:root {
  --color-canvas: #FFFFFF;
  --color-panel: #F8FAFA;
  --color-panel-strong: #F1F4F5;
  --color-line: #E3E8EA;
  --color-accent: #00A88E;
  --color-accent-deep: #0B7C97;
  --color-accent-blue: #1287C9;
  --color-accent-soft: color-mix(in srgb, var(--color-accent) 10%, var(--color-canvas));
  --color-ink: #111518;
  --color-muted: #5C6670;
  --color-success: #4CAE4F;
  --color-warning: #F2B01E;
  --color-danger: #EE6A4D;
  --color-on-accent: var(--color-canvas);
  --color-code-bg: color-mix(in srgb, var(--color-ink) 96%, var(--color-accent-deep));
  --color-code-text: color-mix(in srgb, var(--color-canvas) 88%, var(--color-accent));
  --font-display: 'Inter', 'Noto Sans SC', -apple-system, 'PingFang SC', 'Microsoft YaHei', sans-serif;
  --font-body: 'Inter', 'Noto Sans SC', -apple-system, 'PingFang SC', 'Microsoft YaHei', sans-serif;
  --font-mono: 'JetBrains Mono', 'SFMono-Regular', Consolas, 'Liberation Mono', monospace;
  --radius-xs: 0.4rem;
  --radius-sm: 0.75rem;
  --radius-card: 1.15rem;
  --radius-panel: 1.6rem;
  --radius-pill: 999rem;
  --shadow-card: 0 0.8rem 2.4rem color-mix(in srgb, var(--color-ink) 7%, transparent);
  --shadow-raised: 0 1.2rem 3.4rem color-mix(in srgb, var(--color-ink) 11%, transparent);
  --shadow-button: 0 0.55rem 1.2rem color-mix(in srgb, var(--color-accent) 22%, transparent);
  --blog-reading: 56rem;
  --blog-wide: 72rem;
  --blog-gutter: clamp(1.5rem, 4vw, 2.5rem);
  --space-2xs: 0.35rem;
  --space-xs: 0.6rem;
  --space-sm: 0.9rem;
  --space-md: 1.25rem;
  --space-lg: 1.75rem;
  --space-xl: 2.5rem;
  --space-2xl: 3.5rem;
  --space-3xl: 5rem;
  --line-body: 1.85;
  --transition-fast: 180ms ease;
  --transition-base: 260ms ease;
}

.blog-reading,
.blog-article,
.article-body,
.article-breadcrumb,
.article-hero-inner,
.promo-block,
#related-posts,
#post-nav {
  width: min(100% - (var(--blog-gutter) * 2), var(--blog-reading));
  margin-inline: auto;
}

.blog-list-hero {
  position: relative;
  overflow: hidden;
  padding-block: clamp(var(--space-2xl), 8vw, var(--space-3xl));
  border-block: 1px solid var(--color-line);
  background:
    linear-gradient(var(--color-line) 1px, transparent 1px),
    linear-gradient(90deg, var(--color-line) 1px, transparent 1px),
    var(--color-accent-soft);
  background-size: 2.5rem 2.5rem;
}

.blog-list-hero::after {
  position: absolute;
  right: clamp(var(--space-md), 7vw, var(--space-3xl));
  bottom: var(--space-lg);
  width: clamp(5rem, 11vw, 8rem);
  height: 0.2rem;
  border-radius: var(--radius-pill);
  background: linear-gradient(90deg, var(--color-accent), var(--color-success), var(--color-warning));
  content: "";
}

.blog-list-hero .blog-reading {
  position: relative;
  z-index: 1;
  padding-inline: var(--space-md);
}

.blog-kicker,
.section-code,
.related-heading > span {
  display: inline-block;
  color: var(--color-accent-deep);
  font-family: var(--font-mono);
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.08em;
}

.blog-list-hero h1 {
  max-width: 16ch;
  margin: var(--space-sm) 0 var(--space-md);
  color: var(--color-ink);
  font-family: var(--font-display);
  font-size: clamp(2.15rem, 6vw, 3rem);
  line-height: 1.12;
  letter-spacing: -0.02em;
  text-wrap: pretty;
}

.blog-list-hero p {
  max-width: 45rem;
  margin: 0;
  color: var(--color-muted);
  font-size: 1.05rem;
  line-height: 1.8;
}

.blog-index-section {
  padding-block: clamp(var(--space-2xl), 7vw, var(--space-3xl));
}

.blog-index-heading {
  display: flex;
  align-items: end;
  justify-content: space-between;
  gap: var(--space-lg);
  margin-bottom: var(--space-xl);
}

