:root{color-scheme:dark;--bg:#131d2b;--bg-2:#1a2737;--ink:#e8e6dc;--muted:#a8b6bf;--line:rgba(211,225,226,.23);--accent:#e07a5f;--cyan:#81b29a;--indigo:#525893;--sans:"Noto Sans JP",sans-serif;--serif:"Noto Serif JP",serif;--mono:"DM Mono",monospace}
*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:var(--bg);color:var(--ink);font-family:var(--sans);-webkit-font-smoothing:antialiased}body::before{content:"";position:fixed;inset:0;pointer-events:none;z-index:-1;background-image:linear-gradient(rgba(182,204,210,.055) 1px,transparent 1px),linear-gradient(90deg,rgba(182,204,210,.055) 1px,transparent 1px);background-size:24px 24px}.site-shell{max-width:1680px;margin:auto;padding:0 clamp(24px,5vw,86px)}a{color:inherit;text-decoration:none}button{font:inherit}.mono{font-family:var(--mono);font-size:11px;letter-spacing:.1em}.site-header{height:96px;display:flex;align-items:center;justify-content:space-between;border-bottom:1px solid var(--line);gap:20px}.brand{display:flex;align-items:center;gap:16px;font:500 12px var(--mono);letter-spacing:.08em;white-space:nowrap}.brand-mark{height:35px;width:35px;display:grid;place-items:center;border:1px solid var(--accent);color:var(--accent);font:600 18px var(--serif)}.brand-suffix{color:var(--muted)}.site-nav{display:flex;gap:clamp(16px,3vw,48px);font:500 11px var(--mono);letter-spacing:.1em}.site-nav a,.site-footer a{transition:color .2s}.site-nav a:hover,.site-footer a:hover{color:var(--accent)}.site-nav a:last-child span{color:var(--accent)}.hero{min-height:760px;display:flex;flex-direction:column;border-bottom:1px solid var(--line)}.hero-meta,.hero-bottom{display:flex;align-items:center;justify-content:space-between;color:var(--muted)}.hero-meta{padding-top:25px}.hero-content{flex:1;display:grid;grid-template-columns:minmax(0,1fr) minmax(380px,.88fr);align-items:center;gap:4vw;padding:50px 0 35px}.hero-copy{padding-bottom:22px}.eyebrow{display:flex;align-items:center;gap:12px;color:var(--accent);font:500 11px var(--mono);letter-spacing:.18em;margin:0 0 32px}.eyebrow-line{width:35px;height:1px;background:var(--accent)}h1,h2,p{margin-top:0}h1{font:600 clamp(48px,5.6vw,92px)/1.35 var(--serif);letter-spacing:-.06em;margin-bottom:27px;white-space:nowrap}h1 em{font-style:normal;color:var(--cyan)}.hero-intro{font:400 clamp(16px,1.25vw,20px)/2 var(--sans);letter-spacing:.06em;margin-bottom:37px}.text-link{font:500 12px var(--mono);letter-spacing:.07em;border-bottom:1px solid var(--accent);padding-bottom:8px}.text-link span{margin-left:24px;color:var(--accent)}.hero-figure{position:relative;aspect-ratio:1/1;color:var(--cyan);border:1px solid var(--line);background:rgba(13,26,39,.4);max-width:600px;width:100%;justify-self:end;overflow:hidden}.hero-figure::before,.hero-figure::after{content:"";position:absolute;z-index:1;background:var(--line)}.hero-figure::before{width:1px;height:100%;left:50%}.hero-figure::after{height:1px;width:100%;top:50%}.hero-figure svg{position:relative;z-index:2;width:100%;height:100%;padding:7%;filter:drop-shadow(0 0 25px rgba(242,185,144,.15))}.figure-corner,.figure-label{position:absolute;z-index:3;font:400 10px/1.5 var(--mono);letter-spacing:.08em}.figure-corner{color:var(--muted)}.top-left{top:18px;left:20px}.top-right{top:18px;right:20px}.bottom-left{bottom:18px;left:20px}.bottom-right{bottom:18px;right:20px}.figure-label{color:var(--cyan)}.label-a{top:24%;right:4%}.label-b{bottom:25%;left:5%}.hero-bottom{padding:21px 0 25px;justify-content:flex-start;gap:18px}.hero-bottom span:last-child{margin-left:auto}.scroll-line{width:60px;height:1px;background:var(--accent)}.section{padding:105px 0 125px;border-bottom:1px solid var(--line);scroll-margin-top:20px}.section-heading{display:grid;grid-template-columns:33% 1fr;align-items:start;gap:25px;margin-bottom:69px}.section-number{color:var(--accent);padding-top:17px}h2{font:600 