.header {
  background: #f5f5f5;
  padding: 15px 0;
}

.logo {
  width: 1000px;
  margin: 0 auto;
  display: flex;
  align-items: center;
}

.logo-img {
  height: 45px;
  margin-right: 10px;
}

.company-name {
  margin: 0;
  font-size: 20px;
  font-family: "Microsoft YaHei", sans-serif;
  color: #333;
  font-weight: normal;
}

.nav {
  background: linear-gradient(to bottom, #0033cc, #0066ff);
  height: 40px;
  line-height: 40px;
}

.nav-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  justify-content: center;
}

.nav-list li {
  position: relative;
  padding: 0 25px;
}

.nav-list li:not(:last-child):after {
  content: '';
  position: absolute;
  right: 0;
  top: 50%;
  transform: translateY(-50%);
  width: 1px;
  height: 14px;
  background: #fff;
}

.nav-list a {
  color: #fff;
  text-decoration: none;
  font-size: 14px;
  font-family: "Microsoft YaHei", sans-serif;
}

/* 主要内容区域样式 */
.main {
    background: #f5f5f5;
    padding: 20px 0;
}

.container {
    width: 1000px;
    margin: 0 auto;
    display: flex;
    gap: 20px;
}

/* 左侧栏样式 */
.sidebar {
    width: 250px;
    flex-shrink: 0;
}

.sidebar-title {
    background: linear-gradient(to bottom, #0066cc, #0033cc);
    color: #fff;
    margin: 0;
    padding: 10px;
    font-size: 16px;
}

.product-list {
    list-style: none;
    margin: 0;
    padding: 0;
    background: #fff;
}

.product-list li {
    border-bottom: 1px solid #eee;
}

.product-list a {
    display: block;
    padding: 8px 10px;
    color: #333;
    text-decoration: none;
    font-size: 14px;
}

.product-list .icon {
    color: #0066cc;
    margin-right: 5px;
}

.contact-info {
    margin-top: 20px;
}

.contact-content {
    background: #fff;
    padding: 10px;
}

.contact-content p {
    margin: 5px 0;
    font-size: 14px;
}

/* 右侧内容样式 */
.main-content {
    flex: 1;
}

.product-categories {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    margin-bottom: 20px;
}

.category-item {
    position: relative;
    width: calc((100% - 40px) / 5); /* 5列布局,减去间隔的宽度 */
}

.category-item img {
    width: 100%;
    height: 120px;
    object-fit: cover;
    display: block;
}

.category-name {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    background: rgba(0, 0, 0, 0.6);
    color: #fff;
    text-align: center;
    padding: 5px 0;
    font-size: 14px;
}

.section-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    background: linear-gradient(to bottom, #0066cc, #0033cc);
    padding: 10px;
    margin-bottom: 10px;
}

.section-header h2 {
    color: #fff;
    margin: 0;
    font-size: 16px;
}

.more {
    color: #fff;
    text-decoration: none;
    font-size: 12px;
}

.news-list {
    list-style: none;
    margin: 0;
    padding: 10px;
    background: #fff;
}

.news-list li {
    display: flex;
    justify-content: space-between;
    padding: 8px 0;
    border-bottom: 1px dashed #ddd;
}

.news-list a {
    color: #333;
    text-decoration: none;
    font-size: 14px;
}

.date {
    color: #999;
    font-size: 12px;
}

.intro-content {
    background: #fff;
    padding: 10px;
    display: flex;
    gap: 15px;
}

.intro-img {
    width: 200px;
    height: 150px;
    object-fit: cover;
}

.intro-content p {
    margin: 0;
    font-size: 14px;
    line-height: 1.6;
    color: #333;
}

.footer {
    border-top: 2px solid #0066cc;
    padding: 15px 0;
    background: #f5f5f5;
    color: #666;
    font-size: 12px;
}

.footer-content {
    width: 1000px;
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.footer-left {
    flex: 1;
}

.footer-center {
    flex: 1;
    text-align: center;
}

.footer-right {
    flex: 1;
    text-align: right;
}