:root{
    --primary:#2980FE;
    --primary-soft:#EAF3FF;
    --primary-light:#F4F8FF;
    --text:#263142;
    --muted:#667085;
    --light:#F5F7FB;
    --line:#E5EAF2;
    --white:#FFFFFF;
    --deep:#172033;
    --shadow:0 18px 55px rgba(41,128,254,.12);
    --radius:22px;
}
*{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;
    color:var(--text);
    background:linear-gradient(180deg,#fff 0%,#f7faff 42%,#fff 100%);
    line-height:1.75;
    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}
.section{padding:58px 0}
.section-soft{background:linear-gradient(180deg,#f6f9ff 0%,#fff 100%)}
.section-title{max-width:760px;margin:0 auto 28px;text-align:center}
.section-title .eyebrow,.eyebrow{display:inline-flex;align-items:center;gap:6px;padding:6px 12px;border-radius:999px;background:var(--primary-soft);color:var(--primary);font-size:13px;font-weight:700;margin-bottom:14px}
.section-title h2,.page-hero h1,.app-hero h1{margin:0;color:var(--deep);line-height:1.15;letter-spacing:-.04em}
.section-title h2{font-size:clamp(28px,4vw,44px)}
.section-title p,.lead{color:var(--muted);font-size:16px;margin:14px 0 0}
.site-header{position:sticky;top:0;z-index:50;background:rgba(255,255,255,.9);backdrop-filter:blur(18px);border-bottom:1px solid rgba(229,234,242,.75)}
.header-inner{height:68px;display:flex;align-items:center;justify-content:space-between;gap:18px}
.brand{display:flex;align-items:center;gap:10px;font-weight:800;color:var(--deep);letter-spacing:-.02em}
.brand-logo{width:34px;height:34px;border-radius:12px;object-fit:contain;background:#fff}
.brand-text{font-size:18px}
.nav-toggle{display:none}
.nav-toggle-label{width:42px;height:42px;border:1px solid var(--line);border-radius:14px;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:5px;background:#fff}
.nav-toggle-label span{width:18px;height:2px;border-radius:10px;background:var(--deep)}
.site-nav{position:absolute;top:68px;left:16px;right:16px;display:none;flex-direction:column;padding:12px;background:#fff;border:1px solid var(--line);border-radius:18px;box-shadow:var(--shadow)}
.site-nav a{padding:11px 12px;border-radius:12px;color:#425066;font-size:14px;font-weight:600}
.site-nav a:hover{background:var(--primary-soft);color:var(--primary)}
.nav-toggle:checked ~ .site-nav{display:flex}
.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 15px 32px rgba(41,128,254,.28);border:1px solid rgba(41,128,254,.15);transition:transform .2s ease,box-shadow .2s ease}
.download-btn:hover{transform:translateY(-2px);box-shadow:0 20px 38px rgba(41,128,254,.34)}
.app-hero{position:relative;overflow:hidden;padding:58px 0 42px;background:radial-gradient(circle at 75% 18%,rgba(41,128,254,.18),transparent 32%),linear-gradient(135deg,#fff 0%,#f4f8ff 100%)}
.app-hero:before{content:"";position:absolute;inset:auto -120px -210px auto;width:420px;height:420px;background:rgba(41,128,254,.08);border-radius:50%}
.hero-grid{position:relative;display:grid;gap:36px;align-items:center}
.hero-copy h1{font-size:clamp(36px,7vw,68px);max-width:760px}
.hero-copy p{font-size:17px;color:var(--muted);max-width:620px;margin:18px 0 24px}
.security-tags{display:flex;flex-wrap:wrap;gap:10px;margin-top:18px}
.security-tags span{padding:8px 12px;background:#fff;border:1px solid var(--line);border-radius:999px;color:#475467;font-size:13px;font-weight:700}
