:root { color-scheme: light dark; }
  body {
    max-width: 820px;
    margin: 40px auto;
    padding: 0 20px;
    font-family: Inter, Segoe UI, Arial, sans-serif;
    line-height: 1.65;
    color: #1f2937;
    background: #ffffff;
  }
  h1, h2, h3 { line-height: 1.25; margin-top: 1.6em; }
  h1 { font-size: 2rem; margin-top: 0; }
  h2 { font-size: 1.35rem; border-bottom: 1px solid #e5e7eb; padding-bottom: 6px; }
  p, li { font-size: 1rem; }
  a { color: #2563eb; text-decoration: none; }
  a:hover { text-decoration: underline; }
  table {
    width: 100%;
    border-collapse: collapse;
    margin: 1rem 0;
    font-size: 0.95rem;
  }
  th, td {
    border: 1px solid #e5e7eb;
    padding: 10px 12px;
    text-align: left;
    vertical-align: top;
  }
  th { background: #f8fafc; }
  hr { border: 0; border-top: 1px solid #e5e7eb; margin: 2rem 0; }
  code {
    background: #f3f4f6;
    padding: 2px 6px;
    border-radius: 6px;
    font-family: Consolas, monospace;
  }