:root{
  --primary:#2980FE;
  --primary-dark:#1769df;
  --ink:#172033;
  --text:#3a4658;
  --muted:#6c7788;
  --line:#e6ebf3;
  --soft:#f6f8fb;
  --blue-soft:#eef5ff;
  --white:#ffffff;
  --shadow:0 18px 50px rgba(38,82,145,.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;color:var(--text);background:linear-gradient(180deg,#fff 0%,#f8fbff 52%,#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:40;background:rgba(255,255,255,.92);backdrop-filter:blur(14px);border-bottom:1px solid var(--line)}
.header-inner{display:flex;align-items:center;justify-content:space-between;min-height:72px;gap:16px}
.brand,.footer-brand{display:flex;align-items:center;gap:10px;font-weight:800;color:var(--ink);letter-spacing:.2px}
.logo,.footer-brand img{width:38px;height:38px;object-fit:contain;border-radius:12px}
.site-nav{display:none;position:absolute;left:16px;right:16px;top:72px;background:var(--white);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:8px}
.site-nav a{padding:10px 12px;border-radius:14px;color:var(--muted);font-weight:700;font-size:14px}
.site-nav a.active,.site-nav a:hover{background:var(--blue-soft);color:var(--primary)}
.nav-toggle{display:inline-flex;flex-direction:column;gap:5px;width:44px;height:44px;justify-content:center;align-items:center;background:var(--soft);border:1px solid var(--line);border-radius:14px}
.nav-toggle span{width:20px;height:2px;background:var(--ink);border-radius:2px}
main{min-height:60vh}.section{padding:58px 0}.section-tight{padding:36px 0}.eyebrow,.category-badge{display:inline-flex;align-items:center;gap:8px;border:1px solid rgba(41,128,254,.18);background:var(--blue-soft);color:var(--primary);font-weight:800;border-radius:999px;padding:6px 12px;font-size:13px}.eyebrow:before,.category-badge:before{content:"";width:7px;height:7px;border-radius:50%;background:var(--primary)}
h1,h2,h3{color:var(--ink);line-height:1.25;margin:0 0 14px}h1{font-size:clamp(34px,7vw,64px);letter-spacing:-1.8px}h2{font-size:clamp(26px,4.6vw,42px);letter-spacing:-1px}h3{font-size:20px}.lead{font-size:18px;color:var(--muted);max-width:760px}.muted{color:var(--muted)}
.download-btn{display:inline-flex;align-items:center;justify-content:center;min-height:50px;padding:0 24px;border-radius:999px;background:var(--primary);color:#fff;font-weight:900;box-shadow:0 14px 34px rgba(41,128,254,.26);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 42px rgba(41,128,254,.32)}
.text-link{display:inline-flex;align-items:center;color:var(--primary);font-weight:800;margin-top:12px}.text-link:after{content:"→";margin-left:6px}.tag-row,.mini-tags{display:flex;flex-wrap:wrap;gap:10px;margin-top:20px}.tag-row span,.mini-tags span{background:#fff;border:1px solid var(--line);color:var(--muted);border-radius:999px;padding:8px 12px;font-size:13px;font-weight:700}.mini-tags span{background:var(--blue-soft);border-color:#dcecff;color:#276cce}
.web3-dashboard-hero{position:relative;overflow:hidden;padding:54px 0 44px;background:radial-gradient(circle at top left,rgba(41,128,254,.13),transparent 34%),linear-gradient(135deg,#fff 0%,#f3f8ff 100%)}.web3-dashboard-hero:after{content:"";position:absolute;width:360px;height:360px;border-radius:50%;background:rgba(41,128,254,.10);right:-150px;top:20px;filter:blur(4px)}.hero-grid{position:relative;z-index:1;display:grid;gap:28px;align-items:center}.hero-copy{background:rgba(255,255,255,.74);border:1px solid rgba(225,232,242,.86);border-radius:32px;padding:26px;box-shadow:var(--shadow)}.hero-copy .download-btn{margin-top:16px}.hero-visual{position:relative;min-height:420px;border:1px solid var(--line);border-radius:34px;background:linear-gradient(180deg,#fff,#f3f8ff);box-shadow:var(--shadow);padding:18px;overflow:hidden}.hero-device{width:min(280px,68%);margin:18px auto 0;filter:drop-shadow(0 20px 36px rgba(35,66,110,.16))}.status-card{position:absolute;background:rgba(255,255,255,.94);border:1px