:root{
  --primary:#2980FE;
  --primary-dark:#176be3;
  --bg:#f7faff;
  --bg-soft:#eef5ff;
  --white:#ffffff;
  --text:#1f2937;
  --muted:#667085;
  --line:#e5ecf7;
  --deep:#344054;
  --shadow:0 18px 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","Microsoft JhengHei",Arial,sans-serif;color:var(--text);background:linear-gradient(180deg,#fff 0%,#f7faff 42%,#fff 100%);line-height:1.72;overflow-x:hidden}
a{color:inherit;text-decoration:none}
img{max-width:100%;height:auto;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)}
.nav-wrap{display:flex;align-items:center;justify-content:space-between;min-height:72px;gap:18px}
.logo,.footer-logo{display:flex;align-items:center;gap:10px;font-weight:800;color:#14213d;letter-spacing:.2px}
.logo img,.footer-logo img{width:38px;height:38px;object-fit:contain;border-radius:12px}
.site-nav{display:none;position:absolute;left:16px;right:16px;top:72px;background:#fff;border:1px solid var(--line);border-radius:20px;box-shadow:var(--shadow);padding:12px;grid-template-columns:1fr 1fr;gap:8px}
.site-nav.is-open{display:grid}
.site-nav a{padding:10px 12px;border-radius:14px;color:var(--deep);font-size:14px}
.site-nav a:hover{background:var(--bg-soft);color:var(--primary)}
.nav-toggle{border:1px solid var(--line);background:#fff;border-radius:14px;width:44px;height:44px;font-size:22px;color:var(--primary)}
.badge,.category-badge{display:inline-flex;align-items:center;gap:8px;padding:7px 12px;border-radius:999px;background:#edf5ff;color:var(--primary);font-size:13px;font-weight:700;border:1px solid #d8e8ff}
.download-btn{display:inline-flex;align-items:center;justify-content:center;min-height:48px;padding:12px 22px;border-radius:999px;background:linear-gradient(135deg,var(--primary),#5aa0ff);color:#fff;font-weight:800;border:0;box-shadow:0 12px 26px rgba(41,128,254,.28);transition:.2s ease;white-space:nowrap}
.download-btn:hover{transform:translateY(-2px);box-shadow:0 18px 34px rgba(41,128,254,.32)}
.section{padding:64px 0}
.section-muted{background:linear-gradient(180deg,#f4f8ff,#fff)}
.section-head{display:flex;flex-direction:column;gap:10px;margin-bottom:26px}
.section-head h2{font-size:clamp(28px,5vw,44px);line-height:1.16;margin:0;color:#14213d;letter-spacing:-.6px}
.section-head p{margin:0;color:var(--muted);max-width:760px}
.portal-hero{position:relative;overflow:hidden;padding:58px 0 38px;background:radial-gradient(circle at 15% 15%,rgba(41,128,254,.16),transparent 28%),linear-gradient(180deg,#fff,#f3f8ff)}
.portal-hero:after{content:"";position:absolute;right:-90px;top:80px;width:280px;height:280px;border-radius:50%;background:rgba(41,128,254,.10);filter:blur(18px)}
.hero-grid{position:relative;z-index:1;display:grid;gap:32px;align-items:center}
.hero-copy h1{font-size:clamp(34px,8vw,66px);line-height:1.05;margin:14px 0;color:#0f172a;letter-spacing:-1.2px}
.hero-copy p{font-size:17px;color:var(--muted);margin:0 0 22px;max-width:650px}
.hero-actions{display:flex;flex-wrap:wrap;align-items:center;gap:14px;margin:22px 0}
.trust-tags{display:flex;flex-wrap:wrap;gap:10px;margin-top:18px}
.trust-tags span{font-size:13px;color:var(--deep);background:#fff;border:1px solid var(--line);border-radius:999px;padding:8px 12px}
.hero-visual{position:relative;min-height:360px;border-radius:32px;padding:28px;background:linear-gradient(145deg,#fff,#edf5ff);border:1px solid var(--line);box-shadow:var(--shadow);display:flex;align-items:center;justify-content:center}
.hero-visual .phone-img{max-height:420px;object-fit:contain;filter:drop-shadow(0 24px 36px rgba(16,24,40,.18))}
