/* 颜色变量定义 */
:root {
  --primary-blue: #1e3a8a;
  --secondary-blue: #3b82f6;
  --accent-orange: #f97316;
  --light-gray: #f3f4f6;
  --medium-gray: #6b7280;
  --dark-gray: #374151;
  --white: #ffffff;
  --shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
  --transition: all 0.3s ease;
}

/* 全局重置和基础样式 */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
  line-height: 1.6;
  color: var(--dark-gray);
  background-color: var(--white);
}

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

/* 头部样式 */
.header {
  background-color: var(--white);
  box-shadow: var(--shadow);
  position: sticky;
  top: 0;
  z-index: 1000;
}

nav {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 1rem 0;
}

.logo {
  display: flex;
  align-items: center;
  font-size: 1.5rem;
  font-weight: bold;
  color: var(--primary-blue);
  text-decoration: none;
}

.logo span {
  color: var(--accent-orange);
  margin-left: 0.5rem;
}

.nav-links {
  display: flex;
  list-style: none;
  gap: 2rem;
}

.nav-links a {
  text-decoration: none;
  color: var(--dark-gray);
  font-weight: 500;
  transition: var(--transition);
  position: relative;
}

.nav-links a:hover {
  color: var(--accent-orange);
}

/* 多级下拉菜单 */
.dropdown {
  position: relative;
}

.dropdown-toggle {
  cursor: pointer;
}

.dropdown-menu {
  display: none;
  position: absolute;
  top: 100%;
  left: 0;
  background-color: var(--white);
  box-shadow: var(--shadow);
  border-radius: 4px;
  overflow: hidden;
  min-width: 200px;
  z-index: 1000;
}

.dropdown:hover .dropdown-menu {
  display: block;
}

.dropdown-menu a {
  display: block;
  padding: 0.75rem 1rem;
  color: var(--dark-gray);
  text-decoration: none;
  transition: var(--transition);
}

.dropdown-menu a:hover {
  background-color: var(--light-gray);
  color: var(--accent-orange);
}

/* 二级下拉菜单 */
.dropdown-submenu {
  position: relative;
}

.dropdown-submenu:hover .dropdown-menu {
  display: block;
  left: 100%;
  top: 0;
}

/* 汉堡菜单按钮（移动端） */
.hamburger {
  display: none;
  flex-direction: column;
  cursor: pointer;
}

.hamburger span {
  width: 25px;
  height: 3px;
  background-color: var(--primary-blue);
  margin: 3px 0;
  transition: var(--transition);
}

/* 页面标题样式 */
.page-header {
  background-color: var(--light-gray);
  padding: 2rem 0;
  border-bottom: 1px solid #e5e7eb;
}

.breadcrumb {
  text-align: center;
  margin-top: 1rem;
  color: var(--medium-gray);
  font-size: 0.875rem;
}

.breadcrumb a {
  color: var(--secondary-blue);
  text-decoration: none;
}

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

/* Banner样式 */
.banner {
  background: linear-gradient(135deg, var(--primary-blue) 0%, var(--secondary-blue) 100%);
  color: var(--white);
  padding: 8rem 0;
  text-align: center;
  position: relative;
  overflow: hidden;
}

.banner {
  position: relative;
  overflow: hidden;
}

.banner::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 1000 1000"><defs><pattern id="grid" width="50" height="50" patternUnits="userSpaceOnUse"><path d="M 50 0 L 0 0 0 50" fill="none" stroke="rgba(255,255,255,0.1)" stroke-width="1"/></pattern></defs><rect width="100%" height="100%" fill="url(%23grid)"/></svg>');
  opacity: 0.3;
  z-index: 1;
}

.banner-slider {
  position: relative;
  width: 100%;
  height: 100%;
}

.banner-slide {
  display: none;
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: linear-gradient(135deg, var(--primary-blue) 0%, var(--secondary-blue) 100%);
  color: var(--white);
  padding: 8rem 0;
  text-align: center;
  transition: opacity 0.5s ease;
}

