#app-startup {
  position: fixed;
  inset: 0;
  z-index: 100000;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-direction: column;
  gap: 16px;
  padding: 24px;
  background: #111827;
  color: #d1d5db;
  text-align: center;
  font: 16px Georgia, serif;
}
#app-startup[hidden], #app-startup [hidden] { display: none; }
#app-startup svg { width: 48px; height: 48px; }
#app-startup button {
  padding: 8px 18px;
  border: 1px solid #b7791f;
  border-radius: 6px;
  background: #1f2937;
  color: #f5a623;
  font: inherit;
  cursor: pointer;
}
@media (prefers-reduced-motion: reduce) {
  #app-startup svg circle { animation: none; opacity: 1; }
}