:root{
  --primary:#2980FE;
  --primary-dark:#1265db;
  --text:#1f2937;
  --muted:#64748b;
  --soft:#f4f7fb;
  --soft-blue:#eef6ff;
  --line:#e5eaf2;
  --white:#ffffff;
  --deep:#0f172a;
  --shadow:0 18px 45px rgba(15,23,42,.08);
  --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%,#f8fbff 38%,#fff 100%);line-height:1.75;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-shell{min-height:72px;display:flex;align-items:center;justify-content:space-between;gap:16px}.logo{display:flex;align-items:center;gap:10px;font-weight:800;color:var(--deep);letter-spacing:.02em}.logo img{width:38px;height:38px;border-radius:12px}.site-nav{display:none;position:absolute;left:16px;right:16px;top:72px;background:var(--white);border:1px solid var(--line);box-shadow:var(--shadow);border-radius:20px;padding:12px}.site-nav.open{display:grid;gap:4px}.site-nav a{padding:10px 12px;border-radius:12px;color:var(--muted);font-weight:650;font-size:14px}.site-nav a:hover,.site-nav a.active{color:var(--primary);background:var(--soft-blue)}.nav-toggle{border:1px solid var(--line);background:var(--white);border-radius:14px;padding:9px 12px;font-size:20px;color:var(--deep)}.download-btn{display:inline-flex;align-items:center;justify-content:center;min-height:48px;padding:0 24px;border-radius:999px;background:var(--primary);color:#fff;font-weight:800;box-shadow:0 12px 30px rgba(41,128,254,.28);transition:.2s ease;border:0;white-space:nowrap}.download-btn:hover{background:var(--primary-dark);transform:translateY(-1px)}.eyebrow,.category-badge{display:inline-flex;align-items:center;gap:8px;border-radius:999px;background:var(--soft-blue);color:var(--primary);font-weight:800;padding:6px 12px;font-size:13px}.page-hero,.web3-hero{position:relative;padding:56px 0;overflow:hidden}.web3-hero:before,.page-hero:before{content:"";position:absolute;inset:0;background:radial-gradient(circle at 82% 18%,rgba(41,128,254,.16),transparent 34%),radial-gradient(circle at 10% 18%,rgba(41,128,254,.08),transparent 28%);z-index:-1}.hero-grid{display:grid;gap:32px;align-items:center}.hero-copy h1,.page-hero h1{font-size:clamp(34px,8vw,68px);line-height:1.08;margin:16px 0;color:var(--deep);letter-spacing:-.05em}.hero-copy p,.page-hero p{font-size:18px;color:var(--muted);margin:0 0 24px}.hero-actions{display:flex;align-items:center;flex-wrap:wrap;gap:14px}.trust-tags,.floating-tags,.mini-tags{display:flex;flex-wrap:wrap;gap:10px;margin-top:22px}.trust-tags span,.floating-tags span,.mini-tags span{padding:8px 12px;border:1px solid var(--line);background:rgba(255,255,255,.86);border-radius:999px;color:var(--muted);font-weight:700;font-size:13px}.hero-visual{position:relative;border:1px solid var(--line);background:linear-gradient(145deg,#fff,#eff6ff);border-radius:32px;padding:26px;box-shadow:var(--shadow);min-height:320px;display:grid;place-items:center}.hero-visual img{max-height:420px;object-fit:contain;filter:drop-shadow(0 24px 42px rgba(15,23,42,.12))}.floating-tags{position:absolute;inset:18px;align-content:space-between;justify-content:space-between;pointer-events:none}.section{padding:52px 0}.section-header{display:flex;flex-direction:column;gap:10px;margin-bottom:24px}.section-header h2{font-size:clamp(26px,5vw,42px);line-height:1.2;color:var(--deep);margin:0;letter-spacing:-.03em}.section-header p{margin:0;color:var(--muted);max-width:760px}.ecosystem-nav,.category-grid,.risk-grid,.faq-grid,.card-grid{display:grid;grid-template-columns:1fr;gap:16px}.ecosystem-card,.info-card,.risk-card,.faq-item,.step-card,.related-card,.plain-card{background:var(--white);border:1px solid var(--line);border-radius:var(--radius);padding:22px;box-shadow:0 10px 28px rgba(15,23,42,.04)}.ecosystem-card{position:relative;overflow:hidden}.ecosystem-card:before{content:"";position:absolute;left:0;top:0;height:4px;width:100%;background:linear-gradient(90deg,var(--primary),rgba(41,128,254,.2))}.ecosystem-card h3,.info-card h3,.risk-card h3,.faq-item h3,.step-card h3,.plain-card h3{margin:0 0 8px;color:var(--deep);font-size:20px}.ecosystem-card p,.info-card p,.risk-card p,.faq-item p,.step-card p,.plain-card p{margin:0;color:var(--muted)}.text-link{display:inline-flex;margin-top:14px;color:var(--primary);font-weight:800}.feature-split{display:grid;gap:22px;align-items:center;border:1px solid var(--line);border-radius:32px;padding:24px;background:var(--white);box-shadow:var(--shadow)}.feature-split.alt{background:linear-gradient(140deg,#f7fbff,#fff)}.feature-copy h2{font-size:clamp(28px,5vw,44px);line-height:1.18;margin:12px 0;color:var(--deep);letter-spacing:-.035em}.feature-copy p{color:var(--muted);margin:0 0 16px}.feature-media{border-radius:28px;overflow:hidden;background:linear-gradient(145deg,#eef6ff,#fff);border:1px solid