.install-banner{position:fixed;left:50%;bottom:18px;z-index:1000;transform:translateX(-50%);width:min(680px,calc(100% - 28px));display:flex;align-items:center;gap:18px;padding:16px 18px;border:1px solid var(--border);border-radius:16px;background:color-mix(in srgb,var(--surface) 96%,transparent);box-shadow:0 20px 55px rgba(17,34,57,.22);backdrop-filter:blur(16px);color:var(--text)}.install-copy{min-width:0;flex:1}.install-copy strong{display:block;font-size:14px}.install-copy p{margin:4px 0 0;color:var(--muted);font-size:11px;line-height:1.45}.ios-install-help{margin-top:8px!important;padding:9px 10px;border-radius:9px;background:var(--accent-soft);color:var(--text)!important}.install-actions{display:flex;gap:8px;flex-shrink:0}.install-primary,.install-later{border-radius:10px;padding:10px 13px;font-size:11px;font-weight:800;cursor:pointer}.install-primary{border:0;background:var(--accent);color:#fff}.install-later{border:1px solid var(--border);background:var(--surface-soft);color:var(--text)}@media(max-width:560px){.install-banner{bottom:10px;align-items:stretch;flex-direction:column;gap:12px;padding:15px}.install-actions{display:grid;grid-template-columns:1fr 1fr}.install-primary,.install-later{min-height:42px}}