.blog-column,
.article-breadcrumb,
.article-hero,
.reading-wrap,
.promo-block,
#related-posts,
#post-nav {
  box-sizing: border-box;
  width: min(100%, calc(56rem + (var(--gutter) * 2)));
  max-width: calc(56rem + (var(--gutter) * 2));
  margin-inline: auto;
  padding-inline: var(--gutter);
}

.blog-index-hero {
  position: relative;
  overflow: hidden;
  padding-block: clamp(4.5rem, 10vw, 7.5rem) clamp(3.5rem, 8vw, 6rem);
  text-align: center;
  background:
    radial-gradient(
      circle at top center,
      color-mix(in srgb, var(--color-accent) 8%, transparent),
      transparent 58%
    ),
    linear-gradient(
      to bottom,
      color-mix(in srgb, var(--color-surface) 76%, transparent),
      color-mix(in srgb, var(--color-accent) 5%, var(--color-paper))
    );
}

.blog-index-hero::before,
.blog-index-hero::after {
  position: absolute;
  content: "";
  pointer-events: none;
  border: 2px solid color-mix(in srgb, var(--color-line) 76%, transparent);
  border-radius: var(--radius-pill);
}

.blog-index-hero::before {
  width: 7rem;
  height: 2.5rem;
  top: 2rem;
  left: max(var(--gutter), 8vw);
  border-right-color: transparent;
  border-bottom-color: transparent;
  rotate: -8deg;
}

.blog-index-hero::after {
  width: 5rem;
  height: 1.8rem;
  right: max(var(--gutter), 9vw);
  bottom: 2.5rem;
  border-top-color: transparent;
  border-left-color: transparent;
  rotate: 7deg;
}

.blog-kicker,
.section-kicker,
.article-hero__kicker {
  margin: 0 0 1rem;
  color: var(--color-accent);
  font-family: var(--font-mono);
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

.blog-index-hero h1 {
  max-width: 48rem;
  margin: 0 auto;
  color: var(--color-ink);
  font-family: var(--font-display);
  font-size: clamp(2.25rem, 6vw, 3rem);
  font-weight: 800;
  line-height: 1.14;
  letter-spacing: -0.02em;
  text-wrap: pretty;
}

.blog-title-rule,
.article-hero__rule {
  display: block;
  width: 3.5rem;
  height: 0.18rem;
  margin: 1.45rem auto;
  border-radius: var(--radius-pill);
  background: var(--color-accent);
}

.blog-index-hero__summary {
  max-width: 42rem;
  margin: 0 auto;
  color: var(--color-muted);
  font-size: 1.05rem;
  line-height: 1.85;
}

.blog-fact-row {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 0.65rem;
  margin-top: 1.75rem;
}

.blog-fact-row span {
  padding: 0.55rem 0.9rem;
  color: var(--color-ink);
  border: 1px solid var(--color-line);
  border-radius: var(--radius-pill);
  background: color-mix(in srgb, var(--color-surface) 88%, transparent);
  font-family: var(--font-mono);
  font-size: 0.78rem;
}

.blog-catalog {
  padding-block: clamp(3.5rem, 8vw, 6.5rem);
}

.blog-catalog__heading {
  display: flex;
  align-items: end;
  justify-content: space-between;
  gap: 1.5rem;
  margin-bottom: 1.5rem;
}

.blog-catalog__heading h2 {
  margin: 0;
  color: var(--color-ink);
  font-family: var(--font-display);
  font-size: clamp(1.75rem, 4vw, 2.4rem);
  line-height: 1.2;
  letter-spacing: -0.02em;
  text-wrap: pretty;
}

.blog-result-count {
  margin: 0;
  color: var(--color-muted);
  font-family: var(--font-mono);
  font-size: 0.8rem;
}

.blog-filters {
  display: flex;
  flex-wrap: wrap;
  gap: 0.65rem;
  margin-bottom: 2rem;
  padding-bottom: 1.25rem;
  border-bottom: 1px solid var(--color-line);
}

.blog-filter {
  min-height: 2.55rem;
  padding: 0.55rem 1rem;
  color: var(--color-muted);
  border: 1px solid var(--color-line);
  border-radius: var(--radius-pill);
  background: var(--color-surface);
  font: inherit;
  font-size: 0.9rem;
  font-weight: 650;
  cursor: pointer;
  transition:
    color 180ms ease,
    border-color 180ms ease,
    background-color 180ms ease,
    transform 180ms ease;
}

.blog-filter:hover {
  color: var(--color-accent);
  border-color: var(--color-accent);
  transform: translateY(-1px);
}

