:root{
  --primary:#2980FE;
  --primary-soft:#EEF6FF;
  --primary-line:#D8E9FF;
  --bg:#F6F8FC;
  --bg-2:#F9FBFF;
  --white:#FFFFFF;
  --text:#1F2937;
  --muted:#667085;
  --light:#E6EAF2;
  --deep:#111827;
  --radius:24px;
  --shadow:0 18px 55px rgba(31,41,55,.08);
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang TC","Noto Sans TC","Microsoft JhengHei",Arial,sans-serif;background:var(--bg);color:var(--text);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}
.narrow{width:min(880px,calc(100% - 32px));margin:0 auto}
.section{padding:56px 0}
.section-title{font-size:clamp(1.8rem,4vw,3rem);line-height:1.15;margin:0 0 14px;color:var(--deep);letter-spacing:-.03em}
.section-lead{font-size:1.05rem;color:var(--muted);margin:0 0 24px;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);border:1px solid var(--primary-line);font-size:.9rem;font-weight:700;margin-bottom:14px}
.link-more{color:var(--primary);font-weight:800;display:inline-flex;align-items:center;margin-top:12px}
.link-more:after{content:"→";margin-left:6px}
.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 14px 30px rgba(41,128,254,.24);transition:.2s ease;border:none;cursor:pointer}
.download-btn:hover{transform:translateY(-2px);box-shadow:0 18px 42px rgba(41,128,254,.28)}
.site-header{position:sticky;top:0;z-index:50;background:rgba(255,255,255,.92);backdrop-filter:blur(18px);border-bottom:1px solid rgba(230,234,242,.82)}
.nav-shell{width:min(1180px,calc(100% - 24px));margin:0 auto;display:flex;align-items:center;justify-content:space-between;min-height:72px;gap:20px}
.brand{display:flex;align-items:center;gap:10px;font-weight:900;color:var(--deep)}
.brand-logo{width:38px;height:38px;object-fit:contain;border-radius:12px}
.brand-text{font-size:1.05rem;white-space:nowrap}
.main-nav{display:none;align-items:center;gap:6px}
.main-nav a{font-size:.94rem;color:#344054;padding:9px 11px;border-radius:999px;transition:.2s}
.main-nav a:hover{background:var(--primary-soft);color:var(--primary)}
.nav-toggle{display:inline-flex;flex-direction:column;justify-content:center;gap:5px;width:42px;height:42px;border:1px solid var(--light);border-radius:14px;background:#fff}
.nav-toggle span{display:block;width:18px;height:2px;background:var(--deep);margin:0 auto;border-radius:3px}
.main-nav.is-open{display:flex;position:absolute;top:72px;left:12px;right:12px;background:#fff;border:1px solid var(--light);border-radius:22px;padding:12px;box-shadow:var(--shadow);flex-direction:column;align-items:stretch}
.main-nav.is-open a{padding:12px 14px}
.web3-dashboard-hero{position:relative;overflow:hidden;background:linear-gradient(135deg,#fff 0%,#f7fbff 46%,#eef6ff 100%);padding:52px 0 38px;border-bottom:1px solid var(--primary-line)}
.web3-dashboard-hero:before{content:"";position:absolute;width:420px;height:420px;border-radius:50%;background:rgba(41,128,254,.12);right:-160px;top:-140px;filter:blur(2px)}
.hero-grid{position:relative;display:grid;gap:28px;align-items:center}
.hero-copy h1{font-size:clamp(2.35rem,8vw,5rem);line-height:1.02;letter-spacing:-.06em;margin:0 0 18px;color:var(--deep)}
.hero-copy p{font-size:1.08rem;color:var(--muted);margin:0 0 22px;max-width:640px}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;align-items:center;margin-bottom:20px}
.security-tags{display:flex;gap:10px;flex-wrap:wrap}
