:root{
  --white:#FFFFFF;
  --ink:#1A1A1A;
  --gray:#75746F;
  --gray-light:#ABAAA5;
  --hairline:#E7E6E2;
  --panel:#FAFAF8;
  --serif:"Yu Mincho","YuMincho","Hiragino Mincho ProN","Noto Serif JP","Noto Serif CJK JP",serif;
  --latin:"Cormorant Garamond","Georgia",serif;
  --sidebar:236px;
}
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
body{font-family:var(--serif);background:var(--white);color:var(--ink);line-height:2;font-feature-settings:"palt";-webkit-font-smoothing:antialiased}
a{color:inherit;text-decoration:none}
.cap{font-family:var(--latin);font-size:.66rem;letter-spacing:.3em;text-transform:uppercase;color:var(--gray)}
.en-sub{font-family:var(--latin);font-size:.86rem;letter-spacing:.04em;color:var(--gray);line-height:1.75}
p{text-align:left}

/* ===== sidebar ===== */
.sidebar{position:fixed;top:0;left:0;bottom:0;width:var(--sidebar);border-right:1px solid var(--hairline);padding:52px 40px 40px;display:flex;flex-direction:column;background:var(--white);z-index:60}
.sb-logo{display:flex;align-items:baseline;gap:2px}
.sb-logo .i{font-family:var(--latin);font-size:2.3rem;line-height:1;letter-spacing:.02em}
.sb-logo .i span{color:var(--gray)}
.sb-logo .word{font-family:var(--latin);font-size:1.42rem;letter-spacing:.08em}
.sb-tag{font-family:var(--latin);font-size:.58rem;letter-spacing:.24em;text-transform:uppercase;color:var(--gray);line-height:1.9;margin-top:22px}
.sb-rule{width:22px;height:1px;background:var(--ink);margin:30px 0 36px}
nav.sb a{display:block;font-family:var(--latin);font-size:.7rem;letter-spacing:.26em;text-transform:uppercase;color:var(--ink);padding:9px 0;position:relative}
nav.sb a::after{content:"";position:absolute;left:0;bottom:6px;width:0;height:1px;background:var(--ink);transition:width .3s}
nav.sb a:hover::after{width:26px}
.sb-foot{margin-top:auto}
.sb-lang{font-family:var(--latin);font-size:.68rem;letter-spacing:.22em;color:var(--gray)}
.sb-lang b{color:var(--ink);font-weight:500}
.sb-mail{font-family:var(--latin);font-size:.72rem;letter-spacing:.05em;color:var(--gray);display:block;margin-top:16px}
.m-toggle{display:none}
.m-btn{display:none}
nav.sb .jp{display:none}
@media(max-width:980px){
  .sidebar{position:sticky;top:0;width:100%;border-right:none;border-bottom:1px solid var(--hairline);padding:0;display:block}
  .sb-head{display:flex;align-items:center;justify-content:space-between;padding:14px 20px 12px}
  .sb-logo{display:flex;align-items:baseline;gap:9px}
  .sb-logo .i{font-size:1.55rem}
  .sb-logo .word{font-size:.95rem;margin-top:0}
  .sb-tag,.sb-rule,.sb-foot{display:none}
  .m-btn{display:flex;flex-direction:column;gap:6px;padding:12px 4px;cursor:pointer}
  .m-btn span{display:block;width:22px;height:1px;background:var(--ink)}
  nav.sb{display:none;border-top:1px solid var(--hairline);background:var(--white)}
  .m-toggle:checked ~ nav.sb{display:block}
  nav.sb a{display:flex;justify-content:space-between;align-items:baseline;padding:15px 22px;border-bottom:1px solid var(--hairline);font-size:.62rem;letter-spacing:.26em;color:var(--gray)}
  nav.sb a:last-child{border-bottom:none}
  nav.sb a::after{display:none}
  nav.sb .jp{display:inline;order:-1;font-family:var(--serif);font-size:.98rem;letter-spacing:.14em;color:var(--ink);font-weight:600}
}
main{margin-left:var(--sidebar)}
@media(max-width:980px){main{margin-left:0}}

