:root{
  --bg:#ffffff; --alt:#f7f8fa; --fg:#1a1d21; --muted:#5f6672; --border:#e6e8ec;
  --accent:#2457d6; --accent-soft:#eef2fd;
  --maxw:900px; --narrow:720px; --nav-h:56px; --radius:14px;
  --shadow:0 1px 2px rgba(16,24,40,.04), 0 10px 30px rgba(16,24,40,.06);
  --font:'Inter',-apple-system,BlinkMacSystemFont,'Segoe UI',Roboto,Helvetica,Arial,sans-serif;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;font-family:var(--font);color:var(--fg);background:var(--bg);
  font-size:17px;line-height:1.65;-webkit-font-smoothing:antialiased;text-rendering:optimizeLegibility}
a{color:var(--accent);text-decoration:none}
a:hover{text-decoration:underline}
h1,h2,h3{line-height:1.2;letter-spacing:-.02em;margin:0}
img{max-width:100%;display:block}

.container{max-width:var(--maxw);margin:0 auto;padding:0 24px}
.container.narrow{max-width:var(--narrow)}

/* Nav */
.nav{position:sticky;top:0;z-index:50;height:var(--nav-h);background:rgba(255,255,255,.82);
  backdrop-filter:saturate(180%) blur(12px);border-bottom:1px solid var(--border)}
.nav-inner{max-width:var(--maxw);margin:0 auto;padding:0 24px;height:var(--nav-h);
  display:flex;align-items:center;justify-content:space-between}
.nav-brand{font-weight:800;font-size:1.05rem;color:var(--fg);letter-spacing:-.03em}
.nav-brand:hover{text-decoration:none}
.nav-links{list-style:none;display:flex;gap:24px;margin:0;padding:0}
.nav-links a{color:var(--muted);font-weight:500;font-size:.95rem}
.nav-links a:hover{color:var(--fg);text-decoration:none}

/* Hero */
.hero{padding:56px 0 40px}
.hero-grid{display:grid;grid-template-columns:180px 1fr;gap:36px;align-items:center}
.avatar{width:180px;height:180px;border-radius:18px;object-fit:cover;box-shadow:var(--shadow);
  border:1px solid var(--border)}
.hero-body h1{font-size:2.4rem;font-weight:800}
.role{margin:.35em 0 .15em;font-weight:600;font-size:1.05rem}
.affil{margin:0 0 .6em;color:var(--muted);font-size:.95rem;line-height:1.5}
.tagline{margin:0 0 18px;color:var(--fg)}
.links{display:flex;flex-wrap:wrap;gap:10px}
.btn{display:inline-flex;align-items:center;gap:8px;padding:8px 15px;border-radius:999px;
  font-weight:600;font-size:.9rem;border:1px solid var(--border);background:#fff;color:var(--fg);transition:.15s}
.btn:hover{text-decoration:none;transform:translateY(-1px);box-shadow:var(--shadow);border-color:#d7dbe0}
.btn i{color:var(--accent)}
.availability{display:inline-flex;align-items:flex-start;gap:9px;margin:18px 0 0;font-size:.92rem;
  color:#146c43;background:#e8f6ee;border:1px solid #bfe3cc;padding:9px 15px;border-radius:10px;max-width:100%}
.availability i{color:#1a8a4e;margin-top:3px}
.availability strong{color:#0f5132}
.availability a{color:#146c43;font-weight:600;text-decoration:underline}

/* Sections */
.section{padding:48px 0}
.section.alt{background:var(--alt);border-top:1px solid var(--border);border-bottom:1px solid var(--border)}
.section h2{font-size:1.5rem;margin-bottom:20px}
.section p{margin:0 0 14px}

/* Chips */
.chips{list-style:none;display:flex;flex-wrap:wrap;gap:8px;padding:0;margin:18px 0 0}
.chips li{font-size:.85rem;color:var(--muted);background:#fff;border:1px solid var(--border);
  padding:5px 12px;border-radius:999px}
.section.alt .chips li{background:var(--bg)}

/* News */
.news{list-style:none;padding:0;margin:0;display:flex;flex-direction:column;gap:12px}
.news li{display:flex;gap:16px;align-items:baseline}
.news-date{flex:0 0 74px;font-weight:700;color:var(--accent);font-size:.9rem;white-space:nowrap}

/* Publications */
.pub{display:grid;grid-template-columns:250px 1fr;gap:24px;align-items:start;
  padding:22px 0;border-bottom:1px solid var(--border)}
.pub:last-child{border-bottom:0}
.pub-thumb{display:block;border:1px solid var(--border);border-radius:10px;overflow:hidden;
  box-shadow:var(--shadow);background:#f2f3f5}
.pub-thumb img{width:100%;height:auto;display:block;transition:transform .3s ease}
.pub-thumb:hover img{transform:scale(1.03)}
.pub-title{font-size:1.05rem;font-weight:700;margin-bottom:4px;letter-spacing:-.01em}
.pub-title a{color:var(--fg)}
.pub-title a:hover{color:var(--accent);text-decoration:none}
.pub-authors{margin:0 0 2px;font-size:.95rem}
.pub-venue{margin:0 0 8px;color:var(--muted);font-size:.9rem}
.pub-links{margin:0;display:flex;flex-wrap:wrap;gap:8px}
.pub-links a{font-size:.82rem;font-weight:600;padding:3px 11px;border:1px solid var(--border);
  border-radius:999px;background:#fff}
.pub-links a:hover{text-decoration:none;border-color:var(--accent);color:var(--accent)}
.tag{display:inline-block;font-size:.72rem;font-weight:700;text-transform:uppercase;letter-spacing:.04em;
  color:var(--accent);background:var(--accent-soft);padding:1px 8px;border-radius:6px;vertical-align:middle}

/* Education timeline */
.timeline{list-style:none;padding:0;margin:0;display:flex;flex-direction:column;gap:14px}
.timeline li{display:flex;gap:18px;align-items:baseline;flex-wrap:wrap}
.when{flex:0 0 120px;font-weight:600;color:var(--muted);font-size:.9rem;font-variant-numeric:tabular-nums}
.what{flex:1 1 320px}

/* Footer */
.footer{padding:32px 0;border-top:1px solid var(--border);text-align:center}
.footer p{margin:0;color:var(--muted);font-size:.9rem}

/* Responsive */
@media (max-width:640px){
  body{font-size:16px}
  .hero{padding:36px 0 28px}
  .hero-grid{grid-template-columns:1fr;gap:20px;text-align:center;justify-items:center}
  .avatar{width:150px;height:150px}
  .hero-body h1{font-size:2rem}
  .links{justify-content:center}
  .nav-links{gap:16px}
  .news li,.timeline li{flex-direction:column;gap:2px}
  .pub{grid-template-columns:1fr;gap:14px}
  .when{flex-basis:auto}
}