:root{
  --primary:#2980FE;
  --primary-dark:#1d66d6;
  --primary-soft:#eaf3ff;
  --bg:#ffffff;
  --bg-soft:#f6f9fd;
  --bg-blue:#f2f7ff;
  --text:#1f2a3d;
  --muted:#667085;
  --line:#e4eaf2;
  --card:#ffffff;
  --radius:22px;
  --shadow:0 18px 50px rgba(41,128,254,.10);
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Microsoft YaHei",Arial,sans-serif;background:var(--bg-soft);color:var(--text);line-height:1.7;font-size:16px;overflow-x:hidden}
a{color:inherit;text-decoration:none}
img{max-width:100%;height:auto;display:block}
.container{width:min(100% - 32px,1180px);margin:0 auto}
.container.narrow{width:min(100% - 32px,900px)}
.site-header{position:sticky;top:0;z-index:50;background:rgba(255,255,255,.92);backdrop-filter:blur(18px);border-bottom:1px solid var(--line)}
.header-inner{min-height:68px;display:flex;align-items:center;justify-content:space-between;gap:16px}
.logo{display:flex;align-items:center;gap:10px;font-weight:800;color:#152036;font-size:18px}
.logo img{width:36px;height:36px;border-radius:12px;box-shadow:0 8px 20px rgba(41,128,254,.18)}
.nav-toggle{width:42px;height:42px;border:1px solid var(--line);background:#fff;border-radius:14px;display:grid;place-content:center;gap:5px;cursor:pointer}
.nav-toggle span{display:block;width:18px;height:2px;border-radius:999px;background:var(--text)}
.site-nav{display:none;position:absolute;left:16px;right:16px;top:74px;padding:14px;background:#fff;border:1px solid var(--line);border-radius:20px;box-shadow:var(--shadow)}
.site-nav.open{display:grid;gap:8px}
.site-nav a{padding:10px 12px;border-radius:12px;color:#42526b;font-size:14px}
.site-nav a.active,.site-nav a:hover{background:var(--primary-soft);color:var(--primary)}
.gradient-bg{background:radial-gradient(circle at 20% 12%,rgba(41,128,254,.16),transparent 34%),linear-gradient(180deg,#fff 0%,#f2f7ff 100%)}
.product-hero{padding:46px 0 36px;position:relative;overflow:hidden}
.product-hero:after{content:"";position:absolute;right:-90px;top:80px;width:260px;height:260px;border-radius:50%;background:rgba(41,128,254,.10);filter:blur(8px)}
.hero-grid{position:relative;z-index:1;display:grid;gap:32px;align-items:center}
.eyebrow,.badge{display:inline-flex;align-items:center;gap:8px;background:var(--primary-soft);color:var(--primary);border:1px solid rgba(41,128,254,.14);border-radius:999px;padding:7px 12px;font-size:13px;font-weight:700}
h1{font-size:clamp(32px,7vw,62px);line-height:1.12;margin:16px 0 16px;letter-spacing:-.04em;color:#111827}
h2{font-size:clamp(26px,4.2vw,42px);line-height:1.2;margin:0 0 14px;letter-spacing:-.03em;color:#111827}
h3{line-height:1.3;margin:0 0 8px;color:#172033}
p{margin:0 0 14px;color:var(--muted)}
.hero-desc{font-size:18px;max-width:640px;color:#475467}
.hero-tags,.inline-tags{display:flex;flex-wrap:wrap;gap:10px;margin-top:18px}
.hero-tags span,.inline-tags span{background:#fff;border:1px solid var(--line);border-radius:999px;padding:8px 12px;color:#475467;font-size:13px;box-shadow:0 8px 22px rgba(31,42,61,.05)}
.download-btn{display:inline-flex;align-items:center;justify-content:center;min-height:48px;padding:13px 24px;border-radius:999px;background:var(--primary);color:#fff;font-weight:800;box-shadow:0 14px 34px rgba(41,128,254,.25);transition:.2s ease;border:0;cursor:pointer}
.download-btn:hover{transform:translateY(-2px);background:var(--primary-dark);color:#fff}
