/* A reading layout built on the landing page's shared colors, type, and shell. */
.reading-main {
  margin-top: 96px;
  padding-top: 64px;
}

.reading-breadcrumb,
.reading-hero,
.reading-grid,
.related-reading {
  max-width: 1000px;
  margin-inline: auto;
}

.reading-breadcrumb {
  display: flex;
  align-items: center;
  gap: 12px;
  color: var(--quiet);
  font-size: 12px;
  line-height: 16px;
  margin-bottom: 40px;
}

.reading-breadcrumb a {
  flex: none;
}

.reading-breadcrumb [aria-current] {
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.reading-hero {
  padding-bottom: 64px;
}

.reading-hero h1 {
  max-width: 680px;
  font-size: 60px;
  line-height: 1;
  letter-spacing: -.05em;
  overflow-wrap: break-word;
  margin-block: 24px;
  padding-bottom: 8px;
  background: linear-gradient(90deg, #000, #666);
  background-clip: text;
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.reading-description {
  max-width: 680px;
  color: var(--muted);
  font-size: 18px;
  line-height: 28px;
  margin-bottom: 24px;
}

.reading-meta {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 8px 24px;
  color: var(--quiet);
  font-size: 12px;
  line-height: 16px;
}

.reading-byline strong {
  color: var(--ink);
  font-weight: 500;
}

.reading-byline a {
  text-decoration: underline;
  text-underline-offset: 4px;
}

.reading-action {
  margin-top: 32px;
  gap: 24px;
}

.reading-action>span {
  color: var(--copper);
}

.reading-status {
  max-width: 680px;
  margin-top: 32px;
  background: var(--soft);
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 16px;
  font-size: 14px;
  line-height: 20px;
  color: var(--muted);
}

.reading-status>span {
  display: block;
  font-size: 12px;
  line-height: 16px;
  color: var(--copper);
  font-weight: 600;
  margin-bottom: 8px;
}

.reading-grid {
  display: grid;
  grid-template-columns: minmax(0, 680px) 240px;
  gap: 80px;
  align-items: start;
}

.reading-grid-short {
  grid-template-columns: minmax(0, 680px);
}

.reading-prose {
  min-width: 0;
  font-size: 18px;
  line-height: 28px;
  overflow-wrap: break-word;
}

.reading-prose p,
.reading-prose ul,
.reading-prose ol,
.reading-prose dl {
  margin-block: 0 24px;
}

.reading-prose h2 {
  font-size: 30px;
  line-height: 36px;
  letter-spacing: -.025em;
  margin-block: 64px 24px;
}

.reading-prose h3 {
  font-size: 24px;
  line-height: 32px;
  letter-spacing: -.02em;
  margin-block: 40px 16px;
}

.reading-prose h4,
.reading-prose h5,
.reading-prose h6 {
  font-size: 20px;
  line-height: 28px;
  font-weight: 500;
  margin-block: 32px 12px;
}

.reading-prose> :first-child {
  margin-top: 0;
}

.reading-prose :is(h2,h3,h4,h5,h6) {
  scroll-margin-top: 128px;
}

.reading-prose strong {
  font-weight: 600;
}

.reading-prose em {
  font-style: normal;
}

.reading-prose a:not(.heading-anchor) {
  color: var(--olive);
  text-decoration: underline;
  text-decoration-color: #a5af94;
  text-underline-offset: 4px;
  text-decoration-thickness: 1px;
}

.reading-prose a:not(.heading-anchor):hover {
  color: var(--copper);
  text-decoration-color: currentColor;
}

.reading-prose ul,
.reading-prose ol {
  padding-left: 24px;
}

.reading-prose li {
  margin-block: 12px;
  padding-left: 4px;
}

.reading-prose li::marker {
  color: var(--copper);
}

.reading-prose li>p,
.reading-prose li>ul,
.reading-prose li>ol {
  margin-block: 12px;
}

.reading-prose blockquote {
  margin: 32px 0;
  padding: 24px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--soft);
  color: var(--muted);
}

