.install .bg[data-v-574ae88d] {
    width: 100%;
    height: 800px;
    background-repeat: no-repeat;
    background-size: cover;
    background-position: 50%;
    overflow: hidden;
    position: relative
}

    .install .bg[data-v-574ae88d]:before {
        content: "";
        position: absolute;
        top: 0;
        left: 0;
        width: 100%;
        height: 100%;
        background-color: rgba(0,0,0,.1);
        transition: background-color .3s
    }

.install .bg .bg_t[data-v-574ae88d] {
    position: relative;
    font-weight: 600;
    font-size: 40px;
    line-height: 56px;
    color: #fff;
    text-align: left;
    margin-top: 109px;
    margin-left: 5vw;
    z-index: 2
}

.install .bg .bg_desc[data-v-574ae88d] {
    font-size: 16px;
    line-height: 18px;
    color: #fff;
    text-align: left;
    margin-top: 15px;
    margin-left: 5vw;
    position: relative
}

.install .bg .install_btn[data-v-574ae88d] {
    position: relative;
    width: 240px;
    display: inline-block;
    padding: 0 12px;
    height: 36px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #fff;
    background-color: var(--el-menu-active-color);
    font-size: 18px;
    margin-left: 5vw;
    margin-top: 70px;
    cursor: pointer
}

    .install .bg .install_btn[data-v-574ae88d]:hover {
        background-color: var(--btn-hover-bg-color);
        text-decoration: underline
    }

    .install .bg .install_btn[data-v-574ae88d]:active {
        background-color: var(--btn-active-bg-color)
    }

.install .tab[data-v-574ae88d] {
    display: flex;
    justify-content: center;
    margin-top: 37px
}

.install .tab .tab_item[data-v-574ae88d] {
    font-size: 27px;
    line-height: 37px;
    width: 172px;
    text-align: center;
    position: relative
}

.install .tab .tab_item.active[data-v-574ae88d]:before {
    content: "";
    position: absolute;
    width: 145px;
    height: 3px;
    background-color: rgba(219,7,23,.83);
    bottom: -10px;
    left: 50%;
    transform: translateX(-50%)
}

.install .tab .tab_item[data-v-574ae88d]:first-of-type {
    margin-right: 30px
}

.install .smf[data-v-574ae88d] {
    margin: 80px auto 0;
    width: 1280px;
    padding-bottom: 60px;
    box-shadow: 0 0 15px 0 rgba(0,0,0,.25)
}

.install .smf .title[data-v-574ae88d] {
    position: relative;
    font-size: 30px;
    font-weight: 600;
    line-height: 56px;
    letter-spacing: 5px;
    text-align: left;
    padding: 30px 80px
}

    .install .smf .title[data-v-574ae88d]:before {
        content: "";
        position: absolute;
        left: 60px;
        top: 50%;
        transform: translateY(-50%);
        width: 7px;
        height: 33px;
        background-color: #e70c1d
    }

.install .smf .title_r[data-v-574ae88d] {
    position: relative;
    font-size: 30px;
    font-weight: 600;
    line-height: 56px;
    letter-spacing: 5px;
    text-align: right;
    padding: 30px 80px
}

    .install .smf .title_r[data-v-574ae88d]:before {
        content: "";
        position: absolute;
        right: 60px;
        top: 50%;
        transform: translateY(-50%);
        width: 7px;
        height: 33px;
        background-color: #e70c1d
    }

.install .smf .content[data-v-574ae88d] {
    margin: 0 50px
}

.install .smf .content .content_item[data-v-574ae88d] {
    display: flex;
    justify-content: space-between
}

    .install .smf .content .content_item[data-v-574ae88d]:nth-of-type(2) {
        margin-top: 40px
    }

.install .smf .content .content_item .info[data-v-574ae88d] {
    padding-left: 20px
}

.install .smf .content .content_item .info .info_t[data-v-574ae88d] {
    font-size: 30px;
    line-height: 41px;
    text-align: left;
    color: #000;
    margin-left: 20px
}

.install .smf .content .content_item .info .info_r[data-v-574ae88d] {
    font-size: 30px;
    line-height: 41px;
    text-align: right;
    color: #000;
    margin-right: 40px
}

.install .smf .content .content_item .info .info_d[data-v-574ae88d] {
    font-size: 22px;
    line-height: 31px;
    margin-top: 22px;
    text-align: left;
    color: red;
    margin-left: 20px
}

.install .smf .content .content_item .info .info_d_r[data-v-574ae88d] {
    font-size: 22px;
    line-height: 31px;
    margin-top: 20px;
    margin-right: 40px;
    text-align: right;
    color: red
}