.hero-actions{display:flex;align-items:center;gap:14px;flex-wrap:wrap;margin-top:24px}
.text-link{display:inline-flex;align-items:center;color:var(--primary);font-weight:800;margin-top:10px}
.text-link:after{content:"→";margin-left:6px}
.app-visual{position:relative;min-height:360px;display:grid;place-items:center}
.phone-frame{width:min(82vw,360px);padding:16px;border-radius:34px;background:linear-gradient(160deg,#fff,#edf5ff);border:1px solid rgba(41,128,254,.16);box-shadow:0 30px 80px rgba(41,128,254,.18)}
.phone-frame img{border-radius:24px;background:#fff}
.float-card{position:absolute;background:rgba(255,255,255,.94);border:1px solid var(--line);box-shadow:0 18px 44px rgba(31,42,61,.10);border-radius:18px;padding:12px 14px;min-width:140px;color:#344054;font-size:13px}
.float-card strong{display:block;color:#111827;font-size:14px;margin-bottom:2px}
.float-card.one{left:0;top:22px}.float-card.two{right:0;top:120px}.float-card.three{left:10px;bottom:44px}.float-card.four{right:12px;bottom:8px}
.section{padding:58px 0}
.section-heading{display:flex;flex-direction:column;gap:6px;margin-bottom:24px;max-width:760px}
.section-heading.center{text-align:center;margin-left:auto;margin-right:auto;align-items:center}
.feature-shortcuts{background:#fff;border-bottom:1px solid var(--line)}
.shortcuts-grid{display:grid;grid-template-columns:1fr 1fr;gap:14px}
.shortcut-card,.feature-card,.category-card,.risk-card,.faq-item,.info-card,.step-card{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:18px;box-shadow:0 10px 28px rgba(31,42,61,.04)}
.shortcut-card{display:flex;flex-direction:column;gap:6px;min-height:156px}
.card-icon{width:38px;height:38px;border-radius:14px;background:var(--primary-soft);color:var(--primary);display:grid;place-items:center;font-weight:900;margin-bottom:4px}
.product-section{background:#fff}
.product-grid{display:grid;gap:28px;align-items:center}
.product-media{border-radius:28px;padding:18px;background:linear-gradient(160deg,#f8fbff,#eaf3ff);border:1px solid var(--line);box-shadow:var(--shadow)}
.product-media img{border-radius:22px;margin:auto;max-height:430px;object-fit:contain}
.check-list{display:grid;gap:10px;margin:18px 0;padding:0;list-style:none}
.check-list li{position:relative;padding-left:28px;color:#475467}
.check-list li:before{content:"";position:absolute;left:0;top:.45em;width:16px;height:16px;border-radius:50%;background:var(--primary-soft);border:4px solid #fff;box-shadow:0 0 0 1px rgba(41,128,254,.30)}
.cold-wallet-section{background:linear-gradient(180deg,#f6f9fd,#eef5ff)}
.swap-section{background:#fff}
.dapp-section{background:linear-gradient(180deg,#fff,#f6f9fd)}
.dapp-card-stack{display:grid;gap:14px}
.dapp-card-stack .info-card:nth-child(2){margin-left:18px}
.process-steps{display:grid;gap:14px;counter-reset:step}
.step-card{position:relative;padding-top:52px}
.step-card:before{counter-increment:step;content:counter(step);position:absolute;top:18px;left:18px;width:28px;height:28px;border-radius:10px;background:var(--primary);color:#fff;display:grid;place-items:center;font-weight:900}
.safety-panel{background:linear-gradient(135deg,#f4f8ff,#ffffff);border:1px solid var(--line);border-radius:30px;padding:22px;box-shadow:var(--shadow)}
.risk-grid,.category-grid,.feature-grid,.faq-grid,.info-grid{display:grid;gap:14px}
