.ctn1 {
  position: relative;
  overflow: hidden;
}
.ctn1 .content {
  position: absolute;
  width: 100%;
  left: 0;
  top: 50%;
  transform: translateY(-50%);
  -webkit-transform: translateY(-50%);
  -moz-transform: translateY(-50%);
  -ms-transform: translateY(-50%);
  z-index: 2;
}
.ctn1 .content .left {
  width: 40.5%;
  color: #fff;
}
.ctn1 .content .left .text p {
  margin-top: 20px;
  line-height: 1.8;
}
.ctn1 .content .left .text p strong {
  font-weight: 600;
}
.ctn1 .content .left ul {
  margin-top: 60px;
}
.ctn1 .content .left ul li {
  margin-top: 20px;
  position: relative;
  padding-left: 34px;
}
.ctn1 .content .left ul li:before {
  content: '';
  width: 22px;
  height: 22px;
  background: url(../img/service/energy/dui_white.svg);
  background-size: contain;
  position: absolute;
  left: 0;
  top: 2px;
}
.ctn1 .bg {
  position: relative;
  overflow: hidden;
  z-index: 1;
}
.ctn1 .bg:before {
  content: '';
  display: block;
  padding-top: calc(900 / 1920 * 100%);
}
.ctn1 .bg img {
  position: absolute;
  width: 100%;
  height: 100%;
  object-fit: cover;
  left: 0;
  top: 0;
}
.ctn2 {
  position: relative;
  background: #F7F9FB;
  overflow: hidden;
}
.ctn2 .ctn-list .swiper-container {
  overflow: initial;
}
.ctn2 .ctn-list .swiper-slide {
  height: auto;
  border-radius: 10px;
  background: #fff;
  padding: 60px 40px 40px;
}
.ctn2 .ctn-list .swiper-slide .icons {
  width: 50px;
  height: 50px;
  border-radius: 10px;
  background: #000;
  display: flex;
  align-items: center;
  justify-content: center;
}
.ctn2 .ctn-list .swiper-slide .icons img {
  width: 18px;
}
.ctn2 .ctn-list .swiper-slide h2 {
  margin-top: 20px;
  height: 80px;
}
.ctn2 .ctn-list .swiper-slide h3 {
  margin-bottom: 20px;
}
.ctn2 .ctn-list .swiper-slide p {
  margin-bottom: 20px;
}
.ctn2 .ctn-list .swiper-slide ul li {
  position: relative;
  padding-left: 34px;
}
.ctn2 .ctn-list .swiper-slide ul li:before {
  content: '';
  width: 22px;
  height: 22px;
  background: url(../img/service/energy/dui_black.svg);
  background-size: contain;
  position: absolute;
  left: 0;
  top: 2px;
}
.ctn2 .ctn-list .swiper-slide ul li:not(:first-child) {
  margin-top: 20px;
}
.ctn2 .ctn-list .swiper-slide:hover .icons img {
  -webkit-animation: wobble 1s;
  animation: wobble 1s;
}
.ctn3 {
  position: relative;
  background: #F7F9FB;
  overflow: hidden;
}
.ctn3 .bottom {
  position: relative;
}
.ctn3 .bottom .content {
  position: absolute;
  width: 100%;
  height: 100%;
  left: 0;
  top: 0;
  z-index: 2;
}
.ctn3 .bottom .content ul {
  position: absolute;
  width: 100%;
  height: 100%;
  left: 0;
  top: 0;
  display: flex;
}
.ctn3 .bottom .content ul li {
  flex: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  transition: all 0.5s;
  -webkit-transition: all 0.5s;
  -moz-transition: all 0.5s;
  -ms-transition: all 0.5s;
}
.ctn3 .bottom .content ul li h2 {
  color: #fff;
  text-align: center;
  padding: 0 20px;
  transition: all 0.5s;
  -webkit-transition: all 0.5s;
  -moz-transition: all 0.5s;
  -ms-transition: all 0.5s;
}
.ctn3 .bottom .content ul li .masks {
  opacity: 0;
  position: absolute;
  width: 100%;
  padding: 0 80px;
  top: 55%;
  transform: translateY(-50%);
  -webkit-transform: translateY(-50%);
  -moz-transform: translateY(-50%);
  -ms-transform: translateY(-50%);
  color: #fff;
}
.ctn3 .bottom .content ul li .masks dl {
  margin-top: 24px;
}
.ctn3 .bottom .content ul li .masks dl dd {
  position: relative;
  padding-left: 34px;
}
.ctn3 .bottom .content ul li .masks dl dd:before {
  content: '';
  width: 22px;
  height: 22px;
  background: url(../img/service/energy/dui_white.svg);
  background-size: contain;
  position: absolute;
  left: 0;
  top: 2px;
}
.ctn3 .bottom .content ul li .masks dl dd:not(:first-child) {
  margin-top: 20px;
}
.ctn3 .bottom .content ul li:not(:last-child) {
  border-right: 1px solid rgba(255, 255, 255, 0.3);
}