/* ===== hero ===== */
.hero{display:grid;grid-template-columns:1fr 320px;border-bottom:1px solid var(--hairline)}
.hero-visual{position:relative;min-height:560px;overflow:hidden;border-right:1px solid var(--hairline)}
.hero-visual img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;object-position:62% 42%}
.hero-wash{position:absolute;inset:0;background:linear-gradient(100deg,rgba(255,255,255,.82) 0%,rgba(255,255,255,.45) 34%,rgba(255,255,255,0) 58%)}
.hero-copy{position:absolute;left:clamp(24px,4.5vw,64px);top:120px;max-width:560px}
.hero-copy h1{font-size:clamp(1.5rem,2.6vw,2.15rem);font-weight:600;letter-spacing:.06em;line-height:2}
.hero-copy .sub{margin-top:26px;font-family:var(--latin);font-size:.72rem;letter-spacing:.24em;text-transform:uppercase;color:var(--gray);line-height:2.2}
.hero-copy .cta{display:inline-flex;align-items:center;gap:.9em;margin-top:38px;font-family:var(--latin);font-size:.72rem;letter-spacing:.26em;text-transform:uppercase;color:var(--ink)}
.hero-copy .cta::after{content:"";width:44px;height:1px;background:var(--ink);transition:width .35s}
.hero-copy .cta:hover::after{width:64px}
.scroll{position:absolute;left:clamp(24px,4.5vw,64px);bottom:26px;font-family:var(--latin);font-size:.62rem;letter-spacing:.3em;text-transform:uppercase;color:var(--gray)}
.hero-news{padding:56px 34px 40px;display:flex;flex-direction:column}
.hero-news .all{align-self:flex-end;font-family:var(--latin);font-size:.66rem;letter-spacing:.28em;text-transform:uppercase;display:inline-flex;align-items:center;gap:.7em}
.hero-news .all::after{content:"";width:26px;height:1px;background:var(--ink)}
ul.rail{list-style:none;margin-top:34px}
ul.rail li{border-top:1px solid var(--hairline);padding:18px 2px}
ul.rail li:last-child{border-bottom:1px solid var(--hairline)}
ul.rail .d{font-family:var(--latin);font-size:.74rem;letter-spacing:.12em;color:var(--gray)}
ul.rail .tag{font-family:var(--latin);font-size:.56rem;letter-spacing:.24em;text-transform:uppercase;color:var(--gray-light);margin-left:1.2em}
ul.rail .t{display:block;font-size:.95rem;line-height:1.85;margin-top:6px}
ul.rail .t a{background-image:linear-gradient(var(--gray-light),var(--gray-light));background-repeat:no-repeat;background-position:0 100%;background-size:100% 1px;transition:background-image .3s}
ul.rail .t a:hover,ul.rail .t a:focus-visible{background-image:linear-gradient(var(--ink),var(--ink))}
.hero-news .view{margin-top:auto;padding-top:30px;font-family:var(--latin);font-size:.66rem;letter-spacing:.28em;text-transform:uppercase;display:inline-flex;align-items:center;gap:.7em}
.hero-news .view::after{content:"";width:26px;height:1px;background:var(--ink)}
@media(max-width:1150px){.hero{grid-template-columns:1fr}.hero-visual{border-right:none;border-bottom:1px solid var(--hairline)}}
@media(max-width:640px){.hero-visual{min-height:430px}.hero-copy{top:70px}}

/* ===== stats ===== */
.stats{display:flex;align-items:center;border-bottom:1px solid var(--hairline)}
.stat{flex:1;padding:34px 30px;display:flex;align-items:baseline;gap:16px;position:relative}
.stat + .stat::before{content:"";position:absolute;left:0;top:26px;bottom:26px;width:1px;background:var(--hairline);transform:rotate(14deg)}
.stat .n{font-family:var(--latin);font-size:2.15rem;letter-spacing:.04em;line-height:1}
.stat .l{font-family:var(--latin);font-size:.6rem;letter-spacing:.22em;text-transform:uppercase;color:var(--gray);line-height:1.8}
.stats .view{padding:0 34px;font-family:var(--latin);font-size:.64rem;letter-spacing:.26em;text-transform:uppercase;white-space:nowrap;display:inline-flex;align-items:center;gap:.7em}
.stats .view::after{content:"";width:26px;height:1px;background:var(--ink)}
@media(max-width:1150px){.stats{flex-wrap:wrap}.stat{min-width:46%}.stats .view{padding:20px 30px}}

