/* 视频 */
.wonder_banner {
  width: 100%;
  overflow: hidden;
  position: relative;
}
.wonder_banner video {
  width: 100%;
  position: absolute;
  top: 0;
  left: 50%;
  transform: translateX(-50%);
  /* display: none; */
}
.wonder_banner .bgimg{
  min-width: 100%;
  min-height: 100%;
  position: absolute;
  top: 50%;
  transform: translate(-50%,-50%);
  left: 50%;
  z-index: 1;
}

.pretext {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 50%;
  z-index: 2;
}

/* idea */
.idea {
  padding: 0 20px;
}
.title {
  margin-top: 100px;
  text-align: center;
  font-size: 30px;
  font-weight: 600;
  color: #666;
  line-height: 36px;
  letter-spacing: 3px;
}
.tip {
  margin-top: 10px;
  text-align: center;
}
.tip p {
  display: inline-block;
  position: relative;
  color: #5f6464;
  opacity: 0.3;
}
.tip p::after,
.tip p::before {
  position: absolute;
  top: 50%;
  content: "";
  width: 46px;
  background: #5f6464;
  height: 1px;
}
.tip p::after {
  right: -60px;
}
.tip p::before {
  left: -60px;
}
.idea .txt {
  height: 48px;
  line-height: 48px;
  text-align: center;
  margin-top: 70px;
  color: #223579;
  letter-spacing: 1px;
}
.idea .txt .box p {
  font-weight: 600;
  font-size: 20px;
  letter-spacing: 5px;
}
.idea .txt span {
  font-size: 28px;
  margin: 0 5px;
}
.idea .txt .box {
  display: inline-block;
  position: relative;
}
.idea .txt .box i {
  position: absolute;
}
.idea .txt .box i:first-child {
  left: -60px;
  top: -10px;
}
.idea .txt .box i:nth-child(3) {
  right: -60px;
  bottom: -10px;
}
.idea .txt .box i img {
  width: 16px;
}
.idea .txt .box .imgbox {
  height: 100%;
  width: 100%;
  position: absolute;
  top: 0;
  left: 0;
  overflow: hidden;
}
.idea .txt .box .imgbox img {
  position: absolute;
  top: 0;
  height: 150%;
  left: -20%;
  animation: movex 6s ease-in-out infinite;
}
@keyframes movex {
  to {
    left: 100%;
  }
}
.concept {
  text-align: center;
  margin: 95px 0 125px;
  /* overflow: hidden; */
}
.concept ul {
  display: flex;
  justify-content: space-between;
}
.concept ul li {
  /* border: 1px solid; */
  width: 24%;
  transition: 0.2s ease-in-out;
  /* cursor: pointer; */
  max-width: 270px;
  position: relative;
  background: #223579;
  overflow: hidden;
}
.concept ul li:hover{
  transform: translateY(-10px)!important;
  box-shadow: 0 0 15px 0px rgba(34, 53, 121, 0.8);
}
.concept ul li .box {
  /* width: 230px; */
  height: 262px;
  margin: 20px;
  overflow: hidden;
  border: 1px solid #fff;
}
.concept ul li .mybg{
  position: absolute;
  top: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 270px;
  height: 304px;
  overflow: hidden;
  display: none;
}
.concept ul li .mybg::before {
  transform: translate(0,0) skewX(-41.5deg);
  position: absolute;
  top: 0;
  left: -200%;
  width: 270px;
  height: 100%;
  content: "";
  transition: 0.5s ease;
  /* opacity: 0; */
  z-index: 1;
  background: rgba(255,255,255,0.3);
}
.concept ul li .mybg::after {
  transform: translate(0,0) skewX(-41.5deg);
  position: absolute;
  top: 0;
  right: -200%;
  width: 270px;
  height: 100%;
  content: "";
  transition: 0.5s ease;
  z-index: 1;
  background: rgba(255,255,255,0.3);
  /* opacity: 0; */
}
.concept ul li .icon {
  height: 80px;
  width: 80px;
  margin: 45px auto 30px;
  background-repeat: no-repeat;
  background-size: 80px 80px;
}
/* .concept ul li:first-child .icon {
  background-image: url("https://futureteacher.oss-cn-shanghai.aliyuncs.com/futureschool/img/tp1.png");
}
.concept ul li:nth-child(2) .icon {
  background-image: url("https://futureteacher.oss-cn-shanghai.aliyuncs.com/futureschool/img/tp2.png");
}
.concept ul li:nth-child(3) .icon {
