:root {
  --blog-reading-width: 56rem;
  --blog-rule-size: 0.25rem;
  --blog-thin-rule: 0.0625rem;
  --blog-meta-size: 0.8125rem;
  --blog-body-size: 1rem;
  --blog-body-leading: 1.86;
  --blog-hero-title-max: 2.6rem;
  --blog-list-title-max: 3rem;
  --blog-h2-max: 1.6rem;
  --blog-h3-max: 1.3rem;
  --blog-card-lift: -0.2rem;
  --blog-transition: 180ms ease;
  --blog-section-gap: clamp(2.75rem, 6vw, 4.5rem);
  --blog-content-gap: 1.4rem;
  --blog-card-padding: clamp(1.25rem, 3vw, 1.75rem);
  --blog-hero-padding: clamp(2.2rem, 6vw, 4.5rem);
  --blog-float-safe-space: 5rem;
}

.blog-reading,
.article-reading,
.article-breadcrumb,
.article-hero,
.prose,
.promo-block,
#related-posts,
#post-nav {
  width: min(100%, var(--blog-reading-width));
  margin-inline: auto;
}

.blog-index-page,
.article-page {
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-body);
}

.article-page {
  padding-bottom: var(--blog-float-safe-space);
}

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

.blog-list-rule,
.article-hero-rule {
  width: 100%;
  height: var(--blog-rule-size);
  margin-bottom: 1.4rem;
  border-radius: var(--radius-pill);
  background: linear-gradient(90deg, var(--accent), var(--accent-dark));
  box-shadow: var(--accent-glow-soft);
}

.blog-list-hero h1 {
  max-width: 14ch;
  margin: 0.85rem 0 1rem;
  color: var(--text);
  font-family: var(--font-display);
  font-size: clamp(2.2rem, 7vw, var(--blog-list-title-max));
  line-height: 1.08;
  letter-spacing: -0.02em;
  text-wrap: pretty;
}

.blog-list-intro {
  max-width: 42rem;
  margin: 0;
  color: var(--text-muted);
  font-size: 1.05rem;
  line-height: 1.8;
}

.blog-filter-bar {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 1.25rem;
  padding-bottom: 1.15rem;
  border-bottom: var(--blog-thin-rule) solid var(--border);
}

.blog-filter-bar h2 {
  margin: 0;
  color: var(--text);
  font-family: var(--font-display);
  font-size: clamp(1.35rem, 4vw, 1.75rem);
  letter-spacing: -0.015em;
  text-wrap: pretty;
}

.blog-filter-list {
  display: flex;
  flex-wrap: wrap;
  justify-content: flex-end;
  gap: 0.55rem;
}

.blog-filter {
  min-height: 2.35rem;
  padding: 0.55rem 0.9rem;
  border: var(--blog-thin-rule) solid var(--border);
  border-radius: var(--radius-pill);
  background: var(--bg-panel);
  color: var(--text-muted);
  font: 600 var(--blog-meta-size)/1 var(--font-body);
  cursor: pointer;
  transition:
    color var(--blog-transition),
    border-color var(--blog-transition),
    background-color var(--blog-transition);
}

.blog-filter:hover,
.blog-filter:focus-visible {
  border-color: var(--accent);
  color: var(--text);
}

.blog-filter.is-active {
  border-color: var(--accent);
  background: var(--accent);
  color: var(--bg);
  box-shadow: var(--accent-glow-soft);
}

.article-list {
  display: grid;
  gap: 1rem;
  padding-block: 1.5rem;
}

.article-card {
  position: relative;
  padding: var(--blog-card-padding);
  overflow: hidden;
  border: var(--blog-thin-rule) solid var(--border);
  border-radius: var(--radius-md);
  background: var(--bg-panel);
  transition:
    transform var(--blog-transition),
    border-color var(--blog-transition),
    background-color var(--blog-transition);
}

.article-card::before,
.related-card::before,
.post-nav-card::before {
  position: absolute;
  inset: 0 0 auto;
  height: var(--blog-rule-size);
  background: linear-gradient(90deg, var(--accent), var(--accent-dark));
  opacity: 0;
  content: "";
  transition: opacity var(--blog-transition);
}

