@media screen and (max-width: 1220px) {
    .head, .i_ma, .f_nav, .bq, .scd, .link, .hy_top_con, .pro dl {
        width: 960px;
    }

    .head .logo img, .head .logo {
        width: 315px;
        height: 49px;
    }

    .head .nav_m {
        width: 630px;
    }

    .nav li {
        margin-left: 18px;
    }

    .i_ma li {
        margin: 0 3px;
    }

    .i_ma li {
        width: 230px;
    }

    .i_ma li img {
        width: 230px;
        height: 115px;
    }

    .f_nav li {
        width: 160px;
    }

    .f_nav li.f_ct {
        width: 200px;
    }

    .pro dl dt {
        margin-right: 25px;
    }

    .pro dl dd {
        margin-left: 25px;
        width: 480px;
    }

    .scd .scd_r {
        width: 740px;
    }

    .case dl dd {
        width: 555px;
    }

    .contact dt img, .contact dt {
        width: 436px;
        height: 265px;
    }

    .contact dt {
        margin-right: 0;
    }

    .contact dd {
        margin-left: 0;
    }
}

@media screen and (max-width: 990px) {
    .head, .i_ma, .f_nav, .bq, .scd, .hy_top_con, .link, .pro dl {
        width: 740px;
    }

    .head {
        position: relative;
    }

    .nav_m .n_icon {
        display: block;
    }

    .head .nav_m {
        margin-top: 0;
    }

    .head .nav_m .nav {
        position: absolute;
        right: 0;
        top: 112px;
        background: #fff;
        z-index: 9999;
        display: none;
    }

    .nav li {
        margin-left: 40px;
    }

    .i_line em {
        width: 91px;
        height: 26px;
        margin-left: -13px;
        background-size: 100%;
    }

    .i_ma li {
        margin-bottom: 25px;
        width: 360px;
    }

    .i_ma li img {
        width: 360px;
        height: 180px;
    }

    .f_nav li.f_ct {
        padding-right: 0;
        margin-right: 0;
        background: none;
    }

    .f_nav li {
        min-height: 160px;
        width: 190px;
    }

    .pro dl dt img, .pro dl dt {
        width: 328px;
        height: 230px;
    }

    .pro dl dd {
        width: 340px;
    }

    .scd .scd_r {
        margin-left: 0;
        float: right;
        width: 540px;
    }

    .case dl dd {
        width: 355px;
    }

    .case dl dd .title a {
        font-size: 16px;
    }

    .contact dt img, .contact dt {
        width: 387px;
        height: 235px;
    }

    .contact dd {
        width: 320px;
    }

    .contact dd .c_m span {
        width: 280px;
    }
}

@media screen and (max-width: 770px) {
    .head, .i_ma, .f_nav, .bq, .scd, .hy_top_con, .link, .pro dl {
        width: 480px;;
    }

    .nav li a {
        font-size: 14px;
    }

    .nav li {
        margin-left: 0;
    }

    .i_ma li {
        width: 230px;
    }

    .i_ma li img {
        width: 230px;
        height: 115px;
    }

    .f_nav li {
        width: 100px;
    }

    .bq .bq_r {
        width: 60%;
    }

    .scd .about img {
        width: 100%;
        height: auto;
        margin-bottom: 15px;
    }

    .pro dl dt img, .pro dl dt {
        width: 430px;
        height: 301px;
    }

    .pro dl dd {
        width: 430px;
    }

    .scd .scd_l, .scd .scd_r {
        width: 100%;
    }

    .scd_l .s_nav {
        width: 478px;
    }

    .scd .scd_l {
        margin-bottom: 25px;
    }

    .case dl dd {
        width: 295px;
    }

    .pages a {
        margin-bottom: 8px;
    }

    .join img {
        width: 90% !important;
    }

    .contact dt img, .contact dt {
        width: 480px;
        height: 291px;
    }

    .contact dd {
        width: 100%;
    }

    .contact dd .c_m span {
        width: 450px;
    }

    .contact dd .c_logo, .contact dd h6 {
        width: 100%;
        text-align: center;
    }
}

@media screen and (max-width: 510px) {
    .head, .i_ma, .f_nav, .bq, .scd, .link, .hy_top_con, .pro dl {
        width: 320px;
    }
    .hy_top_con span{
        display: none;
    }
    .hy_top_con .fenxiang{
       text-align: center;
        float:unset;
    }
    .head {
        position: relative;
    }

    .head .logo img, .head .logo {
        width: 160px;
        height: 60px;
    }

    .bq .bq_l, .bq .bq_r {
        width: 100%;
        text-align: left;
    }

    .head .nav_m .nav li {
        width: 100%;
        text-align: right;
    }

    .nav li a {
        width: 90%;
        padding: 0 5%;
        height: 30px;
        line-height: 30px;
    }

    .f_nav li {
        width: 49%;
        padding: 0;
        margin-right: 0;
        background: none;
    }

    .f_nav li.f_ct {
        width: 90%;
    }

    .f_nav li.f_ct {
        margin-top: 15px;
    }

    .f_nav li .share {
        text-align: left;
    }

    .i_line em {
        margin-left: -50px;
    }

    .i_ma li {
        width: 300px;
    }

    .i_ma li img {
        width: 300px;
        height: 150px;
    }

    .nav_m .n_icon {
        top: 38px;
    }

    .head .nav_m .nav {
        top: 94px;
    }

    .scd {
        padding: 20px 0 30px;
    }

    .pro dl {
        padding: 10px 0;
    }

    .pro dl dt {
        margin-right: 10px;
    }

    .pro dl dt img, .pro dl dt {
        width: 300px;
        height: 210px;
    }

    .pro dl dd {
        width: 300px;
        margin-left: 10px;
    }

    .pro dl dd .more {
        margin-bottom: 10px;
    }

    .scd_l .s_nav {
        width: 318px;
    }

    .case dl dt, .case dl dt img {
        width: 320px;
        height: 244px;
    }

    .case dl dt {
        margin-left: 0;
    }

    .case dl dd {
        width: 320px;
        margin-right: 0;
    }

    .join img {
        width: 98% !important;
    }

    .contact dt img, .contact dt {
        width: 320px;
        height: 194px;
    }

    .contact dd .c_m span {
        width: 290px;
    }

    .contact dd .c_logo, .contact dd h6 {
        text-align: left;
        font-size: 14px;
    }
}