/* roulang page: index */
:root{
  --bg-0:#060A14;
  --bg-1:#0A1120;
  --bg-2:#101B2E;
  --glass:rgba(255,255,255,.045);
  --glass-line:rgba(150,185,255,.14);
  --primary:#2E6BFF;
  --primary-hover:#4B84FF;
  --primary-pressed:#1F55D8;
  --accent:#FFB347;
  --ok:#2FD3A8;
  --warn:#FF7A6B;
  --text-1:#EAF1FF;
  --text-2:#A9B8D6;
  --text-3:#6E7F9E;
  --line:rgba(140,175,255,.16);
  --r-card:16px;
  --r-ctl:10px;
  --r-pill:999px;
  --shadow-card:0 18px 50px rgba(3,8,20,.55);
  --shadow-hover:0 24px 60px rgba(3,8,20,.62);
  --container:1200px;
  --sec-pad:96px;
  --font-cn:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",system-ui,sans-serif;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
html body{
  margin:0;
  background:var(--bg-0);
  color:var(--text-2);
  font-family:var(--font-cn);
  font-size:16px;
  line-height:1.75;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img{display:block;max-width:100%;height:auto;}
a{color:inherit;text-decoration:none;}
button{font-family:inherit;font-size:inherit;cursor:pointer;border:0;background:none;color:inherit;}
input,select,textarea{font-family:inherit;font-size:inherit;}
h1,h2,h3{margin:0;color:var(--text-1);font-weight:600;letter-spacing:.01em;}
h1{font-size:46px;line-height:1.25;}
h2{font-size:30px;line-height:1.35;}
h3{font-size:19px;line-height:1.5;}
p{margin:0;}
ul{margin:0;padding:0;list-style:none;}
.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 32px;}
.sec{position:relative;padding:var(--sec-pad) 0;}
.sec-tight{padding:72px 0;}
.sec-veil{position:relative;}
.sec-veil::after{
  content:"";
  position:absolute;left:0;right:0;bottom:0;height:200px;
  background-image:linear-gradient(rgba(140,175,255,.05) 1px,transparent 1px),linear-gradient(90deg,rgba(140,175,255,.05) 1px,transparent 1px);
  background-size:48px 48px;
  pointer-events:none;
}
.sec-head{max-width:720px;margin-bottom:48px;}
.sec-kicker{
  display:inline-flex;align-items:center;gap:8px;
  font-size:12px;letter-spacing:.08em;color:var(--accent);
  border:1px solid rgba(255,179,71,.28);
  background:rgba(255,179,71,.06);
  padding:4px 12px;border-radius:var(--r-pill);margin-bottom:16px;
}
.sec-kicker::before{content:"";width:5px;height:5px;border-radius:50%;background:var(--accent);}
.sec-sub{margin-top:14px;color:var(--text-2);font-size:16px;}

/* ---------- header / nav ---------- */
.site-header{
  position:fixed;top:0;left:0;right:0;z-index:60;
  transition:background .25s ease,border-color .25s ease,backdrop-filter .25s ease;
  border-bottom:1px solid transparent;
}
.site-header.is-scrolled{
  background:rgba(6,10,20,.84);
  border-bottom:1px solid var(--line);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
}
.nav{height:72px;display:flex;align-items:center;justify-content:space-between;gap:24px;}
.logo{display:inline-flex;align-items:center;gap:10px;font-size:18px;font-weight:600;color:var(--text-1);letter-spacing:.01em;}
.logo-mark{
  width:28px;height:28px;border-radius:9px;flex:0 0 auto;
  background:linear-gradient(140deg,var(--primary),#12E6C8 130%);
  box-shadow:0 6px 18px rgba(46,107,255,.42);
  position:relative;
}
.logo-mark::after{
  content:"";position:absolute;left:8px;right:8px;top:13px;height:2px;border-radius:2px;
  background:rgba(255,255,255,.85);
}
.logo-mark::before{
  content:"";position:absolute;left:12px;top:7px;width:2px;height:14px;border-radius:2px;
  background:rgba(255,255,255,.6);
}
.nav-links{display:flex;align-items:center;gap:4px;}
.nav-link{
  position:relative;display:inline-flex;align-items:center;
  height:44px;padding:0 14px;font-size:15px;color:var(--text-2);
  border-radius:var(--r-ctl);transition:color .18s ease;
}
.nav-link:hover{color:var(--text-1);}
.nav-link.is-active{color:var(--text-1);}
.nav-link.is-active::after{
  content:"";position:absolute;left:14px;right:14px;bottom:7px;height:2px;
  background:var(--primary);border-radius:2px;
}
.nav-link.is-active::before{
  content:"";position:absolute;left:3px;top:50%;transform:translateY(-50%);
  width:4px;height:4px;border-radius:50%;background:var(--accent);
}
.nav-right{display:flex;align-items:center;gap:14px;}
.nav-toggle{
  display:none;width:44px;height:44px;border-radius:var(--r-ctl);
  border:1px solid var(--glass-line);align-items:center;justify-content:center;
}
.nav-toggle span{display:block;width:18px;height:1.5px;background:var(--text-1);position:relative;}
.nav-toggle span::before,.nav-toggle span::after{
  content:"";position:absolute;left:0;width:18px;height:1.5px;background:var(--text-1);
}
.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;
  min-height:44px;padding:0 22px;border-radius:var(--r-ctl);
  font-size:15px;font-weight:500;letter-spacing:.01em;
  transition:background .18s ease,box-shadow .18s ease,transform .18s ease,border-color .18s ease,color .18s ease;
  white-space:nowrap;
}
.btn-primary{
  background:var(--primary);color:#fff;
  box-shadow:0 8px 24px rgba(46,107,255,.35);
}
.btn-primary:hover{background:var(--primary-hover);box-shadow:0 10px 30px rgba(46,107,255,.45);transform:translateY(-1px);}
.btn-primary:active{background:var(--primary-pressed);transform:translateY(0);}
.btn-outline{
  background:transparent;color:var(--text-1);border:1px solid var(--glass-line);
}
.btn-outline:hover{border-color:rgba(255,179,71,.4);color:#fff;}
.btn-text{
  display:inline-flex;align-items:center;gap:6px;color:var(--text-1);
  font-size:15px;font-weight:500;padding:6px 0;
}
.btn-text .arw{transition:transform .18s ease;display:inline-block;}
.btn-text:hover{color:var(--accent);}
.btn-text:hover .arw{transform:translateX(3px);}
.btn:focus-visible,.nav-link:focus-visible,.btn-text:focus-visible,.faq-q:focus-visible,.to-top:focus-visible,a:focus-visible{
  outline:2px solid rgba(255,179,71,.75);outline-offset:2px;border-radius:8px;
}

/* ---------- hero ---------- */
.hero{position:relative;padding:152px 0 96px;overflow:hidden;}
.hero::before{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:linear-gradient(rgba(140,175,255,.05) 1px,transparent 1px),linear-gradient(90deg,rgba(140,175,255,.05) 1px,transparent 1px);
  background-size:48px 48px;
  -webkit-mask-image:linear-gradient(to bottom,rgba(0,0,0,.85),rgba(0,0,0,0));
  mask-image:linear-gradient(to bottom,rgba(0,0,0,.85),rgba(0,0,0,0));
}
.hero-glow{
  position:absolute;width:420px;height:420px;border-radius:50%;
  background:radial-gradient(circle,rgba(46,107,255,.22),transparent 68%);
  top:60px;left:-80px;pointer-events:none;
}
.hero-grid{position:relative;display:grid;grid-template-columns:7fr 5fr;gap:56px;align-items:center;}
.hero-title{font-size:46px;line-height:1.25;}
.hero-title em{font-style:normal;color:var(--accent);}
.hero-desc{margin-top:20px;font-size:17px;line-height:1.8;color:var(--text-2);max-width:560px;}
.hero-actions{display:flex;flex-wrap:wrap;align-items:center;gap:18px;margin-top:32px;}
.hero-badges{display:flex;flex-wrap:wrap;gap:12px;margin-top:34px;}
.badge{
  display:inline-flex;align-items:center;gap:8px;
  padding:8px 14px;border-radius:var(--r-pill);
  border:1px solid var(--glass-line);background:var(--glass);
  font-size:13px;color:var(--text-2);
}
.badge::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--primary);}
.badge:nth-child(2)::before{background:var(--accent);}
.badge:nth-child(3)::before{background:var(--ok);}

.hero-panel{
  position:relative;border-radius:var(--r-card);overflow:hidden;
  border:1px solid var(--glass-line);background:var(--bg-2);
  box-shadow:var(--shadow-card);
}
.hero-panel img{width:100%;aspect-ratio:21/9;min-height:250px;object-fit:cover;opacity:.7;}
.hero-panel::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(to top,rgba(6,10,20,.94) 12%,rgba(6,10,20,.35) 58%,rgba(6,10,20,.2));
}
.hero-panel-inner{position:absolute;inset:0;z-index:2;display:flex;flex-direction:column;justify-content:space-between;padding:22px;}
.hero-panel-tag{
  align-self:flex-start;
  font-size:12px;color:var(--accent);
  border:1px solid rgba(255,179,71,.32);background:rgba(6,10,20,.6);
  padding:4px 10px;border-radius:var(--r-pill);
}
.hero-metrics{
  display:grid;grid-template-columns:repeat(3,1fr);gap:12px;
  background:rgba(10,17,32,.72);border:1px solid var(--glass-line);
  border-radius:14px;padding:16px;backdrop-filter:blur(16px);-webkit-backdrop-filter:blur(16px);
}
.hero-metric strong{
  display:block;font-size:24px;font-weight:600;color:var(--text-1);
  font-variant-numeric:tabular-nums;letter-spacing:-.01em;line-height:1.2;
}
.hero-metric strong span{font-size:13px;color:var(--text-3);margin-left:3px;font-weight:500;}
.hero-metric em{display:block;font-style:normal;font-size:12px;color:var(--text-3);margin-top:4px;}

