:root {
    --primary: #4361ee;
    --primary-light: #e6f0ff;
    --primary-dark: #3a0ca3;
    --secondary: #4cc9f0;
    --accent: #f72585;
    --dark: #2b2d42;
    --gray-dark: #4a4e69;
    --gray-medium: #8e9aaf;
    --gray-light: #f8f9fa;
    --white: #ffffff;
    --success: #4ade80;
    --warning: #fbbf24;
    --error: #f87171;
    --border-radius: 12px;
    --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.08);
    --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 8px 24px rgba(0, 0, 0, 0.12);
    --transition: all 0.3s cubic-bezier(0.25, 0.8, 0.25, 1);
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Inter', sans-serif;
    color: var(--gray-dark);
    line-height: 1.6;
    background-color: var(--gray-light);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

.container {
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 24px;
}

/* 头部样式 */
.hero {
    background: linear-gradient(135deg, var(--primary), var(--primary-dark));
    color: var(--white);
    padding: 100px 0 80px;
    text-align: center;
    position: relative;
    overflow: hidden;
    margin-bottom: 60px;
}

.hero::before {
    content: "";
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: radial-gradient(circle at 20% 50%, rgba(255,255,255,0.1) 0%, transparent 50%);
}

.hero-content {
    position: relative;
    z-index: 2;
    max-width: 800px;
    margin: 0 auto;
}

.hero h1 {
    font-family: 'Manrope', sans-serif;
    font-size: 3.5rem;
    font-weight: 800;
    margin-bottom: 20px;
    line-height: 1.2;
    letter-spacing: -0.5px;
}

.hero p {
    font-size: 1.25rem;
    opacity: 0.9;
    margin-bottom: 30px;
}

.search-bar {
    max-width: 600px;
    margin: 0 auto;
    position: relative;
}

.search-bar input {
    width: 100%;
    padding: 16px 24px;
    border-radius: 50px;
    border: none;
    font-size: 1rem;
    box-shadow: var(--shadow-md);
    padding-left: 50px;
}

.search-bar i {
    position: absolute;
    left: 20px;
    top: 50%;
    transform: translateY(-50%);
    color: var(--gray-medium);
}

/* 主要内容区 */
.documentation {
    padding-bottom: 80px;
}

.section-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 32px;
}

.section-title {
    font-family: 'Manrope', sans-serif;
    font-size: 2rem;
    font-weight: 700;
    color: var(--dark);
    position: relative;
    display: inline-block;
}

.section-title::after {
    content: "";
    position: absolute;
    bottom: -8px;
    left: 0;
    width: 50px;
    height: 4px;
    background: var(--primary);
    border-radius: 2px;
}

.view-all {
    color: var(--primary);
    font-weight: 600;
    text-decoration: none;
    display: flex;
    align-items: center;
    gap: 6px;
    transition: var(--transition);
}

.view-all:hover {
    color: var(--primary-dark);
}

/* 文档分类网格 */
.category-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(380px, 1fr));
    gap: 24px;
    margin-bottom: 60px;
}

.category-card {
    background: var(--white);
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-sm);
    padding: 32px;
    transition: var(--transition);
    border: 1px solid rgba(0, 0, 0, 0.05);
    position: relative;
    overflow: hidden;
}

.category-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
}

.category-card::before {
    content: "";
    position: absolute;
    top: 0;
    left: 0;
    width: 4px;
    height: 100%;
    background: var(--primary);
}

.category-card h3 {
    font-family: 'Manrope', sans-serif;
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: 20px;
    color: var(--dark);
    display: flex;
    align-items: center;
    gap: 12px;
}

.category-card h3 i {
    color: var(--primary);
    font-size: 1.8rem;
}

.category-card p {
    color: var(--gray-medium);
    margin-bottom: 24px;
}

.document-list {
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.document-item {
    display: flex;
    align-items: center;
    padding: 12px 16px;
    border-radius: 8px;
    transition: var(--transition);
}

.document-item:hover {
    background: var(--primary-light);
}

.document-item .icon {
    width: 36px;
    height: 36px;
    background: var(--primary-light);
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-right: 16px;
    flex-shrink: 0;
}

.document-item .icon i {
    color: var(--primary);
    font-size: 1rem;
}

.document-item a {
    color: var(--dark);
    text-decoration: none;
    font-weight: 500;
    flex: 1;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.document-item a:hover {
    color: var(--primary);
}

.document-item .arrow {
    color: var(--gray-medium);
    transition: var(--transition);
}

.document-item:hover .arrow {
    color: var(--primary);
    transform: translateX(3px);
}

/* 特色部分 */
.featured {
    background: var(--white);
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-md);
    padding: 40px;
    margin-bottom: 60px;
    display: flex;
    align-items: center;
    gap: 40px;
}

