.concept-in {
  line-height: 1.5em;
}

.bg {
  position: relative;
  width: 100%;
  height: calc(100vh);
  overflow: hidden;
}
.bg .pic {
  width: 100%;
  height: 100%;
  position: absolute;
  top: 0;
  background-size: cover;
  background-position: center;
  -moz-transform: scale(1.1) perspective(500px) translateZ(0px);
  -ms-transform: scale(1.1) perspective(500px) translateZ(0px);
  -webkit-transform: scale(1.1) perspective(500px) translateZ(0px);
  transform: scale(1.1) perspective(500px) translateZ(0px);
  -moz-transition: -moz-transform 0s cubic-bezier(0.25, 0.25, 0.75, 0.75);
  -o-transition: -o-transform 0s cubic-bezier(0.25, 0.25, 0.75, 0.75);
  -webkit-transition: -webkit-transform 0s cubic-bezier(0.25, 0.25, 0.75, 0.75);
  transition: transform 0s cubic-bezier(0.25, 0.25, 0.75, 0.75);
}
.bg .pic.move-img {
  -moz-transform: scale(1.1) perspective(500px) translateZ(-50px);
  -ms-transform: scale(1.1) perspective(500px) translateZ(-50px);
  -webkit-transform: scale(1.1) perspective(500px) translateZ(-50px);
  transform: scale(1.1) perspective(500px) translateZ(-50px);
  -moz-transition-duration: 5s;
  -o-transition-duration: 5s;
  -webkit-transition-duration: 5s;
  transition-duration: 5s;
}

.top-title {
  position: absolute;
  right: 20%;
  bottom: 15%;
  color: #fff;
  z-index: 10;
}
.top-title-big, .top-title-big2 {
  font-size: 40px;
}

.level1 .box1 {
  display: flex;
  align-items: center;
}
.level1 .concept-pic1 {
  width: 60%;
}
.level1 .concept-pic1 img {
  width: 100%;
}
.level1 .concept-pic2 {
  width: 80%;
}
.level1 .concept-pic2 img {
  width: 100%;
}
.level1 .concept {
  width: 100%;
}
.level1 .concept-text {
  font-size: 36px;
  text-align: center;
}
.level1 .concept-text img {
  width: 30px;
  margin: 20px auto;
}

.level2 .middle-bg {
  background: url(../images/index/middle-pic.jpg) no-repeat center center;
  margin-bottom: 100px;
  height: 800px;
}
.level2 .bg-top {
  background-color: rgba(0, 0, 0, 0.8);
  height: 100%;
}
.level2 .box2 {
  display: flex;
  align-items: center;
}
.level2 .concept {
  width: 100%;
}
.level2 .concept-text {
  margin-top: 80px;
}
.level2 .concept-in {
  padding: 30px 50px 50px 50px;
  max-width: 500px;
  color: #bdbdbd;
}
.level2 .more {
  padding-left: 50px;
  padding-bottom: 20px;
  width: fit-content;
  -moz-transform: translateX(0px);
  -ms-transform: translateX(0px);
  -webkit-transform: translateX(0px);
  transform: translateX(0px);
  -moz-transition: -moz-transform 0.3s cubic-bezier(0.165, 0.84, 0.44, 1);
  -o-transition: -o-transform 0.3s cubic-bezier(0.165, 0.84, 0.44, 1);
  -webkit-transition: -webkit-transform 0.3s cubic-bezier(0.165, 0.84, 0.44, 1);
  transition: transform 0.3s cubic-bezier(0.165, 0.84, 0.44, 1);
}
.level2 .more:after {
  content: "";
  display: block;
  background-color: #fff;
  padding-left: 50px;
  padding-top: 1px;
  margin-right: 20px;
  position: relative;
  top: 20px;
  -moz-transform: translateX(0px);
  -ms-transform: translateX(0px);
  -webkit-transform: translateX(0px);
  transform: translateX(0px);
  -moz-transition: -moz-transform 0.3s cubic-bezier(0.165, 0.84, 0.44, 1);
  -o-transition: -o-transform 0.3s cubic-bezier(0.165, 0.84, 0.44, 1);
  -webkit-transition: -webkit-transform 0.3s cubic-bezier(0.165, 0.84, 0.44, 1);
  transition: transform 0.3s cubic-bezier(0.165, 0.84, 0.44, 1);
}
.level2 a:hover .more {
  -moz-transform: translateX(-10px);
  -ms-transform: translateX(-10px);
  -webkit-transform: translateX(-10px);
  transform: translateX(-10px);
}
.level2 a:hover .more:after {
  -moz-transform: translateX(30px);
  -ms-transform: translateX(30px);
  -webkit-transform: translateX(30px);
  transform: translateX(30px);
}
.level2 .concept-pic3 {
  position: relative;
  top: 250px;
  width: 60%;
}
.level2 .concept-pic3 img {
  width: 100%;
}