clamp(30px,3vw,45px)/1.4 var(--serif);letter-spacing:-.03em}.heading-dot{color:var(--accent)}.about-grid,.contact-grid{display:grid;grid-template-columns:33% 1fr;gap:25px}.section-lead{font:500 clamp(17px,1.55vw,23px)/2 var(--serif);color:var(--cyan)}.profile-list{margin:0;border-top:1px solid var(--line)}.profile-list>div{display:grid;grid-template-columns:160px 1fr;gap:20px;padding:23px 0;border-bottom:1px solid var(--line)}.profile-list dt{font-size:13px;color:var(--muted)}.profile-list dd{margin:0;font-size:16px;line-height:1.9;letter-spacing:.025em}.muted{color:var(--muted)}.research-card{position:relative;display:grid;grid-template-columns:33% 1fr;gap:25px;min-height:320px;background:var(--bg-2);border:1px solid var(--line);padding:45px;overflow:hidden}.research-card::before{content:"";position:absolute;inset:0;background-image:linear-gradient(rgba(182,204,210,.055) 1px,transparent 1px),linear-gradient(90deg,rgba(182,204,210,.055) 1px,transparent 1px);background-size:24px 24px;pointer-events:none}.research-index{position:relative;color:var(--accent)}.research-index span{margin-left:18px;color:var(--muted)}.research-title{position:relative;z-index:1;font:600 clamp(24px,3vw,40px)/1.65 var(--serif);letter-spacing:-.025em;margin-bottom:28px}.research-title span{color:var(--cyan)}.research-note{position:relative;color:var(--muted);font:11px/1.8 var(--mono);letter-spacing:.1em;margin:0}.research-glyph{position:absolute;right:4%;bottom:-95px;color:rgba(242,185,144,.1);font:300px/1 var(--serif)}.contact-grid>p{font:500 20px var(--serif);color:var(--cyan)}.contact-address{border-top:1px solid var(--line);border-bottom:1px solid var(--line);padding:22px 0 26px}.contact-label{color:var(--accent)}.address-row{display:flex;align-items:center;justify-content:space-between;gap:18px;margin:22px 0 12px}.address-row>span{font:500 clamp(16px,2.4vw,31px) var(--mono);letter-spacing:-.04em;overflow-wrap:anywhere}.address-row button{flex:none;color:var(--accent);background:none;border:1px solid var(--accent);padding:11px 14px;font:11px var(--mono);letter-spacing:.08em;cursor:pointer;transition:background .2s,color .2s}.address-row button:hover{background:var(--accent);color:var(--bg)}.contact-address small{color:var(--muted);font-size:12px}.site-footer{min-height:116px;display:flex;align-items:center;justify-content:space-between;gap:20px;color:var(--muted)}.site-footer span span{color:var(--accent)}.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}a:focus-visible,button:focus-visible{outline:2px solid var(--accent);outline-offset:5px}
@media(max-width:900px){.hero{min-height:0}.hero-content{grid-template-columns:1fr;padding:75px 0 55px;gap:55px}.hero-figure{justify-self:start;max-width:560px}.section-heading,.about-grid,.contact-grid{grid-template-columns:1fr;gap:15px}.section-heading{margin-bottom:40px}.section-number{padding-top:0}.section{padding:80px 0 95px}.research-card{grid-template-columns:1fr;gap:34px}.site-header{height:80px}}
@media(max-width:600px){.site-shell{padding:0 20px}.site-header{height:75px}.brand-suffix{display:none}.brand{font-size:10px;gap:10px}.brand-mark{width:31px;height:31px;font-size:16px}.site-nav{gap:14px;font-size:9px}.site-nav a:first-child{display:none}.hero-meta{font-size:8px;gap:12px}.hero-meta span:last-child{text-align:right}.hero-content{padding:68px 0 45px;gap:48px}.eyebrow{margin-bottom:25px}h1{font-size:clamp(39px,10vw,58px);line-height:1.43}.hero-intro{font-size:15px;line-height:1.95}.hero-figure{width:100%}.figure-corner,.figure-label{font-size:7px}.top-left,.bottom-left{left:10px}.top-right,.bottom-right{right:10px}.top-left,.top-right{top:9px}.bottom-left,.bottom-right{bottom:9px}.hero-bottom{font-size:9px}.section{padding:70px 0 