@media (max-width:768px){
  .sidebar{
    transform:translateX(-100%)!important;
    visibility:hidden!important;
    pointer-events:none!important;
    z-index:1000!important;
    transition:transform .25s ease,visibility 0s linear .25s!important
  }
  .sidebar.open{
    transform:translateX(0)!important;
    visibility:visible!important;
    pointer-events:auto!important;
    transition:transform .25s ease,visibility 0s linear 0s!important
  }
  #nsys-menu-btn{
    position:fixed;top:12px;left:12px;z-index:99999;
    width:44px;height:44px;border-radius:10px;border:0;
    background:#3d5a80;color:#fff;font-size:22px;
    cursor:pointer;box-shadow:0 2px 8px rgba(0,0,0,.3);
    display:flex;align-items:center;justify-content:center;
    -webkit-tap-highlight-color:transparent
  }
  #nsys-mask{
    position:fixed;top:0;left:0;right:0;bottom:0;
    background:rgba(0,0,0,.5);z-index:9998;display:none
  }
}