.blog-hero {
  padding: clamp(4.5rem, 9vw, 8rem) 0 clamp(3.5rem, 7vw, 6rem);
  border-bottom: 1px solid var(--color-line);
}

.blog-hero-inner {
  max-width: var(--content-main);
  text-align: center;
}

.blog-hero h1 {
  max-width: 13ch;
  margin: 0 auto;
  color: var(--color-brand);
  font-family: var(--font-display);
  font-size: clamp(2.75rem, 7vw, 4.5rem);
  font-weight: 900;
  line-height: 1.04;
  letter-spacing: -0.045em;
}

.blog-hero .eyebrow {
  margin-bottom: 1rem;
}

.blog-hero-summary {
  max-width: 44rem;
  margin: 1.5rem auto 0;
  color: var(--color-ink-soft);
  font-size: clamp(1rem, 2vw, 1.2rem);
  line-height: 1.8;
}

.blog-index-section {
  padding: var(--space-section) 0;
}

.blog-list-heading {
  display: flex;
  align-items: end;
  justify-content: space-between;
  gap: 2rem;
  margin-bottom: 1.5rem;
}

.blog-list-heading h2 {
  margin: 0;
  color: var(--color-ink);
  font-family: var(--font-display);
  font-size: clamp(1.8rem, 4vw, 3rem);
  line-height: 1.15;
}

.blog-list-heading .eyebrow {
  margin-bottom: 0.6rem;
}

.blog-result-count {
  flex: 0 0 auto;
  margin: 0;
  color: var(--color-ink-soft);
  font-family: var(--font-code);
  font-size: 0.88rem;
}

.blog-filter {
  display: flex;
  flex-wrap: wrap;
  gap: 0.65rem;
  margin-bottom: 2rem;
}

.blog-filter-button {
  min-height: 2.75rem;
  padding: 0.65rem 1rem;
  border: 1px solid var(--color-line);
  border-radius: var(--radius-round);
  background: var(--color-surface);
  color: var(--color-ink-soft);
  font: inherit;
  font-weight: 700;
  cursor: pointer;
}

.blog-filter-button:hover,
.blog-filter-button:focus-visible {
  border-color: var(--color-line-strong);
  color: var(--color-brand);
}

.blog-filter-button.is-active {
  border-color: var(--color-current);
  background: var(--color-surface-soft);
  color: var(--color-current);
}

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

.article-card {
  display: flex;
  min-width: 0;
  min-height: 100%;
  flex-direction: column;
  padding: clamp(1.35rem, 3vw, 2rem);
  border: 1px solid var(--color-line);
  border-radius: var(--radius-card);
  background: var(--color-surface);
}

.article-card-meta,
.related-post-meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.65rem;
  margin-bottom: 1rem;
  color: var(--color-ink-soft);
  font-family: var(--font-code);
  font-size: 0.78rem;
}

.article-card-meta .badge,
.related-post-meta .badge {
  max-width: 100%;
  overflow-wrap: anywhere;
}

.article-card h3 {
  margin: 0;
  color: var(--color-ink);
  font-family: var(--font-display);
  font-size: clamp(1.15rem, 2.4vw, 1.45rem);
  line-height: 1.45;
}

.article-card h3 a {
  color: inherit;
  text-decoration: none;
}

.article-card h3 a:hover,
.article-card h3 a:focus-visible {
  color: var(--color-brand);
  text-decoration: underline;
  text-decoration-thickness: 0.12em;
  text-underline-offset: 0.18em;
}

.article-card p {
  margin: 1rem 0 1.35rem;
  color: var(--color-ink-soft);
  line-height: 1.8;
}

.article-card-link {
  align-self: flex-start;
  margin-top: auto;
  color: var(--color-brand);
  font-weight: 800;
  text-decoration: none;
}

.article-card-link:hover,
.article-card-link:focus-visible {
  color: var(--color-brand-deep);
  text-decoration: underline;
  text-underline-offset: 0.22em;
}

