.top .sns {
  float: left;
  margin-top: -4px;
}
.top .sns li {
  position: relative;
  float: left;
  margin-right: 5px;
}
.top .sns i {
  display: inline-block;
  width: 30px;
  height: 30px;
}
.top .sns .icon-fb {
  background: url(../img/sns_fb_topbar.png) no-repeat center;
}
.top .sns .icon-wx {
  background: url(../img/sns_we_topbar.png) no-repeat center;
}
.top .sns .icon-linkin {
  background: url(../img/sns_linkin_topbar.png) no-repeat center;
}
.top .sns .icon-ali {
  background: url(../img/sns_al_topbar.png) no-repeat center;
}
.top .sns .wx-dropdown {
  position: absolute;
  z-index: 1000;
  top: 100%;
  left: 50%;
  display: none;
  margin-left: -70px;
  width: 140px;
  height: 150px;
  padding-top: 12px;
  background: url(../img/qrcode-bg-topbar.png);
}
.top .sns .wx-dropdown img {
  display: block;
  margin: 10px auto;
  width: 114px;
}
.top .sns .wx:hover .wx-dropdown {
  display: block;
}
.banner .carousel-inner .item {
  height: 488px;
  background-position: center;
  background-repeat: no-repeat;
}
.banner .carousel-inner .item a {
  display: block;
  height: 100%;
}
.banner .carousel-indicators {
  bottom: 10px;
  text-align: left;
  width: 1120px;
  left: 50%;
  margin-left: -560px;
}
.banner .carousel-indicators li {
  width: 20px;
  height: 2px;
  margin: 0 4px 0 0;
  border: none;
  border-radius: 0;
  background: rgba(255, 255, 255, 0.3);
}
.banner .carousel-indicators li.active {
  background: #fff;
}
.side-nav {
  position: fixed;
  top: 50%;
  left: 0;
  background: #fff;
  transform: translateY(-50%);
  border-radius: 0 5px 5px 0;
  box-shadow: 0 0 10px 0 rgba(0, 0, 0, 0.15);
}
.side-nav a {
  display: block;
  padding: 15px;
}
.side-nav i {
  display: block;
  width: 20px;
  height: 20px;
  background-size: contain;
  background-position: center;
  background-repeat: no-repeat;
}
.side-nav .icon-top {
  background-image: url("../img/qknav_top.png");
}
.side-nav .icon-about {
  background-image: url("../img/qknav_aboutus.png");
}
.side-nav .icon-equipment {
  background-image: url("../img/qknav_syzb.png");
}
.side-nav .icon-marketing {
  background-image: url("../img/qknav_wangdian.png");
}
.side-nav .icon-news {
  background-image: url("../img/qknav_news.png");
}
.side-nav .icon-phone {
  background-image: url("../img/qknav_phone.png");
}
.side-nav li.active .icon-top,
.side-nav li:hover .icon-top {
  background-image: url("../img/qknav_top_fouc.png");
}
.side-nav li.active .icon-about,
.side-nav li:hover .icon-about {
  background-image: url("../img/qknav_aboutus_fouc.png");
}
.side-nav li.active .icon-equipment,
.side-nav li:hover .icon-equipment {
  background-image: url("../img/qknav_syzb_fouc.png");
}
.side-nav li.active .icon-marketing,
.side-nav li:hover .icon-marketing {
  background-image: url("../img/qknav_wangdian_fouc.png");
}
.side-nav li.active .icon-news,
.side-nav li:hover .icon-news {
  background-image: url("../img/qknav_news_fouc.png");
}
.side-nav li.active .icon-phone,
.side-nav li:hover .icon-phone {
  background-image: url("../img/qknav_phone_fouc.png");
}
.categories {
  background: #f6f7fa;
}
.categories .panel-group {
  margin-bottom: 0;
}
.categories .panel-group .panel {
  box-shadow: none;
  background: none;
  border: none;
}
.categories .panel-group .panel + .panel {
  margin-top: 0;
}
.categories .panel-heading {
  padding: 0;
  background: #fff;
  border-bottom: solid 1px #EAECF2;
}
.categories .panel-heading li {
  float: left;
  width: 25%;
  border-right: solid 1px #EAECF2;
}
.categories .panel-heading li:first-child {
  border-left: solid 1px #EAECF2;
}
.categories .panel-heading li a {
  position: relative;
  display: block;
  height: 85px;
  font-size: 16px;
