html,body {
    width: 100%;
    height: 100%;
}
.index-container .swiper-slide {
    position: relative;
    overflow: hidden;
}
.index-container {
    position: relative;
    margin: 0 auto;
}
.ai_box1{
    width: 100%;
    margin: 0 auto;
    height: 858px;
    background: url('../images/ai_1.jpg') no-repeat;
    background-size: 100%;

}
.ran_con_div{
    width: 36%;
    padding: 310px 5% 0 45%;
}
.ran_con_div_title{
    font-family: Microsoft YaHei;
    font-weight: 400;
    font-size: 60px;
    color: #FFFFFF;
    text-shadow: 0px 0px 10px rgba(0,0,0,0.58);
}
.ran_con_div_text{
    font-family: Microsoft YaHei;
    font-weight: 400;
    font-size: 24px;
    color: #FFFFFF;
    padding-top: 43px;
    /*line-height: 32px;*/
}
.ran_con_div_bottom{
    margin-top: 39px;
}
.ran_con_div_bottom_text{
    width: 540px;
    background: #EEEEEE;
    border-radius: 20px;
    text-align: center;
    padding: 8px 5px;
    /*float: left;*/
    margin-right: 30px;
    font-family: Microsoft YaHei;
    font-weight: 400;
    font-size: 14px;
    color: #7F7F7F;
    margin-bottom: 20px;
}
.ai_ran_one{
    width: 100%;
    height: 796px;
    background: #FFFFFF;
}
.ai_main{
    width: 1400px;
    margin: 0 auto;
}
.ai_ran_one_title{
    font-family: Microsoft YaHei;
    font-weight: 400;
    font-size: 36px;
    color: #404040;
    padding-top: 89px;
    text-align: center;
}
.ai_ran_one_text{
    width: 80%;
    margin: 0 auto;
    font-family: Microsoft YaHei;
    font-weight: 400;
    font-size: 18px;
    color: #7F7F7F;
    padding-top: 17px;
    text-align: center;
}
.ai_ran_one_img{
    width: 1306px;
    margin: 0 auto;
    height: 380px;
    background:url(../images/ai_2.png) no-repeat center center;
    background-size: 100% auto;
    background-position: center center;
    margin-top: 5%;
}
.ai_ran_one_img_cont{
    width: 23%;
    padding: 31% 5% 0 5%;
    text-align: center;
    float: left;
}
.ai_ran_one_img_cont_text{
    font-family: Microsoft YaHei;
    font-weight: 400;
    font-size: 16px;
    color: #404040;
    margin-bottom: 3%;
}
.ai_ran_two{
    height: 660px;
    background: #F9F9F9;
}

.ai_ran_two_ul{
    width: 90%;
    margin: 0 auto;
    padding-top: 8%;
}
.ai_ran_two_ul li{
    list-style: none;
    width: 16%;
    float: left;
    padding:0 2% 2% 2%;
}
.ai_ran_two_ul li img{
    width: 75%;
    margin: 0 auto;
    display: block;
}
.ai_ran_two_ul_title{
    text-align: center;
    font-family: Microsoft YaHei;
    font-weight: bold;
    font-size: 18px;
    color: #404040;
    padding: 2% 0 8% 0;
}
.ai_ran_two_ul_text{
    text-align: center;
    font-family: Microsoft YaHei;
    font-weight: 400;
    font-size: 14px;
    color: #7F7F7F;
    line-height: 1.2em;
    margin-bottom: 5%;
}
.ai_ran_three{
    height: 660px;
    background: #FFFFFF;
}
.ai_ran_three_left{
    width: 39%;
    float: left;
    padding: 10% 0 0 3%;
}
.ai_ran_three_left img{
    max-width: 100%;
    position: relative;
    top: auto;
}
.ai_ran_three_right{
    width: 42%;
    float: left;
    padding: 18% 2% 0 12%;
}
.ai_ran_three_right_title{
    font-family: Microsoft YaHei;
    font-weight: bold;
    font-size: 24px;
    color: #404040;
    margin-bottom: 5%;
}
.ai_ran_three_right_title2{
    font-family: Microsoft YaHei;
    font-weight: 400;
    font-size: 22px;
    color: #404040;
    margin-bottom: 5%;
}
.ai_ran_three_right_text{
    font-family: Microsoft YaHei;
    font-weight: 400;
    font-size: 18px;
    color: #7F7F7F;
    margin-bottom: 2%;
}
.ai_ran_four{
    height: 660px;
    background: #F9F9F9;
}
.ai_ran_four_left{
    float: left;
    width: 39%;
    float: left;
    padding: 18% 0 0 12%;
}
.ai_ran_four_right{
    width: 43%;
    float: left;
    padding: 10% 2% 0 3%;
}
.ai_ran_four_right img{
    max-width: 100%;
    position: relative;
    top: auto;
}
.ai_ran_seven{
    height: 660px;
    background: #FFFFFF;
}
.ai_ran_seven_bottom{
    margin-top: 20%;
}
.ai_ran_seven_bottom_left{
    width: 23%;
    text-align: center;
    float: left;
}
.ai_ran_seven_bottom_right{
    float: left;
    margin-left: 50%;
    margin-top: 1%;
}
.ai_ran_seven_bottom_left_text1{
    font-family: Microsoft YaHei;
    font-weight: 400;
    font-size: 14px;
    color: #7F7F7F;
}
.ai_ran_seven_bottom_left_text2{
    font-family: Microsoft YaHei;
    font-weight: bold;
    font-size: 14px;
    color: #0D7EFB;
    line-height: 16px;
    margin-top: 5px;
}
.ai_ran_seven_bottom_right_text1{
    font-family: Microsoft YaHei;
    font-weight: 400;
    font-size: 14px;
    color: #7F7F7F;
}
.ai_ran_seven_text1{
    width: 90%;
    font-family: Microsoft YaHei;
    font-weight: 400;
    font-size: 14px;
    color: #7F7F7F;
    text-align: center;
    margin-top: -53%;
    position: relative;
    z-index: 99;
}
.ai_ran_seven_text2{
    width: 33%;
    font-family: Microsoft YaHei;
    font-weight: 400;
    font-size: 14px;
    color: #7F7F7F;
    margin-left: 54%;
    margin-top: 12%;
    position: relative;
    z-index: 99;
    text-align: left;
    line-height: 16px;
}
.ai_ran_eight{
    height: 660px;
    background: #F9F9F9;
}