:root{
  --primary:#2980FE;
  --primary-soft:#EAF3FF;
  --primary-pale:#F5F9FF;
  --white:#FFFFFF;
  --gray-50:#F7F9FC;
  --gray-100:#EDF1F7;
  --gray-200:#DDE5F0;
  --gray-500:#657286;
  --gray-700:#2F3A4A;
  --gray-900:#111827;
  --shadow:0 18px 45px rgba(31,55,88,.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(--gray-700);background:linear-gradient(180deg,#fff 0%,#f7faff 42%,#fff 100%);line-height:1.75;overflow-x:hidden}
a{color:inherit;text-decoration:none}
img{max-width:100%;height:auto;display:block}
.site-header{position:sticky;top:0;z-index:50;background:rgba(255,255,255,.92);backdrop-filter:blur(18px);border-bottom:1px solid var(--gray-100)}
.header-shell{width:min(1180px,calc(100% - 32px));margin:auto;display:flex;align-items:center;justify-content:space-between;min-height:70px;gap:18px}
.brand{display:flex;align-items:center;gap:10px;font-weight:800;color:var(--gray-900);letter-spacing:.02em;white-space:nowrap}.logo-img{width:38px;height:38px;border-radius:12px}.main-nav{display:none;flex-direction:column;position:absolute;top:70px;left:16px;right:16px;background:var(--white);border:1px solid var(--gray-100);box-shadow:var(--shadow);border-radius:22px;padding:14px}.main-nav a{padding:10px 12px;border-radius:14px;color:var(--gray-500);font-size:15px}.main-nav a.active,.main-nav a:hover{color:var(--primary);background:var(--primary-soft)}.nav-toggle{display:none}.nav-toggle-label{display:grid;gap:5px;padding:8px;border:1px solid var(--gray-100);border-radius:14px}.nav-toggle-label span{width:22px;height:2px;background:var(--gray-700);border-radius:2px}.nav-toggle:checked~.main-nav{display:flex}
.page-shell,.section-shell{width:min(1180px,calc(100% - 32px));margin:auto}.section{padding:48px 0}.muted{color:var(--gray-500)}.eyebrow,.category-badge{display:inline-flex;align-items:center;gap:8px;padding:6px 12px;border-radius:999px;background:var(--primary-soft);color:var(--primary);font-weight:750;font-size:13px}.download-btn{display:inline-flex;align-items:center;justify-content:center;min-height:48px;padding:0 24px;border-radius:999px;background:var(--primary);color:var(--white);font-weight:800;box-shadow:0 14px 30px rgba(41,128,254,.22);transition:transform .2s ease,box-shadow .2s ease}.download-btn:hover{transform:translateY(-2px);box-shadow:0 18px 34px rgba(41,128,254,.28)}.link-more{display:inline-flex;color:var(--primary);font-weight:760;margin-top:12px}.pill-row{display:flex;flex-wrap:wrap;gap:10px}.pill{padding:8px 12px;border:1px solid var(--gray-100);background:var(--white);border-radius:999px;color:var(--gray-500);font-size:13px}
.web3-dashboard-hero{position:relative;overflow:hidden;padding:54px 0 42px;background:radial-gradient(circle at top right,rgba(41,128,254,.16),transparent 36%),linear-gradient(135deg,#fff 0%,#f5f9ff 100%)}.web3-dashboard-hero:before{content:"";position:absolute;inset:auto -80px 20px auto;width:260px;height:260px;border-radius:50%;background:rgba(41,128,254,.09);filter:blur(8px)}.hero-grid{display:grid;gap:28px;align-items:center;position:relative}.hero-copy h1{font-size:clamp(34px,8vw,64px);line-height:1.08;margin:16px 0;color:var(--gray-900);letter-spacing:-.04em}.hero-copy p{font-size:18px;color:var(--gray-500);margin:0 0 24px}.hero-tags{display:flex;flex-wrap:wrap;gap:10px;margin-top:20px}.hero-tags span{padding:9px 12px;border:1px solid rgba(41,128,254,.18);background:#fff;border-radius:999px;font-size:13px;color:var(--gray-700)}.hero-panel{position:relative;background:rgba(255,255,255,.82);border:1px