.shade{
  width: 100%;
  height: 55px;
}
.banner{
  position: relative;
  padding-right: 0; 
  padding-left: 0; 
  padding-bottom: 0;
  margin-top: 56px;
}
.banner .content-title{
  position: absolute;
  z-index: 5;
  left: 50%;
  margin-top: 30px;
  margin-left: -175px;
  transform: translate3D(0,175px,0);
  /* transform: translateY(140px); */
  /* transition: transform 3.5s cubic-bezier(0.38, 0.32, 0.36, 0.98); */
}
.banner .content-title h3{
  margin-top: 30px;
  font-size: 39px;
  line-height: 60px;
  font-weight: 600;
}
.banner .bannerVideo{
  background: #fff;
  height: 1100px;
  overflow: hidden;
  padding-top: 200px;
}
.banner .bannerVideo video{
  margin: 0 auto;
  display: block;
}

.banner .content-title .banner-pop{
  position: relative;
  top: 5px;
  margin-right: 120px;
}
.banner .content-title p{
 font-family:PingFangSC-Regular,Microsoft YaHei;
  font-size:20px;
  color:rgba(0,0,0,1);
  display: inline-block; 
  margin-left: 30px;
}
.banner .content-title .banner-pop span{
  display: inline-block;
  width:16px;
  height:16px;
  border-radius:100%;
  position: absolute;  
}
.banner .content-title .banner-pop span:last-child{
  margin-right: 10px;
}
.banner .content-title .banner-pop span.pop-1{
  margin-left: -10px;
  z-index: 5;
  background:linear-gradient(90deg,rgba(222,222,220,1),rgba(175,179,179,1));
}
.banner .content-title .banner-pop span.pop-2{
  margin-left: 0;
  z-index: 4;
  background:linear-gradient(90deg,rgba(222,222,220,1),rgba(203,203,203,1));
}
.banner .content-title .banner-pop span.pop-3{
  margin-left: 10px;
  z-index: 3;
  opacity: 0.4;
  background:linear-gradient(90deg,rgba(222,222,220,1),rgba(175,179,179,1));
}

.content  .content-detail{
  width: 800px;
  margin: 0 auto;
  font-family:PingFangSC-Regular,Microsoft YaHei;
  font-size:16px;
  color:rgba(0,0,0,0.40);
  line-height:30px;
  text-align:center;
}
.content  .content-click{
  /* font-family:PingFangSC-Regular; */
  font-size:14px;
  /* color:#14BAFF; */
  color: #50d2f9;
  text-align: center;
  display: block;
  margin: 30px auto;
  font-weight: 300;
  outline: none;
}
.content  .content-click span{
  display: inline-block;
  width: 10px;
  height: 12px;
  margin-right: 5px;
  background: url('../img/arrow.png')no-repeat;

}
.number{
  display: flex;
  justify-content: center;
  padding: 70px 0 90px;
}
.number ul {
  display: flex;
  justify-content: center;
}

.number li {
  display: flex;
  flex-direction: column;
  align-items: center;
}
.number li:nth-child(2),
.number li:nth-child(4){
  margin: 0 30px;
}
.number li span {
  letter-spacing: 0;
  text-align: center;
  font-size: 30px;
  font-weight: 600;
  color: rgba(0, 0, 0, 1);
  position: relative;
}

.number li span sup {
  position: absolute;
  font-size: 16px;
  font-family: Ronaldo;
  font-weight: 400;
  color: rgba(0, 0, 0, 1);
  top: 16px;
  right: -8px;
}


.number li span b {
  font-size: 30px;
  font-weight: 600;
  color: rgba(0, 0, 0, 1);
}

.number ul li p {
  font-weight: 400;
  color: rgba(0, 0, 0, 1);
  font-size: 15px;
}
.bannerBottom{
  width: 100%;
  height: 102px;
  background: url('../img/bottom.png') no-repeat center;
}

.major-challenge {
  font-size: 36px;
  font-weight: 600;
  color: rgba(0, 0, 0, 1);
  text-align: center;
}

.major-challenge-b {
  width: 100%;
  position: relative;
}
.major-challenge-b .major-img{
  padding: 0 17%;
}
.major-challenge-b img{
  width: 100%;
}

.major-challenge-b .major-challenge-b-t {
  position: absolute;
  top: 77px;
  left: 70%;
}

