html {
    font-size: calc(100vw / 37.5);
}

* {
    margin: 0;
    padding: 0;
}

img {
    max-width: 100%;
    vertical-align: top;
}

.box {
    width: 100%;
    max-width: 75rem;
    margin: 0 auto;
    padding-top: 3.6rem;
    box-sizing: border-box;
    height: 100vh;
    background:  no-repeat;
    background-size: 100% 100%;
    position: relative;
}

.w-flex {
    display: flex;
    align-items: center;
}

.menu-box {
    position: absolute;
    left: calc(50% - 10.4rem);
    margin-bottom: 10%;
    height: 4.8rem;
}

.btn-img {
    display: flex;
    align-items: center;
    justify-content: center;
    align-content: center;
    width: 100%;
    height: 100%;
    font-size: 18px;
}

.menu-box .btn {
    margin-top: 2rem;
    width: 20.8rem;
    height: 4.8rem;
    background: linear-gradient(90deg, #FF5E16 0%, #FD2D06 100%);
    border-radius: 2.4rem;
    color: #FFF;
    display: none;
    align-items: center;
    justify-content: center;
    display: none;
}

.menu-box .icon {
    width: 2rem;
    height: 2rem;
    margin-right: 0.6rem;
}

.swiper-box {
    width: calc(100vw - 4rem);
    margin: 0 auto;
    background-color: #FFF;
    border-radius: 1.2rem;
    position: relative;
    overflow: hidden;
}
.swiper-item img {
    width: 100%;
    height: 100%;
}

.logo-box {
    width: 100%;
    margin: 7.8rem auto 0;
    display: flex;
    flex-direction: column;
    align-items: center;
}

.logo-box img {
    width: 7.2rem;
    height: 7.2rem;
}

.logo-label {
    margin-top: 1.6rem;
    color: #333;
    font-size: 2rem;
    font-weight: bold;
}

.service {
    /* 使img元素居中 */
    display: flex;
    align-items: center;
    justify-content: center;

    /* 设置按钮的位置 */
    position: fixed;
    left: 1rem;
    bottom: 50%;
    z-index: 9999;
}

.service img {
    width: 3rem;
}

.service_back {
    width: 5rem;
    height: 5rem;
    text-align: center;
    line-height: 3.5rem;
    visibility: hidden;
    /* 使img元素居中 */
    display: flex;
    align-items: center;
    justify-content: center;

    /* 设置按钮的位置 */
    position: fixed;
    left: 1rem;
    bottom: 50%;
    z-index: 9999;
    /*
    阴影
     */
}

.customer {
    width: 7.5rem;
    height: 7.5rem;
    text-align: center;
    line-height: 3.5rem;
    /* 使img元素居中 */
    display: flex;
    align-items: center;
    justify-content: center;

    /* 设置按钮的位置 */
    position: fixed;
    left: 1rem;
    bottom: 60%;
    z-index: 9999;
    /*
    阴影
     */
}

.kefu_tip {
    position: fixed;
    top: 30%;
    right: 0;
    z-index: 999999;
}

.kefu_div {
    width: 562px;
    z-index: 999999;
    height: 482px;
    position: fixed;
    bottom: 0;
    right: 5%;
}

.kefu_div iframe {
    border: 0px;
}

.kefu_close {
    position: absolute;
    right: 15px;
    top: 15px;
    width: 30px;
    height: 30px;
    border-radius: 50%;
    background-color: #000;
    color: #fff;
    cursor: pointer;
    line-height: 30px;
    text-align: center;
    font-size: 18px;
}

@media (max-width: 992px) {
    .kefu_div {
        width: 100%;
        height: 100%;
        right: 0;
    }
}

.swiper-slide img {
    width: 100%;
}

.logo-label img {
    width: 20px;
    height: 20px;
}

.btn-text {
    width: 100%;
}

.btn-text span {
    width: 100px;
    height: 20px;
    display: block;
    text-align: center;
    line-height: 20px;
    margin: 0 auto;
    margin-top: 90px;
    font-size: 16px;
    color: #f48585;
    font-weight: 900;
}

.tutorial {
    width: 100%;
    height: 100%;
    overflow: auto;
    position: absolute;
    top: 0px;
    left: 0px;
    right: 0px;
    bottom: 0px;
    z-index: 999;
    background: #fff;
    padding: 10px ;
    box-sizing: border-box;
    display: none;
}
.tutorial .tutorial-img{
    width: 90%;
    display: block;
    margin: 0 auto;
}
.tutorial .close-img{
    position: fixed;
    top: 10px;
    right: 10px;
    width: 40px;
    height: 40px;
    z-index: 999;
    border-radius: 50%;
    overflow: hidden;
    background: #ccc;
}
.kefu-icon {
    width: 85px;
    position: fixed;
    top: 40%;
    right: 0px;
    z-index: 99;
}

.kefu-icon img {
    width: 100%;
    display: block;
}

@keyframes xing {
    0% {
        transform: scale(0.9);
    }

    25% {
        transform: scale(1);
    }

    50% {
        transform: scale(0.9);
    }

    75% {
        transform: scale(1);
    }

    100% {
        transform: scale(0.9);
    }
}

.my_xing {
    -webkit-animation-name: xing;
    -webkit-animation-timing-function: ease-in-out;
    -webkit-animation-iteration-count: infinite;
    -webkit-animation-duration: 2s;
}