/* 博客界面仅消费 base.css 中的设计令牌。 */
.blog-index,
.blog-article {
  font-family: var(--font-body);
  color: var(--text);
  background: var(--bg);
}

.blog-index main,
.blog-article main {
  min-width: 0;
}

.blog-skip {
  position: fixed;
  inset-block-start: 1rem;
  inset-inline-start: var(--gutter);
  z-index: 100;
  padding: 0.75rem 1rem;
  border: 1px solid var(--accent-dark);
  border-radius: var(--r-sm);
  background: var(--bg-panel);
  color: var(--accent-dark);
  transform: translateY(-180%);
}

.blog-skip:focus {
  transform: none;
}

.blog-index :focus-visible,
.blog-article :focus-visible,
.reading-wrap :focus-visible,
#related-posts :focus-visible,
#post-nav :focus-visible {
  outline: 3px solid var(--accent);
  outline-offset: 4px;
}

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

.blog-breadcrumbs ol,
.breadcrumbs ol {
  display: flex;
  flex-wrap: wrap;
  gap: 0.35rem 0.65rem;
  margin: 0;
  padding: 0;
  list-style: none;
}

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

.blog-breadcrumbs li + li::before,
.breadcrumbs li + li::before {
  content: "›";
  margin-inline-end: 0.65rem;
  color: var(--text-muted);
}

.blog-breadcrumbs a,
.breadcrumbs a {
  color: var(--accent-dark);
  text-underline-offset: 0.2em;
}

.blog-index h1,
.blog-index h2,
.blog-index h3,
.article-hero h1,
.reading-wrap h1,
.reading-wrap h2,
.reading-wrap h3,
#related-posts h2,
#related-posts h3 {
  display: block;
  font-family: var(--font-display);
  text-wrap: pretty;
  letter-spacing: -0.015em;
  overflow-wrap: break-word;
}

.blog-index-hero,
.article-hero {
  position: relative;
  box-sizing: border-box;
  border: 1px solid var(--border);
  border-radius: var(--r-md);
  background: linear-gradient(160deg, var(--bg-panel), var(--hero-bottom));
  box-shadow: var(--shadow-card), inset 0 1px 0 var(--hl);
}

.blog-index-hero {
  padding-block: 4.75rem 2rem;
  padding-inline: max(1.5rem, var(--gutter));
}

.blog-index-hero h1 {
  margin: 0.65rem 0 1rem;
  font-size: clamp(2rem, 4vw, 3rem);
  font-weight: var(--weight-display);
  line-height: 1.3;
}

.blog-index-hero .kicker {
  margin: 0;
  color: var(--accent);
  font-size: var(--size-small);
  font-weight: var(--weight-bold);
}

.blog-intro-summary {
  max-width: 48rem;
  margin: 0;
  color: var(--text-muted);
  font-size: 1rem;
  line-height: 1.9;
}

.article-chrome {
  position: relative;
  box-sizing: border-box;
  min-height: 2.75rem;
  padding: 0.75rem 1rem 0.75rem 5rem;
  border-bottom: 1px solid var(--ink-line);
  border-radius: var(--r-md) var(--r-md) 0 0;
  background: var(--ink);
  color: var(--on-ink-muted);
  font-family: var(--font-mono);
  font-size: 0.75rem;
  line-height: 1.25rem;
  text-align: right;
  overflow-wrap: anywhere;
}

.article-chrome::before {
  content: "";
  position: absolute;
  inset-inline-start: 1rem;
  inset-block-start: 1rem;
  width: 3rem;
  height: 0.7rem;
  background:
    radial-gradient(circle at 0.35rem 50%, var(--error) 0.28rem, var(--transparent) 0.3rem),
    radial-gradient(circle at 1.45rem 50%, var(--warn) 0.28rem, var(--transparent) 0.3rem),
    radial-gradient(circle at 2.55rem 50%, var(--success) 0.28rem, var(--transparent) 0.3rem);
}

.blog-index-hero > .article-chrome,
.article-hero > .article-chrome {
  position: absolute;
  inset-block-start: 0;
  inset-inline: 0;
}