  font-weight: bold;
  color: #0152A5;
  padding: 20px;
  text-decoration: none;
  background: #fff;
}
.categories .panel-heading li a:focus {
  background-color: #f6f7fa;
}
.categories .panel-heading li a span {
  position: absolute;
  top: 25px;
  right: 10px;
  width: 12px;
  height: 12px;
  border-style: none solid solid none;
  border-width: 2px;
  border-color: #0152A5;
  transform: rotate(45deg);
  transition: margin-top 0.3s ease;
}
.categories .panel-heading li a:hover span {
  margin-top: 5px;
}
.categories .panel-heading i[class^="icon-category"] {
  display: inline-block;
  width: 20px;
  height: 20px;
  vertical-align: middle;
  margin-top: -2px;
  background-size: contain;
  background-repeat: no-repeat;
  background-position: center;
}
.categories .panel-heading .icon-category-1 {
  background-image: url("../img/icon_syzb.png");
}
.categories .panel-heading .icon-category-2 {
  background-image: url("../img/icon_beng.png");
}
.categories .panel-heading .icon-category-3 {
  background-image: url("../img/icon_hb.png");
}
.categories .panel-heading .icon-category-4 {
  background-image: url("../img/icon_gygh.png");
}
.categories .panel-collapse .wrap {
  padding: 40px 0;
}
.categories .panel-collapse p {
  float: left;
  width: 320px;
  font-size: 16px;
  font-weight: bold;
  padding-top: 40px;
  margin-right: 40px;
}
.categories .panel-collapse ul {
  float: left;
  width: 540px;
  padding-top: 35px;
}
.categories .panel-collapse ul li {
  float: left;
  width: 150px;
  height:80px;
  padding: 5px 0;
}
.categories .panel-collapse img {
  float: right;
}
.categories .panel-collapse a {
  color: #333537;
}

.categories .panel-collapse a {
    display: block;
    width: 140px;
    float: right;
    margin-top: -15px;
    padding-left: 10px;
}

  .categories .panel-collapse span::before {
    display: block;
    content: "";
    border-style: none solid solid none;
    border-width: 2px;
    border-color: #0152A5;
    width: 7px;
    height: 7px;
    transform: rotate(-45deg);
    margin-right: 7px;
    vertical-align: middle;
}

.about,
.news,
.petroleum-equipment {
  padding: 80px 0;
}
.about .title,
.news .title,
.petroleum-equipment .title {
  float: left;
  width: 400px;
  border-right: solid 2px #eaecf2;
}
.about .title h2,
.news .title h2,
.petroleum-equipment .title h2 {
  font-size: 24px;
  font-weight: bold;
  color: #0152A5;
  margin: 0 0 20px;
}
.about .title a,
.news .title a,
.petroleum-equipment .title a {
  color: #858688;
}
.about .title a::after,
.news .title a::after,
.petroleum-equipment .title a::after {
  display: inline-block;
  content: "";
  width: 10px;
  height: 10px;
  margin-left: 5px;
  border-style: none solid solid none;
  border-width: 2px;
  border-color: #858688;
  transform: rotate(-45deg);
}
.about .title + p,
.news .title + p,
.petroleum-equipment .title + p {
  line-height: 24px;
  padding-left: 40px;
  margin-left: 400px;
}
.about {
  padding: 65px 0;
}
.about .datas {
  padding: 65px 0;
  margin-top: 80px;
  background: #F6F7FA;
}
.about .datas li {
  float: left;
  width: 25%;
  text-align: center;
}
.about .datas h3 {
  font-size: 32px;
  font-weight: bold;
}
.about .datas i {
  display: block;
  width: 70px;
  height: 70px;
  margin: 0 auto;
}
.about .datas .icon-data-1 {
  background: url("../img/about_chengli.png");
}
.about .datas .icon-data-2 {
  background: url("../img/about_zhuanli.png");
}
.about .datas .icon-data-3 {
  background: url("../img/about_changfang.png");
}
.about .datas .icon-data-4 {
  background: url("../img/about_channeng.png");
}
.petroleum-equipment {
  padding-top: 15px;
}
.petroleum-equipment .title + p {
  font-weight: bold;
}
.petroleum-equipment .cells {
