.box4 {
    margin-top: 70px;
    padding: 60px 0;
    background: #F4F4F4;
}

.box4 .swiper-slide {
    position: relative;
}

.box4 .swiper-slide:nth-child(2n) .top {
    padding-top: 50%;
}

.box4 .swiper-slide .top img {
    display: block;
    margin: 0 auto;
    max-width: 50%;
}

.box4 .swiper-slide span {
    width: 100%;
    height: 54px;
    display: block;
    background: #fff;
    position: relative;
}

.box4 .swiper-slide span::after {
    content: "";
    display: block;
    width: 120%;
    height: 100px;
    background: url(https://ss-res.oss-cn-hangzhou.aliyuncs.com/site_res/180/20231108161738_NctIdnFw.png);
    background-size: 100% 100%;
    position: absolute;
    top: 100%;
}

.box4 .swiper-slide .text {
    margin-top: 45px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.box4 .swiper-slide .text h1 {
    color: #000;
    font-size: 18px;
    font-weight: 400;
    line-height: 1;
    margin-bottom: 15px;
}

.box4 .swiper-slide .text h2 {
    color: #898989;
    font-size: 14px;
    font-weight: 400;
    line-height: 1.5;
    text-transform: uppercase;
    margin: 0;
}

.box4 .swiper-slide .time {
    color: #999;
    font-size: 32px;
    line-height: 1;
}

@media screen and (max-width: 992px) and (min-width: 0px) {
    .box4 .swiper-slide .top img {
        max-width: 50%;
    }
}

@media screen and (max-width: 640px) and (min-width: 0px) {
    .box4 .swiper-slide span {
        height: 36px;
    }

    .box4 .swiper-slide .text {
        margin-top: 30px;
        display: flex;
        align-items: flex-start;
        flex-direction: column;
    }

    .box4 .swiper-slide .text h2 {
        font-size: 12px;
    }

    .box4 .swiper-slide .time {
        font-size: 24px;
    }
}

/* 相册组件 */
.bigimg {
    width: auto !important;
    height: auto !important;
    max-width: 60vw !important;
    max-height: 60vh !important;
    position: fixed;
    left: 0;
    top: 0;
    right: 0;
    bottom: 0;
    margin: auto;
    display: none;
    z-index: 9999;
    border: 0px solid #fff;
    object-fit: contain;
}

.mask {
    position: fixed;
    left: 0;
    top: 0;
    right: 0;
    bottom: 0;
    background-color: #000;
    opacity: 0.5;
    filter: Alpha(opacity=50);
    z-index: 98;
    transition: all 1s;
    display: none
}

.bigbox {
    width: 840px;
    background: #fff;
    border: 1px solid #ededed;
    margin: 0 auto;
    border-radius: 10px;
    overflow: hidden;
    padding: 10px;
}

.bigbox>.imgbox {
    width: 400px;
    height: 250px;
    float: left;
    border-radius: 5px;
    overflow: hidden;
    margin: 0 10px 10px 10px;
}

.bigbox>.imgbox>img {
    width: 100%;
}

.imgbox:hover {
    cursor: zoom-in
}

.mask:hover {
    cursor: zoom-out
}

.mask>img {
    position: fixed;
    right: 10px;
    top: 10px;
    width: 60px;
}

.mask>img:hover {
    cursor: pointer
}