/* ---------- kpi ---------- */
.kpi-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;}
.kpi-card{
  position:relative;background:var(--bg-2);border:1px solid var(--glass-line);
  border-radius:var(--r-card);padding:28px 24px;overflow:hidden;
  transition:border-color .18s ease,transform .18s ease;
}
.kpi-card::before{
  content:"";position:absolute;top:0;left:20px;right:20px;height:1px;
  background:linear-gradient(90deg,transparent,rgba(150,185,255,.55),transparent);
}
.kpi-card:hover{border-color:rgba(46,107,255,.34);transform:translateY(-2px);}
.kpi-num{
  font-size:38px;font-weight:600;color:var(--text-1);line-height:1.1;
  font-variant-numeric:tabular-nums;letter-spacing:-.01em;
}
.kpi-num span{font-size:15px;color:var(--text-3);margin-left:4px;font-weight:500;}
.kpi-label{margin-top:12px;font-size:14px;color:var(--text-2);}
.kpi-note{margin-top:6px;font-size:12px;color:var(--text-3);}

/* ---------- bento ---------- */
.bento{display:grid;grid-template-columns:repeat(6,1fr);gap:24px;}
.card{
  position:relative;background:var(--glass);border:1px solid var(--glass-line);
  border-radius:var(--r-card);padding:26px;backdrop-filter:blur(16px);-webkit-backdrop-filter:blur(16px);
  box-shadow:0 18px 50px rgba(3,8,20,.55),inset 0 1px 0 rgba(255,255,255,.06);
  transition:border-color .18s ease,transform .18s ease,box-shadow .18s ease;
  overflow:hidden;
}
.card:hover{border-color:rgba(46,107,255,.3);transform:translateY(-2px);box-shadow:0 24px 60px rgba(3,8,20,.62),inset 0 1px 0 rgba(255,255,255,.08);}
.bento-main{grid-column:span 3;grid-row:span 2;display:flex;flex-direction:column;border-color:rgba(46,107,255,.3);}
.bento-main img{width:100%;aspect-ratio:16/9;object-fit:cover;border-radius:14px;margin-bottom:22px;}
.bento-mid{grid-column:span 3;}
.bento-strip{grid-column:span 2;display:flex;gap:16px;align-items:flex-start;}
.bento-icon{
  width:40px;height:40px;flex:0 0 auto;border-radius:var(--r-ctl);
  border:1px solid var(--glass-line);background:rgba(46,107,255,.1);
  display:flex;align-items:center;justify-content:center;color:var(--primary);font-size:15px;font-weight:600;
  font-variant-numeric:tabular-nums;
}
.card p{margin-top:12px;font-size:14px;line-height:1.8;color:var(--text-2);}
.card h3{font-size:19px;}
.card .btn-text{margin-top:18px;}

/* ---------- compare ---------- */
.compare-wrap{
  border:1px solid var(--glass-line);border-radius:var(--r-card);
  background:var(--bg-1);overflow:hidden;
}
.compare{display:grid;grid-template-columns:1fr 1px 1fr;}
.compare-col{padding:32px 28px;}
.compare-col h3{font-size:18px;display:flex;align-items:center;gap:10px;}
.compare-col h3 .dot{width:7px;height:7px;border-radius:50%;}
.compare-divider{background:var(--line);}
.cmp-row{
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:14px 0;border-bottom:1px solid var(--line);font-size:14px;
}
.cmp-row:last-child{border-bottom:0;}
.cmp-row span{color:var(--text-3);}
.cmp-row b{font-weight:600;font-variant-numeric:tabular-nums;letter-spacing:-.01em;}
.cmp-row b.warn{color:var(--warn);}
.cmp-row b.ok{color:var(--ok);}
.compare-note{margin-top:16px;font-size:13px;color:var(--text-3);}

/* ---------- news ---------- */
.news-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:44px;flex-wrap:wrap;}
.news-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;}
.news-card{
  display:flex;flex-direction:column;background:var(--glass);border:1px solid var(--glass-line);
  border-radius:var(--r-card);overflow:hidden;backdrop-filter:blur(16px);-webkit-backdrop-filter:blur(16px);
  box-shadow:0 18px 50px rgba(3,8,20,.55),inset 0 1px 0 rgba(255,255,255,.06);
  transition:border-color .18s ease,transform .18s ease,box-shadow .18s ease;
}
.news-card:hover{border-color:rgba(46,107,255,.3);transform:translateY(-2px);box-shadow:0 24px 60px rgba(3,8,20,.62);}
.news-cover{display:block;position:relative;background:var(--bg-2);}
.news-cover img{width:100%;aspect-ratio:16/9;object-fit:cover;}
.news-body{padding:22px 24px 24px;display:flex;flex-direction:column;flex:1;}
.pill{
  align-self:flex-start;display:inline-flex;align-items:center;
  font-size:12px;color:var(--accent);border:1px solid rgba(255,179,71,.3);
  background:rgba(255,179,71,.07);padding:3px 10px;border-radius:var(--r-pill);
}
.news-title{margin-top:14px;font-size:18px;line-height:1.5;}
.news-title a{color:var(--text-1);transition:color .18s ease;}
.news-title a:hover{color:var(--accent);}
.news-desc{margin-top:10px;font-size:14px;color:var(--text-2);line-height:1.75;flex:1;}
.news-foot{
  margin-top:18px;padding-top:14px;border-top:1px solid var(--line);
  display:flex;align-items:center;justify-content:space-between;gap:12px;
  font-size:13px;color:var(--text-3);
}
.news-foot time{font-variant-numeric:tabular-nums;}
.empty-state{
  grid-column:1/-1;text-align:center;padding:56px 24px;border:1px dashed var(--glass-line);
  border-radius:var(--r-card);background:var(--bg-1);color:var(--text-2);font-size:15px;
}
.empty-state .btn{margin-top:18px;}

/* ---------- faq ---------- */
.faq-layout{display:grid;grid-template-columns:4fr 8fr;gap:48px;align-items:start;}
.faq-list{border-top:1px solid var(--line);}
.faq-item{border-bottom:1px solid var(--line);}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:20px;
  padding:22px 6px;text-align:left;font-size:17px;font-weight:500;color:var(--text-1);
  transition:color .18s ease,padding-left .18s ease;
  position:relative;
}
.faq-q::before{
  content:"";position:absolute;left:0;top:16px;bottom:16px;width:2px;
  background:var(--accent);opacity:0;transition:opacity .2s ease;
}
.faq-item.is-open .faq-q{padding-left:18px;color:#fff;}
.faq-item.is-open .faq-q::before{opacity:1;}
.faq-q:hover{color:#fff;}
.faq-mark{
  flex:0 0 auto;width:22px;height:22px;position:relative;border-radius:50%;
  border:1px solid var(--glass-line);
}
.faq-mark::before,.faq-mark::after{
  content:"";position:absolute;background:var(--text-2);transition:transform .25s ease,background .25s ease;
}
.faq-mark::before{left:5px;right:5px;top:10px;height:1.5px;}
.faq-mark::after{top:5px;bottom:5px;left:10px;width:1.5px;}
.faq-item.is-open .faq-mark::before{background:var(--accent);}
.faq-item.is-open .faq-mark::after{transform:scaleY(0);background:var(--accent);}
.faq-a{max-height:0;overflow:hidden;transition:max-height .32s ease;}
.faq-a p{padding:0 6px 24px 18px;font-size:15px;line-height:1.85;color:var(--text-2);max-width:640px;}

/* ---------- cta form ---------- */
.cta-grid{display:grid;grid-template-columns:5fr 7fr;gap:48px;align-items:start;}
.cta-points{margin-top:26px;display:flex;flex-direction:column;gap:14px;}
.cta-points li{display:flex;gap:12px;font-size:15px;color:var(--text-2);}
.cta-points i{
  flex:0 0 auto;width:18px;height:18px;margin-top:5px;border-radius:50%;
  border:1px solid rgba(47,211,168,.5);position:relative;
}
.cta-points i::after{
  content:"";position:absolute;left:5px;top:4px;width:5px;height:9px;
  border-right:1.5px solid var(--ok);border-bottom:1.5px solid var(--ok);transform:rotate(42deg);
}
.form-card{
  background:var(--glass);border:1px solid var(--glass-line);border-radius:var(--r-card);
  padding:30px;backdrop-filter:blur(16px);-webkit-backdrop-filter:blur(16px);
  box-shadow:0 18px 50px rgba(3,8,20,.55),inset 0 1px 0 rgba(255,255,255,.06);
}
.form-row{display:grid;grid-template-columns:1fr 1fr;gap:18px;}
.field{margin-bottom:18px;}
.field label{display:block;font-size:13px;color:var(--text-3);margin-bottom:8px;}
.field input,.field select,.field textarea{
  width:100%;background:rgba(6,10,20,.72);border:1px solid var(--glass-line);
  border-radius:var(--r-ctl);padding:12px 14px;color:var(--text-1);font-size:15px;
  transition:border-color .18s ease,box-shadow .18s ease;
}
.field input::placeholder,.field textarea::placeholder{color:var(--text-3);}
.field input:focus,.field select:focus,.field textarea:focus{
  outline:none;border-color:var(--primary);box-shadow:0 0 0 3px rgba(46,107,255,.22);
}
.field textarea{min-height:104px;resize:vertical;line-height:1.7;}
.form-card .btn{width:100%;margin-top:6px;}
.form-tip{margin-top:14px;font-size:12px;color:var(--text-3);text-align:center;}
.form-msg{margin-top:12px;font-size:13px;color:var(--ok);text-align:center;min-height:20px;}

