:root {
  --blog-reading-width: 56rem;
  --blog-card-padding: clamp(1.5rem, 4vw, 2.75rem);
  --blog-stamp-size: clamp(4.5rem, 10vw, 6.5rem);
  --blog-transition: 180ms ease;
  --blog-table-min-width: 40rem;
  --blog-terminal-radius: var(--radius-md);
}

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

.article-hero {
  width: min(
    calc(100% - (var(--gutter) * 2)),
    calc(var(--blog-reading-width) + (var(--blog-card-padding) * 2))
  );
}

.blog-list-hero {
  padding-block: clamp(2.5rem, 7vw, 5rem) clamp(2rem, 5vw, 3.5rem);
}

.blog-hero-card,
.article-hero-card {
  position: relative;
  isolation: isolate;
  overflow: hidden;
  padding: clamp(2rem, 6vw, 4.5rem) var(--blog-card-padding);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  background:
    linear-gradient(
      145deg,
      var(--color-panel),
      color-mix(in srgb, var(--color-panel-alt) 72%, var(--color-panel))
    );
  box-shadow: var(--color-shadow-soft), var(--color-shadow-far);
}

.blog-hero-card::after,
.article-hero-card::after {
  position: absolute;
  z-index: -1;
  top: 1.35rem;
  right: 1.35rem;
  display: grid;
  width: var(--blog-stamp-size);
  aspect-ratio: 1;
  place-items: center;
  border: 2px solid color-mix(in srgb, var(--color-accent) 72%, transparent);
  border-radius: var(--radius-pill);
  box-shadow:
    inset 0 0 0 0.28rem var(--color-panel),
    inset 0 0 0 0.38rem color-mix(in srgb, var(--color-accent) 65%, transparent);
  color: var(--color-accent);
  content: "QS";
  font-family: var(--font-mono);
  font-size: clamp(1.2rem, 4vw, 2rem);
  font-weight: 800;
  letter-spacing: 0.08em;
  opacity: 0.72;
  transform: rotate(-11deg);
}

.blog-hero-card::before,
.article-hero-card::before {
  position: absolute;
  z-index: -1;
  top: calc(1.35rem + (var(--blog-stamp-size) / 2));
  right: 1.75rem;
  width: calc(var(--blog-stamp-size) - 0.8rem);
  border-top: 1px dashed var(--color-accent);
  content: "";
  opacity: 0.55;
  transform: rotate(-11deg);
}

.blog-hero-meta,
.article-hero-kicker {
  margin: 0 0 1rem;
  color: var(--color-accent);
  font-family: var(--font-mono);
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.1em;
}

.blog-list-hero h1 {
  max-width: 75%;
  margin: 0;
  color: var(--color-text);
  font-family: var(--font-display);
  font-size: clamp(2.2rem, 6vw, 3rem);
  font-weight: 900;
  letter-spacing: -0.02em;
  line-height: 1.12;
  text-wrap: pretty;
}

.blog-hero-lead {
  max-width: 38rem;
  margin: 1.25rem 0 0;
  color: var(--color-muted);
  font-size: 1.05rem;
  line-height: 1.8;
}

.blog-index-section {
  padding-block: clamp(2rem, 5vw, 4rem) var(--section-space);
}

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

.blog-index-heading h2 {
  margin: 0;
  font-family: var(--font-display);
  font-size: clamp(1.6rem, 4vw, 2.15rem);
  letter-spacing: -0.02em;
  text-wrap: pretty;
}

.blog-index-heading > p {
  margin: 0;
  color: var(--color-muted);
  font-size: 0.92rem;
}

.blog-filter {
  display: flex;
  flex-wrap: wrap;
  gap: 0.65rem;
  margin-bottom: 2rem;
}

.blog-filter-button {
  min-height: 2.65rem;
  padding: 0.65rem 1rem;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-pill);
  background: var(--color-panel);
  color: var(--color-muted);
  font: 700 0.9rem/1 var(--font-body);
  cursor: pointer;
  transition:
    border-color var(--blog-transition),
    background-color var(--blog-transition),
    color var(--blog-transition),
    transform var(--blog-transition);
}

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

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

.blog-filter-button:focus-visible,
.article-card a:focus-visible,
.related-card a:focus-visible,
.post-nav-card:focus-visible {
  outline: 3px solid color-mix(in srgb, var(--color-accent) 35%, transparent);
  outline-offset: 3px;
}

.article-list {
  display: grid;
  gap: 1rem;
}

.article-card {
  position: relative;
  padding: clamp(1.35rem, 4vw, 2rem);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  background: var(--color-panel);
  box-shadow: var(--color-shadow-soft);
  transition:
    border-color var(--blog-transition),
    box-shadow var(--blog-transition),
    transform var(--blog-transition);
}

