* {
    padding: 0;
    margin: 0;
    word-break: break-all;
}

body {
    font: 14px "Microsoft Yahei","Hiragino Sans GB","Heiti SC","WenQuanYi Micro Hei",sans-serif;
    background: #fff;
    width: 100%;
}

p, h1, h2, h3, h4, h5, h6, ul, li, ol {
    padding: 0;
    margin: 0;
}

ul, dl, dt, dd, ol, li {
    list-style: none;
}

a {
    text-decoration: none;
}

.link {
    position: relative;
    display: block;
    width: 100%;
    height: 100%;
}

img {
    border: none;
}

@media (max-width: 1200px) {
    body, header {
        width: 1300px;
    }
}
.common {
    width: 1200px;
    margin: 0 auto;
}

.cmain {
    width: 1200px;
    margin: 0 auto;
}

.main img {
    max-width: 100%;
}

.cmain img {
    max-width: 100%;
}
.HeaderBot {
    width: 100%;
    height: 80px;
    box-shadow: 3px 10px 10px #44a8f2;
    background: linear-gradient(to right, #fff 45%, #44a8f2);
    font-weight: bolder;
    text-shadow:0px 0px 3px #44a8f2;
    font-size: 1.2em;
}

.logo {
    float: left;
    /*margin-top: 15px;*/
}

.headermenu {
    float: right;
    margin-top: 20px;
    position: relative;
    left: 10px;
}

    .headermenu ul li a {
        display: block;
        color: black;
    }

    .headermenu ul li {
        float: left;
        width: auto;
	margin-left: 20px;
	font-size: 16px;
        height: 60px;
        text-align: center;
        line-height: 60px;
    }

    .headermenu ul .active a {
        display: block;
        color: #44a8f2;
    }

    .headermenu ul li a:hover {
        color: #44a8f2;
    }

    .headermenu ul li ul {
        width: 130px;
        position: absolute;
        z-index: 111;
        background: #00000078;
        height: auto;
        display: none;
        font-size: 12px;
    }

        .headermenu ul li ul li {
            height: 30px;
            width: 130px;
            float: left;
            line-height: 30px;
            text-align: center;
        }

            .headermenu ul li ul li a {
                color: white;
            }

            .headermenu ul li ul li:hover a {
                background: #44a8f2;
                color: white;
            }

    .headermenu ul .menu_li:hover .menu_ul_li_ul {
        display: block;
    }

        .headermenu ul .menu_li:hover .menu_ul_li_ul li a {
            color: white;
        }

/*  banner  */
.slides-box {
    width: 100%;
    height: 750px;
    margin: 0 auto;
    overflow: hidden;
}

.slides {
    position: relative;
    height: 700px;
    width: 100%;
    margin: auto;
    float: left;
}

    .slides li {
        position: absolute;
        width: 100%;
        height: 100%;
    }

        .slides li img {
            display: block;
            width: 100%;
            margin: auto;
        }

.prev, .next {
    position: absolute;
    z-index: 99;
    top: 50%;
    margin-top: -40px;
    left: 0;
    height: 70px;
    width: 30px;
    color: #fff;
    cursor: pointer;
    background-color: #000;
    opacity: .5;
}

    .prev:hover, .next:hover {
        opacity: .7;
    }

.prev {
    background-image: url("data:image/gif;base64,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");
}

.next {
    left: auto;
    right: 0;
    background-image: url("data:image/gif;base64,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");
}

.pagination {
    position: absolute;
    bottom: 5px;
    z-index: 99;
}

    .pagination li {
        padding: 5px 3px;
        float: left;
    }

        .pagination li a {
            display: block;
            width: 25px;
            height: 25px;
            line-height: 25px;
            border-radius: 25px;
            background: #000;
            color: #fff;
            text-align: center;
            font-family: Arial;
            text-decoration: none;
        }

    .pagination .active {
        background: red;
    }

.ourscope {
    width: 1000px;
    height: 380px;
    margin: 0 auto;
}

    .ourscope h2 {
        text-align: center;
        padding: 50px 0;
    }
    .ourscope ul li {
        width: 166px;
        text-align: center;
        float: left;
    }
        .ourscope ul li .img1:hover {
            cursor:pointer;
        }
         .ourscope ul li .img0:hover {
            cursor:pointer;
        }
        .ourscope ul li .img0 {
        display:none;
        }
    .ourscope img {
        width: 120px;padding-bottom:20px;
    }

