.header {
  position: absolute;
  width: 100%;
  z-index: 1;
}

.main {
  background: linear-gradient(135deg, #fcfdff 0%, #f4f7ff 100%);
  position: relative;
  z-index: 0;
}

.advertising {
  width: 100%;
  height: 301px;
  background: #f0f3f9 url("../images/advertising_bg.png") no-repeat center;
  background-size: 1920px 100%;
  padding-top: 80px;
  display: flex;
  flex-direction: column;
  align-items: center;
}

.advertising-title {
  font-family:
    PingFangSC,
    PingFang SC;
  font-weight: 500;
  font-size: 36px;
  color: #000000;
  margin-top: 40px;
  margin-bottom: 16px;
}

.advertising-synopsis {
  font-family:
    PingFangSC,
    PingFang SC;
  font-weight: 400;
  font-size: 18px;
  color: #7b8297;
  line-height: 36px;
}

.card-title {
  font-family:
    PingFangSC,
    PingFang SC;
  font-weight: 600;
  font-size: 32px;
  color: #000000;
  line-height: 45px;
  position: relative;
}

.card-title::after {
  content: "";
  position: absolute;
  bottom: -18px;
  left: 0px;
  width: 108px;
  height: 5px;
  background: #0d7bff;
}

.card-title::before {
  content: "";
  position: absolute;
  bottom: -18px;
  right: 0px;
  width: 13px;
  height: 5px;
  background: #0d7bff;
}

.splendid-moment {
  width: 100%;
  height: 667px;
  background: linear-gradient(180deg, #ffffff 0%, #f4f7ff 100%);
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: 78px 0 0 0;
  box-sizing: border-box;
}

.splendid-moment-content {
  margin-top: 109px;
  width: 1440px;
  display: flex;
  justify-content: space-between;
}

.splendid-moment-item {
  display: flex;
  flex-direction: column;
  align-items: center;
}

.splendid-moment-item-img {
  width: 206px;
  height: 206px;
}

.splendid-moment-item-title {
  font-family:
    PingFangSC,
    PingFang SC;
  font-weight: 500;
  font-size: 20px;
  color: #232324;
  line-height: 28px;
  margin-top: 32px;
  margin-bottom: 24px;
}

.splendid-moment-item-tag {
  width: 160px;
  height: 52px;
  background: linear-gradient(134deg, #fafcff 0%, #f6f8fc 100%);
  box-shadow: 0px 6px 12px 0px rgba(20, 29, 39, 0.08);
  border-radius: 8px;
  border: 3px solid;
  border-image: linear-gradient(135deg, rgba(255, 255, 255, 1), rgba(234, 240, 255, 1)) 3 3;
  backdrop-filter: blur(4px);
  line-height: 52px;
  text-align: center;
  font-family:
    PingFangSC,
    PingFang SC;
  font-weight: 400;
  font-size: 18px;
  color: #36383f;
}

/* 里程碑项目样式 */
.course {
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: 114px 0 0 0;
}

.timeline {
  width: 1440px;
  margin-top: 108px;
  height: 2993px;
  position: relative;
  padding: 93px 0 0 0;
  box-sizing: border-box;
  display: flex;
  flex-direction: column;
  grid-row-gap: 7px;
}

.timeline::after {
  content: "";
  width: 2px;
  height: 100%;
  background: #d4d8df;
  position: absolute;
  top: 0;
  left: 50%;
  margin-left: -1px;
}

.origin {
  width: 22px;
  height: 22px;
  background: rgba(14, 122, 255, 0.5);
  border-radius: 50%;
  position: absolute;
  left: 50%;
  margin-left: -11px;
  z-index: 1;
  top: -11px;
}

.origin::after {
  content: "";
  width: 12px;
  height: 12px;
  background: #0e7aff;
  position: absolute;
  top: 50%;
  margin-top: -6px;
  left: 50%;
  margin-left: -6px;
  border-radius: 50%;
}

.timeline-item {
  width: 682px;
  padding: 32px 0;
  background: #f0f1ff;
  display: flex;
  flex-direction: column;
  justify-content: center;
  box-sizing: border-box;
  border-radius: 10px;
}