.reading-prose blockquote> :last-child {
  margin-bottom: 0;
}

.reading-prose hr {
  border: 0;
  height: 1px;
  background: var(--line);
  margin-block: 48px;
}

.reading-prose code {
  font-family: ui-monospace, monospace;
  font-size: 14px;
  line-height: 20px;
  padding: 2px 4px;
  border-radius: 4px;
  background: var(--soft);
  overflow-wrap: anywhere;
}

.reading-prose pre {
  background: var(--soft);
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 24px;
  margin-block: 32px;
  overflow: auto;
  max-width: 100%;
}

.reading-prose pre code {
  padding: 0;
  background: none;
  overflow-wrap: normal;
}

.reading-prose .hljs-comment { color: var(--quiet); }
.reading-prose :is(.hljs-keyword,.hljs-selector-tag,.hljs-built_in) { color: var(--copper); }
.reading-prose :is(.hljs-string,.hljs-title,.hljs-attr) { color: var(--olive); }

.reading-table {
  overflow-x: auto;
  max-width: 100%;
  margin-block: 32px;
  border: 1px solid var(--line);
  border-radius: 8px;
}

.reading-prose table {
  width: 100%;
  min-width: 560px;
  border-collapse: collapse;
  font-size: 14px;
  line-height: 20px;
}

.reading-prose :is(th,td) {
  text-align: left;
  vertical-align: top;
  padding: 16px;
}

.reading-prose th {
  background: var(--soft);
  color: var(--muted);
  font-weight: 600;
}

.reading-prose tr+tr,
.reading-prose tbody tr:first-child {
  border-top: 1px solid var(--line);
}

.reading-prose figure,
.reading-prose p:has(>img),
.reading-prose p:has(>a>img) {
  margin-block: 40px;
}

.reading-prose img {
  height: auto;
  margin-inline: auto;
  border-radius: 8px;
}

.reading-prose figcaption {
  font-size: 14px;
  line-height: 20px;
  color: var(--muted);
  margin-top: 16px;
}

.reading-prose .wave-figure {
  max-width: 432px;
  margin-inline: auto;
}

.reading-prose :is(.katex-display,section:has(>eqn)) {
  display: block;
  overflow-x: auto;
  overflow-y: hidden;
  max-width: 100%;
  padding-block: 8px;
  margin-block: 24px;
}

.reading-prose .heading-anchor {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 24px;
  color: var(--copper);
  font-size: 18px;
  line-height: 28px;
  font-weight: 400;
  opacity: 0;
  transition: opacity .3s var(--curve);
}

.reading-prose :is(h2,h3,h4,h5,h6):hover .heading-anchor,
.reading-prose .heading-anchor:focus-visible {
  opacity: 1;
}

.reading-rail {
  position: sticky;
  top: 128px;
  min-width: 0;
}

.reading-contents {
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 16px;
  background: var(--paper);
}

.reading-contents summary {
  display: flex;
  justify-content: space-between;
  gap: 16px;
  cursor: pointer;
  list-style: none;
  font-size: 12px;
  line-height: 16px;
  font-weight: 600;
  color: var(--muted);
}

.reading-contents summary::-webkit-details-marker { display: none; }
.reading-contents summary::marker { content: ''; }
.reading-contents summary>span { color: var(--copper); transition: transform .5s var(--curve); }
.reading-contents[open] summary>span { transform: rotate(90deg); }

.reading-contents nav {
  margin-top: 16px;
  max-height: calc(100svh - 272px);
  overflow-y: auto;
  scrollbar-width: thin;
}

.reading-contents ol {
  margin: 0;
  padding: 0;
  list-style: none;
}

.reading-contents a {
  display: block;
  padding: 8px;
  border-radius: 4px;
  font-size: 14px;
  line-height: 20px;
  color: var(--muted);
}

.reading-contents .toc-subsection a {
  padding-left: 16px;
  font-size: 12px;
  line-height: 16px;
}

.reading-contents a:hover,
.reading-contents a[aria-current] {
  background: var(--soft);
  color: var(--olive);
}

.reading-back {
  display: flex;
  justify-content: space-between;
  margin-top: 16px;
  padding: 8px 16px;
  color: var(--quiet);
  font-size: 12px;
  line-height: 16px;
}

