:root{
  --primary:#2980FE;
  --primary-dark:#1267df;
  --primary-soft:#eaf3ff;
  --bg:#ffffff;
  --bg-soft:#f6f9fd;
  --bg-blue:#f1f7ff;
  --text:#1e293b;
  --muted:#64748b;
  --line:#e2e8f0;
  --card:#ffffff;
  --shadow:0 18px 50px rgba(15, 47, 90, .08);
  --radius:24px;
  --radius-lg:32px;
  --max:1180px;
}
*{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;
  color:var(--text);
  background:linear-gradient(180deg,#fff 0%,#f8fbff 48%,#fff 100%);
  line-height:1.75;
  overflow-x:hidden;
}
a{color:inherit;text-decoration:none}
img{max-width:100%;display:block}
.container{width:min(var(--max),calc(100% - 32px));margin:0 auto}
.site-header{
  position:sticky;top:0;z-index:50;
  background:rgba(255,255,255,.92);
  border-bottom:1px solid rgba(226,232,240,.85);
  backdrop-filter:blur(18px);
}
.nav-wrap{display:flex;align-items:center;justify-content:space-between;min-height:72px;gap:18px}
.brand,.footer-brand{display:flex;align-items:center;gap:10px;font-weight:800;letter-spacing:.02em}
.brand-logo{width:38px;height:38px;object-fit:contain;border-radius:12px}
.brand-text{font-size:20px;color:#111827}
.site-nav{display:none;position:absolute;left:16px;right:16px;top:72px;background:#fff;border:1px solid var(--line);border-radius:22px;padding:12px;box-shadow:var(--shadow)}
.site-nav.open{display:grid;grid-template-columns:1fr 1fr;gap:6px}
.site-nav a{font-size:14px;color:#334155;padding:10px 12px;border-radius:14px}
.site-nav a:hover,.site-nav a.active{color:var(--primary);background:var(--primary-soft)}
.nav-toggle{border:1px solid var(--line);background:#fff;color:#1e293b;border-radius:999px;padding:9px 14px;font-weight:700}
.section{padding:70px 0}
.section-tight{padding:46px 0}
.section-head{max-width:760px;margin:0 auto 26px;text-align:center}
.kicker,.badge{display:inline-flex;align-items:center;gap:8px;border:1px solid rgba(41,128,254,.18);background:var(--primary-soft);color:var(--primary);border-radius:999px;padding:6px 12px;font-size:13px;font-weight:800;letter-spacing:.04em}
h1,h2,h3{line-height:1.18;margin:0 0 14px;color:#0f172a}
h1{font-size:clamp(34px,8vw,64px);letter-spacing:-.05em}
h2{font-size:clamp(28px,5vw,44px);letter-spacing:-.035em}
h3{font-size:21px;letter-spacing:-.015em}
p{margin:0 0 16px;color:var(--muted)}
.lead{font-size:18px;color:#475569;max-width:720px}
.download-btn{
  display:inline-flex;align-items:center;justify-content:center;
  min-height:48px;padding:13px 24px;
  background:var(--primary);color:#fff!important;border-radius:999px;
  font-weight:900;letter-spacing:.02em;box-shadow:0 14px 30px rgba(41,128,254,.24);
  border:0;transition:transform .2s ease,box-shadow .2s ease,background .2s ease;
}
.download-btn:hover{transform:translateY(-2px);background:var(--primary-dark);box-shadow:0 18px 38px rgba(41,128,254,.30)}
.link-arrow{display:inline-flex;align-items:center;color:var(--primary);font-weight:800;margin-top:8px}
.link-arrow:after{content:"→";margin-left:6px}
.web3-hero{position:relative;padding:72px 0 48px;overflow:hidden}
.web3-hero:before{content:"";position:absolute;inset:-120px -70px auto auto;width:420px;height:420px;background:radial-gradient(circle,rgba(41,128,254,.18),rgba(41,128,254,0) 64%);pointer-events:none}
.hero-grid{display:grid;gap:34px;align-items:center}
.hero-copy{position:relative;z-index:2}
.hero-actions{display:flex;align-items:center;gap:14px;flex-wrap:wrap;margin:24px 0}
.hero-tags,.floating-tags,.pill-row{display:flex;flex-wrap:wrap;gap:10px}
.hero-tags span,.floating-tags span,.pill-row span{border:1px solid var(--line);background:#fff;color:#334155;border-radius:999px;padding:8px 12px;font-weight:700;font-size:13px}
