.ad-img-container {
        display: flex;
        justify-content: center;
        margin-bottom: 1px;
    }

    .ad-img {
        width: 1140px !important;
        max-width: 100%;
        height: auto;
        display: block;
    }

    .ad-contact {
         display: flex;
        align-items: center;
         justify-content: center;
    }
    .qr-img {
        filter: grayscale(100%);
        transition: filter 0.3s ease, transform 0.3s ease; /* 平滑过渡 */
    }

    /* 鼠标悬停时：颜色恢复，稍微放大 */
    .qr-img:hover {
        filter: grayscale(0%);
        transform: scale(1.1); /* 可选：增加轻微放大效果 */
    }
    
    a:hover {
        color: red !important;
    }
    
    @media (min-width: 768px) {
    .ad-img-container {
        width: 100%;
        text-align: center;
        margin-bottom: 1px;
    }

    .ad-img-container img {
        width: 100%;
        height: auto;
        display: block;
    }
    }