:root {
  --blog-reading-width: 56rem;
  --blog-card-padding: clamp(1.4rem, 3vw, 2rem);
  --blog-hero-padding-block: clamp(2rem, 5vw, 3.75rem);
  --blog-grid-size: 1.5rem;
  --blog-transition: 180ms ease;
  --blog-rule-width: 0.24rem;
}

.blog-page {
  background: var(--color-canvas);
  color: var(--color-ink);
  font-family: var(--font-body);
}

.blog-reading-column,
.article-column,
.article-breadcrumb,
.article-hero,
.article-body,
.end-promo,
.related-section,
.post-nav {
  width: min(calc(100% - (var(--gutter) * 2)), var(--blog-reading-width));
  margin-inline: auto;
}

.blog-list-hero {
  position: relative;
  overflow: hidden;
  padding-block: clamp(4rem, 9vw, 7rem) clamp(3rem, 7vw, 5rem);
  border-bottom: 1px solid var(--color-line);
  background:
    radial-gradient(
      circle at 78% 42%,
      color-mix(in srgb, var(--color-glow) 78%, transparent),
      transparent 42%
    ),
    var(--color-canvas);
}

.blog-list-hero::after {
  position: absolute;
  inset: auto max(var(--gutter), calc((100% - var(--blog-reading-width)) / 2)) 1.5rem auto;
  width: clamp(7rem, 16vw, 12rem);
  height: clamp(4rem, 9vw, 7rem);
  border: 1px solid var(--color-line);
  border-radius: var(--radius-sm);
  background:
    repeating-linear-gradient(
      to bottom,
      transparent 0,
      transparent calc(var(--blog-grid-size) - 1px),
      var(--color-line) calc(var(--blog-grid-size) - 1px),
      var(--color-line) var(--blog-grid-size)
    ),
    var(--color-canvas);
  box-shadow: var(--shadow-panel);
  content: "";
  opacity: 0.72;
  pointer-events: none;
}

.blog-list-hero .badge {
  margin-bottom: 1.25rem;
}

.blog-list-hero .eyebrow {
  margin-block: 0 0.75rem;
}

.blog-list-hero h1 {
  max-width: 15ch;
  margin: 0;
  font-family: var(--font-display);
  font-size: clamp(2.15rem, 6vw, 3rem);
  font-weight: 850;
  letter-spacing: -0.02em;
  line-height: 1.08;
  text-wrap: pretty;
}

.blog-list-intro {
  max-width: 42rem;
  margin: 1.35rem 0 0;
  color: var(--color-muted);
  font-size: 1.05rem;
  line-height: 1.85;
}

.blog-catalog {
  padding-block: var(--section-space);
}

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

.blog-catalog-heading .eyebrow {
  margin-block: 0 0.45rem;
}

.blog-catalog-heading h2 {
  margin: 0;
  font-family: var(--font-display);
  font-size: clamp(1.55rem, 3vw, 2rem);
  letter-spacing: -0.015em;
  text-wrap: pretty;
}

.blog-count {
  margin: 0;
  color: var(--color-muted);
  font-family: var(--font-mono);
  font-size: 0.78rem;
  white-space: nowrap;
}

.blog-filter {
  display: flex;
  flex-wrap: wrap;
  gap: 0.65rem;
  padding-bottom: 1.75rem;
  border-bottom: 1px solid var(--color-line);
}

.blog-filter-button {
  appearance: none;
  min-height: 2.45rem;
  padding: 0.55rem 0.9rem;
  border: 1px solid var(--color-line);
  border-radius: var(--radius-pill);
  background: var(--color-canvas);
  color: var(--color-muted);
  font: 650 0.88rem/1 var(--font-body);
  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-accent);
  color: var(--color-accent-dark);
  transform: translateY(-1px);
}

.blog-filter-button:focus-visible {
  outline: 2px solid var(--color-accent);
  outline-offset: 3px;
}

