:root{
  /* Calm: short, soft, no bounce, no spring, nothing that shouts. */
  --duration-instant:80ms; /* @kind other */
  --duration-fast:160ms; /* @kind other */
  --duration-base:240ms; /* @kind other */
  --duration-slow:400ms; /* @kind other */
  --duration-reveal:600ms; /* @kind other */
  --ease-standard:cubic-bezier(.4,0,.2,1); /* @kind other */
  --ease-out:cubic-bezier(.16,1,.3,1); /* @kind other */
  --ease-in-out:cubic-bezier(.45,0,.55,1); /* @kind other */
  --transition-control:background-color var(--duration-fast) var(--ease-standard),color var(--duration-fast) var(--ease-standard),border-color var(--duration-fast) var(--ease-standard),box-shadow var(--duration-fast) var(--ease-standard);
  --hover-lift:-1px;
  --press-scale:.985; /* @kind other */
}