:root {
  /* The system is flat: depth comes from surface alternation, rules and radii. */
  --elevation-flat: none;
  --elevation-bordered: inset 0 0 0 1px var(--rule);
  --elevation-media: none;
  --shadow-focus: 0 0 0 2px var(--focus-ring);
  --shadow-error: 0 0 0 2px var(--state-error);
  --motion-fast: 120ms; /* @kind other */
  --motion-base: 200ms; /* @kind other */
  --motion-slow: 320ms; /* @kind other */
  --ease-standard: cubic-bezier(0.4, 0, 0.2, 1); /* @kind other */
}