:root{
  --duration-instant:80ms; /* @kind other */
  /* hover, press, badge changes */
  --duration-fast:140ms; /* @kind other */
  /* sheets, expanding cards */
  --duration:200ms; /* @kind other */
  /* screen transitions */
  --duration-slow: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 */
  /* No bounce, no spring, no overshoot. Motion confirms state, never entertains. */
  --press-scale:.985; /* @kind other */
  /* live-tracking dot only */
  --pulse-duration:1600ms; /* @kind other */
}