solid var(--line);border-radius:20px;padding:12px 14px;box-shadow:0 12px 30px rgba(30,52,84,.10);min-width:142px}.status-card strong{display:block;color:var(--ink);font-size:14px}.status-card span{font-size:12px;color:var(--muted)}.status-card:nth-of-type(1){left:14px;top:24px}.status-card:nth-of-type(2){right:14px;top:86px}.status-card:nth-of-type(3){left:20px;bottom:118px}.status-card:nth-of-type(4){right:20px;bottom:72px}.status-card:nth-of-type(5){left:50%;transform:translateX(-50%);bottom:18px}.pulse{display:inline-block;width:9px;height:9px;border-radius:50%;background:var(--primary);margin-right:6px;box-shadow:0 0 0 6px rgba(41,128,254,.12)}
.service-index{display:grid;grid-template-columns:1fr;gap:14px;margin-top:26px}.service-card,.info-card,.risk-card,.faq-item,.step-card,.page-card{background:var(--white);border:1px solid var(--line);border-radius:var(--radius);padding:22px;box-shadow:0 10px 32px rgba(23,32,51,.05)}.service-card{position:relative;overflow:hidden}.service-card:before{content:attr(data-index);position:absolute;right:18px;top:12px;font-size:42px;font-weight:900;color:rgba(41,128,254,.08)}.service-card h3{color:var(--ink)}.service-card p{margin:0;color:var(--muted)}
.split-card,.digital-assets-hub,.web3-ecosystem-section,.hardware-wallet-section,.swap-service-section,.privacy-boundary-section,.submit-chain-section,.developer-center-section{border:1px solid var(--line);border-radius:32px;padding:24px;background:var(--white);box-shadow:var(--shadow);display:grid;gap:24px;align-items:center}.digital-assets-hub{background:linear-gradient(135deg,#fff,#f2f7ff)}.web3-ecosystem-section{background:linear-gradient(135deg,#f8fbff,#fff)}.hardware-wallet-section{background:linear-gradient(135deg,#f7f9fc,#eef5ff)}.swap-service-section{background:linear-gradient(135deg,#fff,#f6f8fb)}.section-image{background:rgba(255,255,255,.66);border:1px solid var(--line);border-radius:28px;padding:18px;min-height:240px;display:grid;place-items:center}.section-image img{max-height:320px;object-fit:contain}.feature-list,.check-list{display:grid;gap:10px;padding:0;margin:18px 0 0;list-style:none}.feature-list li,.check-list li{display:flex;gap:10px;align-items:flex-start;color:var(--text)}.feature-list li:before,.check-list li:before{content:"";flex:0 0 9px;width:9px;height:9px;border-radius:50%;background:var(--primary);margin-top:10px}.privacy-grid,.submit-grid,.dev-grid,.risk-grid,.faq-grid,.category-grid{display:grid;grid-template-columns:1fr;gap:16px;margin-top:22px}.safety-panel{border:1px solid #dcecff;background:linear-gradient(135deg,#f2f7ff,#fff);border-radius:28px;padding:22px}.safety-panel h3{display:flex;align-items:center;gap:8px}.safety-panel h3:before{content:"";width:10px;height:10px;border-radius:50%;background:var(--primary)}
.submit-chain-section .page-card,.developer-center-section .page-card{box-shadow:none}.code-panel{background:#f7f9fc;border:1px solid var(--line);border-radius:24px;padding:18px;font-family:"SFMono-Regular","Consolas",monospace;color:#243149;overflow:auto}.code-panel span{color:var(--primary);font-weight:800}.process-steps{display:grid;grid-template-columns:1fr;gap:14px;margin-top:24px}.step-card{position:relative;padding-left:74px}.step-no{position:absolute;left:20px;top:22px;width:38px;height:38px;border-radius:14px;background:var(--primary);color:#fff;display:grid;place-items:center;font-weight:900}.risk-card{border-left:4px solid var(--primary)}.risk-card h3{margin-bottom:8px}.risk-card strong{display:block;color:var(--primary);margin-top:10px}.faq-item summary{cursor:pointer;font-weight:900;color:var(--ink);list-style:none}.faq-item summary::-webkit-details-marker{display:none}.faq-item p{margin:12px 0 0;color:var(--muted)}.cta-section{background:linear-gradient(135deg,#eef5ff,#fff);border:1px solid #dcecff;border-radius:32px;padding:34px;text-align:center;box-shadow:var(--shadow)}