.major-challenge-b .major-challenge-b-t p:nth-child(1) {
  width: 240px;
  font-size: 31px;
  font-weight: 600;
  color: rgba(0, 0, 0, 1);
  padding-bottom: 16px;
  text-align-last: justify;
}

.major-challenge-b .major-challenge-b-t p:nth-child(2) {
  width: 238px;
  font-size: 17px;
  font-weight: 400;
  color: rgba(0, 0, 0, 1);
  text-align-last: justify;
}

.major-label {
  width: 100%;
  padding: 110px 17%;
  display: flex;
  justify-content: space-between;
}

.major-label .major-label-i {
  text-align: center;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  align-items: center;
  height: 96px;
}

.major-label .major-label-i img:nth-child(1) {
  width: 51px;
}

.major-label .major-label-i img:nth-child(2) {
  width: 58px;
}

.major-label .major-label-i img:nth-child(3) {
  width: 46px;
}

.major-label .major-label-i img:nth-child(4) {
  width: 54px;
}

.major-label .major-label-i img:nth-child(5) {
  width: 44px;
}

.major-label .major-label-i img:nth-child(6) {
  width: 48px;
}

.major-label .major-label-i img:nth-child(7) {
  width: 50px;
}

.major-label .major-label-i p {
  font-size: 15px;
  font-weight: 400;
  color: rgba(0, 0, 0, 1);
  padding-top: 5px;
}

.major-b {
  width: 100%;
}

.major-b-t {
  width: 100%;
  height: 284px;
  background: url(../img/majors-new/major-b1.jpg) no-repeat 0 0;
  background-size: cover;
}

.major-b-t p {
  width: 58%;
  text-align: center;
  margin: 0 auto;
}

.major-b-t p:nth-child(1) {
  padding-top: 40px;
  font-size: 36px;
  font-weight: 600;
  color: #fff;
}

.major-b-t p:nth-child(2) {
  font-size: 15px;
  font-weight: 300;
  color: rgba(255, 255, 255, 1);
  line-height: 28px;
  padding-top: 36px;
}

.major-b-t p:nth-child(3) {
  font-size: 15px;
  font-weight: 400;
  color: rgba(255, 255, 255, 1);
  padding-top: 55px;
  text-align: right;
}

.major-b-m {
  width: 100%;
  position: relative;
}
.major-b-m img{
  width: 100%;
}
.major-b-m .major-b-m-c{
  position: absolute;
  color: #fff;
  left: 14%;
  top: 30%;
}
.major-b-m p:nth-child(1) {
  font-size: 31px;
  font-weight: 600;
  color: rgba(255, 255, 255, 1);
  width: 240px;
  margin-left: 22%;
  text-align-last: justify;
}

.major-b-m p:nth-child(2) {
  font-size: 22px;
  font-weight: 500;
  color: rgba(255, 255, 255, 1);
  width: 240px;
  margin-left: 22%;
  text-align-last: justify;
}

.major-b-b {
  width: 100%;
  height: 48vw;
  background: url(../img/majors-new/major-b3.jpg) no-repeat 0 0;
  background-size: cover;
}

.major-b-b p {
  width: 29%;
  text-align: center;
  color: #fff;
  margin: 0 auto;
}

.major-b-b p:nth-child(1) {
  font-size: 19px;
  font-family: PingFangSC-Regular;
  padding-top: 55px;
}

.major-b-b p:nth-child(2) {
  font-size: 30px;
  font-family: PingFangSC-Semibold;
  padding-top: 10px;
}
.major-b-b .major-b-b-c{
  margin-top: 20px;
  display: flex;
  justify-content: center;
}
.major-b-b .major-b-b-c .major-b-b-c-d{
  display: flex;
  flex-direction: column;
  padding: 0 30px;
  text-align: left;
}
.major-b-b .major-b-b-c .major-b-b-c-d span{
  font-size: 14px;
  font-weight: bold;
  color: #fff;
  line-height: 23px;
}
.major-b-b .major-b-b-c .major-b-b-c-d em{
  font-style: normal;
  font-size: 12px;
  color: #fff;
  line-height: 16px;
}

