*{
    margin:0;
    padding:0;
    box-sizing:border-box;
}

.body{
    font-family:"Inter","Noto Sans JP",sans-serif;
    color:#222;
}





.hero{
    position:relative;
    width:100%;
    height:90vh;
    overflow:hidden;
}
.hero video{
    position:absolute;
    top:50%;
    left:50%;
    width:100%;
    height:100%;
    object-fit:cover;
    transform:translate(-50%,-50%);
}
.hero-overlay{
    position:absolute;
    inset:0;
    background:rgba(11,31,58,0.55);
}
.hero-text{
    position:absolute;
    top:50%;
    left:50%;
    transform:translate(-50%,-50%);
    color:white;
    font-size: 30px;
    z-index:2;
    text-align:center;
}
.hero-line {
    display: inline-block;
    opacity: 0;
    transform: translateY(40px);
    transition: opacity 0.8s ease, transform 0.8s ease;
}
.hero-line.show {
    opacity: 1;
    transform: translateY(0);
}
header{
    top:0;
    left:0;
    width:100%;
    height:90px;
    display:flex;
    align-items:center;
    justify-content:space-between;
    padding:0 8%;
    background:#000e24;
    box-shadow:0 2px 10px rgba(0,0,0,.08);
    z-index:1000;
}
header.fixed{
    position:fixed;
    top:0;
    left:0;
    width:100%;
}
.sub header{
    position:fixed;
    top:0;
    left:0;
    width:100%;
}
.labo-name h1{
    font-size:30px;
    font-weight:700;
    letter-spacing:1px;
    margin-left: auto;
    color:#ffffff;
}
.header-menu nav{
    display:flex;
    align-items:center;
    margin-left: 200px;
    gap:35px;
}
.header-menu a{
    text-decoration:none;
    color:#ffffff;
    font-size:18px;
    font-weight:600;
    transition:.3s;
}
.header-menu a:hover{
    color:#0066cc;
}
.header-menu a.active{
    color:#0066cc;
}
.lang-switch{
    display:flex;
    align-items:center;
    gap:8px;
    margin-left: 10px;
    font-size:16px;
    color:#ffffff;
}
.lang-switch a{
    text-decoration:none;
    color:#ffffff;
    font-weight:600;
}
.lang-switch a.active{
    color:#0066cc;
}
.lang-switch a:hover{
    color:#0066cc;
}
.hamburger{
    display:none;
    background:none;
    border:none;
    font-size:30px;
    cursor:pointer;
}





.home{
    width: 100%;
    padding: 100px;
    background-color:#000e24;
    border-top:5px solid #ffffff;
    border-bottom:5px solid #ffffff;
    
}
.welcome{
    text-align: center;
}
.welcome h1{
    font-size:30px;
    color:#000e24;
    color: white;
}
.welcome p{
    font-size:20px;
    font-weight: 700;
    line-height: 35px;
    color:#000e24;
    color: white;
    margin-bottom: 20px;
}





.top-research{
    width: 100%;
    padding: 100px;
    text-align: center;
    background:rgb(255, 255, 255);
    background-image: url("../images/bg02.png");
    background-size:cover;
    background-position:center;
    background-repeat:no-repeat;
}
.top-research h1{
    color: white;
    font-size: 30px;
    font-weight: 700;
}
.top-research-list{
    margin-top: 50px;
    gap:80px;
    text-align: center;
    justify-content:center;
    display: flex;
}
.top-research-list h2{
    font-size:25px;
    color:#000e24;
}
.top-research-list p{
    font-size:18px;
    font-weight: 700;
    line-height: 35px;
    color:#000e24;
    margin-top: 5px;
}
.top-research-item{
    padding: 50px;
    background:#ffffff;
    border-radius:15px;
    overflow:hidden;
    text-decoration:none;
    color:#222;
    box-shadow:0 10px 30px rgba(0,0,0,0.1);
    transition:.3s;
}
.top-research-item:hover{
    transform:translateY(-10px);
}
.more-btn{
    display:block;
    width:200px;
    margin:50px auto;
    padding:15px;
    text-align:center;
    background:#000e24;
    font-size:18px;
    color:white;
    text-decoration:none;
    border-radius:5px;
    transition:.3s;
}
.more-btn:hover{
    background:#0066cc;
    transform:translateY(-5px);
    box-shadow:0 15px 35px rgba(0,0,0,.15);
}
.top-news{
    width:80%;
    max-width:1000px;
    margin:100px auto;

