.library-back{position:fixed;bottom:6px;left:10px;z-index:1000;display:block;border:1px solid #c9d9e1;background:#fffef9;color:#006a9e;padding:6px 10px;border-radius:6px;font:600 12px/1.2 system-ui,sans-serif;text-decoration:none;max-width:calc(100vw - 20px)}
/* Keep the return link clear of full-screen playback and model controls. */
body:not(.qr-launcher)>.library-back{display:none}

/* Long translated reset labels must fit beside the mobile navigation. */
@media(max-width:720px){.topbar>.reset-button{min-width:0;display:block;flex:1 1 0;padding:6px;font-size:12px;line-height:1.25;overflow-wrap:anywhere}}