:root { --bg:#f7f8fa; --fg:#1b1f24; --muted:#5b6470; --line:#dde1e6; --accent:#2563eb; --card:#fff; }
@media (prefers-color-scheme: dark) { :root { --bg:#101317; --fg:#e8ebef; --muted:#9aa4b1; --line:#262c33; --accent:#60a5fa; --card:#171b20; } }
* { box-sizing:border-box; }
body { margin:0; font:16px/1.6 system-ui, sans-serif; background:var(--bg); color:var(--fg); }
header, footer { padding:16px; text-align:center; }
header a { color:inherit; text-decoration:none; font-weight:700; font-size:20px; }
main { max-width:760px; margin:0 auto; padding:0 16px 48px; }
h1 { font-size:32px; line-height:1.2; }
h2 { margin-top:32px; }
a { color:var(--accent); }
.card { background:var(--card); border:1px solid var(--line); border-radius:12px; padding:20px; margin:20px 0; }
.button { display:inline-block; background:var(--accent); color:#fff; padding:12px 20px; border-radius:10px; text-decoration:none; font-weight:600; }
.button[aria-disabled=true] { opacity:.5; pointer-events:none; }
.muted, footer { color:var(--muted); font-size:14px; }
code { overflow-wrap:anywhere; }
ol li { margin:6px 0; }
table { border-collapse:collapse; width:100%; font-size:15px; }
th, td { text-align:left; vertical-align:top; padding:6px 8px; border-bottom:1px solid var(--line); }