.ctn1 {
  padding: 50px 0 80px;
  background: #f6f8fa;
  overflow: hidden;
}
.ctn1 .con {
  display: flex;
  justify-content: space-between;
  align-items: center;
}
.ctn1 .con .left {
  width: 50%;
}
.ctn1 .con .left p {
  line-height: 1.8;
  text-align: justify;
  color: #666;
  margin-top: 20px;
}
.ctn1 .con .right {
  width: 49%;
}
.ctn1 .con .right img {
  width: 100%;
  transition: all 0.5s;
  -webkit-transition: all 0.5s;
  -moz-transition: all 0.5s;
  -ms-transition: all 0.5s;
}
.ctn1 .con .right:hover img {
  transform: scale(1.05);
  -webkit-transform: scale(1.05);
  -moz-transform: scale(1.05);
  -ms-transform: scale(1.05);
}
.ctn2 {
  padding: 100px 0;
  overflow: hidden;
}
.ctn2 .tu {
  margin-top: 60px;
}
.ctn2 .tu img {
  width: 100%;
}
.ctn3 {
  overflow: hidden;
  position: relative;
}
.ctn3 .s-title {
  position: absolute;
  width: 100%;
  left: 0;
  top: 7%;
}
.ctn3 .tu img {
  width: 100%;
}
.ctn3 .ctn-list {
  position: absolute;
  width: 100%;
  left: 0;
  bottom: 10%;
}
.ctn3 .ctn-list ul {
  display: flex;
  justify-content: space-between;
}
.ctn3 .ctn-list ul li {
  width: 32%;
  background-image: url(../img/cloud/k1.png);
  background-size: 100% 100%;
  padding: 30px 40px 40px;
}
.ctn3 .ctn-list ul li h2 {
  color: #fff;
  position: relative;
}
.ctn3 .ctn-list ul li h2:before {
  content: '';
  width: 230px;
  height: 25px;
  background: url(../img/cloud/xian.png) no-repeat;
  background-size: contain;
  position: absolute;
  left: 0;
  top: -8px;
}
.ctn3 .ctn-list ul li .text {
  display: flex;
  justify-content: space-between;
}
.ctn3 .ctn-list ul li .text p {
  color: #fff;
  line-height: 1.8;
  position: relative;
  padding-left: 12px;
  margin-top: 16px;
}
.ctn3 .ctn-list ul li .text p:before {
  content: '';
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: #fff;
  position: absolute;
  left: 0;
  top: 11px;
}
.ctn3 .ctn-list ul li .text .half {
  width: 60%;
}
.ctn3 .ctn-list ul li .text .half:nth-child(2) {
  width: 40%;
}
.ctn3 .ctn-list ul li:nth-child(2) {
  background-image: url(../img/cloud/k2.png);
}
.ctn3 .ctn-list ul li:nth-child(3) {
  background-image: url(../img/cloud/k3.png);
}
.ctn4 {
  padding: 120px 0 140px;
  overflow: hidden;
}
.ctn4 .ctn-list {
  margin-top: 80px;
  position: relative;
}
.ctn4 .ctn-list .tu {
  position: absolute;
  height: calc(100% + 48px);
  left: 0;
  bottom: 6px;
  overflow: hidden;
}
.ctn4 .ctn-list .tu img {
  width: auto;
  height: 100%;
}
.ctn4 .ctn-list .text {
  border-radius: 20px;
  overflow: hidden;
  background: url(../img/cloud/bg1.png) no-repeat;
  background-size: cover;
  padding: 100px 110px 120px 0;
  display: flex;
  justify-content: flex-end;
}
.ctn4 .ctn-list .text .box {
  width: 744px;
}
.ctn4 .ctn-list .text .box .top {
  color: #fff;
}
.ctn4 .ctn-list .text .box .top p {
  line-height: 1.8;
  text-align: justify;
}
.ctn4 .ctn-list .text .box .bottom {
  margin-top: 40px;
  display: flex;
  border-top: 1px solid rgba(64, 129, 187, 0.8);
}
.ctn4 .ctn-list .text .box .bottom h2 {
  color: #fff;
  line-height: 1.8;
  height: 85px;
  display: flex;
  align-items: center;
}
.ctn4 .ctn-list .text .box .bottom .erweima {
  width: 85px;
  height: 85px;
  border-radius: 6px;
  background: #fff;
  padding: 6px;
  margin-right: 8px;
  flex-shrink: 0;
}
.ctn4 .ctn-list .text .box .bottom .erweima img {
  width: 100%;
}
.ctn4 .ctn-list .text .box .bottom .left {
  flex: 1;
  padding-top: 40px;
  padding-right:14px;
}
.ctn4 .ctn-list .text .box .bottom .middle {
  width: 285px;
  border-left: 1px solid rgba(64, 129, 187, 0.8);
  border-right: 1px solid rgba(64, 129, 187, 0.8);
  padding: 40px 14px 20px;
  display: flex;
  justify-content: center;
}
.ctn4 .ctn-list .text .box .bottom .right {
  width: 285px;
  display: flex;
  padding-top: 40px;
  justify-content: flex-end;
  padding-left:14px;
}
@media screen and (max-width: 1680px) {
  .ctn1 {
    padding: 2.5vw 0 4vw;
  }
