/* Independent lighting zones on the retouched studio photograph. */
.rgb-cyclorama { display: block; overflow: hidden; }
.rgb-zone { animation: cave-light-color 8s linear infinite; }
.rgb-panel { mix-blend-mode: multiply; opacity: .62; animation: cave-panel-color 8s linear infinite; }
.rgb-zone-b, .rgb-panel-b { animation-duration: 9s; animation-delay: -3s; }
.rgb-zone-c, .rgb-panel-c { animation-duration: 7s; animation-delay: -5s; }
.rgb-zone-d, .rgb-panel-d { animation-duration: 10s; animation-delay: -2s; }
@keyframes cave-light-color {
  from { filter: sepia(.35) saturate(1.8) hue-rotate(0deg); }
  to { filter: sepia(.35) saturate(1.8) hue-rotate(360deg); }
}
@keyframes cave-panel-color {
  0%, 100% { fill: #55bfff; }
  25% { fill: #cf78ff; }
  50% { fill: #ff758d; }
  75% { fill: #71ffc4; }
}
@media (prefers-reduced-motion: reduce) {
  .rgb-zone { animation: none; filter: none; }
  .rgb-panel { animation: none; opacity: 0; }
}