:root {
  --blog-column: 56rem;
  --blog-gutter: max(var(--gutter), 1.5rem);
  --blog-body-size: 1rem;
  --blog-body-leading: 1.9;
  --blog-list-title: clamp(2rem, 4.5vw, 3rem);
  --blog-article-title: clamp(1.8rem, 3.5vw, 2.6rem);
  --blog-section-title: clamp(1.3rem, 2.4vw, 1.6rem);
  --blog-subtitle: clamp(1.1rem, 2vw, 1.3rem);
  --blog-card-title: 1.2rem;
  --blog-small-size: 0.875rem;
  --blog-title-tracking: -0.015em;
  --blog-title-leading: 1.35;
  --blog-border-width: 1px;
  --blog-rule-width: 0.25rem;
  --blog-lift: -2px;
  --blog-meta-min: 10rem;
  --blog-touch: 2.75rem;
  --blog-focus-offset: 0.2rem;
  --blog-cloud-size: 35rem;
  --blog-cloud-blur: 2rem;
  --blog-section-gap: 2.5rem;
  --blog-code-tab: 2;
  --blog-float-layer: 30;
  --blog-table-min: 36rem;
  --blog-clear: transparent;
}

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

.blog-index *,
.blog-article * {
  box-sizing: border-box;
}

.blog-index h1,
.blog-index h2,
.blog-index h3,
.article-hero h1,
.reading-wrap h1,
.reading-wrap h2,
.reading-wrap h3,
.article-hero h2,
#related-posts h2,
#related-posts h3 {
  display: block;
  font-family: var(--font-display);
  letter-spacing: var(--blog-title-tracking);
  line-height: var(--blog-title-leading);
  text-wrap: pretty;
  overflow-wrap: anywhere;
}

.blog-index h1,
.article-hero h1 {
  font-weight: var(--weight-display);
}

.blog-index a:focus-visible,
.blog-index button:focus-visible,
.reading-wrap a:focus-visible,
.reading-wrap button:focus-visible,
.article-hero a:focus-visible,
.float-cta:focus-visible {
  outline: var(--focus-width) solid var(--accent-dark);
  outline-offset: var(--blog-focus-offset);
}

.blog-skip {
  position: fixed;
  inset-block-start: var(--space-3);
  inset-inline-start: var(--space-3);
  z-index: var(--blog-float-layer);
  padding: var(--space-3) var(--space-4);
  border-radius: var(--r-pill);
  color: var(--on-ink);
  background: var(--ink);
  transform: translateY(calc(-100% - var(--space-5)));
}

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

.blog-list-hero {
  position: relative;
  isolation: isolate;
  overflow: hidden;
  padding-block: var(--space-8) var(--space-7);
  background: linear-gradient(var(--sky-top), var(--sky-mid), var(--bg));
}

.blog-list-hero::before,
.blog-list-hero::after {
  content: "";
  position: absolute;
  z-index: -1;
  width: var(--blog-cloud-size);
  height: var(--blog-cloud-size);
  border-radius: var(--r-round);
  background: radial-gradient(ellipse, var(--cloud), var(--cloud-clear) 70%);
  filter: blur(var(--blog-cloud-blur));
  pointer-events: none;
}

.blog-list-hero::before {
  inset-inline-start: 0;
  inset-block-end: 0;
}

.blog-list-hero::after {
  inset-inline-end: 0;
  inset-block-start: 0;
}

.blog-eyebrow {
  margin: 0 0 var(--space-3);
  color: var(--text-muted);
  font-size: var(--blog-small-size);
  font-weight: var(--weight-semibold);
}

.blog-list-hero h1 {
  max-width: var(--blog-column);
  margin: 0;
  font-size: var(--blog-list-title);
}

.blog-list-hero__summary {
  max-width: var(--blog-column);
  margin-block: var(--space-4);
  font-size: var(--size-lead);
  line-height: var(--blog-body-leading);
  color: var(--text-muted);
}

