/* /index/ */
.intro{
    width: 60%;
    margin: auto;
    text-align: center;
    margin-top: 80px;
    margin-bottom: 80px;
}

.intro-title{
    font-size: 40px;
    color: #949ba9;
    font-style: italic;
    letter-spacing: 2px;
    margin-bottom: 50px;
}
.intro-title>div{
    display: inline-block;
}
.intro-title>div:nth-child(1){
    margin-right: 20px;
}

.intro-card{
    box-shadow: 0px 0px 10px rgb(136 136 136 / 40%);
    width: 80%;
    margin: auto;
    border-radius: 10px;
    cursor: default;
    margin-bottom: 20px;
}
.intro-card:hover{
    transform: scale(1.1);
}
.intro-card>img{
    height: 80px;
    margin: 30% 0 20%;
}
.intro-card>div{
    font-size: 22px;
    font-weight: 600;
    color: #888;
    padding-bottom: 40px;
}

.two-img h3 {
    font-family: SourceHanSansCN-Heavy;
    font-weight: normal;
    font-style: italic;
    font-stretch: normal;
    letter-spacing: 0px;
    color: #fff;
}

.two-img p {
    font-family: BebasNeueRegular;
    font-weight: normal;
    font-stretch: normal;
    letter-spacing: 1px;
    color: #fff;
    opacity: 0.2;
}

.class-container {
    position: relative;
}

.class-flex-text h3 {
    letter-spacing: 0px;
    font-family: SourceHanSansCN-Bold;
    font-stretch: normal;
    color: #2c2e33;
    font-weight: 600;
}

.class-flex-text p {
    letter-spacing: 0px;
    color: #949ba9;
}

.box-1-text h3 {
    letter-spacing: 0px;
    font-style: italic;
    color: #2c2e33;
    font-weight: 600;
}

.box-1-text h3 span {
    color: #1077c8;
}

.box-1-text p {
    letter-spacing: 1px;
    color: #55585c;
}

#particles {
    position: absolute;
    bottom: 0px;
    left: 0;
    width: 100%;
    height: 70%;
    background-color: transparent;
    cursor: pointer;
}

@media screen and (min-width:769px) {
    /* banner */
    .feast-img {
        background: url('/Public/images/banner2.jpg')no-repeat top center;
        -webkit-background-clip: content;
        height: 800px;
        width: 100%;
        padding-top: 60px;
        position: relative;
        /* background-size: 100%; */
    }
    
    
    /* 立足数据分析 */
    .two-img {
        background: url('/Public/images/unsplash.png')no-repeat center center;
        -webkit-background-clip: content;
        height: 700px;
        width: 100%;
        display: flex;
        flex-direction: column;
        justify-content: center;
        align-items: center;
        text-align: center;
    }
    .two-img h3 {
        font-size: 81px;
    }
    .two-img p {
        font-size: 26px;
        line-height: 60px;
    }
    /* 教与学全过程应用 */
    .class-flex {
        width: 60%;
        height: 44%;
        position: absolute;
        background-color: #fff;
        box-shadow: 0px 10px 60px 0px rgba(72, 75, 90, 0.1);
        border-radius: 10px;
        z-index: 99999;
        left: 0;
        right: 0;
        margin: 0 auto;
        top: 33%;
        /* top: 40%; */
    }
    .class-flex-text {
        display: flex;
        flex-direction: column;
        align-items: center;
        margin-top: 9%;
    }
    .class-flex-text h3 {
        font-size: 72px;
    }
    .class-flex-text p {
        line-height: 74px;
        font-size: 48px;
        margin-top: 6%;
        text-align: center;
    }
    .flex-box-1 {
        display: flex;
        justify-content: center;
        margin-top: 10%;
    }
    .box-1-text {
        width: 40%;
        margin: 0 5%;
    }
    .box-1-text h3 {
        font-size: 40px;
        line-height: 60px;
    }
    .box-1-text p {
        line-height: 42px;
        font-size: 30px;
        margin-top: 8%;
    }
    /* 背景图 */
    .three-img {
        background: url('/Public/images/xingxing.png')no-repeat center center;
        -webkit-background-clip: content;
        position: relative;
        cursor: pointer;
        height: 1100px;
        width: 100%;
    }
    .four-img {
        background: url('/Public/images/four.png')no-repeat center center;
        -webkit-background-clip: content;
        height: 1000px;
        width: 100%;
    }
    /* 极简构成 */
    .m-five-img {
        display: none;
    }
    .five-img {
        position: relative;
        width: 100%;
        height: 1400px;
        display: block;
    }
    .five-rotundity {
        background: url('/Public/images/rotundity.png') no-repeat;
        position: absolute;
        height: 437px;
        width: 100%;
        top: 17%;
        background-size: 160px 437px;
    }
    .five-text {
        position: absolute;
        top: 19%;
        left: 20%;
    }
    .five-text h3 {
        font-family: SourceHanSansCN-Heavy;
        font-stretch: normal;
        letter-spacing: 0px;
        color: #2c2e33;
        font-size: 72px;
        font-weight: 600;
    }
    .five-text p {
        font-family: SourceHanSansCN-Light;
        font-weight: normal;
        font-stretch: normal;
        letter-spacing: 0px;
        color: #949ba9;
        font-size: 48px;
        margin-top: 4%;
        line-height: 60px;
    }
    .five-computer {
        top:30%;
        right: 10%;
        z-index: 666666;
        position: absolute;
    }
    .five-computer-item,
    .five-saomiao-item{
        display: inline-block;
        vertical-align: middle;
    }
    .five-computer-icon,
    .five-saomiao-icon{
        width: 70px;
        height: 70px;
        margin-right: 30px;
    }
    .five-computer-img{
        width: 500px;
    }
    .five-computer>div,
    .five-saomiao>div{
        letter-spacing: 1px;
        color: #676767;
        font-size: 40px;
        margin-right: 100px;
    }
    .five-saomiao-img{
        width: 500px;
        margin-right: 100px;
    }
    .five-saomiao{
        bottom:15%;
        left: 10%;
        z-index: 666666;
        position: absolute;
    }
}

