:root{
  --primary:#2980FE;
  --primary-dark:#1768d6;
  --primary-soft:#EEF6FF;
  --blue-gray:#F5F8FC;
  --white:#ffffff;
  --gray-50:#FAFBFD;
  --gray-100:#EEF1F5;
  --gray-200:#DDE4EC;
  --gray-500:#697586;
  --gray-700:#364152;
  --gray-900:#111827;
  --shadow:0 16px 45px rgba(17,24,39,.08);
  --shadow-soft:0 10px 28px rgba(41,128,254,.10);
  --radius:22px;
  --radius-sm:16px;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei",Arial,sans-serif;background:var(--white);color:var(--gray-900);line-height:1.75;overflow-x:hidden}
a{color:inherit;text-decoration:none}
img{max-width:100%;height:auto;display:block}
.container{width:min(1120px,calc(100% - 32px));margin:0 auto}
.site-header{position:sticky;top:0;z-index:50;background:rgba(255,255,255,.92);backdrop-filter:blur(16px);border-bottom:1px solid var(--gray-100)}
.header-inner{min-height:68px;display:flex;align-items:center;justify-content:space-between;gap:16px}
.brand{display:flex;align-items:center;gap:10px;font-weight:800;color:var(--gray-900)}
.brand-logo{width:38px;height:38px;object-fit:contain;border-radius:12px}
.brand-text{letter-spacing:.2px}
.nav-toggle{display:flex;flex-direction:column;gap:5px;width:44px;height:44px;border:1px solid var(--gray-200);border-radius:14px;background:#fff;align-items:center;justify-content:center}
.nav-toggle span{width:20px;height:2px;background:var(--gray-700);border-radius:4px}
.site-nav{position:absolute;left:16px;right:16px;top:72px;display:none;flex-direction:column;gap:6px;padding:14px;background:#fff;border:1px solid var(--gray-100);border-radius:20px;box-shadow:var(--shadow)}
.site-nav.is-open{display:flex}
.site-nav a{padding:10px 12px;border-radius:12px;color:var(--gray-700);font-size:15px}
.site-nav a:hover,.site-nav a.active{color:var(--primary);background:var(--primary-soft)}
main{background:linear-gradient(180deg,#fff 0%,#fff 35%,#f7faff 100%)}
.section{padding:66px 0}
.section.compact{padding:46px 0}
.section-title{max-width:720px;margin:0 auto 30px;text-align:center}
.eyebrow,.badge{display:inline-flex;align-items:center;gap:6px;padding:6px 11px;border-radius:999px;background:var(--primary-soft);color:var(--primary);font-size:13px;font-weight:700;margin-bottom:12px}
h1,h2,h3{line-height:1.25;margin:0 0 14px;color:var(--gray-900)}
h1{font-size:clamp(32px,8vw,58px);letter-spacing:-1.4px}
h2{font-size:clamp(26px,5vw,40px);letter-spacing:-.7px}
h3{font-size:20px}
p{margin:0 0 14px;color:var(--gray-500)}
.lead{font-size:18px;color:var(--gray-700)}
.muted{color:var(--gray-500);font-size:14px}
.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 16px 34px rgba(41,128,254,.25);transition:.2s ease;white-space:nowrap}
.download-btn:hover{transform:translateY(-1px);background:var(--primary-dark)}
.link-more{display:inline-flex;color:var(--primary);font-weight:700;margin-top:6px}
.product-hero{position:relative;padding:70px 0 44px;overflow:hidden;background:radial-gradient(circle at 78% 18%,rgba(41,128,254,.18),transparent 30%),linear-gradient(135deg,#ffffff 0%,#f4f8ff 100%)}
.product-hero:before{content:"";position:absolute;inset:auto -110px -120px auto;width:360px;height:360px;background:rgba(41,128,254,.12);border-radius:50%;filter:blur(8px)}
.hero-grid{position:relative;display:grid;gap:34px;align-items:center}
.hero-tags,.inline-tags{display:flex;flex-wrap:wrap;gap:10px;margin:22px 0 26px}
.hero-tags span,.inline-tags span{display:inline-flex;padding:7px 12px;border-radius:999px;background:#fff;border:1px solid var(--gray-100);color:var(--gray-700);font-size:13px;box-shadow:0 8px 22px rgba(17,24,39,.04)}
.hero-visual{position:relative;min-height:390px;display:grid;place-items:center}
