:root {
  --bg: #ffffff;
  --muted-bg: #f6f7f8;
  --text: #33383f;
  --muted: #68717c;
  --heading: #20242a;
  --accent: #b83f45;
  --accent-dark: #943137;
  --border: #dfe3e8;
  --card: #ffffff;
  --shadow: 0 18px 50px rgba(30, 35, 45, 0.08);
  --radius: 18px;
  --max-width: 1120px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  font-size: 17px;
  line-height: 1.7;
}

a { color: var(--accent); text-decoration: none; }
a:hover { color: var(--accent-dark); text-decoration: underline; }

.skip-link {
  position: absolute;
  left: -999px;
  top: 0;
  background: var(--heading);
  color: #fff;
  padding: .5rem .75rem;
  z-index: 1000;
}
.skip-link:focus { left: .75rem; top: .75rem; }

.container {
  width: min(100% - 2rem, var(--max-width));
  margin-inline: auto;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 10;
  background: rgba(255, 255, 255, .94);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
}
.nav-wrap {
  width: min(100% - 2rem, var(--max-width));
  margin-inline: auto;
  min-height: 68px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}
.brand {
  color: var(--heading);
  font-weight: 750;
  letter-spacing: -.02em;
  white-space: nowrap;
}
.site-nav {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: .95rem;
  font-size: .93rem;
  flex-wrap: wrap;
}
.site-nav a { color: var(--text); }
.site-nav a:hover { color: var(--accent); }
.nav-pill {
  border: 1px solid var(--border);
  border-radius: 999px;
  padding: .35rem .75rem;
}

.hero {
  padding: 6rem 0 4rem;
  background: radial-gradient(circle at top left, #fff0f1 0, transparent 34%), linear-gradient(180deg, #fff, #f9fafb);
}
.hero-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 360px;
  gap: 2rem;
  align-items: stretch;
}
.eyebrow {
  margin: 0 0 .75rem;
  color: var(--accent);
  font-weight: 700;
  letter-spacing: .08em;
  text-transform: uppercase;
  font-size: .78rem;
}
h1, h2, h3 {
  color: var(--heading);
  line-height: 1.15;
  letter-spacing: -.03em;
}
h1 { font-size: clamp(2.5rem, 7vw, 5rem); margin: 0 0 1rem; }
h2 { font-size: clamp(1.7rem, 3.5vw, 2.4rem); margin: 0 0 1rem; }
h3 { font-size: 1.18rem; margin: 1.35rem 0 .45rem; }
.lead {
  font-size: clamp(1.08rem, 2vw, 1.35rem);
  color: var(--muted);
  max-width: 760px;
  margin-bottom: 2rem;
}
.hero-actions { display: flex; flex-wrap: wrap; gap: .75rem; }
.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  padding: .55rem 1rem;
  border: 1px solid var(--border);
  border-radius: 999px;
  color: var(--heading);
  font-weight: 700;
  background: #fff;
}
.button:hover { text-decoration: none; border-color: var(--accent); }
.button.primary { background: var(--accent); border-color: var(--accent); color: #fff; }
.button.primary:hover { background: var(--accent-dark); color: #fff; }

.contact-card,
.timeline-card,
.card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}
.contact-card { padding: 1.5rem; }
.contact-card h2 { font-size: 1.3rem; }
.small { color: var(--muted); font-size: .92rem; }

.section { padding: 4.5rem 0; }
.section.muted { background: var(--muted-bg); }
.two-columns {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 380px;
  gap: 2rem;
}
.timeline-card { padding: 1.5rem; }
.clean-list { list-style: none; padding-left: 0; margin: 0; }
.clean-list li { border-top: 1px solid var(--border); padding: .7rem 0; }
.clean-list li:first-child { border-top: 0; }
.link-list li { padding: .55rem 0; }
.section-heading { max-width: 760px; margin-bottom: 2rem; }
.section-heading p { color: var(--muted); }
.cards {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1rem;
}
.card { padding: 1.35rem; }
.card h3 { margin-top: 0; }
.publication-list {
  padding-left: 1.2rem;
  max-width: 940px;
}
.publication-list li { margin-bottom: 1rem; padding-left: .4rem; }

.site-footer {
  border-top: 1px solid var(--border);
  padding: 2rem 0;
  color: var(--muted);
  background: #fff;
}
.footer-grid {
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  flex-wrap: wrap;
}
.footer-grid p { margin: 0; }

@media (max-width: 900px) {
  .nav-wrap { align-items: flex-start; flex-direction: column; padding: .85rem 0; }
  .site-nav { justify-content: flex-start; gap: .7rem; }
  .hero { padding-top: 3.5rem; }
  .hero-grid, .two-columns { grid-template-columns: 1fr; }
  .cards { grid-template-columns: 1fr; }
}

@media (max-width: 560px) {
  body { font-size: 16px; }
  .container, .nav-wrap { width: min(100% - 1.25rem, var(--max-width)); }
  .site-nav a:not(.nav-pill) { padding: .15rem 0; }
  .hero-actions .button { width: 100%; }
  .section { padding: 3rem 0; }
  .contact-card, .timeline-card, .card { border-radius: 14px; padding: 1rem; }
}