:root{
  --primary:#2980FE;
  --primary-dark:#1768d8;
  --bg:#f5f8fc;
  --soft:#eef5ff;
  --soft-2:#f8fbff;
  --text:#1f2937;
  --muted:#667085;
  --line:#e5eaf2;
  --white:#ffffff;
  --shadow:0 16px 38px rgba(36,78,134,.10);
  --shadow-soft:0 10px 26px rgba(41,128,254,.10);
  --radius:24px;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang TC","Microsoft JhengHei",Arial,sans-serif;color:var(--text);background:linear-gradient(180deg,#ffffff 0%,#f8fbff 36%,#f5f8fc 100%);line-height:1.75;font-size:16px;overflow-x:hidden}
a{color:inherit;text-decoration:none}
img{max-width:100%;display:block}
.container{width:min(1120px,calc(100% - 36px));margin:0 auto}
.site-header{position:sticky;top:0;z-index:20;background:rgba(255,255,255,.92);border-bottom:1px solid var(--line);backdrop-filter:blur(16px)}
.header-inner{min-height:72px;display:flex;align-items:center;justify-content:space-between;gap:18px}
.brand,.footer-brand{display:inline-flex;align-items:center;gap:10px;font-weight:800;color:#12213a;letter-spacing:.02em}
.logo-img,.footer-brand img{width:38px;height:38px;border-radius:12px;object-fit:cover;box-shadow:0 8px 22px rgba(41,128,254,.16)}
.nav-toggle{display:inline-flex;align-items:center;justify-content:center;width:44px;height:44px;border:1px solid var(--line);border-radius:14px;background:var(--white);color:var(--primary);font-size:22px}
.site-nav{position:absolute;left:18px;right:18px;top:76px;display:none;flex-direction:column;gap:4px;background:var(--white);border:1px solid var(--line);border-radius:20px;padding:12px;box-shadow:var(--shadow)}
.site-nav.open{display:flex}
.site-nav a{padding:10px 12px;border-radius:12px;color:#46556b;font-weight:650;font-size:14px}
.site-nav a:hover,.site-nav a.active{background:var(--soft);color:var(--primary)}
main{min-height:60vh}.section{padding:64px 0}.section-tight{padding:42px 0}.section-head{margin-bottom:28px;display:flex;flex-direction:column;gap:8px}.section-head.center{text-align:center;align-items:center}.eyebrow,.badge{display:inline-flex;align-items:center;gap:6px;width:max-content;border:1px solid rgba(41,128,254,.18);background:#eef5ff;color:var(--primary);padding:6px 12px;border-radius:999px;font-size:13px;font-weight:800}.section h2,.page-title h1{margin:0;color:#142033;line-height:1.22}.section h2{font-size:clamp(28px,4vw,42px)}.section p,.page-title p{color:var(--muted);margin:0}.muted{color:var(--muted)}
.portal-hero{position:relative;overflow:hidden;padding:58px 0 34px;background:radial-gradient(circle at 85% 12%,rgba(41,128,254,.16),transparent 36%),linear-gradient(135deg,#ffffff 0%,#f3f8ff 56%,#ffffff 100%)}
.portal-hero:before{content:"";position:absolute;inset:auto -18% -42% 42%;height:420px;background:radial-gradient(circle,rgba(41,128,254,.13),transparent 64%);pointer-events:none}.hero-grid{position:relative;display:grid;gap:34px;align-items:center}.hero-copy h1{margin:0 0 16px;font-size:clamp(36px,7vw,66px);line-height:1.08;color:#10233f;letter-spacing:-.03em}.hero-copy p{font-size:18px;color:#526174;max-width:660px;margin:0 0 22px}.hero-actions{display:flex;flex-wrap:wrap;align-items:center;gap:16px;margin:24px 0}.download-btn{display:inline-flex;align-items:center;justify-content:center;min-height:48px;padding:13px 26px;border-radius:999px;background:linear-gradient(135deg,var(--primary),#4c9cff);color:#fff;font-weight:800;box-shadow:0 14px 30px rgba(41,128,254,.25);border:0;cursor:pointer;transition:transform .2s ease,box-shadow .2s ease}.download-btn:hover{transform:translateY(-2px);box-shadow:0 18px 34px rgba(41,128,254,.30)}.safe-tags,.mini-tags{display:flex;flex-wrap:wrap;gap:10px}.safe-tags span,.mini-tags span{display:inline-flex;padding:8px 12px;border-radius:999px;background:rgba(255,255,255,.78);border:1px solid var(--line);color:#44546a;font-size:13px;font-weight:750}.hero-visual{position:relative;min-height:400px;border:1px solid rgba(41,128,254,.12);border-radius:32px;background:linear-gradient(155deg,#fff,#edf5ff);box-shadow:var(--shadow);display:flex;align-items:center;justify-content:center;padding:24px;overflow:hidden}.hero-visual