.banner-slide.active {
  display: block;
  position: relative;
}

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

.banner h1 {
  font-size: 3rem;
  margin-bottom: 1rem;
  line-height: 1.2;
}

.banner p {
  font-size: 1.25rem;
  margin-bottom: 2rem;
  max-width: 600px;
  margin-left: auto;
  margin-right: auto;
}

/* 轮播指示器样式 */
.banner-indicators {
  position: absolute;
  bottom: 2rem;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  gap: 1rem;
  z-index: 3;
}

.indicator {
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background-color: rgba(255, 255, 255, 0.5);
  border: none;
  cursor: pointer;
  transition: all 0.3s ease;
}

.indicator.active {
  background-color: var(--white);
  transform: scale(1.2);
}

/* 轮播控制按钮样式 */
.banner-control {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  width: 50px;
  height: 50px;
  border-radius: 50%;
  background-color: rgba(255, 255, 255, 0.2);
  border: none;
  color: var(--white);
  font-size: 1.5rem;
  cursor: pointer;
  transition: all 0.3s ease;
  z-index: 3;
}

.banner-control:hover {
  background-color: rgba(255, 255, 255, 0.4);
  transform: translateY(-50%) scale(1.1);
}

.banner-control.prev {
  left: 2rem;
}

.banner-control.next {
  right: 2rem;
}

/* 响应式调整 */
@media (max-width: 768px) {
  .banner-control {
    width: 40px;
    height: 40px;
    font-size: 1.25rem;
  }
  
  .banner-control.prev {
    left: 1rem;
  }
  
  .banner-control.next {
    right: 1rem;
  }
  
  .banner-indicators {
    bottom: 1rem;
  }
}

.btn {
  display: inline-block;
  padding: 0.875rem 2rem;
  border-radius: 4px;
  font-weight: 600;
  text-decoration: none;
  transition: var(--transition);
  cursor: pointer;
  border: none;
  font-size: 1rem;
}

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

.btn-primary:hover {
  background-color: #ea580c;
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(249, 115, 22, 0.3);
}

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

.btn-secondary:hover {
  background-color: #2563eb;
  transform: translateY(-2px);
}

/* 服务卡片样式 */
.services {
  padding: 6rem 0;
  background-color: var(--white);
}

.section-title {
  text-align: center;
  font-size: 2.5rem;
  color: var(--primary-blue);
  margin-bottom: 4rem;
  position: relative;
}

.section-title::after {
  content: '';
  position: absolute;
  bottom: -10px;
  left: 50%;
  transform: translateX(-50%);
  width: 80px;
  height: 4px;
  background-color: var(--accent-orange);
  border-radius: 2px;
}

.services-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 2rem;
}

.service-card {
  background-color: var(--white);
  border-radius: 8px;
  box-shadow: var(--shadow);
  padding: 2rem;
  text-align: center;
  transition: var(--transition);
}

.service-card:hover {
  transform: translateY(-5px);
  box-shadow: 0 10px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
}

.service-icon {
  width: 80px;
  height: 80px;
  margin: 0 auto 1.5rem;
  background-color: var(--light-gray);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 2rem;
  color: var(--accent-orange);
  transition: var(--transition);
}

.service-card:hover .service-icon {
  background-color: var(--accent-orange);
  color: var(--white);
}

.service-card h3 {
  font-size: 1.5rem;
  color: var(--primary-blue);
  margin-bottom: 1rem;
}

.service-card p {
  color: var(--medium-gray);
  line-height: 1.6;
}

/* AI智能招聘系统样式 */
.ai-system {
  padding: 6rem 0;
  background-color: var(--light-gray);
}

.ai-content {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4rem;
  align-items: center;
}

.ai-text h2 {
  font-size: 2.5rem;
  color: var(--primary-blue);
  margin-bottom: 1.5rem;
}

