:root {
  --blog-reading-col: 56rem;
  --blog-reading-pad: 2rem;
  --blog-card-pad: 1.4rem;
}

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

.blog-main,
.article-main {
  overflow-x: clip;
}

.blog-main {
  padding-bottom: 1rem;
}

.blog-hero {
  position: relative;
  isolation: isolate;
  overflow-x: clip;
  padding-top: clamp(2.2rem, 5vw, 3.6rem);
  padding-bottom: clamp(1.2rem, 3vw, 2rem);
  background:
    radial-gradient(circle at 82% 12%, var(--accent-a12), transparent 42%),
    radial-gradient(circle at 12% 18%, var(--violet-a10), transparent 40%),
    linear-gradient(180deg, var(--bg-top), var(--bg));
  border-bottom: 1px solid var(--border-soft);
}

.blog-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: 0;
  background-image:
    linear-gradient(var(--grid-line) 1px, transparent 1px),
    linear-gradient(90deg, var(--grid-line) 1px, transparent 1px);
  background-size: 32px 32px;
  opacity: 0.5;
  -webkit-mask-image: radial-gradient(ellipse at 50% 30%, var(--text) 0%, transparent 72%);
  mask-image: radial-gradient(ellipse at 50% 30%, var(--text) 0%, transparent 72%);
  pointer-events: none;
}

.blog-hero-inner {
  position: relative;
  z-index: 1;
  max-width: 48rem;
  margin-inline: auto;
  text-align: center;
}

.blog-hero-title {
  margin: 0.6rem 0 0.9rem;
  font-family: var(--font-display);
  font-size: clamp(2rem, 4.6vw, 3rem);
  font-weight: 800;
  line-height: 1.16;
  letter-spacing: -0.02em;
  color: var(--text);
  text-wrap: pretty;
}

.blog-hero-lede {
  max-width: 40rem;
  margin: 0 auto;
  color: var(--text-muted);
  font-size: 1rem;
  line-height: 1.8;
}

.blog-hero-actions {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 0.7rem;
  margin-top: 1.25rem;
}

.blog-filter {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 0.55rem;
  margin-top: 1.2rem;
}

.filter-btn {
  box-sizing: border-box;
  appearance: none;
  border: 1px solid var(--border);
  border-radius: var(--radius-pill);
  background: var(--bg-panel);
  color: var(--text-muted);
  font: inherit;
  font-size: 0.9rem;
  line-height: 1.2;
  padding: 0.55rem 1rem;
  cursor: pointer;
  transition: color 0.2s ease, background 0.2s ease, border-color 0.2s ease, box-shadow 0.2s ease;
}

.filter-btn:hover {
  border-color: var(--accent-a35);
  color: var(--accent-dark);
}

.filter-btn.is-active,
.filter-btn[aria-pressed="true"] {
  background: var(--bg-panel-2);
  background: color-mix(in srgb, var(--accent) 12%, var(--surface));
  border-color: var(--accent-a35);
  border-color: color-mix(in srgb, var(--accent) 30%, var(--border));
  color: var(--accent-dark);
  box-shadow: inset 0 0 0 1px var(--accent-a12);
}

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

.blog-list-section {
  padding-top: 1.5rem;
  padding-bottom: clamp(3rem, 6vw, 4.5rem);
}

.blog-list-head {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  justify-content: space-between;
  gap: 0.6rem 1rem;
}

.blog-list-title {
  margin: 0;
  font-family: var(--font-display);
  font-size: clamp(1.3rem, 2.4vw, 1.6rem);
  font-weight: 700;
  line-height: 1.35;
  letter-spacing: -0.02em;
  color: var(--text);
  text-wrap: pretty;
}

.blog-count {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 0.82rem;
  color: var(--text-muted);
}

.blog-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(min(100%, 20rem), 1fr));
  gap: 1rem;
  margin-top: 1.2rem;
}

.post-card {
  position: relative;
  display: block;
  box-sizing: border-box;
  min-width: 0;
  height: 100%;
  padding: var(--blog-card-pad) 1.5rem;
  overflow: hidden;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-card);
  color: inherit;
  text-decoration: none;
  transition: transform 0.22s ease, box-shadow 0.22s ease, border-color 0.22s ease;
}

.post-card::before {
  content: "";
  position: absolute;
  inset: 0 0 auto;
  height: 3px;
  background: linear-gradient(90deg, var(--accent), var(--violet));
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.22s ease;
}

