:root {
  --tg-bg: #FBF8F3;
  --tg-surface: #FFFFFF;
  --tg-text: #12161F;
  --tg-text-muted: #55606F;
  --tg-accent: #E8830C;
  --tg-accent-text: #A24B0B;
  --tg-on-accent: #12161F;
  --tg-border: #E3DCD1;
}
@media (prefers-color-scheme: dark) {
  :root {
    --tg-bg: #0E1117;
    --tg-surface: #161B24;
    --tg-text: #E9ECF2;
    --tg-text-muted: #A3ADBD;
    --tg-accent: #F5A524;
    --tg-accent-text: #F5A524;
    --tg-on-accent: #12161F;
    --tg-border: #252C38;
  }
}

:root {
  --tg-font-sans: ui-sans-serif, system-ui, -apple-system, "Segoe UI", Roboto,
                  "Helvetica Neue", Arial, sans-serif;
  --tg-font-mono: ui-monospace, SFMono-Regular, "SF Mono", Menlo, Consolas,
                  "Liberation Mono", monospace;
  --tg-measure: 68ch;
}
body { font-family: var(--tg-font-sans); font-size: 1rem; line-height: 1.6; }
.tg-result, .tg-calc-row, td.tg-num { font-family: var(--tg-font-mono); font-variant-numeric: tabular-nums; }