:root {
  --bg: #fbfbfa;
  --panel: #ffffff;
  --ink: #1a1a1a;
  --ink-soft: #5b5b5b;
  --line: #e3e2df;
  --accent: #3b4cca;
  --good: #1a7f4b;
  --bad: #b03030;
  --warn: #8a6100;
  --mono: ui-monospace, SFMono-Regular, Menlo, monospace;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #14151a;
    --panel: #1b1d23;
    --ink: #ececec;
    --ink-soft: #a3a3a8;
    --line: #2e313a;
    --accent: #8fa0ff;
    --good: #5fd39a;
    --bad: #ff8080;
    --warn: #e0b055;
  }
}
* { box-sizing: border-box; }
body {
  margin: 0;
  padding: 0 16px 64px;
  background: var(--bg);
  color: var(--ink);
  font: 15px/1.55 -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
}
header, nav, main, footer { max-width: 1100px; margin: 0 auto; }
header { padding-block: 32px 8px; }
h1 { margin: 0 0 6px; font-size: 1.9rem; letter-spacing: -0.02em; }
h2 { margin: 0 0 10px; font-size: 1.15rem; }
h3 { margin: 22px 0 6px; font-size: 1rem; }
.lede { margin: 0 0 14px; color: var(--ink-soft); max-width: 62ch; }
.summary { margin: 0 0 10px; font-weight: 600; }
.meta { display: flex; flex-wrap: wrap; gap: 14px; align-items: center;
        font-size: .85rem; color: var(--ink-soft); margin: 0; }
.meta a { color: var(--accent); }
button {
  font: inherit; font-size: .85rem; padding: 4px 12px; cursor: pointer;
  background: var(--panel); color: var(--ink);
  border: 1px solid var(--line); border-radius: 6px;
}
button:hover { border-color: var(--accent); }
.tabs { display: flex; flex-wrap: wrap; gap: 6px; margin: 24px 0 0; }
.tabs button { border-radius: 6px 6px 0 0; border-bottom-color: transparent; }
.tabs button[aria-selected="true"] {
  background: var(--panel); border-color: var(--line);
  border-bottom-color: var(--panel); font-weight: 600; color: var(--accent);
}
.panel {
  background: var(--panel); border: 1px solid var(--line);
  border-radius: 0 8px 8px 8px; padding: 22px;
}
.note { color: var(--ink-soft); font-size: .88rem; max-width: 78ch; margin: 0 0 10px; }
ul.note { padding-left: 20px; }
code { font-family: var(--mono); font-size: .86em;
       background: color-mix(in srgb, var(--ink) 7%, transparent);
       padding: 1px 5px; border-radius: 4px; }
pre { overflow-x: auto; background: color-mix(in srgb, var(--ink) 6%, transparent);
      padding: 12px 14px; border-radius: 6px; }
pre code { background: none; padding: 0; }
.picker { display: inline-flex; gap: 8px; align-items: center;
          font-size: .85rem; margin-bottom: 14px; color: var(--ink-soft); }
select { font: inherit; font-size: .85rem; padding: 3px 8px;
         background: var(--panel); color: var(--ink);
         border: 1px solid var(--line); border-radius: 6px; }
.table-wrap { overflow-x: auto; }
table { border-collapse: collapse; width: 100%; font-size: .85rem; }
th, td { text-align: left; padding: 7px 11px; border-bottom: 1px solid var(--line);
         white-space: nowrap; }
th { font-weight: 600; color: var(--ink-soft); font-size: .78rem;
     text-transform: uppercase; letter-spacing: .04em;
     position: sticky; top: 0; background: var(--panel); }
td.num, th.num { text-align: right; font-family: var(--mono); }
tbody tr:hover { background: color-mix(in srgb, var(--accent) 6%, transparent); }
tr.unranked td { color: var(--ink-soft); font-style: italic; }
.pos { color: var(--bad); font-weight: 600; }   /* a positive delta is the finding */
.neg { color: var(--good); }
.flag { color: var(--warn); }
.empty { color: var(--ink-soft); padding: 28px 0; text-align: center; }
.synthetic-banner {
  background: color-mix(in srgb, var(--warn) 18%, transparent);
  border: 1px solid var(--warn); border-radius: 6px;
  padding: 8px 12px; font-size: .85rem; margin-bottom: 14px;
}
footer { margin-top: 28px; color: var(--ink-soft); font-size: .8rem; }
footer code { font-size: .75rem; }
@media (max-width: 620px) {
  body { padding: 0 12px 48px; }
  .panel { padding: 16px 12px; border-radius: 8px; }
  h1 { font-size: 1.5rem; }
}