.activity-page {
  background: #1C3FD6;
  padding: 0 0 40px;
}

.activity-banner img {
  width: 100%;
  display: block;
}

.activity-content {
  max-width: 1200px;
  margin: -150px auto 0;
  z-index: 1;
  position: relative;
}
.content-section {
  background: #fff;
  border-radius: 10px;
  padding: 30px;
  margin-bottom: 50px;
  position: relative;
}
.content-section:last-of-type {
  margin-bottom: 0;
}
.content-section::before {
  content: '';
  position: absolute;
  top: 0px;
  left: 0;
  display: block;
  width: 1200px;
  height: 44px;
  background: url(https://cloudpnrcdn.oss-cn-shanghai.aliyuncs.com/dgwebsite/open-public/docs/images/doc_center/section-title-bg.png) no-repeat;
  background-size: contain;
}

.section-title {
  width: 170px;
  height: 56px;
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  margin:-45px auto 18px;
}
.section-title img {
  width: 100%;
  display: block;
}


.section-subtitle {
  font-size: 18px;
  color: #1D2129;
  letter-spacing: 0;
  text-align: center;
  line-height: 24px;
  font-weight: bold;
  text-align: center;
  margin: 32px auto 20px;
  position: relative;
  width: fit-content;
  z-index: 1;
}
.section-subtitle::after {
  content: '';
  position: absolute;
  bottom: -9px;
  left: -2px;
  display: block;
  width: 86px;
  height: 16px;
  background: url(https://cloudpnrcdn.oss-cn-shanghai.aliyuncs.com/dgwebsite/open-public/docs/images/doc_center/line.svg) no-repeat;
  background-size: contain;
  z-index: -1;
}

.desc-text {
  font-size: 14px;
  color: #1D2129;
  letter-spacing: 0;
  line-height: 22px;
  text-align: center;
  margin-bottom: 20px;
}

.steps-image{
  max-width: 1040px;
  margin: 20px auto 32px;
}
.reward-image {
  max-width: 816px;
  margin: 20px auto 32px;
}

.steps-image img,
.reward-image img {
  width: 100%;
  display: block;
}

.reward-list {
  margin: 20px 0;
  position: relative;
}

.reward-list ul {
  list-style: none;
  padding: 0;
  margin: 0;
}

.reward-list li {
  display: grid;
  grid-template-columns: 1fr 1fr 1fr 1fr 1fr;
  align-items: center;
  padding: 15px 20px;
  margin: 5px 0;
  background-color: #F7F8FA;
  font-size: 14px;
  color: #4E5969;
}

.reward-list li:first-child {
  background-color: #E8F3FF;
  font-weight: 500;
  color: #1D2129;
}

.reward-list .winners {
  overflow: hidden;
  width: 816px;
  height: 240px; /* 调整为显示5行：40px * 6 */
  min-height: 40px;
  margin: 4px auto;
}
.reward-list .winners.less-than-5 {
  height: auto; /* 当获奖者少于5个时，自动调整高度 */
}
.winners-header {
  display: grid;
  grid-template-columns: 1fr 1fr 1fr 1fr 1fr;
  align-items: center;
  padding: 9px 16px;
  background-color: #EBF2F5;
  font-size: 14px;
  color: #4E5969;
  font-weight: bold;
  letter-spacing: 0;
  line-height: 22px;
  position: sticky;
  top: 0;
  z-index: 2;
  border-radius: 8px;
}

.winners-content {
  position: relative;
  will-change: transform;
}

.winner-item {
  display: grid;
  grid-template-columns: 1fr 1fr 1fr 1fr 1fr;
  align-items: center;
  padding: 9px 16px;
  font-size: 14px;
  color: #1D2129;
  height: 40px;
  box-sizing: border-box;
  will-change: transform;
}

/* 使用固定的类名来控制背景色 */
.winner-item.even-row {
  background-color: #FFFFFF;
}

.winner-item.odd-row {
  background-color: #FAFBFB;
}

.no-more {
  display: none;
  margin: 24px auto;
  font-weight: 400;
  font-size: 14px;
  color: #8B8B8B;
  letter-spacing: 0;
  line-height: 22px;
  text-align: center;
}
@keyframes scrollUp {
  from {
    transform: translateY(0);
  }
  to {
    transform: translateY(-50%); /* 只移动一半高度，因为复制了一份数据 */
  }
}