.lw .content-title {
  transition: all 1s cubic-bezier(0.38, 0.32, 0.36, 0.98);
}
.lw .content-title h3 b{
  font-family: DIN-Regular;
  font-size:50px;
  color:#000000;
  /* font-weight: normal; */
}
.lw-wall{
  position: relative;
  overflow: hidden;
}
.lw{
  transition: all 1s cubic-bezier(0.38, 0.32, 0.36, 0.98);
  position: relative;
  top: 0;
  z-index: 20;
  padding-bottom: 0;
  transform: translate3d(0px, 0px, 0px);
}
.lw .img-wall{
  position: relative;
  transition: all 1s ease;
  transform: scale(.5);
  height: 2900px;
  top: -60px;
  transform-origin: 50% 0%;
  /* translate3d(0,-500px,0) */
}
.lw .img-wall .shell-left{
  position: absolute;
  z-index: -1;
  top: 150px;
  left: 50%;
  margin-left: -575px;
  transform: rotate(19deg);
  transform-origin: 100% 100%;
  transition: all 1s cubic-bezier(0.38, 0.32, 0.36, 0.98);
}
.lw .img-wall .shell-right{
  position: absolute;
  z-index: -1;
  top: 140px;
  left: 50%;
  margin-left: 247px;
  transform: rotate(-19deg);
  transform-origin: 0% 100%;
  transition: all 1s cubic-bezier(0.38, 0.32, 0.36, 0.98);
}
.lw .img-wall .shadow{
  position: absolute;
  top: 60px;
  left: 50px;
}
.lw .img-wall .preImg{
  position: absolute;
  width: 100%;
  transition: all 1s cubic-bezier(0.38, 0.32, 0.36, 0.98);
  /* opacity: .5; */
}
.lw .img-wall .preImg.noOne{
  opacity: .5;
}
.lw .img-wall .preImg.active{
  opacity: 1;
}
.lw .img-wall .preImg img{
  /* width: 400px; */
  position: absolute;
  display: block;
  left: 50%;
  margin-left: -300px;
}
.lw .img-wall .preImg img.topImg{
  z-index: 4;
  transition: all .5s ease;
}
.lw .img-wall .preImg.active img.topImg{
  opacity: 0;
}

.lw .img-wall .preImg img.backImg{
  z-index: 3;
  /* opacity: 0; */
}
.lw .img-wall .preImg.active img.backImg{
  opacity: 1;
}
.lw .img-wall .preImg:nth-child(1){
  z-index: 5;
  top: 20px;
}
.lw .img-wall .preImg.active:nth-child(1){
  top: 0;
}
.lw .img-wall .preImg:nth-child(1) img.topImg{
  opacity: 0;
}
.lw .img-wall .preImg.active:nth-child(1) img.topImg{
  opacity: 1;
}

.lw .img-wall .preImg:nth-child(2){
  z-index: 4;
  top: 148px;
}
.lw .img-wall .preImg:nth-child(3){
  z-index: 3;
  top: 338px;
}
.lw .img-wall .preImg:nth-child(4){
  z-index: 2;
  top: 515px;
}
.lw .img-wall .preImg:nth-child(5){
  z-index: 1;
  top: 703px;
}
.lw .img-wall .preImg .lwText{
  position: absolute;
  left: 50%;
  margin-left: -600px;
  top: 110px;
  width: 100px;

