body {
  overflow: scroll;
}

.screen {
  position: absolute;
  width: 550px;
  top: 100px;
  right: 100px;
  z-index: 10;
}

@media screen and (max-width:1500px) {
  .screen {
    width: 500px;
    top: 100px;
    right: 100px;
    z-index: 10;
  }

  .first-view .content {
    width: 46%;
  }
}

@media screen and (max-width:1300px) {
  .screen {
    width: 30rem;
    top: 6rem;
    right: 2rem;
    z-index: 10;
  }
}

@media screen and (max-width:1040px) {
  .screen {
    width: 300px;
    top: 100px;
    right: 100px;
    z-index: 10;
  }
}

@media screen and (max-width:1000px) {
  .screen {
    width: 300px;
    top: 80px;
    right: 60px;
    z-index: 10;
  }
}

@media screen and (max-width:880px) {
  .screen {
    width: 200px;
    top: 80px;
    right: 60px;
    z-index: 10;
  }
}

@media screen and (max-width:460px) {

  .first-view .content {
    width: 100%;
  }

  .screen {
    display: none;
  }

  .part-2 .content {
    flex-direction: column;
  }


  .part-2 .content .center {
    top: -60PX;
    transform: rotate(90deg);
  }



  .part-1 {
    height: 798px !important;
    flex-direction: column;
  }

  .part-1 .right {
    width: auto !important;
    margin-top: 360px;
  }

  .part-1 .right span {
    text-align: center;
    font-size: 30px;
  }

  .part-1 .left .pack {
    top: 164px;
  }

  .mall-case {
    margin-top: 140px !important;
  }

  .contactUs {
    margin-top: 0 !important;
  }

  .b140 {
    /* margin-top: 3rem !important; */
  }
}

.part-1 {
  width: 100%;
  height: 400px;
  /* background-color: antiquewhite; */
  margin: auto;
  display: flex;
  justify-content: space-between;
}

.part-1 .left {

  transition: 3s;
  width: 340px;
  height: 100%;
  /* background-color: aqua; */
  /* margin: 0 auto; */
  position: relative;
  transform-style: preserve-3d;
  perspective: 800px;
}

/* 树莓派 */
.part-1 .left .rasp {
  width: 230px;
  height: auto;
  margin: 0 auto;

  position: absolute;
  left: 0;
  top: 70px;
  right: 0;
}


.part-1 .left .pcb {
  width: 280px;
  height: auto;
  position: absolute;
  left: 0;
  top: 180px;
  right: 0;
  margin: auto;

}


.part-1 .left .pack {
  width: 300px;
  height: auto;
  margin: 0 auto;
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  border-radius: 0 0 8px 8px;
  box-shadow: 0px 6px 16px 0px rgba(0, 0, 0, 0.2);
}

.part-1 .left .pack_back {
  width: 300px;
  height: auto;
  margin: 0 auto;
  position: absolute;
  left: 0;
  right: 0;
  top: 170px;
  opacity: 0;
  transform: rotateX(90deg);
}


.part-1 .right {
  width: 580px;
  color: #D32A56;
  display: flex;
  flex-direction: column;
  /* justify-content: space-evenly; */
}

.part-1 .right span {
  font-size: 36px;
  font-weight: bold;
  line-height: 60px;
  /* letter-spacing: 6px; */
  margin-top: 40px;
}

.part-1 .right .desc {
  display: block;
  width: 100%;
  padding: 10px;
  height: auto;
  font-size: 14px;
  border-radius: 16px;
  background: linear-gradient(0deg, #F7F7F7, #F7F7F7), #D32A56;
  backdrop-filter: blur(10px);
  box-shadow: 0px 4px 10px 0px rgba(0, 0, 0, 0.2);
}

.part-2 {
  width: 100%;
  text-align: center;
}

.part-2 .content {
  width: 100%;
  display: flex;
  align-items: center;
  margin-bottom: 30px;
}

.part-2 .content .left {
  width: 340px;
  height: auto;
  position: relative;
}

.part-2 .content .left .pcb2 {
  width: 300px;
  height: auto;
  position: absolute;
  margin: auto;
  left: 0;
  right: 0;
  top: 0;
  bottom: 0;
}