.article-card::before {
  position: absolute;
  top: 0;
  right: 1.25rem;
  left: 1.25rem;
  height: 2px;
  border-radius: var(--radius-pill);
  background: var(--color-accent);
  content: "";
  opacity: 0;
  transition: opacity var(--blog-transition);
}

.article-card:hover {
  border-color: color-mix(in srgb, var(--color-accent) 58%, var(--color-border));
  box-shadow: var(--color-shadow-far);
  transform: translateY(-3px);
}

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

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

.article-meta {
  margin: 0 0 0.8rem;
}

.article-meta time,
.related-meta time {
  color: var(--color-muted);
  font-family: var(--font-mono);
  font-size: 0.78rem;
}

.article-card h3 {
  margin: 0;
  font-size: clamp(1.15rem, 3vw, 1.4rem);
  letter-spacing: -0.015em;
  line-height: 1.45;
  text-wrap: pretty;
}

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

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

.article-summary {
  margin: 0.85rem 0 1rem;
  color: var(--color-muted);
  font-size: 1rem;
  line-height: 1.8;
}

.article-link {
  color: var(--color-accent);
  font-size: 0.92rem;
  font-weight: 800;
  text-decoration: none;
}

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

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

/* Article shell */

.article-breadcrumbs {
  margin-top: clamp(1.5rem, 4vw, 2.5rem);
  padding-top: 0.25rem;
}

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

.article-breadcrumbs li:not(:last-child)::after {
  margin-left: 0.45rem;
  color: var(--color-border);
  content: "/";
}

.article-breadcrumbs a {
  color: var(--color-accent);
  text-decoration: none;
}

.article-breadcrumbs a:hover {
  text-decoration: underline;
}

.article-hero {
  padding-block: 1.25rem clamp(2rem, 5vw, 3rem);
}

.article-hero-card {
  padding-block: clamp(2rem, 5vw, 3.5rem);
}

.article-hero-meta {
  margin: 0 0 1rem;
}

.article-hero-meta > * {
  display: inline-flex;
  align-items: center;
  min-height: 2rem;
  padding: 0.35rem 0.75rem;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-pill);
  background: color-mix(in srgb, var(--color-panel) 84%, transparent);
  color: var(--color-muted);
  font-family: var(--font-mono);
  font-size: 0.76rem;
  line-height: 1;
}

.article-hero-meta .tag {
  border-color: var(--color-accent);
  background: var(--color-accent);
  color: var(--color-white);
}

.article-hero h1 {
  max-width: 45rem;
  margin: 0;
  color: var(--color-text);
  font-family: var(--font-display);
  font-size: clamp(2rem, 5vw, 2.6rem);
  font-weight: 900;
  letter-spacing: -0.02em;
  line-height: 1.25;
  text-wrap: pretty;
}

.article-deck {
  max-width: 46rem;
  margin: 1.25rem 0 0;
  color: var(--color-muted);
  font-size: 1.05rem;
  line-height: 1.85;
}

.article-body {
  counter-reset: article-section;
  color: var(--color-text);
  font-size: 1rem;
  line-height: 1.85;
}

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

.article-body h2 {
  position: relative;
  margin: 3.25rem 0 1.2rem;
  padding-left: 3rem;
  color: var(--color-text);
  font-family: var(--font-display);
  font-size: clamp(1.35rem, 3vw, 1.6rem);
  font-weight: 850;
  letter-spacing: -0.015em;
  line-height: 1.4;
  text-wrap: pretty;
  counter-increment: article-section;
}

.article-body h2::before {
  position: absolute;
  top: 0.04rem;
  left: 0;
  display: grid;
  width: 2.25rem;
  height: 2.25rem;
  place-items: center;
  border: 1px solid var(--color-accent);
  border-radius: var(--radius-pill);
  background: color-mix(in srgb, var(--color-accent) 10%, var(--color-panel));
  color: var(--color-accent);
  content: counter(article-section, decimal-leading-zero);
  font-family: var(--font-mono);
  font-size: 0.72rem;
  font-weight: 800;
}

.article-body h3 {
  margin: 2rem 0 0.75rem;
  color: var(--color-text);
  font-family: var(--font-display);
  font-size: clamp(1.12rem, 2.5vw, 1.3rem);
  letter-spacing: -0.01em;
  line-height: 1.5;
  text-wrap: pretty;
}

.article-body p,
.article-body ul,
.article-body ol,
.article-body blockquote,
.article-body table,
.article-body pre {
  margin-block: 1rem;
}

