* {
    padding: 0;
    margin: 0;
    list-style: none;
}


.wrapper {
    width: 100%;
    height: auto;
    overflow: hidden !important;

}

.main_bg {
    position: fixed;
    top: 0;
    left: 50%;
    transform: translateX(-50%);
    z-index: -1;

}

.wrapper .main_content {
    width: 68%;
    height: auto;
    margin: 0 auto;

}

.main_top {
    width: 100%;
    height: auto;
    padding: 100px 0 140px;
    margin: 0 auto;
    box-sizing: border-box;
    display: flex;
    justify-content: space-around;
    align-items: center;
}


.main_top .content_l,
.main_top .content_r {
    flex: 1 1 auto;

}

.main_top .content_l {
    display: flex;
    align-items: center;

}

.main_top .content_l .logo {
    width: 160px;
    height: 160px;
    border-radius: 24px;
    box-shadow: 0 6px 10px rgba(255, 212, 137, .72);
    margin-right: 30px;
}

.main_top .content_l .desc {
    color: #ff4e31;

}

.main_top .content_l .desc h3 {
    font-size: 40px;
    font-weight: bold;
    text-shadow: 2px 3px 0 rgba(255, 138, 102, 0.32);
}

.main_top .content_l .desc .text_tit {
    font-size: 36px;
    font-weight: 600;
    margin: 8px 0 20px;
}

.main_top .content_l .desc .version {
    font-size: 16px;
    color: #b39a83;
}

.main_top .content_l .desc .version span {
    margin: 0 10px;
}

.main_top .content_r {
    /*display: flex;*/
    /*justify-content: flex-end;*/
}

.main_top .content_r .code_wrap {
    width: 200px;
    height: 240px;
    text-align: center;
    background: #fff;
    border-radius: 10px;
    padding: 10px;
    box-sizing: border-box;
}

.main_top .content_r .code_wrap .qrcode {
    width: 180px;
    height: 180px;

}

.main_top .content_r .code_wrap p {
    color: #ff4e31;
    font-size: 16px;
    text-align: center;
    line-height: 2;
}


.main_bt {
    width: 100%;
    height: auto;

}

.btn_group {
    width: 100%;
    margin: 0 auto;
    height: auto;
    display: flex;
    justify-content: space-around;
    flex-wrap: wrap;
    align-items: flex-start;
    align-content: center;
}

.btn_group li {
    flex: 1 1 auto;
    width: 50%;
    height: auto;
    margin-bottom: 35px;
}

.btn_group li button {
    margin: 0 auto;
    display: block;
    width: 90%;
    height: 5rem;
    background: #ff694e;
    box-shadow: 6px 6px #ffd6cf;
    border-radius: 6px;
    border: 0;
    color: #fff;
    font-size: 21px;
    text-align: center;
    cursor: pointer;
    transition: .2s;
}

.btn_group li button:hover {
    box-shadow: none;
}

.btn_group li button::before {
    content: '';
    display: inline-block;
    width: 1.9rem;
    height: 1.9rem;
    background: url(../image/ios.png) no-repeat center;
    background-size: contain;
    vertical-align: middle;
    margin-right:1.8rem;
}

.btn_group li button.android::before {
    background: url(../image/android.png) no-repeat center;
    background-size: contain;
}

.btn_group li button.pc::before {
    background: url(../image/Pc.png) no-repeat center;
    background-size: contain;
}

.btn_group li button.h5::before {
    background: url(../image/H5.png) no-repeat center;
    background-size: contain;
}


@media screen and (min-width: 992px) and (max-width:1199px) {


    .wrapper .main_content {
        width: 75%;
        height: auto;
        margin: 0 auto;

    }

    .main_top {
        width: 100%;
        height: auto;
        padding: 8rem 0 9rem;
        margin: 0 auto;
        box-sizing: border-box;

    }

    .main_top .content_l .logo {
        width: 8rem;
        height: 8rem;
        border-radius: 1.3rem;
        box-shadow: 0 .4rem 0.8rem rgba(255, 212, 137, .72);
        margin-right: 2rem;
    }


    .main_top .content_l .desc h3 {
        font-size: 2.3rem;
        font-weight: bold;
        text-shadow: 2px 3px 0 rgba(255, 138, 102, 0.32);
    }

    .main_top .content_l .desc .text_tit {
        font-size: 1.8rem;
        margin: 0.4rem 0 1rem;
    }

