:root { --brand: #0b7a75; --fg: #1f2933; --muted: #5b6b78; --line: #dfe5ea; --bg: #ffffff; --card: #f2f6f8; }
  @media (prefers-color-scheme: dark) { :root { --fg: #e6edf2; --muted: #9fb0bd; --line: #2a3640; --bg: #0f1720; --card: #17222c; } }
  * { box-sizing: border-box; }
  body { margin: 0; background: var(--bg); color: var(--fg); font: 16px/1.6 system-ui, -apple-system, "Segoe UI", Roboto, sans-serif; }
  main { max-width: 760px; margin: 0 auto; padding: 24px 16px 64px; }
  header { display: flex; align-items: center; gap: 12px; margin-bottom: 8px; }
  header img { width: 48px; height: 48px; }
  header a { color: inherit; text-decoration: none; font-weight: 800; font-size: 1.4rem; }
  .lang { margin-left: auto; display: flex; gap: 4px; }
  .lang button { font: inherit; font-weight: 700; font-size: 0.85rem; border: 1px solid var(--line); background: var(--card); color: var(--fg); border-radius: 999px; padding: 4px 12px; cursor: pointer; }
  .lang button[aria-pressed="true"] { background: var(--brand); color: #fff; border-color: var(--brand); }
  h1 { font-size: 1.7rem; margin: 16px 0 4px; }
  h2 { font-size: 1.15rem; margin: 28px 0 6px; color: var(--brand); }
  @media (prefers-color-scheme: dark) { h2 { color: #3cc7bd; } }
  .meta { color: var(--muted); margin: 0 0 16px; }
  .summary { background: var(--card); border-radius: 12px; padding: 12px 16px; }
  .summary ul { margin: 6px 0; padding-left: 20px; }
  table { width: 100%; border-collapse: collapse; font-size: 0.95rem; margin: 8px 0; }
  th, td { text-align: left; vertical-align: top; padding: 8px; border-bottom: 1px solid var(--line); }
  th { font-weight: 600; }
  a { color: var(--brand); }
  @media (prefers-color-scheme: dark) { a { color: #3cc7bd; } }
  .table-wrap { overflow-x: auto; }
  [lang]:not(html)[hidden] { display: none; }
  footer { margin-top: 40px; color: var(--muted); font-size: 0.9rem; }