:root {
  --blog-reading: 56rem;
  --blog-inset: 1.5rem;
  --blog-space: 1.5rem;
  --blog-size-copy: 1rem;
  --blog-size-small: 0.875rem;
  --blog-size-list-title: clamp(2rem, 4vw, 3rem);
  --blog-size-article-title: clamp(1.8rem, 3.8vw, 2.6rem);
  --blog-size-h2: clamp(1.3rem, 2.5vw, 1.6rem);
  --blog-size-h3: clamp(1.1rem, 2vw, 1.3rem);
  --blog-size-card-title: 1.2rem;
  --blog-size-stat: 1.8rem;
  --blog-leading: 1.9;
  --blog-title-leading: 1.4;
  --blog-tracking: -0.015em;
  --blog-dot-size: 12px;
  --blog-rule-width: 4px;
  --blog-focus-width: 3px;
  --blog-card-shift: -2px;
}

.blog-index,
.reading-wrap,
.article-hero,
.article-body,
.blog-post-grid > *,
.related-grid > *,
#post-nav > * {
  min-width: 0;
  box-sizing: border-box;
}

.blog-index {
  padding-bottom: 3rem;
}

.blog-skip {
  position: absolute;
  top: 0.75rem;
  left: var(--gutter);
  z-index: 100;
  padding: 0.75rem 1rem;
  color: var(--on-accent);
  background: var(--accent);
  border-radius: var(--radius-s);
  width: 1px;
  height: 1px;
  overflow: hidden;
  clip-path: inset(50%);
  white-space: nowrap;
  padding: 0;
}

.blog-skip:focus {
  width: auto;
  height: auto;
  overflow: visible;
  clip-path: none;
  white-space: normal;
  padding: 0.75rem 1rem;
}

.breadcrumbs {
  margin-top: 1.5rem;
  margin-bottom: 1.25rem;
  font-size: var(--blog-size-small);
  line-height: 1.8;
  color: var(--text-muted);
}

.breadcrumbs ol {
  display: flex;
  flex-wrap: wrap;
  gap: 0.35rem 0.6rem;
  padding: 0;
  margin: 0;
  list-style: none;
}

.breadcrumbs li {
  min-width: 0;
  overflow-wrap: anywhere;
}

.breadcrumbs li + li::before {
  content: "/";
  margin-right: 0.6rem;
  color: var(--text-muted);
}

.breadcrumbs a {
  color: var(--text-muted);
  text-underline-offset: 0.2em;
}

.blog-list-hero {
  padding: clamp(2rem, 5vw, 4rem) var(--blog-inset);
  text-align: center;
  background-color: var(--panel);
  background-image: radial-gradient(circle, var(--dot) 1px, transparent 1px),
    linear-gradient(var(--bg-hero-top), var(--bg-hero-bot));
  background-size: var(--blog-dot-size) var(--blog-dot-size), auto;
  border: 1px solid var(--border);
  border-radius: var(--radius-l);
  box-shadow: var(--shadow-panel);
}

.blog-kicker {
  margin: 0 0 0.75rem;
  color: var(--accent);
  font-family: var(--font-mono);
  font-size: var(--blog-size-small);
}

.blog-list-hero h1 {
  margin: 0;
  color: var(--text);
  font-size: var(--blog-size-list-title);
}

.blog-list-hero h1 .no-break {
  color: var(--accent);
}

.blog-list-hero > p:last-child {
  max-width: 42rem;
  margin: 1rem auto 0;
  color: var(--text-muted);
  font-size: var(--blog-size-copy);
  line-height: var(--blog-leading);
}

.blog-list-hero h1,
.article-hero h1,
.article-body h1,
.article-body h2,
.article-body h3,
.blog-library h2,
.blog-end-heading,
.article-card h3 {
  display: block;
  font-family: var(--font-display);
  font-weight: var(--weight-display);
  letter-spacing: var(--blog-tracking);
  text-wrap: pretty;
  overflow-wrap: anywhere;
  line-height: var(--blog-title-leading);
}