    .main_top .content_l .desc .version {
        font-size: 0.8rem;
    }

    .main_top .content_l .desc .version span {
        margin: 0 0.5rem;
    }

    .main_top .content_r .code_wrap {
        width: 13rem;
        height: 15rem;
        text-align: center;
        background: #fff;
        border-radius: 10px;
        padding: 10px;
        box-sizing: border-box;
    }

    .main_top .content_r .code_wrap .qrcode {
        width: 12rem;
        height: 12rem;

    }

    .main_top .content_r .code_wrap p {
        font-size: 0.9rem;
    }

    .btn_group {
        width: 100%;
    }

    .btn_group li {
        flex: 1 1 auto;
        width: 50%;
        height: auto;
        margin-bottom: 2rem;
    }

    .btn_group li button {

        width: 85%;
        height: 4.5rem;
        box-shadow: .4rem .4rem #ffd6cf;
        border-radius: 0.4rem;
        font-size: 1.3rem;

    }

    .btn_group li button:hover {
        box-shadow: none;
    }

    .btn_group li button::before {
        content: '';
        display: inline-block;
        width: 32px;
        height: 32px;
        background: url(../image/ios.png) no-repeat center;
        background-size: contain;
        vertical-align: middle;
        margin-right: 30px;
    }

}

@media screen and (min-width:767px) and (max-width:960px) {
    html {
        font-size: 14px !important;
    }

    .wrapper .main_content {
        width: 80%;
        height: auto;
        margin: 0 auto;

    }

    .main_top {
        width: 100%;
        height: auto;
        padding: 13rem 0 9rem;
        margin: 0 auto;
        box-sizing: border-box;

    }

    .main_top .content_l .logo {
        width: 8.5rem;
        height: 8.5rem;
        border-radius: 1.4rem;
        box-shadow: 0 .4rem 0.8rem rgba(255, 212, 137, .72);
        margin-right: 1rem;
    }


    .main_top .content_l .desc h3 {
        font-size: 2.2rem;
        text-shadow: 2px 3px 0 rgba(255, 138, 102, 0.32);
    }

    .main_top .content_l .desc .text_tit {
        font-size: 1.8rem;
        margin: 0.4rem 0 1rem;
    }

    .main_top .content_l .desc .version {
        font-size: 1rem;
    }

    .main_top .content_l .desc .version span {
        margin: 0 0.5rem;
    }

    .main_top .content_r .code_wrap {
        width: 10rem;
        height: 12rem;
        text-align: center;
        background: #fff;
        border-radius: 10px;
        padding: 10px;
        box-sizing: border-box;
    }

    .main_top .content_r .code_wrap .qrcode {
        width: 9rem;
        height: 9rem;
        border-radius: 0.8rem;

    }

    .main_top .content_r .code_wrap p {
        font-size: 0.6rem;
    }

}

@media screen and (min-width:640px) and (max-width: 766px) {
    html {
        font-size: 150% !important;
    }

    .wrapper .main_content {
        width: 90%;
        height: auto;
        margin: 0 auto;

    }

    .main_top {
        width: 100%;
        height: auto;
        padding: 6rem 0 6rem;
        margin: 0 auto;
        box-sizing: border-box;

    }

    .main_top .content_l .logo {
        width: 5.4rem;
        height: 5.4rem;
        border-radius: 1rem;
        box-shadow: 0 .3rem 0.5rem rgba(255, 212, 137, .72);
        margin-right: 0.5rem;
    }


    .main_top .content_l .desc h3 {
        font-size: 1.3rem;
        text-shadow: 0.1rem 0.1rem 0 rgba(255, 138, 102, 0.32);
    }

    .main_top .content_l .desc .text_tit {
        font-size: 1.2rem;
        margin: 0.4rem 0 1rem;
    }

    .main_top .content_l .desc .version {
        font-size: 0.5rem;
    }

    .main_top .content_l .desc .version span {
        margin: 0 0.5rem;
    }

    .main_top .content_r .code_wrap {
        width: 7rem;
        height: 8.5rem;
        border-radius: 0.4rem;
        padding: 0.5rem;
        box-sizing: border-box;
    }

    .main_top .content_r .code_wrap .qrcode {
        width: 6rem;
        height: 6rem;
        border-radius: 0.6rem;

    }

    .main_top .content_r .code_wrap p {
        font-size: 0.6rem;
    }

    .btn_group {
        width: 100%;
    }

    .btn_group li {
        flex: 1 1 auto;
        width: 50%;
        height: auto;
        margin-bottom: 1.5rem;
    }

    .btn_group li button {

        width: 84%;
        height: 3.2rem;
        box-shadow: .2rem .2rem #ffd6cf;
        border-radius: 0.3rem;
        font-size: 1rem;

