/* Additions on top of styles.css: tabs, contraction rail, research questions, lab, play, travel. */
:root{--copper:#b8653a}

/* ---------- tabs ---------- */
.tabbar-wrap{position:sticky;top:90px;z-index:15;background:rgba(246,241,230,.96);backdrop-filter:blur(10px);border-block:1px solid var(--line)}
.tabbar{display:flex;gap:6px;overflow-x:auto;scrollbar-width:none}
.tabbar::-webkit-scrollbar{display:none}
.tab{flex:0 0 auto;display:flex;align-items:baseline;gap:9px;background:none;border:0;border-bottom:2px solid transparent;padding:18px 16px 15px;font-size:13px;font-weight:550;color:var(--muted);white-space:nowrap}
.tab span{font-size:9px;letter-spacing:.1em;color:#8a978a}
.tab:hover{color:var(--ink)}
.tab.active{color:var(--ink);border-bottom-color:var(--green)}
.tab.active span{color:var(--copper)}
.tab:first-child{padding-left:0}
.panel[hidden]{display:none!important}
.work>.research{padding-top:80px}

/* ---------- contraction rail ---------- */
.rail{position:fixed;right:10px;top:50%;transform:translateY(-50%);height:min(60vh,500px);width:54px;z-index:25}
.rail canvas{position:absolute;inset:0;width:100%;height:100%}
.rail-labels{list-style:none;margin:0;padding:0;position:absolute;inset:0}
.rail-labels>li{position:absolute;right:44px;transform:translateY(-50%);display:flex;flex-direction:column;align-items:flex-end}
.rail-labels button{background:none;border:0;padding:2px 4px;font-size:10px;letter-spacing:.08em;text-transform:uppercase;font-weight:650;color:var(--muted);white-space:nowrap;opacity:0;transform:translateX(6px);transition:opacity .2s,transform .2s}
.rail-labels>li.on>button{opacity:1;transform:none;color:var(--green)}
.rail:hover .rail-labels button,.rail:focus-within .rail-labels button{opacity:1;transform:none}
.rail-tabs{list-style:none;margin:2px 0 0;padding:0;display:none;flex-direction:column;align-items:flex-end}
.rail:hover .rail-tabs,.rail:focus-within .rail-tabs{display:flex}
.rail-tabs button{font-size:9px;letter-spacing:.06em;color:#8a978a}
.rail-tabs button[aria-current]{color:var(--copper)}
.rail:hover::before{content:'';position:absolute;right:-14px;top:-24px;bottom:-24px;width:150px;background:linear-gradient(90deg,transparent,rgba(246,241,230,.94) 40%);z-index:-1}

/* ---------- research questions ---------- */
.research-topic strong{font-size:21px}
.research-topic small{text-transform:uppercase;letter-spacing:.08em;font-size:9px}
.research-topic{padding-block:20px}
.glyph{transition:opacity .4s}
.glyph text{font-family:var(--sans)}
.ongoing p:before{content:'·';margin-right:8px}

/* ---------- lab ---------- */
.video-card img{width:100%;height:auto;aspect-ratio:16/9;object-fit:cover;filter:saturate(.85)}
.video-card .card-meta{display:block;font-size:9px;letter-spacing:.1em;color:#637c53;margin-top:16px;font-weight:650}
.video-card h3{margin-top:8px}

