:root {
  --blog-column: 56rem;
  --blog-gutter: max(1.5rem, var(--gutter));
  --blog-font-body: 1rem;
  --blog-font-small: 0.875rem;
  --blog-font-h1: clamp(1.8rem, 3.6vw, 2.6rem);
  --blog-font-list-title: clamp(2rem, 4vw, 3rem);
  --blog-font-h2: clamp(1.3rem, 2.6vw, 1.6rem);
  --blog-font-h3: 1.3rem;
  --blog-leading: 1.85;
  --blog-tracking: -0.015em;
  --blog-shadow: 0 12px 40px var(--accent-a10), inset 0 1px 0 var(--hl-white);
}

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

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

.blog-page h1,
.blog-page h2,
.blog-page h3,
.article-hero h1,
.article-body h1,
.article-body h2,
.article-body h3,
article.prose h1,
article.prose h2,
article.prose h3,
#related-posts h2,
#related-posts h3 {
  display: block;
  font-family: var(--font-display);
  font-weight: var(--weight-bold);
  letter-spacing: var(--blog-tracking);
  text-wrap: pretty;
  overflow-wrap: anywhere;
}

.blog-skip {
  position: fixed;
  top: 0.75rem;
  left: 1rem;
  z-index: 1000;
  padding: 0.7rem 1rem;
  background: var(--text);
  color: var(--bg-panel);
  border-radius: var(--r-pill);
  transform: translateY(-200%);
}

.blog-skip:focus {
  transform: translateY(0);
}

.blog-page :focus-visible,
.article-page :focus-visible,
#related-posts :focus-visible,
#post-nav :focus-visible {
  outline: 2px solid var(--iris);
  outline-offset: 4px;
}

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

.breadcrumbs ol {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 0.45rem 0.7rem;
  padding: 0;
  margin: 0;
  list-style: none;
}

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

.breadcrumbs li + li::before {
  content: "／";
  margin-inline-end: 0.7rem;
  color: var(--text-faint);
}

.breadcrumbs a,
.article-body a,
article.prose a {
  color: var(--iris);
  text-decoration-thickness: 1px;
  text-underline-offset: 0.2em;
}

.blog-band,
.article-hero {
  position: relative;
  box-sizing: border-box;
  width: 100%;
  max-width: none;
  margin-inline: 0;
  padding-block: 2.75rem;
  padding-inline: max(var(--blog-gutter), calc((100% - var(--blog-column)) / 2));
  border: 0;
  border-block: 1px solid var(--border-cream);
  border-radius: 0;
  background: linear-gradient(135deg, var(--bg-panel-2), var(--bg));
  box-shadow: none;
}

.blog-band > .reading-wrap,
.article-hero > .reading-wrap,
.article-hero__inner {
  box-sizing: border-box;
  width: 100%;
  max-width: var(--blog-column);
  margin-inline: auto;
  padding-inline: 0;
}

.blog-band h1 {
  margin: 0.75rem 0 1rem;
  font-size: var(--blog-font-list-title);
  line-height: 1.25;
}

.article-hero h1 {
  margin: 0.85rem 0 1.1rem;
  font-size: var(--blog-font-h1);
  line-height: 1.4;
}

.blog-band__meta,
.article-hero__meta,
.article-meta {
  display: flex;
  flex-wrap: wrap;
  justify-content: flex-start;
  align-items: baseline;
  gap: 0.35rem 0;
  margin: 0;
  color: var(--text-muted);
  font-size: var(--blog-font-small);
  line-height: 1.8;
}

.article-hero__meta > * + *::before,
.article-meta > * + *::before {
  content: "·";
  margin-inline: 0.65rem;
}

.article-hero__meta .chip,
.article-meta .chip {
  display: inline;
  padding: 0;
  border: 0;
  border-radius: 0;
  background: none;
  color: inherit;
  font: inherit;
}

.blog-band__summary,
.article-hero__summary,
.article-hero > p:last-child {
  max-width: var(--blog-column);
  margin-block: 0.75rem 0;
  color: var(--text-muted);
  font-size: var(--blog-font-body);
  line-height: var(--blog-leading);
}

