-size:16px;
  line-height:1.75;
  color:var(--text);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border:0;}
a{color:var(--brand);text-decoration:none;transition:color .18s ease;}
a:hover{color:var(--brand-dark);}
h1,h2,h3,h4,p,ul,ol,dl,dd,figure{margin:0;}
ul,ol{padding-left:1.15em;}
button,input,select,textarea{font:inherit;color:inherit;}
button{cursor:pointer;}
:focus-visible{outline:2px solid rgba(44,107,176,.55);outline-offset:2px;border-radius:4px;}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 16px;}
.section{padding:var(--gap-section) 0;}
.section-sm{padding:56px 0;}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;font-weight:600;letter-spacing:.02em;
  color:var(--brand);background:var(--brand-soft);
  border-radius:var(--r-badge);padding:6px 14px;
}
.section-head{max-width:720px;margin-bottom:44px;}
.section-head h2{font-size:28px;font-weight:600;line-height:1.4;margin:16px 0 12px;}
.section-head p{color:var(--muted);font-size:16px;}
.section-head.center{margin-left:auto;margin-right:auto;text-align:center;}
.muted{color:var(--muted);}
.small{font-size:13px;line-height:1.7;}
.tnum{font-variant-numeric:tabular-nums;font-feature-settings:"tnum";}

/* ============ Header / Nav ============ */
.site-header{
  position:sticky;top:0;z-index:80;
  background:rgba(255,255,255,.96);
  border-bottom:1px solid var(--line);
  transition:height .22s ease,box-shadow .22s ease;
}
.site-header.scrolled{box-shadow:0 6px 20px rgba(22,33,43,.06);}
.nav-wrap{display:flex;align-items:center;gap:24px;height:72px;transition:height .22s ease;}
.site-header.scrolled .nav-wrap{height:60px;}
.logo{display:flex;align-items:center;gap:10px;flex-shrink:0;color:var(--text);}
.logo:hover{color:var(--text);}
.logo-mark{
  width:38px;height:38px;border-radius:11px;flex-shrink:0;
  background:linear-gradient(150deg,var(--brand) 0%,var(--brand-dark) 100%);
  display:flex;align-items:center;justify-content:center;
  box-shadow:0 4px 12px rgba(44,107,176,.24);
}
.logo-mark svg{width:20px;height:20px;}
.logo-text{display:flex;flex-direction:column;line-height:1.2;}
.logo-text b{font-size:17px;font-weight:700;letter-spacing:-.01em;}
.logo-text span{font-size:11.5px;color:var(--muted);letter-spacing:.04em;}
.nav-menu{display:flex;align-items:center;gap:4px;margin-left:auto;}
.nav-menu a{
  display:block;padding:9px 14px;border-radius:var(--r-badge);
  font-size:15px;color:var(--text);position:relative;white-space:nowrap;
}
.nav-menu a:hover{background:#F0F3F5;color:var(--brand-dark);}
.nav-menu a.active{background:var(--brand-soft);color:var(--brand);font-weight:600;}
.nav-menu a.active::after{
  content:"";position:absolute;left:14px;right:14px;bottom:1px;height:2px;
  background:var(--brand);border-radius:2px;
}
.nav-cta{margin-left:12px;flex-shrink:0;}
.nav-toggle{
  display:none;margin-left:auto;width:42px;height:42px;border-radius:11px;
  border:1px solid var(--line);background:#fff;align-items:center;justify-content:center;
}
.nav-toggle span{display:block;width:18px;height:2px;background:var(--text);border-radius:2px;position:relative;}
.nav-toggle span::before,.nav-toggle span::after{
  content:"";position:absolute;left:0;width:18px;height:2px;background:var(--text);border-radius:2px;
}
.nav-toggle span::before{top:-6px;}
.nav-toggle span::after{top:6px;}
@media (max-width:991px){
  .nav-menu{
    position:fixed;top:72px;left:0;right:0;bottom:0;
    flex-direction:column;align-items:stretch;gap:6px;margin:0;
    background:#fff;padding:16px 16px 96px;overflow-y:auto;
    transform:translateX(100%);transition:transform .26s ease;z-index:70;
  }
  .nav-menu.open{transform:translateX(0);}
  .nav-menu a{padding:14px 16px;border-radius:12px;font-size:16px;}
  .nav-menu a.active::after{display:none;}
  .nav-cta{display:none;}
  .nav-toggle{display:flex;}
  .drawer-cta{display:block !important;}
}
.drawer-cta{
  display:none;position:fixed;left:16px;right:16px;bottom:16px;z-index:71;
}

/* ============ Buttons ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:46px;padding:0 22px;border-radius:var(--r-btn);
  font-size:15px;font-weight:600;border:1.5px solid transparent;
  transition:transform .18s ease,box-shadow .18s ease,background .18s ease,color .18s ease;
  white-space:nowrap;
}
.btn-primary{background:var(--brand);color:#fff;box-shadow:0 6px 16px rgba(44,107,176,.22);}
.btn-primary:hover{background:var(--brand-dark);color:#fff;transform:translateY(-1px);box-shadow:var(--sh-2);}
.btn-primary:active{transform:translateY(0);box-shadow:0 3px 10px rgba(44,107,176,.2);}
.btn-ghost{background:#fff;border-color:var(--brand);color:var(--brand);}
.btn-ghost:hover{background:var(--brand-soft);color:var(--brand-dark);transform:translateY(-1px);}
.btn-ghost:active{transform:translateY(0);}
.btn-orange{background:var(--orange);color:#fff;}
.btn-orange:hover{background:#C06A22;color:#fff;transform:translateY(-1px);}
.btn-block{width:100%;}
.btn-sm{height:40px;padding:0 16px;font-size:14px;}
.btn[disabled]{opacity:.5;cursor:not-allowed;transform:none;}

/* ============ Hero ============ */
.hero{
  background:
    radial-gradient(900px 380px at 88% -8%,rgba(44,107,176,.10),transparent 62%),
    radial-gradient(720px 320px at 4% 108%,rgba(63,143,107,.10),transparent 60%),
    #fff;
  border-bottom:1px solid var(--line);
}
.hero-inner{
  display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1.02fr);
  gap:56px;align-items:center;min-height:600px;padding:56px 0 64px;
}
.hero-copy h1{font-size:42px;line-height:1.28;font-weight:700;letter-spacing:-.01em;}
.hero-copy .sub{margin-top:16px;font-size:17px;color:var(--muted);max-width:520px;}
.hero-tags{display:flex;flex-wrap:wrap;gap:10px;margin-top:22px;}
.tag{
  display:inline-flex;align-items:center;gap:6px;
  padding:6px 13px;border-radius:var(--r-badge);
  background:var(--green-soft);color:#2F7154;font-size:13px;font-weight:600;
}
.tag.blue{background:var(--brand-soft);color:var(--brand);}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:30px;}
.hero-note{margin-top:18px;font-size:13px;color:var(--muted);}
.hero-visual{position:relative;min-height:430px;padding:22px;}
.hero-visual-bg{
  position:absolute;inset:0;border-radius:var(--r-big);
  background-size:cover;background-position:center;
  border:1px solid var(--line);opacity:.96;
}
.hero-visual-bg::after{
  content:"";position:absolute;inset:0;border-radius:var(--r-big);
  background:linear-gradient(180deg,rgba(16,28,38,.18),rgba(16,28,38,.42));
}
.device{
  position:relative;z-index:2;border-radius:16px;overflow:hidden;
  background:#fff;box-shadow:var(--sh-3);border:1px solid rgba(255,255,255,.6);
  max-width:400px;margin:14px auto 0;
}
.device-bar{
  height:34px;background:#F4F6F8;border-bottom:1px solid var(--line);
  display:flex;align-items:center;gap:6px;padding:0 12px;
}
.device-bar i{width:9px;height:9px;border-radius:50%;background:#D5DCE1;display:block;}
.device img{width:100%;aspect-ratio:16/10;object-fit:cover;}
.float-card{
  position:absolute;z-index:3;background:#fff;border-radius:12px;
  box-shadow:var(--sh-2);border:1px solid var(--line);
  padding:12px 14px;min-width:158px;
}
.float-card b{display:block;font-size:20px;font-weight:700;color:var(--brand);line-height:1.2;}
.float-card span{font-size:12.5px;color:var(--muted);}
.float-card-a{top:8px;left:-8px;}
.float-card-b{bottom:6px;right:-6px;}
.float-card-b b{color:var(--green);}

/* ============ Pain points ============ */
.pain-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:20px;}
.pain-card{
  display:flex;gap:16px;background:var(--card);border:1px solid var(--line);
  border-radius:var(--r-card);padding:24px;box-shadow:var(--sh-1);
  transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
}
.pain-card:hover{transform:translateY(-3px);box-shadow:var(--sh-2);border-color:rgba(44,107,176,.35);}
.pain-num{
  flex-shrink:0;width:34px;height:34px;border-radius:10px;
  background:var(--brand-soft);color:var(--brand);
  display:flex;align-items:center;justify-content:center;font-weight:700;font-size:14px;
}
.pain-card h3{font-size:17px;font-weight:600;margin-bottom:6px;}
.pain-card p{font-size:14.5px;color:var(--muted);}

/* ============ Solution asymmetric grid ============ */
.solution-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:20px;}
.sol-main{
  grid-column:span 2;display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);
  background:var(--card);border:1px solid var(--line);border-radius:var(--r-big);
  overflow:hidden;box-shadow:var(--sh-1);transition:transform .2s ease,box-shadow .2s ease;
}
.sol-main:hover{transform:translateY(-3px);box-shadow:var(--sh-2);}
.sol-main figure{margin:0;height:100%;}
.sol-main img{width:100%;height:100%;min-height:280px;object-fit:cover;}
.sol-main-body{padding:28px;display:flex;flex-direction:column;justify-content:center;}
.sol-main-body h3{font-size:21px;font-weight:600;margin:12px 0 10px;}
.sol-main-body p{font-size:15px;color:var(--muted);}
.text-link{
  display:inline-flex;align-items:center;gap:6px;margin-top:16px;
  font-size:14.5px;font-weight:600;color:var(--brand);
  text-decoration:underline;text-underline-offset:4px;text-decoration-thickness:1px;
}
.text-link:hover{text-decoration-thickness:2px;color:var(--brand-dark);}
.sol-card{
  background:var(--card);border:1px solid var(--line);border-radius:var(--r-card);
  padding:24px;box-shadow:var(--sh-1);
  transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
}
.sol-card:hover{transform:translateY(-3px);box-shadow:var(--sh-2);border-color:rgba(44,107,176,.35);}
.sol-icon{
  width:42px;height:42px;border-radius:12px;background:var(--brand-soft);
  display:flex;align-items:center;justify-content:center;margin-bottom:14px;
}
.sol-icon svg{width:21px;height:21px;stroke:var(--brand);}
.sol-card h3{font-size:17px;font-weight:600;margin-bottom:8px;}
.sol-card p{font-size:14.5px;color:var(--muted);}

/* ============ Stats ============ */
.stats{background:var(--brand-soft);border-top:1px solid var(--line);border-bottom:1px solid var(--line);}
.stats-grid{
  display:grid;grid-template-columns:repeat(4,minmax(0,1fr));
  background:#fff;border:1px solid var(--line);border-radius:var(--r-big);overflow:hidden;
}
.stat{padding:30px 26px;border-right:1px solid var(--line);}
.stat:last-child{border-right:0;}
.stat b{display:block;font-size:36px;font-weight:700;color:var(--brand-dark);line-height:1.15;letter-spacing:-.01em;}
.stat .unit{font-size:15px;font-weight:600;color:var(--brand);margin-left:4px;}
.stat span{display:block;margin-top:8px;font-size:13.5px;color:var(--muted);}
@media (max-width:991px){
  .stats-grid{grid-template-columns:repeat(2,minmax(0,1fr));}
  .stat:nth-child(2){border-right:0;}
  .stat:nth-child(1),.stat:nth-child(2){border-bottom:1px solid var(--line);}
}

/* ============ Steps ============ */
.steps{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:20px;counter-reset:step;}
.step{
  position:relative;background:var(--card);border:1px solid var(--line);
  border-radius:var(--r-card);padding:26px 22px;box-shadow:var(--sh-1);
}
.step::before{
  counter-increment:step;content:counter(step,decimal-leading-zero);
  display:block;font-size:13px;font-weight:700;color:var(--green);
  background:var(--green-soft);border-radius:var(--r-badge);
  padding:3px 11px;width:fit-content;margin-bottom:14px;
}
.step h3{font-size:16.5px;font-weight:600;margin-bottom:8px;}
.step p{font-size:14px;color:var(--muted);}

/* ============ CMS latest ============ */
.latest-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:36px;flex-wrap:wrap;}
.post-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px;}
.post-card{
  display:flex;flex-direction:column;overflow:hidden;
  background:var(--card);border:1px solid var(--line);border-radius:var(--r-card);
  box-shadow:var(--sh-1);transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
}
.post-card:hover{transform:translateY(-3px);box-shadow:var(--sh-2);border-color:rgba(44,107,176,.35);}
.post-thumb{position:relative;aspect-ratio:16/9;overflow:hidden;background:#E9EEF2;}
.post-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .35s ease;}
.post-card:hover .post-thumb img{transform:scale(1.04);}
.post-badge{
  position:absolute;left:12px;top:12px;background:rgba(255,255,255,.94);
  color:var(--brand);font-size:12.5px;font-weight:600;
  padding:4px 11px;border-radius:var(--r-badge);
}
.post-body{padding:20px 22px 22px;display:flex;flex-direction:column;flex:1;}
.post-body h3{font-size:16.5px;font-weight:600;line-height:1.5;margin-bottom:10px;}
.post-body h3 a{color:var(--text);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.post-body h3 a:hover{color:var(--brand);}
.post-body p{
  font-size:14px;color:var(--muted);
  display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden;
}
.post-meta{
  margin-top:auto;padding-top:16px;display:flex;align-items:center;justify-content:space-between;
  font-size:13px;color:var(--muted);border-top:1px dashed var(--line);
}
.empty-state{
  grid-column:1/-1;text-align:center;padding:56px 24px;
  background:var(--card);border:1px dashed var(--line);border-radius:var(--r-big);
}
.empty-state svg{width:48px;height:48px;stroke:#A9B6BF;margin:0 auto 14px;}
.empty-state p{color:var(--muted);font-size:15px;margin-bottom:16px;}

/* ============ FAQ ============ */
.faq-wrap{max-width:900px;margin:0 auto;}
.faq-item{
  background:var(--card);border:1px solid var(--line);border-radius:var(--r-card);
  margin-bottom:12px;overflow:hidden;transition:border-color .2s ease,box-shadow .2s ease;
}
.faq-item[open]{border-color:rgba(44,107,176,.4);box-shadow:var(--sh-1);}
.faq-item summary{
  list-style:none;cursor:pointer;padding:20px 22px;display:flex;align-items:center;gap:14px;
  font-size:16.5px;font-weight:600;position:relative;
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary::before{
  content:"";width:4px;align-self:stretch;min-height:22px;border-radius:3px;
  background:var(--line);flex-shrink:0;transition:background .2s ease;
}
.faq-item[open] summary::before{background:var(--brand);}
.faq-icon{
  margin-left:auto;width:26px;height:26px;flex-shrink:0;border-radius:50%;
  background:var(--brand-soft);display:flex;align-items:center;justify-content:center;
  transition:transform .24s ease;
}
.faq-icon svg{width:13px;height:13px;stroke:var(--brand);}
.faq-item[open] .faq-icon{transform:rotate(180deg);}
.faq-body{padding:0 22px 22px 40px;color:var(--muted);font-size:15px;}

/* ============ CTA ============ */
.cta-band{
  background:linear-gradient(135deg,var(--brand-dark) 0%,var(--brand) 100%);
  border-radius:var(--r-big);padding:48px;color:#fff;
  display:flex;align-items:center;justify-content:space-between;gap:36px;flex-wrap:wrap;
  box-shadow:0 22px 48px rgba(27,74,122,.22);
}
.cta-band h2{font-size:26px;font-weight:600;margin-bottom:10px;}
.cta-band p{color:rgba(255,255,255,.85);font-size:15.5px;max-width:560px;}
.cta-actions{display:flex;gap:14px;flex-wrap:wrap;}
.cta-band .btn-ghost{background:transparent;border-color:rgba(255,255,255,.7);color:#fff;}
.cta-band .btn-ghost:hover{background:rgba(255,255,255,.14);color:#fff;}
.cta-band .btn-orange{box-shadow:0 8px 20px rgba(217,122,43,.3);}

