/* 全局样式重置 */
        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
            font-family: "Microsoft Yahei", sans-serif;
        }

        body {
            background-color: #fff;
        }

        /* 主容器 */
        .splb-container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 20px;
        }

        /* 导航栏 */
        .splb-nav {
            display: flex;
            justify-content: center;
            border-bottom: 1px solid #e5e5e5;
            margin-bottom: 20px;
        }

        .splb-nav-item {
            padding: 10px 20px;
            margin: 0 10px;
            color: #666;
            text-decoration: none;
            font-size: 14px;
            position: relative;
            cursor: pointer;
        }

        .splb-nav-item.active {
            color: #d92b2b;
            font-weight: bold;
        }

        .splb-nav-item.active::after {
            content: '';
            position: absolute;
            bottom: -1px;
            left: 0;
            width: 100%;
            height: 2px;
            background-color: #d92b2b;
        }

        /* 子标签栏（筛选分类） */
        .splb-sub-nav {
            display: flex;
            justify-content: center;
            margin-bottom: 30px;
            flex-wrap: wrap;
            gap: 8px;
            /* 默认显示，因为初始选中视频专区 */
        }

        /* 子导航隐藏类 */
        .splb-sub-nav.hidden {
            display: none;
            margin-bottom: 0;
        }

        .splb-sub-nav-item {
            padding: 8px 20px;
            border: 1px solid #e5e5e5;
            border-radius: 4px;
            color: #666;
            text-decoration: none;
            font-size: 13px;
            cursor: pointer;
            transition: all 0.2s ease;
        }

        .splb-sub-nav-item.active {
            background-color: #d92b2b;
            color: #fff;
            border-color: #d92b2b;
        }

        /* 视频网格布局 */
        .splb-video-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 20px;
            margin-bottom: 40px;
        }

        /* 视频卡片 */
        .splb-video-card {
            border-radius: 8px;
            overflow: hidden;
            position: relative;
            cursor: pointer;
            transition: all 0.3s ease;
            display: block; /* 默认显示 */
        }

        /* 筛选隐藏类 */
        .splb-video-card.hidden {
            display: none;
        }

        /* 分页隐藏类 */
        .splb-video-card.pagination-hidden {
            display: none;
        }

        .splb-video-card:hover {
            transform: translateY(-5px);
            box-shadow: 0 5px 15px rgba(0,0,0,0.1);
        }

        /* 视频封面 */
        .splb-video-cover {
            width: 100%;
            padding-top: 75%; /* 4:3 比例 */
            position: relative;
            display: flex;
            align-items: center;
            justify-content: center;
            background-size: cover;
            background-position: center;
        }

        /* 不同背景色 */
        .splb-video-cover.blue {
            background-color: #d0e8f9;
        }

        .splb-video-cover.beige {
            background-color: #e8dcc4;
        }

        .splb-video-cover.dark {
            background-color: #333333;
        }

        /* 播放按钮 */
        .splb-play-btn {
            width: 50px;
            height: 50px;
            background-color: rgba(255,255,255,0.8);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            position: absolute;
            top: 50%;
            left: 50%;
            transform: translate(-50%, -50%);
            transition: all 0.3s ease;
        }

        .splb-play-btn::after {
            content: '';
            width: 0;
            height: 0;
            border-left: 15px solid #d92b2b;
            border-top: 10px solid transparent;
            border-bottom: 10px solid transparent;
            margin-left: 3px;
        }

        .splb-video-card:hover .splb-play-btn {
            background-color: rgba(217,43,43,0.9);
        }

        .splb-video-card:hover .splb-play-btn::after {
            border-left-color: #fff;
        }

        /* 视频标题 */
        .splb-video-title {
            padding: 12px;
            background-color: #fff;
            font-size: 13px;
            color: #333;
            text-align: center;
        }

        /* 空状态提示 */
        .splb-empty-tip {
            grid-column: 1 / -1;
            text-align: center;
            padding: 50px 0;
            color: #999;
            font-size: 14px;
            display: none;
        }

        /* 非视频专区的内容容器（初始隐藏） */
        .splb-other-content {
            display: none;
            padding: 50px 20px;
            
            color: #666;
            font-size: 14px;
        }

        .splb-other-content .active{
            display: block;
        }

        /* 分页样式 */
        .splb-pagination {
            display: flex;
            justify-content: center;
            align-items: center;
            gap: 8px;
            margin-top: 30px;
        }