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

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

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

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

.article-body blockquote {
  padding: 1rem 1.2rem;
  border-left: 4px solid var(--color-accent);
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  background: color-mix(in srgb, var(--color-accent) 7%, var(--color-panel));
  color: var(--color-muted);
}

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

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

/* Rich text anchors */

.stat-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(min(100%, 10rem), 1fr));
  gap: 0.8rem;
  margin-block: 1.5rem;
}

.stat-card {
  position: relative;
  overflow: hidden;
  padding: 1.15rem;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  background: color-mix(in srgb, var(--color-accent) 7%, var(--color-panel));
}

.stat-card::before {
  position: absolute;
  inset: 0 0 auto;
  height: 0.25rem;
  background: var(--color-accent);
  content: "";
}

.stat-card:nth-child(even) {
  background: color-mix(in srgb, var(--color-warn) 9%, var(--color-panel));
}

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

.stat-num {
  display: block;
  margin-top: 0.2rem;
  color: var(--color-text);
  font-family: var(--font-mono);
  font-size: clamp(1.35rem, 4vw, 1.8rem);
  font-weight: 800;
}

.stat-label {
  display: block;
  margin-top: 0.25rem;
  color: var(--color-muted);
  font-size: 0.85rem;
  line-height: 1.55;
}

.check-list {
  display: grid;
  gap: 0.65rem;
  margin-block: 1.5rem;
  padding: 0;
  list-style: none;
}

.check-list li {
  margin: 0;
  padding: 0.85rem 1rem;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  background: var(--color-panel);
}

.verdict {
  margin-block: 1.5rem;
  padding: 1.1rem 1.2rem;
  border-left: 4px solid var(--color-accent);
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  background: color-mix(in srgb, var(--color-accent) 8%, var(--color-panel));
}

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

.callout {
  position: relative;
  margin-block: 1.5rem;
  padding: 1.15rem 1.2rem 1.15rem 3.5rem;
  border: 1px solid color-mix(in srgb, var(--color-accent) 34%, var(--color-border));
  border-left: 4px solid var(--color-accent);
  border-radius: var(--radius-sm);
  background: color-mix(in srgb, var(--color-accent) 8%, var(--color-panel));
}

.callout::before {
  position: absolute;
  top: 1rem;
  left: 1rem;
  display: grid;
  width: 1.65rem;
  height: 1.65rem;
  place-items: center;
  border-radius: var(--radius-pill);
  background: var(--color-accent);
  color: var(--color-white);
  content: "i";
  font-family: var(--font-mono);
  font-size: 0.78rem;
  font-weight: 800;
}

.callout.warning {
  border-color: color-mix(in srgb, var(--color-warn) 42%, var(--color-border));
  border-left-color: var(--color-warn);
  background: color-mix(in srgb, var(--color-warn) 10%, var(--color-panel));
}

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

.callout.success {
  border-color: color-mix(in srgb, var(--color-success) 42%, var(--color-border));
  border-left-color: var(--color-success);
  background: color-mix(in srgb, var(--color-success) 9%, var(--color-panel));
}

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

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

.callout > :last-child {
  margin-bottom: 0;
}

.callout-title {
  color: var(--color-text);
  font-weight: 800;
}

.article-body table {
  width: 100%;
  border-collapse: collapse;
  border: 1px solid var(--color-border);
  font-size: 0.92rem;
}

.article-body th,
.article-body td {
  padding: 0.8rem 0.9rem;
  border: 1px solid var(--color-border);
  text-align: left;
  vertical-align: top;
}

.article-body thead {
  background: var(--color-accent-dark);
  color: var(--color-white);
}

.article-body tbody tr:nth-child(even) {
  background: color-mix(in srgb, var(--color-panel-alt) 62%, var(--color-panel));
}

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

.article-body tbody tr:hover {
  background: color-mix(in srgb, var(--color-accent) 9%, var(--color-panel));
}

.article-body pre {
  position: relative;
  overflow-x: auto;
  padding: 2.7rem 1.2rem 1.2rem;
  border: 1px solid color-mix(in srgb, var(--color-text) 78%, var(--color-border));
  border-radius: var(--blog-terminal-radius);
  background: var(--color-text);
  color: var(--color-panel);
  box-shadow: var(--color-shadow-soft);
}

.article-body pre::before {
  position: absolute;
  top: 0.95rem;
  left: 1rem;
  width: 0.62rem;
  height: 0.62rem;
  border-radius: var(--radius-pill);
  background: var(--color-error);
  box-shadow:
    1rem 0 0 var(--color-warn),
    2rem 0 0 var(--color-success);
  content: "";
}

