@charset "UTF-8";

main{
    background-color: #edf5f5;
    color: #1b5e62;
    padding-bottom: 144px;
}

.main .container {
    padding: 0 24px 60px;
    min-height: calc( 100vh - 470px );
}

.backnumber-wrapper {
    padding: 0 0 60px;
}

.backnumber-wrapper h4{
    text-align: center;
}

.back-margin{
    display: flex;
    flex-wrap: wrap;
    justify-content: flex-start;
    padding-bottom: 0;
}

.news-item{
    width: 32%;
    margin: 0 2% 0 0;
    border-radius: 10px;
    background: #fff;
}
    
.news-item:nth-child(3n){
    margin: 0 0 0 0;
}

.news-item:nth-child(n+4) {
    margin-top: 24px;
}

.news-item a{
    display: block;
    color: #1b5e62;
}

.news-item img{
    width: 100%;
    height: 200px;
    object-fit: cover;
    border-radius: 10px;
}

.date{
    margin-top: 16px;
    font-family: 'Roboto', sans-serif;
    font-weight: 400;
    font-size: 14px;
    margin: 0;
    padding: 10px 15px 0;
    line-height: 1;
}

.title{
    margin: 0;
    padding: 8px 15px 15px;
    line-height: 1.5;
}


/* 各投稿ページ */
.detail-wrapper{
    margin-bottom: 80px;
}

.detail-wrapper h3{
    margin: 0 0 6px;
    padding: 0 0 10px;
    border-bottom: 1px solid #1b5e62;
}

.release{
    font-size: 14px;
    margin-bottom: 32px;
    text-align: right;
}

.link-btn{
    margin-top: 48px;
}

@media screen and (max-width:600px){

    .main .container {
        padding: 0 5% 30px;
    }
    
    .backnumber-wrapper {
        padding: 0 0 50px;
    }
    .news-item{
        width: 48%;
        margin: 0 0 0 0;
    }
    
    .news-item:nth-child(3n){
        margin: 0 0 0 0;
    }

    .news-item:nth-child(n+4) {
        margin-top: inherit;
    }
    
    .news-item:nth-child(2n){
        margin: 0 0 0 4%;
    }
    
    .news-item:nth-child(n+3) {
        margin-top: 15px;
    }

    .date{
        padding: 10px 10px 0;
    }

    .title{
        padding: 8px 10px 15px;
        font-size: 14px;
    }
    
    .detail-wrapper{
        margin-bottom: 60px;
    }
}