.blog-hero-notes,
.blog-promo-actions {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: var(--space-3);
}

.blog-library {
  padding-block: var(--space-6);
}

.blog-library__heading {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: var(--space-3) var(--space-5);
}

.blog-library__heading h2,
.blog-list-promo h2 {
  margin: 0;
  font-size: var(--blog-section-title);
}

.blog-library__heading p {
  font-size: var(--blog-small-size);
}

.blog-filters {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
  margin-block: var(--space-4) var(--space-6);
}

.blog-filters button {
  min-height: var(--blog-touch);
  padding: var(--space-2) var(--space-4);
  border: var(--blog-border-width) solid var(--blog-clear);
  border-radius: var(--r-pill);
  background: var(--bg-panel-2);
  color: var(--text);
  font-family: var(--font-body);
  font-size: var(--blog-small-size);
  font-weight: var(--weight-semibold);
  cursor: pointer;
  transition: background-color var(--duration) var(--ease), border-color var(--duration) var(--ease);
}

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

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

.blog-post-grid,
.related-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: var(--space-5);
}

.blog-post-grid > *,
.related-grid > * {
  min-width: 0;
}

.article-card,
.related-card {
  position: relative;
  overflow: hidden;
  margin: 0;
  border: var(--blog-border-width) solid var(--border);
  border-radius: var(--r-lg);
  background: var(--bg-panel);
  box-shadow: var(--shadow-panel);
  transition: transform var(--duration) var(--ease), border-color var(--duration) var(--ease);
}

.article-card::before,
.related-card::before {
  content: "";
  display: block;
  height: var(--space-2);
  background: linear-gradient(90deg, var(--candy-peach-1), var(--candy-peach-2));
}

.article-card:nth-child(3n + 2)::before,
.related-card:nth-child(3n + 2)::before {
  background: linear-gradient(90deg, var(--candy-mint-1), var(--candy-mint-2));
}

.article-card:nth-child(3n)::before,
.related-card:nth-child(3n)::before {
  background: linear-gradient(90deg, var(--candy-sky-1), var(--candy-sky-2));
}

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

.article-card__body {
  display: flex;
  flex-direction: column;
  flex: 1;
  padding: var(--space-5);
}

.article-card__meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: var(--space-2) var(--space-3);
  font-size: var(--blog-small-size);
  color: var(--text-muted);
}

.article-card__meta .tag,
.article-meta .tag {
  max-width: 100%;
  overflow-wrap: anywhere;
}

.article-card h3,
.related-card h3 {
  margin-block: var(--space-4) var(--space-3);
  font-size: var(--blog-card-title);
}

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

.article-card h3 a:hover,
.related-card h3 a:hover {
  text-decoration: underline;
  text-underline-offset: var(--blog-focus-offset);
}

.article-card__summary,
.related-card p {
  margin: 0 0 var(--space-4);
  font-size: var(--blog-body-size);
  line-height: var(--blog-body-leading);
  color: var(--text-muted);
}

.article-card__read {
  align-self: flex-start;
  margin-block-start: auto;
  padding-block: var(--space-2);
  color: var(--text);
  font-size: var(--blog-small-size);
  font-weight: var(--weight-bold);
  text-underline-offset: var(--blog-focus-offset);
}

.article-card:hover,
.article-card:focus-within,
.related-card:hover,
.related-card:focus-within {
  transform: translateY(var(--blog-lift));
  border-color: var(--text-muted);
}

.blog-empty {
  grid-column: 1 / -1;
  padding: var(--space-6);
  border: var(--blog-border-width) dashed var(--border);
  border-radius: var(--r-lg);
  background: var(--bg-panel);
  line-height: var(--blog-body-leading);
}

.blog-empty h3,
.blog-empty h2 {
  margin-block-start: 0;
}

.blog-list-promo {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: var(--space-5);
  padding-block: var(--space-6);
  margin-block: var(--space-3) var(--space-7);
  border-block: var(--blog-border-width) solid var(--border);
}

