.ctn1 {
  position: relative;
}
.ctn1 img {
  width: 100%;
  padding:0 15%;
}
.ctn1 video {
  width: 100%;
}
.ctn1 .text {
  position: absolute;
  width: 100%;
  left: 0;
  top: 90px;
}
.ctn1 .text p {
  margin-top: 10px;
}
.ctn2 {
  position: relative;
  overflow: hidden;
  padding: 100px 0 40px;
  background: url(../img/product/bg1.jpg) no-repeat;
  background-size: cover;
}
.ctn2 .ctn-list {
  margin-top: 80px;
  display: flex;
  justify-content: space-between;
}
.ctn2 .ctn-list .tu {
  order: 2;
  width: 63.8%;
  position: relative;
  left: 80px;
}
.ctn2 .ctn-list .tu img {
  width: 100%;
  transition: all 0.5s;
  -webkit-transition: all 0.5s;
  -moz-transition: all 0.5s;
  -ms-transition: all 0.5s;
}
.ctn2 .ctn-list .tu:hover img {
  transform: scale(1.05);
  -webkit-transform: scale(1.05);
  -moz-transform: scale(1.05);
  -ms-transform: scale(1.05);
}
.ctn2 .ctn-list .text {
  width: 36.2%;
  padding-top: 60px;
}
.ctn2 .ctn-list .text .txt p {
  color: #666;
  position: relative;
  padding-left: 20px;
  line-height: 1.8;
}
.ctn2 .ctn-list .text .txt p:before {
  content: '';
  width: 6px;
  height: 6px;
  border-radius: 50%;
  /*background: #3065d5;*/
  background: var(--blue);
  position: absolute;
  left: 0;
  top: 12px;
}
.ctn2 .ctn-list .text .mores {
  margin-top: 40px;
}
.ctn3 {
  overflow: hidden;
  padding: 120px 0;
}
.ctn3 .ctn-top {
  border-bottom: 1px solid rgba(231, 233, 239, 0.5);
}
.ctn3 .ctn-top ul {
  display: flex;
  justify-content: center;
}
.ctn3 .ctn-top ul li {
  cursor: pointer;
  padding-bottom: 20px;
  position: relative;
  color: #333;
  transition: all 0.5s;
  -webkit-transition: all 0.5s;
  -moz-transition: all 0.5s;
  -ms-transition: all 0.5s;
}
.ctn3 .ctn-top ul li:after {
  content: '';
  width: 0;
  height: 1px;
  background: var(--color);
  position: absolute;
  left: 50%;
  bottom: -1px;
  transition: all 0.5s;
  -webkit-transition: all 0.5s;
  -moz-transition: all 0.5s;
  -ms-transition: all 0.5s;
}
.ctn3 .ctn-top ul li:not(:last-child) {
  margin-right: 90px;
}
.ctn3 .ctn-top ul li:hover {
  color: var(--color);
}
.ctn3 .ctn-top ul li.active {
  color: var(--color);
}
.ctn3 .ctn-top ul li.active:after {
  width: 100%;
  left: 0;
}
.ctn3 .ctn-bottom {
  margin-top: 90px;
}
.ctn3 .ctn-bottom .box {
  display: flex;
  justify-content: space-between;
  align-items: center;
}
.ctn3 .ctn-bottom .box .left {
  display: flex;
  justify-content: space-between;
  width: 746px;
}
.ctn3 .ctn-bottom .box .left .swiper_left {
  width: 14%;
}
.ctn3 .ctn-bottom .box .left .swiper_left .swiper-container {
  height: 405px;
}
.ctn3 .ctn-bottom .box .left .swiper_left .swiper-container .swiper-slide {
  border: 1px solid transparent;
  cursor: pointer;
  background: url(../img/product/bg4.jpg) no-repeat;
  background-size: cover;
}
.ctn3 .ctn-bottom .box .left .swiper_left .swiper-container .swiper-slide.active {
  border: 1px solid var(--color);
}
.ctn3 .ctn-bottom .box .left .swiper_right {
  width: 84%;
}
.ctn3 .ctn-bottom .box .left .swiper_right .swiper-slide {
