:root {
  --bg: #f6f8fb;
  --surface: #ffffff;
  --surface-2: #eef3f7;
  --text: #18212b;
  --muted: #5b6978;
  --border: #d8e0e8;
  --accent: #173d67;
  --accent-2: #255f98;
  --shadow: 0 12px 36px rgba(24, 33, 43, 0.08);
  --max: 1120px;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
}
a { color: var(--accent); text-decoration: none; }
a:hover { color: var(--accent-2); }
.container { width: min(var(--max), calc(100% - 2rem)); margin: 0 auto; }
.site-header {
  position: sticky; top: 0; z-index: 20;
  background: rgba(246, 248, 251, 0.92);
  border-bottom: 1px solid rgba(216, 224, 232, 0.9);
  backdrop-filter: blur(10px);
}
.nav-wrap { display: flex; align-items: center; justify-content: space-between; gap: 1rem; min-height: 72px; }
.brand { font-weight: 800; color: var(--text); letter-spacing: 0.01em; }
.nav { display: flex; gap: 1rem; flex-wrap: wrap; justify-content: flex-end; }
.nav a { color: var(--muted); font-weight: 600; }
.nav a.active, .nav a:hover { color: var(--accent); }
.hero {
  padding: 5rem 0 4rem;
  background: linear-gradient(180deg, rgba(238,243,247,.8), rgba(246,248,251,0));
}
.hero-grid, .grid-2, .grid-3 { display: grid; gap: 1.5rem; }
.hero-grid { grid-template-columns: 1.6fr .95fr; align-items: start; }
.grid-2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.grid-3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.eyebrow, .kicker {
  display: inline-block; text-transform: uppercase; letter-spacing: .12em; font-size: .77rem; font-weight: 800; color: var(--accent);
}
h1, h2, h3 { margin: 0 0 .75rem; line-height: 1.15; }
h1 { font-size: clamp(2.4rem, 5vw, 4.3rem); max-width: 14ch; }
h2 { font-size: clamp(1.7rem, 3vw, 2.4rem); }
h3 { font-size: 1.2rem; }
.lead { font-size: 1.14rem; color: var(--muted); max-width: 72ch; }
.button-row { display: flex; flex-wrap: wrap; gap: .8rem; margin-top: 1.5rem; }
.button {
  display: inline-flex; align-items: center; justify-content: center; padding: .82rem 1.1rem; border-radius: 999px; font-weight: 700; border: 1px solid transparent;
}
.button.primary { background: var(--accent); color: #fff; }
.button.primary:hover { background: var(--accent-2); color: #fff; }
.button.secondary { background: var(--surface); border-color: var(--border); color: var(--text); }
.panel, .card, .info-card, .pub-card, .callout, .note {
  background: var(--surface); border: 1px solid var(--border); border-radius: 22px; box-shadow: var(--shadow);
}
.panel, .card, .info-card, .callout, .note, .pub-card { padding: 1.35rem; }
.panel .stat + .stat { margin-top: 1rem; padding-top: 1rem; border-top: 1px solid var(--border); }
.label { color: var(--muted); font-size: .92rem; }
.value { font-weight: 700; margin-top: .2rem; }
.section { padding: 2rem 0 4rem; }
.page-head { padding: 3rem 0 1rem; }
.cards { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 1.25rem; }
.tag-row { display: flex; gap: .5rem; flex-wrap: wrap; margin-top: .8rem; }
.tag { border: 1px solid var(--border); background: var(--surface-2); border-radius: 999px; padding: .3rem .62rem; font-size: .84rem; color: var(--muted); }
.filters { display: flex; gap: 1rem; flex-wrap: wrap; margin-bottom: 1.3rem; }
.filters input, .filters select {
  border-radius: 14px; border: 1px solid var(--border); background: var(--surface); padding: .88rem 1rem; font-size: 1rem; color: var(--text);
}
.filters input { flex: 1 1 340px; }
#featuredPublications, #allPublications { display: grid; gap: 1rem; }
.pub-meta { display: flex; justify-content: space-between; gap: 1rem; flex-wrap: wrap; color: var(--muted); font-size: .94rem; }
.pub-links { display: flex; gap: 1rem; flex-wrap: wrap; margin-top: 1rem; font-weight: 700; }
.pub-links a { padding: .35rem 0; }
.small { font-size: .93rem; color: var(--muted); }
.list-clean { list-style: none; padding: 0; margin: 0; }
.list-clean li + li { margin-top: .9rem; padding-top: .9rem; border-top: 1px solid var(--border); }
.timeline-item + .timeline-item { margin-top: .9rem; padding-top: .9rem; border-top: 1px solid var(--border); }
.callout { background: linear-gradient(180deg, #173d67, #214f80); color: white; }
.callout a { color: white; text-decoration: underline; }
.footer { padding: 2rem 0 3rem; color: var(--muted); }
.footer-grid { display: grid; grid-template-columns: 2fr 1fr 1fr; gap: 1.5rem; }
code { background: var(--surface-2); padding: .12rem .34rem; border-radius: 6px; }
@media (max-width: 920px) {
  .hero-grid, .grid-2, .grid-3, .cards, .footer-grid { grid-template-columns: 1fr; }
  .nav-wrap { align-items: flex-start; padding: .8rem 0; }
  .nav { gap: .75rem; }
}
@media (max-width: 640px) {
  h1 { max-width: none; }
  .button-row { flex-direction: column; align-items: stretch; }
  .button { width: 100%; }
}