.blog-list-promo > div:first-child {
  flex: 1 1 var(--blog-meta-min);
  min-width: 0;
}

.blog-list-promo p {
  margin-block-end: 0;
  line-height: var(--blog-body-leading);
  color: var(--text-muted);
}

/* 所有文章纵向区域使用相同的外盒、内衬和阅读列宽。 */
.reading-wrap,
.article-hero,
.breadcrumbs,
.breadcrumb,
.article-breadcrumbs {
  box-sizing: border-box;
  width: 100%;
  max-width: calc(var(--blog-column) + var(--blog-gutter) + var(--blog-gutter));
  padding-inline: var(--blog-gutter);
  margin-inline: auto;
  min-width: 0;
}

.reading-wrap .reading-wrap,
.reading-wrap .breadcrumbs,
.reading-wrap .breadcrumb,
.reading-wrap .article-breadcrumbs {
  max-width: 100%;
  padding-inline: 0;
}

.breadcrumbs,
.breadcrumb,
.article-breadcrumbs {
  padding-block: var(--space-5) var(--space-4);
  margin-block-start: max(1.2rem, var(--space-4));
  color: var(--text-muted);
  font-size: var(--blog-small-size);
  line-height: var(--blog-body-leading);
  overflow-wrap: anywhere;
}

.breadcrumbs ol,
.breadcrumb ol,
.article-breadcrumbs ol {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: var(--space-2);
  margin: 0;
  padding: 0;
  list-style: none;
}

.breadcrumbs li + li::before,
.breadcrumb li + li::before,
.article-breadcrumbs li + li::before {
  content: "›";
  margin-inline-end: var(--space-2);
  color: var(--text-muted);
}

.breadcrumbs a,
.breadcrumb a,
.article-breadcrumbs a {
  color: inherit;
  text-underline-offset: var(--blog-focus-offset);
}

/* split-meta：主文案占三份，右侧元信息占一份。 */
.article-hero {
  position: relative;
  isolation: isolate;
  display: grid;
  grid-template-columns: minmax(0, 3fr) minmax(var(--blog-meta-min), 1fr);
  align-items: start;
  gap: max(2rem, var(--space-6));
  padding-block: var(--space-6);
  margin-block-end: var(--space-5);
}

.article-hero::before {
  content: "";
  position: absolute;
  z-index: -1;
  inset: 0;
  border-radius: var(--r-xl);
  background:
    radial-gradient(ellipse at 85% 10%, var(--cloud), var(--cloud-clear) 65%),
    linear-gradient(160deg, var(--sky-top), var(--sky-mid), var(--bg));
  box-shadow: inset 0 var(--blog-border-width) 0 var(--hi-line);
  pointer-events: none;
}

.article-hero__main,
.article-hero__content,
.article-hero__text {
  min-width: 0;
  grid-column: 1;
  grid-row: 1;
}

.article-hero h1 {
  margin: 0 0 var(--space-4);
  color: var(--text);
  font-size: var(--blog-article-title);
}

.article-hero__summary,
.article-summary,
.article-hero__main > p,
.article-hero__content > p,
.article-hero__text > p {
  margin: 0;
  font-size: var(--blog-body-size);
  line-height: var(--blog-body-leading);
  color: var(--text-muted);
}

.article-meta,
.article-hero__meta {
  grid-column: 2;
  grid-row: 1;
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  justify-content: flex-start;
  gap: var(--space-3);
  min-width: 0;
  padding: var(--space-4);
  border: var(--blog-border-width) solid var(--border);
  border-radius: var(--r-md);
  background: var(--bg-panel);
  box-shadow: var(--shadow-panel);
  color: var(--text-muted);
  font-size: var(--blog-small-size);
  line-height: var(--blog-body-leading);
  overflow-wrap: anywhere;
}

