.bk98-pwa-prompt {
  position:fixed;
  z-index:99999;
  left:max(12px, env(safe-area-inset-left));
  right:max(12px, env(safe-area-inset-right));
  bottom:max(14px, calc(env(safe-area-inset-bottom) + 10px));
  max-width:520px;
  margin:0 auto;
  padding:14px 14px 13px;
  border-radius:18px;
  border:1px solid rgba(255,255,255,.13);
  background:rgba(15,13,18,.97);
  color:#fff;
  box-shadow:0 18px 56px rgba(0,0,0,.42);
  backdrop-filter:blur(16px);
  font:500 15px/1.38 system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;
}
.bk98-pwa-prompt strong { display:block; font-size:17px; margin-bottom:3px; }
.bk98-pwa-prompt p { margin:0 0 11px; color:#c9c3cc; }
.bk98-pwa-actions { display:flex; gap:8px; }
.bk98-pwa-actions button {
  flex:1 1 auto;
  min-height:44px;
  border-radius:12px;
  border:1px solid rgba(255,255,255,.12);
  background:#202028;
  color:#fff;
  font-weight:750;
  font-size:15px;
}
.bk98-pwa-actions .primary { border:0; background:linear-gradient(135deg,#ef1672,#ed3f93); }
@media (min-width:768px){.bk98-pwa-prompt{left:auto;right:22px;bottom:22px;width:390px;margin:0}}
@media (max-width:767px){
  .bk98-pwa-prompt{font-size:16px;line-height:1.42;padding:16px 15px 14px}
  .bk98-pwa-prompt strong{font-size:18px}
  .bk98-pwa-actions button{min-height:50px;font-size:16px;padding:10px 13px}
}