@media screen and (max-width: 768px) {

    /* 头部*/
    body {
        /* width: 100%; */
        overflow-x: hidden;
        max-width: 100vw
    }

    ;

    * {
        margin: 0;
        padding: 0;
        box-sizing: border-box;
    }

    .top {
        width: 100vw;
        background-color: #153860;
        color: #fff;
        height: 54px;
        margin-top: 44px;
        position: relative;
        margin-bottom: 0;
        padding-top: 7px;
        box-sizing: border-box;

    }

    .top .m-logo {

        width: 281px;
        height: 36px;
        display: block;
        margin-left: 19px;
    }

    .top .pc-logo {
        display: none;
    }

    .top .search {
        display: none;
    }

    .wrapper {
        width: 100vw;

        margin: 0;
        /* padding: 0 15px; */
    }

    /* 汉堡菜单 */
    .nav {
        height: 0;
    }

    .nav .hamburger {
        display: block;
        width: 25px;
        height: 20px;
        position: absolute;
        top: -40px;
        right: 15px;
        z-index: 100;
        cursor: pointer;
    }

    .nav .hamburger span {
        display: block;
        width: 100%;
        height: 2px;
        background: #FFFFFF;
        margin: 5px 0;
        border-radius: 2px;
    }

    .nav ul {
        display: none;
        flex-direction: column;
        background: #153860;
        position: absolute;
        top: -2px;
        left: 0;
        width: 100%;
        border-bottom: 1px solid #eee;
        z-index: 99;
        padding: 10px 0;
        opacity: 0.85;
        padding-left: 27px;
    }

    .nav ul.active {
        display: flex;
    }

    .nav li {
        padding: 8px 15px;
        border-bottom: 1px solid #f5f5f5;
        height: 46px;
        width: 85vw;
    }

    .nav ul li a {
        display: block;
        width: 60px;
        height: 20px;
        font-family: Source Han Sans SC, Source Han Sans SC;
        font-weight: 400;
        font-size: 14px;
        color: #FFFFFF;
        text-align: left;
        font-style: normal;
        text-transform: none;
        line-height: 27px;
    }

    .nav li ul {
        position: static;
        border: none;
        padding-left: 15px;
    }

    .nav ul li:hover ul {
        display: none;
        float: none;
        position: absolute;
    }

    .centercon {
        width: 100vw;
        height: auto;
        margin: 0;
        padding: 0 4vw;
        position: relative;
        background-color: #FFFFFF;
    }

    .centercon .title {
        width: 92vw;
        height: 36px;
        background-color: #153860;
        display: flex;
        justify-content: flex-start;
        align-items: center;
        padding-top: 0;
        padding-left: 10px;
        box-sizing: border-box;
        position: absolute;
        top: 32px;

    }

    .centercon .title h3 {
        display: block;
        width: 65px;
        height: 20px;
        font-family: Source Han Sans SC, Source Han Sans SC;
        font-weight: 400;
        font-size: 14px;
        color: #FFFFFF;
        text-align: left;
        font-style: normal;
        text-transform: none;
    }

    .centercon .content {
        margin: 0;
        width: 89vw;
        height: auto;
        display: flex;
        flex-direction: column;
    }

    .centercon .content .left {
        height: auto;
    }

    .centercon .content .left .left1 {
        width: 170px;
        height: 17px;
        font-family: Source Han Sans SC, Source Han Sans SC;
        font-weight: 400;
        font-size: 12px;
        color: #CCCCCC;
        text-align: left;
        font-style: normal;
        text-transform: none;
        position: absolute;
        top: 10px;
    }

    .left .left2list {
        width: 92vw;
        height: auto;
        background-color: #FFFFFF;
        padding-top: 0;
        padding-left: 10px;
        box-sizing: border-box;
        margin-top: 64px;
        box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
    }

    .item2 {
        width: 100%;
        height: 41px;
        border-bottom: 1px solid #CCCCCC;
        background-color: #FFFFFF;
    }

    .left2list li:hover {
        background-color: #FFFFFF;
    }

    .item2 a {
        padding: 0;
        width: 66px;
        height: 20px;
        font-family: Source Han Sans SC, Source Han Sans SC;
        font-weight: 400;
        font-size: 14px;
        color: #153860;
        text-align: left;
        font-style: normal;
        text-transform: none;
        padding-top: 10px;
    }

    /* 1. 让 title 盒子变成弹性布局，方便汉堡按钮靠右 */
    .title {
        display: flex;
        justify-content: space-between;
        align-items: center;
        padding: 0 10px;
    }