.hero-visual{position:relative;min-height:380px;display:grid;place-items:center;background:linear-gradient(145deg,#f8fbff,#edf6ff);border:1px solid var(--line);border-radius:var(--radius-lg);box-shadow:var(--shadow);overflow:hidden;padding:22px}
.hero-visual:before{content:"";position:absolute;width:300px;height:300px;border-radius:50%;border:1px solid rgba(41,128,254,.18)}
.hero-visual img{max-height:430px;object-fit:contain;position:relative;z-index:2;filter:drop-shadow(0 24px 34px rgba(15,47,90,.14))}
.floating-tags{position:absolute;inset:18px;align-content:space-between;justify-content:space-between;z-index:3;pointer-events:none}
.floating-tags span{background:rgba(255,255,255,.86);backdrop-filter:blur(12px)}
.ecosystem-nav{padding:26px 0 60px}
.ecosystem-grid,.category-grid{display:grid;gap:16px}
.ecosystem-card,.info-card,.risk-card,.faq-item,.step-card,.mini-card,.article-card{
  background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:22px;box-shadow:0 10px 26px rgba(15,47,90,.05);
}
.ecosystem-card{position:relative;overflow:hidden;min-height:180px}
.ecosystem-card:before{content:"";position:absolute;left:0;top:0;width:100%;height:4px;background:linear-gradient(90deg,var(--primary),rgba(41,128,254,.08))}
.ecosystem-card .tag{display:inline-flex;background:var(--primary-soft);color:var(--primary);border-radius:999px;padding:4px 10px;font-size:12px;font-weight:900;margin-bottom:12px}
.feature-section{padding:72px 0}
.feature-band{background:var(--bg-blue);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.feature-grid{display:grid;gap:28px;align-items:center}
.feature-grid.reverse .feature-media{order:-1}
.feature-copy ul,.article-content ul,.check-list{padding-left:18px;margin:16px 0;color:#475569}
.feature-copy li,.article-content li,.check-list li{margin:8px 0}
.feature-media{background:#fff;border:1px solid var(--line);border-radius:var(--radius-lg);padding:24px;box-shadow:var(--shadow);overflow:hidden}
.feature-media.soft{background:linear-gradient(145deg,#fff,#f2f8ff)}
.feature-media img{border-radius:22px;margin:auto;max-height:360px;object-fit:contain}
.privacy-panel,.submit-panel,.developer-panel,.cta-section{
  border:1px solid var(--line);border-radius:var(--radius-lg);background:linear-gradient(145deg,#fff,#f5f9ff);box-shadow:var(--shadow);padding:28px;
}
.privacy-grid,.submit-grid,.developer-grid{display:grid;gap:18px}
.mini-card h3{font-size:18px}.mini-card p{font-size:15px;margin-bottom:0}
.code-panel{background:#0f172a;color:#dbeafe;border-radius:22px;padding:20px;overflow:hidden;border:1px solid rgba(255,255,255,.08)}
.code-panel code{display:block;white-space:pre-wrap;font-family:"SFMono-Regular",Consolas,"Liberation Mono",monospace;font-size:13px;line-height:1.8;color:#dbeafe}
.code-panel .line{display:block;color:#93c5fd}
.process-steps{display:grid;gap:16px;counter-reset:steps}
.step-card{position:relative;padding-left:72px;min-height:148px}
.step-card:before{counter-increment:steps;content:counter(steps, decimal-leading-zero);position:absolute;left:22px;top:24px;width:36px;height:36px;border-radius:14px;background:var(--primary);color:#fff;display:grid;place-items:center;font-weight:900;font-size:13px}
.risk-grid{display:grid;gap:16px}
.risk-card{border-left:4px solid var(--primary)}
.risk-card strong{display:block;color:#0f172a;margin-bottom:6px}
.faq-list{display:grid;gap:14px}.faq-item h3{font-size:18px}.faq-item p{margin:0}
.cta-section{text-align:center;margin:22px auto 0;max-width:920px;background:linear-gradient(135deg,#eef6ff,#fff)}
