:root{
  --primary:#2980FE;
  --primary-soft:#EAF3FF;
  --ink:#172033;
  --muted:#647086;
  --line:#E5EAF2;
  --bg:#F6F8FC;
  --panel:#FFFFFF;
  --gray:#F1F4F8;
  --deep:#2D3748;
  --radius:24px;
  --shadow:0 18px 45px rgba(38, 75, 120, .09);
}
*{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(--ink);
  background:linear-gradient(180deg,#FFFFFF 0%,#F6F8FC 46%,#FFFFFF 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}
.section{padding:54px 0}
.section-title{font-size:clamp(28px,5vw,44px);line-height:1.18;margin:0 0 14px;color:var(--ink);letter-spacing:-.02em}
.section-lead{margin:0 0 26px;color:var(--muted);font-size:17px;max-width:760px}
.eyebrow,.badge{display:inline-flex;align-items:center;gap:8px;padding:7px 12px;border-radius:999px;background:var(--primary-soft);color:var(--primary);font-size:13px;font-weight:700;margin-bottom:14px}
.gradient-bg{background:radial-gradient(circle at 12% 16%,rgba(41,128,254,.14),transparent 30%),radial-gradient(circle at 80% 8%,rgba(41,128,254,.09),transparent 28%),#fff}
.site-header{position:sticky;top:0;z-index:50;background:rgba(255,255,255,.92);backdrop-filter:blur(18px);border-bottom:1px solid rgba(229,234,242,.82)}
.header-inner{width:min(1180px,calc(100% - 28px));margin:0 auto;min-height:72px;display:flex;align-items:center;justify-content:space-between;gap:16px}
.brand{display:flex;align-items:center;gap:10px;font-weight:800;color:var(--ink);letter-spacing:.01em}
.logo{width:38px;height:38px;object-fit:contain;border-radius:12px}
.nav-toggle{display:none}
.nav-toggle-label{width:42px;height:42px;border:1px solid var(--line);border-radius:14px;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:5px;background:#fff}
.nav-toggle-label span{display:block;width:18px;height:2px;background:var(--ink);border-radius:9px}
.site-nav{display:none;position:absolute;left:14px;right:14px;top:78px;background:#fff;border:1px solid var(--line);border-radius:22px;padding:12px;box-shadow:var(--shadow)}
.site-nav a{display:block;padding:12px 14px;border-radius:14px;color:var(--deep);font-size:15px}
.site-nav a:hover{background:var(--primary-soft);color:var(--primary)}
.nav-toggle:checked ~ .site-nav{display:block}
.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 12px 26px rgba(41,128,254,.24);transition:.22s ease;border:0;cursor:pointer;white-space:nowrap}
.download-btn:hover{transform:translateY(-2px);box-shadow:0 18px 34px rgba(41,128,254,.28)}
.link-arrow{display:inline-flex;align-items:center;gap:6px;color:var(--primary);font-weight:800;margin-top:10px}
.link-arrow::after{content:"→";font-weight:900}
.web3-hero{padding:42px 0 28px;position:relative;overflow:hidden}
.hero-grid{display:grid;gap:28px;align-items:center}
.hero-copy h1{font-size:clamp(36px,9vw,66px);line-height:1.05;letter-spacing:-.04em;margin:0 0 18px;color:var(--ink)}
.hero-copy p{font-size:18px;color:var(--muted);margin:0 0 24px;max-width:640px}
.security-tags{display:flex;flex-wrap:wrap;gap:10px;margin-top:18px}
.security-tags span{border:1px solid var(--line);background:#fff;border-radius:999px;padding:8px 12px;font-size:13px;color:var(--deep)}
.hero-visual{position:relative;background:linear-gradient(145deg,#FFFFFF,#EFF6FF);border:1px solid var(--line);border-radius:32px;padding:18px;box-shadow:var(--shadow);min-height:380px;display:grid;place-items:center;overflow:hidden}
.hero-visual::before{content:"";position:absolute;inset:32px;border:1px dashed rgba(41,128,254,.25);border-radius:28px}
.hero-visual img{position:relative;max-height:360px;margin:auto;filter:drop-shadow(0 22px 40px rgba(22,47,86,.16))}
.float-card{position:absolute;background:rgba(255,255,255,.92);border:1px solid var(--line);box-shadow:0 12px 28px rgba(31,67,118,.1);border-radius:18px;padding:10px 12px;font-size:13px;font-weight:800;color:var(--deep)}
.float-card small{display:block;color:var(--primary);font-size:11px;font-weight:900;letter-spacing:.05em}