.ai-text p {
  font-size: 1.125rem;
  color: var(--medium-gray);
  margin-bottom: 2rem;
  line-height: 1.7;
}

.ai-stats {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1.5rem;
}

.stat-item {
  background-color: var(--white);
  padding: 1.5rem;
  border-radius: 8px;
  box-shadow: var(--shadow);
  text-align: center;
}

.stat-number {
  font-size: 2.5rem;
  font-weight: bold;
  color: var(--accent-orange);
  margin-bottom: 0.5rem;
}

.stat-label {
  color: var(--medium-gray);
  font-size: 0.875rem;
}

/* 数据图表样式 */
.ai-chart {
  background-color: var(--white);
  padding: 2rem;
  border-radius: 8px;
  box-shadow: var(--shadow);
}

.chart-title {
  font-size: 1.25rem;
  color: var(--primary-blue);
  margin-bottom: 1.5rem;
  text-align: center;
}

.chart-image {
  width: 100%;
  height: 100%;
  object-fit: cover;
  border-radius: 8px;
}

/* 确保AI图表容器与左侧内容高度一致 */
.ai-content {
  align-items: stretch;
}

.ai-chart {
  display: flex;
  align-items: center;
  justify-content: center;
}

.chart-bar {
  display: flex;
  align-items: flex-end;
  height: 200px;
  gap: 1rem;
  margin-bottom: 2rem;
}

.bar {
  flex: 1;
  background: linear-gradient(to top, var(--secondary-blue), var(--accent-orange));
  border-radius: 4px 4px 0 0;
  position: relative;
  transition: var(--transition);
}

.bar:hover {
  transform: scaleY(1.05);
}

.bar::after {
  content: attr(data-value) '%';
  position: absolute;
  top: -25px;
  left: 50%;
  transform: translateX(-50%);
  font-size: 0.875rem;
  font-weight: bold;
  color: var(--dark-gray);
}

.bar-label {
  text-align: center;
  font-size: 0.75rem;
  color: var(--medium-gray);
  margin-top: 0.5rem;
}

/* 优势与新闻样式 */
.advantages-news {
  padding: 6rem 0;
  background-color: var(--white);
}

.advantages-news-content {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4rem;
}

.advantages h2 {
  font-size: 2rem;
  color: var(--primary-blue);
  margin-bottom: 2rem;
}

.advantage-list {
  list-style: none;
}

.advantage-item {
  display: flex;
  align-items: flex-start;
  margin-bottom: 1.5rem;
}

.advantage-icon {
  width: 40px;
  height: 40px;
  background-color: var(--accent-orange);
  color: var(--white);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-right: 1rem;
  flex-shrink: 0;
}

.advantage-text h3 {
  font-size: 1.25rem;
  color: var(--primary-blue);
  margin-bottom: 0.5rem;
}

.advantage-text p {
  color: var(--medium-gray);
  line-height: 1.6;
}

/* 横版优势模块样式 */
.advantage-list-horizontal {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 2rem;
  margin-top: 2rem;
}

.advantage-item-horizontal {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  padding: 1.5rem;
  background-color: var(--white);
  border-radius: 8px;
  box-shadow: var(--shadow);
  transition: var(--transition);
}

.advantage-item-horizontal:hover {
  transform: translateY(-5px);
  box-shadow: 0 10px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
}

.advantage-item-horizontal .advantage-icon {
  margin-right: 0;
  margin-bottom: 1rem;
}

/* 最新动态横版2*2布局样式 */
.latest-news {
  padding: 6rem 0;
  background-color: var(--white);
}

.news-grid-horizontal {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 2rem;
  margin-top: 3rem;
}

.news-item-horizontal {
  display: flex;
  flex-direction: column;
  background-color: var(--white);
  border-radius: 8px;
  box-shadow: var(--shadow);
  overflow: hidden;
  transition: var(--transition);
}

.news-item-horizontal:hover {
  transform: translateY(-5px);
  box-shadow: 0 10px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
}