.security-tags span{background:#fff;border:1px solid var(--light);padding:8px 12px;border-radius:999px;color:#475467;font-weight:700;font-size:.9rem}
.dashboard-card{background:rgba(255,255,255,.88);border:1px solid rgba(216,233,255,.92);border-radius:30px;padding:18px;box-shadow:var(--shadow);position:relative}
.product-visual{display:grid;grid-template-columns:1fr;gap:14px;align-items:center}
.phone-frame{background:linear-gradient(180deg,#fff,#f8fbff);border:1px solid var(--light);border-radius:28px;padding:14px;display:flex;justify-content:center;min-height:260px;align-items:center}
.phone-frame img{max-height:430px;object-fit:contain;margin:auto}
.status-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:10px}
.status-card{background:#fff;border:1px solid var(--light);border-radius:18px;padding:12px;min-height:88px}
.status-card strong{display:block;color:var(--deep);font-size:.96rem;margin-bottom:4px}
.status-card span{font-size:.84rem;color:var(--muted);display:block;line-height:1.45}
.service-index{padding:52px 0;background:var(--bg)}
.service-grid{display:grid;grid-template-columns:1fr;gap:14px}
.service-card{background:#fff;border:1px solid var(--light);border-radius:22px;padding:22px;box-shadow:0 10px 30px rgba(31,41,55,.04);transition:.2s ease}
.service-card:hover{transform:translateY(-3px);border-color:var(--primary-line);box-shadow:var(--shadow)}
.service-card .service-kicker{display:inline-flex;color:var(--primary);font-size:.78rem;letter-spacing:.06em;text-transform:uppercase;font-weight:900;margin-bottom:8px}
.service-card h3{margin:0 0 8px;font-size:1.15rem;color:var(--deep)}
.service-card p{margin:0;color:var(--muted);font-size:.95rem}
.feature-panel{background:#fff;border:1px solid var(--light);border-radius:30px;padding:24px;box-shadow:var(--shadow);display:grid;gap:24px;align-items:center}
.digital-assets-hub,.web3-ecosystem-section,.hardware-wallet-section,.swap-service-section{padding:58px 0}
.web3-ecosystem-section,.swap-service-section{background:#fff}
.hardware-wallet-section{background:linear-gradient(180deg,#f9fbff,#eef6ff)}
.feature-media{background:linear-gradient(135deg,#f7fbff,#fff);border:1px solid var(--primary-line);border-radius:26px;padding:18px;min-height:260px;display:flex;align-items:center;justify-content:center}
.feature-media img{max-height:380px;object-fit:contain}
.feature-list{display:grid;gap:10px;margin:20px 0 0;padding:0;list-style:none}
.feature-list li{background:var(--bg-2);border:1px solid var(--light);border-radius:16px;padding:12px;color:#344054}
.checklist{display:grid;gap:10px;margin-top:16px}
.checklist div{display:flex;gap:10px;align-items:flex-start;background:#fff;border:1px solid var(--light);border-radius:16px;padding:12px}
.checklist div:before{content:"✓";display:inline-flex;align-items:center;justify-content:center;width:24px;height:24px;border-radius:50%;background:var(--primary-soft);color:var(--primary);font-weight:900;flex:0 0 auto}
.privacy-boundary-section{padding:56px 0;background:var(--bg)}
.boundary-panel{background:#fff;border:1px solid var(--light);border-radius:30px;padding:24px;box-shadow:var(--shadow)}
.boundary-grid{display:grid;grid-template-columns:1fr;gap:12px;margin-top:20px}
.boundary-card{border-left:4px solid var(--primary);background:var(--bg-2);border-radius:18px;padding:16px;border-top:1px solid var(--light);border-right:1px solid var(--light);border-bottom:1px solid var(--light)}
