:root{
  --primary:#2980FE;
  --primary-soft:#EAF3FF;
  --primary-light:#F4F8FF;
  --text:#1f2937;
  --muted:#667085;
  --line:#E5EAF2;
  --light:#F6F8FB;
  --white:#fff;
  --shadow:0 16px 45px 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","Noto Sans TC","PingFang TC","Microsoft JhengHei",Arial,sans-serif;background:linear-gradient(180deg,#fff 0%,#f7faff 45%,#fff 100%);color:var(--text);line-height:1.75;overflow-x:hidden}
a{color:inherit;text-decoration:none}
img{max-width:100%;display:block}
.content-container{width:min(1120px,calc(100% - 36px));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)}
.nav-shell{height:68px;display:flex;align-items:center;justify-content:space-between;gap:18px}
.brand,.footer-brand{display:flex;align-items:center;gap:10px;font-weight:800;color:#111827;letter-spacing:.2px}
.logo,.footer-brand img{width:34px;height:34px;object-fit:contain}
.site-nav{display:none;align-items:center;gap:4px;position:absolute;left:18px;right:18px;top:70px;background:#fff;border:1px solid var(--line);border-radius:22px;box-shadow:var(--shadow);padding:12px;flex-direction:column}
.site-nav.is-open{display:flex}
.site-nav a{width:100%;padding:10px 12px;border-radius:14px;color:#344054;font-size:15px}
.site-nav a:hover{background:var(--primary-soft);color:var(--primary)}
.nav-toggle{border:1px solid var(--line);background:#fff;border-radius:14px;width:42px;height:42px;font-size:20px;color:#111827}
.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;font-weight:800;box-shadow:0 14px 30px rgba(41,128,254,.24);transition:transform .2s ease,box-shadow .2s ease}
.download-btn:hover{transform:translateY(-2px);box-shadow:0 18px 38px rgba(41,128,254,.28)}
.section{padding:64px 0}.section-tight{padding:42px 0}.gradient-bg{background:linear-gradient(135deg,#f7fbff,#eef5ff)}
.eyebrow,.category-badge{display:inline-flex;align-items:center;gap:6px;padding:7px 12px;border-radius:999px;background:var(--primary-soft);color:var(--primary);font-size:13px;font-weight:800;margin-bottom:14px}
.section-head{max-width:760px;margin:0 auto 26px;text-align:center}.section-head h2{font-size:clamp(28px,4vw,44px);line-height:1.18;margin:0 0 12px}.section-head p{margin:0;color:var(--muted)}
.portal-hero{position:relative;padding:56px 0 38px;overflow:hidden}.portal-hero:before{content:"";position:absolute;inset:-180px -120px auto auto;width:420px;height:420px;background:radial-gradient(circle,rgba(41,128,254,.22),rgba(41,128,254,0) 70%);pointer-events:none}.portal-grid{display:grid;grid-template-columns:1fr;gap:34px;align-items:center}.hero-copy h1{font-size:clamp(38px,7vw,66px);line-height:1.05;margin:0 0 18px;letter-spacing:-1.6px}.hero-copy p{font-size:18px;color:#475467;margin:0 0 24px}.hero-tags,.mini-tags{display:flex;flex-wrap:wrap;gap:10px;margin-top:22px}.hero-tags span,.mini-tags span{padding:8px 12px;border:1px solid var(--line);border-radius:999px;background:#fff;color:#475467;font-size:13px}.hero-visual{position:relative;background:linear-gradient(145deg,#fff,#edf5ff);border:1px solid var(--line);border-radius:32px;padding:24px;box-shadow:var(--shadow);min-height:360px;display:grid;place-items:center}.hero-visual img{max-height:390px;object-fit:contain}.float-card{position:absolute;background:#fff;border:1px solid var(--line);border-radius:18px;padding:10px 13px;box-shadow:0 12px 30px rgba(16,24,40,.08);font-size:13px;color:#344054}.float-card strong{display:block;color:#111827}.float-card.one{left:18px;top:28px}.float-card.two{right:16px;top:42px}.float-card.three{left:24px;bottom:32px}.float-card.four{right:20px;bottom:28px}
.channel-nav,.category-grid,.risk-grid,.faq-grid,.feature-grid{display:grid;grid-template-columns:1fr;gap:16px}.channel-card,.ecosystem-card,.risk-card,.faq-item,.feature-card,.tip-card{background:#fff;border:1px solid var(--line);border-radius:22px;padding:20px;box-shadow:0 10px 28px rgba(16,24,40,.04)}.channel-card span,.ecosystem-card span,.risk-card span{display:inline-flex;color:var(--primary);font-weight:800;font-size:13px;margin-bottom:8px}.channel-card h3,.ecosystem-card h3,.risk-card h3,.feature-card h3{margin:0 0 8px;font-size:20px}.channel-card p,.ecosystem-card p,.risk-card p,.feature-card p,.tip-card p{margin:0;color:var(--muted)}.text-link{display:inline-flex;margin-top:12px;color:var(--primary);font-weight:800}.text-link:after{content:"→";margin-left:6px}