.post-card:hover {
  transform: translateY(-3px);
  border-color: var(--accent-a35);
  box-shadow: var(--shadow-soft);
}

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

.post-card:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 3px;
}

.post-meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.5rem 0.7rem;
}

.post-tag {
  display: inline-flex;
  align-items: center;
  box-sizing: border-box;
  min-height: 1.6rem;
  padding: 0.15rem 0.6rem;
  border-radius: var(--radius-pill);
  background: var(--accent);
  color: var(--surface);
  font-size: 0.76rem;
  font-weight: 600;
  line-height: 1.2;
}

.post-meta time {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--text-muted);
}

.post-title {
  margin: 0.75rem 0 0.5rem;
  font-family: var(--font-display);
  font-size: clamp(1.12rem, 2vw, 1.3rem);
  font-weight: 700;
  line-height: 1.38;
  letter-spacing: -0.02em;
  color: var(--text);
  text-wrap: pretty;
}

.post-summary {
  margin: 0 0 1rem;
  color: var(--text-muted);
  font-size: 0.94rem;
  line-height: 1.75;
}

.post-more {
  display: inline-block;
  color: var(--accent-dark);
  font-size: 0.88rem;
  font-weight: 600;
}

.post-card:hover .post-more {
  color: var(--accent);
}

.post-empty {
  grid-column: 1 / -1;
  margin: 0;
  padding: 2rem 1.5rem;
  border: 1px dashed var(--border);
  border-radius: var(--radius-lg);
  background: var(--bg-panel);
  color: var(--text-muted);
  text-align: center;
  line-height: 1.8;
}

.article-main {
  padding-top: 0.6rem;
  padding-bottom: 1rem;
}

.reading-wrap {
  box-sizing: border-box;
  width: min(calc(100% - var(--gutter) - var(--gutter)), calc(var(--blog-reading-col) + var(--blog-reading-pad) + var(--blog-reading-pad)));
  max-width: none;
  margin-inline: auto;
  padding-inline: var(--blog-reading-pad);
}

.breadcrumbs {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.35rem 0.55rem;
  box-sizing: border-box;
  margin-top: 1.2rem;
  padding-top: 0.4rem;
  padding-inline: var(--blog-reading-pad);
  color: var(--text-muted);
  font-size: 0.82rem;
  line-height: 1.6;
}

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

.breadcrumbs a:hover {
  color: var(--accent-dark);
  text-decoration: underline;
  text-underline-offset: 0.18em;
}

.breadcrumbs .sep {
  color: var(--border);
}

.breadcrumbs [aria-current="page"] {
  color: var(--text);
  font-weight: 600;
}

.article-hero {
  position: relative;
  isolation: isolate;
  box-sizing: border-box;
  overflow: hidden;
  margin: 1.25rem 0 2rem;
  padding: 1.8rem var(--blog-reading-pad);
  background: var(--bg-panel);
  background: linear-gradient(
    135deg,
    color-mix(in srgb, var(--accent) 7%, var(--surface)),
    color-mix(in srgb, var(--violet) 9%, var(--surface))
  );
  border: 1px solid var(--border);
  border-color: color-mix(in srgb, var(--accent) 16%, var(--border));
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-card);
}

.article-hero::before {
  content: "";
  position: absolute;
  top: 1rem;
  bottom: 1rem;
  left: 0.75rem;
  width: 6px;
  border-radius: var(--radius-pill);
  background: linear-gradient(180deg, var(--accent), var(--violet));
  z-index: 0;
}

.article-hero > * {
  position: relative;
  z-index: 1;
}

.article-meta,
.article-hero .post-meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.5rem;
  margin: 0 0 1rem;
}

.meta-pill {
  display: inline-flex;
  align-items: center;
  box-sizing: border-box;
  min-height: 1.75rem;
  padding: 0.2rem 0.7rem;
  border-radius: var(--radius-pill);
  font-family: var(--font-mono);
  font-size: 0.76rem;
  line-height: 1.2;
  white-space: nowrap;
}

.meta-pill--tag {
  background: var(--accent);
  color: var(--surface);
  font-family: var(--font-body);
  font-weight: 600;
}

.meta-pill--outline {
  background: var(--bg-panel);
  border: 1px solid var(--border);
  color: var(--text-muted);
}

