@keyframes dow_arr1 {
  0% {
    opacity: 0;
  }
  24% {
    opacity: 0;
  }
  25% {
    opacity: 1;
  }
  100% {
    opacity: 1;
  }
}
@keyframes dow_arr2 {
  0% {
    opacity: 0;
  }
  49% {
    opacity: 0;
  }
  50% {
    opacity: 1;
  }
  100% {
    opacity: 1;
  }
}
@keyframes large-s {
  0% {
    transform: scale(1);
  }
  100% {
    transform: scale(1.05);
  }
}
.banner {
  width: 100%;
  overflow: hidden;
  position: relative;
}
.banner .txt {
  width: 100%;
  position: absolute;
  top: 40%;
  left: 7.5%;
  transform: translateY(-50%);
}
.banner .txt p {
  color: #fff;
}
.banner .txt span {
  color: #fff;
  display: inline-block;
}
.subnav {
  width: 100%;
  background-color: #f9f9f8;
}
.subnav ul {
  width: 100%;
  background-color: #fff;
  display: flex;
  justify-content: center;
  align-items: center;
  box-shadow: 0px 0px 8px #ccc;
}
.subnav ul li {
  padding: 0 1.5rem;
  line-height: 100px;
  color: #333;
  border-bottom: 2px solid transparent;
}
.subnav ul li.on {
  color: var(--primary-color);
  border-bottom: 2px solid var(--primary-color);
}
.ctn_1 {
  background-color: #f3f2f0;
  width: 100%;
  overflow: hidden;
  padding: 3rem 0 4rem;
}
.ctn_1 .title {
  color: var(--primary-color);
  text-align: center;
}
.ctn_1 .sub_tit {
  text-align: center;
  width: 70%;
  display: block;
  margin: 1.5rem auto 0;
  color: #333;
  line-height: 1.8;
}
.ctn_1 .sub_tit span {
  color: var(--primary-color);
}
.ctn_1 h2 {
  display: block;
  text-align: center;
  color: var(--primary-color);
  margin-top: 2rem;
}
.ctn_1 .number {
  display: flex;
  justify-content: center;
  margin-top: 2.5rem;
}
.ctn_1 .number li {
  width: auto;
  text-align: center;
  padding: 0 4%;
  position: relative;
}
.ctn_1 .number li p em {
  font-size: 90px;
  font-family: 'Impact';
  line-height: 1;
  color: var(--primary-color);
  vertical-align: middle;
}
.ctn_1 .number li p span {
  font-size: 50px;
  color: var(--primary-color);
  vertical-align: middle;
  margin-left: 8px;
  padding-bottom: 5px;
}
.ctn_1 .number li i {
  display: inline-block;
  text-align: center;
  color: #333;
  font-size: 16px;
}
.ctn_1 .number li:nth-child(1)::before {
  content: ' ';
  display: block;
  width: 1px;
  height: 80%;
  position: absolute;
  top: 50%;
  right: 0;
  transform: translateY(-50%);
  background-color: #ccc;
}
.ctn_1 .pic {
  display: flex;
  justify-content: space-between;
  margin-top: 3rem;
}
.ctn_1 .pic li {
  width: 32%;
  position: relative;
}
.ctn_1 .pic li .bg1 {
  position: absolute;
  bottom: 0;
  left: 0;
  width: 100%;
  z-index: 2;
}
.ctn_1 .pic li .img {
  position: relative;
  padding-top: 60%;
  overflow: hidden;
  z-index: 1;
}
.ctn_1 .pic li .img img {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  transition: all 0.3s;
}
.ctn_1 .pic li .txt {
  position: absolute;
  bottom: 20px;
  left: 5%;
  width: 90%;
  z-index: 3;
}
.ctn_1 .pic li .txt p {
  -webkit-line-clamp: 1;
  display: -webkit-box;
  -webkit-box-orient: vertical;
  text-overflow: ellipsis;
  overflow: hidden;
  line-height: 1.5;
  height: 1.5em;
  color: #fff;
}
.ctn_1 .pic li:hover .img img {
  transform: translate(-50%, -50%) scale(1.05);
}
.ctn_2 {
  width: 100%;
  overflow: hidden;
  padding: 3rem 0 4rem;
  background-position: center center;
  background-repeat: no-repeat;
}
.ctn_2 .title {
  color: #fff;
  text-align: center;
}
.ctn_2 ul {
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  margin-top: 2rem;
}
.ctn_2 ul li {
  width: 22%;
  border: 1px solid #a8aaad;
  background-color: rgba(255, 255, 255, 0.1);
  padding: 3% 0 4%;
  text-align: center;
  transition: 0.3s;
}
.ctn_2 ul li .ic {
  width: 74px;
  height: 74px;
  background-color: #fff;
  display: flex;
  justify-content: center;
  align-items: center;
  border-radius: 100%;
  margin: 0 auto;
}
.ctn_2 ul li .ic i {
  display: inline-block;
  width: 40px;
  height: 40px;
  background-size: 100%;
  background-repeat: no-repeat;
  background-position: 0 100%;
}
.ctn_2 ul li p {
  color: #fff;
  margin-top: 1.5rem;
}
.ctn_2 ul li:hover {
  background-color: #fff;
  border: 1px solid #fff;
}
.ctn_2 ul li:hover .ic {
  background-color: var(--primary-color);
}
.ctn_2 ul li:hover .ic i {
  background-position: 0 0;
}
.ctn_2 ul li:hover p {
  color: var(--primary-color);
}
.ctn_3 {
  width: 100%;
