:root{
  --bg:#fbfaf7; --surface:#ffffff; --ink:#14202e; --muted:#5a6675; --line:#e4e1d9;
  --accent:#1f4e8c; --accent-ink:#ffffff; --accent-soft:#e8eef7; --shadow:0 1px 2px rgba(20,32,46,.06),0 8px 24px rgba(20,32,46,.06);
  --serif:"Source Serif 4",Georgia,"Times New Roman",serif;
  --sans:"Inter",-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,Helvetica,Arial,sans-serif;
}
@media (prefers-color-scheme:dark){
  :root{--bg:#0e141c;--surface:#151d28;--ink:#e8ecf1;--muted:#9aa6b4;--line:#243040;--accent:#7fb0ee;--accent-ink:#0e141c;--accent-soft:#1a2738;--shadow:none}
}
*{box-sizing:border-box}
html{scroll-behavior:smooth;scroll-padding-top:76px}
body{margin:0;background:var(--bg);color:var(--ink);font:17px/1.65 var(--sans);-webkit-font-smoothing:antialiased}
img{max-width:100%;height:auto;display:block}
a{color:var(--accent);text-decoration-thickness:1px;text-underline-offset:3px}
a:hover{text-decoration-thickness:2px}
h1,h2,h3{font-family:var(--serif);line-height:1.2;margin:0;font-weight:600;letter-spacing:-.01em}
p{margin:0 0 1em}
.container{width:min(1040px,100% - 40px);margin-inline:auto}

/* header */
.site-header{position:sticky;top:0;z-index:10;background:color-mix(in srgb,var(--bg) 88%,transparent);backdrop-filter:saturate(1.4) blur(10px);border-bottom:1px solid var(--line)}
.site-header .container{display:flex;align-items:center;justify-content:space-between;gap:20px;min-height:60px;flex-wrap:wrap}
.brand{font-family:var(--serif);font-weight:600;font-size:1.15rem;color:var(--ink);text-decoration:none}
.nav{display:flex;gap:4px;flex-wrap:wrap}
.nav a{color:var(--muted);text-decoration:none;font-size:.92rem;font-weight:500;padding:6px 12px;border-radius:999px}
.nav a:hover,.nav a.active{color:var(--accent);background:var(--accent-soft)}

/* hero */
.hero{padding:72px 0 56px}
.hero .container{display:grid;grid-template-columns:240px 1fr;gap:48px;align-items:center}
.portrait{width:240px;height:240px !important;border-radius:50%;object-fit:cover;object-position:68% 22%;border:1px solid var(--line);box-shadow:var(--shadow)}
.eyebrow{font-size:.8rem;letter-spacing:.12em;text-transform:uppercase;color:var(--accent);font-weight:600;margin-bottom:10px}
.hero h1{font-size:clamp(2.2rem,5vw,3.2rem);margin-bottom:6px}
.role{color:var(--muted);font-size:1.08rem;margin-bottom:20px}
.hero p.lead{font-size:1.08rem;max-width:62ch}
.actions{display:flex;flex-wrap:wrap;gap:10px;margin-top:24px}
.btn{display:inline-flex;align-items:center;gap:6px;padding:10px 18px;border-radius:8px;font-weight:600;font-size:.94rem;text-decoration:none;border:1px solid var(--line);color:var(--ink);background:var(--surface)}
.btn:hover{border-color:var(--accent);color:var(--accent)}
.btn.primary{background:var(--accent);border-color:var(--accent);color:var(--accent-ink)}
.btn.primary:hover{filter:brightness(1.08);color:var(--accent-ink)}

/* sections */
.section{padding:64px 0;border-top:1px solid var(--line)}
.section>.container>h2,.page-head h1{font-size:1.9rem;margin-bottom:8px}
.section .sub{color:var(--muted);margin-bottom:32px;max-width:65ch}
.two-col{display:grid;grid-template-columns:1fr 340px;gap:48px;align-items:start}
.figure{margin:0}
.figure img{border-radius:12px;border:1px solid var(--line);box-shadow:var(--shadow);width:100%;max-height:380px;object-fit:contain;background:#fff}
.figure figcaption{font-size:.82rem;color:var(--muted);margin-top:8px}