.app-visual{position:relative;display:grid;place-items:center;min-height:420px;padding:28px;border:1px solid rgba(229,234,242,.85);border-radius:32px;background:linear-gradient(160deg,#fff 0%,#eef6ff 100%);box-shadow:var(--shadow)}
.app-visual img{max-height:430px;object-fit:contain;filter:drop-shadow(0 20px 30px rgba(34,61,96,.14))}
.floating-card{position:relative;margin:10px 0;padding:13px 15px;border-radius:18px;background:rgba(255,255,255,.95);border:1px solid var(--line);box-shadow:0 12px 30px rgba(32,45,68,.08);color:#475467;font-size:13px}
.floating-card strong{display:block;color:var(--deep);font-size:15px;margin-bottom:2px}
.floating-stack{display:grid;grid-template-columns:1fr;gap:8px;width:100%;margin-top:10px}
.ability-bar{display:grid;gap:14px;margin-top:-10px;position:relative;z-index:2}
.ability-item{padding:18px;border:1px solid var(--line);background:#fff;border-radius:20px;box-shadow:0 14px 34px rgba(34,61,96,.06)}
.ability-item strong{display:block;color:var(--deep);margin-bottom:6px}
.ability-item p{margin:0;color:var(--muted);font-size:14px}
.ability-item:before{content:"";display:block;width:32px;height:4px;border-radius:999px;background:var(--primary);margin-bottom:12px}
.feature-showcase{display:grid;gap:18px}
.feature-card{background:#fff;border:1px solid var(--line);border-radius:28px;overflow:hidden;box-shadow:0 16px 42px rgba(34,61,96,.07);display:grid;grid-template-rows:auto 1fr}
.feature-card .feature-image{padding:24px;background:linear-gradient(135deg,#f7faff,#eef6ff);display:grid;place-items:center;min-height:210px}
.feature-card .feature-image img{max-height:210px;object-fit:contain}
.feature-card .feature-body{padding:24px}
.feature-card h3{margin:0 0 10px;font-size:24px;color:var(--deep)}
.feature-card p{color:var(--muted);margin:0 0 14px}
.text-link{color:var(--primary);font-weight:800}
.text-link:after{content:" →"}
.product-section{display:grid;gap:26px;align-items:center;padding:26px;border:1px solid var(--line);border-radius:32px;background:#fff;box-shadow:var(--shadow)}
.product-section.reverse{background:linear-gradient(135deg,#f8fbff,#fff)}
.product-copy h2{font-size:clamp(28px,4vw,42px);line-height:1.2;margin:0;color:var(--deep);letter-spacing:-.03em}
.product-copy p{color:var(--muted);margin:14px 0}
.product-media{display:grid;place-items:center;padding:22px;border-radius:28px;background:linear-gradient(160deg,#f4f8ff,#fff);border:1px solid var(--line);min-height:280px}
.product-media img{max-height:330px;object-fit:contain}
.point-list{display:grid;gap:10px;margin:20px 0;padding:0;list-style:none}
.point-list li{position:relative;padding-left:28px;color:#425066}
.point-list li:before{content:"";position:absolute;left:0;top:.65em;width:10px;height:10px;border-radius:50%;background:var(--primary);box-shadow:0 0 0 5px var(--primary-soft)}
.info-row{display:flex;flex-wrap:wrap;gap:10px;margin-top:14px}
.info-pill{padding:8px 11px;border-radius:999px;background:var(--primary-soft);color:var(--primary);font-weight:800;font-size:13px}
.dapp-combo{display:grid;gap:16px}
.auth-card{padding:18px;border-radius:22px;background:#fff;border:1px solid var(--line);box-shadow:0 10px 28px rgba(34,61,96,.06)}
.auth-card strong{display:block;color:var(--deep);margin-bottom:6px}
.auth-card p{margin:0;color:var(--muted)}
.process-steps{display:grid;gap:14px;counter-reset:step}
