.clearfix {
  zoom: 1;
}
.clearfix:after {
  content: '';
  display: block;
  height: 0;
  clear: both;
}
.absolute {
  position: absolute;
}
.tc {
  text-align: center;
}
.bor {
  border-radius: 50%;
}
.banner {
  height: 664px;
}
.banner img {
  height: 100%;
  width: 100%;
  vertical-align: top;
}
.banner .vtc {
  width: 408px;
  height: 141px;
  background-image: url(../img/k.png);
  background-size: contain;
  overflow: hidden;
  color: white;
  text-align: center;
}
.banner .vtc h4 {
  padding-top: 29px;
  font-size: 40px;
  padding-bottom: 15px;
}
.banner .vtc p {
  font-size: 28px;
}
.icon-list {
  background: white;
  padding: 50px 0 0 0;
}
.icon-list .warp {
  border-bottom: 1px solid #e8e8e8;
  padding-bottom: 36px;
  zoom: 1;
}
.icon-list .warp:after {
  content: '';
  display: block;
  height: 0;
  clear: both;
}
.icon-list .item {
  float: left;
  border-right: 1px solid #e8e8e8;
  zoom: 1;
}
.icon-list .item img {
  float: left;
  width: 53px;
  height: 53px;
}
 
.icon-list .item .item-right {
  padding-left: 15px;
  float: left;
  height: 53px;
}
 
.icon-list .item:after {
  content: '';
  display: block;
  height: 0;
  clear: both;
}
.introduce {
  background: white;
  overflow: hidden;
  color: black;
  text-align: center;
}
.introduce h3 {
  padding: 75px 0 15px 0;
  font-size: 32px;
  font-weight: 800;
}
.introduce h4 {
  font-size: 22px;
  color: #616161;
  padding-bottom: 48px;
}
.introduce .pic {
  height: 460px;
  position: relative;
}
.introduce .pic img {
  position: absolute;
  left: 50%;
  margin-left: -425px;
  display: none;
}
.l-tip {
  color: black;
  position: absolute;
}
.l-tip h4 {
  font-size: 36px;
  font-weight: 600;
  margin-top:-3px;
}
.l-tip h5 {
  padding-top: 5px;
  font-size: 24px;
  color: #616161;
}
.l-tip .line {
  width: 4px;
  height: 56px;
  top: 2px;
  left: -27px;
  background: black;
  position: absolute;
}
.introduce-2 {
  background: #f6f6f6;
  padding-bottom: 80px;
  overflow: hidden;
}
.introduce-2 .warp {
  zoom: 1;
}
.introduce-2 .warp:after {
  content: '';
  display: block;
  height: 0;
  clear: both;
}
.introduce-2 .left {
  float: left;
  width: 500px;
  position: relative;
}
.introduce-2 .left p {
  font-size: 15px;
  color: #1e1e1e;
  line-height: 30px;
}
.introduce-2 .left p:nth-of-type(1) {
  padding-top: 190px;
}
.introduce-2 .left p:nth-of-type(2) {
  padding-top: 30px;
}
.introduce-2 .left .l-tip {
  top: 110px;
  left: 27px;
}
.introduce-2 .right {
  width: 700px;
  float: right;
  padding-top: 63px;
  height: 347px;
  position: relative;
  text-align: center;
}
.introduce-2 .right img {
  position: absolute;
  top: 63px;
  left: 50%;
  margin-left: -313px;
}
.introduce-3 {
  background: white;
  overflow: hidden;
}
.introduce-3 .warp {
  zoom: 1;
}
.introduce-3 .warp:after {
  content: '';
  display: block;
  height: 0;
  clear: both;
}
.introduce-3 .left {
  float: left;
  padding-top: 86px;
  width: 700px;
  padding-bottom: 85px;
  text-align: center;
}
.introduce-3 .right {
  position: relative;
  float: right;
  width: 450px;
  padding-left: 50px;
}
.introduce-3 .right p {
  font-size: 15px;
  color: #1e1e1e;
  line-height: 30px;
}
.introduce-3 .right p:nth-of-type(1) {
  padding-top: 190px;
}
.introduce-3 .right p:nth-of-type(2) {
  padding-top: 30px;
}
.introduce-3 .right .l-tip {
  top: 110px;
  left: 77px;
}
.introduce-4 {
  background-image: url(../img/build/bg-2.png);
  background-size: cover;
}
.introduce-4 .warp {
  position: relative;
  color: white;
  padding-top: 90px;
  height: 774px;
  text-align: center;
}
.introduce-4 h4 {
  font-size: 32px;
  padding-bottom: 13px;
  font-weight: 800;
}
.introduce-4 p {
  line-height: 28px;
  font-size: 16px;
  padding-bottom: 46px;
}
.introduce-4 .bottom {
  position: relative;
  height: 404px;
}
.introduce-4 .bottom img {
  position: absolute;
}
.introduce-4 .bottom img:nth-of-type(1) {
  top: 167px;
  left: 307px;
  z-index: 99;
}
.introduce-4 .bottom img:nth-of-type(2) {
  top: 0px;
  left: 384px;
  z-index: 1;
}
.introduce-4 .bottom img:nth-of-type(3) {
  top: 144px;
  left: 564px;
  z-index: 99;
}
.introduce-4 .btn {
  position: absolute;
  width: 291px;
  height: 62px;
  line-height: 62px;
  background-image: url(../img/build/k.png);
  background-size: cover;
