/* 数码产品网站样式 - 参考breo.com风格 */
/* 现代简约、科技感设计 */

:root {
  --primary-color: #2c3e50;
  --secondary-color: #3498db;
  --accent-color: #e74c3c;
  --bg-color: #ffffff;
  --text-color: #333333;
  --light-gray: #f8f9fa;
  --border-color: #e0e0e0;
}

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

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

/* 导航栏 */
.header {
  background: #ffffff;
  box-shadow: 0 2px 10px rgba(0,0,0,0.1);
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
}

.nav-container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 20px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  height: 70px;
}

.logo {
  font-size: 24px;
  font-weight: bold;
  color: var(--primary-color);
  text-decoration: none;
}

.nav-menu {
  display: flex;
  list-style: none;
  gap: 30px;
}

.nav-menu a {
  text-decoration: none;
  color: var(--text-color);
  font-weight: 500;
  transition: color 0.3s;
}

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

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

.banner-item {
  width: 100%;
  height: 500px;
  background-size: cover;
  background-position: center;
  display: flex;
  align-items: center;
  justify-content: center;
}

.banner-content {
  text-align: center;
  color: white;
  background: rgba(0,0,0,0.5);
  padding: 40px;
  border-radius: 10px;
}

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

.banner-content p {
  font-size: 20px;
  margin-bottom: 30px;
}

.btn {
  display: inline-block;
  padding: 12px 30px;
  background: var(--secondary-color);
  color: white;
  text-decoration: none;
  border-radius: 5px;
  transition: background 0.3s;
}

.btn:hover {
  background: #2980b9;
}

/* 产品展示 */
.section {
  padding: 80px 20px;
}

.section-title {
  text-align: center;
  font-size: 36px;
  margin-bottom: 50px;
  color: var(--primary-color);
}

.product-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 30px;
  max-width: 1200px;
  margin: 0 auto;
}

.product-item {
  background: white;
  border-radius: 10px;
  overflow: hidden;
  box-shadow: 0 5px 15px rgba(0,0,0,0.1);
  transition: transform 0.3s, box-shadow 0.3s;
}

.product-item:hover {
  transform: translateY(-5px);
  box-shadow: 0 10px 25px rgba(0,0,0,0.15);
}

.product-item img {
  width: 100%;
  height: 250px;
  object-fit: cover;
}

.product-item h3 {
  padding: 20px;
  font-size: 20px;
  color: var(--primary-color);
}

.product-item p {
  padding: 0 20px 20px;
  color: #666;
}

/* 新闻列表 */
.news-list {
  max-width: 1200px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 30px;
}

.news-item {
  background: white;
  padding: 30px;
  border-radius: 10px;
  box-shadow: 0 5px 15px rgba(0,0,0,0.1);
}

.news-date {
  color: #999;
  font-size: 14px;
  margin-bottom: 10px;
}

.news-item h3 {
  font-size: 20px;
  margin-bottom: 15px;
  color: var(--primary-color);
}

.news-item p {
  color: #666;
  line-height: 1.8;
}

/* 页脚 */
.footer {
  background: var(--primary-color);
  color: white;
  padding: 60px 20px 30px;
  margin-top: 80px;
}

.footer-content {
  max-width: 1200px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 40px;
}

.footer-section h4 {
  font-size: 18px;
  margin-bottom: 20px;
}

.footer-section ul {
  list-style: none;
}

.footer-section ul li {
  margin-bottom: 10px;
}

.footer-section a {
  color: #bdc3c7;
  text-decoration: none;
  transition: color 0.3s;
}

.footer-section a:hover {
  color: white;
}

.footer-bottom {
  text-align: center;
  padding-top: 30px;
  margin-top: 40px;
  border-top: 1px solid rgba(255,255,255,0.1);
  color: #bdc3c7;
}

/* 响应式设计 */
@media (max-width: 768px) {
  .nav-menu {
    display: none;
  }
  
  .banner-content h2 {
    font-size: 32px;
  }
  
  .section-title {
    font-size: 28px;
  }
  
  .product-grid,
  .news-list {
    grid-template-columns: 1fr;
  }
}