/* ============ Privacy / footer ============ */
.privacy-line{
  font-size:13px;color:var(--muted);padding:22px 0 0;border-top:1px solid var(--line);
  margin-top:44px;
}
.site-footer{background:var(--footer);color:rgba(255,255,255,.72);margin-top:var(--gap-section);}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.1fr;gap:36px;padding:64px 0 40px;}
.footer-brand .logo-text b{color:#fff;}
.footer-brand .logo-text span{color:rgba(255,255,255,.5);}
.footer-brand p{margin-top:16px;font-size:14px;line-height:1.8;color:rgba(255,255,255,.62);max-width:300px;}
.footer-col h4{font-size:14px;font-weight:600;color:#fff;margin-bottom:16px;letter-spacing:.02em;}
.footer-col ul{list-style:none;padding:0;margin:0;}
.footer-col li{margin-bottom:10px;}
.footer-col a{color:rgba(255,255,255,.68);font-size:14px;}
.footer-col a:hover{color:#8FD3B4;}
.footer-col .domain{color:#A8CFE9;font-size:14px;}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.1);padding:20px 0;
  display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:13px;color:rgba(255,255,255,.5);
}
.footer-bottom a{color:rgba(255,255,255,.6);}
.footer-bottom a:hover{color:#8FD3B4;}

/* ============ Float button + modal ============ */
.float-btn{
  position:fixed;right:24px;bottom:24px;z-index:60;
  display:inline-flex;align-items:center;gap:8px;height:52px;padding:0 22px;
  border-radius:var(--r-badge);background:var(--brand);color:#fff;font-weight:600;font-size:15px;
  border:0;box-shadow:0 12px 28px rgba(44,107,176,.34);
  transition:transform .18s ease,background .18s ease,box-shadow .18s ease;
}
.float-btn:hover{background:var(--brand-dark);transform:translateY(-2px);box-shadow:0 18px 36px rgba(44,107,176,.36);}
.float-btn:active{transform:translateY(0);}
.float-btn svg{width:18px;height:18px;stroke:#fff;}
.modal-mask{
  position:fixed;inset:0;z-index:90;background:rgba(22,33,43,.45);
  display:none;align-items:center;justify-content:center;padding:20px;
}
.modal-mask.open{display:flex;}
.modal{
  width:640px;max-width:100%;max-height:90vh;overflow-y:auto;background:#fff;
  border-radius:16px;box-shadow:var(--sh-3);padding:28px;
}
.modal-head{display:flex;align-items:flex-start;justify-content:space-between;gap:16px;margin-bottom:20px;}
.modal-head h3{font-size:20px;font-weight:600;}
.modal-head p{font-size:13.5px;color:var(--muted);margin-top:6px;}
.modal-close{
  width:44px;height:44px;flex-shrink:0;border-radius:12px;border:1px solid var(--line);
  background:#fff;display:flex;align-items:center;justify-content:center;
  transition:background .18s ease;
}
.modal-close:hover{background:#F0F3F5;}
.modal-close svg{width:16px;height:16px;stroke:var(--text);}
.field{margin-bottom:16px;}
.field label{display:block;font-size:13.5px;font-weight:600;margin-bottom:7px;}
.field input,.field select,.field textarea{
  width:100%;height:48px;padding:0 14px;border-radius:var(--r-btn);
  border:1px solid var(--line);background:#fff;font-size:15px;
  transition:border-color .18s ease,box-shadow .18s ease;
}
.field textarea{height:auto;padding:12px 14px;min-height:96px;resize:vertical;line-height:1.7;}
.field input:focus,.field select:focus,.field textarea:focus{
  outline:none;border-color:var(--brand);box-shadow:0 0 0 3px rgba(44,107,176,.15);
}
.field .err{display:none;font-size:12.5px;color:#C4552B;margin-top:6px;}
.field.invalid input,.field.invalid select{border-color:#D97A2B;}
.field.invalid .err{display:block;}
.check-row{display:flex;align-items:flex-start;gap:10px;font-size:13.5px;color:var(--muted);margin:6px 0 18px;}
.check-row input{width:17px;height:17px;margin-top:3px;flex-shrink:0;accent-color:var(--brand);}

/* ============ Responsive ============ */
@media (max-width:1279px){
  :root{--gap-section:80px;}
}
@media (max-width:1099px){
  .hero-inner{grid-template-columns:1fr;gap:40px;min-height:auto;padding:44px 0 56px;}
  .hero-copy h1{font-size:36px;}
  .hero-visual{min-height:360px;max-width:620px;}
}
@media (max-width:991px){
  :root{--gap-section:64px;}
  .solution-grid{grid-template-columns:repeat(2,minmax(0,1fr));}
  .sol-main{grid-column:span 2;grid-template-columns:1fr;}
  .sol-main img{min-height:220px;}
  .steps{grid-template-columns:repeat(2,minmax(0,1fr));}
  .post-grid{grid-template-columns:repeat(2,minmax(0,1fr));}
  .footer-grid{grid-template-columns:repeat(2,minmax(0,1fr));padding:48px 0 32px;}
}
@media (max-width:767px){
  :root{--gap-section:48px;}
  .section{padding:var(--gap-section) 0;}
  .container{padding:0 16px;}
  .hero-copy h1{font-size:29px;}
  .hero-copy .sub{font-size:16px;}
  .section-head h2{font-size:23px;}
  .pain-grid{grid-template-columns:1fr;}
  .solution-grid{grid-template-columns:1fr;}
  .sol-main{grid-column:span 1;}
  .steps{grid-template-columns:1fr;}
  .post-grid{grid-template-columns:1fr;}
  .stat b{font-size:29px;}
  .cta-band{padding:32px 24px;}
  .cta-band h2{font-size:22px;}
  .float-btn{right:16px;bottom:16px;height:48px;width:48px;padding:0;justify-content:center;}
  .float-btn span{display:none;}
  .modal-mask{padding:0;align-items:flex-end;}
  .modal{width:100%;border-radius:16px 16px 0 0;max-height:92vh;}
  .footer-grid{grid-template-columns:1fr;gap:28px;}
  .nav-wrap{height:64px;}
  .site-header.scrolled .nav-wrap{height:64px;}
  .nav-menu{top:64px;}
  .logo-text b{font-size:15.5px;}
  .logo-text span{font-size:10.5px;}
}
@media (max-width:520px){
  .hero-actions .btn{width:100%;}
  .footer-bottom{flex-direction:column;align-items:flex-start;}
}

/* roulang page: category1 */
:root{
  --primary:#2C6BB0;
  --primary-dark:#1B4A7A;
  --primary-light:#EDF3FA;
  --green:#3F8F6B;
  --green-light:#EAF4EF;
  --orange:#D97A2B;
  --bg:#F5F7F8;
  --card:#FFFFFF;
  --ink:#16212B;
  --muted:#56656F;
  --line:#E4EAEE;
  --ink-deep:#101C26;
  --radius-card:14px;
  --radius-btn:10px;
  --radius-lg:20px;
  --shadow-1:0 1px 2px rgba(22,33,43,.04),0 8px 24px rgba(22,33,43,.06);
  --shadow-2:0 16px 40px rgba(44,107,176,.12);
  --shadow-3:0 24px 64px rgba(22,33,43,.18);
  --gap-section:88px;
  --font:-apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei","Source Han Sans SC","Hiragino Sans GB",sans-serif;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:var(--font);
  font-size:16px;
  line-height:1.75;
  color:var(--ink);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;height:auto;}
a{color:var(--primary);text-decoration:none;text-underline-offset:4px;transition:color .2s ease,background-color .2s ease,border-color .2s ease;}
a:hover{text-decoration:underline;}
button,input,select,textarea{font:inherit;color:inherit;}
h1,h2,h3,h4,p,ul,ol{margin:0;}
ul,ol{padding:0;list-style:none;}
:focus-visible{outline:2px solid rgba(44,107,176,.55);outline-offset:2px;border-radius:6px;}

.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px;}
@media (max-width:1279px){.container{padding:0 32px;}}
@media (max-width:991px){.container{padding:0 24px;}}
@media (max-width:767px){.container{padding:0 16px;}}

/* ===== header ===== */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(255,255,255,.92);
  border-bottom:1px solid var(--line);
  transition:height .25s ease,box-shadow .25s ease;
}
.header-inner{
  display:flex;align-items:center;gap:28px;
  height:72px;
  transition:height .25s ease;
}
.site-header.is-scrolled .header-inner{height:60px;}
.site-header.is-scrolled{box-shadow:0 6px 20px rgba(22,33,43,.06);}
.logo{display:flex;align-items:center;gap:10px;text-decoration:none;flex:0 0 auto;}
.logo:hover{text-decoration:none;}
.logo-mark{
  width:38px;height:38px;border-radius:12px;
  background:var(--primary);
  display:flex;align-items:center;justify-content:center;
  box-shadow:0 6px 16px rgba(44,107,176,.28);
}
.logo-mark svg{width:22px;height:22px;}
.logo-text{display:flex;flex-direction:column;line-height:1.15;}
.logo-text b{font-size:17px;font-weight:700;color:var(--ink);letter-spacing:-.01em;}
.logo-text span{font-size:12px;color:var(--muted);letter-spacing:.06em;}
.nav-menu{display:flex;align-items:center;gap:6px;margin-left:auto;}
.nav-menu a{
  display:inline-block;
  padding:8px 14px;
  font-size:15px;color:var(--muted);
  border-radius:999px;
  border-bottom:2px solid transparent;
  text-decoration:none;
  white-space:nowrap;
}
.nav-menu a:hover{background:#F0F3F5;color:var(--primary-dark);text-decoration:none;}
.nav-menu a.active{
  background:var(--primary-light);
  color:var(--primary-dark);
  font-weight:600;
  border-bottom-color:var(--primary);
  border-radius:999px 999px 10px 10px;
}
.nav-cta{
  flex:0 0 auto;
  display:inline-flex;align-items:center;gap:6px;
  background:var(--primary);color:#fff;
  font-size:14px;font-weight:600;
  padding:10px 18px;border-radius:var(--radius-btn);
  box-shadow:0 6px 16px rgba(44,107,176,.24);
  transition:transform .18s ease,background-color .18s ease,box-shadow .18s ease;
}
.nav-cta:hover{background:var(--primary-dark);color:#fff;text-decoration:none;transform:translateY(-1px);box-shadow:var(--shadow-2);}
.nav-cta:active{transform:translateY(0);}
.nav-toggle{
  display:none;
  width:44px;height:44px;margin-left:auto;
  background:#fff;border:1px solid var(--line);border-radius:12px;
  align-items:center;justify-content:center;cursor:pointer;
}
.nav-toggle svg{width:20px;height:20px;stroke:var(--ink);}
@media (max-width:1080px){
  .nav-menu{
    position:fixed;top:0;right:0;bottom:0;width:290px;
    background:#fff;flex-direction:column;align-items:stretch;
    gap:4px;margin:0;padding:80px 20px 100px;
    box-shadow:var(--shadow-3);
    transform:translateX(105%);
    transition:transform .28s ease;
    z-index:80;overflow-y:auto;
  }
  .nav-menu.is-open{transform:translateX(0);}
  .nav-menu a{padding:14px 16px;font-size:16px;border-radius:12px;}
  .nav-menu a.active{border-radius:12px;border-bottom-color:transparent;border-left:3px solid var(--primary);}
  .nav-toggle{display:flex;z-index:90;}
  .nav-cta{display:none;}
  .nav-scrim{
    position:fixed;inset:0;background:rgba(22,33,43,.45);
    opacity:0;visibility:hidden;transition:opacity .25s ease;z-index:70;
  }
  .nav-scrim.is-open{opacity:1;visibility:visible;}
  .nav-drawer-cta{
    display:block;position:absolute;bottom:0;left:0;right:0;
    padding:16px 20px;border-top:1px solid var(--line);background:#fff;
  }
  .nav-drawer-cta a{
    display:block;text-align:center;background:var(--primary);color:#fff;
    padding:14px;border-radius:var(--radius-btn);font-weight:600;
  }
}
@media (min-width:1081px){.nav-drawer-cta{display:none;}}

/* ===== breadcrumb ===== */
.breadcrumb{
  padding:18px 0 0;
  font-size:13px;color:var(--muted);
}
.breadcrumb ol{display:flex;flex-wrap:wrap;align-items:center;gap:8px;}
.breadcrumb li{display:flex;align-items:center;gap:8px;}
.breadcrumb li+li::before{content:"/";color:#B9C3CA;}
.breadcrumb a{color:var(--muted);}
.breadcrumb a:hover{color:var(--primary);}
.breadcrumb [aria-current]{color:var(--ink);font-weight:600;}

/* ===== hero ===== */
.page-hero{
  position:relative;
  margin-top:22px;
  border-radius:var(--radius-lg);
  overflow:hidden;
  background-image:linear-gradient(100deg,rgba(16,28,38,.86),rgba(27,74,122,.72)),url("/assets/images/backpic/back-1.webp");
  background-size:cover;background-position:center;
  color:#fff;
}
.page-hero-inner{
  display:grid;grid-template-columns:minmax(0,1.15fr) minmax(0,.85fr);
  gap:44px;align-items:center;
  padding:56px 48px;
}
.hero-badge{
  display:inline-flex;align-items:center;gap:8px;
  background:rgba(255,255,255,.14);
  border:1px solid rgba(255,255,255,.28);
  color:#E8F0F8;
  font-size:13px;padding:6px 14px;border-radius:999px;
  margin-bottom:18px;
}
.page-hero h1{
  font-size:clamp(28px,3.4vw,42px);
  line-height:1.28;font-weight:700;letter-spacing:-.01em;
}
.page-hero h1 em{font-style:normal;color:#BFE3D2;}
.page-hero .hero-sub{
  margin-top:16px;font-size:17px;color:#D7E3EE;max-width:560px;
}
.hero-tags{display:flex;flex-wrap:wrap;gap:10px;margin-top:22px;}
.hero-tags span{
  font-size:13px;padding:6px 13px;border-radius:999px;
  background:rgba(255,255,255,.1);border:1px solid rgba(255,255,255,.22);color:#EAF2F8;
}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:28px;}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  font-size:15px;font-weight:600;
  padding:12px 22px;border-radius:var(--radius-btn);
  border:1.5px solid transparent;cursor:pointer;
  transition:transform .18s ease,background-color .18s ease,box-shadow .18s ease,color .18s ease,border-color .18s ease;
}
.btn-primary{background:var(--primary);color:#fff;box-shadow:0 8px 20px rgba(44,107,176,.28);}
.btn-primary:hover{background:var(--primary-dark);color:#fff;text-decoration:none;transform:translateY(-1px);box-shadow:var(--shadow-2);}
.btn-primary:active{transform:translateY(0);box-shadow:0 4px 12px rgba(44,107,176,.24);}
.btn-ghost{background:transparent;color:#fff;border-color:rgba(255,255,255,.6);}
.btn-ghost:hover{background:rgba(255,255,255,.14);color:#fff;text-decoration:none;transform:translateY(-1px);}
.btn-outline{background:#fff;color:var(--primary);border-color:var(--primary);}
.btn-outline:hover{background:var(--primary-light);text-decoration:none;transform:translateY(-1px);}
.hero-panel{
  background:rgba(255,255,255,.96);
  border-radius:16px;padding:22px;
  box-shadow:var(--shadow-3);
  color:var(--ink);
}
.hero-panel h2{font-size:15px;font-weight:700;color:var(--primary-dark);}
.hero-panel ul{margin-top:14px;display:grid;gap:12px;}
.hero-panel li{display:flex;gap:10px;font-size:14px;color:var(--muted);}
.hero-panel li b{color:var(--ink);font-weight:600;}
.dot{
  flex:0 0 auto;width:22px;height:22px;border-radius:50%;
  background:var(--green-light);color:var(--green);
  display:flex;align-items:center;justify-content:center;
  font-size:12px;font-weight:700;margin-top:2px;
}
@media (max-width:991px){
  .page-hero-inner{grid-template-columns:1fr;padding:44px 32px;gap:32px;}
}
@media (max-width:767px){
  .page-hero-inner{padding:34px 22px;}
  .page-hero .hero-sub{font-size:16px;}
}

/* ===== 通用板块 ===== */
.section{padding-top:var(--gap-section);}
.section-head{max-width:720px;}
.section-head h2{font-size:clamp(22px,2.4vw,28px);font-weight:600;letter-spacing:-.01em;}
.section-head p{margin-top:12px;color:var(--muted);font-size:16px;}
.eyebrow{
  display:inline-block;font-size:13px;font-weight:600;color:var(--green);
  background:var(--green-light);padding:4px 12px;border-radius:999px;margin-bottom:14px;
}
@media (max-width:991px){.section{padding-top:64px;}}
@media (max-width:767px){.section{padding-top:48px;}}

/* ===== 左锚点 + 右步骤 ===== */
.split{
  display:grid;grid-template-columns:250px minmax(0,1fr);
  gap:44px;margin-top:40px;align-items:start;
}
.side-toc{
  position:sticky;top:96px;
  background:var(--card);border:1px solid var(--line);
  border-radius:var(--radius-card);padding:22px 20px;
  box-shadow:var(--shadow-1);
}
.side-toc h3{font-size:14px;color:var(--muted);font-weight:600;margin-bottom:14px;}
.side-toc ul{display:grid;gap:4px;}
.side-toc a{
  display:block;font-size:14px;color:var(--muted);
  padding:9px 12px;border-radius:10px;border-left:3px solid transparent;
}
.side-toc a:hover{background:#F2F5F7;color:var(--primary-dark);text-decoration:none;}
.side-toc a.is-current{background:var(--primary-light);color:var(--primary-dark);font-weight:600;border-left-color:var(--primary);}
.side-toc .toc-note{
  margin-top:16px;padding-top:16px;border-top:1px dashed var(--line);
  font-size:13px;color:var(--muted);
}