/* ---------- play: robot academy ---------- */
.play-section{background:var(--light)}
.academy{display:grid;gap:18px}
.lvl-map{display:flex;flex-wrap:wrap;gap:14px 22px;align-items:flex-start}
.lvl-ch>span{display:block;font-size:10px;letter-spacing:.14em;font-weight:650;text-transform:uppercase;color:#5a6e54;margin-bottom:6px}
.lvl-ch ol{list-style:none;margin:0;padding:0;display:flex;gap:6px}
.lvl{display:flex;flex-direction:column;align-items:center;gap:2px;min-width:44px;background:var(--paper);border:1px solid var(--line);padding:6px 8px 5px;font-size:13px}
.lvl b{font-weight:650;font-size:14px}
.lvl span{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0)}
.lvl i{font-style:normal;font-size:10px;color:var(--copper);letter-spacing:1px;min-height:12px}
.lvl.on{background:var(--green);border-color:var(--green);color:#fff}
.lvl.on i{color:#f0c9a8}
.lvl.locked{opacity:.5;cursor:not-allowed}
.lvl.won:not(.on){border-color:#9db08f}
.game{display:grid;grid-template-columns:minmax(0,1.4fr) minmax(0,1fr);border:1px solid var(--line);background:var(--paper)}
.game-stage{border-right:1px solid var(--line);background:radial-gradient(circle at 1px 1px,#dcd8c8 1px,transparent 1.3px) 0 0/22px 22px,var(--paper);display:flex;flex-direction:column}
#game-canvas{display:block;width:100%;height:380px}
#game-plot{display:block;width:100%;border-top:1px solid var(--line);background:var(--paper)}
.game-panel{padding:24px 26px}
.lvl-kicker{font-size:11px;letter-spacing:.12em;text-transform:uppercase;font-weight:650;color:#5a6e54}
.lvl-title{font-family:var(--serif);font-weight:400;font-size:30px;letter-spacing:-.02em;line-height:1.15;margin-top:6px}
.lvl-mission{font-size:15px;line-height:1.7;color:var(--ink);margin-top:10px}
.controls{margin-top:6px}
.knob{display:grid;grid-template-columns:1fr auto;align-items:baseline;gap:4px 12px;margin-top:16px;font-size:14px}
.knob b{font-family:var(--serif);font-weight:400;font-size:17px}
.knob output{font-size:13px;font-weight:600;font-variant-numeric:tabular-nums}
.knob input{grid-column:1/-1;width:100%;accent-color:var(--green)}
.knob-meta{font-size:13px;color:var(--muted);margin-top:8px}
.grip{margin-top:16px;border:0}
.game-actions{display:flex;align-items:center;gap:16px;margin-top:18px;flex-wrap:wrap}
.game-actions .button{gap:16px;border:0;font-size:14px}
.reset{background:none;border:0;border-bottom:1px solid var(--ink);padding:2px 0;font-size:13px;font-weight:550}
.game-status{font-size:14px;color:var(--muted)}
.checks{list-style:none;margin:16px 0 0;padding:0;border-top:1px solid var(--line)}
.checks li{font-size:14px;padding:10px 0;border-bottom:1px solid var(--line);line-height:1.5}
.checks .mark{display:inline-block;width:20px;font-weight:700}
.checks .pass .mark{color:#4e7a43}
.checks .fail .mark{color:var(--copper)}
.checks em{font-style:normal;font-weight:650;margin-left:6px;font-variant-numeric:tabular-nums}
.checks small{display:block;margin-left:20px;color:var(--muted);font-size:13px}
.result{margin-top:16px;padding:16px 18px;background:#eef1e4;border-left:3px solid var(--green)}
.result .stars{font-size:26px;color:#c9902f;letter-spacing:3px}
.result .stars span{color:#d9d4c3}
.result p{font-size:14px;margin-top:4px}
.result .button{margin-top:12px;border:0;font-size:14px}
.result .fin{font-weight:600}
.learn-box{padding:6px 26px 20px;border-top:1px solid var(--line);background:var(--paper);flex:1}
.learn{margin-top:14px}
.learn+.learn{border-top:1px solid var(--line);padding-top:12px}
.learn summary{cursor:pointer;font-size:13px;font-weight:650;letter-spacing:.04em}
.learn p{font-size:14.5px;line-height:1.75;color:var(--muted);margin-top:8px}
.hall{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1.2fr);gap:0;border:1px solid var(--line);background:var(--paper)}
.hall-score{padding:22px 26px;border-right:1px solid var(--line)}
.hall-score strong{display:block;font-family:var(--serif);font-weight:400;font-size:52px;line-height:1.1;margin-top:6px}
.hall-score small{font-size:13px;color:var(--muted)}
.hall-form{display:flex;gap:10px;margin-top:16px}
.hall-form input{flex:1;min-width:0;border:1px solid var(--line);background:#fff;padding:10px 12px;font-size:14px}
.hall-form .button{border:0;font-size:13px}
.hall-form .button:disabled{opacity:.45;cursor:not-allowed}
.hall-note{font-size:12.5px;color:var(--muted);margin-top:10px}
.hall-links{font-size:12.5px;color:var(--muted);margin-top:8px}
.hall-links button{background:none;border:0;padding:0;border-bottom:1px solid var(--line);font-size:12.5px;color:var(--muted)}
.hall-board{padding:22px 26px}
.hall-board ol{list-style:none;margin:10px 0 0;padding:0}
.hall-board li{display:grid;grid-template-columns:28px 1fr auto 52px;gap:10px;align-items:baseline;padding:8px 0;border-bottom:1px solid var(--line);font-size:14px}
.hall-board li span{color:var(--muted);font-size:12px}
.hall-board li em{font-style:normal;font-weight:650;font-variant-numeric:tabular-nums}
.hall-board li small{color:var(--muted);text-align:right}
.hall-board li.empty{display:block;color:var(--muted)}