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

.blog-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1rem;
  margin-top: 1.75rem;
}

.article-card {
  position: relative;
  display: flex;
  min-width: 0;
  min-height: 21rem;
  flex-direction: column;
  padding: var(--blog-card-padding);
  overflow: hidden;
  border: 1px solid var(--color-line);
  border-radius: var(--radius-md);
  background: var(--color-canvas);
  box-shadow: var(--shadow-panel);
  transition:
    border-color var(--blog-transition),
    box-shadow var(--blog-transition),
    transform var(--blog-transition);
}

.article-card::before {
  position: absolute;
  top: 0;
  right: 0;
  left: 0;
  height: 0.2rem;
  background: var(--color-accent);
  content: "";
  opacity: 0;
  transform: scaleX(0.45);
  transform-origin: left;
  transition:
    opacity var(--blog-transition),
    transform var(--blog-transition);
}

.article-card:hover {
  border-color: color-mix(in srgb, var(--color-accent) 60%, var(--color-line));
  box-shadow: var(--shadow-device);
  transform: translateY(-3px);
}

.article-card:hover::before {
  opacity: 1;
  transform: scaleX(1);
}

.article-meta,
.related-card-meta,
.article-hero-meta {
  display: flex;
  align-items: center;
  justify-content: flex-start;
  flex-wrap: wrap;
  gap: 0.55rem;
}

.article-meta time,
.related-card-meta time {
  color: var(--color-muted);
  font-family: var(--font-mono);
  font-size: 0.76rem;
}

.article-card h3 {
  margin: 1.3rem 0 0;
  font-family: var(--font-display);
  font-size: clamp(1.2rem, 2.5vw, 1.45rem);
  line-height: 1.42;
  letter-spacing: -0.015em;
  text-wrap: pretty;
}

.article-card p {
  margin: 0.85rem 0 1.5rem;
  color: var(--color-muted);
  font-size: 0.96rem;
  line-height: 1.8;
}

.article-link,
.related-card-link {
  display: inline-flex;
  align-items: center;
  width: fit-content;
  margin-top: auto;
  color: var(--color-accent-dark);
  font-size: 0.9rem;
  font-weight: 750;
  text-decoration: none;
}

.article-link:hover,
.related-card-link:hover {
  color: var(--color-accent);
  text-decoration: underline;
  text-underline-offset: 0.25rem;
}

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

/* Article framework */

.article-breadcrumb {
  padding-top: clamp(1.4rem, 3vw, 2rem);
  padding-inline: clamp(1.5rem, 4vw, 3rem);
}

.article-breadcrumb ol {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 0.45rem;
  margin: 0;
  padding: 0;
  color: var(--color-muted);
  font-size: 0.85rem;
  list-style: none;
}

.article-breadcrumb li:not(:last-child)::after {
  margin-left: 0.45rem;
  color: var(--color-line);
  content: "→";
}

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

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

.article-hero {
  position: relative;
  margin-top: 1.25rem;
  padding-block: var(--blog-hero-padding-block);
  padding-inline: clamp(1.5rem, 4vw, 3rem);
  overflow: hidden;
  border: 1px solid var(--color-line);
  border-radius: var(--radius-md);
  background:
    repeating-linear-gradient(
      to right,
      transparent 0,
      transparent calc(var(--blog-grid-size) - 1px),
      color-mix(in srgb, var(--color-line) 48%, transparent) calc(var(--blog-grid-size) - 1px),
      color-mix(in srgb, var(--color-line) 48%, transparent) var(--blog-grid-size)
    ),
    repeating-linear-gradient(
      to bottom,
      transparent 0,
      transparent calc(var(--blog-grid-size) - 1px),
      color-mix(in srgb, var(--color-line) 48%, transparent) calc(var(--blog-grid-size) - 1px),
      color-mix(in srgb, var(--color-line) 48%, transparent) var(--blog-grid-size)
    ),
    var(--color-panel);
  box-shadow: var(--shadow-panel);
}