  background-image: url("https://futureteacher.oss-cn-shanghai.aliyuncs.com/futureschool/img/tp3.png");
}
.concept ul li:last-child .icon {
  background-image: url("https://futureteacher.oss-cn-shanghai.aliyuncs.com/futureschool/img/tp4.png");
} */
.concept ul li:hover .mybg::before{
  left: -50%;
}
.concept ul li:hover .mybg::after{
  right: -50%;
}
.concept ul li p {
  color: #fff;
  line-height: 22px;
}
.concept ul li:first-child .icon {
  background-image: url("https://futureteacher.oss-cn-shanghai.aliyuncs.com/futureschool/img/tp1_on.png");
}
.concept ul li:nth-child(2) .icon {
  background-image: url("https://futureteacher.oss-cn-shanghai.aliyuncs.com/futureschool/img/tp2_on.png");
}
.concept ul li:nth-child(3) .icon {
  background-image: url("https://futureteacher.oss-cn-shanghai.aliyuncs.com/futureschool/img/tp3_on.png");
}
.concept ul li:nth-child(4) .icon {
  background-image: url("https://futureteacher.oss-cn-shanghai.aliyuncs.com/futureschool/img/tp4_on.png");
}
/* scroll_box */
.scroll_box {
  background: #002a58;
  position: relative;
}
.scroll_box .item {
  position: relative;
  z-index: 999;
  color: #fff;
}
.scroll_box .bg {
  position: sticky;
  top: 0;
  overflow: hidden;
}
.scroll_box .bg img {
  position: absolute;
  top: 50%;
  left: 50%;
  min-width: 100%;
  min-height: 100%;
  transform: translate(-50%, -50%);
}
.scroll_box .item .info h5 {
  font-size: 32px;
  font-weight: 600;
  margin-bottom: 24px;
}
.scroll_box .item .info h5 span {
  font-weight: 400;
  font-size: 24px;
}
.scroll_box .item .box {
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 40px;
  display: flex;
  position: relative;
}
.scroll_box .item .info {
  width: 510px;
}
.scroll_box .item .info p {
  font-size: 24px;
  margin-bottom: 40px;
}
.scroll_box .item .info span {
  font-size: 16px;
  line-height: 36px;
}
.video_box {
  flex: 1;
  margin-left: 80px;
  position: relative;
}
.video_box > img {
  position: absolute;
  top: 50%;
  left: 50%;
  max-width: 100%;
  max-height: 100%;
  transform: translate(-50%, -50%);
}
.video_box a {
  position: absolute;
  top: 50%;
  transform: translate(-50%, -50%);
  left: 50%;
  width: 14%;
  opacity: 1;
  transition: 0.3s ease-in-out;
}
.video_box a img {
  width: 100%;
}
/* .video_box:hover a {
  opacity: 1;
} */
.scroll_box .item .box .btn {
  position: absolute;
  bottom: -80px;
  height: 46px;
  width: 166px;
  background: #fff;
  color: #223579;
  font-size: 16px;
  line-height: 46px;
  text-align: center;
}
.scroll_box .item .box .btn img {
  width: 14px;
  position: absolute;
  top: 50%;
  left: 135px;
  opacity: 0;
  transform: translate(-50%, -50%);
  transition: 0.4s ease-in-out;
}
.scroll_box .item .box span {
  transition: 0.4s ease-in-out;
}
.scroll_box .item .box .btn:hover span {
  margin-right: 60px;
}
.scroll_box .item .box .btn:hover img {
  opacity: 1;
  transform: translate(0, -50%);
}
.scroll_box .pagenation {
  position: sticky;
  left: 0px;
  top: 50%;
  transform: translateY(-50%);
}
.pagenation_box {
  position: absolute;
  top: 0;
  right: 0px;
  height: 100%;
  z-index: 999;
  width: 60px;
}
.scroll_box .pagenation ul li {
  height: 12px;
  width: 12px;
  border-radius: 50%;
  border: 1px solid #fff;
  margin-bottom: 17px;
  cursor: pointer;
}
.scroll_box .pagenation ul .active {
  background: #fff;
}

/*  */
.expert {
  margin: 20px auto;
  background: url("https://futureteacher.oss-cn-shanghai.aliyuncs.com/futureschool/img/ebg.png") center no-repeat;
  background-size: contain;
  display: flex;
  flex-flow: column;
  align-items: center;
}
.expert .swiper-container {
  margin: 115px 0 175px;
}
.expert .swiper-slide {
  width: 322px;
  height: 346px;
  transform: scale(0.45) translateY(60%);
  transition: 0.2s ease;
