:root {
  --blog-reading-width: var(--reading-width);
  --blog-card-gap: clamp(1rem, 2vw, 1.5rem);
  --blog-copy-size: 1rem;
  --blog-copy-leading: 1.85;
  --blog-hero-title-size: clamp(2.25rem, 6vw, 3rem);
  --blog-article-title-size: clamp(2rem, 5vw, 2.6rem);
  --blog-h2-size: clamp(1.35rem, 3vw, 1.6rem);
  --blog-h3-size: clamp(1.15rem, 2.5vw, 1.3rem);
}

.blog-hero {
  border-bottom: 1px solid var(--color-line);
  background: var(--color-canvas);
}

.blog-hero-inner {
  max-width: var(--reading-width);
  margin-inline: auto;
  text-align: center;
}

.blog-hero h1 {
  max-width: var(--reading-width);
  margin: 1rem auto 0;
  color: var(--color-ink);
  font-family: var(--font-display);
  font-size: var(--blog-hero-title-size);
  font-weight: 800;
  letter-spacing: -0.02em;
  line-height: 1.12;
  text-wrap: pretty;
}

.blog-hero p {
  max-width: 40rem;
  margin: 1.25rem auto 0;
  color: var(--color-muted);
  font-size: 1.05rem;
  line-height: 1.8;
}

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

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

.blog-list-heading h2 {
  margin: 0.65rem 0 0;
  color: var(--color-ink);
  font-family: var(--font-display);
  font-size: clamp(1.7rem, 4vw, 2.25rem);
  line-height: 1.2;
  text-wrap: pretty;
}

.blog-count {
  flex: none;
  margin: 0;
  color: var(--color-muted);
  font-family: var(--font-mono);
  font-size: 0.82rem;
}

.blog-filter {
  display: flex;
  flex-wrap: wrap;
  gap: 0.65rem;
  margin-bottom: clamp(2rem, 5vw, 3rem);
}

.blog-filter-button {
  min-height: 2.5rem;
  padding: 0.55rem 0.9rem;
  border: 1px solid var(--color-line);
  border-radius: var(--radius-small);
  background: var(--color-canvas);
  color: var(--color-muted);
  font: 600 0.9rem/1.2 var(--font-body);
  cursor: pointer;
  transition:
    border-color 160ms ease,
    background-color 160ms ease,
    color 160ms ease,
    transform 160ms ease;
}

.blog-filter-button:hover {
  border-color: var(--color-accent);
  color: var(--color-accent);
  transform: translateY(-1px);
}

.blog-filter-button:focus-visible {
  outline: 2px solid var(--color-accent);
  outline-offset: 2px;
}

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

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

.article-card,
.related-card {
  display: flex;
  min-width: 0;
  flex-direction: column;
  padding: clamp(1.25rem, 3vw, 1.75rem);
  border: 1px solid var(--color-line);
  border-radius: var(--radius-medium);
  background: var(--color-canvas);
  box-shadow: var(--shadow-panel);
}

.article-card h3,
.related-card h3 {
  margin: 1rem 0 0;
  color: var(--color-ink);
  font-family: var(--font-display);
  font-size: clamp(1.15rem, 2.4vw, 1.35rem);
  font-weight: 750;
  letter-spacing: -0.015em;
  line-height: 1.45;
  text-wrap: pretty;
}

.article-card p,
.related-card p {
  margin: 0.85rem 0 1.25rem;
  color: var(--color-muted);
  font-size: 0.96rem;
  line-height: 1.8;
}

.article-meta {
  display: flex;
  align-items: center;
  justify-content: flex-start;
  gap: 0.75rem;
  flex-wrap: wrap;
  color: var(--color-muted);
  font-family: var(--font-mono);
  font-size: 0.78rem;
}

.article-meta .tag {
  display: inline-flex;
  align-items: center;
  min-height: 1.65rem;
  padding: 0.25rem 0.55rem;
  border-radius: var(--radius-small);
  background: var(--color-panel-strong);
  color: var(--color-accent);
  font-family: var(--font-body);
  font-weight: 700;
}

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

.article-card-link:hover {
  color: var(--color-accent-deep);
  text-decoration: underline;
  text-underline-offset: 0.2em;
}

.blog-empty {
  grid-column: 1 / -1;
  margin: 0;
  padding: 2rem;
  border: 1px solid var(--color-line);
  border-radius: var(--radius-medium);
  background: var(--color-panel);
  color: var(--color-muted);
  text-align: center;
}

