.page {
    position: relative;
    box-sizing: border-box;
    width: 100vw;
    height: 100vh;
    padding-top: 0;
    padding-top: constant(safe-area-inset-top);
    padding-top: env(safe-area-inset-top);
    overflow: hidden;
    background: #fff;
    font-family: -apple-system,BlinkMacSystemFont,Helvetica Neue,Helvetica,Segoe UI,Arial,Roboto,PingFang SC,miui,Hiragino Sans GB,Microsoft Yahei,sans-serif
}

.download-title {
    display: flex
}

.section {
    background: url(https://h5.tanchat.live/img/bg@1x.820ebb29.png) 50% no-repeat;
    background-size: cover;
    width: 100%;
    padding: 20px;
    flex: 1;
    overflow: hidden
}

.url-wrapper {
    width: 50%
}

.front-svg {
    top: 3px;
    transform: scaleX(1.03)
}

.back-svg,.front-svg {
    position: absolute;
    font-weight: 500
}

.back-svg {
    top: 0
}

.download-wrapper {
    display: flex;
    flex-direction: column
}

.text {
    color: #ef5b09;
    font-size: 32px;
    margin-top: 18px;
    font-weight: 500
}

.group {
    width: 100%;
    position: relative;
    display: flex;
    justify-content: space-between
}

.download-appstore {
    margin-top: 14rem;
    margin-bottom: 20px
}

.download-appstore,.download-google {
    width: 162px;
    height: 48px
}

.image-wrapper {
    height: 530px;
    width: 354px;
    position: relative;
    top: 10%
}

[dir=ltr] .image-wrapper {
    background: url(/img/introduce@2x.29bb32fb.png) 0 0 no-repeat;
    right: 25%
}

[dir=rtl] .image-wrapper {
    background: url(/img/introduce@2x.29bb32fb.png) 100% 0 no-repeat;
    left: 25%
}

[dir] .image-wrapper {
    background-size: 354px 530px
}

.image_4 {
    position: absolute;
    width: 210px;
    height: 426px;
    top: -100px
}

[dir=ltr] .image_4 {
    left: 110px
}

[dir=rtl] .image_4 {
    right: 110px
}

.footer {
    position: fixed;
    z-index: 100;
    bottom: 166px;
    display: flex;
    background-color: #000;
    border-radius: 26px;
    li {
        color: #fff;
        font-size: 14px;
        margin: 16px 10px;
        cursor: pointer;
        transition: all .3s ease;
        position: relative;
        &:not(:last-child):after {
            content: "";
            position: absolute;
            height: 12px;
            width: 1px;
            background-color: #fff;
            opacity: .8;
            top: 3px
        }

        &:hover {
            color: #ef5b09
        }

        a {
            color: #fff;
            transition: all .3s ease;
            &:hover {
                color: #ef5b09
            }
        }
    }
}

[dir=ltr] .footer {
    left: 40px;
    li {
        &: not(:last-child):after {
            right:-10px
        }
    }
}

[dir=rtl] .footer {
    right: 40px;
    li {
        &: not(:last-child):after {
            left:-10px
        }
    }
}

.contact-us {
    background-color: #000;
    color: #fff;
    text-align: center;
    padding: 12px 0;
    .contact-us-text {
        font-size: 18px;
        margin: 4px 0;
        line-height: 20px;
        opacity: .86;
        a {
            color: #fff
        }
    }

    .contact-title {
        font-size: 24px;
        font-weight: 500;
        margin-bottom: 14px;
        opacity: 1
    }

    .copyright {
        margin-top: 12px
    }
}

@media screen and (min-width: 1068px) and (max-width:1520px) {
    .download-appstore {
        margin-top:7rem
    }

    .image-wrapper {
        top: -11%
    }

    [dir=ltr] .image-wrapper {
        right: 18%
    }

    [dir=rtl] .image-wrapper {
        left: 18%
    }
}

@media screen and (max-width: 1068px) {
    .section {
        overflow-y:auto
    }

    .download-title {
        justify-content: center;
        margin-bottom: 2rem
    }

    .group {
        flex-direction: column
    }

    .front-svg {
        transform: scale(.71);
        top: calc(-16em - 1px)
    }

    .back-svg {
        transform: scale(.7);
        top: -16em
    }

    .url-wrapper {
        width: 100%
    }

    [dir=ltr] .image-wrapper {
        left: 50%;
        transform: translateX(-60%);
        right: 0
    }

    [dir=rtl] .image-wrapper {
        right: 50%;
        transform: translateX(60%);
        left: 0
    }

    [dir=ltr] .footer {
        left: 0
    }

    [dir=rtl] .footer {
        right: 0
    }
}

@media screen and (max-width: 800px) {
    .van-nav-bar {
        display:none!important
    }

    .group {
        justify-content: normal
    }

    .back-svg,.front-svg,.soglan {
        display: none
    }

    .section {
        padding: 0
    }

    .download-appstore {
        margin-top: 0;
        margin-bottom: 0
    }

    .download-wrapper {
        flex-direction: row
    }

    [dir=ltr] .image-wrapper {
        transform: translateX(-50%)
    }

    [dir=rtl] .image-wrapper {
        transform: translateX(50%)
    }

    .footer {
        position: relative;
        margin: 90px auto 20px;
        bottom: 0
    }

    .contact-us {
        .contact-us-text {
            font-size: 14px
        }

        .contact-title {
            font-size: 20px
        }
    }
}