body.theme-app .back-to-top{position:fixed;bottom:24px;right:24px;width:44px;height:44px;border-radius:50%;background:rgba(31,31,44,.92);color:#fff;border:1px solid #3a3a4a;display:none;align-items:center;justify-content:center;font-size:20px;cursor:pointer;z-index:90;backdrop-filter:blur(10px);touch-action:manipulation;-webkit-tap-highlight-color:transparent;transition:background .2s,transform .15s}body.theme-app .back-to-top.show{display:flex}body.theme-app .back-to-top:hover{background:#fe2c55}body.theme-app .back-to-top:active{transform:scale(.92)}@media (max-width:768px){body.theme-app .back-to-top{bottom:16px;right:16px;width:40px;height:40px;font-size:18px}}