:root {
  --ink: #172336;
  --ink-soft: #425066;
  --paper: #f5f0e6;
  --paper-deep: #e9dfcd;
  --surface: #fffdf8;
  --gold: #a6813d;
  --gold-dark: #76591f;
  --line: #d8cfbd;
  --navy: #12243d;
  --focus: #1f63a9;
  --serif: "Source Serif 4", "Iowan Old Style", "Palatino Linotype", Palatino, Georgia, serif;
  --sans: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  --shadow: 0 18px 50px rgb(23 35 54 / 9%);
  --radius: 4px;
  --max: 1180px;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  background: var(--surface);
  color: var(--ink);
  font-family: var(--sans);
  font-size: 17px;
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}

a { color: inherit; text-decoration-thickness: 1px; text-underline-offset: 0.2em; }
a:hover { color: var(--gold-dark); }
a:focus-visible, button:focus-visible, input:focus-visible, textarea:focus-visible {
  outline: 3px solid color-mix(in srgb, var(--focus) 65%, transparent);
  outline-offset: 3px;
}

img { max-width: 100%; height: auto; }

.skip-link {
  position: absolute;
  z-index: 100;
  top: -80px;
  left: 1rem;
  padding: 0.7rem 1rem;
  background: var(--navy);
  color: white;
}
.skip-link:focus { top: 1rem; }

.site-header {
  position: relative;
  z-index: 20;
  border-bottom: 1px solid var(--line);
  background: rgb(255 253 248 / 96%);
}

.nav-shell {
  width: min(calc(100% - 2.5rem), var(--max));
  min-height: 88px;
  margin-inline: auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 2rem;
}

.brand { text-decoration: none; display: grid; gap: 0.05rem; }
.brand strong { font-family: var(--serif); font-size: 1.25rem; font-weight: 600; letter-spacing: 0.01em; }
.brand span { color: var(--ink-soft); font-size: 0.72rem; letter-spacing: 0.13em; text-transform: uppercase; }

.site-nav { display: flex; align-items: center; gap: 1.7rem; }
.site-nav a { font-size: 0.85rem; font-weight: 650; letter-spacing: 0.02em; text-decoration: none; }
.site-nav a[aria-current="page"] { color: var(--gold-dark); }
.menu-button { display: none; border: 0; background: transparent; color: var(--ink); font: inherit; font-weight: 650; padding: 0.65rem; }

main { overflow: hidden; }
.shell { width: min(calc(100% - 2.5rem), var(--max)); margin-inline: auto; }
.narrow { width: min(calc(100% - 2.5rem), 780px); margin-inline: auto; }
.section { padding-block: clamp(4.5rem, 8vw, 8rem); }
.section-compact { padding-block: clamp(3rem, 6vw, 5.5rem); }
.paper { background: var(--paper); }
.navy { background: var(--navy); color: #f8f4eb; }

.eyebrow {
  margin: 0 0 1rem;
  color: var(--gold-dark);
  font-size: 0.74rem;
  font-weight: 750;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}
.navy .eyebrow { color: #d6bd83; }

h1, h2, h3 {
  font-family: var(--serif);
  font-weight: 550;
  line-height: 1.12;
  text-wrap: balance;
}
h1 { margin: 0; font-size: clamp(2.85rem, 7vw, 6.8rem); letter-spacing: -0.035em; }
h2 { margin: 0 0 1.3rem; font-size: clamp(2.1rem, 4.2vw, 4rem); letter-spacing: -0.025em; }
h3 { margin: 0 0 0.65rem; font-size: clamp(1.35rem, 2vw, 1.75rem); }
p { margin: 0 0 1.2rem; }
.lede { max-width: 760px; color: var(--ink-soft); font-family: var(--serif); font-size: clamp(1.22rem, 2.1vw, 1.55rem); line-height: 1.55; }
.navy .lede, .navy .muted { color: #d5dce5; }
.muted { color: var(--ink-soft); }
.kicker { font-family: var(--serif); font-size: 1.18rem; }
.display-italic { font-style: italic; }