.phone-stage{position:relative;width:min(360px,90%);padding:22px;border-radius:34px;background:rgba(255,255,255,.74);border:1px solid rgba(255,255,255,.88);box-shadow:var(--shadow)}
.phone-stage img{border-radius:26px;margin:auto;max-height:520px;object-fit:contain}
.float-card{position:absolute;background:#fff;border:1px solid var(--gray-100);border-radius:18px;padding:12px 14px;box-shadow:var(--shadow-soft);font-size:13px;color:var(--gray-700)}
.float-card strong{display:block;color:var(--gray-900);font-size:15px}.float-asset{left:0;top:30px}.float-cold{right:0;top:76px}.float-swap{left:10px;bottom:66px}.float-dapp{right:8px;bottom:20px}
.feature-shortcuts{display:grid;grid-template-columns:1fr;gap:14px;margin-top:-24px;position:relative;z-index:3}
.shortcut-card,.feature-card,.risk-card,.category-card,.faq-item,.info-card,.step-card{background:#fff;border:1px solid var(--gray-100);border-radius:var(--radius-sm);box-shadow:0 10px 26px rgba(17,24,39,.04)}
.shortcut-card{padding:18px;display:grid;gap:8px}.shortcut-card b{color:var(--gray-900)}.shortcut-card small{width:34px;height:34px;display:grid;place-items:center;background:var(--primary-soft);color:var(--primary);border-radius:12px;font-weight:900}.shortcut-card p{font-size:14px;margin:0}.shortcut-card a{color:var(--primary);font-weight:700;font-size:14px}
.product-section{padding:66px 0}.product-split{display:grid;gap:28px;align-items:center}.product-split.reverse .visual-box{order:0}.visual-box{position:relative;border-radius:30px;background:linear-gradient(145deg,#f7fbff,#fff);border:1px solid var(--gray-100);padding:24px;box-shadow:var(--shadow);overflow:hidden}.visual-box:after{content:"";position:absolute;width:180px;height:180px;background:rgba(41,128,254,.11);border-radius:50%;right:-60px;bottom:-60px}.visual-box img{position:relative;z-index:2;margin:auto;max-height:430px;object-fit:contain}.content-box{padding:2px}.feature-list{display:grid;gap:10px;margin:18px 0}.feature-list li{list-style:none;position:relative;padding-left:26px;color:var(--gray-700)}.feature-list li:before{content:"";position:absolute;left:0;top:9px;width:10px;height:10px;border-radius:50%;background:var(--primary);box-shadow:0 0 0 5px var(--primary-soft)}
.cold-wallet-section,.dapp-section{background:linear-gradient(180deg,#f6f9ff 0%,#ffffff 100%)}
.swap-section{background:#fff}.panel-grid{display:grid;gap:18px}.feature-card{padding:22px}.feature-card .icon{width:40px;height:40px;border-radius:14px;background:var(--primary-soft);color:var(--primary);display:grid;place-items:center;font-weight:900;margin-bottom:12px}.feature-card p{font-size:14px}
.process-steps{display:grid;gap:16px;counter-reset:steps}.step-card{padding:20px;position:relative;overflow:hidden}.step-num{width:38px;height:38px;display:grid;place-items:center;border-radius:14px;background:var(--primary);color:#fff;font-weight:900;margin-bottom:12px}.step-card:after{content:"";position:absolute;right:-26px;top:-26px;width:92px;height:92px;border-radius:50%;background:var(--primary-soft)}
.risk-grid{display:grid;gap:16px}.risk-card{padding:20px;border-left:4px solid var(--primary)}.risk-card b{display:block;margin-bottom:6px;color:var(--gray-900)}.risk-card p{font-size:14px;margin-bottom:8px}.risk-card span{display:block;color:var(--gray-700);font-size:14px}.risk-card a{display:inline-flex;margin-top:8px;color:var(--primary);font-weight:700;font-size:14px}
.category-grid{display:grid;gap:16px}.category-card{padding:22px;min-height:178px;display:flex;flex-direction:column;justify-content:space-between}.category-card p{font-size:14px}.category-card a{color:var(--primary);font-weight:700}.faq-list{display:grid;gap:14px;max-width:880px;margin:0 auto}.faq-item{padding:20px}.faq-item h3{font-size:18px}.cta-section{padding:64px 0;background:linear-gradient(135deg,#eef6ff,#ffffff)}.cta-card{text-align:center;background:#fff;border:1px solid var(--gray-100);border-radius:30px;padding:34px 22px;box-shadow:var(--shadow)}.cta-card p{max-width:680px;margin:0 auto 22px}
