.coll-flow {
  margin: 0 auto;
  max-width: var(--content);
  width: 100%;
}

.pager-main--narrow .coll-flow {
  max-width: none;
}

.coll-header {
  margin: 0 0 1.5rem;
}

.coll-title {
  color: var(--ink);
  font-size: clamp(1.75rem, 5vw, 2.6rem);
  font-weight: 700;
  letter-spacing: -0.04em;
  line-height: 1.08;
  margin: 0 0 0.4rem;
}

.coll-sub {
  color: var(--muted);
  font-size: 0.95rem;
  line-height: 1.5;
  margin: 0 0 1.25rem;
}

.topic-tldr-block {
  margin: 0 0 1.5rem;
}

.topic-tldr__title {
  color: var(--ink);
  font-size: 1.05rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  margin: 0 0 0.65rem;
}

.topic-tldr {
  color: var(--ink);
  line-height: 1.55;
  margin: 0;
  padding-left: 1.25rem;
}

.topic-tldr li + li {
  margin-top: 0.35rem;
}

.topic-faq {
  margin: 0 0 2.5rem;
  max-width: var(--content);
  padding-bottom: 0.25rem;
}

.topic-page__nav + .topic-posts {
  margin-top: 0;
  padding-top: 1.75rem;
}

.topic-page__nav + .topic-posts:has(.ch-feed) {
  border-top: 1px solid var(--line);
}

.topic-posts {
  max-width: var(--content);
}

.coll-section-title {
  color: var(--ink);
  font-size: 1.05rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  margin: 0 0 1rem;
}

.topic-faq-item summary::before {
  color: var(--muted);
  content: "+";
  display: inline-block;
  font-weight: 700;
  margin-right: 0.5rem;
  width: 0.85rem;
}

.topic-faq-item[open] summary::before {
  content: "−";
}

.topic-page__nav {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem 1.25rem;
  margin: 0 0 2rem;
}

.topic-page__nav a {
  color: var(--accent);
  font-size: 0.92rem;
  font-weight: 600;
  text-decoration: none;
}

.topic-page__nav a:hover {
  text-decoration: underline;
  text-underline-offset: 0.18em;
}

.topic-faq__title {
  color: var(--ink);
  font-size: 1.05rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  margin: 0 0 0.75rem;
}

.topic-faq-item {
  border-top: 1px solid var(--line);
  margin: 0;
  padding: 1rem 0;
}

.topic-faq-item:last-child {
  border-bottom: 1px solid var(--line);
}

.topic-faq-item summary {
  cursor: pointer;
  font-weight: 650;
  list-style: none;
}

.topic-faq-item summary::-webkit-details-marker {
  display: none;
}

.topic-faq-item p {
  color: var(--muted);
  line-height: 1.45;
  margin: 0.5rem 0 0;
}

.coll-list {
  list-style: none;
  margin: 0;
  max-width: var(--content);
  padding: 0;
}

.coll-item {
  border-top: 1px solid var(--line);
  padding: 0.95rem 0;
}

.coll-item:first-child {
  border-top: 0;
  padding-top: 0;
}

.coll-link {
  color: var(--ink);
  font-size: 1.02rem;
  font-weight: 650;
  letter-spacing: -0.02em;
  line-height: 1.3;
  text-decoration: none;
}

.coll-link:hover {
  color: var(--accent);
  text-decoration: underline;
  text-decoration-color: #4e2a4f59;
  text-underline-offset: 0.2em;
}

.coll-desc {
  color: var(--muted);
  font-size: 0.92rem;
  line-height: 1.45;
  margin: 0.35rem 0 0;
}

.coll-desc--meta {
  color: #10111466;
  font-size: 0.82rem;
  margin-top: 0.25rem;
}

.coll-empty {
  color: var(--muted);
  line-height: 1.5;
  margin: 1rem 0;
  max-width: var(--content);
}

.coll-empty .coll-section-title {
  margin-bottom: 0.75rem;
}

.coll-empty p {
  margin: 0 0 0.75rem;
}

.coll-empty a {
  color: var(--accent);
  font-weight: 600;
  text-decoration: none;
}

.coll-empty a:hover {
  text-decoration: underline;
  text-underline-offset: 0.18em;
}