.article-hero .post-tag {
  min-height: 1.75rem;
  padding: 0.2rem 0.7rem;
}

.article-hero .post-meta time {
  display: inline-flex;
  align-items: center;
  box-sizing: border-box;
  padding: 0.2rem 0.7rem;
  border: 1px solid var(--border);
  border-radius: var(--radius-pill);
  background: var(--bg-panel);
  color: var(--text-muted);
  font-family: var(--font-mono);
  font-size: 0.76rem;
  line-height: 1.2;
  white-space: nowrap;
}

.article-title {
  margin: 0.2rem 0 0.8rem;
  font-family: var(--font-display);
  font-size: clamp(1.8rem, 4.2vw, 2.6rem);
  font-weight: 800;
  line-height: 1.2;
  letter-spacing: -0.02em;
  color: var(--text);
  text-wrap: pretty;
}

.article-summary {
  max-width: 46rem;
  margin: 0;
  color: var(--text-muted);
  font-size: 1.02rem;
  line-height: 1.8;
}

.article-body {
  box-sizing: border-box;
  counter-reset: section;
  padding-inline: var(--blog-reading-pad);
  color: var(--text);
  font-size: 1rem;
  line-height: 1.8;
  overflow-wrap: break-word;
  word-break: normal;
}

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

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

.article-body p {
  margin: 0 0 1.1rem;
}

.article-body h2 {
  counter-increment: section;
  margin: 2.4rem 0 1rem;
  padding-bottom: 0.55rem;
  border-bottom: 1px solid var(--border-soft);
  font-family: var(--font-display);
  font-size: clamp(1.25rem, 2.4vw, 1.6rem);
  font-weight: 700;
  line-height: 1.35;
  letter-spacing: -0.02em;
  color: var(--text);
  text-wrap: pretty;
}

.article-body h2::before {
  content: counter(section, decimal-leading-zero);
  display: inline-block;
  margin-right: 0.55rem;
  padding: 0.05rem 0.42rem;
  border-radius: var(--radius-sm);
  background: color-mix(in srgb, var(--accent) 12%, var(--surface));
  color: var(--accent-dark);
  font-family: var(--font-mono);
  font-size: 0.68em;
  font-weight: 700;
  vertical-align: 0.12em;
}

.article-body h3 {
  margin: 1.8rem 0 0.7rem;
  font-family: var(--font-display);
  font-size: clamp(1.1rem, 2vw, 1.3rem);
  font-weight: 700;
  line-height: 1.4;
  letter-spacing: -0.02em;
  color: var(--text);
  text-wrap: pretty;
}

.article-body h3::before {
  content: "";
  display: inline-block;
  width: 0.45rem;
  height: 0.45rem;
  margin-right: 0.5rem;
  border-radius: var(--radius-pill);
  background: linear-gradient(135deg, var(--accent), var(--violet));
  vertical-align: 0.08em;
}

.article-body h4 {
  margin: 1.4rem 0 0.5rem;
  font-family: var(--font-display);
  font-size: 1.05rem;
  font-weight: 700;
  line-height: 1.5;
  letter-spacing: -0.02em;
  color: var(--text);
  text-wrap: pretty;
}

.article-body ul,
.article-body ol {
  margin: 0 0 1.2rem;
  padding-left: 1.4rem;
}

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

.article-body li > ul,
.article-body li > ol {
  margin-top: 0.35rem;
  margin-bottom: 0;
}

.article-body a {
  color: var(--accent-dark);
  text-decoration: underline;
  text-underline-offset: 0.18em;
  text-decoration-thickness: 1px;
  overflow-wrap: break-word;
}

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

.article-body strong {
  color: var(--text);
  font-weight: 700;
}

.article-body blockquote {
  margin: 1.6rem 0;
  padding: 1rem 1.2rem;
  border-left: 4px solid var(--violet);
  border-radius: var(--radius-sm);
  background: var(--bg-panel);
  background: color-mix(in srgb, var(--violet) 8%, var(--surface));
  color: var(--text);
}

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

.article-body hr {
  margin: 2rem 0;
  border: 0;
  border-top: 1px solid var(--border);
}

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

.article-body figure {
  margin: 1.6rem 0;
}

.article-body figcaption {
  margin-top: 0.5rem;
  color: var(--text-muted);
  font-size: 0.82rem;
  line-height: 1.6;
}

