html, body { margin: 0; min-height: 100%; background: #0f172a; color: #e8f0f8; }
#root { min-height: 100vh; }
#vitrea-boot-fail { display: none; font-family: Segoe UI, sans-serif; padding: 2rem; max-width: 36rem; }
#vitrea-boot-fail.is-on { display: block; }
#vitrea-boot-fail a { color: #7dd3e8; }