:root {
  --bg: #f4f1ea; --ink: #1b1a17; --muted: #5c574e; --card: #fffdf8; --line: #d9d2c5;
  --accent: #2f5d50; --hi: #1b7f4e; --mid: #a36b12; --lo: #b42318;
  font-family: "IBM Plex Sans", "Segoe UI", system-ui, sans-serif;
}
@media (prefers-color-scheme: dark) {
  :root { --bg:#161513; --ink:#f4f1ea; --muted:#b7b0a4; --card:#221f1b; --line:#3a342c; }
}
* { box-sizing: border-box; }
html, body { margin: 0; background: var(--bg); color: var(--ink); line-height: 1.45; }
.wrap { max-width: 1200px; margin: 0 auto; padding: 1rem 1.25rem 3rem; }
nav a { margin-right: 0.85rem; color: var(--accent); }
h1 { font-size: 1.35rem; margin: 0.4rem 0; }
.sub, .muted { color: var(--muted); }
.caveats { background: var(--card); border: 1px solid var(--line); border-radius: 12px; padding: 0.85rem 1rem; }
.tiles { display: grid; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); gap: 0.75rem; }
.tile { background: var(--card); border: 1px solid var(--line); border-radius: 12px; padding: 0.85rem 1rem; }
.tile h2 { font-size: 0.85rem; margin: 0 0 0.5rem; word-break: break-all; }
.tile dl, .usage { display: grid; grid-template-columns: 1fr 1fr; gap: 0.3rem 0.8rem; margin: 0; }
dt { color: var(--muted); font-size: 0.72rem; text-transform: uppercase; }
dd { margin: 0; font-variant-numeric: tabular-nums; font-weight: 650; }
.score-hi { color: var(--hi); } .score-mid { color: var(--mid); } .score-lo { color: var(--lo); }
table { width: 100%; border-collapse: collapse; font-size: 0.88rem; }
th, td { padding: 0.4rem 0.55rem; border-bottom: 1px solid var(--line); text-align: left; vertical-align: top; }
.compare-table th { text-transform: uppercase; font-size: 0.68rem; letter-spacing: 0.04em; color: var(--muted); }
.expected-cell { background: color-mix(in srgb, var(--hi) 8%, transparent); }
.actual-cell { background: color-mix(in srgb, var(--accent) 10%, transparent); }
.diff.match { background: color-mix(in srgb, var(--hi) 14%, transparent); }
.diff.miss { background: color-mix(in srgb, var(--lo) 16%, transparent); }
.diff.invented, .diff.weight_zero, .diff.error { background: color-mix(in srgb, var(--mid) 18%, transparent); }
.diff-status { font-weight: 700; text-transform: uppercase; font-size: 0.68rem; }
.table-wrap { overflow: auto; background: var(--card); border: 1px solid var(--line); border-radius: 12px; }
details { margin: 0.6rem 0; }
pre { margin: 0; padding: 0.6rem; background: var(--bg); border-radius: 8px; overflow: auto; font-size: 0.78rem; }