.main-center {
  width: calc(100% - 256px * 2);
  margin: 0 auto;
}
.page-banner {
  position: relative;
  display: flex;
  background-size: cover;
  background-repeat: no-repeat;
  overflow: hidden;
}
.page-banner .content {
  position: absolute;
  top: 0;
  left: 50%;
  display: flex;
  align-items: center;
  height: 100%;
  transform: translateX(-50%);
  z-index: 11;
}
.page-banner .swiper {
  width: 100%;
}
.page-banner .swiper-slide {
  height: 100vh;
}
.page-banner .swiper-slide img,
.page-banner .swiper-slide video {
  width: 100%;
  height: 100%;
  object-fit: cover;
}
.page-banner .txt {
  max-width: 750px;
}
.page-banner .txt * {
  color: #fff;
}
.page-banner .txt h6 {
  font-size: 40px;
  margin-bottom: 40px;
}
.page-banner .txt .des {
  margin-bottom: 50px;
}
.page-banner .txt .des,
.page-banner .txt .des * {
  font-size: 18px;
  text-align: justify;
}
.page-banner .txt .des p {
  margin-bottom: 10px;
}
.page-banner .txt .btn {
  display: flex;
  gap: 20px;
}
.page-banner .txt .more-btn {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  height: 48px;
  padding: 0 22px;
  border: 1px solid;
  border-radius: 10px;
}
.page-banner .txt .more-btn span {
  font-size: 16px;
}
.page-banner .txt .more-btn img {
  width: 12px;
}
.video-container {
  display: none;
  position: fixed;
  top: 50%;
  left: 50%;
  width: 100%;
  height: 100%;
  z-index: 100000;
  background-color: rgba(0, 0, 0, 0.6);
  transition: none;
  transform: translate(-50%, -50%);
}
.video-container .con {
  position: absolute;
  top: 50%;
  left: 50%;
  width: 90%;
  height: 90%;
  padding: 20px;
  border-radius: 20px;
  background-color: #fff;
  transform: translate(-50%, -50%);
}
.video-container .con video {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: scale-down;
}
section {
  padding: 50px 0;
}
.main-1 {
  background-image: url("../images/bg2.png");
  background-size: cover;
}
.main-1 .main-title {
  font-size: 46px;
  text-align: center;
  margin-bottom: 50px;
}
.main-1 .content {
  min-height: 600px;
}
.main-2 .content {
  width: calc(100% - 30px * 2);
  margin: 0 auto;
}
.main-2 .wrap {
  display: flex;
  align-items: center;
  gap: 120px;
  padding: 90px 200px;
  border-radius: 24px;
}
.main-2 .wrap:nth-of-type(odd) {
  background-color: #dbe4ea;
}
.main-2 .wrap:nth-of-type(even) {
  flex-direction: row-reverse;
}
.main-2 .wrap .txt {
  display: grid;
  justify-items: flex-start;
  gap: 20px;
}
.main-2 .wrap .txt span {
  display: inline-flex;
  align-items: center;
  padding: 6px 20px;
  border: 1px solid;
  border-radius: 30px;
}
.main-2 .wrap .txt span::before {
  content: "•";
  font-size: 20px;
}
.main-2 .wrap .txt h6 {
  font-size: 46px;
}
.main-2 .wrap .txt p {
  font-size: 24px;
}
.main-2 .wrap .txt .en {
  font-size: 24px;
}
.main-2 .wrap .img-auto {
  position: relative;
  width: 30vw;
  flex-shrink: 0;
  overflow: hidden;
}
.main-2 .wrap .img-auto::after {
  content: "";
  display: block;
  padding-top: calc(100% / 520 * 630);
}
.main-2 .wrap .img-auto > img {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
}
.main-3 .main-title {
  text-align: center;
  font-size: 46px;
  margin-bottom: 50px;
}
.main-3 .main-center {
  width: calc(100% - 160px * 2);
}
.main-3 .viewport {
  overflow-x: hidden;
}
.main-3 .content {
  display: grid;
  grid-template-rows: 290px 290px;
  /* 两行，高度各100px */
  grid-auto-flow: column;
  /* 按列填充，先填满第一列的两个，再第二列... */
  grid-auto-columns: calc((100% - 12px * 2) / 3);
  /* 每列宽度固定为130px */
  gap: 12px;
  /* 列间距和行间距统一为16px */
  width: fit-content;
  height: calc(290px * 2 + 12px);
}
.main-3 .item {
  padding: 50px 60px 0;
  height: 290px;
  border-radius: 30px;
}
.main-3 .item:nth-of-type(odd) {
  background-color: #f0f4f7;
}
.main-3 .item:nth-of-type(even) {
  background-color: #f9fbfc;
  margin-bottom: 0;
}
.main-3 .item h6 {
  position: relative;
  font-size: 28px;
  padding-bottom: 10px;
  margin-bottom: 30px;
}
.main-3 .item h6::before {
  content: "";
  position: absolute;
  bottom: 0;
  left: 0;
  width: 30px;
  height: 3px;
  border-radius: 10px;
  background-color: #445d8a;
}
.main-3 .item p {
  font-size: 18px;
}
.main-3 .more {
  position: relative;
  height: 2px;
  margin-top: 50px;
  background-color: #d8d8d8;
}
.main-3 .more .line {
  position: absolute;
  bottom: 0;
  left: 0;
  width: 30%;
  height: 100%;
  background-color: #2365af;
}
.main-3 .more .btn {
  position: absolute;
  top: 50%;
  left: 30%;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 90px !important;
  height: 34px;
  border-radius: 100px;
  border: 2px solid #2365af;
  color: #2365af;
  background-color: #fff;
  transform: translateY(-50%);
  z-index: 1;
  transition: none !important;
}
@media screen and (max-width: 1200px) {
  .main-center {
    width: calc(100% - 20px * 2) !important;
  }
  .page-banner .txt h6 {
    font-size: 20px;
  }
  .page-banner .txt .des,
  .page-banner .txt .des * {
    font-size: 14px;
  }
  .page-banner .txt .more-btn {
    height: 38px;
    padding: 0 10px;
  }
  .main-1 .main-title {
    font-size: 20px;
  }
  .main-1 .content {
    min-height: 100px;
  }
  .main-2 .wrap {
    flex-direction: column !important;
    gap: 20px;
    padding: 20px;
  }
  .main-2 .wrap .txt {
    gap: 10px;
  }
  .main-2 .wrap .txt span {
    padding: 3px 10px;
    font-size: 14px;
  }
  .main-2 .wrap .txt h6 {
    font-size: 20px;
  }
  .main-2 .wrap .txt p {
    font-size: 14px;
  }
  .main-2 .wrap .txt .en {
    font-size: 14px;
  }
  .main-2 .wrap .img-auto {
    width: 100%;
  }
  .main-3 .main-title {
    width: 100%;
    font-size: 20px;
    margin-bottom: 30px;
  }
  .main-3 .viewport {
    overflow-x: auto;
  }
  .main-3 .more {
    display: none;
  }
  .main-3 .content .item {
    padding: 30px;
    min-width: 280px;
  }
  .main-3 .content .item h6 {
    font-size: 20px;
    margin-bottom: 10px;
  }
  .main-3 .content .item p {
    font-size: 14px;
  }
}