.fc-1{left:18px;top:28px}.fc-2{right:18px;top:78px}.fc-3{left:24px;bottom:74px}.fc-4{right:24px;bottom:28px}
.ecosystem-nav,.service-index{padding:32px 0}
.ecosystem-grid,.service-grid,.category-grid{display:grid;gap:16px}
.ecosystem-card,.service-card,.category-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:22px;box-shadow:0 12px 32px rgba(30,70,120,.06)}
.ecosystem-card .tag,.service-card .tag{display:inline-flex;border-radius:999px;background:var(--primary-soft);color:var(--primary);font-size:12px;font-weight:800;padding:5px 10px;margin-bottom:12px}
.ecosystem-card h3,.service-card h3,.category-card h3{margin:0 0 8px;font-size:20px;color:var(--ink)}
.ecosystem-card p,.service-card p,.category-card p{margin:0;color:var(--muted)}
.web3-section,.hardware-wallet-section,.digital-assets-section,.swap-section,.privacy-section,.submit-chain-section,.developer-center-section,.content-split{display:grid;gap:22px;align-items:center}
.feature-panel{background:#fff;border:1px solid var(--line);border-radius:30px;padding:28px;box-shadow:var(--shadow)}
.feature-panel.alt{background:linear-gradient(160deg,#F8FBFF,#FFFFFF)}
.feature-panel h2{margin:0 0 12px;font-size:clamp(26px,5vw,40px);line-height:1.16}
.feature-panel p{color:var(--muted);margin:0 0 16px}
.feature-image{border:1px solid var(--line);background:linear-gradient(145deg,#fff,#F1F6FF);border-radius:30px;padding:20px;box-shadow:var(--shadow);display:grid;place-items:center;min-height:260px}
.feature-image img{max-height:330px;object-fit:contain}
.check-list,.data-list{list-style:none;padding:0;margin:16px 0 0;display:grid;gap:10px}
.check-list li,.data-list li{padding:12px 14px;border-radius:16px;background:var(--gray);color:var(--deep);border:1px solid var(--line)}
.check-list li::before{content:"✓";color:var(--primary);font-weight:900;margin-right:8px}
.privacy-section .boundary-grid{display:grid;gap:14px;margin-top:16px}
.boundary-card{border:1px solid var(--line);background:#fff;border-radius:20px;padding:18px}
.boundary-card strong{display:block;color:var(--ink);margin-bottom:6px}
.submit-chain-section{background:linear-gradient(135deg,#F7FAFF,#FFFFFF);border:1px solid var(--line);border-radius:32px;padding:26px}
.submit-stack{display:grid;gap:14px}
.submit-item{background:#fff;border:1px solid var(--line);border-radius:20px;padding:18px}
.developer-center-section{background:#fff;border:1px solid var(--line);border-radius:32px;padding:26px;box-shadow:var(--shadow)}
.code-panel{background:#182235;color:#DDEBFF;border-radius:24px;padding:22px;overflow:hidden;border:1px solid rgba(255,255,255,.08);box-shadow:inset 0 1px 0 rgba(255,255,255,.05)}
.code-panel pre{margin:0;white-space:pre-wrap;font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;font-size:14px;line-height:1.7}
.code-panel b{color:#82B7FF}
.safety-panel{background:linear-gradient(135deg,#F2F7FF,#FFFFFF);border:1px solid var(--line);border-radius:28px;padding:24px}
.process-steps{display:grid;gap:16px;counter-reset:step}
.step-card{position:relative;background:#fff;border:1px solid var(--line);border-radius:24px;padding:22px;box-shadow:0 10px 26px rgba(30,70,120,.05)}
.step-card::before{counter-increment:step;content:counter(step, decimal-leading-zero);display:inline-flex;align-items:center;justify-content:center;width:40px;height:40px;border-radius:14px;background:var(--primary);color:#fff;font-weight:900;margin-bottom:12px}
.step-card h3{margin:0 0 8px}.step-card p{margin:0;color:var(--muted)}
.risk-grid{display:grid;gap:16px}
.risk-card{background:#fff;border:1px solid var(--line);border-left:4px solid var(--primary);border-radius:22px;padding:20px;box-shadow:0 10px 24px rgba(30,70,120,.05)}
.risk-card h3{margin:0 0 8px}.risk-card p{margin:0 0 8px;color:var(--muted)}
.faq-list{display:grid;gap:14px}
.faq-item{background:#fff;border:1px solid var(--line);border-radius:22px;padding:20px;box-shadow:0 10px 24px rgba(30,70,120,.05)}
