:root{
  --primary:#24557a; --accent:#d9792b; --bg:#f7f8f8; --ink:#1b2128; --muted:#5d6670;
  --line:#dde1e5; --soft:#eef1f3; --white:#fff;
  --sans:"Noto Sans JP","Helvetica Neue",Helvetica,sans-serif;
  --serif:"Noto Serif JP","Times New Roman",serif;
  --mono:"IBM Plex Mono",ui-monospace,monospace;
  --wrap:1200px;
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{font-family:var(--sans);color:var(--ink);background:var(--bg);line-height:1.8;-webkit-font-smoothing:antialiased;font-size:16px}
img{display:block;max-width:100%}
a{color:inherit;text-decoration:none}
h1,h2,h3{line-height:1.35;text-wrap:balance;font-weight:700}
p{text-wrap:pretty}
.wrap{max-width:var(--wrap);margin:0 auto;padding:0 32px}
@media (max-width:720px){.wrap{padding:0 20px}}

/* header */
.hdr{position:sticky;top:0;z-index:50;background:rgba(255,255,255,.96);backdrop-filter:blur(8px);border-bottom:1px solid var(--line)}
.hdr-in{display:flex;align-items:center;justify-content:space-between;height:76px;gap:24px}
.hdr-logo img{height:44px;width:auto}
.hdr-nav{display:flex;gap:28px;font-size:14px;font-weight:500;align-items:center}
.hdr-nav a{position:relative;padding:6px 0;color:var(--ink)}
.hdr-nav a:hover{color:var(--primary)}
.hdr-nav a::after{content:"";position:absolute;left:0;right:0;bottom:0;height:2px;background:var(--primary);transform:scaleX(0);transition:transform .2s;transform-origin:left}
.hdr-nav a:hover::after{transform:scaleX(1)}
.lang{display:inline-flex;border:1px solid var(--line);border-radius:999px;overflow:hidden;font-family:var(--mono);font-size:12px}
.lang button{border:0;background:transparent;padding:6px 12px;cursor:pointer;color:var(--muted);font:inherit}
.lang button.on{background:var(--primary);color:#fff}
.burger{display:none;background:none;border:1px solid var(--line);border-radius:6px;width:44px;height:44px;cursor:pointer;font-size:18px;color:var(--ink)}
.mnav{display:none}
.hdr-nav{gap:22px;font-size:13.5px}
.hdr-nav a{white-space:nowrap}
@media (max-width:1180px){
  .hdr-nav{display:none}.burger{display:block}
  .hdr-logo img{height:36px}
  .mnav.open{display:flex;flex-direction:column;border-top:1px solid var(--line);background:#fff;padding:8px 20px 20px}
  .mnav a{padding:14px 0;border-bottom:1px solid var(--line);font-weight:500}
}

/* common section */
.sec{padding:112px 0}
@media (max-width:720px){.sec{padding:72px 0}}
.label{font-family:var(--mono);font-size:12px;letter-spacing:.16em;text-transform:uppercase;color:var(--primary);display:flex;align-items:center;gap:12px;margin-bottom:18px}
.label::before{content:"";width:28px;height:1px;background:currentColor}
.h2{font-size:clamp(26px,3.2vw,40px);margin-bottom:24px}
.serif .h2,.serif .hero h1{font-family:var(--serif);font-weight:600}
.lead{color:var(--muted);max-width:640px}
.btn{display:inline-flex;align-items:center;gap:10px;height:52px;padding:0 28px;border-radius:4px;font-weight:600;font-size:15px;transition:.2s;border:1px solid transparent;cursor:pointer}
.btn-p{background:var(--primary);color:#fff}
.btn-p:hover{filter:brightness(1.12)}
.btn-o{border-color:currentColor}
.btn-o:hover{background:rgba(127,127,127,.12)}
.more{display:inline-flex;align-items:center;gap:10px;font-weight:600;color:var(--primary);font-size:15px;margin-top:28px;border-bottom:1px solid currentColor;padding-bottom:4px}
.more::after{content:"→";transition:transform .2s}
.more:hover::after{transform:translateX(4px)}

/* ---------- HERO A: split ---------- */
.heroA{background:#fff;border-bottom:1px solid var(--line)}
.heroA .grid{display:grid;grid-template-columns:1fr 1.05fr;min-height:620px}
.heroA .txt{padding:96px 56px 96px 0;display:flex;flex-direction:column;justify-content:center}
.heroA .eyebrow{font-family:var(--mono);font-size:12px;letter-spacing:.12em;color:var(--muted);margin-bottom:28px}
.heroA h1{font-size:clamp(34px,4.4vw,58px);letter-spacing:.02em;margin-bottom:28px;color:var(--ink)}
.heroA h1 span{display:block}
.heroA h1 span:last-child{color:var(--primary)}
.heroA p{color:var(--muted);max-width:520px;margin-bottom:40px}
.heroA .ph{position:relative;margin-right:calc((100vw - min(100vw,var(--wrap)))/-2 - 32px)}
.heroA .ph img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover}
.heroA .ph .cap{position:absolute;left:24px;bottom:24px;font-family:var(--mono);font-size:11px;color:#fff;background:rgba(0,0,0,.45);padding:6px 10px;letter-spacing:.06em}
@media (max-width:900px){
  .heroA .grid{grid-template-columns:1fr}
  .heroA .txt{padding:64px 0 48px}
  .heroA .ph{height:320px;margin:0 -20px}
}