.timeline{display:grid;gap:18px;}
.step{
  position:relative;
  background:var(--card);border:1px solid var(--line);
  border-radius:var(--radius-card);padding:24px 26px 24px 74px;
  box-shadow:var(--shadow-1);
  transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
}
.step:hover{transform:translateY(-3px);box-shadow:var(--shadow-2);border-color:rgba(44,107,176,.35);}
.step-num{
  position:absolute;left:22px;top:24px;
  width:34px;height:34px;border-radius:50%;
  background:var(--primary);color:#fff;
  display:flex;align-items:center;justify-content:center;
  font-size:15px;font-weight:700;
  font-variant-numeric:tabular-nums;
}
.step::after{
  content:"";position:absolute;left:38px;bottom:-19px;width:2px;height:19px;
  background:linear-gradient(180deg,rgba(44,107,176,.45),rgba(44,107,176,.05));
}
.step:last-child::after{display:none;}
.step h3{font-size:20px;font-weight:600;}
.step p{margin-top:10px;color:var(--muted);font-size:15px;}
.step .kv{
  display:flex;flex-wrap:wrap;gap:10px;margin-top:14px;
}
.step .kv span{
  font-size:13px;padding:5px 12px;border-radius:999px;
  background:var(--primary-light);color:var(--primary-dark);
}
.step .kv span.warn{background:#FDF0E4;color:#A85A16;}
@media (max-width:991px){
  .split{grid-template-columns:1fr;gap:28px;}
  .side-toc{position:static;}
}
@media (max-width:520px){
  .step{padding:20px 20px 20px 20px;}
  .step-num{position:static;margin-bottom:12px;}
  .step::after{display:none;}
}

/* ===== 通道卡 ===== */
.channel-grid{
  display:grid;grid-template-columns:repeat(3,minmax(0,1fr));
  gap:24px;margin-top:40px;
}
.channel-card{
  background:var(--card);border:1px solid var(--line);border-radius:var(--radius-card);
  overflow:hidden;box-shadow:var(--shadow-1);
  display:flex;flex-direction:column;
  transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
}
.channel-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-2);border-color:rgba(44,107,176,.35);}
.thumb{position:relative;aspect-ratio:16/9;overflow:hidden;background:var(--primary-light);}
.thumb img{width:100%;height:100%;object-fit:cover;}
.thumb .tag{
  position:absolute;left:12px;top:12px;
  background:rgba(255,255,255,.94);color:var(--primary-dark);
  font-size:12px;font-weight:600;padding:5px 11px;border-radius:999px;
}
.channel-body{padding:22px;display:flex;flex-direction:column;gap:10px;flex:1;}
.channel-body h3{font-size:19px;font-weight:600;}
.channel-body p{font-size:14.5px;color:var(--muted);}
.channel-body .link{margin-top:auto;font-size:14px;font-weight:600;}
@media (max-width:991px){.channel-grid{grid-template-columns:1fr 1fr;}}
@media (max-width:640px){.channel-grid{grid-template-columns:1fr;}}

/* ===== 准备清单 ===== */
.check-wrap{
  margin-top:40px;display:grid;grid-template-columns:minmax(0,1.05fr) minmax(0,.95fr);
  gap:28px;align-items:stretch;
}
.check-card{
  background:var(--card);border:1px solid var(--line);border-radius:var(--radius-card);
  padding:28px;box-shadow:var(--shadow-1);
}
.check-card h3{font-size:20px;font-weight:600;margin-bottom:8px;}
.check-card > p{color:var(--muted);font-size:14.5px;margin-bottom:18px;}
.check-list{display:grid;gap:14px;}
.check-list li{display:flex;gap:12px;font-size:15px;color:var(--muted);}
.check-list li b{color:var(--ink);font-weight:600;display:block;font-size:15px;}
.check-icon{
  flex:0 0 auto;width:24px;height:24px;border-radius:8px;
  background:var(--green-light);color:var(--green);
  display:flex;align-items:center;justify-content:center;font-size:13px;font-weight:700;
}
.visual-card{
  border-radius:var(--radius-card);overflow:hidden;position:relative;
  border:1px solid var(--line);background:var(--primary-dark);min-height:280px;
  display:flex;flex-direction:column;justify-content:flex-end;
}
.visual-card img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;opacity:.55;}
.visual-inner{position:relative;padding:28px;color:#fff;background:linear-gradient(180deg,rgba(16,28,38,0),rgba(16,28,38,.86));}
.visual-inner h3{font-size:19px;font-weight:600;}
.visual-inner p{font-size:14px;color:#CFDCE6;margin-top:8px;}
@media (max-width:991px){.check-wrap{grid-template-columns:1fr;}}

/* ===== 状态条 / 数据 ===== */
.metrics{
  margin-top:40px;display:grid;grid-template-columns:repeat(4,minmax(0,1fr));
  gap:0;background:var(--primary-light);border:1px solid #DCE7F2;border-radius:var(--radius-card);
  overflow:hidden;
}
.metric{padding:26px 22px;border-right:1px solid #DCE7F2;}
.metric:last-child{border-right:none;}
.metric strong{
  display:block;font-size:30px;font-weight:700;color:var(--primary-dark);
  font-variant-numeric:tabular-nums;line-height:1.2;
}
.metric span{display:block;margin-top:8px;font-size:13.5px;color:var(--muted);}
@media (max-width:767px){
  .metrics{grid-template-columns:1fr 1fr;}
  .metric{border-right:none;border-bottom:1px solid #DCE7F2;}
  .metric:nth-child(odd){border-right:1px solid #DCE7F2;}
  .metric:nth-last-child(-n+2){border-bottom:none;}
}

/* ===== FAQ ===== */
.faq-list{margin-top:36px;display:grid;gap:14px;}
.faq-item{
  background:var(--card);border:1px solid var(--line);border-radius:var(--radius-card);
  box-shadow:var(--shadow-1);overflow:hidden;
  transition:border-color .2s ease,box-shadow .2s ease;
}
.faq-item.is-open{border-color:rgba(44,107,176,.4);box-shadow:var(--shadow-2);}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:16px;
  background:none;border:0;cursor:pointer;text-align:left;
  padding:20px 24px;font-size:16.5px;font-weight:600;color:var(--ink);
  border-left:4px solid transparent;
  transition:background-color .2s ease,border-color .2s ease;
}
.faq-q:hover{background:#F7F9FA;}
.faq-item.is-open .faq-q{color:var(--primary-dark);border-left-color:var(--primary);background:#FAFCFE;}
.faq-q .chev{
  flex:0 0 auto;width:26px;height:26px;border-radius:50%;
  background:var(--primary-light);color:var(--primary);
  display:flex;align-items:center;justify-content:center;
  transition:transform .25s ease;
}
.faq-item.is-open .chev{transform:rotate(180deg);}
.faq-a{
  max-height:0;overflow:hidden;transition:max-height .3s ease;
}
.faq-a p{
  padding:0 24px 22px 28px;color:var(--muted);font-size:15px;
}
.faq-a .tip{
  margin:0 24px 22px 28px;padding:12px 16px;border-radius:10px;
  background:var(--green-light);color:#2E7156;font-size:14px;
}

/* ===== CTA 条 ===== */
.cta-band{
  margin-top:var(--gap-section);
  background:var(--ink-deep);
  border-radius:var(--radius-lg);
  padding:44px 48px;
  display:grid;grid-template-columns:minmax(0,1.2fr) auto;
  gap:32px;align-items:center;color:#fff;
  position:relative;overflow:hidden;
}
.cta-band::before{
  content:"";position:absolute;right:-80px;top:-80px;width:280px;height:280px;
  border-radius:50%;background:rgba(63,143,107,.22);
}
.cta-band h2{font-size:clamp(21px,2.2vw,26px);font-weight:600;position:relative;}
.cta-band p{margin-top:12px;color:#B9C7D3;font-size:15px;max-width:620px;position:relative;}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px;position:relative;}
@media (max-width:860px){
  .cta-band{grid-template-columns:1fr;padding:34px 26px;}
}
@media (max-width:767px){.cta-band{margin-top:48px;}}

/* ===== footer ===== */
.site-footer{
  margin-top:var(--gap-section);
  background:var(--ink-deep);color:#AEBBC7;
  padding:64px 0 0;
}
.footer-grid{
  display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:36px;
}
.footer-brand .logo{margin-bottom:16px;}
.footer-brand .logo-text b{color:#fff;}
.footer-brand .logo-text span{color:#8FA3B3;}
.footer-brand p{font-size:14px;line-height:1.85;color:#93A4B2;max-width:340px;}
.footer-col h4{color:#fff;font-size:15px;font-weight:600;margin-bottom:16px;}
.footer-col ul{display:grid;gap:10px;font-size:14px;}
.footer-col a{color:#A7B6C3;text-decoration:none;}
.footer-col a:hover{color:#7FD3AB;text-decoration:none;}
.footer-col .domain{color:#E3ECF3;font-weight:600;letter-spacing:.02em;}
.footer-bottom{
  margin-top:48px;border-top:1px solid rgba(255,255,255,.1);
  padding:20px 0;display:flex;flex-wrap:wrap;gap:10px;justify-content:space-between;
  font-size:13px;color:#7E8F9D;
}
@media (max-width:991px){.footer-grid{grid-template-columns:1fr 1fr;}}
@media (max-width:560px){
  .footer-grid{grid-template-columns:1fr;gap:28px;}
  .site-footer{padding-top:48px;}
}

/* ===== 浮动按钮 ===== */
.float-btn{
  position:fixed;right:24px;bottom:24px;z-index:50;
  display:inline-flex;align-items:center;gap:8px;
  background:var(--primary);color:#fff;font-size:14px;font-weight:600;
  padding:13px 20px;border-radius:999px;
  box-shadow:0 14px 32px rgba(44,107,176,.34);
  transition:transform .18s ease,background-color .18s ease,box-shadow .18s ease;
}
.float-btn:hover{background:var(--primary-dark);color:#fff;text-decoration:none;transform:translateY(-2px);}
.float-btn:active{transform:translateY(0);}
.float-btn svg{width:17px;height:17px;stroke:currentColor;}
@media (max-width:600px){
  .float-btn{right:16px;bottom:16px;padding:13px;border-radius:50%;}
  .float-btn span{display:none;}
}

/* roulang page: article */
:root{
  --primary:#2C6BB0;
  --primary-dark:#1B4A7A;
  --primary-soft:#EDF3FA;
  --green:#3F8F6B;
  --green-soft:#EAF4EF;
  --orange:#D97A2B;
  --bg:#F5F7F8;
  --card:#FFFFFF;
  --text:#16212B;
  --muted:#56656F;
  --line:#E4EAEE;
  --footer:#101C26;
  --r-card:14px;
  --r-btn:10px;
  --r-lg:20px;
  --sh1:0 1px 2px rgba(22,33,43,.04),0 8px 24px rgba(22,33,43,.06);
  --sh2:0 16px 40px rgba(44,107,176,.12);
  --sh3:0 24px 64px rgba(22,33,43,.18);
  --w:1200px;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  background:var(--bg);
  color:var(--text);
  font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei","Source Han Sans SC","Helvetica Neue",Arial,sans-serif;
  font-size:16px;
  line-height:1.75;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;height:auto}
a{color:inherit;text-decoration:none}
button{font:inherit;color:inherit;border:0;background:none;cursor:pointer}
input,select,textarea{font:inherit;color:inherit}
ul,ol{margin:0;padding:0;list-style:none}
h1,h2,h3,h4,p{margin:0}
:focus-visible{outline:2px solid rgba(44,107,176,.55);outline-offset:2px;border-radius:6px}
.container{width:100%;max-width:var(--w);margin:0 auto;padding:0 32px}
.section{padding:80px 0}
.section--tight{padding:56px 0}
.section-head{max-width:720px;margin-bottom:32px}
.section-head h2{font-size:28px;font-weight:600;line-height:1.4}
.section-head p{margin-top:12px;color:var(--muted);font-size:15px}

/* ---------- header / nav ---------- */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(255,255,255,.96);
  border-bottom:1px solid transparent;
  transition:box-shadow .25s ease,border-color .25s ease;
}
.site-header.scrolled{
  border-bottom-color:var(--line);
  box-shadow:0 6px 20px rgba(22,33,43,.06);
}
.header-inner{
  display:flex;align-items:center;gap:28px;
  height:72px;
  transition:height .25s ease;
}
.site-header.scrolled .header-inner{height:60px}
.logo{display:flex;align-items:center;gap:10px;flex-shrink:0}
.logo-mark{
  width:38px;height:38px;border-radius:11px;
  background:linear-gradient(160deg,var(--primary),var(--primary-dark));
  display:flex;align-items:center;justify-content:center;
  box-shadow:0 6px 16px rgba(44,107,176,.28);
}
.logo-mark svg{width:20px;height:20px}
.logo-text{display:flex;flex-direction:column;line-height:1.15}
.logo-text b{font-size:16px;font-weight:700;letter-spacing:-.01em}
.logo-text span{font-size:11.5px;color:var(--muted);letter-spacing:.04em}
.nav-menu{display:flex;align-items:center;gap:4px;margin-left:auto}
.nav-menu a{
  display:inline-flex;align-items:center;
  padding:8px 14px;border-radius:999px;
  font-size:14.5px;color:var(--muted);
  transition:background .2s ease,color .2s ease,box-shadow .2s ease;
  white-space:nowrap;
}
.nav-menu a:hover{background:#F1F4F6;color:var(--text)}
.nav-menu a.active{
  background:var(--primary-soft);
  color:var(--primary);
  font-weight:600;
  box-shadow:inset 0 -2px 0 var(--primary);
}
.header-actions{display:flex;align-items:center;gap:12px;flex-shrink:0}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:46px;padding:0 22px;border-radius:var(--r-btn);
  font-size:15px;font-weight:600;white-space:nowrap;
  transition:transform .18s ease,box-shadow .22s ease,background .2s ease,color .2s ease,border-color .2s ease;
}
.btn-primary{background:var(--primary);color:#fff;box-shadow:0 8px 20px rgba(44,107,176,.22)}
.btn-primary:hover{background:var(--primary-dark);transform:translateY(-1px);box-shadow:var(--sh2)}
.btn-primary:active{transform:translateY(0);box-shadow:0 4px 12px rgba(44,107,176,.2)}
.btn-ghost{background:#fff;color:var(--primary);border:1.5px solid var(--primary)}
.btn-ghost:hover{background:var(--primary-soft);transform:translateY(-1px)}
.btn-ghost:active{transform:translateY(0)}
.btn-sm{height:40px;padding:0 18px;font-size:14px}
.btn-block{width:100%}
.btn[disabled],.btn.is-disabled{opacity:.5;cursor:not-allowed;transform:none;box-shadow:none}
.nav-toggle{
  display:none;width:44px;height:44px;border-radius:10px;
  align-items:center;justify-content:center;border:1px solid var(--line);background:#fff;
}
.nav-toggle span{display:block;width:18px;height:2px;background:var(--text);border-radius:2px;position:relative}
.nav-toggle span::before,.nav-toggle span::after{
  content:"";position:absolute;left:0;width:18px;height:2px;background:var(--text);border-radius:2px;
}
.nav-toggle span::before{top:-6px}
.nav-toggle span::after{top:6px}
.drawer-cta{display:none}

/* ---------- article banner ---------- */
.page-banner{
  position:relative;
  background-color:#12212E;
  background-image:linear-gradient(105deg,rgba(16,28,38,.94) 0%,rgba(22,45,66,.86) 46%,rgba(44,107,176,.72) 100%),url('/assets/images/backpic/back-1.webp');
  background-size:cover;
  background-position:center;
  color:#fff;
  padding:46px 0 54px;
}
.crumbs{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:rgba(255,255,255,.72)}
.crumbs a:hover{color:#fff;text-decoration:underline;text-underline-offset:4px}
.crumbs .sep{opacity:.5}
.crumbs .current{color:#fff}
.article-title-block{margin-top:22px;max-width:860px}
.badge{
  display:inline-flex;align-items:center;gap:6px;
  padding:4px 12px;border-radius:999px;
  font-size:12.5px;font-weight:600;letter-spacing:.02em;
}
.badge-green{background:var(--green-soft);color:var(--green)}
.badge-blue{background:var(--primary-soft);color:var(--primary)}
.badge-glass{background:rgba(255,255,255,.16);color:#fff;border:1px solid rgba(255,255,255,.24)}
h1.article-h1{
  font-size:40px;line-height:1.28;font-weight:700;letter-spacing:-.01em;
  margin-top:16px;
}
.article-meta{display:flex;flex-wrap:wrap;align-items:center;gap:10px 20px;margin-top:20px;font-size:13.5px;color:rgba(255,255,255,.78)}
.article-meta .meta-item{display:inline-flex;align-items:center;gap:7px}
.article-meta svg{width:15px;height:15px;opacity:.85}

