:root{
  --duration-instant:80ms; /* @kind other */
  --duration-fast:140ms; /* @kind other */
  --duration-base:220ms; /* @kind other */
  --duration-slow:420ms; /* @kind other */
  --duration-reveal:640ms; /* @kind other */
  /* Movement motif: leaves fast, settles precisely. Never bouncy. */
  --ease-out:cubic-bezier(.2,.8,.2,1); /* @kind other */
  --ease-in-out:cubic-bezier(.65,0,.35,1); /* @kind other */
  --ease-entrance:cubic-bezier(.16,1,.3,1); /* @kind other */
  --transition-control:background-color var(--duration-fast) var(--ease-out),color var(--duration-fast) var(--ease-out),border-color var(--duration-fast) var(--ease-out),box-shadow var(--duration-fast) var(--ease-out),transform var(--duration-fast) var(--ease-out); /* @kind other */
  --translate-nudge:2px; /* @kind spacing */
  --translate-reveal:16px; /* @kind spacing */
}