.blog-library {
  padding-block: 2.5rem 1rem;
}

.blog-library-heading {
  display: flex;
  align-items: baseline;
  flex-wrap: wrap;
  gap: 0.5rem 1.5rem;
  margin-bottom: 1rem;
}

.blog-library-heading h2 {
  margin: 0;
  font-size: 1.5rem;
  font-weight: var(--weight-bold);
}

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

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

.blog-filter {
  min-height: 2.75rem;
  padding: 0.6rem 1rem;
  border: 1px solid var(--border);
  border-radius: var(--r-sm);
  background: var(--bg-panel);
  color: var(--text-muted);
  font: inherit;
  font-size: var(--size-small);
  cursor: pointer;
  transition: border-color var(--motion-fast), background-color var(--motion-fast);
}

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

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

.blog-post-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1.4rem;
}

.article-card {
  position: relative;
  display: flex;
  flex-direction: column;
  min-width: 0;
  border: 1px solid var(--border);
  border-radius: var(--r-md);
  background: var(--bg-panel);
  box-shadow: var(--shadow-card), inset 0 1px 0 var(--hl);
  transition: border-color var(--motion-fast);
}

.article-card::after {
  content: "";
  position: absolute;
  inset-inline: 0;
  inset-block-end: 0;
  height: 0.3rem;
  border-radius: 0 0 var(--r-md) var(--r-md);
  background: linear-gradient(90deg, var(--transparent), var(--accent-a22), var(--transparent));
  pointer-events: none;
}

.article-card:hover,
.article-card:focus-within {
  border-color: var(--accent);
}

.article-card .article-body {
  display: flex;
  flex: 1;
  flex-direction: column;
  align-items: flex-start;
  gap: 1rem;
  padding: 1.5rem;
}

.article-meta {
  display: flex;
  flex-wrap: wrap;
  justify-content: flex-start;
  align-items: center;
  gap: 0.5rem;
  color: var(--text-muted);
  font-size: var(--size-small);
  line-height: 1.6;
}

.article-meta time,
.article-meta .read-time,
.article-meta .reading-time {
  padding: 0.25rem 0.65rem;
  border: 1px solid var(--border);
  border-radius: var(--r-pill);
  background: var(--bg-panel);
  font-variant-numeric: tabular-nums;
}

.article-meta .tag {
  padding: 0.25rem 0.65rem;
  border: 1px solid var(--accent-dark);
  border-radius: var(--r-pill);
  background: var(--accent-dark);
  color: var(--on-accent);
}

.article-card h3,
.related-card h3 {
  margin: 0;
  font-size: 1.2rem;
  font-weight: var(--weight-bold);
  line-height: 1.65;
}

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

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

.article-card .article-body > p,
.related-card > p {
  margin: 0;
  color: var(--text-muted);
  font-size: 1rem;
  line-height: 1.85;
}

.article-link {
  display: inline-block;
  margin-top: auto;
  padding-block: 0.35rem;
  color: var(--accent-dark);
  font-size: var(--size-small);
  font-weight: var(--weight-bold);
  text-decoration: none;
  text-underline-offset: 0.25em;
}

.article-link:hover {
  text-decoration: underline;
}

.blog-empty {
  grid-column: 1 / -1;
  margin: 0;
  padding: 2rem;
  border: 1px dashed var(--border);
  border-radius: var(--r-md);
  background: var(--bg-panel);
  color: var(--text-muted);
  line-height: 1.9;
}

.blog-index-promo {
  padding-block: 1.5rem 3rem;
}

/* 阅读列的外盒与内衬保持一致，覆盖基础样式的阅读宽度。 */
.reading-wrap,
.article-hero,
.blog-article .blog-breadcrumbs,
.blog-article .breadcrumbs,
.article-breadcrumbs,
.article-column,
.article-end,
#related-posts,
#post-nav {
  box-sizing: border-box;
  width: calc(56rem + 2 * max(1.5rem, var(--gutter)));
  max-width: 100%;
  margin-inline: auto;
  padding-inline: max(1.5rem, var(--gutter));
}