  text-align: center;
}
.expert .swiper-slide img {
  width: 193px;
}
.expert .swiper-slide-active img, .expert .swiper-slide-duplicate-active img{
  box-shadow: 0px 17px 27px 0px rgba(34, 53, 121, 0.34);
}
.expert .swiper-slide p,
.expert .swiper-slide span {
  display: none;
}
.txtshow {
  position: absolute;
  top: 230px;
  left: 50%;
  transform: translateX(-50%);
  width: 322px;
  text-align: center;
  z-index: 9;
}
.txtshow p {
  font-size: 20px;
  color: #5f6464;
  font-weight: 600;
  margin-bottom: 10px;
}
.txtshow span {
  color: #5f6464;
  font-size: 14px;
  line-height: 30px;
  display: block;
  opacity: 0;
}
.expert .swiper-slide-active,.expert .swiper-slide-duplicate-active {
  transform: scale(1);
}
.expert .swiper-slide-next,.expert .swiper-slide-duplicate-next {
  transform: scale(0.6) translate(35%, 10%);
}
.expert .swiper-slide-prev,.expert .swiper-slide-duplicate-prev {
  transform: scale(0.6) translate(-35%, 10%);
}
.swiper-button-next {
  background: #223579;
}
.swiper-button-next img,.swiper-button-prev img{
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%,-50%);
  margin: 0!important;
  width: 22px!important;
}
.swiper-button-next::before,.swiper-button-prev::before{
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: #223579;
  content: "";
  opacity: 0;
  transform: scale(0.2);
  transition: all 0.2s cubic-bezier(0.02, 0.01, 0.47, 1);
}
.swiper-button-next:hover::before,.swiper-button-prev:hover::before{
  background: #5277fb;
  opacity: 0.25;
  transform: scale(1);
}
.expert .swiper-button-next {
  right: -30px;
}
.swiper-button-prev {
  background: #223579;
}
.expert .swiper-button-prev {
  left: -30px;
}
.expert .swiper-button-next,
.expert .swiper-button-prev {
  width: 58px;
  top: -140px;
  height: 45px;
}
.swiper-button-next:focus,
.swiper-button-prev:focus {
  outline: none;
}
.swiper-button-next::after,
.swiper-button-prev::after {
  display: none;
}
.swiperbox {
  width: 1380px;
}

/* science */
.science {
  padding-bottom: 150px;
  background: url(https://futureteacher.oss-cn-shanghai.aliyuncs.com/futureschool/img/sbg.png) center no-repeat;
  background-size: cover;
}
.mechanism {
  text-align: center;
  margin-top: 88px;
}
.mechanism ul {
  display: flex;
  justify-content: space-between;
}
.mechanism .imgbox {
  padding: 26px 50px;
  background: #fff;
  margin-bottom: 20px;
}
.mechanism .imgbox:hover {
  box-shadow: 0px 8px 10px 0px rgba(0, 0, 0, 0.1);
}
.mechanism .imgbox img {
  width: 86px;
}
.mechanism p {
  color: #5f6464;
  line-height: 26px;
}
/* cooperate */
.cooperate {
  display: flex;
  padding: 78px 0px 150px 20px;
  justify-content: space-between;
}
.cooperate .txtbox {
  max-width: 278px;
  min-width: 200px;
  position: relative;
}
.cooperate .txtbox .num {
  font-size: 30px;
  color: #ccc;
}
.cooperate .txtbox .num strong {
  color: #223579;
}
.cooperate .txtbox .num span {
  font-size: 18px;
}
.cooperate .txtbox .sname {
  font-size: 24px;
  color: #5f6464;
  line-height: 36px;
  letter-spacing: 1px;
  margin: 30px 0 20px;
  font-weight: 600;
}
.cooperate .txtbox p {
  font-weight: 400;
  color: #5f6464;
  line-height: 28px;
  color: #5f6464;
}
.cooperate .txtbox img {
  width: 160px;
  margin-top: 44px;
}
.school_swiperbox {
  flex: 1;
  margin-left: 20px;
  max-width: 800px;
}
.school_swiperbox .swiper-slide {
  width: 90%;
}
.school_swiperbox .swiper-slide img {
  width: 100%;
}
.swiper-btn .swiper-button-next,
.swiper-btn .swiper-button-prev {
  width: 58px;
  bottom: 0;
  height: 45px;
  top: auto;
}
.swiper-btn .swiper-button-next {
  left: 108px;
}
.swiper-btn .swiper-button-next.swiper-button-disabled {
