/* Static monochrome grain, below viewer controls and labels. */
#stage { isolation: isolate; z-index: 0; }
#stage::after { content:""; position:absolute; inset:0; z-index:1; pointer-events:none; background-image:url('./film-grain.png'); background-repeat:repeat; background-size:var(--grain-tile,256px) var(--grain-tile,256px); mix-blend-mode:soft-light; opacity:.24; }