/* cards */
.cards{display:grid;grid-template-columns:repeat(auto-fill,minmax(290px,1fr));gap:22px}
.card{background:var(--surface);border:1px solid var(--line);border-radius:14px;overflow:hidden;display:flex;flex-direction:column;box-shadow:var(--shadow);transition:transform .15s,border-color .15s}
.card:hover{transform:translateY(-2px);border-color:var(--accent)}
.card .thumb{aspect-ratio:16/10;background:#fff;border-bottom:1px solid var(--line)}
.card .thumb img{width:100%;height:100% !important;object-fit:contain}
.card .body{padding:18px 20px 20px;display:flex;flex-direction:column;gap:8px;flex:1}
.card h3{font-size:1.15rem}
.card p{font-size:.93rem;color:var(--muted);margin:0;flex:1}
.card .more{font-size:.9rem;font-weight:600;text-decoration:none;margin-top:6px}

/* publications */
.pubs{list-style:none;margin:0;padding:0}
.pubs li{display:grid;grid-template-columns:64px 1fr;gap:16px;padding:18px 0;border-bottom:1px solid var(--line)}
.pubs li:first-child{padding-top:0}
.pubs .year{font-family:var(--serif);color:var(--muted);font-weight:600}
.pubs .title{font-weight:600;display:block;margin-bottom:2px;line-height:1.4}
.pubs .meta{color:var(--muted);font-size:.93rem}
.pubs .meta b{color:var(--ink)}
.tag{display:inline-block;font-size:.72rem;font-weight:600;letter-spacing:.04em;text-transform:uppercase;color:var(--accent);background:var(--accent-soft);padding:1px 8px;border-radius:999px;margin-left:6px;vertical-align:1px}
.pubs .links a{font-size:.85rem;font-weight:600;margin-right:12px}

/* about list */
.facts{display:grid;grid-template-columns:repeat(auto-fit,minmax(300px,1fr));gap:22px}
.fact{background:var(--surface);border:1px solid var(--line);border-radius:14px;padding:22px}
.fact h3{font-size:1.05rem;margin-bottom:8px}
.fact p{margin:0;color:var(--muted);font-size:.95rem}

/* contact */
.contact-card{background:var(--surface);border:1px solid var(--line);border-radius:14px;padding:28px;display:flex;flex-wrap:wrap;gap:24px;justify-content:space-between;align-items:center;box-shadow:var(--shadow)}
.contact-card h3{font-size:1.2rem;margin-bottom:4px}
.contact-card p{margin:0;color:var(--muted)}

/* research page */
.page-head{padding:64px 0 32px}
.page-head p{color:var(--muted);max-width:68ch;font-size:1.05rem}
.project{padding:48px 0;border-top:1px solid var(--line)}
.project h2{font-size:1.6rem;margin-bottom:6px}
.project .tags{margin-bottom:18px;color:var(--muted);font-size:.9rem}
.project .two-col.flip{grid-template-columns:340px 1fr}
.project .two-col.flip .figure{order:-1}
.project .two-col.single{grid-template-columns:1fr}
.toc{display:flex;flex-wrap:wrap;gap:8px;margin-top:20px}
.toc a{font-size:.88rem;text-decoration:none;padding:5px 14px;border:1px solid var(--line);border-radius:999px;color:var(--muted);background:var(--surface)}
.toc a:hover{color:var(--accent);border-color:var(--accent)}

/* footer */
.site-footer{border-top:1px solid var(--line);padding:32px 0 48px;color:var(--muted);font-size:.9rem}
.site-footer .container{display:flex;flex-wrap:wrap;gap:12px 24px;justify-content:space-between}
.site-footer a{color:var(--muted)}
.site-footer a:hover{color:var(--accent)}

@media (max-width:820px){
  .hero{padding:40px 0 36px}
  .hero .container{grid-template-columns:1fr;gap:24px;text-align:left}
  .portrait{width:150px;height:150px !important}
  .two-col,.project .two-col.flip{grid-template-columns:1fr;gap:24px}
  .project .two-col.flip .figure{order:0}
  .figure{max-width:420px}
  .section{padding:48px 0}
  .pubs li{grid-template-columns:1fr;gap:4px}
  body{font-size:16px}
}
@media (prefers-reduced-motion:reduce){html{scroll-behavior:auto}.card{transition:none}}
@media print{.site-header,.actions{display:none}.section{break-inside:avoid}}