.tome-page .chapter-grid { position: relative; }
.tome-page .chapter-grid::before {
  content: '';
  position: absolute;
  top: 0;
  bottom: 0;
  left: 50%;
  width: 1px;
  background: linear-gradient(180deg, transparent, rgba(200, 166, 107, .3) 10%, rgba(200, 166, 107, .3) 90%, transparent);
  pointer-events: none;
}
.tome-page .chapter-card { z-index: 1; }
@media (max-width: 600px) { .tome-page .chapter-grid::before { left: 18px; } }