.article-hero::before {
  position: absolute;
  top: 1.15rem;
  bottom: 1.15rem;
  left: 0.65rem;
  width: var(--blog-rule-width);
  border-radius: var(--radius-pill);
  background: var(--color-accent);
  content: "";
}

.article-hero::after {
  position: absolute;
  top: 1rem;
  right: 1rem;
  padding: 0.35rem 0.55rem;
  border: 1px solid var(--color-accent);
  border-radius: var(--radius-xs);
  background: var(--color-accent-soft);
  color: var(--color-accent-dark);
  content: "KV · INDEX";
  font-family: var(--font-mono);
  font-size: 0.66rem;
  letter-spacing: 0.08em;
  transform: rotate(2deg);
}

.article-hero-meta {
  position: relative;
  z-index: 1;
  margin-bottom: 1.3rem;
}

.article-hero-meta time,
.article-hero-meta .read-time {
  display: inline-flex;
  align-items: center;
  min-height: 2rem;
  padding: 0.4rem 0.72rem;
  border: 1px solid var(--color-line);
  border-radius: var(--radius-pill);
  background: var(--color-canvas);
  color: var(--color-muted);
  font-family: var(--font-mono);
  font-size: 0.73rem;
}

.article-hero-meta .tag {
  min-height: 2rem;
  padding-inline: 0.72rem;
}

.article-hero h1 {
  position: relative;
  z-index: 1;
  max-width: 23ch;
  margin: 0;
  font-family: var(--font-display);
  font-size: clamp(2rem, 5vw, 2.6rem);
  font-weight: 850;
  line-height: 1.18;
  letter-spacing: -0.02em;
  text-wrap: pretty;
}

.article-hero-summary {
  position: relative;
  z-index: 1;
  max-width: 46rem;
  margin: 1.25rem 0 0;
  color: var(--color-muted);
  font-size: 1.02rem;
  line-height: 1.85;
}

.article-body {
  padding-block: clamp(2rem, 5vw, 3.5rem);
  padding-inline: clamp(1.5rem, 4vw, 3rem);
  color: var(--color-ink);
  font-size: 1rem;
  line-height: 1.85;
  counter-reset: article-section;
}

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

.article-body h2 {
  position: relative;
  margin: 3.25rem 0 1.1rem;
  padding-left: 3.1rem;
  font-family: var(--font-display);
  font-size: clamp(1.35rem, 3vw, 1.6rem);
  line-height: 1.35;
  letter-spacing: -0.015em;
  text-wrap: pretty;
  counter-increment: article-section;
}

.article-body h2::before {
  position: absolute;
  top: 0.02em;
  left: 0;
  display: inline-grid;
  width: 2.25rem;
  height: 2.25rem;
  place-items: center;
  border: 1px solid var(--color-accent);
  border-radius: var(--radius-sm);
  background: var(--color-accent-soft);
  color: var(--color-accent-dark);
  content: counter(article-section, decimal-leading-zero);
  font-family: var(--font-mono);
  font-size: 0.72rem;
  font-weight: 700;
}

.article-body h3 {
  margin: 2rem 0 0.8rem;
  font-family: var(--font-display);
  font-size: clamp(1.12rem, 2vw, 1.3rem);
  line-height: 1.45;
  letter-spacing: -0.01em;
  text-wrap: pretty;
}

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

.article-body a {
  color: var(--color-accent-dark);
  text-decoration-thickness: 1px;
  text-underline-offset: 0.22rem;
}

.article-body strong {
  color: var(--color-ink);
  font-weight: 750;
}

.article-body ul,
.article-body ol {
  margin: 0 0 1.4rem;
  padding-left: 1.45rem;
}

.article-body li {
  margin-block: 0.45rem;
  padding-left: 0.2rem;
}

.article-body blockquote {
  margin: 1.75rem 0;
  padding: 1.25rem 1.4rem;
  border-left: var(--blog-rule-width) solid var(--color-ink);
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  background: var(--color-panel);
  color: var(--color-muted);
}