.page-hero{padding:50px 0 30px;background:radial-gradient(circle at 10% 0%,rgba(41,128,254,.12),transparent 30%),linear-gradient(180deg,#fff,#f8fbff)}.page-layout{display:grid;grid-template-columns:1fr;gap:22px;align-items:start}.article-panel{background:var(--white);border:1px solid var(--line);border-radius:30px;padding:24px;box-shadow:var(--shadow)}.article-panel p{margin:0 0 16px}.side-panel{background:var(--blue-soft);border:1px solid #dcecff;border-radius:28px;padding:22px;position:sticky;top:96px}.side-panel a{display:block;padding:10px 0;color:var(--primary);font-weight:800;border-bottom:1px solid rgba(41,128,254,.12)}.side-panel a:last-child{border-bottom:0}.note-box{background:#f8fbff;border:1px solid var(--line);border-radius:22px;padding:18px;margin:18px 0}.about-grid{display:grid;grid-template-columns:1fr;gap:16px}.download-steps{counter-reset:download;display:grid;gap:14px;margin-top:22px}.download-step{background:#fff;border:1px solid var(--line);border-radius:22px;padding:18px;display:flex;gap:14px}.download-step:before{counter-increment:download;content:counter(download);width:34px;height:34px;border-radius:13px;background:var(--primary);color:#fff;display:grid;place-items:center;font-weight:900;flex:0 0 auto}.site-footer{background:#172033;color:#d9e1ee;margin-top:70px;padding:44px 0 22px}.footer-grid{display:grid;grid-template-columns:1fr;gap:24px}.footer-brand{color:#fff;margin-bottom:12px}.site-footer p{color:#b8c4d6;margin:0}.site-footer h3{color:#fff;font-size:16px}.site-footer a{display:block;color:#c6d2e3;margin:7px 0}.footer-bottom{display:flex;flex-direction:column;gap:8px;border-top:1px solid rgba(255,255,255,.12);margin-top:28px;padding-top:18px;color:#aab8cc;font-size:13px}
@media (min-width:640px){.service-index,.privacy-grid,.submit-grid,.dev-grid,.risk-grid,.faq-grid,.category-grid,.about-grid{grid-template-columns:repeat(2,1fr)}.process-steps{grid-template-columns:repeat(2,1fr)}.site-nav.open{grid-template-columns:repeat(3,1fr)}}
@media (min-width:900px){.container{width:min(1180px,calc(100% - 48px))}.nav-toggle{display:none}.site-nav{position:static;display:flex;align-items:center;gap:2px;background:transparent;border:0;box-shadow:none;padding:0}.site-nav a{font-size:14px;padding:10px 11px}.hero-grid{grid-template-columns:1.05fr .95fr}.hero-copy{padding:42px}.service-index{grid-template-columns:repeat(4,1fr)}.service-card:nth-child(1),.service-card:nth-child(7){grid-column:span 2}.digital-assets-hub,.web3-ecosystem-section,.hardware-wallet-section,.swap-service-section,.privacy-boundary-section,.submit-chain-section,.developer-center-section,.split-card{grid-template-columns:1fr 1fr;padding:34px}.hardware-wallet-section .section-image,.swap-service-section .section-image{order:-1}.privacy-grid,.submit-grid,.dev-grid{grid-template-columns:repeat(3,1fr)}.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-panel{padding:34px}.footer-grid{grid-template-columns:2fr 1fr 1fr}.footer-bottom{flex-direction:row;justify-content:space-between}.about-grid{grid-template-columns:repeat(3,1fr)}}
@media (min-width:1120px){.site-nav a{padding:10px 13px}.hero-visual{min-height:520px}.hero-device{width:min(360px,72%)}.status-card{padding:14px 16px}.section{padding:76px 0}}
@media (max-width:380px){.container{width:min(100% - 24px,1120px)}.hero-copy,.digital-assets-hub,.web3-ecosystem-section,.hardware-wallet-section,.swap-service-section,.privacy-boundary-section,.submit-chain-section,.developer-center-section,.cta-section,.article-panel{border-radius:24px;padding:20px}.download-btn{width:100%;padding:0 18px}.status-card{position:static;margin:8px 0;transform:none!important}.hero-visual{min-height:auto}.hero-device{width:72%;margin:0 auto 12px}.step-card{padding-left:62px}.site-nav.open{grid-template-columns:1fr}}