.level3 {
  padding-top: 150px;
}
.level3 .title {
  display: inline-block;
  float: right;
}
.level3 .title-small {
  display: inline-block;
}
.level3 .title-big {
  display: inline-block;
  margin-top: 0;
}
.level3 .box3 {
  margin: 80px 0;
}
.level3 .box3 li {
  display: inline-block;
  width: 24%;
  margin: 0 2px;
}
.level3 .box3 .picture {
  position: relative;
}
.level3 .box3 .picture img {
  width: 100%;
}
.level3 .box3 .picture .img-mask {
  width: 0%;
  height: 100%;
  position: absolute;
  top: 0;
  background-color: rgba(0, 0, 0, 0.3);
  opacity: 0;
  -moz-transition: all 0.5s cubic-bezier(0.165, 0.84, 0.44, 1);
  -o-transition: all 0.5s cubic-bezier(0.165, 0.84, 0.44, 1);
  -webkit-transition: all 0.5s cubic-bezier(0.165, 0.84, 0.44, 1);
  transition: all 0.5s cubic-bezier(0.165, 0.84, 0.44, 1);
}
.level3 .box3 .work-name {
  margin-top: 20px;
  margin-bottom: 10px;
  -moz-transform: translateX(0px);
  -ms-transform: translateX(0px);
  -webkit-transform: translateX(0px);
  transform: translateX(0px);
}
.level3 .box3 .work-name:before {
  content: "";
  display: inline-block;
  background-color: #aaa;
  padding-left: 0px;
  padding-top: 1px;
  margin-right: 0px;
  position: relative;
  top: -10px;
  opacity: 0;
  -moz-transition: all 0.5s cubic-bezier(0.165, 0.84, 0.44, 1);
  -o-transition: all 0.5s cubic-bezier(0.165, 0.84, 0.44, 1);
  -webkit-transition: all 0.5s cubic-bezier(0.165, 0.84, 0.44, 1);
  transition: all 0.5s cubic-bezier(0.165, 0.84, 0.44, 1);
}
.level3 .box3 .view {
  font-size: 10px;
  letter-spacing: 0.2em;
  -moz-transition: all 0.3s cubic-bezier(0.165, 0.84, 0.44, 1);
  -o-transition: all 0.3s cubic-bezier(0.165, 0.84, 0.44, 1);
  -webkit-transition: all 0.3s cubic-bezier(0.165, 0.84, 0.44, 1);
  transition: all 0.3s cubic-bezier(0.165, 0.84, 0.44, 1);
  color: #bdbdbd;
}
.level3 .box3 a:hover .img-mask {
  width: 100%;
  opacity: 1;
}
.level3 .box3 a:hover .work-name:before {
  padding-left: 25px;
  margin-right: 15px;
  opacity: 1;
}
.level3 .box3 a:hover .view {
  letter-spacing: 0.5em;
  color: #e4e4e4;
}

.move1 {
  opacity: 0;
  -moz-transform: translateY(-80px);
  -ms-transform: translateY(-80px);
  -webkit-transform: translateY(-80px);
  transform: translateY(-80px);
}

.move2 {
  opacity: 0;
  -moz-transform: translateY(80px);
  -ms-transform: translateY(80px);
  -webkit-transform: translateY(80px);
  transform: translateY(80px);
}

.move3 {
  opacity: 0;
  -moz-transform: translateY(80px);
  -ms-transform: translateY(80px);
  -webkit-transform: translateY(80px);
  transform: translateY(80px);
}