}
.top-news h1{
    text-align: center;
    font-size:30px;
    font-weight: 700;
    color:#000e24;
    margin-bottom:40px;
}
.top-news-list{
    border-top:1px solid #ddd;
}
.top-news-item{
    display:flex;
    align-items:center;
    gap:50px;
    padding:25px 20px;
    border-bottom:1px solid #ddd;
    text-decoration:none;
    color:#222;
    transition:.3s;
}
.top-news-item:hover{
    background:#f5f7fa;
}
.top-news-item time{
    color:#0066cc;
    font-weight:600;
    min-width:100px;
    font-size:18px;
}
.top-news-item p{
    color: #000e24;
    font-weight: 700;
    margin:0;
    font-size:18px;
}





footer{
    background:#000e24;
    color:white;
    margin-top:120px;
}
.footer-content{
    width:60%;
    max-width:1200px;
    margin:auto;
    padding:30px 0;
    display:flex;
    justify-content:space-between;
    gap:100px;
}
.footer-left{
    flex:1;
}
.footer-left h1{
    font-size:20px;
    font-weight:700;
}
.footer-left p{
    line-height:1.5;
    margin-bottom:10px;
    color:#ffffff;
}
.footer-right{
    flex:1;
}
.footer-right ul{
    list-style:none;
    padding:0;
}
.footer-right li{
    margin-bottom:10px;
}
.footer-right a{
    color:white;
    text-decoration:none;
    transition:.3s;
}
.footer-right a:hover{
    color:#0066cc;
}
.footer-copy{
    border-top:1px solid rgba(255,255,255,.15);
    text-align:center;
    padding:15px;
    color:#cfd8dc;
    font-size:14px;
}





.research-top{
    width: 100%;
    margin-top: 90px;
    padding:30px;
    text-align: center;
    background-color: #000e24;
    border-top:3px solid #ffffff;

}
.research-top h1{
    font-size:30px;
    color:#ffffff;
}
.research{
    width: 100%;
    padding-top: 50px;
    text-align: center;
    background-image: url("../images/bg03.png");
}
.research-list{
    margin-top: 20px;
    gap:80px;
    text-align: center;
    display: flex;
    flex-direction:column;
    justify-content:center;
}
.research-list h2{
    font-size:25px;
    color:#000e24;
}
.research-list h3{
    font-size:20px;
    color:#000e24;
}
.research-list p{
    font-size:18px;
    font-weight: 700;
    line-height: 35px;
    color:#000e24;
    margin-top: 5px;
}
.research-item{
    display: flex;
    flex-direction: row;
    width:90%;
    padding: 5% 10%;
    gap:30px;
    background-color:#ffffff;
    background-color: #faf8ef;
    overflow:contain;
    text-decoration:none;
    flex:1;
    transition:.3s;
}
.research-item ul{
    text-align: center;
    list-style:none;
    padding:0;
}
.research-item li{
    font-size:18px;
    font-weight: 700;
    color:#000e24;
    padding:5px ;
    position:relative;

}
.research-item li::before{
    content:"";
    width:8px;
    height:8px;
    background:#0066cc;
    border-radius:50%;
    position:absolute;
    left:25%;
    top:50%;
    transform:translateY(-50%);
}
.research-item:nth-child(even){
    flex-direction:row-reverse;
    border-bottom-left-radius:100px;
    margin-right: 0px;
    margin-left:auto;
    margin-right:0;
}
.research-item:nth-child(odd){
    flex-direction:row;
    border-bottom-right-radius:100px;
    margin-left:0;
    margin-right:auto;
}

