/**
 * 商业化CMS模板样式
 * 简约 · 扁平化 · 高端大气
 * V2.0 - 2026
 */

/* ==================== 基础样式 ==================== */
:root {
  --primary-color: #1a73e8;
  --secondary-color: #5f6368;
  --text-primary: #202124;
  --text-secondary: #5f6368;
  --text-light: #80868b;
  --border-color: #dadce0;
  --bg-gray: #f8f9fa;
  --bg-white: #ffffff;
  --hover-bg: #f1f3f4;
  --shadow-sm: 0 1px 2px 0 rgba(60,64,67,.3), 0 1px 3px 1px rgba(60,64,67,.15);
  --shadow-md: 0 1px 3px 0 rgba(60,64,67,.3), 0 4px 8px 3px rgba(60,64,67,.15);
  --transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
}

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

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
  font-size: 14px;
  line-height: 1.6;
  color: var(--text-primary);
  background-color: var(--bg-gray);
}

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

a:hover {
  color: #1557b0;
}

img {
  max-width: 100%;
  height: auto;
  display: block;
}

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 20px;
}

/* ==================== 头部导航 ==================== */
.site-header {
  background: var(--bg-white);
  border-bottom: 1px solid var(--border-color);
  position: sticky;
  top: 0;
  z-index: 1000;
}

.site-header .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px;
}

.logo {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 20px;
  font-weight: 500;
  color: var(--text-primary);
}

.logo img {
  height: 32px;
  width: auto;
}

.main-nav {
  display: flex;
  gap: 32px;
  align-items: center;
}

.main-nav a {
  color: var(--text-secondary);
  font-size: 14px;
  font-weight: 500;
  padding: 8px 0;
  position: relative;
  transition: var(--transition);
}

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

.main-nav a.active {
  color: var(--primary-color);
}

.main-nav a.active::after {
  content: '';
  position: absolute;
  bottom: -1px;
  left: 0;
  right: 0;
  height: 2px;
  background: var(--primary-color);
}

.search-box form {
  display: flex;
  gap: 8px;
}

.search-box input {
  width: 240px;
  height: 36px;
  padding: 0 12px;
  border: 1px solid var(--border-color);
  border-radius: 4px;
  font-size: 14px;
  transition: var(--transition);
}

.search-box input:focus {
  outline: none;
  border-color: var(--primary-color);
  box-shadow: 0 0 0 1px var(--primary-color);
}

.search-box button {
  height: 36px;
  padding: 0 16px;
  background: var(--primary-color);
  color: white;
  border: none;
  border-radius: 4px;
  font-size: 14px;
  font-weight: 500;
  cursor: pointer;
  transition: var(--transition);
}

.search-box button:hover {
  background: #1557b0;
}

/* ==================== 轮播图 ==================== */
.hero-slider {
  background: var(--bg-white);
  margin-bottom: 24px;
}

.hero-slider .container {
  padding: 0;
}

.slider-item {
  position: relative;
  height: 400px;
  overflow: hidden;
}

.slider-item img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.slider-content {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  padding: 32px;
  background: linear-gradient(to top, rgba(0,0,0,0.7), transparent);
  color: white;
}

.slider-content h2 {
  font-size: 28px;
  font-weight: 500;
  margin-bottom: 8px;
}

.slider-content p {
  font-size: 14px;
  opacity: 0.9;
}

/* ==================== 主内容区 ==================== */
.main-content {
  padding: 24px 0;
  min-height: calc(100vh - 200px);
}

/* 面包屑导航 */
.breadcrumb {
  padding: 16px 0;
  margin-bottom: 24px;
  font-size: 13px;
  color: var(--text-secondary);
}

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

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

/* 区块标题 */
.section-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 20px;
  padding-bottom: 12px;
  border-bottom: 2px solid var(--border-color);
}

.section-title {
  font-size: 20px;
  font-weight: 500;
  color: var(--text-primary);
}

.section-more {
  font-size: 13px;
  color: var(--text-secondary);
}

.section-more:hover {
  color: var(--primary-color);
}

/* ==================== 首页样式 ==================== */
.home-section {
  background: var(--bg-white);
  padding: 24px;
  margin-bottom: 24px;
  border-radius: 8px;
  border: 1px solid var(--border-color);
}

/* 最新文章网格 */
.article-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
}

.article-card {
  background: var(--bg-white);
  border: 1px solid var(--border-color);
  border-radius: 8px;
  overflow: hidden;
  transition: var(--transition);
}

.article-card:hover {
  box-shadow: var(--shadow-md);
  transform: translateY(-2px);
}

.article-card .article-image {
  position: relative;
  overflow: hidden;
  aspect-ratio: 16/9;
  background: var(--bg-gray);
}

