:root{
  /* Movement always starts at a centre and expands outward. Nothing bounces. */
  --ease-calm:cubic-bezier(.22,.61,.36,1); /* @kind other */
  --ease-enter:cubic-bezier(.16,.84,.44,1); /* @kind other */
  --ease-exit:cubic-bezier(.4,0,.7,.2); /* @kind other */
  --dur-fast:160ms; /* @kind other */
  --dur-base:280ms; /* @kind other */
  --dur-slow:520ms; /* @kind other */
  --dur-reveal:900ms; /* @kind other */
  --transform-origin-brand:50% 50%; /* @kind other */
}