.research-item-left{
    display: flex;
    gap:30px;
    flex: 1;
}
.research-item-right{
    flex:1;
}
.research-item-left img{
    width:50%;
    height:auto;
    object-fit:contain;
    border-radius:10px;
}
.other-research{
    width:100%;
    padding: 5% 10% ;
    margin-top: 50px;
    text-align:left;
    background-color: #ffffff;
    border-top:3px solid #000e24 ;
}
.other-research h1{
    font-size: 30px;
    color: #000e24;
    text-align: left;
    border-bottom:2px solid #0066cc;
    padding-bottom: 10px;
    margin-bottom: 10px;
}
.other-research ul{
    list-style:none;
    padding:0;
}
.other-research li{
    font-size:18px;
    color:#000e24;
    padding:15px 20px;
    border-bottom:1px solid #ddd;
    position:relative;
}
/* 左側に青いマーク */
.other-research li::before{
    content:"";
    width:8px;
    height:8px;
    background:#0066cc;
    border-radius:50%;
    position:absolute;
    left:0;
    top:50%;
    transform:translateY(-50%);
}





.achievement-top{
    width: 100%;
    margin-top: 90px;
    padding:30px;
    text-align: center;
    background-color: #000e24;
    border-top:3px solid #ffffff;
    border-bottom:3px solid #ffffff;

}
.achievement-top h1{
    font-size:30px;
    color:#ffffff;
}
.achievement{
    width:80%;
    margin:0px auto;
}
.achievement-year{
    margin-top:50px;
}
.year h2{
    font-size:30px;
    color:#0066cc;
    text-align: left;
    border-bottom:2px solid #0066cc;
    padding-bottom:10px;
}
.achievement-category{
    margin-top:30px;
}
.achievement-category h3{
    font-size:24px;
    color:#000e24;
}
.achievement-category ul{
    list-style:none;
    padding:0;
}
.achievement-category li{
    padding:15px 0;
    border-bottom:1px solid #ddd;
    font-size:18px;
}




.news-top{
    width: 100%;
    margin-top: 90px;
    padding:30px;
    text-align: center;
    background-color: #000e24;
    border-top:3px solid #ffffff;
    border-bottom:3px solid #ffffff;

}
.news-top h1{
    font-size:30px;
    color:#ffffff;
}
.news{
    width:80%;
    max-width:1000px;
    margin:0px auto;
}
.news-item{
    padding:40px 0;
    margin-bottom: 30px;
}
.news-date h1{
    color:#0066cc;
    font-size:25px;
    font-weight:700;
    text-align: left;
    border-bottom:2px solid #0066cc;
    padding-bottom: 10px;
    margin-bottom: 10px;
}
.news-title h1{
    font-size:30px;
    font-weight: 700;
    color:#0B1F3A;
    margin-bottom:20px;
}
.news-text p{
    font-size:18px;
    font-weight: 700;
    line-height:2;
    color:#000e24;
}
.news-image{
    margin-top:30px;
}
.news-image img{
    width:100%;
    max-width:700px;
    height:auto;
    border-radius:15px;
    display:block;
}





.member-top{
    width: 100%;
    margin-top: 90px;
    padding:30px;
    text-align: center;
    background-color:#000e24;
    border-top:3px solid #ffffff;
    border-bottom:3px solid #ffffff;