.blog-catalog {
  padding-block: 2.5rem 3rem;
}

.blog-catalog .section-head h2 {
  font-size: var(--blog-font-h2);
}

.blog-filters {
  display: flex;
  flex-wrap: wrap;
  gap: 0.65rem;
  margin-block: 1.5rem 1rem;
}

.blog-filters button {
  min-height: 44px;
  padding: 0.55rem 1.1rem;
  border: 1px solid var(--border);
  border-radius: var(--r-pill);
  background: var(--bg-panel);
  color: var(--text);
  font: inherit;
  font-size: var(--blog-font-small);
  cursor: pointer;
  transition: background var(--duration) var(--ease-out), border-color var(--duration) var(--ease-out);
}

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

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

.blog-results-status {
  min-height: 1.75rem;
  margin-block: 0.75rem 1.25rem;
  color: var(--text-muted);
  font-size: var(--blog-font-small);
}

.blog-post-grid,
.related-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1.5rem;
}

.article-card,
.related-card {
  min-width: 0;
  padding: 1.6rem;
  background: var(--bg-panel-2);
  border: 1px solid var(--border-cream);
  border-radius: var(--r-card);
  box-shadow: var(--blog-shadow);
  overflow-wrap: anywhere;
  transition: border-color var(--duration) var(--ease-out), transform var(--duration) var(--ease-out);
}

.article-card {
  display: flex;
  flex-direction: column;
}

.article-card:hover,
.related-card:hover {
  border-color: var(--iris);
  transform: translateY(-3px);
}

.article-card__meta,
.related-card__meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.6rem 0.9rem;
  color: var(--text-muted);
  font-size: var(--blog-font-small);
}

.article-card__meta .chip {
  white-space: normal;
}

.article-card h2.article-card__title,
.related-card h3 {
  margin-block: 1rem 0.75rem;
  font-size: var(--blog-font-h3);
  line-height: 1.6;
}

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

.article-card__title a:hover,
.related-card h3 a:hover {
  color: var(--iris);
}

.article-card__summary,
.related-card p {
  margin-block: 0 1.25rem;
  color: var(--text-muted);
  font-size: var(--blog-font-body);
  line-height: var(--blog-leading);
}

.article-card__read {
  align-self: flex-start;
  margin-top: auto;
  padding-block: 0.45rem;
  color: var(--iris);
  font-weight: var(--weight-semibold);
  text-underline-offset: 0.25em;
}

.blog-empty {
  grid-column: 1 / -1;
  padding: 2rem;
  margin: 0;
  background: var(--bg-panel-2);
  border-radius: var(--r-card-sm);
  color: var(--text-muted);
}

.article-body,
article.prose {
  counter-reset: blog-section;
  font-family: var(--font-body);
  font-size: var(--blog-font-body);
  line-height: var(--blog-leading);
  overflow-wrap: anywhere;
}

.article-body.reading-wrap,
article.prose.reading-wrap {
  padding-block: 1.75rem 1rem;
}

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

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

.article-body h2,
article.prose h2 {
  position: relative;
  counter-increment: blog-section;
  margin-block: 2.1rem 1rem;
  font-size: var(--blog-font-h2);
  line-height: 1.6;
  color: var(--text);
  scroll-margin-top: var(--anchor-offset);
}

.article-body h2::before,
article.prose h2::before {
  content: counter(blog-section, decimal-leading-zero);
  display: inline-block;
  margin-inline-end: 0.65rem;
  padding: 0.1rem 0.55rem;
  border-radius: var(--r-ic);
  background: var(--bg-panel-2);
  color: var(--text-muted);
  font-size: var(--blog-font-small);
  font-family: var(--font-body);
  font-weight: var(--weight-semibold);
  vertical-align: 0.1em;
}

.article-body h3,
article.prose h3 {
  margin-block: 1.6rem 0.75rem;
  font-size: var(--blog-font-h3);
  line-height: 1.6;
}

.article-body ul,
.article-body ol,
article.prose ul,
article.prose ol {
  padding-inline-start: 1.5rem;
  margin-block: 0.75rem 1.5rem;
}

