:root {
  --bg: #fbfcfe;
  --surface: #ffffff;
  --soft: #f3f6f8;
  --text: #16212b;
  --muted: #607080;
  --line: #dce4ea;
  --accent: #216b9e;
  --accent-dark: #154d74;
  --max: 1100px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: Inter, ui-sans-serif, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  color: var(--text);
  background: var(--bg);
  line-height: 1.65;
}
a { color: inherit; }
.wrap { width: min(var(--max), calc(100% - 40px)); margin: 0 auto; }

.site-header {
  position: sticky;
  top: 0;
  z-index: 10;
  background: rgba(251,252,254,.92);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid rgba(220,228,234,.75);
}
.nav-wrap {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 68px;
}
.brand {
  text-decoration: none;
  font-weight: 700;
  letter-spacing: -.02em;
}
nav { display: flex; gap: 26px; }
nav a { text-decoration: none; color: var(--muted); font-size: .95rem; }
nav a:hover { color: var(--text); }

.hero {
  min-height: 72vh;
  display: grid;
  grid-template-columns: 1.65fr .8fr;
  gap: 70px;
  align-items: center;
  padding-top: 72px;
  padding-bottom: 85px;
}
.eyebrow {
  margin: 0 0 10px;
  color: var(--accent);
  font-size: .76rem;
  font-weight: 700;
  letter-spacing: .16em;
}
h1 {
  margin: 0 0 20px;
  font-size: clamp(3rem, 7vw, 5.6rem);
  line-height: .98;
  letter-spacing: -.05em;
}
.lead {
  max-width: 760px;
  font-size: 1.16rem;
  color: var(--muted);
  margin: 0;
}
.hero-links { display: flex; align-items: center; gap: 14px; flex-wrap: wrap; margin-top: 30px; }
.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 10px 16px;
  border: 1px solid var(--line);
  border-radius: 999px;
  text-decoration: none;
  font-size: .92rem;
  background: var(--surface);
}
.button.primary { background: var(--accent); color: white; border-color: var(--accent); }
.button.primary:hover { background: var(--accent-dark); }
.text-link { color: var(--accent); text-decoration: none; font-weight: 600; }
.text-link:hover { text-decoration: underline; }
.hero-card {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 20px;
  padding: 26px;
  box-shadow: 0 14px 35px rgba(22,33,43,.06);
}
.hero-card span { color: var(--muted); font-size: .8rem; }
.hero-card strong { display: block; margin-top: 6px; font-size: 1.35rem; }
.hero-card p { margin: 8px 0 0; color: var(--muted); }
.hero-card .muted { margin-top: 22px; padding-top: 16px; border-top: 1px solid var(--line); font-size: .92rem; }

.section { padding: 92px 0; }
.section-soft { background: var(--soft); border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.section-head { margin-bottom: 34px; }
h2 { margin: 0; font-size: clamp(2rem, 4vw, 2.8rem); letter-spacing: -.035em; }
.inline-head { display: flex; align-items: end; justify-content: space-between; gap: 20px; }

.research-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  border-top: 1px solid var(--line);
}
.research-grid article { padding: 24px 22px 24px 0; border-bottom: 1px solid var(--line); }
.research-grid article:nth-child(odd) { padding-right: 40px; }
.research-grid article:nth-child(even) { padding-left: 40px; border-left: 1px solid var(--line); }
.research-grid h3 { margin: 0 0 8px; font-size: 1.1rem; }
.research-grid p { margin: 0; color: var(--muted); }

.pub-list { border-top: 1px solid var(--line); }
.pub { padding: 22px 0; border-bottom: 1px solid var(--line); }
.pub-title { margin: 0; font-size: 1.06rem; line-height: 1.45; }
.pub-meta { margin: 7px 0 0; color: var(--muted); font-size: .92rem; }

.contact-section { display: grid; grid-template-columns: 1fr .9fr; gap: 70px; align-items: start; }
.contact-copy { color: var(--muted); max-width: 620px; }
.contact-links { display: grid; gap: 12px; }
.contact-links a { text-decoration: none; padding-bottom: 11px; border-bottom: 1px solid var(--line); }
.contact-links a:hover { color: var(--accent); }

footer { border-top: 1px solid var(--line); }
.footer-inner { min-height: 76px; display: flex; justify-content: space-between; align-items: center; color: var(--muted); font-size: .86rem; }

@media (max-width: 850px) {
  .hero { grid-template-columns: 1fr; gap: 34px; min-height: auto; }
  .hero-card { max-width: 520px; }
  .research-grid { grid-template-columns: 1fr; }
  .research-grid article:nth-child(even) { padding-left: 0; border-left: 0; }
  .research-grid article:nth-child(odd) { padding-right: 0; }
  .inline-head { align-items: flex-start; flex-direction: column; }
  .contact-section { grid-template-columns: 1fr; gap: 30px; }
}

@media (max-width: 640px) {
  .wrap { width: min(var(--max), calc(100% - 28px)); }
  .site-header { position: static; }
  .nav-wrap { min-height: 62px; }
  nav { gap: 14px; }
  nav a { font-size: .85rem; }
  .hero { padding-top: 54px; padding-bottom: 62px; }
  h1 { font-size: 3.4rem; }
  .section { padding: 68px 0; }
  .footer-inner { flex-direction: column; justify-content: center; gap: 4px; padding: 14px 0; }
}

.hero-side {
  display: flex;
  flex-direction: column;
  align-items: flex-end;
  gap: 22px;
}
.profile-photo {
  width: 220px;
  height: 275px;
  object-fit: cover;
  object-position: center top;
  border-radius: 18px;
  border: 1px solid var(--line);
  box-shadow: 0 14px 35px rgba(22,33,43,.08);
  background: #fff;
}
.hero-side .hero-card {
  width: min(100%, 360px);
}
@media (max-width: 850px) {
  .hero-side { align-items: flex-start; }
  .profile-photo { width: 190px; height: 238px; }
}