.related-reading {
  display: grid;
  grid-template-columns: 1fr 1.6fr;
  gap: 64px;
  padding-block: 80px;
  margin-top: 64px;
  border-top: 1px solid var(--line);
}

.related-reading h2 {
  font-size: 36px;
  line-height: 40px;
  letter-spacing: -.04em;
  margin-top: 24px;
}

.related-list>a {
  display: grid;
  grid-template-columns: 24px minmax(0,1fr) 24px;
  align-items: start;
  gap: 16px;
  padding-block: 24px;
}

.related-list>a:first-child { padding-top: 0; }
.related-list>a+a { border-top: 1px solid var(--line); }
.related-index { color: var(--quiet); font-size: 12px; line-height: 16px; padding-top: 4px; }
.related-arrow { color: var(--copper); transition: transform .5s var(--curve); }
.related-list>a:hover .related-arrow { transform: translate(2px,-2px); }
.related-list h3 { font-size: 20px; line-height: 28px; letter-spacing: -.02em; }
.related-list p { font-size: 14px; line-height: 20px; color: var(--muted); margin-top: 8px; }

.poster-preview {
  border: 1px solid var(--line);
  border-radius: 8px;
  overflow: hidden;
  margin-bottom: 24px;
}

.poster-preview object {
  display: block;
  width: 100%;
  aspect-ratio: 3/4;
}

.poster-preview p { padding: 24px; }
.desktop-nav a[aria-current="page"] { color: var(--copper); text-decoration: underline; text-underline-offset: 8px; }

@media (max-width:1119px) {
  .reading-grid { display: flex; flex-direction: column; gap: 40px; max-width: 680px; }
  .reading-breadcrumb,.reading-hero,.related-reading { max-width: 680px; }
  .reading-hero h1 { font-size: 48px; line-height: 1; }
  .reading-rail { order: -1; position: static; width: 100%; }
  .reading-back { display: none; }
  .reading-contents nav { max-height: 40svh; }
  .related-reading { grid-template-columns: 1fr; gap: 32px; }
}

@media (max-width:639px) {
  .reading-main { padding-top: 32px; }
  .reading-breadcrumb { margin-bottom: 32px; gap: 8px; }
  .reading-breadcrumb [aria-current] { max-width: 160px; }
  .reading-hero { padding-bottom: 40px; }
  .reading-hero h1 { font-size: 36px; line-height: 40px; margin-block: 16px; }
  .reading-description { font-size: 16px; line-height: 24px; }
  .reading-meta { gap: 8px 16px; }
  .reading-byline { flex-basis: 100%; }
  .reading-action { font-size: 14px; line-height: 20px; gap: 16px; }
  .reading-prose { font-size: 16px; line-height: 24px; width: 100%; }
  .reading-prose h2 { font-size: 24px; line-height: 32px; margin-top: 48px; }
  .reading-prose h3 { font-size: 20px; line-height: 28px; margin-top: 32px; }
  .reading-prose :is(h4,h5,h6) { font-size: 18px; line-height: 28px; }
  .reading-prose :is(blockquote,pre) { padding: 16px; }
  .related-reading { margin-top: 48px; padding-block: 48px; }
  .related-reading h2 { font-size: 30px; line-height: 36px; margin-top: 16px; }
}

@media (hover:none) {
  .reading-prose .heading-anchor { opacity: .5; }
}

@media print {
  .reading-page { background: white; color: black; }
  .reading-page :is(.site-header,.mobile-navigation,.site-footer,.skip-link,.reading-rail,.related-reading,.heading-anchor,.reading-action) { display: none; }
  .reading-main { width: 100%; max-width: none; margin: 0; padding: 0; }
  .reading-hero { padding-bottom: 32px; }
  .reading-hero h1 { background: none; -webkit-text-fill-color: black; font-size: 36px; line-height: 40px; }
  .reading-grid { display: block; }
  .reading-prose { font-size: 12px; line-height: 20px; }
  .reading-prose :is(figure,pre,table) { break-inside: avoid; }
  .reading-table { overflow: visible; }
}