  color: white;
  left: 50%;
  transform: translateX(-50%);
  bottom: 102px;
}
.introduce-4 .btn img {
  vertical-align: middle;
  transition: all 0.2s;
}
.introduce-4 .btn a {
  color: white;
  font-size: 18px;
}
.introduce-4 .btn:hover img,
.introduce-4 .btn a {
  transform: scale(1.2);
}
.ourcase {
  padding-top: 70px;
  background: #f6f6f6;
  padding-bottom: 82px;
}
.ourcase .warp {
  position: relative;
}
.ourcase .h-tip {
  padding-bottom: 46px;
  height: 84px;
}
.ourcase .case-list {
  padding-bottom: 37px;
  zoom: 1;
}
.ourcase .case-list .item {
  float: left;
  width: 294px;
  height: 314px;
  position: relative;
  overflow: hidden;
  padding-bottom: 34px;
  cursor: pointer;
}
.ourcase .case-list .item > img {
  width: 100%;
  vertical-align: top;
  -webkit-transition: all 0.2s ease-in-out;
  -moz-transition: all 0.2s ease-in-out;
  -o-transition: all 0.2s ease-in-out;
  -ms-transition: all 0.2s ease-in-out;
  transition: all 0.2s ease-in-out;
}
.ourcase .case-list .item p {
  background: #f6f6f6;
  position: relative;
  z-index: 99;
  font-size: 16px;
  padding-top: 14px;
  line-height: 38px;
}
.ourcase .case-list .item span {
  color: #878787;
  font-size: 14px;
}
.ourcase .case-list .item .mask {
  transition: all 0.5s;
  transform: rotateZ(270deg);
  transform-origin: left top;
  background: #3a48ba;
  opacity: 0.9;
  position: absolute;
  top: 0;
  left: 0;
  width: 294px;
  height: 248px;
}
.ourcase .case-list .item .mask .vtc {
  width: 132px;
  height: 37px;
  color: white;
  border: 1px solid white;
  text-align: center;
  line-height: 33px;
  font-size: 16px;
}
.ourcase .case-list .item .mask .vtc a {
  color: white;
  cursor: pointer;
  display: inline-block;
  vertical-align: middle;
}
.ourcase .case-list .item .mask .vtc img {
  vertical-align: middle;
}
.ourcase .case-list .item .mask .vtc:after {
  content: '';
  position: absolute;
  right: -1px;
  bottom: -1px;
  width: 20px;
  height: 14px;
  background: #3a48ba;
}
.ourcase .case-list .item:hover img {
  -webkit-transform: scale(1.2);
  -moz-transform: scale(1.2);
  -o-transform: scale(1.2);
  -ms-transform: scale(1.2);
  transform: scale(1.2);
}
.ourcase .case-list .item:nth-of-type(2) {
  margin: 0 8px;
}
.ourcase .case-list .item:nth-of-type(3) {
  margin-right: 8px;
}
.ourcase .case-list .item:nth-of-type(6) {
  margin: 0 8px;
}
.ourcase .case-list .item:nth-of-type(7) {
  margin-right: 8px;
}
.ourcase .case-list:after {
  content: '';
  display: block;
  height: 0;
  clear: both;
}
.ourcase .btn {
  position: absolute;
  width: 291px;
  height: 62px;
  line-height: 62px;
  background-image: url(../img/build/k-2.png);
  background-size: cover;
  left: 50%;
  transform: translateX(-50%);
  bottom: -30px;
  text-align: center;
}
.ourcase .btn img {
  vertical-align: middle;
  transition: all 0.2s;
}
.ourcase .btn a {
  color: #3643bb;
  font-size: 18px;
}
.ourcase .btn:hover img,
.ourcase .btn a {
  transform: scale(1.2);
}
.core {
  padding-top: 95px;
  position: relative;
  padding-bottom: 175px;
}
.core .advantage-main {
  padding-bottom: 58px;
  padding-top: 65px;
  zoom: 1;
}
.core .advantage-main .item {
  float: left;
  box-sizing: border-box;
  width: 240px;
  height: 128px;
  border-right: 1px solid #e1e1e1;
  text-align: center;
  padding-top: 7px;
}
.core .advantage-main .item b {
  font-size: 40px;
  color: #565656;
}
.core .advantage-main .item p {
  padding: 23px 0 12px 0;
  font-size: 20px;
  color: #565656;
}
.core .advantage-main .item span {
  font-size: 14px;
  color: #7f7f7f;
}
.core .advantage-main .item:last-child {
  border: none;
}
.core .advantage-main:after {
  content: '';
  display: block;
  height: 0;
  clear: both;
}
.core .btn {
  position: absolute;
  width: 347px;
  height: 58px;
  line-height: 58px;
  border: 2px solid #3643bb;
  text-align: center;
  font-size: 26px;
  color: #3643bb;
  left: 50%;
  transform: translateX(-50%);
  bottom: 90px;
}
.core .btn a {
  color: #3643bb;
  transition: all 0.2s;
}
.core .btn img {
  transition: all 0.2s;
  vertical-align: middle;
}
.core .btn:after {
  content: '';
  position: absolute;
  right: -3px;
  bottom: -3px;
  width: 20px;
  height: 14px;
  background: white;
}
.core .btn:hover img,
.core .btn a {
  transform: scale(1.2);
}