html,
body {
  perspective: 1000px;
  position: relative;
  height: 100%;
  overflow: hidden;
}

.swiper-container {
  width: 100%;
  height: 100%;
}

.swiper-slide {
  overflow: hidden;
  transform-origin: 0 0;
}

.swiper-container-vertical > .swiper-pagination-bullets {
  z-index: 99;
  right: 1%;
}

.swiper-pagination-bullet {
  width: 14px;
  height: 14px;
  margin: 0 0 2vw;
  background: url(../images/page-icon.png) no-repeat center center;
  opacity: 1;
}

.swiper-pagination-bullet-active {
  background: url(../images/page-icona.png) no-repeat center center;
}

.wrap {
  display: flex;
  position: relative;
  z-index: 6;
  width: 100%;
  height: 100%;
  padding: 5vw 0 0;
}

/* 第1部分 */

.part1 {
  position: relative;
  background: url(../images/video-bg.jpg) no-repeat center 0 / cover;
}

.video-layer {
  position: absolute;
  z-index: 10;
  left: 0;
  bottom: 20vw;
  width: 100%;
  color: #fff;
  text-align: center;
}
.video-layer .big {
  font-size: 3vw;
  line-height: 3.6vw;
}
.video-layer .small {
  padding-top: 1.6vw;
  font-size: 1.5vw;
  line-height: 1.6vw;
}
.video-layer .small span {
  padding: 0 1vw;
  font-size: 1.8vw;
}

.part1.swiper-slide-active .video-layer {
  bottom: 1vw;
  transition: 1s 3s;
}

video{
    position: absolute;
    left: 0;
    bottom: 0;
}

/* 第2部分 */

.part2 {
  position: relative;
  background: url(../images/part2-bg.jpg) no-repeat center 0 / cover;
}

.part2 .wrap {
  align-items: center;
}

.part2-main {
  width: 62.4vw;
  margin: 0 auto;
}

.part2-box {
  display: flex;
  justify-content: space-between;
}

.part2-left {
  width: 30vw;
}

.part2-name {
  padding: 0 0 2.4vw;
}

.part2-name .ch {
  padding: 0 0 0.5vw;
  font-size: 1.8vw;
  line-height: 2vw;
  color: rgb(152, 20, 16);
}

.part2-name .en {
  font-size: 1vw;
  line-height: 1.4vw;
  color: #999;
  text-transform: uppercase;
}

.part2-more a {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 2.4vw;
  height: 2.4vw;
  background: rgb(152, 20, 16);
  border-radius: 50%;
  transition: 0.3s;
}
.part2-more a img {
  width: 1vw;
}

.part2-more a:hover {
  transform: rotate(360deg);
}

.part2-right {
  width: 30.8vw;
  height: 4.8vw;
  overflow: hidden;
  font-size: 0.9vw;
  line-height: 1.2vw;
  color: #666;
}

.part2-img {
  padding: 4vw 0 0;
}
.part2-img img {
  width: 100%;
}

/* 第3部分 */

.part3 {
  position: relative;
  background: url(../images/part3-bg.jpg) no-repeat center 0 / cover;
}

.part3 .wrap {
  align-items: center;
}

.part3-main {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  width: 76vw;
  margin: 0 auto;
}

.part3-slide {
  width: 14vw;
  padding: 1vw 0 0;
}

.part3-ad {
  padding: 2.4vw 0 3.6vw;
}
.part3-big {
  padding: 0 0 0.5vw;
  font-size: 1.8vw;
  line-height: 2vw;
  color: rgb(152, 20, 16);
}
.part3-small {
  font-size: 1.2vw;
  line-height: 1.5vw;
  color: #000;
}
.part3-small span {
  padding: 0 0.4vw;
}

.part3-more {
  padding: 0 0 3vw;
}
.part3-more a {
  display: block;
  font-size: 14px;
  line-height: 20px;
  color: #333;
}
.part3-more a:hover {
  color: rgb(152, 20, 16);
}

.part3-arrow {
  display: flex;
  justify-content: space-between;
  width: 5.4vw;
}
.part3-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 2.4vw;
  height: 2.4vw;
  background: rgb(152, 20, 16);
  border-radius: 50%;
  cursor: pointer;
}
.part3-btn img {
  width: 1vw;
}