.split-feature-section{display:grid;grid-template-columns:1fr;gap:24px;align-items:center;background:#fff;border:1px solid var(--line);border-radius:30px;padding:24px;box-shadow:var(--shadow);overflow:hidden}.split-feature-section.alt{background:linear-gradient(135deg,#f8fbff,#fff)}.split-copy h2{font-size:clamp(28px,4vw,46px);line-height:1.18;margin:0 0 14px}.split-copy p{color:#475467;margin:0 0 16px}.check-list{list-style:none;margin:18px 0 0;padding:0;display:grid;gap:10px}.check-list li{position:relative;padding-left:28px;color:#344054}.check-list li:before{content:"";position:absolute;left:0;top:.62em;width:10px;height:10px;border-radius:50%;background:var(--primary);box-shadow:0 0 0 5px var(--primary-soft)}.feature-visual{background:var(--primary-light);border:1px solid var(--line);border-radius:26px;padding:20px;display:grid;place-items:center;min-height:260px}.feature-visual img{max-height:320px;object-fit:contain}
.wallet-split{}.cold-wallet-split{}.swap-split{}.dapp-split{}.ecosystem-category{}.safety-panel{background:linear-gradient(135deg,#f4f8ff,#fff);border:1px solid var(--line);border-radius:28px;padding:24px}.process-steps{display:grid;grid-template-columns:1fr;gap:14px}.step-card{background:#fff;border:1px solid var(--line);border-radius:20px;padding:18px}.step-card b{display:inline-grid;place-items:center;width:36px;height:36px;border-radius:14px;background:var(--primary);color:#fff;margin-bottom:10px}.step-card h3{margin:0 0 6px}.step-card p{margin:0;color:var(--muted)}.risk-card{border-left:4px solid var(--primary)}.faq-item h3{margin:0 0 8px;font-size:18px}.faq-item p{margin:0;color:var(--muted)}.cta-section{text-align:center;background:linear-gradient(135deg,#eef6ff,#fff);border:1px solid var(--line);border-radius:32px;padding:42px 20px;box-shadow:var(--shadow)}.cta-section h2{margin:0 0 12px;font-size:clamp(28px,4vw,44px)}.cta-section p{max-width:660px;margin:0 auto 22px;color:#475467}
.page-hero{padding:54px 0 24px;background:linear-gradient(180deg,#fff,#f6faff)}.page-hero-inner{max-width:840px}.page-hero h1{font-size:clamp(34px,5vw,58px);line-height:1.1;margin:0 0 14px}.page-hero p{font-size:18px;color:#475467;margin:0}.page-layout{display:grid;grid-template-columns:1fr;gap:24px;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:0 0 12px}.article-card p{color:#475467}.side-panel{background:#f8fbff;border:1px solid var(--line);border-radius:24px;padding:20px;position:sticky;top:92px}.side-panel h3{margin:0 0 12px}.info-list{padding-left:20px;color:#475467}.info-list li{margin:8px 0}.download-row{margin-top:22px}.download-page-card{max-width:860px;margin:0 auto;background:#fff;border:1px solid var(--line);border-radius:30px;padding:28px;box-shadow:var(--shadow)}
.site-footer{margin-top:70px;background:#0f172a;color:#d0d7e2;padding:48px 0 24px}.footer-grid{display:grid;grid-template-columns:1fr;gap:24px}.site-footer h3{color:#fff;margin:0 0 10px}.site-footer a{display:block;color:#d0d7e2;margin:8px 0}.footer-brand{color:#fff;margin-bottom:12px}.footer-bottom{border-top:1px solid rgba(255,255,255,.12);margin-top:30px;padding-top:20px;color:#98a2b3;font-size:14px}
@media (min-width:620px){.channel-nav,.category-grid{grid-template-columns:repeat(2,1fr)}.risk-grid,.faq-grid,.feature-grid{grid-template-columns:repeat(2,1fr)}.process-steps{grid-template-columns:repeat(2,1fr)}}
@media (min-width:900px){.nav-toggle{display:none}.site-nav{display:flex;position:static;flex-direction:row;background:transparent;border:0;box-shadow:none;padding:0}.site-nav a{width:auto;padding:8px 10px;font-size:14px}.portal-hero{padding:86px 0 52px}.portal-grid{grid-template-columns:1.02fr .98fr;gap:56px}.channel-nav{grid-template-columns:repeat(3,1fr)}.split-feature-section{grid-template-columns:1fr 1fr;padding:34px}.split-feature-section.reverse .feature-visual{order:-1}.category-grid{grid-template-columns:repeat(4,1fr)}.risk-grid{grid-template-columns:repeat(3,1fr)}.faq-grid{grid-template-columns:repeat(2,1fr)}.process-steps{grid-template-columns:repeat(3,1fr)}.page-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:1160px){.site-nav a{padding:8px 12px}.hero-visual{min-height:460px}.section{padding:78px 0}}