.blog-library {
  margin-top: 2.5rem;
}

.blog-library-head {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  justify-content: space-between;
  gap: 0.5rem 1rem;
}

.blog-library-head h2,
.blog-end-heading {
  margin: 0;
  font-size: var(--blog-size-h2);
  color: var(--text);
}

.blog-results-status {
  margin: 0;
  font-size: var(--blog-size-small);
  color: var(--text-muted);
}

.blog-filters {
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem;
  margin: 1.25rem 0 1.5rem;
}

.blog-filters button {
  padding: 0.65rem 1rem;
  border: 1px solid var(--border);
  border-radius: var(--radius-tag);
  background: var(--panel);
  color: var(--text-muted);
  font: inherit;
  font-size: var(--blog-size-small);
  cursor: pointer;
  transition: background-color var(--ease-time), border-color var(--ease-time);
}

.blog-filters button:hover {
  border-color: var(--accent);
  color: var(--accent);
}

.blog-filters button[aria-pressed="true"] {
  border-color: var(--accent);
  color: var(--on-accent);
  background: var(--accent);
}

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

.blog-article-card,
.related-card {
  display: flex;
  flex-direction: column;
  padding: var(--blog-inset);
  border: 1px solid var(--border);
  border-radius: var(--radius-m);
  background: var(--panel);
  color: var(--text);
  box-shadow: inset 0 1px 0 var(--hl-inner);
  transition: border-color var(--ease-time), transform var(--ease-time),
    box-shadow var(--ease-time);
}

.blog-article-card:hover,
.related-card:hover {
  border-color: var(--accent);
  transform: translateY(var(--blog-card-shift));
  box-shadow: var(--shadow-panel);
}

.article-meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: flex-start;
  gap: 0.5rem 0.75rem;
  color: var(--text-muted);
  font-size: var(--blog-size-small);
  line-height: 1.7;
}

.article-meta time {
  font-family: var(--font-mono);
}

.article-meta .badge {
  max-width: 100%;
  white-space: normal;
  overflow-wrap: anywhere;
  border: 1px solid var(--accent-line);
  background: var(--accent-soft);
  color: var(--accent-dark);
}

.article-card h3 {
  margin: 1rem 0 0.75rem;
  font-size: var(--blog-size-card-title);
}

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

.article-card h3 a:hover {
  color: var(--accent);
  text-decoration: underline;
  text-underline-offset: 0.2em;
}

.article-summary {
  margin: 0 0 1.25rem;
  color: var(--text-muted);
  font-size: var(--blog-size-copy);
  line-height: 1.8;
  overflow-wrap: anywhere;
}

.article-link {
  align-self: flex-start;
  margin-top: auto;
  color: var(--accent);
  font-size: var(--blog-size-small);
  font-weight: var(--weight-medium);
  text-underline-offset: 0.25em;
}

.blog-empty {
  grid-column: 1 / -1;
  margin: 0;
  padding: 2rem var(--blog-inset);
  border: 1px dashed var(--border);
  border-radius: var(--radius-m);
  background: var(--panel-2);
  color: var(--text-muted);
  font-size: var(--blog-size-copy);
  line-height: 1.8;
}

.blog-empty a {
  color: var(--accent);
}

.reading-wrap {
  width: 100%;
  max-width: calc(var(--blog-reading) + var(--gutter) + var(--gutter));
  margin-inline: auto;
  padding-inline: var(--gutter);
}

.reading-wrap .breadcrumbs {
  padding-inline: var(--blog-inset);
}

.article-hero {
  position: relative;
  width: 100%;
  max-width: var(--blog-reading);
  margin: 0 auto 1.5rem;
  padding-block: 2rem;
  padding-inline: var(--blog-inset);
  overflow: hidden;
  background-color: var(--panel-tint);
  background-image: radial-gradient(circle, var(--dot) 1px, transparent 1px);
  background-size: var(--blog-dot-size) var(--blog-dot-size);
  border: 1px solid var(--border);
  border-radius: var(--radius-l);
  box-shadow: var(--shadow-panel), inset 0 1px 0 var(--hl-inner);
}

