/* 全局样式 */
body {
  font-family: Arial, sans-serif;
  color: #333;
  background-color: #f8f9fa;
}

/* 导航栏样式 */
.navbar {
  background-color: #003366 !important; /* 深蓝色品牌主色 */
}
.navbar-brand, .nav-link {
  color: #ffffff !important;
}
.nav-link.active {
  font-weight: bold;
  border-bottom: 2px solid #fff;
}
.navbar-toggler-icon {
  background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 30 30'%3e%3cpath stroke='rgba(255, 255, 255, 1)' stroke-linecap='round' stroke-miterlimit='10' stroke-width='2' d='M4 7h22M4 15h22M4 23h22'/%3e%3c/svg%3e");
}

/* 标题栏样式 */
.header {
  background-color: #0099cc;
  color: #fff;
  padding: 20px 0;
  text-align: center;
  margin-bottom: 30px;
}
.header h1 {
  margin: 0;
  font-size: 28px;
}
.header p {
  margin: 5px 0 0;
  font-size: 16px;
  opacity: 0.9;
}

/* 产品列表样式 */
.product-list {
  list-style: none;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 20px;
}
.product-item {
  background: #fff;
  padding: 15px;
  border-radius: 8px;
  box-shadow: 0 2px 5px rgba(0,0,0,0.1);
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
}
.product-item img {
  width: 100%;
  max-height: 200px;
  object-fit: cover;
  border-radius: 4px;
  margin-bottom: 10px;
}
.product-item h3 {
  font-size: 16px;
  margin: 0 0 5px;
  color: #003366;
}
.product-item p {
  margin: 0;
  color: #666;
  font-weight: bold;
}

/* 视频区域样式 */
.video-embed {
  margin-bottom: 20px;
}
.video-embed iframe {
  width: 100%;
  border-radius: 8px;
}
.video-embed p {
  margin-top: 10px;
  text-align: center;
  color: #333;
}