/* 广告样式 */
    .picture-ad {
        position: fixed;
        top: 50%;
        transform: translateY(-50%);
        width: 150px;
        max-height: 225px;
        z-index: 9999;
        display: none;
    }

    .picture-ad-left {
        left: 10px;
    }

    .picture-ad-right {
        right: 10px;
    }

    .picture-ad-content {
        position: relative;
        width: 100%;
        height: 100%;
    }

    .picture-ad-img {
        width: 100%;
        height: 100%;
        object-fit: cover;
        border-radius: 4px;
    }

    .picture-ad-close {
        position: absolute;
        top: -8px;
        right: -8px;
        width: 20px;
        height: 20px;
        background-color: #fff;
        border: 1px solid #ddd;
        border-radius: 50%;
        cursor: pointer;
        font-size: 14px;
        line-height: 18px;
        text-align: center;
        z-index: 10000;
    }

    .picture-ad-title {
        color: #666;
        font-size: 12px;
        margin-top: 4px;
    }

    .text-xs {
        font-size: 12px;
    }

    .mt-1 {
        margin-top: 0.25rem;
    }

    .truncate {
        overflow: hidden;
        text-overflow: ellipsis;
        white-space: nowrap;
    }

    .text-center {
        text-align: center;
    }