#pwaInstallBanner{
  position:fixed; left:16px; right:16px; bottom:16px; z-index:99999;
  max-width:560px; margin:0 auto; padding:14px 16px;
  border-radius:16px; background:#102a43; color:#fff;
  box-shadow:0 12px 32px rgba(0,0,0,.22);
  display:none; align-items:center; gap:12px; flex-wrap:wrap;
  font-family:Arial,sans-serif;
}
#pwaInstallBanner .pwaText{flex:1 1 220px}
#pwaInstallBanner .pwaTitle{font-weight:700;margin-bottom:4px}
#pwaInstallBanner .pwaSub{font-size:13px;opacity:.88;line-height:1.35}
#pwaInstallBanner button{
  border:0;border-radius:10px;padding:10px 14px;cursor:pointer;font-weight:700
}
#pwaInstallBtn{background:#fff;color:#102a43}
#pwaLaterBtn{background:rgba(255,255,255,.14);color:#fff}
#pwaIosHelp{
  display:none; position:fixed; inset:0; z-index:100000;
  background:rgba(0,0,0,.55); padding:20px;
  align-items:center; justify-content:center;
}
#pwaIosHelp .box{
  width:min(520px,100%);background:#fff;color:#172b4d;border-radius:16px;padding:20px;
  box-shadow:0 18px 50px rgba(0,0,0,.25)
}
#pwaIosHelp h3{margin-top:0}
#pwaIosHelp button{border:0;border-radius:10px;padding:10px 14px;background:#18548c;color:#fff;font-weight:700}