/* 基础样式 */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
  line-height: 1.6;
  color: #333;
}

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

.section {
  padding: 60px 0;
}

.section-title {
  text-align: center;
  font-size: 32px;
  margin-bottom: 40px;
  color: #333;
}

/* 头部 */
.header {
  background: #fff;
  box-shadow: 0 2px 8px rgba(0,0,0,0.1);
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
}

.header .container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  height: 70px;
}

.header h1 {
  font-size: 24px;
  color: #1890ff;
}

.nav a {
  margin-left: 30px;
  text-decoration: none;
  color: #333;
  transition: color 0.3s;
}

.nav a:hover {
  color: #1890ff;
}

/* 轮播图 */
.banner {
  margin-top: 70px;
  height: 500px;
  overflow: hidden;
  position: relative;
}

.banner-slides .slide {
  display: none;
}

.banner-slides .slide.active {
  display: block;
}

.banner-slides .slide img {
  width: 100%;
  height: 500px;
  object-fit: cover;
}

.banner-content {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  text-align: center;
  color: #fff;
}

.banner-content h2 {
  font-size: 48px;
  margin-bottom: 20px;
}

.banner-content p {
  font-size: 20px;
}

/* 新闻 */
.news-list {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 30px;
}

.news-item {
  background: #f5f5f5;
  padding: 20px;
  border-radius: 8px;
}

/* 解决方案 */
.solutions-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
}

.solution-card {
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  padding: 40px 20px;
  border-radius: 8px;
  text-align: center;
  color: #fff;
}

/* 合作伙伴 */
.partners-grid {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 20px;
}

.partner-logo {
  background: #f5f5f5;
  padding: 30px;
  text-align: center;
  border-radius: 8px;
}

/* 底部 */
.footer {
  background: #333;
  color: #fff;
  padding: 30px 0;
  text-align: center;
}