.article-body li,
article.prose li {
  margin-block: 0.45rem;
}

.article-body blockquote,
article.prose blockquote {
  margin: 1.5rem 0;
  padding: 1.25rem 1.5rem;
  border-inline-start: 3px solid var(--doodle);
  border-radius: var(--r-tile);
  background: var(--bg-panel-2);
  color: var(--text-muted);
}

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

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

.article-body table,
article.prose table {
  width: 100%;
  margin-block: 1.5rem;
  border-collapse: collapse;
  font-size: var(--blog-font-small);
  text-align: left;
}

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

.article-body caption,
article.prose caption {
  padding: 0.8rem 1rem;
  color: var(--text-muted);
  text-align: left;
}

.article-body th,
.article-body td,
article.prose th,
article.prose td {
  padding: 0.85rem 1rem;
  border-bottom: 1px solid var(--border);
  vertical-align: top;
}

.article-body thead th,
article.prose thead th {
  background: var(--text);
  color: var(--bg-panel);
  font-weight: var(--weight-semibold);
}

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

.article-body tbody tr:hover,
article.prose tbody tr:hover {
  background: var(--iris-tint);
}

.article-body pre,
article.prose pre {
  position: relative;
  max-width: 100%;
  overflow-x: auto;
  margin-block: 1.5rem;
  padding: 2.75rem 1.4rem 1.4rem;
  border: 1px solid var(--ink-a22);
  border-radius: var(--r-win);
  background: var(--text);
  color: var(--bg-panel);
  font-family: var(--font-mono);
  font-size: var(--blog-font-small);
  line-height: 1.8;
  white-space: pre;
}

.article-body pre::before,
article.prose pre::before {
  content: "线路笔记 / CODE";
  position: absolute;
  top: 0.7rem;
  left: 1.4rem;
  color: var(--bg-panel-2);
  font-family: var(--font-body);
  font-size: var(--blog-font-small);
}

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

.article-body :not(pre) > code,
article.prose :not(pre) > code {
  padding: 0.15rem 0.4rem;
  border-radius: var(--r-ic);
  background: var(--bg-sunken);
  color: var(--text);
  overflow-wrap: anywhere;
}

.article-body pre code,
article.prose pre code {
  padding: 0;
  background: none;
  color: inherit;
}

.callout {
  position: relative;
  margin-block: 1.5rem;
  padding: 1.2rem 1.3rem 1.2rem 3.6rem;
  border-inline-start: 3px solid var(--iris);
  border-radius: var(--r-tile);
  background: var(--iris-tint);
  color: var(--text);
}

.callout::before {
  content: "i";
  position: absolute;
  inset-block-start: 1.2rem;
  inset-inline-start: 1rem;
  display: inline-block;
  width: 1.6rem;
  height: 1.6rem;
  border: 1px solid currentColor;
  border-radius: var(--r-round);
  color: var(--iris);
  font-weight: var(--weight-bold);
  text-align: center;
  line-height: 1.5rem;
}

.callout--warning,
.callout.warning {
  border-color: var(--warn);
  background: color-mix(in srgb, var(--warn) 12%, var(--bg-panel));
}

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

.callout--success,
.callout.success {
  border-color: var(--success);
  background: var(--success-tint);
}

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

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

.stat-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(min(100%, 12rem), 1fr));
  gap: 1rem;
  margin-block: 1.5rem;
}

.stat-card {
  min-width: 0;
  padding: 1.4rem;
  border: 1px solid var(--border-cream);
  border-block-start: 3px solid var(--doodle);
  border-radius: var(--r-card-sm);
  background: var(--bg-panel-2);
}

.stat-card:nth-child(even) {
  border-color: var(--iris-tint);
  border-block-start-color: var(--iris);
  background: var(--iris-tint);
}

.stat-num {
  display: block;
  font-family: var(--font-mono);
  font-size: clamp(1.4rem, 3vw, 2rem);
  font-weight: var(--weight-bold);
  color: var(--accent-dark);
  overflow-wrap: anywhere;
}

