.blog-list-hero {
  position: relative;
  overflow: hidden;
  padding-block: 4rem;
  color: var(--color-text);
  background-color: var(--color-bg);
  background-image:
    linear-gradient(var(--color-grid) 1px, transparent 1px),
    linear-gradient(90deg, var(--color-grid) 1px, transparent 1px);
  background-size: 72px 72px;
}

.blog-list-hero::after {
  position: absolute;
  right: 8%;
  bottom: -7rem;
  width: 18rem;
  height: 18rem;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-pill);
  content: "";
  opacity: 0.65;
}

.blog-list-hero .wrap {
  position: relative;
  z-index: 1;
}

.blog-kicker,
.section-eyebrow {
  margin: 0 0 0.75rem;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.blog-kicker {
  color: var(--color-accent);
}

.section-eyebrow {
  color: var(--color-ink-muted);
}

.blog-list-hero h1 {
  max-width: 100%;
  margin: 0;
  font-family: var(--font-display);
  font-size: clamp(2rem, 1.25rem + 2.4vw, 3rem);
  line-height: 1.15;
  letter-spacing: -0.035em;
}

.blog-list-lead {
  max-width: 42rem;
  margin: 1.25rem 0 0;
  color: var(--color-text-muted);
  font-size: clamp(1rem, 0.94rem + 0.3vw, 1.125rem);
  line-height: 1.75;
}

.blog-index-section {
  padding-block: 4.5rem;
  color: var(--color-ink);
  background: var(--color-paper);
}

.blog-list-heading {
  display: flex;
  align-items: end;
  justify-content: space-between;
  gap: 2rem;
  margin-bottom: 2rem;
}

.blog-list-heading h2 {
  margin: 0;
  font-family: var(--font-display);
  font-size: clamp(1.75rem, 1.45rem + 1vw, 2.25rem);
  line-height: 1.2;
}

.tag-filter {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.tag-filter-button {
  min-height: 2.5rem;
  padding: 0.6rem 1rem;
  border: 1px solid var(--color-paper-border);
  border-radius: var(--radius-pill);
  color: var(--color-ink-muted);
  background: var(--color-paper-panel);
  font-family: var(--font-mono);
  font-size: 0.8125rem;
  cursor: pointer;
  transition:
    color 160ms ease,
    background-color 160ms ease,
    border-color 160ms ease,
    transform 160ms ease;
}

.tag-filter-button:hover {
  color: var(--color-ink);
  border-color: var(--color-ink-muted);
  transform: translateY(-1px);
}

.tag-filter-button:focus-visible {
  outline: 2px solid var(--color-accent-deep);
  outline-offset: 3px;
}

.tag-filter-button.is-active {
  color: var(--color-ink);
  border-color: var(--color-accent);
  background: var(--color-accent);
}

.post-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1.25rem;
}

.post-card,
.related-post-card {
  display: flex;
  min-width: 0;
  border: 1px solid var(--color-paper-border);
  border-radius: var(--radius-large);
  color: var(--color-ink);
  background: var(--color-paper-panel);
  box-shadow: var(--shadow-soft);
}

.post-card {
  flex-direction: column;
  min-height: 20rem;
  padding: 1.5rem;
}

.post-card-meta,
.related-post-meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.65rem;
  color: var(--color-ink-muted);
  font-family: var(--font-mono);
  font-size: 0.75rem;
}

.post-card-meta span,
.related-post-meta span {
  padding: 0.25rem 0.55rem;
  border-radius: var(--radius-pill);
  color: var(--color-ink);
  background: var(--color-accent);
}

.post-card h3 {
  margin: 1.25rem 0 0.75rem;
  font-family: var(--font-display);
  font-size: clamp(1.2rem, 1.08rem + 0.45vw, 1.5rem);
  line-height: 1.42;
}

.post-card p {
  margin: 0;
  color: var(--color-ink-muted);
  line-height: 1.75;
}

.post-card-link,
.related-post-link {
  color: var(--color-ink);
  font-weight: 700;
  text-decoration: none;
}

.post-card-link {
  align-self: flex-start;
  margin-top: auto;
  padding-top: 1.5rem;
}

.post-card-link:hover,
.related-post-link:hover {
  text-decoration: underline;
  text-underline-offset: 0.25em;
}

.blog-empty-state {
  margin: 2rem 0 0;
  padding: 2rem;
  border: 1px dashed var(--color-paper-border);
  border-radius: var(--radius-medium);
  color: var(--color-ink-muted);
  text-align: center;
}

/* 面包屑同时兼容文章生成器可能使用的常见类名。 */
.blog-breadcrumb,
nav.breadcrumb,
nav.breadcrumbs,
main > nav.reading-wrap,
main > nav.article-breadcrumb,
main > .reading-wrap:first-child > nav {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  min-width: 0;
  margin-top: 0;
  margin-bottom: 1.25rem;
  overflow: hidden;
  color: var(--color-ink-muted);
  font-size: 0.8125rem;
  line-height: 1.4;
  white-space: nowrap;
}

main > nav.reading-wrap,
main > nav.article-breadcrumb,
main > .reading-wrap:first-child {
  padding-top: 1.5rem;
}