.article-meta > *,
.article-hero__meta > * {
  max-width: 100%;
  margin: 0;
}

.article-meta time,
.article-meta .read-time,
.article-meta .article-readtime,
.article-hero__meta time,
.article-hero__meta .read-time,
.article-hero__meta .article-readtime {
  padding: var(--space-1) var(--space-2);
  border: var(--blog-border-width) solid var(--border);
  border-radius: var(--r-pill);
}

.article-meta .tag,
.article-hero__meta .tag {
  padding: var(--space-1) var(--space-3);
  border-radius: var(--r-pill);
  background: var(--ink);
  color: var(--on-ink);
}

.reading-wrap .prose,
.prose[data-article-body] {
  width: 100%;
  max-width: none;
  margin-inline: auto;
  color: var(--text);
  font-family: var(--font-body);
  font-size: var(--blog-body-size);
  line-height: var(--blog-body-leading);
  overflow-wrap: anywhere;
  counter-reset: blog-section;
}

.prose[data-article-body] h2,
.reading-wrap .prose h2 {
  position: relative;
  display: block;
  margin-block: var(--blog-section-gap) var(--space-4);
  padding-block-start: var(--space-3);
  font-size: var(--blog-section-title);
  font-weight: var(--weight-heavy);
  scroll-margin-top: var(--anchor-offset);
}

.prose[data-article-body] h2::before,
.reading-wrap .prose h2::before {
  content: "";
  position: absolute;
  inset-block-start: 0;
  inset-inline-start: 0;
  width: var(--space-7);
  height: var(--blog-rule-width);
  border-radius: var(--r-pill);
  background: linear-gradient(90deg, var(--text), var(--candy-peach-2));
}

.prose[data-article-body] > h2:first-child,
.prose[data-article-body] > section:first-child > h2:first-child,
.reading-wrap .prose > h2:first-child,
.reading-wrap .prose > section:first-child > h2:first-child {
  margin-block-start: var(--space-3);
}

.prose[data-article-body] h3,
.reading-wrap .prose h3 {
  display: block;
  margin-block: var(--space-6) var(--space-3);
  font-size: var(--blog-subtitle);
  font-weight: var(--weight-bold);
}

.prose[data-article-body] p,
.reading-wrap .prose p {
  margin-block: 0 var(--space-4);
}

.prose[data-article-body] ul,
.prose[data-article-body] ol,
.reading-wrap .prose ul,
.reading-wrap .prose ol {
  padding-inline-start: var(--space-5);
  margin-block: var(--space-3) var(--space-5);
}

.prose[data-article-body] li,
.reading-wrap .prose li {
  margin-block: var(--space-2);
}

.prose[data-article-body] a,
.reading-wrap .prose a {
  color: var(--text);
  text-decoration-thickness: var(--blog-border-width);
  text-underline-offset: var(--blog-focus-offset);
}

.prose[data-article-body] a:hover,
.reading-wrap .prose a:hover {
  text-decoration-thickness: var(--blog-rule-width);
}

.prose[data-article-body] img,
.reading-wrap .prose img,
.prose[data-article-body] svg {
  max-width: 100%;
  height: auto;
}

.prose[data-article-body] blockquote,
.reading-wrap .prose blockquote {
  margin: var(--space-5) 0;
  padding: var(--space-4) var(--space-5);
  border-inline-start: var(--blog-rule-width) solid var(--text-muted);
  border-radius: var(--r-sm);
  background: var(--bg-panel-2);
  color: var(--text-muted);
}

.prose[data-article-body] blockquote > :last-child,
.reading-wrap .prose blockquote > :last-child {
  margin-block-end: 0;
}

.prose[data-article-body] .table-scroll,
.reading-wrap .prose .table-scroll {
  max-width: 100%;
  margin-block: var(--space-5);
  overflow-x: auto;
  border: var(--blog-border-width) solid var(--border);
  border-radius: var(--r-md);
  overscroll-behavior-inline: contain;
}

.prose[data-article-body] table,
.reading-wrap .prose table {
  width: 100%;
  max-width: 100%;
  margin-block: var(--space-4);
  border-collapse: collapse;
  font-size: var(--blog-small-size);
  line-height: var(--blog-body-leading);
}