    }

    .btn_group li button::before {
        content: '';
        display: inline-block;
        width: 1.25rem;
        height: 1.25rem;
        margin-right: 1.5rem;
    }
}

@media screen and (min-width:375px) and (max-width : 480px) {
    html {
        font-size: 10px !important;

    }

    .wrapper .main_content {
        width: 100%;

    }

    .main_top {
        width: 100%;
        height: auto;
        padding: 5rem 0 5rem;
        margin: 0 auto;
        box-sizing: border-box;
        flex-direction: column;
        justify-content: center;
        align-items: center;
    }
    .main_top .content_l{
        flex-direction: column;
        text-align: center;
    }
    .main_top .content_l .logo {
        width: 9rem;
        height: 9rem;
        border-radius: 1.4rem;
        box-shadow: 0 .5rem 0.8rem rgba(255, 212, 137, .72);
        margin-right: 0rem;
        margin-bottom: 2rem;
    }


    .main_top .content_l .desc h3 {
        font-size: 3rem;
        text-shadow: 0.2rem 0.2rem 0 rgba(255, 138, 102, 0.32);
    }

    .main_top .content_l .desc .text_tit {
        font-size: 1.8rem;
        margin: 0.4rem 0 1rem;
    }

    .main_top .content_l .desc .version {
        font-size:1.4rem;
    }

    .main_top .content_l .desc .version span {
        margin: 0  0.5rem;
    }

    .main_top .content_r .code_wrap {
        width: 15rem;
        height: 17.5rem;
        border-radius: 1rem;
        padding: 0.5rem;
        box-sizing: border-box;
        margin-top: 3rem;
    }

    .main_top .content_r .code_wrap .qrcode {
        width: 14rem;
        height: 14rem;
        border-radius: 0.3rem;

    }

    .main_top .content_r .code_wrap p {
        font-size: 1.3rem;
    }

    .btn_group {
        width: 100%;
    }
    .btn_group li{
        margin-bottom: 2.5rem;
    }
    .btn_group li button {
        width: 90%;
        height: 4.5rem;
        box-shadow: .4rem .4rem #ffd6cf;
        border-radius: 0.5rem;
        font-size: 1.5rem;

    }

    .btn_group li button::before {
        content: '';
        display: inline-block;
        width: 1.8rem;
        height: 1.8rem;
        margin-right: 1.6rem;
    }
}

@media screen and (min-width:320px) and (max-width:370px) {
    html {
        font-size: 5px !important;
    }

    .wrapper .main_content {
        width: 100%;

    }

    .main_top {
        width: 100%;
        height: auto;
        padding: 8rem 0 8rem;
        margin: 0 auto;
        box-sizing: border-box;
        flex-direction: column;
        justify-content: center;
        align-items: center;
    }
    .main_top .content_l{
        flex-direction: column;
        text-align: center;
    }
    .main_top .content_l .logo {
        width: 15rem;
        height: 15rem;
        border-radius: 1.8rem;
        box-shadow: 0 1rem 1.2rem rgba(255, 212, 137, .72);
        margin-right: 0rem;
        margin-bottom: 4rem;
    }


    .main_top .content_l .desc h3 {
        font-size: 4.5rem;
        text-shadow: 0.2rem 0.2rem 0 rgba(255, 138, 102, 0.32);
    }

    .main_top .content_l .desc .text_tit {
        font-size:3.2rem;
        margin: 0.4rem 0 1rem;
        margin: 1.5rem 0;
    }

    .main_top .content_l .desc .version {
        font-size: 2rem;
    }

    .main_top .content_l .desc .version span {
        margin: 0 0.5rem;
    }

    .main_top .content_r .code_wrap {
        width: 26rem;
        height: 31rem;
        border-radius: 1rem;
        padding: 0.5rem;
        box-sizing: border-box;
        margin-top: 6rem;
    }

    .main_top .content_r .code_wrap .qrcode {
        width: 24rem;
        height: 24rem;
        border-radius: 0.5rem;

    }

    .main_top .content_r .code_wrap p {
        font-size: 2rem;
    }

    .btn_group {
        width: 100%;
    }
    .btn_group li{
        margin-bottom: 3.6rem;
    }
    .btn_group li button {

        width: 90%;
        height: 7.5rem;
        box-shadow: .6rem .6rem #ffd6cf;
        border-radius: 0.8rem;
        font-size: 2rem;

    }

    .btn_group li button::before {
        content: '';
        display: inline-block;
        width: 3.2rem;
        height: 3.2rem;
        margin-right: 2rem;
    }

}