:root{
    --primary:#2980FE;
    --primary-soft:#EAF3FF;
    --primary-lighter:#F4F8FF;
    --bg:#F6F8FC;
    --text:#1F2937;
    --muted:#667085;
    --soft:#EEF2F7;
    --line:#E4EAF2;
    --white:#FFFFFF;
    --deep:#101828;
    --shadow:0 18px 45px rgba(31,41,55,.08);
    --radius:24px;
}
*{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%,#f7faff 38%,#fff 100%);line-height:1.7;overflow-x:hidden}
a{color:inherit;text-decoration:none}
img{max-width:100%;height:auto;display:block}
p{margin:0 0 16px;color:var(--muted)}
h1,h2,h3{margin:0;color:var(--deep);line-height:1.2}h1{font-size:clamp(34px,8vw,64px);letter-spacing:-.04em}h2{font-size:clamp(26px,5vw,42px);letter-spacing:-.03em}h3{font-size:20px}.section-title{max-width:760px;margin:0 auto 28px;text-align:center}.section-title p{font-size:17px;margin-top:12px}.site-header{position:sticky;top:0;z-index:50;background:rgba(255,255,255,.88);backdrop-filter:blur(16px);border-bottom:1px solid var(--line)}.header-inner{max-width:1180px;margin:auto;padding:14px 18px;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);white-space:nowrap}.brand-logo{width:36px;height:36px;border-radius:12px;object-fit:contain}.site-nav{display:none;gap:8px;align-items:center}.site-nav a{padding:9px 12px;border-radius:999px;color:#344054;font-size:14px}.site-nav a:hover{background:var(--primary-soft);color:var(--primary)}.nav-toggle{display:flex;width:42px;height:42px;border:1px solid var(--line);background:#fff;border-radius:14px;align-items:center;justify-content:center;flex-direction:column;gap:5px}.nav-toggle span{width:18px;height:2px;background:#344054;border-radius:3px}.site-nav.is-open{position:absolute;left:18px;right:18px;top:68px;display:grid;background:#fff;border:1px solid var(--line);box-shadow:var(--shadow);padding:14px;border-radius:20px}.container,.section{max-width:1180px;margin:0 auto;padding:64px 18px}.narrow{max-width:860px}.app-hero{position:relative;max-width:1180px;margin:0 auto;padding:72px 18px 44px;display:grid;gap:34px;overflow:hidden}.app-hero:before{content:"";position:absolute;inset:20px -80px auto auto;width:420px;height:420px;background:radial-gradient(circle,rgba(41,128,254,.18),rgba(41,128,254,0) 65%);pointer-events:none}.hero-copy{position:relative;z-index:2}.eyebrow,.badge{display:inline-flex;align-items:center;gap:8px;padding:8px 12px;border-radius:999px;background:var(--primary-soft);color:var(--primary);font-weight:700;font-size:13px;margin-bottom:16px}.hero-copy p{font-size:18px;margin:18px 0 24px}.download-btn{display:inline-flex;align-items:center;justify-content:center;min-height:50px;padding:13px 24px;border-radius:999px;background:var(--primary);color:#fff;font-weight:800;box-shadow:0 12px 25px rgba(41,128,254,.25);transition:transform .2s ease,box-shadow .2s ease}.download-btn:hover{transform:translateY(-2px);box-shadow:0 16px 32px rgba(41,128,254,.28)}.hero-tags{display:flex;flex-wrap:wrap;gap:10px;margin-top:22px}.hero-tags span{padding:8px 12px;border:1px solid var(--line);background:#fff;border-radius:999px;color:#344054;font-size:13px}.app-visual{position:relative;z-index:2;background:linear-gradient(145deg,#fff,#eef6ff);border:1px solid var(--line);border-radius:32px;padding:22px;box-shadow:var(--shadow);min-height:420px;display:flex;align-items:center;justify-content:center}.app-visual img{max-height:520px;object-fit:contain;filter:drop-shadow(0 18px 35px rgba(31,41,55,.16))}.floating-card{background:rgba(255,255,255,.94);border:1px solid var(--line);border-radius:20px;padding:14px;box-shadow:0 16px 35px rgba(31,41,55,.1)}.float-stack{display:grid;gap:10px;width:100%;margin-top:16px}.floating-card strong{display:block;color:var(--deep);font-size:15px}.floating-card span{font-size:12px;color:var(--muted)}.ability-bar{max-width:1180px;margin:0 auto;padding:0 18px 52px;display:grid;gap:12px}.ability-item{background:#fff;border:1px solid var(--line);border-radius:22px;padding:18px;box-shadow:0 10px 28px rgba(31,41,55,.05)}.ability-item:before{content:"";display:block;width:34px;height:4px;border-radius:999px;background:var(--primary);margin-bottom:12px}.ability-item h3{font-size:17px}.ability-item p{font-size:14px;margin:8px 0 0}.feature-showcase{display:grid;gap:18px}.feature-card{background:#fff;border:1px solid var(--line);border-radius:28px;padding:24px;box-shadow:var(--shadow);overflow:hidden}.feature-card p{margin-top:10px}.feature-card img{margin-top:18px;border-radius:22px;background:var(--primary-lighter);max-height:260px;width:100%;object-fit:contain}.text-link{display:inline-flex;margin-top:8px;color:var(--primary);font-weight:800}.product-section{display:grid;gap:28px;align-items:center;margin-top:28px;background:#fff;border:1px solid var(--line);border-radius:32px;padding:24px;box-shadow:var(--shadow)}.product-section.alt,.cold-wallet-panel{background:linear-gradient(145deg,#f7fbff,#fff)}.product-section