.float-card{position:absolute;background:#fff;border:1px solid var(--line);border-radius:18px;padding:10px 12px;box-shadow:0 16px 34px rgba(16,24,40,.10);font-size:13px;color:var(--deep)}
.float-card strong{display:block;color:#14213d}
.float-a{left:16px;top:26px}.float-b{right:18px;top:74px}.float-c{left:24px;bottom:44px}.float-d{right:26px;bottom:28px}
.channel-nav{padding:28px 0 58px;background:#fff}
.channel-grid,.category-grid{display:grid;grid-template-columns:1fr;gap:14px}
.channel-card,.ecosystem-category,.feature-card,.risk-card,.faq-item,.tip-card,.step-card{background:#fff;border:1px solid var(--line);border-radius:22px;box-shadow:0 12px 30px rgba(16,24,40,.05)}
.channel-card{padding:18px;display:flex;flex-direction:column;gap:8px;min-height:168px}
.channel-card .mini{width:max-content;font-size:12px;color:var(--primary);background:#edf5ff;border-radius:999px;padding:4px 9px;font-weight:800}
.channel-card h3,.feature-card h3,.risk-card h3,.step-card h3,.tip-card h3{margin:0;color:#14213d;line-height:1.28}
.channel-card p,.feature-card p,.risk-card p,.step-card p,.tip-card p{margin:0;color:var(--muted);font-size:15px}
.text-link{color:var(--primary);font-weight:800;margin-top:auto;display:inline-flex;align-items:center;gap:4px}
.split-feature{display:grid;gap:26px;align-items:center;padding:28px;border:1px solid var(--line);border-radius:30px;background:#fff;box-shadow:var(--shadow)}
.split-feature.reverse{background:linear-gradient(145deg,#f6faff,#fff)}
.split-copy h2{font-size:clamp(26px,5vw,42px);line-height:1.15;margin:10px 0;color:#14213d}
.split-copy p{color:var(--muted);margin:0 0 16px}
.feature-list,.check-list{display:grid;gap:10px;padding:0;margin:18px 0;list-style:none}
.feature-list li,.check-list li{position:relative;padding-left:26px;color:var(--deep)}
.feature-list li:before,.check-list li:before{content:"";position:absolute;left:0;top:.68em;width:10px;height:10px;border-radius:50%;background:var(--primary);box-shadow:0 0 0 4px rgba(41,128,254,.12)}
.split-media{border-radius:28px;background:linear-gradient(145deg,#eef5ff,#fff);border:1px solid var(--line);padding:22px;display:flex;align-items:center;justify-content:center;min-height:280px;overflow:hidden}
.split-media img{max-height:340px;object-fit:contain}
.wallet-split{border-top:4px solid rgba(41,128,254,.55)}
.cold-wallet-split{background:linear-gradient(145deg,#f3f7fc,#fff)}
.swap-split{border-top:4px solid rgba(41,128,254,.35)}
.dapp-split{background:linear-gradient(145deg,#fff,#f5f9ff)}
.safety-panel{padding:24px;border-radius:28px;background:linear-gradient(135deg,#edf5ff,#fff);border:1px solid #dbeaff}
.process-steps{display:grid;gap:14px;counter-reset:steps}
.step-card{padding:18px;position:relative;overflow:hidden}
.step-card:before{counter-increment:steps;content:counter(steps, decimal-leading-zero);display:inline-flex;align-items:center;justify-content:center;width:38px;height:38px;border-radius:14px;background:var(--primary);color:#fff;font-weight:900;margin-bottom:12px}
.step-card a{color:var(--primary);font-weight:800}
.risk-grid{display:grid;gap:14px}
.risk-card{padding:18px;border-left:4px solid var(--primary)}
.risk-card .action{margin-top:10px;padding:10px;border-radius:14px;background:#f6faff;color:var(--deep);font-size:14px}
.ecosystem-category{padding:18px;display:flex;flex-direction:column;gap:8px;min-height:158px}
.ecosystem-category span{color:var(--primary);font-weight:900;font-size:13px}
.faq-list{display:grid;gap:12px}
.faq-item{padding:18px}