.blog-empty {
  grid-column: 1 / -1;
  margin: 0;
  padding: 2.5rem;
  border: 1px solid var(--color-line);
  border-radius: var(--radius-card);
  background: var(--color-surface);
  color: var(--color-ink-soft);
  text-align: center;
}

.article-breadcrumb-wrap {
  margin-top: 1.5rem;
  padding-top: 0.25rem;
}

.breadcrumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.55rem;
  margin: 0;
  padding: 0;
  color: var(--color-ink-soft);
  font-size: 0.88rem;
  list-style: none;
}

.breadcrumb li {
  display: inline-flex;
  align-items: center;
  gap: 0.55rem;
  min-width: 0;
}

.breadcrumb li:not(:last-child)::after {
  color: var(--color-line-strong);
  content: "/";
}

.breadcrumb a {
  color: var(--color-brand);
  text-decoration: none;
}

.breadcrumb a:hover,
.breadcrumb a:focus-visible {
  text-decoration: underline;
  text-underline-offset: 0.2em;
}

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

.article-hero {
  padding: clamp(3rem, 7vw, 6rem) 0 clamp(2.75rem, 6vw, 5rem);
}

.article-hero-inner {
  max-width: var(--content-reading);
}

.article-hero-meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.75rem;
  margin-bottom: 1.25rem;
  color: var(--color-ink-soft);
  font-family: var(--font-code);
  font-size: 0.82rem;
}

.article-hero h1 {
  margin: 0;
  color: var(--color-brand);
  font-family: var(--font-display);
  font-size: clamp(2rem, 5vw, 2.6rem);
  font-weight: 900;
  line-height: 1.12;
  letter-spacing: -0.035em;
}

.article-lead {
  margin: 1.5rem 0 0;
  color: var(--color-ink-soft);
  font-size: clamp(1.05rem, 2vw, 1.25rem);
  line-height: 1.85;
}

.article-body {
  padding-bottom: var(--space-section);
}

.prose {
  max-width: var(--content-reading);
  color: var(--color-ink);
  font-size: 1.03rem;
  line-height: 1.9;
}

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

.prose h2 {
  margin: 3.5rem 0 1.15rem;
  color: var(--color-brand);
  font-family: var(--font-display);
  font-size: clamp(1.65rem, 3.7vw, 2.45rem);
  line-height: 1.25;
}

.prose h3 {
  margin: 2.3rem 0 0.9rem;
  color: var(--color-ink);
  font-family: var(--font-display);
  font-size: clamp(1.25rem, 2.7vw, 1.65rem);
  line-height: 1.4;
}

.prose p,
.prose ul,
.prose ol,
.prose dl {
  margin-top: 1rem;
  margin-bottom: 1rem;
}

.prose ul,
.prose ol {
  padding-left: 1.4rem;
}

.prose li {
  margin: 0.55rem 0;
  padding-left: 0.25rem;
}

.prose strong {
  color: var(--color-brand-deep);
}

.prose a {
  color: var(--color-brand);
  font-weight: 700;
  text-decoration-thickness: 0.1em;
  text-underline-offset: 0.2em;
}

.prose code {
  padding: 0.15em 0.4em;
  border-radius: var(--radius-small);
  background: var(--color-surface-soft);
  color: var(--color-brand-deep);
  font-family: var(--font-code);
  font-size: 0.9em;
  overflow-wrap: anywhere;
}

.prose pre {
  max-width: 100%;
  padding: 1.25rem;
  overflow-x: auto;
  border: 1px solid var(--color-line);
  border-radius: var(--radius-control);
  background: var(--color-surface-soft);
}

.prose pre code {
  padding: 0;
  border-radius: 0;
  background: transparent;
}

.prose blockquote {
  margin: 1.5rem 0;
  padding: 1rem 1.25rem;
  border-left: 0.3rem solid var(--color-current);
  border-radius: 0 var(--radius-control) var(--radius-control) 0;
  background: var(--color-surface-soft);
  color: var(--color-ink-soft);
}

.prose hr {
  margin: 3rem 0;
  border: 0;
  border-top: 1px solid var(--color-line);
}

.prose .data-table {
  display: block;
  width: 100%;
  max-width: 100%;
  overflow-x: auto;
}