}
.member-top h1{
    font-size:30px;
    color:#ffffff;
}
.member{
    width:90%;
    max-width:1200px;
    margin:50px auto;
}
.professor-card{
    width: 100%;
    padding: 30px;
    background-color: #ffffff;
    border-radius:20px;
    overflow:hidden;
    text-align:center;
    box-shadow:0 8px 25px rgba(0,0,0,.08);
    transition:.3s;
}
.professor-card:hover{
    transform:translateY(-8px);
    box-shadow:0 15px 35px rgba(0,0,0,.15);
}
.professor-profile{
    display:flex;
    align-items:center;
    gap:80px;
}
.professor-left{
    flex:0.8;
    text-align:center;
}
.professor-left img{
    width:100%;
    max-width:320px;
    border-radius:20px;
    box-shadow:0 10px 30px rgba(0,0,0,.15);
}
.professor-right{
    flex:1.2;
    text-align:left;
}
.professor-right h1{
    font-size:35px;
    color:#000e24;
    margin-bottom:30px;
}
.professor-right h2{
    margin-top:30px;
    margin-bottom:10px;
    color:#0066cc;
    font-size:25px;
}
.professor-right p{
    font-size:18px;
    font-weight: 700;
    line-height:2;
    color:#000e24;
}
.member h1{
    margin-top: 50px;
    font-size:30px;
    color:#000e24;
    text-align: left;
    border-bottom:2px solid #0066cc;
    padding-bottom: 10px;
    margin-bottom: 20px;
}
.student-list{
    display:flex;
    flex-wrap:wrap;
    gap:40px;
}
.student-card{
    width:220px;
    background:#ffffff;
    border-radius:20px;
    overflow:hidden;
    text-align:center;
    box-shadow:0 8px 25px rgba(0,0,0,.08);
    transition:.3s;
}
.student-card:hover{
    transform:translateY(-8px);
    box-shadow:0 15px 35px rgba(0,0,0,.15);
}
.student-card img{
    width:100%;
    aspect-ratio:1/1;
    object-fit:cover;
}
.student-card h2{
    margin-top:10px;
    font-size:22px;
    font-weight:700;
    color:#000e24;
}
.student-card p{
    padding:10px 20px 25px;
    font-size:16px;
    font-weight: 700;
    line-height:1.8;
    color:#0066cc;
}



.senior-top{
    width: 100%;
    margin-top: 90px;
    padding:30px;
    text-align: center;
    background-color:#000e24;
    border-top:3px solid #ffffff;
    border-bottom:3px solid #ffffff;
}
.senior-top h1{
    font-size:30px;
    color:#ffffff;
}
.senior{
    width:80%;
    max-width:1200px;
    margin:50px auto;
}
.senior h1{
    font-size: 30px;
    font-weight: 700;
    color: #000e24;
    text-align: left;
    border-bottom:2px solid #0066cc;
    padding-bottom: 10px;
  
}
.career-list{
    margin-top: 30px;
    display:grid;
    grid-template-columns:repeat(3,1fr);
    gap:25px;
}
.career-item{
    display:flex;
    justify-content:center;
    align-items:center;
    min-height:90px;
    background:#ffffff;
    border-radius:15px;
    font-size:18px;
    font-weight:600;
    color:#000e24;
    box-shadow:0 5px 15px rgba(0,0,0,.08);
    transition:.3s;
}
.career-item:hover{
    transform:translateY(-5px);
}
.senior-voice-list{
    margin-top: 20px;
    display:flex;
    flex-direction:column;
    gap:35px;
}
.senior-voice-card{
    background:#ffffff;
    border-left:6px solid #0066cc;
    border-radius:15px;
    padding:35px;
    box-shadow:0 8px 20px rgba(0,0,0,.08);
    transition:.3s;
}
.senior-voice-card:hover{
    transform:translateY(-5px);
}
.senior-voice-message{
    position:relative;
    font-size:20px;
    line-height:2;
    color:#000e24;
    font-style:italic;
}
.senior-voice-info{
    margin-top:20px;
    text-align:right;
    font-size:18px;
    color:#000e24;
    font-style:italic;
}



/* 共通 */

.fade-up,
.fade-left,
.fade-right{
    opacity:0;
    transition:1s ease;
}
.fade-up{
    opacity:0;
    transform:translateY(40px);
    transition:1s ease;
}
.hero-text.fade-up{
    transform:translate(-50%,-40%);
}
.hero-text.fade-up.show{
    transform:translate(-50%,-50%);
}
.fade-left{
    transform:translateX(-80px);
}
.fade-right{
    transform:translateX(80px);
}
.show{
    opacity:1;
    transform:translate(0);
}