.dropdown{
    display: none;
}
/* 小屏移动端适配 (768px以下) */
@media (max-width: 768px) {
    .main-content{
        width:100%!important;
    }
    .main-content>div.main_conter:first-child{
        display: none;
    }
    .main-content>div.main_conter:last-child{
        width: 100%!important;
         margin-top: 10px!important;
    }
    .main-content>div.main_conter .index_title {
        display: none;
    }
    .article{
        width: 100%;
        padding: 10px;
        margin: 0;
    }
    .article .tit{
        font-size: 20px;
    }
    .article .data1{
        display: none!important;
    }
    .article .data2{
        display: block!important;
        font-size: 13px;
    }

    /* 下拉容器 */
    .dropdown {
        display: block;
        position: relative;
        width: 100%;
        border-bottom: 1px solid #888;
        text-align: center;
        margin-bottom: 10px;
    }

    /* 触发按钮 */
    .dropdown-btn {
        width: 100%;
        margin: 0 auto;
        padding: 8px 12px;
        border-radius: 4px;
        text-align: center;
        cursor: pointer;
        background: #fff;
        display: flex;
        justify-content: space-between;
        align-items: center;
        color: #2c6cc3;
        font-size: 19px;
        font-weight: 600;
        display: flex;
        justify-content: center;
    }

    .dropdown-btn::after {
        content: "▼";
        font-size: 10px;
        color: #666;
        padding-left: 13px;
    }

    /* 下拉列表 */
    .dropdown-list {
        position: absolute;
        top: 100%;
        left: 50%;
        transform: translatex(-50%);
        width: 96%;
        box-shadow: 0px 1px 2px 2px #e3e3e3;
        border-top: none;
        border-radius: 0 0 4px 4px;
        background: #fff;
        display: none;
        border: 1px solid #ddd;
        border-bottom: 0;
        z-index: 999;
    }

    /* 悬停显示列表 */
    .dropdown:hover .dropdown-list {
        display: block;
    }

    /* 列表项链接 */
    .dropdown-list a {
        display: block;
        padding: 12px;
        color: #333;
        border-bottom: 1px solid #ddd;
    }
    
    /* 选中态（蓝色字体）+ hover效果 */
    .dropdown-list a.active {
        color: #1677ff;
        font-weight: 500;
    }

    .dropdown-list a:hover {
        background: #f5f5f5;
    }
}