@media only screen and (max-width: 640px) {
    .center_box {
        width: 100%;
    }

    .main_title {
        padding-top: 32px;
        padding-bottom: 0;
        margin: 0 auto;
        font-size: 18px;
        letter-spacing: normal;
    }

    .min_title {
        width: 155px !important;
    }

    .subtitle {
        margin-top: 15px;
    }

    .down_arrow {
        width: 35px;
        height: 23px;
        display: block;
        margin: 15px auto 20px;
    }

    .subhead {
        width: 92%;
        margin: 0 auto;
        font-size: 12px;
        display: block;
        text-align: center;
        letter-spacing: normal;
        margin-top: 15px;
        margin-bottom: 15px;
    }

    .main_intro {
        font-size: 12px;
    }

    .party2_list span {
        font-size: 12px;
        color: #000;
        display: block;
        width: 92px;
        height: 30px;
        line-height: 30px;
        background: rgba(255, 255, 255, 0.7);
        text-align: center;
        margin: 0 auto;
    }

    .party2_list {
        margin-top: 18px !important;
    }

    .party4 {
        background: url(../i/p4_m.jpg) center center no-repeat;
        background-size: cover;
        width: 100%;
        height: 590px;
        position: relative;
        padding-bottom: 20px;
    }
    .party6{
        height: 590px;
    }



    .party7 {
        height: 480px;
    }

    .party8 {
        background: url(../i/p8_m.png) center center no-repeat;
        width: 100%;
        height: 540px;
        background-size: 100% 540px;
        position: relative;
    }

    .cursor {
        position: absolute;
        width: 180px;
        height: 34px;
        line-height: 34px;
        border-radius: 30px;
        background: rgba(255, 255, 255, 0.3);
        left: 0;
        top: 377px;
        right: 0;
        margin: auto;
        font-size: 16px;
        color: #ffffff;
        padding-left: 36px;
        cursor: pointer;
    }

    .tel {
        position: absolute;
        right: 2%;
        margin-top: 5px;
    }

    .tel span {
        font-size: 12px;
        color: #fff;
        line-height: 19px;
        float: left;
        width: 100px;
        margin-right: 10px;
    }

    .tel b {
        font-size: 12px;
        line-height: 19px;
        color: #fff;
        float: left;
    }

    .cursor span {
        float: right;
        display: block;
        width: 50px;
        height: 34px;
        line-height: 34px;
        border-radius: 30px;
        background: rgba(255, 255, 255, 0.3);
        text-align: center;
        right: 0px;
        top: 0px;
        position: absolute;
    }

    .cursor span img {
        margin-left: 16px;
        margin-top: 6px;
    }

    .case_list li img {
        width: 37px;
        height: 37px;
        margin-top: 47px;
    }

    .nav_menu {
        display: none;
    }

    .one_list li {
        width: 100% !important;
        font-size: 12px;
        text-align: center !important;
        margin-bottom: 5px;
    }

    .one_list li span {
        font-size: 15px;
        color: #e33830;
        margin-right: 5px;
    }

    .am-offcanvas-bar .am-nav > li > a {
        color: #ccc;
        border-radius: 0;
        border-top: 1px solid rgba(0, 0, 0, .3);
        box-shadow: inset 0 1px 0 rgba(255, 255, 255, .05);
        font-size: 14px;
    }

    .list {
        display: none;
    }

    .link {
        display: none;
    }

    .border {
        display: none;
    }

    .core_technology p {
        margin-top: 12px;
    }

    .tech_list {
        margin-top: 13px !important;
    }

    .case_sub {
        width: 79%;
        font-size: 11px;
        line-height: 16px;
        text-align: center;
        margin-top: 20px;
        margin-bottom: 30px;
        margin-left: auto;
        margin-right: auto;
    }

    .img1 {
        width: 38px;
    }

    .img2 {
        width: 75px;
    }

    .case_list li img {
        width: 37px;
        height: 37px;
        margin-top: 18px;
    }

    .case_list li span {
        display: block;
        font-size: 1.2rem;
        color: #757575;
        margin-top: 12px;
    }

    .red_b {
        display: none;
    }

    .red_a {
        width: 78%;
        height: 174px;
        background: rgba(231, 31, 25, 0.7);
        position: absolute;
        left: 0;
        right: 0;
        top: 0;
        bottom: 0;
        margin: auto;
        display: block;
    }