/* ---------- layout ---------- */
.article-layout{
  display:grid;
  grid-template-columns:minmax(0,1fr) 300px;
  gap:44px;
  align-items:start;
  padding:52px 0 72px;
}
.article-main{min-width:0}
.reading-card{
  background:var(--card);
  border:1px solid var(--line);
  border-radius:var(--r-lg);
  box-shadow:var(--sh1);
  padding:40px 44px 44px;
}

/* ---------- article body ---------- */
.article-body{max-width:760px;font-size:17px;line-height:1.9;color:#22303B}
.article-body > *:first-child{margin-top:0}
.article-body p{margin:0 0 1.05em}
.article-body h2{
  position:relative;
  font-size:24px;font-weight:600;line-height:1.5;color:var(--text);
  margin:1.9em 0 .75em;padding-left:14px;scroll-margin-top:96px;
}
.article-body h2::before{
  content:"";position:absolute;left:0;top:.32em;width:4px;height:1.05em;
  background:var(--primary);border-radius:2px;
}
.article-body h3{font-size:19px;font-weight:600;line-height:1.6;margin:1.5em 0 .6em;color:var(--text);scroll-margin-top:96px}
.article-body h4{font-size:16.5px;font-weight:600;margin:1.3em 0 .5em;color:var(--primary-dark)}
.article-body img{border-radius:12px;margin:1.3em auto;box-shadow:var(--sh1)}
.article-body figure{margin:1.4em 0}
.article-body figcaption{text-align:center;font-size:13px;color:var(--muted);margin-top:8px}
.article-body blockquote{
  margin:1.3em 0;padding:16px 20px;
  background:#F2F6F9;border-left:4px solid var(--primary);
  border-radius:0 12px 12px 0;color:var(--muted);font-size:16px;
}
.article-body blockquote p:last-child{margin-bottom:0}
.article-body ul,.article-body ol{margin:0 0 1.15em;padding-left:1.35em}
.article-body ul li{list-style:disc;margin:.35em 0}
.article-body ol li{list-style:decimal;margin:.35em 0}
.article-body a{color:var(--primary);text-decoration:underline;text-underline-offset:4px;text-decoration-thickness:1px}
.article-body a:hover{text-decoration-thickness:2px}
.article-body strong{font-weight:600;color:var(--text)}
.article-body hr{border:0;border-top:1px solid var(--line);margin:2em 0}
.article-body table{
  width:100%;border-collapse:collapse;margin:1.3em 0;font-size:15px;
  border:1px solid var(--line);border-radius:12px;overflow:hidden;
}
.article-body th,.article-body td{border:1px solid var(--line);padding:10px 14px;text-align:left}
.article-body th{background:var(--primary-soft);font-weight:600}
.article-body code{
  background:#F1F4F6;border:1px solid var(--line);border-radius:6px;
  padding:1px 6px;font-size:14.5px;
}
.article-body pre{
  background:#101C26;color:#E6EEF5;border-radius:12px;
  padding:18px 20px;overflow-x:auto;font-size:14px;line-height:1.7;margin:1.3em 0;
}
.article-body pre code{background:none;border:0;color:inherit;padding:0}

/* ---------- side column ---------- */
.article-side{display:flex;flex-direction:column;gap:18px;position:sticky;top:88px}
.side-card{
  background:var(--card);border:1px solid var(--line);
  border-radius:var(--r-card);box-shadow:var(--sh1);padding:20px 22px;
}
.side-title{font-size:14px;font-weight:600;color:var(--text);letter-spacing:.02em;margin-bottom:12px;display:flex;align-items:center;gap:8px}
.side-title::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--green)}
.toc a{
  display:block;font-size:13.5px;color:var(--muted);
  padding:6px 0 6px 12px;border-left:2px solid var(--line);
  transition:color .2s ease,border-color .2s ease;
}
.toc a:hover,.toc a.active{color:var(--primary);border-left-color:var(--primary)}
.toc a.lv3{padding-left:24px;font-size:13px}
.side-links a{
  display:flex;align-items:center;justify-content:space-between;gap:10px;
  font-size:14px;color:var(--muted);padding:9px 0;border-bottom:1px dashed var(--line);
  transition:color .2s ease;
}
.side-links li:last-child a{border-bottom:0}
.side-links a:hover{color:var(--primary)}
.side-links a span{color:var(--primary);font-size:13px}
.side-card--cta{background:linear-gradient(170deg,#F4F9F6,#EAF4EF);border-color:#D5E8DE}
.side-card--cta h3{font-size:16px;font-weight:600;margin-bottom:8px}
.side-card--cta p{font-size:13.5px;color:var(--muted);margin-bottom:14px}

/* ---------- empty state ---------- */
.article-empty{
  text-align:center;padding:56px 24px;
  display:flex;flex-direction:column;align-items:center;gap:14px;
}
.article-empty .icon{
  width:48px;height:48px;border-radius:14px;background:var(--primary-soft);
  display:flex;align-items:center;justify-content:center;
}
.article-empty .icon svg{width:24px;height:24px;stroke:var(--primary)}
.article-empty h2{font-size:20px;font-weight:600}
.article-empty p{font-size:14.5px;color:var(--muted);max-width:420px}

/* ---------- footer of article ---------- */
.article-foot{
  margin-top:34px;padding-top:26px;border-top:1px solid var(--line);
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:16px;
}
.article-foot .tags{display:flex;flex-wrap:wrap;gap:8px}
.tag{
  display:inline-flex;align-items:center;
  padding:5px 12px;border-radius:999px;
  background:#F1F4F6;color:var(--muted);font-size:12.5px;
  border:1px solid var(--line);transition:background .2s ease,color .2s ease;
}
.tag:hover{background:var(--primary-soft);color:var(--primary)}
.text-link{
  color:var(--primary);font-size:14.5px;font-weight:600;
  text-decoration:underline;text-underline-offset:4px;text-decoration-thickness:1px;
}
.text-link:hover{text-decoration-thickness:2px}

/* ---------- cards ---------- */
.grid-3{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px}
.card{
  background:var(--card);border:1px solid var(--line);border-radius:var(--r-card);
  box-shadow:var(--sh1);overflow:hidden;
  transition:transform .22s ease,box-shadow .22s ease,border-color .22s ease;
  display:flex;flex-direction:column;
}
.card:hover{transform:translateY(-3px);box-shadow:var(--sh2);border-color:rgba(44,107,176,.35)}
.card-cover{position:relative;aspect-ratio:16/9;overflow:hidden;background:#E9EEF1}
.card-cover img{width:100%;height:100%;object-fit:cover;transition:transform .4s ease}
.card:hover .card-cover img{transform:scale(1.04)}
.card-body{padding:22px 24px 24px;display:flex;flex-direction:column;gap:10px;flex:1}
.card-body h3{font-size:17.5px;font-weight:600;line-height:1.5}
.card-body p{font-size:14px;color:var(--muted);line-height:1.7}
.card-meta{display:flex;align-items:center;gap:10px;font-size:12.5px;color:var(--muted)}
.card-body .text-link{margin-top:auto}

/* ---------- CTA band ---------- */
.cta-band{
  background:linear-gradient(120deg,#12212E 0%,#1B4A7A 62%,#2C6BB0 100%);
  color:#fff;border-radius:var(--r-lg);
  padding:40px 44px;
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:24px;
  box-shadow:var(--sh2);
}
.cta-band h2{font-size:24px;font-weight:600}
.cta-band p{margin-top:10px;font-size:14.5px;color:rgba(255,255,255,.78);max-width:560px}
.cta-band .btn-primary{background:#fff;color:var(--primary-dark)}
.cta-band .btn-primary:hover{background:#EAF4EF;color:var(--primary-dark)}
.cta-band .btn-ghost{background:transparent;color:#fff;border-color:rgba(255,255,255,.55)}
.cta-band .btn-ghost:hover{background:rgba(255,255,255,.12);color:#fff}
.cta-actions{display:flex;flex-wrap:wrap;gap:12px}

/* ---------- footer ---------- */
.site-footer{background:var(--footer);color:#C8D4DD;margin-top:24px}
.footer-grid{
  display:grid;grid-template-columns:1.4fr 1fr 1fr 1.1fr;gap:40px;
  padding:64px 0 40px;
}
.footer-brand .logo{margin-bottom:16px}
.footer-brand .logo-text b{color:#fff}
.footer-brand .logo-text span{color:#93A5B1}
.footer-brand p{font-size:13.5px;line-height:1.8;color:#93A5B1;max-width:320px}
.footer-col h4{font-size:14px;color:#fff;font-weight:600;margin-bottom:16px}
.footer-col ul li{font-size:13.5px;color:#93A5B1;margin-bottom:10px}
.footer-col ul li a{transition:color .2s ease}
.footer-col ul li a:hover{color:#8FD3B4}
.footer-col .domain{color:#8FD3B4;font-weight:600;letter-spacing:.02em}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.1);
  padding:20px 0 28px;
  display:flex;flex-wrap:wrap;justify-content:space-between;gap:10px;
  font-size:12.5px;color:#7D8F9B;
}

/* ---------- floating & modal ---------- */
.float-btn{
  position:fixed;right:24px;bottom:24px;z-index:70;
  display:inline-flex;align-items:center;gap:8px;
  height:50px;padding:0 22px;border-radius:999px;
  background:var(--primary);color:#fff;font-size:14.5px;font-weight:600;
  box-shadow:0 12px 30px rgba(44,107,176,.34);
  transition:transform .18s ease,background .2s ease,box-shadow .22s ease;
}
.float-btn:hover{background:var(--primary-dark);transform:translateY(-2px);box-shadow:var(--sh2)}
.float-btn svg{width:18px;height:18px}
.modal{
  position:fixed;inset:0;z-index:90;display:none;
  align-items:center;justify-content:center;padding:24px;
}
.modal.open{display:flex}
.modal-mask{position:absolute;inset:0;background:rgba(22,33,43,.45)}
.modal-card{
  position:relative;width:100%;max-width:640px;
  background:#fff;border-radius:16px;box-shadow:var(--sh3);
  padding:28px 30px 30px;max-height:90vh;overflow-y:auto;
  animation:pop .22s ease;
}
@keyframes pop{from{opacity:0;transform:translateY(12px)}to{opacity:1;transform:translateY(0)}}
.modal-head{display:flex;align-items:flex-start;justify-content:space-between;gap:16px;margin-bottom:6px}
.modal-head h3{font-size:19px;font-weight:600}
.modal-head p{font-size:13.5px;color:var(--muted);margin-top:6px}
.modal-close{
  width:44px;height:44px;flex-shrink:0;border-radius:12px;
  display:flex;align-items:center;justify-content:center;background:#F1F4F6;
  transition:background .2s ease;
}
.modal-close:hover{background:var(--primary-soft)}
.modal-close svg{width:18px;height:18px}
.form-grid{display:grid;gap:16px;margin-top:20px}
.field label{display:block;font-size:13.5px;font-weight:600;margin-bottom:8px}
.field input,.field select,.field textarea{
  width:100%;border:1px solid var(--line);border-radius:10px;
  background:#FBFCFD;padding:0 14px;font-size:14.5px;
  transition:border-color .2s ease,box-shadow .2s ease,background .2s ease;
}
.field input,.field select{height:48px}
.field textarea{min-height:104px;padding:12px 14px;resize:vertical;line-height:1.7}
.field input:focus,.field select:focus,.field textarea:focus{
  outline:none;border-color:var(--primary);background:#fff;
  box-shadow:0 0 0 3px rgba(44,107,176,.14);
}
.field .hint{font-size:12.5px;color:var(--muted);margin-top:6px}
.consent{display:flex;align-items:flex-start;gap:10px;font-size:13px;color:var(--muted);line-height:1.7}
.consent input{width:18px;height:18px;margin-top:3px;accent-color:var(--primary);flex-shrink:0}
.privacy-note{font-size:13px;color:var(--muted);margin-top:14px}
.privacy-note a{color:var(--primary);text-decoration:underline;text-underline-offset:4px}

/* ---------- responsive ---------- */
@media (max-width:1279px){
  .container{padding:0 32px}
  .article-layout{grid-template-columns:minmax(0,1fr);gap:28px;padding:44px 0 64px}
  .article-side{position:static;flex-direction:row;flex-wrap:wrap}
  .article-side .side-card{flex:1 1 280px}
}
@media (max-width:991px){
  .container{padding:0 24px}
  .section{padding:64px 0}
  .header-inner{height:64px;gap:16px}
  .nav-toggle{display:inline-flex}
  .header-actions .btn{display:none}
  .nav-menu{
    position:fixed;top:64px;left:0;right:0;bottom:0;z-index:80;
    flex-direction:column;align-items:stretch;gap:6px;
    background:#fff;padding:20px 24px 100px;margin:0;
    transform:translateY(-12px);opacity:0;pointer-events:none;
    transition:opacity .2s ease,transform .2s ease;
    overflow-y:auto;
  }
  .nav-menu.open{transform:translateY(0);opacity:1;pointer-events:auto}
  .nav-menu a{padding:14px 16px;border-radius:12px;font-size:15.5px}
  .nav-menu a.active{box-shadow:inset 3px 0 0 var(--primary)}
  .drawer-cta{
    display:flex;position:fixed;left:24px;right:24px;bottom:24px;z-index:85;
    align-items:center;justify-content:center;
  }
  h1.article-h1{font-size:32px}
  .reading-card{padding:30px 28px 34px}
  .grid-3{grid-template-columns:repeat(2,minmax(0,1fr))}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;padding:48px 0 32px}
  .cta-band{padding:32px 28px}
}
@media (max-width:767px){
  .container{padding:0 16px}
  .section{padding:48px 0}
  .page-banner{padding:32px 0 40px}
  h1.article-h1{font-size:26px;line-height:1.35}
  .article-meta{gap:8px 16px;font-size:13px}
  .article-layout{padding:32px 0 52px}
  .reading-card{padding:24px 20px 28px;border-radius:16px}
  .article-body{font-size:16.5px;line-height:1.85}
  .article-body h2{font-size:21px}
  .article-body h3{font-size:18px}
  .article-side{flex-direction:column}
  .grid-3{grid-template-columns:1fr}
  .article-foot{flex-direction:column;align-items:flex-start}
  .cta-band{padding:26px 20px;border-radius:16px}
  .cta-band h2{font-size:20px}
  .cta-actions{width:100%}
  .cta-actions .btn{flex:1 1 auto}
  .float-btn{right:16px;bottom:16px;height:48px;padding:0 16px}
  .float-btn span{display:none}
  .modal{padding:0;align-items:flex-end}
  .modal-card{
    max-width:none;border-radius:18px 18px 0 0;
    max-height:92vh;padding:22px 20px 28px;
    animation:slideUp .25s ease;
  }
  @keyframes slideUp{from{transform:translateY(24px);opacity:.6}to{transform:translateY(0);opacity:1}}
  .footer-grid{grid-template-columns:1fr;gap:28px}
  .footer-bottom{flex-direction:column}
}

/* roulang page: category2 */
:root{
  --blue:#2C6BB0;
  --blue-dark:#1B4A7A;
  --blue-soft:#EDF3FA;
  --green:#3F8F6B;
  --green-soft:#EAF4EF;
  --orange:#D97A2B;
  --bg:#F5F7F8;
  --card:#FFFFFF;
  --text:#16212B;
  --muted:#56656F;
  --line:#E4EAEE;
  --r-card:14px;
  --r-btn:10px;
  --r-lg:20px;
  --sh-1:0 1px 2px rgba(22,33,43,.04),0 8px 24px rgba(22,33,43,.06);
  --sh-2:0 16px 40px rgba(44,107,176,.12);
  --sh-3:0 24px 64px rgba(22,33,43,.18);
  --nav-h:72px;
  --font:-apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei","Source Han Sans SC","Hiragino Sans GB",sans-serif;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:var(--font);
  font-size:16px;
  line-height:1.75;
  color:var(--text);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border-style:none}
a{color:var(--blue);text-decoration:none;transition:color .2s ease}
a:hover{color:var(--blue-dark)}
button{font-family:inherit;cursor:pointer}
h1,h2,h3,h4,p,ul,ol,dl,dd{margin:0}
ul,ol{padding:0;list-style:none}
:focus-visible{outline:2px solid rgba(44,107,176,.55);outline-offset:2px;border-radius:4px}

.container{width:100%;max-width:1200px;margin:0 auto;padding:0 16px}
@media(min-width:768px){.container{padding:0 24px}}
@media(min-width:992px){.container{padding:0 32px}}
@media(min-width:1280px){.container{padding:0}}