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

.stat-label {
  display: block;
  margin-top: 0.35rem;
  color: var(--text-muted);
  font-size: var(--blog-font-small);
}

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

.check-list li {
  padding: 1rem 1.2rem;
  border: 1px solid var(--border);
  border-radius: var(--r-tile);
  background: var(--bg-panel);
}

.verdict {
  margin-block: 1.5rem;
  padding: 1.25rem 1.5rem;
  border-inline-start: 4px solid var(--accent);
  border-radius: var(--r-tile);
  background: var(--bg-panel-2);
  box-shadow: inset 0 1px 0 var(--hl-white);
  color: var(--text);
}

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

.promo-block {
  position: relative;
  box-sizing: border-box;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 1.25rem 2rem;
  padding: 1.75rem var(--blog-gutter);
  border: 1px solid var(--border-cream);
  border-radius: var(--r-card);
  background: linear-gradient(120deg, var(--bg-panel-2), var(--iris-tint));
  box-shadow: var(--blog-shadow);
  color: var(--text);
}

.promo-block.reading-wrap {
  width: calc(100% - var(--blog-gutter) - var(--blog-gutter));
  max-width: var(--blog-column);
  margin-block: 1.5rem 2rem;
}

.promo-block__copy {
  flex: 1 1 20rem;
  min-width: 0;
}

.promo-block__brand {
  margin-block: 0 0.4rem;
  font-family: var(--font-display);
  font-size: var(--blog-font-h3);
  font-weight: var(--weight-bold);
}

.promo-block__copy p:last-child {
  margin-bottom: 0;
  font-size: var(--blog-font-body);
  line-height: var(--blog-leading);
}

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

.promo-block .btn--primary {
  border: 1px solid var(--text);
  background: var(--bg-panel);
  color: var(--text);
}

.promo-block .btn--primary:hover {
  background: var(--bg-panel-2);
}

.promo-block .btn--ghost {
  border-color: var(--text);
  background: var(--clear);
  color: var(--text);
}

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

.reading-wrap #related-posts,
.reading-wrap #post-nav {
  max-width: none;
  padding-inline: 0;
}

#related-posts {
  padding-block: 1.5rem;
}

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

#related-posts .related-heading {
  margin: 0 0 1.25rem;
  font-size: var(--blog-font-h2);
  line-height: 1.6;
}

#related-posts .related-heading::before {
  content: none;
}

.related-grid {
  gap: 1rem;
}

.related-card {
  padding: 1.25rem;
  background: var(--bg-panel);
  border-radius: var(--r-card-sm);
}

.related-card h3 {
  font-size: 1.1rem;
}

.related-card p {
  margin-bottom: 0;
  font-size: var(--blog-font-small);
}

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

.post-nav-card {
  min-width: 0;
  padding: 1.4rem;
  border: 1px solid var(--border);
  border-radius: var(--r-card-sm);
  background: var(--bg-panel-2);
  color: var(--text);
  text-decoration: none;
  transition: border-color var(--duration) var(--ease-out), transform var(--duration) var(--ease-out);
}

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

.post-nav-card:hover {
  border-color: var(--iris);
  transform: translateY(-3px);
}

.post-nav-card__label,
.post-nav-card__date,
.post-nav-card__title {
  display: block;
}

.post-nav-card__label {
  color: var(--iris);
  font-size: var(--blog-font-small);
}

.post-nav-card__title {
  margin-block: 0.5rem;
  font-weight: var(--weight-semibold);
  line-height: 1.7;
  overflow-wrap: anywhere;
}

.post-nav-card__date {
  color: var(--text-muted);
  font-size: var(--blog-font-small);
}

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

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

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

  .article-body .table-scroll table,
  article.prose .table-scroll table {
    display: table;
    max-width: none;
  }
}

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

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

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

  .blog-band,
  .article-hero {
    padding-block: 2rem;
  }

  .article-card {
    padding: 1.4rem;
  }

  .blog-filters {
    gap: 0.5rem;
  }

  .blog-filters button {
    padding-inline: 0.9rem;
  }

  .promo-block {
    padding: 1.4rem;
  }

  .promo-block__actions {
    width: 100%;
  }
}

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

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