.blog-index-hero {
  padding-block: clamp(4rem, 9vw, 7rem);
  background: var(--color-deep);
  color: var(--color-ink-96);
}

.blog-index-hero .eyebrow {
  color: var(--color-accent);
}

.blog-index-hero h1 {
  max-width: 16ch;
  margin-block: 0.75rem 1.25rem;
  color: var(--color-ink-96);
  font-family: var(--font-display);
  font-size: clamp(1.875rem, 4vw, 3rem);
  font-weight: 800;
  line-height: 1.04;
  letter-spacing: -0.04em;
}

.blog-index-hero__lead {
  max-width: 42rem;
  margin: 0;
  color: var(--color-ink-82);
  font-size: clamp(1rem, 1.5vw, 1.2rem);
  line-height: 1.75;
}

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

.blog-index-toolbar {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 2rem;
  margin-bottom: 2.5rem;
}

.blog-index-toolbar h2 {
  margin-block: 0.5rem 0;
  font-family: var(--font-display);
  font-size: clamp(1.75rem, 3vw, 2.5rem);
  line-height: 1.2;
}

.blog-filter {
  display: flex;
  flex-wrap: wrap;
  justify-content: flex-end;
  gap: 0.625rem;
}

.blog-filter__button {
  min-height: 2.5rem;
  padding: 0.55rem 0.9rem;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-pill);
  background: var(--color-page);
  color: var(--color-muted);
  font: inherit;
  cursor: pointer;
  transition:
    border-color 160ms ease,
    background-color 160ms ease,
    color 160ms ease;
}

.blog-filter__button:hover {
  border-color: var(--color-accent-dark);
  color: var(--color-accent-dark);
}

.blog-filter__button:focus-visible {
  outline: 2px solid var(--color-link);
  outline-offset: 2px;
}

.blog-filter__button.is-active {
  border-color: var(--color-accent);
  background: var(--color-accent);
  color: var(--color-deep);
  font-weight: 700;
}

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

.post-card {
  display: flex;
  min-width: 0;
  min-height: 20rem;
  flex-direction: column;
  padding: clamp(1.25rem, 3vw, 2rem);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-large);
  background: var(--color-page);
}

.post-card__meta,
.related-post-card__meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.65rem;
  color: var(--color-muted);
  font-family: var(--font-mono);
  font-size: 0.8125rem;
}

.post-card h3 {
  margin-block: 1.25rem 0.85rem;
  font-family: var(--font-display);
  font-size: clamp(1.25rem, 2vw, 1.55rem);
  line-height: 1.42;
}

.post-card h3 a,
.related-post-card h3 a {
  color: var(--color-text);
  text-decoration: none;
}

.post-card h3 a:hover,
.related-post-card h3 a:hover {
  color: var(--color-accent-dark);
}

.post-card p {
  margin: 0 0 1.5rem;
  color: var(--color-muted);
  line-height: 1.8;
}

.post-card__link {
  align-self: flex-start;
  margin-top: auto;
  color: var(--color-link);
  font-weight: 700;
  text-decoration: none;
}

.post-card__link:hover {
  text-decoration: underline;
  text-underline-offset: 0.2em;
}

.blog-empty-state {
  padding: 3rem;
  border: 1px dashed var(--color-border);
  border-radius: var(--radius-large);
  background: var(--color-panel);
  color: var(--color-muted);
  text-align: center;
}

.article-page {
  padding-bottom: 4rem;
}

.article-page .article-breadcrumb-wrap,
.article-page .breadcrumb-wrap {
  padding-top: 1.25rem;
}

.blog-breadcrumb,
nav.breadcrumb,
nav.breadcrumbs {
  display: flex;
  min-width: 0;
  align-items: center;
  gap: 0.5rem;
  margin-top: 1.25rem;
  margin-bottom: 1.25rem;
  overflow: hidden;
  color: var(--color-muted);
  font-size: 0.8125rem;
  line-height: 1.5;
  white-space: nowrap;
}

.blog-breadcrumb a,
nav.breadcrumb a,
nav.breadcrumbs a {
  flex: 0 0 auto;
  color: var(--color-muted);
  text-decoration: none;
  opacity: 0.6;
}

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

.blog-breadcrumb .breadcrumb-separator,
nav.breadcrumb .breadcrumb-separator,
nav.breadcrumbs .breadcrumb-separator {
  flex: 0 0 auto;
  opacity: 0.35;
}

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

.article-hero {
  padding-block: 0 2rem;
}

.article-hero > .reading-wrap,
.article-hero.reading-wrap {
  display: flex;
  flex-direction: column;
}

.article-hero .article-meta,
.article-hero .post-card__meta {
  margin-bottom: 0.875rem;
}

.article-hero p {
  margin-bottom: 0;
}

.article-hero .article-meta,
.article-meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.65rem;
  margin-bottom: 0.875rem;
  color: var(--color-muted);
  font-family: var(--font-mono);
  font-size: 0.8125rem;
  line-height: 1.5;
}

.article-hero h1 {
  max-width: 100%;
  margin-block: 0 0.75rem;
  color: var(--color-text);
  font-family: var(--font-display);
  font-size: clamp(1.5rem, 1.1rem + 1.4vw, 2rem);
  font-weight: 800;
  line-height: 1.32;
  letter-spacing: -0.02em;
}

.article-lead,
.article-summary,
.article-hero__lead {
  max-width: var(--reading-width);
  margin-top: 1.25rem;
  margin-bottom: 0;
  color: var(--color-muted);
  font-size: clamp(0.9375rem, 0.85rem + 0.45vw, 1.125rem);
  line-height: 1.7;
}

