:root {
  --blog-hero-max: 48rem;
  --blog-card-min: 18rem;
  --blog-rule-width: 2.5rem;
  --blog-content-gap: 1.5rem;
  --blog-copy-size: 1rem;
  --blog-copy-leading: 1.85;
  --blog-title-leading: 1.18;
  --blog-small-leading: 1.55;
  --blog-transition-duration: 180ms;
  --blog-border-thin: 1px;
}

.blog-hero {
  padding-block: clamp(4.5rem, 10vw, 7.5rem) clamp(3rem, 7vw, 5rem);
  text-align: center;
}

.blog-hero .reading-wrap {
  max-width: var(--blog-hero-max);
  margin-inline: auto;
}

.blog-kicker,
.section-eyebrow {
  display: inline-block;
  color: var(--color-accent-dark);
  font-family: var(--font-mono);
  font-size: 0.78rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.blog-hero h1 {
  max-width: var(--blog-hero-max);
  margin: 1rem auto 1.25rem;
  color: var(--color-text);
  font-family: var(--font-display);
  font-size: clamp(2.25rem, 6vw, 3rem);
  font-weight: 600;
  line-height: var(--blog-title-leading);
  letter-spacing: -0.02em;
  text-wrap: pretty;
}

.blog-hero p {
  max-width: 42rem;
  margin-inline: auto;
  color: var(--color-text-muted);
  font-size: 1.05rem;
  line-height: 1.8;
}

.blog-index-section {
  padding-block: 1rem clamp(5rem, 9vw, 8rem);
}

.blog-list-heading {
  display: flex;
  align-items: end;
  justify-content: space-between;
  gap: 2rem;
  margin-bottom: 2rem;
  padding-bottom: 1.5rem;
  border-bottom: var(--blog-border-thin) solid var(--color-border);
}

.blog-list-heading h2 {
  margin: 0.45rem 0 0;
  color: var(--color-text);
  font-family: var(--font-display);
  font-size: clamp(1.5rem, 3vw, 2rem);
  font-weight: 600;
  letter-spacing: -0.015em;
  text-wrap: pretty;
}

.blog-filter {
  display: flex;
  flex-wrap: wrap;
  justify-content: flex-end;
  gap: 0.5rem;
}

.blog-filter-button {
  min-height: 2.5rem;
  padding: 0.55rem 0.9rem;
  border: var(--blog-border-thin) solid var(--color-border);
  border-radius: var(--radius-pill);
  background: var(--color-panel);
  color: var(--color-text-muted);
  font-family: var(--font-body);
  font-size: 0.9rem;
  cursor: pointer;
  transition:
    border-color var(--blog-transition-duration) ease,
    background-color var(--blog-transition-duration) ease,
    color var(--blog-transition-duration) ease;
}

.blog-filter-button:hover {
  border-color: var(--color-accent-line);
  color: var(--color-accent-dark);
}

.blog-filter-button:focus-visible {
  outline: 0.15rem solid var(--color-accent-line);
  outline-offset: 0.15rem;
}

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

.blog-list {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(min(100%, var(--blog-card-min)), 1fr));
  gap: var(--blog-content-gap);
}

.article-card {
  display: flex;
  min-height: 19rem;
  flex-direction: column;
  padding: clamp(1.4rem, 3vw, 2rem);
  border: var(--blog-border-thin) solid var(--color-border);
  border-radius: var(--radius-md);
  background: var(--color-panel);
  box-shadow: var(--shadow-panel);
  transition:
    border-color var(--blog-transition-duration) ease,
    transform var(--blog-transition-duration) ease;
}

.article-card:hover {
  border-color: var(--color-accent-line);
  transform: translateY(-0.15rem);
}

.article-meta,
.related-card-meta,
.article-hero-meta {
  display: flex;
  align-items: center;
  justify-content: flex-start;
  flex-wrap: wrap;
  gap: 0.65rem;
  color: var(--color-text-muted);
  font-family: var(--font-mono);
  font-size: 0.78rem;
  line-height: var(--blog-small-leading);
}

.article-card h3 {
  margin: 1.35rem 0 0.8rem;
  color: var(--color-text);
  font-family: var(--font-display);
  font-size: 1.25rem;
  font-weight: 600;
  line-height: 1.45;
  letter-spacing: -0.015em;
  text-wrap: pretty;
}

.article-card p {
  margin: 0 0 1.5rem;
  color: var(--color-text-muted);
  font-size: 0.96rem;
  line-height: 1.75;
}