.part-2 .content .center {
  width: 300px;
  height: auto;
  position: relative;
}

.part-2 .content .center img {
  width: 260px;
  height: auto;
}

.part-2 .content .center .itemList {
  width: 80px;
  height: 230px;
  position: absolute;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  top: -4px;
  bottom: 0;
  /* left: 0; */
  right: 50px;
  margin: auto 0;

}

.part-2 .content .center .itemList:hover .item {

  scale: 1.1;
}

.part-2 .content .center .itemList .item::after {
  content: '';
  display: block;
  width: 12px;
  height: 12px;
  border-radius: 50%;
  position: absolute;
  border: 3px solid rgba(247, 181, 0, 1);
  top: 11px;
  right: -36px;
  background-color: #ffbf0f3d;
  backdrop-filter: blur(12px)
}

.part-2 .content .center .itemList .item {
  transition: 1s;
  position: relative;
  width: 100%;
  line-height: 40px;
  font-size: 18px;
  font-weight: bold;
  text-align: center;
  border-radius: 100px;
  background: #FFF2D1;
  box-sizing: border-box;
  border: 1px solid #F7B400;
  box-shadow: 0px 4px 10px 0px #FFEBB7;
}

.part-2 .content .right {
  width: 360px;
  height: 300px;
  background: #d8d8d829;
  border-radius: 24px;
  overflow: scroll;
  box-shadow: inset 0 0 20px rgba(0, 0, 0, 0.1);
}

.part-2 .content .right::-webkit-scrollbar {
  display: none;
}

.part-2 .content .right .assembly {
  width: 100%;
  height: 130px;
  padding: 10px;
  display: flex;
  align-items: center;
  border-bottom: 1px solid #d8d8d849;
}

.part-2 .content .right .assembly img {
  width: 120px;
  height: auto;
  /* height: 110px; */
  margin-right: 10px;
}

.part-2 .content .right .assembly .msg {
  text-align: left;
}

.part-2 .content .right .assembly .msg .title {
  padding: 4px 10px;
  font-size: 18px;
  color: #2179E7;
  gap: 10px;
  border-radius: 100px;
  background: linear-gradient(90deg, #E5E5E5 0%, rgba(231, 231, 231, 0) 100%);
}

.part-2 .content .right .assembly .msg .desc {
  padding: 4px 10px;
  font-size: 12px;
  color: #9E97BF;
  gap: 10px;
  border-radius: 100px;
}

.part-2 .illustrate {
  font-size: 16px;
  /* line-height: 20px; */
  color: #B5B5B5;
}

@keyframes text {

  /* from表示动画开始位置 也可以使⽤0%*/
  from {
    scale: 1;
    opacity: 1;
  }

  /* to动画的结束位置 也可以使⽤100%*/
  to {
    scale: .9;
    opacity: .5;
  }
}

.part-2 .content .left .pcbbg {
  animation: text 1s infinite alternate;
}

@keyframes text {

  from {
    scale: 1;
  }

  to {
    scale: .98;
  }
}

.part-1 .left {
  animation: text 1s infinite alternate;
}


.part-1 .left:hover {
  animation: step-end;
}

.part-1 .left:hover .rasp {
  transition: 1s;
  scale: 1.2;
  transform: rotateX(-20deg);
}

.part-1 .left:hover .pcb {
  transition: 1s;
  scale: 1.1;
  transform: rotateX(-20deg);
  z-index: 80;
  top: 100px;

}

.part-1 .left:hover .pack {
  transition: 1s;
  /* border-radius: 8px 8px 0 0; */
  transform-origin: bottom;
  transform: rotateX(-20deg);
  z-index: 90;
}


.part-1 .left:hover .pack_back {
  opacity: 1;
}

.part-1 .left:hover .pack_back {
  transition-timing-function: linear;
  transition: 1s;
  transform: translateZ(-80deg);
  z-index: -1;
  transform: rotateX(-10deg);
  scale: 1.1;

  top: 178px;
}