:root{
    --primary:#2980FE;
    --primary-soft:#EAF3FF;
    --blue-gray:#F4F8FF;
    --bg:#F7F9FC;
    --white:#FFFFFF;
    --text:#1F2937;
    --muted:#64748B;
    --line:#E5EAF2;
    --deep:#111827;
    --shadow:0 14px 36px rgba(31,41,55,.08);
    --radius:22px;
}
*{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;color:var(--text);background:linear-gradient(180deg,#fff 0%,#f7f9fc 44%,#fff 100%);line-height:1.75;overflow-x:hidden}
a{color:inherit;text-decoration:none}
img{max-width:100%;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(--line)}
.header-inner{width:min(1180px,calc(100% - 28px));margin:0 auto;display:flex;align-items:center;justify-content:space-between;min-height:68px;gap:18px}
.logo{display:flex;align-items:center;gap:10px;font-weight:800;color:var(--deep);font-size:18px;white-space:nowrap}
.logo img{width:36px;height:36px;border-radius:12px;object-fit:cover}
.nav-toggle{position:absolute;opacity:0;pointer-events:none}
.nav-toggle-label{display:flex;flex-direction:column;gap:5px;width:42px;height:42px;border:1px solid var(--line);border-radius:14px;align-items:center;justify-content:center;background:#fff}
.nav-toggle-label span{width:18px;height:2px;background:var(--deep);border-radius:999px}
.site-nav{position:absolute;top:68px;left:14px;right:14px;display:none;flex-direction:column;gap:8px;background:#fff;border:1px solid var(--line);box-shadow:var(--shadow);padding:14px;border-radius:20px}
.nav-toggle:checked~.site-nav{display:flex}
.site-nav a{font-size:14px;color:#42526B;padding:10px 12px;border-radius:12px}
.site-nav a.active,.site-nav a:hover{background:var(--primary-soft);color:var(--primary)}
.section{padding:58px 0}
.section-head{margin-bottom:26px;max-width:760px}
.eyebrow,.badge{display:inline-flex;align-items:center;gap:8px;font-size:13px;color:var(--primary);background:var(--primary-soft);border:1px solid #D9E9FF;padding:6px 12px;border-radius:999px;font-weight:700}
h1,h2,h3{line-height:1.25;color:var(--deep);margin:0 0 14px}
h1{font-size:clamp(34px,8vw,60px);letter-spacing:-1.6px}
h2{font-size:clamp(26px,5vw,40px);letter-spacing:-.8px}
h3{font-size:20px}
p{margin:0 0 14px;color:var(--muted)}
.lead{font-size:17px;color:#475569;max-width:720px}
.app-hero{position:relative;padding:70px 0 36px;background:radial-gradient(circle at 18% 8%,rgba(41,128,254,.14),transparent 28%),linear-gradient(180deg,#fff 0%,var(--blue-gray) 100%);overflow:hidden}
.app-hero:after{content:"";position:absolute;right:-120px;top:60px;width:360px;height:360px;border-radius:50%;background:rgba(41,128,254,.1);filter:blur(8px)}
.hero-grid{position:relative;z-index:1;display:grid;gap:34px;align-items:center}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin:26px 0 20px}
.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!important;font-weight:800;box-shadow:0 12px 28px rgba(41,128,254,.28);border:0;cursor:pointer;transition:.2s ease;white-space:nowrap}
.download-btn:hover{transform:translateY(-2px);box-shadow:0 18px 34px rgba(41,128,254,.34)}
.hero-tags,.pill-row{display:flex;flex-wrap:wrap;gap:10px}
.hero-tags span,.pill-row span{font-size:13px;color:#385168;background:#fff;border:1px solid var(--line);border-radius:999px;padding:8px 12px}