var(--line);padding:18px;display:grid;place-items:center}.feature-media img{max-height:360px;object-fit:contain}.check-list{list-style:none;margin:18px 0 0;padding:0;display:grid;gap:10px}.check-list li{position:relative;padding-left:28px;color:var(--text)}.check-list li:before{content:"";position:absolute;left:0;top:.55em;width:12px;height:12px;border-radius:50%;background:var(--primary);box-shadow:0 0 0 5px rgba(41,128,254,.12)}.privacy-section,.submit-chain-section,.developer-center-section,.cta-section{border-radius:32px;padding:30px;border:1px solid var(--line);background:linear-gradient(135deg,#fff,#f3f8ff);box-shadow:var(--shadow)}.privacy-layout,.submit-layout,.developer-layout{display:grid;gap:22px;align-items:center}.security-pills{display:flex;flex-wrap:wrap;gap:10px}.security-pills span{border:1px solid var(--line);background:var(--white);padding:9px 12px;border-radius:999px;color:var(--muted);font-weight:700}.code-panel{background:#f8fbff;border:1px solid var(--line);border-radius:24px;padding:18px;font-family:"SFMono-Regular",Consolas,monospace;color:#334155;overflow:auto}.code-panel div{padding:6px 0;border-bottom:1px dashed #d7e2f1}.code-panel div:last-child{border-bottom:0}.process-steps{display:grid;gap:16px;counter-reset:step}.step-card{position:relative;padding-top:56px}.step-card:before{counter-increment:step;content:counter(step);position:absolute;left:20px;top:18px;width:30px;height:30px;border-radius:10px;display:grid;place-items:center;background:var(--primary);color:#fff;font-weight:900}.risk-card{border-left:4px solid var(--primary)}.risk-card strong{display:block;margin-top:10px;color:var(--deep)}.faq-item{box-shadow:none}.faq-item h3{font-size:18px}.page-layout{display:grid;gap:24px;align-items:start}.article-card{background:var(--white);border:1px solid var(--line);border-radius:32px;padding:26px;box-shadow:var(--shadow)}.article-card h2{font-size:28px;line-height:1.25;margin:28px 0 12px;color:var(--deep)}.article-card h2:first-child{margin-top:0}.article-card p{color:var(--muted);margin:0 0 16px}.side-panel{display:grid;gap:16px}.note-box{border:1px solid var(--line);background:var(--soft-blue);border-radius:22px;padding:18px;color:#31506f}.operation-list{display:grid;gap:12px;margin-top:18px}.operation-list div{background:#fff;border:1px solid var(--line);border-radius:18px;padding:16px}.download-area{margin-top:24px}.cta-section{text-align:center}.cta-section h2{font-size:clamp(28px,6vw,44px);line-height:1.2;margin:0 0 10px;color:var(--deep)}.cta-section p{color:var(--muted);margin:0 auto 22px;max-width:720px}.site-footer{margin-top:64px;background:#f6f8fc;border-top:1px solid var(--line);padding:38px 0 24px;color:var(--muted)}.footer-grid{display:grid;gap:24px}.footer-brand{font-size:22px;font-weight:900;color:var(--deep);margin-bottom:8px}.site-footer h3{margin:0 0 10px;color:var(--deep);font-size:16px}.site-footer a{display:block;color:var(--muted);padding:3px 0}.site-footer a:hover{color:var(--primary)}.footer-bottom{border-top:1px solid var(--line);margin-top:28px;padding-top:18px;font-size:14px}.download-page-steps{display:grid;gap:14px;margin:20px 0}.download-page-steps div{padding:18px;border:1px solid var(--line);border-radius:20px;background:#fff}.hero-mini-card{border:1px solid var(--line);background:#fff;border-radius:24px;padding:18px;box-shadow:var(--shadow)}
@media (min-width:640px){.ecosystem-nav,.category-grid,.faq-grid{grid-template-columns:repeat(2,1fr)}.risk-grid{grid-template-columns:repeat(2,1fr)}.process-steps{grid-template-columns:repeat(2,1fr)}.card-grid{grid-template-columns:repeat(2,1fr)}}
@media (min-width:900px){.nav-toggle{display:none}.site-nav{position:static;display:flex;align-items:center;gap:4px;background:transparent;border:0;box-shadow:none;border-radius:0;padding:0}.site-nav a{font-size:14px;padding:8px 10px}.hero-grid,.feature-split,.privacy-layout,.submit-layout,.developer-layout,.page-layout{grid-template-columns:1.04fr .96fr}.web3-hero{padding:86px 0 64px}.page-hero{padding:76px 0 46px}.section{padding:64px 0}.ecosystem-nav{grid-template-columns:repeat(4,1fr)}.category-grid{grid-template-columns:repeat(3,1fr)}.risk-grid{grid-template-columns:repeat(3,1fr)}.process-steps{grid-template-columns:repeat(3,1fr)}.footer-grid{grid-template-columns:1.5fr 1fr 1fr}.feature-split{padding:34px}.privacy-section,.submit-chain-section,.developer-center-section,.cta-section{padding:42px}.article-card{padding:36px}.side-panel{position:sticky;top:96px}.reverse .feature-copy{order:2}.reverse .feature-media{order:1}}
@media (min-width:1120px){.site-nav a{padding:9px 12px}.ecosystem-nav{grid-template-columns:repeat(7,1fr)}.ecosystem-card{padding:20px 16px}.ecosystem-card h3{font-size:18px}.ecosystem-card p{font-size:14px}}