.banner {
  height: 500px;
  background: url(../images/banner_2.png) no-repeat 50% / cover;
}
.main .sub_nav {
  height: 80px;
  background: #F6F9FD;
}
.main .sub_nav li {
  float: left;
  width: 20%;
  height: 80px;
}
.main .sub_nav li a {
  display: block;
  text-align: center;
  font-size: 18px;
  font-weight: 400;
  color: #999999;
  line-height: 80px;
}
.main .sub_nav li.on,
.main .sub_nav li:hover {
  background-color: #E9EEF4;
}
.main .sub_nav li.on a,
.main .sub_nav li:hover a {
  color: #333333;
}
.main .content {
  padding-top: 80px;
  margin-bottom: 120px;
}
.main .content .title {
  margin-bottom: 80px;
  width: 100%;
}
.content .title>.img {
  width: 80px !important;
  height: 80px !important;
  background: #0C68DB;
}
.content .title>.img img {
  width: 100%;
  height: 100%;
  display:none;
}
.content .title h2 {
  margin: 0 0 10px 10px;
  font-size: 28px;
  font-weight: 400;
  color: #111111;
}
.content .title h3 {
  margin: 0;
  margin-left: -70px;
  margin-top: -18px;
  font-size: 24px;
  font-weight: 400;
  color: #DEDEDE;
  text-transform: uppercase;
}
.content .title h3:first-letter{
  font-size:48px;
  color:#F7D692;
}
.main .content .title .text {
  width: auto !important;
}
.main .content .group_profile .text {
  margin-right: 80px;
  width: 700px;
}
.main .content .group_profile .text p {
  margin-bottom: 5px;
  text-indent: 36px;
  font-size: 18px;
  font-weight: 400;
  color: #666666;
  line-height: 40px;
}
.main .content .group_profile .text .article {
  margin-bottom: 5px;
  text-indent: 36px;
  font-size: 18px;
  font-weight: 400;
  color: #666666;
  line-height: 40px;
}
.main .content .group_profile .img {
  width: 700px;
  height: 440px;
}
.main .content .group_profile .img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}
.main .content .history .text,
.main .content .group_honour .text {
  margin-right: 70px;
  width: 700px;
}
.main .content .history .text .list li,
.main .content .group_honour .text .list li {
  position: relative;
  padding-left: 50px;
  width: 500px;
}
.main .content .history .text .list li em,
.main .content .group_honour .text .list li em,
.main .content .history .text .list li p,
.main .content .group_honour .text .list li p {
  font-size: 18px;
  font-weight: 400;
  color: #666666;
  line-height: 40px;
}
.main .content .history .text .list li p,
.main .content .group_honour .text .list li p {
  width: 450px;
  word-wrap: break-word;
}
.main .content .history .text .list li em,
.main .content .group_honour .text .list li em {
  margin-right: 20px;
}
.main .content .history .text .list li:before,
.main .content .group_honour .text .list li:before {
  position: absolute;
  left: 10px;
  top: 10px;
  content: '';
  display: block;
  width: 20px;
  height: 20px;
  border-radius: 50%;
  background-color: #E5E7EC;
}
.main .content .history .text .list li:after,
.main .content .group_honour .text .list li:after {
  position: absolute;
  left: 15px;
  top: 15px;
  content: '';
  display: block;
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background-color: #FFFFFF;
}
.main .content .history .img,
.main .content .group_honour .img {
  width: 700px;
  height: 440px;
}
.main .content .history .img img,
.main .content .group_honour .img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}
.main .content .structure .structure_img {
  width: 100%;
}
.main .content .structure .structure_img img {
  width:100%;
}
.main .content .cases ul {
  padding:5px
}
.main .content .cases li {
  float: left;
  margin-right: 85px;
  width: 460px;
  background: #FFFFFF;
  transition: 0.4s;
  border: 1px solid #DFE5ED;
  border-radius: 10px;
  padding: 30px;
  margin-bottom:50px;
}
.main .content .cases li:hover {
  box-shadow: 0px 0px 10px 0px #cbcbcb;
}
.main .content .cases li img {
  display: block;
  margin-bottom: 20px;
  width: 100%;
  height: 224px;
  object-fit: cover;
}
.main .content .cases li span {
  display: block;
  font-size: 20px;
  font-weight: 400;
  color: #111111;
  line-height: 1.5;
  text-align: center;
  width: 100%;
  text-overflow: ellipsis;
  white-space: nowrap;
  overflow: hidden;
}
.main .content .cases li:hover span {
  color: #0c68db;
}
.main .content .cases li:nth-child(3n) {
  margin-right: 0;
}

