:root{
  --primary:#2980FE;
  --primary-dark:#1368df;
  --ink:#172033;
  --muted:#647084;
  --soft:#f5f8fc;
  --soft-blue:#eef6ff;
  --line:#e3eaf4;
  --white:#ffffff;
  --panel:#fbfdff;
  --shadow:0 18px 48px rgba(41,128,254,.12);
  --radius:24px;
}
*{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%,#f8fbff 45%,#ffffff 100%);line-height:1.7;overflow-x:hidden}
a{color:inherit;text-decoration:none}
img{max-width:100%;height:auto;display:block}
.container{width:min(1160px,calc(100% - 32px));margin:0 auto}
.site-header{position:sticky;top:0;z-index:50;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:18px}
.logo{display:flex;align-items:center;gap:10px;font-weight:800;font-size:20px;color:var(--ink)}
.logo img{width:38px;height:38px;border-radius:12px;object-fit:contain;background:var(--soft-blue)}
.site-nav{display:none;align-items:center;gap:6px;flex-wrap:wrap}
.site-nav a{font-size:14px;color:#344057;padding:9px 12px;border-radius:999px;transition:.2s ease}
.site-nav a:hover{color:var(--primary);background:var(--soft-blue)}
.nav-toggle{border:1px solid var(--line);background:var(--white);border-radius:12px;color:var(--ink);font-size:22px;width:44px;height:44px;box-shadow:0 8px 24px rgba(23,32,51,.06)}
.site-nav.is-open{display:flex;position:absolute;left:16px;right:16px;top:78px;flex-direction:column;align-items:stretch;background:#fff;border:1px solid var(--line);border-radius:20px;padding:12px;box-shadow:var(--shadow)}
.site-nav.is-open a{padding:12px 14px}
.section{padding:72px 0}
.section-tight{padding:46px 0}
.section-heading{max-width:760px;margin:0 auto 28px;text-align:center}
.section-kicker,.badge{display:inline-flex;align-items:center;gap:8px;color:var(--primary);background:var(--soft-blue);border:1px solid rgba(41,128,254,.18);padding:6px 12px;border-radius:999px;font-size:13px;font-weight:700;margin-bottom:12px}
h1,h2,h3{line-height:1.22;margin:0;color:var(--ink)}
h1{font-size:clamp(34px,7vw,62px);letter-spacing:-1.8px}
h2{font-size:clamp(28px,4vw,42px);letter-spacing:-1px}
h3{font-size:20px}
p{margin:12px 0 0;color:var(--muted)}
.lead{font-size:18px;color:#46536a;max-width:740px}
.download-btn{display:inline-flex;align-items:center;justify-content:center;min-height:48px;padding:0 24px;border-radius:999px;background:linear-gradient(135deg,var(--primary),#56a1ff);color:#fff;font-weight:800;box-shadow:0 14px 34px rgba(41,128,254,.28);border:0;transition:.2s ease;white-space:nowrap}
.download-btn:hover{transform:translateY(-2px);box-shadow:0 18px 42px rgba(41,128,254,.32)}
.text-link{display:inline-flex;margin-top:16px;color:var(--primary);font-weight:800}
.web3-hero{position:relative;padding:86px 0 52px;overflow:hidden}
.web3-hero::before{content:"";position:absolute;inset:-160px -160px auto auto;width:520px;height:520px;background:radial-gradient(circle,rgba(41,128,254,.22),rgba(41,128,254,0) 68%);pointer-events:none}
.web3-hero::after{content:"";position:absolute;left:-160px;bottom:-200px;width:440px;height:440px;background:radial-gradient(circle,rgba(41,128,254,.12),rgba(41,128,254,0) 70%);pointer-events:none}
.hero-grid{display:grid;gap:34px;align-items:center;position:relative;z-index:1}
.hero-copy{background:rgba(255,255,255,.66);border:1px solid rgba(227,234,244,.8);border-radius:32px;padding:28px;box-shadow:0 16px 48px rgba(23,32,51,.06)}
.hero-actions{margin-top:24px;display:flex;align-items:center;gap:14px;flex-wrap:wrap}
.security-tags,.mini-tags{display:flex;flex-wrap:wrap;gap:10px;margin-top:22px}
.security-tags span,.mini-tags span{display:inline-flex;align-items:center;border:1px solid var(--line);background:var(--white);color:#40506b;border-radius:999px;padding:8px 12px;font-size:13px;font-weight:700}