img{max-height:430px;object-fit:contain;filter:drop-shadow(0 24px 30px rgba(38,80,132,.18))}.float-card{position:absolute;background:rgba(255,255,255,.92);border:1px solid var(--line);border-radius:18px;padding:13px 14px;box-shadow:0 12px 26px rgba(31,41,55,.10);font-size:13px;color:#506076}.float-card strong{display:block;color:#152238;font-size:15px}.float-card.card-assets{left:16px;bottom:22px}.float-card.card-cold{right:18px;top:24px}.float-card.card-swap{right:20px;bottom:96px}.float-card.card-dapp{left:26px;top:54px}.hero-channel-strip{position:relative;margin-top:30px;display:grid;grid-template-columns:repeat(2,1fr);gap:12px}.hero-channel-strip a{background:#fff;border:1px solid var(--line);border-radius:18px;padding:14px;box-shadow:var(--shadow-soft);font-weight:800;color:#142033}.hero-channel-strip span{display:block;color:var(--primary);font-size:12px;margin-bottom:2px}.channel-nav{display:grid;gap:14px}.channel-card,.feature-card,.risk-card,.category-card,.faq-item,.note-card,.step-card,.guide-card{background:var(--white);border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow-soft)}.channel-card{padding:20px;display:flex;flex-direction:column;gap:9px;min-height:164px}.channel-card .tag{width:max-content;background:var(--soft);color:var(--primary);border-radius:999px;padding:4px 10px;font-weight:800;font-size:12px}.channel-card h3,.feature-card h3,.risk-card h3,.category-card h3,.step-card h3,.note-card h3{margin:0;color:#152238}.channel-card p,.feature-card p,.risk-card p,.category-card p,.step-card p,.note-card p{margin:0;color:var(--muted)}.text-link{display:inline-flex;align-items:center;gap:6px;color:var(--primary);font-weight:800;margin-top:auto}.text-link:after{content:"→"}.split-feature{display:grid;gap:28px;align-items:center;padding:30px;border-radius:32px;background:#fff;border:1px solid var(--line);box-shadow:var(--shadow-soft)}.split-feature.alt{background:linear-gradient(145deg,#f8fbff,#eef5ff)}.split-feature .image-panel{border-radius:28px;background:linear-gradient(145deg,#f7fbff,#fff);border:1px solid var(--line);padding:22px;min-height:300px;display:flex;align-items:center;justify-content:center;overflow:hidden}.split-feature .image-panel img{max-height:360px;object-fit:contain}.split-feature h2{margin:0 0 12px}.check-list{list-style:none;margin:18px 0;padding:0;display:grid;gap:10px}.check-list li{position:relative;padding-left:28px;color:#435166}.check-list li:before{content:"";position:absolute;left:0;top:.65em;width:14px;height:14px;border-radius:50%;background:var(--primary);box-shadow:inset 0 0 0 4px #dcecff}.info-row{display:grid;gap:14px;margin-top:20px}.feature-card{padding:20px}.process-steps{display:grid;gap:14px}.step-card{padding:20px;position:relative;overflow:hidden}.step-number{display:inline-flex;width:38px;height:38px;border-radius:14px;align-items:center;justify-content:center;background:var(--primary);color:#fff;font-weight:900;margin-bottom:12px}.risk-grid,.category-grid,.faq-grid,.guide-grid{display:grid;gap:16px}.risk-card{padding:20px;border-left:4px solid var(--primary)}.risk-card .suggest{margin-top:10px;padding:10px 12px;border-radius:14px;background:var(--soft-2);color:#46556b;font-size:14px}.category-card{padding:22px;min-height:174px;display:flex;flex-direction:column;gap:9px}.category-card .icon-dot{width:38px;height:38px;border-radius:14px;background:linear-gradient(135deg,var(--primary),#72b0ff);box-shadow:0 10px 20px rgba(41,128,254,.18)}.faq-item{padding:18px 20px}.faq-item h3{margin:0 0 8px;color:#152238;font-size:17px}.faq-item p{margin:0;color:var(--muted)}.cta-section{padding:58px 0;background:linear-gradient(135deg,#eef5ff 0%,#fff 65%,#f6f9ff 100%)}.cta-box{text-align:center;border:1px solid rgba(41,128,254,.14);border-radius:32px;background:#fff;padding:34px 22px;box-shadow:var(--shadow)}.cta-box h2{margin:0 0 10px;font-size:clamp(28px,4vw,42px)}.cta-box p{margin:0 auto 22px;color:var(--muted);max-width:680px}.page-hero{padding:54px 0;background:radial-gradient(circle at 86% 10%,rgba(41,128,254,.14),transparent 