body.bigscreen-mode,body.bigscreen-sim{--font-scale:1.5}
body.bigscreen-mode .contact-footer,body.bigscreen-mode .bottom-nav,body.bigscreen-mode .a11y-toolbar{display:none}
body.bigscreen-sim{overflow:hidden}
body.bigscreen-sim main{position:fixed;inset:0;overflow:auto;z-index:500;background:var(--bg)}
body.bigscreen-mode .chapter{min-height:100vh}
#exit-bigscreen{position:fixed;top:12px;right:12px;z-index:600}
#remote-qr{position:fixed;bottom:24px;left:24px;z-index:600;background:#fff;padding:8px;border-radius:8px}