.faq-item h3{margin:0 0 8px;color:#14213d;font-size:18px}
.faq-item p{margin:0;color:var(--muted)}
.cta-section{padding:56px 0;text-align:center;background:linear-gradient(135deg,#eef6ff,#fff)}
.cta-box{border:1px solid var(--line);border-radius:32px;background:#fff;box-shadow:var(--shadow);padding:34px 20px;max-width:820px;margin:0 auto}
.cta-box h2{font-size:clamp(26px,5vw,40px);margin:0 0 10px;color:#14213d}
.cta-box p{margin:0 auto 22px;color:var(--muted);max-width:620px}
.page-hero{padding:54px 0;background:radial-gradient(circle at 20% 0,rgba(41,128,254,.14),transparent 32%),linear-gradient(180deg,#fff,#f6faff);border-bottom:1px solid var(--line)}
.page-hero h1{font-size:clamp(32px,7vw,56px);line-height:1.08;margin:12px 0;color:#14213d;letter-spacing:-.8px}
.page-hero p{margin:0;color:var(--muted);max-width:780px;font-size:17px}
.article-layout{display:grid;gap:22px;align-items:start}
.article-main{display:grid;gap:18px}
.article-card{background:#fff;border:1px solid var(--line);border-radius:28px;padding:22px;box-shadow:0 12px 30px rgba(16,24,40,.05)}
.article-card h2{margin:0 0 12px;color:#14213d}
.article-card p{color:var(--muted);margin:0 0 12px}
.side-panel{position:relative;background:linear-gradient(180deg,#fff,#f4f8ff);border:1px solid var(--line);border-radius:28px;padding:22px;box-shadow:var(--shadow)}
.side-panel h3{margin:0 0 12px;color:#14213d}
.side-panel a{display:block;padding:10px 0;color:var(--primary);font-weight:800;border-top:1px solid var(--line)}
.download-inline{margin-top:18px}
.notice{padding:16px;border-radius:20px;background:#f5f9ff;border:1px solid #dbeaff;color:var(--deep)}
.number-list{margin:0;padding-left:20px;color:var(--deep)}
.number-list li{margin:10px 0}
.site-footer{background:#101828;color:#d0d5dd;padding-top:44px}
.footer-grid{display:grid;gap:26px}
.site-footer h3{color:#fff;margin:0 0 12px;font-size:16px}
.site-footer p{color:#98a2b3;margin:14px 0 0;max-width:430px}
.site-footer a{display:block;color:#d0d5dd;margin:8px 0}
.footer-logo{color:#fff}.footer-logo img{background:#fff}
.footer-bottom{text-align:center;border-top:1px solid rgba(255,255,255,.12);margin-top:34px;padding:18px;color:#98a2b3;font-size:14px}
@media (min-width:640px){
  .channel-grid{grid-template-columns:repeat(2,1fr)}
  .category-grid{grid-template-columns:repeat(2,1fr)}
  .risk-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{position:static;display:flex;background:transparent;border:0;box-shadow:none;padding:0;gap:4px;align-items:center}
  .site-nav a{font-size:14px;padding:9px 10px}
  .hero-grid{grid-template-columns:1.02fr .98fr}
  .portal-hero{padding:82px 0 48px}
  .channel-grid{grid-template-columns:repeat(3,1fr)}
  .split-feature{grid-template-columns:1fr 1fr;padding:38px}
  .split-feature.reverse .split-media{order:-1}
  .category-grid{grid-template-columns:repeat(4,1fr)}
  .risk-grid{grid-template-columns:repeat(4,1fr)}
  .process-steps{grid-template-columns:repeat(3,1fr)}
  .article-layout{grid-template-columns:minmax(0,1fr) 320px}
  .side-panel{position:sticky;top:96px}
  .footer-grid{grid-template-columns:1.35fr repeat(3,1fr)}
}
@media (min-width:1100px){
  .site-nav a{padding:9px 12px}
  .risk-grid{grid-template-columns:repeat(4,1fr)}
}
@media (max-width:420px){
  .container{width:min(100% - 24px,1120px)}
  .hero-visual{min-height:310px;padding:18px;border-radius:24px}
  .float-card{font-size:12px;padding:8px 10px}
  .float-a{left:10px}.float-b{right:10px}.float-c{left:10px}.float-d{right:10px}
  .split-feature{padding:20px;border-radius:24px}
  .download-btn{width:100%}
}