/* ============ 头部导航 ============ */
.site-header{
  position:sticky;
  top:0;
  z-index:80;
  background:rgba(255,255,255,.94);
  border-bottom:1px solid var(--line);
  transition:box-shadow .25s ease;
}
.site-header.scrolled{box-shadow:0 4px 18px rgba(22,33,43,.06)}
.header-inner{
  display:flex;
  align-items:center;
  gap:20px;
  height:var(--nav-h);
  transition:height .25s ease;
}
.site-header.scrolled .header-inner{height:60px}
.logo{
  display:flex;
  align-items:center;
  gap:10px;
  color:var(--text);
  flex-shrink:0;
}
.logo:hover{color:var(--text)}
.logo-mark{
  width:38px;height:38px;
  border-radius:11px;
  background:linear-gradient(150deg,var(--blue) 0%,var(--blue-dark) 100%);
  display:flex;align-items:center;justify-content:center;
  box-shadow:0 6px 14px rgba(44,107,176,.28);
  flex-shrink:0;
}
.logo-mark svg{width:21px;height:21px}
.logo-text{display:flex;flex-direction:column;line-height:1.15}
.logo-text b{font-size:17px;font-weight:700;letter-spacing:-.01em}
.logo-text span{font-size:11.5px;color:var(--muted);font-weight:500;letter-spacing:.02em}

.nav-menu{
  display:flex;
  align-items:center;
  gap:4px;
  margin-left:auto;
}
.nav-menu a{
  display:block;
  padding:9px 14px;
  border-radius:999px;
  font-size:15px;
  color:#33424E;
  font-weight:500;
  white-space:nowrap;
  border-bottom:2px solid transparent;
  transition:background .2s ease,color .2s ease;
}
.nav-menu a:hover{background:#F2F5F7;color:var(--text)}
.nav-menu a.active{
  background:var(--blue-soft);
  color:var(--blue-dark);
  font-weight:600;
  box-shadow:inset 0 -2px 0 var(--blue);
}
.header-actions{display:flex;align-items:center;gap:12px;flex-shrink:0}

.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  padding:12px 22px;
  border-radius:var(--r-btn);
  font-size:15px;
  font-weight:600;
  border:1.5px solid transparent;
  transition:transform .18s ease,box-shadow .18s ease,background .18s ease,color .18s ease,border-color .18s ease;
  cursor:pointer;
  text-align:center;
  line-height:1.4;
}
.btn-primary{background:var(--blue);color:#fff;box-shadow:0 6px 16px rgba(44,107,176,.24)}
.btn-primary:hover{background:var(--blue-dark);color:#fff;transform:translateY(-1px);box-shadow:0 14px 30px rgba(44,107,176,.28)}
.btn-primary:active{transform:translateY(0);box-shadow:0 4px 12px rgba(44,107,176,.22)}
.btn-ghost{background:#fff;color:var(--blue-dark);border-color:var(--blue)}
.btn-ghost:hover{background:var(--blue-soft);color:var(--blue-dark);transform:translateY(-1px)}
.btn-ghost:active{transform:translateY(0)}
.btn-sm{padding:9px 18px;font-size:14px}
.btn-warm{background:var(--orange);color:#fff;box-shadow:0 6px 16px rgba(217,122,43,.24)}
.btn-warm:hover{background:#C36A22;color:#fff;transform:translateY(-1px);box-shadow:0 14px 30px rgba(217,122,43,.28)}

.nav-toggle{
  display:none;
  width:44px;height:44px;
  border:1px solid var(--line);
  background:#fff;
  border-radius:10px;
  padding:0;
  flex-direction:column;
  align-items:center;
  justify-content:center;
  gap:5px;
}
.nav-toggle span{display:block;width:19px;height:2px;background:var(--text);border-radius:2px;transition:transform .22s ease,opacity .22s ease}
body.nav-open .nav-toggle span:nth-child(1){transform:translateY(7px) rotate(45deg)}
body.nav-open .nav-toggle span:nth-child(2){opacity:0}
body.nav-open .nav-toggle span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}
.drawer-cta{display:none}

@media(max-width:991px){
  .nav-menu{
    position:fixed;
    top:var(--nav-h);
    left:0;right:0;bottom:0;
    background:#fff;
    flex-direction:column;
    align-items:stretch;
    gap:2px;
    padding:16px 20px 110px;
    margin:0;
    overflow-y:auto;
    transform:translateY(-12px);
    opacity:0;
    visibility:hidden;
    transition:opacity .22s ease,transform .22s ease,visibility .22s ease;
    box-shadow:0 20px 40px rgba(22,33,43,.08);
  }
  .site-header.scrolled .nav-menu{top:60px}
  .nav-menu a{padding:14px 16px;border-radius:12px;font-size:16px;border-bottom:none}
  .nav-menu a.active{box-shadow:none;border-left:3px solid var(--blue);border-radius:10px}
  body.nav-open .nav-menu{transform:translateY(0);opacity:1;visibility:visible}
  .nav-toggle{display:flex}
  .nav-cta{display:none}
  .drawer-cta{
    display:none;
    position:fixed;
    left:20px;right:20px;bottom:20px;
    z-index:90;
    padding:15px;
    border-radius:var(--r-btn);
    background:var(--blue);
    color:#fff;
    text-align:center;
    font-weight:600;
    box-shadow:var(--sh-2);
  }
  body.nav-open .drawer-cta{display:block}
}
@media(max-width:520px){
  .logo-mark{width:34px;height:34px}
  .logo-text b{font-size:15.5px}
  .logo-text span{font-size:10.5px}
}

/* ============ 面包屑 ============ */
.crumb-bar{background:#fff;border-bottom:1px solid var(--line)}
.crumb{
  display:flex;align-items:center;gap:8px;
  padding:14px 0;
  font-size:13px;
  color:var(--muted);
  flex-wrap:wrap;
}
.crumb a{color:var(--muted)}
.crumb a:hover{color:var(--blue)}
.crumb .sep{color:#AEBAC4}
.crumb .cur{color:var(--text);font-weight:600}

/* ============ Hero ============ */
.page-hero{
  position:relative;
  padding:64px 0 72px;
  background-image:url('/assets/images/backpic/back-2.webp');
  background-size:cover;
  background-position:center;
  overflow:hidden;
}
.page-hero::before{
  content:"";
  position:absolute;inset:0;
  background:linear-gradient(100deg,rgba(255,255,255,.97) 0%,rgba(255,255,255,.92) 46%,rgba(237,243,250,.78) 100%);
}
.page-hero .container{position:relative;z-index:1}
.hero-grid{
  display:grid;
  grid-template-columns:1.15fr .85fr;
  gap:52px;
  align-items:center;
}
@media(max-width:991px){
  .hero-grid{grid-template-columns:1fr;gap:32px}
  .page-hero{padding:44px 0 52px}
}
.hero-eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  padding:6px 14px;
  border-radius:999px;
  background:var(--green-soft);
  color:#2E7256;
  font-size:13px;
  font-weight:600;
  margin-bottom:18px;
}
.hero-eyebrow i{width:7px;height:7px;border-radius:50%;background:var(--green);display:inline-block}
.page-hero h1{
  font-size:40px;
  line-height:1.24;
  font-weight:700;
  letter-spacing:-.01em;
  color:var(--text);
}
.page-hero h1 em{font-style:normal;color:var(--blue)}
.hero-sub{
  margin-top:18px;
  font-size:17px;
  color:var(--muted);
  max-width:620px;
}
.hero-tags{display:flex;flex-wrap:wrap;gap:10px;margin-top:22px}
.tag{
  display:inline-flex;align-items:center;
  padding:6px 14px;
  border-radius:999px;
  background:#fff;
  border:1px solid var(--line);
  font-size:13px;
  color:#3C4C58;
  font-weight:500;
}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:30px}
.hero-visual{
  background:#fff;
  border:1px solid var(--line);
  border-radius:var(--r-lg);
  padding:20px;
  box-shadow:var(--sh-1);
}
.hero-visual .shot{
  border-radius:var(--r-card);
  overflow:hidden;
  border:1px solid var(--line);
  aspect-ratio:4/3;
  background:var(--blue-soft);
}
.hero-visual .shot img{width:100%;height:100%;object-fit:cover}
.mini-rows{display:grid;gap:10px;margin-top:16px}
.mini-row{
  display:flex;align-items:center;gap:12px;
  padding:11px 14px;
  border:1px solid var(--line);
  border-radius:12px;
  background:#FCFDFE;
}
.mini-row .dot{
  width:30px;height:30px;border-radius:9px;
  background:var(--blue-soft);
  display:flex;align-items:center;justify-content:center;
  color:var(--blue);font-size:13px;font-weight:700;flex-shrink:0;
}
.mini-row b{display:block;font-size:14px;font-weight:600}
.mini-row small{color:var(--muted);font-size:12.5px}
.mini-row .val{margin-left:auto;font-size:14px;font-weight:700;color:var(--green);font-variant-numeric:tabular-nums;white-space:nowrap}
@media(max-width:520px){
  .page-hero h1{font-size:28px}
  .hero-sub{font-size:15.5px}
  .hero-actions .btn{width:100%}
}

/* ============ 通用板块 ============ */
.section{padding:80px 0}
@media(max-width:991px){.section{padding:64px 0}}
@media(max-width:767px){.section{padding:48px 0}}
.section-head{max-width:760px;margin-bottom:44px}
@media(max-width:767px){.section-head{margin-bottom:30px}}
.section-head h2{
  font-size:28px;
  font-weight:600;
  letter-spacing:-.01em;
  line-height:1.35;
}
.section-head p{margin-top:14px;color:var(--muted);font-size:16px}
.eyebrow-line{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;font-weight:700;color:var(--blue);
  letter-spacing:.08em;text-transform:uppercase;
  margin-bottom:12px;
}
.eyebrow-line::before{content:"";width:22px;height:2px;background:var(--blue);border-radius:2px}

/* ============ 安全要点：双列卡片 + 右侧常驻卡 ============ */
.split-layout{
  display:grid;
  grid-template-columns:minmax(0,1fr) 340px;
  gap:32px;
  align-items:start;
}
@media(max-width:1150px){.split-layout{grid-template-columns:1fr}}
.card-grid-2{
  display:grid;
  grid-template-columns:repeat(2,minmax(0,1fr));
  gap:22px;
}
@media(max-width:640px){.card-grid-2{grid-template-columns:1fr}}

.sec-card{
  background:var(--card);
  border:1px solid var(--line);
  border-radius:var(--r-card);
  padding:26px;
  box-shadow:var(--sh-1);
  transition:transform .22s ease,box-shadow .22s ease,border-color .22s ease;
  position:relative;
}
.sec-card:hover{transform:translateY(-3px);box-shadow:var(--sh-2);border-color:rgba(44,107,176,.35)}
.sec-card .num{
  display:inline-flex;align-items:center;justify-content:center;
  width:32px;height:32px;border-radius:10px;
  background:var(--blue-soft);color:var(--blue-dark);
  font-size:14px;font-weight:700;margin-bottom:16px;
}
.sec-card h3{font-size:19px;font-weight:600;margin-bottom:10px}
.sec-card p{color:var(--muted);font-size:15px}
.sec-card .tip{
  margin-top:16px;padding-top:14px;border-top:1px dashed var(--line);
  font-size:13.5px;color:var(--green);font-weight:600;
  display:flex;align-items:center;gap:8px;
}
.sec-card .tip svg{width:15px;height:15px;flex-shrink:0}

/* 常驻联系卡 */
.sticky-card{position:sticky;top:96px;display:grid;gap:20px}
@media(max-width:1150px){.sticky-card{position:static}}
.contact-card{
  background:#fff;
  border:1px solid var(--line);
  border-radius:var(--r-card);
  padding:26px;
  box-shadow:var(--sh-1);
}
.contact-card h3{font-size:18px;font-weight:600;margin-bottom:8px}
.contact-card>p{font-size:14px;color:var(--muted);margin-bottom:18px}
.contact-list{display:grid;gap:12px}
.contact-list li{
  display:flex;align-items:flex-start;gap:10px;
  font-size:14px;color:#33424E;
  padding:12px 14px;
  background:#FBFCFD;
  border:1px solid var(--line);
  border-radius:11px;
}
.contact-list li .ico{
  width:26px;height:26px;border-radius:8px;flex-shrink:0;
  background:var(--green-soft);color:var(--green);
  display:flex;align-items:center;justify-content:center;
  font-size:12px;font-weight:700;
}
.contact-list li b{display:block;font-weight:600;font-size:14px}
.contact-list li small{color:var(--muted);font-size:12.5px}
.contact-card .btn{width:100%;margin-top:18px}
.side-note{
  background:var(--blue-soft);
  border-radius:var(--r-card);
  padding:22px 24px;
  border:1px solid rgba(44,107,176,.14);
}
.side-note h4{font-size:15px;font-weight:700;color:var(--blue-dark);margin-bottom:8px}
.side-note p{font-size:13.5px;color:#3D5771;line-height:1.8}

/* ============ 校验项：定义列表卡片 ============ */
.dl-grid{
  display:grid;
  grid-template-columns:repeat(3,minmax(0,1fr));
  gap:20px;
}
@media(max-width:991px){.dl-grid{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media(max-width:640px){.dl-grid{grid-template-columns:1fr}}
.dl-item{
  background:#fff;
  border:1px solid var(--line);
  border-left:4px solid var(--blue);
  border-radius:12px;
  padding:20px 22px;
  transition:border-color .2s ease,box-shadow .2s ease,transform .2s ease;
}
.dl-item:hover{border-left-color:var(--green);box-shadow:var(--sh-1);transform:translateY(-2px)}
.dl-item dt{
  font-size:13px;font-weight:700;color:var(--muted);
  letter-spacing:.02em;margin-bottom:8px;
}
.dl-item dd{font-size:15.5px;font-weight:600;color:var(--text);line-height:1.65}
.dl-item dd span{display:block;margin-top:6px;font-size:13.5px;font-weight:400;color:var(--muted)}

/* ============ 排查流程 ============ */
.flow-band{
  background:#fff;
  border-top:1px solid var(--line);
  border-bottom:1px solid var(--line);
}
.flow-grid{
  display:grid;
  grid-template-columns:repeat(4,minmax(0,1fr));
  gap:20px;
  position:relative;
}
@media(max-width:991px){.flow-grid{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media(max-width:560px){.flow-grid{grid-template-columns:1fr}}
.flow-item{
  position:relative;
  padding:24px 22px;
  border:1px solid var(--line);
  border-radius:var(--r-card);
  background:#FCFDFE;
  transition:box-shadow .22s ease,transform .22s ease,border-color .22s ease;
}
.flow-item:hover{box-shadow:var(--sh-2);transform:translateY(-3px);border-color:rgba(44,107,176,.3)}
.flow-item .step{
  display:inline-flex;align-items:center;justify-content:center;
  width:34px;height:34px;border-radius:50%;
  background:var(--blue);color:#fff;font-size:14px;font-weight:700;
  margin-bottom:14px;
  box-shadow:0 6px 14px rgba(44,107,176,.25);
}
.flow-item h3{font-size:17px;font-weight:600;margin-bottom:8px}
.flow-item p{font-size:14px;color:var(--muted)}

/* ============ 图文板块 ============ */
.figure-block{
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:44px;
  align-items:center;
}
@media(max-width:900px){.figure-block{grid-template-columns:1fr;gap:28px}}
.figure-media{
  border-radius:var(--r-lg);
  overflow:hidden;
  border:1px solid var(--line);
  box-shadow:var(--sh-1);
  aspect-ratio:16/11;
  background:var(--blue-soft);
}
.figure-media img{width:100%;height:100%;object-fit:cover}
.figure-text h2{font-size:28px;font-weight:600;line-height:1.35;letter-spacing:-.01em}
.figure-text>p{margin-top:16px;color:var(--muted)}
.check-list{margin-top:24px;display:grid;gap:14px}
.check-list li{
  display:flex;gap:12px;align-items:flex-start;
  font-size:15px;color:#2C3A45;
}
.check-list li .ck{
  width:22px;height:22px;border-radius:50%;
  background:var(--green-soft);color:var(--green);
  display:flex;align-items:center;justify-content:center;
  font-size:12px;font-weight:700;flex-shrink:0;margin-top:3px;
}
@media(max-width:520px){.figure-text h2{font-size:23px}}