.ctn3 .bottom .content ul li:hover {
  flex: 0 0 60%;
}
.ctn3 .bottom .content ul li:hover h2 {
  opacity: 0;
}
.ctn3 .bottom .content ul li:hover .masks {
  opacity: 1;
  top: 50%;
  transition: all 0.5s ease 0.4s;
  -webkit-transition: all 0.5s ease 0.4s;
  -moz-transition: all 0.5s ease 0.4s;
  -ms-transition: all 0.5s ease 0.4s;
}
.ctn3 .bottom .bg {
  position: relative;
  overflow: hidden;
  z-index: 1;
}
.ctn3 .bottom .bg:before {
  content: '';
  display: block;
  padding-top: calc(900 / 1920 * 100%);
}
.ctn3 .bottom .bg img {
  position: absolute;
  width: 100%;
  height: 100%;
  object-fit: cover;
  left: 0;
  top: 0;
}
.ctn4 {
  position: relative;
  overflow: hidden;
  background: linear-gradient(180deg, #FFFFFF 0%, #F7F9FB 100%);
}
.ctn4 .con {
  display: flex;
  justify-content: flex-end;
  position: relative;
}
.ctn4 .con .left {
  width: 38%;
  position: absolute;
  left: 0;
  bottom: 0;
}
.ctn4 .con .left img {
  width: 100%;
}
.ctn4 .con .right {
  width: 50%;
  padding: 230px 0 110px;
}
.ctn4 .con .right p {
  color: #666;
  margin-top: 20px;
}
.ctn4 .con .right ul {
  display: flex;
  flex-wrap: wrap;
  margin-top: 40px;
}
.ctn4 .con .right ul li {
  width: 50%;
  margin-top: 40px;
  position: relative;
  padding-left: 45px;
}
.ctn4 .con .right ul li:before {
  content: '';
  width: 32px;
  height: 32px;
  background: url(../img/service/energy/dui_black.svg);
  background-size: contain;
  position: absolute;
  left: 0;
  top: 4px;
}
.ctn5 {
  position: relative;
  overflow: hidden;
}
.ctn5 .content {
  position: absolute;
  width: 100%;
  left: 0;
  top: 50%;
  transform: translateY(-50%);
  -webkit-transform: translateY(-50%);
  -moz-transform: translateY(-50%);
  -ms-transform: translateY(-50%);
  z-index: 2;
}
.ctn5 .content .left {
  width: 40.5%;
  color: #fff;
}
.ctn5 .content .left .text p {
  margin-top: 20px;
  line-height: 1.8;
}
.ctn5 .content .left .text p strong {
  font-weight: 600;
}
.ctn5 .content .left ul {
  margin-top: 60px;
}
.ctn5 .content .left ul li {
  margin-top: 20px;
  position: relative;
  padding-left: 34px;
}
.ctn5 .content .left ul li:before {
  content: '';
  width: 22px;
  height: 22px;
  background: url(../img/service/energy/dui_white.svg);
  background-size: contain;
  position: absolute;
  left: 0;
  top: 2px;
}
.ctn5 .bottom {
  position: absolute;
  width: 100%;
  left: 0;
  bottom: 40px;
  z-index: 3;
}
.ctn5 .bottom p {
  color: #fff;
}
.ctn5 .bottom p strong {
  font-weight: 700;
}
.ctn5 .bg {
  position: relative;
  overflow: hidden;
  z-index: 1;
}
.ctn5 .bg:before {
  content: '';
  display: block;
  padding-top: calc(900 / 1920 * 100%);
}
.ctn5 .bg img {
  position: absolute;
  width: 100%;
  height: 100%;
  object-fit: cover;
  left: 0;
  top: 0;
}
@media screen and (max-width: 1680px) {
  .ctn1 .content .left .text p {
    margin-top: 14px;
  }
  .ctn1 .content .left ul {
    margin-top: 3vw;
  }
  .ctn1 .content .left ul li {
    padding-left: 30px;
    margin-top: 14px;
  }
  .ctn1 .content .left ul li:before {
    width: 20px;
    height: 20px;
    top: 1px;
  }
  .ctn2 .ctn-list .swiper-slide {
    padding: 3vw 2vw 2vw;
  }
  .ctn2 .ctn-list .swiper-slide .icons {
    width: 44px;
    height: 44px;
  }
  .ctn2 .ctn-list .swiper-slide h2 {
    height: 70px;
  }
  .ctn2 .ctn-list .swiper-slide h3 {
    margin-bottom: 14px;
  }
  .ctn2 .ctn-list .swiper-slide p {
    margin-bottom: 14px;
  }
  .ctn2 .ctn-list .swiper-slide ul li {
    padding-left: 30px;
  }
  .ctn2 .ctn-list .swiper-slide ul li:before {
    width: 20px;
    height: 20px;
    top: 1px;
  }
  .ctn2 .ctn-list .swiper-slide ul li:not(:first-child) {
    margin-top: 14px;
  }
  .ctn3 .bottom .content ul li .masks {
    padding: 0 4vw;
  }
  .ctn3 .bottom .content ul li .masks dl {
    margin-top: 20px;
  }
  .ctn3 .bottom .content ul li .masks dl dd {
    padding-left: 30px;
  }
  .ctn3 .bottom .content ul li .masks dl dd:before {
