@charset "UTF-8";
/* CSS Document */

/* ---------- COMMON ---------- */
/* page title */
.page_title{
    background-image: url(../images/ambassador/bg_ambassador.jpg);
    background-repeat: no-repeat;
    background-position: center top;
    color: #ffffff;
    text-align: center;
}

.page_title h1{
    background-color: rgba(0,0,0,0.3);
}

.page_title h1 span{
    font-weight: 400;
    display: block;
    margin-bottom: 10px;
}

/* article list */
.article_list details{
    border-bottom: solid 1px #41616f;
    position: relative;
}

.article_list details summary {
    align-items: center;
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    padding-right: 1em;
    position: relative;
}

.article_list details summary::-webkit-details-marker {
    display: none;
}

.article_list details summary::before,
.article_list details summary::after {
    width: 1px;
    background-color: #41616f;
    content: '';
}

.article_list details summary::before {
    position: absolute;
    right: 1em;
    rotate: 90deg;
}

.article_list details summary::after {
    transition: rotate .3s;
}

.article_list details[open] summary::after {
    rotate: 90deg;
}

.article_list details summary dl{
    width: 100%;
}

.article_list details ol{
    transform: translateY(-10px);
    opacity: 0;
    transition: transform .5s, opacity .5s;
}

.article_list details[open] ol {
    transform: none;
    opacity: 1;
}
.article_list details ol li{
    margin-bottom: 10px;
    margin-left: 4px;
    margin-right: 4px;
    list-style: none;
}

/* ---------- Mobile ---------- */
@media(max-width:737px) {
    /* article list */
    .article_list details summary::before,
    .article_list details summary::after {
        height: 24px;
    }

    .article_list details ol li img{
        width: 200px;
    }

    .article_list details summary dl dt{
        font-size: 0.875rem;
    }

    .article_list details summary dl dd{
        padding-right: 10px;
    }
}

/* ---------- Mobile / Tablet ---------- */
@media(max-width:1022px){
/* page title */
    .page_title{
        background-size: cover;
        padding-top: 40px;
        padding-bottom: 40px;
        margin-bottom: 40px;
    }

    .page_title h1{
        padding-top: 15px;
        padding-bottom: 15px;
    }

    .page_title h1 figure img{
        width: 320px;
    }

    /* article list */
    .article_list{
        margin-left: 20px;
        margin-right: 20px;
        padding-bottom: 30px;
    }
    
    .article_list details{
        margin-bottom: 20px;
        padding-bottom: 20px;
    }

    .article_list details summary figure{
        padding-right: 10px;
    }

    .article_list details summary figure img{
        width: 80px;
    }

    .article_list details ol{
        padding-top: 10px;
        text-align: center;
    }
    
    .article_list details ol li{
        display: inline-block;
    }
}

/* ---------- Tablet / PC ---------- */
@media (min-width: 738px) {
/* article list */
    .article_list details summary::before,
    .article_list details summary::after {
        height: 35px;
    }

    .article_list details ol li img{
        width: 250px;
    }
}

/* ---------- Tablet ---------- */
@media(max-width:1022px) and (min-width: 737px){}

/* ---------- PC ---------- */
@media(min-width:1023px){
/* page title */
    .page_title{
        background-size: cover;
        margin-bottom: 40px;
        padding-top: 56px;
        padding-bottom: 103px;
    }

    .page_title h1{
        padding-top: 28px;
        padding-bottom: 20px;
    }

/* article list */
    .article_list{
        margin-left: auto;
        margin-right: auto;
        padding-bottom: 50px;
        width: 1038px;
    }

    .article_list details{
        margin-bottom: 30px;
        padding-bottom: 30px;
    }

    .article_list details summary figure{
        padding-right: 25px;
    }

    .article_list details summary figure img{
        width: 120px;
    }

    .article_list details summary dl dt{
        font-size: 1.125rem;
        margin-bottom: 12px;
    }

    .article_list details summary dl dd{
        font-size: 1.5rem;
    }

    .article_list details ol{
        display: flex;
        flex-wrap: wrap;
        padding-top: 30px;
    }
}