.u-blink   { animation: blink 1.1s steps(2,end) infinite; }
.u-pulse   { animation: pulse-glow 1.6s var(--ease-pulse) infinite; }
.u-flicker { animation: flicker 4s var(--ease-pulse) infinite; }

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.001ms !important;
  }
}