*{
    margin: 0 auto;
}

#main{
    margin: 0 auto;
    width: 100%;
}

#video_part{
    width: 100%;
    height: 600px;
    background: url("../img/机器人视频占位图.webp") no-repeat 0 / 100% 600px;
    font-size: 40px;
    font-weight: bold;
    color: #FFFFFF;
    line-height: 0px;
}

#video_img{
    margin-top: 80px;
    width: 100px;
    height: 100px;
    background: url("../img/播放.webp") no-repeat 0 / 100% 100%;
}

#video_part p{
    width: 200px;
    height: 50px;
    padding-top: 160px;
}

#robot_part{
    width: 100%;
    /*height: 3800px;*/
}

.robot_about{
    width: 80%;
    height: 1148px;
    border: #CCCCCC 1px solid;
    margin-top: 80px;
    margin-bottom: 80px;
    background: url("../img/一体化AI机芯.webp") no-repeat 50% 0 / 70% 460px;
    transition: height 1s, box-shadow 1s;
    overflow: hidden;
}

.robot_about:nth-of-type(2){
    background-image: url("../img/灵动眼枪球联动AI摄像机(23X）.webp");
}

.robot_about:nth-of-type(3){
    background-image: url("../img/双云台枪球联动AI一体机（3559）.webp");
}

.robot_about:hover{
    height: 3000px;
    transform: translate3d(-1px,1px,0px);
    box-shadow: 0 0 20px 1px rgba(0,0,0,0.16);
}

.robot_about:nth-of-type(2):hover{
    height: 2600px;
}

.robot_about:nth-of-type(3):hover{
    height: 2600px;
}

.robot_title{
    margin-top: 460px;
    text-align: center;
    width: 80%;
    height: 80px;
    font-size: 36px;
    font-weight: 400;
    color: #000000;
    line-height: 40px;
}

.robot_title p{
    text-align: center;
    font-size: 42px;
    font-weight: bold;
    margin-bottom: 20px;
}

.horizon_line{
    height: 1px;
    width: 90%;
    border: #E6E6E6 1px solid;
    margin-top: 80px;
}

.robot_detail p{
    width: 250px;
    height: 40px;
    font-size: 34px;
    font-weight: bold;
    color: #333333;
    line-height: 40px;
    margin: 50px auto 30px 0;
}

.robot_detail{
    width: 86%;
    height: 300px;
    font-size: 32px;
    font-weight: 400;
    color: #666666;
    line-height: 50px;
}

.gap{
    height: 10px;
    width: 100%;
}