.blog-filter:focus-visible {
  outline: 3px solid color-mix(in srgb, var(--color-accent) 28%, transparent);
  outline-offset: 2px;
}

.blog-filter.is-active {
  color: var(--color-surface);
  border-color: var(--color-accent);
  background: var(--color-accent);
}

.article-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1.25rem;
}

.article-card {
  position: relative;
  display: flex;
  min-width: 0;
  min-height: 20rem;
  flex-direction: column;
  overflow: hidden;
  padding: clamp(1.4rem, 3vw, 2rem);
  border: 1px solid var(--color-line);
  border-radius: var(--radius-card);
  background: var(--color-surface);
  box-shadow: var(--shadow-card);
  transition:
    border-color 180ms ease,
    box-shadow 180ms ease,
    transform 180ms ease;
}

.article-card::before,
.related-card::before {
  position: absolute;
  inset: 0 0 auto;
  height: 0.24rem;
  content: "";
  background: var(--color-accent);
  scale: 0 1;
  transform-origin: left center;
  transition: scale 180ms ease;
}

.article-card:hover {
  border-color: color-mix(in srgb, var(--color-accent) 55%, var(--color-line));
  box-shadow: var(--shadow-float);
  transform: translateY(-3px);
}

.article-card:hover::before,
.related-card:hover::before {
  scale: 1 1;
}

.article-card__meta,
.related-card__meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.7rem;
  margin-bottom: 1.2rem;
  color: var(--color-muted);
  font-family: var(--font-mono);
  font-size: 0.76rem;
}

.article-card__tag,
.related-card__meta span {
  padding: 0.35rem 0.65rem;
  color: var(--color-indigo);
  border-radius: var(--radius-pill);
  background: color-mix(in srgb, var(--color-indigo) 12%, var(--color-surface));
  font-weight: 700;
}

.article-card__title {
  margin: 0 0 1rem;
  color: var(--color-ink);
  font-family: var(--font-display);
  font-size: clamp(1.25rem, 2.5vw, 1.55rem);
  line-height: 1.45;
  letter-spacing: -0.015em;
  text-wrap: pretty;
}

.article-card__title a {
  color: inherit;
  text-decoration: none;
}

.article-card__summary {
  margin: 0 0 1.5rem;
  color: var(--color-muted);
  font-size: 0.96rem;
  line-height: 1.8;
}

.article-card__link {
  display: inline-flex;
  align-items: center;
  align-self: flex-start;
  gap: 0.4rem;
  margin-top: auto;
  color: var(--color-accent);
  font-weight: 750;
  text-decoration: none;
}

.article-card__link::after {
  content: "→";
  transition: transform 180ms ease;
}

.article-card__link:hover::after {
  transform: translateX(0.25rem);
}

.blog-empty-state {
  grid-column: 1 / -1;
  margin: 0;
  padding: 3rem 1.5rem;
  color: var(--color-muted);
  border: 1px dashed var(--color-line);
  border-radius: var(--radius-card);
  background: var(--color-surface);
  text-align: center;
}

/* 文章页单列刊头 */
.article-breadcrumb {
  margin-top: 1.5rem;
  padding-top: 0.5rem;
}

.article-breadcrumb ol {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin: 0;
  padding: 0;
  color: var(--color-muted);
  font-size: 0.84rem;
  list-style: none;
}

.article-breadcrumb li:not(:last-child)::after {
  margin-left: 0.5rem;
  color: var(--color-line);
  content: "/";
}

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

.article-breadcrumb a:hover {
  color: var(--color-accent);
}

.article-hero {
  position: relative;
  padding-top: clamp(3.5rem, 8vw, 6rem);
  padding-bottom: clamp(2.8rem, 6vw, 4.5rem);
  text-align: center;
}

.article-hero::before,
.article-hero::after {
  display: block;
  width: 2.3rem;
  height: 0.45rem;
  margin-inline: auto;
  content: "";
  border-top: 2px solid var(--color-line);
  border-bottom: 2px solid var(--color-line);
}

.article-hero::before {
  margin-bottom: 1.4rem;
}

.article-hero::after {
  margin-top: 1.6rem;
}

.article-hero__kicker {
  margin-bottom: 1.1rem;
}

.article-hero h1 {
  max-width: 56rem;
  margin: 0 auto;
  color: var(--color-ink);
  font-family: var(--font-display);
  font-size: clamp(2rem, 5vw, 2.6rem);
  font-weight: 800;
  line-height: 1.28;
  letter-spacing: -0.02em;
  text-wrap: pretty;
}

