.备案页脚{flex-shrink:0;display:flex;align-items:center;justify-content:center;gap:4px;height:22px;padding-bottom:env(safe-area-inset-bottom);border-top:1px solid var(--line);background:var(--ink-900);color:var(--text-mid);font-family:var(--font-sans);font-size:11px;line-height:1;letter-spacing:.02em;opacity:.78}.备案页脚 a{color:inherit;text-decoration:none;padding:4px 2px}.备案页脚 a:hover,.备案页脚 a:focus-visible{text-decoration:underline;opacity:1}.看板 .备案页脚{border-top:1px solid var(--line);margin-top:8px;background:transparent}