/* ---------- HERO B: full-bleed dark ---------- */
.heroB{position:relative;min-height:min(88vh,760px);display:flex;align-items:flex-end;color:#fff;overflow:hidden;background:#0d1217}
.heroB img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;opacity:.62}
.heroB::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,rgba(10,14,18,.15) 0%,rgba(10,14,18,.85) 100%)}
.heroB .wrap{position:relative;z-index:1;padding-bottom:88px;width:100%}
.heroB .eyebrow{font-family:var(--mono);font-size:12px;letter-spacing:.14em;opacity:.8;margin-bottom:24px}
.heroB h1{font-size:clamp(34px,5vw,68px);margin-bottom:28px;max-width:900px}
.heroB h1 span{display:block}
.heroB p{max-width:600px;opacity:.88;margin-bottom:40px}
.heroB .btn-p{background:var(--accent)}
.heroB .meta{display:flex;gap:40px;margin-top:64px;padding-top:24px;border-top:1px solid rgba(255,255,255,.2);font-family:var(--mono);font-size:12px;letter-spacing:.08em;opacity:.8;flex-wrap:wrap}

/* ---------- HERO C: editorial type ---------- */
.heroC{background:var(--bg);padding-top:88px}
.heroC .top{display:grid;grid-template-columns:1fr 360px;gap:64px;align-items:end;padding-bottom:56px;border-bottom:1px solid var(--ink)}
.heroC h1{font-size:clamp(36px,5.6vw,76px);letter-spacing:.01em;line-height:1.2}
.heroC h1 span{display:block}
.heroC .eyebrow{font-family:var(--mono);font-size:12px;letter-spacing:.14em;color:var(--primary);margin-bottom:32px}
.heroC p{color:var(--muted);font-size:15px;margin-bottom:28px}
.heroC .strip{display:grid;grid-template-columns:2fr 1fr;gap:16px;padding:16px 0 0}
.heroC .strip img{width:100%;height:420px;object-fit:cover}
.heroC .strip .s2{display:grid;grid-template-rows:1fr 1fr;gap:16px}
.heroC .strip .s2 img{height:202px}
@media (max-width:900px){
  .heroC{padding-top:56px}
  .heroC .top{grid-template-columns:1fr;gap:24px}
  .heroC .strip{grid-template-columns:1fr}
  .heroC .strip img{height:260px}
  .heroC .strip .s2{grid-template-columns:1fr 1fr;grid-template-rows:none}
  .heroC .strip .s2 img{height:140px}
}

/* about */
.about .grid{display:grid;grid-template-columns:1.3fr 1fr;gap:80px;align-items:start}
.about p+p{margin-top:16px}
.about .body{color:#38414a}
.pi{background:#fff;border:1px solid var(--line);padding:32px}
.pi .ph{aspect-ratio:4/3;margin-bottom:24px;background:repeating-linear-gradient(135deg,var(--soft) 0 10px,#fff 10px 20px);display:grid;place-items:center;font-family:var(--mono);font-size:12px;color:var(--muted);border:1px solid var(--line)}
.pi .nm{font-size:22px;font-weight:700}
.pi .rl{font-size:13px;color:var(--primary);margin:4px 0 12px;font-weight:500}
.pi .nt{font-size:14px;color:var(--muted)}
@media (max-width:900px){.about .grid{grid-template-columns:1fr;gap:40px}}

.heroB .meta span{display:inline-flex;align-items:center;gap:10px}
.heroB .meta .dot{width:7px;height:7px;border-radius:50%;background:var(--accent);box-shadow:0 0 0 4px rgba(255,255,255,.12);animation:pulse 2.4s infinite}
.heroB .meta span:nth-child(2) .dot{animation-delay:.6s}
.heroB .meta span:nth-child(3) .dot{animation-delay:1.2s}
.heroB .meta span:nth-child(4) .dot{animation-delay:1.8s}
@keyframes pulse{0%,100%{opacity:1}50%{opacity:.35}}

.cred{display:block;background:#0f1520;color:#fff;border-top:1px solid rgba(255,255,255,.1)}
.cred-in{display:flex;justify-content:space-between;gap:24px 48px;padding-top:22px;padding-bottom:22px;flex-wrap:wrap;align-items:center}
.cred-g{display:flex;align-items:center;gap:10px 20px;flex-wrap:wrap}
.cred-l{font-family:var(--mono);font-size:11px;letter-spacing:.14em;text-transform:uppercase;color:rgba(255,255,255,.5)}
.cred b{font-family:var(--mono);font-size:13px;font-weight:500;letter-spacing:.04em;padding:5px 12px;border:1px solid rgba(255,255,255,.35);border-radius:2px}
.cred i{font-size:14px;color:rgba(255,255,255,.88)}
.cred i+i::before{content:"/";margin-right:20px;color:rgba(255,255,255,.3);font-style:normal}
.cred:hover b{border-color:#fff}
@media (max-width:720px){.cred-g{gap:8px 12px}.cred i{font-size:13px}.cred i+i::before{margin-right:12px}}

