:root{--floating-back-size:40px;--floating-back-gap:var(--space-2);--floating-back-clearance:calc(var(--floating-back-gap) + var(--floating-back-size) + var(--space-2))}.floating-back-button{--icon-button-size:var(--floating-back-size);--icon-button-glyph:22px;animation:floating-back-button-in var(--duration-fast) var(--ease-default);left:var(--space-3);position:fixed;top:calc(var(--top-content-inset, 0px) + var(--floating-back-gap));z-index:var(--z-header)}@keyframes floating-back-button-in{0%{opacity:0;transform:translateX(-6px)}to{opacity:1;transform:none}}@media (prefers-reduced-motion:reduce){.floating-back-button{animation:none}}