:root{--bg:#f6f7fb;--card:#fff;--fg:#0f172a;--mute:#64748b;--line:#e2e8f0;--brand:#4f46e5;--brand-2:#0ea5e9}
@media (prefers-color-scheme:dark){:root{--bg:#0b0f19;--card:#111827;--fg:#e5e7eb;--mute:#94a3b8;--line:#1f2937;--brand:#818cf8;--brand-2:#38bdf8}}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{margin:0;background:var(--bg);color:var(--fg);font:16px/1.65 system-ui,-apple-system,"Segoe UI",Roboto,sans-serif}
a{color:var(--brand)}
.wrap{max-width:980px;margin:0 auto;padding:0 16px}
header{border-bottom:1px solid var(--line);background:var(--card)}
header .wrap{display:flex;align-items:center;justify-content:space-between;height:64px;gap:16px}
.logo{display:flex;align-items:center;gap:8px;font-weight:700;font-size:18px;color:var(--fg);text-decoration:none}
.logo svg{color:var(--brand)}
nav{display:flex;gap:18px;font-size:14px}
nav a{color:var(--mute);text-decoration:none}
nav a:hover{color:var(--fg)}
.hero{padding:72px 0 48px}
.hero h1{font-size:clamp(30px,5vw,46px);line-height:1.15;margin:0 0 16px;letter-spacing:-.02em}
.hero h1 span{background:linear-gradient(90deg,var(--brand),var(--brand-2));-webkit-background-clip:text;background-clip:text;color:transparent}
.hero p{font-size:18px;color:var(--mute);max-width:640px;margin:0}
.grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(240px,1fr));gap:16px;padding-bottom:64px}
.card{background:var(--card);border:1px solid var(--line);border-radius:14px;padding:22px}
.card h3{margin:0 0 6px;font-size:17px}
.card p{margin:0;color:var(--mute);font-size:15px}
.doc{padding:48px 0 72px;max-width:760px}
.doc h1{font-size:32px;margin:0 0 4px;letter-spacing:-.01em}
.doc .meta{color:var(--mute);font-size:14px;margin-bottom:32px}
.doc h2{font-size:20px;margin:32px 0 8px}
.doc ul{padding-left:20px}
footer{border-top:1px solid var(--line);padding:24px 0;color:var(--mute);font-size:14px}
footer .wrap{display:flex;flex-wrap:wrap;justify-content:space-between;gap:12px}
footer a{color:var(--mute)}
@media (max-width:560px){nav{gap:12px;font-size:13px}.hero{padding:48px 0 32px}}