.featured-image {
    flex: 1;
    border-radius: 8px;
    overflow: hidden;
    box-shadow: var(--shadow-lg);
}

.featured-image img {
    width: 100%;
    height: auto;
    display: block;
    transition: all 0.8s ease-in-out;
}

.featured-image:hover img {
    transform: scale(1.03);
}

.featured-content {
    flex: 1;
}

.featured-content h3 {
    font-family: 'Manrope', sans-serif;
    font-size: 1.8rem;
    font-weight: 700;
    margin-bottom: 16px;
    color: var(--dark);
}

.featured-content p {
    color: var(--gray-medium);
    margin-bottom: 24px;
}

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 12px 24px;
    border-radius: 8px;
    font-weight: 600;
    text-decoration: none;
    transition: var(--transition);
    gap: 8px;
}

.btn-primary {
    background: var(--primary);
    color: var(--white);
}

.btn-primary:hover {
    background: var(--primary-dark);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.btn-outline {
    border: 2px solid var(--primary);
    color: var(--primary);
}

.btn-outline:hover {
    background: var(--primary-light);
    transform: translateY(-2px);
    box-shadow: var(--shadow-sm);
}

/* 页脚 */
.footer {
    background: var(--dark);
    color: var(--white);
    padding: 60px 0 40px;
}

.footer-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 40px;
    margin-bottom: 40px;
}

.footer-col h4 {
    font-family: 'Manrope', sans-serif;
    font-size: 1.2rem;
    font-weight: 700;
    margin-bottom: 20px;
    position: relative;
    display: inline-block;
}

.footer-col h4::after {
    content: "";
    position: absolute;
    bottom: -8px;
    left: 0;
    width: 30px;
    height: 3px;
    background: var(--primary);
}

.footer-links {
    list-style: none;
}

.footer-links li {
    margin-bottom: 12px;
}

.footer-links a {
    color: rgba(255, 255, 255, 0.7);
    text-decoration: none;
    transition: var(--transition);
    display: flex;
    align-items: center;
    gap: 8px;
}

.footer-links a:hover {
    color: var(--white);
    transform: translateX(4px);
}

.footer-links a i {
    font-size: 0.8rem;
}

.footer-bottom {
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    padding-top: 30px;
    text-align: center;
    color: rgba(255, 255, 255, 0.6);
    font-size: 0.9rem;
}

.social-links {
    display: flex;
    gap: 16px;
    margin-top: 20px;
}

.social-links a {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.1);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--white);
    transition: var(--transition);
}

.social-links a:hover {
    background: var(--primary);
    transform: translateY(-3px);
}

/* 响应式设计 */
@media (max-width: 1024px) {
    .hero h1 {
        font-size: 2.8rem;
    }
    
    .featured {
        flex-direction: column;
    }
    
    .featured-image {
        margin-bottom: 30px;
    }
}

@media (max-width: 768px) {
    .hero {
        padding: 80px 0 60px;
    }
    
    .hero h1 {
        font-size: 2.2rem;
    }
    
    .hero p {
        font-size: 1.1rem;
    }
    
    .category-grid {
        grid-template-columns: 1fr;
    }
    
    .section-title {
        font-size: 1.6rem;
    }
}

@media (max-width: 480px) {
    .hero h1 {
        font-size: 1.8rem;
    }
    
    .search-bar input {
        padding: 12px 20px;
        padding-left: 40px;
    }
    
    .category-card {
        padding: 24px;
    }
    
    .document-item {
        padding: 10px 12px;
    }
    
    .document-item .icon {
        width: 30px;
        height: 30px;
        margin-right: 12px;
    }
}

 /* 头部样式 */
 .article-header {
  background: linear-gradient(135deg, var(--primary), var(--primary-dark));
  color: var(--white);
  padding: 80px 0 60px;
  margin-bottom: 40px;
  position: relative;
  overflow: hidden;
}

.article-header::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: radial-gradient(circle at 20% 50%, rgba(255,255,255,0.1) 0%, transparent 50%);
}

.article-header-content {
  position: relative;
  z-index: 2;
}

.breadcrumb {
  display: flex;
  align-items: center;
  margin-bottom: 20px;
  font-size: 0.9rem;
  opacity: 0.9;
}

.breadcrumb a {
  color: var(--white);
  text-decoration: none;
  transition: var(--transition);
}

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

.breadcrumb i {
  margin: 0 10px;
  font-size: 0.8rem;
  opacity: 0.7;
}

.article-title {
  font-family: 'Playfair Display', serif;
  font-size: 2.5rem;
  font-weight: 700;
  margin-bottom: 15px;
  line-height: 1.3;
}

.article-meta {
  display: flex;
  align-items: center;
  gap: 20px;
  font-size: 0.9rem;
  opacity: 0.9;
}

