/* 文章与刊头共用一条阅读列；底色、字体和色彩均继承站点令牌。 */
.blog-home,
.article-page {
  background: var(--bg);
  color: var(--text);
}

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

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

.blog-crumbs,
.article-crumbs,
.breadcrumbs {
  padding-top: 1.5rem;
  margin-top: 0.25rem;
  font-size: 0.875rem;
  line-height: 1.7;
  color: var(--muted);
}

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

.blog-crumbs a,
.article-crumbs a,
.breadcrumbs a {
  color: var(--accent-dark);
  text-decoration: none;
}

.blog-crumbs a:hover,
.article-crumbs a:hover,
.breadcrumbs a:hover {
  text-decoration: underline;
}

.blog-crumbs span[aria-hidden],
.article-crumbs span[aria-hidden],
.breadcrumbs span[aria-hidden] {
  margin-inline: 0.5rem;
}

.blog-intro,
.article-hero {
  position: relative;
  text-align: center;
  background: transparent;
  border: 0;
}

.blog-intro {
  padding-block: clamp(3.5rem, 7vw, 6rem) clamp(3rem, 6vw, 5rem);
}

.blog-kicker,
.article-kicker {
  margin: 0 0 1.2rem;
  font: 600 0.76rem/1.5 var(--font-mono);
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--accent-dark);
}

.blog-intro h1,
.article-hero h1 {
  font-family: var(--font-display);
  font-weight: 700;
  line-height: 1.2;
  letter-spacing: -0.015em;
  text-wrap: pretty;
  overflow-wrap: anywhere;
}

.blog-intro h1 {
  max-width: 48rem;
  margin: 0 auto;
  font-size: clamp(2rem, 5vw, 3rem);
}

.blog-intro h1::after,
.article-hero h1::after {
  content: "";
  display: block;
  width: 3.5em;
  max-width: 5rem;
  height: 0.2rem;
  margin: 1.3rem auto 0;
  border-radius: var(--r-pill);
  background: var(--accent);
}

.blog-intro > p:last-child,
.article-hero > p:last-child,
.article-summary {
  max-width: 43rem;
  margin: 1.35rem auto 0;
  font-size: 1.0625rem;
  line-height: 1.8;
  color: var(--muted);
  text-align: center;
}

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

.blog-directory > h2 {
  margin: 0 0 1.2rem;
  font: 700 clamp(1.35rem, 3vw, 1.6rem)/1.4 var(--font-display);
  letter-spacing: -0.01em;
  text-wrap: pretty;
}

.blog-filters {
  display: flex;
  flex-wrap: wrap;
  gap: 0.55rem;
  margin-bottom: 1.6rem;
}

.blog-filters button {
  min-height: 2.65rem;
  padding: 0.5rem 0.9rem;
  border: 1px solid var(--border);
  border-radius: var(--r-pill);
  background: var(--panel);
  color: var(--muted);
  font: 500 0.9rem/1.4 var(--font-body);
  cursor: pointer;
  transition: border-color 180ms ease, background-color 180ms ease, color 180ms ease;
}

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

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

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

.article-card,
.related-card,
.post-nav-link {
  position: relative;
  min-width: 0;
  border: 1px solid var(--border);
  border-radius: var(--r-sm);
  background: var(--panel);
  box-shadow: var(--shadow-panel);
  transition: border-color 180ms ease, transform 180ms ease, box-shadow 180ms ease;
}

.article-card:hover,
.related-card:hover,
.post-nav-link:hover {
  border-color: var(--accent);
  transform: translateY(-3px);
  box-shadow: var(--shadow-soft);
}

.article-card {
  display: flex;
  flex-direction: column;
  gap: 0.9rem;
  padding: clamp(1.25rem, 3vw, 1.8rem);
}

.article-card-meta,
.related-meta,
.article-meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.6rem;
  font: 500 0.78rem/1.5 var(--font-mono);
  color: var(--muted);
}