.faq-item h3{margin:0 0 8px;font-size:18px}.faq-item p{margin:0;color:var(--muted)}
.cta-section{margin:48px auto 72px;width:min(1120px,calc(100% - 32px));text-align:center;background:radial-gradient(circle at 30% 10%,rgba(41,128,254,.14),transparent 32%),linear-gradient(135deg,#F1F7FF,#FFFFFF);border:1px solid var(--line);border-radius:34px;padding:42px 22px;box-shadow:var(--shadow)}
.cta-section h2{font-size:clamp(28px,5vw,44px);line-height:1.2;margin:0 0 12px}.cta-section p{color:var(--muted);margin:0 auto 22px;max-width:720px}
.page-hero{padding:42px 0 26px;background:radial-gradient(circle at 20% 10%,rgba(41,128,254,.11),transparent 34%),#fff;border-bottom:1px solid var(--line)}
.page-hero h1{font-size:clamp(34px,7vw,56px);line-height:1.08;margin:0 0 14px;letter-spacing:-.03em}
.page-hero p{color:var(--muted);font-size:18px;margin:0;max-width:760px}
.content-layout{display:grid;gap:22px;padding:40px 0 72px}
.article-card{background:#fff;border:1px solid var(--line);border-radius:30px;padding:26px;box-shadow:var(--shadow)}
.article-card h2{margin:0 0 12px;font-size:28px}.article-card p{color:var(--muted);margin:0 0 16px}.article-card p:last-child{margin-bottom:0}
.side-panel{background:linear-gradient(160deg,#F6FAFF,#FFFFFF);border:1px solid var(--line);border-radius:26px;padding:22px;height:max-content;position:relative}
.side-panel h3{margin:0 0 12px}.side-panel ul{padding-left:18px;color:var(--muted);margin:0}.side-panel li{margin:8px 0}
.notice{border:1px solid var(--line);border-radius:22px;padding:20px;background:var(--primary-soft);color:var(--deep);margin:18px 0}
.page-actions{margin-top:24px}
.download-steps{display:grid;gap:14px;margin-top:20px}
.download-step{background:#fff;border:1px solid var(--line);border-radius:22px;padding:18px}.download-step strong{color:var(--primary);display:block;margin-bottom:5px}
.site-footer{background:#fff;border-top:1px solid var(--line);padding:44px 0 0;color:var(--muted)}
.footer-grid{display:grid;gap:24px}.footer-brand{display:flex;align-items:center;gap:10px;color:var(--ink);margin-bottom:12px}.footer-brand img{width:34px;height:34px;border-radius:10px}.site-footer h3{color:var(--ink);font-size:16px;margin:0 0 10px}.site-footer a{display:block;color:var(--muted);padding:4px 0}.site-footer a:hover{color:var(--primary)}.footer-bottom{text-align:center;border-top:1px solid var(--line);margin-top:34px;padding:18px;color:#7A8699;font-size:14px}
@media (min-width:680px){
  .ecosystem-grid,.service-grid,.category-grid{grid-template-columns:repeat(2,1fr)}
  .risk-grid{grid-template-columns:repeat(2,1fr)}
  .process-steps{grid-template-columns:repeat(2,1fr)}
  .privacy-section .boundary-grid{grid-template-columns:repeat(3,1fr)}
}
@media (min-width:960px){
  .nav-toggle-label{display:none}.site-nav{display:flex;position:static;box-shadow:none;border:0;background:transparent;padding:0;gap:4px;align-items:center}.site-nav a{padding:9px 10px;font-size:14px}
  .web3-hero{padding:76px 0 44px}.hero-grid{grid-template-columns:1.05fr .95fr;gap:44px}
  .ecosystem-grid{grid-template-columns:repeat(4,1fr)}.ecosystem-card:nth-child(1),.ecosystem-card:nth-child(7){grid-column:span 2}
  .service-grid,.category-grid{grid-template-columns:repeat(3,1fr)}
  .web3-section,.hardware-wallet-section,.digital-assets-section,.swap-section,.content-split{grid-template-columns:1fr 1fr;gap:30px}
  .hardware-wallet-section .feature-image,.swap-section .feature-image{order:-1}
  .privacy-section{grid-template-columns:1fr 1.2fr}
  .submit-chain-section{grid-template-columns:1fr 1fr;padding:34px}.developer-center-section{grid-template-columns:1fr 1fr;padding:34px}
  .process-steps{grid-template-columns:repeat(3,1fr)}.risk-grid{grid-template-columns:repeat(4,1fr)}
  .content-layout{grid-template-columns:minmax(0,1fr) 330px}.article-card{padding:34px}.footer-grid{grid-template-columns:2fr 1fr 1fr}
}
@media (min-width:1120px){.site-nav a{padding:9px 13px}.section{padding:68px 0}}