  .ctn2 {
    padding: 5vw 0;
  }
  .ctn2 .tu {
    margin-top: 3vw;
  }
  .ctn3 .ctn-list ul li {
    padding: 1.5vw 2vw 2vw;
  }
  .ctn3 .ctn-list ul li .text {
    font-size: 14px;
  }
  .ctn3 .ctn-list ul li .text p:before {
    width: 4px;
    height: 4px;
  }
  .ctn4 {
    padding: 6vw 0 7vw;
  }
  .ctn4 .ctn-list .text {
    padding: 5vw 5.5vw 6vw 0;
  }
  .ctn4 .ctn-list .text .box {
    width: 650px;
  }
  .ctn4 .ctn-list .text .box .top {
    font-size: 14px;
  }
  .ctn4 .ctn-list .text .box .bottom h2 {
    font-size: 14px;
  }
  .ctn4 .ctn-list .text .box .bottom .left {
    padding-top: 30px;
  }
  .ctn4 .ctn-list .text .box .bottom .middle {
    padding: 30px 0 20px;
    width: 250px;
  }
  .ctn4 .ctn-list .text .box .bottom .right {
    padding-top: 30px;
    width: 250px;
  }
}
@media screen and (max-width: 1440px) {
  .ctn3 .ctn-list ul li h2:before {
    width: 200px;
    top: -5px;
  }
  .ctn3 .ctn-list ul li .text p {
    margin-top: 10px;
  }
  .ctn4 .ctn-list .text .box .bottom .left {
    padding-top: 20px;
  }
  .ctn4 .ctn-list .text .box .bottom .middle {
    padding: 20px 14px 20px;
  }
  .ctn4 .ctn-list .text .box .bottom .right {
    padding-top: 20px;
  }
}
@media screen and (max-width: 1366px) {
  .ctn4 .ctn-list .text {
    padding: 50px 60px 60px 0;
  }
  .ctn4 .ctn-list .text .box {
    width: 580px;
  }
  .ctn4 .ctn-list .text .box .bottom h2 {
    font-size: 12px;
  }
  .ctn4 .ctn-list .text .box .bottom .middle {
    width: 230px;
  }
  .ctn4 .ctn-list .text .box .bottom .right {
    width: 230px;
  }
}
@media screen and (max-width: 1200px) {
  .ctn3 .ctn-list {
    bottom: 8%;
  }
  .ctn3 .ctn-list ul li h2:before {
    width: 140px;
    top: -2px;
  }
  .ctn3 .ctn-list ul li .text {
    font-size: 12px;
  }
  .ctn3 .ctn-list ul li .text p {
    padding-left: 10px;
    margin-top: 6px;
  }
  .ctn3 .ctn-list ul li .text p:before {
    top: 9px;
  }
}
@media screen and (max-width: 1120px) {
  .ctn4 .ctn-list .tu img {
    position: relative;
    left: -70px;
  }
  .ctn4 .ctn-list .text {
    padding: 40px 40px 40px 0;
  }
  .ctn4 .ctn-list .text .box .bottom {
    margin-top: 30px;
  }
}
@media screen and (max-width: 768px) {
  .ctn1 {
    padding: 40px 0;
  }
  .ctn1 .con {
    display: block;
  }
  .ctn1 .con .left {
    width: 100%;
  }
  .ctn1 .con .left p {
    margin-top: 14px;
    line-height: 1.6;
  }
  .ctn1 .con .right {
    width: 100%;
    margin-top: 30px;
  }
  .ctn2 {
    padding: 40px 0;
  }
  .ctn2 .tu {
    margin-top: 30px;
  }
  .ctn3 .s-title {
    top: 0;
    color: #333 !important;
    position: relative;
  }
  .ctn3 .tu {
    padding: 0 5%;
    margin-top: 20px;
  }
  .ctn3 .tu img {
    border-radius: 10px;
  }
  .ctn3 .ctn-list {
    position: relative;
    bottom: 0;
  }
  .ctn3 .ctn-list ul {
    display: block;
  }
  .ctn3 .ctn-list ul li {
    width: 100%;
    margin-top: 14px;
    padding: 20px;
    border-radius: 10px;
  }
  .ctn4 {
    padding: 40px 0;
  }
  .ctn4 .ctn-list {
    margin-top: 30px;
  }
  .ctn4 .ctn-list .tu {
    position: relative;
    bottom: 0;
  }
  .ctn4 .ctn-list .tu img {
    width: 100%;
    left: -6px;
    height: auto;
  }
  .ctn4 .ctn-list .text {
    border-radius: 10px;
    padding: 20px;
    margin-top: 20px;
  }
  .ctn4 .ctn-list .text .box {
    width: 100%;
  }
  .ctn4 .ctn-list .text .box .top p {
    line-height: 1.6;
  }
  .ctn4 .ctn-list .text .box .bottom {
    display: block;
    margin-top: 20px;
  }
  .ctn4 .ctn-list .text .box .bottom h2 {
    width: 126px;
    line-height: 1.6;
    height: auto;
  }
  .ctn4 .ctn-list .text .box .bottom .left {
    display: flex;
    justify-content: center;
  }
  .ctn4 .ctn-list .text .box .bottom .middle {
    width: 100%;
    border-left: none;
    border-right: none;
    padding: 0;
    margin: 20px 0;
  }
  .ctn4 .ctn-list .text .box .bottom .right {
    width: 100%;
    padding: 0;
    justify-content: center;
  }
}