        .splb-pagination-item {
            width: 36px;
            height: 36px;
            line-height: 36px;
            text-align: center;
            border: 1px solid #e5e5e5;
            border-radius: 4px;
            color: #666;
            font-size: 14px;
            cursor: pointer;
            transition: all 0.2s ease;
        }

        .splb-pagination-item:hover {
            border-color: #d92b2b;
            color: #d92b2b;
        }

        .splb-pagination-item.active {
            background-color: #d92b2b;
            color: #fff;
            border-color: #d92b2b;
        }

        .splb-pagination-item.disabled {
            color: #ccc;
            cursor: not-allowed;
            border-color: #eee;
        }

        .splb-pagination-item.disabled:hover {
            border-color: #eee;
            color: #ccc;
        }
        
 .xh-nr{
             width: 100%;
            margin:0px auto;
        }
 .xh-nr p{
         margin-top: 20px;
                position: absolute;
            font-weight: bold;
             font-size: 48px;
    color: #fff;
        }
  .xh-nr video{
           height: 100%;
           width: 100%;
           pointer-events: none;
          }
        .xh1{
            height: 100%;
               display: flex;
    flex-direction: column;
    align-items: center;
        }
           .i-container {
           width: 100%;
            margin: 0 auto;
            background-color: #1e1e1e;
         /*max-height: 800px;*/
            overflow: hidden;
            box-shadow: 0 8px 16px rgba(0, 0, 0, 0.5);
            border: 1px solid #333;
        }

    /* 表格外层容器核心样式 */
  /* 外层容器样式 */
        .i-table-wrapper {
            overflow-x: auto;
        }

        /* 表格核心样式 */
        .i-table-wrapper table {
            max-width: 81%;
            border-collapse: collapse;
            font-size: 13px;
            width: 1540px;
            margin: 50px auto;
            height: max-content;
        }

        /* 表格单元格基础样式 */
        .i-table-wrapper table th,
        .i-table-wrapper table td {
            padding: 14px 16px;
            /*border-bottom: 1px solid #333;*/
            vertical-align: middle;
        }
        

        /* 表头样式（若有thead则生效） */
        .i-table-wrapper table thead th {
            background-color: #2c2c2c;
            color: #aaa;
            font-weight: 600;
            text-transform: uppercase;
            letter-spacing: 0.5px;
            position: sticky;
            top: 0;
            z-index: 20;
            border-bottom: 2px solid #444;
        }
        
        /* 左侧分类列（带rowspan的td）样式 */
        .i-table-wrapper table td[rowspan] {
            background-color: #4a4a4a !important;
            color: #ffffff;
            font-weight: bold;
            text-align: center;
            width: 100px;
            writing-mode: vertical-lr;
            letter-spacing: 4px;
            padding: 20px 10px;
            border-radius: 15px;
            
        }
        .i-table-wrapper table tbody{
            height: max-content;
        }
        
        /* 斑马纹 - 偶数行背景 */
        .i-table-wrapper table tbody tr:nth-child(even) {
            background-color: unset;
        }

        /* 斑马纹 - 奇数行背景 */
        .i-table-wrapper table tbody tr:nth-child(odd) {
            background-color: #363636;
        }

        /* 行悬停效果 */
        .i-table-wrapper table tbody tr:hover {
            background-color: #3a3a3a !important;
            cursor: pointer;
            transition: background-color 0.2s ease;
        }

        /* 参数名列（第二列td）样式 */
        .i-table-wrapper table tbody tr td:nth-child(2) {
            background-color: inherit;
            font-weight: 500;
            color: #e0e0e0;
            width: 160px;
            white-space: nowrap;
        }

        /* 数值列（第三列及以后td）样式 */
        .i-table-wrapper table tbody tr td:nth-child(n+3) {
            background-color: inherit;
            color: #cccccc;
        }

        /* 单位文本（span标签）样式 */
        .i-table-wrapper table td span {
            color: #888;
            font-size: 11px;
            margin-left: 2px;
        }

        /* 滚动条美化 */
        .i-table-wrapper::-webkit-scrollbar {
            height: 10px;
            width: 10px;
        }
        .i-table-wrapper::-webkit-scrollbar-track {
            background: #1e1e1e;
        }
        .i-table-wrapper::-webkit-scrollbar-thumb {
            background: #444;
            border-radius: 5px;
            border: 2px solid #1e1e1e;
        }
        .i-table-wrapper::-webkit-scrollbar-thumb:hover {
            background: #555;
        }