solid var(--gray-100);border-radius:30px;box-shadow:var(--shadow);padding:18px}.phone-frame{margin:auto;max-width:300px;border-radius:30px;background:linear-gradient(180deg,#fff,#eef6ff);border:1px solid var(--gray-100);padding:14px;box-shadow:inset 0 1px 0 #fff}.status-cards{display:grid;grid-template-columns:1fr 1fr;gap:10px;margin-top:14px}.status-card{padding:12px;background:#fff;border:1px solid var(--gray-100);border-radius:18px}.status-card strong{display:block;color:var(--gray-900);font-size:14px}.status-card small{color:var(--gray-500)}
.section-head{margin-bottom:22px}.section-head h2{font-size:clamp(26px,5vw,40px);line-height:1.2;margin:10px 0;color:var(--gray-900);letter-spacing:-.025em}.section-head p{margin:0;color:var(--gray-500);max-width:780px}.service-index{display:grid;gap:14px}.service-card{background:var(--white);border:1px solid var(--gray-100);border-radius:22px;padding:20px;box-shadow:0 10px 26px rgba(31,55,88,.05)}.service-card span{display:inline-flex;color:var(--primary);font-size:13px;font-weight:800;margin-bottom:8px}.service-card h3,.info-card h3,.risk-card h3,.faq-item h3{margin:0 0 8px;color:var(--gray-900)}.service-card p,.info-card p,.risk-card p,.faq-item p{margin:0;color:var(--gray-500)}
.feature-panel{display:grid;gap:24px;align-items:center;border:1px solid var(--gray-100);border-radius:30px;padding:24px;background:#fff;box-shadow:var(--shadow)}.feature-panel.alt{background:linear-gradient(135deg,#f7faff,#fff)}.feature-panel.tint{background:linear-gradient(135deg,#f4f8ff,#eef5ff)}.feature-content h2{font-size:clamp(26px,5vw,38px);line-height:1.22;color:var(--gray-900);margin:10px 0}.feature-list{display:grid;gap:10px;margin:18px 0;padding:0;list-style:none}.feature-list li{padding-left:18px;position:relative}.feature-list li:before{content:"";position:absolute;left:0;top:.78em;width:7px;height:7px;border-radius:50%;background:var(--primary)}.feature-image{border-radius:24px;background:var(--primary-pale);border:1px solid var(--gray-100);padding:18px}.feature-image img{border-radius:20px;margin:auto;max-height:360px;object-fit:contain}.privacy-boundary-section,.submit-chain-section,.developer-center-section{border-radius:30px;border:1px solid var(--gray-100);background:#fff;padding:24px;box-shadow:var(--shadow)}.boundary-grid,.submit-grid,.developer-grid{display:grid;gap:16px}.info-card{padding:18px;border-radius:20px;background:var(--gray-50);border:1px solid var(--gray-100)}.code-panel{background:#f8fbff;border:1px solid var(--gray-100);border-radius:22px;padding:18px;font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;color:#3a485a;overflow:auto}.code-panel .line{display:block;padding:7px 0;border-bottom:1px solid #eaf0f7}.code-panel .blue{color:var(--primary);font-weight:700}.process-steps{display:grid;gap:14px}.step-card{position:relative;background:#fff;border:1px solid var(--gray-100);border-radius:22px;padding:20px}.step-number{display:inline-grid;place-items:center;width:34px;height:34px;border-radius:12px;background:var(--primary);color:#fff;font-weight:800;margin-bottom:10px}.risk-grid{display:grid;gap:14px}.risk-card{background:#fff;border:1px solid var(--gray-100);border-left:4px solid var(--primary);border-radius:20px;padding:18px}.faq-list{display:grid;gap:14px}.faq-item{background:#fff;border:1px solid var(--gray-100);border-radius:20px;padding:18px}.cta-section{margin:50px auto 70px;padding:34px 22px;border-radius:30px;background:linear-gradient(135deg,#eff6ff,#fff);border:1px solid var(--gray-100);text-align:center;box-shadow:var(--shadow)}.cta-section h2{color:var(--gray-900);margin:0 0 10px}.cta-section p{color:var(--gray-500);max-width:680px;margin:0 auto 20px}