    width: 20px;
    height: 20px;
    top: 1px;
  }
  .ctn3 .bottom .content ul li .masks dl dd:not(:first-child) {
    margin-top: 14px;
  }
  .ctn4 .con .right {
    padding: 11.5vw 0 5.5vw;
  }
  .ctn4 .con .right p {
    margin-top: 14px;
  }
  .ctn4 .con .right ul {
    margin-top: 2vw;
  }
  .ctn4 .con .right ul li {
    margin-top: 2vw;
    padding-left: 38px;
  }
  .ctn4 .con .right ul li:before {
    width: 28px;
    height: 28px;
    top: 2px;
  }
  .ctn5 .content .left .text p {
    margin-top: 14px;
  }
  .ctn5 .content .left ul {
    margin-top: 3vw;
  }
  .ctn5 .content .left ul li {
    padding-left: 30px;
    margin-top: 14px;
  }
  .ctn5 .content .left ul li:before {
    width: 20px;
    height: 20px;
    top: 1px;
  }
  .ctn5 .bottom {
    bottom: 2vw;
  }
}
@media screen and (max-width: 1200px) {
  .ctn1 .content .left {
    width: 56%;
  }
  .ctn4 .con .right {
    padding: 16vw 0 6vw;
  }
  .ctn4 .con .right ul {
    font-size: 18px;
  }
  .ctn4 .con .right ul li {
    padding-left: 30px;
  }
  .ctn4 .con .right ul li:before {
    width: 24px;
    height: 24px;
    top: 1px;
  }
  .ctn5 .content .left {
    width: 56%;
  }
}
@media screen and (max-width: 768px) {
  .ctn1 {
    padding: 12vw 0;
  }
  .ctn1 .content {
    position: relative;
    top: 0;
    transform: translateY(0);
    -webkit-transform: translateY(0);
    -moz-transform: translateY(0);
    -ms-transform: translateY(0);
  }
  .ctn1 .content .left {
    width: 100%;
    color: #333;
  }
  .ctn1 .content .left .text {
    margin-top: 14px;
  }
  .ctn1 .content .left .text p {
    line-height: 1.6;
    margin-top: 10px;
  }
  .ctn1 .content .left ul li:before {
    background-image: url(../img/service/energy/dui_black.svg);
  }
  .ctn1 .bg {
    width: 90%;
    margin: 20px auto 0;
    border-radius: 10px;
  }
  .ctn2 .ctn-list .swiper-slide {
    padding: 20px;
  }
  .ctn2 .ctn-list .swiper-slide h2 {
    height: auto;
    margin-bottom: 20px;
  }
  .ctn3 {
    padding-bottom: 12vw;
  }
  .ctn3 .bottom .content {
    position: relative;
  }
  .ctn3 .bottom .content ul {
    position: relative;
    display: block;
  }
  .ctn3 .bottom .content ul li {
    width: 100%;
  }
  .ctn3 .bottom .content ul li h2 {
    display: none;
  }
  .ctn3 .bottom .content ul li .masks {
    opacity: 1;
    padding: 0 5%;
    position: relative;
    top: 0;
    transform: translateY(0);
    -webkit-transform: translateY(0);
    -moz-transform: translateY(0);
    -ms-transform: translateY(0);
    color: #333;
  }
  .ctn3 .bottom .content ul li .masks dl dd:before {
    background-image: url(../img/service/energy/dui_black.svg);
  }
  .ctn3 .bottom .content ul li:not(:first-child) {
    margin-top: 30px;
  }
  .ctn3 .bottom .bg {
    width: 90%;
    margin: 20px auto 0;
    border-radius: 10px;
  }
  .ctn4 {
    padding-top: 12vw;
  }
  .ctn4 .con {
    display: block;
  }
  .ctn4 .con .left {
    width: 100%;
    position: relative;
    margin-top: 30px;
    border-radius: 10px;
    overflow: hidden;
  }
  .ctn4 .con .right {
    width: 100%;
    padding: 0;
  }
  .ctn4 .con .right ul li {
    width: 100%;
    margin-top: 20px;
  }
  .ctn5 {
    padding: 12vw 0;
  }
  .ctn5 .content {
    position: relative;
    top: 0;
    transform: translateY(0);
    -webkit-transform: translateY(0);
    -moz-transform: translateY(0);
    -ms-transform: translateY(0);
  }
  .ctn5 .content .left {
    width: 100%;
    color: #333;
  }
  .ctn5 .content .left .text {
    margin-top: 14px;
  }
  .ctn5 .content .left .text p {
    line-height: 1.6;
    margin-top: 10px;
  }
  .ctn5 .content .left ul li:before {
    background-image: url(../img/service/energy/dui_black.svg);
  }
  .ctn5 .bottom {
    bottom: 0;
    position: relative;
    margin-top: 20px;
  }
  .ctn5 .bottom p {
    color: #333;
  }
  .ctn5 .bg {
    width: 90%;
    margin: 20px auto 0;
    border-radius: 10px;
  }
}