/* ============ FAQ ============ */
.faq-wrap{max-width:900px;margin:0 auto;display:grid;gap:14px}
.faq-item{
  background:#fff;
  border:1px solid var(--line);
  border-radius:var(--r-card);
  overflow:hidden;
  transition:box-shadow .22s ease,border-color .22s ease;
}
.faq-item:hover{border-color:rgba(44,107,176,.3)}
.faq-item.open{box-shadow:var(--sh-1);border-color:rgba(44,107,176,.4)}
.faq-q{
  width:100%;
  display:flex;align-items:center;gap:16px;
  padding:20px 24px;
  background:transparent;
  border:0;
  text-align:left;
  font-size:16.5px;
  font-weight:600;
  color:var(--text);
  position:relative;
}
.faq-q::before{
  content:"";
  position:absolute;left:0;top:12px;bottom:12px;width:4px;
  background:var(--blue);
  border-radius:0 4px 4px 0;
  opacity:0;transition:opacity .2s ease;
}
.faq-item.open .faq-q::before{opacity:1}
.faq-icon{
  margin-left:auto;flex-shrink:0;
  width:28px;height:28px;border-radius:50%;
  background:var(--blue-soft);
  display:flex;align-items:center;justify-content:center;
  transition:transform .28s ease,background .2s ease;
}
.faq-icon svg{width:13px;height:13px;stroke:var(--blue-dark)}
.faq-item.open .faq-icon{transform:rotate(180deg);background:var(--blue)}
.faq-item.open .faq-icon svg{stroke:#fff}
.faq-a{
  max-height:0;
  overflow:hidden;
  transition:max-height .32s ease;
}
.faq-a-inner{padding:0 24px 22px 24px;color:var(--muted);font-size:15px;line-height:1.85}

/* ============ CTA ============ */
.cta-band{
  background:var(--blue-dark);
  color:#fff;
  border-radius:var(--r-lg);
  padding:48px 44px;
  display:grid;
  grid-template-columns:1.4fr auto;
  gap:32px;
  align-items:center;
  position:relative;
  overflow:hidden;
}
.cta-band::after{
  content:"";
  position:absolute;right:-60px;top:-60px;
  width:240px;height:240px;border-radius:50%;
  background:rgba(63,143,107,.22);
}
.cta-band h2{font-size:26px;font-weight:600;position:relative;z-index:1;line-height:1.4}
.cta-band p{margin-top:12px;color:rgba(255,255,255,.78);font-size:15px;position:relative;z-index:1;max-width:640px}
.cta-band .cta-actions{display:flex;gap:14px;flex-wrap:wrap;position:relative;z-index:1}
.cta-band .btn-light{background:#fff;color:var(--blue-dark)}
.cta-band .btn-light:hover{background:var(--blue-soft);color:var(--blue-dark);transform:translateY(-1px)}
.cta-band .btn-line{background:transparent;color:#fff;border-color:rgba(255,255,255,.55)}
.cta-band .btn-line:hover{background:rgba(255,255,255,.12);color:#fff}
@media(max-width:900px){
  .cta-band{grid-template-columns:1fr;padding:36px 26px}
}

/* ============ 页脚 ============ */
.site-footer{background:#101C26;color:#C4CFD8;margin-top:0}
.footer-grid{
  display:grid;
  grid-template-columns:1.6fr 1fr 1fr 1.2fr;
  gap:36px;
  padding:64px 0 40px;
}
@media(max-width:991px){.footer-grid{grid-template-columns:1fr 1fr;gap:30px;padding:48px 0 32px}}
@media(max-width:560px){.footer-grid{grid-template-columns:1fr}}
.footer-brand .logo{color:#fff;margin-bottom:16px}
.footer-brand .logo-text b{color:#fff}
.footer-brand .logo-text span{color:#8FA4B4}
.footer-brand p{font-size:14px;line-height:1.85;color:#93A5B3;max-width:340px}
.footer-col h4{
  font-size:14px;font-weight:700;color:#fff;
  margin-bottom:16px;letter-spacing:.02em;
}
.footer-col ul{display:grid;gap:11px}
.footer-col li,.footer-col a{font-size:14px;color:#A3B4C1}
.footer-col a:hover{color:#7DCBA6}
.footer-col .domain{color:#E3EAF0;font-weight:600;letter-spacing:.01em}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.09);
  padding:20px 0 26px;
  display:flex;
  justify-content:space-between;
  gap:14px;
  flex-wrap:wrap;
  font-size:12.5px;
  color:#7C8D9B;
}
@media(max-width:767px){.footer-bottom{flex-direction:column}}

/* ============ 浮动按钮 ============ */
.float-cta{
  position:fixed;
  right:24px;bottom:24px;
  z-index:70;
  display:inline-flex;
  align-items:center;
  gap:9px;
  padding:14px 22px;
  border-radius:999px;
  background:var(--blue);
  color:#fff;
  font-size:14.5px;
  font-weight:600;
  box-shadow:0 12px 28px rgba(44,107,176,.32);
  transition:transform .2s ease,background .2s ease,box-shadow .2s ease;
  border:0;
}
.float-cta:hover{background:var(--blue-dark);color:#fff;transform:translateY(-2px);box-shadow:0 18px 36px rgba(44,107,176,.36)}
.float-cta svg{width:17px;height:17px}
@media(max-width:560px){
  .float-cta{right:16px;bottom:16px;padding:0;width:52px;height:52px;justify-content:center}
  .float-cta span{display:none}
}

/* 跳转锚点偏移 */
[id]{scroll-margin-top:90px}

/* roulang page: category3 */
:root{
  --brand:#2C6BB0;
  --brand-dark:#1B4A7A;
  --brand-soft:#EDF3FA;
  --green:#3F8F6B;
  --green-soft:#EAF4EF;
  --orange:#D97A2B;
  --bg:#F5F7F8;
  --card:#FFFFFF;
  --ink:#16212B;
  --muted:#56656F;
  --line:#E4EAEE;
  --r-card:14px;
  --r-btn:10px;
  --r-lg:20px;
  --sh-1:0 1px 2px rgba(22,33,43,.04),0 8px 24px rgba(22,33,43,.06);
  --sh-2:0 16px 40px rgba(44,107,176,.12);
  --sh-3:0 24px 64px rgba(22,33,43,.18);
  --gap:24px;
  --section:clamp(48px,6vw,96px);
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  background:var(--bg);
  color:var(--ink);
  font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei","Source Han Sans SC","Helvetica Neue",Arial,sans-serif;
  font-size:16px;
  line-height:1.75;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block}
a{color:var(--brand);text-decoration:none}
a:hover{color:var(--brand-dark)}
button{font-family:inherit}
h1,h2,h3,h4,p,ul,ol,figure{margin:0}
ul,ol{padding:0;list-style:none}
:focus-visible{outline:2px solid rgba(44,107,176,.55);outline-offset:2px;border-radius:6px}

.container{width:100%;max-width:1200px;margin:0 auto;padding:0 32px}
@media(max-width:991px){.container{padding:0 24px}}
@media(max-width:767px){.container{padding:0 16px}}

/* 头部导航 */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(255,255,255,.94);
  border-bottom:1px solid var(--line);
  transition:height .25s ease,box-shadow .25s ease;
}
.header-inner{display:flex;align-items:center;gap:28px;height:72px;transition:height .25s ease}
.site-header.scrolled .header-inner{height:60px}
.site-header.scrolled{box-shadow:0 6px 20px rgba(22,33,43,.06)}
.logo{display:flex;align-items:center;gap:10px;color:var(--ink);flex:none}
.logo:hover{color:var(--ink)}
.logo-mark{
  width:38px;height:38px;border-radius:11px;flex:none;
  background:linear-gradient(155deg,var(--brand) 0%,#3F8F6B 100%);
  display:flex;align-items:center;justify-content:center;
}
.logo-mark svg{width:22px;height:22px}
.logo-text{display:flex;flex-direction:column;line-height:1.15}
.logo-text b{font-size:17px;font-weight:700;letter-spacing:-.01em}
.logo-text span{font-size:12px;color:var(--muted)}
.nav-menu{display:flex;align-items:center;gap:4px;margin-left:auto}
.nav-menu a{
  position:relative;display:inline-flex;align-items:center;
  padding:8px 13px;border-radius:999px;
  font-size:15px;color:#33414C;transition:background .18s ease,color .18s ease;
}
.nav-menu a:hover{background:#F1F4F7;color:var(--ink)}
.nav-menu a.active{background:var(--brand-soft);color:var(--brand-dark);font-weight:600}
.nav-menu a.active::after{
  content:"";position:absolute;left:13px;right:13px;bottom:1px;height:2px;
  border-radius:2px;background:var(--brand);
}
.nav-cta{
  display:inline-flex;align-items:center;gap:6px;flex:none;
  height:40px;padding:0 18px;border-radius:var(--r-btn);
  background:var(--brand);color:#fff;font-size:14.5px;font-weight:600;
  box-shadow:0 1px 2px rgba(22,33,43,.06);
  transition:background .2s ease,transform .2s ease,box-shadow .2s ease;
}
.nav-cta:hover{background:var(--brand-dark);color:#fff;transform:translateY(-1px);box-shadow:var(--sh-2)}
.nav-cta:active{transform:translateY(0)}
.nav-toggle{
  display:none;width:44px;height:44px;margin-left:auto;border:1px solid var(--line);
  background:#fff;border-radius:12px;align-items:center;justify-content:center;cursor:pointer;
}
.nav-toggle span{display:block;width:18px;height:2px;background:var(--ink);border-radius:2px;position:relative}
.nav-toggle span::before,.nav-toggle span::after{
  content:"";position:absolute;left:0;width:18px;height:2px;background:var(--ink);border-radius:2px;
}
.nav-toggle span::before{top:-6px}
.nav-toggle span::after{top:6px}
@media(max-width:991px){
  .nav-menu{
    position:fixed;top:0;right:0;height:100vh;width:min(320px,86vw);
    background:#fff;flex-direction:column;align-items:stretch;gap:6px;
    padding:88px 20px 24px;box-shadow:var(--sh-3);
    transform:translateX(105%);transition:transform .28s ease;z-index:70;margin-left:0;
  }
  .nav-menu.open{transform:translateX(0)}
  .nav-menu a{padding:13px 14px;border-radius:12px;font-size:16px}
  .nav-menu a.active::after{display:none}
  .nav-toggle{display:flex;z-index:80}
  .nav-cta{display:none}
  .nav-backdrop{
    position:fixed;inset:0;background:rgba(22,33,43,.45);opacity:0;pointer-events:none;
    transition:opacity .25s ease;z-index:65;
  }
  .nav-backdrop.show{opacity:1;pointer-events:auto}
}

/* 面包屑 */
.breadcrumb{padding:20px 0 0;font-size:13.5px;color:var(--muted)}
.breadcrumb ol{display:flex;flex-wrap:wrap;gap:8px;align-items:center}
.breadcrumb li::after{content:"/";margin-left:8px;color:#B9C4CC}
.breadcrumb li:last-child::after{content:""}
.breadcrumb a{color:var(--muted)}
.breadcrumb a:hover{color:var(--brand)}
.breadcrumb .current{color:var(--ink);font-weight:500}

/* 通用板块 */
.section{padding:var(--section) 0}
.section-head{max-width:720px;margin-bottom:44px}
.section-head h2{font-size:28px;font-weight:600;line-height:1.4;letter-spacing:-.01em}
.section-head p{margin-top:14px;color:var(--muted);font-size:16px}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  padding:5px 12px;border-radius:999px;background:var(--green-soft);color:#2F6F53;
  font-size:13px;font-weight:600;margin-bottom:16px;
}
.eyebrow::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--green)}

/* Hero */
.hero{padding:44px 0 clamp(48px,5vw,72px)}
.hero-grid{display:grid;grid-template-columns:1.05fr .95fr;gap:56px;align-items:center}
.hero h1{font-size:clamp(30px,4vw,44px);line-height:1.28;font-weight:700;letter-spacing:-.01em}
.hero .lede{margin-top:18px;font-size:17px;color:var(--muted);max-width:520px}
.badges{display:flex;flex-wrap:wrap;gap:10px;margin-top:24px}
.badge{
  display:inline-flex;align-items:center;gap:6px;
  padding:7px 14px;border-radius:999px;border:1px solid var(--line);
  background:#fff;font-size:13.5px;color:#33414C;font-weight:500;
}
.badge .dot{width:6px;height:6px;border-radius:50%;background:var(--brand)}
.badge.g .dot{background:var(--green)}
.badge.o .dot{background:var(--orange)}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:32px}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 24px;border-radius:var(--r-btn);
  font-size:15.5px;font-weight:600;cursor:pointer;border:1.5px solid transparent;
  transition:background .2s ease,color .2s ease,transform .2s ease,box-shadow .2s ease,border-color .2s ease;
}
.btn-primary{background:var(--brand);color:#fff;box-shadow:0 1px 2px rgba(22,33,43,.06)}
.btn-primary:hover{background:var(--brand-dark);color:#fff;transform:translateY(-1px);box-shadow:var(--sh-2)}
.btn-primary:active{transform:translateY(0);box-shadow:none}
.btn-ghost{background:#fff;color:var(--brand-dark);border-color:var(--brand)}
.btn-ghost:hover{background:var(--brand-soft);color:var(--brand-dark);transform:translateY(-1px)}
.btn-ghost:active{transform:translateY(0)}
.btn-block{width:100%}
.hero-visual{position:relative}
.hero-shot{
  border-radius:var(--r-lg);overflow:hidden;border:1px solid var(--line);
  background:#fff;box-shadow:var(--sh-1);aspect-ratio:4/3;
}
.hero-shot img{width:100%;height:100%;object-fit:cover}
.float-card{
  position:absolute;background:#fff;border:1px solid var(--line);border-radius:var(--r-card);
  box-shadow:var(--sh-1);padding:14px 16px;min-width:170px;
}
.float-card span{display:block;font-size:12.5px;color:var(--muted)}
.float-card b{display:block;font-size:19px;margin-top:4px;font-variant-numeric:tabular-nums;letter-spacing:-.01em}
.float-card.fc-a{left:-18px;bottom:38px}
.float-card.fc-b{right:-14px;top:32px}
.float-card .bar{height:6px;border-radius:4px;background:var(--brand-soft);margin-top:10px;overflow:hidden}
.float-card .bar i{display:block;height:100%;width:72%;background:var(--brand);border-radius:4px}
@media(max-width:991px){
  .hero-grid{grid-template-columns:1fr;gap:36px}
  .hero .lede{max-width:none}
  .float-card.fc-a{left:8px;bottom:16px}
  .float-card.fc-b{right:8px;top:16px;min-width:150px}
}
@media(max-width:520px){
  .float-card.fc-b{display:none}
  .float-card.fc-a{position:static;margin-top:16px;width:100%}
}

/* 能力总览卡 */
.overview-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:var(--gap)}
.cap-card{
  background:var(--card);border:1px solid var(--line);border-radius:var(--r-card);
  padding:26px;box-shadow:var(--sh-1);position:relative;overflow:hidden;
  transition:transform .22s ease,box-shadow .22s ease,border-color .22s ease;
}
.cap-card::before{content:"";position:absolute;left:0;top:0;bottom:0;width:3px;background:var(--brand-soft)}
.cap-card:hover{transform:translateY(-3px);box-shadow:var(--sh-2);border-color:#CFE0F0}
.cap-card:hover::before{background:var(--brand)}
.cap-top{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-bottom:14px}
.cap-index{font-size:13px;font-weight:700;color:var(--brand);font-variant-numeric:tabular-nums}
.status{font-size:12px;font-weight:600;padding:4px 10px;border-radius:999px}
.status.on{background:var(--green-soft);color:#2F6F53}
.status.part{background:#FDF1E6;color:#A65A1C}
.status.need{background:var(--brand-soft);color:var(--brand-dark)}
.cap-card h3{font-size:19px;font-weight:600;margin-bottom:10px}
.cap-card p{font-size:14.5px;color:var(--muted)}
.cap-list{margin-top:16px;display:flex;flex-direction:column;gap:8px}
.cap-list li{font-size:14px;color:#33414C;display:flex;gap:8px;align-items:flex-start}
.cap-list li::before{content:"";width:5px;height:5px;border-radius:50%;background:var(--green);margin-top:9px;flex:none}
@media(max-width:991px){.overview-grid{grid-template-columns:repeat(2,1fr)}}
@media(max-width:640px){.overview-grid{grid-template-columns:1fr}}

/* Z 字形图文 */
.zrows{display:flex;flex-direction:column;gap:clamp(40px,5vw,72px)}
.zrow{display:grid;grid-template-columns:1fr 1fr;gap:clamp(28px,4vw,56px);align-items:center}
.zrow.reverse .z-media{order:-1}
.z-media{
  border-radius:var(--r-lg);overflow:hidden;border:1px solid var(--line);
  background:#fff;box-shadow:var(--sh-1);aspect-ratio:16/9;
}
.z-media img{width:100%;height:100%;object-fit:cover}
.z-body .tag{
  display:inline-block;padding:4px 11px;border-radius:999px;background:var(--brand-soft);
  color:var(--brand-dark);font-size:12.5px;font-weight:600;margin-bottom:14px;
}
.z-body h2{font-size:26px;font-weight:600;line-height:1.4;letter-spacing:-.01em}
.z-body p{margin-top:14px;color:var(--muted);font-size:16px}
.z-points{margin-top:20px;display:flex;flex-direction:column;gap:12px}
.z-points li{display:flex;gap:11px;align-items:flex-start;font-size:15px;color:#33414C}
.z-points li .tick{
  width:20px;height:20px;border-radius:6px;background:var(--green-soft);flex:none;margin-top:3px;
  display:flex;align-items:center;justify-content:center;
}
.z-points li .tick svg{width:12px;height:12px}
.link-more{
  display:inline-flex;align-items:center;gap:6px;margin-top:22px;font-size:15px;font-weight:600;
  color:var(--brand);text-decoration:underline;text-underline-offset:4px;text-decoration-thickness:1px;
}
.link-more:hover{text-decoration-thickness:2px}
@media(max-width:900px){
  .zrow{grid-template-columns:1fr;gap:24px}
  .zrow.reverse .z-media{order:0}
}

