html,body { margin:0; background:#f3f7f8; color:#16333d; font-family:'Segoe UI','Yu Gothic',sans-serif; }
.startup-loading { min-height:70vh; display:flex; align-items:center; justify-content:center; flex-direction:column; gap:16px; padding:24px; box-sizing:border-box; text-align:center; }
.startup-spinner { width:32px; height:32px; box-sizing:border-box; border:4px solid #d0e2e8; border-top-color:#245766; border-radius:50%; animation:startup-spin 1s linear infinite; }
.startup-loading p { margin:0; font-size:16px; }
.startup-retry { color:#245766; padding:10px 16px; border:1px solid #245766; border-radius:6px; background:white; font:inherit; cursor:pointer; }
#blazor-error-ui { display:none; }
@keyframes startup-spin { to { transform:rotate(360deg); } }
@media(prefers-reduced-motion:reduce) { .startup-spinner { animation:none; } }