.page-hero{padding:46px 0 20px}.page-hero-card{border:1px solid var(--gray-100);border-radius:30px;background:linear-gradient(135deg,#fff,#f5f9ff);padding:28px;box-shadow:var(--shadow)}.page-hero h1{font-size:clamp(32px,7vw,52px);line-height:1.12;margin:14px 0;color:var(--gray-900);letter-spacing:-.035em}.content-layout{display:grid;gap:22px;align-items:start;padding:28px 0 64px}.article-card{background:#fff;border:1px solid var(--gray-100);border-radius:28px;padding:24px;box-shadow:var(--shadow)}.article-card h2{color:var(--gray-900);margin:6px 0 12px}.article-card p{margin:0 0 14px}.side-panel{display:grid;gap:14px}.checklist{display:grid;gap:10px;margin:0;padding:0;list-style:none}.checklist li{background:var(--gray-50);border:1px solid var(--gray-100);border-radius:16px;padding:12px}.download-box{margin-top:22px;padding-top:20px;border-top:1px solid var(--gray-100)}.category-grid{display:grid;gap:14px}.split-cards{display:grid;gap:14px}.site-footer{background:#101827;color:#c8d1df;padding:34px 0}.footer-shell{width:min(1180px,calc(100% - 32px));margin:auto;display:grid;gap:22px}.footer-brand{display:flex;gap:12px;align-items:flex-start}.footer-logo{width:40px;height:40px;border-radius:13px}.footer-brand strong{color:#fff}.footer-brand p{margin:4px 0 0;color:#aeb9c9}.footer-links{display:flex;flex-wrap:wrap;gap:12px}.footer-links a{color:#d7e3f3;background:rgba(255,255,255,.06);padding:8px 12px;border-radius:999px}
@media (min-width:680px){.service-index{grid-template-columns:repeat(2,1fr)}.risk-grid{grid-template-columns:repeat(2,1fr)}.process-steps{grid-template-columns:repeat(2,1fr)}.category-grid{grid-template-columns:repeat(2,1fr)}.split-cards{grid-template-columns:repeat(2,1fr)}}
@media (min-width:920px){.nav-toggle-label{display:none}.main-nav{display:flex;position:static;flex-direction:row;align-items:center;background:transparent;border:0;box-shadow:none;border-radius:0;padding:0;gap:2px}.main-nav a{font-size:14px;padding:8px 10px}.hero-grid{grid-template-columns:1.02fr .98fr}.web3-dashboard-hero{padding:82px 0 64px}.service-index{grid-template-columns:repeat(4,1fr)}.service-card.wide{grid-column:span 2}.feature-panel{grid-template-columns:1fr 1fr;padding:34px}.feature-panel.reverse .feature-image{order:-1}.boundary-grid,.submit-grid,.developer-grid{grid-template-columns:1fr 1fr}.process-steps{grid-template-columns:repeat(3,1fr)}.risk-grid{grid-template-columns:repeat(3,1fr)}.content-layout{grid-template-columns:minmax(0,1fr) 330px}.article-card{padding:34px}.page-hero-card{padding:38px}.footer-shell{grid-template-columns:1fr auto;align-items:center}.status-card.floating{position:absolute}.status-card.one{right:12px;top:22px}.status-card.two{left:14px;bottom:138px}.status-card.three{right:22px;bottom:70px}}
@media (min-width:1120px){.main-nav a{padding:9px 12px}.service-index{grid-template-columns:repeat(7,1fr)}.service-card.wide{grid-column:span 2}}
@media (max-width:420px){.header-shell,.page-shell,.section-shell{width:min(100% - 24px,1180px)}.download-btn{width:100%;padding:0 18px}.page-hero-card,.article-card,.feature-panel{padding:20px}.status-cards{grid-template-columns:1fr}.service-index{grid-template-columns:1fr}.hero-copy p{font-size:16px}}