.prose[data-article-body] caption,
.reading-wrap .prose caption {
  padding: var(--space-3);
  text-align: start;
  color: var(--text-muted);
  font-weight: var(--weight-semibold);
}

.prose[data-article-body] th,
.prose[data-article-body] td,
.reading-wrap .prose th,
.reading-wrap .prose td {
  padding: var(--space-3) var(--space-4);
  border-block-end: var(--blog-border-width) solid var(--border);
  text-align: start;
  vertical-align: top;
}

.prose[data-article-body] thead th,
.reading-wrap .prose thead th {
  background: var(--ink);
  color: var(--on-ink);
  font-weight: var(--weight-bold);
}

.prose[data-article-body] tbody tr:nth-child(odd),
.reading-wrap .prose tbody tr:nth-child(odd) {
  background: var(--bg-panel);
}

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

.prose[data-article-body] tbody tr:hover,
.reading-wrap .prose tbody tr:hover {
  background: color-mix(in srgb, var(--candy-peach-1) 60%, var(--bg-panel));
}

.prose[data-article-body] code,
.reading-wrap .prose code {
  padding: var(--space-1) var(--space-2);
  border-radius: var(--r-xs);
  background: var(--bg-panel-2);
  color: var(--text);
  font-family: var(--font-mono);
  font-size: var(--blog-small-size);
  overflow-wrap: anywhere;
}

.prose[data-article-body] pre,
.reading-wrap .prose pre {
  position: relative;
  max-width: 100%;
  overflow-x: auto;
  margin-block: var(--space-5);
  padding: var(--space-7) var(--space-5) var(--space-5);
  border-radius: var(--r-md);
  background: var(--ink);
  color: var(--on-ink);
  box-shadow: var(--shadow-panel);
  tab-size: var(--blog-code-tab);
  overscroll-behavior-inline: contain;
}

.prose[data-article-body] pre::before,
.reading-wrap .prose pre::before {
  content: "";
  position: absolute;
  inset-block-start: var(--space-4);
  inset-inline-start: var(--space-5);
  width: var(--space-2);
  height: var(--space-2);
  border-radius: var(--r-round);
  background: var(--error);
  box-shadow: var(--space-4) 0 0 var(--warn), var(--space-6) 0 0 var(--success);
}

.prose[data-article-body] pre code,
.reading-wrap .prose pre code {
  display: block;
  padding: 0;
  border-radius: 0;
  background: var(--blog-clear);
  color: var(--on-ink);
  white-space: pre;
  overflow-wrap: normal;
  word-break: normal;
}

.callout,
.verdict {
  position: relative;
  margin-block: var(--space-5);
  padding: var(--space-4) var(--space-5);
  border: var(--blog-border-width) solid var(--border);
  border-inline-start: var(--blog-rule-width) solid var(--text-muted);
  border-radius: var(--r-md);
  background: var(--bg-panel-2);
  color: var(--text);
  line-height: var(--blog-body-leading);
}

.callout {
  padding-inline-start: calc(var(--space-5) + var(--space-6));
}

.callout::before {
  content: "i";
  position: absolute;
  inset-inline-start: var(--space-4);
  inset-block-start: var(--space-4);
  width: var(--space-5);
  height: var(--space-5);
  border: var(--blog-border-width) solid currentColor;
  border-radius: var(--r-round);
  color: var(--text-muted);
  font-family: var(--font-mono);
  font-size: var(--blog-small-size);
  font-weight: var(--weight-bold);
  line-height: var(--space-5);
  text-align: center;
}

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

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

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

.callout--success::before,
.callout.success::before {
  color: var(--text);
}

.verdict {
  border-inline-start-color: var(--accent);
  background: color-mix(in srgb, var(--accent) 7%, var(--bg-panel));
}

.verdict > strong:first-child,
.verdict p > strong:first-child {
  font-weight: var(--weight-heavy);
}