.article-body dl {
  margin: 0 0 1.2rem;
}

.article-body dt {
  color: var(--text);
  font-weight: 700;
}

.article-body dd {
  margin: 0.2rem 0 0.8rem 1rem;
  color: var(--text-muted);
}

.article-body code {
  padding: 0.12em 0.35em;
  border-radius: var(--radius-sm);
  background: var(--bg-panel-2);
  color: var(--accent-dark);
  font-family: var(--font-mono);
  font-size: 0.9em;
  overflow-wrap: anywhere;
}

.article-body pre {
  position: relative;
  margin: 1.6rem 0;
  padding: 2.6rem 1.1rem 1.1rem;
  overflow-x: auto;
  overscroll-behavior-x: contain;
  -webkit-overflow-scrolling: touch;
  background: var(--text);
  color: var(--bg-panel);
  border: 1px solid var(--border);
  border-color: color-mix(in srgb, var(--accent) 22%, var(--border));
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-card);
  tab-size: 2;
}

.article-body pre::before {
  content: "";
  position: absolute;
  top: 0.9rem;
  left: 1rem;
  width: 0.55rem;
  height: 0.55rem;
  border-radius: var(--radius-pill);
  background: var(--error);
  box-shadow: 1rem 0 0 var(--warn), 2rem 0 0 var(--success);
}

.article-body pre code {
  display: block;
  padding: 0;
  border-radius: 0;
  background: transparent;
  color: inherit;
  font-size: 0.88rem;
  line-height: 1.7;
  overflow-wrap: normal;
}

.article-body table {
  width: 100%;
  margin: 1.4rem 0;
  border-collapse: collapse;
  font-size: 0.94rem;
  line-height: 1.65;
  font-variant-numeric: tabular-nums;
}

.article-body caption {
  caption-side: top;
  padding: 0 0 0.6rem;
  color: var(--text-muted);
  font-size: 0.82rem;
  text-align: left;
}

.article-body th,
.article-body td {
  padding: 0.7rem 0.8rem;
  border-bottom: 1px solid var(--border-soft);
  text-align: left;
  vertical-align: top;
  word-break: keep-all;
}

.article-body thead th {
  background: var(--accent);
  color: var(--surface);
  font-weight: 600;
  border-bottom-color: var(--accent);
  border-bottom-color: color-mix(in srgb, var(--accent) 60%, var(--border));
  white-space: nowrap;
}

.article-body tbody tr:nth-child(even) {
  background: var(--bg-panel);
  background: color-mix(in srgb, var(--accent) 4%, var(--surface));
}

.article-body tbody tr:hover {
  background: var(--accent-a06);
}

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

.table-scroll {
  margin: 1.4rem 0;
  overflow-x: auto;
  overscroll-behavior-x: contain;
  -webkit-overflow-scrolling: touch;
  border-radius: var(--radius-sm);
}

.table-scroll table {
  margin: 0;
}

.callout {
  position: relative;
  box-sizing: border-box;
  margin: 1.6rem 0;
  padding: 1rem 1.1rem 1rem 3rem;
  border-left: 4px solid var(--accent);
  border-radius: var(--radius-sm);
  background: var(--bg-panel);
  background: color-mix(in srgb, var(--accent) 7%, var(--surface));
}

.callout::before {
  content: "i";
  position: absolute;
  top: 1rem;
  left: 1rem;
  display: grid;
  place-items: center;
  width: 1.3rem;
  height: 1.3rem;
  border-radius: var(--radius-pill);
  background: var(--accent);
  color: var(--surface);
  font-family: var(--font-mono);
  font-size: 0.78rem;
  font-weight: 700;
  line-height: 1;
}

.callout p {
  margin: 0;
}

.callout p + p {
  margin-top: 0.6rem;
}

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

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

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

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

.stat-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(min(100%, 12rem), 1fr));
  gap: 0.9rem;
  margin: 1.6rem 0;
}

.stat-card {
  box-sizing: border-box;
  min-width: 0;
  padding: 1rem 1.1rem;
  background: var(--surface);
  border: 1px solid var(--border);
  border-top: 3px solid var(--accent);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-card);
}

.stat-card:nth-child(2n) {
  border-top-color: var(--violet);
  background: var(--bg-panel);
  background: color-mix(in srgb, var(--violet) 5%, var(--surface));
}

.stat-card:nth-child(3n) {
  border-top-color: var(--warn);
  background: var(--bg-panel);
  background: color-mix(in srgb, var(--warn) 6%, var(--surface));
}

