.back-to-top{position:fixed;right:20px;bottom:22px;z-index:80;display:flex;align-items:center;gap:7px;padding:10px 14px;border:1px solid #d4deca;border-radius:999px;background:#fffef5;color:#244b3b;font:600 12px/1 system-ui,sans-serif;box-shadow:0 5px 22px #203c2c24;cursor:pointer;opacity:0;transform:translateY(8px);pointer-events:none;transition:opacity .18s ease,transform .18s ease}.back-to-top[hidden]{display:none}.back-to-top.is-visible{opacity:1;transform:translateY(0);pointer-events:auto}.back-to-top svg{width:16px;height:16px;fill:none;stroke:currentColor;stroke-width:2;stroke-linecap:round;stroke-linejoin:round}@media(max-width:760px){.back-to-top{right:14px;bottom:calc(88px + env(safe-area-inset-bottom));padding:11px 14px}}@media(prefers-reduced-motion:reduce){.back-to-top{transition:none}}