/* ==========================================================================
   知识库文章详情页 - 瑞士极简排版流 (Swiss International / Editorial Mono)
   ========================================================================== */

.article-page-wrap {
  padding: 56px 0 96px;
}

/* Monospace Breadcrumbs */
.breadcrumb-nav {
  display: flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: #71717A;
  margin-bottom: 36px;
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

.breadcrumb-nav a {
  color: #A1A1AA;
}

.breadcrumb-nav a:hover {
  color: #FFFFFF;
  text-decoration: underline;
}

.breadcrumb-separator {
  color: #3F3F46;
}

.breadcrumb-current {
  color: #FFFFFF;
  font-weight: 700;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  max-width: 400px;
}

/* Article Layout Grid */
.article-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 300px;
  gap: 40px;
  align-items: start;
}

/* Main Editorial Document Container (#F4F4F5 轻冷灰底块) */
.article-main-card {
  background: var(--bg-block);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-none);
  padding: 56px 48px;
  color: var(--color-text-main);
}

.article-header {
  margin-bottom: 40px;
  padding-bottom: 32px;
  border-bottom: 1px solid var(--color-border);
}

.article-meta-badge {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 0.74rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  background: #000000;
  color: #FFFFFF;
  padding: 3px 10px;
  margin-bottom: 20px;
}

.article-page-title {
  font-size: clamp(2rem, 4vw, 2.8rem);
  font-weight: 900;
  line-height: 1.15;
  color: var(--color-text-main);
  letter-spacing: -0.04em;
  margin-bottom: 20px;
}

.article-info-bar {
  display: flex;
  align-items: center;
  gap: 24px;
  flex-wrap: wrap;
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--color-text-muted);
  text-transform: uppercase;
}

.info-item {
  display: flex;
  align-items: center;
  gap: 6px;
}

/* Article Body Typography (Swiss Editorial) */
.article-content {
  font-size: 1.05rem;
  line-height: 1.8;
  color: #18181B;
}

.article-content h2 {
  font-size: 1.6rem;
  font-weight: 900;
  letter-spacing: -0.03em;
  margin: 48px 0 20px;
  color: var(--color-text-main);
  padding-bottom: 12px;
  border-bottom: 2px solid #18181B;
  text-transform: uppercase;
}

.article-content h3 {
  font-size: 1.25rem;
  font-weight: 800;
  letter-spacing: -0.02em;
  margin: 32px 0 14px;
  color: var(--color-text-main);
}

.article-content p {
  margin-bottom: 20px;
  color: #27272A;
}

.article-content ul,
.article-content ol {
  margin: 0 0 24px 24px;
  color: #27272A;
}

.article-content li {
  margin-bottom: 10px;
  line-height: 1.7;
}

.article-content strong {
  color: #000000;
  font-weight: 800;
}

/* Callouts / Highlights (Stark Monolithic Rectangles) */
.callout {
  padding: 22px 26px;
  border-radius: var(--radius-none);
  margin: 32px 0;
  font-size: 0.96rem;
  line-height: 1.65;
  background: #FFFFFF;
  border: 1px solid var(--color-border);
  border-left: 4px solid #000000;
}

.callout.tip {
  border-left-color: #18181B;
  background: #FFFFFF;
}

.callout.warning {
  border-left-color: #000000;
  background: #FFFFFF;
}

/* In-Article Action Block */
.article-cta-box {
  background: #FFFFFF;
  border: 1px solid #000000;
  border-radius: var(--radius-none);
  padding: 36px 32px;
  margin: 48px 0;
  text-align: center;
}

.article-cta-box h3 {
  font-size: 1.45rem;
  font-weight: 900;
  letter-spacing: -0.03em;
  text-transform: uppercase;
  margin-bottom: 10px;
  color: #000000;
}

.article-cta-box p {
  color: var(--color-text-muted);
  font-size: 0.95rem;
  margin-bottom: 24px;
  max-width: 540px;
  margin-left: auto;
  margin-right: auto;
}

/* Code Snippet Blocks */
.code-block {
  background: #000000;
  color: #F4F4F5;
  padding: 20px 24px;
  border-radius: var(--radius-none);
  font-family: var(--font-mono);
  font-size: 0.88rem;
  line-height: 1.65;
  overflow-x: auto;
  margin: 24px 0;
  border: 1px solid #27272A;
}

/* Comparison Table (Swiss Grid) */
.article-table-wrap {
  overflow-x: auto;
  margin: 32px 0;
  border: 1px solid var(--color-border);
}

.article-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.92rem;
  background: #FFFFFF;
}

.article-table th {
  background: #000000;
  color: #FFFFFF;
  font-family: var(--font-mono);
  font-size: 0.82rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  padding: 14px 18px;
  text-align: left;
  border-bottom: 1px solid #000000;
}

.article-table td {
  padding: 14px 18px;
  border-bottom: 1px solid var(--color-border);
  color: var(--color-text-main);
}

.article-table tr:last-child td {
  border-bottom: none;
}

.article-table tr:hover td {
  background: #F4F4F5;
}

/* Sidebar Sticky TOC & CTA */
.article-sidebar {
  position: sticky;
  top: 92px;
  display: flex;
  flex-direction: column;
  gap: 24px;
}

.sidebar-card {
  background: var(--bg-block);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-none);
  padding: 28px 24px;
}

.sidebar-card h4 {
  font-family: var(--font-mono);
  font-size: 0.82rem;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-bottom: 16px;
  color: #18181B;
  border-bottom: 1px solid var(--color-border);
  padding-bottom: 10px;
}

.toc-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.toc-list a {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--color-text-muted);
  display: block;
  line-height: 1.45;
  transition: var(--transition-fast);
}

.toc-list a:hover {
  color: #000000;
  font-weight: 700;
  padding-left: 4px;
}

.sidebar-cta {
  background: #000000;
  border: 1px solid var(--color-border-dark);
  color: #FFFFFF;
  text-align: center;
}

.sidebar-cta h5 {
  font-size: 1.15rem;
  font-weight: 900;
  text-transform: uppercase;
  letter-spacing: -0.02em;
  margin-bottom: 8px;
}

.sidebar-cta p {
  font-size: 0.84rem;
  color: #A1A1AA;
  margin-bottom: 20px;
}

.article-tags-wrap {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 40px;
  padding-top: 24px;
  border-top: 1px solid var(--color-border);
}

.article-tag {
  background: #FFFFFF;
  border: 1px solid var(--color-border);
  color: var(--color-text-muted);
  font-family: var(--font-mono);
  font-size: 0.74rem;
  padding: 4px 10px;
  border-radius: var(--radius-none);
  text-transform: uppercase;
}

/* Mobile Responsive */
@media (max-width: 900px) {
  .article-layout {
    grid-template-columns: 1fr;
  }
  .article-sidebar {
    position: static;
  }
  .article-main-card {
    padding: 32px 20px;
  }
}