.blog-index-promo {
  margin-top: 0;
}

.breadcrumb-wrap,
.article-breadcrumb {
  width: min(100%, var(--blog-reading-width));
  margin-top: 1.5rem;
  margin-inline: auto;
  padding-inline: var(--gutter);
}

.breadcrumb {
  display: flex;
  align-items: center;
  gap: 0.55rem;
  flex-wrap: wrap;
  color: var(--color-muted);
  font-size: 0.86rem;
  line-height: 1.6;
}

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

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

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

.article-hero {
  width: min(100%, var(--blog-reading-width));
  margin-inline: auto;
  padding: clamp(2.25rem, 6vw, 4rem) var(--gutter) clamp(2rem, 4vw, 3rem);
}

.article-hero .article-meta {
  justify-content: flex-start;
}

.article-hero h1 {
  max-width: var(--blog-reading-width);
  margin: 1rem 0 0;
  color: var(--color-ink);
  font-family: var(--font-display);
  font-size: var(--blog-article-title-size);
  font-weight: 800;
  letter-spacing: -0.02em;
  line-height: 1.18;
  text-wrap: pretty;
}

.article-lead {
  margin: 1.25rem 0 0;
  color: var(--color-muted);
  font-size: 1.08rem;
  line-height: 1.85;
}

.reading-wrap,
.article-body,
.prose {
  width: min(100%, var(--blog-reading-width));
  max-width: 48rem;
  margin-inline: auto;
}

.article-body,
.prose {
  padding-inline: var(--gutter);
  color: var(--color-ink);
  font-size: var(--blog-copy-size);
  line-height: var(--blog-copy-leading);
}

.prose h1,
.article-body h1 {
  text-wrap: pretty;
}

.prose h2,
.article-body h2 {
  margin: 2.75rem 0 1rem;
  color: var(--color-ink);
  font-family: var(--font-display);
  font-size: var(--blog-h2-size);
  font-weight: 780;
  letter-spacing: -0.015em;
  line-height: 1.35;
  text-wrap: pretty;
}

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

.prose h3,
.article-body h3 {
  margin: 2rem 0 0.75rem;
  color: var(--color-ink);
  font-family: var(--font-display);
  font-size: var(--blog-h3-size);
  font-weight: 750;
  letter-spacing: -0.01em;
  line-height: 1.4;
  text-wrap: pretty;
}

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

.prose ul,
.prose ol,
.article-body ul,
.article-body ol {
  margin: 0 0 1.5rem;
  padding-left: 1.45rem;
}

.prose li + li,
.article-body li + li {
  margin-top: 0.55rem;
}

.prose a,
.article-body a {
  color: var(--color-accent);
  text-underline-offset: 0.2em;
}

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

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

.prose pre,
.article-body pre {
  max-width: 100%;
  overflow-x: auto;
  margin: 1.75rem 0;
  padding: 1.1rem;
  border: 1px solid var(--color-line);
  border-radius: var(--radius-small);
  background: var(--color-panel-strong);
  color: var(--color-ink);
  font-family: var(--font-mono);
  font-size: 0.88rem;
  line-height: 1.7;
}

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

.prose :not(pre) > code,
.article-body :not(pre) > code {
  padding: 0.12em 0.35em;
  border-radius: var(--radius-small);
  background: var(--color-panel-strong);
  color: var(--color-accent-deep);
  font-size: 0.9em;
}

.prose img,
.article-body img {
  max-width: 100%;
  height: auto;
  border-radius: var(--radius-small);
}

.prose > .data-table,
.article-body > .data-table,
.prose .table-scroll,
.article-body .table-scroll {
  max-width: 100%;
  overflow-x: auto;
}

.stat-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(9rem, 1fr));
  gap: 0.75rem;
  margin: 1.75rem 0;
}

.stat-card {
  padding: 1.1rem;
  border: 1px solid var(--color-line);
  border-radius: var(--radius-small);
  background: var(--color-panel);
}

.stat-num {
  display: block;
  color: var(--color-accent);
  font-family: var(--font-mono);
  font-size: clamp(1.25rem, 3vw, 1.65rem);
  font-weight: 750;
  line-height: 1.2;
}

.stat-label {
  display: block;
  margin-top: 0.45rem;
  color: var(--color-muted);
  font-size: 0.86rem;
  line-height: 1.55;
}