/* people */
.people{background:#fff}
.pp-head{display:grid;grid-template-columns:1fr 1fr;gap:64px;align-items:end;margin-bottom:56px}
.pp-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:40px 28px}
.pp-card{display:flex;flex-direction:column}
.pp-ph{position:relative;aspect-ratio:4/5;background:var(--soft);overflow:hidden}
.pp-tag{position:absolute;left:12px;bottom:12px;right:12px;display:flex;align-items:center;gap:8px;background:rgba(15,21,32,.82);color:#fff;font-size:12px;padding:8px 12px;pointer-events:none;line-height:1.4}
.pp-tag i{flex:none;width:7px;height:7px;border-radius:50%;background:var(--accent);filter:brightness(1.4);animation:pulse 2.4s infinite}
.pp-info{padding-top:18px;border-bottom:1px solid var(--line);padding-bottom:20px;flex:1}
.pp-role{font-family:var(--mono);font-size:11px;letter-spacing:.1em;color:var(--primary);margin-bottom:6px}
.pp-name{font-size:22px;margin-bottom:8px}
.pp-theme{font-size:14px;color:var(--muted);line-height:1.7}
@media (max-width:960px){.pp-head{grid-template-columns:1fr;gap:16px;margin-bottom:40px}.pp-grid{grid-template-columns:1fr 1fr;gap:32px 16px}}
@media (max-width:480px){.pp-pre{display:none}.pp-name{font-size:18px}.pp-tag{font-size:11px;left:8px;right:8px;bottom:8px;padding:6px 8px}}

.pp-jph{display:grid;place-items:center;background:transparent;border:1px dashed var(--primary);transition:background .2s}
.pp-plus{font-size:64px;font-weight:300;color:var(--primary);line-height:1}
.pp-join:hover .pp-jph{background:var(--soft)}
.pp-join .pp-name{color:var(--primary)}
/* sensing */
.sensing{background:#0f1520;color:#fff}
.sensing .label{color:rgba(255,255,255,.7)}
.sensing .lead{color:rgba(255,255,255,.72)}
.sn-head{display:grid;grid-template-columns:1fr 1fr;gap:64px;align-items:end;margin-bottom:56px}
.sn-body{display:grid;grid-template-columns:.9fr 1.6fr;gap:40px;align-items:start}
.sn-fig{position:sticky;top:100px;background:#fff;padding:10px}
.sn-fig figcaption{font-family:var(--mono);font-size:11px;letter-spacing:.08em;color:#555;padding:10px 2px 2px}
.sn-grid{display:grid;grid-template-columns:1fr 1fr;border-top:1px solid rgba(255,255,255,.18);border-left:1px solid rgba(255,255,255,.18)}
.sn-item{padding:28px 26px 30px;border-right:1px solid rgba(255,255,255,.18);border-bottom:1px solid rgba(255,255,255,.18);transition:background .2s}
.sn-item:hover{background:rgba(255,255,255,.05)}
.sn-k{font-family:var(--mono);font-size:11px;letter-spacing:.14em;color:var(--accent);display:flex;gap:12px;margin-bottom:16px;filter:brightness(1.5)}
.sn-k span{color:rgba(255,255,255,.5)}
.sn-item h3{font-size:19px;margin-bottom:16px}
.sn-item dl{display:grid;gap:8px;font-size:13px}
.sn-item dl div{display:grid;grid-template-columns:52px 1fr;gap:10px}
.sn-item dt{font-family:var(--mono);color:rgba(255,255,255,.5);font-size:11px;padding-top:2px}
.sn-item dd{color:rgba(255,255,255,.85);line-height:1.6}
@media (max-width:960px){
  .sn-head{grid-template-columns:1fr;gap:16px;margin-bottom:40px}
  .sn-body{grid-template-columns:1fr}
  .sn-fig{position:static}
}
@media (max-width:560px){.sn-grid{grid-template-columns:1fr}.sn-item{padding:24px 20px}}

