.back-to-top{position:fixed;right:clamp(14px,2vw,28px);bottom:clamp(16px,2vw,28px);z-index:80;display:flex;flex-direction:column;align-items:center;justify-content:center;width:58px;height:58px;padding:5px;border:1px solid #b9d8e9;border-radius:50%;background:#fff;color:#197f91;box-shadow:0 5px 20px #123e6526;cursor:pointer;opacity:0;visibility:hidden;pointer-events:none;transform:translateY(10px);transition:opacity .2s,transform .2s,visibility .2s}.back-to-top svg{width:24px;height:24px;display:block}.back-to-top.is-visible{opacity:1;visibility:visible;pointer-events:auto;transform:translateY(0)}.back-to-top:hover{background:#eaf5fc}.back-to-top:focus-visible{outline:3px solid #197f91;outline-offset:3px}@media(max-width:760px){.back-to-top{width:50px;height:50px;right:14px;bottom:16px}.back-to-top svg{width:21px;height:21px}}@media(prefers-reduced-motion:reduce){.back-to-top{transition:none}}