@media screen and (max-width:1220px) {
    .f_bg .f_m,
    .f_bg .bq_bg .bq,
    .i_solution,
    .pro_m,
    .header .head,
    .scd {
        width: 960px;
    }
    .head .nav {
        margin-left: 50px;
        width: 595px;
    }
    .head .nav li {
        margin-right: 0px;
    }
    .head .nav li a {
        padding: 0 22px;
    }
    .solution li {
        width: 229px;
        margin-right: 14px;
    }
    .service li .tu {
        width: 140px;
        height: 140px;
    }
    .pro_l li {
        width: 304px;
    }
    .banner_s img {
        width: 2550px;
        height: 300px;
    }
    .solution dl dd {
        width: 490px;
    }
    .s_ctn .pro_l li img {
        width: 227px;
        height: 130px;
    }
    .service_a dt,
    .service_a dt img {
        width: 330px;
        height: 192px;
    }
    .service_a dd {
        width: 350px;
    }
}

@media screen and (max-width:980px) {
    .f_bg .f_m,
    .f_bg .bq_bg .bq,
    .i_solution,
    .pro_m,
    .header .head,
    .scd {
        width: 740px;
        margin: 0px auto;
    }
    .head .nav {
        margin-left: 20px;
        width: 415px;
    }
    .head .nav li {
        margin-right: 0px;
    }
    .head .nav li a {
        padding: 0 10px;
        font-size: 15px;
    }
    .head .logo {
        width: 164px;
    }
    .head .logo img {
        width: 164px;
        height: 42px;
    }
    .solution li {
        width: 174px;
    }
    .solution li .l_up {
        height: 260px;
    }
    .solution li .l_up .tu,
    .solution li .l_up .tu img {
        width: 100%;
        height: 230px;
    }
    .solution li .l_dn {
        height: 173px;
    }
    .solution li .l_up .title {
        font-size: 15px;
    }
    .solution li .l_dn p {
        font-size: 13px;
    }
    .service li .tu {
        width: 120px;
        height: 120px;
    }
    .service li .name {
        font-size: 18px;
        margin-bottom: 15px;
    }
    .pro_l li {
        width: 240px;
        margin-right: 10px;
    }
    .pro_l li .name {
        font-size: 16px;
    }
    .pro_l li p {
        font-size: 13px;
    }
    .f_bg .f_m .code {
        margin-left: 20px;
        padding-left: 20px;
    }
    .f_bg .f_m .f_mr {
        width: 55%;
    }
    .f_m .f_mr .num img {
        width: 40px;
        height: 40px;
    }
    .f_m .f_mr .num em {
        font-size: 26px;
    }
    .scd .scd_l {
        width: 190px;
    }
    .solution dl dt,
    .solution dl dt img {
        width: 120px;
        height: 120px;
    }
    .solution dl dd {
        width: 340px;
    }
    .banner_s img {
        width: 150%;
        height: auto;
        margin: 0px !important;
        margin-left: -18% !important;
    }
    .s_ctn .pro_l li {
        width: 48%;
    }
    .service_a dt {
        float: none;
        margin: 0px auto;
        margin-bottom: 50px;
    }
    .service_a dt,
    .service_a dt img {
        width: 373px;
        height: 217px;
    }
    .service_a dd {
        width: 100%;
        float: none;
        clear: both;
        margin: 0px;
    }
    .sv_l li {
        height: 220px;
        margin-bottom: 0px;
    }
    .contact_m ul li {
        width: 100%;
        float: none;
        margin: 0px;
        margin-bottom: 30px;
    }
}

@media screen and (max-width:770px) {
    .f_bg .f_m,
    .f_bg .bq_bg .bq,
    .i_solution,
    .pro_m,
    .header .head,
    .scd,
    .service {
        width: 480px;
        margin: 0px auto;
    }
    .head .nav {
        display: none;
    }
    .head .nav_m {
        display: block;
    }
    .header .head {
        position: relative;
        height: auto;
    }
    .header .head .logo {
        margin-bottom: 20px;
    }
    .head .search {
        margin-right: 80px;
        margin-top: 30px;
    }
    .head .nav_m {
        clear: both;
        margin-top: 30px;
    }
    .solution li {
        width: 226px;
        margin-bottom: 25px;
    }
    .fw .fw_bg {
        display: none;
    }
    .fw {
        height: auto;
        border: 0px;
    }
    .pro_l li {
        width: 460px;
        margin-bottom: 15px;
    }
    .f_bg .f_m .f_mr {
        width: 100%;
        float: none;
        clear: both;
        padding-top: 20px;
        text-align: left;
        border-top: 1px solid #47494F;
    }
    .f_m .f_mr .line {
        float: left;
    }
    .f_m .f_mr .num {
        margin-top: 15px;
    }
    .f_bg .f_m .code {
        margin-bottom: 20px;
    }
    .f_bg .f_m {
        padding-bottom: 20px;
    }
    .f_bg .bq_bg .bq span {
        float: none;
        width: 100%;
        text-align: left;
        display: block;
        margin-top: 10px;
    }
    .scd .scd_l {
        width: 470px;
        height: auto !important;
        float: none;
    }
    .scd .scd_r {
        width: 100% !important;
        float: none;
        margin-top: 30px;
    }
    .solution dl dd {
        width: 310px;
    }
    .solution dl dd h5 a {
        font-size: 18px;
    }
}

@media screen and (max-width:500px) {
    .f_bg .f_m,
    .f_bg .bq_bg .bq,
    .i_solution,
    .pro_m,
    .header .head,
    .scd,
    .service {
        width: 320px;
        margin: 0px auto;
    }
    .service li {
        height: 250px;
    }
    .header .head .logo {
        width: 100%;
        float: none;
        margin-bottom: 15px;
    }
    .head .search {
        float: left;
        margin-top: 0px;
        margin-bottom: 20px;
    }
    .nav_m .n_icon {
        top: -40px;
    }
    .box_h .title {
        width: 160px;
        font-size: 20px;
    }
    .box_h .line {
        width: 80px;
    }
    .box_h .line_l {
        left: -80px;
    }
    .box_h .line_r {
        right: -80px;
    }
    .solution li {
        width: 320px;
        margin-right: 0px;
    }
    .pro_l li {
        width: 320px;
    }
    .f_m .f_mr .num img {
        width: 30px;
        height: 30px;
        margin: 0 2px;
    }
    .f_m .f_mr .num em {
        font-size: 22px;
        vertical-align: top;
        margin-top: -5px;
    }
    .scd .scd_l {
        width: 300px;
    }
    .solution dl dd {
        width: 100%;
        margin-right: 0px;
    }
    .solution dl dt {
        float: none;
        margin: 0px auto;
        margin-bottom: 15px;
    }
    .solution dl dd h5,
    .solution dl dd .more {
        text-align: center;
    }
    .s_ctn .pro_l li {
        width: 98%;
    }
    .s_ctn .pro_l li img {
        width: 300px;
        height: 172px;
    }
    .service_a dt,
    .service_a dt img {
        width: 310px;
        height: 180px;
    }
    .service_a dd .more {
        text-align: center;
    }
    .sv_l li {
        width: 48%;
        height: 180px;
    }
    .sv_l li b {
        font-size: 18px;
    }
}