.risk-card{border-left:4px solid var(--primary)}
.category-card{min-height:160px;display:flex;flex-direction:column;justify-content:space-between}
.faq-item h3{font-size:17px}
.cta-section{padding:60px 0;background:linear-gradient(135deg,#eaf3ff,#ffffff)}
.cta-box{text-align:center;border:1px solid rgba(41,128,254,.16);background:rgba(255,255,255,.86);border-radius:32px;padding:34px 20px;box-shadow:var(--shadow)}
.subpage .page-hero{padding:50px 0 34px;background:radial-gradient(circle at 15% 20%,rgba(41,128,254,.13),transparent 30%),linear-gradient(180deg,#fff,#f2f7ff);border-bottom:1px solid var(--line)}
.compact-hero h1{font-size:clamp(31px,6vw,50px)}
.guide-layout{display:grid;gap:24px;align-items:start;padding:44px 0 60px}
.article-panel{background:#fff;border:1px solid var(--line);border-radius:28px;padding:22px;box-shadow:0 14px 34px rgba(31,42,61,.05)}
.article-panel h2{font-size:26px;margin-top:18px}
.article-panel h2:first-child{margin-top:0}
.side-panel{display:grid;gap:14px}
.note-box{background:var(--primary-soft);border:1px solid rgba(41,128,254,.18);border-radius:22px;padding:18px;color:#475467}
.notice-box{background:#fff;border:1px solid var(--line);border-left:4px solid var(--primary);border-radius:18px;padding:16px;color:#475467}
.page-list{padding-left:20px;color:#475467}
.page-list li{margin-bottom:8px}
.download-steps{display:grid;gap:14px;margin-top:24px}
.download-steps .step-card{padding-top:18px;padding-left:64px}
.download-steps .step-card:before{top:20px;left:20px}
.site-footer{background:#111827;color:#cbd5e1;padding:48px 0 22px}
.footer-grid{display:grid;gap:24px}
.footer-brand{font-size:20px;font-weight:900;color:#fff;margin-bottom:10px}
.site-footer h3{color:#fff;font-size:15px;margin-bottom:12px}
.site-footer a{display:block;color:#cbd5e1;margin:8px 0;font-size:14px}
.site-footer a:hover{color:#fff}
.site-footer p{color:#cbd5e1}
.footer-bottom{border-top:1px solid rgba(255,255,255,.12);margin-top:28px;padding-top:18px;display:flex;flex-direction:column;gap:8px;color:#94a3b8;font-size:13px}
@media (min-width:640px){
  .shortcuts-grid,.risk-grid,.category-grid,.feature-grid,.faq-grid,.info-grid{grid-template-columns:repeat(2,1fr)}
  .process-steps{grid-template-columns:repeat(2,1fr)}
  .article-panel{padding:30px}
}
@media (min-width:900px){
  .nav-toggle{display:none}
  .site-nav{position:static;display:flex;align-items:center;gap:4px;padding:0;background:transparent;border:0;border-radius:0;box-shadow:none}
  .site-nav a{font-size:14px;padding:9px 10px}
  .product-hero{padding:82px 0 54px}
  .hero-grid,.product-grid{grid-template-columns:1.05fr .95fr;gap:56px}
  .product-grid.reverse .product-media{order:-1}
  .shortcuts-grid{grid-template-columns:repeat(3,1fr)}
  .risk-grid{grid-template-columns:repeat(3,1fr)}
  .category-grid{grid-template-columns:repeat(4,1fr)}
  .feature-grid{grid-template-columns:repeat(4,1fr)}
  .faq-grid{grid-template-columns:repeat(2,1fr)}
  .process-steps{grid-template-columns:repeat(3,1fr)}
  .guide-layout{grid-template-columns:minmax(0,1fr) 320px;gap:30px}
  .footer-grid{grid-template-columns:1.5fr 1fr 1fr 1fr}
  .footer-bottom{flex-direction:row;justify-content:space-between;align-items:center}
}
@media (min-width:1100px){
  .site-nav a{padding:9px 13px}
  .shortcuts-grid{grid-template-columns:repeat(6,1fr)}
}