.callout > :last-child,
.verdict > :last-child {
  margin-block-end: 0;
}

.stat-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(min(100%, var(--blog-meta-min)), 1fr));
  gap: var(--space-4);
  margin-block: var(--space-5);
}

.stat-card {
  min-width: 0;
  padding: var(--space-5);
  border-radius: var(--r-lg);
  background: linear-gradient(150deg, var(--candy-peach-1), var(--candy-peach-2));
  color: var(--text);
  box-shadow: var(--shadow-panel);
}

.stat-card:nth-child(even) {
  background: linear-gradient(150deg, var(--candy-mint-1), var(--candy-mint-2));
}

.stat-card:nth-child(3n) {
  background: linear-gradient(150deg, var(--candy-sky-1), var(--candy-sky-2));
}

.stat-num {
  display: block;
  margin-block-end: var(--space-2);
  font-family: var(--font-mono);
  font-size: var(--blog-section-title);
  font-weight: var(--weight-bold);
  line-height: var(--blog-title-leading);
  overflow-wrap: anywhere;
}

.stat-label {
  display: block;
  font-size: var(--blog-small-size);
  line-height: var(--blog-body-leading);
}

.prose[data-article-body] .check-list,
.reading-wrap .prose .check-list {
  padding: 0;
  list-style: none;
}

.check-list li {
  padding: var(--space-3) var(--space-4);
  border: var(--blog-border-width) solid var(--border);
  border-radius: var(--r-md);
  background: var(--bg-panel);
}

.promo-block {
  position: relative;
  isolation: isolate;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: var(--space-5);
  margin-block: var(--space-6);
  padding: var(--space-6);
  overflow: hidden;
  border: var(--blog-border-width) solid var(--border);
  border-radius: var(--r-xl);
  background: linear-gradient(130deg, var(--candy-peach-1), var(--sky-mid), var(--candy-mint-1));
  color: var(--text);
  box-shadow: var(--shadow-panel);
}

.promo-block::before {
  content: "";
  position: absolute;
  z-index: -1;
  inset: var(--space-2);
  border: var(--blog-border-width) solid var(--hi-line);
  border-radius: var(--r-lg);
  pointer-events: none;
}

.promo-block > div:first-child {
  flex: 1 1 var(--blog-meta-min);
  min-width: 0;
}

.promo-block h2 {
  margin-block: 0 var(--space-3);
  font-size: var(--blog-section-title);
}

.promo-block p {
  margin-block: 0;
  color: var(--text);
  font-size: var(--blog-body-size);
  line-height: var(--blog-body-leading);
}

.promo-block .btn,
.prose[data-article-body] .promo-block .btn {
  flex-shrink: 0;
  border: var(--blog-border-width) solid var(--white);
  border-radius: var(--r-pill);
  background: var(--white);
  color: var(--ink);
  text-decoration: none;
}

.promo-block .btn--line,
.prose[data-article-body] .promo-block .btn--line {
  border-color: var(--ink);
  background: var(--blog-clear);
  color: var(--ink);
}

.promo-block .btn:hover {
  background: var(--bg-panel-2);
  border-color: var(--text-muted);
}

#related-posts {
  padding-block: var(--space-5) var(--space-6);
}

#post-nav {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: var(--space-4);
  padding-block: var(--space-4);
}

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

#related-posts .related-heading {
  margin-block: 0 var(--space-5);
  font-size: var(--blog-section-title);
}

.related-card {
  padding: 0 var(--space-4) var(--space-4);
}

.related-card::before {
  margin-inline: calc(0px - var(--space-4));
}

.related-card .article-card__meta {
  margin-block-start: var(--space-4);
}

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

.post-nav-card {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
  min-width: 0;
  padding: var(--space-5);
  border: var(--blog-border-width) solid var(--border);
  border-radius: var(--r-lg);
  background: var(--bg-panel);
  color: var(--text);
  text-decoration: none;
  transition: border-color var(--duration) var(--ease), transform var(--duration) var(--ease);
}