.article-hero::before {
  content: "";
  position: absolute;
  top: 1.25rem;
  bottom: 1.25rem;
  left: 0.5rem;
  width: var(--blog-rule-width);
  border-radius: var(--radius-round);
  background: var(--accent);
}

.article-hero h1 {
  margin: 1.15rem 0 1rem;
  color: var(--text);
  font-size: var(--blog-size-article-title);
}

.article-hero .article-meta {
  justify-content: flex-start;
  gap: 0.5rem;
}

.article-hero .article-meta > * {
  max-width: 100%;
  padding: 0.3rem 0.65rem;
  border: 1px solid var(--border);
  border-radius: var(--radius-tag);
  background: var(--panel);
  color: var(--text-muted);
  font-size: var(--blog-size-small);
  line-height: 1.6;
  overflow-wrap: anywhere;
}

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

.article-hero > p,
.article-hero .article-summary {
  margin: 0;
  color: var(--text-muted);
  font-size: var(--blog-size-copy);
  line-height: var(--blog-leading);
}

.article-body {
  box-sizing: border-box;
  width: 100%;
  max-width: var(--blog-reading);
  margin-inline: auto;
  padding-inline: var(--blog-inset);
  color: var(--text);
  font-family: var(--font-body);
  font-size: var(--blog-size-copy);
  line-height: var(--blog-leading);
  overflow-wrap: anywhere;
  counter-reset: blog-section;
}

.article-body.reading-wrap {
  width: 100%;
  max-width: calc(var(--blog-reading) + var(--gutter) + var(--gutter));
  margin-inline: auto;
  padding-inline: calc(var(--gutter) + var(--blog-inset));
}

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

.article-body h2 {
  position: relative;
  margin: 2.25rem 0 1rem;
  padding-top: 0.9rem;
  color: var(--text);
  font-size: var(--blog-size-h2);
}

.article-body h2::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 2rem;
  height: var(--blog-rule-width);
  background: var(--accent);
  border-radius: var(--radius-round);
}

.article-body h3 {
  margin: 1.5rem 0 0.75rem;
  font-size: var(--blog-size-h3);
  color: var(--text);
}

.article-body p,
.article-body ul,
.article-body ol {
  margin-block: 0 1.2rem;
}

.article-body ul,
.article-body ol {
  padding-inline-start: 1.5rem;
}

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

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

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

.article-body img,
.article-body svg {
  max-width: 100%;
  height: auto;
}

.article-body code {
  padding: 0.15em 0.35em;
  border-radius: var(--radius-s);
  background: var(--panel-2);
  color: var(--accent-dark);
  font-family: var(--font-mono);
  font-size: var(--blog-size-small);
  overflow-wrap: anywhere;
}

.article-body pre {
  position: relative;
  max-width: 100%;
  margin: 1.5rem 0;
  padding: 3rem 1.25rem 1.25rem;
  overflow-x: auto;
  border: 1px solid var(--on-dark-line);
  border-radius: var(--radius-m);
  background: var(--violet-deep);
  color: var(--on-dark);
  line-height: 1.8;
  box-shadow: var(--shadow-note);
}

.article-body pre::before {
  content: "配置纪要 / CODE";
  position: absolute;
  top: 0.65rem;
  left: 1.25rem;
  color: var(--on-dark-muted);
  font-family: var(--font-mono);
  font-size: var(--blog-size-small);
}

.article-body pre code {
  display: block;
  padding: 0;
  background: none;
  color: var(--on-dark);
  white-space: pre;
  overflow-wrap: normal;
}

