.session-startup {
  position: fixed;
  inset: 0;
  box-sizing: border-box;
  min-height: 100dvh;
  padding: 2rem;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 2rem;
  background: #fff;
  color: #154a7f;
  font: 1rem/1.5 'Inter', 'IBM Plex Sans', system-ui, -apple-system, 'Segoe UI', sans-serif;
}
.session-startup__logo { width: min(240px, 75vw); height: auto; }
.session-startup__status { display: flex; flex-direction: column; align-items: center; gap: .75rem; }
.session-startup__status p { margin: 0; }
.session-startup__spinner {
  width: 28px;
  height: 28px;
  box-sizing: border-box;
  border: 3px solid #eaf5fc;
  border-top-color: #154a7f;
  border-radius: 50%;
  animation: session-startup-spin .9s linear infinite;
}
@keyframes session-startup-spin { to { transform: rotate(360deg); } }
@media (prefers-reduced-motion: reduce) { .session-startup__spinner { animation: none; } }