.ctn1 {
  position: relative;
  background: #fafafa;
  padding: 120px 0 80px;
  overflow: hidden;
}
.ctn1 .title h2 {
  color: var(--color);
}
.ctn1 .title p {
  margin-top: 20px;
  color: #666;
}
.ctn1 .ctn-list ul {
  display: flex;
  flex-wrap: wrap;
}
.ctn1 .ctn-list ul li {
  width: 30%;
  margin-top: 40px;
  background: #fff;
  border-radius: 20px;
  text-align: center;
  transition: all 0.5s;
  -webkit-transition: all 0.5s;
  -moz-transition: all 0.5s;
  -ms-transition: all 0.5s;
}
.ctn1 .ctn-list ul li a {
  display: block;
  padding: 50px 0;
}
.ctn1 .ctn-list ul li a h2 {
  transition: all 0.5s;
  -webkit-transition: all 0.5s;
  -moz-transition: all 0.5s;
  -ms-transition: all 0.5s;
}
.ctn1 .ctn-list ul li a h3 {
  margin-top: 10px;
  color: #666;
}
.ctn1 .ctn-list ul li a h3 .iconfont {
  color: var(--color);
}
.ctn1 .ctn-list ul li:not(:nth-child(3n)) {
  margin-right: 5%;
}
.ctn1 .ctn-list ul li:hover {
  box-shadow: 2px 2px 30px 0px rgba(29, 34, 39, 0.1);
}
.ctn1 .ctn-list ul li:hover a h2 {
  color: var(--color);
}
.ctn2 {
  padding: 160px 0;
  overflow: hidden;
}
.ctn2 .con {
  display: flex;
  justify-content: space-between;
  align-items: center;
}
.ctn2 .con .left {
  width: 48.6%;
}
.ctn2 .con .left .text p {
  line-height: 1.8;
  text-align: justify;
  margin-top: 20px;
  color: #666;
}
.ctn2 .con .right {
  width: 47.4%;
  border-radius: 20px;
  overflow: hidden;
}
.ctn2 .con .right img {
  width: 100%;
  transition: all 0.5s;
  -webkit-transition: all 0.5s;
  -moz-transition: all 0.5s;
  -ms-transition: all 0.5s;
}
.ctn2 .con .right:hover img {
  transform: scale(1.05);
  -webkit-transform: scale(1.05);
  -moz-transform: scale(1.05);
  -ms-transform: scale(1.05);
}
.ctn3 {
  padding: 160px 0;
  background: #fafafa;
  overflow: hidden;
}
.ctn3 .con {
  display: flex;
  justify-content: space-between;
  align-items: center;
}
.ctn3 .con .left {
  width: 49.8%;
  order: 2;
}
.ctn3 .con .left h3 {
  color: var(--color);
  margin-top: 20px;
}
.ctn3 .con .left .text p {
  line-height: 1.8;
  text-align: justify;
  margin-top: 20px;
  color: #666;
}
.ctn3 .con .right {
  width: 47.4%;
  border-radius: 20px;
  overflow: hidden;
}
.ctn3 .con .right img {
  width: 100%;
  transition: all 0.5s;
  -webkit-transition: all 0.5s;
  -moz-transition: all 0.5s;
  -ms-transition: all 0.5s;
}
.ctn3 .con .right:hover img {
  transform: scale(1.05);
  -webkit-transform: scale(1.05);
  -moz-transform: scale(1.05);
  -ms-transform: scale(1.05);
}
.ctn4 {
  padding: 100px 0 160px;
  overflow: hidden;
  position: relative;
}
.ctn4 .con {
  position: relative;
  z-index: 2;
}
.ctn4 .con .ctn-list {
  margin-top: 90px;
}
.ctn4 .con .ctn-list .swiper-container {
  overflow: inherit;
}
.ctn4 .con .ctn-list .swiper-container .swiper-slide {
  width: 234px;
  height: 526px;
  display: flex;
  align-items: center;
  cursor: pointer;
  transition: all 0.5s;
  -webkit-transition: all 0.5s;
  -moz-transition: all 0.5s;
  -ms-transition: all 0.5s;
}
.ctn4 .con .ctn-list .swiper-container .swiper-slide .tu {
  width: 100%;
  height: auto!important;
  border-radius: 20px;
  overflow: hidden;
  transition: all 0.5s;
  -webkit-transition: all 0.5s;
  -moz-transition: all 0.5s;
  -ms-transition: all 0.5s;
}
.ctn4 .con .ctn-list .swiper-container .swiper-slide .tu img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: all 0.5s;