.article-card:hover,
.article-card:focus-within {
  transform: translateY(var(--blog-card-lift));
  border-color: var(--accent);
  background: var(--bg-panel-2);
}

.article-card:hover::before,
.article-card:focus-within::before,
.related-card:hover::before,
.related-card:focus-within::before,
.post-nav-card:hover::before,
.post-nav-card:focus-visible::before {
  opacity: 1;
}

.article-meta,
.related-card-meta,
.article-hero-meta {
  display: flex;
  align-items: center;
  justify-content: flex-start;
  flex-wrap: wrap;
  gap: 0.55rem;
  margin: 0;
  color: var(--text-muted);
  font: 500 var(--blog-meta-size)/1.4 var(--font-mono);
}

.article-meta .tag,
.related-card-meta .tag,
.article-hero-meta .tag {
  display: inline-flex;
  align-items: center;
  min-height: 1.75rem;
  padding-inline: 0.65rem;
  border-radius: var(--radius-pill);
  background: var(--accent);
  color: var(--bg);
  font-family: var(--font-body);
  font-weight: 700;
}

.article-meta time,
.related-card-meta time,
.article-hero-meta time,
.article-read-time {
  display: inline-flex;
  align-items: center;
  min-height: 1.75rem;
  padding-inline: 0.65rem;
  border: var(--blog-thin-rule) solid var(--border);
  border-radius: var(--radius-pill);
  color: var(--text-muted);
}

.article-card h3 {
  margin: 1rem 0 0.7rem;
  font-family: var(--font-display);
  font-size: clamp(1.2rem, 3vw, 1.5rem);
  line-height: 1.38;
  letter-spacing: -0.015em;
  text-wrap: pretty;
}

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

.article-card h3 a::after {
  position: absolute;
  inset: 0;
  content: "";
}

.article-summary {
  max-width: 48rem;
  margin: 0;
  color: var(--text-muted);
  font-size: var(--blog-body-size);
  line-height: 1.8;
}

.article-read-link {
  position: relative;
  z-index: 1;
  display: inline-flex;
  margin-top: 1rem;
  color: var(--accent);
  font-weight: 700;
  text-decoration: none;
}

.article-read-link::after {
  margin-left: 0.35rem;
  content: "→";
}

.blog-empty {
  margin: 0;
  padding: 1.5rem;
  border: var(--blog-thin-rule) dashed var(--border);
  border-radius: var(--radius-md);
  color: var(--text-muted);
  text-align: center;
}

.blog-list-note {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 2rem;
  padding: clamp(1.5rem, 4vw, 2.25rem);
  border: var(--blog-thin-rule) solid var(--border);
  border-radius: var(--radius-lg);
  background:
    linear-gradient(135deg, color-mix(in srgb, var(--accent-dark) 24%, var(--bg-panel)), var(--bg-panel));
}

.blog-list-note h2 {
  margin: 0.85rem 0 0.55rem;
  color: var(--text);
  font-family: var(--font-display);
  font-size: clamp(1.4rem, 4vw, 1.9rem);
  letter-spacing: -0.015em;
  text-wrap: pretty;
}

.blog-list-note p {
  margin: 0;
  color: var(--text-muted);
  line-height: 1.75;
}

.blog-list-actions {
  display: flex;
  flex: 0 0 auto;
  flex-wrap: wrap;
  gap: 0.7rem;
}

.article-breadcrumb {
  margin-top: 1.5rem;
  padding-top: 0.25rem;
  color: var(--text-muted);
  font-size: var(--blog-meta-size);
}

.article-breadcrumb ol {
  display: flex;
  flex-wrap: wrap;
  gap: 0.45rem;
  margin: 0;
  padding: 0;
  list-style: none;
}

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

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

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

.article-hero {
  padding-block: clamp(2rem, 6vw, 3.75rem) 1.7rem;
  border-bottom: var(--blog-thin-rule) solid var(--border);
}

.article-hero h1 {
  max-width: 21ch;
  margin: 1rem 0;
  color: var(--text);
  font-family: var(--font-display);
  font-size: clamp(2rem, 6vw, var(--blog-hero-title-max));
  line-height: 1.18;
  letter-spacing: -0.02em;
  text-wrap: pretty;
}