/* research — layered (A,B) */
.research{background:#fff}
.rs-head{display:grid;grid-template-columns:1fr 1fr;gap:64px;align-items:end;margin-bottom:64px}
.rs-cards{display:grid;grid-template-columns:repeat(4,1fr);gap:0;border-top:1px solid var(--line);counter-reset:r}
.rs-card{padding:36px 28px 40px;border-right:1px solid var(--line);position:relative}
.rs-card:first-child{padding-left:0}
.rs-card:last-child{border-right:0}
.rs-card .n{font-family:var(--mono);font-size:13px;color:var(--primary);margin-bottom:28px;display:flex;justify-content:space-between}
.rs-card .n em{font-style:normal;color:var(--muted);letter-spacing:.1em;text-transform:uppercase;font-size:11px}
.rs-card h3{font-size:20px;margin-bottom:14px}
.rs-card p{font-size:14px;color:var(--muted)}
.rs-card::before{content:"";position:absolute;top:-1px;left:0;height:3px;background:var(--primary);width:0;transition:width .3s}
.rs-card:first-child::before{left:0}
.rs-card:hover::before{width:100%}
.rs-flow{display:flex;align-items:center;gap:10px;margin:0 0 40px;font-family:var(--mono);font-size:12px;color:var(--muted);flex-wrap:wrap;letter-spacing:.06em}
.rs-flow b{font-weight:500;color:var(--ink);padding:6px 12px;border:1px solid var(--line);border-radius:999px;background:var(--bg)}
.rs-flow b:first-child{background:var(--primary);color:#fff;border-color:var(--primary)}
@media (max-width:900px){
  .rs-head{grid-template-columns:1fr;gap:16px;margin-bottom:40px}
  .rs-cards{grid-template-columns:1fr 1fr}
  .rs-card,.rs-card:first-child{padding:28px 20px 32px 0;border-right:0;border-bottom:1px solid var(--line)}
  .rs-card:nth-child(odd){padding-right:20px;border-right:1px solid var(--line)}
  .rs-card:nth-child(even){padding-left:20px}
}
@media (max-width:560px){.rs-cards{grid-template-columns:1fr}.rs-card:nth-child(n){padding:28px 0;border-right:0}}

/* research — rows (C) */
.rs-rows{border-top:1px solid var(--ink)}
.rs-row{display:grid;grid-template-columns:100px 1fr 1.4fr;gap:40px;padding:36px 0;border-bottom:1px solid var(--line);align-items:baseline;transition:background .2s}
.rs-row:hover{background:var(--soft)}
.rs-row .n{font-family:var(--mono);font-size:14px;color:var(--primary)}
.rs-row h3{font-size:clamp(20px,2.2vw,28px)}
.rs-row h3 small{display:block;font-family:var(--mono);font-size:11px;letter-spacing:.14em;color:var(--muted);font-weight:400;text-transform:uppercase;margin-bottom:6px}
.rs-row p{color:var(--muted);font-size:15px}
@media (max-width:760px){.rs-row{grid-template-columns:1fr;gap:8px}}

/* projects */

.pj-img{margin-top:40px;border:1px solid var(--line);background:#fff;padding:12px}
.pj-list{list-style:none;border-top:1px solid var(--line)}
.pj-list li{display:grid;grid-template-columns:120px 1fr;gap:24px;padding:24px 0;border-bottom:1px solid var(--line)}
.pj-list .y{font-family:var(--mono);font-size:13px;color:var(--primary);padding-top:2px}
.pj-list .t{font-weight:600;font-size:16px;line-height:1.6}
.pj-list .f{font-size:13px;color:var(--muted);margin-top:6px}
.pubs{margin-top:28px;font-size:14px;color:var(--muted);padding:20px 24px;background:var(--soft)}


/* funding & publications v2 */
.pj{background:var(--bg)}
.pj-head{display:grid;grid-template-columns:1fr 1fr;gap:64px;align-items:end;margin-bottom:56px}
.pj-sub{font-family:var(--mono);font-size:12px;letter-spacing:.14em;text-transform:uppercase;color:var(--muted);margin-bottom:16px}
.pj-fund{display:grid;grid-template-columns:1fr 1.25fr;gap:16px;margin-bottom:80px}
.pj-flag{background:var(--primary);color:#fff;padding:40px;display:flex;flex-direction:column;min-height:100%}
.pj-flag h3{font-size:clamp(24px,2.6vw,34px);line-height:1.3;margin:28px 0 12px;font-weight:700}
.pj-flag .tj{opacity:.8;font-size:15px}
.pj-flag .pj-org{margin-top:auto;padding-top:28px;border-top:1px solid rgba(255,255,255,.25);color:rgba(255,255,255,.8)}
.pj-flag .pj-org b{color:#fff}
.pj-flag .badge{background:#fff;color:var(--primary)}
.pj-flag .yrs{color:rgba(255,255,255,.8)}
.pj-top{display:flex;justify-content:space-between;align-items:center;gap:12px}
.badge{font-family:var(--mono);font-size:11px;letter-spacing:.1em;font-weight:500;padding:4px 10px;background:var(--primary);color:#fff;border-radius:2px}
.pj-kak .badge{background:transparent;color:var(--primary);border:1px solid var(--primary)}
.badge.big{font-size:14px;padding:6px 14px}
.yrs{font-family:var(--mono);font-size:13px;color:var(--muted)}
.pj-org{font-size:13px;display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap}
.pj-org b{font-weight:600}
.pj-org.sm{color:var(--muted);font-size:12px;margin-top:10px}
.pj-org.sm b{color:var(--primary)}
.pj-kak{list-style:none;display:grid;grid-template-columns:1fr 1fr;gap:16px}
.pj-kak a{display:block;background:#fff;border:1px solid var(--line);padding:22px 22px 20px;height:100%;transition:border-color .2s}
.pj-kak a:hover{border-color:var(--primary)}
.pj-kak .kt{font-size:14.5px;font-weight:600;line-height:1.5;margin-top:14px}
.pj-pubhead{display:flex;justify-content:space-between;align-items:end;gap:24px;flex-wrap:wrap;padding-bottom:16px;border-bottom:1px solid var(--ink)}
.pj-stats{display:flex;gap:32px}
.pj-stats span{display:flex;align-items:baseline;gap:8px;font-size:12px;color:var(--muted);font-family:var(--mono);letter-spacing:.06em}
.pj-stats b{font-family:var(--sans);font-size:34px;color:var(--primary);font-weight:700;letter-spacing:0}
.pj-pubs{list-style:none}
.pj-pubs a{display:grid;grid-template-columns:72px 1fr 300px;gap:32px;padding:24px 0;border-bottom:1px solid var(--line);align-items:baseline;transition:background .2s}
.pj-pubs a:hover{background:#fff}
.pj-pubs a:hover .pt{color:var(--primary)}
.py{font-family:var(--mono);font-size:14px;color:var(--primary)}
.pb{display:flex;flex-direction:column;gap:6px}
.pt{font-size:17px;font-weight:600;line-height:1.45}
.pa{font-size:13px;color:var(--muted)}
.pa b{color:var(--ink);font-weight:600}
.pjn{display:flex;flex-direction:column;gap:2px;font-size:14px}
.pjn i{font-weight:500}
.pjn small{font-family:var(--mono);font-size:12px;color:var(--muted)}
.pj-foot{display:flex;justify-content:space-between;align-items:center;gap:16px;margin-top:24px;font-size:12px;color:var(--muted);flex-wrap:wrap}
@media (max-width:960px){
  .pj-head{grid-template-columns:1fr;gap:16px;margin-bottom:40px}
  .pj-fund{grid-template-columns:1fr;margin-bottom:56px}
  .pj-flag{padding:28px}
  .pj-pubs a{grid-template-columns:56px 1fr;gap:8px 16px}
  .pjn{grid-column:2}
}
@media (max-width:560px){.pj-kak{grid-template-columns:1fr}.pj-stats b{font-size:26px}}

