:root { --primary: #B8661A; --primary-dark: #96520F; --bg: #FBF3E4;
          --surface: #FFFFFF; --text: #2B1D0E; --muted: #6E5A45; --border: #E3D2B8; }
  * { box-sizing: border-box; }
  body { margin: 0; background: var(--bg); color: var(--text);
         font: 16px/1.6 system-ui, -apple-system, "Segoe UI", Roboto, "Noto Sans", sans-serif; }
  header { background: var(--primary); color: #fff; padding: 14px 20px;
           display: flex; flex-wrap: wrap; align-items: baseline; column-gap: 10px; }
  header a { color: inherit; text-decoration: none; }
  header .brand { font-weight: 800; font-size: 20px; }
  header .tagline { opacity: .9; font-size: 14px; white-space: nowrap; }
  main { max-width: 760px; margin: 24px auto; padding: 0 16px; }
  article { background: var(--surface); border: 1px solid var(--border); border-top: 4px solid var(--primary);
            border-radius: 16px; padding: 24px; }
  h1 { margin: 0; font-size: 28px; }
  .effective { color: var(--muted); margin: 4px 0 16px; }
  h2 { font-size: 18px; margin: 28px 0 8px; }
  ul { padding-left: 22px; }
  li { margin: 4px 0; }
  li::marker { color: var(--primary); }
  nav { margin-bottom: 16px; font-size: 15px; }
  nav a, .doc-list a { color: var(--primary-dark); font-weight: 600; }
  nav span { font-weight: 700; }
  .doc-list { list-style: none; padding: 0; margin: 16px 0 0; }
  .doc-list li { margin: 0; border-top: 1px solid var(--border); }
  .doc-list a { display: block; padding: 14px 4px; font-size: 17px; }
  .muted { color: var(--muted); }
  footer { max-width: 760px; margin: 0 auto 32px; padding: 0 16px; color: var(--muted); font-size: 13px; text-align: center; }