.part3-box {
  width: 59.4vw;
}
.part3-box .swiper-slide {
  padding: 1vw 1.4vw;
}
.part3-box a {
  position: relative;
  display: block;
  padding: 0 2.4vw;
  background: #fff;
  transition: 0.3s;
}
.part3-li-num {
  position: absolute;
  z-index: 10;
  right: 1vw;
  bottom: 2vw;
  font-size: 1.5vw;
  line-height: 1;
  color: #999;
  transition: 0.3s;
}
.part3-li-num::before {
  content: "";
  position: absolute;
  z-index: 5;
  left: 50%;
  top: -13vw;
  width: 1px;
  height: 12vw;
  background: #e7e7e7;
}

.part3-li-name {
  padding: 2.5vw 0 1vw;
}
.part3-li-name .ch {
  padding: 0 0 0.6vw;
  font-size: 1.2vw;
  line-height: 1.4vw;
  color: #000;
}
.part3-li-name .en {
  height: 32px;
  font-size: 12px;
  line-height: 16px;
  color: #999;
  text-transform: uppercase;
  overflow: hidden;
}
.part3-li-p {
  height: 60px;
  overflow: hidden;
  font-size: 14px;
  line-height: 20px;
  color: #999;
}
.part3-li-img {
  margin: 1vw -2.4vw 0;
}
.part3-li-img img {
  width: 100%;
}

.part3-box a:hover {
  transform: translate3d(0, -0.9vw, 0);
}
.part3-box a:hover .part3-li-num {
  transform: translate3d(0, 0.5vw, 0);
}

/* 第4部分 */

.part4 {
  position: relative;
  background: url(../images/part4-bg.jpg) no-repeat center 0 / cover;
}

.part4 .wrap {
  align-items: center;
}
.part4-main {
  position: relative;
  width: 100%;
  height: 100%;
}

.part4-slide {
  position: absolute;
  z-index: 50;
  left: 16vw;
  top: 10vw;
}

.part4-50 img {
  width: 8vw;
}
.part4-name {
  padding: 2vw 0;
}
.part4-name .ch {
  padding: 0 0 0.6vw;
  font-size: 1.2vw;
  line-height: 1.4vw;
  color: #000;
}

.part4-name .en {
  font-size: 12px;
  line-height: 16px;
  color: #999;
  text-transform: uppercase;
  overflow: hidden;
}
.part4-more {
  padding: 0 0 2vw;
}

.part4-more a {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 2.4vw;
  height: 2.4vw;
  background: rgb(152, 20, 16);
  border-radius: 50%;
  transition: 0.3s;
}

.part4-more a:hover {
  transform: rotate(360deg);
}
.part4-box {
  perspective: 1000px;
  position: absolute;
  z-index: 1;
  right: 0;
  top: 50%;
  width: 76.3vw;
  height: 37.6vw;
  margin-top: -18.8vw;
}
.part4-box ul {
  display: flex;
  flex-wrap: wrap;
}
.part4-box li {
  position: relative;
  width: 18vw;
  padding: 0.4vw;
}
.part4-box li:nth-child(1) {
  margin-left: 12.9vw;
}

.part4-box li:nth-child(8) {
  margin-left: 4.3vw;
}

.part4-box li:nth-child(12) {
  margin-left: 8.6vw;
}
.part4-box li:nth-child(3)::before,
.part4-box li:nth-child(7)::before,
.part4-box li:nth-child(14)::before {
  content: "";
  position: absolute;
  z-index: 1;
  left: 18.4vw;
  top: 0.4vw;
  width: 17.2vw;
  height: 8.6vw;
  background: url(../images/part4-li-bg.png) no-repeat center center/cover;
}

.part4-box li i {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 17.2vw;
  height: 8.6vw;
  background: url(../images/part4-li-bg.png) no-repeat center center/cover;
}

.part4-box i img {
  position: relative;
  z-index: 10;
  max-width: 100%;
}
.part4-banner .swiper-slide i {
  overflow: hidden;
}
.part4-banner .swiper-slide img {
  transform: translate3d(150%, 0, 0);
  transform-origin: 0 center;
  transition: 0.8s 0.8s;
}

.part4-banner .swiper-slide-active img {
  transform: translate3d(0, 0, 0);
}

.public {
  height: 22.4vw;
}