  height: 405px;
  background: url(../img/product/bg4.jpg) no-repeat;
  background-size: cover;
}
.ctn3 .ctn-bottom .box .left img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}
.ctn3 .ctn-bottom .box .right {
  width: calc(100% - 746px);
  padding-left: 6%;
}
.ctn3 .ctn-bottom .box .right .txt {
  margin-top: 30px;
}
.ctn3 .ctn-bottom .box .right .txt p {
  color: #666;
  position: relative;
  padding-left: 20px;
  line-height: 1.8;
}
.ctn3 .ctn-bottom .box .right .txt p:before {
  content: '';
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--blue);
  position: absolute;
  left: 0;
  top: 12px;
}
.ctn4 {
  position: relative;
  overflow: hidden;
  padding-top: 100px;
  background: url(../img/product/bg2.jpg) no-repeat;
  background-size: cover;
}
.ctn4 .ctn-list {
  margin-top: 60px;
  display: flex;
  justify-content: space-between;
  align-items: center;
}
.ctn4 .ctn-list .tu {
  width: 56.3%;
}
.ctn4 .ctn-list .tu img {
  width: 100%;
}
.ctn4 .ctn-list .text {
  width: 39.3%;
}
.ctn4 .ctn-list .text ul li {
  padding: 40px 0;
  border-bottom: 1px solid rgba(78, 190, 255, 0.3);
}
.ctn4 .ctn-list .text ul li h2 {
  color: #f4f7fd;
}
.ctn4 .ctn-list .text ul li .txt {
  margin-top: 10px;
}
.ctn4 .ctn-list .text ul li .txt p {
  color: #fff;
  line-height: 1.8;
}
.ctn4 .xian {
  margin-top: 40px;
  position: relative;
}
.ctn4 .xian img {
  width: 100%;
}
.ctn4 .xian ul {
  position: absolute;
  width: 100%;
  height: 100%;
  left: 0;
  top: 0;
}
.ctn4 .xian ul li {
  position: absolute;
  top: 0;
  width: 4%;
  height: 100%;
}
.ctn4 .xian ul li .yuan {
  position: absolute;
  left: 0;
  width: 13px;
  height: 13px;
  background: #fff;
  border: 2px solid #12eff2;
  border-radius: 50%;
  z-index: 1;
}
.ctn4 .xian ul li .yuan:before {
  content: '';
  width: 0;
  height: 0;
  border-radius: 50%;
  background: #fff;
  position: absolute;
  left: 50%;
  top: 50%;
  transform: translate(-50%, -50%);
  -webkit-transform: translate(-50%, -50%);
  -moz-transform: translate(-50%, -50%);
  -ms-transform: translate(-50%, -50%);
  transition: all 0.5s;
  -webkit-transition: all 0.5s;
  -moz-transition: all 0.5s;
  -ms-transition: all 0.5s;
}
.ctn4 .xian ul li .yuan:after {
  content: '';
  width: 0;
  height: 0;
  border-radius: 50%;
  background: #12eff2;
  position: absolute;
  left: 50%;
  top: 50%;
  transform: translate(-50%, -50%);
  -webkit-transform: translate(-50%, -50%);
  -moz-transform: translate(-50%, -50%);
  -ms-transform: translate(-50%, -50%);
  transition: all 0.5s;
  -webkit-transition: all 0.5s;
  -moz-transition: all 0.5s;
  -ms-transition: all 0.5s;
}
.ctn4 .xian ul li .txt {
  width: 326px;
  padding: 24px 50px;
  background: #fff;
  border-radius: 20px;
  box-shadow: 0px 18px 46px 0px rgba(61, 220, 222, 0.59);
  border: solid 1px rgba(18, 239, 242, 0.63);
  position: absolute;
  left: 50px;
  opacity: 0;
  z-index: 2;
  transition: all 0.5s;
  -webkit-transition: all 0.5s;
  -moz-transition: all 0.5s;
  -ms-transition: all 0.5s;
}