  overflow: hidden;
  padding: 4rem 0 4rem;
}
.ctn_3 .title {
  color: var(--primary-color);
  text-align: center;
}
.ctn_3 ul {
  display: flex;
  justify-content: flex-start;
  flex-wrap: wrap;
  border-right: 1px solid #ccc;
  border-bottom: 1px solid #ccc;
  overflow: hidden;
  margin-top: 3rem;
}
.ctn_3 ul li {
  width: 25%;
  border-top: 1px solid #ccc;
  border-left: 1px solid #ccc;
  background-color: #fff;
  display: flex;
  justify-content: center;
  align-items: flex-start;
  min-height: 320px;
  position: relative;
  z-index: 1;
  transition: 0.3s;
}
.ctn_3 ul li div {
  margin-top: 15%;
}
.ctn_3 ul li div i {
  display: block;
  width: 60px;
  height: 60px;
  background-size: 100%;
  background-repeat: no-repeat;
  margin: 0 auto;
}
.ctn_3 ul li div p {
  color: #333;
  margin-top: 0.5rem;
  display: block;
  font-weight: bold;
  text-align: center;
}
.ctn_3 ul li div span {
  color: #666;
  margin-top: 0.5rem;
  display: block;
  text-align: center;
}
.ctn_3 ul li:hover {
  box-shadow: 0px 0px 30px #ccc;
  z-index: 2;
}
.ctn_3 ul li:hover div i {
  background-position: 0 100%;
}
.ctn_3 ul li:hover div p {
  color: var(--primary-color);
}
.ctn_4 {
  width: 100%;
  overflow: hidden;
  padding: 4rem 0 4rem;
  background-color: #f3f2f0;
}
.ctn_4 .title {
  color: var(--primary-color);
  text-align: center;
}
.ctn_4 .sw_case {
  padding-bottom: 50px;
  margin-top: 2rem;
}
.ctn_4 .sw_case .swiper-slide {
  overflow: hidden;
}
.ctn_4 .sw_case .swiper-slide > img {
  transition: all 0.3s;
}
.ctn_4 .sw_case .swiper-slide .bg {
  position: absolute;
  bottom: 0;
  left: 0;
  width: 100%;
}
.ctn_4 .sw_case .swiper-slide .bg .bg2 {
  display: none;
  position: absolute;
  bottom: 0;
  left: 0;
}
.ctn_4 .sw_case .swiper-slide .txt {
  position: absolute;
  bottom: 8px;
  left: 0;
  width: 100%;
}
.ctn_4 .sw_case .swiper-slide .txt p {
  display: inline-block;
  text-align: center;
  color: #fff;
  margin-bottom: 10px;
  width: 100%;
}
.ctn_4 .sw_case .swiper-slide .txt span {
  color: #fff;
  -webkit-line-clamp: 2;
  display: -webkit-box;
  -webkit-box-orient: vertical;
  text-overflow: ellipsis;
  overflow: hidden;
  line-height: 1.5;
  height: 3em;
  width: 80%;
  display: none;
  margin: 0 auto;
  text-align: left;
}
.ctn_4 .sw_case .swiper-slide:hover > img {
  transform: scale(1.05);
}
.ctn_4 .sw_case .swiper-slide:hover .bg .bg1 {
  display: none;
}
.ctn_4 .sw_case .swiper-slide:hover .bg .bg2 {
  display: block;
}
.ctn_4 .sw_case .swiper-slide:hover .txt p {
  display: none;
}
.ctn_4 .sw_case .swiper-slide:hover .txt span {
  display: -webkit-box;
}
.ctn_4 .sw_case .swiper-pagination {
  top: auto;
  bottom: 0;
  height: 6px;
}
.ctn_4 .sw_case .swiper-pagination-progressbar .swiper-pagination-progressbar-fill {
  background: var(--primary-color);
}
@media screen and (max-width: 1366px) {
  .ctn_1 .number li p em {
    font-size: 70px;
  }
  .ctn_2 ul li .ic {
    width: 65px;
    height: 65px;
  }
  .ctn_2 ul li .ic i {
    width: 35px;
    height: 35px;
  }
  .ctn_3 ul li {
    min-height: 300px;
    padding: 0 2%;
  }
}
@media screen and (max-width: 1280px) {
  .subnav ul li {
    line-height: 50px;
  }
}
@media screen and (max-width: 998px) {
  .banner img {
    width: 180%;
    margin-left: -40%;
  }
  .banner .txt {
    top: 52%;
  }
  .ctn_1 .pic {
    flex-wrap: wrap;
  }
  .ctn_1 .pic li {
    width: 100%;
    margin-bottom: 15px;
  }
  .ctn_3 ul li {
    width: 50%;
  }
  .ctn_3 ul li div p {
    margin-top: 1rem;
    font-size: 14px;
  }
  .ctn_3 ul li div span {
    margin-top: 1.2rem;
    font-size: 12px;
  }
  .ctn_3 ul li div i {
    width: 50px;
    height: 50px;
  }
}
@media screen and (max-width: 768px) {
  .ctn_1 .sub_tit {
    width: 100%;
  }
  .ctn_1 .number li p em {
    font-size: 50px;
  }
  .ctn_2 ul li {
    width: 48%;
    margin-bottom: 4%;
    padding: 7% 0 6%;
  }
  .ctn_2 ul li p {
    font-size: 14px;
  }
  .ctn_3 ul li {
    min-height: auto;
  }
  .ctn_3 ul li > div {
    margin-bottom: 15%;
  }
  .subnav {
    overflow-x: scroll;
  }
  .subnav ul {
    padding: 0 20px;
    width: auto;
    display: block;
    text-align: center;
    white-space: nowrap;
    box-shadow: none;
  }
  .subnav ul li {
    width: 80px;
    display: inline-block;
    font-size: 12px;
    padding: 0 0.5rem;
  }
}