.install-app-btn{display:inline-flex;align-items:center;justify-content:center;gap:7px;min-height:40px;padding:9px 14px;border-radius:10px;font-weight:800;white-space:nowrap}
.install-app-btn.is-installed{opacity:.75}
.install-help-modal{position:fixed;inset:0;z-index:10050;background:rgba(15,23,42,.58);display:flex;align-items:center;justify-content:center;padding:16px}
.install-help-modal.hidden{display:none!important}
.install-help-card{width:min(430px,100%);background:#fff;border-radius:18px;padding:18px;box-shadow:0 24px 70px rgba(0,0,0,.28);color:#111827}
.install-help-head{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-bottom:12px}.install-help-head h3{margin:0;font-size:18px}.install-help-close{border:0;background:#eef2f7;border-radius:9px;padding:8px 11px;font-size:18px;cursor:pointer}.install-help-card p{margin:8px 0;line-height:1.55}.install-help-steps{margin:12px 0 0;padding-left:22px;line-height:1.75}.install-help-icon{font-size:32px;text-align:center;margin:2px 0 8px}
@media(max-width:640px){.install-app-btn{flex:1 1 100%;width:100%}.install-help-card{border-radius:15px}}