html, body { margin: 0; background: #F7F9FB; color: #191C1E; font-family: system-ui, sans-serif; }
#startup { position: fixed; inset: 0; display: flex; flex-direction: column; align-items: center; justify-content: center; padding: 24px; text-align: center; }
#startup img { border-radius: 18px; }
#startup h1 { font-size: 24px; }
[hidden] { display: none !important; }
button { font: inherit; color: #fff; background: #131B2E; border: 0; border-radius: 10px; padding: 12px 16px; cursor: pointer; min-height: 44px; }
aside { position: fixed; z-index: 10000; left: max(12px, env(safe-area-inset-left)); right: max(12px, env(safe-area-inset-right)); top: calc(12px + env(safe-area-inset-top)); margin: 0 auto; max-width: 600px; border: 1px solid #C6C6CD; border-radius: 12px; padding: 12px; background: #fff; box-shadow: 0 4px 20px #0002; }
#update-notice { display: flex; gap: 8px; flex-wrap: wrap; align-items: center; }
#update-notice span { flex: 1 1 240px; }
#connection-notice { background: #fff5e9; }
#dismiss-update { background: #ECEEF0; color: #191C1E; }