:root {
  --blog-reading-size: 48rem;
  --blog-list-title-size: clamp(2.25rem, 6vw, 3rem);
  --blog-article-title-size: clamp(2rem, 5vw, 2.6rem);
  --blog-section-title-size: clamp(1.35rem, 3vw, 1.6rem);
  --blog-subtitle-size: clamp(1.12rem, 2vw, 1.3rem);
  --blog-body-size: 1rem;
  --blog-body-leading: 1.85;
  --blog-title-leading: 1.18;
  --blog-title-tracking: -0.02em;
  --blog-meta-size: 0.86rem;
  --blog-small-size: 0.9rem;
  --blog-card-min: 17rem;
  --blog-fab-bottom: 1.25rem;
  --blog-fab-side: 1.25rem;
  --blog-fab-size: 1.1rem;
  --blog-accent-rule: 0.24rem;
  --blog-breadcrumb-space: 1.35rem;
  --blog-transition: 180ms ease;
  --blog-panel-gradient: linear-gradient(
    135deg,
    var(--color-panel-soft),
    var(--color-panel-tint)
  );
}

.blog-list-hero {
  padding-block: clamp(4.5rem, 10vw, 7.5rem) clamp(3.5rem, 8vw, 6rem);
  background: var(--color-bg);
}

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

.blog-list-hero h1 {
  max-width: var(--blog-reading-size);
  margin-block: 1.1rem 1rem;
  color: var(--color-text);
  font-family: var(--font-display);
  font-size: var(--blog-list-title-size);
  line-height: var(--blog-title-leading);
  letter-spacing: var(--blog-title-tracking);
  text-wrap: pretty;
}

.blog-list-hero p {
  max-width: 42rem;
  margin: 0;
  color: var(--color-text-muted);
  font-size: 1.08rem;
  line-height: 1.8;
}

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

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

.blog-index-heading h2 {
  margin-block: 0.4rem 0;
  color: var(--color-text);
  font-family: var(--font-display);
  font-size: var(--blog-section-title-size);
  line-height: var(--blog-title-leading);
  letter-spacing: var(--blog-title-tracking);
  text-wrap: pretty;
}

.blog-filter {
  display: flex;
  flex-wrap: wrap;
  gap: 0.65rem;
}

.blog-filter-button {
  min-height: 2.5rem;
  padding: 0.6rem 1rem;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-pill);
  background: var(--color-panel);
  color: var(--color-text-muted);
  font: inherit;
  font-weight: 650;
  cursor: pointer;
  transition:
    color var(--blog-transition),
    border-color var(--blog-transition),
    background-color var(--blog-transition),
    transform var(--blog-transition);
}

.blog-filter-button:hover {
  border-color: var(--color-border-strong);
  color: var(--color-accent-dark);
  transform: translateY(-0.1rem);
}

.blog-filter-button:focus-visible {
  outline: 2px solid var(--color-accent);
  outline-offset: 0.2rem;
}

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

.blog-card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(min(100%, var(--blog-card-min)), 1fr));
  gap: 1.2rem;
}

.article-card {
  display: flex;
  min-width: 0;
  min-height: 100%;
  flex-direction: column;
  padding: clamp(1.35rem, 3vw, 1.8rem);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  background: var(--color-panel);
  box-shadow: var(--shadow-card);
  transition:
    transform var(--blog-transition),
    box-shadow var(--blog-transition),
    border-color var(--blog-transition);
}

.article-card:hover {
  border-color: var(--color-border-strong);
  box-shadow: var(--shadow-float);
  transform: translateY(-0.2rem);
}

.article-card-meta,
.related-card-meta,
.article-meta {
  display: flex;
  align-items: center;
  justify-content: flex-start;
  flex-wrap: wrap;
  gap: 0.55rem 0.8rem;
  color: var(--color-text-soft);
  font-family: var(--font-mono);
  font-size: var(--blog-meta-size);
}

.article-card h3 {
  margin-block: 1rem 0.7rem;
  color: var(--color-text);
  font-family: var(--font-display);
  font-size: var(--blog-subtitle-size);
  line-height: 1.4;
  letter-spacing: var(--blog-title-tracking);
  text-wrap: pretty;
}

.article-card p {
  margin: 0 0 1.35rem;
  color: var(--color-text-muted);
  line-height: 1.75;
}

.article-card-link {
  display: inline-flex;
  align-items: center;
  width: fit-content;
  margin-top: auto;
  color: var(--color-accent-dark);
  font-weight: 700;
  text-decoration: none;
}

.article-card-link:hover {
  color: var(--color-accent);
}

.blog-empty {
  margin: 2rem 0 0;
  padding: 1.2rem;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  background: var(--color-panel);
  color: var(--color-text-muted);
  text-align: center;
}

