* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  font-family: "Microsoft YaHei", sans-serif;
}

body {
  background: #f5f7fa;
  color: #333;
  line-height: 1.8;
}

/* LOGO + 标题区域 */
.header {
  background: #005b96;
  color: #fff;
  padding: 20px;
  text-align: center;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 20px;
  flex-wrap: wrap;
}

.logo-img {
  height: 80px;
  width: auto;
}

.header-text {
  text-align: left;
}

.header h1 {
  font-size: 22px;
  margin-bottom: 5px;
}

.header p {
  font-size: 14px;
  opacity: 0.9;
}

/* 外滩横幅 */
.banner img {
  width: 100%;
  height: auto;
  display: block;
}

/* 导航栏 */
.nav {
  background: #004b7c;
  text-align: center;
  padding: 14px 0;
}

.nav a {
  color: #fff;
  margin: 0 18px;
  text-decoration: none;
  font-weight: bold;
  font-size: 15px;
}

.nav a:hover {
  color: #a8d8ff;
}

/* 面包屑 */
.breadcrumb {
  max-width: 1100px;
  margin: 20px auto;
  padding: 0 20px;
  font-size: 14px;
  color: #666;
}

.breadcrumb a {
  color: #005b96;
  text-decoration: none;
}

/* 内容容器 */
.container {
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 20px 40px;
}

.main-title {
  font-size: 28px;
  color: #002d4a;
  margin: 30px 0;
  border-bottom: 2px solid #005b96;
  padding-bottom: 10px;
}

/* 企业介绍 */
.about {
  background: #fff;
  padding: 25px;
  border-radius: 8px;
  margin-bottom: 30px;
  box-shadow: 0 2px 8px rgba(0,0,0,0.05);
}

.about p {
  font-size: 15px;
  color: #444;
  margin-bottom: 12px;
}

/* 首页 3列 */
.product-box {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
  margin-bottom: 30px;
}

.product-item {
  background: #fff;
  padding: 22px;
  border-radius: 8px;
  text-align: center;
  transition: 0.3s;
  box-shadow: 0 2px 8px rgba(0,0,0,0.05);
}

.product-item:hover {
  box-shadow: 0 5px 15px rgba(0, 0, 0, 0.08);
}

.product-item h3 {
  color: #005b96;
  margin-bottom: 10px;
}

.product-item a {
  text-decoration: none;
  color: inherit;
}

/* ========== 产品服务页专用样式（你要的效果） ========== */
.service-cards {
  display: flex;
  flex-wrap: wrap;
  gap: 20px;
  margin-top: 20px;
}

.service-card {
  width: calc(33.333% - 14px);
  min-width: 280px;
  background: #fff;
  border-radius: 8px;
  box-shadow: 0 2px 8px rgba(0,0,0,0.05);
  overflow: hidden;
  text-align: center;
  padding: 20px;
}

.service-card img {
  width: 100%;
  height: 180px;
  object-fit: cover;
  border-radius: 6px;
  margin-bottom: 15px;
}

.service-card h3 {
  font-size: 18px;
  color: #002d4a;
  margin-bottom: 10px;
}

.service-card p {
  font-size: 14px;
  color: #666;
  margin-bottom: 15px;
}

.service-card a {
  display: inline-block;
  padding: 8px 20px;
  background: #005b96;
  color: #fff;
  border-radius: 4px;
  text-decoration: none;
}

/* 服务子页 3列 */
.service-list {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}

.service-item {
  background: #fff;
  border-radius: 8px;
  overflow: hidden;
  box-shadow: 0 2px 8px rgba(0,0,0,0.05);
}

.service-item img {
  width: 100%;
  height: 160px;
  object-fit: cover;
}

.service-content {
  padding: 18px;
}

.service-content h3 {
  color: #005b96;
  margin-bottom: 8px;
  font-size: 18px;
}

.service-content p {
  font-size: 14px;
  color: #555;
}

/* 新闻 */
.news-box {
  background: #fff;
  padding: 25px;
  border-radius: 8px;
  margin-bottom: 30px;
  box-shadow: 0 2px 8px rgba(0,0,0,0.05);
}

.news-item {
  padding: 12px 0;
  border-bottom: 1px solid #eee;
}

.news-item a {
  text-decoration: none;
  color: #005b96;
  font-size: 15px;
}

.news-item a:hover {
  text-decoration: underline;
}

.news-time {
  float: right;
  color: #999;
  font-size: 13px;
}

.news-content {
  background: #fff;
  padding: 30px;
  border-radius: 8px;
  line-height: 2;
  font-size: 15px;
  box-shadow: 0 2px 8px rgba(0,0,0,0.05);
}

/* 底部 */
.footer {
  background: #002d4a;
  color: #fff;
  text-align: center;
  padding: 35px 20px;
  margin-top: 40px;
  font-size: 14px;
  line-height: 1.8;
}

.footer a {
  color: #fff;
  text-decoration: none;
  margin: 0 10px;
}

.footer a:hover {
  color: #a8d8ff;
}

.footer .official-link {
  color: #add8e6;
  text-decoration: underline;
}

/* 响应式 */
@media (max-width:768px){
  .header{flex-direction:column;text-align:center}
  .header-text{text-align:center}
  .logo-img{height:60px}
  .nav a{margin:0 10px;font-size:14px}
  .service-card{width:100%}
  .product-box,
  .service-list {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 480px) {
  .product-box,
  .service-list {
    grid-template-columns: 1fr;
  }
}