.pj-kak .kt.tbc{color:#b5461f}
.pj-ext{display:flex;gap:28px;flex-wrap:wrap}
/* news */
.news{background:#fff}
.news .head{display:flex;justify-content:space-between;align-items:end;margin-bottom:40px;gap:24px;flex-wrap:wrap}
.news .head .more{margin-top:0}
.nw{list-style:none;border-top:1px solid var(--line)}
.nw li a{display:grid;grid-template-columns:120px 110px 1fr 24px;gap:24px;padding:24px 0;border-bottom:1px solid var(--line);align-items:center}
.nw li a:hover .tt{color:var(--primary)}
.nw .d{font-family:var(--mono);font-size:13px;color:var(--muted)}
.nw .c{font-size:12px;border:1px solid var(--primary);color:var(--primary);padding:2px 10px;text-align:center;border-radius:2px}
.nw .ar{color:var(--muted)}
@media (max-width:720px){.nw li a{grid-template-columns:auto 1fr;gap:8px 16px}.nw .tt{grid-column:1/-1}.nw .ar{display:none}.nw .c{justify-self:start}}

/* join */
.join{background:var(--primary);color:#fff}
.join .label{color:rgba(255,255,255,.75)}
.join .grid{display:grid;grid-template-columns:1.1fr 1fr;gap:72px;align-items:start}
.join p{opacity:.85}
.jc{display:grid;gap:12px}
.jc a{display:flex;justify-content:space-between;align-items:center;padding:24px 28px;border:1px solid rgba(255,255,255,.3);transition:.2s;gap:16px}
.jc a:hover{background:rgba(255,255,255,.08);border-color:#fff}
.jc b{display:block;font-size:17px}
.jc span{font-size:13px;opacity:.75}
.jc i{font-style:normal;font-size:20px}
@media (max-width:900px){.join .grid{grid-template-columns:1fr;gap:40px}}

.pi .aff{display:flex;flex-direction:column;font-size:13px;color:var(--ink);margin:-4px 0 14px;line-height:1.6}
.adm{margin-top:80px;padding-top:56px;border-top:1px solid rgba(255,255,255,.25)}
.adm-h{display:flex;align-items:baseline;gap:24px;margin-bottom:28px;flex-wrap:wrap}
.adm-h .label{margin:0}
.adm-h h3{font-size:clamp(22px,2.4vw,30px)}
.adm-g{display:grid;grid-template-columns:1fr 1fr;gap:16px}
.adm-c{background:#fff;color:var(--ink);padding:32px;display:flex;flex-direction:column}
.adm-k{font-family:var(--mono);font-size:11px;letter-spacing:.14em;color:var(--primary);margin-bottom:10px}
.adm-c h4{font-size:20px;margin-bottom:10px}
.adm-p{font-size:14px;font-weight:600;padding:10px 14px;background:var(--soft);margin-bottom:14px;line-height:1.6}
.adm-c p{font-size:14px;color:var(--muted);margin-bottom:20px;opacity:1}
.adm-l{margin-top:auto;display:flex;flex-wrap:wrap;gap:8px}
.adm-l a{font-size:13px;font-weight:600;color:var(--primary);border:1px solid var(--primary);padding:8px 14px;border-radius:2px;transition:.2s;min-height:40px;display:inline-flex;align-items:center}
.adm-l a:hover{background:var(--primary);color:#fff}
@media (max-width:900px){.adm{margin-top:56px;padding-top:40px}.adm-g{grid-template-columns:1fr}.adm-c{padding:24px}}

