.page-top img{
    display: block;
    width: 100%;
    height: auto;
}

.sec1 {
    padding-bottom: 5.607476635514018vw;
    padding-top: 5.607476635514018vw;

    display: flex;
    background-color: rgba(246, 244, 245, 1);
}

.sec1 .left{
    width: 50%;
    flex: 0 0 auto;
}

.sec1 .left img{
    width: 75%;
    height: auto;
    display: block;

    margin-left: 20%;
}

.sec1 .right{
    width: 50%;
    flex: 0 0 auto;
}

.sec1 .desc{
    margin-right: 24.890613698521456%;
}

.sec1 .title{
    position: relative;
    font-size: 30px;
    color: #8e24aa;
    margin-bottom: 60px;
}

.sec1 .title::after {
    content: "";
    width: 80px;
    height: 2px;
    position: absolute;
    background-color: rgb(207, 147, 217);
    bottom: -30px;
    left: 0;
}

.sec1 .subtitle{
    color: rgb(102, 102, 102);
    font-size: 18px;
    margin-bottom: 30px;
}

.sec1 .subtitle{
    font-size: 16px;
    line-height: 26px;
}

.sec2{
    padding: 2.94314381270903vw 12.4% 2.7210884353741496vw;
}

.sec2 .title{
    color: rgb(142, 36, 170);
    font-size: 24px;
    text-align: center;
}

.sec2 img{
    display: block;

    margin: 2.4080267558528425vw auto 0;
    width: 70%;
    height: auto;
}

.sec3{
    padding: 5.308560053085601vw 18%;

    background: url("../images/d4-3-back.webp") center/cover no-repeat;
}

.sec3 .title{
    margin-top: 40px;
    font-size: 30px;
    color: rgb(142, 36, 170);
}

.sec4{
    padding: 2.74247491638796vw 18%;
}

.swiper-photo.swiper-container{
    margin-top: 40px;
    margin-bottom: 40px;
}

.swiper-photo .swiper-slide img{
    display: block;
    width: 100%;
    height: auto;
}

.swiper-photo .btn-prev,
.swiper-photo .btn-next{
    width: 60px;
    height: 60px;
    top: 0;
    bottom: 0;
    margin: auto;
    position: absolute;
    border-radius: 6px;
    z-index: 290;
    cursor: pointer;

    background: center/12px auto no-repeat rgba(0,0,0,.1)
}

.swiper-photo .btn-prev{
    left: 12px;
    background-image: url("../images/icon_angle_left.png");
}

.swiper-photo .btn-next{
    right: 12px;
    background-image: url("../images/icon_angle_right.png");
}

.swiper-photo .btn-prev:hover,
.swiper-photo .btn-next:hover{
    background-color: rgba(0,0,0,.3);
}

@media (max-width: 768px) {
    .sec1{
        flex-direction: column-reverse;
    }

    .sec1 .right{
        width: 100%;

        padding: 5.066666666666666vw 3.733%;

    }

    .sec1 .desc{
        width: 100%;
    }

    .sec1 .left{
        display: block;
        width: 100%;
    }

    .sec1 .left img{
        display: block;
        width: 100%;
        height: auto;
        margin-left: 0;
    }

    .sec2{
        padding: 10vw 4vw;
    }

    .sec3{
        height: 80vw;

        display: flex;
        flex-direction: column;
        align-items: stretch;
        justify-content: flex-end;
        padding-left: 0;
        padding-right: 0;
        padding-bottom: 12vw;
        text-align: center;
    }

    .sec4{
        padding: 10vw 5vw;
    }

    .sec4 .swiper-photo{
        width: calc(100% + 10vw);
        margin-left: -5vw;
        height: auto;
    }

    .sec2 img{
        width: 100%;
        height: auto;
        margin-top: 8vw;
    }
    .sec3 .title{
        color:#fff;
        font-size: 22px;
    }

}