.stat-num {
  display: block;
  color: var(--accent-dark);
  font-family: var(--font-mono);
  font-size: clamp(1.4rem, 2.6vw, 1.9rem);
  font-weight: 700;
  line-height: 1.2;
  font-variant-numeric: tabular-nums;
}

.stat-label {
  display: block;
  margin-top: 0.25rem;
  color: var(--text-muted);
  font-size: 0.84rem;
  line-height: 1.6;
}

.check-list {
  display: grid;
  gap: 0.6rem;
  margin: 1.4rem 0;
  padding: 0;
  list-style: none;
}

.check-list li {
  box-sizing: border-box;
  margin: 0;
  padding: 0.75rem 0.9rem;
  background: var(--bg-panel);
  border: 1px solid var(--border-soft);
  border-radius: var(--radius-sm);
  line-height: 1.75;
}

.check-list li:nth-child(even) {
  background: var(--bg-panel);
  background: color-mix(in srgb, var(--bg-panel-2) 45%, var(--surface));
}

.verdict {
  box-sizing: border-box;
  margin: 1.6rem 0;
  padding: 1rem 1.1rem;
  border-left: 4px solid var(--accent);
  border-radius: var(--radius-sm);
  background: var(--bg-panel);
  background: color-mix(in srgb, var(--accent) 7%, var(--surface));
  line-height: 1.8;
}

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

.verdict p:last-child {
  margin-bottom: 0;
}

.promo-block {
  position: relative;
  box-sizing: border-box;
  overflow: hidden;
  margin-top: 2.5rem;
  padding: 2rem;
  border-radius: var(--radius-xl);
  background: linear-gradient(135deg, var(--accent), var(--accent-dark) 55%, var(--violet));
  color: var(--surface);
  box-shadow: var(--shadow-soft);
}

.promo-block::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(var(--white-a35) 1px, transparent 1px),
    linear-gradient(90deg, var(--white-a35) 1px, transparent 1px);
  background-size: 22px 22px;
  opacity: 0.16;
  pointer-events: none;
}

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

.promo-brand {
  margin: 0;
  color: var(--white-a80);
  font-family: var(--font-mono);
  font-size: 0.82rem;
  letter-spacing: 0.08em;
}

.promo-text {
  max-width: 36rem;
  margin: 0.5rem 0 0;
  font-size: 1.02rem;
  line-height: 1.8;
}

.promo-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.7rem;
  margin-top: 1.2rem;
}

.promo-block .btn-primary {
  background: var(--surface);
  border-color: var(--surface);
  color: var(--accent-dark);
  box-shadow: none;
}

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

.promo-block .btn-ghost {
  background: transparent;
  border-color: var(--white-a70);
  color: var(--surface);
}

.promo-block .btn-ghost:hover {
  background: var(--white-a35);
  background: color-mix(in srgb, var(--surface) 16%, transparent);
  border-color: var(--surface);
  color: var(--surface);
}

#related-posts,
#post-nav {
  padding-inline: var(--blog-reading-pad);
}

#related-posts {
  padding-top: 2rem;
  padding-bottom: 0;
}

#related-posts:empty {
  padding: 0;
}

.related-title {
  margin: 0 0 1rem;
  font-family: var(--font-display);
  font-size: clamp(1.25rem, 2.4vw, 1.5rem);
  font-weight: 700;
  line-height: 1.35;
  letter-spacing: -0.02em;
  color: var(--text);
  text-wrap: pretty;
}

.related-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(min(100%, 14rem), 1fr));
  gap: 0.9rem;
}

.related-card {
  position: relative;
  display: block;
  box-sizing: border-box;
  min-width: 0;
  height: 100%;
  padding: 1.1rem 1.2rem;
  overflow: hidden;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-card);
  color: inherit;
  text-decoration: none;
  transition: transform 0.2s ease, border-color 0.2s ease, box-shadow 0.2s ease;
}

.related-card::before {
  content: "";
  position: absolute;
  inset: 0 0 auto;
  height: 3px;
  background: linear-gradient(90deg, var(--accent), var(--violet));
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.2s ease;
}

.related-card:hover {
  transform: translateY(-2px);
  border-color: var(--accent-a35);
  box-shadow: var(--shadow-soft);
}

