body{
    margin: 0;
    padding: 0;
    color: #333333;
    font-size: 16px;
    font-family: YuGothic,'游ゴシック','Yu Gothic',sans-serif;
}
.container{
    margin: 0 auto;
    width: 100%;
}
/* header area */
.header-area{
    margin: 0 auto;
    padding: 0 15px;
}
.header-top{
    margin: 20px auto;
    padding: 0;
    display: flex;
    justify-content: space-between;
    align-items: center;
    width: 100%;
}
.header-area .logo-area h1{
    margin: 0;
    padding: 0;
    text-indent:100%;
	white-space:nowrap;
    overflow:hidden;
    width: 266px;
    height: 46px;
    background-image: url(../img/header-logo.png);
    background-repeat: no-repeat;
    background-position: center center;
    background-size: 266px 46px;
}
.header-link {
    display: flex;
    align-items: center;
    flex-direction: row;
}
.sns-link {
    margin-right: 20px;
}
/* layerslider area*/
#layerslider-container{
    margin: 0;
    padding: 0;
}
.ls-layer{
    position:relative;
}
.layer-text {
    display: inline-block;
    margin: 0 auto;
    padding: 0 15px;
}
.ls-s1.siteContent{
    margin: 90px auto 30px !important;
    text-align: center;
}
#layerslider .layer-title{
    max-width: 480px;
    width: 100%;
}
#layerslider .layer-title img{
    width: 100%;
}
#layerslider .layer-content{
    color: #F0F0F0;
    font-size: 15px;
    font-weight: bold;
    line-height: 180%;
    letter-spacing: 4px;
}
#layerslider .siteContent{
    position: relative;
}

/* main area*/
.main-area{
    margin: 0 auto;
    width: 100%;
}
/* 新着情報 */
#news-area{
    margin: 60px auto;
    width: 100%;
}
.entry-title{
    margin: 0 auto;
    text-align: center;
}
.entry-title h2{
    position: relative;
    display: inline-block;
    margin: 10px auto 60px;
    padding: 3px 30px;
    font-size: 36px;
    font-weight: bold;
    text-align: center;
    line-height: 120%;
    letter-spacing: 2px;
    background-color: #ffffff;
}
#news-area .entry-title h2::before,
#news-area .entry-title h2::after,
#seminar-area .entry-title h2::before,
#seminar-area .entry-title h2::after{
    display: inline-block;
    position: absolute;
    content: '';
    top: 0;
    width: 10px;
    height: 100%;
    border-top: solid 1px #333333;
    border-bottom: solid 1px #333333;
}
#news-area .entry-title h2::before,
#seminar-area .entry-title h2::before{
    left: 0;
    border-left: solid 1px #333333;
}
#news-area .entry-title h2::after,
#seminar-area .entry-title h2::after{
    right: 0;
    border-right: solid 1px #333333;
}
.entry-title .sub-title{
    color: #37AAFF;
    font-size: 16px;
    font-weight: bold;
    line-height: 120%;
    letter-spacing: 2px;
}
#news-area .news-lists {
    padding: 0 15px;
}
#news-area .list-item {
    padding: 20px;
    display: flex;
    flex-direction: row;
    align-items: center;
    border-bottom: 1px solid #DDDDDD;
}
#news-area .list-item:first-child{
    border-top: 1px solid #DDDDDD;
}
#news-area .list-item-time{
    margin-right: 60px;
    font-size: 15px;
    font-weight: 500;
    line-height: 120%;
}
#news-area .list-item h3{
    margin: 0;
}
#news-area .list-item h3 a{
    color:#005BA0;
    font-size: 16px;
    font-weight: bold;
    line-height: 120%;
    text-decoration: none;
}
#news-area .list-item:hover h3 a{
    opacity: .7;
    transition: .5s;
    text-decoration: underline;
}
/*研究室一覧*/
#laboratory-area{
    margin: 40px auto;
    width: 100%;
    background-image: url(../img/laboratory-bg1.jpg);
    background-repeat: no-repeat;
    background-position: center bottom;
    background-size: auto auto;
}
#laboratory-area .entry-title{
    margin: 0 auto;
    padding: 90px 15px;
    text-align: center;
}

#laboratory-area .entry-title .sub-title{
    color: #ffffff;
}
#laboratory-area .entry-title h2{
    color: #ffffff;
    background-color: transparent;
}

