.ctn1 {
  padding: 140px 0;
  overflow: hidden;
}
.ctn1 .tu {
  width: 80%;
  margin: 80px auto 0;
}
.ctn1 .tu img {
  width: 100%;
}
.ctn2 {
  overflow: hidden;
  position: relative;
}
.ctn2 .bg {
  position: relative;
  z-index: 2;
}
.ctn2 .bg .swiper-slide img {
  width: 100%;
}
.ctn2 .ctn-list {
  position: absolute;
  width: 100%;
  left: 0;
  bottom: 50px;
  z-index: 3;
}
.ctn2 .ctn-list ul {
  display: flex;
  justify-content: center;
}
.ctn2 .ctn-list ul li {
  width: 312px;
  height: 212px;
  border: 6px solid rgba(255, 255, 255, 0.5);
  cursor: pointer;
  overflow: hidden;
}
.ctn2 .ctn-list ul li img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}
.ctn2 .ctn-list ul li:not(:last-child) {
  margin-right: 40px;
}
.ctn2 .ctn-list ul li:hover img {
  transform: scale(1.05);
  -webkit-transform: scale(1.05);
  -moz-transform: scale(1.05);
  -ms-transform: scale(1.05);
}
.ctn2 .ctn-list ul li.active {
  border: 6px solid #fff;
}
.ctn3 {
  padding: 140px 0;
  overflow: hidden;
}
.ctn3 .ctn-list {
  margin-top: 10px;
}
.ctn3 .ctn-list ul {
  display: flex;
  flex-wrap: wrap;
}
.ctn3 .ctn-list ul li {
  margin-top: 30px;
  width: 23.4%;
  border: 1px solid #e9e9e9;
  padding: 40px 40px 50px;
}
.ctn3 .ctn-list ul li h2 {
  display: inline-block;
  line-height: 1;
  font-weight: 700;
  color: #0264af;
  opacity: 0.3;
  position: relative;
}
.ctn3 .ctn-list ul li h2:after {
  content: '';
  width: 100%;
  height: 100%;
  background: linear-gradient(to bottom, rgba(255, 255, 255, 0.3), #ffffff);
  position: absolute;
  left: 0;
  top: 0;
  z-index: 2;
}
.ctn3 .ctn-list ul li p {
  margin-top: 20px;
  line-height: 1.6;
}
.ctn3 .ctn-list ul li:not(:nth-child(4n)) {
  margin-right: 2.1333%;
}
.ctn3 .ctn-list ul li:hover {
  background: #0264af;
}
.ctn3 .ctn-list ul li:hover h2 {
  color: #fff;
}
.ctn3 .ctn-list ul li:hover h2:after {
  opacity: 0;
}
.ctn3 .ctn-list ul li:hover p {
  color: #fff;
}
.ctn4 {
  padding: 140px 0;
  overflow: hidden;
  background: #f7f9fb;
}
.ctn4 .ctn-list {
  margin-top: 40px;
  position: relative;
}
.ctn4 .ctn-list ul {
  display: flex;
  justify-content: center;
}
.ctn4 .ctn-list ul li {
  background: #fff;
  flex: 1;
  transition: all 0.5s;
  -webkit-transition: all 0.5s;
  -moz-transition: all 0.5s;
  -ms-transition: all 0.5s;
}
.ctn4 .ctn-list ul li .tu {
  height: 296px;
  overflow: hidden;
}
.ctn4 .ctn-list ul li .tu img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}
.ctn4 .ctn-list ul li .text {
  height: 296px;
  text-align: center;
  padding: 40px 40px 0;
  position: relative;
}
.ctn4 .ctn-list ul li .text:after {
  content: '';
  width: 4px;
  height: 0;
  background: var(--blue);
  position: absolute;
  left: 0;
  top: 44px;
  transition: all 0.5s;
  -webkit-transition: all 0.5s;
  -moz-transition: all 0.5s;
  -ms-transition: all 0.5s;
}
.ctn4 .ctn-list ul li .text h2 {
  font-weight: 700;
  color: #333;
  transition: all 0.5s;
  -webkit-transition: all 0.5s;
  -moz-transition: all 0.5s;
  -ms-transition: all 0.5s;
}
.ctn4 .ctn-list ul li .text .txt {
  margin-top: 10px;
  color: #333;
  position: relative;
}
.ctn4 .ctn-list ul li .text .txt .p1 {
  -webkit-line-clamp: 3;
  display: -webkit-box;
  -webkit-box-orient: vertical;
  text-overflow: ellipsis;
  overflow: hidden;
  line-height: 1.5;
  height: 4.5em;
  line-height: 1.8;
  height: 5.4em;
}
.ctn4 .ctn-list ul li .text .txt .p2 {
  opacity: 0;
  position: absolute;
  line-height: 1.8;
  left: 0;