  background: url("https://futureteacher.oss-cn-shanghai.aliyuncs.com/futureschool/img/right_no.png") center no-repeat;
}
.swiper-btn .swiper-button-next.swiper-button-disabled img,.swiper-btn .swiper-button-prev.swiper-button-disabled img{
  display: none;
}
.swiper-btn .swiper-button-prev.swiper-button-disabled {
  background: url("https://futureteacher.oss-cn-shanghai.aliyuncs.com/futureschool/img/left_no.png") center no-repeat;
}
/* about */
.about {
  height: 660px;
  background: #223579 url("https://futureteacher.oss-cn-shanghai.aliyuncs.com/futureschool/img/about.png") center no-repeat;
  background-size: cover;
  overflow: hidden;
}
.about .title {
  color: rgba(255, 255, 255, 0.9);
  margin-top: 160px;
}
.about .tip p {
  color: rgba(255, 255, 255, 0.6);
}
.about .tip p::after,
.about .tip p::before {
  background: rgba(255, 255, 255, 0.6);
}
.about > p {
  max-width: 1010px;
  padding: 0 20px;
  /* color: rgba(255, 255, 255, 0.9);
  line-height: 28px;
  letter-spacing: 2px;
  font-size: 16px; */
  margin: 58px auto 0;
  text-align: center;
}
.about > p img{
  width: 100%;
}
/* 适配 */
@media screen and (max-width: 1440px) {
  .swiperbox {
    width: 112%;
  }
  .scroll_box .item .info {
    width: 40%;
  }
  .video_box {
    margin: 0 40px;
  }
  .concept {
    margin: 95px 20px 125px;
  }
  .cooperate{
    padding: 50px 0 100px 20px;
  }
  .mechanism {
    margin: 88px 20px 0;
  }
  .mechanism .imgbox {
    padding: 26px 45px;
  }
  .foot {
    padding: 0 20px;
  }
}
.phone_wonder_banner,.mtxtbox{
  display: none;
}
@media screen and (max-width: 900px) {
  .mobile .wonder_banner{
    display: none;
  }
  .mobile .phone_wonder_banner {
    display: block;
    width: 100%;
  }
  .phone_wonder_banner img{
    width: 100%;
  }
  .mobile .idea .txt{
    margin-top: 40px;
  }
  .mobile .idea .txt .box p{
    font-size: 2.7rem;
    letter-spacing: 1px;
  }
  .mobile .concept ul li p{
    line-height: 4.6rem;
  }
  .mobile .idea .txt .box span {
    font-size: 4.2rem;
  }
  .mobile .idea .txt .box i:first-child{
    left: -6rem;
    top: -1rem;
  }
  .mobile .idea .txt .box i img{
    width: 12px;
  }
  .mobile .idea .txt .box i:nth-child(3){
    right: -6rem;
    bottom: -1rem;
  }
  .mobile .concept{
    margin: 9rem 2rem 7rem;
  }
  .mobile .concept ul {
    display: block;
  }
  .mobile .concept ul li{
    width: 45%;
    float: left;
    margin-left: 2%;
    margin-right: 2%;
    margin-bottom: 3rem;
    max-width: 45%;
  }
  /* .mobile .concept ul li:nth-child(2n){
    float: left;
  } */
  .mobile .concept ul li:nth-child(2n){
    margin-right: 0;
    float: right;
  }
  .mobile .concept ul li .icon{
    width: 70px;
    height: 70px;
    margin: 50px auto 40px;
    background-size: 100% 100%;
  }
  .mobile .concept ul li .box{
    min-height: 250px;
    height: auto;
    padding-bottom: 40px;
    font-size: 2.7rem;
  }
  .mobile .concept ul li .box p{
    line-height: 30px;
  }
  .mobile .scroll_box .item .info{
    width: 100%;
  }
  .mobile .scroll_box .item .info h5{
    font-size: 7.2rem;
    margin-bottom: 15px;
  }
  .mobile .video_box{
    display: none;
  }
  .mobile .scroll_box .item .info h5 span,.mobile .scroll_box .item .info p{
    font-size: 5rem;
  }
  .mobile .scroll_box .item .info span{
    font-size: 16px;
    line-height: 30px;
  }
  .mobile .scroll_box .item .info p{
    margin-bottom: 5rem;
  }
  .mobile .scroll_box .item .box .btn{
    width: 120px;
    height: 40px;
    line-height: 40px;
  }
  .mobile .scroll_box .item .box .btn{
    bottom: -20rem;
  }
  .mobile .scroll_box .item .box .btn span{
    transition: initial;
    margin-right: 45px;
    font-size: 14px;
  }
  .mobile .scroll_box .item .box .btn:hover span{
    margin-right: 45px;
