:root{
  --ink:#0b1220; --muted:#55617a; --line:#e6e9f0; --bg:#ffffff; --soft:#f6f8fb;
  --accent:#1b47d6; --accent-ink:#13329a; --ok:#137a4b; --warn:#9a5b00;
  --mono:ui-monospace,SFMono-Regular,"SF Mono",Menlo,Consolas,monospace;
  --sans:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,Helvetica,Arial,sans-serif;
}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{margin:0;background:var(--bg);color:var(--ink);font:16px/1.6 var(--sans);letter-spacing:-.01em}
.wrap{max-width:1060px;margin:0 auto;padding:0 24px}
a{color:var(--accent);text-decoration:none}
a:hover{text-decoration:underline}
h1,h2,h3,h4{line-height:1.2;letter-spacing:-.02em;margin:0 0 .5em}
h1{font-size:clamp(30px,4.6vw,46px);font-weight:650}
h2{font-size:26px;font-weight:620;margin-top:0}
h3{font-size:18px;font-weight:620}
p{margin:0 0 1em}
.muted{color:var(--muted)}
.small{font-size:13px}
.eyebrow{font-size:12px;font-weight:650;letter-spacing:.08em;text-transform:uppercase;color:var(--accent-ink);margin:0 0 10px}
header.top{border-bottom:1px solid var(--line);position:sticky;top:0;background:rgba(255,255,255,.92);backdrop-filter:saturate(1.2) blur(6px);z-index:5}
header.top .wrap{display:flex;align-items:center;gap:22px;height:60px}
.brand{display:flex;align-items:center;gap:9px;font-weight:650;color:var(--ink)}
.brand:hover{text-decoration:none}
.brand svg{display:block}
nav.main{margin-left:auto;display:flex;gap:20px;font-size:14.5px}
nav.main a{color:var(--ink)}
nav.main a[aria-current]{color:var(--accent-ink);font-weight:600}
.signin{font-size:13.5px;color:var(--muted);border:1px solid var(--line);border-radius:7px;padding:6px 11px}
.signin:hover{text-decoration:none;border-color:#c8cfdd}
.hero{padding:72px 0 40px}
.hero h1{max-width:16ch}
.lead{font-size:19px;color:#2a3450;max-width:62ch}
.btnrow{display:flex;gap:12px;flex-wrap:wrap;margin-top:26px}
.btn{display:inline-block;border-radius:8px;padding:11px 18px;font-weight:560;font-size:14.5px}
.btn.primary{background:var(--accent);color:#fff}
.btn.primary:hover{background:var(--accent-ink);text-decoration:none}
.btn.ghost{border:1px solid var(--line);color:var(--ink)}
.btn.ghost:hover{border-color:#c8cfdd;text-decoration:none}
section{padding:46px 0;border-top:1px solid var(--line)}
section.plain{border-top:none}
.grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.grid.two{grid-template-columns:repeat(2,1fr)}
.card{border:1px solid var(--line);border-radius:12px;padding:20px}
.card h3{margin-bottom:.35em}
.card p{font-size:14.5px;color:#39445f;margin-bottom:.6em}
.note{background:var(--soft);border:1px solid var(--line);border-radius:10px;padding:14px 16px;font-size:14px;color:#39445f}
.note.scam{border-color:#f0dcc0;background:#fff8ef}
.kvs{display:grid;grid-template-columns:160px 1fr;gap:6px 18px;font-size:14.5px}
.kvs dt{color:var(--muted)}
.kvs dd{margin:0}
code,.mono{font-family:var(--mono);font-size:13px}
pre{background:#0d1426;color:#e6ebf5;border-radius:10px;padding:16px 18px;overflow:auto;font-family:var(--mono);font-size:13px;line-height:1.5}
pre .c{color:#7f8db0}
table.spec{border-collapse:collapse;width:100%;font-size:14px}
table.spec th,table.spec td{text-align:left;padding:9px 12px;border-bottom:1px solid var(--line);vertical-align:top}
table.spec th{color:var(--muted);font-weight:600}
footer{border-top:1px solid var(--line);background:var(--soft);margin-top:10px}
footer .wrap{padding:38px 24px}
footer .cols{display:grid;grid-template-columns:2fr 1fr 1fr 1fr;gap:24px}
footer h4{font-size:12px;letter-spacing:.06em;text-transform:uppercase;color:var(--muted);margin-bottom:12px}
footer ul{list-style:none;margin:0;padding:0;font-size:14px}
footer li{margin:0 0 7px}
footer a{color:#2a3450}
footer .legal{margin-top:26px;padding-top:18px;border-top:1px solid var(--line);display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;color:var(--muted);font-size:12.5px}
.badge{display:inline-block;font-size:12px;font-weight:600;color:var(--accent-ink);background:#eef2ff;border-radius:999px;padding:3px 10px}
@media(max-width:820px){nav.main{display:none}.grid,.grid.two,footer .cols{grid-template-columns:1fr}.kvs{grid-template-columns:1fr}}