body, p, h1, h2, h3, h4, h5, h6, ul, ol, dl, li, dt, dd, section {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

* {
    outline: none;
}

div, ul, h1, h2, h3, h4, h5, h6 {
    box-sizing: border-box
}

ul, ol, li {
    list-style: none
}

a {
    text-decoration: none;
}

html, body {
    background-color: #f1f1f1;
    display: flex;
    flex-direction: column;
    min-height: 100vh;
    align-items: center;
}

p {
    text-align: justify;
    text-justify: inter-ideograph;
}

em {
    font-style: inherit;
}


.main_wrap {
    background: #fff;
    height: 100vh;
    width: 26.125rem;
    box-shadow: 2px 3px 10px #999;
    overflow-y: scroll;
}

/**滚动条START**/
.main_wrap::-webkit-scrollbar {
    width: .25rem;
}

.main_wrap::-webkit-scrollbar-track {
    background: #fff;
    border-radius: .25rem;
}

.main_wrap::-webkit-scrollbar-thumb {
    background: #c1c1c1;
    border-radius: .25rem;
    border: .125rem solid #c1c1c1;
}

/**滚动条END**/

.s1 {
    background: linear-gradient(180deg, #C7E8FF 0%, #FFFFFF 28%, #FFFFFF 100%);
    width: 100%;
    display: flex;
    flex-direction: column;
    align-items: center;
}

.s1 .logo_wrap {
    margin-left: 1rem;
    height: 3.5rem;
    margin-right: auto;
    align-items: center;
    display: flex;
}

.s1 .logo_wrap img {
    height: 35px;
    width: auto;
}

.s1 .con {
    flex-direction: column;
    margin-top: 1.5rem;
    display: flex;
    align-items: center;
}

.s1 .con .banner {
    width: calc(100% - 2rem);
    height: auto;
    margin-top: 1rem;
}

.s1 .con .desc {
    font-size: 1rem;
    color:#9B9B9B ;
    font-family: fangsong;
    margin-top: .5rem;
}

.s1 .con .name {
    color: #333;
    justify-content: flex-start;
    font-weight: bold;
    font-size: 2rem;
    align-items: initial;
}

.s1 .index-btn_wrap {
    display: flex;
    margin-top: 1rem;
    flex-direction: column;
    align-items: center;
}

.s1 .con .banner-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(90deg, #2C60F4 0%, #50A0EF 100%);
    text-align: center;
    color: #fff;
    font-weight: bold;
    gap: .5rem;
    width: 13.125rem;
    height: 2.875rem;
    font-size: 1rem;
    border-radius: 1.4rem;
}

.s1 .con .banner-btn:before {
    content: '';
    width: 1.5rem;
    height: 1.5rem;
    background: url("../img/icon-down.svg");
    background-size: 1.5rem;
}

.s1 .con .banner-btn.android-btn:before {
    background: url("../img/icon-down-android.png");
    background-size: 1.5rem;
}

.s1 .con .banner-btn.ios-btn:before {
    background: url("../img/icon-down-ios.png");
    background-size: 1.5rem;
}


.index-btn_wrap {
    position: relative;
    cursor: pointer;
}

.index-code-box {
    display: flex;
    align-items: flex-end !important;
    justify-content: center !important;
    width: 11.1875rem !important;
    height: 12.3125rem !important;
    background: url(../img/code-box.png);
    background-size: 11.1875rem 12.3125rem;
    position: absolute;
    top: 3rem;
    /* left: 28%; */
    display: none !important;
}

.index-code-box .index-code {
    margin-bottom: 1.5rem;
}

.index-code-box .index-code img {
    width: 8.5rem !important;
    height: 8.5rem !important
}

.s1 .down-base-info {
    color: #3C7EF1;
    text-align: center;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: .875rem;
    margin-top: 0.5rem;
    gap: 0 .5rem;
    flex-wrap: wrap;
}

.s1 .down-base-info em {
    all: unset;
    font-style: normal;
}

.s1 .index-device-desc {
    color: #3C7EF1;
    text-align: center;
    font-size: .875rem;
    margin-top: 0.5rem;
}

.s3 {
    display: flex;
    flex-direction: column;
    align-items: center;
    row-gap: 2.5rem;
    margin-top: 2.5rem;
    padding: 0 1rem;
}

.s3 .row {

    display: flex;
    justify-content: center;
    align-items: center;
    column-gap: 4.25rem;
    width: 100%;
    height: auto;
    flex-direction: column !important;
    row-gap: 1.5rem;
    background-color: #fff;
}

.s3 .row:nth-child(even) {
    flex-direction: row-reverse;
}

.s3 .row .info {
    display: flex;
    align-items: center;
    flex-direction: column;
    width: 100%
}

.s3 .row .info .name {
    font-weight: 600;
    font-size: 1.25rem;
    color: #326BFF;
    margin-top: 0.5rem;
}

.s3 .row .info .name2 {
    font-size: 1.45rem;
    font-weight: bold;
    color:#333;
    letter-spacing: .1rem;
}

.s3 .row .info .desc {
    font-size: 0.875rem;
    color: #666;
    line-height: 1.625rem;
    margin-top: 1rem;
}

.s3 .row > img {
    width: 15rem;
    height: auto;
}

.footer {
    text-align: center;
    width: 100%;
    background-color: #1A1A1A;
    padding: 1rem 1rem;
    margin-top: 1rem;
}

.footer p {
    font-weight: normal;
    color: #fff;
    margin-top: 0;
    text-align: center;
    font-size: .75rem;
    margin-bottom: 0;
    line-height: 1.25rem;
}

.footer .friend-link {
    display: flex;
    align-items: center;
    flex-wrap: wrap;
    justify-content: center;
    gap: 0 .5rem;
}

.footer a {
    font-size: .75rem;
    color: #fff;
}


.to_top {
    position: fixed;
    right: 1rem;
    bottom: 4.5rem;
    cursor: pointer;
    display: none;
}

.to_top img {
    width: 3rem;
    height: 3rem;
}

@media (min-width: 600px) {
    .to_top {
        right: calc(50vw - 12rem);
    }
}