.static {
  inset: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
  z-index: 9999;
}

.slow {
  animation: flicker 0.2s steps(8) infinite;
}

.normal {
  animation: flicker 0.1s steps(5) infinite;
}

.fast {
  animation: flicker 0.05s steps(3) infinite;
}

@keyframes flicker {
  0%, 100% { opacity: 0.02; }
  20% { opacity: 0.04; }
  40% { opacity: 0.02; }
  60% { opacity: 0.03; }
  80% { opacity: 0.025; }
}