.install .smf .content .content_item .info .desc[data-v-574ae88d] {
    font-size: 18px;
    line-height: 23px;
    margin-top: 45px;
    text-align: left;
    color: #000;
    width: 490px;
    margin-left: 20px
}

.install .smf .content .content_item .info .desc_r[data-v-574ae88d] {
    font-size: 18px;
    line-height: 23px;
    margin-top: 45px;
    text-align: left;
    width: 490px;
    color: #000;
    margin-right: 20px
}

.install .smf .content .content_item .img[data-v-574ae88d] {
    width: 490px;
    height: 297px;
    flex-shrink: 0
}

.install .smf .content .content_item > video[data-v-574ae88d] {
    width: 490px;
    height: 297px
}

@media (max-width:1280px) and (min-width:800px) {
    .install .bg[data-v-574ae88d] {
        width: 100%;
        height: 480px;
        background-image: url(/img/eArc_install.9353328a.png);
        background-repeat: no-repeat;
        background-size: cover;
        background-position: 50%;
        overflow: hidden
    }

    .install .bg .bg_t[data-v-574ae88d] {
        font-weight: 600;
        font-size: 32px;
        line-height: 44.8px;
        color: #fff;
        text-align: left;
        margin-top: 87.2px;
        margin-left: 4vw
    }

    .install .bg .bg_desc[data-v-574ae88d] {
        font-size: 12.8px;
        line-height: 14.4px;
        color: #fff;
        text-align: left;
        margin-top: 12px;
        margin-left: 4vw
    }

    .install .bg .install_btn[data-v-574ae88d] {
        width: 192px;
        display: inline-block;
        padding: 0 9.6px;
        height: 28.8px;
        display: flex;
        align-items: center;
        justify-content: center;
        color: #fff;
        background-color: rgba(219,7,23,.83);
        font-size: 14.4px;
        margin-left: 4vw;
        margin-top: 56px;
        cursor: pointer
    }

        .install .bg .install_btn[data-v-574ae88d]:hover {
            background-color: transparent;
            color: rgba(219,7,23,.83);
            text-decoration: underline
        }

    .install .tab[data-v-574ae88d] {
        display: flex;
        justify-content: center;
        margin-top: 29.6px
    }

    .install .tab .tab_item[data-v-574ae88d] {
        font-size: 21.6px;
        line-height: 29.6px;
        width: 137.6px;
        text-align: center;
        position: relative
    }

    .install .tab .tab_item.active[data-v-574ae88d]:before {
        content: "";
        position: absolute;
        width: 116px;
        height: 2.4px;
        background-color: rgba(219,7,23,.83);
        bottom: -8px;
        left: 50%;
        transform: translateX(-50%)
    }

    .install .tab .tab_item[data-v-574ae88d]:first-of-type {
        margin-right: 24px
    }

    .install .smf[data-v-574ae88d] {
        margin: 64px auto 0;
        width: 1024px;
        padding-bottom: 48px;
        box-shadow: 0 0 12px 0 rgba(0,0,0,.25)
    }

    .install .smf .title[data-v-574ae88d] {
        position: relative;
        font-size: 24px;
        font-weight: 600;
        line-height: 44.8px;
        letter-spacing: 4px;
        text-align: left;
        padding: 24px 64px
    }

        .install .smf .title[data-v-574ae88d]:before {
            content: "";
            position: absolute;
            left: 48px;
            top: 50%;
            transform: translateY(-50%);
            width: 5.6px;
            height: 26.4px;
            background-color: #e70c1d
        }

    .install .smf .title_r[data-v-574ae88d] {
        position: relative;
        font-size: 24px;
        font-weight: 600;
        line-height: 44.8px;
        letter-spacing: 4px;
        text-align: right;
        padding: 24px 64px
    }

        .install .smf .title_r[data-v-574ae88d]:before {
            content: "";
            position: absolute;
            right: 48px;
            top: 50%;
            transform: translateY(-50%);
            width: 5.6px;
            height: 26.4px;
            background-color: #e70c1d
        }

    .install .smf .content[data-v-574ae88d] {
        margin: 0 40px
    }

    .install .smf .content .content_item[data-v-574ae88d] {
        display: flex;
        justify-content: space-between
    }

        .install .smf .content .content_item[data-v-574ae88d]:nth-of-type(2) {
            margin-top: 32px
        }

    .install .smf .content .content_item .info[data-v-574ae88d] {
        padding-left: 16px
    }

    .install .smf .content .content_item .info .info_t[data-v-574ae88d] {
        font-size: 24px;
        line-height: 32.8px;
        text-align: left;
        color: #000;
        margin-left: 16px
    }

