@media (max-width: 767px) {
    body {
        min-width: auto;
    }

    html,
    body {
        font-family: '微软雅黑';
        font-size: 14px;
        text-align: center;
        color: #333;
        line-height: 28px;
    }

    .M_topNav ul {
        width: 100%;
    }

    .header_center {
        width: 100%;
    }

    .content_main {
        width: 100%;
    }

    .mainAd {
        width: 100%;
    }

    .mainAd .swiper-slide {
        width: 100%;
    }

    .content {
        padding: 0 .24rem;
    }

    img {
        width: 100% !important;
        height: auto !important;
    }

    .area_list {
        flex-wrap: wrap;
    }

    .area_list .area_item {
        width: 48%;
        margin-bottom: 20px;
    }

    .content_left {
        width: 100%;
        margin-bottom: .3rem !important;
    }

    .content_right {
        width: 100%;
    }

    .content_bottom {
        flex-wrap: wrap;
    }

    .content_right_top_img {
        width: 100%;
    }

    .area_item_img {
        width: 100%;
        height: auto;
    }

    .content_top {
        flex-wrap: wrap;
        margin-bottom: .3rem;
        margin-top: .4rem;
    }

    .top_l {
        width: 100%;
    }

    .area_new {
        margin: 0;
    }

    .top_r {
        width: 100%;
    }

    .content_left_item {
        height: auto;
    }

    .content_left {
        margin-bottom: 40px;
    }

    .content_right_top_img {
        height: auto;
    }

    .content_right_bottom_item_img img {
        width: 140px !important;
        height: 90px !important;
    }

    .header_nav {
        display: none;
    }

    .top_l {
        height: auto;
        margin-bottom: 0;
    }

    .top_r_title {
        font-size: 30px;
        margin-bottom: 20px;
    }

    .top_r {
        padding: .3rem .24rem;
        height: auto;
    }

    .top_r_abstract {
        margin-bottom: 20px;
    }

    .content_right_bottom {
        margin-top: .3rem;
    }

    .content_right_bottom_header,
    .content_right_top_header,
    .area_header,
    .content_left_header {
        height: 0.95rem;
        margin: 0 0.24rem .4rem;
        padding: 0;
    }

    .content_right_bottom_header .content_left_title,
    .content_right_top_header .content_right_title,
    .area_header .area_title,
    .content_left_header .content_left_title {
        font-size: 0.36rem;
        line-height: 0.95rem;
        padding-right: 0.35rem;
    }

    .content_left_more,
    .content_right_top_header .content_right_more,
    .area_header .area_more,
    .content_left_header .content_left_more {
        font-size: 0.24rem;
        line-height: 0.95rem;
    }

    .top_r .top_r_title {
        line-height: 1.5;
        font-size: .36rem;
        margin-top: 0;
        margin-bottom: 10px;
        text-align: left;
    }

    .top_r .top_r_abstract {
        font-size: .28rem;
        margin-bottom: 10px;
    }

    .fp_subtitle {
        font-size: .3rem;
    }

    .top_r .top_r_date {
        font-size: .24rem;
        text-align: left;
    }

    .content_right_top_item_last {
        text-align: left;
    }

    .area_item .area_title {
        font-size: .3rem;
        font-weight: normal;
        line-height: 0.45rem;
        height: 1.35rem;
        padding: 6px 0;
        text-align: justify;
        -webkit-line-clamp: 3;
        padding: 0 5px;
        margin-top: 5px;
    }

    .area_item .area_abstract {
        font-size: 0.28rem;
        line-height: 1.5;
        -webkit-line-clamp: 2;
        line-clamp: 2;
        height: auto;
        padding: 0 10px;
        display: none;
    }

    .area_item .area_date {
        font-size: .24rem;
        text-align: left;
        padding: 0 5px;
        line-height: 0.28rem;
        height: 0.28rem;
        overflow: hidden;
        margin-bottom: 4px;
    }

    .content_bottom {
        margin-top: 0;
    }

    .content_left_item_content .content_left_item_title {
        font-size: .32rem;
    }

    .content_left_item_content .content_left_item_abstract {
        font-size: .24rem;
    }

    .content_right_bottom_item_img {
        width: 2.8rem;
        height: 1.8rem;
    }

    .content_right_bottom_item_content {
        text-align: left;
    }

    .content_right_bottom_item_content .content_right_bottom_item_title {
        font-size: .32rem;
        font-weight: normal;
    }

    .content_right_bottom_item_content .content_right_bottom_item_date {
        font-size: .24rem;
    }

    .content_right_bottom_item {
        margin-bottom: .35rem;
    }

    .content_right_top_item {
        text-align: left;
    }

    .content_right_top_item_title {
        font-size: .32rem;
        font-weight: normal;
    }

    .content_right_top_item_date {
        font-size: .24rem;
    }

    .content_left_item_content {
        padding-right: 0;
    }

    .area_list .area_item {
        margin-bottom: .3rem;
        height: auto;
    }

    .mb-only {
        /* display: block !important; */
    }

    .header {
        display: none !important;
    }

    .navbar-brand img {
        width: 150px !important;
        height: 38px !important;
    }

    .sub-channel-nav {
        display: flex !important;
        padding-top: 60px;
    }

    .navbar-brand {
        height: auto;
        padding: 0;
        line-height: unset;
    }

    .navbar-header {
        display: flex;
        justify-content: space-between;
        align-items: center;
        margin: 0 !important;
    }

