/* CAMADA-MED RC-O8 · navegação pública coerente */
.cm-o8-back{position:fixed;z-index:10020;left:max(12px,env(safe-area-inset-left));top:max(12px,env(safe-area-inset-top));display:inline-flex;align-items:center;gap:7px;min-height:40px;padding:0 13px;border:1px solid rgba(198,161,91,.30);border-radius:999px;background:rgba(4,11,20,.86);color:#f5f0e6;text-decoration:none;font:700 11px/1 -apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;box-shadow:0 12px 32px rgba(0,0,0,.22);backdrop-filter:blur(18px);-webkit-backdrop-filter:blur(18px);cursor:pointer}
.cm-o8-back svg{width:16px;height:16px;fill:none;stroke:#e1c98e;stroke-width:2;stroke-linecap:round;stroke-linejoin:round}
.cm-o8-back:focus-visible,[data-cm-home]:focus-visible{outline:2px solid #e1c98e;outline-offset:3px}
[data-cm-home],.official-logo-link,.lib-logo,.brand{cursor:pointer}
@media(prefers-reduced-transparency:reduce){.cm-o8-back{backdrop-filter:none;-webkit-backdrop-filter:none;background:#07111e}}