.page-hero{padding:58px 0 34px;background:radial-gradient(circle at 80% 10%,rgba(41,128,254,.13),transparent 28%),linear-gradient(135deg,#fff,#f5f9ff)}.page-hero-inner{max-width:860px}.page-hero h1{font-size:clamp(30px,7vw,48px)}.content-layout{display:grid;gap:24px;align-items:start}.article-card{background:#fff;border:1px solid var(--gray-100);border-radius:26px;padding:24px;box-shadow:var(--shadow)}.article-card h2{font-size:25px}.guide-list,.check-list{display:grid;gap:12px;margin:18px 0;padding:0}.guide-list li,.check-list li{list-style:none;background:var(--blue-gray);border:1px solid var(--gray-100);border-radius:16px;padding:14px;color:var(--gray-700)}.guide-list strong,.check-list strong{display:block;color:var(--gray-900);margin-bottom:4px}.side-panel{background:#fff;border:1px solid var(--gray-100);border-radius:24px;padding:20px;box-shadow:0 10px 25px rgba(17,24,39,.04)}.side-panel h3{font-size:18px}.side-panel a{display:block;padding:10px 0;border-top:1px solid var(--gray-100);color:var(--primary);font-weight:700}.notice{padding:16px 18px;border-radius:18px;background:var(--primary-soft);border:1px solid rgba(41,128,254,.16);color:var(--gray-700);margin:18px 0}.download-wrap{margin-top:24px}.download-page-grid{display:grid;gap:20px}.download-panel{padding:24px;background:#fff;border:1px solid var(--gray-100);border-radius:26px;box-shadow:var(--shadow)}
.site-footer{background:#111827;color:#d7dde7;padding:46px 0 22px}.site-footer p{color:#b8c0cc}.footer-grid{display:grid;gap:26px}.footer-brand{display:flex;gap:10px;align-items:center;margin-bottom:12px}.footer-brand img{width:34px;height:34px;border-radius:10px}.site-footer h3{font-size:16px;color:#fff}.site-footer a{display:block;color:#cbd5e1;padding:4px 0;font-size:14px}.site-footer a:hover{color:#fff}.footer-bottom{border-top:1px solid rgba(255,255,255,.12);margin-top:26px;padding-top:18px;display:flex;flex-direction:column;gap:8px;color:#9aa4b2;font-size:13px}
@media (min-width:640px){.feature-shortcuts{grid-template-columns:repeat(2,1fr)}.risk-grid,.category-grid,.process-steps,.panel-grid{grid-template-columns:repeat(2,1fr)}.download-page-grid{grid-template-columns:1fr 1fr}.article-card{padding:30px}}
@media (min-width:880px){.nav-toggle{display:none}.site-nav{position:static;display:flex;flex-direction:row;align-items:center;gap:2px;padding:0;background:transparent;border:0;border-radius:0;box-shadow:none}.site-nav a{font-size:14px}.hero-grid{grid-template-columns:1.02fr .98fr}.feature-shortcuts{grid-template-columns:repeat(3,1fr)}.product-split{grid-template-columns:1fr 1fr;gap:48px}.product-split.reverse .visual-box{order:2}.panel-grid{grid-template-columns:repeat(4,1fr)}.process-steps{grid-template-columns:repeat(3,1fr)}.risk-grid{grid-template-columns:repeat(4,1fr)}.category-grid{grid-template-columns:repeat(4,1fr)}.content-layout{grid-template-columns:minmax(0,1fr) 310px}.footer-grid{grid-template-columns:2fr 1fr 1fr 1fr}.footer-bottom{flex-direction:row;justify-content:space-between}.section{padding:84px 0}.product-hero{padding:88px 0 56px}}
@media (min-width:1120px){.feature-shortcuts{grid-template-columns:repeat(6,1fr)}.process-steps{grid-template-columns:repeat(6,1fr)}}
@media (max-width:420px){.container{width:min(100% - 24px,1120px)}.product-hero{padding-top:44px}.hero-visual{min-height:330px}.float-card{font-size:12px;padding:9px 10px}.float-asset{left:-4px}.float-cold{right:-4px}.float-swap{left:-2px}.float-dapp{right:-2px}.download-btn{width:100%}.section{padding:52px 0}}