body{padding: 0;margin: 0;font-family: microsoft yahei;}
h1,h2,h3,p{padding: 0;margin: 0;font-weight: normal;}
.eco-tech-banner01{background:url(../images/2019eco_01.jpg) center no-repeat;height: 700px;width: 100%;text-align: center;}
.tk_aivi_box01{background:url(../images/aivi_02.jpg) center no-repeat;height: 450px;width: 100%;text-align: center;}
.tk_aivi_box02{background:url(../images/aivi_04.jpg) center no-repeat;height: 450px;width: 100%;text-align: center;}
.tk_aivi_box03{background:url(../images/aivi_07.jpg) center no-repeat;height: 692px;width: 100%;text-align: center;}
.tk_aivi_box04{background:url(../images/aivi_09.jpg) center no-repeat;height: 692px;width: 100%;text-align: center;}

.tk_aivi_main{padding-top:150px;}
.tk_aivi_main h1{font-size: 46px;color: #fff;position: relative;}
.tk_aivi_main h1 span{font-size: 20px;position: absolute;}
.tk_aivi_main h2{font-size: 28px; color: #ccc;margin-bottom: 10px;}
.tk_aivi_textbox{text-align: center;color: #666;font-size: 18px;line-height: 180%;padding-top: 100px;padding-bottom: 100px}
.tk_aivi_textbox h2{color: #333;margin-bottom: 40px;font-size: 32px;}

.tk_smart_main{padding-top:150px;}
.tk_smart_main h1{font-size: 46px;color: #000;position: relative;}
.tk_smart_main h1 span{font-size: 20px;position: absolute;}
.tk_smart_main h2{font-size: 28px; color: #666;margin-bottom: 10px;}
.tk_smart_textbox{text-align: center;color: #666;font-size: 18px;line-height: 180%;padding-top: 100px;padding-bottom: 100px}
.tk_smart_textbox h2{color: #333;margin-bottom: 40px;font-size: 32px;}

.tk_lanjing_main{padding-top:150px;}
.tk_lanjing_main h1{font-size: 46px;color: #fff;position: relative;}
.tk_lanjing_main h1 span{font-size: 20px;position: absolute;}
.tk_lanjing_main h2{font-size: 28px; color: #ced3da;margin-bottom: 10px;}
.tk_lanjing_textbox{text-align: center;color: #666;font-size: 18px;line-height: 180%;padding-top: 100px;padding-bottom: 100px}
.tk_lanjing_textbox h2{color: #333;margin-bottom: 40px;font-size: 32px;}

.tk_app_main{padding-top:150px;}
.tk_app_main h1{font-size: 46px;color: #fff;position: relative;}
.tk_app_main h1 span{font-size: 20px;position: absolute;}
.tk_app_main h2{font-size: 28px; color: #fff;margin-bottom: 10px;}
.tk_app_textbox{text-align: center;color: #666;font-size: 18px;line-height: 180%;padding-top: 100px;padding-bottom: 100px}
.tk_app_textbox h2{color: #333;margin-bottom: 40px;font-size: 32px;}


.eco-tech-banner02{background:url(../images/2019eco_02.jpg) center no-repeat;height: 700px;width: 100%;text-align: center;}
.tk_smart_box01{background:url(../images/smart_02.jpg) center no-repeat;height: 450px;width: 100%;text-align: center;}
.tk_smart_box02{background:url(../images/smart_04.jpg) center no-repeat;height: 656px;width: 100%;text-align: center;}
.tk_smart_box03{background:url(../images/smart_06.jpg) center no-repeat;height: 760px;width: 100%;text-align: center;}
.tk_smart_box04{background:url(../images/smart_08.jpg) center no-repeat;height: 760px;width: 100%;text-align: center;}


.eco-tech-banner03{background:url(../images/2019eco_03.jpg) center no-repeat;height: 700px;width: 100%;text-align: center;}

.tk_lanjing_box01{background:url(../images/lanjing_02.jpg) center no-repeat;height: 450px;width: 100%;text-align: center;}
.tk_lanjing_box02{background:url(../images/lanjing_04.jpg) center no-repeat;height: 656px;width: 100%;text-align: center;}
.tk_lanjing_box03{background:url(../images/lanjing_06.jpg) center no-repeat;height: 760px;width: 100%;text-align: center;}
.tk_lanjing_box04{background:url(../images/lanjing_08.jpg) center no-repeat;height: 760px;width: 100%;text-align: center;}


.eco-tech-banner04{background:url(../images/2019eco_04.jpg) center no-repeat;height: 699px;width: 100%;text-align: center;}

.tk_app_box01{background:url(../images/app_02.jpg) center no-repeat;height: 450px;width: 100%;text-align: center;}
.tk_app_box02{background:url(../images/app_04.jpg) center no-repeat;height: 656px;width: 100%;text-align: center;}
.tk_app_box03{background:url(../images/app_06.jpg) center no-repeat;height: 760px;width: 100%;text-align: center;}
.tk_app_box04{background:url(../images/app_08.jpg) center no-repeat;height: 760px;width: 100%;text-align: center;}



.eco-tech-box{padding-top:200px;}
.eco-tech-box h1{font-size: 46px;color: #fff;position: relative;}
.eco-tech-box h1 span{font-size: 20px;position: absolute;}
.eco-tech-box h2{font-size: 28px; color: #ccc;margin-bottom: 10px;}
.eco-tech-box p{font-size: 18px; color: #ccc;margin-top: 25px;line-height: 180%;position: relative;}
.eco-tech-box p span{font-size: 12px;position: absolute;top: -5px}
.eco-tech-box .btn{
	cursor: pointer;
    margin: 60px auto 0;
    width: 144px;
    height: 40px;
    overflow: hidden;
    background-color: #333;
    -js-display: flex;
    display: flex;
    -moz-justify-content: center;
    justify-content: center;
    -moz-align-items: center;
    align-items: center;
    -webkit-box-lines: multiple;
    -o-flex-wrap: wrap;
    flex-wrap: wrap;
    border-radius: .04rem;
    position: relative;
    z-index: 3;
    color: #fff;
    text-decoration:none;
    border-radius: 5px;
}
.eco-tech-box .btn span{
	z-index: 5;
    color: #fff;
    line-height: 40px;
    font-size: 16px;
    font-weight: 400;
}
.eco-tech-box .btn img{
	z-index: 5;
    margin-left: 20px;
    width: 20px;
    height: 20px;
    overflow: hidden;
}
.eco-tech-box .btn .over{
	transition: all .6s;
    width: 144px;
    height: 40px;
    overflow: hidden;
    background-color: #555;
    position: absolute;
    bottom: -40px;
    left: 0;
    z-index: 2;

}
.eco-tech-box .btn:hover .over{
	transition: all .6s;
    width: 144px;
    height: 40px;
    overflow: hidden;
    background-color: #555;
    position: absolute;
    bottom: 0px;
    left: 0;
    z-index: 2;
}
.clearfix{clear: both;}
.layui-layer-setwin{display: none;}
.close_btn{position: fixed;bottom:30px;text-align:center;left: 48.5%; }
.close_btn span{cursor: pointer;position: relative !important;margin:0 auto;}
.layui-layer {
    -webkit-animation-duration: 0.9s!important;
    animation-duration: 0.9s!important;
}
.tk_foot_btn{margin:60px auto 160px;display: block;background-color: #253746;text-align: center;color: #fff;font-size: 14px;border-radius: 10px;padding: 20px;text-decoration: none;width: 360px}