.ouradvantage {
    width: 960px;
    margin: 0 auto;
    height: 480px;
}

    .ouradvantage h2 {
        text-align: center;
        padding: 50px 0;
    }

    .ouradvantage ul li {
        float: left;
        width: 320px;
        text-align: center;
        font-size: 20px;/*border:1px solid #b3afaf;margin-left:10px;border-radius:8px;*/
    }
.advantage_img {
        width:120px;height:120px;margin:0 auto;
}
.advantage_img img{
    width:120px;
}.ouradvantage ul li:hover img{
   transform:scale(0.6);
}
.ouradvantage ul li:hover {
cursor:pointer;
}
 .ouradvantage ul li:hover .advantage_img{
  width:120px;height:120px;border-radius:50%;background:#d7e6f1;margin:0 auto;
}
.ouradvantage ul li p {
display:inline-block;padding:30px;
}
 .advantage_img img{ transition: all .3s;}
        .ouradvantage ul li span {
            display: block;
            font-size: 12px;
            text-align: center;
            width: 260px;
            margin: 0 auto;
            line-height:25px;
        }
.ourcustomer {
width:1200px;margin:0 auto;height:620px;overflow: hidden;
}
        .ourcustomer  h2 {
        text-align: center;
        padding: 30px 0;
    }
    .ourcustomer_ul ul {
    margin:0 auto;
    }
.ourcustomer_detail {
width:1200px;height:520px;margin:0 auto;
}
.ourcustomer_ul {
height:370px;margin:0 auto;width:1200px;
}
.mr_frBtnL {  cursor: pointer; display: inline; }
.mr_frBtnR { cursor: pointer; }
.ourcustomer_ul ul li {
float:left;width:260px;height:370px;text-align:center;display: inline;margin-left:20px;overflow:hidden;
}
    .ourcustomer_ul ul li a {display:block;
    margin-top:2px;
    }
    .ourcustomer_ul ul li img {
    width:255px;height:180px;display: block;
    }
.ourcustomer_ul ul li a:hover  img{

transform:scale(1.2);
}
 .ourcustomer_ul  img{ transition: all .3s;}
.footer_main {
width:100%;background:url(../image/footer.jpg) no-repeat center;height:320px;
}

.footer_info {
    width:670px;margin:0 auto;height:30px;
}
.footer_info li{
float:left;width:110px;text-align:center;height:20px;line-height:20px; border-right:1px solid #d7d7d7;
}
    .footer_info li a {
    display:block;color:#44a8f2;
    }
        .footer_main ul li a:hover {
        color:white;
        }
        .footer_contract{
    width:330px;margin:20px auto;height:120px;
}
.footer_contract ul li {
width:330px;color:white;height:30px;text-align:left;
}
    .footer_contract ul li img {
        position:relative;top:5px;
    padding:2px 8px;
    }
.footer {
    width: 100%;
    height: 60px;
    color: white;
    text-align: center;
    line-height: 60px;
}
.header {
    position: fixed;
    left: 0;
    top: 0;
    width: 100%;
    z-index: 100;
}
/*关于恒创*/
.mainbg {
    width: 100%;
    height: 300px;
    overflow: hidden;
    text-align: center;
}
.mainbg>img {
    margin-top: 80px;
    width: 70%;
    height: 200px;
}
#about_nav {
    width: 340px;
    height: 45px;
    margin: 0 auto;
}

    #about_nav .cur {
        background: #44a8f2;
    }

    #about_nav a {
        background: #b3afaf;
        display: inline-block;
        width: 100px;
        height: 40px;
        line-height: 40px;
        text-align: center;
        border: 5px solid white;
        color: white;
        cursor: pointer;
    }

.main_content {
    margin: 40px 0;
    text-align: center;
}

    .main_content .txt1 {
        font-size: 24px;
        color: #383838;
    }

    .main_content .txt2 {
        color: #999999;
        line-height: 30px;
    }

    .main_content .machine > div {
        display: inline-block;
        width: 40%;
        margin: 2em auto 3em auto;
    }
    .main_content .hen {
        width: 150px;
        height: 2px;
        background-color: #44a8f2;
        margin-top: 10px;
        margin: 0 auto;
    }

.about_main {
    width: 1050px;
    margin: 0 auto;
    height: 420px;
}

.main_des {
    float: left;
    width: 460px;
    height: 420px;
    overflow: hidden;
}

    .main_des p {
        width: 460px;
        overflow: hidden;
        text-align: justify;
        text-indent: 2em;
        line-height: 30px;
    }

