.blog-hero {
  border-bottom: var(--border-heavy) solid var(--color-border);
  background-color: var(--color-bg);
}

.blog-hero-layout {
  display: grid;
  grid-template-columns: minmax(0, 2fr) minmax(20rem, 3fr);
  gap: clamp(2rem, 6vw, 6rem);
  align-items: stretch;
}

.blog-hero-copy {
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding-block: clamp(2rem, 7vw, 6rem);
}

.blog-hero-copy h1 {
  max-width: 9ch;
  margin: 0.45rem 0 1.5rem;
  font-family: var(--font-display);
  font-size: clamp(3rem, 7vw, 6.8rem);
  font-weight: 900;
  line-height: 0.96;
  letter-spacing: -0.06em;
}

.blog-hero-copy p {
  max-width: 34rem;
  margin: 0;
  color: var(--color-muted);
  font-size: clamp(1rem, 1.5vw, 1.18rem);
  line-height: 1.8;
}

.blog-route-board {
  display: grid;
  grid-template-rows: auto 1fr auto;
  min-height: 30rem;
  padding: clamp(1.25rem, 3vw, 2.5rem);
  border: var(--border-heavy) solid var(--color-border);
  background-color: var(--color-panel-alt);
  background-image:
    linear-gradient(var(--color-grid) var(--border-medium), var(--color-transparent) var(--border-medium)),
    linear-gradient(90deg, var(--color-grid) var(--border-medium), var(--color-transparent) var(--border-medium));
  background-size: 4rem 4rem;
}

.route-board-label {
  justify-self: start;
  padding: 0.5rem 0.7rem;
  border: var(--border-medium) solid var(--color-border);
  background-color: var(--color-panel);
  font-family: var(--font-mono);
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.04em;
}

.route-board-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(7rem, 1fr));
  gap: clamp(1rem, 3vw, 2.5rem);
  align-content: center;
  padding-block: 2rem;
}

.route-board-grid span {
  display: grid;
  min-height: 5.5rem;
  place-items: center;
  border: var(--border-heavy) solid var(--color-border);
  background-color: var(--color-panel);
  font-family: var(--font-mono);
  font-weight: 800;
}

.route-board-grid span:nth-child(1),
.route-board-grid span:nth-child(4) {
  color: var(--color-light-ink);
  background-color: var(--color-accent);
}

.route-board-grid span:nth-child(2) {
  color: var(--color-light-ink);
  background-color: var(--color-success);
}

.route-board-exits {
  display: flex;
  justify-content: flex-end;
  gap: 0.75rem;
}

.route-board-exits span {
  min-width: 5rem;
  padding: 0.55rem 0.8rem;
  border: var(--border-medium) solid var(--color-border);
  background-color: var(--color-panel);
  font-family: var(--font-mono);
  font-size: 0.85rem;
  font-weight: 800;
  text-align: center;
}

.route-board-exits span:last-child {
  color: var(--color-light-ink);
  background-color: var(--color-success);
}

.blog-index-section {
  background-color: var(--color-bg);
}

.blog-index-heading {
  display: flex;
  align-items: end;
  justify-content: space-between;
  gap: 1rem;
  margin-bottom: 1.5rem;
}

.blog-index-heading h2 {
  margin: 0.35rem 0 0;
  font-family: var(--font-display);
  font-size: clamp(2rem, 5vw, 4rem);
  line-height: 1;
}

.post-count {
  margin: 0;
  font-family: var(--font-mono);
  color: var(--color-muted);
  font-size: 0.85rem;
}

.blog-filter {
  display: flex;
  gap: 0.7rem;
  margin-bottom: 2rem;
  padding-bottom: 0.5rem;
  overflow-x: auto;
  scrollbar-width: thin;
}

.blog-filter button {
  flex: 0 0 auto;
  padding: 0.65rem 0.9rem;
  border: var(--border-medium) solid var(--color-border);
  border-radius: var(--radius-small);
  color: var(--color-text);
  background-color: var(--color-panel);
  font-family: var(--font-body);
  font-size: 0.9rem;
  font-weight: 750;
  cursor: pointer;
}

.blog-filter button:hover {
  color: var(--color-light-ink);
  background-color: var(--color-success);
}

.blog-filter button[aria-pressed="true"] {
  color: var(--color-light-ink);
  background-color: var(--color-accent);
}