/* 研究室 area */
#mineral-area,
#tectonics-area,
#biosphere-area{
    margin: 60px auto;
    text-align: center;
}
.research-subject {
    width: 100%;
}
.research-title h2 {
    margin: 0 auto;
    padding: 15px 15px;
    color: #ffffff;
    font-size: 26px;
    font-weight: bold;
    line-height: 120%;
    letter-spacing: 2px;
    background: linear-gradient( 90deg, #005CA1, #008FF9);
}
.research-content{
    display: flex;
    flex-direction: row;
    border: 1px solid #AAAAAA;
}
.research-left,
.research-right{
    padding: 20px 20px;
    width: 50%;
    text-align: left;
}
.research-left{
    border-right: 1px solid #AAAAAA;
}
.research-content p {
    margin: 10px;
    color: #333333;
    font-size: 18px;
    font-weight: bold;
    line-height: 200%;
}
.research-content p span{
    display: inline-block;
    margin-right: 15px;
    padding: 2px 4px;
    width: 60px;
    text-align: center;
    color: #FFFFFF;
    font-size: 13px;
    font-weight: bold;
    line-height: 180%;
    letter-spacing: 2px;
    background-color: #777777
}
#seminar-area{
    margin: 0 auto 60px;
}
#seminar-area .entry-title h2{
    margin: 10px auto 30px;
}
#seminar-area .entry-title .sub-content{
    margin-bottom: 30px;
    font-size: 16px;
    font-weight: bold;
    line-height: 120%;
    letter-spacing: 2px;
}
.seminar-list {
    padding: 20px 40px;
    border: 1px solid #DDDDDD;
}
#seminar-area .list-title h3{
    padding: 2px 10px 2px 20px;
    font-size: 18px;
    font-weight: bold;
    line-height: 120%;
    border-left: 5px solid #005CA1;
}
#seminar-area .list-items-content ul{
    padding-left: 10px;
}
#seminar-area .list-items-content ul li{
    list-style: none;
    font-weight: 500;
    line-height: 150%;
    letter-spacing: 2px;
}
#seminar-area .list-items-content ul li span{
    color: #005A9F;
    font-weight: bold;
}
#seminar-area .seminar-btn {
    margin: 30px auto;
    text-align: center;
}
#seminar-area .seminar-btn a{
    display: inline-block;
    padding: 10px 5px;
    width: 200px;
    text-align: center;
    color: #005A9F;
    font-size: 16px;
    font-weight: bold;
    line-height: 120%;
    letter-spacing: 2px;
    border:1px solid #005BA0;
    text-decoration: none;
}
#seminar-area .seminar-btn a:hover{
    opacity: .7;
    transition: .5s;
    text-decoration: underline;
}

.research-subject h2 a{
    color: #ffffff;
    text-decoration: none;
}
.research-content a{
    color: #333333;
    text-decoration: none;
}
.research-subject h2 a:hover,
.research-content a:hover{
    opacity: .7;
    transition: .5s;
    text-decoration: underline;
}

/* footer area */
.footer-area{
    margin: 0 auto;
    width: 100%;
    text-align: center;
    color: #ffffff;
    background-color: #004477;
}
.footer-area .copyright-area{
    padding: 30px;
    font-size: 14px;
    font-weight: bold;
    text-align: center;
    line-height: 120%;
}
#page_top {
    position: fixed;
    bottom: 25px;
    right: 20px;
}
#page_top a {
    padding: 10px 10px;
    color: #fff;
    text-align: center;
    text-decoration: none;
    background-color:#004477;
    border: 1px solid #ffffff;
}
#page_top a:hover {
    background-color: rgba(55, 170,255, .7);
    text-decoration: none;
}

@media screen and (min-width:1200px){
    .container{
        max-width: 1130px;
    }
}
@media screen and (max-width:767px){
    #news-area .list-item{
        flex-direction: column;
        align-items: inherit;
    }
    #news-area .list-item-time{
        margin-right: 0;
    }
    #news-area .list-item h3{
        margin-top: 10px;
    }
    .research-content{
        flex-direction: column;
    }
    .research-left,
    .research-right{
        padding: 20px 0;
        width: 100%;
    }
    .research-left{
        border-right: 0;
        border-bottom: 1px solid #AAAAAA;
    }
    #layerslider .layer-content br{
        display: none;
        text-align: left;
    }
}
@media screen and (max-width:575px){
    .header-top{
        position: relative;
        display: flex;
        flex-direction: column-reverse;
    }
    .logo-area {
        position: relative;
        margin-top: 60px;
    }
    .header-link{
        position: absolute;
        top: 0;
        right: 15px;
    }
    #mineral-area,
    #tectonics-area,
    #biosphere-area {
        margin: 30px auto;
        padding: 0 15px;
    }
    #seminar-area{
        padding: 0 15px;
    }
    #layerslider .layer-content{
        text-align: left;
    }
    #page_top {
        bottom: 80px;
        right: 15px;
    }
    .footer-area .copyright-area {
        padding: 30px 15px;
    }
}
@media screen and (min-width:992px) and (max-width:1199px){
    .container{
        max-width: 960px;
    }
}

@media screen and (min-width:768px) and (max-width:991px){
    .container{
        max-width: 720px;
    }
}
@media screen and (min-width:576px) and (max-width:767px){
    .container{
        max-width: 540px;
    }
}