.article-card-link,
.related-card-link {
  width: fit-content;
  margin-top: auto;
  color: var(--color-accent-dark);
  font-weight: 600;
  text-decoration: none;
}

.article-card-link:hover,
.related-card-link:hover {
  color: var(--color-accent);
  text-decoration: underline;
  text-underline-offset: 0.22rem;
}

.blog-empty {
  margin: 2rem 0 0;
  padding: 2rem;
  border: var(--blog-border-thin) solid var(--color-border);
  border-radius: var(--radius-md);
  background: var(--color-panel-secondary);
  color: var(--color-text-muted);
  text-align: center;
}

.breadcrumb-wrap {
  max-width: var(--reading-max);
  margin: 1.5rem auto 0;
  padding-inline: var(--gutter);
}

.breadcrumb {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 0.5rem;
  color: var(--color-text-muted);
  font-size: 0.86rem;
  line-height: var(--blog-small-leading);
}

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

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

.breadcrumb-separator {
  color: var(--color-border);
}

.article-hero {
  max-width: var(--reading-max);
  margin-inline: auto;
  padding: clamp(2.5rem, 6vw, 4.5rem) var(--gutter) clamp(2rem, 5vw, 3.5rem);
}

.article-hero h1 {
  margin: 1rem 0 1.15rem;
  color: var(--color-text);
  font-family: var(--font-display);
  font-size: clamp(2rem, 5vw, 2.6rem);
  font-weight: 600;
  line-height: var(--blog-title-leading);
  letter-spacing: -0.02em;
  text-wrap: pretty;
}

.article-hero-summary {
  margin: 0;
  color: var(--color-text-muted);
  font-size: 1.06rem;
  line-height: 1.8;
}

.article-body {
  max-width: var(--reading-max);
  margin-inline: auto;
  padding-inline: var(--gutter);
  color: var(--color-text);
  font-size: var(--blog-copy-size);
  line-height: var(--blog-copy-leading);
}

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

.article-body h2 {
  margin: 2.8rem 0 1rem;
  color: var(--color-text);
  font-family: var(--font-display);
  font-size: clamp(1.35rem, 3vw, 1.6rem);
  font-weight: 600;
  line-height: 1.4;
  letter-spacing: -0.015em;
  text-wrap: pretty;
}

.article-body h3 {
  margin: 2rem 0 0.75rem;
  color: var(--color-text);
  font-family: var(--font-display);
  font-size: clamp(1.15rem, 2.5vw, 1.3rem);
  font-weight: 600;
  line-height: 1.45;
  letter-spacing: -0.01em;
  text-wrap: pretty;
}

.article-body p,
.article-body ul,
.article-body ol,
.article-body blockquote,
.article-body pre,
.article-body .table-scroll,
.article-body .stat-grid,
.article-body .check-list,
.article-body .verdict {
  margin-block: 1.15rem;
}

.article-body a {
  color: var(--color-accent-dark);
  text-underline-offset: 0.2rem;
}

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

.article-body li + li {
  margin-top: 0.45rem;
}

.article-body blockquote {
  padding: 1rem 1.25rem;
  border-left: 0.2rem solid var(--color-accent);
  background: var(--color-panel-secondary);
  color: var(--color-text-muted);
}

.article-body pre {
  overflow-x: auto;
  padding: 1.1rem 1.25rem;
  border: var(--blog-border-thin) solid var(--color-device-line);
  border-radius: var(--radius-sm);
  background: var(--color-device);
  color: var(--color-device-text);
  font-family: var(--font-mono);
  font-size: 0.88rem;
  line-height: 1.7;
}

.article-body code {
  font-family: var(--font-mono);
}

.article-body :not(pre) > code {
  padding: 0.12rem 0.35rem;
  border-radius: var(--radius-xs);
  background: var(--color-panel-secondary);
  color: var(--color-accent-dark);
}

.stat-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(9rem, 1fr));
  gap: 0.75rem;
}

.stat-card {
  padding: 1.15rem;
  border: var(--blog-border-thin) solid var(--color-border);
  border-radius: var(--radius-sm);
  background: var(--color-panel);
}

.stat-num {
  display: block;
  color: var(--color-accent-dark);
  font-family: var(--font-mono);
  font-size: 1.35rem;
  font-weight: 600;
  line-height: 1.35;
}

.stat-label {
  display: block;
  margin-top: 0.35rem;
  color: var(--color-text-muted);
  font-size: 0.88rem;
  line-height: 1.55;
}