.blog-index-heading h2 {
  margin: var(--space-xs) 0 0;
  color: var(--color-ink);
  font-family: var(--font-display);
  font-size: clamp(1.7rem, 4vw, 2.2rem);
  letter-spacing: -0.015em;
}

.blog-index-heading p {
  max-width: 25rem;
  margin: 0;
  color: var(--color-muted);
  line-height: 1.7;
}

.blog-filter {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-xs);
  margin-bottom: var(--space-xl);
}

.blog-filter button {
  appearance: none;
  padding: 0.65rem 1rem;
  border: 1px solid var(--color-line);
  border-radius: var(--radius-pill);
  background: var(--color-canvas);
  color: var(--color-muted);
  font: 600 0.9rem/1 var(--font-body);
  cursor: pointer;
  transition:
    border-color var(--transition-fast),
    background-color var(--transition-fast),
    color var(--transition-fast),
    transform var(--transition-fast);
}

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

.blog-filter button:focus-visible {
  outline: 0.2rem solid color-mix(in srgb, var(--color-accent) 35%, transparent);
  outline-offset: 0.15rem;
}

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

.article-list {
  display: grid;
  gap: var(--space-md);
}

.article-card {
  position: relative;
  overflow: hidden;
  padding: clamp(var(--space-lg), 4vw, var(--space-xl));
  border: 1px solid var(--color-line);
  border-radius: var(--radius-card);
  background: var(--color-canvas);
  box-shadow: var(--shadow-card);
  transition:
    border-color var(--transition-base),
    box-shadow var(--transition-base),
    transform var(--transition-base);
}

.article-card::before,
.related-card::before,
.post-nav-card::before {
  position: absolute;
  inset: 0 0 auto;
  height: 0.2rem;
  background: linear-gradient(90deg, var(--color-accent), var(--color-accent-blue));
  content: "";
  opacity: 0;
  transition: opacity var(--transition-fast);
}

.article-card:hover {
  border-color: color-mix(in srgb, var(--color-accent) 50%, var(--color-line));
  box-shadow: var(--shadow-raised);
  transform: translateY(-0.2rem);
}

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

.article-card-meta {
  display: flex;
  align-items: center;
  gap: var(--space-xs);
  margin-bottom: var(--space-sm);
  color: var(--color-muted);
  font-family: var(--font-mono);
  font-size: 0.78rem;
}

.article-tag {
  color: var(--color-accent-deep);
  font-family: var(--font-body);
  font-weight: 700;
}

.meta-separator {
  color: var(--color-warning);
}

.article-card h3 {
  max-width: 42rem;
  margin: 0;
  font-family: var(--font-display);
  font-size: clamp(1.2rem, 3vw, 1.55rem);
  line-height: 1.45;
  letter-spacing: -0.015em;
  text-wrap: pretty;
}

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

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

.article-card p {
  max-width: 48rem;
  margin: var(--space-sm) 0 var(--space-md);
  color: var(--color-muted);
  font-size: 1rem;
  line-height: 1.8;
}

.article-read-link {
  display: inline-flex;
  align-items: center;
  gap: var(--space-xs);
  color: var(--color-accent-deep);
  font-weight: 750;
  text-decoration: none;
}

.article-read-link span {
  transition: transform var(--transition-fast);
}

.article-read-link:hover span {
  transform: translateX(0.2rem);
}

.blog-empty,
.blog-noscript {
  padding: var(--space-lg);
  border: 1px dashed var(--color-line);
  border-radius: var(--radius-card);
  background: var(--color-panel);
  color: var(--color-muted);
  text-align: center;
}

.blog-index-promo {
  margin-bottom: clamp(var(--space-2xl), 7vw, var(--space-3xl));
}

.article-breadcrumb {
  margin-top: var(--space-lg);
  padding-top: var(--space-2xs);
  color: var(--color-muted);
  font-size: 0.88rem;
  line-height: 1.6;
}

.article-breadcrumb ol {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-xs);
  margin: 0;
  padding: 0;
  list-style: none;
}

.article-breadcrumb li:not(:last-child)::after {
  margin-left: var(--space-xs);
  color: var(--color-line);
  content: "/";
}

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

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

.article-hero {
  position: relative;
  left: 50%;
  width: 100vw;
  margin-top: var(--space-lg);
  margin-left: -50vw;
  overflow: hidden;
  border-block: 1px solid var(--color-line);
  background:
    radial-gradient(circle at 1px 1px, color-mix(in srgb, var(--color-accent) 16%, transparent) 1px, transparent 1px),
    var(--color-accent-soft);
  background-size: 1.4rem 1.4rem;
}