.hero-visual{position:relative;border-radius:34px;background:linear-gradient(145deg,#f7fbff,#ffffff);border:1px solid var(--line);box-shadow:var(--shadow);padding:28px;min-height:420px;overflow:hidden}
.hero-visual::before{content:"";position:absolute;inset:18px;border-radius:28px;border:1px dashed rgba(41,128,254,.24)}
.hero-phone{position:relative;z-index:2;width:min(330px,80%);margin:26px auto 18px;filter:drop-shadow(0 28px 36px rgba(23,32,51,.16))}
.floating-card{position:relative;z-index:3;background:rgba(255,255,255,.92);border:1px solid var(--line);border-radius:18px;padding:12px 14px;box-shadow:0 12px 30px rgba(23,32,51,.08);font-size:13px;color:#33425d;font-weight:800;margin:10px 0}
.floating-grid{display:grid;grid-template-columns:1fr 1fr;gap:10px;margin-top:14px}
.status-line{display:flex;align-items:center;justify-content:space-between;gap:14px;background:#fff;border:1px solid var(--line);border-radius:18px;padding:12px 14px;position:relative;z-index:3}
.status-line strong{color:var(--primary)}
.ecosystem-nav{display:grid;grid-template-columns:1fr;gap:14px}
.ecosystem-card,.feature-card,.risk-card,.faq-item,.info-card{background:var(--white);border:1px solid var(--line);border-radius:var(--radius);padding:22px;box-shadow:0 12px 32px rgba(23,32,51,.05);transition:.2s ease}
.ecosystem-card:hover,.feature-card:hover{transform:translateY(-3px);box-shadow:var(--shadow)}
.ecosystem-card .tag,.feature-card .tag{display:inline-flex;color:var(--primary);font-weight:800;font-size:12px;letter-spacing:.04em;border:1px solid rgba(41,128,254,.18);background:var(--soft-blue);border-radius:999px;padding:5px 10px;margin-bottom:12px}
.service-panel{display:grid;gap:24px;align-items:center;border:1px solid var(--line);border-radius:32px;background:#fff;padding:24px;box-shadow:0 14px 44px rgba(23,32,51,.06);overflow:hidden}
.service-panel.reverse{background:linear-gradient(135deg,#f6faff,#ffffff)}
.service-panel.alt{background:var(--soft)}
.panel-image{border-radius:28px;background:linear-gradient(160deg,#f0f7ff,#ffffff);border:1px solid var(--line);padding:24px;display:flex;align-items:center;justify-content:center;min-height:260px}
.panel-image img{max-height:360px;object-fit:contain;filter:drop-shadow(0 22px 30px rgba(23,32,51,.13))}
.check-list{list-style:none;padding:0;margin:18px 0 0;display:grid;gap:10px}
.check-list li{position:relative;padding-left:28px;color:#48566d}
.check-list li::before{content:"";position:absolute;left:0;top:.65em;width:14px;height:14px;border-radius:50%;background:var(--primary);box-shadow:inset 0 0 0 4px #d9eaff}
.privacy-section,.submit-chain-section,.developer-center-section{border-radius:32px;border:1px solid var(--line);background:linear-gradient(135deg,#ffffff,#f4f9ff);padding:28px;box-shadow:0 14px 44px rgba(23,32,51,.05)}
.privacy-grid,.submit-grid,.developer-grid{display:grid;gap:18px;margin-top:20px}
.data-pill{padding:16px;border-radius:20px;background:#fff;border:1px solid var(--line)}
.code-panel{background:#152033;color:#dce8ff;border-radius:24px;padding:22px;font-family:"SFMono-Regular",Consolas,monospace;overflow:auto;box-shadow:0 20px 48px rgba(23,32,51,.12)}
.code-panel span{display:block;color:#94bfff;margin:6px 0}.code-panel strong{color:#fff}
.process-steps{display:grid;gap:14px;counter-reset:step}
.process-step{position:relative;background:#fff;border:1px solid var(--line);border-radius:24px;padding:22px 22px 22px 72px;box-shadow:0 10px 28px rgba(23,32,51,.04)}
