.top {
    position: relative;
    background-color: black;
    width: 100%;
    min-height: 600px;
    border-radius: 0 0 100px 100px;
    box-sizing: border-box;
    padding-top: 120px;
    text-align: center;

    .tem-how-we-can-help-img {
        width: 300px;
    }

    .tem-how-we-can-img {
        width: 100px;
    }

}

.top-text-box{
    position: relative;
    z-index:100;
    color:#ffffff;
    max-width: 1000px;
    display: inline-block;
    margin-top: 30px;
    text-align: center;
}

.top-logo-title {
    font-weight: bold;
    letter-spacing: 2px;
    text-align: center;
    position: relative;
    font-size: 50px;
    vertical-align: top;
    z-index:1;
    color:#FFFFFF;
}

.top-logo {
    display: inline-block;
    height: 100px;
    width: 100px;
    margin-bottom: -20px;
    /** 黑白滤镜 */
    filter: grayscale(100%);
    /* 动画 */
    animation: topLogoAnimation 5s linear infinite;
}

@keyframes topLogoAnimation {
    0% {
        filter: grayscale(100%);
    }
    50% {
        filter: grayscale(0%);
    }
    100% {
        filter: grayscale(100%);
    }
}


.top-back-img {
    width: 100%;
    height: 100%;
    position: absolute;
    top: 0;
    left: 0;
    z-index: 0;
    opacity: .5;
    border-radius: 0 0 100px 100px;
    /* 不变形*/
    object-fit: cover;
    /*高斯模糊*/
    filter: blur(10px);
    /*动画*/
    animation: backImg 10s linear infinite, topBackImgOpacity 13s linear infinite;
}


.top-bottom {
    display: none;
}

.top-bottom-line-box {
    position: relative;
    height: 30px;
    z-index: 100;
    margin-top: 10px;
    margin-bottom: 15px;
}

.top-bottom-line{
    z-index: 100;
    background-color: rgba(255,255,255,.2);
    height: 7px;
    width: 100px;
    position: absolute;
    left: 50%;
    top: 50%;
    transform: translate(-50%,-50%);
    border-radius: 20px;
}

.top-bottom-grid {
    display: grid;
    grid-template-columns: repeat(4,1fr);
    gap: 20px;
    padding: 2px;
    margin-top: -15px;
    text-align: center;
    margin-bottom: 10px;
}

.top-bottom-grid-item {
    text-align: center;
    border-radius: 10px;
    cursor: pointer;
    transition: all .3s;
    letter-spacing: 2px;
}

.top-bottom-grid-item:active {
    opacity: .6;
}

.top-bottom-grid-item-title {
    font-size: 14px;
    margin-top: 10px;
    color:#f0f0f0;
    /*  超出不换行  */
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.top-bottom-grid-item-tip {
    font-size: 12px;
    margin-top: 5px;
    color: #d0d0d0;
}

@keyframes backImg {
    0% {
        filter: blur(1px);
        height: 100%;
    }
    70% {
        filter: blur(10px);
        height: calc(100% + 10px);
    }
    100% {
        filter: blur(1px);
        height: 100%;
    }
}

@keyframes topBackImgOpacity {
    0% {
        opacity: 0.5;
    }
    50% {
        opacity: 1;
    }
    100% {
        opacity: 0.5;
    }
}

.top-text-in {
    font-size: 30px;
    display: inline-block;
    letter-spacing: 6px;
    font-weight: bold;
    text-align: center;
    text-shadow: 0 0 10px rgba(118, 118, 118, 0.5);
}
.top-back-img-mobile{
    display: none;
}
.top-text-line{
    height: 20px;
}

.top-text-small{
    font-size: 20px;
}

/* 手机适配 */
@media (max-width: 768px) {

    .top-text{
        width: 100%;
        padding-left: 20px;
        padding-right: 20px;
        box-sizing: border-box;
    }
    .top-bottom{
        display: block;
    }

    /*.top-back-img {*/
    /*    display: none;*/
    /*}*/

    .top-text-line{
        height: 5px;
    }

    .top-text-small{
        opacity: .95;
        font-weight: lighter;
    }

    .top-back-img-mobile{
        position: absolute;
        display: block;
        width: 50%;
        left: 50%;
        top: 120px;
        height: 80px;
        filter: blur(30px);
        animation: bodyImg 1.5s infinite;
    }

    @keyframes bodyImg {
        0% {
            filter: blur(30px);
            transform: translate(-50%, -50%) scale(1);
        }
        50% {
            filter: blur(20px);
            transform: translate(-50%, -50%) scale(.9);
        }
        100% {
            filter: blur(30px);
            transform: translate(-50%, -50%) scale(1);
        }
    }

    .top {
        min-height: 300px;
        padding-top: 80px;
        border-radius: 0 0 30px 30px;
        box-shadow: 0 0 10px rgba(0, 0, 0, .5);
    }

    .top-logo-title {
        font-size: 30px;
    }

    .top-logo {
        height: 60px;
        width: 60px;
        margin-bottom: -10px;
    }

    .top-back-img {
        border-radius: 0 0 30px 30px;
    }

    .top-text-in {
        font-size: 18px;
        letter-spacing: 2px;
    }

    .top-text-in div {
        font-size: 14px !important;
    }
}