@media screen and (max-width:1230px) {
    .head, .wrap { width: 960px; }
    .head .nav_m { width: 700px; }
    .head .nav li { margin-left: 5px; }
    .head .nav li a { padding: 0 11px; }
    .i_service li { width: 231px; padding: 15px; }
    .i_service li .tu { height: 130px; line-height: 130px; }
    .i_service li .tu img { width: 110px; height: 110px; }
    .i_service li .title { font-size: 24px; }
    .works dl dt, .works dl dt img, .works dl dt .des { width: 480px; height: 420px; }
    .works dl dd { width: 480px; }
    .works dl dd ul li, .works dl dd ul li img, .works dl dd ul li .des { width: 240px; height: 210px; }
    .works dl dd ul li .des .ctn { margin: 5px 0 10px; }
    .works dl dd ul li .des .title { height: 35px; line-height: 35px; font-size: 20px; }
    .works dl dd { height: auto; }
    .i_about dt { width: 380px; }
    .i_about dd { width: 550px; }
    .i_about dd h6 { font-size: 32px; height: 35px; line-height: 35px; }
    .i_about dd .tip { padding: 5px 0; }
    .i_news_m li, .news li { width: 306px; margin-right: 21px; }
    .i_customer li { width: 188px; height: auto; }
    .i_customer li img { width: 188px; height: 90px; }
    .f_zx p { width: 715px; font-size: 17px; }
    .foot li { width: 300px; }
    .foot li.f_b { width: 350px; }
    .f_zx a { width: 180px; }
    .works dl dt .des .ctn { max-height: 155px; }
    .s_works ul li, .s_works ul li img { width: 320px; height: 272px; }
    .s_works ul li .des { top: 202px; }
    .service ul li { float: left; width: 312px; height: auto; }
    .service ul li img { width: 100%; height: 160px; }
    .customer ul li { width: 318px; }
    .news li .tu img { height: 92px; }
    .about .tabBox .tabNav { margin-bottom: 20px; }
}

@media screen and (max-width:990px) {
    .head, .wrap { width: 740px; }
    .head .logo { width: 200px; height: auto; }
    .head .nav_m { width: 100%; position: absolute; left: 0; top: 50px; }
    .nav_m .n_icon { display: block; font-size: 16px; }
    .head .nav_m .nav { width: 100%; background: #FFF; position: absolute; left: 0; top: 40px; z-index: 99999; display: none; padding: 5px 0; }
    .head .nav li a { margin-top: 0; padding: 0 16px; }

    .i_service li { margin-right: 8px; width: 179px; }
    .i_service li .title { height: 50px; line-height: 50px; font-size: 22px; }
    .i_service li .tu img { width: 90px; height: 90px; }
    .i_service li .tu { height: 110px; line-height: 110px; }
    .works dl dt, .works dl dt img, .works dl dt .des { width: 370px; height: 324px; }
    .works dl dd { width: 370px; }
    .works dl dd ul li, .works dl dd ul li img, .works dl dd ul li .des { width: 185px; height: 162px; }
    .works dl dd ul li .des .ctn { margin: 5px 0 10px; }
    .works dl dd ul li .des .title { height: 35px; line-height: 35px; font-size: 18px; }
    .works dl dt .des { padding: 20px 25px; }
    .works dl dt .des .title { height: 40px; line-height: 40px; font-size: 24px; }
    .works dl dt .des .ctn { max-height: 155px; }
    .works dl dd ul li .des { padding: 5px 10px; }
    .works dl dd ul li .des .ctn { max-height: 65px; line-height: 145%; }
    .i_about dt { width: 320px; }
    .i_about dd { width: 400px; }
    .i_about dd p { max-height: 110px; overflow: hidden; }
    .i_news_m li, .news li { width: 240px; margin-right: 10px; }
    .i_news_m li .title, .news li .title { font-size: 15px; }
    .i_customer li { width: 144px; }
    .i_customer li img { width: 144px; height: 68px; }
    .f_zx p { width: 560px; font-size: 16px; }
    .f_zx a { width: 150px; font-size: 20px; height: 50px; line-height: 50px; }
    .foot li .f_logo img { width: 200px; height: auto; }
    .foot li { width: 50%; }
    .s_works ul li, .s_works ul li img { width: 246px; height: 209px; }
    .s_works ul li .des { top: 139px; }
    .service ul li { width: 242px; }
    .service ul li img { width: 100%; height: 124px; }
    .customer ul li { width: 244px; }
    .news li .tu img { height: 72px; }
    .book { width: 100%; }
}

