:root {
    --ink: #0a0a0a;
    --ink-2: #404040;
    --ink-3: #737373;
    --line: #e5e5e5;
    --line-2: #d4d4d4;
    --bg: #ffffff;
    --bg-2: #fafafa;
    --bg-3: #f5f5f5;
    --mono: ui-monospace, SFMono-Regular, "SF Mono", Menlo, Consolas, "DejaVu Sans Mono", "Liberation Mono", monospace;
    --sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Inter, Roboto, "Noto Sans", Ubuntu, "Helvetica Neue", Arial, sans-serif;
  }
  @media (prefers-color-scheme: dark) {
    :root {
      --ink: #fafafa; --ink-2: #c4c4c4; --ink-3: #8f8f8f;
      --line: #262626; --line-2: #383838;
      --bg: #0a0a0a; --bg-2: #111111; --bg-3: #161616;
    }
    html { color-scheme: dark; }
  }
  * { box-sizing: border-box; }
  @media (prefers-reduced-motion: reduce) { * { transition: none !important; } }
  body {
    margin: 0;
    background: var(--bg);
    color: var(--ink);
    font-family: var(--sans);
    font-size: 15px;
    line-height: 1.65;
    -webkit-font-smoothing: antialiased;
  }
  a { color: var(--ink); text-underline-offset: 2px; text-decoration-thickness: 1px; }
  a:hover { text-decoration-color: var(--ink-3); }
  code { font-family: var(--mono); font-size: 0.875em; }
  :focus-visible { outline: 2px solid var(--ink); outline-offset: 2px; }
  hr { border: 0; border-top: 1px solid var(--line); margin: 0; }

  .wrap { width: min(1000px, 100% - 2.5rem); margin-inline: auto; }

  /* header */
  header.top { border-bottom: 1px solid var(--line); background: var(--bg); position: sticky; top: 0; z-index: 30; }
  .top-in { display: flex; align-items: center; gap: 1rem; height: 52px; }
  .brand { display: flex; align-items: center; gap: 0.5rem; font-family: var(--mono); font-weight: 600; font-size: 0.95rem; text-decoration: none; letter-spacing: -0.01em; }
  .top nav { margin-left: auto; display: flex; gap: 1.1rem; font-size: 0.875rem; }
  .top nav a { color: var(--ink-2); text-decoration: none; }
  .top nav a:hover { color: var(--ink); text-decoration: underline; }
  @media (max-width: 700px) { .top nav a.hide-sm { display: none; } }

  /* intro */
  .intro { padding: 3.5rem 0 2.5rem; }
  h1 { font-family: var(--mono); font-size: clamp(1.9rem, 4.6vw, 2.6rem); font-weight: 600; letter-spacing: -0.035em; margin: 0; line-height: 1.1; }
  .intro p.lede { font-size: clamp(1.02rem, 2vw, 1.18rem); color: var(--ink-2); max-width: 64ch; margin: 1rem 0 0; }
  .intro p.lede b { color: var(--ink); font-weight: 600; }
  .facts { display: flex; flex-wrap: wrap; gap: 0.4rem 1.2rem; margin-top: 1.1rem; font-size: 0.85rem; color: var(--ink-3); font-family: var(--mono); }

  .install { margin-top: 1.8rem; display: flex; flex-wrap: wrap; gap: 0.6rem; align-items: center; }
  .install pre { margin: 0; flex: 1 1 300px; }
  .btn { display: inline-flex; align-items: center; gap: 0.4rem; border: 1px solid var(--ink); background: var(--ink); color: var(--bg); padding: 0.55rem 1rem; border-radius: 4px; font-size: 0.875rem; font-weight: 500; text-decoration: none; }
  .btn:hover { opacity: 0.85; }
  .btn.ghost { background: transparent; color: var(--ink); border-color: var(--line-2); }
  .btn.ghost:hover { border-color: var(--ink); opacity: 1; }

  /* sections */
  section { padding: 3.2rem 0; border-top: 1px solid var(--line); }
  h2 { font-size: 1.3rem; font-weight: 620; letter-spacing: -0.02em; margin: 0 0 0.4rem; }
  h2 .n { font-family: var(--mono); color: var(--ink-3); font-weight: 400; font-size: 0.85em; margin-right: 0.5rem; }
  section > .wrap > p { color: var(--ink-2); max-width: 70ch; margin: 0.5rem 0 0; }
  h3 { font-size: 1rem; font-weight: 620; margin: 2rem 0 0.4rem; }

