/* Editorial reading surfaces: stable paper, a clear measure, and native disclosures. */
.reading-feed > main,
.reading-article > main,
.reading-guide .matter-main {
  min-width: 0;
}
.reading-empty {
  padding-block: 24px 36px;
  border-block: 1px solid var(--line);
}
.reading-empty h2 {
  margin: 0 0 12px;
  font-size: clamp(1.4rem, 2.5vw, 1.8rem);
}
.reading-empty > p {
  max-width: 40rem;
  color: var(--text-muted);
  line-height: 1.8;
}
.reading-empty-actions {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 12px 24px;
  margin-block: 24px;
}
.reading-text-link,
.reading-guide-links a {
  color: var(--primary);
  text-decoration: underline;
  text-underline-offset: 4px;
}
.reading-guide-links {
  list-style: none;
  margin: 0;
  padding: 0;
}
.reading-guide-links li + li {
  margin-top: 8px;
}
.reading-guide-links a {
  display: inline-block;
  padding-block: 8px;
  line-height: 1.6;
}
.reading-guide-index {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  column-gap: 64px;
}
.reading-guide-item {
  display: block;
  padding-block: 28px;
  border-top: 1px solid var(--line);
}
.reading-guide-item h2 {
  color: var(--primary);
  font-size: clamp(1.35rem, 2vw, 1.65rem);
  line-height: 1.45;
  margin: 0 0 12px;
}
.reading-guide-item p {
  color: var(--text-muted);
  line-height: 1.8;
  margin: 0 0 16px;
}
.reading-guide-item:hover h2 {
  text-decoration: underline;
  text-underline-offset: 5px;
}
.reading-guide .matter-section {
  display: block;
  padding-block: 28px;
}
.reading-guide .matter-section > div {
  max-width: 70ch;
}
.reading-guide .matter-section h2 {
  font-size: clamp(1.4rem, 2vw, 1.75rem);
  line-height: 1.5;
  margin: 0 0 12px;
}
.reading-guide .matter-section p,
.reading-article .prose {
  font-size: 1.0625rem;
  line-height: 1.95;
  overflow-wrap: anywhere;
}
.reading-article .article-head,
.reading-article .article-body,
.reading-article main > .answer-box {
  max-width: 70ch;
}
.reading-article .article-head h1 {
  line-height: 1.35;
  overflow-wrap: anywhere;
  text-wrap: balance;
}
.reading-article .prose h2,
.reading-article .prose h3,
.reading-guide .matter-section {
  scroll-margin-top: 112px;
}
.reading-article .prose h2 {
  margin-top: 2em;
  padding-bottom: 0;
  border: 0;
  line-height: 1.5;
}
.reading-article .prose blockquote {
  border: 0;
  border-block: 1px solid var(--line);
  border-radius: 0;
  background: transparent;
  font-style: normal;
  padding: 20px 0;
}
.reading-article .prose img,
.reading-article .prose video,
.reading-article .prose iframe {
  max-width: 100%;
}
.reading-article .prose pre {
  max-width: 100%;
  overflow-x: auto;
  padding: 16px;
  background: var(--surface-2);
}
.reading-toc {
  margin-block: 0 28px;
  padding-block: 16px;
  border-block: 1px solid var(--line);
  max-width: 70ch;
}
.reading-toc[hidden] {
  display: none;
}
.reading-toc summary {
  cursor: pointer;
  color: var(--primary);
  font-weight: 700;
  min-height: 32px;
  padding-block: 4px;
}
.reading-toc[open] summary {
  margin-bottom: 12px;
}
.reading-toc .toc-link {
  border: 0;
  padding: 9px 0;
  text-decoration: underline;
  text-decoration-color: var(--line);
  text-underline-offset: 4px;
  line-height: 1.6;
}
.reading-toc .toc .lvl-h3 .toc-link {
  padding-inline-start: 20px;
}
.reading-toc .toc-link:hover {
  background: transparent;
  text-decoration-color: currentColor;
}
.reading-table-scroll {
  width: 100%;
  max-width: 100%;
  overflow-x: auto;
  overscroll-behavior-x: contain;
  margin-block: 24px;
  scrollbar-color: var(--text-muted) var(--surface-2);
}
.reading-table-scroll table {
  margin-block: 0;
  min-width: 36rem;
}
.reading-article .prose table {
  display: block;
  max-width: 100%;
  overflow-x: auto;
}
.reading-article .prose .reading-table-scroll table {
  display: table;
}
.reading-toc summary:focus-visible,
.reading-table-scroll:focus-visible,
.reading-guide-item:focus-visible {
  outline: 2px solid var(--primary);
  outline-offset: 4px;
}
@media (max-width: 767px) {
  .reading-guide-index {
    grid-template-columns: minmax(0, 1fr);
  }
  .reading-guide-item {
    padding-block: 24px;
  }
  .reading-feed .post-thumb {
    max-height: 220px;
  }
  .reading-article .article-head h1 {
    font-size: clamp(1.75rem, 7vw, 2.3rem);
  }
  .reading-guide .matter-section p,
  .reading-article .prose {
    font-size: 1rem;
    line-height: 1.9;
  }
  .reading-article > aside {
    border-top: 1px solid var(--line);
    padding-top: 32px;
  }
}
@media print {
  .reading-toc,
  .reading-article > aside {
    display: none;
  }
  .reading-article .prose,
  .reading-guide .matter-section p {
    font-size: 11pt;
    line-height: 1.6;
  }
  .reading-table-scroll {
    overflow: visible;
  }
  .reading-table-scroll table {
    min-width: 0;
  }
}