    .navbar-header::before,
    .navbar-header::after {
        display: none;
    }

    .navbar-toggle {
        margin-right: 0;
    }

    .channel-img {
        width: 120px;
    }

    .sub-channel-nav ul {
        display: flex;
        width: 100%;
        margin-bottom: 0;
        /* justify-content: space-between; */
    }

    .sub-channel-nav ul li {
        margin-right: 20px;
        font-size: .28rem;
    }

    .sub-channel-nav ul a {
        color: #000;
    }

    #menu-nav {
        display: block !important;
    }
}

.mb-only {
    display: none;
}

.sub-channel-nav {
    display: none;
}

#menu-nav {
    display: none;
}

@media (max-width: 767px) {
    .mHeader {
        width: auto;
        background: #FFFFFF;
        position: relative;
    }

    .mHeader .hLogo {
        padding: 0.2rem 0;
        text-align: center;
    }

    .mHeader .hLogo a {
        width: 1.17rem;
        height: 0.53rem;
        display: block;
        margin: 0 auto;
    }

    .mHeader .hLogo img {
        width: 100%;
        height: 100%;
        display: block;
    }

    .mHeader .hSearch {
        position: absolute;
        top: 0.3rem;
        right: 0.35rem;
        width: 0.38rem;
        height: 0.38rem;
        z-index: 11;
    }

    .mHeader .hSearch a {
        border-width: 0;
        background: url(https://www.stdaily.com/resource/kjw/img/icon_search.png) no-repeat center center;
        background-size: 100% 100%;
        width: 0.38rem;
        height: 0.38rem;
        cursor: pointer;
        text-indent: -999px;
        font-size: 0;
        line-height: 0;
        overflow: hidden;
        display: block;
    }

    .mHeader .hMenu {
        padding: 0.2rem 0;
        padding-right: 0.8rem;
        position: relative;
    }

    .mHeader .hMenu .mBtn {
        width: 0.3rem;
        height: 0.22rem;
        position: absolute;
        top: 0.4rem;
        right: 0.4rem;
    }

    .mHeader .hMenu .mBtn .line {
        position: absolute;
        top: 0.09rem;
        left: 0;
        display: block;
        width: 0.3rem;
        height: 0.04rem;
        background-color: #333;
        border-radius: 0.02rem;
        transition: all .3s ease-in-out;
    }

    .mHeader .hMenu .mBtn .line:nth-child(1) {
        top: 0;
    }

    .mHeader .hMenu .mBtn .line:nth-child(3) {
        top: 0.18rem;
    }

    .mHeader .hMenu .mBtn.on {
        position: fixed;
        z-index: 999999999;
    }

    .mHeader .hMenu .mBtn.on .line {
        opacity: 0;
    }

    .mHeader .hMenu .mBtn.on .line:nth-child(1) {
        opacity: 1;
        transform: translateY(0.09rem) rotate(45deg);
    }

    .mHeader .hMenu .mBtn.on .line:nth-child(3) {
        opacity: 1;
        transform: translateY(-0.09rem) rotate(-45deg);
    }

    .mHeader .hMenu .menuBox {
        position: fixed;
        top: 0;
        left: 0;
        right: 0;
        bottom: 0;
        z-index: 999999;
        -webkit-overflow-scrolling: touch;
        -ms-scroll-chaining: none;
        overscroll-behavior: contain;
        overflow-y: auto;
        background: #FFFFFF;
        display: none;
    }

    .mHeader .hMenu .menuBox.on {
        display: block;
    }

    .mHeader .hMenu .menuBox ul {
        padding: 0.8rem;
    }

    .mHeader .hMenu .menuBox li {
        border-bottom: 0.01rem solid #999;
    }

    .mHeader .hMenu .menuBox li a {
        font-size: 0.3rem;
        line-height: 0.36rem;
        color: #333333;
        text-align: left;
        display: block;
        padding: 0.3rem;
    }

    .mHeader .hMenu .menuBox li a::after {
        content: "";
        width: 0.2rem;
        height: 0.2rem;
        border-width: 0.02rem 0.01rem 0 0;
        border-color: #999;
        border-style: solid;
        display: block;
        float: right;
        transform: rotate(45deg);
        margin-top: 0.1rem;
    }

    .mHeader .hMenu .swiper-container {
        width: auto;
        height: auto;
    }

    .mHeader .hMenu .swiper-slide {
        width: auto;
    }

    .mHeader .hMenu .swiper-slide a {
        padding: 0 0.35rem;
        font-size: 0.3rem;
        color: #333333;
        line-height: 0.6rem;
        text-align: center;
        display: inline-block;
        position: relative;
    }

    .mHeader .hMenu .swiper-slide:first-child a {
        color: #F25453;
    }

    .mHeader .hMenu .swiper-slide:first-child a::after {
        content: "";
        width: 0.5rem;
        height: 0.05rem;
        background: #F25453;
        position: absolute;
        bottom: 0;
        left: 50%;
        transform: translateX(-50%);
    }

    .mHeader .hMenu .swiper-slide a:hover {
        color: #333333;
    }


    .sub-channel-nav {
        box-shadow: 0px 15px 10px -15px rgba(0, 0, 0, 0.35);
    }

    .channel-menu {
        width: 100%;
    }

    .channel-menu .swiper-slide {
        width: auto;
        margin-right: 20px;
        font-size: .3rem;
    }

    .channel-menu .swiper-slide.swiper-slide-active {
        border-bottom: 2px solid #bc0a16;
    }

    .area_list .area_item:hover {
        transform: unset;
    }

    .area_item_img img {
        height: 2.2rem !important;
    }
}

.content_right_bottom_item_img img {
    vertical-align: top;
}