.step-card{position:relative;padding:20px 18px 18px;border:1px solid var(--line);border-radius:24px;background:#fff;box-shadow:0 14px 34px rgba(34,61,96,.06)}
.step-card .num{display:inline-grid;place-items:center;width:38px;height:38px;border-radius:14px;background:var(--primary);color:#fff;font-weight:900;margin-bottom:12px}
.step-card h3{margin:0 0 8px;color:var(--deep);font-size:18px}
.step-card p{margin:0 0 10px;color:var(--muted);font-size:14px}
.risk-grid{display:grid;gap:14px}
.risk-card{padding:20px;border-radius:22px;background:#fff;border:1px solid var(--line);border-top:4px solid var(--primary);box-shadow:0 12px 30px rgba(34,61,96,.06)}
.risk-card h3{margin:0 0 8px;font-size:18px;color:var(--deep)}
.risk-card p{margin:0 0 8px;color:var(--muted);font-size:14px}
.risk-card small{display:block;color:#475467;background:var(--primary-light);border-radius:14px;padding:10px;margin-top:10px}
.ecosystem-grid{display:grid;gap:14px}
.category-card{padding:20px;border:1px solid var(--line);border-radius:24px;background:linear-gradient(180deg,#fff,#fbfdff);box-shadow:0 12px 28px rgba(34,61,96,.05)}
.category-card h3{margin:0 0 8px;color:var(--deep)}
.category-card p{margin:0 0 12px;color:var(--muted);font-size:14px}
.faq-list{display:grid;gap:12px;max-width:920px;margin:0 auto}
.faq-item{background:#fff;border:1px solid var(--line);border-radius:22px;padding:18px 20px;box-shadow:0 12px 28px rgba(34,61,96,.05)}
.faq-item h3{margin:0 0 8px;color:var(--deep);font-size:18px}
.faq-item p{margin:0;color:var(--muted)}
.cta-section{padding:44px 22px;border-radius:32px;text-align:center;background:radial-gradient(circle at 50% 0,rgba(41,128,254,.16),transparent 45%),linear-gradient(135deg,#f4f8ff,#fff);border:1px solid var(--line);box-shadow:var(--shadow)}
.cta-section h2{margin:0;color:var(--deep);font-size:clamp(28px,4vw,42px);letter-spacing:-.03em}
.cta-section p{max-width:720px;margin:14px auto 22px;color:var(--muted)}
.page-hero{padding:54px 0 34px;background:linear-gradient(135deg,#fff,#f4f8ff);border-bottom:1px solid var(--line)}
.page-hero .container{display:grid;gap:14px}
.page-hero h1{font-size:clamp(32px,5vw,54px);max-width:860px}
.page-hero p{max-width:780px;color:var(--muted);font-size:17px;margin:0}
.page-layout{display:grid;gap:22px;align-items:start}
.article-card{background:#fff;border:1px solid var(--line);border-radius:28px;padding:24px;box-shadow:0 14px 36px rgba(34,61,96,.06)}
.article-card h2{margin:0 0 12px;color:var(--deep);font-size:26px}
.article-card h3{margin:24px 0 10px;color:var(--deep)}
.article-card p{color:var(--muted);margin:0 0 14px}
.side-panel{background:linear-gradient(180deg,#fff,#f5f9ff);border:1px solid var(--line);border-radius:28px;padding:22px;box-shadow:0 14px 36px rgba(34,61,96,.06)}
.side-panel h2,.side-panel h3{margin:0 0 12px;color:var(--deep)}
.check-list{display:grid;gap:10px;list-style:none;padding:0;margin:14px 0}
.check-list li{padding:12px 12px 12px 40px;border:1px solid var(--line);border-radius:16px;background:#fff;position:relative;color:#475467}
.check-list li:before{content:"✓";position:absolute;left:12px;top:10px;width:20px;height:20px;border-radius:50%;display:grid;place-items:center;background:var(--primary);color:#fff;font-size:12px;font-weight:900}
.note-box{padding:16px;border-radius:20px;background:var(--primary-soft);border:1px solid rgba(41,128,254,.15);color:#425066;margin:16px 0}
.mini-grid{display:grid;gap:12px;margin-top:16px}
