:root{
  --paper:#FCFAF5;
  --paper-2:#F6F2E9;
  --ink:#1E2830;
  --ink-soft:#5C6670;
  --accent:#3E5C76;
  --accent-deep:#2C4459;
  --rule:#E4DED2;
  --tag-bg:#EEEAE0;
  --maxw:860px;
}
*{box-sizing:border-box;}
html{scroll-behavior:smooth;}
@media (prefers-reduced-motion: reduce){ html{scroll-behavior:auto;} }
body{
  margin:0;
  background:var(--paper);
  color:var(--ink);
  font-family:"IBM Plex Sans",system-ui,sans-serif;
  font-size:17px;
  line-height:1.65;
  -webkit-font-smoothing:antialiased;
}
a{color:var(--accent);text-decoration:none;}
a:hover{color:var(--accent-deep);text-decoration:underline;text-underline-offset:2px;}
a:focus-visible{outline:2px solid var(--accent);outline-offset:2px;border-radius:2px;}

/* ---------- nav ---------- */
header.nav{
  position:sticky;top:0;z-index:20;
  background:color-mix(in srgb, var(--paper) 92%, transparent);
  backdrop-filter:blur(6px);
  border-bottom:1px solid var(--rule);
}
.nav-inner{
  max-width:var(--maxw);margin:0 auto;padding:14px 24px;
  display:flex;align-items:baseline;justify-content:space-between;gap:18px;flex-wrap:wrap;
}
.brand{
  font-family:"Newsreader",serif;font-weight:600;font-size:1.15rem;letter-spacing:.01em;
  color:var(--ink);white-space:nowrap;
}
.brand:hover{text-decoration:none;color:var(--ink);}
.nav-links{display:flex;gap:20px;flex-wrap:wrap;align-items:baseline;}
.nav-links a{
  font-size:.82rem;letter-spacing:.04em;text-transform:uppercase;color:var(--ink-soft);
}
.nav-links a:hover{color:var(--accent-deep);text-decoration:none;}
.nav-links a.cv{color:var(--accent);font-weight:500;}
.nav-links a.active{color:var(--ink);border-bottom:2px solid var(--accent);padding-bottom:2px;}

/* ---------- layout ---------- */
main{max-width:var(--maxw);margin:0 auto;padding:0 24px;}
.page{padding:56px 0;}
.eyebrow{
  font-family:"IBM Plex Mono",monospace;font-size:.72rem;letter-spacing:.16em;
  text-transform:uppercase;color:var(--accent);margin:0 0 22px;
}
h2{
  font-family:"Newsreader",serif;font-weight:500;font-size:1.7rem;
  margin:0 0 24px;letter-spacing:.01em;
}
.subhead{
  font-family:"Newsreader",serif;font-weight:500;font-size:1.3rem;
  margin:52px 0 22px;padding-top:32px;border-top:1px solid var(--rule);letter-spacing:.01em;
}

/* ---------- hero / about ---------- */
.hero{padding:64px 0 8px;display:grid;grid-template-columns:210px 1fr;gap:44px;align-items:start;}
.portrait{
  width:210px;height:252px;border-radius:3px;overflow:hidden;
  background:linear-gradient(160deg,var(--paper-2),#EAE4D7);
  border:1px solid var(--rule);
}
.portrait img{width:100%;height:100%;object-fit:cover;display:block;}
.hero h1{
  font-family:"Newsreader",serif;font-weight:600;font-size:2.6rem;line-height:1.1;
  margin:0 0 10px;letter-spacing:-.01em;
}
.role{
  font-family:"IBM Plex Mono",monospace;font-size:.8rem;line-height:1.7;letter-spacing:.03em;
  color:var(--ink-soft);margin:0 0 24px;
}
.role .inst{color:var(--accent-deep);}
.bio p{margin:0 0 16px;}
.bio p:last-child{margin-bottom:0;}
.quicklinks{
  margin-top:26px;font-family:"IBM Plex Mono",monospace;font-size:.8rem;letter-spacing:.02em;
}

/* ---------- paper ledger ---------- */
.paper{
  padding:22px 0;border-top:1px solid var(--rule);
  display:grid;grid-template-columns:1fr auto;gap:6px 20px;
}
.paper:first-of-type{border-top:none;padding-top:0;}
.paper .title{font-weight:500;grid-column:1;}
.paper .authors{grid-column:1;color:var(--ink-soft);font-size:.95rem;margin-top:2px;}
.paper .meta{
  grid-column:1;font-family:"IBM Plex Mono",monospace;font-size:.78rem;
  color:var(--ink-soft);letter-spacing:.02em;margin-top:6px;line-height:1.5;
}
.paper .meta a{font-family:inherit;}
.paper .feat{grid-column:1;font-size:.85rem;font-style:italic;color:var(--ink-soft);margin-top:5px;}
.tag{
  grid-column:2;grid-row:1;align-self:start;justify-self:end;
  font-family:"IBM Plex Mono",monospace;font-size:.66rem;letter-spacing:.08em;
  text-transform:uppercase;padding:3px 9px;border-radius:2px;white-space:nowrap;
  background:var(--tag-bg);color:var(--ink-soft);border:1px solid var(--rule);
}
.tag.pub{background:#E4EBEF;color:var(--accent-deep);border-color:#CBD9E2;}
.tag.rr{background:#EFEAE0;color:#7A5A2E;border-color:#E1D4BC;}

