:root{
  --bg:#0b1020; --bg2:#0f172a; --card:#141d33; --card2:#1b2742;
  --ink:#e8edf7; --mut:#9fb0cc; --line:#243150;
  --brand:#6366f1; --brand2:#22d3ee; --ok:#34d399; --warn:#fbbf24; --bad:#f87171;
  --radius:14px; --maxw:1080px;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;font-family:-apple-system,Segoe UI,Roboto,Helvetica,Arial,sans-serif;
  background:radial-gradient(1200px 600px at 80% -10%,#1e2a4d 0%,var(--bg) 55%);color:var(--ink);line-height:1.6}
a{color:var(--brand2);text-decoration:none}
a:hover{text-decoration:underline}
.wrap{max-width:var(--maxw);margin:0 auto;padding:0 20px}
header.nav{position:sticky;top:0;z-index:20;backdrop-filter:blur(8px);
  background:rgba(11,16,32,.78);border-bottom:1px solid var(--line)}
.nav .wrap{display:flex;align-items:center;justify-content:space-between;height:62px}
.brand{display:flex;align-items:center;gap:10px;font-weight:700;letter-spacing:.2px}
.brand .dot{width:12px;height:12px;border-radius:50%;background:linear-gradient(135deg,var(--brand),var(--brand2))}
.nav nav{display:flex;gap:18px;font-size:14px;color:var(--mut)}
.nav nav a{color:var(--mut)}
.hero{padding:64px 0 36px}
.badges{display:flex;gap:8px;flex-wrap:wrap;margin-bottom:18px}
.badge{display:inline-flex;align-items:center;gap:6px;font-size:12px;font-weight:600;
  padding:5px 10px;border-radius:999px;border:1px solid var(--line);background:var(--card);color:var(--mut)}
.badge.demo{background:#fff7ed;border-color:#fed7aa;color:#7c2d12}
.badge.live{background:#ecfdf5;border-color:#a7f3d0;color:#065f46}
.badge.crypto{background:#eef2ff;border-color:#c7d2fe;color:#3730a3}
h1{font-size:clamp(28px,4vw,46px);line-height:1.1;margin:0 0 14px;letter-spacing:-.5px}
h1 .grad{background:linear-gradient(135deg,var(--brand),var(--brand2));-webkit-background-clip:text;background-clip:text;color:transparent}
.lede{font-size:18px;color:var(--mut);max-width:760px;margin:0 0 26px}
.cta{display:inline-flex;gap:12px;flex-wrap:wrap}
.btn{display:inline-block;padding:12px 20px;border-radius:10px;font-weight:600;border:1px solid transparent;cursor:pointer}
.btn.primary{background:linear-gradient(135deg,var(--brand),var(--brand2));color:#06121f}
.btn.ghost{border-color:var(--line);color:var(--ink);background:var(--card)}
.btn:hover{text-decoration:none;opacity:.92}
.grid{display:grid;gap:18px}
.cards{grid-template-columns:repeat(auto-fit,minmax(240px,1fr));margin:34px 0}
.card{background:linear-gradient(180deg,var(--card),var(--card2));border:1px solid var(--line);border-radius:var(--radius);padding:20px}
.card h3{margin:0 0 8px;font-size:17px}
.card p{margin:0;color:var(--mut);font-size:14px}
.steps{counter-reset:s;grid-template-columns:repeat(auto-fit,minmax(220px,1fr))}
.step{position:relative;padding-left:46px}
.step::before{counter-increment:s;content:counter(s);position:absolute;left:0;top:0;width:32px;height:32px;border-radius:8px;
  background:var(--card2);border:1px solid var(--line);display:flex;align-items:center;justify-content:center;font-weight:700;color:var(--brand2)}
section.block{padding:40px 0;border-top:1px solid var(--line)}
h2{font-size:26px;margin:0 0 10px;letter-spacing:-.4px}
.sub{color:var(--mut);margin:0 0 22px;max-width:760px}
.callout{background:linear-gradient(180deg,#16213c,#13203b);border:1px solid var(--line);border-left:3px solid var(--brand2);
  border-radius:12px;padding:16px 18px;color:var(--mut);font-size:14px;margin:18px 0}
.callout b{color:var(--ink)}
.demo-box{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:22px}
label{display:block;font-size:13px;color:var(--mut);margin:14px 0 6px;font-weight:600}
input,textarea,select{width:100%;padding:11px 12px;border-radius:9px;border:1px solid var(--line);
  background:#0c1426;color:var(--ink);font-size:14px;font-family:inherit}
textarea{resize:vertical;min-height:84px;font-family:monospace}
pre{background:#0a1120;border:1px solid var(--line);border-radius:10px;padding:14px;overflow:auto;font-size:13px;color:#cfe3ff}
.out{margin-top:14px;min-height:20px}
.row{display:flex;gap:10px;flex-wrap:wrap;align-items:center}
.pill{font-size:12px;padding:3px 9px;border-radius:999px;border:1px solid var(--line)}
.pill.ok{color:var(--ok);border-color:#064e3b;background:#022c22}
.pill.bad{color:var(--bad);border-color:#7f1d1d;background:#2a0f0f}
table{width:100%;border-collapse:collapse;margin-top:14px;font-size:14px}
th,td{text-align:left;padding:10px;border-bottom:1px solid var(--line)}
th{color:var(--mut);font-weight:600}
footer.foot{border-top:1px solid var(--line);padding:34px 0 60px;color:var(--mut);font-size:13px}
.foot .wrap{display:flex;justify-content:space-between;flex-wrap:wrap;gap:12px}
.mono{font-family:ui-monospace,SFMono-Regular,Menlo,monospace}
.muted{color:var(--mut)}
.pricing .plan{display:flex;flex-direction:column}
.pricing .plan.featured{border-color:var(--brand);box-shadow:0 0 0 1px var(--brand),0 12px 30px -12px rgba(99,102,241,.5)}
.pricing .plan h3{font-size:19px}
.pricing .price{margin:6px 0 4px;display:flex;align-items:baseline;gap:6px}
.pricing .amount{font-size:34px;font-weight:800;background:linear-gradient(135deg,var(--brand),var(--brand2));-webkit-background-clip:text;background-clip:text;color:transparent}
.pricing .per{color:var(--mut);font-size:14px}
.pricing .plan-desc{color:var(--mut);font-size:14px;margin:0 0 14px}
.pricing ul{list-style:none;padding:0;margin:0 0 18px;flex:1}
.pricing ul li{font-size:14px;color:var(--ink);padding:6px 0 6px 22px;position:relative;border-top:1px solid var(--line)}
.pricing ul li::before{content:"✓";position:absolute;left:0;color:var(--ok);font-weight:700}
.pricing .btn{text-align:center}
.req{color:var(--bad)}
@media (max-width:620px){.nav nav{display:none}.cta{flex-direction:column;align-items:stretch}}