/* contact */
.ct .grid{display:grid;grid-template-columns:1fr 1.3fr;gap:72px}
.ct form{display:grid;gap:20px;background:#fff;padding:40px;border:1px solid var(--line)}
.ct label{display:grid;gap:8px;font-size:13px;font-weight:600}
.ct input,.ct textarea,.ct select{font:inherit;font-size:15px;font-weight:400;padding:12px 14px;border:1px solid var(--line);border-radius:4px;background:var(--bg);min-height:48px}
.ct input:focus,.ct textarea:focus,.ct select:focus{outline:2px solid var(--primary);outline-offset:-1px;background:#fff}
.ct .row2{display:grid;grid-template-columns:1fr 1fr;gap:20px}
.ct .addr{margin-top:32px;font-size:14px;color:var(--muted);border-top:1px solid var(--line);padding-top:24px}
.ct .sent{padding:16px;background:var(--soft);color:var(--primary);font-weight:600;font-size:14px}
@media (max-width:900px){.ct .grid{grid-template-columns:1fr;gap:32px}.ct form{padding:24px}.ct .row2{grid-template-columns:1fr}}

.ct-dl{border-top:1px solid var(--ink)}
.ct-dl>div{display:grid;grid-template-columns:140px 1fr;gap:24px;padding:24px 0;border-bottom:1px solid var(--line)}
.ct-dl dt{font-family:var(--mono);font-size:12px;letter-spacing:.1em;color:var(--primary);padding-top:3px}
.ct-dl dd{font-size:16px;font-weight:500}
.ct-note{margin-top:20px;font-size:13px;color:var(--muted)}
@media (max-width:720px){.ct-dl>div{grid-template-columns:1fr;gap:4px}}
/* footer */
.ft{background:#141a20;color:rgba(255,255,255,.7);padding:56px 0 40px;font-size:13px}
.ft .in{display:flex;justify-content:space-between;gap:32px;flex-wrap:wrap;align-items:flex-start}
.ft .logo{display:inline-block}
.ft .logo img{height:44px}
.ft nav{display:flex;gap:24px;flex-wrap:wrap}
.ft nav a:hover{color:#fff}
.ft .cp{margin-top:40px;padding-top:24px;border-top:1px solid rgba(255,255,255,.12);font-family:var(--mono);font-size:11px;letter-spacing:.06em}

/* design-review switcher (not part of final site) */
.vswitch{position:fixed;left:50%;bottom:20px;transform:translateX(-50%);z-index:100;display:flex;align-items:center;gap:4px;background:#141a20;color:#fff;padding:6px;border-radius:999px;box-shadow:0 8px 30px rgba(0,0,0,.25);font-size:13px}
.vswitch .vs-l{padding:0 12px 0 14px;font-family:var(--mono);font-size:11px;letter-spacing:.1em;opacity:.7;white-space:nowrap}
.vswitch button{border:0;background:transparent;color:#fff;cursor:pointer;border-radius:999px;padding:10px 16px;display:flex;gap:8px;align-items:center;font:inherit;min-height:44px;white-space:nowrap}
.vswitch button b{font-family:var(--mono)}
.vswitch button:hover{background:rgba(255,255,255,.1)}
.vswitch button.on{background:#fff;color:#141a20}
@media (max-width:560px){.vswitch .vs-l{display:none}.vswitch button span{display:none}.vswitch button{padding:10px 18px}}

/* variant B tweaks: dark news */
.vB .about{background:var(--bg)}
.vC .research{background:var(--bg)}
.vC .news{background:var(--bg)}


.pi .ph.pi-img{aspect-ratio:4/5;padding:0;background:#eceef0;border:0;overflow:hidden}
.pi .ph.pi-img img{width:100%;height:100%;object-fit:cover;object-position:50% 15%}

.sn-fig img{width:100%;aspect-ratio:4/3;object-fit:cover}
.sn-fig img.sn-traj{aspect-ratio:auto;object-fit:contain;margin-top:14px;border-top:1px solid #e5e7ea;padding-top:12px}

.mp-img{width:100%;height:100%;object-fit:cover;display:block}
.mp-ph{width:100%;height:100%;display:grid;place-items:center;font-family:var(--mono);font-size:12px;letter-spacing:.1em;color:var(--muted);background:repeating-linear-gradient(135deg,var(--soft) 0 10px,#fff 10px 20px)}