.check-list {
  margin: 1.5rem 0;
  padding: 1.1rem 1.1rem 1.1rem 2.6rem;
  border: 1px solid var(--color-line);
  border-radius: var(--radius-small);
  background: var(--color-panel);
}

.check-list li::marker {
  color: var(--color-accent);
}

.verdict {
  margin: 1.75rem 0;
  padding: 1rem 1.2rem;
  border-left: 3px solid var(--color-accent);
  border-radius: 0 var(--radius-small) var(--radius-small) 0;
  background: var(--color-panel);
  color: var(--color-ink);
}

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

.promo-block.article-promo {
  width: min(calc(100% - (var(--gutter) * 2)), var(--blog-reading-width));
  margin: clamp(2.5rem, 6vw, 4rem) auto 0;
  padding: clamp(1.4rem, 4vw, 2rem);
  border: 1px solid var(--color-accent);
  border-radius: var(--radius-medium);
  background: var(--color-panel);
  box-shadow: var(--shadow-panel);
}

.promo-block.article-promo h2 {
  margin: 0;
  color: var(--color-ink);
  font-size: var(--blog-h2-size);
  text-wrap: pretty;
}

.promo-block.article-promo p {
  margin: 0.65rem 0 0;
  color: var(--color-muted);
  line-height: 1.75;
}

#related-posts {
  width: min(calc(100% - (var(--gutter) * 2)), var(--content-width));
  margin-inline: auto;
  padding-top: 2rem;
}

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

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

#post-nav {
  width: min(calc(100% - (var(--gutter) * 2)), var(--content-width));
  margin-inline: auto;
  padding-top: 1rem;
  padding-bottom: 2rem;
}

.post-nav-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: var(--blog-card-gap);
}

.post-nav-card {
  display: flex;
  min-width: 0;
  flex-direction: column;
  gap: 0.55rem;
  padding: 1.2rem;
  border: 1px solid var(--color-line);
  border-radius: var(--radius-small);
  background: var(--color-canvas);
  color: var(--color-ink);
  text-decoration: none;
  box-shadow: var(--shadow-panel);
  transition:
    border-color 160ms ease,
    transform 160ms ease;
}

.post-nav-card:hover {
  border-color: var(--color-accent);
  transform: translateY(-1px);
}

.post-nav-card:nth-child(2) {
  text-align: right;
}

.post-nav-label {
  color: var(--color-accent);
  font-family: var(--font-mono);
  font-size: 0.76rem;
  font-weight: 700;
}

.post-nav-card strong {
  font-size: 0.95rem;
  line-height: 1.55;
  text-wrap: pretty;
}

.float-cta {
  position: fixed;
  right: max(1rem, var(--gutter));
  bottom: max(1rem, var(--gutter));
  z-index: 30;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.55rem;
  max-width: min(18rem, calc(100vw - 2rem));
  min-height: 3rem;
  padding: 0.7rem 1rem;
  border: 1px solid var(--color-accent);
  border-radius: var(--radius-pill);
  background: var(--color-accent);
  color: var(--color-canvas);
  font-weight: 750;
  text-decoration: none;
  box-shadow: var(--shadow-button);
}

.float-cta:hover {
  border-color: var(--color-accent-deep);
  background: var(--color-accent-deep);
}

.float-cta svg {
  width: 1.15rem;
  height: 1.15rem;
  flex: none;
  stroke: currentColor;
}

@media (max-width: 52rem) {
  .blog-card-grid,
  .related-grid {
    grid-template-columns: 1fr;
  }

  .blog-list-heading {
    align-items: flex-start;
  }

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

  .post-nav-spacer {
    display: none;
  }

  .post-nav-card:nth-child(2) {
    text-align: left;
  }
}

@media (max-width: 36rem) {
  .blog-list-heading {
    flex-direction: column;
    gap: 0.65rem;
  }

  .blog-filter {
    flex-wrap: nowrap;
    margin-inline: calc(var(--gutter) * -1);
    padding-inline: var(--gutter);
    overflow-x: auto;
    overscroll-behavior-inline: contain;
    scrollbar-width: thin;
  }

  .blog-filter-button {
    flex: none;
  }

  .article-hero {
    padding-top: 2rem;
  }

  .float-cta {
    right: 0.75rem;
    bottom: 0.75rem;
    max-width: calc(100vw - 1.5rem);
    min-height: 2.75rem;
  }
}

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