.edlum-subject-single,
.edlum-topic-single {
  border: 1px solid #ccc;
  border-radius: 10px;
  padding: 20px;
  background: #fff;
  transition: box-shadow 0.3s ease;
}
.edlum-subject-single:hover,
.edlum-topic-single:hover {
  box-shadow: 0 4px 12px rgba(0,0,0,0.15);
}
.edlum-subject-single h2::before {
  content: "\f330"; /* dashicons-book */
  font-family: dashicons;
  margin-right: 6px;
  vertical-align: middle;
}