.news-image {
  width: 100%;
  height: 200px;
  overflow: hidden;
}

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

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

.news-content {
  padding: 1.5rem;
}

.news-item-horizontal .news-date {
  font-size: 0.75rem;
  color: var(--medium-gray);
  margin-bottom: 0.75rem;
  display: inline-block;
}

.news-item-horizontal h3 {
  font-size: 1.125rem;
  margin-bottom: 0.75rem;
  line-height: 1.4;
}

.news-item-horizontal h3 a {
  color: var(--primary-blue);
  text-decoration: none;
  position: relative;
  transition: all 0.3s ease;
  display: inline-block;
}

.news-item-horizontal h3 a::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 0;
  width: 0;
  height: 2px;
  background-color: var(--accent-orange);
  transition: width 0.3s ease;
}

.news-item-horizontal h3 a:hover {
  color: var(--accent-orange);
  transform: translateY(-2px);
}

.news-item-horizontal h3 a:hover::after {
  width: 100%;
}

.news-item-horizontal p {
  color: var(--medium-gray);
  line-height: 1.5;
  margin: 0;
  font-size: 0.9rem;
}

.news-more {
  text-align: center;
  margin-top: 3rem;
}

/* 行距缩小 */
.news-item-horizontal h3 {
  margin-bottom: 0.5rem;
}

.news-item-horizontal p {
  margin-bottom: 0;
  line-height: 1.4;
}

/* 新闻列表样式 */
.news h2 {
  font-size: 2rem;
  color: var(--primary-blue);
  margin-bottom: 2rem;
}

.news-list {
  list-style: none;
}

.news-item {
  margin-bottom: 2rem;
  padding-bottom: 2rem;
  border-bottom: 1px solid var(--light-gray);
}

.news-item:last-child {
  margin-bottom: 0;
  padding-bottom: 0;
  border-bottom: none;
}

.news-date {
  color: var(--accent-orange);
  font-size: 0.875rem;
  font-weight: 600;
  margin-bottom: 0.5rem;
  display: inline-block;
}

.news-item h3 {
  font-size: 1.25rem;
  color: var(--primary-blue);
  margin-bottom: 0.5rem;
}

.news-item h3 a {
  color: inherit;
  text-decoration: none;
  transition: var(--transition);
}

.news-item h3 a:hover {
  color: var(--accent-orange);
}

.news-item p {
  color: var(--medium-gray);
  line-height: 1.6;
}

/* 单页面样式 */
.single-page {
  padding: 4rem 0;
}

.single-content {
  display: grid;
  grid-template-columns: 3fr 1fr;
  gap: 3rem;
}

.main-content h1 {
  font-size: 2.5rem;
  color: var(--primary-blue);
  margin-bottom: 1.5rem;
}

.main-content p {
  margin-bottom: 1.5rem;
  line-height: 1.7;
  color: var(--dark-gray);
}

/* 侧边栏样式 */
.sidebar {
  background-color: var(--light-gray);
  padding: 2rem;
  border-radius: 8px;
  box-shadow: var(--shadow);
}

.sidebar h3 {
  font-size: 1.25rem;
  color: var(--primary-blue);
  margin-bottom: 1.5rem;
  padding-bottom: 0.5rem;
  border-bottom: 2px solid var(--accent-orange);
}

.sidebar-content {
  color: var(--medium-gray);
  line-height: 1.6;
}

/* 新闻列表页样式 */
.news-page {
  padding: 4rem 0;
}

.news-grid {
  display: grid;
  grid-template-columns: 3fr 1fr;
  gap: 3rem;
}

.news-cards {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 2rem;
}

.news-card {
  background-color: var(--white);
  border-radius: 8px;
  box-shadow: var(--shadow);
  overflow: hidden;
  transition: var(--transition);
}

.news-card:hover {
  transform: translateY(-5px);
  box-shadow: 0 10px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
}

