:root {
  --blog-overlay: rgb(16 12 9 / 88%);
  --blog-transition-fast: 180ms;
  --blog-transition-ease: ease-out;
}

.blog-hero {
  overflow-x: clip;
  border-bottom: var(--line-thin) solid var(--color-border);
  background: var(--color-panel);
}

.blog-hero .wrap {
  min-height: 24rem;
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  padding-top: clamp(5rem, 10vw, 9rem);
  padding-bottom: clamp(3rem, 7vw, 6rem);
}

.blog-hero h1 {
  max-width: 11ch;
  margin: 0;
  color: var(--color-text);
  font-family: var(--font-display);
  font-size: clamp(3.25rem, 8vw, 7rem);
  font-weight: 700;
  line-height: 1.02;
  letter-spacing: -0.04em;
}

.blog-hero-lead {
  max-width: 44rem;
  margin: 1.5rem 0 0;
  color: var(--color-muted);
  font-size: clamp(1rem, 2vw, 1.2rem);
  line-height: 1.85;
}

.blog-index-section {
  border-bottom: var(--line-thin) solid var(--color-border);
}

.blog-filter {
  display: flex;
  flex-wrap: wrap;
  gap: 0;
  margin: 2rem 0 2.5rem;
  border-top: var(--line-thin) solid var(--color-border);
  border-left: var(--line-thin) solid var(--color-border);
}

.blog-filter-button {
  min-height: 3rem;
  padding: 0.7rem 1.1rem;
  border: 0;
  border-right: var(--line-thin) solid var(--color-border);
  border-bottom: var(--line-thin) solid var(--color-border);
  border-radius: var(--radius-none);
  background: var(--color-panel);
  color: var(--color-muted);
  font: inherit;
  cursor: pointer;
}

.blog-filter-button:hover,
.blog-filter-button:focus-visible {
  color: var(--color-text);
  background: var(--color-panel-strong);
}

.blog-filter-button.is-active {
  background: var(--color-accent);
  color: var(--color-text);
}

.post-list {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  border-top: var(--line-thin) solid var(--color-border);
  border-left: var(--line-thin) solid var(--color-border);
}

.post-card {
  min-width: 0;
  display: flex;
  flex-direction: column;
  min-height: 21rem;
  padding: clamp(1.4rem, 3vw, 2.25rem);
  border-right: var(--line-thin) solid var(--color-border);
  border-bottom: var(--line-thin) solid var(--color-border);
  background: var(--color-panel);
}

.post-card-meta,
.related-card-meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.75rem;
  color: var(--color-muted);
  font-family: var(--font-mono);
  font-size: 0.78rem;
}

.post-card-meta .badge,
.related-card-meta .badge {
  max-width: 12rem;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.post-card h3 {
  margin: 2rem 0 1rem;
  color: var(--color-text);
  font-family: var(--font-display);
  font-size: clamp(1.45rem, 3vw, 2rem);
  line-height: 1.35;
}

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

.post-card-link {
  width: fit-content;
  margin-top: auto;
  color: var(--color-text);
  font-weight: 700;
  text-decoration-color: var(--color-accent);
  text-decoration-thickness: var(--line-strong);
  text-underline-offset: 0.35rem;
}

.post-card-link:hover,
.post-card-link:focus-visible {
  color: var(--color-accent);
}

.blog-empty-state {
  margin: 0;
  padding: 3rem;
  border: var(--line-thin) solid var(--color-border);
  color: var(--color-muted);
  text-align: center;
}

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

.breadcrumb ol {
  display: flex;
  flex-wrap: wrap;
  gap: 0.55rem;
  margin: 0;
  padding: 0;
  color: var(--color-muted);
  font-size: 0.9rem;
  list-style: none;
}

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

.breadcrumb li:not(:last-child)::after {
  content: "/";
  margin-left: 0.55rem;
  color: var(--color-border);
}

.breadcrumb a {
  color: var(--color-muted);
}

.breadcrumb a:hover,
.breadcrumb a:focus-visible {
  color: var(--color-text);
}

.article-hero {
  border-bottom: var(--line-thin) solid var(--color-border);
}

.article-hero .reading-wrap {
  padding-top: clamp(3rem, 7vw, 6rem);
  padding-bottom: clamp(3rem, 7vw, 5rem);
}

.article-meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.8rem;
  margin-bottom: 1.5rem;
  color: var(--color-muted);
  font-family: var(--font-mono);
  font-size: 0.82rem;
}

.article-hero h1 {
  margin: 0;
  color: var(--color-text);
  font-family: var(--font-display);
  font-size: clamp(2.5rem, 6vw, 5rem);
  line-height: 1.12;
  letter-spacing: -0.035em;
}

.article-summary {
  margin: 1.75rem 0 0;
  color: var(--color-muted);
  font-size: clamp(1.05rem, 2vw, 1.25rem);
  line-height: 1.85;
}

.prose {
  color: var(--color-text);
}

.prose h2 {
  margin-top: 4rem;
  padding-top: 1rem;
  border-top: var(--line-thin) solid var(--color-border);
  font-family: var(--font-display);
  font-size: clamp(1.8rem, 4vw, 2.6rem);
  line-height: 1.3;
}

.prose h3 {
  margin-top: 2.5rem;
  font-family: var(--font-display);
  font-size: clamp(1.3rem, 3vw, 1.75rem);
  line-height: 1.4;
}

.prose p,
.prose li {
  line-height: 1.95;
}

.prose a {
  color: var(--color-text);
  text-decoration-color: var(--color-accent);
  text-underline-offset: 0.25rem;
}

.prose code {
  color: var(--color-text);
  font-family: var(--font-mono);
  overflow-wrap: anywhere;
}

