:root{--ink:#152036;--muted:#5d6880;--pri:#2f6bff;--line:#e3e8f2;--bg2:#f4f7fc;--dark:#0b1328}
*{box-sizing:border-box}html{scroll-behavior:smooth}
body{margin:0;font:16px/1.75 -apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei","Noto Sans CJK SC",sans-serif;color:var(--ink);background:#fff}
a{color:var(--pri);text-decoration:none}
.wrap{max-width:1160px;margin:0 auto;padding:0 24px}
.nav{position:sticky;top:0;z-index:10;background:rgba(11,19,40,.96);backdrop-filter:blur(6px)}
.navin{display:flex;align-items:center;height:62px}
.logo{color:#fff;font-weight:800;font-size:20px;letter-spacing:.5px}
nav{margin-left:auto;display:flex;gap:6px}nav a{color:#c8d2ea;padding:6px 12px;border-radius:6px;font-size:15px}nav a:hover{background:#1c2a52;color:#fff}
#menu,.burger{display:none}
.testnet{background:#fff3dc;color:#8a5300;text-align:center;font-size:13px;padding:6px 12px;border-bottom:1px solid #f1dcb1}
.hero{background:radial-gradient(1200px 500px at 80% -10%,#1e3a8a 0,#0b1328 60%);color:#fff;padding:72px 0 80px}
.heroin{display:grid;grid-template-columns:1.05fr 1fr;gap:48px;align-items:center}
h1{font-size:46px;line-height:1.25;margin:0 0 18px;letter-spacing:.5px}
.lead{font-size:18px;color:#c9d4ee;max-width:620px}.lead.small{font-size:16px;color:var(--muted)}
.cta{margin:28px 0}.btn{display:inline-block;background:var(--pri);color:#fff;padding:11px 22px;border-radius:8px;font-weight:600;margin-right:10px}.btn:hover{background:#1f53d6}
.btn.ghost{background:transparent;border:1px solid #4c5f94}.btn.small{padding:7px 14px;font-size:14px;margin-top:6px}
.facts{list-style:none;padding:0;margin:0;display:flex;gap:36px}.facts b{display:block;font-size:24px}.facts span{color:#9fb0d6;font-size:13px}
.shot{width:100%;border-radius:12px;box-shadow:0 20px 50px rgba(0,0,0,.35);border:1px solid rgba(255,255,255,.08)}
.sec{padding:80px 0}.sec.alt{background:var(--bg2)}
h2{font-size:32px;margin:0 0 28px}
.cards{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.card{background:#fff;border:1px solid var(--line);border-radius:14px;padding:24px;box-shadow:0 2px 10px rgba(20,40,90,.04)}
.card h3{margin:6px 0 8px;font-size:19px}.card p{color:var(--muted);margin:0;font-size:15px}
.card.flat{box-shadow:none;margin-bottom:20px}
.ic{width:46px;height:46px;border-radius:12px;background:#eaf0ff;color:var(--pri);display:flex;align-items:center;justify-content:center;font-weight:800}
.arch{display:flex;flex-direction:column;gap:10px;margin-bottom:40px}
.layer{display:grid;grid-template-columns:110px 1fr;background:#fff;border:1px solid var(--line);border-left:4px solid var(--pri);border-radius:10px;padding:14px 18px}.layer span{color:var(--muted)}
.two{display:grid;grid-template-columns:1fr 1fr;gap:24px}
figure{margin:0}figcaption{color:var(--muted);font-size:14px;margin-top:10px;text-align:center}
.two .shot{box-shadow:0 10px 30px rgba(20,40,90,.15)}
table{width:100%;border-collapse:collapse}td{padding:9px 6px;border-bottom:1px solid var(--line);font-size:15px;vertical-align:top}td:first-child{color:var(--muted);width:38%}
.split{display:flex;border-radius:10px;overflow:hidden;margin:12px 0 16px;color:#fff;font-weight:600;font-size:14px}
.seg{padding:12px;text-align:center}.seg.m{flex:50;background:#2f6bff}.seg.f{flex:30;background:#5b8cff}.seg.k{flex:20;background:#93b2ff}
.card.flat p{color:var(--ink);font-size:15px}
.road{list-style:none;padding:0;margin:0;border-left:2px solid #c9d6f5;margin-left:8px}
.road li{position:relative;padding:0 0 26px 28px}.road li::before{content:"";position:absolute;left:-9px;top:6px;width:16px;height:16px;border-radius:50%;background:#fff;border:3px solid #9fb4e8}
.road li.done::before{background:var(--pri);border-color:var(--pri)}.road b{display:block}.road span{color:var(--muted)}
.three{grid-template-columns:repeat(3,1fr)}
pre{background:var(--dark);color:#d7e1ff;padding:12px;border-radius:8px;font-size:13px;overflow:auto}code{background:#eef2fb;padding:1px 6px;border-radius:4px;font-size:14px}
.warnsec{background:#fff8ee}.warnsec h2{color:#8a3b00}.warnsec li{margin-bottom:8px}
.foot{background:var(--dark);color:#8f9cbd;font-size:14px;padding:26px 0;text-align:center}
@media(max-width:900px){
  h1{font-size:32px}.heroin,.two,.cards,.three{grid-template-columns:1fr}.hero{padding:44px 0}
  .burger{display:block;margin-left:auto;color:#fff;font-size:24px;cursor:pointer}
  nav{display:none;position:absolute;top:62px;left:0;right:0;background:var(--dark);flex-direction:column;padding:10px 24px}
  #menu:checked~nav{display:flex}.facts{gap:20px}.layer{grid-template-columns:1fr}
}
.note{font-size:12px!important;margin-top:8px!important}

.logo{display:inline-flex;align-items:center;gap:10px}.logo img{width:32px;height:32px;display:block}