.mobile-topbar{
  position: fixed;
  top: 0; left: 0; right: 0;
  height: 64px;
  background: #0f1b27;
  border-bottom: 1px solid #0c1723;
  display: none; align-items: center; justify-content: space-between;
  padding: 0 12px; z-index: 9999;
}
@media (max-width: 768px){
  .mobile-topbar{ display: flex; }
}