.article-deck {
  max-width: 50rem;
  margin: 0;
  color: var(--text-muted);
  font-size: clamp(1rem, 2vw, 1.12rem);
  line-height: 1.82;
}

.prose {
  counter-reset: blog-section;
  padding-block: clamp(1.8rem, 5vw, 3rem);
  color: var(--text);
  font-size: var(--blog-body-size);
  line-height: var(--blog-body-leading);
}

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

.prose h2 {
  counter-increment: blog-section;
  display: flex;
  align-items: flex-start;
  gap: 0.75rem;
  margin: 2.7rem 0 1rem;
  color: var(--text);
  font-family: var(--font-display);
  font-size: clamp(1.35rem, 4vw, var(--blog-h2-max));
  line-height: 1.35;
  letter-spacing: -0.015em;
  text-wrap: pretty;
}

.prose h2::before {
  display: inline-grid;
  flex: 0 0 auto;
  place-items: center;
  min-width: 2rem;
  height: 2rem;
  margin-top: 0.05rem;
  border: var(--blog-thin-rule) solid var(--accent);
  border-radius: var(--radius-sm);
  background: color-mix(in srgb, var(--accent) 12%, var(--bg-panel));
  color: var(--accent);
  font: 700 0.78rem/1 var(--font-mono);
  content: counter(blog-section, decimal-leading-zero);
}

.prose h3 {
  margin: 2rem 0 0.75rem;
  color: var(--text);
  font-family: var(--font-display);
  font-size: clamp(1.12rem, 3vw, var(--blog-h3-max));
  line-height: 1.45;
  letter-spacing: -0.01em;
  text-wrap: pretty;
}

.prose p,
.prose ul,
.prose ol,
.prose blockquote {
  margin-block: 0 1.25rem;
}

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

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

.prose a {
  color: var(--accent);
  text-decoration-color: color-mix(in srgb, var(--accent) 55%, var(--bg));
  text-underline-offset: 0.2em;
}

.prose strong {
  color: var(--text);
}

.prose blockquote {
  padding: 1rem 1.15rem;
  border-left: var(--blog-rule-size) solid var(--accent);
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  background: color-mix(in srgb, var(--accent) 8%, var(--bg-panel));
  color: var(--text-muted);
}

.prose table,
.prose > .data-table {
  width: 100%;
  margin-block: 1.5rem;
  border-collapse: collapse;
  border-spacing: 0;
  font-size: 0.92rem;
}

.prose th,
.prose td {
  min-width: 8rem;
  padding: 0.8rem 0.9rem;
  border: var(--blog-thin-rule) solid var(--border);
  text-align: left;
  vertical-align: top;
}

.prose th {
  background: var(--accent-dark);
  color: var(--text);
  font-weight: 700;
}

.prose tbody tr:nth-child(odd) {
  background: var(--bg-panel);
}

.prose tbody tr:nth-child(even) {
  background: var(--bg-panel-2);
}

.prose tbody tr:hover {
  background: color-mix(in srgb, var(--accent) 10%, var(--bg-panel-2));
}

.prose pre {
  position: relative;
  margin-block: 1.5rem;
  padding: 2.8rem 1.15rem 1.2rem;
  overflow-x: auto;
  border: var(--blog-thin-rule) solid var(--border);
  border-radius: var(--radius-md);
  background: color-mix(in srgb, var(--bg) 86%, var(--accent-dark));
  color: var(--text);
  box-shadow: inset 0 var(--blog-rule-size) 0 var(--border);
}

.prose pre::before {
  position: absolute;
  top: 0.9rem;
  left: 1rem;
  color: var(--error);
  font-size: 1.25rem;
  letter-spacing: 0.45rem;
  line-height: 1;
  content: "● ● ●";
  text-shadow:
    1.05rem 0 var(--warn),
    2.1rem 0 var(--success);
}

.prose pre code {
  color: inherit;
  font-family: var(--font-mono);
  font-size: 0.88rem;
  line-height: 1.75;
}

.callout {
  position: relative;
  margin-block: 1.5rem;
  padding: 1.1rem 1.2rem 1.1rem 3.7rem;
  border: var(--blog-thin-rule) solid color-mix(in srgb, var(--accent) 38%, var(--border));
  border-left: var(--blog-rule-size) solid var(--accent);
  border-radius: var(--radius-md);
  background: color-mix(in srgb, var(--accent) 9%, var(--bg-panel));
  color: var(--text);
}

