.install-app-button { display: block; margin: 14px auto; padding: 10px 16px; border: 1px solid #109eae; border-radius: 10px; background: #e9fafb; color: #0b5560; font: inherit; cursor: pointer; min-height: 44px; }
.install-app-button[hidden], [data-install-app][hidden] { display: none !important; }
.install-app-dialog { direction: rtl; color: #172a3a; width: min(440px, calc(100vw - 36px)); padding: 24px; box-sizing: border-box; border: 0; border-radius: 18px; font: inherit; }
.install-app-dialog::backdrop { background: #0b1f3a99; }
.install-app-dialog img { display: block; width: min(240px, 85%); height: auto; margin: 16px auto 24px; }
.install-app-dialog h2 { font-size: 22px; margin: 0 0 12px; }
.install-app-dialog p { line-height: 1.8; }
.install-help-close { background: transparent; border: 0; font: inherit; font-size: 26px; cursor: pointer; min-width: 44px; min-height: 44px; }
.install-help-done { width: 100%; border: 0; background: #0a8a99; color: white; padding: 12px; border-radius: 10px; font: inherit; cursor: pointer; }
.install-preview-notice { background: #fff6df; padding: 12px; border-radius: 8px; font-size: 13px; }
@media (max-width: 600px) { .portal-bar [data-install-app] { font-size: 12px; padding: 7px; } }
@media print { [data-install-app], .install-app-dialog { display: none !important; } }