.article-body .table-scroll {
  max-width: 100%;
  margin: 1.5rem 0;
  overflow-x: auto;
  border: 1px solid var(--border);
  border-radius: var(--radius-m);
}

.article-body table {
  width: 100%;
  margin: 1.5rem 0;
  border-collapse: collapse;
  background: var(--panel);
  font-size: var(--blog-size-small);
  line-height: 1.8;
}

.article-body .table-scroll table {
  min-width: 38rem;
  margin: 0;
}

.article-body caption {
  padding: 0.75rem 1rem;
  text-align: left;
  color: var(--text-muted);
}

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

.article-body thead th {
  background: var(--accent-dark);
  color: var(--on-accent);
  font-weight: var(--weight-medium);
}

.article-body tbody th {
  color: var(--text);
}

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

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

.article-body blockquote,
.article-body .callout {
  position: relative;
  margin: 1.5rem 0;
  padding: 1.2rem 1.25rem 1.2rem 3.25rem;
  border: 1px solid var(--accent-line);
  border-left: var(--blog-rule-width) solid var(--accent);
  border-radius: var(--radius-s);
  background: var(--accent-soft);
  color: var(--text);
}

.article-body blockquote::before,
.article-body .callout::before {
  content: "i";
  position: absolute;
  top: 1.25rem;
  left: 1rem;
  width: 1.4rem;
  height: 1.4rem;
  border-radius: var(--radius-round);
  background: var(--accent);
  color: var(--on-accent);
  font-family: var(--font-mono);
  font-size: var(--blog-size-small);
  text-align: center;
  line-height: 1.4rem;
}

.article-body .callout-warning,
.article-body .callout.warning {
  border-color: var(--warn);
  background: var(--warn-soft);
}

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

.article-body .callout-success,
.article-body .callout.success {
  border-color: var(--success);
  background: var(--success-soft);
}

.article-body .callout-success::before,
.article-body .callout.success::before {
  background: var(--success);
  color: var(--on-accent);
}

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

.stat-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1rem;
  margin: 1.5rem 0;
}

.stat-card {
  min-width: 0;
  padding: 1.25rem;
  border: 1px solid var(--accent-line);
  border-top: var(--blog-rule-width) solid var(--accent);
  border-radius: var(--radius-m);
  background: var(--accent-soft);
}

.stat-card:nth-child(even) {
  border-color: var(--border);
  border-top-color: var(--text-muted);
  background: var(--panel-2);
}

.stat-num {
  display: block;
  color: var(--accent-dark);
  font-family: var(--font-display);
  font-size: var(--blog-size-stat);
  font-weight: var(--weight-display);
  line-height: 1.4;
  overflow-wrap: anywhere;
}

.stat-card:nth-child(even) .stat-num {
  color: var(--text);
}

.stat-label {
  display: block;
  margin-top: 0.4rem;
  color: var(--text-muted);
  font-size: var(--blog-size-small);
}

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

.article-body .check-list li {
  margin: 0;
  padding: 0.85rem 1rem;
  border: 1px solid var(--border);
  border-radius: var(--radius-s);
  background: var(--panel);
  list-style: none;
}

.article-body .verdict {
  margin: 1.5rem 0;
  padding: 1.1rem 1.25rem;
  border-left: var(--blog-rule-width) solid var(--accent);
  border-radius: var(--radius-s);
  background: var(--panel-2);
  color: var(--text);
}

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

.reading-wrap > .promo-block,
.blog-promo {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 1.5rem;
  margin: 2rem auto;
  padding: 1.75rem var(--blog-inset);
  border: 1px solid var(--accent);
  border-radius: var(--radius-l);
  background: linear-gradient(125deg, var(--accent-dark), var(--violet-deep));
  color: var(--on-dark);
  box-shadow: var(--shadow-panel);
}

.reading-wrap > .promo-block {
  max-width: var(--blog-reading);
}

.reading-wrap > .promo-block .promo-copy,
.blog-promo .promo-copy {
  flex: 1 1 18rem;
  min-width: 0;
}

