:root{--bg:#fff;--fg:#14161a;--muted:#5b6270;--line:#e6e8ec;--accent:#1f6feb;--card:#f7f8fa}
@media (prefers-color-scheme:dark){:root{--bg:#0f1115;--fg:#eef0f3;--muted:#9aa2af;--line:#252a33;--accent:#4c8dff;--card:#161a21}}
*{box-sizing:border-box}
body{margin:0;background:var(--bg);color:var(--fg);font:16px/1.6 -apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,Helvetica,Arial,sans-serif}
a{color:var(--accent);text-decoration:none}
a:hover{text-decoration:underline}
.wrap{max-width:960px;margin:0 auto;padding:0 20px}
.nav{display:flex;justify-content:space-between;align-items:center;padding-top:20px;padding-bottom:20px;border-bottom:1px solid var(--line);flex-wrap:wrap;gap:12px}
.brand{display:flex;align-items:center;gap:10px;font-weight:700;font-size:18px;color:var(--fg)}
.nav nav a{margin-left:20px;color:var(--muted)}
.hero{padding-top:80px;padding-bottom:64px}
.eyebrow{color:var(--accent);font-weight:600;margin:0 0 12px}
h1{font-size:clamp(32px,5vw,48px);line-height:1.15;margin:0 0 16px;max-width:720px}
.lead{font-size:18px;color:var(--muted);max-width:620px;margin:0 0 28px}
.actions{display:flex;gap:12px;flex-wrap:wrap}
.btn{display:inline-block;padding:12px 20px;border-radius:8px;background:var(--accent);color:#fff;font-weight:600}
.btn:hover{text-decoration:none;opacity:.9}
.btn.ghost{background:transparent;color:var(--fg);border:1px solid var(--line)}
.block{padding-top:40px;padding-bottom:40px;border-top:1px solid var(--line)}
h2{font-size:26px;margin:0 0 12px}
.grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:16px;margin-top:16px}
.card{background:var(--card);border:1px solid var(--line);border-radius:12px;padding:20px}
.card h3{margin:0 0 6px;font-size:18px}
.card p{margin:0;color:var(--muted)}
.foot{border-top:1px solid var(--line);padding-top:24px;padding-bottom:40px;color:var(--muted);font-size:14px}
.foot p{margin:4px 0}
.doc{padding-top:48px;padding-bottom:48px;max-width:760px}
.doc h1{font-size:34px}
.doc h2{font-size:20px;margin-top:28px}