body {
  box-sizing: content-box;
  max-width: 1920px;
  
  min-width: 1900px;
  margin: 0 auto;
  
}
body .swiper-container,
body .swiper-container2 {
  max-width: 100%;
  
}
body img {
  max-width: 100%;
  
  height: auto;
  
}
.head {
  display: flex;
  justify-content: space-between;
  align-items: center;
  cursor: pointer;
  height: 100px;
  padding: 0 360px;
}
.head .tabs {
  display: flex;
  justify-content: space-around;
  font-size: 16px;
  height: 100%;
  line-height: 100px;
}
.head .tabs div {
  margin-left: 60px;
  height: 100%;
}
.head .tabs div:hover {
  border-bottom: 4px solid #fb0b0b;
  color: #fb0b0b;
}
.head .tabs div:hover a {
  color: #fb0b0b;
}
.head .tabs div a {
  color: #333;
  text-decoration: none;
}
.head .tabs .active {
  border-bottom: 4px solid #fb0b0b;
  color: #fb0b0b;
}
.product {
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: 100px 360px;
}
.product .title {
  font-size: 32px;
  font-weight: bold;
}
.product .line {
  width: 64px;
  height: 4px;
  background: #fb0b0b;
  margin-top: 16px;
}
.product .content {
  font-size: 16px;
  color: #666666;
  margin-top: 50px;
}
.product .content span {
  display: inline-block;
  margin: 10px 0;
  line-height: 32px;
}
.certificate {
  display: flex;
  flex-direction: column;
  align-items: center;
  background-image: url('../image/资质证书背景.png');
  
  background-size: cover;
  
  background-position: center;
  
  background-repeat: no-repeat;
  
  width: 100%;
  
  height: 594px;
  
}
.certificate .title {
  padding-top: 100px;
  font-size: 32px;
  font-weight: bold;
}
.certificate .line {
  width: 64px;
  height: 4px;
  background: #fb0b0b;
  margin-top: 16px;
}
.certificate .content {
  width: 100%;
  margin-top: 90px;
  display: flex;
  padding: 0 615px;
  justify-content: space-between;
}
.certificate .content .item div {
  text-align: center;
  margin-top: 40px;
  font-size: 14px;
}
.foot {
  display: flex;
  flex-direction: column;
  background: #24323e;
  padding: 40px 360px 20px;
  color: #fff;
}
.foot .top {
  display: flex;
  justify-content: space-between;
  align-items: center;
}
.foot .top .left {
  display: flex;
  flex-direction: column;
  font-size: 20px;
  line-height: 40px;
}
.foot .top .left > span:nth-child(2) {
  font-weight: bold;
}
.foot .top .left > span:nth-child(3),
.foot .top .left > span:nth-child(4) {
  font-size: 16px;
}
.foot .top .left a {
  color: #fff;
  text-decoration: none;
}
.foot .top .right div {
  display: flex;
  align-items: center;
  font-size: 14px;
  margin-top: 5px;
}
.foot .top .right div img {
  margin-right: 4px;
}