.callout::before {
  position: absolute;
  top: 1.05rem;
  left: 1.1rem;
  display: grid;
  width: 1.75rem;
  height: 1.75rem;
  place-items: center;
  border-radius: var(--radius-pill);
  background: var(--accent);
  color: var(--bg);
  font: 800 0.85rem/1 var(--font-mono);
  content: "i";
}

.callout strong {
  display: block;
  margin-bottom: 0.25rem;
}

.callout-warn {
  border-color: color-mix(in srgb, var(--warn) 45%, var(--border));
  border-left-color: var(--warn);
  background: color-mix(in srgb, var(--warn) 10%, var(--bg-panel));
}

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

.callout-success {
  border-color: color-mix(in srgb, var(--success) 45%, var(--border));
  border-left-color: var(--success);
  background: color-mix(in srgb, var(--success) 10%, var(--bg-panel));
}

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

.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;
  min-height: 7.5rem;
  padding: 1.1rem;
  overflow: hidden;
  border: var(--blog-thin-rule) solid var(--border);
  border-radius: var(--radius-md);
  background: color-mix(in srgb, var(--accent) 7%, var(--bg-panel));
}

.stat-card::before {
  position: absolute;
  inset: 0 0 auto;
  height: var(--blog-rule-size);
  background: var(--accent);
  content: "";
}

.stat-card:nth-child(even) {
  background: color-mix(in srgb, var(--success) 7%, var(--bg-panel-2));
}

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

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

.stat-num {
  display: block;
  margin-bottom: 0.45rem;
  color: var(--text);
  font: 750 clamp(1.35rem, 4vw, 1.8rem)/1.2 var(--font-display);
  letter-spacing: -0.015em;
}

.stat-label {
  color: var(--text-muted);
  font-size: 0.9rem;
  line-height: 1.55;
}

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

.check-list li {
  padding: 0.8rem 0.95rem;
  border: var(--blog-thin-rule) solid var(--border);
  border-radius: var(--radius-sm);
  background: var(--bg-panel);
}

.check-list li + li {
  margin-top: 0.6rem;
}

.verdict {
  margin-block: 1.5rem;
  padding: 1rem 1.15rem;
  border-left: var(--blog-rule-size) solid var(--accent);
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  background: color-mix(in srgb, var(--accent) 10%, var(--bg-panel-2));
  color: var(--text);
}

.verdict strong:first-child {
  display: block;
  margin-bottom: 0.25rem;
  color: var(--accent);
}

.promo-block {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 2rem;
  margin-top: 1.5rem;
  padding: clamp(1.5rem, 5vw, 2.5rem);
  overflow: hidden;
  border: var(--blog-thin-rule) solid color-mix(in srgb, var(--accent) 70%, var(--border));
  border-radius: var(--radius-lg);
  background: linear-gradient(135deg, var(--accent), color-mix(in srgb, var(--accent-dark) 82%, var(--bg)));
  color: var(--bg);
  box-shadow: var(--accent-glow);
}

.promo-block::after {
  position: absolute;
  right: -2rem;
  bottom: -3rem;
  width: 10rem;
  height: 10rem;
  border: 1.25rem double color-mix(in srgb, var(--text) 22%, var(--accent));
  border-radius: var(--radius-pill);
  content: "";
  opacity: 0.55;
}

.promo-block > * {
  position: relative;
  z-index: 1;
}

.promo-brand {
  display: inline-block;
  color: var(--bg);
  font: 800 0.82rem/1 var(--font-mono);
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.promo-block h2 {
  margin: 0.55rem 0;
  color: var(--bg);
  font-family: var(--font-display);
  font-size: clamp(1.45rem, 4vw, 2rem);
  letter-spacing: -0.015em;
  text-wrap: pretty;
}

.promo-block p {
  margin: 0;
  color: color-mix(in srgb, var(--bg) 86%, var(--text));
  line-height: 1.7;
}

.promo-block .btn-primary {
  flex: 0 0 auto;
  border-color: var(--text);
  background: var(--text);
  color: var(--bg);
  box-shadow: none;
}