.reading-wrap > .promo-block strong,
.blog-promo strong {
  color: var(--on-dark);
  font-family: var(--font-display);
  font-weight: var(--weight-display);
  font-size: var(--blog-size-h3);
}

.reading-wrap > .promo-block p,
.blog-promo p {
  margin: 0.6rem 0 0;
  color: var(--on-dark);
  font-size: var(--blog-size-copy);
  line-height: 1.8;
}

.blog-promo-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
}

.reading-wrap > .promo-block .btn-primary,
.blog-promo .btn-primary {
  border-color: var(--panel);
  background: var(--panel);
  color: var(--accent-dark);
}

.reading-wrap > .promo-block .btn-secondary,
.blog-promo .btn-secondary {
  border-color: var(--on-dark);
  background: transparent;
  color: var(--on-dark);
}

.reading-wrap > .promo-block .btn:hover,
.blog-promo .btn:hover {
  box-shadow: 0 0 0 2px var(--on-dark-line);
}

#related-posts,
#post-nav {
  box-sizing: border-box;
  width: 100%;
  max-width: var(--blog-reading);
  margin-inline: auto;
  padding-inline: var(--blog-inset);
}

#related-posts {
  padding-top: 1rem;
  padding-bottom: 1rem;
}

#related-posts:empty,
#post-nav:empty {
  display: none;
}

#related-posts .blog-end-heading {
  margin: 0 0 1.25rem;
}

.related-grid {
  gap: 1rem;
}

.related-card {
  padding: 1.1rem;
}

.related-card h3 {
  font-size: var(--blog-size-card-title);
}

#post-nav {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1rem;
  padding-top: 1rem;
  padding-bottom: 2rem;
}

.post-nav-card {
  display: flex;
  flex-direction: column;
  gap: 0.65rem;
  padding: 1.25rem;
  border: 1px solid var(--border);
  border-top: var(--blog-rule-width) solid var(--border);
  border-radius: var(--radius-m);
  background: var(--panel);
  color: var(--text);
  text-decoration: none;
  overflow-wrap: anywhere;
  transition: border-color var(--ease-time), transform var(--ease-time);
}

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

.post-nav-card:hover {
  border-color: var(--accent);
  transform: translateY(var(--blog-card-shift));
}

.post-nav-label {
  color: var(--accent);
  font-size: var(--blog-size-small);
  font-weight: var(--weight-medium);
}

.post-nav-title {
  font-size: var(--blog-size-copy);
  font-weight: var(--weight-display);
  line-height: 1.8;
}

.post-nav-date {
  margin-top: auto;
  color: var(--text-muted);
  font-family: var(--font-mono);
  font-size: var(--blog-size-small);
}

.blog-index :is(a, button):focus-visible,
.reading-wrap :is(a, button, summary, [tabindex]):focus-visible {
  outline: var(--blog-focus-width) solid var(--accent);
  outline-offset: 4px;
}

.blog-promo a:focus-visible,
.reading-wrap > .promo-block a:focus-visible {
  outline-color: var(--on-dark);
}

@media (max-width: 1000px) {
  .blog-post-grid,
  .related-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

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

  .article-body .table-scroll table {
    display: table;
    width: 100%;
    max-width: none;
  }
}

@media (max-width: 640px) {
  .no-break {
    white-space: normal;
  }

  .blog-post-grid,
  .related-grid,
  .stat-grid,
  #post-nav {
    grid-template-columns: minmax(0, 1fr);
  }

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

  .blog-list-hero {
    padding-block: 2rem;
  }

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

  .blog-filters {
    gap: 0.5rem;
  }

  .blog-filters button {
    padding-inline: 0.8rem;
  }

  .article-body pre {
    padding-inline: 1rem;
  }

  .article-body blockquote,
  .article-body .callout {
    padding-right: 1rem;
  }

  .blog-promo-actions {
    width: 100%;
  }
}

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

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