  -webkit-transition: all 0.5s;
  -moz-transition: all 0.5s;
  -ms-transition: all 0.5s;
}
.ctn4 .con .ctn-list .swiper-container .swiper-slide .tu:hover img {
  transform: scale(1.05);
  -webkit-transform: scale(1.05);
  -moz-transform: scale(1.05);
  -ms-transform: scale(1.05);
}
.ctn4 .con .ctn-list .swiper-container .swiper-slide-active {
  width: 526px;
}
.ctn4 .con .ctn-list .swiper-container .swiper-slide-active .tu {
  height: auto!important;
}
.ctn4 .bg {
  position: absolute;
  width: 100%;
  left: 0;
  bottom: 0;
  z-index: 1;
}
.ctn4 .bg img {
  width: 100%;
}
@media screen and (max-width: 1680px) {
  .ctn1 {
    padding: 6vw 0 4vw;
  }
  .ctn1 .ctn-list ul li {
    margin-top: 30px;
  }
  .ctn1 .ctn-list ul li a {
    padding: 40px 0;
  }
  .ctn2 {
    padding: 8vw 0;
  }
  .ctn3 {
    padding: 8vw 0;
  }
  .ctn4 {
    padding: 5vw 0 8vw;
  }
  .ctn4 .con .ctn-list {
    margin-top: 4.5vw;
  }
  .ctn4 .con .ctn-list .swiper-container .swiper-slide {
    width: 200px;
    height: 426px;
  }
  .ctn4 .con .ctn-list .swiper-container .swiper-slide .tu {
    height: 200px;
  }
  .ctn4 .con .ctn-list .swiper-container .swiper-slide-active {
    width: 426px;
  }
  .ctn4 .con .ctn-list .swiper-container .swiper-slide-active .tu {
    height: 426px;
  }
}
@media screen and (max-width: 1440px) {
  .ctn1 .ctn-list ul li a {
    padding: 30px 0;
  }
  .ctn2 .con .left .text p {
    margin-top: 14px;
  }
  .ctn3 .con .left h3 {
    margin-top: 14px;
  }
  .ctn3 .con .left .text p {
    margin-top: 14px;
  }
}
@media screen and (max-width: 1200px) {
  .ctn4 .con .ctn-list .swiper-container .swiper-slide {
    width: 160px;
    height: 380px;
  }
  .ctn4 .con .ctn-list .swiper-container .swiper-slide .tu {
    height: 160px;
  }
  .ctn4 .con .ctn-list .swiper-container .swiper-slide-active {
    width: 380px;
  }
  .ctn4 .con .ctn-list .swiper-container .swiper-slide-active .tu {
    height: 380px;
  }
}
@media screen and (max-width: 768px) {
  .ctn1 {
    padding: 40px 0;
  }
  .ctn1 .title p {
    margin-top: 14px;
  }
  .ctn1 .ctn-list {
    margin-top: 6px;
  }
  .ctn1 .ctn-list ul {
    justify-content: space-between;
  }
  .ctn1 .ctn-list ul li {
    width: 48.5%;
    margin-top: 14px;
    margin-right: 0!important;
  }
  .ctn1 .ctn-list ul li a {
    padding: 20px 0;
  }
  .ctn2 {
    padding: 40px 0;
  }
  .ctn2 .con {
    display: block;
  }
  .ctn2 .con .left {
    width: 100%;
  }
  .ctn2 .con .left .text {
    margin-top: 20px;
  }
  .ctn2 .con .left .text p {
    margin-top: 10px;
    line-height: 1.6;
  }
  .ctn2 .con .right {
    width: 100%;
    border-radius: 10px;
    margin-top: 20px;
  }
  .ctn3 {
    padding: 40px 0;
  }
  .ctn3 .con {
    display: block;
  }
  .ctn3 .con .left {
    width: 100%;
  }
  .ctn3 .con .left .text p {
    margin-top: 10px;
    line-height: 1.6;
  }
  .ctn3 .con .right {
    width: 100%;
    border-radius: 10px;
    margin-top: 20px;
  }
  .ctn4 {
    padding: 40px 0;
    margin-bottom: 40px;
  }
  .ctn4 .con .ctn-list {
    margin-top: 20px;
  }
  .ctn4 .con .ctn-list .swiper-container .swiper-slide {
    height: auto!important;
  }
  .ctn4 .con .ctn-list .swiper-container .swiper-slide .tu {
    border-radius: 10px;
    height: auto!important;
  }
}