:root{
  --primary:#2980FE;
  --primary-weak:#EAF3FF;
  --primary-soft:#F3F8FF;
  --bg:#F7FAFD;
  --panel:#FFFFFF;
  --text:#1F2937;
  --muted:#667085;
  --line:#E5EAF0;
  --deep:#111827;
  --radius:24px;
  --shadow:0 16px 45px rgba(41,128,254,.10);
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang TC","Noto Sans TC","Microsoft JhengHei",Arial,sans-serif;
  color:var(--text);
  background:linear-gradient(180deg,#ffffff 0%,#f7fafd 42%,#ffffff 100%);
  line-height:1.72;
  overflow-x:hidden;
}
a{color:inherit;text-decoration:none}
img{max-width:100%;height:auto;display:block}
.container{width:min(1160px,calc(100% - 36px));margin:0 auto}
.section{padding:58px 0}
.section-title{font-size:clamp(28px,4vw,44px);line-height:1.16;margin:0 0 14px;color:var(--deep);letter-spacing:-.02em}
.section-lead{margin:0 0 28px;color:var(--muted);font-size:17px;max-width:760px}
.kicker,.badge{
  display:inline-flex;align-items:center;gap:8px;
  padding:7px 12px;border-radius:999px;
  color:var(--primary);background:var(--primary-weak);
  font-size:13px;font-weight:700;letter-spacing:.02em;
}
.site-header{
  position:sticky;top:0;z-index:50;
  background:rgba(255,255,255,.88);
  backdrop-filter:saturate(180%) blur(14px);
  border-bottom:1px solid rgba(229,234,240,.85);
}
.nav-shell{width:min(1180px,calc(100% - 28px));margin:0 auto;display:flex;align-items:center;justify-content:space-between;min-height:72px;gap:18px}
.brand{display:flex;align-items:center;gap:10px;font-weight:800;color:var(--deep);letter-spacing:.01em}
.brand img{width:38px;height:38px;border-radius:12px}
.site-nav{display:none;align-items:center;gap:6px;position:absolute;left:14px;right:14px;top:72px;padding:14px;background:#fff;border:1px solid var(--line);border-radius:20px;box-shadow:var(--shadow)}
.site-nav.is-open{display:grid}
.site-nav a{padding:10px 12px;border-radius:12px;color:#344054;font-size:15px;font-weight:650}
.site-nav a:hover{background:var(--primary-soft);color:var(--primary)}
.nav-toggle{width:44px;height:44px;border:1px solid var(--line);border-radius:14px;background:#fff;display:grid;place-items:center;padding:10px}
.nav-toggle span{display:block;width:20px;height:2px;background:#344054;margin:2px 0;border-radius:99px}
.download-btn{
  display:inline-flex;align-items:center;justify-content:center;
  min-height:48px;padding:0 24px;border-radius:999px;
  background:var(--primary);color:#fff;font-weight:800;
  box-shadow:0 12px 26px rgba(41,128,254,.23);
  transition:transform .2s ease,box-shadow .2s ease,background .2s ease;
  border:0;cursor:pointer;white-space:nowrap;
}
.download-btn:hover{transform:translateY(-2px);box-shadow:0 16px 30px rgba(41,128,254,.30);background:#1e70e6}
.web3-dashboard-hero{padding:48px 0 34px;background:radial-gradient(circle at top right,rgba(41,128,254,.15),transparent 34%),linear-gradient(180deg,#fff 0%,#f5f9ff 100%)}
.hero-grid{display:grid;grid-template-columns:1fr;gap:28px;align-items:center}
.hero-copy h1{font-size:clamp(38px,8vw,72px);line-height:1.02;letter-spacing:-.05em;margin:16px 0;color:var(--deep)}
.hero-copy p{font-size:18px;color:var(--muted);max-width:700px;margin:0 0 22px}
.hero-actions{display:flex;align-items:center;gap:14px;flex-wrap:wrap;margin:24px 0}
.security-tags{display:flex;gap:10px;flex-wrap:wrap}
.security-tags span{padding:8px 12px;border:1px solid var(--line);background:#fff;border-radius:999px;color:#475467;font-size:13px;font-weight:700}
.hero-console{position:relative;border:1px solid var(--line);border-radius:30px;background:rgba(255,255,255,.78);box-shadow:var(--shadow);padding:18px;overflow:hidden}
