:root {
  --paper: #f7f6f1;
  --ink: #171717;
  --muted: #66635e;
  --line: #d8d5cd;
  --red: #e1372f;
  --blue: #2e5faa;
  --yellow: #f4ca31;
  --serif: "Iowan Old Style", "Palatino Linotype", Palatino, Georgia, serif;
  --sans: Arial, Helvetica, sans-serif;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  color: var(--ink);
  background: var(--paper);
  font-family: var(--sans);
  font-size: 16px;
  line-height: 1.58;
  -webkit-font-smoothing: antialiased;
}

a { color: inherit; }

.site-shell {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

.color-band {
  height: 58px;
  display: grid;
  grid-template-columns: 15% 55% 9% 21%;
}

.color-band span:nth-child(1) { background: var(--red); border-right: 5px solid #111; }
.color-band span:nth-child(2) { background: var(--paper); border-right: 5px solid #111; }
.color-band span:nth-child(3) { background: var(--yellow); border-right: 5px solid #111; }
.color-band span:nth-child(4) { background: var(--blue); }

.site-header,
.main,
.site-footer-inner {
  width: min(1180px, calc(100% - 64px));
  margin-inline: auto;
}

.site-header {
  min-height: 82px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 32px;
  border-bottom: 1px solid var(--line);
}

.brand {
  font-family: var(--serif);
  font-size: 24px;
  line-height: 1;
  text-decoration: none;
  letter-spacing: -.3px;
  white-space: nowrap;
}

.nav-toggle {
  display: none;
  border: 1px solid var(--line);
  background: transparent;
  padding: 8px 11px;
  font: 600 12px/1 var(--sans);
  letter-spacing: .08em;
  text-transform: uppercase;
}

.site-nav {
  display: flex;
  align-items: center;
  gap: 30px;
}

.site-nav a {
  position: relative;
  padding: 30px 0 25px;
  text-decoration: none;
  font-family: var(--serif);
  font-size: 15px;
  line-height: 1;
}

.site-nav a:hover::after,
.site-nav a[aria-current="page"]::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: 18px;
  height: 1px;
  background: currentColor;
}

.main {
  flex: 1;
  padding-block: 96px 130px;
}

h1, h2, h3 {
  margin-top: 0;
  font-family: var(--serif);
  font-weight: 400;
}

h1 {
  margin-bottom: 56px;
  font-size: clamp(36px, 4.5vw, 52px);
  line-height: 1.02;
  letter-spacing: -1.4px;
}

h2 {
  font-size: clamp(30px, 4vw, 46px);
  line-height: 1.08;
  letter-spacing: -.7px;
}

h3 {
  font-size: 24px;
  line-height: 1.25;
}

.eyebrow {
  margin: 0 0 14px;
  color: var(--muted);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: .16em;
  text-transform: uppercase;
}

.section-rule {
  border: 0;
  border-top: 1px solid var(--line);
  margin: 66px 0;
}

.hero {
  display: grid;
  grid-template-columns: minmax(0, 1.45fr) minmax(260px, .75fr);
  gap: clamp(54px, 8vw, 110px);
  align-items: start;
}

.hero-copy {
  max-width: 720px;
  font-family: var(--serif);
  font-size: clamp(20px, 2vw, 28px);
  line-height: 1.52;
}

.hero-copy p { margin: 0 0 24px; }

.portrait {
  width: 100%;
  aspect-ratio: 4 / 5;
  object-fit: cover;
  object-position: 50% 46%;
  display: block;
}

.profile-meta {
  margin-top: 32px;
  border-top: 1px solid var(--line);
}

.meta-row {
  display: grid;
  grid-template-columns: 110px 1fr;
  gap: 18px;
  padding: 13px 0;
  border-bottom: 1px solid var(--line);
  font-size: 13px;
  line-height: 1.45;
}

.meta-row strong { font-size: 12px; }

.action-links {
  display: flex;
  gap: 28px;
  margin-top: 25px;
  font-size: 13px;
  font-weight: 700;
}

.action-links a { text-underline-offset: 4px; }

.numbered-section {
  display: grid;
  grid-template-columns: 58px 1fr;
  gap: 28px;
  margin-top: 88px;
  padding-top: 58px;
  border-top: 1px solid var(--line);
}

.section-number {
  padding-top: 8px;
  color: var(--muted);
  font-family: var(--serif);
  font-size: 13px;
  letter-spacing: .1em;
}

.teaching-grid,
.two-col-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  column-gap: 58px;
}

.teaching-item,
.list-item {
  padding: 23px 0 28px;
  border-top: 1px solid var(--line);
}

.teaching-item h3,
.list-item h3 {
  margin: 0 0 7px;
  font-size: 21px;
}

.item-meta,
.paper-status {
  margin: 0;
  color: var(--muted);
  font-size: 12px;
  line-height: 1.55;
}

