.desktop {
    color: #fff;
    width: 100%;
    height: 100vh;
    /* 以视口高度为准，便于侧图拉满屏幕 */
    font-size: 0px;
    overflow: hidden;
}

* {
    -webkit-user-drag: none;
    box-sizing: border-box;
}

.desktop .fixed-bg {
    position: absolute;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    z-index: -1;
    overflow: hidden;
    object-fit: cover;
}

.desktop .fixed-bg * {
    object-fit: cover;
}

.content {
    display: flex;
    justify-content: space-between;
    flex-direction: column;
    height: 100%;
    overflow: hidden;
}

.top {
    padding: 20px 40px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.desktop .contact {
    display: flex;
    z-index: 5;
}

.slg {
    object-fit: contain;
}

.bottom {
    flex: 1;
    display: flex;
    justify-content: space-around;
    align-items: center;
    overflow: visible;
    /* 允许左右大图超出 bottom 区域可见 */
}

.main-left {
    height: 100%;
    flex: 1;
    display: flex;
    flex-direction: column;
}


.downloadArea {
    position: absolute;
    bottom: 7vw;
    right: 5vw;
    width: 200px;
    z-index: 3;
}

.picQr {
    position: absolute;
    right: 0;
    width: 165px;
    height: 150px;
}

.title {
    position: relative;
    width: 50%;
    margin: 0;
    object-fit: contain;
    z-index: 1;
    /* 让左右图片覆盖在其上 */
}

.content .qrcode-box {
    position: relative;
    top: 15px;
    left: 68px;
    font-size: 0;
    display: inline-block;
    width: 125px;
    height: 120px;
    box-sizing: border-box;
}


.inside {
    border-radius: 10px;
    background: #fff;
    /* background: #66120f; */

    height: 100%;
}


.btn-right {
    margin-left: 2vw;
}

#qrcode img {
    visibility: visible !important;
}

.btn-box {
    display: flex;
    align-items: center;
    flex-direction: column;
    justify-content: space-around;
}

.btn-box .btn {
    display: inline-block;
    border: none;
    outline: none;
    cursor: pointer;
    transition: all .3s ease;
    background: transparent;
    font-size: 24px;
}

.btn-box img {
    width: 100%;
}

.btn-box .btn:hover {
    transform: translateY(-4px) scale(1.05)
}


.image-container .image-fade {
    display: none;
}

.image-container .image-fade.active {
    display: none;
}

/* 三栏横排：左 slg1 | 中 title | 右 slg2 */
.banner-row {
    display: flex;
    align-items: center;
    justify-content: space-between;
    width: 100%;
    margin-top: -7vh;
    /* 整体向上微调 */
    position: relative;
}

/* 左右侧容器：撑满整屏高度 */
.banner-row .side {
    position: relative;
    width: 32%;
    height: 100vh;
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: visible;
    z-index: 2;
}

.banner-row .side.left {
    transform: translateX(2vw);
}

.banner-row .side.right {
    transform: translateX(-2vw);
}

.banner-row .side .slg {
    height: 100%;
    width: 120%;
    object-fit: contain;
}