    .red_a p {
        font-size: 14px;
        margin-top: 0;
        line-height: 20px;
    }

    .red_a span {
        display: block;
        font-size: 15px;
        color: #fff;
        margin-top: 20px;
        margin-bottom: 15px;
        text-align: center;
    }

    .product_list {
        margin-top: 35px !important;
    }

    .product_list li {
        margin-bottom: 10px;
    }

    .left_media {
        width: 52%;
    }

    .right_media {
        width: 52%;
    }

    .am-g-fixed {
        width: 100% !important;
        position: relative;
    }

    .c_right {
        float: left;
        color: #747474;
        line-height: 20px;
        margin-top: 0;
        margin-left: 0;
        font-size: 16px;
    }

    .c_text {
        text-align: justify;
        margin-top: 20px;
    }

    .code_box {
        margin: 15px 0;
    }

    .more_button {
        margin-top: 14px;
    }

    .right_media h5 {
        font-size: 16px;
    }

    .left_media h5 {
        font-size: 16px;
    }

    .footer_box {
        background-color: #f6f6f6;
    }

    .footer_text {
        background-color: #f6f6f6;
        color: #747474;
        border-top: 1px solid #747474;
    }
    .free_tel{
        display: none;
    }
    .p6_title{
        margin-bottom: 15px!important;
    }

    .party3{
        padding-bottom: 30px;
    }
    .party2_list{
        padding-bottom: 40px!important;
    }

    .btn_box img {
        width: 17px;
        float: left;
        margin-top: 5px;
        margin-left: 16px;
        margin-right: 0;
    }

    .right_media .p_text {
        font-size: 14px;
    }

    .left_media .p_text {
        font-size: 14px;
    }

    .pro_info {
        width: 86%;
    }

    .version_list span {
        height: 26px;
        line-height: 26px;
    }

    .version_list li {
        margin-bottom: 10px;
    }
    .padd{
        padding: 0;
    }

    .main_intro_m{
        width: 90%;
        text-align: justify;
    }
    .img4_p{
        width: 100%;
    }
    .mobile_img{
        width: 100%;
    }
    .code{
        width: 85px;
        height: 85px;
        float: left;

    }
    .btn {
        float: right;
       margin-left: 0;
        margin-right: 0;
    }

    .btn_box {
        width: 130px;
        height: 28px;
        text-align: center;
        line-height: 28px;
        border-radius: 36px;
        font-size: 10px;
        color: #747474;
        border: 1px solid #8e8e8e;
    }
    .mar_top{
        margin-top: 8px!important;
    }
    .code_box{
        width: 226px;
        float: inherit!important;
        overflow: hidden;
        margin-right: auto!important;
        margin-left: auto!important;
    }
    .party9{
        padding: 0!important;
    }
    .party9 img{
        width: 100%;
    }
}

.am-btn-success {
    color: #fff;
    background-color: #4d4d4d;
    border: 1px solid #4d4d4d;
}

.my-button {
    position: fixed;
    top: 0;
    right: 0;
    border-radius: 0;
}

.pad {
    padding-left: 0 !important;
    padding-right: 0 !important;
}

.am-btn-success:focus, .am-btn-success:hover {
    background-color: #4d4d4d;
    border-color: #4d4d4d;
}

.am-g-fixed {
    max-width: 1280px !important;
    margin: auto !important;
}

.now_tel {
    font-size: 30px;
    color: #d50029;
    float: right;
    width: 19%;
}

.nav_menu li {
    width: 82px;
}
.main_title_p,.subhead_p,.main_title_p,.pc_box,.pc_img{
    display: block;
}
.main_title_m,.subhead_m,.main_title_m,.m_box,.mobile_img{
    display: none
}

@media(max-width:768px) {
    .footer_text {
        margin-bottom: 50px;
    }
    .main_title_p,.subhead_p,.main_title_p,.pc_box,.pc_img{
        display: none;
    }
    .main_title_m,.subhead_m,.main_title_m,.m_box,.mobile_img{
        display: block;
    }
    .party8{
        display: none;
    }
    .main_intro{
        letter-spacing: unset;
    }
}