:root {
  --blue-dark: #1f3f5b;
  --blue: #3b82c4;
  --teal: #2aa6a1;
  --bg: #f5f7fa;
  --text: #1f2933;
  --muted: #5f6b7a;
  --card: #ffffff;
}

body {
  margin: 0;
  font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
}

.site-header {
  background: var(--blue-dark);
  color: white;
  padding: 1rem 7vw;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.logo {
  color: white;
  font-weight: 700;
  text-decoration: none;
  font-size: 1.25rem;
}

nav a {
  color: white;
  text-decoration: none;
  margin-left: 1.25rem;
}

.hero {
  padding: 6rem 7vw;
  background: linear-gradient(135deg, var(--blue-dark), var(--teal));
  color: white;
}

.hero h1 {
  font-size: clamp(2.4rem, 5vw, 4.8rem);
  line-height: 1.05;
  margin: 0 0 1rem;
}

.hero p {
  max-width: 760px;
  font-size: 1.25rem;
}

.section {
  padding: 4rem 7vw;
}

.section img {
  display: block;
  width: min(100%, 640px);
  height: auto;
  margin: 1rem 0 0.5rem;
  border-radius: 8px;
}

.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 1.5rem;
}

.card {
  background: var(--card);
  border-radius: 18px;
  padding: 1.5rem;
  box-shadow: 0 10px 30px rgba(31, 63, 91, 0.08);
}

.card h2,
.card h3 {
  color: var(--blue-dark);
}

.card .card-image {
  width: 100%;
  height: clamp(160px, 14vw, 230px);
  aspect-ratio: 16 / 9;
  object-fit: cover;
  border-radius: 8px;
  margin: 0 0 1rem;
}

.button {
  display: inline-block;
  background: var(--teal);
  color: white;
  padding: 0.75rem 1rem;
  border-radius: 999px;
  text-decoration: none;
  font-weight: 600;
}

.section-intro,
.source-note {
  color: var(--muted);
}

.publications-page {
  max-width: 1100px;
}

.publications-list {
  margin-top: 2rem;
}

.publications-list h2 {
  margin: 2rem 0 0.75rem;
  color: var(--blue-dark);
  font-size: 1.35rem;
}

.publications-list ul {
  margin: 0;
  padding: 0;
  list-style: none;
}

.publications-list li {
  margin-bottom: 0.75rem;
  padding: 1rem 1.25rem;
  background: var(--card);
  border-left: 4px solid var(--teal);
  border-radius: 8px;
  box-shadow: 0 6px 18px rgba(31, 63, 91, 0.06);
}

.publications-list a {
  color: var(--blue-dark);
  font-weight: 600;
}

.people-page {
  max-width: 1180px;
}

.people-section {
  margin-top: 2.5rem;
}

.people-section h2 {
  color: var(--blue-dark);
  font-size: 1.9rem;
  margin: 0 0 1rem;
}

.people-section h3 {
  color: var(--blue-dark);
  font-size: 1.2rem;
  margin: 1.5rem 0 1rem;
}

.people-list {
  display: grid;
  gap: 0;
}

.person-profile {
  display: flex;
  gap: 1rem;
  align-items: start;
  border-bottom: 1px solid rgba(31, 63, 91, 0.14);
  padding: 1rem 0;
}

.featured-person {
  gap: 1.15rem;
}

.compact-person {
  gap: 0.9rem;
}

.person-profile img {
  flex: 0 0 auto;
  width: 142px;
  max-width: 142px;
  height: auto;
  object-fit: cover;
  border-radius: 3px;
  margin: 0;
}

.featured-person img {
  width: 150px;
  max-width: 150px;
}

.compact-person img {
  width: 105px;
  max-width: 105px;
}

.person-profile h3,
.person-profile h4 {
  margin: 0 0 0.4rem;
  color: var(--blue-dark);
}

.featured-person h3 {
  margin-bottom: 0.2rem;
}

.featured-person .person-role,
.featured-person .person-meta {
  line-height: 1.25;
  margin-bottom: 0.2rem;
}

.person-profile a {
  color: var(--blue-dark);
  font-weight: 700;
}

.person-profile p {
  margin: 0 0 0.75rem;
}

.person-role,
.person-meta {
  color: var(--muted);
}

.people-bullets {
  margin: 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 0.65rem;
}

.people-bullets li {
  border-left: 4px solid var(--teal);
  padding: 0.2rem 0 0.2rem 0.85rem;
}

.alumni-columns {
  display: grid;
  grid-template-columns: minmax(260px, 0.9fr) minmax(320px, 1.4fr);
  gap: 1.5rem;
  margin-top: 1.5rem;
}

.site-footer {
  padding: 2rem 7vw;
  background: var(--blue-dark);
  color: white;
}

@media (max-width: 720px) {
  .site-header {
    align-items: flex-start;
    flex-direction: column;
    gap: 0.75rem;
  }

  nav a {
    margin: 0 1rem 0 0;
  }

  .person-profile,
  .featured-person,
  .compact-person {
    gap: 0.75rem;
  }

  .person-profile img {
    width: 96px;
    max-width: 96px;
  }

  .alumni-columns {
    grid-template-columns: 1fr;
  }
}