.app-visual{position:relative;background:linear-gradient(145deg,#fff,#f4f8ff);border:1px solid var(--line);border-radius:32px;padding:24px;box-shadow:var(--shadow);min-height:360px;display:flex;align-items:center;justify-content:center;overflow:hidden}
.app-visual .phone-img{max-height:430px;margin:0 auto;filter:drop-shadow(0 18px 28px rgba(31,41,55,.12))}
.floating-card{position:relative;margin:10px 0 0;background:rgba(255,255,255,.94);border:1px solid var(--line);border-radius:18px;padding:12px 14px;box-shadow:0 10px 22px rgba(31,41,55,.08);font-size:13px;color:#52657A}
.floating-card strong{display:block;color:var(--deep);font-size:15px;margin-bottom:2px}
.ability-bar{display:grid;gap:12px;margin-top:22px}
.ability-item{background:#fff;border:1px solid var(--line);border-radius:18px;padding:18px;box-shadow:0 8px 22px rgba(31,41,55,.04)}
.ability-item h3{font-size:17px;margin-bottom:6px;border-left:3px solid var(--primary);padding-left:10px}
.feature-showcase{display:grid;gap:18px}
.showcase-card{background:#fff;border:1px solid var(--line);border-radius:28px;padding:22px;box-shadow:var(--shadow);display:grid;gap:16px;overflow:hidden}
.showcase-card img{border-radius:22px;background:var(--blue-gray);max-height:260px;object-fit:contain;margin:auto}
.text-link{display:inline-flex;color:var(--primary);font-weight:800;margin-top:4px}
.product-section{padding:64px 0}
.product-panel{display:grid;gap:26px;align-items:center;background:#fff;border:1px solid var(--line);border-radius:32px;padding:24px;box-shadow:var(--shadow)}
.product-panel.alt,.cold-wallet-panel{background:linear-gradient(135deg,#F7FAFF,#FFFFFF)}
.product-panel img{border-radius:26px;background:var(--blue-gray);margin:auto;max-height:390px;object-fit:contain}
.check-list{display:grid;gap:10px;margin:18px 0 0;padding:0;list-style:none}
.check-list li{position:relative;background:var(--blue-gray);border:1px solid var(--line);border-radius:16px;padding:12px 12px 12px 38px;color:#475569}
.check-list li:before{content:"";position:absolute;left:14px;top:18px;width:10px;height:10px;background:var(--primary);border-radius:50%;box-shadow:0 0 0 5px rgba(41,128,254,.12)}
.ecosystem-grid,.category-grid{display:grid;gap:16px}
.eco-card,.feature-card,.risk-card,.faq-item,.info-card,.step-card{background:#fff;border:1px solid var(--line);border-radius:22px;padding:20px;box-shadow:0 8px 22px rgba(31,41,55,.04)}
.eco-card h3,.feature-card h3{font-size:18px}
.process-steps{display:grid;gap:14px;counter-reset:step}
.step-card{position:relative;padding-top:54px}
.step-card:before{counter-increment:step;content:counter(step,decimal-leading-zero);position:absolute;top:18px;left:18px;color:var(--primary);background:var(--primary-soft);border:1px solid #D9E9FF;font-weight:900;border-radius:999px;padding:3px 10px;font-size:13px}
.risk-grid{display:grid;gap:16px}
.risk-card{border-top:4px solid var(--primary)}
.risk-card .suggest{font-size:13px;color:#385168;background:var(--blue-gray);border-radius:14px;padding:10px;margin-top:10px}
.faq-list{display:grid;gap:14px}
.faq-item h3{font-size:17px;margin-bottom:8px}
.cta-section{padding:58px 0;background:linear-gradient(135deg,#EAF3FF 0%,#fff 55%,#F7FAFF 100%)}
.cta-box{text-align:center;background:#fff;border:1px solid var(--line);border-radius:32px;padding:34px 22px;box-shadow:var(--shadow)}
.page-hero{padding:54px 0 26px;background:linear-gradient(180deg,#fff,#F4F8FF)}
.page-hero .container{display:grid;gap:18px}