/* キーワード：PCは横一列、スマホは2列×2行 */
.heroB .meta{display:grid;grid-template-columns:repeat(4,max-content);gap:14px 40px}
@media (max-width:900px){.heroB .meta{grid-template-columns:1fr 1fr;gap:14px 16px;letter-spacing:.04em}}
/* 英字の見出し：かたまり単位で折り返し、スマホでは文字間を詰める */
.eb-seg{display:block}
@media (max-width:720px){.heroA .eyebrow,.heroB .eyebrow,.heroC .eyebrow{letter-spacing:.03em;line-height:1.7}}
/* トップ写真 別案：白紺（明部=白、暗部=濃紺のデュオトーン） */
.heroB.tone-navy{--navy:color-mix(in srgb,var(--primary) 32%,#030716);background:var(--navy);isolation:isolate}
.heroB.tone-navy img{opacity:1;filter:grayscale(1) contrast(1.2) brightness(.88);z-index:0}
.heroB.tone-navy::before{content:"";position:absolute;inset:0;z-index:1;background:var(--navy);mix-blend-mode:screen}
.heroB.tone-navy::after{z-index:1;background:linear-gradient(180deg,color-mix(in srgb,var(--navy) 10%,transparent) 15%,color-mix(in srgb,var(--navy) 94%,transparent) 100%)}
.heroB.tone-navy .wrap{z-index:2}
/* ボタン：濃紺の上で境目がはっきり見えるよう白地に */
.heroB.tone-navy .btn-p{background:#fff;color:var(--navy);box-shadow:0 2px 12px rgba(0,0,0,.25)}
.heroB.tone-navy .btn-p:hover{filter:none;background:#e9eef8}
.heroB.tone-navy .btn-o{border:1.5px solid #fff;color:#fff;background:rgba(255,255,255,.08)}
.heroB.tone-navy .btn-o:hover{background:rgba(255,255,255,.18)}

/* ---------- 筑波大学ロゴ ----------
   VIマニュアル準拠：提供データの縦横比を変えない／縁取りしない／
   校章の高さ≧10mm（画面上 約38px）／周囲に校章の高さの1/8以上の余白 */
.univ-bar{background:#fff;border-bottom:1px solid var(--line)}
.univ-bar .wrap{display:flex;align-items:center;min-height:56px;padding-top:9px;padding-bottom:9px}
.univ-logo{display:inline-block;padding:5px 0;line-height:0}
.univ-logo img{height:38px;width:auto;display:block}
.ft-univ{margin-top:40px;background:#fff;border-radius:2px;padding:14px 20px;display:inline-block;line-height:0}
.ft-univ img{height:40px;width:auto;display:block}
@media (max-width:720px){.univ-bar .wrap{min-height:52px}.univ-logo img{height:38px;max-width:100%;object-fit:contain}.ft-univ img{height:38px}}

/* ロゴ差し替え：スクエアロックアップ＋IMAGINE THE FUTURE. */
.univ-bar .wrap{justify-content:space-between;gap:24px;min-height:68px}
.univ-logo img{height:46px}
.univ-slogan{height:46px;width:auto;display:block}
.ft-univ{display:inline-flex;align-items:center;gap:28px;padding:16px 22px}
.ft-univ img{height:52px}
.ft-univ .ft-slogan{height:52px}
@media (max-width:720px){.univ-bar .wrap{min-height:60px}.univ-logo img,.univ-slogan{height:40px}.ft-univ img,.ft-univ .ft-slogan{height:44px}}

/* IMAGINE THE FUTURE.：研究室ヘッダー（言語切替の右） */
.hdr-slogan{height:44px;width:auto;display:block;flex-shrink:0;margin-left:-4px}
.hdr-in{gap:20px}
.hdr-nav{margin-left:auto}
@media (max-width:1180px){.hdr-slogan{height:38px;margin-left:auto}}
@media (max-width:400px){.hdr-slogan{height:32px}}

/* 筑波大学ロゴ：研究室ロゴの左（縦組みロックアップ） */
.hdr-brand{display:flex;align-items:center;gap:18px;flex-shrink:0}
.hdr-univ{display:block;line-height:0;padding:4px 18px 4px 0;border-right:1px solid var(--line)}
.hdr-univ img{height:60px;width:auto;display:block}
.hdr-in{height:84px}
@media (max-width:1180px){.hdr-univ img{height:52px}.hdr-brand{gap:14px}.hdr-univ{padding-right:14px}}
@media (max-width:480px){.hdr-in{height:76px;gap:10px}.hdr-univ img{height:46px}.hdr-brand{gap:10px}.hdr-univ{padding-right:10px}.hdr-logo img{height:30px}.hdr-slogan{height:30px}}
.ft-univ img{height:72px}

/* 筑波大ロゴ追加で横幅が増えたため、メニュー折りたたみの幅を拡大 */
@media (max-width:1340px){
  .hdr-nav{display:none}.burger{display:block}
  .mnav.open{display:flex;flex-direction:column;border-top:1px solid var(--line);background:#fff;padding:8px 20px 20px}
  .mnav a{padding:14px 0;border-bottom:1px solid var(--line);font-weight:500}
  .hdr-slogan{height:38px;margin-left:auto}
}