.article-card .tag,
.related-card .tag,
.article-meta .tag {
  display: inline-block;
  padding: 0.22rem 0.6rem;
  border-radius: var(--r-xs);
  background: var(--accent);
  color: var(--on-accent);
  font: 600 0.78rem/1.45 var(--font-body);
}

.article-card h3,
.related-card h3 {
  margin: 0;
  font: 700 1.22rem/1.5 var(--font-display);
  letter-spacing: -0.01em;
  text-wrap: pretty;
  overflow-wrap: anywhere;
}

.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);
}

.article-card p,
.related-card p {
  margin: 0;
  font-size: 0.94rem;
  line-height: 1.75;
  color: var(--muted);
}

.article-card-read {
  width: fit-content;
  margin-top: auto;
  color: var(--accent-dark);
  font-size: 0.9rem;
  font-weight: 700;
  text-decoration: none;
}

.article-card-read::after {
  content: " →";
}

.article-card-read:hover {
  text-decoration: underline;
}

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

/* 对称刊头：没有底色或外框，短线与等宽刊名充当机盒刊物的图章。 */
.article-hero {
  padding-block: clamp(2.5rem, 5vw, 4rem) 2.5rem;
}

.article-hero h1 {
  margin: 0 auto;
  font-size: clamp(1.85rem, 4vw, 2.6rem);
}

.article-hero .article-meta,
.article-hero .hero-meta {
  justify-content: center;
  gap: 0.6rem;
  margin: 0 auto 1.3rem;
  text-align: center;
}

.article-hero .article-meta time,
.article-hero .article-meta .read-time,
.article-hero .hero-meta time,
.article-hero .hero-meta .read-time {
  padding: 0.22rem 0.6rem;
  border: 1px solid var(--border);
  border-radius: var(--r-pill);
}

/* 显式覆盖基础样式的阅读宽度，使正文与刊头左缘一致。 */
.reading-wrap {
  width: min(100%, calc(56rem + 2 * var(--gutter)));
  max-width: calc(56rem + 2 * var(--gutter));
  padding-inline: var(--gutter);
  margin-inline: auto;
}

.prose {
  font: 400 1rem/1.9 var(--font-body);
  color: var(--text);
  overflow-wrap: break-word;
}

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

.prose h2,
.prose h3 {
  font-family: var(--font-display);
  font-weight: 700;
  letter-spacing: -0.01em;
  line-height: 1.42;
  text-wrap: pretty;
  overflow-wrap: anywhere;
}

.prose {
  counter-reset: blog-section;
}

.prose h2 {
  margin: 2.65rem 0 1rem;
  font-size: clamp(1.32rem, 2.5vw, 1.6rem);
  counter-increment: blog-section;
}

.prose h2::before {
  content: counter(blog-section, decimal-leading-zero) " / ";
  color: var(--accent-dark);
  font: 600 0.78em/1 var(--font-mono);
}

.prose h3 {
  margin: 2rem 0 0.7rem;
  font-size: clamp(1.14rem, 2vw, 1.3rem);
}

.prose p,
.prose ul,
.prose ol,
.prose blockquote {
  margin-block: 0 1.3rem;
}

.prose ul,
.prose ol {
  padding-left: 1.5rem;
}

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

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

.prose blockquote {
  padding: 1rem 1.35rem;
  border-left: 3px solid var(--accent);
  background: var(--panel-2);
  border-radius: 0 var(--r-sm) var(--r-sm) 0;
  color: var(--muted);
}

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

.prose table,
.prose .data-table {
  width: 100%;
  min-width: 36rem;
  border-collapse: collapse;
  font-size: 0.9rem;
  line-height: 1.6;
}

.prose th,
.prose td {
  padding: 0.75rem 0.9rem;
  border-bottom: 1px solid var(--border);
  text-align: left;
  vertical-align: top;
}