/* ===== home lower ===== */
.home-lower{border-bottom:1px solid var(--hairline)}
.pubs{padding:56px 40px 64px;border-bottom:1px solid var(--hairline)}
.col-head{display:flex;justify-content:space-between;align-items:baseline;margin-bottom:40px}
.col-head h2{font-family:var(--latin);font-size:.74rem;letter-spacing:.3em;text-transform:uppercase;font-weight:500}
.col-head a{font-family:var(--latin);font-size:.62rem;letter-spacing:.26em;text-transform:uppercase;display:inline-flex;align-items:center;gap:.7em;color:var(--gray)}
.col-head a::after{content:"";width:24px;height:1px;background:var(--gray)}
.cover-row{display:grid;grid-template-columns:repeat(5,1fr);gap:26px;max-width:1180px}
.pcard{display:block}
.cover-img{display:block;width:100%;aspect-ratio:3/4.15;object-fit:cover;border:1px solid var(--hairline);transition:box-shadow .3s,transform .3s}
.pcard:hover .cover-img{box-shadow:0 12px 34px rgba(0,0,0,.1)}
.pmeta{margin-top:14px}
.pmeta .tt{font-size:.95rem;font-weight:600;line-height:1.8;display:block}
.pmeta .dt{font-family:var(--latin);font-size:.78rem;letter-spacing:.1em;color:var(--gray);display:block;margin-top:4px}
.pmeta .doi{font-family:var(--latin);font-size:.68rem;letter-spacing:.04em;color:var(--gray-light);display:block}
.pmeta .chip{display:inline-block;margin-top:9px;font-family:var(--latin);font-size:.52rem;letter-spacing:.2em;text-transform:uppercase;border:1px solid var(--hairline);padding:2px 9px;color:var(--gray)}
@media(max-width:1250px){.cover-row{grid-template-columns:repeat(3,1fr)}.pcard:nth-child(n+4){display:none}}
@media(max-width:640px){.cover-row{grid-template-columns:repeat(2,1fr)}.pcard:nth-child(n+3){display:none}}

.doms{padding:56px 40px 64px}
.doms .domlist,.doms .col-head{max-width:1180px}
ul.domlist{list-style:none}
ul.domlist li{border-top:1px solid var(--hairline)}
ul.domlist li:last-child{border-bottom:1px solid var(--hairline)}
ul.domlist a{display:grid;grid-template-columns:44px 1fr auto;gap:18px;align-items:baseline;padding:26px 4px;transition:background .3s}
ul.domlist a:hover{background:var(--panel)}
ul.domlist .no{font-family:var(--latin);font-size:.72rem;letter-spacing:.16em;color:var(--gray-light)}
ul.domlist .nm{font-size:1.12rem;font-weight:600;letter-spacing:.1em}
ul.domlist .ds{display:block;font-size:.98rem;font-weight:400;color:var(--gray);line-height:2;margin-top:6px;max-width:860px}
ul.domlist .ar{font-family:var(--latin);color:var(--gray)}


.pub-infra{display:grid;grid-template-columns:1fr 1fr 1fr;gap:24px;margin-top:48px;max-width:1180px}
.infra{border:1px solid var(--hairline);padding:26px 26px 24px;display:block;transition:background .3s}
.infra:hover{background:var(--panel)}
.infra .cap{display:block;margin-bottom:10px}
.infra .nm{display:block;font-size:1.1rem;font-weight:600;letter-spacing:.06em}
.infra .ds{display:block;font-size:.95rem;color:var(--gray);line-height:1.95;margin-top:8px}
.infra .ar{display:inline-block;font-size:.74rem;letter-spacing:.14em;margin-top:14px;border-bottom:1px solid var(--hairline)}
@media(max-width:640px){.pub-infra{grid-template-columns:1fr}}