34%),linear-gradient(135deg,#ffffff,#f1f7ff)}.page-title{max-width:790px}.page-title h1{font-size:clamp(34px,6vw,54px);margin:12px 0 14px}.content-layout{display:grid;gap:22px}.article-card{background:#fff;border:1px solid var(--line);border-radius:30px;padding:26px;box-shadow:var(--shadow-soft)}.article-card h2{font-size:clamp(24px,4vw,34px);margin:0 0 12px}.article-card p{color:#536175}.article-card p:first-of-type{margin-top:0}.guide-card{padding:20px}.guide-card h3{margin:0 0 8px}.guide-card p{margin:0;color:var(--muted)}.side-panel{display:grid;gap:16px}.note-card{padding:20px}.number-list{counter-reset:item;list-style:none;margin:18px 0 0;padding:0;display:grid;gap:12px}.number-list li{counter-increment:item;position:relative;padding:14px 14px 14px 54px;background:#f8fbff;border:1px solid var(--line);border-radius:18px;color:#46556b}.number-list li:before{content:counter(item);position:absolute;left:14px;top:14px;width:28px;height:28px;border-radius:11px;background:var(--primary);color:#fff;display:flex;align-items:center;justify-content:center;font-weight:900}.download-panel{margin-top:22px;padding:22px;border-radius:24px;background:linear-gradient(135deg,#f0f6ff,#ffffff);border:1px solid var(--line);display:flex;flex-direction:column;gap:14px;align-items:flex-start}.download-panel p{margin:0;color:var(--muted)}.faq-page{display:grid;gap:16px}.site-footer{background:#111827;color:#d1d5db;padding:44px 0 20px}.footer-grid{display:grid;gap:24px}.site-footer p{color:#aeb8c6;margin:12px 0 0}.site-footer h3{color:#fff;margin:0 0 10px;font-size:16px}.site-footer a:not(.footer-brand){display:block;color:#cbd5e1;padding:4px 0}.footer-brand{color:#fff}.footer-bottom{border-top:1px solid rgba(255,255,255,.10);margin-top:28px;padding-top:18px;color:#94a3b8;font-size:14px}.pill-row{display:flex;flex-wrap:wrap;gap:10px;margin-top:16px}.pill-row span{padding:8px 12px;border-radius:999px;background:#f4f8ff;border:1px solid var(--line);color:#46556b;font-weight:750;font-size:13px}.image-mini-grid{display:grid;grid-template-columns:1fr;gap:12px}.image-mini-card{background:#fff;border:1px solid var(--line);border-radius:22px;padding:16px;box-shadow:var(--shadow-soft)}
@media (min-width:640px){.hero-channel-strip,.channel-nav,.category-grid,.risk-grid,.faq-grid,.guide-grid{grid-template-columns:repeat(2,1fr)}.info-row{grid-template-columns:repeat(2,1fr)}.footer-grid{grid-template-columns:1.5fr 1fr 1fr 1fr}.image-mini-grid{grid-template-columns:repeat(2,1fr)}}
@media (min-width:900px){.container{width:min(1160px,calc(100% - 64px))}.nav-toggle{display:none}.site-nav{position:static;display:flex !important;flex-direction:row;align-items:center;gap:2px;background:transparent;border:0;border-radius:0;padding:0;box-shadow:none}.site-nav a{font-size:14px;padding:9px 10px}.portal-hero{padding:82px 0 42px}.hero-grid{grid-template-columns:1.02fr .98fr}.hero-channel-strip{grid-template-columns:repeat(6,1fr)}.channel-nav{grid-template-columns:repeat(3,1fr)}.split-feature{grid-template-columns:1fr 1fr;padding:40px}.split-feature.reverse .feature-copy{order:2}.split-feature.reverse .image-panel{order:1}.process-steps{grid-template-columns:repeat(3,1fr)}.risk-grid{grid-template-columns:repeat(3,1fr)}.category-grid{grid-template-columns:repeat(4,1fr)}.faq-grid{grid-template-columns:repeat(2,1fr)}.content-layout{grid-template-columns:minmax(0,1fr) 320px;align-items:start}.article-card{padding:34px}.guide-grid{grid-template-columns:repeat(3,1fr)}.page-hero{padding:78px 0}.footer-grid{grid-template-columns:2fr 1fr 1fr 1fr}}
@media (min-width:1100px){.site-nav a{padding:10px 12px}.hero-visual{min-height:520px}.process-steps{grid-template-columns:repeat(6,1fr)}.step-card{min-height:230px}}
@media (max-width:520px){.container{width:min(100% - 28px,1120px)}.portal-hero{padding-top:42px}.hero-actions{align-items:stretch}.download-btn{width:100%;min-height:52px}.float-card{display:none}.split-feature{padding:22px;border-radius:26px}.section{padding:48px 0}.article-card{padding:22px;border-radius:24px}.site-footer{padding-top:34px}.hero-channel-strip a{padding:12px}.page-title h1{font-size:32px}}