.aboutus_box {
  background: #fafafa;
  box-sizing: border-box;
}
.banner_div {
  /* background: url(../images/banner.png) no-repeat;
  background-size: 100% 100%;
  height: 300px; */
  position: relative;
}
.banner_div img {
  width: 100%;
}
.banner_div > div {
  position: absolute;
  width: 100%;
  text-align: center;
  color: #fff;
  z-index: 1;
  font-size: 18px;
  top: 30%;
}
.banner_div > div > p:first-child {
  font-size: 36px;
  margin-bottom: 9px;
}
.description {
  padding-top: 46px;
  background: url(../images/bg.png) no-repeat;
  background-size: 100% 100%;
  padding-bottom: 26px;
}
.description > .context {
  max-width: 1200px;
  margin: 0 auto;
}
.aboutus_title {
  font-size: 28px;
  color: #222;
  text-align: center;
}
.description > .context > div {
  font-size: 14px;
  margin-top: 30px;
  line-height: 22px;
}
.description > .context > div > span {
  padding: 20px 106px;
  background: #fafafa;
  border: 1px solid #d9d9d9;
  border-radius: 2px;
  margin-left: 50px;
  float: right;
}
.product {
  padding-top: 20px;
  max-width: 1200px;
  margin: 0 auto;
  display: flex;
  flex-wrap: wrap;
}

.product > li:not(.product > li:first-child) {
  max-width: 293px;
  background: #ffffff;
  border-right: 1px solid #eeeeee;
  padding: 25px 30px;
}
.product > li > a {
  font-size: 16px;
  color: #222;
}
.product > li > p {
  margin-top: 11px;
  font-size: 14px;
  line-height: 24px;
  color: #666666;
}
.product > li > a:hover{
  color: #ff6600;
}
.product > li:nth-child(2) >a:hover img{
  content: url(../images/rush_on.png);
}
.product > li:nth-child(3) >a:hover img{
  content: url(../images/bid_on.png);
}
.product > li:nth-child(4) >a:hover img{
  content: url(../images/ykj_on.png);
}
.product > li:first-child {
  width: 320px;
  padding: 24px 16px;
  background: url(../img/box.png) no-repeat;
  background-size: 100% 100%;
}
.product > li:first-child > p {
  font-size: 14px;
  color: #fff;
}
.product > li:first-child > a {
  padding: 5px 22px;
  background: #fff;
  color: #ff6600;
  font-size: 14px;
  border-radius: 2px;
  display: inline-block;
  margin-top: 28px;
}
.advantage{
  margin: 20px auto;
  max-width: 1200px;
  background: #fff;
  position: relative;
  padding: 47px 20px 10px ;
}
.advantage::before{
  position: absolute;
  top: 0;
  left: 0;
  content: ' ';
  width: 136px;
  height: 103px;
  background: url(../images/polygon.png) no-repeat;
  background-size: 100% 100%;
}

.advantage_ul{
  display: flex;
  margin-bottom: 0;
}
.advantage_ul>li:first-child{
  padding-top: 20px;
  font-size: 14px;
  color: #555555;
  margin-right: 30px;
  line-height: 22px;
}
.advantage_ul>li:first-child>a{
  background: #FF6600;
  border-radius: 2px;
  padding: 6px 20px;
  color: #fff;
  display: inline-block;
  margin-top: 40px;
}
.advantage_ul>li:last-child{
   padding: 10px;
   position: relative;
}
.advantage_ul>li:last-child::before{
  position: absolute;
  top: 0;
  right: 0;
  content: ' ';
  width: 96px;
  height: 73px;
  background: url(../images/polygon2.png) no-repeat;
  background-size: 100% 100%;
  z-index: 0;
}
.advantage_ul>li:last-child>img{
  position: relative;
  z-index: 1;
}
.classify_ul{
  margin: 0 auto;
  max-width: 1200px;
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
}
.classify_ul>li{
  width: 376px;
  background: #fff;
  padding: 25px 33px;
}

