/* Floating 44px control: no extra toolbar or document-flow space. */
#ch-fast-back{position:fixed;inset-inline-start:max(8px,env(safe-area-inset-left));top:max(calc(var(--ch-back-top,8px) + 8px),calc(env(safe-area-inset-top) + 8px));z-index:145;width:44px;height:44px;min-width:44px;min-height:44px;padding:10px;display:grid;place-items:center;border:1px solid var(--border-color,#697682);border-radius:50%;background:var(--bg-secondary,#17222b);color:var(--text-primary,#fff);box-shadow:0 2px 8px #0003;touch-action:manipulation;cursor:pointer}
#ch-fast-back[hidden]{display:none!important}#ch-fast-back:disabled{opacity:.65;cursor:wait}#ch-fast-back:focus-visible{outline:3px solid var(--accent,#d84a99);outline-offset:2px}#ch-fast-back svg{width:24px;height:24px;fill:none;stroke:currentColor;stroke-width:2;stroke-linecap:round;stroke-linejoin:round}
html[dir="rtl"] #ch-fast-back svg{transform:scaleX(-1)}
#ch-fast-back.ch-back-loopz{inset-inline-start:max(12px,env(safe-area-inset-left));top:calc(64px + env(safe-area-inset-top))}
html[dir="rtl"] #ch-fast-back{inset-inline-start:max(12px,env(safe-area-inset-right))}
@media(forced-colors:active){#ch-fast-back{color:ButtonText;background:ButtonFace;border-color:ButtonText}}