.blog-filter button:focus-visible,
.post-card a:focus-visible,
.related-post-card a:focus-visible,
.post-nav-card:focus-visible {
  outline: var(--border-heavy) solid var(--color-accent);
  outline-offset: 0.2rem;
}

.post-list {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: clamp(1rem, 2.5vw, 2rem);
}

.post-card {
  display: flex;
  min-width: 0;
  min-height: 21rem;
  flex-direction: column;
  padding: clamp(1.25rem, 3vw, 2rem);
  border: var(--border-heavy) solid var(--color-border);
  border-radius: var(--radius-small);
  background-color: var(--color-panel);
}

.post-card:nth-child(3n + 2) {
  background-color: var(--color-panel-alt);
}

.post-card:nth-child(3n) {
  border-top-color: var(--color-success);
}

.post-card-meta,
.related-post-meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.75rem;
  margin-bottom: 1.2rem;
}

.post-card time,
.related-post-meta time {
  color: var(--color-muted);
  font-family: var(--font-mono);
  font-size: 0.78rem;
}

.post-card h3 {
  margin: 0 0 1rem;
  font-family: var(--font-display);
  font-size: clamp(1.35rem, 2.2vw, 2rem);
  line-height: 1.35;
}

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

.post-card h3 a:hover {
  color: var(--color-accent-dark);
  text-decoration: underline;
  text-decoration-thickness: var(--border-medium);
  text-underline-offset: 0.2em;
}

.post-card p {
  margin: 0 0 1.5rem;
  color: var(--color-muted);
  line-height: 1.75;
}

.post-link {
  align-self: flex-start;
  margin-top: auto;
  color: var(--color-accent-dark);
  font-family: var(--font-mono);
  font-weight: 800;
  text-decoration: none;
}

.post-link:hover {
  color: var(--color-success);
}

.post-list-empty,
.blog-noscript {
  grid-column: 1 / -1;
  padding: 2rem;
  border: var(--border-heavy) solid var(--color-border);
  background-color: var(--color-panel);
}

.blog-noscript {
  margin-top: 1.5rem;
}

.blog-noscript h2 {
  margin-top: 0;
}

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

.article-breadcrumb ol {
  display: flex;
  flex-wrap: wrap;
  gap: 0.55rem;
  margin: 0;
  padding: 0;
  list-style: none;
  color: var(--color-muted);
  font-family: var(--font-mono);
  font-size: 0.8rem;
}

.article-breadcrumb li {
  display: flex;
  align-items: center;
  gap: 0.55rem;
}

.article-breadcrumb li:not(:last-child)::after {
  content: "/";
  color: var(--color-accent);
  font-weight: 800;
}

.article-breadcrumb a {
  color: var(--color-accent-dark);
}

.article-header {
  padding-block: clamp(2rem, 6vw, 5rem);
  border-bottom: var(--border-heavy) solid var(--color-border);
}

.article-header-meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.8rem;
  margin-bottom: 1.3rem;
  color: var(--color-muted);
  font-family: var(--font-mono);
  font-size: 0.82rem;
}

.article-header h1 {
  max-width: 17ch;
  margin: 0 0 1.5rem;
  font-family: var(--font-display);
  font-size: clamp(2.6rem, 6.5vw, 5.8rem);
  font-weight: 900;
  line-height: 1.08;
  letter-spacing: -0.045em;
}

.article-lead {
  max-width: 48rem;
  margin: 0;
  color: var(--color-muted);
  font-size: clamp(1.05rem, 2vw, 1.3rem);
  line-height: 1.8;
}

.article-body {
  width: min(100% - (var(--gutter) * 2), var(--content-width));
  margin-inline: auto;
  padding-block: clamp(2.5rem, 7vw, 6rem);
  font-size: 1.04rem;
  line-height: 1.9;
}

.article-body h2 {
  margin: 3.5rem 0 1.2rem;
  padding-top: 1rem;
  border-top: var(--border-heavy) solid var(--color-border);
  font-family: var(--font-display);
  font-size: clamp(1.8rem, 4vw, 2.8rem);
  line-height: 1.25;
}

.article-body h3 {
  margin: 2.4rem 0 0.9rem;
  font-family: var(--font-display);
  font-size: clamp(1.3rem, 2.5vw, 1.75rem);
  line-height: 1.4;
}

.article-body p {
  margin: 0 0 1.35rem;
}

.article-body ul,
.article-body ol {
  margin: 0 0 1.6rem;
  padding-left: 1.5rem;
}