/* ---------- footer ---------- */
.site-footer{border-top:1px solid var(--line);background:var(--bg-1);padding:72px 0 32px;position:relative;}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:40px;}
.footer-brand p{margin-top:16px;font-size:14px;color:var(--text-2);max-width:320px;line-height:1.8;}
.footer-tags{display:flex;flex-wrap:wrap;gap:10px;margin-top:18px;}
.footer-tags span{
  font-size:12px;color:var(--text-3);border:1px solid var(--glass-line);
  padding:4px 10px;border-radius:var(--r-pill);
}
.footer-col h4{margin:0 0 18px;font-size:15px;color:var(--text-1);font-weight:600;}
.footer-col li{margin-bottom:12px;font-size:14px;color:var(--text-2);}
.footer-col a{transition:color .18s ease;}
.footer-col a:hover{color:var(--accent);}
.footer-bottom{
  margin-top:48px;padding-top:24px;border-top:1px solid var(--line);
  display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:13px;color:var(--text-3);
}

/* ---------- to top ---------- */
.to-top{
  position:fixed;right:28px;bottom:28px;z-index:70;
  width:44px;height:44px;border-radius:50%;
  border:1px solid var(--glass-line);background:rgba(10,17,32,.86);
  color:var(--text-1);display:flex;align-items:center;justify-content:center;
  opacity:0;visibility:hidden;transform:translateY(8px);
  transition:opacity .22s ease,transform .22s ease,visibility .22s,border-color .18s ease;
  backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);
}
.to-top.is-on{opacity:1;visibility:visible;transform:translateY(0);}
.to-top:hover{border-color:rgba(255,179,71,.5);color:var(--accent);}

/* ---------- drawer ---------- */
.drawer{
  position:fixed;inset:0;z-index:80;background:rgba(6,10,20,.97);
  backdrop-filter:blur(18px);-webkit-backdrop-filter:blur(18px);
  display:none;flex-direction:column;padding:20px 24px 32px;
}
.drawer.is-open{display:flex;}
.drawer-top{display:flex;align-items:center;justify-content:space-between;height:56px;}
.drawer-close{width:44px;height:44px;border:1px solid var(--glass-line);border-radius:var(--r-ctl);color:var(--text-1);font-size:18px;}
.drawer-nav{margin-top:24px;display:flex;flex-direction:column;}
.drawer-nav a{
  display:flex;align-items:center;min-height:56px;border-bottom:1px solid var(--line);
  font-size:17px;color:var(--text-1);
}
.drawer-nav a.is-active{color:var(--accent);}
.drawer-foot{margin-top:auto;}

/* ---------- reveal ---------- */
.reveal{opacity:0;transform:translateY(8px);transition:opacity .3s ease,transform .3s ease;}
.reveal.is-in{opacity:1;transform:none;}

/* ---------- responsive ---------- */
@media (max-width:1024px){
  :root{--sec-pad:72px;}
  .nav-links{display:none;}
  .nav-toggle{display:inline-flex;}
  .nav-right .btn{display:none;}
  .hero{padding:128px 0 72px;}
  .hero-grid{grid-template-columns:1fr;gap:40px;}
  .hero-title{font-size:36px;}
  .bento{grid-template-columns:repeat(2,1fr);}
  .bento-main{grid-column:span 2;grid-row:auto;}
  .bento-mid,.bento-strip{grid-column:span 1;}
  .bento-strip{grid-column:span 2;}
  .news-grid{grid-template-columns:repeat(2,1fr);}
  .faq-layout{grid-template-columns:1fr;gap:32px;}
  .cta-grid{grid-template-columns:1fr;gap:32px;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
}
@media (max-width:768px){
  :root{--sec-pad:48px;}
  .container{padding:0 24px;}
  h1,.hero-title{font-size:30px;}
  h2{font-size:23px;}
  h3{font-size:18px;}
  .kpi-grid{grid-template-columns:repeat(2,1fr);gap:16px;}
  .kpi-num{font-size:30px;}
  .news-grid{grid-template-columns:1fr;}
  .compare{grid-template-columns:1fr;}
  .compare-divider{height:1px;width:auto;}
  .form-row{grid-template-columns:1fr;}
  .hero-metrics{grid-template-columns:1fr 1fr;}
  .hero-metric:last-child{grid-column:span 2;}
  .footer-bottom{flex-direction:column;align-items:flex-start;}
}
@media (max-width:520px){
  .container{padding:0 18px;}
  .hero{padding:112px 0 56px;}
  .hero-title{font-size:28px;}
  .bento{grid-template-columns:1fr;}
  .bento-main,.bento-mid,.bento-strip{grid-column:span 1;}
  .bento-strip{flex-direction:column;}
  .hero-actions{gap:12px;}
  .hero-actions .btn{width:100%;}
  .hero-metrics{grid-template-columns:1fr;}
  .hero-metric:last-child{grid-column:span 1;}
  .footer-grid{grid-template-columns:1fr;}
  .card,.form-card{padding:20px;}
  .to-top{right:18px;bottom:18px;}
}
@media (prefers-reduced-motion:reduce){
  *{animation:none!important;transition:none!important;}
  .reveal{opacity:1;transform:none;}
  html{scroll-behavior:auto;}
}

/* roulang page: article */
:root{
  --bg-0:#060A14;
  --bg-1:#0A1120;
  --bg-2:#101B2E;
  --glass:rgba(255,255,255,.045);
  --glass-line:rgba(150,185,255,.14);
  --primary:#2E6BFF;
  --primary-hover:#4B84FF;
  --primary-pressed:#1F55D8;
  --accent:#FFB347;
  --ok:#2FD3A8;
  --warn:#FF7A6B;
  --text-1:#EAF1FF;
  --text-2:#A9B8D6;
  --text-3:#6E7F9E;
  --line:rgba(140,175,255,.16);
  --radius-card:16px;
  --radius-sm:10px;
  --radius-pill:999px;
  --shadow-card:0 18px 50px rgba(3,8,20,.55);
  --shadow-card-hover:0 24px 60px rgba(3,8,20,.68);
  --container:1200px;
  --gutter:32px;
  --section-y:96px;
  --font-cn:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",system-ui,sans-serif;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:var(--font-cn);
  font-size:16px;
  line-height:1.75;
  color:var(--text-2);
  background-color:var(--bg-0);
  background-image:
    linear-gradient(rgba(140,175,255,.05) 1px,transparent 1px),
    linear-gradient(90deg,rgba(140,175,255,.05) 1px,transparent 1px);
  background-size:48px 48px;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border-radius:14px;}
a{color:inherit;text-decoration:none;}
button{font-family:inherit;}
h1,h2,h3,h4{color:var(--text-1);margin:0;font-weight:600;letter-spacing:.01em;}
p{margin:0;}
ul,ol{margin:0;padding:0;list-style:none;}
:focus-visible{outline:2px solid rgba(255,179,71,.75);outline-offset:2px;border-radius:6px;}
.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 var(--gutter);}

/* ---------- 导航 ---------- */
.site-header{position:fixed;top:0;left:0;right:0;z-index:60;transition:background .25s ease,border-color .25s ease,backdrop-filter .25s ease;}
.site-header.is-scrolled{background:rgba(6,10,20,.84);backdrop-filter:blur(16px);border-bottom:1px solid var(--line);}
.nav{display:flex;align-items:center;justify-content:space-between;height:72px;gap:24px;}
.logo{display:inline-flex;align-items:center;gap:10px;color:var(--text-1);font-size:17px;font-weight:600;letter-spacing:.01em;min-height:44px;}
.logo-mark{width:10px;height:10px;border-radius:3px;background:var(--primary);box-shadow:0 0 16px rgba(46,107,255,.85);flex:none;transform:rotate(45deg);}
.nav-links{display:flex;align-items:center;gap:34px;}
.nav-link{position:relative;display:inline-flex;align-items:center;gap:8px;height:72px;font-size:15px;color:var(--text-2);transition:color .18s ease;}
.nav-link::after{content:"";position:absolute;left:0;right:0;bottom:20px;height:2px;background:transparent;transition:background .18s ease;}
.nav-link::before{content:"";position:absolute;left:-12px;top:calc(50% - 2px);width:4px;height:4px;border-radius:50%;background:transparent;transition:background .18s ease;}
.nav-link:hover{color:var(--text-1);}
.nav-link.is-active{color:var(--text-1);}
.nav-link.is-active::after{background:var(--primary);}
.nav-link.is-active::before{background:var(--accent);}
.nav-right{display:flex;align-items:center;gap:14px;}
.nav-toggle{display:none;width:44px;height:44px;border:1px solid var(--glass-line);background:var(--glass);border-radius:var(--radius-sm);align-items:center;justify-content:center;cursor:pointer;}
.nav-toggle span{position:relative;width:18px;height:1.5px;background:var(--text-1);display:block;transition:background .2s ease;}
.nav-toggle span::before,.nav-toggle span::after{content:"";position:absolute;left:0;width:18px;height:1.5px;background:var(--text-1);transition:transform .2s ease;}
.nav-toggle span::before{top:-6px;}
.nav-toggle span::after{top:6px;}
.nav-toggle[aria-expanded="true"] span{background:transparent;}
.nav-toggle[aria-expanded="true"] span::before{transform:translateY(6px) rotate(45deg);}
.nav-toggle[aria-expanded="true"] span::after{transform:translateY(-6px) rotate(-45deg);}
.mobile-drawer{position:fixed;inset:0;z-index:80;background:rgba(6,10,20,.97);backdrop-filter:blur(18px);transform:translateX(100%);visibility:hidden;transition:transform .3s ease,visibility .3s ease;display:flex;flex-direction:column;}
.mobile-drawer.is-open{transform:translateX(0);visibility:visible;}
.drawer-inner{padding:96px var(--gutter) 40px;display:flex;flex-direction:column;height:100%;}
.drawer-link{display:flex;align-items:center;height:56px;font-size:16px;color:var(--text-2);border-bottom:1px solid var(--line);transition:color .18s ease,padding-left .18s ease;}
.drawer-link:hover{color:var(--text-1);padding-left:6px;}
.drawer-cta{margin-top:auto;justify-content:center;}

