:root{
  --bg:#fbfaf7; --surface:#ffffff; --ink:#1d1f24; --muted:#5d6370; --line:#e4e1da;
  --accent:#9b1b30; --accent-soft:#f6e9eb; --serif:"Source Serif 4",Georgia,serif;
  --sans:Inter,system-ui,-apple-system,"Segoe UI",sans-serif;
}
@media (prefers-color-scheme:dark){:root{
  --bg:#15171b; --surface:#1d2026; --ink:#e8e6e1; --muted:#a2a7b1; --line:#2e323a;
  --accent:#e0798a; --accent-soft:#3a2328;
}}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;background:var(--bg);color:var(--ink);font:16px/1.65 var(--sans);-webkit-font-smoothing:antialiased}
a{color:var(--accent);text-decoration:none}
a:hover{text-decoration:underline}
img{max-width:100%;height:auto}
.wrap{max-width:1080px;margin:0 auto;padding:0 20px}
h1,h2,h3{font-family:var(--serif);font-weight:600;line-height:1.25;letter-spacing:-.01em}
h1{font-size:2.3rem;margin:2.2rem 0 .8rem}
h2{font-size:1.45rem;margin:2.4rem 0 .8rem;padding-bottom:.35rem;border-bottom:1px solid var(--line)}
h3{font-size:1.1rem;margin:1.4rem 0 .5rem}
.lead{font-size:1.1rem;color:var(--muted);max-width:760px}
.muted{color:var(--muted)}
.count{font:500 .8rem var(--sans);color:var(--muted);background:var(--accent-soft);border-radius:99px;padding:.1rem .55rem;vertical-align:middle;margin-left:.3rem}

/* header */
header.site{position:sticky;top:0;z-index:10;background:color-mix(in srgb,var(--bg) 88%,transparent);backdrop-filter:blur(8px);border-bottom:1px solid var(--line)}
.bar{display:flex;align-items:center;justify-content:space-between;height:60px}
.brand{font:600 1.1rem var(--serif);color:var(--ink)}
.brand:hover{text-decoration:none}
header nav{display:flex;gap:.25rem}
header nav a{color:var(--muted);padding:.4rem .7rem;border-radius:6px;font-weight:500;font-size:.95rem}
header nav a:hover{color:var(--ink);background:var(--accent-soft);text-decoration:none}
header nav a.on{color:var(--accent);background:var(--accent-soft)}
#navtoggle,.burger{display:none}
@media (max-width:760px){
  .burger{display:block;width:40px;height:40px;cursor:pointer;position:relative}
  .burger span,.burger span::before,.burger span::after{position:absolute;left:9px;width:22px;height:2px;background:var(--ink);content:""}
  .burger span{top:19px}.burger span::before{top:-7px;left:0}.burger span::after{top:7px;left:0}
  header nav{display:none;position:absolute;top:60px;left:0;right:0;flex-direction:column;background:var(--surface);border-bottom:1px solid var(--line);padding:.5rem 20px 1rem}
  #navtoggle:checked~nav{display:flex}
  h1{font-size:1.8rem}
}

/* footer */
footer.site{margin-top:4rem;border-top:1px solid var(--line);font-size:.85rem;color:var(--muted)}
footer.site .wrap{display:flex;flex-wrap:wrap;justify-content:space-between;gap:.5rem;padding-top:1.4rem;padding-bottom:2rem}