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

.article-body .table-scroll {
  margin-block: 1.75rem;
  border: 1px solid var(--color-line);
  border-radius: var(--radius-sm);
  background: var(--color-canvas);
  box-shadow: var(--shadow-panel);
}

.article-body table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.92rem;
}

.article-body th,
.article-body td {
  padding: 0.85rem 1rem;
  border-bottom: 1px solid var(--color-line);
  text-align: left;
  vertical-align: top;
}

.article-body th {
  background: var(--color-ink);
  color: var(--color-canvas);
  font-weight: 700;
}

.article-body tbody tr:nth-child(even) {
  background: var(--color-panel);
}

.article-body tbody tr {
  transition: background-color var(--blog-transition);
}

.article-body tbody tr:hover {
  background: var(--color-accent-soft);
}

.article-body tbody tr:last-child td {
  border-bottom: 0;
}

.article-body pre {
  position: relative;
  margin-block: 1.75rem;
  padding: 2.8rem 1.25rem 1.25rem;
  overflow-x: auto;
  border: 1px solid var(--color-ink);
  border-radius: var(--radius-sm);
  background: var(--color-ink);
  color: var(--color-panel);
  box-shadow: var(--shadow-device);
}

.article-body pre::before {
  position: absolute;
  top: 0.85rem;
  left: 1rem;
  width: 0.62rem;
  height: 0.62rem;
  border-radius: var(--radius-pill);
  background: var(--color-error);
  box-shadow:
    1rem 0 0 var(--color-warning),
    2rem 0 0 var(--color-success);
  content: "";
}

.article-body pre::after {
  position: absolute;
  top: 0.65rem;
  right: 1rem;
  color: var(--color-panel-strong);
  content: "INDEX TERMINAL";
  font-family: var(--font-mono);
  font-size: 0.65rem;
  letter-spacing: 0.08em;
}

.article-body pre code {
  color: inherit;
  font-family: var(--font-mono);
  font-size: 0.86rem;
  line-height: 1.75;
}

.callout {
  position: relative;
  margin-block: 1.75rem;
  padding: 1.25rem 1.35rem 1.25rem 3.7rem;
  border: 1px solid var(--color-line);
  border-left: var(--blog-rule-width) solid var(--color-accent);
  border-radius: var(--radius-sm);
  background: var(--color-accent-soft);
  color: var(--color-ink);
}

.callout::before {
  position: absolute;
  top: 1.15rem;
  left: 1.1rem;
  display: grid;
  width: 1.75rem;
  height: 1.75rem;
  place-items: center;
  border-radius: var(--radius-pill);
  background: var(--color-accent);
  color: var(--color-canvas);
  content: "i";
  font-family: var(--font-mono);
  font-size: 0.8rem;
  font-weight: 800;
}

.callout-warning {
  border-left-color: var(--color-warning);
  background: color-mix(in srgb, var(--color-warning) 11%, var(--color-canvas));
}

.callout-warning::before {
  background: var(--color-warning);
  content: "!";
}

.callout-success {
  border-left-color: var(--color-success);
  background: color-mix(in srgb, var(--color-success) 10%, var(--color-canvas));
}

.callout-success::before {
  background: var(--color-success);
  content: "✓";
}

.stat-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(min(100%, 10.5rem), 1fr));
  gap: 0.8rem;
  margin-block: 1.75rem;
}

.stat-card {
  position: relative;
  min-width: 0;
  padding: 1.2rem;
  overflow: hidden;
  border: 1px solid var(--color-line);
  border-radius: var(--radius-sm);
  background: var(--color-panel);
}

.stat-card::before {
  position: absolute;
  inset: 0 0 auto;
  height: 0.22rem;
  background: var(--color-accent);
  content: "";
}

