.gsb-install{position:fixed;left:16px;right:16px;bottom:calc(16px + env(safe-area-inset-bottom));z-index:9999;display:none;max-width:520px;margin:auto;background:rgba(8,28,51,.98);color:#fff;border:1px solid rgba(255,255,255,.14);border-radius:20px;box-shadow:0 18px 50px rgba(2,18,35,.28);padding:16px}.gsb-install.show{display:block}.gsb-install-row{display:flex;gap:12px;align-items:center}.gsb-install-icon{width:46px;height:46px;border-radius:12px;background:#f6fbff;padding:5px;flex:0 0 auto}.gsb-install-copy{min-width:0;flex:1}.gsb-install-copy strong{display:block;font:800 16px/1.2 Inter,system-ui,sans-serif}.gsb-install-copy span{display:block;margin-top:4px;color:#c7d8e7;font:500 13px/1.35 Inter,system-ui,sans-serif}.gsb-install-actions{display:flex;gap:8px;margin-top:14px}.gsb-install-actions button{border:0;border-radius:999px;padding:10px 14px;font-weight:800;cursor:pointer}.gsb-install-primary{background:#14b8e6;color:#06213a}.gsb-install-secondary{background:rgba(255,255,255,.09);color:#fff}.gsb-ios-help{margin-top:10px;color:#d9e6f0;font:500 12px/1.45 Inter,system-ui,sans-serif}@media(min-width:700px){.gsb-install{left:auto;right:22px;bottom:22px;width:390px}}