.hero-console:before{content:"";position:absolute;inset:-60px -70px auto auto;width:220px;height:220px;background:rgba(41,128,254,.12);border-radius:999px}
.phone-stage{position:relative;display:grid;place-items:center;min-height:360px}
.phone-stage img{max-height:430px;object-fit:contain;filter:drop-shadow(0 28px 50px rgba(16,24,40,.18))}
.status-stack{display:grid;gap:12px;grid-template-columns:1fr 1fr}
.status-card{background:#fff;border:1px solid var(--line);border-radius:18px;padding:14px;box-shadow:0 8px 22px rgba(16,24,40,.05)}
.status-card small{color:var(--primary);font-weight:800}
.status-card strong{display:block;margin-top:4px;color:var(--deep)}
.service-index{padding:34px 0 56px}
.service-grid,.category-grid{display:grid;grid-template-columns:1fr;gap:16px}
.service-card,.info-card,.risk-card,.faq-item,.step-card,.check-card{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:22px;box-shadow:0 10px 26px rgba(16,24,40,.04);
}
.service-card{position:relative;overflow:hidden}
.service-card:after{content:"";position:absolute;left:0;right:0;top:0;height:4px;background:var(--primary)}
.service-card h3,.info-card h3,.risk-card h3,.step-card h3,.check-card h3{margin:10px 0 8px;color:var(--deep);font-size:21px}
.service-card p,.info-card p,.risk-card p,.step-card p,.check-card p{margin:0;color:var(--muted)}
.inline-link{display:inline-flex;align-items:center;gap:8px;margin-top:14px;color:var(--primary);font-weight:800}
.module-card{
  border:1px solid var(--line);border-radius:30px;background:#fff;box-shadow:var(--shadow);
  padding:22px;overflow:hidden
}
.split{display:grid;grid-template-columns:1fr;gap:24px;align-items:center}
.split.reverse .visual{order:-1}
.visual{background:linear-gradient(135deg,#eef6ff,#ffffff);border:1px solid var(--line);border-radius:28px;padding:18px;display:grid;place-items:center;min-height:260px}
.visual img{max-height:360px;object-fit:contain}
.feature-list{display:grid;gap:12px;margin:20px 0 0;padding:0;list-style:none}
.feature-list li{display:flex;gap:10px;color:#465160}
.feature-list li:before{content:"";width:10px;height:10px;border-radius:999px;background:var(--primary);flex:0 0 10px;margin-top:10px}
.digital-assets-hub,.web3-ecosystem-section,.hardware-wallet-section,.swap-service-section,.privacy-boundary-section,.submit-chain-section,.developer-center-section{padding:54px 0}
.hardware-wallet-section,.privacy-boundary-section{background:var(--primary-soft)}
.safety-panel{display:grid;grid-template-columns:1fr;gap:16px}
.boundary-tags{display:flex;flex-wrap:wrap;gap:10px;margin-top:18px}
.boundary-tags span{border:1px solid #cfe2ff;background:#fff;color:var(--primary);padding:8px 12px;border-radius:999px;font-weight:800;font-size:13px}
.submit-panel{display:grid;grid-template-columns:1fr;gap:18px}
.submit-list{display:grid;gap:12px}
.submit-list div{border:1px dashed #bcd7ff;background:#fbfdff;border-radius:18px;padding:16px}
.code-panel{background:#111827;color:#e5e7eb;border-radius:24px;padding:20px;overflow:hidden}
.code-panel pre{margin:0;white-space:pre-wrap;font:14px/1.8 ui-monospace,SFMono-Regular,Menlo,Consolas,monospace}
.doc-tiles{display:grid;grid-template-columns:1fr;gap:14px;margin-top:18px}
.process-steps{display:grid;grid-template-columns:1fr;gap:16px;counter-reset:step}
.step-card{position:relative;padding-top:26px}
.step-no{display:inline-grid;place-items:center;width:34px;height:34px;border-radius:12px;background:var(--primary);color:#fff;font-weight:900}
