:root {
  --ink: #152033;
  --muted: #5d6878;
  --line: #dfe4ea;
  --paper: #ffffff;
  --soft: #f5f7fa;
  --navy: #10233f;
  --blue: #245ea8;
  --gold: #c78f2c;
  --teal: #1d7d78;
  --radius: 18px;
  --shadow: 0 18px 50px rgba(19, 35, 57, 0.12);
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  color: var(--ink);
  background: var(--paper);
  font-family: "Inter", system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  line-height: 1.65;
}
a { color: inherit; }
img { max-width: 100%; display: block; }
.container { width: min(1120px, calc(100% - 40px)); margin: 0 auto; }
.skip-link { position: absolute; left: -9999px; top: 0; background: #fff; padding: 10px; z-index: 1000; }
.skip-link:focus { left: 10px; }

.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(255,255,255,.92);
  backdrop-filter: blur(14px);
  border-bottom: 1px solid rgba(223,228,234,.8);
}
.nav-wrap { min-height: 76px; display: flex; align-items: center; justify-content: space-between; gap: 24px; }
.brand { display: flex; align-items: center; gap: 12px; text-decoration: none; }
.brand-mark {
  width: 44px; height: 44px; display: grid; place-items: center;
  border-radius: 50%; background: var(--navy); color: #fff; font-weight: 700;
}
.brand strong, .brand small { display: block; }
.brand small { color: var(--muted); font-size: .77rem; margin-top: 2px; }
.site-nav { display: flex; align-items: center; gap: 24px; }
.site-nav a { text-decoration: none; color: var(--muted); font-size: .95rem; font-weight: 600; }
.site-nav a:hover { color: var(--blue); }
.menu-toggle { display: none; border: 0; background: transparent; padding: 8px; }
.menu-toggle span:not(.sr-only) { display: block; width: 24px; height: 2px; background: var(--ink); margin: 5px 0; }

.hero {
  position: relative;
  overflow: hidden;
  padding: 96px 0 80px;
  background:
    radial-gradient(circle at 85% 10%, rgba(36,94,168,.15), transparent 27%),
    linear-gradient(180deg, #f8fafc 0%, #ffffff 100%);
}
.hero::after {
  content: "";
  position: absolute; inset: auto -140px -190px auto;
  width: 430px; height: 430px; border: 60px solid rgba(199,143,44,.12); border-radius: 50%;
}
.hero-grid { display: grid; grid-template-columns: 1.55fr .75fr; gap: 72px; align-items: center; position: relative; z-index: 1; }
.eyebrow, .section-kicker, .program-type {
  text-transform: uppercase; letter-spacing: .13em; font-size: .77rem; font-weight: 700; color: var(--blue);
}
h1, h2, h3 { font-family: Inter, system-ui, -apple-system, "Segoe UI", sans-serif; line-height: 1.15; margin-top: 0; }
h1 { font-size: clamp(2.8rem, 6vw, 5.4rem); letter-spacing: -.045em; margin-bottom: 28px; max-width: 900px; }
h2 { font-size: clamp(2.1rem, 4vw, 3.7rem); letter-spacing: -.035em; margin-bottom: 28px; }
h3 { font-size: 1.45rem; margin-bottom: 12px; }
.hero-lede { font-size: 1.15rem; color: var(--muted); max-width: 760px; }
.hero-actions, .button-row { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 30px; }
.button {
  display: inline-flex; align-items: center; justify-content: center;
  min-height: 48px; padding: 0 20px; border-radius: 999px; font-weight: 700;
  text-decoration: none; border: 1px solid var(--line); transition: .2s ease;
}
.button:hover { transform: translateY(-2px); box-shadow: 0 10px 24px rgba(19,35,57,.12); }
.button-primary { background: var(--navy); color: #fff; border-color: var(--navy); }
.button-secondary { background: #fff; color: var(--ink); }
.hero-facts { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; margin-top: 52px; }
.hero-facts div { padding-top: 18px; border-top: 1px solid var(--line); }
.hero-facts strong { font-size: 1.55rem; display: block; }
.hero-facts span { color: var(--muted); font-size: .85rem; display: block; margin-top: 4px; }