.article-download-card {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 2rem;
  max-width: var(--content-reading);
  margin: 4rem auto 0;
  padding: clamp(1.4rem, 4vw, 2.25rem);
  border: 1px solid var(--color-line-strong);
  border-radius: var(--radius-card);
  background: var(--color-surface-soft);
}

.article-download-card h2 {
  margin: 0;
  color: var(--color-brand);
  font-family: var(--font-display);
  font-size: clamp(1.45rem, 3vw, 2rem);
}

.article-download-card p {
  margin: 0.65rem 0 0;
  color: var(--color-ink-soft);
  line-height: 1.7;
}

.article-download-card .btn {
  flex: 0 0 auto;
  border-color: var(--color-brand);
  background: var(--color-brand);
  color: var(--color-surface);
}

.article-related-section {
  padding: 0 0 var(--space-section);
}

.article-related-inner {
  max-width: var(--content-main);
}

.article-related-heading {
  margin: 0 0 1.5rem;
  color: var(--color-brand);
  font-family: var(--font-display);
  font-size: clamp(1.7rem, 3.5vw, 2.5rem);
}

#related-posts {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1rem;
}

.related-post-card {
  min-width: 0;
  padding: 1.35rem;
  border: 1px solid var(--color-line);
  border-radius: var(--radius-card);
  background: var(--color-surface);
}

.related-post-card h3 {
  margin: 0;
  color: var(--color-ink);
  font-family: var(--font-display);
  font-size: 1.08rem;
  line-height: 1.5;
}

.related-post-card h3 a {
  color: inherit;
  text-decoration: none;
}

.related-post-card h3 a:hover,
.related-post-card h3 a:focus-visible {
  color: var(--color-brand);
  text-decoration: underline;
  text-underline-offset: 0.18em;
}

.related-post-card p {
  margin: 0.85rem 0 0;
  color: var(--color-ink-soft);
  font-size: 0.94rem;
  line-height: 1.75;
}

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

.post-nav-card {
  display: flex;
  min-width: 0;
  flex-direction: column;
  gap: 0.55rem;
  padding: 1.25rem;
  border: 1px solid var(--color-line);
  border-radius: var(--radius-control);
  background: var(--color-surface);
  color: var(--color-ink);
  text-decoration: none;
}

.post-nav-card:hover,
.post-nav-card:focus-visible {
  border-color: var(--color-line-strong);
  color: var(--color-brand);
}

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

.post-nav-label {
  color: var(--color-ink-soft);
  font-family: var(--font-code);
  font-size: 0.78rem;
}

.post-nav-title {
  font-family: var(--font-display);
  font-weight: 800;
  line-height: 1.5;
}

.dl-fab {
  position: fixed;
  right: max(var(--gutter), 1rem);
  bottom: max(var(--gutter), 1rem);
  z-index: 20;
  display: inline-flex;
  align-items: center;
  gap: 0.65rem;
  max-width: calc(100vw - (var(--gutter) * 2));
  padding: 0.8rem 1rem;
  border: 1px solid var(--color-brand);
  border-radius: var(--radius-round);
  background: var(--color-brand);
  color: var(--color-surface);
  font-weight: 800;
  text-decoration: none;
}

.dl-fab:hover,
.dl-fab:focus-visible {
  background: var(--color-brand-deep);
}

.dl-fab-icon {
  display: inline-flex;
  width: 1.25rem;
  height: 1.25rem;
  flex: 0 0 auto;
}

.dl-fab-icon svg {
  width: 100%;
  height: 100%;
}

@media (max-width: 860px) {
  .article-grid,
  #related-posts {
    grid-template-columns: 1fr;
  }

  .blog-list-heading {
    align-items: flex-start;
    flex-direction: column;
    gap: 0.75rem;
  }

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

@media (max-width: 640px) {
  .blog-filter {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

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

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

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

  .breadcrumb [aria-current="page"] {
    white-space: normal;
  }

  .dl-fab {
    right: var(--gutter);
    bottom: var(--gutter);
  }
}