  transform: translate3d(-30px,0,0);
  opacity: 0;
  transition: all 1s cubic-bezier(0.38, 0.32, 0.36, 0.98);
}
.lw .img-wall .preImg .lwText span{
  font-family:PingFangSC-Regular,Microsoft YaHei;
  font-size:10px;
  color:rgba(0,0,0,0.40);
  display: block;
  text-align: right;
}
.lw .img-wall .preImg .lwText span:nth-child(1){
  margin-top: 0;
}
.lw .img-wall .preImg .lwText span:nth-child(2){
  margin-top: 40px;
}
.lw .img-wall .preImg .lwText span:nth-child(3){
  margin-top: 60px;
}
.lw .img-wall .preImg .lwText span:nth-child(4){
  margin-top: 80px;
}
.lw .img-wall .preImg .lwClose{
  position: absolute;
  left: 50%;
  margin-left: -485px;
  top: 50px;
  transition: all .5s cubic-bezier(0.38, 0.32, 0.36, 0.98);
  opacity: 0;
}
.lw .img-wall .preImg .lwClose img{
  left: 0;
  margin-left: 0;
  transition: all .5s cubic-bezier(0.38, 0.32, 0.36, 0.98);
  width: 150px;
}
.lw .img-wall .preImg .lwClose img:nth-child(1){
  top: 0;
  z-index: 5;
}
.lw .img-wall .preImg .lwClose img:nth-child(2){
  top: 20px;
  z-index: 4;
}
.lw .img-wall .preImg .lwClose img:nth-child(3){
  top: 20px;
  z-index: 4;
}
.lw .img-wall .preImg .lwClose img:nth-child(4){
  top: 25px;
  z-index: 3;
}
.lw .img-wall .preImg .lwClose img:nth-child(5){
  top: 21px;
  z-index: 4;
}
.lw .img-wall .preImg .lwClose img:nth-child(6){
  top: 21px;
  z-index: 3;
}
.lw .img-wall .preImg .lwClose img:nth-child(7){
  top: 40px;
  z-index: 4;
}
.lw .img-wall .preImg .lwClose img:nth-child(8){
  top: 20px;
  z-index: 1;
}
.lw .img-wall .preImg .imgTitle{
  position: absolute;
  left: 50%;
  top: 110px;
  transition: all 1s cubic-bezier(0.38, 0.32, 0.36, 0.98);
  opacity: 0;
  transform: translate3d(0,30px,0);
  z-index: 5;
}
.lw .img-wall .preImg .imgTitle h3{
  font-family:PingFangSC-Medium,Microsoft YaHei;
  font-size:50px;
  color:#000000;
  margin-bottom: 5px;
  font-weight: bold;
}
.lw .img-wall .preImg .imgTitle p{
  font-family:PingFangSC-Medium,Microsoft YaHei;
  font-weight: bold;
  font-size:20px;
  color:rgba(0,0,0,0.80);
  text-align:center;
}

.lw .img-wall .preImg .imgContent{
  position: absolute;
  width: 200px;
  left: 50%;
  margin-left: 350px;
  top: 100px; 
  
  transition: all 1s cubic-bezier(0.38, 0.32, 0.36, 0.98);
  opacity: 0;
  transform: translate3d(0,30px,0);
}
.lw .img-wall .preImg .imgContent h4{
  font-family:PingFangSC-Medium,Microsoft YaHei;
  font-size:14px;
  color:#000000;
  margin-bottom: 20px;
  line-height: 20px;
}

.lw .img-wall .preImg .imgContent p{
  font-family:PingFangSC-Regular,Microsoft YaHei;
  font-size:13px;
  color:rgba(0,0,0,0.40);
  line-height:18px;
  /* text-align:justify; */
  margin-bottom: 15px;
}
.lw .img-wall .preImg .imgContent img{
  position: initial;
  left: 0;
  margin-left: 0;
  width: 100%;
  margin-bottom: 10px;
}
.lw .img-wall .preImg .imgContent .imgNum{
  /* border:1px solid rgba(0,0,0,0.10); */
  width:97px;
  display: inline-block;
}
.lw .img-wall .preImg .imgContent .imgNum img{
  width: auto;
}

.lw .img-wall .preImg .imgContent .imgNum:first-child{
  margin-right: 4px;
}
/* .lw .img-wall .preImg .imgContent .imgNum span{
  font-family:DIN-Medium;
  font-size:16px;
  letter-spacing:0;
  text-align:left;
}
.lw .img-wall .preImg .imgContent .imgNum p{
  font-family:PingFangSC-Regular;
  font-size:10px;
  color:rgba(0,0,0,0.40);
  margin-bottom: 0;
} */