.article-card .article-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.3s ease;
}

.article-card:hover .article-image img {
  transform: scale(1.05);
}

.article-card .article-info {
  padding: 16px;
}

.article-card h3 {
  font-size: 15px;
  font-weight: 500;
  line-height: 1.4;
  margin-bottom: 8px;
  color: var(--text-primary);
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.article-card h3 a {
  color: inherit;
}

.article-card h3 a:hover {
  color: var(--primary-color);
}

.article-card .article-summary {
  font-size: 13px;
  color: var(--text-secondary);
  line-height: 1.6;
  margin-bottom: 12px;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.article-meta {
  display: flex;
  gap: 16px;
  font-size: 12px;
  color: var(--text-light);
}

.article-meta span {
  display: flex;
  align-items: center;
  gap: 4px;
}

/* 栏目区块 */
.channel-block {
  list-style: none;
}

.channel-block li {
  padding: 12px 0;
  border-bottom: 1px solid var(--border-color);
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
}

.channel-block li:last-child {
  border-bottom: none;
}

.channel-block li a {
  color: var(--text-primary);
  font-size: 14px;
  flex: 1;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  transition: var(--transition);
}

.channel-block li a:hover {
  color: var(--primary-color);
}

.channel-block li .date {
  font-size: 12px;
  color: var(--text-light);
  flex-shrink: 0;
}

/* 图文列表 */
.featured-list {
  display: grid;
  gap: 20px;
}

.featured-item {
  display: grid;
  grid-template-columns: 200px 1fr;
  gap: 20px;
  background: var(--bg-white);
  border: 1px solid var(--border-color);
  border-radius: 8px;
  overflow: hidden;
  transition: var(--transition);
}

.featured-item:hover {
  box-shadow: var(--shadow-md);
}

.featured-item .item-image {
  aspect-ratio: 4/3;
  overflow: hidden;
  background: var(--bg-gray);
}

.featured-item .item-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.3s ease;
}

.featured-item:hover .item-image img {
  transform: scale(1.05);
}

.featured-item .item-info {
  padding: 20px 20px 20px 0;
  display: flex;
  flex-direction: column;
  justify-content: center;
}

.featured-item h3 {
  font-size: 16px;
  font-weight: 500;
  margin-bottom: 8px;
  line-height: 1.4;
}

.featured-item h3 a {
  color: var(--text-primary);
}

.featured-item h3 a:hover {
  color: var(--primary-color);
}

.featured-item .item-summary {
  font-size: 13px;
  color: var(--text-secondary);
  line-height: 1.6;
  margin-bottom: 12px;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

/* ==================== 列表页样式 ==================== */
.page-header {
  background: var(--bg-white);
  padding: 24px;
  margin-bottom: 24px;
  border-radius: 8px;
  border: 1px solid var(--border-color);
}

.page-header h1 {
  font-size: 24px;
  font-weight: 500;
  margin-bottom: 8px;
  color: var(--text-primary);
}

.page-header .description {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.6;
}

.content-layout {
  display: grid;
  grid-template-columns: 1fr 300px;
  gap: 24px;
}

.article-list {
  display: grid;
  gap: 20px;
}

.article-item {
  background: var(--bg-white);
  border: 1px solid var(--border-color);
  border-radius: 8px;
  overflow: hidden;
  transition: var(--transition);
}

.article-item:hover {
  box-shadow: var(--shadow-md);
}

.article-item-content {
  display: grid;
  grid-template-columns: 240px 1fr;
  gap: 20px;
}

.article-item .item-image {
  aspect-ratio: 4/3;
  overflow: hidden;
  background: var(--bg-gray);
}

.article-item .item-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.3s ease;
}

.article-item:hover .item-image img {
  transform: scale(1.05);
}

.article-item .item-info {
  padding: 20px 20px 20px 0;
}

.article-item h2 {
  font-size: 18px;
  font-weight: 500;
  margin-bottom: 12px;
  line-height: 1.4;
}

.article-item h2 a {
  color: var(--text-primary);
}

.article-item h2 a:hover {
  color: var(--primary-color);
}

.article-item .item-summary {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.6;
  margin-bottom: 12px;
}

/* ==================== 详情页样式 ==================== */
.article-detail {
  background: var(--bg-white);
  padding: 32px;
  border-radius: 8px;
  border: 1px solid var(--border-color);
  margin-bottom: 24px;
}

.article-header h1 {
  font-size: 28px;
  font-weight: 500;
  line-height: 1.3;
  margin-bottom: 16px;
  color: var(--text-primary);
}

.article-header .article-meta {
  padding: 16px 0;
  border-top: 1px solid var(--border-color);
  border-bottom: 1px solid var(--border-color);
  margin-bottom: 24px;
}