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

.article-hero {
  margin-block: 0 1.75rem;
  padding-block: 4.75rem 1.75rem;
}

.article-hero .article-meta {
  margin-bottom: 1rem;
}

.article-hero h1 {
  margin: 0 0 1rem;
  font-size: clamp(1.85rem, 3.6vw, 2.6rem);
  font-weight: var(--weight-display);
  line-height: 1.45;
}

.article-hero .article-summary,
.article-hero .summary,
.article-hero > p {
  margin-block: 0.75rem 0;
  color: var(--text-muted);
  font-size: 1rem;
  line-height: 1.9;
}

.reading-wrap {
  padding-block: 0;
  font-family: var(--font-body);
  font-size: 1rem;
  line-height: 1.9;
  color: var(--text);
}

.reading-wrap.prose,
.reading-wrap .prose,
.reading-wrap [data-article-body] {
  font-size: 1rem;
  line-height: 1.9;
}

.reading-wrap :where(p, ul, ol, dl, blockquote, pre, figure) {
  margin-block: 1rem 1.35rem;
}

.reading-wrap :where(p, li, dd, a) {
  overflow-wrap: anywhere;
}

.reading-wrap h2 {
  margin-block: 2.25rem 1rem;
  font-size: clamp(1.3rem, 2.5vw, 1.6rem);
  font-weight: var(--weight-bold);
  line-height: 1.6;
  scroll-margin-top: var(--anchor-offset);
}

.reading-wrap h2::before {
  content: "";
  display: inline-block;
  width: 1.4rem;
  height: 0.25rem;
  margin-inline-end: 0.65rem;
  border-radius: var(--r-xs);
  background: linear-gradient(90deg, var(--accent), var(--accent-dark));
  vertical-align: middle;
}

.reading-wrap > h2:first-child,
.reading-wrap > section:first-child > h2:first-child,
.reading-wrap > .prose > h2:first-child,
.reading-wrap > [data-article-body] > h2:first-child {
  margin-top: 0.75rem;
}

.reading-wrap h3 {
  margin-block: 1.65rem 0.75rem;
  font-size: clamp(1.1rem, 2vw, 1.3rem);
  line-height: 1.65;
}

.reading-wrap ul,
.reading-wrap ol {
  padding-inline-start: 1.5rem;
}

.reading-wrap li + li {
  margin-top: 0.55rem;
}

.reading-wrap a {
  color: var(--accent-dark);
  text-decoration-thickness: 1px;
  text-underline-offset: 0.2em;
}

.reading-wrap strong {
  color: var(--text);
  font-weight: var(--weight-bold);
}

.reading-wrap blockquote {
  padding: 1rem 1.5rem;
  border-inline-start: 3px solid var(--accent);
  border-radius: 0 var(--r-sm) var(--r-sm) 0;
  background: var(--bg-panel-2);
  color: var(--text-muted);
}

.reading-wrap blockquote p:first-child {
  margin-top: 0;
}

.reading-wrap blockquote p:last-child {
  margin-bottom: 0;
}

.reading-wrap :not(pre) > code {
  padding: 0.15em 0.35em;
  border: 1px solid var(--border);
  border-radius: var(--r-xs);
  background: var(--bg-panel-2);
  color: var(--accent-dark);
  font-family: var(--font-mono);
  font-size: 0.9em;
  overflow-wrap: anywhere;
}

.reading-wrap pre {
  position: relative;
  max-width: 100%;
  padding: 3rem 1.4rem 1.4rem;
  border: 1px solid var(--ink-line-strong);
  border-radius: var(--r-md);
  background: var(--ink);
  color: var(--on-ink);
  box-shadow: var(--shadow-card);
  overflow-x: auto;
  font-family: var(--font-mono);
  font-size: 0.9rem;
  line-height: 1.8;
  tab-size: 2;
}

.reading-wrap pre::before {
  content: "";
  position: absolute;
  top: 1rem;
  left: 1.4rem;
  width: 3rem;
  height: 0.7rem;
  background:
    radial-gradient(circle at 0.35rem 50%, var(--error) 0.28rem, var(--transparent) 0.3rem),
    radial-gradient(circle at 1.45rem 50%, var(--warn) 0.28rem, var(--transparent) 0.3rem),
    radial-gradient(circle at 2.55rem 50%, var(--success) 0.28rem, var(--transparent) 0.3rem);
}

