.mainBanner{
    width: 100%;
    padding-top: 41.6667%; /* 800 / 1920 ≈ 41.6667% */
    background-size: cover;
    background-position: center;
    /* height: 800px; */
    /* background-image: url('../assets/ai/banner@2x.png'); */
    background-image: url('https://zheguyun-gw.oss-cn-beijing.aliyuncs.com/ai.png');
    /* background-size: 100% auto;
    background-repeat: no-repeat;
    background-position: center; */
    position: relative;
    margin-top: 64px;
}
.bannerContent{
    position: absolute;
    left: 10.4%;
    top: 20%;
}
.popImageContent{
    background-image: url('../assets/ai/img_bg_pop.png');
    height: 330px;
    width: 590px;
    background-size: 100% 100%;
    background-repeat: no-repeat;
    position: relative;
    left: -22px;
    font-size: 22px;
    color: #4D4F74;
    box-sizing: border-box;
    padding: 50px 39px 39px 40px;
    text-indent: 2ch;
    line-height: 50px;
}
.bannerContent .title {
    font-weight: bold;
    font-size: 60px;
    background: linear-gradient( 180deg, #3470FF 0%, #7B5BFF 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    text-fill-color: transparent; /* 对于非WebKit浏览器 */
}
.bottomTypeContainer{
    position: absolute;
    bottom: -20px;
    left: 50%;
    transform: translate(-50%,-50%);
    display: flex;
    max-width: 1420px;
    /* width: 100%; */
    /* margin: 0 10.4%; */
}
.bottomTypeContainer img {
    display: inline-block;
    /* width: 100%; */
    height: 100%;
}
.bottomTypeContainer div {
    /* width: 15%; */
    height: 90px;
    aspect-ratio: 260/90;
    cursor: pointer;
    border: 2px solid #fff;
    border-radius: 10px;
    margin-right: 30px;
    box-shadow: 3px 3px 20px rgba(52, 112, 255, .12);
    text-align: center;
}
.bottomTypeContainer div:last-child {
    margin-right: 0;
}
.bottomTypeContainer div:hover {
    border-color: #fff;
}
.secondModal {
    margin-top: 40px;
    position: relative;
    padding-bottom: 120px;
}
.modalTop {
    background-image: url(../assets/ai/img_bg1.png);
    background-size: 100% 100%;
    margin: 0 10.4%;
    box-sizing: border-box;
    padding: 35px 43px 30px 40px;
    display: flex;
    justify-content: center;
    border: 2px solid #fff;
    box-shadow: 3px 3px 20px rgba(52, 112, 255, .12);
    border-radius: 20px;
    max-width: 1420px;
    margin: 0 auto;
   
}
.modalTop img {
    margin-right: 21px;
    width: 48px;
    display: inline-block;
    height: 46px;
}
.modalTop span {
    background: linear-gradient( 90deg, #3470FF 0%, #7B5BFF 100%);
    -webkit-background-clip: text;
     -webkit-text-fill-color: transparent;
     background-clip: text;
     font-size: 26px;
     display: inline-block;
}
.footerStepPart{
    display: flex;
    justify-content: center;
    align-items: center;
    max-width: 1420px;
    margin: 100px auto 0;
}
.bottomImagePic {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    height: 740px;
    background-image: url('../assets/ai/img_bg3.png');
    
    z-index: -1;
}
.sameStepModal{
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 120px;
}
.sameStepModal:last-child {
    margin-bottom: 0;
}
.sameStepModal .stepTitle {
    margin-left: 20px;
    font-weight: bold;
    font-size: 32px;
    color: #222222;
}
.titleFlexCon {
    display: flex;
    align-items: center;
    margin-bottom: 30px;
}
.sameStepModal p {
    font-size: 20px;
    color: #747C94;
    line-height: 40px;
}
.sameStepModal .rightImg {
    margin-left: 100px;
    width: 50%;
    max-width: 800px;
}
.sameStepModal .leftImg{
    margin-right: 80px;
    width: 50%;
    aspect-ratio: 800/500;
}
.firstBackImage{
    position: absolute;
    left: 0;
    top: 209px;
    width: 304px;
    height: 544px;
    background-image: url('../assets/ai/img_mask2.png');
    background-size: 100% 100%;;
}
.secondBackImage{
    position: absolute;
    right: 0;
    top: 366px;
    width: 390px;
    height: 962px;
    background-image: url('../assets/ai/img_mask1.png');
    background-size: 100% 100%;;
}
.thirdBackImage{
    position: absolute;
    left: 0;
    top: 1176px;
    width: 390px;
    height: 962px;
    background-image: url('../assets/ai/img_mask3.png');
    background-size: 100% 100%;;
}
@media screen and (max-width: 1640px) {
    .bannerContent {
        left: 5.4%;
        top: 11%;
    }
    .bottomTypeContainer {
        left: 0;
        transform: none;
        margin: 0 6.4%;
    }
    .bottomTypeContainer div {
        aspect-ratio: auto;
        margin-right: 44px;
    }
    .modalTop {
        margin: 0 6.4%
    }
    .sameStepModal {
        max-width: 1420px;
        margin: 0 6.4%;
    }
    .secondModal {
        margin-top: 50px
    }
}