:root { --ink:#1f2328; --muted:#57606a; --line:#d0d7de; --accent:#188038; --bg:#fff; }
* { box-sizing:border-box; } body { margin:0; font:16px/1.6 -apple-system, Segoe UI, Roboto, Arial, sans-serif; color:var(--ink); background:var(--bg); }
main { max-width:720px; margin:0 auto; padding:48px 20px 80px; } header { display:flex; justify-content:space-between; align-items:center; gap:16px; margin-bottom:40px; }
header a { color:var(--muted); text-decoration:none; margin-left:16px; } header a.brand { color:var(--ink); font-weight:700; margin:0; }
h1 { font-size:32px; line-height:1.2; margin:0 0 12px; } h2 { font-size:20px; margin:32px 0 8px; } p, li { color:var(--ink); } .lead { font-size:19px; color:var(--muted); }
.cta { display:inline-block; background:var(--accent); color:#fff; padding:12px 18px; border-radius:6px; text-decoration:none; font-weight:600; margin-top:12px; }
.grid { display:grid; grid-template-columns:repeat(auto-fit,minmax(200px,1fr)); gap:16px; margin:24px 0; } .card { border:1px solid var(--line); border-radius:8px; padding:16px; }
footer { color:var(--muted); font-size:14px; margin-top:64px; border-top:1px solid var(--line); padding-top:16px; } code { background:#f6f8fa; padding:1px 5px; border-radius:4px; }