.cta-section .download-btn{margin-top:8px}
.page-hero{padding:68px 0 34px;background:radial-gradient(circle at 82% 8%,rgba(41,128,254,.16),transparent 34%),linear-gradient(180deg,#fff,#f7fbff);border-bottom:1px solid var(--line)}
.page-hero .container{display:grid;gap:18px}
.article-layout{display:grid;gap:24px;align-items:start}
.article-content{background:#fff;border:1px solid var(--line);border-radius:var(--radius-lg);padding:26px;box-shadow:var(--shadow)}
.article-content h2{font-size:28px;margin-top:22px}.article-content h2:first-child{margin-top:0}
.article-sidebar{display:grid;gap:16px}.side-note{background:var(--primary-soft);border:1px solid rgba(41,128,254,.18);border-radius:22px;padding:20px}.side-note p{margin:0}
.two-col{display:grid;gap:18px}.download-block{margin-top:24px;padding-top:20px;border-top:1px solid var(--line)}
.download-card{max-width:780px;margin:0 auto;background:#fff;border:1px solid var(--line);border-radius:var(--radius-lg);box-shadow:var(--shadow);padding:28px;text-align:center}
.install-steps{display:grid;gap:14px;margin:26px 0}.install-step{display:flex;gap:14px;align-items:flex-start;background:var(--bg-soft);border:1px solid var(--line);border-radius:18px;padding:16px}.install-step span{flex:0 0 34px;height:34px;border-radius:12px;background:var(--primary);color:#fff;display:grid;place-items:center;font-weight:900}
.site-footer{margin-top:70px;background:#0f172a;color:#cbd5e1;padding:46px 0 20px}.site-footer p,.site-footer a,.footer-bottom{color:#94a3b8}.site-footer h2{font-size:16px;color:#fff;margin-bottom:10px}.site-footer a{display:block;margin:7px 0}.footer-brand img{width:34px;height:34px;border-radius:10px}.footer-brand span{color:#fff}.footer-grid{display:grid;gap:28px}.footer-bottom{display:flex;flex-direction:column;gap:8px;border-top:1px solid rgba(255,255,255,.1);margin-top:28px;padding-top:18px;font-size:13px}
@media (min-width:640px){
  .ecosystem-grid{grid-template-columns:repeat(2,1fr)}.category-grid,.risk-grid,.privacy-grid,.submit-grid{grid-template-columns:repeat(2,1fr)}.process-steps{grid-template-columns:repeat(2,1fr)}.two-col{grid-template-columns:repeat(2,1fr)}
}
@media (min-width:900px){
  .nav-toggle{display:none}.site-nav{display:flex;position:static;background:transparent;border:0;border-radius:0;padding:0;box-shadow:none;gap:2px;align-items:center}.site-nav.open{display:flex}.site-nav a{padding:9px 10px;font-size:13px}
  .hero-grid,.feature-grid,.developer-grid,.submit-grid{grid-template-columns:1.05fr .95fr}.hero-grid{gap:52px}.feature-grid.reverse .feature-media{order:2}
  .ecosystem-grid{grid-template-columns:repeat(4,1fr)}.ecosystem-card:nth-child(1),.ecosystem-card:nth-child(7){grid-column:span 2}.category-grid{grid-template-columns:repeat(4,1fr)}.risk-grid{grid-template-columns:repeat(3,1fr)}.privacy-grid{grid-template-columns:repeat(3,1fr)}.process-steps{grid-template-columns:repeat(3,1fr)}.article-layout{grid-template-columns:minmax(0,1fr) 320px}.footer-grid{grid-template-columns:2fr 1fr 1fr 1fr}.footer-bottom{flex-direction:row;justify-content:space-between}.article-content{padding:34px}.hero-visual{min-height:520px}.site-nav a{white-space:nowrap}
}
@media (min-width:1080px){.site-nav a{font-size:14px;padding:10px 12px}.section{padding:88px 0}.feature-section{padding:86px 0}}
@media (max-width:380px){.container{width:min(100% - 22px,var(--max))}.site-nav.open{grid-template-columns:1fr}.download-btn{width:100%;padding-left:18px;padding-right:18px}.hero-actions{align-items:stretch}.step-card{padding-left:22px;padding-top:74px}.step-card:before{top:22px}}