.back-to-top{position:fixed;right:max(22px,env(safe-area-inset-right));bottom:calc(22px + env(safe-area-inset-bottom));z-index:50;display:inline-flex;align-items:center;justify-content:center;gap:9px;min-height:48px;padding:11px 18px;border:1px solid #7492ac;border-radius:30px;background:#475b63;color:#fff;font:600 14px/1.4 Arial,sans-serif;box-shadow:0 4px 18px #1f1f1f26;cursor:pointer}.back-to-top[hidden]{display:none!important}.back-to-top>span:first-child{font-size:23px;line-height:1}.back-to-top:hover{background:#1f1f1f}.back-to-top:focus-visible{outline:3px solid #7492ac;outline-offset:4px}body:has(dialog[open]) .back-to-top{display:none}@media(max-width:580px){.back-to-top{right:max(14px,env(safe-area-inset-right));bottom:calc(14px + env(safe-area-inset-bottom));padding:10px 15px}}