  margin-top: 30px;
}
.petroleum-equipment .cell {
  position: relative;
  float: right;
  border-radius: 5px;
  color: #fff;
  overflow: hidden;
}
.petroleum-equipment .cell img {
  transition: transform 0.3s ease-in-out;
}
.petroleum-equipment .cell:hover img {
  transform: scale(1.1);
}
.petroleum-equipment .cell .mask {
  position: absolute;
  top: 0;
  right: 0;
  bottom: 0;
  left: 0;
  background: linear-gradient(180deg, rgba(0, 0, 0, 0) 0%, rgba(0, 0, 0, 0.4) 83%);
}
.petroleum-equipment .cell span {
  position: absolute;
  top: 0;
  left: 30px;
  font-size: 16px;
  font-weight: normal;
  padding: 5px 10px;
  background: #0152A5;
  border-radius: 0 0 5px 5px;
}
.petroleum-equipment .cell p {
  position: absolute;
  bottom: 20px;
  line-height: 24px;
  padding: 0 30px;
  margin-bottom: 0;
}
.petroleum-equipment .cell-1 {
  float: left;
}
.petroleum-equipment .cell-3,
.petroleum-equipment .cell-4 {
  margin-top: 20px;
}
.marketing {
  position: relative;
  height: 392px;
  background: url("../img/marketing-map.jpg") no-repeat right 0;
}
.marketing::after {
  position: absolute;
  left: 0;
  bottom: 0;
  content: "";
  width: 20px;
  height: 4px;
  background: #0152A5;
}
.marketing h2 {
  font-size: 24px;
  font-weight: bold;
  color: #0152A5;
  margin: 0 auto 20px;
}
.marketing p {
  font-weight: bold;
  font-size: 16px;
  line-height: 1.5;
  margin-bottom: 15px;
}
.marketing p em {
  font-style: normal;
  color: #0152A5;
}
.marketing a {
  color: #858688;
}
.marketing a::after {
  display: inline-block;
  content: "";
  width: 10px;
  height: 10px;
  margin-left: 5px;
  border-style: none solid solid none;
  border-width: 2px;
  border-color: #858688;
  transform: rotate(-45deg);
}
.news .follow {
  padding-left: 40px;
  margin-left: 400px;
}
.news span {
  position: relative;
  float: left;
  margin-right: 10px;
}
.news span:hover .qrcode {
  display: block;
}
.news i {
  display: inline-block;
  width: 27px;
  height: 27px;
}
.news .icon-fb {
  background: url("../img/sns_fb_27.png");
}
.news .icon-wx {
  background: url("../img/sns_wx_27.png");
}
.news .icon-ins {
  background: url("../img/sns_ins_27.png");
}
.news .icon-al {
  background: url("../img/sns_al_27.png");
}
.news .qrcode {
  position: absolute;
  bottom: 100%;
  left: 50%;
  display: none;
  width: 140px;
  height: 150px;
  margin-left: -70px;
  background: url("../img/qrcode-bg.png");
}
.news .qrcode img {
  display: block;
  margin: 12px auto;
}
.news .cells {
  margin-top: 30px;
}
.news .cell {
  position: relative;
  float: left;
  overflow: hidden;
  margin: 0 0 20px 20px;
  border-radius: 4px;
}
.news .cell .mask {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background-image: linear-gradient(-180deg, rgba(0, 0, 0, 0) 0%, rgba(0, 0, 0, 0.4) 83%);
  transition: all 0.3s ease;
}
.news .cell .summary {
  position: absolute;
  bottom: 20px;
  color: #fff;
  padding: 20px;
  overflow: hidden;
}
.news .cell h3 {
  font-size: 24px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  margin-top: 30px;
}
.news .cell p {
  display: -webkit-box;
  -webkit-line-clamp: 2;
  overflow: hidden;
  margin: 0;
  height: 0;
  transition: all 0.2s ease;
}
.news .cell:hover .mask {
  background-color: rgba(1, 82, 165, 0.5);
}
.news .cell:hover p {
  height: 40px;
}
.news .cell-1,
.news .cell-3 {
  margin-left: 0;
}
.news .cell-1,
.news .cell-2 {
  width: 550px;
  height: 470px;
}
.news .cell-3,
.news .cell-4,
.news .cell-5 {
  height: 195px;
}
.news .cell-3 h3,
.news .cell-4 h3,
.news .cell-5 h3 {
  font-size: 16px;
}
.news .cell-3 .summary,
.news .cell-4 .summary,
.news .cell-5 .summary {
  bottom: 0;
}
.modal video {
  display: block;
  width: 100%;
}