    .install .smf .content .content_item .info .info_r[data-v-574ae88d] {
        font-size: 24px;
        line-height: 32.8px;
        text-align: right;
        color: #000;
        margin-right: 32px
    }

    .install .smf .content .content_item .info .info_d[data-v-574ae88d] {
        font-size: 17.6px;
        line-height: 24.8px;
        margin-top: 17.6px;
        text-align: left;
        color: red;
        margin-left: 16px
    }

    .install .smf .content .content_item .info .info_d_r[data-v-574ae88d] {
        font-size: 17.6px;
        line-height: 24.8px;
        margin-top: 16px;
        margin-right: 32px;
        text-align: right;
        color: red
    }

    .install .smf .content .content_item .info .desc[data-v-574ae88d] {
        font-size: 14.4px;
        line-height: 18.4px;
        margin-top: 36px;
        text-align: left;
        color: #000;
        width: 392px;
        margin-left: 16px
    }

    .install .smf .content .content_item .info .desc_r[data-v-574ae88d] {
        font-size: 14.4px;
        line-height: 18.4px;
        margin-top: 36px;
        text-align: left;
        width: 392px;
        color: #000;
        margin-right: 16px
    }

    .install .smf .content .content_item .img[data-v-574ae88d] {
        width: 392px;
        height: 237.6px;
        flex-shrink: 0
    }

    .install .smf .content .content_item > video[data-v-574ae88d] {
        width: 392px;
        height: 237.6px
    }
}

@media (max-width:768px) and (min-width:350px) {
    .install .bg[data-v-574ae88d] {
        height: 300px
    }

        .install .bg[data-v-574ae88d]:before {
            background-color: rgba(0,0,0,.3)
        }

    .install .bg .bg_t[data-v-574ae88d] {
        font-weight: 500;
        font-size: 24px;
        line-height: 30px;
        margin-top: 24px
    }

    .install .bg .install_btn[data-v-574ae88d] {
        margin-top: 20px
    }

    .install .tab[data-v-574ae88d] {
        margin-top: 24px
    }

    .install .tab .tab_item[data-v-574ae88d] {
        font-size: 20px
    }

    .install .smf[data-v-574ae88d] {
        width: 100%;
        margin-top: 34px
    }

    .install .smf .title[data-v-574ae88d] {
        font-size: 18px;
        padding: 12px 20px
    }

        .install .smf .title[data-v-574ae88d]:before {
            left: 8px;
            width: 6px
        }

    .install .smf .title_r[data-v-574ae88d] {
        font-size: 18px;
        padding: 12px 20px
    }

        .install .smf .title_r[data-v-574ae88d]:before {
            right: 8px;
            width: 6px
        }

    .install .smf .content[data-v-574ae88d] {
        margin: 0 12px
    }

    .install .smf .content .content_item[data-v-574ae88d] {
        display: flex;
        flex-direction: column
    }

    .install .smf .content .content_item .info[data-v-574ae88d] {
        padding-left: 0
    }

    .install .smf .content .content_item .info .info_t[data-v-574ae88d] {
        margin-left: 0;
        font-size: 24px
    }

    .install .smf .content .content_item .info .info_d[data-v-574ae88d] {
        margin-left: 0;
        font-size: 16px;
        margin-top: 0
    }

    .install .smf .content .content_item .info .desc[data-v-574ae88d] {
        margin-left: 0;
        margin-top: 12px;
        word-break: break-all;
        margin-right: 12px;
        width: 100%
    }

    .install .smf .content .content_item .info .info_d_r[data-v-574ae88d] {
        text-align: right;
        margin-top: 10px;
        font-size: 16px;
        margin-right: 0
    }

    .install .smf .content .content_item .info .desc_r[data-v-574ae88d] {
        width: 100%;
        word-break: break-all;
        margin-top: 10px
    }

    .install .smf .content .content_item > video[data-v-574ae88d] {
        margin-top: 10px;
        width: 100%;
        height: 230px
    }

    .install .smf .content .content_item[data-v-574ae88d]:nth-of-type(2) {
        flex-direction: column-reverse
    }

    .install .smf .content .content_item:nth-of-type(2) .info_r[data-v-574ae88d] {
        font-size: 24px;
        margin-right: 0
    }

    .install .smf .content .content_item:nth-of-type(2) .info_d_r[data-v-574ae88d] {
        margin-left: 0;
        margin-top: 10px
    }

    .install .smf .content .content_item:nth-of-type(2) .desc_r[data-v-574ae88d] {
        text-align: left;
        width: 100%;
        margin-left: 0;
        margin-top: 20px
    }
}