.boundary-card h3{margin:0 0 6px;color:var(--deep)}
.boundary-card p{margin:0;color:var(--muted)}
.submit-chain-section{padding:56px 0;background:#fff}
.ecosystem-access{display:grid;gap:18px}
.access-card{background:linear-gradient(135deg,#fff,#f7fbff);border:1px solid var(--primary-line);border-radius:28px;padding:24px}
.access-list{display:grid;gap:12px;margin-top:14px}
.access-list span{display:block;padding:12px 14px;border-radius:16px;background:#fff;border:1px solid var(--light);color:#344054}
.developer-center-section{padding:56px 0;background:linear-gradient(180deg,#f8fbff,#fff)}
.dev-panel{display:grid;gap:18px;background:#fff;border:1px solid var(--light);border-radius:30px;padding:24px;box-shadow:var(--shadow)}
.code-card{background:#F3F7FE;border:1px solid var(--primary-line);border-radius:24px;padding:18px;font-family:"SFMono-Regular",Consolas,"Liberation Mono",monospace;color:#26364A;overflow:auto}
.code-card span{display:block;color:var(--primary);font-weight:800;margin-bottom:8px}
.doc-links{display:grid;gap:12px}
.doc-links a{padding:14px;border:1px solid var(--light);border-radius:16px;background:#fff;color:#344054;font-weight:700}
.process-section{padding:56px 0;background:#fff}
.process-steps{display:grid;gap:14px;counter-reset:step}
.step-card{background:var(--bg-2);border:1px solid var(--light);border-radius:22px;padding:18px;position:relative}
.step-card .num{display:inline-flex;width:34px;height:34px;align-items:center;justify-content:center;border-radius:12px;background:var(--primary);color:#fff;font-weight:900;margin-bottom:10px}
.step-card h3{margin:0 0 6px;color:var(--deep)}
.step-card p{margin:0;color:var(--muted)}
.risk-section{padding:56px 0;background:var(--bg)}
.risk-grid{display:grid;gap:14px}
.risk-card{background:#fff;border:1px solid var(--light);border-left:4px solid var(--primary);border-radius:20px;padding:18px}
.risk-card h3{margin:0 0 8px;color:var(--deep)}
.risk-card p{margin:0 0 8px;color:var(--muted)}
.risk-card strong{display:block;color:#344054;margin-bottom:2px}
.faq-section{padding:56px 0;background:#fff}
.faq-list{display:grid;gap:12px}
.faq-item{background:#fff;border:1px solid var(--light);border-radius:20px;padding:18px}
.faq-item h3{margin:0 0 8px;color:var(--deep);font-size:1.05rem}
.faq-item p{margin:0;color:var(--muted)}
.cta-section{padding:62px 0;background:linear-gradient(135deg,#eef6ff,#ffffff);text-align:center;border-top:1px solid var(--primary-line)}
.cta-box{width:min(840px,calc(100% - 32px));margin:0 auto;background:#fff;border:1px solid var(--primary-line);border-radius:30px;padding:34px;box-shadow:var(--shadow)}
.cta-box h2{font-size:clamp(1.8rem,5vw,3rem);margin:0 0 12px;color:var(--deep);line-height:1.15}
.cta-box p{margin:0 auto 20px;color:var(--muted);max-width:650px}
.page-hero{padding:48px 0 28px;background:linear-gradient(135deg,#fff,#eef6ff);border-bottom:1px solid var(--primary-line)}
.page-hero h1{font-size:clamp(2.1rem,6vw,4rem);line-height:1.08;margin:0 0 14px;color:var(--deep);letter-spacing:-.045em}
.page-hero p{font-size:1.05rem;color:var(--muted);margin:0;max-width:800px}
.content-layout{display:grid;gap:20px;padding:42px 0}
.article-card{background:#fff;border:1px solid var(--light);border-radius:28px;padding:24px;box-shadow:var(--shadow)}
.article-card h2{margin:0 0 12px;font-size:1.45rem;color:var(--deep)}