@media screen and (max-width: 768px) {
    /* banner */
    .feast-img {
        background: url('/Public/images/m-banner.jpg')no-repeat center center;
        padding-top: 60px;
        width: 100%;
        background-size: contain;
        position: relative;
    }
    .feast-img::after {
        content: "";
        display: block;
        padding-bottom: 146.4%;
    }
    
    .intro{
        margin-top: 50px;
        margin-bottom: 30px;
        width: 90%;
    }
    .intro-title{
        font-size: 24px;
        margin-bottom: 40px;
    }
    .intro-title>div{
        display: block;
    }
    .intro-title>div:nth-child(1){
        margin-right: 0px;
    }
    .intro-card>img {
        height: 50px;
        margin: 25% 0 15%;
    }
    .intro-card>div{
        font-size: 16px;
        padding-bottom: 20px;
    }

    /* 立足数据分析 */
    .two-img {
        background: url('/Public/images/m-unsplash.jpg')no-repeat center center;
        /* height: 700px; */
        width: 100%;
        text-align: center;
        background: contain;
    }
    .two-img::after {
        content: '';
        display: block;
        /* padding-bottom: 81.33%; */
        padding-bottom: 41.33%;
    }
    .two-img h3 {
        font-size: 40px;
        line-height: 50px;
        padding-top: 40%;
    }
    .two-img p {
        font-size: 18px;
        line-height: 50px;
    }
    /* 教与学全过程应用 */
    .class-flex-text {
        text-align: center;
        margin: 25px 0 40px 0;
        /* width: 80%;
        margin: 0 auto; */
    }
    .class-flex-text h3,
    .five-text h3 {
        font-size: 30px;
        line-height: 60px;
    }
    .class-flex-text p,
    .five-text p {
        line-height: 30px;
        font-size: 20px;
    }
    .flex-box-1 {
        text-align: center;
        width: 80%;
        margin: 0 auto;
        padding-bottom: 45px;
        position: relative;
    }
    .box-1-text a,
    .three-img,
    .four-img {
        display: none;
    }
    .box-1-text h3 {
        font-size: 22px;
        line-height: 35px;
        margin: 15px;
    }
    .box-1-text p {
        line-height: 28px;
        font-size: 18px;
    }
    /* .flex-box-1>a {
        width: 80%;
        margin: 0 auto;
    } */
    .flex-box-1 img {
        width: 60%;
    }
    .pos-1 img,
    .pos-3 img {
        position: absolute;
        top: 0;
        left: 50%;
        transform: translateX(-50%);
    }
    .pos-1 .box-1-text::before {
        content: '';
        display: block;
        padding-top: 65%;
    }
    .pos-3 .box-1-text::before {
        content: '';
        display: block;
        padding-top: 53%;
    }
    /* 极简构成 */
    .five-img {
        display: none;
    }
    .m-five-img {
        display: block;
        position: relative;
        width: 100%;
        /* height: 1400px; */
        background: #fafbfb;
        padding-bottom: 60px;
    }
    .m-five-rotundity {
        background: url('/Public/images/rotundity.png') no-repeat;
        position: absolute;
        width: 30%;
        height: 50%;
        background-size: contain;
        top: 100px;
    }
    .m-five-text {
        width: 80%;
        margin: 0 auto;
        padding: 30px 0;
    }
    .m-five-text h3 {
        font-family: SourceHanSansCN-Heavy;
        color: #2c2e33;
        font-weight: 600;
        font-size: 30px;
        line-height: 60px;
    }
    .m-five-text p {
        font-family: SourceHanSansCN-Light;
        color: #949ba9;
        font-size: 20px;
        line-height: 30px;
    }
    .m-five-computer {
        width: 60%;
        float: right;
        margin-bottom: 30px;
    }
    .five-computer-icon,
    .five-saomiao-icon{
        width: 30px;
    }
    .m-five-saomiao {
        width: 50%;
    }
    .m-five-computer>img:nth-child(1),
    .m-five-saomiao>img:nth-child(1) {
        width: 100%;
    }
    .m-five-computer-box {
        margin-left: -60px;
    }
    .m-five-saomiao-box{
        margin-left: 60%;
        margin-top: 10px;
        width: 100%;
    }
    .five-computer-icon,
    .five-saomiao-icon{
        margin-right: 10px;
    }
    .m-five-computer-box>img,
    .m-five-computer-box>div,
    .m-five-saomiao-box>img,
    .m-five-saomiao-box>div{
        display: inline-block;
        vertical-align: middle;
    }
    .m-five-computer p,
    .m-five-saomiao p {
        font-family: SourceHanSansCN-Normal;
        font-size: 14px;
        letter-spacing: 1px;
        color: #304459;
    }
    .m-five-saomiao p {
        position: absolute;
        bottom: 3%;
        left: 8%;
    }
    .daying-box {
        position: relative;
    }
}