.tbn-scrollbar{position:fixed;left:0;top:0;z-index:99999;width:100%;height:3px;pointer-events:none;background:linear-gradient(90deg,#fdbc18 0%,#ffe46b 40%,#1e90ff 100%);box-shadow:0 0 12px rgba(253,188,24,.55);transform-origin:0 50%;transform:scaleX(0)}@media (prefers-reduced-motion:reduce){.tbn-scrollbar{display:none}}