.article-body li {
  margin-bottom: 0.65rem;
  padding-left: 0.3rem;
}

.article-body a {
  color: var(--color-accent-dark);
  text-decoration-thickness: var(--border-medium);
  text-underline-offset: 0.16em;
}

.article-body code,
.term-code {
  padding: 0.1rem 0.3rem;
  border: var(--border-medium) solid var(--color-border);
  border-radius: var(--radius-small);
  background-color: var(--color-panel-alt);
  font-family: var(--font-mono);
  font-size: 0.9em;
}

.article-body pre {
  margin: 1.8rem 0;
  padding: 1.25rem;
  overflow-x: auto;
  border: var(--border-heavy) solid var(--color-border);
  border-radius: var(--radius-small);
  color: var(--color-light-ink);
  background-color: var(--color-border);
  line-height: 1.65;
}

.article-body pre code {
  padding: 0;
  border: 0;
  color: inherit;
  background-color: var(--color-transparent);
}

.article-body blockquote {
  margin: 1.8rem 0;
  padding: 1.1rem 1.4rem;
  border: var(--border-medium) solid var(--color-border);
  border-left: 0.65rem solid var(--color-accent);
  background-color: var(--color-accent-wash);
}

.article-body blockquote p:last-child {
  margin-bottom: 0;
}

.article-download-card {
  margin-top: 4rem;
  padding: clamp(1.5rem, 4vw, 3rem);
  border: var(--border-heavy) solid var(--color-border);
  border-left: 0.8rem solid var(--color-accent);
  background-color: var(--color-panel-alt);
}

.article-download-card h2 {
  margin: 0 0 1rem;
  padding: 0;
  border: 0;
}

.article-download-card p {
  max-width: 43rem;
  color: var(--color-muted);
}

#related-posts {
  width: min(100% - (var(--gutter) * 2), var(--page-width));
  margin: 0 auto;
  padding-block: clamp(2.5rem, 6vw, 5rem);
  border-top: var(--border-heavy) solid var(--color-border);
}

#related-posts > h2 {
  margin: 0 0 1.5rem;
  font-family: var(--font-display);
  font-size: clamp(1.8rem, 4vw, 3rem);
}

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

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

.related-post-card:nth-child(2) {
  background-color: var(--color-panel-alt);
}

.related-post-card h3 {
  margin: 0 0 0.8rem;
  font-family: var(--font-display);
  font-size: 1.15rem;
  line-height: 1.45;
}

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

.related-post-card h3 a:hover {
  color: var(--color-accent-dark);
  text-decoration: underline;
  text-underline-offset: 0.16em;
}

.related-post-card p {
  margin: 0;
  color: var(--color-muted);
  font-size: 0.92rem;
  line-height: 1.65;
}

.post-nav-grid {
  display: grid;
  width: min(100% - (var(--gutter) * 2), var(--page-width));
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1rem;
  margin: 0 auto;
  padding-bottom: clamp(3rem, 7vw, 6rem);
}

.post-nav-card {
  display: flex;
  min-height: 8rem;
  flex-direction: column;
  justify-content: center;
  gap: 0.65rem;
  padding: 1.3rem;
  border: var(--border-heavy) solid var(--color-border);
  color: var(--color-text);
  background-color: var(--color-panel);
  text-decoration: none;
}

.post-nav-card:hover {
  color: var(--color-light-ink);
  background-color: var(--color-success);
}

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

.post-nav-label {
  color: var(--color-accent-dark);
  font-family: var(--font-mono);
  font-size: 0.78rem;
  font-weight: 800;
}

.post-nav-card:hover .post-nav-label {
  color: var(--color-warn);
}

.post-nav-card strong {
  font-family: var(--font-display);
  line-height: 1.45;
}

@media (max-width: 56rem) {
  .blog-hero-layout {
    grid-template-columns: 1fr;
  }

  .blog-hero-copy {
    padding-bottom: 0;
  }

  .blog-route-board {
    min-height: 24rem;
  }

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

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

@media (max-width: 38rem) {
  .blog-index-heading {
    align-items: flex-start;
    flex-direction: column;
  }

  .blog-route-board {
    min-height: 21rem;
    padding: 1rem;
  }

  .route-board-grid {
    gap: 0.7rem;
  }

  .route-board-grid span {
    min-height: 4.5rem;
    font-size: 0.78rem;
  }

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

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

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