/* container for chapter children */
.sidebar-subitems {
  padding-left: 32px; /* main indent under chapter title */
  margin-top: 6px; /* small vertical separation */
}

/* individual module items */
.sidebar-subitem {
  padding-left: 6px; /* micro-centering tweak */
  font-size: 0.9rem;
  opacity: 0.95;
}