:root {
    --bg: #fbfaf8;
    --surface: #ffffff;
    --ink: #1b1a18;
    --muted: #5d5a54;
    --line: #e6e2db;
    --accent: #2f6f4f;
  }
  @media (prefers-color-scheme: dark) {
    :root {
      --bg: #14161a;
      --surface: #1c1f24;
      --ink: #f0eee9;
      --muted: #a5a29b;
      --line: #2c3037;
      --accent: #6fc294;
    }
  }
  * { box-sizing: border-box; }
  body {
    margin: 0;
    background: var(--bg);
    color: var(--ink);
    font: 16px/1.6 -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
    -webkit-font-smoothing: antialiased;
  }
  .wrap { max-width: 660px; margin: 0 auto; padding: 0 20px; }
  header { padding-block: 72px 40px; }
  .mark {
    display: inline-flex; align-items: center; justify-content: center;
    width: 48px; height: 48px; border-radius: 12px;
    background: var(--accent); color: #fff;
    font-weight: 700; font-size: 22px; letter-spacing: -0.5px;
    margin-bottom: 22px;
  }
  h1 { font-size: 34px; line-height: 1.2; margin: 0 0 12px; letter-spacing: -0.4px; }
  .lede { font-size: 19px; color: var(--muted); margin: 0; max-width: 34em; }
  section { padding-block: 28px; border-top: 1px solid var(--line); }
  h2 { font-size: 13px; text-transform: uppercase; letter-spacing: 0.08em; color: var(--muted); margin: 0 0 16px; font-weight: 600; }
  ul { margin: 0; padding: 0; list-style: none; }
  li { padding: 12px 0; border-bottom: 1px solid var(--line); }
  li:last-child { border-bottom: 0; }
  li b { display: block; font-weight: 600; margin-bottom: 2px; }
  li span { color: var(--muted); font-size: 15px; }
  .note {
    background: var(--surface); border: 1px solid var(--line);
    border-radius: 12px; padding: 18px 20px; color: var(--muted); font-size: 15px;
  }
  .note b { color: var(--ink); }
  a { color: var(--accent); }
  footer { padding-block: 32px 64px; border-top: 1px solid var(--line); color: var(--muted); font-size: 14px; }
  footer p { margin: 0 0 6px; }
  @media (max-width: 480px) {
    header { padding-block: 48px 32px; }
    h1 { font-size: 28px; }
    .lede { font-size: 17px; }
  }

  /* Policy page */
  .policy h2 { font-size: 20px; text-transform: none; letter-spacing: 0; color: var(--ink); margin: 0 0 10px; }
  .policy p { margin: 0 0 14px; }
  .policy ul { list-style: disc; padding-left: 22px; }
  .policy li { padding: 3px 0; border-bottom: 0; }
  .policy section { padding-block: 24px; }
  .updated { color: var(--muted); font-style: italic; margin: 0; }
  .back { font-size: 14px; }
  .back a { text-decoration: none; }