.article-cover {
  margin: 24px 0;
  border-radius: 8px;
  overflow: hidden;
}

.article-cover img {
  width: 100%;
  height: auto;
}

.article-content {
  font-size: 16px;
  line-height: 1.8;
  color: var(--text-primary);
}

.article-content h2 {
  font-size: 22px;
  font-weight: 500;
  margin: 32px 0 16px;
  color: var(--text-primary);
}

.article-content h3 {
  font-size: 18px;
  font-weight: 500;
  margin: 24px 0 12px;
  color: var(--text-primary);
}

.article-content p {
  margin-bottom: 16px;
}

.article-content img {
  margin: 24px 0;
  border-radius: 8px;
}

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

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

.article-content blockquote {
  border-left: 4px solid var(--primary-color);
  padding-left: 16px;
  margin: 16px 0;
  color: var(--text-secondary);
}

.article-content code {
  background: var(--bg-gray);
  padding: 2px 6px;
  border-radius: 3px;
  font-family: 'Courier New', monospace;
  font-size: 0.9em;
}

.article-content pre {
  background: #f6f8fa;
  padding: 16px;
  border-radius: 6px;
  overflow-x: auto;
  margin: 16px 0;
  border: 1px solid var(--border-color);
}

.article-content pre code {
  background: none;
  padding: 0;
}

.article-tags {
  margin-top: 24px;
  padding-top: 24px;
  border-top: 1px solid var(--border-color);
}

.tags-label {
  font-weight: 500;
  color: var(--text-secondary);
  margin-right: 8px;
}

.article-tags a {
  display: inline-block;
  padding: 6px 12px;
  background: var(--bg-gray);
  border-radius: 4px;
  font-size: 13px;
  margin-right: 8px;
  margin-bottom: 8px;
  color: var(--text-secondary);
  transition: var(--transition);
}

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

/* 文章导航 */
.article-nav {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
  margin-bottom: 24px;
}

.nav-item {
  background: var(--bg-white);
  padding: 20px;
  border-radius: 8px;
  border: 1px solid var(--border-color);
  transition: var(--transition);
}

.nav-item:hover {
  box-shadow: var(--shadow-md);
}

.nav-label {
  display: block;
  font-size: 12px;
  color: var(--text-light);
  margin-bottom: 8px;
  font-weight: 500;
}

.nav-item a {
  color: var(--text-primary);
  font-size: 14px;
  font-weight: 500;
}

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

/* 相关文章 */
.related-section {
  background: var(--bg-white);
  padding: 24px;
  border-radius: 8px;
  border: 1px solid var(--border-color);
  margin-bottom: 24px;
}

/* ==================== 侧边栏 ==================== */
.sidebar {
  display: grid;
  gap: 20px;
}

.widget {
  background: var(--bg-white);
  padding: 20px;
  border-radius: 8px;
  border: 1px solid var(--border-color);
}

.widget-title {
  font-size: 16px;
  font-weight: 500;
  margin-bottom: 16px;
  padding-bottom: 12px;
  border-bottom: 2px solid var(--primary-color);
  color: var(--text-primary);
}

.widget ul {
  list-style: none;
}

.widget li {
  padding: 10px 0;
  border-bottom: 1px solid var(--border-color);
}

.widget li:last-child {
  border-bottom: none;
}

.widget li a {
  color: var(--text-primary);
  font-size: 14px;
  display: block;
  transition: var(--transition);
}

.widget li a:hover {
  color: var(--primary-color);
  padding-left: 8px;
}

.hot-list li {
  display: flex;
  align-items: flex-start;
  gap: 12px;
}

.rank {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 20px;
  height: 20px;
  background: var(--bg-gray);
  border-radius: 3px;
  font-size: 12px;
  font-weight: 500;
  color: var(--text-secondary);
  flex-shrink: 0;
}

.hot-list li:nth-child(1) .rank {
  background: #ea4335;
  color: white;
}

.hot-list li:nth-child(2) .rank {
  background: #fbbc04;
  color: white;
}

.hot-list li:nth-child(3) .rank {
  background: #34a853;
  color: white;
}

/* 标签云 */
.tag-cloud {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.tag-cloud a {
  padding: 6px 12px;
  background: var(--bg-gray);
  border-radius: 4px;
  font-size: 13px;
  color: var(--text-secondary);
  transition: var(--transition);
}

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

/* ==================== 搜索页样式 ==================== */
.search-result {
  background: var(--bg-white);
  padding: 32px;
  border-radius: 8px;
  border: 1px solid var(--border-color);
}

.search-result h1 {
  font-size: 24px;
  font-weight: 500;
  margin-bottom: 8px;
  color: var(--text-primary);
}

.result-count {
  font-size: 14px;
  color: var(--text-secondary);
  margin-bottom: 24px;
}