img{border-radius:26px;background:var(--primary-lighter);object-fit:contain;width:100%;max-height:420px}.section-kicker{color:var(--primary);font-weight:800;margin-bottom:10px}.bullet-list{display:grid;gap:10px;margin:18px 0;padding:0;list-style:none}.bullet-list li{position:relative;padding-left:28px;color:#344054}.bullet-list li:before{content:"";position:absolute;left:0;top:10px;width:10px;height:10px;background:var(--primary);border-radius:50%;box-shadow:0 0 0 5px var(--primary-soft)}.mini-grid{display:grid;gap:14px}.mini-card{background:var(--primary-lighter);border:1px solid var(--line);border-radius:20px;padding:16px}.mini-card strong{display:block;color:var(--deep);margin-bottom:6px}.process-steps{display:grid;gap:16px;counter-reset:step}.step-card{position:relative;background:#fff;border:1px solid var(--line);border-radius:24px;padding:22px;box-shadow:0 10px 26px rgba(31,41,55,.05)}.step-card .num{width:36px;height:36px;border-radius:14px;background:var(--primary);color:#fff;display:flex;align-items:center;justify-content:center;font-weight:900;margin-bottom:12px}.risk-grid,.category-grid,.faq-grid{display:grid;gap:16px}.risk-card,.category-card,.faq-item,.info-panel{background:#fff;border:1px solid var(--line);border-radius:24px;padding:22px;box-shadow:0 10px 26px rgba(31,41,55,.05)}.risk-card{border-top:4px solid var(--primary)}.risk-card span{display:block;color:var(--primary);font-weight:800;margin-bottom:8px}.category-card{background:linear-gradient(180deg,#fff,#f8fbff)}.category-card h3{margin-bottom:8px}.faq-item h3{font-size:18px;margin-bottom:8px}.cta-section{text-align:center;background:linear-gradient(145deg,#eef6ff,#fff);border:1px solid var(--line);border-radius:34px;padding:42px 22px;box-shadow:var(--shadow)}.page-hero{max-width:980px;margin:0 auto;padding:58px 18px 28px}.page-hero h1{font-size:clamp(32px,7vw,54px)}.page-hero p{font-size:18px;margin-top:16px}.content-layout{max-width:1120px;margin:0 auto;padding:24px 18px 72px;display:grid;gap:24px}.article-card{background:#fff;border:1px solid var(--line);border-radius:30px;padding:24px;box-shadow:var(--shadow)}.article-card h2{font-size:26px;margin:24px 0 12px}.article-card h2:first-child{margin-top:0}.side-panel{display:grid;gap:16px;align-content:start}.checklist{display:grid;gap:10px;margin:16px 0;padding:0;list-style:none}.checklist li{padding:12px 14px;border:1px solid var(--line);border-radius:16px;background:var(--primary-lighter);color:#344054}.notice{background:#fff7ed;border:1px solid #fed7aa;border-radius:20px;padding:18px;color:#9a3412;margin:18px 0}.soft-notice{background:var(--primary-lighter);border:1px solid var(--line);border-radius:20px;padding:18px;margin:18px 0;color:#344054}.guide-actions{margin-top:24px;padding-top:22px;border-top:1px solid var(--line)}.download-steps{display:grid;gap:14px;margin:24px 0}.download-step{display:grid;grid-template-columns:42px 1fr;gap:12px;align-items:start;background:#fff;border:1px solid var(--line);border-radius:20px;padding:16px}.download-step span{width:42px;height:42px;border-radius:14px;background:var(--primary);color:#fff;font-weight:900;display:flex;align-items:center;justify-content:center}.site-footer{background:#fff;border-top:1px solid var(--line);margin-top:48px}.footer-grid{max-width:1180px;margin:auto;padding:44px 18px;display:grid;gap:26px}.footer-brand{font-size:22px;font-weight:900;color:var(--deep);margin-bottom:10px}.site-footer h3{font-size:16px;margin-bottom:12px}.site-footer a{display:block;color:var(--muted);margin:8px 0}.site-footer a:hover{color:var(--primary)}.footer-bottom{max-width:1180px;margin:auto;padding:18px;border-top:1px solid var(--line);color:var(--muted);font-size:13px}.split-bg{background:linear-gradient(180deg,transparent 0%,var(--primary-lighter) 15%,var(--primary-lighter) 85%,transparent 100%)}
@media (min-width:640px){.ability-bar{grid-template-columns:repeat(2,1fr)}.category-grid{grid-template-columns:repeat(2,1fr)}.risk-grid{grid-template-columns:repeat(2,1fr)}.mini-grid{grid-template-columns:repeat(2,1fr)}.faq-grid{grid-template-columns:repeat(2,1fr)}}
@media (min-width:860px){.nav-toggle{display:none}.site-nav{display:flex}.app-hero{grid-template-columns:1.02fr .98fr;align-items:center;padding-top:92px}.float-stack{position:absolute;inset:auto 22px 24px 22px;grid-template-columns:repeat(2,1fr);margin:0}.floating-card:nth-child(1){transform:translate(-18px,-300px)}.floating-card:nth-child(2){transform:translate(24px,-260px)}.floating-card:nth-child(3){transform:translate(-8px,4px)}.floating-card:nth-child(4){transform:translate(18px,-12px)}.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:2}.process-steps{grid-template-columns:repeat(3,1fr)}.category-grid{grid-template-columns:repeat(4,1fr)}.risk-grid{grid-template-columns:repeat(3,1fr)}.content-layout{grid-template-columns:minmax(0,1fr) 320px}.article-card{padding:34px}.footer-grid{grid-template-columns:1.4fr repeat(3,1fr)}}
@media (min-width:1120px){.container,.section{padding-top:84px;padding-bottom:84px}.app-visual{min-height:560px}.feature-card{padding:30px}}