  top: 0;
      height: 160px;
    overflow-y: auto;
}
.ctn4 .ctn-list ul li .text .txt .p2::-webkit-scrollbar {
  width: 5px;
}
.ctn4 .ctn-list ul li .text .txt .p2::-webkit-scrollbar-track {
  border-radius: 3px;
  background: rgba(0, 0, 0, 0.1);
}
.ctn4 .ctn-list ul li .text .txt .p2::-webkit-scrollbar-thumb {
  border-radius: 3px;
  background: #005698;
}
.ctn4 .ctn-list ul li:not(:last-child) {
  margin-right: 18px;
}
.ctn4 .ctn-list ul li:hover {
  flex: 2;
}
.ctn4 .ctn-list ul li:hover .text {
  text-align: left;
}
.ctn4 .ctn-list ul li:hover .text:after {
  height: 32px;
}
.ctn4 .ctn-list ul li:hover .text h2 {
  color: var(--blue);
}
.ctn4 .ctn-list ul li:hover .text .txt .p1 {
  opacity: 0;
}
.ctn4 .ctn-list ul li:hover .text .txt .p2 {
  opacity: 1;
  transition: all 0.3s ease 0.3s;
  -webkit-transition: all 0.3s ease 0.3s;
  -moz-transition: all 0.3s ease 0.3s;
  -ms-transition: all 0.3s ease 0.3s;
}
@media screen and (max-width: 1600px) {
  .ctn1 {
    padding: 7vw 0;
  }
  .ctn1 .tu {
    margin: 4vw auto 0;
  }
  .ctn2 .ctn-list ul li {
    width: 280px;
    height: 190px;
  }
  .ctn3 {
    padding: 7vw 0;
  }
  .ctn3 .ctn-list ul li {
    padding: 2vw 2vw 2.5vw;
  }
  .ctn4 {
    padding: 7vw 0;
  }
  .ctn4 .ctn-list ul li .tu {
    height: 276px;
  }
  .ctn4 .ctn-list ul li .text {
    height: 276px;
    padding: 2vw 2vw 0;
  }
  .ctn4 .ctn-list ul li .text:after {
    top: 2vw;
  }
}
@media screen and (max-width: 1440px) {
  .ctn2 .ctn-list ul li {
    width: 240px;
    height: 164px;
  }
}
@media screen and (max-width: 1024px) {
  .ctn4 .ctn-list ul li .tu {
    height: 220px;
  }
  .ctn4 .ctn-list ul li .text {
    height: 250px;
  }
  .ctn4 .ctn-list ul li .text:after {
    top: 2vw;
  }
  .ctn4 .ctn-list ul li .text .txt .p2{
      height: 140px;
  }
}
@media screen and (max-width: 768px) {
  .ctn1 {
    padding: 40px 0;
  }
  .ctn1 .tu {
    width: 100%;
    margin: 20px auto 0;
  }
  .ctn2 .ctn-list {
    bottom: 0;
    position: relative;
    margin-top: 10px;
  }
  .ctn2 .ctn-list ul li {
    width: 80px;
    height: 60px;
    border: 4px solid rgba(255, 255, 255, 0.5);
  }
  .ctn2 .ctn-list ul li.active {
    border: 4px solid var(--blue);
  }
  .ctn2 .ctn-list ul li:not(:last-child) {
    margin-right: 6px;
  }
  .ctn3 {
    padding: 40px 0;
  }
  .ctn3 .ctn-list ul li {
    width: 48.5%;
    margin-top: 14px;
    padding: 14px;
  }
  .ctn3 .ctn-list ul li p {
    margin-top: 14px;
  }
  .ctn3 .ctn-list ul li:not(:nth-child(4n)) {
    margin-right: 0;
  }
  .ctn3 .ctn-list ul li:not(:nth-child(even)) {
    margin-right: 3%;
  }
  .ctn4 {
    padding: 40px 0;
  }
  .ctn4 .ctn-list {
    margin-top: 10px;
  }
  .ctn4 .ctn-list ul {
    flex-wrap: wrap;
    justify-content: space-between;
  }
  .ctn4 .ctn-list ul li {
    width: 48.5%;
    flex: none!important;
    margin-right: 0!important;
    margin-top: 14px;
  }
  .ctn4 .ctn-list ul li .tu {
    height: 90px;
  }
  .ctn4 .ctn-list ul li .text {
    height: auto;
    padding: 20px;
    text-align: left;
  }
  .ctn4 .ctn-list ul li .text:after {
    width: 3px;
    height: 20px;
    top: 22px;
  }
  .ctn4 .ctn-list ul li .text h2 {
    color: var(--blue);
  }
  .ctn4 .ctn-list ul li .text .txt .p1 {
    opacity: 1!important;
    line-height: 1.6;
    height: 4.8em;
  }
  .ctn4 .ctn-list ul li .text .txt .p2 {
    opacity: 0!important;
  }
  .ctn4 .ctn-list ul li:not(:nth-child(even)) {
    margin-right: 3%!important;
  }
}