.join-banner{background:#4A5872;color:#F5F7FA;padding:72px clamp(24px,5vw,64px);border-bottom:1px solid var(--hairline)}
.jb-inner{max-width:1180px}
.join-banner h2{font-size:clamp(1.4rem,2.6vw,2rem);font-weight:600;letter-spacing:.1em;margin-top:20px}
.join-banner p{max-width:680px;font-size:1.04rem;color:#D8DEE9;line-height:2.1;margin-top:22px}
.jb-cta{display:inline-block;margin-top:34px;border:1px solid #99A5BC;padding:14px 34px;font-size:.84rem;letter-spacing:.18em;transition:background .3s,color .3s}
.jb-cta:hover{background:#F5F7FA;color:#4A5872}

/* ===== inner pages ===== */
.inner{padding:0 clamp(24px,5vw,64px);max-width:1020px}
.page-head{padding:96px 0 56px;border-bottom:1px solid var(--hairline)}
.page-head.noline{border-bottom:none;padding-bottom:8px}
.page-head .cap{display:block;margin-bottom:16px}
.page-head h1{font-size:clamp(1.55rem,3vw,2.15rem);font-weight:600;letter-spacing:.08em}
.page-head .lead{margin-top:28px;max-width:660px;font-size:1.06rem}
.page-head .lead-en{margin-top:14px;max-width:640px}
section.block{padding:78px 0;border-bottom:1px solid var(--hairline)}
section.block:last-of-type{border-bottom:none}
section.block.tight{padding-top:36px}
h2.sec{font-size:1.2rem;font-weight:600;letter-spacing:.1em;margin-bottom:8px}
.sec-cap{display:block;margin-bottom:32px}
.note{font-size:.88rem;color:var(--gray);line-height:1.95}
section.block>p{font-size:1.05rem}

.prog{padding:56px 0;border-bottom:1px solid var(--hairline);display:grid;grid-template-columns:150px 1fr;gap:38px}
.prog:last-of-type{border-bottom:none}
.prog .dom{font-family:var(--latin);font-size:.8rem;letter-spacing:.24em;color:var(--gray-light)}
.prog h3{font-size:1.14rem;font-weight:600;letter-spacing:.1em}
.prog .p-en{display:block;margin:4px 0 20px}
.prog p{font-size:1.05rem;margin-bottom:1.1em;max-width:620px}
.prog .meta{margin-top:14px;font-size:.8rem;color:var(--gray)}
.prog .meta b{font-weight:600;color:var(--ink);letter-spacing:.1em;margin-right:.8em}
@media(max-width:700px){.prog{grid-template-columns:1fr;gap:8px}}
.apply-band{padding:52px 0;background:var(--panel);border-bottom:1px solid var(--hairline)}
.apply-band .inner-band{padding:0 clamp(24px,5vw,64px)}
.apply-band p{max-width:640px;font-size:.92rem}
.apply-band a{border-bottom:1px solid var(--gray-light)}

.venue{padding:52px 0;border-bottom:1px solid var(--hairline);display:grid;grid-template-columns:150px 1fr;gap:38px}
.venue .k{font-family:var(--latin);font-size:.68rem;letter-spacing:.26em;text-transform:uppercase;color:var(--gray-light);padding-top:.5em}
.venue h3{font-size:1.14rem;font-weight:600;letter-spacing:.08em;margin-bottom:14px}
.venue p{font-size:1.05rem;max-width:620px;margin-bottom:.5em}
.venue .go{display:inline-block;margin-top:8px;font-size:.8rem;letter-spacing:.14em;border-bottom:1px solid var(--hairline)}
@media(max-width:700px){.venue{grid-template-columns:1fr;gap:8px}}

table.papers{width:100%;border-collapse:collapse;font-size:1rem}
table.papers th{font-weight:600;font-size:.72rem;letter-spacing:.2em;color:var(--gray);text-align:left;padding:0 14px 14px 0;border-bottom:1px solid var(--ink)}
table.papers td{padding:22px 14px 22px 0;border-bottom:1px solid var(--hairline);vertical-align:top;text-align:left}
table.papers td.no{font-family:var(--latin);white-space:nowrap;color:var(--gray);letter-spacing:.08em}
table.papers td.title b{font-weight:600}
table.papers td.title span{display:block;font-size:.8rem;color:var(--gray);margin-top:4px}
table.papers td.doi{white-space:nowrap}
table.papers td.doi a{font-family:var(--latin);font-size:.8rem;border-bottom:1px solid var(--hairline)}
table.papers td.date{font-family:var(--latin);white-space:nowrap;color:var(--gray);font-size:.8rem}
@media(max-width:760px){table.papers td.doi,table.papers th.doi{display:none}}

