.update-banner {
  position: fixed;
  bottom: 20px;
  left: 50%;
  transform: translateX(-50%);
  background: #0B1F3A;
  color: #fff;
  padding: 14px 20px;
  border-radius: 14px;
  display: flex;
  align-items: center;
  gap: 15px;
  box-shadow: 0 15px 35px rgba(0,0,0,.25);
  z-index: 99999;
  font-family: "Poppins", sans-serif;
  font-size: 14px;
}
.update-banner button {
  background: #2D6CDF;
  color: #fff;
  border: none;
  padding: 8px 16px;
  border-radius: 10px;
  font-weight: 600;
  cursor: pointer;
}

.install-app-btn {
  display: none;
  align-items: center;
  gap: 8px;
  height: 42px;
  padding: 0 18px;
  border: none;
  border-radius: 12px;
  background: linear-gradient(135deg, #2D6CDF, #0B1F3A);
  color: #fff;
  font-family: "Poppins", sans-serif;
  font-size: 13px;
  font-weight: 600;
  cursor: pointer;
  transition: 0.3s;
  box-shadow: 0 8px 20px rgba(45,108,223,0.35);
}
.install-app-btn:hover { transform: translateY(-2px); }
.install-app-btn:active { transform: scale(0.97); }
@media (max-width: 600px) {
  .install-app-btn span { display: none; }
  .install-app-btn { padding: 0 14px; }
}