/* Ambient film grain + vignette (shared, matches the homepage) */
.fx-overlay {
  position: fixed;
  inset: 0;
  z-index: 997;
  pointer-events: none;
  background: radial-gradient(125% 125% at 50% 42%, rgba(0,0,0,0) 56%, rgba(0,0,0,0.5) 100%);
}
.fx-overlay::before {
  content: "";
  position: absolute;
  inset: -150%;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='180' height='180'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.8' numOctaves='2' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
  background-repeat: repeat;
  opacity: 0.10;
  mix-blend-mode: overlay;
  will-change: transform;
  animation: fxGrain 1.1s steps(5) infinite;
}
@keyframes fxGrain {
  0%   { transform: translate(0, 0); }
  20%  { transform: translate(-6%, 4%); }
  40%  { transform: translate(5%, -5%); }
  60%  { transform: translate(-4%, 6%); }
  80%  { transform: translate(6%, -3%); }
  100% { transform: translate(0, 0); }
}
@media (prefers-reduced-motion: reduce) {
  .fx-overlay::before { animation: none; }
}