.stat-card:nth-child(even) {
  background: color-mix(in srgb, var(--color-glow) 52%, var(--color-canvas));
}

.stat-card:nth-child(even)::before {
  background: var(--color-ink);
}

.stat-card:nth-child(3n)::before {
  background: var(--color-success);
}

.stat-num {
  display: block;
  color: var(--color-ink);
  font-family: var(--font-display);
  font-size: clamp(1.35rem, 3vw, 1.8rem);
  font-weight: 820;
  line-height: 1.2;
}

.stat-label {
  display: block;
  margin-top: 0.45rem;
  color: var(--color-muted);
  font-size: 0.82rem;
  line-height: 1.55;
}

.check-list {
  margin-block: 1.75rem;
  padding: 0;
  border: 1px solid var(--color-line);
  border-radius: var(--radius-sm);
  background: var(--color-canvas);
  list-style: none;
}

.check-list li {
  margin: 0;
  padding: 0.9rem 1rem;
  border-bottom: 1px solid var(--color-line);
  background: var(--color-canvas);
  list-style: none;
}

.check-list li:nth-child(even) {
  background: var(--color-panel);
}

.check-list li:last-child {
  border-bottom: 0;
}

.verdict {
  margin-block: 1.75rem;
  padding: 1.2rem 1.35rem;
  border: 1px solid var(--color-line);
  border-left: var(--blog-rule-width) solid var(--color-accent);
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  background: linear-gradient(
    90deg,
    var(--color-accent-soft),
    var(--color-canvas)
  );
}

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

.end-promo {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 2rem;
  margin-bottom: 2rem;
  padding: clamp(1.75rem, 5vw, 3rem);
  overflow: hidden;
  border: 1px solid var(--color-ink);
  border-radius: var(--radius-md);
  background: linear-gradient(135deg, var(--color-accent-dark), var(--color-ink));
  color: var(--color-canvas);
  box-shadow: var(--shadow-device);
}

.end-promo::before,
.end-promo::after {
  position: absolute;
  border: 1px solid color-mix(in srgb, var(--color-canvas) 28%, transparent);
  border-radius: var(--radius-sm);
  content: "";
  pointer-events: none;
}

.end-promo::before {
  top: 1rem;
  right: 1rem;
  width: 7rem;
  height: 4.5rem;
}

.end-promo::after {
  right: 2.1rem;
  bottom: 1rem;
  width: 9rem;
  height: 5.5rem;
}

.end-promo-copy,
.end-promo-actions {
  position: relative;
  z-index: 1;
}

.end-promo h2 {
  margin: 0;
  color: var(--color-canvas);
  font-family: var(--font-display);
  font-size: clamp(1.45rem, 3vw, 2rem);
  letter-spacing: -0.015em;
  text-wrap: pretty;
}

.end-promo p {
  max-width: 36rem;
  margin: 0.75rem 0 0;
  color: color-mix(in srgb, var(--color-canvas) 84%, var(--color-panel-strong));
  line-height: 1.75;
}

.end-promo .btn-primary {
  border-color: var(--color-canvas);
  background: var(--color-canvas);
  color: var(--color-accent-dark);
  box-shadow: var(--shadow-button);
}

.end-promo .btn-primary:hover {
  border-color: var(--color-panel-strong);
  background: var(--color-panel-strong);
  color: var(--color-accent-dark);
}

.end-promo .btn-secondary {
  border-color: color-mix(in srgb, var(--color-canvas) 70%, transparent);
  background: transparent;
  color: var(--color-canvas);
}

.related-section {
  padding-top: 2rem;
}

.related-heading {
  margin-bottom: 1rem;
}

.related-heading .eyebrow {
  margin: 0 0 0.4rem;
}

.related-heading h2 {
  margin: 0;
  font-family: var(--font-display);
  font-size: clamp(1.35rem, 3vw, 1.6rem);
  letter-spacing: -0.015em;
  text-wrap: pretty;
}