.search-box-large {
  margin-bottom: 32px;
}

.search-box-large form {
  display: flex;
  gap: 12px;
  max-width: 600px;
}

.search-box-large input {
  flex: 1;
  height: 44px;
  padding: 0 16px;
  border: 1px solid var(--border-color);
  border-radius: 4px;
  font-size: 14px;
  transition: var(--transition);
}

.search-box-large input:focus {
  outline: none;
  border-color: var(--primary-color);
  box-shadow: 0 0 0 1px var(--primary-color);
}

.search-box-large button {
  height: 44px;
  padding: 0 24px;
  background: var(--primary-color);
  color: white;
  border: none;
  border-radius: 4px;
  font-size: 14px;
  font-weight: 500;
  cursor: pointer;
  transition: var(--transition);
}

.search-box-large button:hover {
  background: #1557b0;
}

.search-list {
  display: grid;
  gap: 24px;
}

.search-item {
  padding-bottom: 24px;
  border-bottom: 1px solid var(--border-color);
}

.search-item:last-child {
  border-bottom: none;
}

.search-item h2 {
  font-size: 18px;
  font-weight: 500;
  margin-bottom: 8px;
}

.search-item h2 a {
  color: var(--text-primary);
}

.search-item h2 a:hover {
  color: var(--primary-color);
}

.search-summary {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.6;
  margin-bottom: 8px;
}

.search-meta {
  display: flex;
  gap: 16px;
  font-size: 12px;
  color: var(--text-light);
}

.search-meta .url {
  color: var(--primary-color);
}

/* ==================== 分页 ==================== */
.pagination-wrapper {
  display: flex;
  justify-content: center;
  margin: 32px 0;
}

.pagination {
  display: flex;
  gap: 8px;
  align-items: center;
}

.pagination a,
.pagination span {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 36px;
  height: 36px;
  padding: 0 12px;
  border: 1px solid var(--border-color);
  border-radius: 4px;
  color: var(--text-primary);
  font-size: 14px;
  transition: var(--transition);
}

.pagination a:hover {
  background: var(--hover-bg);
  border-color: var(--primary-color);
  color: var(--primary-color);
}

.pagination .current {
  background: var(--primary-color);
  color: white;
  border-color: var(--primary-color);
}

/* ==================== 页脚 ==================== */
.site-footer {
  background: #202124;
  color: #9aa0a6;
  padding: 40px 0 20px;
  margin-top: 48px;
}

.footer-content {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  gap: 40px;
  margin-bottom: 32px;
}

.footer-info h3 {
  color: #e8eaed;
  font-size: 18px;
  font-weight: 500;
  margin-bottom: 16px;
}

.footer-info p {
  line-height: 1.6;
  margin-bottom: 12px;
  font-size: 14px;
}

.contact p {
  margin-bottom: 8px;
}

.footer-links h4,
.footer-tags h4 {
  color: #e8eaed;
  font-size: 16px;
  font-weight: 500;
  margin-bottom: 16px;
}

.footer-links .links {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.footer-links a {
  color: #9aa0a6;
  font-size: 14px;
  transition: var(--transition);
}

.footer-links a:hover {
  color: #e8eaed;
}

.footer-bottom {
  padding-top: 24px;
  border-top: 1px solid #3c4043;
  text-align: center;
  font-size: 13px;
}

.footer-bottom p {
  margin-bottom: 8px;
}

/* ==================== 响应式设计 ==================== */
@media (max-width: 1024px) {
  .article-grid {
    grid-template-columns: repeat(3, 1fr);
  }
  
  .content-layout {
    grid-template-columns: 1fr 280px;
  }
}

@media (max-width: 768px) {
  .site-header .container {
    flex-direction: column;
    height: auto;
    padding: 16px 20px;
    gap: 16px;
  }
  
  .main-nav {
    flex-wrap: wrap;
    justify-content: center;
    gap: 16px;
  }
  
  .article-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  
  .channel-grid {
    grid-template-columns: 1fr;
  }
  
  .content-layout {
    grid-template-columns: 1fr;
  }
  
  .article-item-content {
    grid-template-columns: 1fr;
  }
  
  .article-item .item-info {
    padding: 20px;
  }
  
  .featured-item {
    grid-template-columns: 1fr;
  }
  
  .featured-item .item-info {
    padding: 20px;
  }
  
  .article-detail {
    padding: 24px 20px;
  }
  
  .article-nav {
    grid-template-columns: 1fr;
  }
  
  .footer-content {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 480px) {
  .article-grid {
    grid-template-columns: 1fr;
  }
  
  .slider-item {
    height: 300px;
  }
  
  .article-header h1 {
    font-size: 22px;
  }
  
  .article-content {
    font-size: 15px;
  }
}