/* ---------- 按钮 ---------- */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;min-height:44px;padding:0 22px;border-radius:var(--radius-sm);font-size:15px;font-weight:500;border:1px solid transparent;cursor:pointer;transition:all .18s ease-out;white-space:nowrap;}
.btn-primary{background:var(--primary);color:#fff;box-shadow:0 8px 24px rgba(46,107,255,.35);}
.btn-primary:hover{background:var(--primary-hover);box-shadow:0 8px 30px rgba(46,107,255,.5);transform:translateY(-1px);}
.btn-primary:active{background:var(--primary-pressed);transform:translateY(0);}
.btn-ghost{background:transparent;border-color:var(--glass-line);color:var(--text-1);}
.btn-ghost:hover{border-color:rgba(255,179,71,.4);color:#fff;}
.btn-text{display:inline-flex;align-items:center;gap:8px;color:var(--primary);font-size:15px;font-weight:500;min-height:44px;}
.btn-text .arrow{transition:transform .18s ease-out;}
.btn-text:hover{color:var(--accent);}
.btn-text:hover .arrow{transform:translateX(3px);}

/* ---------- 标签 ---------- */
.badge{display:inline-flex;align-items:center;gap:6px;padding:3px 12px;border-radius:var(--radius-pill);font-size:12px;line-height:1.6;border:1px solid var(--glass-line);background:var(--glass);color:var(--text-2);}
.badge-accent{color:var(--accent);border-color:rgba(255,179,71,.32);background:rgba(255,179,71,.08);}
.tag{display:inline-flex;align-items:center;padding:5px 14px;border-radius:var(--radius-pill);font-size:13px;color:var(--text-2);border:1px solid var(--line);background:var(--glass);transition:all .18s ease;}
.tag:hover{border-color:rgba(46,107,255,.5);color:var(--text-1);}

/* ---------- 面包屑 ---------- */
.breadcrumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--text-3);margin-bottom:26px;}
.breadcrumb a{color:var(--text-2);transition:color .18s ease;}
.breadcrumb a:hover{color:var(--accent);}
.breadcrumb .sep{color:var(--text-3);opacity:.6;}
.breadcrumb .current{color:var(--text-3);max-width:420px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;}

/* ---------- 文章头部 ---------- */
.article-hero{position:relative;padding:150px 0 56px;border-bottom:1px solid var(--line);background-image:linear-gradient(180deg,rgba(6,10,20,.88),rgba(6,10,20,.97)),url('/assets/images/backpic/back-2.webp');background-size:cover;background-position:center;}
.article-hero::after{content:"";position:absolute;inset:0;pointer-events:none;background-image:linear-gradient(rgba(140,175,255,.05) 1px,transparent 1px);background-size:48px 48px;}
.article-head{position:relative;z-index:1;max-width:860px;}
.article-title{font-size:42px;line-height:1.25;margin:16px 0 20px;letter-spacing:.01em;}
.article-meta{display:flex;flex-wrap:wrap;align-items:center;gap:18px;font-size:13px;color:var(--text-3);}
.article-meta .meta-item{display:inline-flex;align-items:center;gap:6px;font-variant-numeric:tabular-nums;}
.article-meta .dot{width:4px;height:4px;border-radius:50%;background:var(--text-3);opacity:.6;}

/* ---------- 正文阅读区 ---------- */
.article-wrap{padding:var(--section-y) 0 0;}
.article-body{max-width:760px;margin:0 auto;}
.article-content{font-size:17px;line-height:1.9;color:var(--text-2);}
.article-content > *:first-child{margin-top:0;}
.article-content p{margin:0 0 22px;}
.article-content h2{font-size:28px;line-height:1.35;margin:48px 0 18px;padding-left:14px;position:relative;}
.article-content h2::before{content:"";position:absolute;left:0;top:.28em;width:3px;height:1em;background:var(--primary);border-radius:2px;}
.article-content h3{font-size:19px;line-height:1.5;margin:34px 0 14px;color:var(--text-1);}
.article-content ul,.article-content ol{margin:0 0 22px;padding-left:4px;}
.article-content li{position:relative;padding-left:20px;margin-bottom:10px;line-height:1.8;}
.article-content ul > li::before{content:"";position:absolute;left:2px;top:.72em;width:6px;height:6px;border-radius:2px;background:var(--primary);}
.article-content ol{counter-reset:item;}
.article-content ol > li{counter-increment:item;}
.article-content ol > li::before{content:counter(item);position:absolute;left:0;top:.1em;font-size:13px;font-weight:600;color:var(--accent);font-variant-numeric:tabular-nums;}
.article-content blockquote{margin:0 0 24px;padding:20px 22px;border-left:3px solid var(--accent);background:var(--glass);border:1px solid var(--glass-line);border-left-width:3px;border-left-color:var(--accent);border-radius:12px;color:var(--text-2);}
.article-content blockquote p:last-child{margin-bottom:0;}
.article-content img{margin:26px 0;border-radius:14px;}
.article-content figcaption,.article-content .caption{font-size:12px;color:var(--text-3);text-align:center;margin-top:-14px;margin-bottom:24px;}
.article-content a{color:var(--primary);text-decoration:underline;text-underline-offset:3px;transition:color .18s ease;}
.article-content a:hover{color:var(--accent);}
.article-content strong{color:var(--text-1);font-weight:600;}
.article-content hr{border:0;border-top:1px solid var(--line);margin:40px 0;}
.article-content table{width:100%;border-collapse:collapse;margin:0 0 26px;font-size:15px;border:1px solid var(--line);border-radius:12px;overflow:hidden;}
.article-content th{background:var(--bg-2);color:var(--text-1);text-align:left;font-weight:600;padding:12px 16px;border-bottom:1px solid var(--line);}
.article-content td{padding:12px 16px;border-bottom:1px solid var(--line);font-variant-numeric:tabular-nums;}
.article-content tr:last-child td{border-bottom:0;}
.article-content code{font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;font-size:14px;background:var(--bg-2);border:1px solid var(--line);border-radius:6px;padding:2px 6px;color:var(--text-1);}
.article-content pre{background:var(--bg-1);border:1px solid var(--line);border-radius:12px;padding:18px 20px;overflow-x:auto;margin:0 0 26px;}
.article-content pre code{background:transparent;border:0;padding:0;font-size:13.5px;line-height:1.7;}

/* ---------- 空态 ---------- */
.empty-state{max-width:760px;margin:0 auto;padding:56px 28px;text-align:center;border:1px solid var(--glass-line);background:var(--glass);border-radius:var(--radius-card);box-shadow:var(--shadow-card);}
.empty-state p{color:var(--text-2);margin-bottom:20px;}

/* ---------- 标签与相关 ---------- */
.article-foot{max-width:760px;margin:56px auto 0;}
.tag-row{display:flex;flex-wrap:wrap;gap:10px;padding-top:28px;border-top:1px solid var(--line);}
.related-block{padding-top:56px;}
.block-head{display:flex;align-items:flex-end;justify-content:space-between;gap:20px;margin-bottom:24px;}
.block-head h2{font-size:26px;}
.block-head p{font-size:14px;color:var(--text-3);margin-top:6px;}
.related-empty{border:1px dashed var(--line);border-radius:var(--radius-card);padding:44px 24px;text-align:center;background:var(--glass);}
.related-empty p{font-size:14px;color:var(--text-3);margin-bottom:16px;}

/* ---------- CTA ---------- */
.cta-section{padding:var(--section-y) 0;margin-top:var(--section-y);background:linear-gradient(180deg,rgba(10,17,32,.9),rgba(6,10,20,.98));border-top:1px solid var(--line);}
.cta-grid{display:grid;grid-template-columns:5fr 7fr;gap:56px;align-items:start;}
.cta-grid h2{font-size:32px;line-height:1.3;margin-bottom:16px;}
.cta-points{margin-top:26px;display:flex;flex-direction:column;gap:14px;}
.cta-points li{display:flex;gap:10px;align-items:flex-start;font-size:15px;color:var(--text-2);}
.check{flex:none;width:18px;height:18px;border-radius:50%;background:rgba(47,211,168,.14);border:1px solid rgba(47,211,168,.4);position:relative;margin-top:5px;}
.check::after{content:"";position:absolute;left:5px;top:5px;width:7px;height:4px;border-left:1.5px solid var(--ok);border-bottom:1.5px solid var(--ok);transform:rotate(-45deg);}
.form-card{background:var(--glass);border:1px solid var(--glass-line);border-radius:var(--radius-card);padding:28px;box-shadow:var(--shadow-card);backdrop-filter:blur(16px);}
.field{margin-bottom:18px;}
.field label{display:block;font-size:13px;color:var(--text-3);margin-bottom:8px;}
.field input,.field select,.field textarea{width:100%;min-height:46px;padding:11px 14px;font-size:15px;color:var(--text-1);background:rgba(6,10,20,.72);border:1px solid var(--glass-line);border-radius:var(--radius-sm);transition:border-color .18s ease,box-shadow .18s ease;font-family:inherit;}
.field textarea{min-height:104px;resize:vertical;line-height:1.7;}
.field input::placeholder,.field textarea::placeholder{color:var(--text-3);}
.field input:focus,.field select:focus,.field textarea:focus{outline:none;border-color:var(--primary);box-shadow:0 0 0 3px rgba(46,107,255,.22);}
.form-note{font-size:12px;color:var(--text-3);text-align:center;margin-top:14px;}
.form-msg{margin-top:14px;font-size:13px;color:var(--ok);text-align:center;display:none;}
.form-msg.is-visible{display:block;}

/* ---------- 返回顶部 ---------- */
.back-top{position:fixed;right:26px;bottom:26px;width:46px;height:46px;border-radius:50%;border:1px solid var(--glass-line);background:rgba(16,27,46,.9);backdrop-filter:blur(12px);display:flex;align-items:center;justify-content:center;color:var(--text-2);opacity:0;visibility:hidden;transition:opacity .25s ease,visibility .25s ease,color .18s ease,border-color .18s ease;z-index:50;cursor:pointer;}
.back-top.is-visible{opacity:1;visibility:visible;}
.back-top:hover{color:var(--accent);border-color:rgba(255,179,71,.45);}