.article-hero__summary {
  max-width: 50rem;
  margin: 0 auto;
  color: var(--color-muted);
  font-size: 1.04rem;
  line-height: 1.85;
}

.article-hero__meta {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 0.6rem;
  margin: 1.5rem 0 0;
}

.article-hero__meta > * {
  padding: 0.42rem 0.75rem;
  color: var(--color-muted);
  border: 1px solid var(--color-line);
  border-radius: var(--radius-pill);
  background: var(--color-surface);
  font-family: var(--font-mono);
  font-size: 0.75rem;
}

.article-hero__meta .article-tag {
  color: var(--color-surface);
  border-color: var(--color-indigo);
  background: var(--color-indigo);
}

.reading-wrap {
  max-width: calc(56rem + (var(--gutter) * 2));
  width: min(100%, calc(56rem + (var(--gutter) * 2)));
  margin-inline: auto;
  padding-inline: var(--gutter);
}

.article-body,
.post-content,
article.prose {
  width: 100%;
  max-width: 56rem;
  margin-inline: auto;
  color: var(--color-ink);
  font-size: 1rem;
  line-height: 1.85;
  counter-reset: article-section;
}

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

.post-content p,
.article-body p,
article.prose p {
  margin-block: 0 1.35rem;
}

.post-content h2,
.article-body h2,
article.prose h2 {
  position: relative;
  margin: 3rem 0 1.15rem;
  padding-top: 0.9rem;
  color: var(--color-ink);
  border-top: 1px solid var(--color-line);
  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;
}

.post-content h2::before,
.article-body h2::before,
article.prose h2::before {
  display: inline-block;
  min-width: 2.2rem;
  margin-right: 0.55rem;
  color: var(--color-accent);
  font-family: var(--font-mono);
  font-size: 0.72em;
  content: counter(article-section, decimal-leading-zero);
}

.post-content h3,
.article-body h3,
article.prose h3 {
  margin: 2rem 0 0.8rem;
  color: var(--color-ink);
  font-family: var(--font-display);
  font-size: clamp(1.12rem, 2vw, 1.3rem);
  line-height: 1.5;
  letter-spacing: -0.01em;
  text-wrap: pretty;
}

.post-content a,
.article-body a,
article.prose a {
  color: var(--color-accent-deep);
  text-decoration-color: color-mix(in srgb, var(--color-accent) 40%, transparent);
  text-underline-offset: 0.2em;
}

.post-content ul,
.post-content ol,
.article-body ul,
.article-body ol,
article.prose ul,
article.prose ol {
  margin: 0 0 1.5rem;
  padding-left: 1.5rem;
}

.post-content li,
.article-body li,
article.prose li {
  margin-bottom: 0.55rem;
  padding-left: 0.25rem;
}

.post-content blockquote,
.article-body blockquote,
article.prose blockquote {
  margin: 1.8rem 0;
  padding: 1.25rem 1.4rem;
  color: var(--color-ink);
  border-left: 0.28rem solid var(--color-accent);
  border-radius: 0 var(--radius-card) var(--radius-card) 0;
  background: color-mix(in srgb, var(--color-accent) 7%, var(--color-surface));
}

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

.post-content pre,
.article-body pre,
article.prose pre {
  position: relative;
  max-width: 100%;
  overflow-x: auto;
  margin: 1.8rem 0;
  padding: 2.7rem 1.3rem 1.35rem;
  color: var(--color-surface);
  border: 1px solid color-mix(in srgb, var(--color-ink) 82%, var(--color-line));
  border-radius: var(--radius-card);
  background: var(--color-ink);
  box-shadow: var(--shadow-card);
}

.post-content pre::before,
.article-body pre::before,
article.prose pre::before {
  position: absolute;
  top: 1rem;
  left: 1.2rem;
  width: 0.65rem;
  height: 0.65rem;
  content: "";
  border-radius: var(--radius-pill);
  background: var(--color-error);
  box-shadow:
    1.05rem 0 0 var(--color-warning),
    2.1rem 0 0 var(--color-success);
}

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

.post-content :not(pre) > code,
.article-body :not(pre) > code,
article.prose :not(pre) > code {
  padding: 0.14rem 0.36rem;
  color: var(--color-accent-deep);
  border-radius: var(--radius-card);
  background: color-mix(in srgb, var(--color-accent) 9%, var(--color-surface));
}

.table-scroll,
.post-content > .data-table {
  max-width: 100%;
  overflow-x: auto;
  margin: 1.8rem 0;
  border: 1px solid var(--color-line);
  border-radius: var(--radius-card);
}

