.div1200 {
    max-width: 100%;
}

.section {
    padding: 0 2%;
}

.fp-tableCell {
    vertical-align: top;
}

.item-lf {
    width: 100%;
    padding-top: 5%;
    height: 100svh;
    min-height: 100vh;
    box-sizing: border-box;
}

.section1 .item-ri {
    top: 45%;
    width: 100%;
}

.logo {
    margin-top: 0;
    width: 70%;
}

.item-lf-t {
    justify-content: center;
}

.item-1-c {
    position: absolute;
    bottom: 15%;
    margin-top: 0;
    width: 100%;
}

.item-1-c .item-1-code {
    display: none;
}

.bottom_info {
    width: 100%;
    font-size: 12px;
    line-height: 22px;
}

.item-1-btn {
    display: flex;
    justify-content: space-between;
    align-items: center;
    min-width: 100%;
}

.item-1-btn a {
    font-size: 16px;
    line-height: 30px;
    min-width: 22%;
}

.item-1-btn a:not(:last-child) {
    margin-bottom: 0;
}

/* 第二屏 */

.section3 .item-3-ri {
    width: 100%;
}

.section3 .item-3-c {
    text-align: center;
}

.section3 .item-3-c img {
    width: 70%;
}

.section3 .item-3-b {
    position: absolute;
    bottom: 15%;
    margin-top: 0;
    text-align: center;
}

.section3 .item-3-b img {
    width: 60%;
}

/* 第三屏 */
.section4 {
    padding-top: 5%;
    box-sizing: border-box;
}

.section4 .fl {
    float: none;
}

.item-4-box {
    width: 100%;
}

.section4 .item-ris {
    width: 100%;
}

.section4 .item-center-box {
    width: 50%;
    left: 0;
    bottom: 30%;
    top: auto;
}

.section4 .item-right-box {
    width: 80%;
    right: 0;
    bottom: 35%;
    top: auto;
}

.section4 .item-2-b {
    margin-top: 5%;
}

.item-4-c,
.item-4-b {
    display: flex;
    justify-content: center;
    width: 100%;
}

.item-4-c img,
.item-4-b img {
    width: 50%;
}

.section4 .model2 {
    height: 100%;
}