:root{--fg:#111;--muted:#666;--bg:#fff;--card:#f5f5f7;--accent:#0a66ff;--max:760px}
@media (prefers-color-scheme:dark){:root{--fg:#f2f2f2;--muted:#a0a0a0;--bg:#0f0f10;--card:#1c1c1e;--accent:#4c8dff}}
*{box-sizing:border-box}body{margin:0;font:17px/1.55 -apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,Helvetica,Arial,sans-serif;color:var(--fg);background:var(--bg)}
a{color:var(--accent)}main,header nav,footer{max-width:var(--max);margin:0 auto;padding:0 20px}
header.top{border-bottom:1px solid rgba(127,127,127,.2)}header nav{display:flex;flex-wrap:wrap;gap:16px;padding:14px 20px;font-size:15px}
header nav a{text-decoration:none}header nav .lang{margin-left:auto}
.hero{padding:40px 0 8px}.hero h1{font-size:40px;margin:0 0 8px;line-height:1.1}.tagline{font-size:21px;font-weight:600;margin:0 0 12px}
.eyebrow{text-transform:uppercase;letter-spacing:.08em;font-size:13px;color:var(--muted);margin:0}
.features{list-style:none;padding:0;display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:12px}
.features li{background:var(--card);border-radius:14px;padding:14px 16px}.features strong{display:block;margin-bottom:4px}.features span{color:var(--muted);font-size:15px}
.card{background:var(--card);border-radius:16px;padding:18px 20px;margin:20px 0}.apps{list-style:none;padding:0}
.btn{display:inline-block;background:var(--accent);color:#fff;padding:10px 18px;border-radius:12px;text-decoration:none;font-weight:600}
.badge{display:inline-block;border:1px solid var(--muted);color:var(--muted);padding:8px 14px;border-radius:12px;font-size:15px}
details{border-top:1px solid rgba(127,127,127,.2);padding:10px 0}summary{cursor:pointer;font-weight:600}
.doc h1{font-size:30px;margin:32px 0 4px}.doc h2{font-size:20px;margin:28px 0 6px}.muted{color:var(--muted);font-size:15px}
.summary{background:var(--card);border-radius:12px;padding:14px 16px}code{font-size:15px}
footer{color:var(--muted);font-size:14px;padding:32px 20px 48px}