/* 文章阅读布局：沿用全站配色与纸纹，调整正文和页边目录。 */
.reading-page .site-header {
  margin-bottom: 0;
}

.reading-page .container {
  padding: 76px 24px 112px;
}

.article-prose {
  max-width: 40rem;
  margin-inline: auto;
  font-size: 17px;
  line-height: 1.95;
  overflow-wrap: break-word;
}

.article-header {
  margin-bottom: 48px;
}

.article-header .article-kicker {
  margin: 0 0 18px;
  color: var(--ink-soft);
  font-family: var(--font-sans);
  font-size: 12px;
  line-height: 1.5;
  letter-spacing: 0.14em;
}

.article-prose .prose-title {
  margin: 0;
  font-family: var(--font-sans);
  font-size: clamp(30px, 3.3vw, 42px);
  font-weight: 600;
  letter-spacing: -0.025em;
  line-height: 1.45;
  text-wrap: balance;
}

.article-prose .prose-title::after {
  display: none;
}

.article-prose p {
  margin: 0 0 1.5em;
  text-align: start;
}

.article-prose h2,
.article-prose h3,
.article-prose h4 {
  padding: 0;
  border: 0;
  font-family: var(--font-sans);
  font-weight: 600;
  letter-spacing: 0;
  line-height: 1.5;
  scroll-margin-top: 88px;
}

.article-prose h2 {
  margin: 72px 0 24px;
  font-size: 24px;
}

.article-prose h3 {
  margin: 38px 0 16px;
  font-size: 18px;
}

.article-prose h4 {
  margin: 28px 0 12px;
  font-size: 16px;
}

.article-prose a {
  text-decoration-thickness: 1px;
  text-underline-offset: 4px;
}

.reading-page a:focus-visible {
  outline: 2px solid var(--leather);
  outline-offset: 4px;
}

.reading-page .toc {
  display: none;
}

.reading-page .toc::before {
  content: attr(data-label);
  display: block;
  margin: 0 0 14px 12px;
  color: var(--ink-soft);
  font-size: 11px;
  letter-spacing: 0.08em;
}

.reading-page .toc a {
  padding-block: 5px;
}

html:lang(en) .reading-page .toc a {
  white-space: normal;
  overflow-wrap: break-word;
}

.reading-page .toc a.toc-h3 {
  padding-left: 22px;
  opacity: 1;
}

.reading-page .toc a.is-active {
  font-weight: 500;
}

@media (min-width: 1200px) {
  .reading-page .toc {
    display: block;
    top: 152px;
    right: auto;
    left: calc(50% + 360px);
    width: 180px;
    max-height: calc(100vh - 192px);
    transform: none;
    scrollbar-width: thin;
  }
}

@media (max-width: 680px) {
  .reading-page .container {
    padding-top: 40px;
    padding-bottom: 72px;
  }

  .article-prose {
    font-size: 16px;
  }

  .article-header {
    margin-bottom: 36px;
  }

  .article-prose h2,
  .article-prose h3,
  .article-prose h4 {
    scroll-margin-top: 120px;
  }

  .article-prose h2 {
    margin-top: 56px;
    font-size: 22px;
  }

  .article-prose h3 {
    margin-top: 32px;
  }
}

@media print {
  .reading-page {
    background: #fff;
  }

  .reading-page .site-header {
    background: transparent;
  }

  .reading-page .container {
    padding: 28px 0;
  }

  .reading-page .toc {
    display: none;
  }

  .article-prose h2,
  .article-prose h3,
  .article-prose h4 {
    break-after: avoid;
  }
}