.blog-breadcrumb a,
nav.breadcrumb a,
nav.breadcrumbs a {
  flex: 0 0 auto;
  color: var(--color-ink-muted);
  text-decoration: none;
  opacity: 0.7;
}

.blog-breadcrumb a:hover,
nav.breadcrumb a:hover,
nav.breadcrumbs a:hover {
  color: var(--color-ink);
  opacity: 1;
}

.blog-breadcrumb .separator,
nav.breadcrumb .separator,
nav.breadcrumbs .separator {
  flex: 0 0 auto;
  opacity: 0.4;
}

.blog-breadcrumb [aria-current="page"],
nav.breadcrumb [aria-current="page"],
nav.breadcrumbs [aria-current="page"],
main > .reading-wrap:first-child > nav [aria-current="page"] {
  flex: 0 1 auto;
  min-width: 0;
  max-width: 30ch;
  overflow: hidden;
  color: var(--color-ink-muted);
  text-overflow: ellipsis;
}

.article-breadcrumb-wrap {
  padding-top: 1.25rem;
  padding-bottom: 0;
}

.article-breadcrumb-wrap .blog-breadcrumb,
.article-breadcrumb-wrap nav.breadcrumb,
.article-breadcrumb-wrap nav.breadcrumbs {
  margin-top: 0;
}

.article-hero {
  padding-top: 0;
  padding-bottom: 0.75rem;
  color: var(--color-ink);
  background: var(--color-paper);
}

.article-hero-meta,
.article-meta,
.article-hero .post-card-meta,
main > .reading-wrap:first-child > header .post-card-meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.65rem;
  margin: 0 0 0.875rem;
  color: var(--color-ink-muted);
  font-family: var(--font-mono);
  font-size: 0.8125rem;
}

main > .reading-wrap:first-child > header {
  padding-bottom: 0.75rem;
  color: var(--color-ink);
  background: var(--color-paper);
}

.article-hero-meta .article-tag {
  padding: 0.25rem 0.6rem;
  border-radius: var(--radius-pill);
  color: var(--color-ink);
  background: var(--color-accent);
}

.article-hero h1,
main > .reading-wrap:first-child > header h1 {
  max-width: 100%;
  margin: 0 0 0.75rem;
  font-family: var(--font-display);
  font-size: clamp(1.5rem, 1.1rem + 1.4vw, 2rem);
  line-height: 1.32;
  letter-spacing: -0.025em;
}

.article-lead,
.article-summary,
.article-hero h1 + p,
main > .reading-wrap:first-child > header h1 + p {
  max-width: var(--reading-width);
  margin: 0.75rem 0 0;
  color: var(--color-ink-muted);
  font-size: clamp(0.9375rem, 0.85rem + 0.45vw, 1.125rem);
  line-height: 1.7;
}

main:has(> article.prose) {
  background: var(--color-paper);
}

.article-body,
.prose {
  color: var(--color-ink);
  font-size: 1rem;
  line-height: 1.82;
}

article.reading-wrap.prose {
  padding-top: 1.25rem;
}

article.reading-wrap.section.prose {
  padding-bottom: var(--section-space);
}

.article-body > section {
  padding-block: 0;
}

.article-body > section + section {
  margin-top: 2.5rem;
}

.article-body h2,
.prose h2 {
  margin: 2.5rem 0 1rem;
  font-family: var(--font-display);
  font-size: clamp(1.35rem, 1.2rem + 0.5vw, 1.5rem);
  line-height: 1.35;
}

.article-body > h2:first-child,
.article-body > section:first-child > h2:first-child,
.prose > h2:first-child,
.prose > section:first-child > h2:first-child {
  margin-top: 0;
}

.article-body h3,
.prose h3 {
  margin: 2rem 0 0.75rem;
  font-family: var(--font-display);
  font-size: clamp(1.125rem, 1.05rem + 0.3vw, 1.25rem);
  line-height: 1.4;
}

.article-body p,
.prose p {
  margin: 0 0 1.15rem;
}

.article-body ul,
.article-body ol,
.prose ul,
.prose ol {
  margin: 0 0 1.25rem;
  padding-left: 1.4rem;
}

.article-body li + li,
.prose li + li {
  margin-top: 0.5rem;
}

.article-body a:not([class*="btn"]):not([class*="button"]),
.prose a:not([class*="btn"]):not([class*="button"]) {
  color: var(--color-ink);
  font-weight: 650;
  text-decoration-color: var(--color-accent-deep);
  text-decoration-thickness: 0.12em;
  text-underline-offset: 0.2em;
}

.article-body a:not([class*="btn"]):not([class*="button"]):hover,
.prose a:not([class*="btn"]):not([class*="button"]):hover {
  text-decoration-thickness: 0.2em;
}