.lw .img-wall .preImg:nth-child(2) .imgContent{
  top: 50px;
}

.lw .img-wall .preImg:nth-child(3) .imgContent{
  top: 60px;
}
.lw .img-wall .preImg:nth-child(2) .imgTitle{
  margin-left: -30px;
}
.lw .img-wall .preImg:nth-child(3) .imgTitle{
  margin-left: -119px;
}
.lw .img-wall .preImg:nth-child(3) .imgTitle h3{
  color: #fff;
}
.lw .img-wall .preImg:nth-child(3) .imgTitle p{
  color: #fff;
}
.lw .img-wall .preImg:nth-child(4) .imgTitle{
  margin-left: -50px;
}
.lw .img-wall .preImg:nth-child(4) .imgTitle h3{
  color: #fff;
  text-shadow: 0 2px 10px rgba(100,100,100,.8);
}
.lw .img-wall .preImg:nth-child(4) .imgTitle p{
  color: #fff;
  text-shadow: 0 2px 10px rgba(100,100,100,.8);
}
.lw .img-wall .preImg:nth-child(4) .imgContent{
  top: 20px;
}
.lw .img-wall .preImg:nth-child(5) .imgContent{
  top: 200px;
}
.lw .img-wall .preImg:nth-child(5) .content-left{
  top: 60px;
}

.lw .img-wall .preImg .content-left{
  position: absolute;
  left: 50%;
  margin-left: -550px;
}
.lw-btn{
  position: fixed;
  z-index: 100;
  margin-top: -40px;
  top: 50%;
  opacity: 0;
  right: 10px;
}
.lw-btn ul li{
  margin: 5px 7px;
  display: block;
  width: 14px;
  height: 13px;
  position: relative;
}
.lw-btn ul li span{
  height: 4px;
  width: 4px;
  margin: -2px 0 0 -6px;
  border-radius: 50%;
  background: #aaa;
  position: absolute;
  left: 50%;
  top: 50%;
  margin: -2px 0 0 -2px;
  transition: all 0.1s ease-in-out;
}
.lw-btn ul li.active span{
  height: 4px;
  width: 12px;
  margin: -2px 0 0 -6px;
  border-radius: 0%;
  background: #999;
  display: block;
}

.major-out{
  width: 100%;
  height: 48vw;
  background: url(../img/20200827/major-out.png) no-repeat 0 0;
  background-size: 100% 100%;
}
.major-out p{
  text-align: center;
}
.major-out p:nth-child(1){
  padding-top: 72px;
  font-size:21px;
  font-family:PingFang SC;
  font-weight:400;
  color:rgba(0,0,0,1);
  line-height:49px;
}
.major-out p:nth-child(2){
  margin-top: 10px;
  font-size:36px;
  font-family:PingFang SC;
  font-weight:500;
  color:rgba(0,0,0,1);
  line-height:49px;
}

.major-three {
  margin-top: 90px;
  text-align: center;
}

.major-three-b {
  padding: 80px 0 119px 0;
  display: flex;
  justify-content: center;
}

.major-three-b .major-three-b-c {
  position: relative;
}

.major-three-b .major-three-b-c:nth-child(2) {
  margin: 0 60px;
}

.major-three-b .major-three-b-c p {
  text-align: left;
}

.major-three-b .major-three-b-c p:nth-child(1) {
  width: 63px;
  height: 25px;
  background: rgba(51, 57, 59, 1);
  border-radius: 8px;
  font-size: 18px;
  font-weight: normal;
  color: rgba(255, 255, 255, 1);
  display: flex;
  justify-content: center;
  align-items: center;
}

.major-three-b .major-three-b-c .major-number {
  position: absolute;
  font-size: 65px;
  font-family: ITC;
  font-weight: 500;
  font-style: italic;
  color: rgba(3, 5, 6, 1);
  opacity: 0.15;
  top: -22px;
  left: -35px;
}

.major-three-b .major-three-b-c:nth-child(2) .major-number,
.major-three-b .major-three-b-c:nth-child(3) .major-number {
  left: -50px;
}

.major-three-b .major-three-b-c p:nth-child(2) {
  width: 237px;
  font-size: 19px;
  font-weight: 500;
  color: rgba(51, 57, 59, 1);
  line-height: 28px;
  padding: 13px 0 21px 0;
}

.major-three-b .major-three-b-c p:nth-child(2) .major-t1 {
  font-weight: 400;
  position: relative;
  padding-right: 20px;
}

.major-three-b .major-three-b-c p:nth-child(2) .major-t2 {
  font-weight: 400;
  position: absolute;
  font-size: 12px;
  top: -3px;
  right: 8px;
}

.major-three-b .major-three-b-c p:nth-child(3) {
  width: 220px;
  height: 102px;
  font-size: 12px;
  font-weight: normal;
  color: rgba(51, 57, 59, 1);
  line-height: 20px;
}

