@keyframes fadein{to{opacity:1}}.back-to-top{z-index:1000;opacity:0;pointer-events:none;transition:all .4s cubic-bezier(.165,.84,.44,1);position:fixed;bottom:40px;right:40px;transform:translateY(20px)scale(.9)}.back-to-top.visible{opacity:1;pointer-events:auto;transform:translateY(0)scale(1)}.back-to-top button{cursor:pointer;-webkit-backdrop-filter:blur(12px);color:#fff;background:linear-gradient(150deg,#01bb7ad9 0%,#005c3bbf 100%);border:1px solid #ffffff4d;border-radius:50%;outline:none;justify-content:center;align-items:center;width:60px;height:60px;transition:all .3s;display:flex;box-shadow:0 10px 25px #0003}.back-to-top button svg{width:26px;height:26px;transition:transform .3s}.back-to-top button:hover{background:linear-gradient(150deg,#01bb7af2 0%,#005c3bd9 100%);transform:translateY(-5px);box-shadow:0 15px 35px #0000004d}.back-to-top button:hover svg{transform:translateY(-3px)}.back-to-top button:active{transform:translateY(2px);box-shadow:0 5px 15px #0003}@media (max-width:768px){.back-to-top{bottom:24px;right:24px}.back-to-top button{width:50px;height:50px}.back-to-top button svg{width:22px;height:22px}}