.left {
  text-align: right;
  padding-right: 41px;
  position: relative;
}

.left::after {
  content: "";
  width: 0;
  height: 0;
  border-left: 10px solid transparent;
  /* 左边框 */
  border-right: 10px solid transparent;
  /* 右边框 */
  border-bottom: 18px solid #f0f1ff;
  /* 下边框，颜色为蓝色，形成三角形 */
  position: absolute;
  right: -20px;
  top: 50%;
  margin-top: -9px;
  transform: rotate(90deg);
}

.sign {
  width: 16px;
  height: 16px;
  background: rgba(14, 122, 255, 0.5);
  border-radius: 50%;
  position: absolute;
  z-index: 1;
}

.sign::after {
  content: "";
  width: 8px;
  height: 8px;
  background: #0e7aff;
  position: absolute;
  top: 50%;
  margin-top: -4px;
  left: 50%;
  margin-left: -4px;
  border-radius: 50%;
}

.left .sign {
  right: -46px;
}

.timeline-item-title {
  font-family:
    PingFangSC,
    PingFang SC;
  font-weight: 500;
  font-size: 24px;
  color: #000000;
  line-height: 33px;
  position: relative;
  margin-bottom: 29px;
}

.left .timeline-item-title {
  padding-right: 47px;
}

.left .timeline-item-title::before {
  width: 60px;
  height: 1px;
  background: #c5c6cf;
  content: "";
  position: absolute;
  bottom: -16px;
  right: 0;
}

.time {
  font-family:
    PingFangSC,
    PingFang SC;
  font-weight: 500;
  font-size: 24px;
  color: #000000;
  line-height: 33px;
}

.left .time {
  position: absolute;
  right: -124px;
}

.timeline-item-info {
  font-family:
    PingFangSC,
    PingFang SC;
  font-weight: 400;
  font-size: 18px;
  color: #36383f;
  line-height: 34px;
}

.right {
  align-self: flex-end;
  position: relative;
  padding-left: 29px;
}

.right .timeline-item-title::before {
  width: 60px;
  height: 1px;
  background: #c5c6cf;
  content: "";
  position: absolute;
  bottom: -16px;
  left: 0;
}

.right .time {
  position: absolute;
  left: -124px;
}

.right .sign {
  left: -46px;
}

.right::after {
  content: "";
  width: 0;
  height: 0;
  border-left: 10px solid transparent;
  /* 左边框 */
  border-right: 10px solid transparent;
  /* 右边框 */
  border-bottom: 18px solid #f0f1ff;
  /* 下边框，颜色为蓝色，形成三角形 */
  position: absolute;
  left: -20px;
  top: 50%;
  margin-top: -9px;
  transform: rotate(-90deg);
}

.finish {
  width: 22px;
  height: 22px;
  background: rgba(109, 116, 125, 0.5);
  border-radius: 50%;
  position: absolute;
  left: 50%;
  margin-left: -11px;
  z-index: 1;
  bottom: 41px;
}

.finish::after {
  content: "";
  width: 12px;
  height: 12px;
  background: #6d747d;
  position: absolute;
  top: 50%;
  margin-top: -6px;
  left: 50%;
  margin-left: -6px;
  border-radius: 50%;
}

.project {
  padding: 79px 0 139px 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  width: 100%;
  box-sizing: border-box;
  position: relative;
}

.project-view {
  width: 1439px;
  height: 813px;
  background: linear-gradient(134deg, #fafcff 0%, #f6f8fc 100%);
  box-shadow: 0px 6px 12px 0px rgba(20, 29, 39, 0.08);
  border-radius: 8px;
  border: 3px solid;
  border-image: linear-gradient(135deg, rgba(255, 255, 255, 1), rgba(234, 240, 255, 1)) 3 3;
  backdrop-filter: blur(4px);
  margin-top: 87px;
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 1;
  position: relative;
}

.project-view-img {
  width: 1399px;
  height: 773px;
}

.project-tag {
  margin-top: 40px;
  display: flex;
  justify-content: center;
  grid-column-gap: 12px;
}

.project-tag-item {
  width: 240px;
  height: 144px;
  background: #e2ebf7;
  border-radius: 2px;
  display: flex;
  align-items: center;
  justify-content: center;
  box-sizing: border-box;
}
.project-tag-item img {
  width: 224px;
  height: 124px;
}
.active-tag {
  border: 2px solid #0e7aff;
}
.bg-style-icon1 {
  position: absolute;
  top: 2341px;
  right: 0;
  z-index: -1;
}