.profile-card { background: #fff; border: 1px solid var(--line); border-radius: 28px; overflow: hidden; box-shadow: var(--shadow); }
.portrait-placeholder {
  aspect-ratio: 4 / 4.3; display: grid; place-items: center;
  background: linear-gradient(145deg, var(--navy), var(--blue));
  color: #fff; font-family: Inter, system-ui, -apple-system, "Segoe UI", sans-serif; font-size: 5rem;
}
.profile-card-body { padding: 28px; }
.profile-card-body h2 { font-size: 1.7rem; margin-bottom: 14px; }
.profile-card-body p { margin: 8px 0; font-size: .92rem; }
.affiliation { color: var(--blue); font-weight: 700; }

.section { padding: 96px 0; }
.section-muted { background: var(--soft); }
.section-dark { background: var(--navy); color: #fff; }
.section-dark .section-kicker { color: #8fc3ff; }
.section-accent { background: #eaf3f2; }
.split { display: grid; grid-template-columns: .85fr 1.15fr; gap: 88px; align-items: start; }
.prose { font-size: 1.08rem; color: var(--muted); }
.prose p:first-child { margin-top: 0; }
.section-intro { color: var(--muted); max-width: 640px; font-size: 1.05rem; }

.card-grid { display: grid; gap: 24px; margin-top: 48px; }
.card-grid.three { grid-template-columns: repeat(3, 1fr); }
.card {
  background: #fff; border: 1px solid var(--line); border-radius: var(--radius);
  padding: 30px; min-height: 260px;
}
.card-number { color: var(--gold); font-weight: 700; font-size: .85rem; }
.card h3 { margin-top: 42px; }
.card p { color: var(--muted); }

.research-list { margin-top: 52px; border-top: 1px solid var(--line); }
.research-list article {
  display: grid; grid-template-columns: 80px 1fr; gap: 22px; padding: 32px 0;
  border-bottom: 1px solid var(--line);
}
.research-list article > span { color: var(--gold); font-weight: 700; }
.research-list p { margin: 0; color: var(--muted); max-width: 840px; }

.program-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; margin-top: 48px; }
.program-card {
  padding: 30px; border: 1px solid rgba(255,255,255,.18); border-radius: var(--radius);
  background: rgba(255,255,255,.055);
}
.program-card h3 { font-size: 1.65rem; }
.program-card p, .program-card li { color: rgba(255,255,255,.77); }
.program-card ul { padding-left: 20px; margin-bottom: 0; }
.program-card li { margin: 8px 0; }

.publication-list { border-top: 1px solid var(--line); }
.publication-list article { padding: 24px 0; border-bottom: 1px solid var(--line); }
.pub-meta { color: var(--blue); font-size: .8rem; text-transform: uppercase; letter-spacing: .08em; font-weight: 700; margin-bottom: 8px; }
.publication-list h3 { margin-bottom: 8px; }
.publication-list p:last-child { color: var(--muted); margin-bottom: 0; }

.quote { max-width: 920px; text-align: center; }
blockquote { margin: 0; font-family: Inter, system-ui, -apple-system, "Segoe UI", sans-serif; font-size: clamp(2rem, 4vw, 3.3rem); line-height: 1.25; letter-spacing: -.03em; }
.quote p { margin-top: 24px; color: var(--teal); font-weight: 700; }

.contact-grid { display: grid; grid-template-columns: 1.15fr .85fr; gap: 72px; }
.contact-card { background: var(--soft); border-radius: var(--radius); padding: 32px; }
.contact-card a { color: var(--blue); }

.site-footer { background: #0c1728; color: rgba(255,255,255,.72); padding: 28px 0; }
.footer-wrap { display: flex; justify-content: space-between; gap: 20px; font-size: .86rem; }
.sr-only { position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip: rect(0,0,0,0); white-space: nowrap; border: 0; }

@media (max-width: 900px) {
  .hero-grid, .split, .contact-grid { grid-template-columns: 1fr; gap: 44px; }
  .profile-card { max-width: 520px; }
  .card-grid.three, .program-grid { grid-template-columns: 1fr; }
  .hero-facts { grid-template-columns: 1fr; }
  .site-nav {
    display: none; position: absolute; top: 76px; left: 0; right: 0;
    background: #fff; padding: 22px 20px 28px; border-bottom: 1px solid var(--line);
    flex-direction: column; align-items: flex-start;
  }
  .site-nav.open { display: flex; }
  .menu-toggle { display: block; }
}

@media (max-width: 560px) {
  .container { width: min(100% - 28px, 1120px); }
  .hero { padding-top: 66px; }
  .section { padding: 72px 0; }
  .brand small { display: none; }
  .hero-actions .button, .button-row .button { width: 100%; }
  .research-list article { grid-template-columns: 44px 1fr; }
  .footer-wrap { flex-direction: column; }
}