.page-main section {
    width: 1200px;
    margin: 0 auto;
}

.page-main section .page-items {
    display: flex;
    justify-content: flex-start;
    flex-wrap: wrap;
    margin-top: 46px;
    margin-left: -20px;
    margin-right: -20px;
    min-height: 400px;
}

.page-main section .page-items .page-item {
    width: 33%;
    margin-bottom: 43px;
    cursor: pointer;
    padding-left: 1%;
    padding-right: 10px;
    box-sizing: border-box;
}

.page-main section .page-items .page-item div.item {
    background: #f5f5f5;
    border-radius: 8px;
    padding: 20px;
    display: flex;
    justify-content: flex-start;
    align-items: flex-start;
    transition: all 0.3s ease;
}
.page-main section .page-items .page-item div.item:hover {
    background: #eeeeee;
    box-shadow: 0 2px 8px rgba(0,0,0,0.1);
}

.page-main section .page-items .page-item div.item .cover {
    width: 120px;
    min-width: 120px;
    overflow: hidden;
    margin-right: 15px;
}

.page-main section .page-items .page-item div.item .cover img {
    width: 100%;
}

.page-main section .page-items .page-item div.item .content {
    flex: 1;
    min-width: 0;
}

.page-main section .page-items .page-item div.item .content .title {
    font-family: Source Han Sans CN, Source Han Sans CN;
    font-weight: 500;
    font-size: 18px;
    color: #000000;
    line-height: 24px;
    text-align: left;
    margin-bottom: 8px;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.page-main section .page-items .page-item div.item .content .desc {
    font-family: Source Han Sans CN, Source Han Sans CN;
    font-weight: 400;
    font-size: 14px;
    color: #666666;
    line-height: 20px;
    text-align: left;
    display: -webkit-box;
    overflow: hidden;
    -webkit-line-clamp: 3;
    -webkit-box-orient: vertical;
}

@media screen and (max-width: 700px) {
    .page-main section {
        width: 100%;
        padding: 0 26px;
    }

    .page-main section .page-items .page-item {
        width: 100%;
        margin-bottom: 20px;
    }

    .page-main section .page-items .page-item div.item .content {
        padding: 10px;
    }

    .page-main section .page-items .page-item div.item .content .title {
        font-size: 1.125rem;
    }
}