.blog-list-cta {
  background: var(--color-bg);
}

.blog-breadcrumb,
.breadcrumb {
  width: min(calc(100% - (var(--gutter) * 2)), var(--blog-reading-size));
  margin-top: var(--blog-breadcrumb-space);
  margin-inline: auto;
  padding-top: var(--blog-breadcrumb-space);
  color: var(--color-text-soft);
  font-size: var(--blog-small-size);
}

.blog-breadcrumb ol,
.breadcrumb ol {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 0.45rem;
  margin: 0;
  padding: 0;
  list-style: none;
}

.blog-breadcrumb li:not(:last-child)::after,
.breadcrumb li:not(:last-child)::after {
  margin-left: 0.45rem;
  color: var(--color-border-strong);
  content: "/";
}

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

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

.blog-article,
article[data-blog-post] {
  width: min(calc(100% - (var(--gutter) * 2)), var(--blog-reading-size));
  margin-inline: auto;
}

.article-hero {
  width: min(calc(100% - (var(--gutter) * 2)), var(--blog-reading-size));
  margin-inline: auto;
  padding-block: clamp(2.4rem, 6vw, 4.5rem) clamp(2rem, 5vw, 3.5rem);
}

.article-hero h1,
.blog-article h1,
article[data-blog-post] h1 {
  margin-block: 1rem 1.1rem;
  color: var(--color-text);
  font-family: var(--font-display);
  font-size: var(--blog-article-title-size);
  line-height: var(--blog-title-leading);
  letter-spacing: var(--blog-title-tracking);
  text-wrap: pretty;
}

.article-hero > p,
.article-summary {
  margin: 0;
  color: var(--color-text-muted);
  font-size: 1.08rem;
  line-height: 1.8;
}

.article-body {
  width: 100%;
  max-width: var(--blog-reading-size);
  margin-inline: auto;
  color: var(--color-text);
  font-size: var(--blog-body-size);
  line-height: var(--blog-body-leading);
}

.article-body h2 {
  margin-block: 2.8rem 1rem;
  color: var(--color-text);
  font-family: var(--font-display);
  font-size: var(--blog-section-title-size);
  line-height: 1.35;
  letter-spacing: var(--blog-title-tracking);
  text-wrap: pretty;
}

.article-body h3 {
  margin-block: 2rem 0.8rem;
  color: var(--color-text);
  font-family: var(--font-display);
  font-size: var(--blog-subtitle-size);
  line-height: 1.4;
  letter-spacing: var(--blog-title-tracking);
  text-wrap: pretty;
}

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

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

.article-body a {
  color: var(--color-accent-dark);
  text-decoration-thickness: 0.08rem;
  text-underline-offset: 0.18rem;
}

.article-body ul,
.article-body ol {
  margin-block: 0 1.4rem;
  padding-left: 1.5rem;
}

.article-body li {
  margin-block: 0.35rem;
}

.article-body blockquote {
  margin: 1.6rem 0;
  padding: 1.1rem 1.25rem;
  border-left: var(--blog-accent-rule) solid var(--color-accent);
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  background: var(--color-panel-soft);
  color: var(--color-text-muted);
}

.article-body pre {
  max-width: 100%;
  overflow-x: auto;
  margin: 1.6rem 0;
  padding: 1.2rem;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  background: var(--color-panel-soft);
  color: var(--color-text);
  font-family: var(--font-mono);
  font-size: var(--blog-small-size);
  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-soft);
  color: var(--color-accent-dark);
}

.stat-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(min(100%, 9.5rem), 1fr));
  gap: 0.8rem;
  margin-block: 1.6rem;
}

.stat-card {
  padding: 1.15rem;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  background: var(--color-panel);
  box-shadow: var(--shadow-card);
}

.stat-num {
  display: block;
  margin-bottom: 0.35rem;
  color: var(--color-accent-dark);
  font-family: var(--font-mono);
  font-size: 1.35rem;
  font-weight: 750;
  line-height: 1.25;
}

.stat-label {
  display: block;
  color: var(--color-text-muted);
  font-size: var(--blog-small-size);
  line-height: 1.55;
}

.check-list {
  margin-block: 1.5rem;
  padding: 1.2rem 1.25rem 1.2rem 2.7rem;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  background: var(--color-panel-soft);
}

.check-list li {
  padding-left: 0.2rem;
}

.verdict {
  margin-block: 1.6rem;
  padding: 1.1rem 1.25rem;
  border-left: var(--blog-accent-rule) solid var(--color-accent);
  border-radius: 0 var(--radius-md) var(--radius-md) 0;
  background: var(--color-panel-tint);
  color: var(--color-text-muted);
}

