.bili-video-container {
    position: relative;
    padding-bottom: 56.25%; /* 16:9 比例 */
    height: 0;
    overflow: hidden;
    max-width: 100%;
    margin: 1rem 0;
    border-radius: 8px; /* 可选：让视频卡片圆角一点 */
  }

  .bili-video-iframe {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    border: 0;
  }