.article-hero::after {
  position: absolute;
  right: var(--blog-gutter);
  bottom: var(--space-lg);
  width: clamp(4rem, 9vw, 7rem);
  height: 0.18rem;
  border-radius: var(--radius-pill);
  background: linear-gradient(90deg, var(--color-success), var(--color-warning), var(--color-danger));
  content: "";
}

.article-hero-inner {
  position: relative;
  z-index: 1;
  padding: clamp(var(--space-xl), 6vw, var(--space-2xl)) var(--blog-gutter);
}

.article-hero-meta {
  display: flex;
  align-items: center;
  justify-content: flex-start;
  gap: var(--space-xs);
  margin-bottom: var(--space-md);
  color: var(--color-muted);
  font-family: var(--font-mono);
  font-size: 0.78rem;
  line-height: 1.5;
}

.article-hero-meta > * {
  border: 0;
  border-radius: 0;
  background: transparent;
}

.article-hero-meta > *:not(:last-child)::after {
  margin-left: var(--space-xs);
  color: var(--color-accent);
  content: "·";
}

.article-hero-meta .article-category {
  color: var(--color-accent-deep);
  font-family: var(--font-body);
  font-weight: 750;
}

.article-hero h1 {
  max-width: 54rem;
  margin: 0;
  color: var(--color-ink);
  font-family: var(--font-display);
  font-size: clamp(2rem, 5vw, 2.6rem);
  line-height: 1.24;
  letter-spacing: -0.02em;
  text-wrap: pretty;
}

.article-hero-summary {
  max-width: 50rem;
  margin: var(--space-md) 0 0;
  color: var(--color-muted);
  font-size: 1.05rem;
  line-height: 1.8;
}

.article-body {
  padding-block: var(--space-xl) var(--space-2xl);
  color: var(--color-ink);
  font-size: 1rem;
  line-height: var(--line-body);
  counter-reset: article-section;
}

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

.article-body p,
.article-body li {
  font-size: 1rem;
  line-height: var(--line-body);
}

.article-body p {
  margin: 0 0 var(--space-md);
}

.article-body h2 {
  position: relative;
  margin: var(--space-2xl) 0 var(--space-md);
  padding-left: 2.8rem;
  color: var(--color-ink);
  font-family: var(--font-display);
  font-size: clamp(1.35rem, 3vw, 1.6rem);
  line-height: 1.4;
  letter-spacing: -0.015em;
  text-wrap: pretty;
  counter-increment: article-section;
}

.article-body h2::before {
  position: absolute;
  top: 0.05rem;
  left: 0;
  display: grid;
  width: 2rem;
  height: 2rem;
  place-items: center;
  border-radius: var(--radius-xs);
  background: var(--color-accent);
  color: var(--color-on-accent);
  content: counter(article-section, decimal-leading-zero);
  font: 700 0.72rem/1 var(--font-mono);
}

.article-body h2::after {
  position: absolute;
  bottom: -0.55rem;
  left: 2.8rem;
  width: 3.5rem;
  height: 0.16rem;
  border-radius: var(--radius-pill);
  background: linear-gradient(90deg, var(--color-accent), var(--color-warning));
  content: "";
}

.article-body h3 {
  margin: var(--space-xl) 0 var(--space-sm);
  color: var(--color-ink);
  font-family: var(--font-display);
  font-size: clamp(1.12rem, 2.4vw, 1.3rem);
  line-height: 1.45;
  letter-spacing: -0.01em;
  text-wrap: pretty;
}

.article-body a {
  color: var(--color-accent-deep);
  text-decoration-thickness: 0.08rem;
  text-underline-offset: 0.2rem;
}

.article-body ul,
.article-body ol {
  margin: 0 0 var(--space-lg);
  padding-left: 1.4rem;
}

.article-body li + li {
  margin-top: var(--space-xs);
}

.article-body blockquote {
  margin: var(--space-lg) 0;
  padding: var(--space-md) var(--space-lg);
  border-left: 0.25rem solid var(--color-accent);
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  background: var(--color-accent-soft);
  color: var(--color-ink);
}

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

.table-scroll {
  margin: var(--space-lg) 0;
  overflow-x: auto;
  border: 1px solid var(--color-line);
  border-radius: var(--radius-sm);
  background: var(--color-canvas);
}

.article-body table {
  width: 100%;
  min-width: 42rem;
  border-collapse: collapse;
}

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

.article-body th {
  background: var(--color-accent-deep);
  color: var(--color-on-accent);
  font-size: 0.88rem;
  font-weight: 750;
}

