.knowledge-list .knowledge-planned {
  opacity: .68;
}

.knowledge-list .knowledge-planned h3 {
  font-weight: 600;
}

.knowledge-list .knowledge-planned > span {
  color: #788696;
}

.article-references {
  border-top: 1px solid var(--line);
  margin-top: 55px;
  padding-top: 38px;
}

.article-references h2 {
  font-size: 30px;
  letter-spacing: -.05em;
  margin: 0 0 22px;
}

.article-references ol {
  padding-left: 22px;
}

.article-references li {
  color: #657487;
  padding: 10px 0 18px;
}

.article-references a {
  color: var(--blue);
  font-size: 13px;
  font-weight: 700;
  text-decoration: underline;
  text-underline-offset: 3px;
}

.article-references span {
  color: #8794a3;
  display: block;
  font: 9px var(--mono);
  margin-top: 7px;
}

.article-references p {
  color: #718094;
  font-size: 11px;
  line-height: 1.75;
  margin: 7px 0 0;
}

@media (max-width: 520px) {
  .article-references h2 {
    font-size: 26px;
  }
}