.main_img {
    float: right;
    height: 300px;
    width: 530px;
    overflow: hidden;
}

    .main_img img {
        width: 100%;
    }

.main_culture {
    float: right;
    width: 520px;
    height: 380px;
    overflow: hidden;
    margin-top: 20px;
}

    .main_culture p {
        text-align: justify;
        line-height: 30px;
    }
/*--------------服务支持--------------------*/

.main_content_bg {
    background: #44a8f22e;
}

#servicesupport_nav {
    width: 600px;
    height: 50px;
    margin: 20px auto;
}

    #servicesupport_nav .cur {
        background: #44a8f2;
    }

    #servicesupport_nav a {
        background: #b3afaf;
        display: inline-block;
        width: 100px;
        height: 40px;
        line-height: 40px;
        text-align: center;
        border: 5px solid white;
        color: white;
        cursor: pointer;
    }

.workflow {
    width: 300px;
    margin: 0 auto;
}

.lay_content, .apply {
    width: 800px;
    margin: 0 auto;
}
    .apply p {
   display:block;line-height:30px;
    }
    .apply a {
    display:block;color:#3f73bd;padding:5px 0;text-decoration:underline;
    }
    .lay_content a {
        display: block;
        height: 25px;
        line-height: 25px;
        /*text-decoration: underline;*/
    }

.answer,.sample {
    width: 800px;
    margin: 0 auto;
    height: 600px;
}

.answer_content {
    width: 400px;
    float: left;
    height: 260px;
}

.question {
    float: right;
    width: 220px;
    height: 260px;
}

.answer p,.sample p {
    line-height: 25px;
}

.common_icon {
    width: 60px;
    height: 60px;
}

    .common_icon img {
        width: 60px;
        height: 60px;
    }
/*-------------联系我们------------------------*/
.contract_content {
    width: 760px;
    height: 260px;
    margin: 20px auto;
}

#dituContent {
    width: 900px;
    height: 450px;
    margin: 20px auto;
    border: #ccc solid 1px;
}

.contract_content ul {
    margin: 0 auto;
}

    .contract_content ul li {
        color: #808080;
        float: left;
        width: 220px;
        height: 260px;
        margin: 0 15px;
        text-align: center;
        border-radius: 8px;
        box-shadow: 2px 1px 20px 2px #b3afaf;
    }

.contract_content img {
    margin-top: 30px;
}

.contract_content p {
    display: block;
    margin-top: 30px;
    width: 210px;
    line-height: 30px;
}
/*业务范围*/
.scope_look {
    width: 1000px;
    margin: 20px auto;
    height: 400px;
}

    .scope_look ul li {
        float: left;
        height: 170px;
        width: 320px;
        text-align: center;
        margin: 0 0 20px 10px;
        overflow: hidden;
    }

        .scope_look ul li:nth-child(1) {
            animation-delay: 0.1s;
        }

        .scope_look ul li:nth-child(2) {
            animation-delay: 0.2s;
        }

        .scope_look ul li:nth-child(3) {
            animation-delay: 0.3s;
        }

        .scope_look ul li:nth-child(4) {
            animation-delay: 0.4s;
        }

        .scope_look ul li:nth-child(5) {
            animation-delay: 0.5s;
        }

        .scope_look ul li:nth-child(6) {
            animation-delay: 0.6s;
        }
.scope_look ul li .scope_img {
overflow:hidden;
}
 .scope_img img{width: 100%; transition: all .3s;}
        .scope_look ul li:hover  img {
            transform: scale(1.2);
            -webkit-transform: scale(1.2);
            -moz-transform: scale(1.2);
            -ms-transform: scale(1.2);
            -o-transform: scale(1.2);
        }

.lookdetail {
    width: 320px;
    height: 170px;
    background: rgba(0,0,0,.5);
    position: relative;
    left: 0;
    top: -174px;
    color: white;
    text-align: center;
}

    .lookdetail p {
        line-height: 80px;
        font-size: 18px;
    }

    .lookdetail a {
        width: 100px;
        height: 30px;
        line-height: 30px;
        border: 1px solid white;
        text-align: center;
        display: block;
        margin: 0 auto;
        color: white;
    }

        .lookdetail a:hover {
            cursor: pointer;
            color: #44a8f2;
        }
/*业务范围通用导航*/
.scope_menunav {
    height: 30px;
    line-height: 30px;
}

    .scope_menunav ul li {
        float: left;
        margin-left: 5px;
    }

        .scope_menunav ul li a {
            display: block;
            color: black;
        }