.prose pre {
  max-width: 100%;
  overflow-x: auto;
  padding: 1.25rem;
  border: var(--line-thin) solid var(--color-border);
  border-radius: var(--radius-none);
  background: var(--color-panel);
  color: var(--color-text);
  font-family: var(--font-mono);
  line-height: 1.7;
}

.prose pre code {
  overflow-wrap: normal;
}

.prose blockquote {
  margin: 2rem 0;
  padding: 0.25rem 0 0.25rem 1.5rem;
  border-left: var(--line-strong) solid var(--color-accent);
  color: var(--color-muted);
}

.download-cta,
.dl-card {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 2rem;
  margin-top: 4rem;
  padding: clamp(1.5rem, 4vw, 2.5rem);
  border: var(--line-thin) solid var(--color-accent);
  background: var(--color-panel-strong);
}

.download-cta h2,
.dl-card h2 {
  margin: 0 0 0.75rem;
  padding: 0;
  border: 0;
  font-family: var(--font-display);
  font-size: clamp(1.6rem, 4vw, 2.25rem);
}

.download-cta p,
.dl-card p {
  margin: 0;
  color: var(--color-muted);
}

.download-cta-actions {
  display: flex;
  flex-wrap: wrap;
  flex-shrink: 0;
  gap: 0.75rem;
}

#related-posts {
  margin-top: 5rem;
  padding-top: 2rem;
  border-top: var(--line-thin) solid var(--color-border);
}

#related-posts > h2 {
  margin: 0;
  font-family: var(--font-display);
  font-size: clamp(1.8rem, 4vw, 2.5rem);
}

.related-intro {
  margin: 0.75rem 0 2rem;
  color: var(--color-muted);
}

.related-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  border-top: var(--line-thin) solid var(--color-border);
  border-left: var(--line-thin) solid var(--color-border);
}

.related-card {
  min-width: 0;
  padding: 1.5rem;
  border-right: var(--line-thin) solid var(--color-border);
  border-bottom: var(--line-thin) solid var(--color-border);
  background: var(--color-panel);
}

.related-card h3 {
  margin: 1.25rem 0 0.8rem;
  font-family: var(--font-display);
  font-size: 1.25rem;
  line-height: 1.45;
}

.related-card h3 a {
  color: var(--color-text);
}

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

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

#post-nav {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  margin-top: 2.5rem;
  border-top: var(--line-thin) solid var(--color-border);
  border-left: var(--line-thin) solid var(--color-border);
}

.post-nav-link {
  min-width: 0;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  padding: 1.5rem;
  border-right: var(--line-thin) solid var(--color-border);
  border-bottom: var(--line-thin) solid var(--color-border);
  background: var(--color-panel);
  color: var(--color-text);
  text-decoration: none;
}

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

.post-nav-link:hover,
.post-nav-link:focus-visible {
  background: var(--color-panel-strong);
}

.post-nav-direction,
.post-nav-link time {
  color: var(--color-muted);
  font-family: var(--font-mono);
  font-size: 0.78rem;
}

.post-nav-link strong {
  line-height: 1.5;
}

.download-modal {
  position: fixed;
  inset: 0;
  z-index: 1000;
  display: grid;
  place-items: center;
  padding: var(--gutter);
  background: var(--blog-overlay);
  opacity: 0;
  transition: opacity var(--blog-transition-fast) var(--blog-transition-ease);
}

.download-modal.is-open {
  opacity: 1;
}

.download-modal.is-closing {
  opacity: 0;
}

.download-modal-panel {
  position: relative;
  width: min(100%, 34rem);
  padding: clamp(1.75rem, 5vw, 3rem);
  border: var(--line-thin) solid var(--color-border);
  border-top: var(--line-strong) solid var(--color-accent);
  border-radius: var(--radius-none);
  background: var(--color-panel-strong);
  color: var(--color-text);
  transform: translateY(1rem);
  transition: transform var(--blog-transition-fast) var(--blog-transition-ease);
}

.download-modal.is-open .download-modal-panel {
  transform: translateY(0);
}

.download-modal-mark {
  margin: 0 0 1rem;
  color: var(--color-accent);
  font-family: var(--font-mono);
  font-size: 0.78rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.download-modal-panel h2 {
  margin: 0;
  font-family: var(--font-display);
  font-size: clamp(2rem, 6vw, 3rem);
  line-height: 1.2;
}

.download-modal-panel > p:not(.download-modal-mark) {
  margin: 1rem 0 0;
  color: var(--color-muted);
  line-height: 1.8;
}

.download-modal-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-top: 2rem;
}

.download-modal-close {
  position: absolute;
  top: 0;
  right: 0;
  width: 3rem;
  height: 3rem;
  border: 0;
  border-left: var(--line-thin) solid var(--color-border);
  border-bottom: var(--line-thin) solid var(--color-border);
  border-radius: var(--radius-none);
  background: var(--color-panel);
  color: var(--color-muted);
  font: inherit;
  font-size: 1.5rem;
  cursor: pointer;
}

.download-modal-close:hover,
.download-modal-close:focus-visible {
  background: var(--color-accent);
  color: var(--color-text);
}

@media (max-width: 800px) {
  .post-list,
  .related-grid {
    grid-template-columns: minmax(0, 1fr);
  }

  .download-cta,
  .dl-card {
    align-items: flex-start;
    flex-direction: column;
  }

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

@media (max-width: 640px) {
  .blog-hero .wrap {
    min-height: 21rem;
  }

  .blog-filter {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .blog-filter-button {
    min-width: 0;
  }

  #post-nav {
    grid-template-columns: minmax(0, 1fr);
  }

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

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

  .download-modal-actions .btn {
    width: 100%;
  }
}

@media (prefers-reduced-motion: reduce) {
  .download-modal,
  .download-modal-panel {
    transition: none;
  }
}