/* 流程时间线 */
.steps{display:grid;grid-template-columns:repeat(4,1fr);gap:var(--gap);position:relative}
.step{
  background:var(--card);border:1px solid var(--line);border-radius:var(--r-card);
  padding:24px;box-shadow:var(--sh-1);
}
.step .num{
  width:34px;height:34px;border-radius:50%;background:var(--brand);color:#fff;
  display:flex;align-items:center;justify-content:center;font-size:14px;font-weight:700;
  font-variant-numeric:tabular-nums;margin-bottom:16px;
}
.step h3{font-size:17px;font-weight:600;margin-bottom:8px}
.step p{font-size:14px;color:var(--muted)}
@media(max-width:991px){.steps{grid-template-columns:repeat(2,1fr)}}
@media(max-width:560px){.steps{grid-template-columns:1fr}}

/* FAQ */
.faq-wrap{display:grid;grid-template-columns:.85fr 1.15fr;gap:clamp(28px,4vw,56px);align-items:start}
.faq-side{background:var(--card);border:1px solid var(--line);border-radius:var(--r-lg);padding:28px;box-shadow:var(--sh-1)}
.faq-side h2{font-size:24px;font-weight:600;line-height:1.45}
.faq-side p{margin-top:14px;color:var(--muted);font-size:15px}
.faq-side .side-note{
  margin-top:22px;padding:16px;border-radius:var(--r-card);background:var(--brand-soft);
  font-size:14px;color:var(--brand-dark);
}
.faq-list{display:flex;flex-direction:column;gap:12px}
.faq-item{background:var(--card);border:1px solid var(--line);border-radius:var(--r-card);overflow:hidden;transition:box-shadow .2s ease,border-color .2s ease}
.faq-item.open{border-color:#CFE0F0;box-shadow:var(--sh-1)}
.faq-q{
  width:100%;display:flex;align-items:center;gap:14px;text-align:left;
  padding:18px 20px;background:transparent;border:0;cursor:pointer;
  font-size:16px;font-weight:600;color:var(--ink);
}
.faq-item.open .faq-q{color:var(--brand-dark)}
.faq-q .chev{
  margin-left:auto;flex:none;width:22px;height:22px;border-radius:50%;
  background:#F1F4F7;display:flex;align-items:center;justify-content:center;
  transition:transform .25s ease,background .25s ease;
}
.faq-q .chev svg{width:12px;height:12px}
.faq-item.open .chev{transform:rotate(180deg);background:var(--brand-soft)}
.faq-a{max-height:0;overflow:hidden;transition:max-height .28s ease}
.faq-a .inner{
  padding:0 20px 20px 20px;font-size:15px;color:var(--muted);
  border-left:4px solid transparent;
}
.faq-item.open .faq-a .inner{border-left-color:var(--brand);padding-left:20px}
@media(max-width:900px){.faq-wrap{grid-template-columns:1fr}}

/* CTA 条 */
.cta-band{
  background:var(--brand-soft);border:1px solid #D8E6F4;border-radius:var(--r-lg);
  padding:clamp(28px,4vw,48px);display:grid;grid-template-columns:1.3fr .7fr;gap:32px;align-items:center;
}
.cta-band h2{font-size:26px;font-weight:600;line-height:1.45}
.cta-band p{margin-top:12px;color:#3B4B58;font-size:15.5px;max-width:640px}
.cta-actions{display:flex;flex-direction:column;gap:12px;justify-self:end;width:100%;max-width:260px}
@media(max-width:900px){
  .cta-band{grid-template-columns:1fr}
  .cta-actions{justify-self:start;max-width:none}
}

/* 页脚 */
.site-footer{background:#101C26;color:#C6D2DB;padding:64px 0 0;margin-top:var(--section)}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:40px;padding-bottom:44px}
.footer-brand .logo{color:#fff}
.footer-brand .logo-text b{color:#fff}
.footer-brand .logo-text span{color:#8FA3B0}
.footer-brand p{margin-top:18px;font-size:14px;color:#93A5B1;max-width:320px;line-height:1.8}
.footer-col h4{font-size:15px;color:#fff;margin-bottom:16px;font-weight:600}
.footer-col ul{display:flex;flex-direction:column;gap:10px}
.footer-col a{color:#A9BAC6;font-size:14px}
.footer-col a:hover{color:#8FD3B3}
.footer-col li{font-size:14px;color:#A9BAC6}
.footer-col .domain{color:#8FD3B3;font-size:14px}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.1);padding:20px 0 28px;
  display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;
  font-size:13px;color:#7E92A0;
}
@media(max-width:991px){.footer-grid{grid-template-columns:1fr 1fr}}
@media(max-width:560px){.footer-grid{grid-template-columns:1fr;gap:28px}}

/* 浮动按钮与弹层 */
.float-btn{
  position:fixed;right:24px;bottom:24px;z-index:55;
  display:inline-flex;align-items:center;gap:8px;
  height:52px;padding:0 22px;border-radius:999px;border:0;cursor:pointer;
  background:var(--brand);color:#fff;font-size:15px;font-weight:600;
  box-shadow:0 12px 28px rgba(44,107,176,.32);
  transition:background .2s ease,transform .2s ease;
}
.float-btn:hover{background:var(--brand-dark);transform:translateY(-2px)}
.float-btn:active{transform:translateY(0)}
.float-btn svg{width:18px;height:18px}
@media(max-width:560px){
  .float-btn{right:16px;bottom:16px;width:52px;padding:0;justify-content:center}
  .float-btn span{display:none}
}
.modal{
  position:fixed;inset:0;z-index:90;display:none;
  align-items:center;justify-content:center;padding:24px;
}
.modal.show{display:flex}
.modal-mask{position:absolute;inset:0;background:rgba(22,33,43,.45)}
.modal-card{
  position:relative;width:640px;max-width:100%;max-height:92vh;overflow:auto;
  background:#fff;border-radius:16px;box-shadow:var(--sh-3);padding:28px;
}
.modal-head{display:flex;align-items:flex-start;gap:16px;margin-bottom:20px}
.modal-head h3{font-size:20px;font-weight:600}
.modal-head p{font-size:14px;color:var(--muted);margin-top:6px}
.modal-close{
  margin-left:auto;width:44px;height:44px;flex:none;border:1px solid var(--line);
  background:#fff;border-radius:12px;cursor:pointer;display:flex;align-items:center;justify-content:center;
}
.modal-close:hover{background:#F1F4F7}
.modal-close svg{width:16px;height:16px}
.field{margin-bottom:16px}
.field label{display:block;font-size:14px;font-weight:600;margin-bottom:8px}
.field input,.field select,.field textarea{
  width:100%;border:1px solid var(--line);border-radius:var(--r-btn);
  padding:0 14px;height:48px;font-size:15px;color:var(--ink);background:#fff;
  transition:border-color .2s ease,box-shadow .2s ease;
}
.field textarea{height:96px;padding:12px 14px;resize:vertical;line-height:1.6}
.field input:focus,.field select:focus,.field textarea:focus{
  border-color:var(--brand);box-shadow:0 0 0 3px rgba(44,107,176,.15);outline:none;
}
.field .hint{font-size:13px;color:var(--muted);margin-top:6px}
.field.error input,.field.error select{border-color:#D9542B}
.field.error .hint{color:#C1512B}
.agree{display:flex;gap:10px;align-items:flex-start;font-size:13.5px;color:var(--muted);margin:6px 0 20px}
.agree input{width:18px;height:18px;margin-top:2px;flex:none;accent-color:var(--brand)}
.privacy-note{font-size:13px;color:var(--muted);padding:18px 0 0}
.privacy-note a{text-decoration:underline;text-underline-offset:4px}
@media(max-width:560px){
  .modal{padding:0;align-items:flex-end}
  .modal-card{width:100%;max-width:100%;border-radius:16px 16px 0 0;max-height:94vh;padding:22px}
}

/* roulang page: category4 */
:root{
  --primary:#2C6BB0;
  --primary-dark:#1B4A7A;
  --primary-soft:#EDF3FA;
  --green:#3F8F6B;
  --green-soft:#EAF4EF;
  --orange:#D97A2B;
  --bg:#F5F7F8;
  --card:#FFFFFF;
  --text:#16212B;
  --muted:#56656F;
  --border:#E4EAEE;
  --ink:#101C26;
  --r-card:14px;
  --r-btn:10px;
  --r-lg:20px;
  --sh-1:0 1px 2px rgba(22,33,43,.04),0 8px 24px rgba(22,33,43,.06);
  --sh-2:0 16px 40px rgba(44,107,176,.12);
  --sh-3:0 24px 64px rgba(22,33,43,.18);
  --section:clamp(48px,7vw,96px);
  --font:-apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei","Source Han Sans SC","Helvetica Neue",Arial,sans-serif;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:var(--font);
  font-size:16px;
  line-height:1.75;
  color:var(--text);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;height:auto;}
a{color:var(--primary);text-decoration:none;text-underline-offset:4px;}
a:hover{text-decoration:underline;}
button,input,select,textarea{font:inherit;color:inherit;}
h1,h2,h3,h4,p,ul,ol{margin:0;}
ul,ol{padding:0;list-style:none;}
:focus-visible{outline:2px solid rgba(44,107,176,.55);outline-offset:2px;border-radius:4px;}

.container{width:100%;max-width:1200px;margin:0 auto;padding:0 32px;}
.section{padding:var(--section) 0;}
.section--tight{padding:calc(var(--section) * .62) 0;}
.section-head{max-width:760px;margin-bottom:40px;}
.section-head h2{font-size:28px;font-weight:600;line-height:1.4;letter-spacing:-.01em;}
.section-head p{margin-top:14px;color:var(--muted);font-size:16px;}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;font-weight:600;color:var(--green);
  background:var(--green-soft);border-radius:999px;padding:5px 14px;margin-bottom:16px;
}
.eyebrow::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--green);}

/* ---------- header ---------- */
.site-header{
  position:sticky;top:0;z-index:80;
  background:rgba(255,255,255,.94);
  border-bottom:1px solid var(--border);
  transition:height .25s ease,box-shadow .25s ease;
}
.header-inner{
  display:flex;align-items:center;justify-content:space-between;gap:24px;
  height:72px;transition:height .25s ease;
}
.site-header.is-scrolled .header-inner{height:60px;}
.site-header.is-scrolled{box-shadow:0 6px 20px rgba(22,33,43,.06);}
.logo{display:flex;align-items:center;gap:10px;text-decoration:none;flex:0 0 auto;}
.logo:hover{text-decoration:none;}
.logo-mark{
  width:38px;height:38px;border-radius:11px;
  background:linear-gradient(150deg,var(--primary) 0%,var(--primary-dark) 100%);
  display:grid;place-items:center;flex:0 0 auto;
}
.logo-mark svg{width:21px;height:21px;}
.logo-text{display:flex;flex-direction:column;line-height:1.15;}
.logo-text b{font-size:17px;font-weight:700;color:var(--text);letter-spacing:-.01em;}
.logo-text span{font-size:12px;color:var(--muted);}
.nav-menu{display:flex;align-items:center;gap:4px;}
.nav-menu a{
  position:relative;
  display:inline-block;padding:9px 14px;border-radius:999px;
  font-size:15px;color:var(--muted);text-decoration:none;
  transition:background .2s ease,color .2s ease;
}
.nav-menu a:hover{background:#F1F4F7;color:var(--text);text-decoration:none;}
.nav-menu a.active{background:var(--primary-soft);color:var(--primary);font-weight:600;}
.nav-menu a.active::after{
  content:"";position:absolute;left:14px;right:14px;bottom:2px;height:2px;
  border-radius:2px;background:var(--primary);
}
.nav-actions{display:flex;align-items:center;gap:12px;}
.nav-toggle{
  display:none;width:42px;height:42px;border-radius:10px;
  border:1px solid var(--border);background:#fff;cursor:pointer;align-items:center;justify-content:center;
}
.nav-toggle span{display:block;width:18px;height:2px;background:var(--text);position:relative;border-radius:2px;}
.nav-toggle span::before,.nav-toggle span::after{
  content:"";position:absolute;left:0;width:18px;height:2px;background:var(--text);border-radius:2px;
}
.nav-toggle span::before{top:-6px;}
.nav-toggle span::after{top:6px;}

/* ---------- buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:46px;padding:0 22px;border-radius:var(--r-btn);
  font-size:15px;font-weight:600;cursor:pointer;border:1.5px solid transparent;
  transition:transform .18s ease,box-shadow .18s ease,background .18s ease,color .18s ease,border-color .18s ease;
  text-decoration:none;white-space:nowrap;
}
.btn:hover{text-decoration:none;}
.btn-primary{background:var(--primary);color:#fff;box-shadow:0 8px 20px rgba(44,107,176,.22);}
.btn-primary:hover{background:var(--primary-dark);transform:translateY(-1px);box-shadow:0 14px 32px rgba(44,107,176,.28);}
.btn-primary:active{transform:translateY(0);box-shadow:0 6px 14px rgba(44,107,176,.2);}
.btn-ghost{background:#fff;color:var(--primary);border-color:var(--primary);}
.btn-ghost:hover{background:var(--primary-soft);transform:translateY(-1px);}
.btn-ghost:active{transform:translateY(0);}
.btn-sm{height:40px;padding:0 16px;font-size:14px;}
.btn-block{width:100%;}
.btn[disabled],.btn.is-disabled{opacity:.5;cursor:not-allowed;transform:none;box-shadow:none;}

/* ---------- breadcrumb ---------- */
.breadcrumb{padding:18px 0 0;font-size:13px;color:var(--muted);}
.breadcrumb ol{display:flex;flex-wrap:wrap;align-items:center;gap:8px;}
.breadcrumb li::after{content:"/";margin-left:8px;color:#C3CDD4;}
.breadcrumb li:last-child::after{content:"";margin:0;}
.breadcrumb a{color:var(--muted);}
.breadcrumb a:hover{color:var(--primary);}
.breadcrumb [aria-current]{color:var(--text);font-weight:600;}

/* ---------- hero ---------- */
.faq-hero{
  position:relative;overflow:hidden;
  background-image:linear-gradient(105deg,rgba(237,243,250,.96) 0%,rgba(237,243,250,.86) 52%,rgba(234,244,239,.82) 100%),url('/assets/images/backpic/back-1.webp');
  background-size:cover;background-position:center;
  border-bottom:1px solid var(--border);
}
.faq-hero__inner{
  display:grid;grid-template-columns:minmax(0,1.08fr) minmax(0,.92fr);
  gap:56px;align-items:center;padding:64px 0 72px;
}
.faq-hero h1{
  font-size:clamp(30px,3.4vw,44px);font-weight:700;line-height:1.28;letter-spacing:-.01em;
}
.faq-hero h1 em{font-style:normal;color:var(--primary);}
.faq-hero .lede{margin-top:18px;font-size:17px;color:#33424E;max-width:560px;}
.badge-row{display:flex;flex-wrap:wrap;gap:10px;margin-top:22px;}
.badge{
  display:inline-flex;align-items:center;gap:6px;
  padding:6px 14px;border-radius:999px;font-size:13px;font-weight:600;
  background:#fff;border:1px solid var(--border);color:var(--primary-dark);
}
.badge--green{background:var(--green-soft);border-color:#D3E7DC;color:#2F7155;}
.badge--orange{background:#FDF1E6;border-color:#F4DCC5;color:#A75B18;}
.hero-cta{display:flex;flex-wrap:wrap;gap:14px;margin-top:30px;}

.search-panel{
  margin-top:34px;background:#fff;border:1px solid var(--border);border-radius:var(--r-lg);
  padding:18px;box-shadow:var(--sh-1);max-width:620px;
}
.search-panel label{display:block;font-size:13px;font-weight:600;color:var(--muted);margin-bottom:10px;}
.search-box{display:flex;gap:10px;}
.search-box input{
  flex:1 1 auto;height:48px;padding:0 16px;border:1px solid var(--border);
  border-radius:var(--r-btn);background:#FBFCFD;transition:border-color .18s ease,box-shadow .18s ease;
}
.search-box input::placeholder{color:#9AA7B0;}
.search-box input:focus{outline:none;border-color:var(--primary);box-shadow:0 0 0 3px rgba(44,107,176,.14);background:#fff;}
.search-hint{margin-top:10px;font-size:13px;color:var(--muted);}

