:root {
    --ink: #16181d;
    --ink-soft: #5b6068;
    --line: #e4e6ea;
    --bg: #fbfbfa;
    --card: #ffffff;
    --accent: #1f6f43;
    --accent-soft: #f0f6f2;
    --code-bg: #f5f6f7;
  }
  @media (prefers-color-scheme: dark) {
    :root {
      --ink: #e8e9ec; --ink-soft: #9aa0a8; --line: #2a2e35;
      --bg: #14161a; --card: #1a1d22; --accent: #6cc08a;
      --accent-soft: #1c2a22; --code-bg: #1f232a;
    }
  }
  :root[data-theme="dark"] {
    --ink: #e8e9ec; --ink-soft: #9aa0a8; --line: #2a2e35;
    --bg: #14161a; --card: #1a1d22; --accent: #6cc08a;
    --accent-soft: #1c2a22; --code-bg: #1f232a;
  }
  :root[data-theme="light"] {
    --ink: #16181d; --ink-soft: #5b6068; --line: #e4e6ea;
    --bg: #fbfbfa; --card: #ffffff; --accent: #1f6f43;
    --accent-soft: #f0f6f2; --code-bg: #f5f6f7;
  }
  * { box-sizing: border-box; }
  body {
    margin: 0; background: var(--bg); color: var(--ink);
    font: 16px/1.65 ui-sans-serif, -apple-system, "Segoe UI", Roboto, sans-serif;
    -webkit-font-smoothing: antialiased;
  }
  .wrap { max-width: 62rem; margin: 0 auto; padding: 0 1.5rem; }
  header { border-bottom: 1px solid var(--line); }
  .bar { display: flex; align-items: baseline; gap: 1.25rem; padding: 1.25rem 0; }
  .mark { font-weight: 650; letter-spacing: -0.01em; }
  .bar nav { margin-left: auto; display: flex; gap: 1.25rem; font-size: 0.925rem; }
  a { color: var(--accent); text-decoration-thickness: 1px; text-underline-offset: 2px; }
  .hero { padding: 4rem 0 3rem; }
  h1 {
    font-size: clamp(2rem, 5vw, 3.1rem); line-height: 1.12; margin: 0 0 1rem;
    letter-spacing: -0.025em; text-wrap: balance; max-width: 20ch;
  }
  .lede { font-size: 1.15rem; color: var(--ink-soft); max-width: 62ch; margin: 0 0 2rem; }
  .cta { display: flex; flex-wrap: wrap; gap: 0.75rem; }
  .btn {
    display: inline-block; padding: 0.6rem 1.1rem; border-radius: 7px;
    background: var(--accent); color: #fff; text-decoration: none; font-weight: 550;
  }
  .btn.ghost { background: transparent; color: var(--ink); border: 1px solid var(--line); }
  section { padding: 3rem 0; border-top: 1px solid var(--line); }
  h2 { font-size: 1.35rem; margin: 0 0 0.5rem; letter-spacing: -0.015em; }
  .sub { color: var(--ink-soft); max-width: 62ch; margin: 0 0 1.75rem; }
  pre {
    background: var(--code-bg); border: 1px solid var(--line); border-radius: 9px;
    padding: 1rem 1.1rem; overflow-x: auto; font-size: 0.875rem; line-height: 1.55;
    font-family: ui-monospace, SFMono-Regular, Menlo, monospace; margin: 0;
  }
  code { font-family: ui-monospace, SFMono-Regular, Menlo, monospace; font-size: 0.9em; }
  .grid { display: grid; gap: 1.25rem; grid-template-columns: repeat(auto-fit, minmax(16rem, 1fr)); }
  .card {
    background: var(--card); border: 1px solid var(--line);
    border-radius: 11px; padding: 1.25rem;
  }
  .card h3 { margin: 0 0 0.4rem; font-size: 1rem; }
  .card p { margin: 0; color: var(--ink-soft); font-size: 0.925rem; }
  .tablewrap { overflow-x: auto; }
  table { border-collapse: collapse; width: 100%; font-size: 0.925rem; }
  th, td { text-align: left; padding: 0.6rem 0.9rem 0.6rem 0; border-bottom: 1px solid var(--line); }
  th { font-weight: 600; color: var(--ink-soft); font-size: 0.8rem; text-transform: uppercase; letter-spacing: 0.04em; }
  td.num { font-variant-numeric: tabular-nums; }
  .pill {
    display: inline-block; padding: 0.1rem 0.5rem; border-radius: 999px;
    background: var(--accent-soft); color: var(--accent); font-size: 0.78rem; font-weight: 600;
  }
  .pill.grey { background: var(--code-bg); color: var(--ink-soft); }
  footer { border-top: 1px solid var(--line); padding: 2.5rem 0 3.5rem; color: var(--ink-soft); font-size: 0.9rem; }
  footer a { color: var(--ink-soft); }