/* ---------- 页脚 ---------- */
.site-footer{border-top:1px solid var(--line);background:var(--bg-1);padding:72px 0 0;}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:40px;}
.footer-brand p{font-size:14px;color:var(--text-3);margin:18px 0 20px;max-width:320px;}
.footer-tags{display:flex;flex-wrap:wrap;gap:8px;}
.footer-tags span{font-size:12px;color:var(--text-2);border:1px solid var(--line);border-radius:var(--radius-pill);padding:3px 12px;background:var(--glass);}
.footer-col h4{font-size:15px;margin-bottom:18px;color:var(--text-1);}
.footer-col ul{display:flex;flex-direction:column;gap:12px;}
.footer-col li,.footer-col a{font-size:14px;color:var(--text-3);transition:color .18s ease;}
.footer-col a:hover{color:var(--text-1);}
.footer-bottom{margin-top:56px;padding:22px 0;border-top:1px solid var(--line);display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;font-size:13px;color:var(--text-3);}

/* ---------- 动效 ---------- */
.reveal{opacity:0;transform:translateY(8px);transition:opacity .3s ease,transform .3s ease;}
.reveal.is-in{opacity:1;transform:none;}

/* ---------- 响应式 ---------- */
@media (max-width:1024px){
  :root{--gutter:24px;--section-y:72px;}
  .nav-links{display:none;}
  .nav-toggle{display:inline-flex;}
  .nav-right .btn-primary{display:none;}
  .article-title{font-size:34px;}
  .cta-grid{grid-template-columns:1fr;gap:36px;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
}
@media (max-width:768px){
  :root{--gutter:18px;--section-y:52px;}
  body{font-size:15.5px;}
  .article-hero{padding:120px 0 40px;}
  .article-title{font-size:28px;line-height:1.35;}
  .article-content{font-size:16px;line-height:1.85;}
  .article-content h2{font-size:22px;margin:36px 0 14px;}
  .article-content h3{font-size:18px;}
  .cta-grid h2{font-size:24px;}
  .block-head h2{font-size:22px;}
  .footer-grid{grid-template-columns:1fr;gap:28px;}
  .form-card{padding:22px 18px;}
  .back-top{right:16px;bottom:16px;}
}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{transition:none !important;animation:none !important;}
  .reveal{opacity:1;transform:none;}
  html{scroll-behavior:auto;}
}

/* roulang page: category1 */
:root{
  --bg-0:#060A14;
  --bg-1:#0A1120;
  --bg-2:#101B2E;
  --glass:rgba(255,255,255,.045);
  --glass-line:rgba(150,185,255,.14);
  --primary:#2E6BFF;
  --primary-hover:#4B84FF;
  --primary-pressed:#1F55D8;
  --accent:#FFB347;
  --ok:#2FD3A8;
  --warn:#FF7A6B;
  --text-1:#EAF1FF;
  --text-2:#A9B8D6;
  --text-3:#6E7F9E;
  --line:rgba(140,175,255,.16);
  --grid-line:rgba(140,175,255,.05);
  --radius-card:16px;
  --radius-sm:10px;
  --shadow-card:0 18px 50px rgba(3,8,20,.55);
  --shadow-card-hover:0 24px 60px rgba(3,8,20,.72);
  --container:1200px;
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  background:var(--bg-0);
  color:var(--text-2);
  font-family:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",system-ui,sans-serif;
  font-size:16px;
  line-height:1.75;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
ul,ol{list-style:none;margin:0;padding:0}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer}
h1,h2,h3,h4{margin:0;color:var(--text-1);font-weight:600;letter-spacing:.01em}
p{margin:0}
:focus-visible{outline:2px solid rgba(255,179,71,.75);outline-offset:2px;border-radius:6px}
::selection{background:rgba(46,107,255,.4);color:#fff}

.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 32px}
.section{padding:96px 0}
.section-sm{padding:56px 0}
.grid-bg{
  background-image:linear-gradient(to right,var(--grid-line) 1px,transparent 1px),
                   linear-gradient(to bottom,var(--grid-line) 1px,transparent 1px);
  background-size:48px 48px;
}

/* ---------- 顶部导航 ---------- */
.site-header{
  position:fixed;top:0;left:0;right:0;z-index:60;
  border-bottom:1px solid transparent;
  transition:background .25s ease,border-color .25s ease,backdrop-filter .25s ease;
}
.site-header.is-scrolled{
  background:rgba(6,10,20,.84);
  backdrop-filter:blur(14px);
  border-bottom-color:var(--line);
}
.nav{display:flex;align-items:center;justify-content:space-between;height:72px;gap:24px}
.logo{display:inline-flex;align-items:center;gap:10px;font-size:17px;font-weight:600;color:var(--text-1);letter-spacing:.01em}
.logo-mark{
  width:14px;height:14px;border-radius:4px;flex:0 0 auto;
  background:linear-gradient(135deg,var(--primary),var(--accent));
  box-shadow:0 0 16px rgba(46,107,255,.65);
}
.nav-links{display:flex;align-items:center;gap:34px}
.nav-link{
  position:relative;font-size:15px;color:var(--text-2);
  padding:6px 0;transition:color .18s ease;
}
.nav-link:hover{color:var(--text-1)}
.nav-link.is-active{color:var(--text-1)}
.nav-link.is-active::after{
  content:"";position:absolute;left:0;right:0;bottom:-2px;height:2px;
  background:var(--primary);border-radius:2px;
}
.nav-link.is-active::before{
  content:"";position:absolute;left:-12px;top:50%;width:4px;height:4px;
  margin-top:-2px;border-radius:50%;background:var(--accent);
}
.nav-right{display:flex;align-items:center;gap:14px}
.nav-toggle{
  display:none;width:44px;height:44px;align-items:center;justify-content:center;
  border:1px solid var(--glass-line);border-radius:var(--radius-sm);background:var(--glass);
}
.nav-toggle span{position:relative;width:18px;height:1.5px;background:var(--text-1);display:block;border-radius:2px}
.nav-toggle span::before,.nav-toggle span::after{
  content:"";position:absolute;left:0;width:18px;height:1.5px;background:var(--text-1);border-radius:2px;
}
.nav-toggle span::before{top:-6px}
.nav-toggle span::after{top:6px}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:44px;padding:0 22px;border-radius:var(--radius-sm);
  font-size:15px;font-weight:500;letter-spacing:.01em;
  transition:transform .18s ease,box-shadow .18s ease,background .18s ease,border-color .18s ease,color .18s ease;
}
.btn-primary{
  background:var(--primary);color:#fff;
  box-shadow:0 8px 24px rgba(46,107,255,.35),inset 0 1px 0 rgba(255,255,255,.14);
}
.btn-primary:hover{background:var(--primary-hover);transform:translateY(-1px);box-shadow:0 14px 30px rgba(46,107,255,.45),inset 0 1px 0 rgba(255,255,255,.16)}
.btn-primary:active{background:var(--primary-pressed);transform:translateY(0)}
.btn-ghost{
  background:transparent;border:1px solid var(--glass-line);color:var(--text-1);
}
.btn-ghost:hover{border-color:rgba(255,179,71,.4);color:#fff;transform:translateY(-1px)}
.btn-ghost:active{transform:translateY(0)}

/* ---------- 抽屉 ---------- */
.drawer{
  position:fixed;inset:0;z-index:70;background:rgba(6,10,20,.98);
  backdrop-filter:blur(18px);transform:translateY(-102%);
  transition:transform .32s cubic-bezier(.4,0,.2,1);
  display:flex;flex-direction:column;padding:20px 0 28px;
}
.drawer.is-open{transform:translateY(0)}
.drawer-top{display:flex;align-items:center;justify-content:space-between;height:56px}
.drawer-close{
  width:44px;height:44px;display:flex;align-items:center;justify-content:center;
  border:1px solid var(--glass-line);border-radius:var(--radius-sm);font-size:20px;color:var(--text-1);
}
.drawer-nav{margin-top:12px;flex:1}
.drawer-nav a{
  display:flex;align-items:center;height:56px;font-size:16px;color:var(--text-2);
  border-bottom:1px solid var(--line);
}
.drawer-nav a.is-active{color:var(--text-1)}
.drawer-nav a.is-active::before{
  content:"";width:4px;height:4px;border-radius:50%;background:var(--accent);margin-right:10px;
}
.drawer-foot{padding-top:20px}

/* ---------- 首屏 ---------- */
.page-hero{
  position:relative;overflow:hidden;background:var(--bg-1);
  padding:156px 0 76px;border-bottom:1px solid var(--line);
}
.page-hero-bg{position:absolute;inset:0;z-index:0}
.page-hero-bg img{width:100%;height:100%;object-fit:cover;opacity:.36}
.page-hero::after{
  content:"";position:absolute;inset:0;z-index:1;
  background:linear-gradient(180deg,rgba(6,10,20,.88) 0%,rgba(6,10,20,.97) 78%,var(--bg-0) 100%);
}
.page-hero-inner{position:relative;z-index:2}
.breadcrumb{display:flex;align-items:center;gap:10px;font-size:13px;color:var(--text-3);margin-bottom:22px;flex-wrap:wrap}
.breadcrumb a{color:var(--text-2);transition:color .18s ease}
.breadcrumb a:hover{color:var(--accent)}
.breadcrumb .sep{color:var(--text-3)}
.breadcrumb .current{color:var(--text-3)}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;font-size:12px;letter-spacing:.06em;
  color:var(--accent);border:1px solid rgba(255,179,71,.28);border-radius:999px;
  padding:5px 14px;background:rgba(255,179,71,.06);margin-bottom:20px;
}
.eyebrow::before{content:"";width:5px;height:5px;border-radius:50%;background:var(--accent)}
.page-hero h1{
  font-size:44px;line-height:1.25;letter-spacing:.01em;max-width:860px;
}
.page-hero-lead{
  margin-top:20px;font-size:17px;line-height:1.8;color:var(--text-2);max-width:700px;
}
.hero-chips{display:flex;flex-wrap:wrap;gap:10px;margin-top:28px}
.chip{
  display:inline-flex;align-items:center;gap:6px;font-size:13px;color:var(--text-2);
  border:1px solid var(--glass-line);background:var(--glass);border-radius:999px;padding:6px 14px;
}
.chip b{color:var(--text-1);font-weight:600;font-variant-numeric:tabular-nums}