.hero-visual{position:relative;}
.device-frame{
  background:#fff;border:1px solid var(--border);border-radius:var(--r-lg);
  padding:12px;box-shadow:var(--sh-2);
}
.device-frame__bar{display:flex;gap:6px;padding:4px 6px 12px;}
.device-frame__bar i{width:9px;height:9px;border-radius:50%;background:#DCE3E8;display:block;}
.device-frame__bar i:first-child{background:#E6C9C2;}
.device-frame__bar i:nth-child(2){background:#EADFC0;}
.device-frame__bar i:nth-child(3){background:#CDE4D7;}
.device-frame__img{aspect-ratio:16/10;border-radius:12px;overflow:hidden;background:var(--primary-soft);}
.device-frame__img img{width:100%;height:100%;object-fit:cover;}
.float-card{
  position:absolute;background:#fff;border:1px solid var(--border);border-radius:12px;
  padding:12px 16px;box-shadow:var(--sh-1);min-width:158px;
}
.float-card b{display:block;font-size:20px;font-weight:700;font-variant-numeric:tabular-nums;color:var(--primary-dark);}
.float-card span{font-size:12px;color:var(--muted);}
.float-card--a{left:-26px;top:56px;}
.float-card--b{right:-18px;bottom:38px;}
.float-card--b b{color:var(--green);}

/* ---------- quick cards ---------- */
.quick-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:20px;}
.quick-card{
  position:relative;display:flex;gap:18px;align-items:flex-start;
  background:#fff;border:1px solid var(--border);border-radius:var(--r-card);
  padding:24px 24px 24px 26px;box-shadow:var(--sh-1);
  transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
}
.quick-card::before{
  content:"";position:absolute;left:0;top:22px;bottom:22px;width:3px;border-radius:0 3px 3px 0;background:var(--primary);
}
.quick-card:nth-child(2)::before{background:var(--green);}
.quick-card:nth-child(3)::before{background:var(--orange);}
.quick-card:nth-child(4)::before{background:var(--primary-dark);}
.quick-card:hover{transform:translateY(-3px);box-shadow:var(--sh-2);border-color:#CFE0F0;}
.quick-card__no{
  flex:0 0 auto;width:38px;height:38px;border-radius:11px;background:var(--primary-soft);
  color:var(--primary);font-weight:700;display:grid;place-items:center;font-size:15px;
}
.quick-card h3{font-size:18px;font-weight:600;margin-bottom:8px;}
.quick-card p{font-size:14px;color:var(--muted);}
.quick-card a{display:inline-block;margin-top:10px;font-size:14px;font-weight:600;}

/* ---------- faq ---------- */
.faq-wrap{display:grid;grid-template-columns:minmax(0,248px) minmax(0,1fr);gap:44px;align-items:start;}
.faq-aside{position:sticky;top:96px;}
.faq-aside h3{font-size:15px;font-weight:600;color:var(--muted);margin-bottom:14px;}
.faq-aside ul{display:flex;flex-direction:column;gap:4px;border-left:2px solid var(--border);}
.faq-aside a{
  display:block;padding:9px 0 9px 16px;font-size:15px;color:var(--muted);
  border-left:2px solid transparent;margin-left:-2px;
}
.faq-aside a:hover{color:var(--primary);text-decoration:none;border-left-color:#BFD5EA;}
.faq-aside a.is-current{color:var(--primary);font-weight:600;border-left-color:var(--primary);}
.aside-card{
  margin-top:26px;background:var(--green-soft);border:1px solid #D3E7DC;
  border-radius:var(--r-card);padding:20px;
}
.aside-card b{display:block;font-size:15px;color:#2F7155;margin-bottom:8px;}
.aside-card p{font-size:13px;color:#41634F;}

.faq-group{margin-bottom:36px;}
.faq-group-title{
  display:flex;align-items:center;gap:10px;
  font-size:16px;font-weight:600;color:var(--primary-dark);margin-bottom:14px;
}
.faq-group-title::before{content:"";width:8px;height:8px;border-radius:2px;background:var(--primary);}
.faq-item{
  background:#fff;border:1px solid var(--border);border-radius:var(--r-card);
  margin-bottom:12px;overflow:hidden;transition:border-color .2s ease,box-shadow .2s ease;
}
.faq-item:hover{border-color:#CFE0F0;box-shadow:var(--sh-1);}
.faq-item.is-open{border-color:#BFD5EA;box-shadow:var(--sh-1);}
.faq-q{
  width:100%;display:flex;align-items:flex-start;justify-content:space-between;gap:18px;
  padding:20px 24px;background:none;border:0;text-align:left;cursor:pointer;
  font-size:17px;font-weight:600;line-height:1.55;color:var(--text);
  border-left:4px solid transparent;transition:border-color .2s ease,color .2s ease;
}
.faq-item.is-open .faq-q{border-left-color:var(--primary);color:var(--primary-dark);}
.faq-q .chev{
  flex:0 0 auto;width:26px;height:26px;border-radius:50%;background:var(--primary-soft);
  display:grid;place-items:center;transition:transform .25s ease;margin-top:2px;
}
.faq-q .chev svg{width:13px;height:13px;stroke:var(--primary);}
.faq-item.is-open .chev{transform:rotate(180deg);}
.faq-a{
  max-height:0;overflow:hidden;transition:max-height .3s ease;
}
.faq-a__inner{
  padding:0 24px 22px 28px;font-size:15.5px;color:#38474F;line-height:1.85;
  border-top:1px dashed var(--border);margin:0 24px 0 24px;padding:16px 0 22px;
}
.faq-a__inner p+p{margin-top:12px;}
.faq-a__inner ul{margin-top:10px;display:flex;flex-direction:column;gap:8px;}
.faq-a__inner li{position:relative;padding-left:16px;font-size:15px;color:#45535C;}
.faq-a__inner li::before{
  content:"";position:absolute;left:0;top:11px;width:6px;height:6px;border-radius:50%;background:var(--green);
}
.faq-empty{
  display:none;text-align:center;padding:56px 24px;background:#fff;
  border:1px dashed var(--border);border-radius:var(--r-card);
}
.faq-empty.is-show{display:block;}
.faq-empty svg{width:48px;height:48px;margin:0 auto 16px;stroke:#A9B6BF;}
.faq-empty p{color:var(--muted);font-size:15px;}
.faq-empty .btn{margin-top:18px;}

/* ---------- steps ---------- */
.steps-band{background:#fff;border-top:1px solid var(--border);border-bottom:1px solid var(--border);}
.steps-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:0;}
.step{
  position:relative;padding:32px 26px 32px 0;
}
.step+.step{padding-left:30px;border-left:1px solid var(--border);}
.step__no{
  display:inline-grid;place-items:center;width:34px;height:34px;border-radius:10px;
  background:var(--primary-soft);color:var(--primary);font-weight:700;font-size:15px;
  font-variant-numeric:tabular-nums;margin-bottom:16px;
}
.step h3{font-size:17px;font-weight:600;margin-bottom:8px;}
.step p{font-size:14px;color:var(--muted);}

/* ---------- stats ---------- */
.stats-band{background:var(--primary-soft);}
.stats-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:20px;}
.stat{
  background:#fff;border:1px solid #DCE7F2;border-radius:var(--r-card);
  padding:26px 24px;transition:transform .2s ease,box-shadow .2s ease;
}
.stat:hover{transform:translateY(-3px);box-shadow:var(--sh-2);}
.stat b{
  display:block;font-size:34px;line-height:1.1;font-weight:700;color:var(--primary-dark);
  font-variant-numeric:tabular-nums;letter-spacing:-.02em;
}
.stat b i{font-style:normal;font-size:16px;font-weight:600;color:var(--muted);margin-left:4px;}
.stat span{display:block;margin-top:10px;font-size:14px;color:var(--muted);}
.stat:nth-child(3) b{color:var(--orange);}

/* ---------- help ---------- */
.help-band{background:#fff;border-top:1px solid var(--border);}
.help-grid{display:grid;grid-template-columns:minmax(0,.9fr) minmax(0,1.1fr);gap:52px;align-items:start;}
.help-intro h2{font-size:28px;font-weight:600;line-height:1.4;}
.help-intro p{margin-top:16px;color:var(--muted);}
.help-list{margin-top:26px;display:flex;flex-direction:column;gap:14px;}
.help-list li{display:flex;gap:12px;font-size:15px;color:#3A4952;}
.help-list svg{flex:0 0 auto;width:20px;height:20px;margin-top:3px;stroke:var(--green);}
.help-meta{
  margin-top:28px;padding:20px;border:1px solid var(--border);border-radius:var(--r-card);
  background:var(--bg);font-size:14px;color:var(--muted);
}
.help-meta b{color:var(--text);}

.form-card{
  background:#fff;border:1px solid var(--border);border-radius:var(--r-lg);
  padding:30px;box-shadow:var(--sh-1);
}
.form-card h3{font-size:20px;font-weight:600;margin-bottom:6px;}
.form-card>.form-note{font-size:13px;color:var(--muted);margin-bottom:22px;}
.field{margin-bottom:18px;}
.field label{display:block;font-size:14px;font-weight:600;margin-bottom:8px;}
.field label .req{color:var(--orange);margin-left:2px;}
.field input,.field select,.field textarea{
  width:100%;border:1px solid var(--border);border-radius:var(--r-btn);
  background:#FBFCFD;padding:0 14px;height:48px;transition:border-color .18s ease,box-shadow .18s ease;
}
.field textarea{height:auto;padding:12px 14px;min-height:108px;resize:vertical;line-height:1.7;}
.field input:focus,.field select:focus,.field textarea:focus{
  outline:none;border-color:var(--primary);background:#fff;box-shadow:0 0 0 3px rgba(44,107,176,.14);
}
.field .err{display:none;margin-top:7px;font-size:13px;color:#C4552A;}
.field.has-error input,.field.has-error select,.field.has-error textarea{border-color:#E08B63;}
.field.has-error .err{display:block;}
.field-row{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:16px;}
.check-line{display:flex;gap:10px;align-items:flex-start;font-size:13.5px;color:var(--muted);margin:4px 0 20px;}
.check-line input{width:18px;height:18px;margin-top:3px;flex:0 0 auto;accent-color:var(--primary);}
.form-tip{
  display:none;margin-top:16px;padding:12px 16px;border-radius:var(--r-btn);
  background:var(--green-soft);border:1px solid #D3E7DC;color:#2F7155;font-size:14px;
}
.form-tip.is-show{display:block;}

/* ---------- cta ---------- */
.cta-band{background:var(--ink);color:#E8EEF3;}
.cta-inner{
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:28px;
  padding:56px 0;
}
.cta-inner h2{font-size:26px;font-weight:600;color:#fff;}
.cta-inner p{margin-top:10px;color:#A9BAC6;font-size:15px;max-width:640px;}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px;}
.btn-onink{background:#fff;color:var(--primary-dark);}
.btn-onink:hover{background:#E8EEF3;transform:translateY(-1px);}
.btn-outline-light{background:transparent;color:#fff;border-color:rgba(255,255,255,.42);}
.btn-outline-light:hover{background:rgba(255,255,255,.1);transform:translateY(-1px);}

/* ---------- footer ---------- */
.site-footer{background:var(--ink);color:#B7C4CE;padding-top:64px;}
.footer-grid{
  display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:40px;
  padding-bottom:44px;border-bottom:1px solid rgba(255,255,255,.1);
}
.footer-brand .logo{margin-bottom:18px;}
.footer-brand .logo-text b{color:#fff;}
.footer-brand .logo-text span{color:#93A5B2;}
.footer-brand p{font-size:14px;line-height:1.85;color:#93A5B2;max-width:360px;}
.footer-col h4{font-size:15px;font-weight:600;color:#fff;margin-bottom:16px;}
.footer-col ul{display:flex;flex-direction:column;gap:11px;}
.footer-col li{font-size:14px;color:#93A5B2;}
.footer-col a{color:#B7C4CE;text-decoration:none;transition:color .18s ease;}
.footer-col a:hover{color:#8FD3B4;text-decoration:none;}
.footer-col .domain{color:#8FD3B4;font-weight:600;}
.footer-bottom{
  display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;
  padding:22px 0 30px;font-size:13px;color:#7C8E9B;
}

/* ---------- floating ---------- */
.float-btn{
  position:fixed;right:24px;bottom:24px;z-index:70;
  display:inline-flex;align-items:center;gap:8px;
  height:52px;padding:0 22px;border-radius:999px;border:0;cursor:pointer;
  background:var(--primary);color:#fff;font-size:15px;font-weight:600;
  box-shadow:0 14px 32px rgba(44,107,176,.34);
  transition:transform .2s ease,background .2s ease;
}
.float-btn:hover{background:var(--primary-dark);transform:translateY(-2px);}
.float-btn svg{width:18px;height:18px;stroke:#fff;}

.drawer-mask{
  position:fixed;inset:0;background:rgba(22,33,43,.45);z-index:90;
  opacity:0;visibility:hidden;transition:opacity .25s ease,visibility .25s ease;
}
.drawer-mask.is-open{opacity:1;visibility:visible;}
.drawer{
  position:fixed;top:0;right:0;bottom:0;width:min(320px,86vw);z-index:95;
  background:#fff;box-shadow:var(--sh-3);
  transform:translateX(102%);transition:transform .28s ease;
  display:flex;flex-direction:column;padding:22px;
}
.drawer.is-open{transform:translateX(0);}
.drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:18px;}
.drawer-close{
  width:44px;height:44px;border-radius:12px;border:1px solid var(--border);background:#fff;
  display:grid;place-items:center;cursor:pointer;
}
.drawer-close svg{width:16px;height:16px;stroke:var(--text);}
.drawer nav{display:flex;flex-direction:column;gap:4px;}
.drawer nav a{
  padding:13px 14px;border-radius:10px;font-size:15px;color:var(--muted);text-decoration:none;
}
.drawer nav a:hover{background:#F1F4F7;color:var(--text);}
.drawer nav a.active{background:var(--primary-soft);color:var(--primary);font-weight:600;}
.drawer-foot{margin-top:auto;padding-top:18px;border-top:1px solid var(--border);}

/* ---------- responsive ---------- */
@media (max-width:1279px){
  .container{padding:0 32px;}
}
@media (max-width:1024px){
  .container{padding:0 24px;}
  .faq-hero__inner{grid-template-columns:1fr;gap:40px;padding:48px 0 56px;}
  .hero-visual{max-width:560px;}
  .float-card--a{left:0;}
  .float-card--b{right:0;}
  .faq-wrap{grid-template-columns:1fr;gap:32px;}
  .faq-aside{position:static;}
  .faq-aside ul{flex-direction:row;flex-wrap:wrap;border-left:0;gap:8px;}
  .faq-aside a{border-left:0;padding:8px 14px;border-radius:999px;background:#fff;border:1px solid var(--border);}
  .faq-aside a.is-current{background:var(--primary-soft);border-color:#BFD5EA;}
  .steps-grid{grid-template-columns:repeat(2,minmax(0,1fr));}
  .step{padding:26px 22px 26px 0;}
  .step+.step{padding-left:24px;}
  .step:nth-child(3){border-left:0;padding-left:0;}
  .step:nth-child(3),.step:nth-child(4){border-top:1px solid var(--border);}
  .step:nth-child(4){padding-left:24px;}
  .stats-grid{grid-template-columns:repeat(2,minmax(0,1fr));}
  .help-grid{grid-template-columns:1fr;gap:36px;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
  .nav-menu{display:none;}
  .nav-toggle{display:flex;}
  .nav-actions .btn{display:none;}
}
@media (max-width:768px){
  .container{padding:0 24px;}
  .section{padding:64px 0;}
  .section-head h2{font-size:24px;}
  .quick-grid{grid-template-columns:1fr;}
  .steps-grid{grid-template-columns:1fr;}
  .step{padding:24px 0;}
  .step+.step{padding-left:0;border-left:0;border-top:1px solid var(--border);}
  .step:nth-child(4){padding-left:0;}
  .footer-grid{grid-template-columns:1fr;gap:30px;}
  .footer-bottom{flex-direction:column;gap:8px;}
  .faq-hero h1{font-size:28px;}
  .search-box{flex-direction:column;}
  .search-box .btn{width:100%;}
  .form-card{padding:22px;}
  .field-row{grid-template-columns:1fr;}
  .cta-inner{padding:44px 0;}
}
@media (max-width:520px){
  .container{padding:0 16px;}
  .section{padding:48px 0;}
  .logo-text b{font-size:15px;}
  .logo-text span{font-size:11px;}
  .stats-grid{grid-template-columns:1fr;}
  .hero-cta .btn{width:100%;}
  .float-card{padding:10px 13px;min-width:132px;}
  .float-card b{font-size:17px;}
  .float-card--a{top:14px;}
  .float-card--b{bottom:14px;}
  .faq-q{padding:16px 18px;font-size:16px;}
  .faq-a__inner{margin:0 18px;font-size:15px;}
  .float-btn{padding:0;width:54px;justify-content:center;}
  .float-btn span{display:none;}
}
@media (prefers-reduced-motion:reduce){
  *{transition:none !important;animation:none !important;}
  html{scroll-behavior:auto;}
}