.article-body blockquote,
.prose blockquote {
  margin: 1.5rem 0;
  padding: 1rem 1.25rem;
  border-left: 4px solid var(--color-accent);
  border-radius: 0 var(--radius-small) var(--radius-small) 0;
  color: var(--color-ink-muted);
  background: var(--color-paper-soft);
}

.article-body code,
.prose code {
  border: 1px solid var(--color-paper-border);
  border-radius: var(--radius-small);
  color: var(--color-ink);
  background: var(--color-paper-soft);
  font-family: var(--font-mono);
  font-size: 0.9em;
}

.article-body :not(pre) > code,
.prose :not(pre) > code {
  padding: 0.12em 0.4em;
}

.article-body pre,
.prose pre {
  margin: 1.5rem 0;
  padding: 1.25rem;
  overflow-x: auto;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-medium);
  color: var(--color-text);
  background: var(--color-panel);
  box-shadow: var(--shadow-soft);
}

.article-body pre code,
.prose pre code {
  padding: 0;
  border: 0;
  color: inherit;
  background: transparent;
  font-family: var(--font-mono);
  line-height: 1.7;
}

.article-download-card {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.5rem;
  margin-top: 2.5rem;
  padding: 1.5rem;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-large);
  color: var(--color-text);
  background: var(--color-panel);
  box-shadow: var(--shadow-card);
}

.article-download-card h2 {
  margin: 0 0 0.5rem;
  color: var(--color-text);
  font-size: clamp(1.25rem, 1.1rem + 0.5vw, 1.5rem);
}

.article-download-card p {
  margin: 0;
  color: var(--color-text-muted);
}

.article-download-actions {
  display: flex;
  flex: 0 0 auto;
  flex-wrap: wrap;
  gap: 0.65rem;
}

#post-nav,
#related-posts {
  width: min(calc(100% - (2 * var(--page-gutter))), var(--reading-width));
  margin-right: auto;
  margin-left: auto;
}

#related-posts {
  margin-top: 3rem;
}

#related-posts > h2 {
  margin: 0 0 1.25rem;
  color: var(--color-ink);
  font-size: clamp(1.35rem, 1.2rem + 0.5vw, 1.5rem);
}

.related-post-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(300px, 1fr));
  gap: 1rem;
}

.related-post-card {
  flex-direction: column;
  min-width: 300px;
  padding: 1.25rem;
}

.related-post-card h3 {
  margin: 1rem 0 0.65rem;
  font-size: 1.0625rem;
  line-height: 1.5;
}

.related-post-card p {
  margin: 0 0 1rem;
  color: var(--color-ink-muted);
  font-size: 0.9375rem;
  line-height: 1.7;
}

.related-post-link {
  align-self: flex-start;
  margin-top: auto;
}

#post-nav {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1rem;
  margin-top: 2rem;
  padding-top: 2rem;
  border-top: 1px solid var(--color-paper-border);
}

.post-nav-link {
  display: flex;
  min-width: 0;
  flex-direction: column;
  gap: 0.5rem;
  padding: 1.25rem;
  border: 1px solid var(--color-paper-border);
  border-radius: var(--radius-medium);
  color: var(--color-ink);
  background: var(--color-paper-panel);
  text-decoration: none;
}

.post-nav-link:hover {
  border-color: var(--color-ink-muted);
}

.post-nav-direction {
  color: var(--color-ink-muted);
  font-family: var(--font-mono);
  font-size: 0.75rem;
}

.post-nav-link strong {
  overflow-wrap: anywhere;
  line-height: 1.55;
}

.post-nav-next {
  grid-column: 2;
  text-align: right;
}

@media (max-width: 760px) {
  .blog-list-hero {
    padding-block: 3rem;
  }

  .blog-list-hero h1 {
    font-size: clamp(1.75rem, 1.55rem + 1vw, 1.875rem);
  }

  .blog-index-section {
    padding-block: 3.25rem;
  }

  .blog-list-heading {
    align-items: stretch;
    flex-direction: column;
    gap: 1.25rem;
  }

  .post-grid {
    grid-template-columns: 1fr;
  }

  .post-card {
    min-height: 0;
  }

  .article-hero {
    padding-top: 0;
    padding-bottom: 0.75rem;
  }

  .article-download-card {
    align-items: stretch;
    flex-direction: column;
  }

  .article-download-actions {
    width: 100%;
  }

  .related-post-grid {
    grid-template-columns: 1fr;
  }

  .related-post-card {
    min-width: 0;
  }

  #post-nav {
    grid-template-columns: 1fr;
  }

  .post-nav-next {
    grid-column: 1;
    text-align: left;
  }
}

@media (max-width: 460px) {
  .tag-filter {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .tag-filter-button {
    width: 100%;
  }

  .post-card {
    padding: 1.25rem;
  }

  .article-hero h1 {
    font-size: 1.5rem;
  }

  .article-download-actions {
    flex-direction: column;
  }
}