.sdn-banner {
  height: 4.5rem;
  background: url(../images/sst-banner.jpg) no-repeat center top;
  background-size: 100% 100%;
  overflow: hidden;
}
.sdn-banner .dl-container {
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
}
.sdn-banner .aside {
  margin: 1.25rem 0 0;
}
.sdn-banner .aside h3 {
  font-size: 0.44rem;
  color: #333;
  line-height: 0.45rem;
  font-weight: bold;
}
.sdn-banner .aside p {
  font-size: 0.18rem;
  color: #666;
  line-height: 0.3rem;
  margin: 0.2rem 0 0.7rem;
}
.sdn-banner .aside .make {
  width: 2rem;
  height: 0.45rem;
  background: #ff4e00;
  border-radius: 0.05rem;
  font-size: 18px;
  color: #fff;
  line-height: 0.45rem;
  text-align: center;
}

.sdn-banner .aside .make a{
  color: #fff;
}
.sdn-banner .rea {
  width: 4.73rem;
  height: 4.32rem;
}
.sdn-banner .rea img {
  width: 4.73rem;
  height: 4.32rem;
}
.sdn-regionsst {
  height: 22.81rem;
  background: url(../images/sst-reg.jpg) no-repeat center top;
  background-size: 100% 100%;
  padding: 1.05rem 0 0;
  box-sizing: border-box;
  overflow: hidden;
}
.sdn-regionsst ul li {
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  align-items: center;
}
.sdn-regionsst ul li .aside {
  width: 41%;
}
.sdn-regionsst ul li .aside h3 {
  font-size: 0.38rem;
  line-height: 0.4rem;
  font-weight: bold;
  color: #000;
}
.sdn-regionsst ul li .aside p {
  font-size: 0.22rem;
  line-height: 0.4rem;
  color: #6d6d6d;
  margin: 0.4rem 0 0.3rem;
}
.sdn-regionsst ul li .aside .more {
  display: block;
  width: 1.42rem;
  height: 0.36rem;
  border: 1px solid #dfdfdf;
  border-radius: 0.05rem;
  font-size: 0.18rem;
  line-height: 0.36rem;
  padding: 0 0 0 0.18rem;
  box-sizing: border-box;
  background: url(../images/stt-more.png) no-repeat center left;
  background-position-x: 1.14rem;
  letter-spacing: 4px;
  transition: 0.2s ease-out;
}
.sdn-regionsst ul li .aside .more:hover {
  transform: translateY(-4px);
}
.sdn-regionsst ul li:nth-child(1) .plaet {
  position: relative;
  width: 4.63rem;
}
.sdn-regionsst ul li:nth-child(1) .plaet img {
  width: 4.63rem;
}
.sdn-regionsst ul li:nth-child(1) .plaet::before {
  content: "";
  display: block;
  width: 1.12rem;
  height: 1.05rem;
  background: url(../images/sst-dec2-vx.png) no-repeat center;
  background-size: 1.12rem 1.05rem;
  position: absolute;
  top: 0;
  right: 0;
  animation: sx1 3s linear infinite;
}
.sdn-regionsst ul li:nth-child(2) {
  margin: 1.7rem 0 0;
}
.sdn-regionsst ul li:nth-child(2) .aside {
  margin: 0.75rem 0 0;
}
.sdn-regionsst ul li:nth-child(2) .plaet {
  width: 4.86rem;
}
.sdn-regionsst ul li:nth-child(2) .plaet img {
  width: 4.86rem;
}
.sdn-regionsst ul li:nth-child(3) {
  margin: 1.3rem 0 0;
}
.sdn-regionsst ul li:nth-child(3) .aside {
  margin: 0.9rem 0 0;
}
.sdn-regionsst ul li:nth-child(3) .plaet {
  width: 5.33rem;
}
.sdn-regionsst ul li:nth-child(3) .plaet img {
  width: 5.33rem;
}
.sdn-regionsst ul li:nth-child(4) {
  margin: 1.05rem 0 0;
}
.sdn-regionsst ul li:nth-child(4) .aside {
  margin: 0.95rem 0 0;
}
.sdn-regionsst ul li:nth-child(4) .plaet {
  width: 4.9rem;
}
.sdn-regionsst ul li:nth-child(4) .plaet img {
  width: 4.9rem;
}
@media (max-width: 1300px) {
  .dl-container {
    width: 1200px;
  }
}
@media (max-width: 1200px) {
  .dl-container {
    width: 1080px;
  }
}
@media (max-width: 1080px) {
  .dl-container {
    width: 100%;
    padding: 0 2%;
    box-sizing: border-box;
  }
  .sdn-regionsst ul li .aside {
    width: 40%;
  }

  .sdn-banner .aside h3{
    font-size: 0.3rem;
  }

  .sdn-regionsst ul li .aside h3{
    font-size: 0.24rem;
  }

  .sdn-regionsst ul li .aside p{
    font-size: 0.16rem;
  }

  .sdn-regionsst ul li:nth-child(2),.sdn-regionsst ul li:nth-child(4){
    display: flex;
    flex-wrap: wrap;
    justify-content: space-between;
    flex-direction: column-reverse;
  }

}
@media (max-width: 980px) {
  .sdn-banner {
    height: auto;
    padding: 0.3rem 0 0;
  }
  .sdn-banner .dl-container {
    display: block;
  }
  .sdn-banner .aside {
    margin: 0;
  }
  .sdn-banner .rea {
    width: 100%;
    margin: 0 auto;
  }
  .sdn-regionsst {
    height: auto;
    padding: 0.7rem 0 0.3rem;
  }
  .sdn-regionsst ul li {
    display: block;
  }
  .sdn-regionsst ul li .aside {
    width: 90%;
    margin: 0 auto;
  }
  .sdn-regionsst ul li .plaet {
    margin: 0 auto;
  }
  .sdn-regionsst ul li:nth-child(2) {
    margin: 0.5rem 0 0;
  }
  .sdn-regionsst ul li:nth-child(3) .aside {
    margin: 0.5rem 0 0;
  }
  .sdn-regionsst ul li:nth-child(4) {
    margin: 0.5rem 0 0;
  }
}
@media (max-width: 540px) {
  .sdn-regionsst ul li .plaet {
    width: 85% !important;
  }
  .sdn-regionsst ul li .plaet img {
    width: 100% !important;
    height: auto;
    margin-top: 0.3rem;
  }
  .sdn-banner .rea img {
    width: 100% !important;
    height: auto;
    margin-top: 0.5rem;
  }
  .sdn-regionsst ul li:nth-child(2) {
    margin: 0.3rem 0 0;
  }
  .sdn-regionsst ul li:nth-child(3) {
    margin: 0.3rem 0 0;
  }
  .sdn-regionsst ul li:nth-child(3) .aside {
    margin: 0.3rem 0 0;
  }
  .sdn-regionsst ul li:nth-child(4) {
    margin: 0.3rem 0 0;
  }
}
@keyframes sx1 {
  0% {
    transform: translateY(0);
  }
  50% {
    transform: translateY(20px);
  }
  100% {
    transform: translateY(0);
  }
}