/* ---------- 主线条 ---------- */
.lane-strip{
  display:grid;grid-template-columns:repeat(3,1fr);
  border:1px solid var(--glass-line);border-radius:var(--radius-card);
  background:var(--glass);backdrop-filter:blur(16px);
  box-shadow:var(--shadow-card),inset 0 1px 0 rgba(255,255,255,.06);
  overflow:hidden;
}
.lane{padding:28px;border-right:1px solid var(--line)}
.lane:last-child{border-right:0}
.lane-no{
  display:block;font-size:13px;font-weight:600;color:var(--accent);
  font-variant-numeric:tabular-nums;letter-spacing:.08em;margin-bottom:12px;
}
.lane h2{font-size:19px;line-height:1.5;margin-bottom:8px}
.lane p{font-size:14.5px;color:var(--text-2);line-height:1.75}

/* ---------- 索引布局 ---------- */
.index-layout{display:grid;grid-template-columns:250px 1fr;gap:56px;align-items:start}
.toc{position:sticky;top:104px}
.toc-title{
  font-size:12px;letter-spacing:.12em;color:var(--text-3);margin-bottom:14px;
}
.toc-list{border-top:1px solid var(--line)}
.toc-list a{
  display:flex;align-items:center;gap:10px;padding:12px 0;font-size:15px;color:var(--text-2);
  border-bottom:1px solid var(--line);transition:color .18s ease,padding-left .18s ease;
}
.toc-list a::before{content:"";width:4px;height:4px;border-radius:50%;background:var(--text-3);transition:background .18s ease}
.toc-list a:hover{color:var(--text-1);padding-left:4px}
.toc-list a:hover::before{background:var(--accent)}
.toc-note{
  margin-top:22px;padding:18px;border:1px solid var(--glass-line);border-radius:var(--radius-card);
  background:var(--glass);font-size:13.5px;line-height:1.75;color:var(--text-3);
}
.toc-note b{display:block;color:var(--text-1);font-size:14px;font-weight:600;margin-bottom:6px}

.entry-group{margin-bottom:56px;scroll-margin-top:110px}
.entry-group:last-child{margin-bottom:0}
.group-head{display:flex;align-items:baseline;gap:16px;flex-wrap:wrap;margin-bottom:8px}
.entry-group h2{font-size:28px;line-height:1.35}
.group-no{
  font-size:13px;font-weight:600;color:var(--accent);font-variant-numeric:tabular-nums;letter-spacing:.08em;
}
.group-lead{font-size:15px;color:var(--text-2);max-width:720px;margin-bottom:10px}

.entry-card{
  display:grid;grid-template-columns:200px 1fr;gap:26px;
  padding:24px 0;border-top:1px solid var(--line);
}
.entry-thumb{
  position:relative;overflow:hidden;border-radius:14px;
  border:1px solid var(--glass-line);background:var(--bg-2);
}
.entry-thumb img{
  width:100%;aspect-ratio:16/10;object-fit:cover;
  transition:transform .4s ease,opacity .3s ease;opacity:.9;
}
.entry-card:hover .entry-thumb img{transform:scale(1.04);opacity:1}
.entry-top{display:flex;align-items:center;gap:12px;margin-bottom:10px;flex-wrap:wrap}
.entry-no{
  font-size:12px;font-weight:600;color:var(--text-3);
  font-variant-numeric:tabular-nums;letter-spacing:.1em;
}
.badge{
  display:inline-flex;align-items:center;font-size:12px;color:var(--text-2);
  border:1px solid var(--glass-line);background:rgba(46,107,255,.1);
  border-radius:999px;padding:3px 11px;
}
.entry-card h3{font-size:19px;line-height:1.5;margin-bottom:10px}
.entry-card p{font-size:15px;line-height:1.8;color:var(--text-2);max-width:760px}
.entry-foot{
  display:flex;align-items:center;gap:18px;flex-wrap:wrap;
  margin-top:14px;font-size:13px;color:var(--text-3);
}
.entry-foot .dot{width:4px;height:4px;border-radius:50%;background:var(--text-3);display:inline-block;margin-right:8px;vertical-align:middle}

/* ---------- 步骤 ---------- */
.section-head{max-width:760px;margin-bottom:44px}
.section-head h2{font-size:30px;line-height:1.35;margin-bottom:14px}
.section-head p{font-size:16px;color:var(--text-2)}
.step-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
.step{
  padding:26px;border:1px solid var(--glass-line);border-radius:var(--radius-card);
  background:var(--glass);backdrop-filter:blur(16px);
  box-shadow:var(--shadow-card),inset 0 1px 0 rgba(255,255,255,.06);
  transition:transform .18s ease,border-color .18s ease,box-shadow .18s ease;
}
.step:hover{transform:translateY(-2px);border-color:rgba(46,107,255,.3);box-shadow:var(--shadow-card-hover)}
.step-no{
  display:block;font-size:26px;font-weight:600;color:var(--primary);
  font-variant-numeric:tabular-nums;letter-spacing:-.01em;margin-bottom:14px;
}
.step h3{font-size:17px;line-height:1.5;margin-bottom:8px}
.step p{font-size:14px;line-height:1.75;color:var(--text-2)}

/* ---------- CTA ---------- */
.cta-bar{
  display:flex;align-items:center;justify-content:space-between;gap:32px;
  padding:38px 40px;border-radius:var(--radius-card);
  border:1px solid rgba(46,107,255,.28);
  background:linear-gradient(120deg,rgba(46,107,255,.14),rgba(255,179,71,.06) 70%,rgba(255,255,255,.02));
  box-shadow:var(--shadow-card),inset 0 1px 0 rgba(255,255,255,.07);
}
.cta-bar h2{font-size:26px;line-height:1.4;margin-bottom:10px}
.cta-bar p{font-size:15px;color:var(--text-2);max-width:640px}
.cta-bar .btn{flex:0 0 auto}

/* ---------- 页脚 ---------- */
.site-footer{border-top:1px solid var(--line);background:var(--bg-1);padding:72px 0 32px;margin-top:0}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:44px}
.footer-brand .logo{margin-bottom:18px}
.footer-brand p{font-size:14px;line-height:1.8;color:var(--text-2);max-width:320px}
.footer-tags{display:flex;flex-wrap:wrap;gap:8px;margin-top:20px}
.footer-tags span{
  font-size:12px;color:var(--text-2);border:1px solid var(--glass-line);
  background:var(--glass);border-radius:999px;padding:4px 12px;
}
.footer-col h4{font-size:14px;color:var(--text-1);margin-bottom:18px;letter-spacing:.02em}
.footer-col li{font-size:14px;color:var(--text-2);line-height:2}
.footer-col a{transition:color .18s ease}
.footer-col a:hover{color:var(--accent)}
.footer-bottom{
  display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
  margin-top:48px;padding-top:24px;border-top:1px solid var(--line);
  font-size:13px;color:var(--text-3);
}

/* ---------- 返回顶部 ---------- */
.to-top{
  position:fixed;right:28px;bottom:28px;z-index:55;
  width:46px;height:46px;border-radius:50%;
  border:1px solid var(--glass-line);background:rgba(10,17,32,.9);
  backdrop-filter:blur(12px);color:var(--text-1);
  display:flex;align-items:center;justify-content:center;
  opacity:0;visibility:hidden;transform:translateY(10px);
  transition:opacity .25s ease,transform .25s ease,visibility .25s ease,border-color .18s ease;
}
.to-top.is-visible{opacity:1;visibility:visible;transform:translateY(0)}
.to-top:hover{border-color:rgba(255,179,71,.5)}

/* ---------- 入场动效 ---------- */
.reveal{opacity:0;transform:translateY(8px);transition:opacity .3s ease,transform .3s ease}
.reveal.is-in{opacity:1;transform:none}

/* ---------- 响应式 ---------- */
@media (max-width:1023px){
  .container{padding:0 24px}
  .nav-links{display:none}
  .nav-toggle{display:flex}
  .nav-right .btn-primary{display:none}
  .section{padding:72px 0}
  .page-hero{padding:132px 0 60px}
  .page-hero h1{font-size:34px}
  .index-layout{grid-template-columns:1fr;gap:36px}
  .toc{position:static;top:auto}
  .toc-title{display:none}
  .toc-list{border-top:0;display:flex;gap:10px;overflow-x:auto;padding-bottom:6px;scrollbar-width:thin}
  .toc-list li{flex:0 0 auto}
  .toc-list a{
    border:1px solid var(--glass-line);border-radius:999px;padding:8px 16px;
    font-size:14px;white-space:nowrap;background:var(--glass);
  }
  .toc-list a::before{display:none}
  .toc-list a:hover{padding-left:16px}
  .toc-note{display:none}
  .lane-strip{grid-template-columns:1fr}
  .lane{border-right:0;border-bottom:1px solid var(--line)}
  .lane:last-child{border-bottom:0}
  .step-grid{grid-template-columns:repeat(2,1fr)}
  .footer-grid{grid-template-columns:1fr 1fr;gap:36px}
}
@media (max-width:767px){
  .section{padding:56px 0}
  .page-hero{padding:118px 0 48px}
  .page-hero h1{font-size:29px}
  .page-hero-lead{font-size:15.5px}
  .entry-card{grid-template-columns:1fr;gap:16px}
  .entry-thumb img{aspect-ratio:16/9}
  .entry-group h2{font-size:23px}
  .section-head h2{font-size:23px}
  .section-head p{font-size:15px}
  .cta-bar{flex-direction:column;align-items:flex-start;padding:28px 24px}
  .cta-bar .btn{width:100%}
  .step-grid{grid-template-columns:1fr}
  .to-top{right:18px;bottom:18px}
}
@media (max-width:520px){
  .container{padding:0 18px}
  .page-hero h1{font-size:26px;line-height:1.35}
  .footer-grid{grid-template-columns:1fr}
  .footer-bottom{justify-content:flex-start}
}
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  .reveal{opacity:1;transform:none;transition:none}
  .btn:hover,.step:hover{transform:none}
}