.promo-block .btn-primary:hover,
.promo-block .btn-primary:focus-visible {
  border-color: var(--bg);
  background: var(--bg);
  color: var(--text);
}

.promo-block .btn-secondary {
  border-color: var(--bg);
  background: color-mix(in srgb, var(--accent) 70%, var(--bg));
  color: var(--bg);
}

#related-posts {
  padding-top: clamp(2rem, 5vw, 3rem);
}

.related-heading {
  margin: 0 0 1rem;
  color: var(--text);
  font-family: var(--font-display);
  font-size: clamp(1.35rem, 4vw, var(--blog-h2-max));
  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: 1.1rem;
  overflow: hidden;
  border: var(--blog-thin-rule) solid var(--border);
  border-radius: var(--radius-md);
  background: var(--bg-panel);
  transition:
    transform var(--blog-transition),
    border-color var(--blog-transition),
    background-color var(--blog-transition);
}

.related-card:hover,
.related-card:focus-within {
  transform: translateY(var(--blog-card-lift));
  border-color: var(--accent);
  background: var(--bg-panel-2);
}

.related-card h3 {
  margin: 0.85rem 0 0.55rem;
  font-family: var(--font-display);
  font-size: 1.05rem;
  line-height: 1.5;
  letter-spacing: -0.01em;
  text-wrap: pretty;
}

.related-card-summary {
  display: -webkit-box;
  margin: 0;
  overflow: hidden;
  color: var(--text-muted);
  font-size: 0.9rem;
  line-height: 1.65;
  -webkit-box-orient: vertical;
  -webkit-line-clamp: 3;
}

#post-nav {
  padding-block: clamp(1.25rem, 3vw, 2rem) 1.5rem;
}

.post-nav-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0.85rem;
}

.post-nav-card {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 0.55rem;
  min-height: 7rem;
  padding: 1.1rem;
  overflow: hidden;
  border: var(--blog-thin-rule) solid var(--border);
  border-radius: var(--radius-md);
  background: var(--bg-panel);
  color: var(--text);
  text-decoration: none;
  transition:
    transform var(--blog-transition),
    border-color var(--blog-transition),
    background-color var(--blog-transition);
}

.post-nav-card:hover,
.post-nav-card:focus-visible {
  transform: translateY(var(--blog-card-lift));
  border-color: var(--accent);
  background: var(--bg-panel-2);
}

.post-nav-label {
  color: var(--accent);
  font: 700 var(--blog-meta-size)/1.3 var(--font-mono);
}

.post-nav-card strong {
  font-family: var(--font-display);
  font-size: 1rem;
  line-height: 1.5;
  letter-spacing: -0.01em;
}

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

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

.float-cta:hover,
.float-cta:focus-visible {
  transform: translateY(var(--blog-card-lift));
  box-shadow: var(--accent-glow-strong);
}

.float-cta svg {
  flex: 0 0 auto;
  width: 1.2rem;
  height: 1.2rem;
  fill: currentColor;
}

@media (max-width: 860px) {
  .prose table,
  .prose > .data-table {
    display: block;
    width: fit-content;
    max-width: 100%;
    overflow-x: auto;
    overscroll-behavior-inline: contain;
  }

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

@media (max-width: 680px) {
  .article-breadcrumb,
  .article-hero,
  .prose {
    padding-inline: 1rem;
  }

  .article-hero h1 .no-break,
  .prose h2 .no-break {
    white-space: normal;
  }

  .blog-filter-bar,
  .blog-list-note,
  .promo-block {
    align-items: flex-start;
    flex-direction: column;
  }

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

  .blog-list-actions,
  .blog-list-actions .btn,
  .promo-block .btn {
    width: 100%;
  }

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

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

  .float-cta {
    right: 0.75rem;
    bottom: 0.75rem;
    max-width: calc(100vw - 1.5rem);
    min-height: 2.75rem;
    padding: 0.6rem 0.85rem;
    font-size: 0.9rem;
  }
}

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

  .article-card:hover,
  .article-card:focus-within,
  .related-card:hover,
  .related-card:focus-within,
  .post-nav-card:hover,
  .post-nav-card:focus-visible,
  .float-cta:hover,
  .float-cta:focus-visible {
    transform: none;
  }
}