.process-step::before{counter-increment:step;content:counter(step);position:absolute;left:20px;top:22px;width:34px;height:34px;border-radius:12px;background:var(--primary);color:#fff;display:grid;place-items:center;font-weight:900}
.risk-grid,.category-grid,.faq-grid{display:grid;gap:14px}
.risk-card{border-left:4px solid var(--primary)}
.risk-card b{display:block;color:var(--ink);font-size:18px;margin-bottom:8px}
.risk-card em{display:block;font-style:normal;color:var(--primary);font-weight:800;margin-top:12px}
.faq-item h3{font-size:18px;margin-bottom:8px}
.cta-section{padding:70px 0;background:linear-gradient(135deg,#eef6ff,#ffffff 60%,#f7fbff);border-top:1px solid var(--line);border-bottom:1px solid var(--line);text-align:center}
.cta-card{max-width:780px;margin:0 auto;background:#fff;border:1px solid var(--line);border-radius:32px;padding:34px;box-shadow:var(--shadow)}
.page-hero{padding:64px 0 28px;background:linear-gradient(180deg,#f3f8ff,#ffffff);border-bottom:1px solid var(--line)}
.page-wrap{display:grid;gap:24px;padding:42px 0 72px}
.article-card{background:#fff;border:1px solid var(--line);border-radius:30px;padding:28px;box-shadow:0 12px 36px rgba(23,32,51,.05)}
.article-card h2{font-size:28px;margin-top:26px}.article-card h2:first-child{margin-top:0}
.side-panel{background:linear-gradient(135deg,#f6faff,#fff);border:1px solid var(--line);border-radius:28px;padding:24px;align-self:start;position:sticky;top:92px}
.side-panel a{display:block;padding:10px 0;color:var(--primary);font-weight:800;border-bottom:1px solid var(--line)}
.page-actions{margin-top:24px}
.table-like{display:grid;gap:12px;margin-top:18px}.table-like div{display:grid;gap:6px;background:#fff;border:1px solid var(--line);border-radius:18px;padding:16px}.table-like strong{color:var(--ink)}
.site-footer{background:#172033;color:#dbe5f5;padding:50px 0 22px}.site-footer p{color:#aebbd0}.footer-grid{display:grid;gap:26px}.footer-brand{font-size:20px;font-weight:900;color:#fff;margin-bottom:10px}.site-footer h3{color:#fff;font-size:16px;margin-bottom:10px}.site-footer a{display:block;color:#c9d8ee;margin:8px 0}.footer-bottom{margin-top:28px;padding-top:20px;border-top:1px solid rgba(255,255,255,.12);color:#9fb0c8;font-size:14px}
@media (min-width:640px){.ecosystem-nav{grid-template-columns:repeat(2,1fr)}.risk-grid,.category-grid,.faq-grid{grid-template-columns:repeat(2,1fr)}.process-steps{grid-template-columns:repeat(2,1fr)}}
@media (min-width:900px){.nav-toggle{display:none}.site-nav{display:flex}.hero-grid{grid-template-columns:1.04fr .96fr}.hero-copy{padding:42px}.web3-hero{padding:104px 0 70px}.ecosystem-nav{grid-template-columns:repeat(4,1fr)}.ecosystem-card:nth-child(1),.ecosystem-card:nth-child(7){grid-column:span 2}.service-panel{grid-template-columns:1fr 1fr;padding:38px}.service-panel.reverse .panel-copy{order:2}.service-panel.reverse .panel-image{order:1}.privacy-grid,.submit-grid{grid-template-columns:repeat(3,1fr)}.developer-grid{grid-template-columns:1.1fr .9fr}.risk-grid{grid-template-columns:repeat(4,1fr)}.category-grid{grid-template-columns:repeat(4,1fr)}.faq-grid{grid-template-columns:repeat(2,1fr)}.process-steps{grid-template-columns:repeat(3,1fr)}.page-wrap{grid-template-columns:minmax(0,1fr) 320px}.footer-grid{grid-template-columns:2fr 1fr 1fr}.floating-card.card-a{position:absolute;left:26px;top:38px;width:180px}.floating-card.card-b{position:absolute;right:24px;top:92px;width:190px}.floating-card.card-c{position:absolute;left:36px;bottom:88px;width:188px}.floating-card.card-d{position:absolute;right:32px;bottom:38px;width:180px}.floating-grid{display:block}}
@media (min-width:1120px){.site-nav a{padding:9px 13px}.risk-grid{grid-template-columns:repeat(4,1fr)}}