.bg-style-icon2 {
  position: absolute;
  bottom: 1882px;
  left: 0px;
  z-index: -1;
}

.bg-style-icon3 {
  position: absolute;
  bottom: 260px;
  left: 20px;
  z-index: 0;
}

@media screen and (max-width: 1300px) {
  .pushpin {
    display: none;
  }
  .main {
    width: 100%;
    overflow: hidden;
  }
  .advertising {
    height: 180px;
    padding-top: 61px;
  }
  .advertising-title {
    font-size: 24px;
    margin-top: 20px;
    margin-bottom: 9px;
  }
  .advertising-synopsis {
    font-size: 12px;
    line-height: 24px;
  }

  .splendid-moment {
    padding: 40px 16px;
    height: max-content;
  }
  .splendid-moment-content {
    /* flex-direction: column; */
    width: 100%;
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    grid-row-gap: 20px;
  }
  .card-title {
    font-size: 20px;
    line-height: 24px;
  }
  .card-title::after {
    width: 88%;
    height: 2px;
    bottom: -8px;
  }
  .card-title::before {
    width: 8%;
    height: 2px;
    bottom: -8px;
  }
  .splendid-moment-content {
    margin-top: 40px;
  }
  .splendid-moment-item {
  }
  .splendid-moment-item-img {
    width: 103px;
    height: 103px;
  }
  .splendid-moment-item-title {
    font-size: 14px;
    margin-top: 16px;
    margin-bottom: 12px;
    line-height: 18px;
  }
  .splendid-moment-item-tag {
    font-size: 14px;
    line-height: 32px;
    height: 32px;
    width: 100px;
  }
  /* 公益 */
  .course {
    padding: 40px 16px 0 16px;
  }
  .timeline {
    width: 100%;
    height: max-content;
    margin-top: 40px;
    padding: 40px 0 80px 48px;
    align-items: flex-start;
    grid-row-gap: 40px;
  }
  .timeline::after {
    left: 10px;
    height: 99%;
  }
  .origin {
    left: 10px;
  }
  .timeline-item {
    width: calc(100vw - 90px);
    padding: 15px 10px;
  }
  .timeline-item-title {
    font-size: 14px;
    margin-bottom: 10px;
    line-height: 20px;
    white-space: nowrap;
    text-overflow: ellipsis;
    overflow: hidden;
  }
  .left {
    padding-right: 15px;
    text-align: left;
  }
  .left .timeline-item-title {
    padding-right: 15px;
  }
  .left .timeline-item-title::before {
    bottom: -8px;
  }
  .left .time {
    left: 0px;
    top: -20px;
    right: auto;
    font-size: 18px;
    line-height: 18px;
  }
  .left .sign {
    left: -46px;
  }
  .left::after {
    content: "";
    width: 0;
    height: 0;
    border-left: 10px solid transparent;
    /* 左边框 */
    border-right: 10px solid transparent;
    /* 右边框 */
    border-bottom: 18px solid #f0f1ff;
    /* 下边框，颜色为蓝色，形成三角形 */
    position: absolute;
    left: -20px;
    top: 50%;
    margin-top: -9px;
    transform: rotate(-90deg);
  }
  .timeline-item-info {
    font-size: 12px;
    line-height: 14px;
    display: inline;
  }
  .right {
    align-self: auto;
  }
  .right .time {
    left: 0px;
    top: -20px;
    right: auto;
    font-size: 18px;
    line-height: 18px;
  }
  .finish {
    left: 10px;
  }
  .project {
    padding: 40px 16px;
    background: linear-gradient(135deg, #fcfdff 0%, #f4f7ff 100%);
  }
  .project-view {
    width: 100%;
    height: max-content;
    margin-top: 20px;
  }
  .project-view-img {
    width: 100%;
    height: 200px;
  }
  .bg-style-icon3 {
    width: 20vw;
  }
  .project-tag {
    width: 100%;
    overflow: hidden;
    margin-top: 20px;
    display: grid;
    grid-template-columns: repeat(4, 1fr);
  }
  .project-tag-item {
    width: 100%;
    height: max-content;
  }
  .project-tag-item img {
    width: 100%;
    height: auto;
  }
}