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

.related-card:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 3px;
}

.related-meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.4rem 0.6rem;
}

.related-tag {
  display: inline-flex;
  align-items: center;
  box-sizing: border-box;
  padding: 0.12rem 0.55rem;
  border-radius: var(--radius-pill);
  background: var(--bg-panel-2);
  background: color-mix(in srgb, var(--accent) 12%, var(--surface));
  color: var(--accent-dark);
  font-size: 0.72rem;
  font-weight: 600;
  line-height: 1.4;
}

.related-date {
  color: var(--text-muted);
  font-family: var(--font-mono);
  font-size: 0.72rem;
}

.related-card-title {
  margin: 0.55rem 0 0.35rem;
  font-family: var(--font-display);
  font-size: 1rem;
  font-weight: 700;
  line-height: 1.45;
  letter-spacing: -0.02em;
  color: var(--text);
  text-wrap: pretty;
}

.related-card-summary {
  margin: 0;
  color: var(--text-muted);
  font-size: 0.86rem;
  line-height: 1.65;
}

#post-nav {
  padding-top: 1.5rem;
  padding-bottom: 2rem;
}

#post-nav:empty {
  padding: 0;
}

.post-nav-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(min(100%, 16rem), 1fr));
  gap: 0.9rem;
}

.post-nav-card {
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
  box-sizing: border-box;
  min-width: 0;
  height: 100%;
  padding: 1rem 1.1rem;
  background: var(--bg-panel);
  border: 1px solid var(--border);
  border-top: 3px solid var(--border-soft);
  border-radius: var(--radius-md);
  color: inherit;
  text-decoration: none;
  transition: border-color 0.2s ease, transform 0.2s ease, background 0.2s ease;
}

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

.post-nav-card:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 3px;
}

.post-nav-label {
  color: var(--text-muted);
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.04em;
}

.post-nav-title {
  color: var(--text);
  font-family: var(--font-display);
  font-size: 0.98rem;
  font-weight: 700;
  line-height: 1.5;
  letter-spacing: -0.02em;
  text-wrap: pretty;
}

.post-nav-card:hover .post-nav-title {
  color: var(--accent-dark);
}

.post-nav-card--next {
  text-align: right;
}

@media (max-width: 860px) {
  .article-body table {
    display: block;
    width: fit-content;
    max-width: 100%;
    overflow-x: auto;
    overscroll-behavior-x: contain;
    -webkit-overflow-scrolling: touch;
  }
}

@media (max-width: 640px) {
  :root {
    --blog-reading-pad: 1.5rem;
  }

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

  .reading-wrap {
    padding-inline: 0;
  }

  .blog-hero {
    padding-top: 2rem;
    padding-bottom: 1.4rem;
  }

  .blog-hero-title {
    font-size: clamp(1.8rem, 8vw, 2.4rem);
  }

  .blog-hero-lede {
    font-size: 0.96rem;
  }

  .filter-btn {
    padding: 0.5rem 0.85rem;
    font-size: 0.86rem;
  }

  .blog-list-section {
    padding-top: 1.2rem;
    padding-bottom: 3rem;
  }

  .post-card {
    padding: 1.2rem 1.25rem;
  }

  .article-hero {
    margin-top: 1rem;
    padding-block: 1.5rem;
  }

  .article-hero::before {
    left: 0.5rem;
    width: 5px;
  }

  .article-title {
    font-size: clamp(1.65rem, 8vw, 2.1rem);
  }

  .article-summary {
    font-size: 0.98rem;
  }

  .article-body h2 {
    margin-top: 2rem;
  }

  .callout {
    padding-left: 2.8rem;
  }

  .promo-block {
    padding: 1.5rem;
    border-radius: var(--radius-lg);
  }

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

  .post-nav-card--next {
    text-align: left;
  }
}

@media (max-width: 480px) {
  .article-meta,
  .article-hero .post-meta {
    gap: 0.4rem;
  }

  .meta-pill,
  .article-hero .post-meta time {
    font-size: 0.72rem;
    padding: 0.18rem 0.55rem;
  }
}

@media (prefers-reduced-motion: reduce) {
  .filter-btn,
  .post-card,
  .related-card,
  .post-nav-card,
  .promo-block .btn {
    transition: none;
  }

  .post-card::before,
  .related-card::before {
    transition: none;
  }

  .post-card:hover,
  .related-card:hover,
  .post-nav-card:hover {
    transform: none;
  }
}