:root{
  /* Precise, short, no overshoot. Nothing bounces in a system of record. */
  --dur-instant:80ms; /* @kind other */
  --dur-fast:120ms; /* @kind other */
  --dur-base:180ms; /* @kind other */
  --dur-slow:240ms; /* @kind other */
  --dur-deliberate:320ms; /* @kind other */

  --ease-standard:cubic-bezier(.2,0,.2,1); /* @kind other */
  --ease-out:cubic-bezier(0,0,.2,1); /* @kind other */
  --ease-in:cubic-bezier(.4,0,1,1); /* @kind other */

  --transition-control:background-color var(--dur-fast) var(--ease-standard),border-color var(--dur-fast) var(--ease-standard),color var(--dur-fast) var(--ease-standard);
  --transition-surface:box-shadow var(--dur-base) var(--ease-standard),border-color var(--dur-base) var(--ease-standard); /* @kind other */
}
@media (prefers-reduced-motion:reduce){
  :root{
    --dur-instant:0ms; /* @kind other */
    --dur-fast:0ms; /* @kind other */
    --dur-base:0ms; /* @kind other */
    --dur-slow:0ms; /* @kind other */
    --dur-deliberate:0ms; /* @kind other */
  }
}