#boot-fallback {
  display: none;
  min-height: 100vh;
  align-items: center;
  justify-content: center;
  padding: 24px;
  font-family: Inter, system-ui, -apple-system, "Segoe UI", sans-serif;
  color: #334155;
  background: #f8fafc;
}
#boot-fallback .panel {
  max-width: 560px;
  width: 100%;
  background: #ffffff;
  border: 1px solid #e2e8f0;
  border-radius: 14px;
  padding: 20px;
  box-shadow: 0 10px 30px rgba(15, 23, 42, 0.08);
}
#boot-fallback h1 {
  margin: 0 0 8px;
  font-size: 20px;
  color: #0f172a;
}
#boot-fallback p {
  margin: 0;
  line-height: 1.6;
}
#boot-fallback button {
  margin-top: 14px;
  background: #2563eb;
  color: #ffffff;
  border: none;
  border-radius: 10px;
  padding: 10px 14px;
  font-weight: 600;
  cursor: pointer;
}
#boot-fallback button:hover {
  background: #1d4ed8;
}