.sst-bar{width:4px;border-radius:2px;background:var(--clr-accent);height:4px;opacity:.25;flex-shrink:0}.btn-left.active{background:rgba(62,207,207,.15)}.btn-right.active{background:rgba(91,143,255,.15)}.btn-auto.active{background:rgba(247,183,49,.15)}.btn-stereo.active{background:rgba(165,94,234,.15)}.sst-dot.on{background:var(--clr-success);animation:sstpulse 1.5s ease-in-out infinite}