:root {
  --bg: #f6f7f9; --surface: #fff; --text: #16191d; --muted: #5c636c; --border: #dfe3e8; --accent: #0f766e;
  color-scheme: light;
}
@media (prefers-color-scheme: dark) {
  :root { --bg: #111417; --surface: #191d21; --text: #e8eaed; --muted: #9aa2ab; --border: #2e353c; --accent: #2dd4bf; color-scheme: dark; }
}
* { box-sizing: border-box; }
body { margin: 0; background: var(--bg); color: var(--text); font: 16px/1.6 system-ui, -apple-system, 'Segoe UI', Roboto, sans-serif; }
main { max-width: 760px; margin: 0 auto; padding: 48px 20px 80px; }
header { display: flex; align-items: center; gap: 12px; margin-bottom: 28px; }
header img { width: 40px; height: 40px; }
header a { color: inherit; text-decoration: none; font-weight: 700; font-size: 20px; }
h1 { font-size: 32px; line-height: 1.2; margin: 0 0 8px; }
h2 { font-size: 20px; margin: 36px 0 8px; }
p, li { color: var(--text); }
.muted { color: var(--muted); }
a { color: var(--accent); }
.card { background: var(--surface); border: 1px solid var(--border); border-radius: 12px; padding: 20px 24px; margin: 20px 0; }
ul { padding-left: 22px; }
table { width: 100%; border-collapse: collapse; font-size: 15px; }
th, td { text-align: left; padding: 8px 10px; border-bottom: 1px solid var(--border); vertical-align: top; }
th { color: var(--muted); font-weight: 600; }
code { font-family: ui-monospace, Menlo, Consolas, monospace; font-size: 0.92em; }
footer { margin-top: 48px; font-size: 14px; color: var(--muted); }
@media (max-width: 600px) { h1 { font-size: 26px; } th, td { padding: 6px; } }