/* 基础样式 */
:root {
  --primary: #007aff;
  --primary-dark: #0056cc;
  --secondary: #5856d6;
  --dark: #1d1d1f;
  --light: #f5f5f7;
  --gray: #8e8e93;
  --border: #e5e5e7;
  --code-bg: #f8f9fa;
}

a {
  text-decoration: none;
  color: var(--primary);
  transition: var(--transition);
}

a:hover {
  color: var(--primary-dark);
}
.article {
  padding-top: 100px;
  padding-bottom: 80px;
}

/* 文章内容布局 */
.article-layout {
  display: flex;
  gap: 40px;
}

/* 文章主体 */
.article-main {
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: 30px;
  padding: 20px;
  background: #fff;
  border-radius: 8px;
  overflow: hidden;
}

.article-header {
  display: flex;
  flex-direction: column;
  gap: 15px;
}

.article-meta {
  display: flex;
  align-items: center;
  gap: 15px;
  font-size: 0.9rem;
  color: var(--gray);
}

.article-category {
  background-color: var(--primary);
  color: white;
  padding: 4px 10px;
  border-radius: 4px;
  font-size: 0.8rem;
}

.article-title {
  font-size: 2.2rem;
  line-height: 1.3;
  color: var(--dark);
}

.article-excerpt {
  font-size: 1.1rem;
  color: var(--gray);
  margin-bottom: 10px;
  line-height: 1.6;
}

/* 文章内容样式 */
.article-content {
  font-size: 1.05rem;
  line-height: 1.8;
}

.article-content h2 {
  font-size: 1.6rem;
  margin: 40px 0 20px;
  padding-bottom: 10px;
  border-bottom: 1px solid var(--border);
  color: var(--dark);
}

.article-content h3 {
  font-size: 1.3rem;
  margin: 30px 0 15px;
  color: var(--dark);
}

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

.article-content ul,
.article-content ol {
  margin-bottom: 20px;
  padding-left: 25px;
}

.article-content li {
  margin-bottom: 8px;
}

.article-content blockquote {
  border-left: 4px solid var(--primary);
  padding-left: 20px;
  margin: 25px 0;
  font-style: italic;
  color: var(--gray);
}

.article-content code {
  background-color: var(--code-bg);
  padding: 2px 6px;
  border-radius: 4px;
  font-family: "Monaco", "Menlo", "Ubuntu Mono", monospace;
  font-size: 0.9rem;
}

.article-content pre {
  background-color: var(--code-bg);
  padding: 20px;
  border-radius: 8px;
  overflow-x: auto;
  margin: 25px 0;
  font-family: "Monaco", "Menlo", "Ubuntu Mono", monospace;
  font-size: 0.9rem;
  line-height: 1.5;
}

.article-content img {
  max-width: 100%;
  height: auto;
  border-radius: 8px;
  margin: 25px 0;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
}

.article-content .image-caption {
  text-align: center;
  font-size: 0.9rem;
  color: var(--gray);
  margin-top: -15px;
  margin-bottom: 25px;
}

.info-box {
  background-color: var(--light);
  border-left: 4px solid var(--primary);
  padding: 20px;
  margin: 25px 0;
  border-radius: 0 8px 8px 0;
}

.info-box h4 {
  margin-bottom: 10px;
  color: var(--dark);
}

/* 文章标签 */
.article-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin: 30px 0;
  padding: 20px 0;
  border-top: 1px solid var(--border);
}

.article-tag {
  background-color: var(--light);
  color: var(--gray);
  padding: 6px 12px;
  border-radius: 15px;
  font-size: 0.85rem;
  transition: var(--transition);
}

.article-tag:hover {
  background-color: var(--primary);
  color: white;
}

/* 文章导航 */
.article-navigation {
  display: flex;
  justify-content: space-between;
}

.nav-item {
  max-width: 45%;
}

.nav-label {
  font-size: 0.9rem;
  color: var(--gray);
  margin-bottom: 5px;
}

.nav-title {
  font-weight: 500;
  color: var(--dark);
}

.nav-title:hover {
  color: var(--primary);
}

/* 相关文章 */
.related-articles {
  display: flex;
  flex-direction: column;
  gap: 25px;
  margin: 30px 0;
}

.section-title {
  font-size: 1.5rem;
  padding-bottom: 10px;
  border-bottom: 1px solid var(--border);
  color: var(--dark);
}

.related-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 25px;
}

.related-card {
  background: #fff;
  border-radius: 8px;
  overflow: hidden;
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
  transition: var(--transition);
}

.related-card:hover {
  transform: translateY(-3px);
  box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
}

.related-content {
  padding: 20px;
}

.related-category {
  background-color: var(--primary);
  color: white;
  padding: 2px 8px;
  border-radius: 4px;
  font-size: 0.75rem;
  margin-bottom: 10px;
  display: inline-block;
}

.related-title {
  font-size: 1.1rem;
  line-height: 1.4;
  margin-bottom: 10px;
}

.related-title a {
  color: var(--dark);
}

.related-title a:hover {
  color: var(--primary);
}

.related-excerpt {
  color: var(--gray);
  font-size: 0.9rem;
  line-height: 1.5;
}

/* 侧边栏 */
.article-sidebar {
  flex: 0 0 300px;
  display: flex;
  flex-direction: column;
  gap: 25px;
}

.sidebar-widget {
  display: flex;
  flex-direction: column;
  gap: 15px;
  background: #fff;
  border-radius: 8px;
  padding: 20px;
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
}

.widget-title {
  font-size: 1.1rem;
  padding-bottom: 10px;
  border-bottom: 1px solid var(--border);
  color: var(--dark);
}

.categories-list,
.popular-posts {
  list-style: none;
}

.categories-list li,
.popular-posts li {
  margin-bottom: 10px;
  padding-bottom: 10px;
  border-bottom: 1px solid var(--border);
}

.categories-list li:last-child,
.popular-posts li:last-child {
  margin-bottom: 0;
  padding-bottom: 0;
  border-bottom: none;
}

.categories-list a,
.popular-posts a {
  display: flex;
  justify-content: space-between;
  align-items: center;
  color: var(--dark);
}

.categories-list a:hover,
.popular-posts a:hover {
  color: var(--primary);
}

.category-count {
  background-color: var(--light);
  color: var(--gray);
  padding: 2px 8px;
  border-radius: 10px;
  font-size: 0.75rem;
}

/* 响应式设计 */
@media (max-width: 1105px) {
  .article-layout {
    flex-direction: column;
    gap: 30px;
  }

  .article-sidebar {
    flex: 1;
    order: -1;
  }
}

@media (max-width: 768px) {
  .article-title {
    font-size: 1.8rem;
  }

  .article-navigation {
    flex-direction: column;
    gap: 20px;
  }

  .nav-item {
    max-width: 100%;
  }

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

@media (max-width: 576px) {
  .article-meta {
    flex-wrap: wrap;
    gap: 8px;
  }

  .article-title {
    font-size: 1.5rem;
  }
}