:root{
  --bg:#ffffff;
  --surface:#f4f7fb;
  --text:#16222e;
  --muted:#5b6b7b;
  --accent:#1f4e79;        /* deep cool blue */
  --accent-2:#3a7ca5;      /* lighter blue */
  --accent-soft:#e8eef6;
  --border:#dde5ee;
  --max:920px;
  --sans:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,Helvetica,Arial,sans-serif;
  --serif:"Iowan Old Style",Georgia,"Times New Roman",serif;
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth;scroll-padding-top:70px}
body{font-family:var(--sans);color:var(--text);background:var(--bg);line-height:1.65;-webkit-font-smoothing:antialiased}
a{color:var(--accent);text-decoration:none}
a:hover{text-decoration:underline}
.wrap{max-width:var(--max);margin:0 auto;padding:0 24px}

/* ---------- nav ---------- */
nav{position:sticky;top:0;z-index:50;background:rgba(255,255,255,.88);backdrop-filter:saturate(180%) blur(12px);border-bottom:1px solid var(--border)}
nav .wrap{display:flex;align-items:center;justify-content:space-between;height:62px}
.brand{font-weight:700;font-size:1.02rem;letter-spacing:-.01em;color:var(--accent)}
.brand:hover{text-decoration:none}
.navlinks{display:flex;gap:24px}
.navlinks a{color:var(--muted);font-size:.9rem;font-weight:500}
.navlinks a:hover{color:var(--accent);text-decoration:none}
.navlinks a.active{color:var(--accent);font-weight:700}
.menu-btn{display:none;background:none;border:0;font-size:1.5rem;cursor:pointer;color:var(--accent)}
@media(max-width:760px){
  .navlinks{display:none;position:absolute;top:62px;left:0;right:0;flex-direction:column;gap:0;background:#fff;border-bottom:1px solid var(--border)}
  .navlinks.open{display:flex}
  .navlinks a{padding:14px 24px;border-top:1px solid var(--border)}
  .menu-btn{display:block}
}

/* ---------- hero (home) ---------- */
header.hero{padding:70px 0 50px;text-align:center}
.photo{display:block;width:240px;height:288px;border-radius:12px;object-fit:cover;box-shadow:0 6px 26px rgba(31,78,121,.18);background:var(--surface);margin:0 auto 24px}
@media(max-width:700px){ .photo{width:200px;height:240px} }
.eyebrow{font-size:.8rem;font-weight:700;letter-spacing:.12em;text-transform:uppercase;color:var(--accent-2);margin-bottom:8px}
.hero h1{font-size:2.7rem;line-height:1.05;letter-spacing:-.02em;margin-bottom:14px}
.hero .tagline{font-size:1.3rem;color:var(--text);max-width:32ch;margin:0 auto 18px;font-weight:400}
.hero .affil{color:var(--muted);font-size:.98rem;margin:0 auto 8px;line-height:1.5;max-width:none}
.hero p{max-width:none}
.badge{display:inline-block;background:var(--accent-soft);color:var(--accent);font-size:.8rem;font-weight:600;padding:6px 13px;border-radius:999px;margin-bottom:22px}
.links{display:flex;flex-wrap:wrap;gap:10px;justify-content:center}
.links a{display:inline-flex;align-items:center;border:1px solid var(--border);padding:8px 16px;border-radius:8px;font-size:.9rem;font-weight:500;color:var(--text)}
.links a:hover{border-color:var(--accent);color:var(--accent);text-decoration:none;background:var(--accent-soft)}
@media(max-width:700px){ .hero h1{font-size:2.1rem} .hero .tagline{font-size:1.12rem} }

/* ---------- inner page header ---------- */
.pagehead{padding:54px 0 0;text-align:center}
.pagehead h1{font-size:2.1rem;letter-spacing:-.02em}
.pagehead p{color:var(--muted);margin:10px auto 0;max-width:60ch}

/* ---------- sections ---------- */
section{padding:46px 0;border-top:1px solid var(--border)}
section:first-of-type{border-top:0}
section h2{font-size:1.45rem;letter-spacing:-.01em;margin-bottom:20px;display:flex;align-items:center;gap:12px}
section h2::before{content:"";width:20px;height:3px;background:var(--accent);border-radius:2px}
.lead{font-size:1.1rem}
p{margin-bottom:14px;max-width:74ch}
.muted{color:var(--muted)}

.interests{display:flex;flex-wrap:wrap;gap:8px;margin-top:18px}
.interests span{background:var(--surface);border:1px solid var(--border);font-size:.85rem;padding:6px 13px;border-radius:999px;color:var(--accent)}

/* research streams */
.stream{margin-top:26px}
.stream h3{font-size:1.12rem;color:var(--accent);margin-bottom:6px}
.stream > p{color:var(--text)}
.paper{border-left:3px solid var(--accent-soft);padding:4px 0 4px 16px;margin:14px 0}
.paper .pt{font-weight:600}
.paper .meta{font-size:.88rem;color:var(--muted)}

/* job market paper highlight */
.jmp{background:linear-gradient(135deg,var(--accent-soft),#f4f9fd);border:1px solid #cfdced;border-radius:12px;padding:22px 24px;margin-bottom:26px}
.jmp .tag{font-size:.74rem;font-weight:700;letter-spacing:.07em;text-transform:uppercase;color:var(--accent-2)}
.jmp h3{font-size:1.12rem;margin:6px 0 8px;color:var(--text)}

/* publication lists */
.pubgroup{margin-bottom:28px}
.pubgroup h3{font-size:.92rem;color:var(--accent-2);text-transform:uppercase;letter-spacing:.06em;font-weight:700;margin-bottom:12px}
ol.pubs{list-style:none}
ol.pubs li{padding:12px 0;border-bottom:1px solid var(--border);font-size:.97rem}
ol.pubs li:last-child{border-bottom:0}
.pubs .venue{font-style:italic;color:var(--muted)}
.you{font-weight:700;color:var(--accent)}
.note{font-size:.85rem;color:var(--accent-2);font-weight:600}

/* teaching */
.courses{display:grid;grid-template-columns:repeat(auto-fit,minmax(240px,1fr));gap:14px;margin:18px 0}
.course{background:var(--surface);border:1px solid var(--border);border-radius:10px;padding:16px 18px}
.course strong{display:block;font-size:1rem}
.course span{font-size:.86rem;color:var(--muted)}

/* awards */
ul.awards{list-style:none;margin-top:6px}
ul.awards li{padding:10px 0;border-bottom:1px solid var(--border);font-size:.96rem}
ul.awards li:last-child{border-bottom:0}
ul.awards .yr{color:var(--muted);font-size:.86rem}

/* cv embed */
.cv-frame{width:100%;height:80vh;min-height:600px;border:1px solid var(--border);border-radius:10px;margin-top:8px}

/* contact */
.contact-box{background:var(--surface);border:1px solid var(--border);border-radius:12px;padding:26px;display:flex;flex-wrap:wrap;gap:26px}
.contact-box .ci{font-size:.96rem}
.contact-box .ci b{display:block;font-size:.76rem;text-transform:uppercase;letter-spacing:.06em;color:var(--accent-2);margin-bottom:3px;font-weight:700}

footer{padding:38px 0;text-align:center;color:var(--muted);font-size:.84rem;border-top:1px solid var(--border)}