/* PWA 安裝引導列（前台） */
.pwa-install { position: fixed; left: 12px; right: 12px; bottom: 12px; z-index: 9998; display: flex; align-items: center; gap: 10px; padding: 10px 12px; background: #14161f; color: #fff; border-radius: 12px; box-shadow: 0 10px 30px rgba(0, 0, 0, .25); font-size: 13.5px; }
.pwa-install[hidden] { display: none; }
.pwa-install-text { flex: 1; line-height: 1.5; }
.pwa-install-btn { flex: none; padding: 8px 14px; border-radius: 9px; border: none; background: #fff; color: #14161f; font-size: 13px; font-weight: 700; cursor: pointer; }
.pwa-install-close { flex: none; width: 28px; height: 28px; border-radius: 50%; border: 1px solid rgba(255, 255, 255, .35); background: transparent; color: #fff; font-size: 16px; line-height: 1; cursor: pointer; }
@media (min-width: 900px) { .pwa-install { left: auto; right: 20px; max-width: 460px; } }