.tv-noise {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
  z-index: 9999;
  background: repeating-radial-gradient(circle at 20% 30%, #000, #0a0a0a 2px);
  opacity: 0.15;
  animation: noise 0.15s steps(2) infinite;
}

@keyframes noise {
  0% { opacity: 0.12; }
  50% { opacity: 0.18; }
  100% { opacity: 0.12; }
}