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

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

.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: var(--space-lg) 0;
  overflow-x: auto;
  padding: 2.8rem var(--space-lg) var(--space-lg);
  border: 1px solid color-mix(in srgb, var(--color-ink) 75%, var(--color-line));
  border-radius: var(--radius-sm);
  background: var(--color-code-bg);
  color: var(--color-code-text);
  box-shadow: var(--shadow-card);
}

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

.article-body pre::after {
  position: absolute;
  top: 0.82rem;
  right: var(--space-lg);
  color: color-mix(in srgb, var(--color-code-text) 62%, transparent);
  content: "HBVPN / TERMINAL";
  font: 600 0.65rem/1 var(--font-mono);
  letter-spacing: 0.07em;
}

.article-body code {
  font-family: var(--font-mono);
  font-size: 0.9em;
}

.article-body :not(pre) > code {
  padding: 0.15rem 0.4rem;
  border-radius: var(--radius-xs);
  background: var(--color-panel-strong);
  color: var(--color-accent-deep);
}

.callout {
  position: relative;
  margin: var(--space-lg) 0;
  padding: var(--space-md) var(--space-lg) var(--space-md) 3.8rem;
  border: 1px solid color-mix(in srgb, var(--color-accent) 28%, var(--color-line));
  border-left: 0.28rem solid var(--color-accent);
  border-radius: var(--radius-sm);
  background: var(--color-accent-soft);
  color: var(--color-ink);
}

.callout::before {
  position: absolute;
  top: var(--space-md);
  left: var(--space-md);
  display: grid;
  width: 1.8rem;
  height: 1.8rem;
  place-items: center;
  border-radius: var(--radius-pill);
  background: var(--color-accent);
  color: var(--color-on-accent);
  content: "i";
  font: 800 0.85rem/1 var(--font-mono);
}

.callout.warning {
  border-color: color-mix(in srgb, var(--color-warning) 48%, var(--color-line));
  border-left-color: var(--color-warning);
  background: color-mix(in srgb, var(--color-warning) 12%, var(--color-canvas));
}

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

.callout.success {
  border-color: color-mix(in srgb, var(--color-success) 42%, var(--color-line));
  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%, 11rem), 1fr));
  gap: var(--space-sm);
  margin: var(--space-lg) 0;
}

.stat-card {
  position: relative;
  overflow: hidden;
  padding: var(--space-lg);
  border: 1px solid var(--color-line);
  border-radius: var(--radius-card);
  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(2n) {
  background: var(--color-accent-soft);
}

.stat-card:nth-child(2n)::before {
  background: var(--color-accent-blue);
}

.stat-card:nth-child(3n) {
  background: color-mix(in srgb, var(--color-warning) 9%, var(--color-canvas));
}

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

.stat-num {
  display: block;
  color: var(--color-ink);
  font-family: var(--font-mono);
  font-size: clamp(1.35rem, 4vw, 1.85rem);
  font-weight: 800;
  line-height: 1.2;
}

.stat-label {
  display: block;
  margin-top: var(--space-xs);
  color: var(--color-muted);
  font-size: 0.9rem;
  line-height: 1.6;
}

.check-list {
  display: grid;
  gap: var(--space-xs);
  margin: var(--space-lg) 0;
  padding: 0;
  list-style: none;
}

.check-list li {
  padding: var(--space-sm) var(--space-md);
  border: 1px solid var(--color-line);
  border-radius: var(--radius-sm);
  background: var(--color-panel);
}

.verdict {
  margin: var(--space-lg) 0;
  padding: var(--space-md) var(--space-lg);
  border: 1px solid color-mix(in srgb, var(--color-accent) 30%, var(--color-line));
  border-left: 0.3rem 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));
  color: var(--color-ink);
}

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

.promo-block {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-xl);
  overflow: hidden;
  padding: clamp(var(--space-xl), 6vw, var(--space-2xl));
  border: 1px solid color-mix(in srgb, var(--color-accent) 58%, var(--color-line));
  border-radius: var(--radius-panel);
  background:
    linear-gradient(120deg, var(--color-accent-deep), var(--color-accent-blue));
  color: var(--color-on-accent);
  box-shadow: var(--shadow-raised);
}

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

.promo-block::before {
  top: var(--space-md);
  right: var(--space-xl);
  width: 8rem;
  height: 3rem;
}

.promo-block::after {
  right: 8rem;
  bottom: var(--space-md);
  width: 4rem;
  height: 4rem;
}

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

.promo-brand {
  display: inline-block;
  margin-bottom: var(--space-xs);
  color: color-mix(in srgb, var(--color-on-accent) 82%, var(--color-warning));
  font-family: var(--font-mono);
  font-size: 0.76rem;
  font-weight: 750;
  letter-spacing: 0.1em;
}