/* home */
.hero{display:grid;grid-template-columns:234px 1fr;gap:2.5rem;align-items:center;margin-top:2.5rem}
.portrait{width:234px;aspect-ratio:1;object-fit:cover;border-radius:14px;box-shadow:0 10px 30px rgba(0,0,0,.12)}
.hero h1{margin:0 0 .35rem;font-size:2.2rem}
.eyebrow{margin:0;color:var(--accent);font-weight:600;text-transform:uppercase;letter-spacing:.08em;font-size:1rem}
.aff{margin:.3rem 0 1rem;color:var(--accent);font-size:1.15rem;line-height:1.5}
.aff a{color:inherit}
.actions{display:flex;flex-wrap:wrap;gap:.6rem;margin-top:1.2rem}
.btn{display:inline-block;background:var(--accent);color:#fff;padding:.55rem 1.1rem;border-radius:8px;font-weight:500;border:1px solid var(--accent)}
.btn:hover{text-decoration:none;filter:brightness(1.08)}
.btn.ghost{background:transparent;color:var(--accent)}
.stats{display:grid;grid-template-columns:repeat(4,1fr);gap:1rem;margin:2.5rem 0 0}
.stats div{background:var(--surface);border:1px solid var(--line);border-radius:10px;padding:1rem 1.2rem}
.stats b{display:block;font:600 1.7rem var(--serif);color:var(--accent)}
.stats span{color:var(--muted);font-size:.9rem}
.grid2{display:grid;grid-template-columns:1fr 320px;gap:2.5rem}
.side .box{background:var(--surface);border:1px solid var(--line);border-radius:10px;padding:.2rem 1.2rem .6rem;margin-top:2.4rem}
.side .box+.box{margin-top:1rem}
.side h3{margin-top:1rem}
@media (max-width:860px){
  .hero{grid-template-columns:1fr;gap:1.2rem}.portrait{width:162px}
  .grid2{grid-template-columns:1fr;gap:0}
  .stats{grid-template-columns:repeat(2,1fr)}
}

/* publications */
.publist{list-style:none;padding:0;margin:0}
.pub{display:grid;grid-template-columns:3.2rem 1fr;gap:.4rem;padding:.9rem 0;border-bottom:1px solid var(--line)}
.pub:last-child{border-bottom:0}
.pub:target{background:var(--accent-soft);border-radius:8px}
.num{color:var(--muted);font-variant-numeric:tabular-nums;font-size:.9rem;padding-top:.1rem}
.ptitle{font:600 1.03rem/1.4 var(--serif)}
.pauth{font-size:.93rem}
.pvenue{font-size:.9rem;color:var(--muted)}
.plinks{margin-top:.3rem}
.tag{display:inline-block;font-size:.75rem;font-weight:600;border:1px solid var(--line);border-radius:5px;padding:.05rem .45rem;margin-right:.25rem;background:var(--surface)}
.tag:hover{border-color:var(--accent);text-decoration:none}
.badge{font:600 .7rem var(--sans);text-transform:uppercase;letter-spacing:.05em;background:var(--accent);color:#fff;border-radius:4px;padding:.1rem .4rem;vertical-align:middle;margin-left:.3rem}
.yr{font-family:var(--sans);color:var(--accent);font-size:1rem;margin:1.6rem 0 0}
.filters{position:sticky;top:60px;z-index:5;background:var(--bg);padding:.8rem 0;border-bottom:1px solid var(--line)}
#q{width:100%;padding:.65rem .9rem;font:inherit;border:1px solid var(--line);border-radius:8px;background:var(--surface);color:var(--ink)}
#q:focus{outline:2px solid var(--accent);outline-offset:-1px}
.chips{display:flex;flex-wrap:wrap;gap:.4rem;margin-top:.6rem}
.chip{font:500 .85rem var(--sans);border:1px solid var(--line);background:var(--surface);color:var(--ink);border-radius:99px;padding:.3rem .8rem;cursor:pointer}
.chip.on{background:var(--accent);border-color:var(--accent);color:#fff}
#nres{margin:.4rem 0 0;font-size:.85rem}
ul.plain{padding-left:1.1rem}
ul.plain li{margin:.45rem 0}
.hidden{display:none!important}