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

.promo-block {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.5rem;
  margin-block: clamp(3rem, 7vw, 5rem);
  padding: clamp(1.5rem, 4vw, 2.2rem);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  background: var(--blog-panel-gradient);
  box-shadow: var(--shadow-card);
}

.promo-brand {
  margin-bottom: 0.45rem;
  color: var(--color-accent-dark);
  font-family: var(--font-mono);
  font-size: var(--blog-small-size);
  font-weight: 750;
  letter-spacing: 0.04em;
}

.promo-block h2 {
  margin: 0 0 0.55rem;
  color: var(--color-text);
  font-family: var(--font-display);
  font-size: var(--blog-section-title-size);
  line-height: 1.35;
  letter-spacing: var(--blog-title-tracking);
  text-wrap: pretty;
}

.promo-block p {
  margin: 0;
  color: var(--color-text-muted);
  line-height: 1.7;
}

#related-posts {
  width: min(calc(100% - (var(--gutter) * 2)), var(--blog-reading-size));
  margin: 0 auto 2.5rem;
}

#related-posts > h2 {
  margin: 0 0 1.1rem;
  color: var(--color-text);
  font-family: var(--font-display);
  font-size: var(--blog-section-title-size);
  line-height: 1.35;
  letter-spacing: var(--blog-title-tracking);
  text-wrap: pretty;
}

.related-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(min(100%, 13rem), 1fr));
  gap: 0.9rem;
}

.related-card {
  min-width: 0;
  padding: 1.15rem;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  background: var(--color-panel);
  box-shadow: var(--shadow-card);
}

.related-card h3 {
  margin-block: 0.8rem 0.55rem;
  font-family: var(--font-display);
  font-size: 1.05rem;
  line-height: 1.45;
  letter-spacing: var(--blog-title-tracking);
  text-wrap: pretty;
}

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

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

.related-card p {
  margin: 0;
  color: var(--color-text-muted);
  font-size: var(--blog-small-size);
  line-height: 1.65;
}

#post-nav {
  display: grid;
  width: min(calc(100% - (var(--gutter) * 2)), var(--blog-reading-size));
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0.9rem;
  margin: 0 auto clamp(4rem, 8vw, 6rem);
}

.post-nav-card {
  display: flex;
  min-width: 0;
  flex-direction: column;
  gap: 0.45rem;
  padding: 1.15rem;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  background: var(--color-panel);
  color: var(--color-text);
  text-decoration: none;
  transition:
    border-color var(--blog-transition),
    transform var(--blog-transition),
    box-shadow var(--blog-transition);
}

.post-nav-card:hover {
  border-color: var(--color-border-strong);
  box-shadow: var(--shadow-card);
  transform: translateY(-0.12rem);
}

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

.post-nav-label {
  color: var(--color-accent-dark);
  font-size: var(--blog-small-size);
  font-weight: 700;
}

.post-nav-card strong {
  line-height: 1.5;
  letter-spacing: var(--blog-title-tracking);
  text-wrap: pretty;
}

.float-cta {
  position: fixed;
  right: var(--blog-fab-side);
  bottom: var(--blog-fab-bottom);
  z-index: 20;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.55rem;
  max-width: calc(100vw - (var(--blog-fab-side) * 2));
  min-height: 3rem;
  padding: 0.72rem 1.05rem;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-pill);
  background: var(--color-accent-dark);
  color: var(--color-panel);
  box-shadow: var(--shadow-float);
  font-weight: 750;
  text-decoration: none;
  transition:
    transform var(--blog-transition),
    background-color var(--blog-transition);
}

.float-cta:hover {
  background: var(--color-accent);
  transform: translateY(-0.15rem);
}

.float-cta:focus-visible {
  outline: 2px solid var(--color-accent);
  outline-offset: 0.2rem;
}

.float-cta svg,
.float-cta-icon {
  width: var(--blog-fab-size);
  height: var(--blog-fab-size);
  flex: 0 0 auto;
  fill: none;
  stroke: currentColor;
}

@media (max-width: 48rem) {
  .blog-index-heading {
    align-items: stretch;
    flex-direction: column;
    gap: 1.2rem;
  }

  .blog-filter {
    overflow-x: auto;
    flex-wrap: nowrap;
    padding-bottom: 0.25rem;
  }

  .blog-filter-button {
    flex: 0 0 auto;
  }

  .promo-block {
    align-items: flex-start;
    flex-direction: column;
  }

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

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

  .float-cta {
    right: var(--blog-fab-side);
    bottom: var(--blog-fab-bottom);
    min-height: 2.75rem;
    padding: 0.65rem 0.9rem;
    font-size: var(--blog-small-size);
  }
}

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