:root { color-scheme: light dark; --bg: #fff; --text: #17171a; --sub: #6f6f76; --line: #e8e8ec; }
  @media (prefers-color-scheme: dark) { :root { --bg: #0e0e10; --text: #f4f4f6; --sub: #9a9aa1; --line: #26262b; } }
  * { box-sizing: border-box; }
  body { margin: 0; background: var(--bg); color: var(--text); font: 16px/1.7 -apple-system, BlinkMacSystemFont, "Apple SD Gothic Neo", "Pretendard", "Segoe UI", Roboto, sans-serif; }
  main { max-width: 680px; margin: 0 auto; padding: 56px 24px 80px; }
  h1 { font-size: 26px; margin: 0 0 4px; }
  h2 { font-size: 18px; margin: 40px 0 8px; }
  p, li { margin: 0 0 8px; }
  ul { padding-left: 20px; }
  .meta { color: var(--sub); font-size: 14px; margin-bottom: 24px; }
  hr { border: 0; border-top: 1px solid var(--line); margin: 56px 0; }
  a { color: inherit; }
  .lang { font-size: 13px; color: var(--sub); }