/* research */
.cards{display:grid;grid-template-columns:repeat(auto-fill,minmax(300px,1fr));gap:1.2rem;margin-top:1.5rem}
.card{background:var(--surface);border:1px solid var(--line);border-radius:12px;overflow:hidden;color:var(--ink);transition:transform .15s,box-shadow .15s}
.card:hover{text-decoration:none;transform:translateY(-2px);box-shadow:0 8px 24px rgba(0,0,0,.08)}
.thumb{height:170px;background:#fff;display:flex;align-items:center;justify-content:center;border-bottom:1px solid var(--line)}
.thumb img{max-height:150px;object-fit:contain}
.card h3{margin:.9rem 1.1rem .3rem}
.card p{margin:0 1.1rem 1.1rem;color:var(--muted);font-size:.92rem}
.crumb{margin:1.6rem 0 0;font-size:.9rem;color:var(--muted)}
.topic{display:grid;grid-template-columns:1fr 300px;gap:2rem;align-items:start;padding:1rem 0;border-bottom:1px solid var(--line)}
.topic.noimg{grid-template-columns:1fr}
.topic h2{border:0;margin:.6rem 0 .3rem;font-size:1.25rem;padding:0}
.topic figure{margin:.8rem 0 0;background:#fff;border:1px solid var(--line);border-radius:10px;padding:.6rem}
.topic figure img{display:block;margin:auto;max-height:260px}
.refs-h{margin-top:3rem}
ul.codes{columns:2;column-gap:2rem;padding-left:1.1rem}
ul.codes li{break-inside:avoid;margin:.3rem 0;font-size:.93rem}
@media (max-width:760px){.topic{grid-template-columns:1fr}ul.codes{columns:1}}

/* group / teaching / cv */
ul.people{list-style:none;padding:0}
ul.people li{padding:.55rem 0 .55rem .9rem;border-left:3px solid var(--line);margin:.4rem 0}
ul.people li.cur{border-left-color:var(--accent)}
.now{display:block;color:var(--muted);font-size:.9rem}
.terms{display:grid;grid-template-columns:repeat(auto-fill,minmax(240px,1fr));gap:.8rem}
.term{background:var(--surface);border:1px solid var(--line);border-radius:10px;padding:.2rem 1rem .4rem}
.term h4{margin:.6rem 0 .2rem;color:var(--accent);font-size:.9rem}
.term ul{padding-left:1rem;margin:.2rem 0 .5rem;font-size:.93rem}
.toc{display:flex;flex-wrap:wrap;gap:.4rem;margin:1.2rem 0}
.toc a{border:1px solid var(--line);border-radius:99px;padding:.25rem .8rem;font-size:.85rem;background:var(--surface)}
ul.timeline{list-style:none;padding:0}
ul.timeline li{padding:.45rem 0 .45rem 1rem;border-left:2px solid var(--accent);margin:0}
section[id]{scroll-margin-top:70px}

.hero{position:relative}
.mcgill{position:absolute;top:-1.2rem;right:0}
.mcgill img{width:150px;display:block}
.hero>div{padding-right:170px}
.profiles{display:flex;flex-wrap:wrap;gap:.6rem}
.groupphoto{margin:2rem auto 0;max-width:80%}
.groupphoto img{width:100%;border-radius:12px;display:block}
.groupphoto figcaption{color:var(--muted);font-size:.9rem;margin-top:.5rem;text-align:center}
@media (max-width:860px){.mcgill img{width:108px}.hero>div{padding-right:0}.mcgill{top:0}}
.updated{margin-top:2.5rem;color:var(--muted);font-size:.9rem;font-style:italic}
details.fold{margin-top:2.4rem;border-bottom:1px solid var(--line)}
details.fold>summary{cursor:pointer;list-style:none;display:flex;align-items:baseline;gap:1rem;flex-wrap:wrap}
details.fold>summary::-webkit-details-marker{display:none}
details.fold>summary h2{margin:0;border:0;padding:0 0 .35rem}
details.fold>summary h2::before{content:"▸ ";color:var(--accent)}
details.fold[open]>summary h2::before{content:"▾ "}
details.fold>summary .muted{font-size:.85rem}
ul.news{list-style:none;padding:0}
ul.news li{padding:.6rem 0 .6rem 1rem;border-left:3px solid var(--accent)}
ul.news .when{display:block;font-weight:600;color:var(--accent);font-size:.9rem}