.article-body pre code {
  color: inherit;
  font-family: var(--font-mono);
  font-size: 0.85rem;
  line-height: 1.7;
}

/* Article ending */

.article-end {
  padding-top: clamp(2.5rem, 6vw, 4rem);
}

.promo-block {
  position: relative;
  overflow: hidden;
  margin: 0;
  padding: clamp(1.5rem, 5vw, 2.5rem);
  border: 1px solid var(--color-accent-dark);
  border-radius: var(--radius-lg);
  background:
    linear-gradient(
      135deg,
      var(--color-accent-dark),
      color-mix(in srgb, var(--color-accent) 82%, var(--color-panel))
    );
  color: var(--color-white);
  box-shadow: var(--color-shadow-accent);
}

.promo-block::after {
  position: absolute;
  top: 1rem;
  right: 1rem;
  width: 5rem;
  aspect-ratio: 1;
  border: 1px dashed color-mix(in srgb, var(--color-white) 68%, transparent);
  border-radius: var(--radius-pill);
  content: "";
  opacity: 0.7;
}

.promo-content {
  position: relative;
  z-index: 1;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.5rem;
}

.promo-copy {
  max-width: 37rem;
}

.promo-block .eyebrow,
.promo-block h2,
.promo-block p {
  color: var(--color-white);
}

.promo-block h2 {
  margin: 0.35rem 0 0.65rem;
  font-size: clamp(1.45rem, 3vw, 1.9rem);
  letter-spacing: -0.015em;
  text-wrap: pretty;
}

.promo-block p {
  margin-block: 0;
  line-height: 1.75;
}

.promo-block .btn-primary {
  flex: 0 0 auto;
  border-color: var(--color-white);
  background: var(--color-white);
  color: var(--color-accent-dark);
}

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

#related-posts {
  padding-top: clamp(2.5rem, 5vw, 4rem);
}

#related-posts > h2 {
  margin: 0 0 1.25rem;
  font-family: var(--font-display);
  font-size: clamp(1.4rem, 3vw, 1.8rem);
  letter-spacing: -0.015em;
  text-wrap: pretty;
}

.related-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 0.85rem;
}

.related-card {
  position: relative;
  padding: 1.15rem;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  background: var(--color-panel);
  transition:
    border-color var(--blog-transition),
    transform var(--blog-transition),
    box-shadow var(--blog-transition);
}

.related-card::before {
  position: absolute;
  inset: 0 1rem auto;
  height: 2px;
  border-radius: var(--radius-pill);
  background: var(--color-accent);
  content: "";
  opacity: 0;
  transition: opacity var(--blog-transition);
}

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

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

.related-meta {
  margin: 0 0 0.7rem;
}

.related-card h3 {
  margin: 0;
  font-size: 1rem;
  letter-spacing: -0.01em;
  line-height: 1.55;
  text-wrap: pretty;
}

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

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

.related-card > p:last-child {
  display: -webkit-box;
  margin: 0.7rem 0 0;
  overflow: hidden;
  color: var(--color-muted);
  font-size: 0.86rem;
  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: 0.85rem;
  padding-top: 1.25rem;
  padding-bottom: clamp(2rem, 4vw, 3rem);
}

.post-nav-card {
  position: relative;
  display: flex;
  min-height: 7rem;
  flex-direction: column;
  justify-content: center;
  gap: 0.45rem;
  padding: 1.1rem;
  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-accent);
  box-shadow: var(--color-shadow-soft);
  transform: translateY(-2px);
}

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

.post-nav-label {
  color: var(--color-accent);
  font-family: var(--font-mono);
  font-size: 0.76rem;
  font-weight: 800;
}

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

.no-break {
  white-space: nowrap;
}

@media (max-width: 860px) {
  .article-body table {
    display: block;
    width: fit-content;
    min-width: min(100%, var(--blog-table-min-width));
    max-width: 100%;
    overflow-x: auto;
    white-space: nowrap;
  }

  .related-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 680px) {
  .blog-hero-card::after,
  .article-hero-card::after {
    opacity: 0.28;
  }

  .blog-list-hero h1 {
    max-width: 100%;
  }

  .blog-index-heading,
  .promo-content {
    align-items: flex-start;
    flex-direction: column;
  }

  .blog-index-heading > p {
    display: none;
  }

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

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

  .article-hero h1 {
    font-size: clamp(1.85rem, 9vw, 2.35rem);
  }

  .article-body h2 {
    margin-top: 2.6rem;
  }

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

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

@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 {
    transition: none;
  }

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