/* 全局样式 */
body {
  font-family: 'Microsoft YaHei', Arial, sans-serif;
  color: #333;
}

/* 导航栏样式 */
.navbar {
  background-color: #fff;
  box-shadow: 0 2px 4px rgba(0,0,0,0.1);
}

.navbar-brand {
  font-weight: bold;
  color: #0066cc;
}

.nav-link {
  color: #333;
  margin-right: 1rem;
}

.nav-link:hover {
  color: #0066cc;
}

/* 去掉下拉小三角 */
.dropdown-toggle::after {
  display: none !important;
}

/* 美化下拉菜单 */
.dropdown-menu {
  border: none;
  border-radius: 8px;
  box-shadow: 0 5px 15px rgba(0,0,0,0.1);
  padding: 0.5rem 0;
  margin-top: 0.5rem !important;
}

.dropdown-item {
  padding: 0.75rem 1.5rem;
  transition: all 0.3s ease;
}

.dropdown-item:hover {
  background-color: #f8f9fa;
  color: #0066cc;
}

/* 英雄区域样式 */
.hero-section {
  position: relative;
}

.carousel-caption {
  bottom: 30%;
  text-align: left;
  left: 10%;
  right: 50%;
}

.carousel-caption h1 {
  font-size: 3rem;
  font-weight: bold;
  margin-bottom: 1rem;
  text-shadow: 2px 2px 4px rgba(0,0,0,0.5);
}

.carousel-caption p {
  font-size: 1.2rem;
  margin-bottom: 2rem;
  text-shadow: 1px 1px 2px rgba(0,0,0,0.5);
}

/* 关于我们部分 */
.about-section {
  padding: 6rem 0;
}

.about-section h2 {
  font-size: 2rem;
  font-weight: bold;
  margin-bottom: 2rem;
  text-align: center;
}

/* 服务部分 */
.services-section {
  background-color: #f8f9fa;
  padding: 6rem 0;
}

.services-section h2 {
  font-size: 2rem;
  font-weight: bold;
  margin-bottom: 2rem;
  text-align: center;
}

.service-card {
  background-color: #fff;
  padding: 2rem;
  border-radius: 8px;
  box-shadow: 0 2px 4px rgba(0,0,0,0.1);
  margin-bottom: 2rem;
}

.service-card h3 {
  font-size: 1.5rem;
  font-weight: bold;
  margin-bottom: 1rem;
}

/* 产品部分 */
.products-section {
  padding: 6rem 0;
}

.products-section h2 {
  font-size: 2rem;
  font-weight: bold;
  margin-bottom: 2rem;
  text-align: center;
}

.product-card {
  border: 1px solid #ddd;
  border-radius: 8px;
  overflow: hidden;
  margin-bottom: 2rem;
}

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

.product-card .card-body {
  padding: 1.5rem;
}

.product-card h3 {
  font-size: 1.2rem;
  font-weight: bold;
  margin-bottom: 0.5rem;
}

/* 客户案例部分 */
.cases-section {
  background-color: #f8f9fa;
  padding: 6rem 0;
}

.cases-section h2 {
  font-size: 2rem;
  font-weight: bold;
  margin-bottom: 2rem;
  text-align: center;
}

/* 联系部分 */
.contact-section {
  padding: 6rem 0;
}

.contact-section h2 {
  font-size: 2rem;
  font-weight: bold;
  margin-bottom: 2rem;
  text-align: center;
}

/* 页脚部分 */
.footer {
  background-color: #333;
  color: #fff;
  padding: 3rem 0;
}

.footer h3 {
  font-size: 1.2rem;
  font-weight: bold;
  margin-bottom: 1.5rem;
}

.footer p {
  margin-bottom: 0.5rem;
}

.footer-bottom {
  background-color: #222;
  padding: 1rem 0;
  text-align: center;
}

/* 产品中心样式 */
.product-center-section {
  padding: 6rem 0;
}

.product-center-section h1 {
  font-size: 2.5rem;
  font-weight: bold;
  margin-bottom: 2rem;
  text-align: center;
}

.product-category {
  margin-bottom: 4rem;
}

.product-category h2 {
  font-size: 1.8rem;
  font-weight: bold;
  margin-bottom: 1.5rem;
  padding-bottom: 0.5rem;
  border-bottom: 2px solid #0066cc;
}

.product-item {
  margin-bottom: 2rem;
  border: 1px solid #ddd;
  border-radius: 8px;
  overflow: hidden;
  transition: transform 0.3s ease;
}

.product-item:hover {
  transform: translateY(-5px);
  box-shadow: 0 5px 15px rgba(0,0,0,0.1);
}

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

.product-item .card-body {
  padding: 1.5rem;
}

.product-item h3 {
  font-size: 1.2rem;
  font-weight: bold;
  margin-bottom: 0.5rem;
}