:root {
  --dur-flip: 0ms /* @kind other */;       /* optimistic state, apply now */
  --dur-fast: 120ms /* @kind other */;     /* hover, toggle, tap */
  --dur-base: 200ms /* @kind other */;     /* buttons, chips, tabs */
  --dur-panel: 280ms /* @kind other */;    /* sheets, slideovers, nav */
  --dur-page: 400ms /* @kind other */;     /* route / view change */
  --dur-pulse: 3600ms /* @kind other */;   /* torch glow, active only */

  --ease-enter: cubic-bezier(0, 0, .2, 1) /* @kind other */;      /* decelerate */
  --ease-exit: cubic-bezier(.4, 0, 1, 1) /* @kind other */;       /* accelerate */
  --ease-standard: cubic-bezier(.4, 0, .2, 1) /* @kind other */;  /* move */
}
@keyframes heluca-glow { 0%,100% { opacity:.5 } 50% { opacity:.95 } }
@keyframes hl-spin { to { transform: rotate(360deg) } }