.main .content .member p {
  font-size: 18px;
  font-weight: 400;
  color: #333333;
  line-height: 40px;
}
.main .content .member img {
  margin-top: 80px;
  max-width: 100%;
  display: block;
  margin: 30px auto;
}
.main .content .tender_detail h1 {
  margin: 0 0 22px 0;
  text-align: center;
  font-size: 32px;
  font-weight: 300;
  color: #111111;
  line-height: 40px;
}
.main .content .tender_detail .tips {
  font-size: 16px;
  font-weight: 300;
  color: #999999;
  line-height: 32px;
  display: block;
  text-align: center;
}
.main .content .tender_detail img {
  display:block;
  margin:20px auto;
  max-width:100%;
}
.main .content .tender_detail p {
  margin: 70px 0;
  font-size: 16px;
  font-weight: 300;
  color: #666666;
  line-height: 35px;
}
.main .content .tender_detail button {
  margin: 0 auto;
  display: block;
  width: 90px;
  height: 40px;
  background: #df1717;
  border-radius: 3px;
  border: none;
  font-size: 16px;
  font-weight: 400;
  color: #EBEEF6;
  line-height: 34px;
  cursor: pointer;
}
.main .content .tender_detail button:hover {
  opacity: 0.9;
}
.main .contactUs .map {
  margin-right: 80px;
  width: 900px;
  height: 500px;
}
.main .contactUs .map img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}
.main .contactUs .text {
  width: 500px;
}
.main .contactUs .text .top {
  margin-bottom: 80px;
}
.main .contactUs .text .top h2 {
  margin: 0;
  font-size: 28px;
  font-weight: 400;
  color: #111111;
}
.main .contactUs .text .top h3 {
  margin: 10px 0 0 0;
  font-size: 24px;
  font-weight: 400;
  color: #DA251D;
}
.main .contactUs .text p {
  font-size: 18px;
  font-weight: 300;
  color: #111111;
  line-height: 60px;
  word-wrap: break-word;
}

.main .post_list {

}

.main .post_list ul {
  overflow: hidden;
}

.main .post_list li {
  width: calc(50% - 40px);
  float: left;
  border-bottom: 1px solid #E8E8E8;
  margin-bottom: 60px;
  padding: 20px;
  border-radius: 4px;
}

.main .post_list li:hover {
  background:#F6F9FD;
}

.main .post_list li:nth-child(odd) {
  margin-right: 80px;
}

.main .post_list li h4 {
  font-size: 24px;
  color: #333;
  margin: 0;
}

.main .post_list li h5 {
  font-size: 20px;
  color: #666;
  margin: 30px 0;
}

.main .post_list li p {
  font-size: 18px;
  color: #999;
  margin-bottom: 20px;
  line-height: 1.6;
  height: 56px;
  display: -webkit-box;
  -webkit-box-orient: vertical;
  -webkit-line-clamp: 2;
  overflow: hidden;
}

.main .post_list li b {
  font-size: 14px;
  color: #0c68db;
  display: block;
  text-align: right;
}

.main .post_list li b img {
  margin-left: 10px;
}

.main .post_mask {
  position: fixed;
  width: 100%;
  height: 100%;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  z-index: 999;
  display: none;
}

.main .post_mask .mask_wrap {
  position: absolute;
  width: 100%;
  height: 100%;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background-color: rgba(0,0,0,0.5);
  z-index: 1;
}

.main .post_mask .mask_con {
  width: 800px;
  height: 700px;
  padding: 40px;
  background-color: #fff;
  border-radius: 5px;
  position: absolute;
  top: 50%;
  z-index: 2;
  left: 50%;
  transform: translate(-50%,-50%);
}

.main .post_mask .mask_con h4 {
  font-size: 24px;
  color: #333;
  margin: 0;
}

.main .post_mask .mask_con h5 {
  font-size: 20px;
  color: #666;
  margin: 30px 0;
}

.main .post_mask .mask_con p {
  font-size: 18px;
  color: #333;
  margin-bottom: 20px;
  line-height: 1.6;
  max-height: 520px;
  overflow-y: auto;
}