/* ヘッダーだけ横幅を広げて、ロゴ2つ＋メニュー＋スローガンを1行に収める */
.hdr .wrap.hdr-in{max-width:1400px}
@media (min-width:1341px){.hdr-nav{gap:18px;font-size:13px}.hdr-in{gap:16px}.hdr-brand{gap:14px}.hdr-univ{padding-right:14px}.hdr-logo img{height:40px}}

/* スマホ：☰ボタンを潰さない（タップ領域44px確保） */
.burger{flex-shrink:0}
@media (max-width:480px){.hdr-in{gap:8px}.hdr-brand{gap:8px}.hdr-univ{padding-right:8px}.hdr-univ img{height:42px}.hdr-logo img{height:26px}.hdr-slogan{height:26px}.burger{width:44px;height:44px}}
@media (max-width:360px){.hdr-slogan{display:none}}

/* 大学ブランド要素（校章ロゴ＋スローガン）を左にまとめる */
.hdr-univ{display:flex;align-items:center;gap:12px}
.hdr-univ .hdr-slogan{height:40px;margin:0}
@media (max-width:1340px){.hdr-univ .hdr-slogan{height:36px;margin:0}}
@media (max-width:480px){.hdr-univ{gap:6px}.hdr-univ .hdr-slogan{height:24px}}
@media (max-width:360px){.hdr-univ .hdr-slogan{display:none}}
.burger{margin-left:auto}
@media (min-width:1341px){.hdr-nav{margin-left:auto}}
/* タグの丸印：紺背景で見えるよう明るい青に */
.heroB .meta .dot{background:#8fb6ff;box-shadow:0 0 0 4px rgba(143,182,255,.18)}
.pp-tag i{background:#8fb6ff;filter:none}

/* 英字ラベルを読みやすい大きさに */
.label{font-size:14px;letter-spacing:.12em}
.heroA .eyebrow,.heroB .eyebrow,.heroC .eyebrow{font-size:14px}
.heroB .meta{font-size:13.5px}
.sp-sub{font-size:14px;letter-spacing:.12em}
.cb-region{font-size:13px}
.pp-role{font-size:12.5px}
.adm-k,.ct-dl dt,.pj-sub,.sn-k{font-size:13px}
.badge{font-size:12px}
.rs-row h3 small,.rs-card .n em{font-size:12.5px}
.ft .cp{font-size:12px}
@media (max-width:720px){.label,.sp-sub{font-size:13px}.heroB .meta{font-size:12.5px}}

/* スマホ：キーワードを各1行に収める */
@media (max-width:420px){.heroB .meta{font-size:11.5px;letter-spacing:.02em;gap:12px 10px}.heroB .meta span{white-space:nowrap;gap:8px}}

/* 研究テーマ 01–04：それぞれ対応する色（群青→青→青緑→ティール） */
.research{--r1:#2c4a9e;--r2:#2d64a8;--r3:#1d7596;--r4:#1c8085}
.rs-flow b,.rs-flow b:first-child{background:#fff;color:var(--ink);border-color:var(--line);display:inline-flex;align-items:center;gap:8px}
.rs-flow b::before{content:"";width:8px;height:8px;border-radius:50%;background:var(--c)}
.rs-flow b:nth-of-type(1){--c:var(--r1)}.rs-flow b:nth-of-type(2){--c:var(--r2)}.rs-flow b:nth-of-type(3){--c:var(--r3)}.rs-flow b:nth-of-type(4){--c:var(--r4)}
.rs-flow b,.rs-flow b:first-child{border-color:color-mix(in srgb,var(--c) 45%,#fff);color:var(--c)}
.rs-card:nth-child(1){--c:var(--r1)}.rs-card:nth-child(2){--c:var(--r2)}.rs-card:nth-child(3){--c:var(--r3)}.rs-card:nth-child(4){--c:var(--r4)}
.rs-card .n span{color:var(--c);font-weight:500}
.rs-card .n em{color:var(--c)}
.rs-card::before{background:var(--c);width:40px}
.rs-card:hover::before{width:100%}
.rs-row:nth-child(1){--c:var(--r1)}.rs-row:nth-child(2){--c:var(--r2)}.rs-row:nth-child(3){--c:var(--r3)}.rs-row:nth-child(4){--c:var(--r4)}
.rs-row .n,.rs-row h3 small{color:var(--c)}

/* 研究テーマ：4つを対等に（流れの帯は外し、色も1色に統一） */
.rs-flow{display:none}
.rs-card:nth-child(n){--c:var(--primary)}
.rs-row:nth-child(n){--c:var(--primary)}
.rs-card .n em{color:var(--muted)}
.rs-card::before{width:0}
.rs-card:hover::before{width:100%}

/* 研究テーマ：流れの帯を戻し、4つとも同じ見た目（どれも強調しない） */
.rs-flow{display:flex}
.rs-flow b,.rs-flow b:first-child{background:#fff;color:var(--primary);border-color:color-mix(in srgb,var(--primary) 35%,#fff)}
.rs-flow b::before{display:none}
/* キーワード：スマホ（420px以下）は1列に並べて長い語も折り返さない */
@media (max-width:420px){.heroB .meta{grid-template-columns:1fr;gap:10px}}