:root {
  --blue-dark: #0b5394;
  --blue: #1a73c1;
  --blue-light: #eaf3fc;
  --text: #1c2b39;
  --max-width: 800px;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: -apple-system, Segoe UI, Roboto, Helvetica, Arial, sans-serif;
  color: var(--text);
  background: #ffffff;
  line-height: 1.6;
}

header {
  background: var(--blue-light);
  text-align: center;
  padding: 3rem 1.5rem 2.5rem;
  border-bottom: 4px solid var(--blue);
}

header .logo {
  width: 96px;
  height: 96px;
}

header h1 {
  margin: 0.75rem 0 0.25rem;
  color: var(--blue-dark);
  font-size: 2.5rem;
}

header .tagline {
  margin: 0 0 1rem;
  color: var(--blue);
  font-size: 1.1rem;
}

header nav a {
  color: var(--blue-dark);
  font-weight: 600;
  text-decoration: none;
}

header nav a:hover {
  text-decoration: underline;
}

.toc {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 0.4rem;
  padding: 0.6rem 1rem;
  background: #ffffff;
  border-bottom: 1px solid var(--blue-light);
  font-size: 0.9rem;
}

.toc a {
  color: var(--blue);
  text-decoration: none;
}

.toc a:hover {
  text-decoration: underline;
}

main {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 2.5rem 1.5rem;
}

section {
  margin-bottom: 2.5rem;
}

h2 {
  color: var(--blue-dark);
  border-bottom: 2px solid var(--blue-light);
  padding-bottom: 0.4rem;
}

h3 {
  color: var(--blue);
  margin-top: 1.5rem;
}

a {
  color: var(--blue);
}

.pub-list {
  padding-left: 1.2rem;
}

.pub-list li {
  margin-bottom: 0.9rem;
}

.badge {
  display: block;
  width: fit-content;
  margin-top: 0.4rem;
  padding: 0.1rem 0.5rem;
  font-size: 0.8rem;
  color: #fff;
  background: var(--blue);
  border-radius: 4px;
}

footer {
  text-align: center;
  padding: 2rem 1.5rem;
  background: var(--blue-light);
  color: var(--blue-dark);
  font-size: 0.9rem;
}

.student {
  font-weight: 600;
}

.year {
  color: #6b7c8c;
}