@media screen and (max-width:770px) {
    .head, .wrap { width: 480px; }
    .i_service li { margin-right: 10px; width: 235px; margin-bottom: 10px; }
    .i_service li:nth-child(2n) { margin-right: 0; }
    .head .nav li { width: 100%; text-align: right; margin: 0; }
    .head .nav li a { width: 100%; padding: 0 15px 0; }
    .head .nav li.now a, .head .nav li a:hover { background: none; color: #0072B8; }
    .i_name { text-align: center; width: 100%; }
    .i_m { width: 100%; margin: 0 auto; }
    .i_m li { width: 100%; margin-top: 20px; }
    .works dl dt, .works dl dt img, .works dl dt .des { width: 480px; height: 419px; }
    .works dl dt .des, .works dl dd ul li .des { opacity: 1; filter: alpha(opacity=100); }
    .works dl dt .des .ctn, .works dl dt .des .d_more, .works dl dd ul li .des .ctn, .works dl dd ul li .des .d_more { display: none; }
    .works dl dt .des { height: 80px; }
    .works dl dd ul li, .works dl dd ul li img, .works dl dd ul li .des { width: 240px; height: 210px; }
    .works dl dd ul li .des { height: 60px; }
    .works dl dd, .works dl dt { width: 100%; }
    .i_about dt, .i_about dd { width: 100%; }
    .i_about dd { margin-top: 20px; }
    .tabBox .tabNav li { width: 120px; }
    .i_news_m li, .news li { width: 235px; margin-right: 10px !important; margin-bottom: 0; margin-top: 30px; }
    .i_news_m li:nth-child(2n), .news li:nth-child(2n) { margin-right: 0 !important; }
    .i_customer li { width: 116px; margin-right: 4px !important; margin-bottom: 4px; }
    .i_customer li:nth-child(4n) { margin-right: 0 !important; }
    .i_customer li img { width: 116px; height: 54px; }
    .f_zx p { width: 100%; }
    .f_zx a { position: static; margin-top: 15px; }
    .about .tabBox .tabNav { text-align: left; }
    .about .tabBox .tabNav li { margin: 5px 10px 5px 0; padding: 0 13px; }
    .s_works ul li, .s_works ul li img { width: 480px; height: 406px; }
    .s_works ul li .des { top: 0; left: 1px; }
    .s_works ul li { border: 1px solid #eee; }
    .service ul li { width: 100%; margin: 0 0 10px; }
    .service ul li img { width: 100%; height: auto; }
    .customer ul li { margin-right: 2px !important; width: 239px; }
    .customer ul li:nth-child(2n) { margin-right: 0 !important; }
    .news li .tu img { height: 70px; }
    .pages { padding-top: 35px; }
    .book li { width: 100%; }
    .fn_bg { width: 100%; min-width: 1px; }
    .f_nav { width: 100%; }
    .f_nav li { width: 50%; float: left; margin: 0; text-align: center; }
    .foot { width: 100%; min-width: 1px; }
    .f_bg { width: 100%; min-width: 1px; }
    .ct .ct_l { width: 100%; }
    .scd { width:100%;}
    .ct { width:95%;margin:0 auto;}
    .scd_l {display:none;}
    .scd .scd_r { width:100%;margin:0 auto;padding:2%;}
    .scd .scd_r .s_ctn {padding:0;}
    fieldset, img { width:100%;}
}

@media screen and (max-width:510px) {
    .head, .wrap { width: 320px; }
    .i_service li { width: 155px; }
    .works dl dt .des, .works dl dd ul li .des { width: 100%; padding: 10px; height: auto; }
    .works dl dt, .works dl dt img, .works dl dd ul li, .works dl dd ul li img { width: 320px; height: 280px; }
    .works dl dt .des .title { font-size: 18px; }
    .tabBox .tabNav li { width: 90px; margin: 0 3px; }
    .i_customer li { margin-right: 4px !important; width: 158px; }
    .i_customer li:nth-child(2n) { margin-right: 0 !important; }
    .i_customer li img { width: 158px; height: 73px; }
    .foot li { width: 100%; padding-right: 0; }
    .foot li.f_a, .foot li.f_b { padding-top: 40px; }
    .foot li.f_b .code { top: 45px; }
    .s_works ul li, .s_works ul li img { width: 320px; height: 270px; }
    .customer ul li { margin-right: 2px !important; width: 159px; }
    .customer ul li .tu img { width: 150px; height: 69px; }
    .customer ul li .tu { height: 80px; line-height: 80px; }
    .i_news_m li, .news li { width: 100%; margin-right: 0 !important; }
    .news li .tu img { width: 100%; height: auto; }
    .book li { padding-left: 85px; padding-right: 10px; margin-bottom: 20px; }
    .book li i { right: 0; }
    .book li.btn { margin-bottom: 0; }
    .book li.btn input { margin-top: 0; }
}