:root { --bg: #ffffff; --fg: #1f2328; --muted: #59636e; --accent: #5b5bd6; --line: #e5e7eb; }
  @media (prefers-color-scheme: dark) { :root { --bg: #16161a; --fg: #ececf1; --muted: #a1a1aa; --accent: #8b8bf0; --line: #2e2e35; } }
  body { margin: 0; background: var(--bg); color: var(--fg); font: 16px/1.65 -apple-system, system-ui, "Segoe UI", Roboto, sans-serif; }
  main { max-width: 720px; margin: 0 auto; padding: 40px 16px 80px; }
  h1 { font-size: 30px; margin: 0 0 4px; }
  h2 { font-size: 19px; margin: 32px 0 8px; }
  .muted { color: var(--muted); }
  a { color: var(--accent); }
  table { border-collapse: collapse; width: 100%; font-size: 15px; }
  td, th { text-align: left; border-bottom: 1px solid var(--line); padding: 8px 6px; vertical-align: top; }