.news-card img {
  width: 100%;
  height: 200px;
  object-fit: cover;
}

.news-card-content {
  padding: 1.5rem;
}

.news-card .news-date {
  margin-bottom: 0.75rem;
}

.news-card h3 {
  font-size: 1.25rem;
  color: var(--primary-blue);
  margin-bottom: 0.75rem;
}

.news-card h3 a {
  color: inherit;
  text-decoration: none;
  transition: var(--transition);
}

.news-card h3 a:hover {
  color: var(--accent-orange);
}

.news-card p {
  color: var(--medium-gray);
  line-height: 1.6;
  margin-bottom: 1rem;
}

/* 新闻卡片页脚样式 */
.news-card-footer {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-top: 1rem;
}

.news-card .news-date {
  color: var(--medium-gray);
  font-size: 0.875rem;
  font-weight: normal;
}

.news-card .btn-primary {
  font-size: 0.875rem;
  padding: 0.5rem 1rem;
}

/* 新闻卡片区域样式 */
.news-cards-section {
  width: 100%;
}

/* 分页样式 */
.pagination {
  display: flex;
  justify-content: center;
  margin-top: 3rem;
  gap: 0.5rem;
}

.pagination a {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: auto;
  padding: 0 15px;
  height: 40px;
  border-radius: 4px;
  background-color: var(--white);
  color: var(--primary-blue);
  text-decoration: none;
  font-weight: normal;
  transition: var(--transition);
  border: 1px solid var(--light-gray);
}

.pagination a:hover, .pagination a.active {
  background-color: var(--accent-orange);
  color: var(--white);
  border-color: var(--accent-orange);
}

/* 新闻详情页样式 */
.news-detail {
  padding: 4rem 0;
}

.detail-content {
  display: grid;
  grid-template-columns: 3fr 1fr;
  gap: 3rem;
}

.news-header {
  margin-bottom: 2rem;
}

.news-header h1 {
  font-size: 2.5rem;
  color: var(--primary-blue);
  margin-bottom: 1rem;
}

.news-meta {
  display: flex;
  gap: 2rem;
  color: var(--medium-gray);
  font-size: 0.875rem;
}

.news-meta span {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.news-body {
  line-height: 1.8;
  color: var(--dark-gray);
}

.news-body h2 {
  font-size: 1.75rem;
  color: var(--primary-blue);
  margin: 2rem 0 1rem;
}

.news-body h3 {
  font-size: 1.5rem;
  color: var(--primary-blue);
  margin: 1.5rem 0 0.75rem;
}

.news-body p {
  margin-bottom: 1.5rem;
}

.news-body img {
  max-width: 100%;
  height: auto;
  border-radius: 8px;
  margin: 1.5rem 0;
}

/* 相关文章样式 */
.related-news {
  margin-top: 2rem;
}

.related-news h3 {
  font-size: 1.25rem;
  color: var(--primary-blue);
  margin-bottom: 1rem;
  padding-bottom: 0.5rem;
  border-bottom: 2px solid var(--accent-orange);
}

.related-list {
  list-style: none;
}

.related-item {
  margin-bottom: 1rem;
  padding-bottom: 1rem;
  border-bottom: 1px solid var(--light-gray);
}

.related-item:last-child {
  margin-bottom: 0;
  padding-bottom: 0;
  border-bottom: none;
}

.related-item a {
  color: var(--primary-blue);
  text-decoration: none;
  transition: var(--transition);
  font-weight: 500;
}

.related-item a:hover {
  color: var(--accent-orange);
}

/* 分享按钮样式 */
.share-buttons {
  margin-top: 2rem;
  display: flex;
  gap: 1rem;
}

.share-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background-color: var(--light-gray);
  color: var(--medium-gray);
  text-decoration: none;
  transition: var(--transition);
}

.share-btn:hover {
  background-color: var(--accent-orange);
  color: var(--white);
  transform: translateY(-2px);
}

/* 页脚样式 */
.footer {
  background-color: #0f172a;
  color: var(--white);
  padding: 4rem 0 2rem;
}