.hero { position: relative; min-height: 660px; display: grid; align-items: center; background: var(--paper); }
.hero::after {
  content: "";
  position: absolute;
  inset: 0 0 0 54%;
  opacity: 0.5;
  background-image:
    linear-gradient(30deg, transparent 48%, rgb(166 129 61 / 15%) 49%, rgb(166 129 61 / 15%) 51%, transparent 52%),
    linear-gradient(150deg, transparent 48%, rgb(18 36 61 / 9%) 49%, rgb(18 36 61 / 9%) 51%, transparent 52%);
  background-size: 76px 132px;
  mask-image: linear-gradient(to right, transparent, black 20%);
}
.hero-grid { position: relative; z-index: 1; display: grid; grid-template-columns: minmax(0, 1.5fr) minmax(260px, 0.7fr); gap: clamp(3rem, 8vw, 8rem); align-items: end; padding-block: 6rem; }
.hero h1 span { display: block; color: var(--gold-dark); font-style: italic; font-size: 0.48em; letter-spacing: 0; margin-top: 0.25em; }
.hero-note { border-left: 1px solid var(--gold); padding-left: 1.5rem; max-width: 330px; }
.hero-note p:last-child { margin-bottom: 0; }
.actions { display: flex; flex-wrap: wrap; gap: 0.8rem; margin-top: 2rem; }
.button {
  min-height: 46px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.72rem 1.1rem;
  border: 1px solid var(--navy);
  border-radius: var(--radius);
  background: var(--navy);
  color: white;
  font-size: 0.83rem;
  font-weight: 750;
  letter-spacing: 0.025em;
  text-decoration: none;
}
.button:hover { background: var(--gold-dark); border-color: var(--gold-dark); color: white; }
.button.secondary { background: transparent; color: var(--navy); }
.button.secondary:hover { background: var(--paper-deep); color: var(--navy); }
.navy .button { background: #f8f4eb; border-color: #f8f4eb; color: var(--navy); }

.split { display: grid; grid-template-columns: minmax(0, 0.8fr) minmax(0, 1.2fr); gap: clamp(3rem, 8vw, 8rem); align-items: start; }
.research-feature { display: grid; grid-template-columns: 1fr 2fr; gap: clamp(2rem, 6vw, 6rem); }
.research-feature .meta { border-top: 1px solid var(--line); padding-top: 1.25rem; }
.research-feature .meta dt { color: var(--ink-soft); font-size: 0.74rem; font-weight: 750; letter-spacing: 0.1em; text-transform: uppercase; }
.research-feature .meta dd { margin: 0 0 1.1rem; }
.research-title { max-width: 860px; font-family: var(--serif); font-size: clamp(1.7rem, 3.3vw, 3rem); line-height: 1.28; }

.link-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1rem; }
.link-card { min-height: 220px; display: flex; flex-direction: column; justify-content: space-between; padding: 1.7rem; border: 1px solid var(--line); background: var(--surface); text-decoration: none; }
.link-card:hover { border-color: var(--gold); box-shadow: var(--shadow); color: var(--ink); transform: translateY(-2px); }
.link-card .number { color: var(--gold-dark); font-family: var(--serif); font-style: italic; }
.link-card span:last-child { font-size: 0.84rem; font-weight: 700; }

.page-hero { padding-block: clamp(4.5rem, 8vw, 8rem); background: var(--paper); border-bottom: 1px solid var(--line); }
.page-hero h1 { max-width: 900px; font-size: clamp(3rem, 6vw, 5.7rem); }
.page-hero .lede { margin-top: 1.5rem; }

.tags { display: flex; flex-wrap: wrap; gap: 0.55rem; }
.tag { padding: 0.35rem 0.7rem; border: 1px solid var(--line); border-radius: 999px; background: var(--surface); font-size: 0.78rem; font-weight: 650; }
.navy .tag { border-color: #657286; background: transparent; }

.publication-group { display: grid; grid-template-columns: 220px 1fr; gap: 2.5rem; padding-block: 2rem; border-top: 1px solid var(--line); }
.publication-group:last-child { border-bottom: 1px solid var(--line); }
.publication-group h3 { font-family: var(--sans); font-size: 0.78rem; font-weight: 750; letter-spacing: 0.12em; text-transform: uppercase; }
.citation { margin-bottom: 1.8rem; padding-left: 1.2rem; border-left: 2px solid var(--gold); }
.citation:last-child { margin-bottom: 0; }
.status { color: var(--gold-dark); font-size: 0.74rem; font-weight: 750; letter-spacing: 0.1em; text-transform: uppercase; }

.institution { display: grid; grid-template-columns: 0.7fr 1.3fr; gap: 3rem; padding-block: 2.2rem; border-top: 1px solid var(--line); }
.course-list { list-style: none; margin: 0; padding: 0; }
.course-list li { display: flex; justify-content: space-between; gap: 1.5rem; padding: 0.75rem 0; border-bottom: 1px solid color-mix(in srgb, var(--line) 70%, transparent); }
.course-list time { flex: 0 0 auto; color: var(--ink-soft); font-size: 0.82rem; }