/* roulang page: category2 */
:root{
  --bg-0:#060A14;
  --bg-1:#0A1120;
  --bg-2:#101B2E;
  --glass:rgba(255,255,255,.045);
  --glass-line:rgba(150,185,255,.14);
  --primary:#2E6BFF;
  --primary-hover:#4B84FF;
  --primary-pressed:#1F55D8;
  --accent:#FFB347;
  --ok:#2FD3A8;
  --warn:#FF7A6B;
  --text-1:#EAF1FF;
  --text-2:#A9B8D6;
  --text-3:#6E7F9E;
  --line:rgba(140,175,255,.16);
  --radius-card:16px;
  --radius-sm:10px;
  --radius-img:14px;
  --shadow-card:0 18px 50px rgba(3,8,20,.55);
  --shadow-hover:0 24px 60px rgba(3,8,20,.62);
  --container:1200px;
  --section-y:96px;
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  font-family:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",system-ui,sans-serif;
  background:var(--bg-0);
  color:var(--text-2);
  font-size:16px;
  line-height:1.75;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
h1,h2,h3,h4{color:var(--text-1);margin:0;letter-spacing:.01em;line-height:1.35;font-weight:600}
p{margin:0}
ul{margin:0;padding:0;list-style:none}
a{color:inherit;text-decoration:none}
img{max-width:100%;display:block}
button{font-family:inherit}
:focus-visible{outline:2px solid rgba(255,179,71,.75);outline-offset:2px;border-radius:4px}
.container{max-width:var(--container);margin:0 auto;padding:0 32px;width:100%}
.section{padding:var(--section-y) 0;position:relative}
.section--alt{background:var(--bg-1)}
.tex::after{
  content:"";position:absolute;inset:0;pointer-events:none;opacity:.05;
  background-image:linear-gradient(var(--line) 1px,transparent 1px),linear-gradient(90deg,var(--line) 1px,transparent 1px);
  background-size:48px 48px;
}
.section-head{max-width:720px;margin-bottom:40px}
.section-head h2{font-size:clamp(22px,2.4vw,30px);margin-bottom:14px}
.section-head p{color:var(--text-2);font-size:16px}
.eyebrow{display:inline-flex;align-items:center;gap:8px;font-size:12px;letter-spacing:.08em;color:var(--accent);text-transform:uppercase;margin-bottom:12px}
.eyebrow::before{content:"";width:18px;height:1px;background:var(--accent);display:inline-block}

/* 导航 */
.site-header{
  position:fixed;top:0;left:0;right:0;z-index:80;
  background:transparent;transition:background .22s ease,border-color .22s ease,backdrop-filter .22s ease;
  border-bottom:1px solid transparent;
}
.site-header.is-scrolled{
  background:rgba(6,10,20,.84);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  border-bottom:1px solid var(--line);
}
.nav{height:72px;display:flex;align-items:center;justify-content:space-between;gap:24px}
.logo{display:inline-flex;align-items:center;gap:10px;color:var(--text-1);font-size:17px;font-weight:600}
.logo-mark{
  width:10px;height:10px;border-radius:3px;flex:none;
  background:linear-gradient(135deg,var(--primary),var(--accent));
  box-shadow:0 0 12px rgba(46,107,255,.65);
}
.nav-links{display:flex;align-items:center;gap:30px}
.nav-link{position:relative;color:var(--text-2);font-size:15px;padding:8px 0;transition:color .18s ease}
.nav-link:hover{color:var(--text-1)}
.nav-link.is-active{color:var(--text-1);border-bottom:2px solid var(--primary);padding-bottom:6px}
.nav-link.is-active::before{
  content:"";position:absolute;left:-12px;top:50%;transform:translateY(-50%);
  width:4px;height:4px;border-radius:50%;background:var(--accent);
}
.nav-right{display:flex;align-items:center;gap:14px}
.nav-toggle{
  display:none;width:44px;height:44px;border-radius:var(--radius-sm);
  border:1px solid var(--glass-line);background:var(--glass);cursor:pointer;
  align-items:center;justify-content:center;
}
.nav-toggle span{display:block;width:18px;height:1.5px;background:var(--text-1);position:relative}
.nav-toggle span::before,.nav-toggle span::after{
  content:"";position:absolute;left:0;width:18px;height:1.5px;background:var(--text-1);
}
.nav-toggle span::before{top:-6px}
.nav-toggle span::after{top:6px}

/* 移动抽屉 */
.mobile-drawer{
  position:fixed;inset:72px 0 0;background:rgba(6,10,20,.98);
  backdrop-filter:blur(16px);z-index:70;padding:16px 18px 40px;
  transform:translateY(-12px);opacity:0;pointer-events:none;transition:opacity .22s ease,transform .22s ease;
  overflow-y:auto;
}
.mobile-drawer.is-open{opacity:1;transform:translateY(0);pointer-events:auto}
.drawer-link{
  display:flex;align-items:center;height:56px;border-bottom:1px solid var(--line);
  color:var(--text-2);font-size:16px;
}
.drawer-link.is-active{color:var(--text-1)}
.drawer-link.is-active::before{content:"";width:4px;height:4px;border-radius:50%;background:var(--accent);margin-right:10px}
.drawer-cta{margin-top:24px;width:100%}
body.is-locked{overflow:hidden}

/* 按钮 */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:44px;padding:0 22px;border-radius:var(--radius-sm);
  font-size:15px;font-weight:600;border:1px solid transparent;cursor:pointer;
  transition:background .18s ease,box-shadow .18s ease,transform .18s ease,border-color .18s ease,color .18s ease;
}
.btn-primary{background:var(--primary);color:#fff;box-shadow:0 8px 24px rgba(46,107,255,.35)}
.btn-primary:hover{background:var(--primary-hover);transform:translateY(-1px);box-shadow:0 10px 30px rgba(46,107,255,.48)}
.btn-primary:active{background:var(--primary-pressed);transform:translateY(0)}
.btn-secondary{background:transparent;border-color:var(--glass-line);color:var(--text-1)}
.btn-secondary:hover{border-color:rgba(255,179,71,.42);color:#fff;transform:translateY(-1px)}
.btn-ghost{background:none;color:var(--primary-hover);padding:0;min-height:44px}
.btn-ghost:hover{color:var(--accent)}
.btn-ghost .arrow{transition:transform .18s ease}
.btn-ghost:hover .arrow{transform:translateX(3px)}

/* 面包屑 */
.crumb{padding:104px 0 0}
.crumb-list{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--text-3)}
.crumb-list a{color:var(--text-3)}
.crumb-list a:hover{color:var(--text-1)}
.crumb-sep{color:var(--line)}

/* Hero */
.hero{position:relative;padding:24px 0 64px;overflow:hidden}
.hero-bg{
  position:absolute;inset:0;z-index:0;opacity:.3;
  background-image:url('/assets/images/backpic/back-2.webp');
  background-size:cover;background-position:center;
}
.hero-mask{
  position:absolute;inset:0;z-index:1;
  background:linear-gradient(180deg,rgba(6,10,20,.78) 0%,rgba(6,10,20,.94) 60%,var(--bg-0) 100%);
}
.hero-tex{
  position:absolute;inset:0;z-index:1;opacity:.05;pointer-events:none;
  background-image:linear-gradient(var(--line) 1px,transparent 1px),linear-gradient(90deg,var(--line) 1px,transparent 1px);
  background-size:48px 48px;
}
.hero-inner{position:relative;z-index:2;max-width:840px}
.hero h1{font-size:clamp(28px,4vw,46px);line-height:1.25;margin-bottom:18px}
.hero-lead{font-size:17px;color:var(--text-2);max-width:660px}
.hero-meta{display:flex;flex-wrap:wrap;gap:12px;margin-top:26px;font-size:13px;color:var(--text-3)}
.hero-meta span{display:inline-flex;align-items:center;gap:6px}
.hero-meta span::before{content:"";width:5px;height:5px;border-radius:50%;background:var(--ok);display:inline-block}

/* 筛选胶囊 */
.chip-row{display:flex;flex-wrap:wrap;gap:10px;margin-top:32px}
.chip{
  display:inline-flex;align-items:center;min-height:38px;padding:0 16px;border-radius:999px;
  border:1px solid var(--glass-line);background:var(--glass);color:var(--text-2);
  font-size:13px;transition:border-color .18s ease,color .18s ease,background .18s ease;
}
.chip:hover{color:var(--text-1);border-color:rgba(46,107,255,.42);background:rgba(46,107,255,.1)}