.ctn4 .xian ul li .txt:after {
  content: '';
  width: 15px;
  height: 22px;
  background: url(../img/product/jiao.png) no-repeat;
  background-size: contain;
  position: absolute;
  left: -15px;
  top: 25%;
}
.ctn4 .xian ul li .txt p {
  line-height: 1.8;
  color: #666;
}
.ctn4 .xian ul li .txt p span {
  font-weight: bold;
  color: var(--color);
}
.ctn4 .xian ul li.active .yuan:before {
  width: 20px;
  height: 20px;
}
.ctn4 .xian ul li.active .yuan:after {
  width: 10px;
  height: 10px;
}
.ctn4 .xian ul li.active .txt {
  opacity: 1;
}
.ctn4 .xian ul li:nth-child(1) {
  left: 17.2%;
}
.ctn4 .xian ul li:nth-child(1) .yuan {
  top: 58%;
}
.ctn4 .xian ul li:nth-child(1) .txt {
  top: 30%;
}
.ctn4 .xian ul li:nth-child(2) {
  left: 49.4%;
}
.ctn4 .xian ul li:nth-child(2) .yuan {
  top: 52%;
}
.ctn4 .xian ul li:nth-child(2) .txt {
  top: 24%;
}
.ctn4 .xian ul li:nth-child(3) {
  left: 81.1%;
}
.ctn4 .xian ul li:nth-child(3) .yuan {
  top: 34%;
}
.ctn4 .xian ul li:nth-child(3) .txt {
  top: 4%;
}
@media screen and (max-width: 1680px) {
  .ctn1 .text {
    top: 4.5vw;
  }
  .ctn2 {
    padding: 5vw 0 40px;
  }
  .ctn2 .ctn-list {
    margin-top: 4vw;
  }
  .ctn2 .ctn-list .text {
    padding-top: 3vw;
  }
  .ctn2 .ctn-list .text .mores {
    margin-top: 2vw;
  }
  .ctn2 .ctn-list .tu {
    left: 4vw;
  }
  .ctn3 {
    padding: 6vw 0;
  }
  .ctn3 .ctn-top ul li {
    padding-bottom: 14px;
  }
  .ctn3 .ctn-top ul li:not(:last-child) {
    margin-right: 4.5vw;
  }
  .ctn3 .ctn-bottom {
    margin-top: 4.5vw;
  }
  .ctn3 .ctn-bottom .box .left {
    width: 700px;
  }
  .ctn3 .ctn-bottom .box .left .swiper_left .swiper-container {
    height: 380px;
  }
  .ctn3 .ctn-bottom .box .left .swiper_right .swiper-slide {
    height: 380px;
  }
  .ctn3 .ctn-bottom .box .right {
    width: calc(100% - 700px);
  }
  .ctn3 .ctn-bottom .box .right .txt {
    margin-top: 1.5vw;
  }
  .ctn4 {
    padding-top: 5vw;
  }
  .ctn4 .ctn-list {
    margin-top: 3vw;
  }
  .ctn4 .ctn-list .text ul li {
    padding: 2vw 0;
  }
  .ctn4 .xian {
    margin-top: 2vw;
  }
  .ctn4 .xian ul li .txt {
    padding: 20px 40px;
    width: 300px;
  }
}
@media screen and (max-width: 1440px) {
  .ctn3 .ctn-bottom .box .left {
    width: 600px;
  }
  .ctn3 .ctn-bottom .box .left .swiper_left .swiper-container {
    height: 326px;
  }
  .ctn3 .ctn-bottom .box .left .swiper_right .swiper-slide {
    height: 326px;
  }
  .ctn3 .ctn-bottom .box .right {
    width: calc(100% - 600px);
  }
  .ctn4 .xian ul li .txt {
    width: 260px;
    padding: 20px;
  }
  .ctn4 .xian ul li:nth-child(1) {
    left: 17.1%;
  }
  .ctn4 .xian ul li:nth-child(2) {
    left: 49.3%;
  }
  .ctn4 .xian ul li:nth-child(3) {
    left: 81%;
  }
}
@media screen and (max-width: 1200px) {
  .ctn2 .ctn-list {
    align-items: center;
  }
  .ctn2 .ctn-list .text {
    width: 44%;
    padding-top: 0;
  }
  .ctn2 .ctn-list .tu {
    left: 0;
    width: 56%;
  }
  .ctn3 .ctn-bottom .box .left {
    width: 500px;
  }
  .ctn3 .ctn-bottom .box .left .swiper_left .swiper-container {
