:root { --fg:#172b4d; --muted:#626f86; --link:#0c66e4; --bg:#fff; --soft:#f7f8f9; --border:#dfe1e6; --accent:#0c66e4; }
@media (prefers-color-scheme: dark) { :root { --fg:#dee4ea; --muted:#9fadbc; --link:#579dff; --bg:#1d2125; --soft:#22272b; --border:#38414a; } }
* { box-sizing: border-box; }
body { margin:0; font:16px/1.6 -apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,sans-serif; color:var(--fg); background:var(--bg); }
a { color:var(--link); }
header, main, footer { max-width: 900px; margin: 0 auto; padding: 0 24px; }
header { display:flex; justify-content:space-between; align-items:center; padding-top:20px; padding-bottom:20px; }
header .brand { font-weight:700; font-size:20px; color:var(--fg); text-decoration:none; }
header nav a { margin-left:18px; text-decoration:none; color:var(--muted); }
header nav a:hover { color:var(--fg); }
h1 { font-size:40px; line-height:1.15; margin:40px 0 12px; }
h2 { margin-top:40px; }
.lead { font-size:20px; color:var(--muted); max-width:720px; }
.cta { display:inline-block; background:var(--accent); color:#fff; padding:10px 18px; border-radius:6px; text-decoration:none; font-weight:600; margin:16px 12px 0 0; }
.cta.secondary { background:transparent; color:var(--link); border:1px solid var(--border); }
.grid { display:grid; grid-template-columns:repeat(auto-fit,minmax(240px,1fr)); gap:16px; margin:32px 0; }
.card { border:1px solid var(--border); border-radius:8px; padding:18px; background:var(--soft); }
.card h3 { margin:0 0 6px; font-size:17px; }
.card p { margin:0; color:var(--muted); font-size:15px; }
pre { background:var(--soft); border:1px solid var(--border); padding:14px; border-radius:6px; overflow:auto; font-size:13px; }
code { font-family: ui-monospace,SFMono-Regular,Menlo,monospace; font-size:0.9em; }
table { border-collapse:collapse; width:100%; font-size:15px; }
th, td { text-align:left; border-bottom:1px solid var(--border); padding:8px; vertical-align:top; }
footer { color:var(--muted); font-size:14px; padding-top:40px; padding-bottom:40px; border-top:1px solid var(--border); margin-top:60px; }
footer a { color:var(--muted); margin-right:16px; }