.article-page {
  overflow-x: hidden;
}

.article-return {
  position: sticky;
  inset-block-start: max(var(--space-2), env(safe-area-inset-top, 0px));
  z-index: 8;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-inline-size: 44px;
  min-block-size: 44px;
  margin-block: var(--space-2);
  margin-inline: max(var(--space-2), env(safe-area-inset-left, 0px)) var(--space-2);
  padding-inline: var(--space-2);
  border: 0;
  border-radius: 0;
  background: transparent;
  color: var(--text);
  text-decoration: none;
}

.article-shell {
  inline-size: min(100% - 2rem, 52rem);
  max-inline-size: 52rem;
  min-inline-size: 0;
  margin: 0 auto;
  padding: var(--space-3) 0 var(--space-4);
}

.post-header {
  padding-block-end: var(--space-3);
  margin-block-end: var(--space-4);
  border-block-end: 1px solid var(--border);
}

.post-title {
  margin: 0 0 var(--space-1);
  color: var(--heading);
  font-size: clamp(1.6rem, 4vw, 2.25rem);
  line-height: 1.25;
}

.post-meta,
.article-tags {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-1);
  color: var(--muted);
  font-size: 0.875rem;
}

.article-tags {
  margin-block-start: var(--space-2);
}

.post-content {
  min-inline-size: 0;
  font-family: var(--font-mono);
  font-size: 1rem;
  line-height: 1.8;
  overflow-wrap: anywhere;
}

.post-content h1,
.post-content h2,
.post-content h3,
.post-content h4,
.post-content h5,
.post-content h6 {
  margin-block: 1.8em 0.65em;
  color: var(--heading);
  line-height: 1.35;
  scroll-margin-block-start: var(--space-2);
}

.post-content p,
.post-content ul,
.post-content ol,
.post-content blockquote {
  margin-block: 0 1.15em;
}

.post-content blockquote {
  margin-inline: 0;
  padding-inline-start: var(--space-3);
  border-inline-start: 3px solid var(--border);
  color: var(--muted);
}

.post-content img {
  display: block;
  max-inline-size: 100%;
  block-size: auto;
  margin-inline: auto;
}

.post-content video,
.post-content iframe {
  max-inline-size: 100%;
}

.post-content table {
  width: 100%;
  border-collapse: separate;
  border-spacing: 0;
  border-radius: var(--radius-lg);
  margin: 1em 0;
}

.post-content th,
.post-content td {
  padding: 0.5em 0.75em;
  border: var(--border-thin);
  text-align: center;
  vertical-align: middle;
}

.post-content table thead tr:first-child th:first-child {
  border-top-left-radius: var(--radius-lg);
}

.post-content table thead tr:first-child th:last-child {
  border-top-right-radius: var(--radius-lg);
}

.post-content table tbody tr:last-child td:first-child {
  border-bottom-left-radius: var(--radius-lg);
}

.post-content table tbody tr:last-child td:last-child {
  border-bottom-right-radius: var(--radius-lg);
}

.post-content th {
  color: var(--heading);
  font-weight: 600;
}

.post-content td p {
  margin: 0;
}

.post-content hr {
  border: 0;
  border-block-start: 1px solid var(--border);
}

.article-pagination {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
  gap: var(--space-3);
  margin-block-start: var(--space-4);
  padding-block-start: var(--space-3);
  border-block-start: 1px solid var(--border);
}

.article-pagination a {
  min-inline-size: 0;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.article-pagination .next {
  text-align: end;
}

.article-toc.sidebar-right {
  display: block;
  inline-size: min(100% - 2rem, 52rem);
  max-inline-size: 52rem;
  margin: 0 auto var(--space-4);
  overflow: visible;
  border: 0;
  background: transparent;
  font-size: 1rem;
}