.timeline { position: relative; margin-top: 2rem; }
.timeline::before { content: ""; position: absolute; top: 0.55rem; bottom: 0.55rem; left: 6.2rem; width: 1px; background: var(--line); }
.timeline-item { position: relative; display: grid; grid-template-columns: 5rem 1fr; gap: 2.5rem; padding-bottom: 2.5rem; }
.timeline-item::before { content: ""; position: absolute; left: 5.91rem; top: 0.38rem; width: 10px; height: 10px; border: 2px solid var(--gold); border-radius: 50%; background: var(--surface); }
.timeline-item time { color: var(--gold-dark); font-family: var(--serif); font-size: 1.08rem; }
.timeline-item p { margin: 0.35rem 0 0; color: var(--ink-soft); }

.columns { columns: 2 320px; column-gap: 4rem; }
.columns > * { break-inside: avoid; }

.contact-grid { display: grid; grid-template-columns: 0.75fr 1.25fr; gap: clamp(3rem, 8vw, 8rem); }
.contact-list { margin: 2rem 0; padding: 0; list-style: none; }
.contact-list li { margin-bottom: 1.2rem; }
.contact-list small { display: block; color: var(--ink-soft); font-size: 0.73rem; font-weight: 750; letter-spacing: 0.1em; text-transform: uppercase; }
.form-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 1rem; }
.field { display: grid; gap: 0.4rem; margin-bottom: 1rem; }
.field.full { grid-column: 1 / -1; }
label { font-size: 0.78rem; font-weight: 750; letter-spacing: 0.04em; }
input, textarea {
  width: 100%;
  padding: 0.85rem;
  border: 1px solid #b7ad9b;
  border-radius: var(--radius);
  background: white;
  color: var(--ink);
  font: inherit;
}
textarea { min-height: 180px; resize: vertical; }
.honeypot { position: absolute; left: -10000px; }
.form-status { min-height: 1.6em; margin-top: 0.75rem; font-size: 0.9rem; }

.site-footer { padding-block: 3rem; border-top: 1px solid var(--line); background: var(--surface); }
.footer-grid { display: flex; justify-content: space-between; gap: 2rem; align-items: end; }
.footer-grid p { margin: 0; color: var(--ink-soft); font-size: 0.8rem; }
.footer-nav { display: flex; flex-wrap: wrap; gap: 1rem; font-size: 0.8rem; }

@media (max-width: 840px) {
  .nav-shell { min-height: 74px; }
  .menu-button { display: inline-flex; }
  .site-nav { display: none; position: absolute; inset: 74px 0 auto; flex-direction: column; align-items: stretch; gap: 0; padding: 0.8rem 1.25rem 1.25rem; border-bottom: 1px solid var(--line); background: var(--surface); }
  .site-nav.open { display: flex; }
  .site-nav a { min-height: 46px; display: flex; align-items: center; border-bottom: 1px solid var(--line); }
  .hero { min-height: auto; }
  .hero::after { inset: 45% 0 0; mask-image: linear-gradient(to bottom, transparent, black); }
  .hero-grid, .split, .research-feature, .institution, .contact-grid { grid-template-columns: 1fr; }
  .hero-grid { gap: 3rem; padding-block: 4rem; }
  .hero-note { max-width: 560px; }
  .link-grid { grid-template-columns: 1fr; }
  .link-card { min-height: 150px; }
  .publication-group { grid-template-columns: 1fr; gap: 0.5rem; }
  .institution { gap: 1rem; }
}

@media (max-width: 560px) {
  body { font-size: 16px; }
  .shell, .narrow, .nav-shell { width: min(calc(100% - 2rem), var(--max)); }
  .brand span { display: none; }
  .form-grid { grid-template-columns: 1fr; }
  .field { grid-column: 1 / -1; }
  .course-list li { display: grid; gap: 0.15rem; }
  .timeline::before { left: 4.2rem; }
  .timeline-item { grid-template-columns: 3.3rem 1fr; gap: 1.8rem; }
  .timeline-item::before { left: 3.91rem; }
  .footer-grid { align-items: start; flex-direction: column; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { transition-duration: 0.01ms !important; animation-duration: 0.01ms !important; }
}