.promo-block h2 {
  margin: 0 0 var(--space-xs);
  color: var(--color-on-accent);
  font-size: clamp(1.45rem, 4vw, 2rem);
  line-height: 1.3;
  letter-spacing: -0.015em;
  text-wrap: pretty;
}

.promo-block p {
  margin: 0;
  color: color-mix(in srgb, var(--color-on-accent) 88%, transparent);
  line-height: 1.75;
}

.promo-block .btn-primary {
  flex: 0 0 auto;
  border-color: var(--color-canvas);
  background: var(--color-canvas);
  color: var(--color-accent-deep);
  box-shadow: var(--shadow-button);
}

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

#related-posts {
  padding-top: var(--space-xl);
}

.related-heading {
  margin-bottom: var(--space-md);
}

.related-heading h2 {
  margin: var(--space-xs) 0 0;
  color: var(--color-ink);
  font-family: var(--font-display);
  font-size: 1.55rem;
  letter-spacing: -0.015em;
  text-wrap: pretty;
}

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

.related-card {
  position: relative;
  overflow: hidden;
  padding: var(--space-lg);
  border: 1px solid var(--color-line);
  border-radius: var(--radius-card);
  background: var(--color-canvas);
  transition:
    border-color var(--transition-base),
    box-shadow var(--transition-base),
    transform var(--transition-base);
}

.related-card:hover {
  border-color: var(--color-accent);
  box-shadow: var(--shadow-card);
  transform: translateY(-0.2rem);
}

.related-card-meta {
  display: flex;
  justify-content: space-between;
  gap: var(--space-xs);
  margin-bottom: var(--space-sm);
  color: var(--color-muted);
  font-family: var(--font-mono);
  font-size: 0.7rem;
}

.related-card-meta span {
  color: var(--color-accent-deep);
  font-family: var(--font-body);
  font-weight: 700;
}

.related-card h3 {
  margin: 0;
  font-size: 1.05rem;
  line-height: 1.5;
  letter-spacing: -0.01em;
  text-wrap: pretty;
}

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

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

.related-card p {
  display: -webkit-box;
  margin: var(--space-sm) 0 0;
  overflow: hidden;
  color: var(--color-muted);
  font-size: 0.9rem;
  line-height: 1.7;
  -webkit-box-orient: vertical;
  -webkit-line-clamp: 3;
}

#post-nav {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: var(--space-sm);
  padding-block: var(--space-lg) var(--space-xl);
}

.post-nav-card {
  position: relative;
  overflow: hidden;
  padding: var(--space-lg);
  border: 1px solid var(--color-line);
  border-radius: var(--radius-card);
  background: var(--color-panel);
  color: var(--color-ink);
  text-decoration: none;
  transition:
    border-color var(--transition-base),
    background-color var(--transition-base),
    transform var(--transition-base);
}

.post-nav-card:hover {
  border-color: var(--color-accent);
  background: var(--color-accent-soft);
  transform: translateY(-0.18rem);
}

.post-nav-label {
  display: block;
  margin-bottom: var(--space-xs);
  color: var(--color-accent-deep);
  font-family: var(--font-mono);
  font-size: 0.72rem;
  font-weight: 750;
}

.post-nav-card strong {
  display: block;
  font-size: 0.98rem;
  line-height: 1.55;
  text-wrap: pretty;
}

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

.post-nav-next:only-child {
  grid-column: 2;
}

@media (max-width: 48rem) {
  .blog-index-heading,
  .promo-block {
    align-items: flex-start;
    flex-direction: column;
  }

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

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

  .article-hero-meta {
    flex-wrap: wrap;
  }

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

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

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

@media (max-width: 34rem) {
  .article-card,
  .related-card,
  .post-nav-card {
    padding: var(--space-md);
  }

  .article-body h2 {
    padding-left: 2.5rem;
  }

  .article-body h2::after {
    left: 2.5rem;
  }

  .callout {
    padding: 3.5rem var(--space-md) var(--space-md);
  }

  .callout::before {
    left: var(--space-md);
  }

  .promo-block .btn {
    width: 100%;
    justify-content: center;
  }
}

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

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

/* 2026-08-20 小学生走查:移动端宽表(30 站几乎全中:统一 608~720px 模板宽表在手机上第三列被切,
   VPNCK 一篇整页撑破)。表格自身转滚动容器:窄屏横滑、不裁列、不撑破版心 */
@media (max-width: 860px) {
  article table, .article-body table, .post-body table, .prose table, main table {
    display: block;
    width: fit-content;
    max-width: 100%;
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
    margin-inline: auto;
  }
}