.article-toc .sidebar-right-inner {
  inline-size: 100%;
  padding: 0;
  overflow-x: hidden;
  overflow-y: auto;
  opacity: 1;
  transform: translateX(0);
  visibility: visible;
  transition:
    opacity var(--trans-fast) ease,
    transform var(--trans-base) ease,
    visibility 0s linear;
}

.article-toc .article-toc-toggle {
  display: inline-flex;
}

.article-toc.article-toc-hidden .sidebar-right-inner {
  opacity: 0;
  transform: translateX(calc(100% + 1rem));
  visibility: hidden;
  pointer-events: none;
  transition:
    opacity var(--trans-fast) ease,
    transform var(--trans-base) ease,
    visibility 0s linear var(--trans-base);
}

.article-toc .toc,
.article-toc .toc-child {
  list-style: none;
  padding: 0;
  margin: 0;
}

.article-toc .toc-child {
  overflow: hidden;
  opacity: 1;
  transition:
    max-height var(--trans-slow) ease,
    opacity var(--trans-fast) ease;
}

.article-toc .toc-child.collapsed {
  max-height: 0 !important;
  opacity: 0;
}

.article-toc .toc-item {
  line-height: 1.8;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.article-toc .toc-link {
  display: inline;
  padding: 0.15rem 0;
  color: var(--text);
  text-decoration: none;
}

.article-toc .toc-link:hover,
.article-toc .toc-link.active {
  color: var(--accent);
  text-decoration: none;
}

.article-toc .toc-link.active {
  font-weight: 600;
}

.article-toc .tree-line {
  color: var(--text-muted);
  font-family: var(--font-mono);
  font-size: 0.65rem;
  white-space: pre;
}

.article-toc .tree-toggle {
  padding: 0;
  margin-right: 0.15rem;
  border: 0;
  background: none;
  color: var(--text-muted);
  cursor: pointer;
  user-select: none;
  font-family: var(--font-mono);
  font-size: 0.6rem;
}

.article-toc .tree-toggle:hover {
  color: var(--accent);
}

@media (width < 88rem) {
  .article-page:has(.article-toc) {
    padding-block-end: calc(5rem + env(safe-area-inset-bottom, 0px));
  }

  .article-toc[data-article-toc-mounted="true"] {
    position: fixed;
    inset-inline-start: max(0.75rem, env(safe-area-inset-left, 0px));
    inset-block-end: max(0.75rem, env(safe-area-inset-bottom, 0px));
    z-index: 9;
    inline-size: min(26rem, calc(100vw - 1.5rem - env(safe-area-inset-left, 0px) - env(safe-area-inset-right, 0px)));
    margin: 0;
    padding-block-end: var(--float-size);
    pointer-events: none;
  }

  .article-toc[data-article-toc-mounted="true"] .sidebar-right-inner {
    max-block-size: min(60dvh, calc(100dvh - 7rem));
    margin-block-end: 0.75rem;
    padding: var(--space-2);
    border: 1px solid var(--border);
    border-radius: var(--radius-control);
    background: var(--bg);
    overscroll-behavior: contain;
    pointer-events: auto;
  }

  .article-toc[data-article-toc-mounted="true"].article-toc-hidden .sidebar-right-inner {
    transform: translateY(0.5rem);
    pointer-events: none;
  }
}

@media (min-width: 88rem) {
  .article-toc.sidebar-right {
    display: block;
    position: fixed;
    inset-block-start: 4.5rem;
    inset-inline-end: 1rem;
    z-index: 4;
    inline-size: min(calc((100vw - 52rem) / 2 - 4.5rem), var(--sidebar-width));
    max-inline-size: var(--sidebar-width);
    max-block-size: calc(100dvh - 6rem);
    margin: 0;
  }

  .article-toc .sidebar-right-inner {
    inline-size: 100%;
    max-block-size: inherit;
  }
}

@media (prefers-reduced-motion: reduce) {
  .article-toc .toc-child {
    transition: none;
  }

  .article-toc .sidebar-right-inner {
    transition: none;
  }
}