* {
  margin: 0;
  padding: 0;
}

@font-face {
  font-family: 'SourceHanSansCN';
  src: url('../font/SourceHanSansCN-Regular.otf') format('truetype');
}
/**
 * header
 */
header {
  width: 100%;
  position: sticky;
  top: 0;
  z-index: 9999;
  background-color: #fff;
  font-family: 'SourceHanSansCN';
}
header .head {
  width: 1440px;
  height: 106px;
  margin: 0 auto;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

header .head img {
  width: 130px;
  height: 86px;
}

header .head img:hover {
  cursor: pointer;
}
header ul li {
  display: inline-block;
  position: relative;
}

header ul .active a {
  color: #356baf;
}
header ul li a {
  text-decoration: none;
  color: #1c2530;
  font-size: 18px;
  margin: 0 20px;
  font-weight: 500;
  padding: 5px 0;
}

header ul li a:hover {
  color: #356baf;
}

/* 产品中心二级菜单 */
header ul li .submenu {
  position: absolute;
  width: 200px;
  height: auto;
  background-color: #fff;
  box-shadow: 0px 4px 10px 0px rgba(0, 0, 0, 0.3);
  border-radius: 10px 10px 10px 10px;
  top: 45px;
  left: -40px;
  padding: 20px;
  z-index: 999;
  display: none;
}
header ul li ul {
  position: relative;
}

/* header ul li ul::after {
  content: '';
  position: absolute;
  top: -40px;
  left: 65px;
  border-left: 15px solid transparent;
  border-right: 15px solid transparent;
  border-bottom: 20px solid #dee6fd;
} */

header ul li ul li {
  border-bottom: 1px solid #d8d8d8;
}
header ul li ul li a {
  font-size: 15px;
  font-weight: 400;
  color: #3d3d3d !important;
  line-height: 30px;
  width: 120px; /* 可根据需求调整宽度数值，如100%、150px等 */
  display: block; 
}

header ul li ul li a:hover {
  color: #356baf !important;
}

main {
  min-height: calc(100vh - 374px);
}

/**
 * footer
 */
footer {
  width: 100%;
  height: 268px;
  /* background-color: #3b8ee0; */
  background: url(../img/footer.png) no-repeat;
  background-size: 100% 100%;
  font-family: 'SourceHanSansCN';
}
footer .footerBox {
  width: 1440px;
  margin: 0 auto;
  color: #fff;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  position: relative;
}
footer .footerBox .footer_item {
  font-size: 20px;

  text-align: center;
  padding-top: 61px;
}
footer .footerBox .footer_item p {
  margin-bottom: 20px;
}
footer .footerBox .footer_item ul {
  width: 280px;
  text-align: left;
  margin: 0 0 0 140px;
}
footer .footerBox .footer_item ul li {
  display: inline-block;
  margin-right: 50px;
}
footer .footerBox .footer_item ul li a {
  text-decoration: none;
  color: #fff;
  font-size: 18px;
}
footer .footerBox .footer_item img {
  width: 94px;
  height: 88px;
}

footer .footerBox .footer_item .contact {
  display: flex;
  margin-left: 150px;
  font-size: 16px;
}

footer .footerBox .footer_item .contact div {
  width: 280px;
  text-align: left;
}
footer .footerBox .footer_item .contact p {
  margin-bottom: 3px;
}

footer .footerBox .icp {
  position: absolute;
  left: 50%;
  transform: translateX(-50%);
  bottom: -30px;
}