.footer-content {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 3rem;
  margin-bottom: 2rem;
}

.footer-logo {
  font-size: 1.5rem;
  font-weight: bold;
  margin-bottom: 1rem;
}

.footer-logo span {
  color: var(--accent-orange);
}

.footer-about p {
  color: rgba(255, 255, 255, 0.8);
  line-height: 1.6;
  margin-bottom: 1.5rem;
}

.footer-section h3 {
  font-size: 1.25rem;
  margin-bottom: 1.5rem;
  color: var(--white);
}

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

.footer-links li {
  margin-bottom: 0.75rem;
}

.footer-links a {
  color: rgba(255, 255, 255, 0.8);
  text-decoration: none;
  transition: var(--transition);
}

.footer-links a:hover {
  color: var(--accent-orange);
}

.footer-contact p {
  color: rgba(255, 255, 255, 0.8);
  margin-bottom: 1rem;
  display: flex;
  align-items: flex-start;
  gap: 0.75rem;
}

.footer-bottom {
  text-align: center;
  padding-top: 2rem;
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  color: rgba(255, 255, 255, 0.6);
}

/* 响应式设计 */
@media (max-width: 1024px) {
  .ai-content,
  .advantages-news-content,
  .single-content,
  .news-grid,
  .detail-content {
    grid-template-columns: 1fr;
    gap: 2rem;
  }

  .footer-content {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 768px) {
  /* 汉堡菜单显示 */
  .hamburger {
    display: flex;
  }

  /* 导航链接隐藏 */
  .nav-links {
    position: fixed;
    left: -100%;
    top: 70px;
    flex-direction: column;
    background-color: var(--white);
    width: 100%;
    text-align: center;
    transition: var(--transition);
    box-shadow: 0 10px 27px rgba(0, 0, 0, 0.05);
    padding: 1rem 0;
    gap: 0;
  }

  .nav-links.active {
    left: 0;
  }

  .nav-links li {
    margin: 0.75rem 0;
  }

  /* 下拉菜单在移动端的样式 */
  .dropdown-menu {
    position: static;
    box-shadow: none;
    background-color: var(--light-gray);
  }

  .dropdown:hover .dropdown-menu {
    display: none;
  }

  .dropdown-menu.active {
    display: block;
  }

  /* Banner样式调整 */
  .banner {
    padding: 6rem 0;
  }

  .banner h1 {
    font-size: 2rem;
  }

  .banner p {
    font-size: 1rem;
  }

  /* 服务卡片网格调整 */
  .services-grid {
    grid-template-columns: 1fr;
  }

  /* AI系统样式调整 */
  .ai-text h2,
  .advantages h2,
  .news h2 {
    font-size: 2rem;
  }

  .ai-stats {
    grid-template-columns: 1fr;
  }

  /* 新闻卡片网格调整 */
  .news-cards {
    grid-template-columns: 1fr;
  }

  /* 页脚样式调整 */
  .footer-content {
    grid-template-columns: 1fr;
    text-align: center;
  }

  /* 新闻元信息调整 */
  .news-meta {
    flex-direction: column;
    gap: 0.5rem;
  }
}

@media (max-width: 480px) {
  .banner h1 {
    font-size: 1.75rem;
  }

  .section-title,
  .ai-text h2,
  .advantages h2,
  .news h2,
  .main-content h1,
  .news-header h1 {
    font-size: 1.75rem;
  }

  .container {
    padding: 0 15px;
  }

  .service-card,
  .sidebar,
  .news-card-content {
    padding: 1.25rem;
  }
}

/* 动画效果 */
@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(30px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.fade-in-up {
  animation: fadeInUp 0.6s ease-out forwards;
}

/* 加载动画 */
@keyframes pulse {
  0%, 100% {
    opacity: 1;
  }
  50% {
    opacity: 0.5;
  }
}

.pulse {
  animation: pulse 2s cubic-bezier(0.4, 0, 0.6, 1) infinite;
}