.risk-grid{display:grid;grid-template-columns:1fr;gap:16px}
.risk-card{border-left:5px solid var(--primary)}
.risk-card b{display:block;color:#344054;margin-top:8px}
.faq-list{display:grid;gap:14px}
.faq-item h3{margin:0 0 8px;color:var(--deep);font-size:19px}
.faq-item p{margin:0;color:var(--muted)}
.cta-section{padding:60px 0;background:linear-gradient(135deg,#eff6ff,#ffffff)}
.cta-box{text-align:center;border:1px solid var(--line);border-radius:30px;background:#fff;padding:34px;box-shadow:var(--shadow)}
.cta-box p{color:var(--muted);max-width:650px;margin:0 auto 22px}
.page-hero{padding:54px 0 24px;background:linear-gradient(180deg,#fff,#f4f8ff)}
.page-hero h1{font-size:clamp(32px,5vw,56px);line-height:1.1;letter-spacing:-.04em;margin:14px 0;color:var(--deep)}
.page-hero p{font-size:18px;color:var(--muted);max-width:820px;margin:0}
.content-layout{display:grid;grid-template-columns:1fr;gap:24px;padding:34px 0 64px}
.article-card{background:#fff;border:1px solid var(--line);border-radius:30px;padding:26px;box-shadow:var(--shadow)}
.article-card h2{margin:24px 0 10px;color:var(--deep);font-size:28px}
.article-card p{color:#4b5563;margin:0 0 14px}
.article-card ul,.article-card ol{padding-left:20px;color:#4b5563}
.side-panel{display:grid;gap:16px;align-content:start}
.checklist{display:grid;gap:12px;margin:20px 0}
.checklist li{list-style:none;border:1px solid var(--line);background:var(--primary-soft);padding:14px;border-radius:16px;color:#475467}
.download-zone{margin-top:24px;padding-top:24px;border-top:1px solid var(--line)}
.download-steps{display:grid;grid-template-columns:1fr;gap:16px}
.site-footer{background:#101828;color:#d0d5dd;padding:44px 0 22px}
.footer-grid{display:grid;grid-template-columns:1fr;gap:24px}
.footer-brand{display:flex;align-items:center;gap:10px;color:#fff;margin-bottom:12px}
.footer-brand img{width:34px;height:34px;border-radius:10px}
.site-footer h3{color:#fff;margin:0 0 12px}
.site-footer a{display:block;color:#d0d5dd;margin:8px 0}
.site-footer a:hover{color:#fff}
.footer-bottom{display:flex;justify-content:space-between;gap:14px;flex-wrap:wrap;border-top:1px solid rgba(255,255,255,.12);margin-top:28px;padding-top:18px;color:#98a2b3;font-size:14px}
@media (min-width:700px){
  .service-grid{grid-template-columns:repeat(2,1fr)}
  .category-grid{grid-template-columns:repeat(2,1fr)}
  .risk-grid{grid-template-columns:repeat(2,1fr)}
  .process-steps{grid-template-columns:repeat(2,1fr)}
  .doc-tiles{grid-template-columns:repeat(2,1fr)}
  .download-steps{grid-template-columns:repeat(2,1fr)}
}
@media (min-width:980px){
  .nav-toggle{display:none}
  .site-nav{display:flex;position:static;padding:0;background:transparent;border:0;box-shadow:none}
  .hero-grid{grid-template-columns:minmax(0,1fr) 520px;gap:42px}
  .web3-dashboard-hero{padding:74px 0 52px}
  .service-grid{grid-template-columns:repeat(4,1fr)}
  .service-grid .wide{grid-column:span 2}
  .split{grid-template-columns:1.04fr .96fr;gap:36px}
  .split.reverse .visual{order:initial}
  .safety-panel{grid-template-columns:1.2fr .8fr}
  .submit-panel{grid-template-columns:.9fr 1.1fr}
  .content-layout{grid-template-columns:minmax(0,760px) 1fr}
  .risk-grid{grid-template-columns:repeat(3,1fr)}
  .process-steps{grid-template-columns:repeat(3,1fr)}
  .footer-grid{grid-template-columns:1.4fr .7fr .7fr}
}
@media (max-width:420px){
  .container{width:min(100% - 26px,1160px)}
  .hero-actions{align-items:stretch}
  .download-btn{width:100%}
  .status-stack{grid-template-columns:1fr}
  .module-card,.article-card,.cta-box{border-radius:22px;padding:20px}
}