:root {
  --dur-fast: 90ms; /* @kind other */
  --dur-base: 160ms; /* @kind other */
  --dur-slow: 320ms; /* @kind other */

  /* Snappy, slightly overshooting — arcade, not corporate */
  --ease-pop: cubic-bezier(0.34, 1.56, 0.64, 1); /* @kind other */
  --ease-out: cubic-bezier(0.2, 0.8, 0.3, 1); /* @kind other */
  --ease-step: steps(4, end); /* @kind other */

  --lift-hover: -3px;   /* translate on hover, shadow grows */
  --press-shift: 3px;   /* translate on press, shadow shrinks */
}