:root{--ink:#0B1530;--muted:#55607A;--line:#E3E8F2;--bg:#F7F9FD;--card:#FFFFFF;--brand:#1336E8;--brand2:#2A0F9E;--max:880px}
@media (prefers-color-scheme:dark){:root{--ink:#EEF2FF;--muted:#A3ADC6;--line:#25304A;--bg:#0A1022;--card:#121B33}}
*{box-sizing:border-box}html{-webkit-text-size-adjust:100%}
body{margin:0;background:var(--bg);color:var(--ink);font:17px/1.65 -apple-system,BlinkMacSystemFont,"SF Pro Text","Segoe UI",Roboto,sans-serif}
a{color:var(--brand)}@media (prefers-color-scheme:dark){a{color:#8FA6FF}}
header{background:linear-gradient(135deg,#0959FD,#1626C8 55%,#2A0F9E);color:#fff}
.nav{max-width:var(--max);margin:0 auto;padding:18px 20px;display:flex;align-items:center;gap:12px}
.nav img{width:34px;height:34px;border-radius:9px}.nav b{font-size:18px;letter-spacing:.2px}
.nav nav{margin-left:auto;display:flex;gap:18px}.nav nav a{color:#fff;opacity:.85;text-decoration:none;font-size:15px}.nav nav a:hover{opacity:1}
.hero{max-width:var(--max);margin:0 auto;padding:36px 20px 64px}
.hero h1{font-size:clamp(34px,6vw,54px);line-height:1.08;margin:0 0 14px;letter-spacing:-.5px}
.hero p{font-size:clamp(18px,2.4vw,21px);opacity:.9;max-width:600px;margin:0}
.badge{display:inline-block;margin-top:26px;background:#fff;color:#1336E8;font-weight:600;padding:12px 22px;border-radius:999px;text-decoration:none}
main{max-width:var(--max);margin:0 auto;padding:40px 20px 70px}
.grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(240px,1fr));gap:16px}
.card{background:var(--card);border:1px solid var(--line);border-radius:20px;padding:22px}
.card h3{margin:0 0 6px;font-size:18px}.card p{margin:0;color:var(--muted);font-size:15.5px}
h2{font-size:28px;margin:44px 0 14px;letter-spacing:-.3px}h2:first-child{margin-top:0}
.doc h2{font-size:21px;margin:34px 0 8px}.doc p,.doc li{color:var(--ink)}.doc .muted{color:var(--muted)}
footer{border-top:1px solid var(--line);color:var(--muted);font-size:14px}
footer div{max-width:var(--max);margin:0 auto;padding:24px 20px;display:flex;gap:18px;flex-wrap:wrap}
footer a{color:var(--muted)}