.article-card p{color:#475467;margin:0 0 16px}
.article-card p:last-child{margin-bottom:0}
.side-panel{background:#fff;border:1px solid var(--light);border-radius:24px;padding:20px;align-self:start;box-shadow:0 10px 35px rgba(31,41,55,.04)}
.side-panel h3{margin:0 0 12px;color:var(--deep)}
.side-panel ul{margin:0;padding:0;list-style:none;display:grid;gap:10px}
.side-panel li{padding:10px 12px;border-radius:14px;background:var(--bg-2);color:#475467}
.page-download{margin-top:20px}
.info-grid,.category-grid{display:grid;gap:14px;margin-top:18px}
.info-card{background:var(--bg-2);border:1px solid var(--light);border-radius:20px;padding:18px}
.info-card h3{margin:0 0 8px;color:var(--deep)}
.info-card p{margin:0;color:var(--muted)}
.timeline{display:grid;gap:14px;margin-top:18px}
.timeline-item{background:#fff;border:1px solid var(--light);border-radius:20px;padding:16px;display:grid;gap:6px}
.timeline-item b{color:var(--primary)}
.download-page-card{background:#fff;border:1px solid var(--light);border-radius:30px;padding:28px;box-shadow:var(--shadow);text-align:center}
.download-steps{display:grid;gap:12px;margin:24px 0;text-align:left}
.download-steps div{padding:14px;border:1px solid var(--light);background:var(--bg-2);border-radius:16px}
.site-footer{background:#172033;color:#D0D5DD;padding:42px 0 18px}
.footer-grid{display:grid;gap:26px}
.footer-brand{font-size:1.25rem;color:#fff;font-weight:900;margin-bottom:10px}
.site-footer p{margin:0;color:#AEB8C8}
.site-footer h3{color:#fff;margin:0 0 12px;font-size:1rem}
.site-footer a{display:block;color:#D0D5DD;margin:6px 0}
.footer-bottom{text-align:center;border-top:1px solid rgba(255,255,255,.12);margin-top:28px;padding-top:18px;color:#98A2B3;font-size:.9rem}
@media (min-width:640px){
  .service-grid{grid-template-columns:repeat(2,1fr)}
  .status-grid{grid-template-columns:repeat(3,1fr)}
  .boundary-grid,.info-grid,.category-grid,.risk-grid{grid-template-columns:repeat(2,1fr)}
  .process-steps{grid-template-columns:repeat(2,1fr)}
  .footer-grid{grid-template-columns:2fr 1fr 1fr}
}
@media (min-width:900px){
  .section{padding:78px 0}
  .nav-toggle{display:none}
  .main-nav{display:flex}
  .hero-grid{grid-template-columns:1.02fr .98fr;gap:36px}
  .web3-dashboard-hero{padding:82px 0 64px}
  .product-visual{grid-template-columns:.92fr 1.08fr}
  .status-grid{grid-template-columns:1fr}
  .service-grid{grid-template-columns:repeat(4,1fr)}
  .service-card:nth-child(1),.service-card:nth-child(7){grid-column:span 2}
  .feature-panel{grid-template-columns:1.05fr .95fr;padding:34px}
  .feature-panel.reverse .feature-media{order:1}
  .feature-panel.reverse .feature-copy{order:2}
  .boundary-grid{grid-template-columns:repeat(3,1fr)}
  .ecosystem-access{grid-template-columns:1.05fr .95fr;align-items:stretch}
  .dev-panel{grid-template-columns:1fr 1fr;align-items:center}
  .process-steps{grid-template-columns:repeat(3,1fr)}
  .risk-grid{grid-template-columns:repeat(3,1fr)}
  .content-layout{grid-template-columns:minmax(0,1fr) 300px;align-items:start}
  .footer-grid{grid-template-columns:2fr 1fr 1fr}
}
@media (max-width:420px){
  .container,.narrow{width:min(100% - 24px,1120px)}
  .hero-actions{align-items:stretch}
  .download-btn{width:100%}
  .status-grid{grid-template-columns:1fr}
  .feature-panel,.article-card,.boundary-panel,.dev-panel,.access-card,.cta-box{border-radius:22px;padding:20px}
}