.content-layout{display:grid;gap:22px;align-items:start}
.article-card{background:#fff;border:1px solid var(--line);border-radius:28px;padding:24px;box-shadow:var(--shadow)}
.article-card h2{font-size:26px;margin-top:18px}
.article-card h2:first-child{margin-top:0}
.side-panel{background:linear-gradient(145deg,#fff,#F7FAFF);border:1px solid var(--line);border-radius:26px;padding:20px;box-shadow:0 8px 22px rgba(31,41,55,.05)}
.side-panel a{display:block;color:var(--primary);font-weight:800;margin:8px 0}
.notice-box{background:var(--blue-gray);border:1px solid var(--line);border-left:4px solid var(--primary);border-radius:18px;padding:16px;margin:18px 0;color:#475569}
.simple-grid{display:grid;gap:14px;margin-top:18px}
.download-steps{counter-reset:dstep;display:grid;gap:14px;margin:24px 0}
.download-steps li{list-style:none;counter-increment:dstep;background:#fff;border:1px solid var(--line);border-radius:18px;padding:16px 16px 16px 52px;position:relative;box-shadow:0 6px 16px rgba(31,41,55,.04)}
.download-steps li:before{content:counter(dstep);position:absolute;left:16px;top:17px;width:24px;height:24px;border-radius:50%;background:var(--primary);color:#fff;display:grid;place-items:center;font-weight:800;font-size:13px}
.site-footer{background:#111827;color:#D1D5DB;padding:42px 0 18px;margin-top:0}
.site-footer p{color:#AAB4C2}
.footer-grid{display:grid;gap:22px}
.footer-brand{display:flex;align-items:center;gap:10px;color:#fff;margin-bottom:10px}
.footer-brand img{width:34px;height:34px;border-radius:10px}
.site-footer h3{color:#fff;font-size:16px;margin-bottom:10px}
.site-footer a{display:block;color:#AAB4C2;margin:6px 0;font-size:14px}
.site-footer a:hover{color:#fff}
.footer-bottom{border-top:1px solid rgba(255,255,255,.12);margin-top:24px;padding-top:16px;font-size:13px;color:#9CA3AF}
@media (min-width:640px){
    .ability-bar{grid-template-columns:repeat(2,1fr)}
    .feature-showcase,.ecosystem-grid,.category-grid,.risk-grid,.simple-grid{grid-template-columns:repeat(2,1fr)}
}
@media (min-width:880px){
    .nav-toggle-label{display:none}
    .site-nav{position:static;display:flex!important;flex-direction:row;align-items:center;gap:2px;background:transparent;border:0;box-shadow:none;padding:0;border-radius:0}
    .site-nav a{padding:8px 10px}
    .hero-grid{grid-template-columns:minmax(0,1.02fr) minmax(360px,.98fr)}
    .ability-bar{grid-template-columns:repeat(5,1fr)}
    .feature-showcase{grid-template-columns:repeat(2,1fr)}
    .showcase-card{min-height:350px;grid-template-columns:1fr 1fr;align-items:center}
    .product-panel{grid-template-columns:1fr 1fr;padding:36px}
    .product-panel.reverse .panel-image{order:-1}
    .ecosystem-grid,.category-grid{grid-template-columns:repeat(4,1fr)}
    .process-steps{grid-template-columns:repeat(3,1fr)}
    .risk-grid{grid-template-columns:repeat(3,1fr)}
    .content-layout{grid-template-columns:minmax(0,1fr) 310px}
    .footer-grid{grid-template-columns:2fr 1fr 1fr 1fr}
    .floating-card{position:absolute;margin:0;max-width:190px}
    .floating-card.card-a{top:26px;left:22px}
    .floating-card.card-b{top:78px;right:18px}
    .floating-card.card-c{bottom:82px;left:18px}
    .floating-card.card-d{bottom:28px;right:24px}
}
@media (min-width:1080px){
    .site-nav a{padding:9px 12px}
    .section{padding:76px 0}
    .app-hero{padding:92px 0 46px}
}