:root { color-scheme: light dark; --text: #1A1D24; --muted: #4A5160; --bg: #FBFBFD; --line: #C9CED7; --accent: #2447C7; }
  @media (prefers-color-scheme: dark) { :root { --text: #E5E7EC; --muted: #B6BCC8; --bg: #121418; --line: #3F4552; --accent: #AFC0FF; } }
  body { margin: 0; background: var(--bg); color: var(--text); font: 16px/1.6 system-ui, -apple-system, "Segoe UI", Roboto, sans-serif; padding-inline: 16px; }
  main { max-width: 720px; margin: 0 auto; padding-block: 32px 64px; }
  h1 { font-size: 28px; line-height: 1.25; margin: 0 0 4px; }
  h2 { font-size: 20px; margin: 32px 0 8px; }
  p, li { color: var(--text); }
  li { margin-bottom: 6px; }
  .muted { color: var(--muted); }
  a { color: var(--accent); }
  table { border-collapse: collapse; width: 100%; font-size: 15px; }
  th, td { border-bottom: 1px solid var(--line); text-align: left; padding: 8px 6px; vertical-align: top; }
  .wrap { overflow-x: auto; }