:root {
  color-scheme: light;
  --bg: #eef1f5; --panel: #ffffff; --panel-2: #f7f9fc;
  --ink: #101724; --muted: #5b6675; --faint: #8a94a3;
  --line: #e2e7ee; --line-strong: #cfd6e0;
  --brand: #143a63; --brand-ink: #ffffff; --brand-soft: #e8eef6;
  --accent: #1f6feb; --field: #ffffff; --shadow: 0 1px 2px rgba(16,23,36,.06), 0 8px 24px rgba(16,23,36,.06);
  /* categorical chart slots (validated, light) */
  --danger: #b02a2a;
  --s-pi: #2a78d6; --s-tax: #eb6834; --s-ins: #1baf7a; --s-pmi: #eda100;
}
@media (prefers-color-scheme: dark) {
  :root {
    color-scheme: dark;
    --bg: #0d1117; --panel: #161b22; --panel-2: #1b222c;
    --ink: #e8edf3; --muted: #9aa5b3; --faint: #6b7684;
    --line: #262d38; --line-strong: #333c48;
    --brand: #1b60a8; --brand-ink: #ffffff; --brand-soft: #16273c;
    --accent: #4d9bff; --field: #0f141b; --shadow: 0 1px 2px rgba(0,0,0,.4), 0 8px 24px rgba(0,0,0,.35);
    --danger: #ff9a8f;
    --s-pi: #3987e5; --s-tax: #d95926; --s-ins: #199e70; --s-pmi: #c98500;
  }
}