.check-list {
  padding: 1.1rem 1.25rem 1.1rem 2.75rem;
  border: var(--blog-border-thin) solid var(--color-border);
  border-radius: var(--radius-sm);
  background: var(--color-panel-secondary);
}

.check-list li + li {
  margin-top: 0.65rem;
}

.verdict {
  padding: 1rem 1.25rem;
  border-left: 0.22rem solid var(--color-accent);
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  background: var(--color-accent-soft);
  color: var(--color-text);
}

.verdict strong:first-child {
  color: var(--color-accent-dark);
}

.promo-block {
  display: flex;
  max-width: var(--reading-max);
  margin: clamp(3rem, 7vw, 5rem) auto 0;
  padding: clamp(1.5rem, 4vw, 2.25rem);
  align-items: center;
  justify-content: space-between;
  gap: 2rem;
  border-radius: var(--radius-md);
  background: var(--color-device);
  color: var(--color-device-text);
  box-shadow: var(--shadow-device);
}

.promo-brand {
  margin-bottom: 0.55rem;
  color: var(--color-accent);
  font-family: var(--font-mono);
  font-size: 0.82rem;
  font-weight: 600;
  letter-spacing: 0.08em;
}

.promo-block h2 {
  margin: 0;
  color: var(--color-device-text);
  font-family: var(--font-display);
  font-size: clamp(1.35rem, 3vw, 1.6rem);
  line-height: 1.4;
  letter-spacing: -0.015em;
  text-wrap: pretty;
}

.promo-block p {
  max-width: 34rem;
  margin: 0.65rem 0 0;
  color: var(--color-device-muted);
  line-height: 1.7;
}

#related-posts {
  max-width: var(--wrap-max);
  margin-inline: auto;
  padding: 2rem var(--gutter) 1.5rem;
}

#related-posts > h2 {
  margin: 0 0 1.25rem;
  color: var(--color-text);
  font-family: var(--font-display);
  font-size: 1.5rem;
  font-weight: 600;
  letter-spacing: -0.015em;
  text-wrap: pretty;
}

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

.related-card {
  display: flex;
  flex-direction: column;
  padding: 1.35rem;
  border: var(--blog-border-thin) solid var(--color-border);
  border-radius: var(--radius-sm);
  background: var(--color-panel);
}

.related-card h3 {
  margin: 1rem 0 0.65rem;
  color: var(--color-text);
  font-family: var(--font-display);
  font-size: 1.08rem;
  font-weight: 600;
  line-height: 1.5;
  letter-spacing: -0.01em;
  text-wrap: pretty;
}

.related-card p {
  margin: 0 0 1.25rem;
  color: var(--color-text-muted);
  font-size: 0.9rem;
  line-height: 1.7;
}

#post-nav {
  display: grid;
  max-width: var(--reading-max);
  margin-inline: auto;
  padding: 1.5rem var(--gutter) 2rem;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1rem;
}

.post-nav-link {
  display: flex;
  min-height: 7rem;
  flex-direction: column;
  justify-content: center;
  padding: 1.2rem;
  border: var(--blog-border-thin) solid var(--color-border);
  border-radius: var(--radius-sm);
  background: var(--color-panel);
  color: var(--color-text);
  text-decoration: none;
  transition:
    border-color var(--blog-transition-duration) ease,
    background-color var(--blog-transition-duration) ease;
}

.post-nav-link:hover {
  border-color: var(--color-accent-line);
  background: var(--color-panel-secondary);
}

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

.post-nav-label {
  margin-bottom: 0.45rem;
  color: var(--color-text-muted);
  font-family: var(--font-mono);
  font-size: 0.76rem;
}

.post-nav-link strong {
  font-size: 0.96rem;
  line-height: 1.55;
  letter-spacing: -0.01em;
  text-wrap: pretty;
}

@media (max-width: 48rem) {
  .blog-list-heading {
    align-items: flex-start;
    flex-direction: column;
  }

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

  .promo-block {
    align-items: flex-start;
    flex-direction: column;
    margin-inline: var(--gutter);
  }

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

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

@media (max-width: 32rem) {
  .blog-hero {
    padding-block: 3.5rem 2.75rem;
  }

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

  .blog-filter {
    width: 100%;
  }

  .blog-filter-button {
    flex: 1 1 auto;
  }
}

@media (prefers-reduced-motion: reduce) {
  .article-card,
  .blog-filter-button,
  .post-nav-link {
    transition: none;
  }

  .article-card:hover {
    transform: none;
  }
}