/* Markdown formatting is scoped to activity bodies. */
.activity-detail-article :is(h1, h5, h6) {
  color: var(--text);
  line-height: 1.4;
  margin: 20px 0 12px;
  font-weight: 700;
  overflow-wrap: anywhere;
}
.activity-detail-article h1 { font-size: 24px; }
.activity-detail-article h5 { font-size: 15px; }
.activity-detail-article h6 { font-size: 14px; }
.activity-detail-article h1[id] { scroll-margin-top: 110px; }
.activity-detail-article em { font-style: italic; }
.activity-detail-article del { text-decoration: line-through; }
.activity-detail-article :is(ul, ol) :is(ul, ol) { margin: 8px 0; }
.activity-detail-article ul ul { list-style-type: circle; }
.activity-detail-article ul ul ul { list-style-type: square; }
.activity-detail-article ol ol { list-style-type: lower-alpha; }
.activity-detail-article li > p + p { margin-top: 8px; }
.activity-detail-article input[type="checkbox"] {
  width: 15px;
  height: 15px;
  margin-right: 6px;
  vertical-align: middle;
  accent-color: var(--accent);
}
.activity-detail-article blockquote > :first-child { margin-top: 0; }
.activity-detail-article blockquote > :last-child { margin-bottom: 0; }
.activity-detail-article :is(code, pre, kbd, samp) {
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-size: 13px;
}
.activity-detail-article :not(pre) > code {
  padding: 2px 6px;
  border: 1px solid var(--line);
  border-radius: 5px;
  color: var(--text);
  background: var(--activity-detail-soft);
  overflow-wrap: anywhere;
}
.activity-detail-article pre {
  max-width: 100%;
  overflow-x: auto;
  margin: 18px 0;
  padding: 16px;
  border: 1px solid var(--line);
  border-radius: 10px;
  background: var(--activity-detail-soft);
  color: var(--text);
  line-height: 1.7;
  tab-size: 4;
}
.activity-detail-article pre code {
  padding: 0;
  border: 0;
  background: transparent;
  color: inherit;
  white-space: pre;
  overflow-wrap: normal;
}
.activity-detail-article .highlight { min-width: 0; max-width: 100%; }
.activity-detail-article table {
  display: block;
  max-width: 100%;
  overflow-x: auto;
  margin: 18px 0;
  border-collapse: collapse;
  font-size: 14px;
  line-height: 1.7;
}
.activity-detail-article :is(th, td) {
  padding: 10px 14px;
  border: 1px solid var(--line);
  min-width: 100px;
}
.activity-detail-article th {
  background: var(--activity-detail-soft);
  color: var(--text);
  font-weight: 700;
}
.activity-detail-article tbody tr:nth-child(even) { background: var(--activity-detail-soft); }
.activity-detail-article :is(td, th) :is(p, ul, ol) { margin: 0; }
.activity-detail-article dl { margin: 18px 0; }
.activity-detail-article dt { margin-top: 12px; color: var(--text); font-weight: 700; }
.activity-detail-article dd { margin: 6px 0 12px 20px; line-height: 1.85; }
.activity-detail-article .footnotes {
  margin-top: 24px;
  font-size: 13px;
}
.activity-detail-article .footnotes :is(p, li) { font-size: 13px; }
.activity-detail-article > :first-child { margin-top: 0; }
.activity-detail-article > :last-child { margin-bottom: 0; }
/* A chapter list for the narrow poster column. */
.activity-detail-poster-side .activity-detail-toc { padding: 20px; }
.activity-detail-poster-side .activity-detail-toc h2 {
  font-size: 14px;
  font-weight: 700;
  padding-bottom: 14px;
  border-bottom: 1px solid var(--line);
}
.activity-detail-poster-side .activity-detail-toc nav { margin-top: 10px; }
.activity-detail-poster-side .activity-detail-toc ul {
  display: block;
  padding: 0;
  margin: 0;
  list-style: none;
}
.activity-detail-poster-side .activity-detail-toc li { margin: 2px 0; }
.activity-detail-poster-side .activity-detail-toc a {
  display: flex;
  width: 100%;
  min-height: 42px;
  padding: 10px 12px;
  border: 0;
  border-radius: 8px;
  color: var(--text);
  font-size: 14px;
  font-weight: 600;
  line-height: 1.6;
  text-decoration: none;
  overflow-wrap: anywhere;
}
.activity-detail-poster-side .activity-detail-toc ul ul {
  margin: 2px 0 8px 12px;
  padding-left: 12px;
  border-left: 1px solid var(--line);
}
.activity-detail-poster-side .activity-detail-toc ul ul a {
  min-height: 38px;
  padding: 8px 10px;
  color: var(--sub);
  font-size: 13px;
  font-weight: 400;
}
.activity-detail-poster-side .activity-detail-toc a:hover,
.activity-detail-poster-side .activity-detail-toc a:focus-visible {
  color: var(--accent);
  background: var(--activity-detail-soft);
}
.activity-detail-poster-side .activity-detail-toc a:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}
.activity-detail-redemption {
  margin-top: 28px;
  padding-top: 24px;
  border-top: 1px solid var(--line);
}
.activity-detail-article .activity-detail-redemption a {
  color: #fff;
  text-decoration: none;
}
.activity-detail-redemption svg { flex-shrink: 0; }
@media (max-width: 640px) {
  .activity-detail-redemption a { width: 100%; }
}
.activity-detail-article ul:has(> li > .activity-channel-link) {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 10px;
  padding: 0;
  list-style: none;
}
.activity-detail-article li:has(> .activity-channel-link) { margin: 0; }
.activity-detail-article .activity-channel-link {
  display: flex;
  align-items: center;
  gap: 12px;
  min-height: 56px;
  height: 100%;
  padding: 12px 16px;
  border: 1px solid var(--line);
  border-radius: 12px;
  background: var(--card);
  color: var(--text);
  text-decoration: none;
}
.activity-detail-article .activity-channel-link:hover {
  border-color: var(--accent);
  background: var(--activity-detail-soft);
}
.activity-channel-logo {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 32px;
  height: 32px;
  flex-shrink: 0;
  border-radius: 8px;
  background: #fff;
}
.activity-detail-article .activity-channel-logo img {
  width: 24px;
  height: 24px;
  margin: 0;
  border-radius: 0;
  object-fit: contain;
}
.activity-channel-name { font-size: 14px; font-weight: 600; line-height: 1.5; }
@media (max-width: 480px) {
  .activity-detail-article ul:has(> li > .activity-channel-link) { grid-template-columns: 1fr; }
}