.prose thead,
.prose th {
  background: var(--accent-dark);
  color: var(--on-accent);
}

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

.prose tbody tr:hover {
  background: color-mix(in srgb, var(--accent) 9%, var(--panel));
}

.prose pre {
  position: relative;
  max-width: 100%;
  margin: 1.6rem 0;
  padding: 2.8rem 1.2rem 1.2rem;
  overflow-x: auto;
  border-radius: var(--r-sm);
  background: var(--text);
  color: var(--panel);
  font: 0.86rem/1.75 var(--font-mono);
}

.prose pre::before {
  content: "";
  position: absolute;
  top: 1rem;
  left: 1.2rem;
  width: 0.55rem;
  height: 0.55rem;
  border-radius: var(--r-pill);
  background: var(--error);
  box-shadow: 0.95rem 0 var(--warn), 1.9rem 0 var(--success);
}

.prose pre code {
  padding: 0;
  background: none;
  color: inherit;
  font: inherit;
}

.prose :not(pre) > code {
  padding: 0.12rem 0.3rem;
  border-radius: var(--r-xs);
  background: var(--panel-2);
  font: 0.88em var(--font-mono);
}

.prose .callout,
.prose .verdict {
  position: relative;
  margin: 1.6rem 0;
  padding: 1.1rem 1.3rem 1.1rem 3.1rem;
  border-left: 3px solid var(--accent);
  border-radius: 0 var(--r-sm) var(--r-sm) 0;
  background: color-mix(in srgb, var(--accent) 9%, var(--panel));
}

.prose .callout::before {
  content: "i";
  position: absolute;
  top: 1.15rem;
  left: 1.15rem;
  width: 1.2rem;
  height: 1.2rem;
  border: 1px solid currentColor;
  border-radius: var(--r-pill);
  color: var(--accent-dark);
  font: 700 0.75rem/1.15rem var(--font-display);
  text-align: center;
}

.prose .callout.warning {
  border-left-color: var(--warn);
  background: color-mix(in srgb, var(--warn) 13%, var(--panel));
}

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

.prose .callout.success {
  border-left-color: var(--success);
  background: color-mix(in srgb, var(--success) 11%, var(--panel));
}

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

.prose .verdict {
  padding-left: 1.3rem;
  font-weight: 500;
}

.prose .verdict strong {
  color: var(--accent-dark);
}

.prose .stat-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(min(100%, 12rem), 1fr));
  gap: 0.85rem;
  margin-block: 1.6rem;
}

.prose .stat-card {
  position: relative;
  min-width: 0;
  padding: 1.3rem;
  border: 1px solid var(--border);
  border-radius: var(--r-sm);
  background: color-mix(in srgb, var(--accent) 8%, var(--panel));
  overflow: hidden;
}

.prose .stat-card::before {
  content: "";
  position: absolute;
  inset: 0 0 auto;
  height: 0.2rem;
  background: var(--accent);
}

.prose .stat-card:nth-child(even) {
  background: color-mix(in srgb, var(--mist-sky) 32%, var(--panel));
}

.prose .stat-card:nth-child(even)::before {
  background: var(--ribbon-sky);
}

.prose .stat-num {
  display: block;
  font: 700 clamp(1.55rem, 3vw, 2rem)/1.25 var(--font-mono);
  color: var(--text);
}

.prose .stat-label {
  display: block;
  margin-top: 0.35rem;
  font-size: 0.88rem;
  color: var(--muted);
}

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

.prose .check-list li {
  padding: 0.8rem 1rem;
  border: 1px solid var(--border);
  border-radius: var(--r-sm);
  background: var(--panel);
  list-style: none;
}