.mini-card{padding:16px;border-radius:18px;background:#fff;border:1px solid var(--line)}
.mini-card strong{display:block;color:var(--deep);margin-bottom:6px}
.download-panel{margin-top:20px;padding:18px;border:1px dashed rgba(41,128,254,.35);border-radius:22px;background:#f8fbff;text-align:center}
.download-panel p{margin:0 0 14px;color:var(--muted)}
.download-page-card{max-width:920px;margin:0 auto;background:#fff;border:1px solid var(--line);border-radius:30px;padding:24px;box-shadow:var(--shadow)}
.install-steps{display:grid;gap:12px;margin:22px 0}
.install-step{display:flex;gap:14px;align-items:flex-start;padding:16px;border:1px solid var(--line);border-radius:20px;background:#fff}
.install-step span{flex:0 0 34px;height:34px;border-radius:14px;display:grid;place-items:center;background:var(--primary);color:#fff;font-weight:900}
.install-step h3{margin:0 0 4px;color:var(--deep);font-size:17px}
.install-step p{margin:0;color:var(--muted);font-size:14px}
.site-footer{background:#172033;color:#d9e2ef;margin-top:50px;padding:44px 0 20px}
.footer-grid{display:grid;gap:24px}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:12px;color:#fff}
.footer-brand img{width:34px;height:34px;border-radius:12px;background:#fff}
.site-footer p{margin:0;color:#aebbd0;font-size:14px;max-width:420px}
.site-footer h3{color:#fff;margin:0 0 10px;font-size:16px}
.site-footer a{display:block;color:#aebbd0;font-size:14px;margin:8px 0}
.site-footer a:hover{color:#fff}
.footer-bottom{border-top:1px solid rgba(255,255,255,.12);margin-top:28px;padding-top:18px;color:#93a3ba;font-size:13px}
@media (min-width:640px){
    .ability-bar{grid-template-columns:repeat(2,1fr)}
    .feature-showcase,.risk-grid,.ecosystem-grid,.mini-grid{grid-template-columns:repeat(2,1fr)}
    .process-steps{grid-template-columns:repeat(2,1fr)}
}
@media (min-width:900px){
    .section{padding:78px 0}
    .nav-toggle-label{display:none}
    .site-nav{position:static;display:flex;flex-direction:row;align-items:center;gap:4px;padding:0;border:0;box-shadow:none;background:transparent}
    .site-nav a{padding:8px 10px;font-size:13px}
    .hero-grid{grid-template-columns:minmax(0,1.02fr) minmax(420px,.98fr);gap:54px}
    .floating-stack{position:absolute;inset:0;pointer-events:none;display:block;margin:0}
    .floating-card{position:absolute;width:190px;margin:0}
    .floating-card.card-assets{left:-12px;top:42px}
    .floating-card.card-cold{right:-18px;top:88px}
    .floating-card.card-swap{left:24px;bottom:74px}
    .floating-card.card-dapp{right:14px;bottom:34px}
    .ability-bar{grid-template-columns:repeat(5,1fr)}
    .feature-showcase{grid-template-columns:repeat(2,1fr)}
    .product-section{grid-template-columns:1fr 1fr;padding:34px}
    .product-section.reverse .product-media{order:-1}
    .dapp-combo{grid-template-columns:1fr .72fr;align-items:center}
    .process-steps{grid-template-columns:repeat(3,1fr)}
    .risk-grid{grid-template-columns:repeat(3,1fr)}
    .ecosystem-grid{grid-template-columns:repeat(4,1fr)}
    .page-layout{grid-template-columns:minmax(0,1fr) 330px}
    .page-layout.reverse{grid-template-columns:330px minmax(0,1fr)}
    .page-layout.reverse .article-card{order:2}
    .footer-grid{grid-template-columns:1.4fr repeat(3,1fr)}
}
@media (min-width:1100px){
    .site-nav a{padding:9px 12px;font-size:14px}
    .process-steps{grid-template-columns:repeat(6,1fr)}
}