.post-content table,
.article-body table,
article.prose table {
  width: 100%;
  border-collapse: collapse;
  background: var(--color-surface);
  font-size: 0.92rem;
}

.post-content th,
.post-content td,
.article-body th,
.article-body td,
article.prose th,
article.prose td {
  min-width: 8.5rem;
  padding: 0.85rem 1rem;
  border-bottom: 1px solid var(--color-line);
  text-align: left;
  vertical-align: top;
}

.post-content thead th,
.article-body thead th,
article.prose thead th {
  color: var(--color-surface);
  border-color: color-mix(in srgb, var(--color-ink) 84%, var(--color-line));
  background: var(--color-ink);
  font-weight: 750;
}

.post-content tbody tr:nth-child(even),
.article-body tbody tr:nth-child(even),
article.prose tbody tr:nth-child(even) {
  background: color-mix(in srgb, var(--color-surface-warm) 48%, var(--color-surface));
}

.post-content tbody tr:hover,
.article-body tbody tr:hover,
article.prose tbody tr:hover {
  background: color-mix(in srgb, var(--color-accent) 7%, var(--color-surface));
}

/* 富文本组件 */
.stat-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(min(100%, 11rem), 1fr));
  gap: 0.9rem;
  margin: 1.8rem 0;
}

.stat-card {
  position: relative;
  overflow: hidden;
  padding: 1.25rem;
  border: 1px solid var(--color-line);
  border-radius: var(--radius-card);
  background: color-mix(in srgb, var(--color-surface-warm) 72%, var(--color-surface));
}

.stat-card::before {
  position: absolute;
  inset: 0 0 auto;
  height: 0.25rem;
  content: "";
  background: var(--color-accent);
}

.stat-card:nth-child(even) {
  background: color-mix(in srgb, var(--color-indigo) 8%, var(--color-surface));
}

.stat-card:nth-child(even)::before {
  background: var(--color-indigo);
}

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

.stat-num {
  display: block;
  margin-bottom: 0.35rem;
  color: var(--color-ink);
  font-family: var(--font-display);
  font-size: clamp(1.45rem, 3vw, 2rem);
  font-weight: 800;
  line-height: 1.2;
}

.stat-label {
  color: var(--color-muted);
  font-size: 0.86rem;
  line-height: 1.6;
}

.check-list {
  display: grid;
  gap: 0.65rem;
  margin: 1.7rem 0;
  padding: 0;
  list-style: none;
}

.check-list li {
  margin: 0;
  padding: 0.85rem 1rem;
  border: 1px solid var(--color-line);
  border-radius: var(--radius-card);
  background: var(--color-surface);
}

.verdict {
  margin: 1.8rem 0;
  padding: 1.15rem 1.3rem;
  border-left: 0.3rem solid var(--color-accent);
  border-radius: 0 var(--radius-card) var(--radius-card) 0;
  background: color-mix(in srgb, var(--color-accent) 8%, var(--color-surface));
}

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

.callout {
  position: relative;
  margin: 1.8rem 0;
  padding: 1.25rem 1.3rem 1.25rem 3.7rem;
  border: 1px solid var(--color-line);
  border-left: 0.3rem solid var(--color-indigo);
  border-radius: var(--radius-card);
  background: color-mix(in srgb, var(--color-indigo) 8%, var(--color-surface));
}

.callout::before {
  position: absolute;
  top: 1.15rem;
  left: 1.15rem;
  display: grid;
  width: 1.7rem;
  height: 1.7rem;
  place-items: center;
  color: var(--color-surface);
  border-radius: var(--radius-pill);
  background: var(--color-indigo);
  content: "i";
  font-family: var(--font-mono);
  font-size: 0.78rem;
  font-weight: 800;
}

.callout--warning {
  border-left-color: var(--color-warning);
  background: color-mix(in srgb, var(--color-warning) 10%, var(--color-surface));
}

.callout--warning::before {
  background: var(--color-warning);
}

.callout--success {
  border-left-color: var(--color-success);
  background: color-mix(in srgb, var(--color-success) 9%, var(--color-surface));
}

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

.callout__title {
  margin-bottom: 0.35rem;
  color: var(--color-ink);
  font-weight: 800;
}

/* 文末唯一推广块 */
.promo-block {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 2rem;
  overflow: hidden;
  margin-top: clamp(3rem, 7vw, 5rem);
  padding: clamp(1.6rem, 4vw, 2.4rem);
  color: var(--color-surface);
  border: 1px solid var(--color-accent-deep);
  border-radius: var(--radius-large);
  background:
    linear-gradient(
      130deg,
      var(--color-accent-deep),
      var(--color-accent)
    );
  box-shadow: var(--shadow-float);
}

