.ctn1 {
  padding-top: 100px;
  overflow: hidden;
}
.ctn1 h1 {
  text-align: center;
}
.ctn1 h3 {
  display: flex;
  justify-content: center;
  align-items: center;
  color: #999;
  margin-top: 14px;
}
.ctn1 h3 svg {
  margin-right: 2px;
}
.ctn1 .text {
  margin-top: 50px;
}
.ctn1 .text p {
  margin-top: 20px;
  color: #666;
  line-height: 1.8;
  text-align: justify;
}
.ctn1 .text img {
  max-width: 100%!important;
  border-radius: 20px;
  height: auto!important;
}
.ctn1 .turn {
  display: flex;
  justify-content: space-between;
  padding: 100px 0 120px;
  border-bottom: 1px solid rgba(0, 0, 0, 0.1);
}
.ctn1 .turn .t-box {
  width: 40%;
}
.ctn1 .turn .t-box a {
  display: flex;
  color: #777;
  transition: all 0.5s;
  -webkit-transition: all 0.5s;
  -moz-transition: all 0.5s;
  -ms-transition: all 0.5s;
}
.ctn1 .turn .t-box a span:nth-child(1) {
  flex-shrink: 0;
}
.ctn1 .turn .t-box a span:nth-child(2) {
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.ctn1 .turn .t-box a:hover {
  color: var(--blue);
}
.ctn1 .turn .back {
  position: absolute;
  width: 76px;
  height: 76px;
  border-radius: 50%;
  background: rgba(48, 101, 213, 0.1);
  left: 50%;
  top: 50%;
  transform: translate(-50%, -50%);
  -webkit-transform: translate(-50%, -50%);
  -moz-transform: translate(-50%, -50%);
  -ms-transform: translate(-50%, -50%);
  display: flex;
  justify-content: center;
  align-items: center;
}
.ctn1 .turn .back .yuan {
  width: 54px;
  height: 54px;
  border-radius: 50%;
  background: var(--blue);
  display: flex;
  justify-content: center;
  align-items: center;
  transition: all 0.5s;
  -webkit-transition: all 0.5s;
  -moz-transition: all 0.5s;
  -ms-transition: all 0.5s;
}
.ctn1 .turn .back .yuan:hover {
  background: var(--color);
}
.ctn2 {
  padding: 90px 0;
  overflow: hidden;
}
.ctn2 .ctn-list {
  margin-top: 50px;
}
.ctn2 .ctn-list .swiper-slide {
  border-radius: 20px;
  overflow: hidden;
}
.ctn2 .ctn-list .swiper-slide:nth-child(n+4){
    display: none;
}
.ctn2 .ctn-list .swiper-slide .tu {
  overflow: hidden;
}
.ctn2 .ctn-list .swiper-slide .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 .swiper-slide .text {
  padding: 30px 40px 34px;
  background: rgba(238, 241, 250, 0.6);
}
.ctn2 .ctn-list .swiper-slide .text h2 {
  color: #444;
  transition: all 0.5s;
  -webkit-transition: all 0.5s;
  -moz-transition: all 0.5s;
  -ms-transition: all 0.5s;
  -webkit-line-clamp: 2;
  display: -webkit-box;
  -webkit-box-orient: vertical;
  text-overflow: ellipsis;
  overflow: hidden;
  line-height: 1.5;
  height: 3em;
}
.ctn2 .ctn-list .swiper-slide .text p {
  color: #999;
  -webkit-line-clamp: 2;
  display: -webkit-box;
  -webkit-box-orient: vertical;
  text-overflow: ellipsis;
  overflow: hidden;
  line-height: 1.5;
  height: 3em;
  margin: 10px 0 14px;
}
.ctn2 .ctn-list .swiper-slide .text h3 {
  color: #999;
}
.ctn2 .ctn-list .swiper-slide:hover .tu img {
  transform: scale(1.05);
  -webkit-transform: scale(1.05);
  -moz-transform: scale(1.05);
  -ms-transform: scale(1.05);
}
.ctn2 .ctn-list .swiper-slide:hover .text h2 {
  color: var(--color);
}
@media screen and (max-width: 1680px) {
  .ctn1 {
    padding-top: 5vw;
  }
  .ctn1 .text {
    margin-top: 40px;
  }
  .ctn1 .turn {
    padding: 5vw 0 6vw;
  }
  .ctn2 {
    padding: 4.5vw 0;
  }
  .ctn2 .ctn-list {
    margin-top: 2.5vw;
  }
  .ctn2 .ctn-list .swiper-slide .text {
    padding: 24px 30px 28px;
  }
}
@media screen and (max-width: 1200px) {
  .ctn1 .text {
    margin-top: 30px;
  }
}
@media screen and (max-width: 768px) {
  .ctn1 {
    padding-top: 40px;
  }
  .ctn1 .text {
    margin-top: 20px;
  }
  .ctn1 .text p {
    line-height: 1.6;
    margin-top: 10px;
  }
  .ctn1 .text img {
    border-radius: 10px;
  }
  .ctn1 .turn {
    padding: 30px 0 20px;
    display: block;
  }
  .ctn1 .turn .t-box {
    width: 100%;
  }
  .ctn1 .turn .t-box.next {
    margin-top: 14px;
  }
  .ctn1 .turn .back {
    width: 60px;
    height: 60px;
    position: relative;
    left: 0;
    top: 0;
    transform: translate(0, 0);
    -webkit-transform: translate(0, 0);
    -moz-transform: translate(0, 0);
    -ms-transform: translate(0, 0);
    margin: 20px auto 0;
  }
  .ctn1 .turn .back .yuan {
    width: 44px;
    height: 44px;
  }
  .ctn2 {
    padding: 30px 0 40px;
  }
  .ctn2 .ctn-list {
    margin-top: 20px;
  }
  .ctn2 .ctn-list .swiper-slide {
    border-radius: 10px;
  }
  .ctn2 .ctn-list .swiper-slide .text {
    padding: 14px 14px 40px;
  }
  .ctn2 .ctn-list .swiper-slide .text p {
    margin: 8px 0 10px;
  }
  .ctn2 .ctn-list .swiper-pagination {
    bottom: 14px;
  }
  .ctn2 .ctn-list .swiper-pagination .swiper-pagination-bullet {
    width: 8px;
    height: 8px;
    margin: 0 3px;
    background: var(--blue);
    opacity: 0.3;
  }
  .ctn2 .ctn-list .swiper-pagination .swiper-pagination-bullet-active {
    opacity: 1;
  }
}