.research-intro {
  display: grid;
  grid-template-columns: minmax(260px, .8fr) minmax(300px, 1.2fr);
  gap: 70px;
  align-items: start;
}

.research-intro h2 { margin-bottom: 0; }

.research-intro p {
  margin: 0;
  font-family: var(--serif);
  font-size: 18px;
  line-height: 1.72;
}

.research-links,
.research-cards {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 36px;
  margin-top: 52px;
}

.research-link,
.research-card {
  position: relative;
  padding-top: 25px;
  border-top: 5px solid var(--red);
}

.research-link:nth-child(2),
.research-card:nth-child(2) { border-color: var(--blue); }
.research-link:nth-child(3),
.research-card:nth-child(3) { border-color: var(--yellow); }

.research-link {
  min-height: 132px;
  padding-right: 24px;
  font-family: var(--serif);
  font-size: 23px;
  line-height: 1.22;
  text-decoration: none;
}

.research-link::after {
  content: "↗";
  position: absolute;
  top: 21px;
  right: 0;
  font-family: var(--sans);
  font-size: 14px;
}

.research-link:hover { text-decoration: underline; text-underline-offset: 5px; }

.page-lede {
  max-width: 900px;
  margin-bottom: 44px;
}

.page-lede h2 {
  max-width: 820px;
  margin-bottom: 24px;
}

.page-lede p {
  max-width: 900px;
  margin: 0;
  font-family: var(--serif);
  font-size: 19px;
  line-height: 1.72;
}

.research-card h3 { margin-bottom: 16px; }
.research-card p { margin: 0; color: #403e3a; }

.collection-heading {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 22px;
  margin-bottom: 32px;
}

.collection-heading h2 { margin: 0; }

.collection-label {
  color: var(--muted);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: .14em;
  text-transform: uppercase;
}

.paper-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0 68px;
}

.paper-card {
  padding: 30px 0 34px;
  border-top: 1px solid var(--line);
}

.paper-card h3 {
  max-width: 520px;
  margin-bottom: 10px;
  font-size: 24px;
}

.paper-card p:last-child {
  max-width: 520px;
  margin: 18px 0 0;
  color: #403e3a;
}

.papers-section + .papers-section { margin-top: 82px; }

.contact-panel {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 40px;
  align-items: end;
  padding: 34px 0;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.contact-panel p { margin: 0 0 6px; }

.site-footer { margin-top: auto; }

.footer-band {
  height: 48px;
  display: grid;
  grid-template-columns: 23% 9% 1fr 14%;
}

.footer-band span:nth-child(1) { background: var(--blue); }
.footer-band span:nth-child(2) { background: var(--yellow); border-inline: 5px solid #111; }
.footer-band span:nth-child(3) { background: var(--paper); border-right: 5px solid #111; }
.footer-band span:nth-child(4) { background: var(--red); }

.site-footer-inner {
  min-height: 70px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  color: var(--muted);
  font-size: 12px;
}

@media (max-width: 820px) {
  .color-band { height: 34px; grid-template-columns: 18% 48% 10% 24%; }

  .site-header,
  .main,
  .site-footer-inner { width: min(100% - 36px, 680px); }

  .site-header { min-height: 76px; flex-wrap: wrap; padding: 20px 0; }
  .brand { font-size: 22px; }
  .nav-toggle { display: block; }

  .site-nav {
    display: none;
    width: 100%;
    align-items: flex-start;
    gap: 0;
    flex-direction: column;
    padding-top: 12px;
  }

  .site-nav.is-open { display: flex; }
  .site-nav a { width: 100%; padding: 13px 0; border-top: 1px solid var(--line); }
  .site-nav a:hover::after,
  .site-nav a[aria-current="page"]::after { display: none; }
  .site-nav a[aria-current="page"] { font-weight: 700; }

  .main { padding-block: 62px 92px; }
  h1 { margin-bottom: 42px; }

  .hero { grid-template-columns: 1fr; gap: 42px; }
  .hero-copy { font-size: 20px; }
  .portrait { width: min(100%, 380px); }

  .meta-row { grid-template-columns: 92px 1fr; }
  .numbered-section { grid-template-columns: 1fr; gap: 14px; margin-top: 66px; }
  .section-number { padding: 0; }

  .teaching-grid,
  .two-col-grid,
  .paper-grid,
  .research-intro,
  .research-links,
  .research-cards,
  .contact-panel { grid-template-columns: 1fr; }

  .research-intro { gap: 28px; }
  .research-links,
  .research-cards { gap: 34px; }
  .research-link { min-height: auto; }
  .paper-grid { gap: 0; }
  .contact-panel { align-items: start; }

  .footer-band { height: 30px; grid-template-columns: 25% 10% 1fr 18%; }
  .site-footer-inner { min-height: 76px; align-items: flex-start; flex-direction: column; justify-content: center; gap: 3px; }
}

@media print {
  .nav-toggle { display: none !important; }
  .site-nav { display: flex !important; }
}