.promo-block::before {
  position: absolute;
  width: 9rem;
  height: 4rem;
  right: 2rem;
  bottom: -1.7rem;
  content: "";
  border: 2px solid color-mix(in srgb, var(--color-surface) 34%, transparent);
  border-radius: var(--radius-pill);
  rotate: -7deg;
}

.promo-block__copy {
  position: relative;
  z-index: 1;
}

.promo-block h2 {
  margin: 0 0 0.6rem;
  color: var(--color-surface);
  font-family: var(--font-display);
  font-size: clamp(1.4rem, 3vw, 1.9rem);
  letter-spacing: -0.015em;
  text-wrap: pretty;
}

.promo-block p {
  margin: 0;
  color: var(--color-surface);
  line-height: 1.75;
}

.promo-block .btn {
  position: relative;
  z-index: 1;
  flex: 0 0 auto;
  color: var(--color-accent-deep);
  border-color: var(--color-surface);
  background: var(--color-surface);
}

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

/* 延伸阅读与翻页 */
#related-posts {
  padding-top: 3.5rem;
}

.related-posts__title {
  margin: 0 0 1.2rem;
  color: var(--color-ink);
  font-family: var(--font-display);
  font-size: clamp(1.35rem, 3vw, 1.6rem);
  letter-spacing: -0.015em;
  text-wrap: pretty;
}

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

.related-card {
  position: relative;
  min-width: 0;
  overflow: hidden;
  padding: 1.25rem;
  border: 1px solid var(--color-line);
  border-radius: var(--radius-card);
  background: var(--color-surface);
  box-shadow: var(--shadow-card);
  transition:
    border-color 180ms ease,
    transform 180ms ease;
}

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

.related-card h3 {
  margin: 0 0 0.7rem;
  color: var(--color-ink);
  font-family: var(--font-display);
  font-size: 1.05rem;
  line-height: 1.55;
  letter-spacing: -0.01em;
  text-wrap: pretty;
}

.related-card h3 a {
  color: inherit;
  text-decoration: none;
}

.related-card p {
  display: -webkit-box;
  overflow: hidden;
  margin: 0;
  color: var(--color-muted);
  font-size: 0.88rem;
  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: 1rem;
  padding-top: 1.5rem;
  padding-bottom: 3rem;
}

.post-nav__link {
  display: flex;
  min-width: 0;
  min-height: 7rem;
  flex-direction: column;
  justify-content: center;
  padding: 1.2rem;
  color: var(--color-ink);
  border: 1px solid var(--color-line);
  border-radius: var(--radius-card);
  background: var(--color-surface);
  text-decoration: none;
  transition:
    border-color 180ms ease,
    box-shadow 180ms ease,
    transform 180ms ease;
}

.post-nav__link:hover {
  border-color: var(--color-accent);
  box-shadow: var(--shadow-card);
  transform: translateY(-2px);
}

.post-nav__link--next {
  grid-column: 2;
  text-align: right;
}

.post-nav__eyebrow {
  margin-bottom: 0.45rem;
  color: var(--color-accent);
  font-family: var(--font-mono);
  font-size: 0.76rem;
  font-weight: 750;
}

.post-nav__link strong {
  font-size: 0.98rem;
  line-height: 1.55;
}

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

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

@media (max-width: 720px) {
  .article-grid {
    grid-template-columns: 1fr;
  }

  .article-card {
    min-height: auto;
  }

  .blog-catalog__heading {
    align-items: flex-start;
    flex-direction: column;
    gap: 0.6rem;
  }

  .promo-block {
    align-items: flex-start;
    flex-direction: column;
  }
}

@media (max-width: 640px) {
  .blog-index-hero {
    padding-block: 3.8rem;
  }

  .blog-index-hero::before,
  .blog-index-hero::after {
    display: none;
  }

  .blog-index-hero h1 {
    font-size: clamp(2rem, 10vw, 2.55rem);
  }

  .article-hero {
    padding-top: 2.8rem;
    padding-bottom: 2.5rem;
  }

  .article-hero h1 {
    font-size: clamp(1.85rem, 9vw, 2.3rem);
  }

  .article-hero__meta {
    gap: 0.45rem;
  }

  .post-content h2,
  .article-body h2,
  article.prose h2 {
    margin-top: 2.4rem;
  }

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

  .post-nav__link--next {
    grid-column: 1;
  }
}

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

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