.article-meta-item {
  display: flex;
  align-items: center;
  gap: 5px;
}

/* 文章内容样式 */
.article-content {
  background: var(--white);
  border-radius: var(--border-radius);
  box-shadow: var(--shadow-sm);
  padding: 50px;
  margin-bottom: 40px;
  position: relative;
  overflow: hidden;
}

.article-content::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 4px;
  height: 100%;
  background: var(--primary);
}

.content-section {
  margin-bottom: 40px;
}

.content-section h3 {
  font-family: 'Playfair Display', serif;
  font-size: 1.5rem;
  font-weight: 600;
  color: var(--dark);
  margin-bottom: 20px;
  position: relative;
  /* padding-left: 20px; */
}
/* 
.content-section h3::before {
  content: "";
  position: absolute;
  left: 0;
  top: 10px;
  width: 8px;
  height: 8px;
  background: var(--primary);
  border-radius: 50%;
} */

.content-text {
  color: var(--gray-dark);
}

.method-card {
  background: var(--primary-light);
  border-radius: 8px;
  padding: 25px;
  margin-bottom: 20px;
  border-left: 4px solid var(--primary);
}

.method-card h4 {
  font-size: 1.2rem;
  font-weight: 600;
  color: var(--primary-dark);
  margin-bottom: 15px;
  display: flex;
  align-items: center;
  gap: 10px;
}

.method-card h4 i {
  font-size: 1.3rem;
}

.method-steps {
  list-style-type: none;
}

.method-steps li {
  position: relative;
  padding-left: 30px;
  margin-bottom: 15px;
}

.method-steps li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 10px;
  width: 16px;
  height: 16px;
  background: var(--white);
  border: 2px solid var(--primary);
  border-radius: 50%;
}

.method-steps li::after {
  content: "";
  position: absolute;
  left: 6px;
  top: 16px;
  width: 4px;
  height: 4px;
  background: var(--primary);
  border-radius: 50%;
}

/* 图片示例 */
.image-example {
  margin: 30px 0;
  text-align: center;
}

.image-example img {
  max-width: 100%;
  height: auto;
  border-radius: 8px;
  box-shadow: var(--shadow-md);
  transition: var(--transition);
}

.image-example img:hover {
  box-shadow: var(--shadow-lg);
}

.image-caption {
  margin-top: 10px;
  font-size: 0.9rem;
  color: var(--gray-medium);
  font-style: italic;
}

/* 原文链接 */
.original-link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  color: var(--primary);
  text-decoration: none;
  font-weight: 500;
  padding: 12px 20px;
  border: 1px solid var(--primary);
  border-radius: 50px;
  transition: var(--transition);
  margin-top: 20px;
}

.original-link:hover {
  background: var(--primary-light);
  transform: translateY(-2px);
}

/* 相关文章 */
.related-articles {
  margin-top: 60px;
}

.related-title {
  font-family: 'Playfair Display', serif;
  font-size: 1.5rem;
  font-weight: 600;
  color: var(--dark);
  margin-bottom: 30px;
  position: relative;
  padding-bottom: 15px;
}

.related-title::after {
  content: "";
  position: absolute;
  bottom: 0;
  left: 0;
  width: 60px;
  height: 3px;
  background: var(--primary);
}

.related-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 20px;
}

.related-card {
  background: var(--white);
  border-radius: var(--border-radius);
  box-shadow: var(--shadow-sm);
  padding: 25px;
  transition: var(--transition);
}

.related-card:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-lg);
}

.related-card h4 {
  font-size: 1.1rem;
  font-weight: 600;
  margin-bottom: 10px;
  color: var(--dark);
}

.related-card p {
  color: var(--gray-medium);
  font-size: 0.9rem;
  margin-bottom: 15px;
}

.related-link {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  color: var(--primary);
  text-decoration: none;
  font-size: 0.9rem;
  font-weight: 500;
}

.related-link i {
  transition: var(--transition);
}

.related-link:hover i {
  transform: translateX(3px);
}

/* 响应式设计 */
@media (max-width: 768px) {
  .article-header {
      padding: 60px 0 40px;
  }
  
  .article-title {
      font-size: 2rem;
  }
  
  .article-content {
      padding: 30px;
  }
  
  .content-section h3 {
      font-size: 1.3rem;
  }
}

@media (max-width: 480px) {
  .article-header {
      padding: 50px 0 30px;
  }
  
  .article-title {
      font-size: 1.8rem;
  }
  
  .article-meta {
      flex-direction: column;
      align-items: flex-start;
      gap: 10px;
  }
  
  .method-card {
      padding: 20px;
  }
}

 /* 添加搜索高亮样式 */
 .highlight {
  color: rgb(251, 78, 78);
  font-weight: bold;
}
/* 无结果提示样式 */
.no-results {
    display: none;
    padding: 20px;
    text-align: center;
    color: #666;
    font-size: 16px;
}