/* ---------- travel ---------- */
.maps{display:grid;grid-template-columns:minmax(0,.9fr) minmax(0,1.1fr);gap:24px;align-items:start}
.travel-map{position:relative;margin:0;background:#f1eadc;border:1px solid var(--line)}
.travel-map svg{display:block;width:100%;height:auto}
.travel-map figcaption{display:flex;justify-content:space-between;align-items:center;gap:12px;padding:10px 14px;border-top:1px solid var(--line);font-family:var(--serif);font-size:20px}
.pin{cursor:default}
.pin circle.dot{fill:#5b7950;stroke:#f6f1e6;stroke-width:2}
.pin.lived circle.dot{fill:var(--green)}
.pin circle.halo{fill:var(--copper);opacity:0;transition:opacity .2s}
.pin text{font-family:var(--sans);font-size:19px;font-weight:600;fill:var(--ink);paint-order:stroke;stroke:#f1eadc;stroke-width:4px}
.pin.on circle.halo,.pin:focus-visible circle.halo{opacity:.28}
.pin:focus{outline:none}
.map-legend{display:flex;gap:14px;font-family:var(--sans);font-size:12px;letter-spacing:.04em;color:var(--muted);font-weight:600}
.map-legend span{display:flex;align-items:center;gap:6px}
.lg{width:10px;height:10px;border-radius:50%;display:inline-block}
.lg.lived{background:var(--green)}
.lg.visited{background:#5b7950;box-shadow:0 0 0 2px #fff inset}
.inset-box{fill:#faf6ee;stroke:#a89f8c;stroke-width:1}
.inset-src{fill:none;stroke:#a89f8c;stroke-width:1;stroke-dasharray:3 3}
.inset-link{stroke:#a89f8c;stroke-width:1;stroke-dasharray:3 3;fill:none}
.inset-label{font-family:var(--sans);font-size:13px;font-weight:650;letter-spacing:.1em;fill:var(--muted)}

/* ---------- about: institutes, honours, events ---------- */
.inst{display:inline-grid;place-items:center;width:42px;height:42px;border-radius:50%;background:#fff;border:1px solid var(--line);flex:0 0 auto;overflow:hidden}
.inst img{width:34px;height:34px;object-fit:contain}
.inst.mono{font-size:10px;font-weight:700;letter-spacing:.06em;color:var(--green);background:#f1eadb}
.tl-head{display:flex;align-items:center;gap:10px;margin-top:8px}
.tl-head h3{margin-top:0}
.tl-head .inst+.inst{margin-left:-18px}
.timeline small em{font-style:italic}
.about-links{display:flex;gap:26px;flex-wrap:wrap}
.pmrf-chip{font-weight:650;color:var(--green);border-bottom:2px solid #d6a756}
.honours{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:16px;margin-top:64px}
.honour{border:1px solid var(--line);background:#fbf8f1;padding:20px 20px 22px}
.honour-tag{display:block;font-size:10.5px;letter-spacing:.12em;font-weight:650;color:#5a6e54}
.honour h3{font-family:var(--serif);font-weight:400;font-size:23px;line-height:1.2;margin-top:8px}
.honour p{font-size:14.5px;line-height:1.65;color:var(--muted);margin-top:8px}
.honour.pmrf{background:var(--green);border-color:var(--green);color:#f3eee2;position:relative;overflow:hidden}
.honour.pmrf::after{content:'';position:absolute;right:-30px;top:-30px;width:120px;height:120px;border-radius:50%;border:16px solid rgba(214,167,86,.35)}
.honour.pmrf .honour-tag{color:#e2c07f}
.honour.pmrf h3{font-size:27px}
.honour.pmrf p{color:#d3d9cc}
.teaching-grid article{display:flex;flex-direction:column;gap:2px}
.teaching-grid .inst{margin-bottom:10px}
.under-review{margin-top:22px;font-size:15px;color:var(--muted)}
.under-review strong{color:var(--ink);font-weight:600}
.events{margin-top:48px}
.events h3{font-family:var(--serif);font-weight:400;font-size:29px;letter-spacing:-.02em}
.events ul{list-style:none;margin:18px 0 0;padding:0;border-top:1px solid var(--line)}
.events li{display:grid;grid-template-columns:80px 1fr;gap:24px;padding:18px 0;border-bottom:1px solid var(--line)}
.events li>span{font-family:var(--serif);font-size:24px;color:#8a8a72}
.events h4{font-size:17px;font-weight:600}
.events p{font-size:15px;color:var(--muted);margin-top:4px;line-height:1.65}