.res-name{font-size:1.5rem;font-weight:600;letter-spacing:.14em}
.res-name-en{display:block;margin-top:10px}
.res-bio{margin-top:34px;max-width:620px;font-size:1.06rem}
.res-bio-en{margin-top:18px;max-width:620px}
ul.res-links{margin-top:44px;list-style:none}
ul.res-links li{border-top:1px solid var(--hairline);padding:18px 4px;display:flex;gap:2em;font-size:.88rem;flex-wrap:wrap}
ul.res-links li:last-child{border-bottom:1px solid var(--hairline)}
ul.res-links .k{font-family:var(--latin);font-size:.7rem;letter-spacing:.22em;text-transform:uppercase;color:var(--gray);min-width:130px;padding-top:.35em}
ul.res-links a{border-bottom:1px solid var(--hairline)}

.join-sec{padding:64px 0;border-bottom:1px solid var(--hairline);display:grid;grid-template-columns:150px 1fr;gap:38px}
.join-sec:last-of-type{border-bottom:none}
.join-sec .k{font-family:var(--latin);font-size:.68rem;letter-spacing:.26em;text-transform:uppercase;color:var(--gray-light);padding-top:.5em}
.join-sec h3{font-size:1.14rem;font-weight:600;letter-spacing:.1em;margin-bottom:16px}
.join-sec p{font-size:1.05rem;max-width:620px;margin-bottom:1em}
@media(max-width:700px){.join-sec{grid-template-columns:1fr;gap:8px}}

ul.news{list-style:none}
ul.news li{display:grid;grid-template-columns:130px 1fr;gap:26px;padding:20px 0;border-bottom:1px solid var(--hairline);font-size:1.02rem}
ul.news li:first-child{border-top:1px solid var(--ink)}
ul.news .d{font-family:var(--latin);color:var(--gray);letter-spacing:.08em}
ul.news .tag{font-family:var(--latin);font-size:.56rem;letter-spacing:.22em;text-transform:uppercase;color:var(--gray-light);display:block}
ul.news a{display:inline;background-image:linear-gradient(var(--gray-light),var(--gray-light));background-repeat:no-repeat;background-position:0 100%;background-size:100% 1px;transition:background-color .3s,background-size .3s}
ul.news a:hover,ul.news a:focus-visible{background-image:linear-gradient(var(--ink),var(--ink))}
@media(max-width:600px){ul.news li{grid-template-columns:1fr;gap:4px}}
.contact-mail{font-family:var(--latin);font-size:1.1rem;letter-spacing:.06em;border-bottom:1px solid var(--hairline)}

/* ===== footer ===== */
footer{border-top:1px solid var(--hairline);padding:40px clamp(24px,5vw,64px) 24px}
.foot-grid{display:flex;justify-content:space-between;gap:24px 50px;flex-wrap:wrap}
.foot-brand .f-logo{display:flex;align-items:baseline;gap:2px}
.foot-brand .fi{font-family:var(--latin);font-size:1.55rem;line-height:1.1}
.foot-brand .fi span{color:var(--gray)}
.foot-brand .fw{font-family:var(--latin);font-size:1.02rem;letter-spacing:.08em}
.foot-brand p{font-size:.82rem;color:var(--gray);margin-top:8px;line-height:1.85}
.foot-mail{display:inline-block;margin-top:10px;font-family:var(--latin);font-size:.74rem;letter-spacing:.06em;color:var(--gray);border-bottom:1px solid var(--hairline)}
.foot-mail:hover{color:var(--ink);border-color:var(--ink)}
.foot-cols{display:flex;gap:clamp(30px,5vw,70px);flex-wrap:wrap}
.foot-col a{display:block;font-family:var(--latin);font-size:.66rem;letter-spacing:.24em;text-transform:uppercase;padding:4px 0;color:var(--ink)}
.foot-col a:hover{color:var(--gray)}
.copyright{margin-top:18px;font-family:var(--latin);font-size:.64rem;letter-spacing:.2em;color:var(--gray-light);text-align:center}