.article-body,
.prose {
  color: var(--color-text);
  font-size: 1rem;
  line-height: 1.85;
}

.article-body > section,
.prose > section {
  padding-block: 0;
  margin-block: 0 2.75rem;
}

.article-body > section + section,
.prose > section + section {
  margin-top: 0;
}

.article-body h2,
.prose h2 {
  margin-block: 2.75rem 1rem;
  font-family: var(--font-display);
  font-size: clamp(1.3rem, 1.1rem + 0.7vw, 1.5rem);
  line-height: 1.4;
}

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

.article-body h3,
.prose h3 {
  margin-block: 2rem 0.75rem;
  font-family: var(--font-display);
  font-size: clamp(1.125rem, 1rem + 0.45vw, 1.25rem);
  line-height: 1.45;
}

.article-body p,
.prose p {
  margin-block: 0 1.25rem;
}

.article-body ul,
.article-body ol,
.prose ul,
.prose ol {
  margin-block: 0 1.5rem;
  padding-left: 1.5rem;
}

.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-link);
  text-decoration-thickness: 1px;
  text-underline-offset: 0.18em;
}

.article-body a:not([class*="btn"]):not([class*="button"]):hover,
.prose a:not([class*="btn"]):not([class*="button"]):hover {
  color: var(--color-accent-dark);
}

.article-body blockquote,
.prose blockquote {
  margin: 1.75rem 0;
  padding: 1rem 1.25rem;
  border-left: 3px solid var(--color-accent);
  border-radius: 0 var(--radius-small) var(--radius-small) 0;
  background: var(--color-panel);
  color: var(--color-muted);
}

.article-body pre,
.prose pre {
  max-width: 100%;
  margin-block: 1.5rem;
  padding: 1.25rem;
  overflow-x: auto;
  border-radius: var(--radius-medium);
  background: var(--color-deep);
  color: var(--color-ink-96);
  font-family: var(--font-mono);
  font-size: 0.875rem;
  line-height: 1.7;
}

.article-body :not(pre) > code,
.prose :not(pre) > code {
  padding: 0.12em 0.38em;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-small);
  background: var(--color-panel);
  color: var(--color-accent-dark);
  font-family: var(--font-mono);
  font-size: 0.9em;
}

.article-download-card {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 2rem;
  margin-block: 3rem;
  padding: clamp(1.5rem, 4vw, 2.5rem);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-large);
  background: var(--color-panel);
}

.article-download-card h2 {
  margin: 0 0 0.65rem;
  font-family: var(--font-display);
  font-size: clamp(1.35rem, 2vw, 1.75rem);
  line-height: 1.35;
}

.article-download-card p {
  max-width: 38rem;
  margin: 0;
  color: var(--color-muted);
  line-height: 1.7;
}

.article-download-card__actions {
  display: flex;
  flex: 0 0 auto;
  flex-wrap: wrap;
  gap: 0.75rem;
}

#related-posts {
  max-width: var(--reading-width);
  margin: 3rem auto 0;
}

#related-posts > h2 {
  margin-block: 0 1.25rem;
  font-family: var(--font-display);
  font-size: clamp(1.3rem, 2vw, 1.5rem);
  line-height: 1.4;
}

.related-post-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(min(100%, 18.75rem), 1fr));
  gap: 1rem;
}

.related-post-card {
  min-width: 0;
  padding: 1.25rem;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-medium);
  background: var(--color-page);
}

.related-post-card h3 {
  margin-block: 1rem 0.65rem;
  font-family: var(--font-display);
  font-size: 1.05rem;
  line-height: 1.5;
}

.related-post-card p {
  display: -webkit-box;
  margin: 0;
  overflow: hidden;
  color: var(--color-muted);
  font-size: 0.925rem;
  line-height: 1.7;
  -webkit-box-orient: vertical;
  -webkit-line-clamp: 3;
}

#post-nav {
  display: grid;
  max-width: var(--reading-width);
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1rem;
  margin: 2rem auto 0;
}

.post-nav__link {
  display: flex;
  min-width: 0;
  min-height: 7rem;
  flex-direction: column;
  gap: 0.55rem;
  justify-content: center;
  padding: 1.25rem;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-medium);
  background: var(--color-page);
  color: var(--color-text);
  text-decoration: none;
}

.post-nav__link:hover {
  border-color: var(--color-accent);
}

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

.post-nav__label {
  color: var(--color-muted);
  font-family: var(--font-mono);
  font-size: 0.8125rem;
}

.post-nav__link strong {
  overflow: hidden;
  font-family: var(--font-display);
  font-size: 1rem;
  line-height: 1.5;
  text-overflow: ellipsis;
}

@media (max-width: 800px) {
  .blog-index-toolbar {
    align-items: flex-start;
    flex-direction: column;
  }

  .blog-filter {
    justify-content: flex-start;
  }

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

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

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

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

@media (max-width: 640px) {
  .blog-index-hero {
    padding-block: 3.5rem;
  }

  .blog-index-hero h1 {
    max-width: 100%;
    font-size: 1.875rem;
  }

  .blog-index-content {
    padding-block: 3.5rem;
  }

  .blog-filter {
    width: 100%;
  }

  .blog-filter__button {
    flex: 1 1 auto;
  }

  .article-hero {
    padding-bottom: 1.5rem;
  }

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

  .article-download-card__actions .btn {
    width: 100%;
  }

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

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

@media (prefers-reduced-motion: reduce) {
  .blog-filter__button {
    transition: none;
  }
}