@media(max-width:1050px){.maps{grid-template-columns:1fr}.honours{grid-template-columns:1fr 1fr}.game,.hall{grid-template-columns:1fr}.game-stage,.hall-score{border-right:0;border-bottom:1px solid var(--line)}}
@media(max-width:900px){
  .rail{top:74px;right:0;left:0;transform:none;height:14px;width:auto;background:rgba(246,241,230,.94);border-bottom:1px solid var(--line)}
  .rail-labels{display:none}
}
@media(max-width:800px){.tabbar-wrap{top:88px}.tab{padding:14px 12px 12px;font-size:12px}}
@media(max-width:560px){
  #game-canvas{height:300px}
  .lvl{min-width:38px;padding:5px 6px}
  .game-panel{padding:20px 18px}
  .pin text{font-size:24px}
  .honours{grid-template-columns:1fr}
  .events li{grid-template-columns:52px 1fr;gap:14px}
  .map-legend{position:static;padding:8px 12px;border-top:1px solid var(--line)}
}

/* ---------- readable type scale (overrides styles.css) ---------- */
body{font-size:17px}
.eyebrow{font-size:12px}
.header nav{font-size:14px}
.brand{font-size:11px}
.availability{font-size:10.5px}
.hero .eyebrow{font-size:11.5px}
.hero-intro{font-size:21px}
.hero-sub{font-size:14.5px}
.button,.text-link{font-size:14px}
.photo-caption{font-size:12.5px}
.caption-label,.portrait-mark{font-size:10.5px}
.opportunities .opportunity-detail{font-size:15px!important}
.opportunity-links .text-link{font-size:13.5px}
.section-lede{font-size:17px}
.research-topic small{font-size:11px}
.topic-number{font-size:11.5px}
.diagram-label{font-size:10px}
.feature-caption h3{font-size:21px}
.feature-caption p{font-size:15px}
.feature-tag{font-size:11px}
.ongoing>.eyebrow{font-size:11px}
.ongoing p{font-size:14px}
.code-intro>p:last-child{font-size:15px}
.code-language{font-size:10.5px}
.code-project p{font-size:14.5px}
.code-link{font-size:13px}
.filter{font-size:13px}
.search-box input{font-size:14px}
.publication-year{font-size:28px}
.authors{font-size:14px}
.venue{font-size:13px}
.pub-links,.pub-links a,.pub-links button{font-size:13px}
.pub-type{font-size:10.5px}
.about-copy p{font-size:16.5px}
.about-copy .large-copy{font-size:24px}
.timeline-date{font-size:11px}
.timeline p{font-size:15px}
.timeline small{font-size:14px}
.teaching-heading p{font-size:15px}
.teaching-grid span{font-size:12px}
.teaching-grid h4{font-size:16px}
.teaching-grid p{font-size:14px}
.contact-section .eyebrow{font-size:12px}
.contact-section p:not(.eyebrow){font-size:16px}
.contact-meta a,.contact-meta button{font-size:14px}
.footer p,.footer>a:last-child{font-size:12.5px}
.footer .brand{font-size:10px}
.video-card .card-meta{font-size:11px}
.video-card p{font-size:15px}
.tab{font-size:14.5px}
.tab span{font-size:10.5px}
@media(max-width:560px){body{font-size:16px}.hero-intro{font-size:18px}.about-copy .large-copy{font-size:21px}}

.inline-link{color:inherit;text-decoration:underline;text-decoration-color:#c9a25f;text-decoration-thickness:1.5px;text-underline-offset:3px}
.inline-link:hover{color:#3f5d45}