/* Topic pages with a right-hand directory, 2026-08-20 */
.topic-layout-shell,
.topic-layout-shell * {
  box-sizing: border-box;
}

.topic-layout-shell {
  width: min(calc(100% - 48px), 1180px);
  margin: 0 auto;
  padding: 46px 0 72px;
}

.topic-layout-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 260px;
  align-items: start;
  gap: 34px;
}

.topic-layout-content,
.topic-layout-content > section {
  min-width: 0;
}

.topic-layout-content .container {
  width: 100%;
  max-width: none;
  margin-right: 0;
  margin-left: 0;
}

.topic-layout-toc {
  position: sticky;
  top: 22px;
  min-width: 0;
  border: 1px solid #dce5f5;
  border-radius: 8px;
  background: #f7f9ff;
  padding: 18px;
}

.topic-layout-toc > strong {
  display: block;
  margin-bottom: 12px;
  color: #1037a0;
  font-size: 17px;
  line-height: 1.5;
}

.topic-layout-toc > a {
  display: block;
  margin: 0;
  padding: 7px 0;
  color: #24417c;
  font-size: 14px;
  line-height: 1.55;
  text-decoration: none;
  overflow-wrap: anywhere;
}

@media (max-width: 900px) {
  .topic-layout-shell {
    width: min(calc(100% - 32px), 1180px);
    padding: 32px 0 48px;
  }

  .topic-layout-grid {
    grid-template-columns: minmax(0, 1fr);
    gap: 24px;
  }

  .topic-layout-toc { position: static; }
}