:root {
  /* ── Shared dark ramp — single source of truth for all pages ── */
  /* Neutral black with a faint cool cast. All warmth lives in the   */
  /* ember (#F0571E) and the teal aurora only — never in these.      */
  --char:    #141413;   /* charred black — primary background / flat surfaces */
  --char-2:  #1C1E1D;   /* raised charred surface */
  --char-3:  #272B29;   /* hairline on dark */
  --char-4:  #353A38;   /* stronger border on dark */
  --bone-2:  #ACAFAB;   /* secondary text on dark */
  --bone-3:  #7F8480;   /* tertiary / faint labels on dark */
}