:root{
  /* base palette — exact values from blockstone.nl */
  --ink:#161817;          /* near-black page ground */
  --bone:#F5EEE8;         /* warm off-white, text on dark + light panels */
  --flame:#FF4123;        /* brand orange */
  --flame-press:#E02F0F;  /* orange hover/press */
  --stone:#A8A29A;        /* secondary text on dark */
  --rule:#3A3936;         /* hairline/divider on dark (used at 2px) */
  --slate:#6F675E;        /* secondary text on light panels */
}