.back-to-top{position:fixed;z-index:28;right:24px;bottom:24px;display:grid;place-items:center;width:50px;height:50px;padding:0;border:1px solid rgba(216,180,89,.85);border-radius:50%;background:#031b3c;color:#fff;box-shadow:0 10px 28px rgba(2,20,45,.3);font:900 1.5rem/1 Arial,sans-serif;cursor:pointer;opacity:0;pointer-events:none;transform:translateY(14px);transition:opacity .22s,transform .22s,background-color .22s,color .22s}
.back-to-top.is-visible{opacity:1;pointer-events:auto;transform:none}.back-to-top:hover,.back-to-top:focus-visible{background:#e30620;border-color:#e30620;color:#fff}.back-to-top span{transform:translateY(-1px)}
@media(max-width:700px){.back-to-top{right:14px;bottom:86px;width:44px;height:44px;font-size:1.3rem}}
@media(prefers-reduced-motion:reduce){.back-to-top{transition:none}}