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

.post-nav-card__label,
.post-nav-card time {
  color: var(--text-muted);
  font-size: var(--blog-small-size);
}

.post-nav-card__title {
  font-family: var(--font-display);
  font-size: var(--blog-body-size);
  font-weight: var(--weight-bold);
  line-height: var(--blog-body-leading);
  overflow-wrap: anywhere;
}

.post-nav-card:hover,
.post-nav-card:focus-visible {
  border-color: var(--text-muted);
  transform: translateY(var(--blog-lift));
}

/* 仅提供文章落地页所需的组件样式；列表页不挂载悬浮入口。 */
.float-cta {
  position: fixed;
  z-index: var(--blog-float-layer);
  inset-inline-end: max(var(--space-5), env(safe-area-inset-right));
  inset-block-end: max(var(--space-5), env(safe-area-inset-bottom));
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  max-width: calc(100% - var(--blog-gutter) - var(--blog-gutter));
  min-height: var(--blog-touch);
  padding: var(--space-3) var(--space-5);
  border: var(--blog-border-width) solid var(--hi-line);
  border-radius: var(--r-pill);
  background: var(--ink);
  color: var(--on-ink);
  font-family: var(--font-body);
  font-size: var(--blog-small-size);
  font-weight: var(--weight-bold);
  line-height: var(--blog-title-leading);
  text-decoration: none;
  box-shadow: var(--shadow-float);
}

.float-cta svg {
  flex: 0 0 auto;
  width: var(--space-5);
  height: var(--space-5);
  fill: none;
  stroke: currentColor;
}

.float-cta:hover {
  background: var(--text);
}

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

@media (max-width: 860px) {
  .prose[data-article-body] table,
  .reading-wrap .prose table {
    display: block;
    width: fit-content;
    max-width: 100%;
    overflow-x: auto;
    overscroll-behavior-inline: contain;
  }

  .prose[data-article-body] .table-scroll table,
  .reading-wrap .prose .table-scroll table {
    display: table;
    width: 100%;
    min-width: var(--blog-table-min);
    margin-block: 0;
  }

  .article-hero {
    grid-template-columns: minmax(0, 1fr);
    gap: var(--space-5);
  }

  .article-hero__main,
  .article-hero__content,
  .article-hero__text {
    grid-column: 1;
    grid-row: 2;
  }

  .article-meta,
  .article-hero__meta {
    grid-column: 1;
    grid-row: 1;
    flex-direction: row;
    flex-wrap: wrap;
    align-items: center;
    justify-content: flex-start;
    gap: var(--space-2);
    padding: var(--space-3);
  }
}

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

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

  .post-nav-card--next {
    grid-column: 1;
  }

  .blog-list-hero {
    padding-block: var(--space-6);
  }

  .blog-list-hero__summary {
    font-size: var(--blog-body-size);
  }

  .article-hero {
    padding-block: var(--space-5);
  }

  .promo-block {
    padding: var(--space-5);
  }

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

  .float-cta {
    position: sticky;
    inset-inline: auto;
    inset-block-end: max(var(--space-3), env(safe-area-inset-bottom));
    display: flex;
    width: fit-content;
    margin: var(--space-5) auto;
  }

  body:has(.float-cta) {
    padding-block-end: var(--space-5);
  }
}

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

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

/* fab-guard:start */
@supports (animation-timeline:scroll()){
  .float-cta{animation:fab-guard-in linear both;animation-timeline:scroll(root);animation-range:0 60vh}
}
@keyframes fab-guard-in{0%,40%{opacity:0;visibility:hidden}100%{opacity:1;visibility:visible}}
body:has(.float-cta) > footer:last-of-type{padding-bottom:calc(88px + env(safe-area-inset-bottom,0px))!important}
body:has(.float-cta):not(:has(> footer)){padding-bottom:calc(88px + env(safe-area-inset-bottom,0px))!important}
/* fab-guard:end */