.classify_ul>li>p:nth-child(2){
  color: #222222;
  font-size: 18px;
  font-family: 'Actor';
font-style: normal;
  margin: 20px 0 6px;
}
.classify_ul>li>p:nth-child(3){
  color: #666666;
  font-size: 14px;
}
.classify_ul>li:hover{
  background: url(../img/di.png) no-repeat;
  background-size: 100% 100%;
}
.bottom_content{
  margin-top: 20px;
  background: url(../images/di_bg.png) no-repeat;
  background-size: 100% 100%;
  padding: 0 10px;
}
.neirong{
  max-width: 1200px;
  margin: 0 auto;
  padding-top: 20px;
}
.neirong>p:nth-child(1){
  font-size: 18px;
  color: #222;
}
.neirong>p:nth-child(2){
  font-size: 14px;
  color: #666666;
  margin-top: 8px;
}
.bottom_ul{
  display: flex;
  flex-wrap: wrap;
  margin-top: 34px;
  margin-bottom: 0;
}
.bottom_ul>li{
  width: 240px;
  margin-bottom: 24px;
}
.bottom_ul>li a{
  display: block;
  color: #FF6600;
  font-size: 14px;
  border-left: 1px solid #f60;
  padding-left: 10px;
}
.nowcn{
  color: #f60;
}
.nowcn:hover{
  color: #ed711f;
}
@media (min-width:750px) {
  .more{display: none;}
}
@media (max-width:1200px) {
  .product > li{
    width: 300px;
    max-width: 300px !important;
  }
}
@media (max-width:750px) {
  .banner_div img {
    content: url(../images/banner_mc.png);
  }
  .banner_div > div {
    font-size: 14px;
  }
  .banner_div > div > p:first-child {
    font-size: 20px;
    margin-bottom: 5px;
  }
  .description {
    padding-top: 24px;
  }
  .aboutus_title{
    font-size: 18px;
  }
  .description > .context > div {
    margin-top: 18px;
    padding: 0 15px;
  }
  .description > .context > div > span {
    float: none;
    margin: 0;
    display: block;
    width: 100%;
    height: 56px;
    margin-bottom: 14px;
    padding: 13px 0;
    text-align: center;
  }
  .product{
    margin-top: 10px;
    padding: 15px 15px 9px;
    background: #fff;
  }
  .product > li{
    width: 50% !important;
    max-width: none !important;
    margin-bottom: 8px;
    box-shadow: 0px 2px 4px 0px rgba(0,0,0,0.06);
  }
  .advantage{
    margin: 10px auto;
    padding: 15px;
  }
  .advantage_ul {
    flex-direction: column;
  }
  .advantage_ul>li{
    margin-right: 0;
  }
  .advantage_ul>li:first-child{
    order: 2;
    padding-top: 0px;
     margin-right: 0px;
  }
  .advantage_ul>li:first-child>a {
    margin-top: 16px;
  }
  .advantage_ul>li:last-child{
    order: 1;
     padding: 10px 0;
  }
  .advantage_ul>li:last-child>img{
    width: 100%;
    max-height: 180px;
  }
  .advantage_ul>li:last-child::before {
    right: -10px;
  }
  .classify_ul{
    padding:0 15px;
  }
  .classify_ul>li{
    width: 100%;
    margin-bottom: 8px;
    padding: 14px 18px ;
  }
  .classify_ul>li>p:nth-child(2){
    font-size: 16px;
  }

  .classify_ul>li:last-child{
    margin-bottom: 0;
  }
  .bottom_content{
    margin-top: 10px;
    padding: 0 15px;
    background: url(../images/di_bg_mc.png) no-repeat;
    background-size: 100% 100%;
  }
  .neirong>p:nth-child(1) {
    font-size: 16px;
  }
  .bottom_ul{
    margin-top: 16px;
  }
  .bottom_ul>li {
    width: 100%;
    margin-bottom: 15px;
  }
  .bottom_ul>li>a{
    padding: 0;
    display: initial;
    border: none;
  }
  .bottom_ul>li:nth-child(n+5){
    display: none;
  }
  .more{
    margin-bottom: 16px;
    font-size: 14px;
    color: #1877F2;
    display: inline-block;
  }
}

@media (max-width:500px) {
  .product{
    flex-direction: column;
  }
  .product > li{
    width: 100% !important
  }
  .product > li:not(.product > li:first-child) {
    padding: 12px;
  }
  .product > li>a{
    line-height: 28px;
  }
  .product > li>a>img{
    width: 30px;
  }
  .product > li > p {
    margin-top: 7px;
  }
}