            .scope_menunav ul li a:hover {
                color: #44a8f2;
            }
/*化学品危险特性分类鉴别报告*/
.report_title {
    margin: 10px auto;
    text-align: center;
    width: 900px;
    font-size: 18px;
}

.report {
    margin: 10px auto;
    line-height: 30px;
    text-indent: 2em;
    width: 900px;
}

.report.evaluation-page {
    text-indent: 0;
}

    .report.evaluation-page > p {
        text-indent: 2em;
        margin: 0.65em 0;
    }

    .report.evaluation-page h3 {
        text-indent: 0;
        font-size: 17px;
        font-weight: bold;
        margin: 1.4em 0 0.6em;
    }

    .report.evaluation-page ul {
        margin: 0.5em 0 1em;
        padding-left: 2.2em;
        line-height: 30px;
    }

    .report.evaluation-page ul li {
        list-style: disc outside;
    }

    .report.evaluation-page .evaluation-img-row {
        display: flex;
        flex-wrap: wrap;
        justify-content: space-between;
        gap: 12px;
        margin: 24px 0;
        text-indent: 0;
    }

    .report.evaluation-page .evaluation-img-row img {
        flex: 1 1 28%;
        min-width: 200px;
        max-width: 100%;
        height: auto;
        vertical-align: top;
    }

    .report.evaluation-page .evaluation-img-full {
        margin: 20px 0 28px;
        text-indent: 0;
        text-align: center;
    }

    .report.evaluation-page .evaluation-img-full img {
        max-width: 100%;
        height: auto;
        vertical-align: top;
    }

    .report.evaluation-page .evaluation-contact {
        text-indent: 0;
        margin-top: 1.2em;
    }

.report_des {
    width: 540px;
    text-align: justify;
    margin: 0 auto;
}

.report_test {
    width: 700px;
    margin: 0 auto;
}

    .report_test ul {
        height: 320px;
    }

        .report_test ul li img {
            text-align: left;
        }

        .report_test ul li {
            width: 120px;
            height: 100px;
            float: left;
            text-align: center;
        }

            .report_test ul li:nth-child(1) {
                animation-delay: 0.1s;
            }

            .report_test ul li:nth-child(2) {
                animation-delay: 0.2s;
            }

            .report_test ul li:nth-child(3) {
                animation-delay: 0.3s;
            }

            .report_test ul li:nth-child(4) {
                animation-delay: 0.4s;
            }

            .report_test ul li:nth-child(5) {
                animation-delay: 0.5s;
            }

            .report_test ul li:nth-child(6) {
                animation-delay: 0.6s;
            }

            .report_test ul li:nth-child(7) {
                animation-delay: 0.7s;
            }

            .report_test ul li:nth-child(8) {
                animation-delay: 0.8s;
            }

            .report_test ul li:nth-child(9) {
                animation-delay: 0.9s;
            }

            .report_test ul li:nth-child(10) {
                animation-delay: 1s;
            }

            .report_test ul li:nth-child(11) {
                animation-delay: 1.1s;
            }

            .report_test ul li:nth-child(12) {
                animation-delay: 1.2s;
            }

            .report_test ul li:nth-child(13) {
                animation-delay: 1.3s;
            }

            .report_test ul li:nth-child(14) {
                animation-delay: 1.4s;
            }

            .report_test ul li:nth-child(15) {
                animation-delay: 1.5s;
            }
/*行业新闻*/
.news_deatil ul li {
    height: 30px;
    line-height: 30px;
    border-bottom: 1px dotted #cac8c8;
}

    .news_deatil ul li a {
        color: black;
    }

    .news_deatil ul li p {
        display: inline-block;
        width: 20px;
        color: #44a8f2;
    }

    .news_deatil ul li span {
        display: inline-block;
        float: right;
        width: 260px;
        text-align: left;
    }

    .news_deatil ul li a:hover {
        color: #44a8f2;
        cursor: pointer;
    }
/*危险化学品安全管理条例*/

.news_deatil_content h2 {
    text-align: center;
    line-height: 30px;
}

.news_deatil_content span {
    display: block;
    text-align: center;
    line-height: 30px;
    font-size: 14px;
}

.news_deatil_content p {
    display: block;
    line-height: 28px;
    text-indent: 2em;
    color: #1b1a1a;
    text-align: justify;
    width: 900px;
    margin: 0 auto;
}

.news_deatil_content b {
    display: block;
    width: 900px;
    margin: 10px auto;
    text-indent: 2em;
}