.related-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 0.8rem;
}

.related-card {
  position: relative;
  display: flex;
  min-width: 0;
  min-height: 15.5rem;
  flex-direction: column;
  padding: 1.15rem;
  border: 1px solid var(--color-line);
  border-radius: var(--radius-sm);
  background: var(--color-canvas);
  transition:
    border-color var(--blog-transition),
    box-shadow var(--blog-transition),
    transform var(--blog-transition);
}

.related-card::before {
  position: absolute;
  inset: 0 0 auto;
  height: 0.18rem;
  background: var(--color-accent);
  content: "";
  opacity: 0;
  transition: opacity var(--blog-transition);
}

.related-card:hover {
  border-color: var(--color-accent);
  box-shadow: var(--shadow-panel);
  transform: translateY(-3px);
}

.related-card:hover::before {
  opacity: 1;
}

.related-card h3 {
  margin: 1rem 0 0;
  font-family: var(--font-display);
  font-size: 1.02rem;
  line-height: 1.48;
  letter-spacing: -0.01em;
  text-wrap: pretty;
}

.related-card p {
  display: -webkit-box;
  margin: 0.65rem 0 1rem;
  overflow: hidden;
  color: var(--color-muted);
  font-size: 0.84rem;
  line-height: 1.65;
  -webkit-box-orient: vertical;
  -webkit-line-clamp: 3;
}

.post-nav {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0.8rem;
  padding-block: 1.25rem 2rem;
}

.post-nav-card {
  position: relative;
  display: flex;
  min-width: 0;
  flex-direction: column;
  gap: 0.55rem;
  padding: 1.15rem;
  border: 1px solid var(--color-line);
  border-radius: var(--radius-sm);
  background: var(--color-panel);
  color: var(--color-ink);
  text-decoration: none;
  transition:
    border-color var(--blog-transition),
    background-color var(--blog-transition),
    transform var(--blog-transition);
}

.post-nav-card:hover {
  border-color: var(--color-accent);
  background: var(--color-accent-soft);
  transform: translateY(-2px);
}

.post-nav-direction {
  color: var(--color-accent-dark);
  font-family: var(--font-mono);
  font-size: 0.72rem;
}

.post-nav-card strong {
  font-size: 0.94rem;
  line-height: 1.55;
  text-wrap: pretty;
}

@media (max-width: 48rem) {
  .blog-grid,
  .related-grid {
    grid-template-columns: 1fr;
  }

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

  .blog-catalog-heading {
    align-items: flex-start;
    flex-direction: column;
    gap: 0.65rem;
  }

  .blog-filter {
    flex-wrap: nowrap;
    padding-bottom: 1rem;
    overflow-x: auto;
    scrollbar-width: thin;
  }

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

  .article-hero::after {
    display: none;
  }

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

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

@media (max-width: 32rem) {
  .blog-list-hero {
    padding-block: 3.25rem;
  }

  .blog-list-hero::after {
    opacity: 0.35;
  }

  .article-hero {
    padding-inline: 1.5rem;
  }

  .article-hero h1 {
    font-size: clamp(1.8rem, 9vw, 2.25rem);
  }

  .article-body h2 {
    padding-left: 0;
  }

  .article-body h2::before {
    position: static;
    display: inline-grid;
    margin-right: 0.65rem;
    vertical-align: middle;
  }

  .callout {
    padding: 3.2rem 1rem 1rem;
  }

  .callout::before {
    top: 0.9rem;
    left: 1rem;
  }
}

@media (prefers-reduced-motion: reduce) {
  .blog-filter-button,
  .article-card,
  .article-card::before,
  .article-body tbody tr,
  .related-card,
  .related-card::before,
  .post-nav-card {
    scroll-behavior: auto;
    transition: none;
  }

  .blog-filter-button:hover,
  .article-card:hover,
  .related-card:hover,
  .post-nav-card:hover {
    transform: none;
  }
}