80px}.section-heading{margin-bottom:30px}h2{font-size:30px}.section-lead{font-size:18px}.profile-list>div{grid-template-columns:100px 1fr;gap:12px;padding:19px 0}.profile-list dt{font-size:12px}.profile-list dd{font-size:14px}.research-card{padding:27px;min-height:0}.research-title{font-size:25px;line-height:1.7}.research-glyph{font-size:190px;bottom:-55px}.contact-grid>p{font-size:17px}.address-row{align-items:flex-start;flex-direction:column}.address-row>span{font-size:18px}.site-footer{min-height:95px;font-size:9px}.site-footer>span:nth-child(2){display:none}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}*{transition:none!important}}

/* Text-first header and theme switch */
.header-actions{display:flex;align-items:center;gap:clamp(22px,3vw,48px)}
.theme-toggle{display:flex;align-items:center;gap:9px;padding:9px 0 9px 16px;background:transparent;border:0;border-left:1px solid var(--line);color:var(--ink);cursor:pointer;white-space:nowrap}
.theme-toggle:hover{color:var(--accent)}
.theme-icon{font-size:17px;line-height:1}
.hero{min-height:0}
.hero-content{display:block;padding:clamp(105px,11vw,165px) 0 clamp(110px,12vw,175px)}
.hero-copy{padding:0}
h1{font-size:clamp(54px,7vw,106px)}
body::before,.research-card::before{background-image:linear-gradient(var(--grid,rgba(182,204,210,.055)) 1px,transparent 1px),linear-gradient(90deg,var(--grid,rgba(182,204,210,.055)) 1px,transparent 1px)}
html[data-theme="light"]{color-scheme:light;--bg:#f5f2e9;--bg-2:#edeae1;--ink:#1b2c37;--muted:#50616b;--line:rgba(31,53,65,.27);--accent:#e07a5f;--cyan:#525893;--indigo:#81b29a;--grid:rgba(82,88,147,.075)}
html[data-theme="light"] .research-glyph{color:rgba(149,84,47,.12)}
html[data-theme="light"] .address-row button:hover{color:#fff}
@media(max-width:900px){.hero-content{padding:95px 0 110px}}
@media(max-width:600px){.header-actions{gap:15px}.theme-toggle{gap:6px;padding-left:12px;font-size:9px}.theme-icon{font-size:15px}.hero-content{padding:78px 0 86px}h1{font-size:clamp(39px,10vw,58px)}}
.profile-list a{color:var(--cyan);text-decoration:underline;text-decoration-color:var(--accent);text-underline-offset:.2em}
.profile-list a:hover{color:var(--accent)}
.about-grid{grid-template-columns:1fr;gap:52px}
.section-lead{max-width:none;margin:0;font-size:clamp(18px,2vw,27px);line-height:1.8;font-weight:600}
.section-lead span{display:block;text-wrap:balance}
.profile-list{width:min(100%,850px);margin-left:auto}
.research-card{border-left:4px solid var(--indigo);background:linear-gradient(115deg,rgba(82,88,147,.22),var(--bg-2) 48%)}
html[data-theme="light"] .research-card{background:linear-gradient(115deg,rgba(82,88,147,.09),var(--bg-2) 52%)}
html[data-theme="light"] .eyebrow,html[data-theme="light"] .contact-label,html[data-theme="light"] .research-index,html[data-theme="light"] .heading-dot{color:#9b4b36}
html[data-theme="light"] .section-number{color:#525893}
html[data-theme="light"] .section-lead,html[data-theme="light"] .contact-grid>p{color:#32674f}
html[data-theme="light"] .address-row button{color:#9b4b36}
@media(max-width:600px){.about-grid{gap:32px}.section-lead{font-size:18px;line-height:1.85}}
.about-grid{grid-template-columns:minmax(0,33%) minmax(0,1fr);column-gap:49px;align-items:start}
.section-lead{font-size:clamp(17px,1.55vw,23px);line-height:2;font-weight:500;text-wrap:balance}
.profile-list{width:100%;margin-left:0}
.profile-list .affiliation-link{color:inherit;text-decoration:none}
.profile-list .affiliation-link:hover{color:var(--cyan);text-decoration:none}
.research-card::before{display:none}
.research-card{background:linear-gradient(115deg,rgba(82,88,147,.18),rgba(26,39,55,.78) 52%)}
html[data-theme="light"] .research-card{background:linear-gradient(115deg,rgba(82,88,147,.08),rgba(237,234,225,.78) 52%)}
@media(max-width:900px){.about-grid{grid-template-columns:1fr;gap:32px}}