/* Trade X — settlement lattice background layer.
   Fixed to the viewport and inert: it must never intercept a click, and it
   must never sit above a panel, a chart or the nav. */
#txLattice{
  position:fixed;
  inset:0;
  width:100%;
  height:100%;
  z-index:0;
  pointer-events:none;
  display:block;
  opacity:.85;
}
/* On a light ground the mesh needs to recede further still — the JS already
   scales alpha, this keeps it honest at the extremes. */
.tx-light #txLattice{opacity:.62}

@media (prefers-reduced-motion: reduce){
  #txLattice{opacity:.45}
}