/* ---------- disclosure toggles (abstract / key finding) ---------- */
.hidden{display:none;}
.disclosures{
  grid-column:1 / -1;margin-top:12px;
  display:flex;flex-wrap:wrap;gap:6px 26px;align-items:flex-start;
}
.disclosures details{flex:0 0 auto;}
.disclosures details[open]{flex:1 1 100%;}
.disclosures summary{
  font-family:"IBM Plex Mono",monospace;font-size:.72rem;letter-spacing:.08em;text-transform:uppercase;
  color:var(--accent);cursor:pointer;list-style:none;display:inline-flex;align-items:center;gap:6px;
  user-select:none;
}
.disclosures summary::-webkit-details-marker{display:none;}
.disclosures summary::before{content:"\25B8";display:inline-block;transition:transform .15s ease;font-size:.8em;}
.disclosures details[open] summary::before{transform:rotate(90deg);}
.disclosures summary:hover{color:var(--accent-deep);}
.disclosures details > p,
.disclosures .figure{
  margin:12px 0 4px;font-size:.95rem;color:var(--ink);
  padding:14px 18px;background:var(--paper-2);border-radius:3px;border:1px solid var(--rule);
}
.disclosures .figure{width:100%;}
.disclosures .figure img{max-width:100%;height:auto;display:block;margin:0 auto;border:1px solid var(--rule);border-radius:3px;}
.disclosures .figure figcaption,
.disclosures .figure .caption{margin-top:10px;font-size:.85rem;font-style:italic;color:var(--ink-soft);text-align:center;}
.disclosures .figure table{border-collapse:collapse;width:100%;font-size:.9rem;}
.disclosures .figure th,
.disclosures .figure td{border:1px solid var(--rule);padding:6px 10px;text-align:left;}
.disclosures .figure th{background:#EAE4D7;font-weight:600;}

.section-lead{margin:0 0 26px;color:var(--ink-soft);font-size:.98rem;}
.section-lead a{white-space:nowrap;}

/* ---------- teaching ---------- */
.course{padding:16px 0;border-top:1px solid var(--rule);}
.course:first-of-type{border-top:none;padding-top:0;}
.course .cname{font-weight:500;}
.course .cnote{color:var(--ink-soft);font-size:.95rem;}
.course .cstats{
  font-family:"IBM Plex Mono",monospace;font-size:.76rem;color:var(--ink-soft);
  letter-spacing:.02em;margin-top:6px;line-height:1.5;
}
.prog{
  font-family:"IBM Plex Mono",monospace;font-size:.72rem;letter-spacing:.1em;text-transform:uppercase;
  color:var(--accent);margin:30px 0 4px;
}
.recognition{margin-top:26px;font-size:.95rem;color:var(--ink-soft);}
.recognition strong{color:var(--ink);font-weight:500;}
.award{padding:18px 0;border-top:1px solid var(--rule);}
.award:first-of-type{border-top:none;padding-top:0;}
.award .ayear{font-family:"IBM Plex Mono",monospace;font-size:.78rem;color:var(--accent);letter-spacing:.03em;}
.award .aname{font-weight:500;}
.award .adesc{color:var(--ink-soft);font-size:.94rem;margin-top:5px;}
.award .adesc a{white-space:normal;}

/* ---------- contact ---------- */
.contact-grid{display:grid;grid-template-columns:auto 1fr;gap:12px 28px;font-size:1rem;max-width:620px;}
.contact-grid dt{font-family:"IBM Plex Mono",monospace;font-size:.74rem;letter-spacing:.08em;text-transform:uppercase;color:var(--ink-soft);padding-top:4px;}
.contact-grid dd{margin:0;}

footer{
  max-width:var(--maxw);margin:0 auto;padding:26px 24px 48px;
  border-top:1px solid var(--rule);
  font-family:"IBM Plex Mono",monospace;font-size:.74rem;letter-spacing:.04em;
  color:var(--ink-soft);
}

@media (max-width:640px){
  .hero{grid-template-columns:1fr;gap:24px;padding-top:44px;}
  .portrait{width:160px;height:192px;}
  .hero h1{font-size:2.1rem;}
  .nav-inner{padding:12px 20px;}
  main{padding:0 20px;}
}