    height: 272px;
  }
  .ctn3 .ctn-bottom .box .left .swiper_right .swiper-slide {
    height: 272px;
  }
  .ctn3 .ctn-bottom .box .right {
    width: calc(100% - 500px);
    padding-left: 30px;
  }
  .ctn4 .xian ul li:nth-child(3) .txt {
    width: 190px;
  }
}
@media screen and (max-width: 1024px) {
  .ctn4 .xian ul li .txt {
    width: 220px;
    padding: 14px 20px;
    left: 30px;
  }
  .ctn4 .xian ul li:nth-child(1) {
    left: 17%;
  }
  .ctn4 .xian ul li:nth-child(2) {
    left: 49.2%;
  }
  .ctn4 .xian ul li:nth-child(3) {
    left: 80.9%;
  }
}
@media screen and (max-width: 768px) {
  .ctn1 {
    padding: 40px 0 20px;
  }
  .ctn1 .text {
    top: 0;
    position: relative;
  }
  .ctn1 .tu{
      padding:0;
  }
  .ctn1 .text .s-title {
    text-align: center;
  }
  .ctn1 img {
    margin-top: 30px;
    padding:0;
  }
  .ctn1 video {
    margin-top: 30px;
  }
  .ctn2 {
    padding: 40px 0;
  }
  .ctn2 .ctn-list {
    margin-top: 30px;
    display: block;
  }
  .ctn2 .ctn-list .tu {
    width: 100%;
  }
  .ctn2 .ctn-list .text {
    width: 100%;
    margin-top: 20px;
  }
  .ctn2 .ctn-list .text .txt p {
    padding-left: 18px;
  }
  .ctn2 .ctn-list .text .txt p:before {
    top: 9px;
  }
  .ctn2 .ctn-list .text .mores {
    margin-top: 20px;
  }
  .ctn3 {
    padding: 40px 0;
  }
  .ctn3 .ctn-top{
      padding:0 5%;
  }
  .ctn3 .ctn-top ul li{
      font-size: 14px;
      text-align: center;
  }
  .ctn3 .ctn-top ul li:not(:last-child) {
    margin-right: 6px;
  }
  .ctn3 .ctn-bottom {
    margin-top: 30px;
  }
  .ctn3 .ctn-bottom .box {
    display: block;
  }
  .ctn3 .ctn-bottom .box .left {
    width: 100%;
  }
  .ctn3 .ctn-bottom .box .left .swiper_left .swiper-container {
    height: 184px;
  }
  .ctn3 .ctn-bottom .box .left .swiper_right {
    width: 83%;
  }
  .ctn3 .ctn-bottom .box .left .swiper_right .swiper-slide {
    height: 184px;
  }
  .ctn3 .ctn-bottom .box .right {
    width: 100%;
    margin-top: 20px;
    padding-left: 0;
  }
  .ctn3 .ctn-bottom .box .right .txt {
    margin-top: 10px;
  }
  .ctn3 .ctn-bottom .box .right .txt p {
    padding-left: 18px;
  }
  .ctn3 .ctn-bottom .box .right .txt p:before {
    top: 9px;
  }
  .ctn4 {
    padding: 40px 0;
  }
  .ctn4 .ctn-list {
    margin-top: 30px;
    display: block;
  }
  .ctn4 .ctn-list .tu {
    width: 100%;
  }
  .ctn4 .ctn-list .text {
    width: 100%;
  }
  .ctn4 .ctn-list .text ul li {
    padding: 20px 0;
  }
  .ctn4 .ctn-list .text ul li .txt p {
    line-height: 1.6;
  }
  .ctn4 .xian {
    margin-top: 20px;
  }
  .ctn4 .xian img {
    display: none;
  }
  .ctn4 .xian ul {
    position: relative;
  }
  .ctn4 .xian ul li {
    position: relative;
    width: 100%;
    left: 0!important;
    top: 0!important;
    margin-top: 14px;
  }
  .ctn4 .xian ul li .yuan {
    display: none;
  }
  .ctn4 .xian ul li .txt {
    position: relative;
    width: 100%!important;
    left: 0!important;
    top: 0!important;
    opacity: 1!important;
  }
  .ctn4 .xian ul li .txt:after {
    display: none;
  }
}