.prose .check-list li + li {
  margin-top: 0.5rem;
}

/* 推广区、关联卡与上下篇不叠加整屏级留白。 */
.promo-block {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.5rem;
  width: min(100%, calc(56rem + 2 * var(--gutter)));
  max-width: calc(56rem + 2 * var(--gutter));
  margin: 3rem auto 2rem;
  padding: 2rem max(var(--gutter), 1.5rem);
  border: 1px solid var(--glass-edge);
  border-radius: var(--r-sm);
  background: linear-gradient(110deg, var(--accent-dark), var(--accent));
  color: var(--on-accent);
  overflow: hidden;
}

.promo-block::before {
  content: "";
  position: absolute;
  right: 1rem;
  top: -1.5rem;
  width: 5rem;
  height: 5rem;
  border: 1px solid var(--glass-edge);
  border-radius: var(--r-sm);
  opacity: 0.45;
  pointer-events: none;
}

.promo-block > * {
  position: relative;
  z-index: 1;
}

.promo-block h2 {
  margin: 0 0 0.5rem;
  font: 700 1.55rem/1.35 var(--font-display);
  color: var(--on-accent);
  text-wrap: pretty;
}

.promo-block p {
  max-width: 34rem;
  margin: 0;
  font-size: 0.95rem;
  line-height: 1.75;
  color: var(--on-accent);
}

.promo-block .btn-primary {
  flex: none;
  border: 1px solid var(--panel);
  background: var(--panel);
  color: var(--accent-dark);
}

.promo-block .btn-ghost,
.promo-block .btn-secondary {
  border: 1px solid var(--panel);
  background: transparent;
  color: var(--on-accent);
}

#related-posts {
  padding-top: 1.5rem;
  padding-bottom: 1rem;
}

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

#related-posts > h2 {
  margin: 0 0 1rem;
  font: 700 1.5rem/1.4 var(--font-display);
  text-wrap: pretty;
}

.related-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 0.8rem;
}

.related-card {
  padding: 1.15rem;
}

.related-card h3 {
  margin: 0.9rem 0 0.55rem;
  font-size: 1.04rem;
}

.related-card p {
  font-size: 0.85rem;
}

.related-meta {
  gap: 0.4rem;
  font-size: 0.7rem;
}

#post-nav {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0.8rem;
  padding-top: 0.8rem;
  padding-bottom: 2rem;
}

.post-nav-link {
  display: block;
  padding: 1.2rem;
  color: var(--text);
  text-decoration: none;
}

.post-nav-label {
  display: block;
  margin-bottom: 0.4rem;
  color: var(--accent-dark);
  font: 600 0.75rem/1.4 var(--font-mono);
}

.post-nav-link strong {
  display: block;
  font: 700 1rem/1.55 var(--font-display);
  text-wrap: pretty;
  overflow-wrap: anywhere;
}

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

/* 搜索落地文章可独立使用；列表页不插入此组件。 */
.float-cta {
  position: fixed;
  right: max(1rem, var(--gutter));
  bottom: max(1rem, env(safe-area-inset-bottom));
  z-index: 30;
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  max-width: calc(100vw - 2rem);
  min-height: 2.8rem;
  padding: 0.55rem 1rem;
  border: 1px solid var(--glass-edge);
  border-radius: var(--r-pill);
  background: var(--accent);
  box-shadow: var(--shadow-cta);
  color: var(--on-accent);
  font: 600 0.9rem/1.4 var(--font-body);
  text-decoration: none;
  transition: transform 180ms ease, background-color 180ms ease;
}

.float-cta:hover {
  transform: translateY(-3px);
  background: var(--accent-dark);
}

.float-cta svg {
  width: 1.15rem;
  height: 1.15rem;
  flex: none;
  fill: currentColor;
}

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

@media (max-width: 640px) {
  .blog-intro {
    padding-block: 3rem 2.5rem;
  }

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

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

  .article-hero {
    padding-block: 2.5rem 1.8rem;
  }

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

  .float-cta {
    right: 0.75rem;
    bottom: max(0.75rem, env(safe-area-inset-bottom));
    padding: 0.5rem 0.8rem;
    font-size: 0.82rem;
  }
}

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

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