:root {
  --ink: #1e2430;
  --muted: #5a6473;
  --border: #d8dce2;
  --accent: #1e3a5f;
  --page: #f4f5f7;
}
* { box-sizing: border-box; }
body { margin: 0; font-family: -apple-system, "Segoe UI", Helvetica, Arial, sans-serif; color: var(--ink); background: var(--page); }
header.doc { background: var(--accent); color: #dfe6ee; padding: 10px 18px; display: flex; align-items: center; justify-content: space-between; font-size: 0.85rem; }
header.doc .brand img { height: 22px; display: block; }
header.doc a.back { color: #dfe6ee; text-decoration: none; font-size: 0.8rem; }
header.doc a.back:hover { text-decoration: underline; }
main.doc { max-width: 700px; margin: 40px auto; background: #fff; border: 1px solid var(--border); border-radius: 4px; padding: 32px 36px; }
main.doc h1 { font-family: Georgia, "Times New Roman", serif; font-size: 1.5rem; margin-top: 0; }
main.doc p, main.doc li { font-size: 0.95rem; line-height: 1.6; }
footer.doc { max-width: 700px; margin: 0 auto 40px auto; padding: 16px 36px 0 36px; font-size: 0.8rem; color: var(--muted); border-top: 1px solid var(--border); }