  }
  .mobile .scroll_box .item .box .btn img{
    left: 90px;
    opacity: 1;
    transform: translate(0, -50%);
    width: 10px;
  }
  .mobile .pagenation_box{
    display: none;
  }
  /* .expert */
  .mobile .expert{
    background: #fff;
    position: relative;
    padding: 0 20px;
  }
  .mobile .expert::after,.mobile .expert::before{
    position: absolute;
    content: '';
    display: block;
    width: 50px;
    height: 60px;
  }
  .mobile .expert::before{
    top: 30px;
    left: 30px;
    background: url('https://futureteacher.oss-cn-shanghai.aliyuncs.com/futureschool/img/el.png') center no-repeat;
    background-size: contain;
  }
  .mobile .expert::after{
    bottom: 30px;
    right: 30px;
    background: url('https://futureteacher.oss-cn-shanghai.aliyuncs.com/futureschool/img/er.png') center no-repeat;
    background-size: contain;
  }
  .mobile .expert .swiper-container{
    margin: 6rem 0 6rem;
    padding-bottom: 7rem;
  }
  .mobile .expert .swiper-button-prev{
    left: -20px;
  }
  .mobile .expert .swiper-button-next{
    right: -20px;
  }
  .mobile .txtshow p{
    font-size: 4.2rem;
  }
  .mobile .txtshow span{
    font-size: 2.7rem;
    line-height: 5rem;
  }
  .mobile .mechanism ul{
    display: block;
    text-align: center;
  }
  .mobile .mechanism ul li {
    width: 26%;
    height: auto;
    min-height: 200px;
    font-size: 2.1rem;
    display: inline-block;
    vertical-align: middle;
    margin: 0 3%;
  }
  .mobile .mechanism ul li:first-child{
    margin: 0 10px 0 40px;
  }
  .mobile .mechanism ul li:nth-child(2){
    margin: 0 40px 0 10px;
  }
  .mobile .mechanism ul li img{
    width: 45px;
    height: 45px;
  }
  .mobile .mechanism ul li p{
    line-height: 1.5;
  }
  .mobile .mechanism .imgbox{
    padding: 20px 0px;
    background: #fff;
  }
  .mobile .science{
    padding-bottom: 5rem;
  }
  .mobile .mechanism{
    margin-top: 6rem;
  }
  .mobile .txtbox{
    display: none;
  }
  .mobile .mtxtbox,.mobile .cooperate{
    display: block;
    padding: 0;
  }
  .mobile .school_swiperbox .swiper-slide{
    width: 100%;
  }
  .mobile .school_swiperbox{
    margin: 0;
    width: 80%;
    margin: 5rem auto 0;
  }
  .mobile .mtxtbox{
    min-width: 80%;
    max-width: 80%;
    width: 80%;
    margin: 8.4rem auto;
  }
  .mobile .cooperate .txtbox .num strong,.mobile .cooperate .txtbox .num{
    font-size: 5.3rem;
  }
  .mobile .cooperate .txtbox .num span,.mobile .foot .link ul li a,.mobile .company a,.mobile .company p{
    font-size: 2.7rem;
  }
  .mobile .cooperate .txtbox .sname{
    margin: 50px 0 24px;
    font-size: 4.3rem;
  }
  .mobile .cooperate .txtbox p{
    font-size: 2.1rem;
    min-height: 120px;
    line-height: 30px;
  }
  .mobile .cooperate .txtbox img{
    margin-bottom: 80px;
  }
  .mobile .swiper-btn{
    position: relative;
    margin: 0 auto;
    width: 100%;
    text-align: center;
  }
  .mobile .swiper-btn .swiper-button-next,.mobile .swiper-btn .swiper-button-prev{
    position: relative;
    left: auto;
    right: auto;
    bottom: auto;
    top: auto;
    display: inline-block;
    margin: 0 5rem;
  }
  
  .mobile .about{
    height: 66rem;
    background: #223579 url(https://futureteacher.oss-cn-shanghai.aliyuncs.com/futureschool/img/mabout.png) center no-repeat;
    background-size: cover;
  }
  .mobile .about .title{
    margin-top: 8rem;
  }
  .mobile .about > p img{
    width: 90%;
  }
}
@media screen and (max-width: 750px) {
  .mobile .concept ul li .box p{
    line-height: 24px;
  }
  .mobile .concept ul li .icon{
    margin: 30px auto 20px;
    width: 50px;
    height: 50px;
  }
  .mobile .concept ul li .box{
    min-height: auto;
    padding-bottom: 30px;
  }
}