.major-three-b .major-three-b-c p:nth-child(4) {
  width: 266px;
}

.major-three-b .major-three-b-c p:nth-child(4) img {
  width: 100%;
}

.major-three-b .major-three-b-c:nth-child(2) p:nth-child(3) span {
  font-size: 10px;
}

.major-three .major-three-t1 p:nth-child(1) {
  font-size: 21px;
  font-family: PingFangSC-Regular;
  font-weight: normal;
  color: rgba(0, 0, 0, 1);
}

.major-three .major-three-t1 p:nth-child(2) {
  font-size: 39px;
  font-family: PingFangSC-Medium;
  color: rgba(0, 0, 0, 1);
  padding: 17px 0 35px 0;
}

.major-three .major-three-t1 p:nth-child(3) {
  width: 1000px;
  font-size: 21px;
  font-family: PingFangSC-Regular;
  font-weight: 400;
  color: rgba(0, 0, 0, 1);
  line-height: 40px;
  margin: 0 auto;
}

.major-three-b .major-three-b1-c {
  display: flex;
  flex-direction: column;
  align-items: center;
  width: 200px;
}

.major-three-b .major-three-b1-c p:nth-child(1) {
  height: 24px;
  width: 90px;
  border-radius: 6px;
  font-size: 12px;
  font-weight: normal;
  text-align: center;
  line-height: 24px;
  color: rgba(255, 255, 255, 1);
}

.major-three-b .major-three-b1-c p:nth-child(2) {
  font-size: 12px;
  font-weight: bold;
  color: rgba(101, 101, 101, 1);
  padding: 10px 0 26px 0;
}

.major-three-b .major-three-b1-c p:nth-child(3) {
  width: 100%;
}

.major-three-b .major-three-b1-c p:nth-child(3) img {
  width: 100%;
}

.major-three-b .major-three-b1-c:nth-child(1) p:nth-child(1) {
  background: linear-gradient(90deg, rgba(101, 209, 250, 1), rgba(54, 121, 237, 1));
}

.major-three-b .major-three-b1-c:nth-child(2) p:nth-child(1) {
  background: rgba(170, 161, 103, 1);
}

.major-three-b .major-three-b1-c:nth-child(3) p:nth-child(1) {
  background: rgba(57, 126, 218, 1);
}

.major-three-b .major-three-b1-c:nth-child(4) p:nth-child(1) {
  background: rgba(92, 191, 148, 1);
}

.major-three-b .major-three-b1-c:nth-child(2),
.major-three-b .major-three-b1-c:nth-child(3) {
  margin: 0 25px;
}

.major-three .major-three-t2 p:nth-child(1) {
  font-size: 21px;
  font-family: PingFang SC;
  font-weight: 400;
  color: rgba(28, 19, 18, 1);
}

.major-three .major-three-t2 p:nth-child(2) {
  font-size: 39px;
  font-family: PingFang SC;
  font-weight: 600;
  color: rgba(28, 19, 18, 1);
  padding: 25px 0 13px 0;
}

.major-three .major-three-t2 p:nth-child(3) {
  width: 530px;
  font-size: 21px;
  font-family: PingFang SC;
  font-weight: 400;
  color: rgba(0, 0, 0, 1);
  padding-bottom: 43px;
  margin: 0 auto;
}

.major-three-t2-c {
  width: 100%;
  display: flex;
  justify-content: center;
  padding-bottom: 63px;
  display: none;
}

.major-three-t2-c .major-three-t2-c-1 {
  width: 75px;
  height: 65px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: space-between;
}

.major-three-t2-c .major-three-t2-c-1:nth-child(1) img {
  width: 40px;
  background: #000;
}

.major-three-t2-c .major-three-t2-c-1 .major-three-t2-c-1-2 {
  font-size: 11px;
  font-family: PingFangSC-Medium;
  font-weight: normal;
  color: #000;
}

.major-three-t2-c .major-three-t2-c-1:nth-child(2) img {
  width: 42.5px;
  height: 37px;
  background: #000;
}

.major-three-t2-c .major-three-t2-c-1:nth-child(3) img {
  width: 26.5px;
  height: 41px;
  background: #000;
}

.major-three-t2-c .major-three-t2-c-1:nth-child(4) img {
  width: 37px;
  height: 36.5px;
  background: #000;
}