    /* 2. 汉堡按钮样式 */
    .title .hamburger {
        width: 23px;
        height: 24px;
        position: absolute;
        top: 10px;
        left: 81vw;
        cursor: pointer;
        /* 移动端才显示，PC端隐藏 */
        display: none;
    }

    .title .hamburger span {
        display: block;
        position: absolute;
        width: 100%;
        height: 1px;
        background: #fff;
        /* 线条颜色，可根据你的标题栏背景调整 */
        border-radius: 2px;
        transition: all 0.3s ease;
    }

    /* 三条线的位置 */
    .title .hamburger span:nth-child(1) {
        top: 0;
    }

    .title .hamburger span:nth-child(2) {
        top: 8px;
    }

    .title .hamburger span:nth-child(3) {
        top: 16px;
    }

    /* 点击后变成叉号的动画 */
    .title .hamburger.active span:nth-child(1) {
        top: 10px;
        transform: rotate(45deg);
    }

    .title .hamburger.active span:nth-child(2) {
        opacity: 0;
    }

    .title .hamburger.active span:nth-child(3) {
        top: 10px;
        transform: rotate(-45deg);
    }

    /* 3. 列表的默认和激活状态 */
    .left2list {
        /* 默认隐藏 */
        display: none;
        background: #fff;
        /* 列表背景色，可根据需要修改 */
        /* 阴影效果 */
        box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
        padding: 10px 0;
        margin: 0;
    }

    /* 激活时显示 */
    .left2list.active {
        display: block;
    }

    /* 4. 响应式：仅在移动端显示汉堡按钮 */
    @media (max-width: 767px) {
        .title .hamburger {
            display: block;
        }
    }

    .centercon .content .right {
        width: 92vw;
        margin-top: 63px;
        height: auto;
        margin-bottom: 25px;
    }

    .right .p1 {
        width: 92vw;
        height: 24px;
        font-family: Source Han Sans SC, Source Han Sans SC;
        font-weight: 400;
        font-size: 16px;
        color: #333333;
        text-align: center;
        font-style: normal;
        text-transform: none;
        padding-top: 21px;
    }

    .right .p2 {
        width: 92vw;
        height: 11px;
        font-family: Source Han Sans SC, Source Han Sans SC;
        font-weight: 400;
        font-size: 8px;
        color: #333333;
        text-align: center;
        font-style: normal;
        text-transform: none;
    }

    .right .p3 {
        width: 92vw;
        height: auto;
        font-family: Source Han Sans SC, Source Han Sans SC;
        font-weight: 400;
        font-size: 12px;
        color: #333333;
        text-align: left;
        font-style: normal;
        text-transform: none;
        padding-top: 15px;
        padding-left: 0;
        padding-right: 0;
    }













    /* 底部 */
    .bottom {
        width: 100vw;
        margin: 0;
        height: auto;
    }

    .bottom_logo {
        width: auto;
        height: auto;
        margin-top: 14px;
    }

    .bottom_logo .boimgpc {
        display: none;
    }

    .bottom_center {
        width: 100vw;
        margin-top: 25px;
        height: auto;
        display: flex;
        justify-content: flex-start;
    }

    .list_link {
        width: 75vw;
        height: 29px;
    }

    .list_link ul {
        height: auto;
        padding-left: 35px;
    }

    .list_link ul li {
        width: 60px;
        height: 9px;
        padding: 0;
        line-height: 9px;
        margin-bottom: 8px;
    }

    .list_link ul li a {
        width: 54px;
        height: 9px;
        font-family: Source Han Sans SC, Source Han Sans SC;
        font-weight: 400;
        font-size: 6px;
        color: #FFFFFF;
        text-align: left;
        font-style: normal;
        text-transform: none;

    }

    .bottom_logo .boimgm {
        display: block;
        width: 60vw;
        height: auto;
        display: flex;
    }

    .ewm {
        width: auto;
        height: auto;
    }

    .ewm img {
        width: 29px;
        height: 29px;
    }

    .copyright {
        padding: 0;
        width: 100vw;
        box-sizing: border-box;
        padding-left: 30vw;
        padding-top: 25px;
    }

    .copyright p {
        width: 75px;
        height: 6px;
        font-family: Source Han Sans SC, Source Han Sans SC;
        font-weight: 400;
        font-size: 4px;
        color: #FFFFFF;
        text-align: center;
        font-style: normal;
        text-transform: none;
        line-height: 25px;
    }
}