  /* code */
  pre {
    font-family: var(--mono); font-size: 0.82rem; line-height: 1.6;
    background: var(--bg-2); border: 1px solid var(--line); border-radius: 6px;
    padding: 0.9rem 1rem; overflow-x: auto; margin: 1.3rem 0 0; color: var(--ink);
  }
  pre .c { color: var(--ink-3); }
  pre .p { color: var(--ink-3); }
  pre .d { color: var(--ink-3); }
  pre b { font-weight: 600; }

  /* grid of short claims */
  .claims { display: grid; grid-template-columns: repeat(auto-fit, minmax(255px, 1fr)); gap: 0 2rem; margin-top: 1.6rem; }
  .claim { padding: 1rem 0; border-top: 1px solid var(--line); }
  .claim h3 { margin: 0 0 0.25rem; font-family: var(--mono); font-size: 0.85rem; font-weight: 600; letter-spacing: -0.01em; }
  .claim p { margin: 0; font-size: 0.9rem; color: var(--ink-2); }

  /* tables */
  .tablewrap { overflow-x: auto; margin-top: 1.4rem; }
  table { width: 100%; border-collapse: collapse; font-size: 0.875rem; }
  th, td { text-align: left; padding: 0.65rem 0.9rem 0.65rem 0; border-bottom: 1px solid var(--line); vertical-align: top; }
  th { font-size: 0.72rem; letter-spacing: 0.08em; text-transform: uppercase; color: var(--ink-3); font-weight: 600; border-bottom-color: var(--line-2); }
  td:first-child { white-space: nowrap; padding-right: 1.4rem; }
  td code { background: var(--bg-3); padding: 0.1em 0.35em; border-radius: 3px; }
  .muted { color: var(--ink-3); }

  /* feature list */
  .controls { display: flex; flex-wrap: wrap; gap: 0.45rem; align-items: center; margin-top: 1.5rem; padding-bottom: 0.9rem; border-bottom: 1px solid var(--line-2); }
  .chip { font: inherit; font-size: 0.8rem; font-family: var(--mono); padding: 0.26rem 0.6rem; border: 1px solid var(--line-2); background: transparent; color: var(--ink-2); border-radius: 4px; cursor: pointer; }
  .chip:hover { border-color: var(--ink); color: var(--ink); }
  .chip[aria-pressed="true"] { background: var(--ink); border-color: var(--ink); color: var(--bg); }
  .controls .spacer { flex: 1 1 auto; }
  .controls input { font: inherit; font-size: 0.85rem; font-family: var(--mono); color: var(--ink); background: var(--bg); border: 1px solid var(--line-2); border-radius: 4px; padding: 0.3rem 0.55rem; width: 190px; }
  .controls input::placeholder { color: var(--ink-3); }
  .count { font-family: var(--mono); font-size: 0.78rem; color: var(--ink-3); }

  .features { margin: 0; }
  details.f { border-bottom: 1px solid var(--line); }
  details.f > summary {
    cursor: pointer; list-style: none; padding: 0.7rem 0; display: grid;
    grid-template-columns: 1fr auto; gap: 0.3rem 1rem; align-items: baseline;
  }
  details.f > summary::-webkit-details-marker { display: none; }
  details.f > summary:hover .f-title { text-decoration: underline; }
  .f-title { font-weight: 560; }
  .f-title::before { content: "+"; font-family: var(--mono); color: var(--ink-3); margin-right: 0.55rem; }
  details.f[open] > summary .f-title::before { content: "−"; }
  .f-key { font-family: var(--mono); font-size: 0.76rem; color: var(--ink-3); text-align: right; white-space: nowrap; }
  .f-body { padding: 0 0 1rem 1.3rem; color: var(--ink-2); max-width: 78ch; font-size: 0.92rem; }
  .f-body code { background: var(--bg-3); padding: 0.1em 0.35em; border-radius: 3px; }
  .tag { font-family: var(--mono); font-size: 0.68rem; border: 1px solid var(--line-2); padding: 0.05rem 0.35rem; border-radius: 3px; color: var(--ink-3); margin-left: 0.45rem; vertical-align: 0.1em; }
  .tag.only { border-color: var(--ink); color: var(--ink); }
  .empty { padding: 1.5rem 0; color: var(--ink-3); font-size: 0.9rem; }

  footer { border-top: 1px solid var(--line); padding: 2.2rem 0 3rem; font-size: 0.85rem; color: var(--ink-3); }
  footer a { color: var(--ink-2); }
  .fin { display: flex; flex-wrap: wrap; gap: 0.8rem 1.6rem; justify-content: space-between; }