.reward-table {
  width: 100%;
  border-collapse: collapse;
  margin: 24px 0;
  font-size: 16px;
  background: #fff;
}
.reward-table th, .reward-table td {
  border: 1px solid #333;
  padding: 10px 8px;
  text-align: center;
  vertical-align: middle;
}
.reward-table th {
  background: #f5f5f5;
  font-weight: bold;
}
.reward-table tr:last-child td {
  background: #fafafa;
  /* font-weight: bold; */
  font-size: 18px;
}
.reward-table td[rowspan], .reward-table th[rowspan] {
  background: #f9f9f9;
}
.reward-table td[colspan] {
  text-align: left;
}
.main-title {
  text-align: center;
  font-size: 2.2em;
  font-weight: bold;
  margin: 32px 0 24px 0;
  letter-spacing: 2px;
}
.section-title {
  font-size: 1.4em;
  font-weight: bold;
  margin: 32px 0 16px 0;
  text-align: left;
  position: relative;
}
.section-title::before {
  content: '';
  display: inline-block;
  width: 6px;
  height: 22px;
  background: #bdbdbd;
  margin-right: 8px;
  vertical-align: middle;
}
.sub-title {
  font-size: 1.1em;
  font-weight: bold;
  margin: 18px 0 8px 0;
  text-align: left;
}
.content-p {
  text-indent: 2em;
  line-height: 1.9;
  margin: 8px 0;
  font-size: 1em;
  color: #fff !important;
}
.keyword {
  font-weight: bold;
  letter-spacing: 1px;
}
ul, ol {
  margin: 8px 0 8px 2em;
  padding-left: 1.2em;
  line-height: 1.8;
}
li {
  margin-bottom: 4px;
}
.top-bg {
    width: 100%;
    height: auto;
    object-fit: cover;
    display: block;
}
.content-area {
    background: #020228;
    border-radius: 24px 24px 0 0;
    margin-top: 0;
    padding: 32px 16px 16px 16px;
    min-height: 70vh;
    box-shadow: 0 -4px 24px rgba(0,0,0,0.12);
    position: relative;
    z-index: 2;
    color: #fff;
}
.reward-table {
    background: transparent;
    color: #fff;
}
.reward-table th, .reward-table td {
    background: transparent !important;
    color: #fff;
}
body {
    background: #020228;
}
.submit-btn {
    position: relative; /* 新增 */
    z-index: 1;         /* 新增，确保内容在上面 */
    display: block;
    width: 280px;
    height: 40px;
    line-height: 40px;
    font-size: 18px;
    text-align: center;
    background: #007bff;
    color: #fff;
    font-weight: bold;
    border-radius: 20px;
    text-decoration: none;
    margin: 0 auto;
}
.submit-btn::before {
  content: '';
  position: absolute;
  top: -3px; left: -3px; right: -3px; bottom: -3px;
  border-radius: 23px; /* 比按钮略大 */
  background: linear-gradient(270deg, #00f, #0ff, #f0f, #00f);
  background-size: 200% 200%;
  z-index: -1;
  animation: borderFlow 3s linear infinite;
}

@keyframes borderFlow {
  0% { background-position: 0% 50%; }
  100% { background-position: 200% 50%; }
}