/* 全局初始化 */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  background-color: #f5f7fa;
  color: #333;
  line-height: 1.6;
}

/* 全屏蓝色标题栏 */
.page-header {
  width: 100%;
  background: #3667db;
  padding: 40px 20px;
  text-align: center;
  margin-bottom: 40px;
}

.page-header h1 {
  color: #ec8620;
  font-size: 32px;
  font-weight: 600;
  margin: 0;
}

/* 居中内容容器 */
.content-container {
  max-width: 800px;
  margin: 0 auto;
  padding: 0 20px 60px;
}

/* 视频表格样式 */
.video-gallery {
  width: 100%;
  border-collapse: collapse;
  background: #ffffff;
  border-radius: 12px;
  overflow: hidden;
  box-shadow: 0 2px 15px rgba(0, 0, 0, 0.06);
}

/* 表头+单元格全居中 */
.video-gallery th,
.video-gallery td {
  padding: 24px;
  vertical-align: middle;
  text-align: center;
}

/* 表头样式 */
.video-gallery th {
  font-size: 16px;
  font-weight: 600;
  color: #1d2129;
  background-color: #f7f8fa;
}

/* 表格分隔线 */
.video-gallery thead tr {
  border-bottom: 2px solid #e5e6eb;
}
.video-gallery tbody tr {
  border-bottom: 1px solid #f2f3f5;
}
.video-gallery tbody tr:last-child {
  border-bottom: none;
}

/* 视频预览框 */
.preview-cell video {
  border-radius: 8px;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
  display: block;
  margin: 0 auto;
  max-width: 100%;
}

/* 描述文字 */
.desc-cell {
  font-size: 17px;
  color: #4e5969;
  line-height: 1.8;
}

/* ======================
   更新日志时间线样式
====================== */
.diary-list {
  width: 100%;
}

.diary-item {
  margin-bottom: 48px;
}

/* 左上角时间 */
.diary-date {
  font-size: 18px;
  font-weight: 600;
  color: #1d2129;
  margin-bottom: 12px;
  text-align: left;
}

/* 蓝色小圆+绿色分割线 */
.diary-divider {
  display: flex;
  align-items: center;
  margin-bottom: 16px;
}

.blue-dot {
  width: 12px;
  height: 12px;
  background-color: #165DFF;  /* 和标题栏同色蓝色 */
  border-radius: 50%;
  flex-shrink: 0;
}

.green-line {
  flex: 1;
  height: 2px;
  background-color: #52c41a;  /* 绿色分割线 */
  margin-left: 8px;
}

/* 日志内容（左边和绿色线起点对齐） */
.diary-content {
  margin-left: 20px;  /* 12px小圆 + 8px间距 = 20px，完美对齐 */
  font-size: 16px;
  line-height: 1.8;
  color: #4e5969;
  text-align: left;
}

.diary-content p {
  margin-bottom: 12px;
}

.diary-content p:last-child {
  margin-bottom: 0;
}

/* 移动端适配 */
@media (max-width: 768px) {
  .video-gallery thead {
    display: none;
  }
  .video-gallery tbody tr {
    display: block;
    margin-bottom: 20px;
    border-radius: 8px;
    border: 1px solid #f2f3f5;
  }
  .video-gallery td {
    display: block;
    padding: 16px;
    text-align: center;
  }
  .preview-cell video {
    width: 100%;
  }
}