.vsi{position:fixed;left:min(40px,4vw);top:50%;transform:translateY(-50%);z-index:10;pointer-events:none}.vsi-track{position:relative;width:1px;height:40vh;background:#ffffff4d}.vsi-thumb{--vsi-thumb-h: 40px;position:absolute;left:50%;width:3px;height:var(--vsi-thumb-h);background:#fff;top:calc(var(--vsi-progress, 0) * (100% - var(--vsi-thumb-h)));transform:translate(-50%)}@media(max-width:767px){.vsi{display:none}}