.reading-wrap pre code {
  padding: 0;
  border: 0;
  background: var(--transparent);
  color: inherit;
  font: inherit;
  white-space: pre;
  overflow-wrap: normal;
}

.reading-wrap .table-scroll {
  max-width: 100%;
  margin-block: 1.5rem;
  border: 1px solid var(--border);
  border-radius: var(--r-sm);
  overflow-x: auto;
}

.reading-wrap table {
  width: 100%;
  margin-block: 1.5rem;
  border-collapse: collapse;
  background: var(--bg-panel);
  font-size: 0.95rem;
  line-height: 1.8;
}

.reading-wrap .table-scroll table {
  min-width: 38rem;
  margin: 0;
}

.reading-wrap caption {
  padding: 0.8rem 1rem;
  color: var(--text-muted);
  text-align: left;
  font-size: var(--size-small);
}

.reading-wrap th,
.reading-wrap td {
  padding: 0.85rem 1rem;
  border-bottom: 1px solid var(--border);
  text-align: left;
  vertical-align: top;
}

.reading-wrap thead th {
  background: var(--accent-dark);
  color: var(--on-accent);
  font-weight: var(--weight-bold);
}

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

.reading-wrap tbody tr:hover {
  background: color-mix(in srgb, var(--accent) 12%, var(--bg-panel));
}

.reading-wrap .callout,
.reading-wrap .verdict {
  position: relative;
  margin-block: 1.5rem;
  padding: 1.15rem 1.25rem;
  border: 1px solid var(--border);
  border-inline-start: 4px solid var(--accent);
  border-radius: var(--r-sm);
  background: color-mix(in srgb, var(--accent) 7%, var(--bg-panel));
}

.reading-wrap .callout {
  padding-inline-start: 3.5rem;
}

.reading-wrap .callout::before {
  content: "i";
  position: absolute;
  top: 1.2rem;
  left: 1rem;
  width: 1.45rem;
  height: 1.45rem;
  border-radius: var(--r-circle);
  background: var(--accent);
  color: var(--on-accent);
  font-family: var(--font-mono);
  font-weight: var(--weight-bold);
  line-height: 1.45rem;
  text-align: center;
}

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

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

.reading-wrap .callout.success,
.reading-wrap .callout-success {
  border-inline-start-color: var(--success);
  background: color-mix(in srgb, var(--success) 10%, var(--bg-panel));
}

.reading-wrap .callout.success::before,
.reading-wrap .callout-success::before {
  content: "i";
  background: var(--success);
  color: var(--ink);
}

.reading-wrap .callout > :first-child,
.reading-wrap .verdict > :first-child {
  margin-top: 0;
}

.reading-wrap .callout > :last-child,
.reading-wrap .verdict > :last-child {
  margin-bottom: 0;
}

.reading-wrap .verdict strong:first-child {
  color: var(--accent-dark);
}

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

.stat-card {
  position: relative;
  padding: 1.4rem;
  border: 1px solid var(--border);
  border-top: 3px solid var(--accent);
  border-radius: var(--r-sm);
  background: var(--bg-panel);
  box-shadow: var(--shadow-card);
}

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

.stat-card .stat-num {
  display: block;
  margin: 0 0 0.4rem;
  color: var(--accent-dark);
  font-family: var(--font-display);
  font-size: 1.75rem;
  font-weight: var(--weight-display);
  line-height: 1.3;
  font-variant-numeric: tabular-nums;
}

.stat-card .stat-label {
  display: block;
  margin: 0;
  color: var(--text-muted);
  font-size: var(--size-small);
  line-height: 1.8;
}

.reading-wrap .check-list {
  display: grid;
  gap: 0.75rem;
  padding: 0;
  list-style: none;
}

.reading-wrap .check-list > li {
  margin: 0;
  padding: 1rem 1.2rem;
  border: 1px solid var(--border);
  border-radius: var(--r-sm);
  background: var(--bg-panel);
  list-style: none;
}