/* 卡片 */
.card{
  background:var(--glass);border:1px solid var(--glass-line);border-radius:var(--radius-card);
  box-shadow:var(--shadow-card);backdrop-filter:blur(16px);-webkit-backdrop-filter:blur(16px);
  box-shadow:inset 0 1px 0 rgba(255,255,255,.06),var(--shadow-card);
  transition:border-color .18s ease,transform .18s ease,box-shadow .18s ease;
  overflow:hidden;display:flex;flex-direction:column;
}
.card:hover{
  transform:translateY(-2px);border-color:rgba(46,107,255,.32);
  box-shadow:inset 0 1px 0 rgba(255,255,255,.08),var(--shadow-hover);
}
.card-media{position:relative;aspect-ratio:16/9;overflow:hidden;background:var(--bg-2)}
.card-media img{width:100%;height:100%;object-fit:cover;transition:transform .35s ease}
.card:hover .card-media img{transform:scale(1.03)}
.card-body{padding:24px 26px 26px;display:flex;flex-direction:column;gap:12px;flex:1}
.card-body h3{font-size:19px;line-height:1.5}
.card-body p{font-size:15px;color:var(--text-2);line-height:1.75;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.card-foot{margin-top:auto;display:flex;align-items:center;justify-content:space-between;gap:12px;
  padding-top:14px;border-top:1px solid var(--line);font-size:13px;color:var(--text-3)}
.card-foot .go{display:inline-flex;align-items:center;gap:6px;color:var(--primary-hover);font-size:14px;font-weight:600}
.card-foot .go .arrow{transition:transform .18s ease}
.card:hover .card-foot .go .arrow{transform:translateX(3px)}
.tag{
  display:inline-flex;align-items:center;height:26px;padding:0 12px;border-radius:999px;
  font-size:12px;color:var(--accent);background:rgba(255,179,71,.1);
  border:1px solid rgba(255,179,71,.24);
}
.tag--blue{color:var(--primary-hover);background:rgba(46,107,255,.12);border-color:rgba(46,107,255,.28)}

/* 矩阵 */
.matrix{display:grid;grid-template-columns:repeat(2,1fr);gap:24px}
.highlight-card{
  display:grid;grid-template-columns:1.15fr .85fr;gap:32px;align-items:center;
  margin:0 0 24px;padding:34px;border-radius:var(--radius-card);
  border:1px solid rgba(46,107,255,.32);
  background:linear-gradient(135deg,rgba(46,107,255,.12),rgba(16,27,46,.62));
  box-shadow:inset 0 1px 0 rgba(255,255,255,.07),var(--shadow-card);
}
.highlight-card h3{font-size:clamp(20px,2.2vw,26px);margin-bottom:14px}
.highlight-card p{color:var(--text-2);font-size:15px}
.highlight-list{display:flex;flex-wrap:wrap;gap:10px;margin-top:20px}
.highlight-list span{
  font-size:12px;padding:6px 12px;border-radius:999px;
  background:rgba(6,10,20,.55);border:1px solid var(--glass-line);color:var(--text-2);
}
.highlight-cta{display:flex;flex-direction:column;gap:14px;align-items:flex-start}
.highlight-stat{font-size:40px;font-weight:600;color:var(--text-1);font-variant-numeric:tabular-nums;line-height:1}
.highlight-stat small{display:block;font-size:13px;font-weight:400;color:var(--text-3);margin-top:8px}

/* 对照 */
.compare{
  display:grid;grid-template-columns:1fr 1fr;border:1px solid var(--glass-line);
  border-radius:var(--radius-card);overflow:hidden;background:var(--glass);
  box-shadow:inset 0 1px 0 rgba(255,255,255,.06),var(--shadow-card);
}
.compare-col{padding:28px}
.compare-col + .compare-col{border-left:1px solid var(--line)}
.compare-col h3{font-size:18px;margin-bottom:8px}
.compare-note{font-size:13px;color:var(--text-3);margin-bottom:16px}
.compare-list li{
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:12px 0;border-bottom:1px dashed var(--line);font-size:15px;
}
.compare-list li:last-child{border-bottom:0}
.cl-label{color:var(--text-2)}
.cl-val{font-weight:600;font-variant-numeric:tabular-nums;font-size:14px}
.cl-val.is-ok{color:var(--ok)}
.cl-val.is-warn{color:var(--warn)}

/* 流程 */
.flow{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
.flow-step{
  padding:26px 22px;border-radius:0 0 var(--radius-card) var(--radius-card);
  border-top:2px solid var(--primary);background:var(--glass);
  border-left:1px solid var(--glass-line);border-right:1px solid var(--glass-line);border-bottom:1px solid var(--glass-line);
  transition:transform .18s ease,border-color .18s ease;
}
.flow-step:hover{transform:translateY(-2px);border-color:rgba(46,107,255,.3)}
.flow-num{font-size:26px;font-weight:600;color:var(--accent);font-variant-numeric:tabular-nums;line-height:1;margin-bottom:14px}
.flow-step h3{font-size:17px;margin-bottom:10px}
.flow-step p{font-size:14px;color:var(--text-2)}

/* FAQ */
.faq-wrap{display:grid;grid-template-columns:4fr 8fr;gap:48px;align-items:start}
.faq-item{border-bottom:1px solid var(--line);transition:padding .2s ease}
.faq-item.is-open{border-left:2px solid var(--accent);padding-left:16px}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:16px;
  background:none;border:0;padding:20px 0;text-align:left;cursor:pointer;
  color:var(--text-1);font-size:17px;line-height:1.5;font-weight:600;
}
.faq-q .sign{
  flex:none;width:22px;height:22px;border-radius:50%;border:1px solid var(--glass-line);
  display:inline-flex;align-items:center;justify-content:center;color:var(--accent);
  font-size:14px;font-weight:400;transition:transform .2s ease;
}
.faq-item.is-open .faq-q .sign{transform:rotate(45deg)}
.faq-a{max-height:0;overflow:hidden;transition:max-height .3s ease;font-size:15px;color:var(--text-2)}
.faq-a p{padding:0 0 20px;max-width:640px}
.faq-item.is-open .faq-a{max-height:280px}

/* CTA */
.cta-band{
  display:grid;grid-template-columns:1fr 400px;gap:36px;align-items:center;
  padding:40px;border-radius:20px;border:1px solid var(--glass-line);
  background:linear-gradient(135deg,rgba(46,107,255,.16),rgba(16,27,46,.72));
  box-shadow:inset 0 1px 0 rgba(255,255,255,.07),var(--shadow-card);
}
.cta-band h2{font-size:clamp(22px,2.4vw,28px);margin-bottom:12px}
.cta-band p{font-size:15px;color:var(--text-2)}
.field{display:flex;gap:10px;margin-top:18px}
.input{
  flex:1;min-height:46px;padding:0 16px;border-radius:var(--radius-sm);
  background:rgba(6,10,20,.62);border:1px solid var(--glass-line);
  color:var(--text-1);font-size:15px;transition:border-color .18s ease,box-shadow .18s ease;
}
.input::placeholder{color:var(--text-3)}
.input:focus{outline:none;border-color:var(--primary);box-shadow:0 0 0 3px rgba(46,107,255,.25)}
.form-tip{font-size:12px;color:var(--text-3);margin-top:12px}
.form-msg{font-size:13px;color:var(--ok);margin-top:10px;min-height:20px}

/* 页脚 */
.site-footer{border-top:1px solid var(--line);background:var(--bg-1);padding:64px 0 28px;margin-top:0}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:36px}
.footer-brand p{font-size:14px;color:var(--text-2);margin:16px 0 18px;max-width:320px}
.footer-tags{display:flex;flex-wrap:wrap;gap:8px}
.footer-tags span{
  font-size:12px;padding:5px 11px;border-radius:999px;
  background:var(--glass);border:1px solid var(--glass-line);color:var(--text-3);
}
.footer-col h4{font-size:15px;margin-bottom:16px}
.footer-col ul li{font-size:14px;color:var(--text-2);padding:7px 0}
.footer-col ul li a{color:var(--text-2)}
.footer-col ul li a:hover{color:var(--text-1)}
.footer-bottom{
  display:flex;flex-wrap:wrap;justify-content:space-between;gap:12px;
  border-top:1px solid var(--line);margin-top:48px;padding-top:20px;
  font-size:13px;color:var(--text-3);
}

/* 返回顶部 */
.back-top{
  position:fixed;right:24px;bottom:28px;z-index:70;width:46px;height:46px;border-radius:50%;
  border:1px solid var(--glass-line);background:rgba(10,17,32,.85);backdrop-filter:blur(10px);
  color:var(--text-1);display:inline-flex;align-items:center;justify-content:center;
  cursor:pointer;opacity:0;pointer-events:none;transition:opacity .22s ease,transform .22s ease,border-color .18s ease;
}
.back-top.is-visible{opacity:1;pointer-events:auto}
.back-top:hover{border-color:rgba(255,179,71,.5);transform:translateY(-2px)}

/* 进入视口动效 */
.reveal{opacity:0;transform:translateY(8px);transition:opacity .3s ease,transform .3s ease}
.reveal.is-in{opacity:1;transform:none}
@media (prefers-reduced-motion:reduce){
  .reveal{opacity:1;transform:none;transition:none}
  html{scroll-behavior:auto}
  .card:hover,.flow-step:hover,.btn-primary:hover{transform:none}
}

/* 响应式 */
@media (max-width:1024px){
  .nav-links{display:none}
  .nav-toggle{display:inline-flex}
  .footer-grid{grid-template-columns:1fr 1fr}
  .faq-wrap{grid-template-columns:1fr;gap:28px}
  .matrix{grid-template-columns:1fr}
  .highlight-card{grid-template-columns:1fr;gap:24px}
  .flow{grid-template-columns:repeat(2,1fr)}
  .cta-band{grid-template-columns:1fr;gap:24px}
}
@media (max-width:768px){
  .container{padding:0 24px}
  .section{padding:72px 0}
  .hero{padding:16px 0 48px}
  .compare{grid-template-columns:1fr}
  .compare-col + .compare-col{border-left:0;border-top:1px solid var(--line)}
  .crumb{padding:92px 0 0}
}
@media (max-width:640px){
  .container{padding:0 18px}
  .section{padding:48px 0}
  body{font-size:15px}
  .hero h1{font-size:28px}
  .hero-lead{font-size:15px}
  .flow{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr}
  .footer-bottom{flex-direction:column}
  .field{flex-direction:column}
  .field .btn{width:100%}
  .cta-band{padding:26px}
  .back-top{right:16px;bottom:18px}
  .nav{height:64px}
  .mobile-drawer{inset:64px 0 0}
}