.series-viewer__sound {
  position: absolute;
  z-index: 5;
  top: 16px;
  right: 16px;
  min-width: 44px;
  min-height: 44px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border: 1px solid #ffffff70;
  border-radius: 50%;
  color: white;
  background: #08090ddd;
  touch-action: manipulation;
  cursor: pointer;
}
.series-viewer__sound svg { width: 22px; height: 22px; pointer-events: none; }
.stage-control--mute { min-width: 44px; min-height: 44px; touch-action: manipulation; }
.series-viewer__sound:focus-visible { outline: 3px solid #c768ff; outline-offset: 3px; }