html, body { height: 100%; margin: 0; background: #fbf8ff; }
#boot {
  position: fixed; inset: 0; display: flex; align-items: center; justify-content: center;
  font: 16px system-ui, -apple-system, "Malgun Gothic", sans-serif; color: #485d86;
}
@media (prefers-color-scheme: dark) {
  html, body { background: #121318; }
  #boot { color: #b1c5f5; }
}