/* ==========================================================================
   轻语机场 (qingyujc.mom) 知识文章详情页专用样式
   特点：语义化阅读排版、TOC目录锚点高亮、代码块与步骤指引、内链卡片
   ========================================================================== */

.article-page-header {
  padding: calc(var(--nav-height) + 36px) 0 40px 0;
  background: radial-gradient(circle at 50% 0%, rgba(16, 185, 129, 0.12) 0%, transparent 70%);
  border-bottom: 1px solid rgba(16, 185, 129, 0.12);
}

.breadcrumbs {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.85rem;
  color: var(--text-dim);
  margin-bottom: 20px;
  flex-wrap: wrap;
}

.breadcrumbs a {
  color: var(--text-muted);
}

.breadcrumbs a:hover {
  color: var(--primary-light);
}

.breadcrumb-sep {
  color: var(--text-dim);
}

.article-header-title {
  font-size: clamp(1.8rem, 3.8vw, 2.7rem);
  font-weight: 800;
  line-height: 1.25;
  color: #fff;
  margin-bottom: 18px;
}

.article-header-meta {
  display: flex;
  align-items: center;
  gap: 18px;
  font-size: 0.85rem;
  color: var(--text-muted);
  flex-wrap: wrap;
}

.article-badge-tag {
  background: rgba(16, 185, 129, 0.15);
  border: 1px solid var(--border-subtle);
  color: var(--primary-light);
  padding: 3px 10px;
  border-radius: var(--radius-full);
  font-weight: 600;
}

/* 主体阅读双栏布局 */
.article-main-container {
  display: grid;
  grid-template-columns: 280px 1fr;
  gap: 48px;
  padding: 50px 0 80px 0;
  align-items: start;
}

/* 侧边目录 (Sticky TOC) */
.article-sidebar {
  position: sticky;
  top: calc(var(--nav-height) + 24px);
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: 24px 20px;
  backdrop-filter: blur(12px);
}

.sidebar-title {
  font-size: 0.95rem;
  font-weight: 700;
  color: #fff;
  margin-bottom: 14px;
  display: flex;
  align-items: center;
  gap: 8px;
}

.toc-list {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.toc-link {
  font-size: 0.86rem;
  color: var(--text-muted);
  line-height: 1.45;
  transition: all var(--transition-fast);
  padding-left: 8px;
  border-left: 2px solid transparent;
}

.toc-link:hover, .toc-link.active {
  color: var(--primary-light);
  border-left-color: var(--primary);
  background: rgba(16, 185, 129, 0.05);
}

/* 文章正文 */
.article-content {
  font-size: 1.05rem;
  line-height: 1.8;
  color: #cbd5e1;
  max-width: 820px;
}

.article-content h2 {
  font-size: 1.6rem;
  font-weight: 700;
  color: #fff;
  margin: 40px 0 18px 0;
  padding-bottom: 10px;
  border-bottom: 1px solid rgba(16, 185, 129, 0.15);
  scroll-margin-top: calc(var(--nav-height) + 20px);
}

.article-content h3 {
  font-size: 1.25rem;
  font-weight: 600;
  color: #e2e8f0;
  margin: 26px 0 12px 0;
  scroll-margin-top: calc(var(--nav-height) + 20px);
}

.article-content p {
  margin-bottom: 20px;
}

.article-content ul, .article-content ol {
  margin: 16px 0 24px 24px;
}

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

.article-content ul {
  list-style: disc;
}

.article-content ol {
  list-style: decimal;
}

.article-content strong {
  color: #fff;
  font-weight: 600;
}

.article-content code {
  background: rgba(16, 185, 129, 0.12);
  color: var(--accent-mint);
  padding: 2px 6px;
  border-radius: 4px;
  font-family: var(--font-mono);
  font-size: 0.88em;
}

.article-content pre {
  background: #040806;
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: 18px 20px;
  margin: 24px 0;
  overflow-x: auto;
}

.article-content pre code {
  background: transparent;
  padding: 0;
  color: #e2e8f0;
}

/* 提示与引用区块 */
.callout-box {
  background: rgba(16, 185, 129, 0.08);
  border-left: 4px solid var(--primary);
  border-radius: 0 var(--radius-md) var(--radius-md) 0;
  padding: 18px 22px;
  margin: 24px 0;
}

.callout-box.warning {
  background: rgba(234, 179, 8, 0.08);
  border-left-color: #eab308;
}

.callout-box p {
  margin-bottom: 0;
  font-size: 0.95rem;
}

/* 文章内部 CTA 条 */
.article-cta-box {
  background: linear-gradient(135deg, rgba(16, 185, 129, 0.16) 0%, rgba(6, 78, 59, 0.25) 100%);
  border: 1px solid var(--border-strong);
  border-radius: var(--radius-lg);
  padding: 32px;
  margin: 50px 0;
  text-align: center;
}

.article-cta-box h3 {
  font-size: 1.35rem;
  color: #fff;
  margin-bottom: 10px;
}

.article-cta-box p {
  color: var(--text-muted);
  font-size: 0.95rem;
  max-width: 600px;
  margin: 0 auto 20px auto;
}

/* 相关推荐阅读 */
.related-articles-section {
  border-top: 1px solid rgba(16, 185, 129, 0.15);
  padding-top: 40px;
  margin-top: 50px;
}

.related-articles-title {
  font-size: 1.3rem;
  color: #fff;
  margin-bottom: 24px;
}

.related-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 20px;
}

.related-card {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: 20px;
  transition: all var(--transition-fast);
}

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

.related-card h4 {
  font-size: 0.98rem;
  color: #fff;
  margin-bottom: 8px;
  line-height: 1.4;
}

.related-card p {
  font-size: 0.82rem;
  color: var(--text-muted);
  line-height: 1.5;
}

@media (max-width: 900px) {
  .article-main-container {
    grid-template-columns: 1fr;
  }

  .article-sidebar {
    display: none; /* 移动端隐藏固定目录，保留正文流畅滚动 */
  }
}