/* The palette, shared by every page since 2026-09-06.

   Until then index.html and versions.html carried one vocabulary (--ground,
   --card, --nest, --hair, --edge, --dim, --mute) and about.html and
   quality.html carried another (--bg, --panel, --sunk, --line, --rule,
   --soft, --muted) whose values differed from the first by 1 to 7 units per
   channel on the surfaces and by 1 to 14 on the text tones, so the four
   pages were four near copies that drifted. The first version of this
   comment put the range at 2 to 7 units, which was a guess; the figures
   above come from subtracting the two :root blocks channel by channel. about.html used --dim,
   which it never defined, and quality.html wrote var(--nest,#1f2022) to reach
   a token that only the front page had. One set of names lives here, under
   the front page's names because the pipeline drawing reads them, and the
   older names are mapped onto them at the end of this file so nothing that
   still uses them breaks.

   Near-black ground, raised cards, generous radius. The three document hues
   are the dark-stepped, all-pairs-validated set (CVD dE 9.4, normal 20.9).
   Do not add a hue.

   Contrast, measured with the WCAG 2 formula on the three surfaces. --mute
   carries body text and is 6.00:1 on --ground, 5.53:1 on --card and 5.07:1
   on --nest. --faint carries the 9.5px to 10.5px mono text that names
   something stated in a stronger tone beside it, which is the uppercase
   labels, the header links, the axis ticks, the glossary aliases on the
   about page and the counts on the analytics filter pills, and is 4.43:1,
   4.08:1 and 3.74:1. These stop at 3:1 rather than 4.5:1 because each is
   letter-spaced monospace at weight 500 naming a block, an axis, a term or
   a filter whose content is printed beside it in --dim or --ink; nothing is
   stated only in --faint. Until 2026-09-06 the front page had --mute
   #7c8082 and --faint #5a5e60, which put body text at 4.46:1 on --card and
   labels at 2.49:1 on --nest, and the other two pages had --muted #7d858b
   and --faint #5b6368, which put body text at 4.46:1 on their sunk surface
   and labels at 2.73:1.
   The order ink, dim, mute, faint, wire is kept. */
:root{
  --ground:#0e0e0f;
  --card:#171819;
  --nest:#1f2022;
  --hair:#292b2d;
  --edge:#35383a;

  --ink:#f2f2f0;
  --dim:#a2a5a7;
  --mute:#8c9093;
  --faint:#747a7d;
  --wire:#43474a;

  --s1:#3987e5; --s2:#d95926; --s3:#199e70;
  --good:#3fb950; --bad:#f0685f; --warn:#d9a441;

  --sans:Inter,system-ui,-apple-system,"Segoe UI",sans-serif;
  --mono:"DM Mono",ui-monospace,"Cascadia Mono",Consolas,monospace;
  --ease:cubic-bezier(.23,1,.32,1);
}

/* Compatibility. The names about.html and quality.html used until
   2026-09-06, each pointing at the token that replaced it. Both pages were
   rewritten to the names above; this block is for anything still reading the
   old ones and can go once nothing does. */
:root{
  --bg:var(--ground); --panel:var(--card); --sunk:var(--nest);
  --line:var(--hair); --rule:var(--edge);
  --soft:var(--dim); --muted:var(--mute);
  --series-1:var(--s1); --series-2:var(--s2); --series-3:var(--s3);
  --critical:var(--bad); --serious:var(--warn);
  --ease-out:var(--ease);
}