.reading-wrap .check-list > li::before,
.reading-wrap .check-list > li::marker {
  content: none;
}

.promo-block {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 1.5rem;
  box-sizing: border-box;
  margin-block: 1.75rem;
  padding: 1.75rem;
  border: 1px solid var(--accent-dark);
  border-radius: var(--r-md);
  background: linear-gradient(125deg, var(--accent-dark), var(--ink));
  color: var(--on-ink);
  box-shadow: var(--shadow-card), inset 0 1px 0 var(--ink-edge);
}

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

.promo-block h2,
.reading-wrap .promo-block h2 {
  display: block;
  margin: 0 0 0.65rem;
  color: var(--on-ink);
  font-size: 1.5rem;
  line-height: 1.5;
}

.reading-wrap .promo-block h2::before {
  content: none;
}

.promo-block p {
  margin: 0;
  color: var(--on-ink-muted);
  font-size: 1rem;
  line-height: 1.85;
}

.promo-block .cta-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  flex-shrink: 0;
  margin: 0;
}

.promo-block .btn {
  flex-shrink: 0;
  text-decoration: none;
}

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

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

.promo-block .btn-ghost {
  border-color: var(--on-ink-muted);
  background: var(--transparent);
  color: var(--on-ink);
}

.promo-block .btn-ghost:hover {
  background: var(--ink-hl);
  color: var(--on-ink);
}

#related-posts {
  margin-block: 0;
  padding-block: 1.5rem 1rem;
}

#related-posts > h2 {
  margin: 0 0 1.1rem;
  font-size: 1.5rem;
  line-height: 1.6;
}

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

.related-card {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 0.9rem;
  min-width: 0;
  padding: 1.25rem;
  border: 1px solid var(--border);
  border-top: 3px solid var(--border);
  border-radius: var(--r-sm);
  background: var(--bg-panel);
  box-shadow: var(--shadow-card);
  transition: border-color var(--motion-fast);
}

.related-card:hover,
.related-card:focus-within {
  border-color: var(--accent);
}

.related-card h3 {
  font-size: 1.05rem;
}

.related-card > p {
  font-size: 0.95rem;
}

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

.post-nav-card {
  display: flex;
  flex-direction: column;
  gap: 0.65rem;
  min-width: 0;
  padding: 1.25rem;
  border: 1px solid var(--border);
  border-top: 3px solid var(--border);
  border-radius: var(--r-sm);
  background: var(--bg-panel);
  color: var(--text);
  text-decoration: none;
  transition: border-color var(--motion-fast), background-color var(--motion-fast);
}

.post-nav-card:hover,
.post-nav-card:focus-visible {
  border-color: var(--accent);
  background: color-mix(in srgb, var(--accent) 5%, var(--bg-panel));
}

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

.post-nav-card strong {
  color: var(--text);
  font-size: 1rem;
  line-height: 1.8;
  overflow-wrap: anywhere;
}

.post-nav-card time {
  margin-top: auto;
  color: var(--text-muted);
  font-family: var(--font-mono);
  font-size: 0.8rem;
}

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

.reading-wrap #related-posts,
.reading-wrap #post-nav,
.article-column #related-posts,
.article-column #post-nav,
.article-end #related-posts,
.article-end #post-nav {
  width: 100%;
  max-width: 100%;
  padding-inline: 0;
}

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

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

  .reading-wrap .table-scroll table {
    display: table;
    width: 100%;
    max-width: none;
  }

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

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

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

  .blog-index-hero h1 {
    font-size: clamp(1.85rem, 7vw, 2.4rem);
  }

  .blog-filter {
    padding-inline: 0.8rem;
  }

  .article-card .article-body {
    padding: 1.25rem;
  }

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

  .article-hero h1 {
    font-size: clamp(1.7rem, 6.5vw, 2.25rem);
  }

  .promo-block {
    padding: 1.5rem;
  }

  .promo-block .cta-row {
    width: 100%;
  }

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

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

  .blog-library {
    padding-top: 2rem;
  }
}

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