.move4 {
  opacity: 0;
  -moz-transform: translateY(80px);
  -ms-transform: translateY(80px);
  -webkit-transform: translateY(80px);
  transform: translateY(80px);
}

.move1, .move2, .move3, .move4 {
  -moz-transition: opacity 1s, -moz-transform 0.8s;
  -o-transition: opacity 1s, -o-transform 0.8s;
  -webkit-transition: opacity 1s, -webkit-transform 0.8s;
  transition: opacity 1s, transform 0.8s;
}
.move1.show, .move2.show, .move3.show, .move4.show {
  opacity: 1;
  -moz-transform: translate(0px, 0px);
  -ms-transform: translate(0px, 0px);
  -webkit-transform: translate(0px, 0px);
  transform: translate(0px, 0px);
}

.move5 {
  opacity: 0;
  -moz-transform: translateY(80px);
  -ms-transform: translateY(80px);
  -webkit-transform: translateY(80px);
  transform: translateY(80px);
}

.move5 {
  -moz-transition: opacity 1.2s, -moz-transform 0.8s;
  -o-transition: opacity 1.2s, -o-transform 0.8s;
  -webkit-transition: opacity 1.2s, -webkit-transform 0.8s;
  transition: opacity 1.2s, transform 0.8s;
}
.move5.show {
  opacity: 1;
  -moz-transform: translate(0px, 0px);
  -ms-transform: translate(0px, 0px);
  -webkit-transform: translate(0px, 0px);
  transform: translate(0px, 0px);
}

.move6 {
  opacity: 0;
  -moz-transform: translateY(100px);
  -ms-transform: translateY(100px);
  -webkit-transform: translateY(100px);
  transform: translateY(100px);
}

.move6 {
  -moz-transition: opacity 1.5s, -moz-transform 1.2s;
  -o-transition: opacity 1.5s, -o-transform 1.2s;
  -webkit-transition: opacity 1.5s, -webkit-transform 1.2s;
  transition: opacity 1.5s, transform 1.2s;
}
.move6.show {
  opacity: 1;
  -moz-transform: translate(0px, 0px);
  -ms-transform: translate(0px, 0px);
  -webkit-transform: translate(0px, 0px);
  transform: translate(0px, 0px);
}

.move7 {
  opacity: 0;
  -moz-transform: translateY(80px);
  -ms-transform: translateY(80px);
  -webkit-transform: translateY(80px);
  transform: translateY(80px);
}

.move7 {
  -moz-transition: opacity 1.2s, -moz-transform 1s;
  -o-transition: opacity 1.2s, -o-transform 1s;
  -webkit-transition: opacity 1.2s, -webkit-transform 1s;
  transition: opacity 1.2s, transform 1s;
}
.move7.show {
  opacity: 1;
  -moz-transform: translate(0px, 0px);
  -ms-transform: translate(0px, 0px);
  -webkit-transform: translate(0px, 0px);
  transform: translate(0px, 0px);
}

@media screen and (max-width: 1400px) {
  .level2 .middle-bg {
    height: 600px;
  }
}
@media screen and (max-width: 1100px) {
  .level2 .concept-pic3 {
    width: 68%;
  }

  .level3 .box3 li {
    width: 23%;
  }
}
@media screen and (max-width: 720px) {
  .level1 .box1 {
    margin: 150px 0;
  }
  .level1 .concept-pic1 {
    display: none;
  }
  .level1 .concept-pic2 {
    width: 100%;
    margin-bottom: 100px;
  }

  .level2 .middle-bg {
    position: relative;
    margin: 0;
    height: 600px;
  }
  .level2 .concept-pic3 {
    display: none;
  }

  .level3 {
    padding-top: 100px;
  }
  .level3 .box3 li {
    width: 48%;
    margin-bottom: 20px;
  }
}
@media screen and (max-width: 460px) {
  .level1 .box1 {
    margin: 100px 0;
  }
  .level1 .concept-pic1 {
    display: none;
  }
  .level1 .concept-pic2 {
    width: 100%;
    margin-bottom: 80px;
  }

  .level2 .concept-in {
    padding: 30px 0px 50px 50px;
  }

  .level3 .box3 li {
    width: 100%;
    margin-bottom: 50px;
  }
  .level3 .title {
    float: unset;
    margin-top: 30px;
    display: block;
  }
}