.card-box {
    display: flex;
    align-items: center;
    justify-content: center;
    background-image: var(--image);
    background-size: cover;
    background-repeat: no-repeat;
    width: 100%;
    padding: 4.8vw 0
}

.card {
    width: 62.5vw;
    display: flex;
    align-items: center;
    justify-content: space-between
}

.card-icon {
    width: 29.8vw
}

.card-info {
    width: 26.05vw
}

.button {
    width: 158px;
    height: 40px;
    border-radius: 4px;
    background-color: #0069ea;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    filter: brightness(1);
    transform: .3s;
    color: #fff
}

.card-title {
    font-size: 30px;
    margin-bottom: 31px;
    position: relative;
    line-height: 1.3
}

.card-title:before {
    content: var(--key);
    position: absolute;
    bottom: 100%;
    color: #0069ea;
    font-size: 2.6vw
}

.card-detail {
    font-size: 16px;
    margin-bottom: 52px
}

.button:hover {
    filter: brightness(1.2)
}

.container,.layout {
    width: 100%
}

.item-box {
    position: relative
}

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

.bg {
    background-size: 100% 108%
}

.item-title {
    display: flex;
    align-items: center;
    flex-direction: column;
    position: absolute;
    top: 55px;
    left: 0;
    right: 0
}

.main-title {
    font-size: 46px;
    font-weight: 500;
    line-height: 46px;
    margin-bottom: 22px;
    font-family: 思源黑体
}

.sub-title {
    font-size: 20px;
    font-weight: 400;
    line-height: 1.7
}

.ghost-btn {
    width: 106px;
    height: 40px;
    border-radius: 4px;
    color: #0082ff;
    border: 1px solid currentColor;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer
}

.scroll-box {
    width: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-top: 2.18vw;
    position: relative
}

.scroll-item {
    width: 16.7%;
    height: 15.21vw;
    background-size: 118% 118%;
    background-position: center
}

.change-btn {
    margin: 20px
}

.white-text {
    color: #fffc
}

.black-text {
    color: #777f8b
}

.img-box {
    line-height: 0
}

.button {
    width: 158px;
    height: 40px;
    border-radius: 4px;
    background-color: #0069ea;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    filter: brightness(1);
    transform: .3s;
    color: #fff
}

.button:hover {
    filter: brightness(1.2)
}