:root {
  --ink: #17233a;
  --muted: #5e6978;
  --paper: #fbfcfe;
  --tint: #edf4f8;
  --blue: #186c8d;
  --blue-dark: #0b4965;
  --line: #d8e1e8;
  --max: 1100px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; color: var(--ink); background: var(--paper); font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif; font-size: 1rem; line-height: 1.7; }
a { color: var(--blue-dark); text-decoration-thickness: 1px; text-underline-offset: 3px; }
a:hover { color: var(--blue); }
.wrap { width: min(calc(100% - 3rem), var(--max)); margin: 0 auto; }
.narrow { width: min(calc(100% - 3rem), 780px); }
.skip-link { position: absolute; left: -999px; top: 0; background: white; padding: .5rem 1rem; z-index: 20; }
.skip-link:focus { left: 1rem; top: 1rem; }
.site-header { position: sticky; top: 0; z-index: 10; background: rgba(251,252,254,.96); border-bottom: 1px solid var(--line); backdrop-filter: blur(12px); }
.nav-wrap { min-height: 4.5rem; display: flex; align-items: center; justify-content: space-between; gap: 1rem; }
.brand { color: var(--ink); font-size: 1.1rem; font-weight: 750; letter-spacing: -.02em; text-decoration: none; white-space: nowrap; }
.brand span { color: var(--muted); font-weight: 500; }
nav { display: flex; gap: 1.25rem; align-items: center; }
nav a { color: var(--muted); font-size: .9rem; font-weight: 650; text-decoration: none; }
nav a:hover { color: var(--blue-dark); }
.menu-button { display: none; border: 1px solid var(--line); background: white; color: var(--ink); padding: .4rem .7rem; border-radius: .35rem; font: inherit; }
.hero { padding: 7rem 0 6rem; background: linear-gradient(150deg, #f7fbfd 0%, #e9f3f7 100%); }
.hero-grid { display: grid; grid-template-columns: minmax(0, 1.5fr) minmax(250px, .75fr); gap: 4.5rem; align-items: center; }
.eyebrow, .card-label { margin: 0 0 .7rem; color: var(--blue); font-size: .75rem; line-height: 1.4; letter-spacing: .13em; text-transform: uppercase; font-weight: 750; }
h1, h2, h3 { color: var(--ink); line-height: 1.16; letter-spacing: -.035em; }
h1 { max-width: 760px; margin: 0; font-size: clamp(2.6rem, 6vw, 5rem); }
h2 { margin: 0 0 1.35rem; font-size: clamp(2rem, 3.6vw, 3rem); }
h3 { margin: .1rem 0 .8rem; font-size: 1.3rem; }
.lead { max-width: 760px; margin: 1.75rem 0 0; font-size: 1.15rem; color: #38495d; }
.hero-actions { display: flex; flex-wrap: wrap; gap: 1rem; align-items: center; margin-top: 2rem; }
.button { display: inline-block; padding: .75rem 1rem; background: var(--blue-dark); color: white; border-radius: .3rem; text-decoration: none; font-weight: 700; }
.button:hover { background: var(--blue); color: white; }
.text-link { font-weight: 700; }
.focus-card { padding: 1.6rem 1.8rem; background: white; border: 1px solid var(--line); border-radius: .6rem; box-shadow: 0 18px 45px rgba(11,73,101,.08); }
.focus-card ul { margin: .85rem 0 0; padding-left: 1.1rem; }
.focus-card li { margin: .4rem 0; }
.section { padding: 5.5rem 0; }
.section-tint { background: var(--tint); }
.research-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 1.2rem; }
.research-card { padding: 1.8rem; background: white; border: 1px solid var(--line); border-radius: .5rem; }
.research-card p:last-child { margin-bottom: 0; }
.publication-group { padding: 1.25rem 0; border-top: 1px solid var(--line); }
.publication-group h3 { font-size: 1.1rem; letter-spacing: -.015em; }
.publications-list { margin: 0; padding-left: 1.35rem; }
.publications-list li { padding-left: .25rem; margin: .8rem 0; }
.resource-block { margin-top: 1.5rem; padding: 1.25rem 1.4rem; background: white; border-left: 3px solid var(--blue); }
.resource-block p:last-child, .resource-block ul:last-child { margin-bottom: 0; }
.muted { color: var(--muted); font-size: .93rem; }
.timeline { margin: 0; }
.timeline div { padding: 1rem 0; border-top: 1px solid var(--line); }
.timeline dt { font-weight: 750; }
.timeline dd { margin: .15rem 0 0; color: var(--muted); }
.contact-section { background: var(--ink); color: #e9f2f7; }
.contact-section h2 { color: white; }
.contact-section .eyebrow { color: #9fcadd; }
.contact-section a { color: #c5e8f5; }
.site-footer { padding: 1.4rem 0; background: #101b2d; color: #afc0ca; font-size: .86rem; }
.site-footer .wrap { display: flex; justify-content: space-between; gap: 1rem; }
.site-footer a { color: #d6edf7; }

@media (max-width: 760px) {
  .nav-wrap { flex-wrap: wrap; padding: .8rem 0; }
  .menu-button { display: block; }
  nav { display: none; width: 100%; padding: .5rem 0 .25rem; flex-wrap: wrap; gap: .8rem 1rem; }
  nav.open { display: flex; }
  .hero { padding: 4.5rem 0; }
  .hero-grid, .research-grid { grid-template-columns: 1fr; gap: 2rem; }
  .section { padding: 4rem 0; }
}