.back-to-top{position:fixed;left:24px;bottom:24px;z-index:60;display:flex;align-items:center;justify-content:center;width:48px;height:48px;border:1px solid var(--gold);border-radius:50%;background:var(--gold);color:var(--ink-darkest);cursor:pointer;opacity:0;visibility:hidden;transform:translateY(12px);transition:opacity 0.3s ease,transform 0.3s ease,background-color 0.3s ease,border-color 0.3s ease}.back-to-top.is-visible{opacity:1;visibility:visible;transform:translateY(0)}.back-to-top:hover,.back-to-top:focus-visible{background:var(--gold-dark);border-color:var(--gold-dark)}.back-to-top:focus-visible{outline:2px solid var(--ink);outline-offset:2px}.back-to-top i{font-size:22px;line-height:1}@media (max-width:600px){.back-to-top{left:16px;bottom:16px;width:42px;height:42px}.back-to-top i{font-size:20px}}@media (prefers-reduced-motion:reduce){.back-to-top{transition:opacity 0.15s linear,visibility 0.15s linear;transform:none}}