.major-three-t2-c .major-three-t2-c-1:nth-child(2) {
  margin: 0 80px;
}

.major-three-t2-c .major-three-t2-c-1:nth-child(3) {
  margin-right: 80px;
}

.major-bp {
  width: 100%;
  text-align: center;
  padding-bottom: 78px;
}

.major-bp .major-bp-1 {
  width: 1045px;
}

.major-bp-2 {
  margin: 39px auto 85px;
  width: 1044px;
  height: 555px;
  background: url(../img/20200827/major-bp-2.png) no-repeat 0 0;
  background-size: cover;
}

.major-bp-2-t {
  padding: 43px 0 0 213px;
  text-align: left;
}

.major-bp-2-t p:nth-child(1) {
  font-size: 12px;
  font-family: DIN;
  font-weight: bold;
  color: rgba(255, 255, 255, 1);
}

.major-bp-2-t p:nth-child(2) {
  width: 274px;
  font-size: 20px;
  font-family: DIN;
  font-weight: bold;
  color: rgba(255, 255, 255, 1);
  line-height: 22px;
  padding: 10px 0;
}

.major-bp-2-t p:nth-child(3) {
  width: 529px;
  font-size: 12px;
  font-family: DIN;
  font-weight: bold;
  color: rgba(255, 255, 255, 1);
  line-height: 20px;
  opacity: 0.7;
}

.major-bp-2-b {
  margin: 180px 0 0 213px;
  width: 195px;
  height: 52px;
  padding: 8px 0;
  border: 1px solid rgba(255, 255, 255, 1);
  border-radius: 10px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: space-between
}

.major-bp-2-b p:nth-child(1) {
  font-size: 17px;
  font-weight: 500;
  color: rgba(255, 255, 255, 1);
  line-height: 13px;
}

.major-bp-2-b p:nth-child(2) {
  font-size: 7px;
  font-family: DIN;
  font-weight: bold;
  color: rgba(255, 255, 255, 1);
  transform: scale(0.7);
  width: 130%;
}

.major-bp-t {
  text-align: center;
}

.major-bp-t p:nth-child(1) {
  font-size: 21px;
  font-family: PingFang SC;
  font-weight: 400;
  color: rgba(28, 19, 18, 1);
  padding-bottom: 24px;
}

.major-bp-t p:nth-child(2) {
  font-size: 39px;
  font-family: PingFang SC;
  font-weight: 600;
  color: rgba(28, 19, 18, 1);
}

.major-bp-4 {
  width: 662px;
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  margin: 74px auto 30px;
}

.major-bp-4 .item {
  width: 292px;
  height: 326px;
  text-align: center;
}

.major-bp-4 .item img {
  width: 292px;
  border-radius: 10px;
}

.major-bp-4 .item p {
  text-align: center;
}

.major-bp-4 .item .major-bp-4-p1 {
  font-size: 18px;
  font-family: PingFang SC;
  font-weight: normal;
  color: rgba(46, 46, 46, 1);
  opacity: 0.9;
  padding: 23px 0 5px 0;
}

.major-bp-4 .item .major-bp-4-p2 {
  font-size: 13px;
  font-family: PingFang SC;
  font-weight: 400;
  color: rgba(46, 46, 46, 1);
  opacity: 0.9;
}

.major-bp-b {
  width: 663px;
  height: auto;
  padding: 25px 43px;
  background: rgba(240, 240, 240, 1);
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}

.major-bp-b p {
  text-align: left;
  font-size: 11px;
  font-family: PingFang SC;
  font-weight: 400;
  color: rgba(74, 74, 74, 1);
  line-height: 20px;
  opacity: 0.9;
  margin: 10px 0;
}

.major-bp-b p span:nth-child(1) {
  display: inline-block;
  vertical-align: top;
}

.major-bp-b p span:nth-child(2) {
  display: inline-block;
  width: 555px;
}


/* 智能系统 */
.smart{
  margin-bottom: 80px;
}
.smart .content-title{
  margin-bottom: 0;
}
.smart .content-title h3{
  color: #fff;
}
.smart img{
  width: 100%;
}
.smart  .content-detail{
  color: #fff;
}
/*笔记本高度*/
@media screen and (max-height: 767px) and (min-height: 350px){
  .lw .img-wall {
      transform: scale(.4);
      top: -60px;
  }
}