:root {
  --max-width: 720px;
  --text: #1a1a1a;
  --muted: #666;
  --subtle: #999;
  --link: #800000;
  --rule: #ddd;
  --bg: #fdfdfd;
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
}

body {
  font-family: Georgia, "Iowan Old Style", "Times New Roman", serif;
  font-size: 17px;
  line-height: 1.6;
  color: var(--text);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
}

main {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 64px 24px 120px;
}

a {
  color: var(--link);
  text-decoration: none;
}

a:hover {
  text-decoration: underline;
}

.page-header {
  margin: 0 0 28px;
}

.page-header h1 {
  font-size: 2.4rem;
  font-weight: normal;
  margin: 0;
  letter-spacing: 0.3px;
}

.affiliation {
  margin: 0 0 6px;
  color: var(--muted);
  line-height: 1.55;
}

.contact {
  margin: 14px 0 0;
  font-size: 0.95rem;
}

.intro {
  display: flex;
  gap: 36px;
  align-items: center;
}

.intro-text {
  flex: 2;
}

.intro-text .bio {
  margin: 24px 0 0;
}

.intro-photo {
  flex: 1;
  max-width: 240px;
}

.intro-photo img {
  width: 100%;
  height: auto;
  display: block;
  border-radius: 2px;
}

section h2 {
  font-size: 1.3rem;
  font-weight: normal;
  font-style: italic;
  margin: 56px 0 20px;
  padding-bottom: 6px;
  border-bottom: 1px solid var(--rule);
}

.paper, .course {
  margin: 0 0 22px;
}

.paper h3,
.course-title {
  font-size: 1.05rem;
  font-weight: bold;
  margin: 0 0 4px;
}

.paper-meta {
  margin: 2px 0 0;
  color: var(--muted);
  font-size: 0.95rem;
}

.paper-authors {
  margin: 2px 0 0;
  color: var(--subtle);
  font-size: 0.9rem;
}

.course-meta {
  margin: 2px 0 0;
  color: var(--muted);
  font-size: 0.95rem;
  font-style: italic;
}

.course-links {
  margin: 4px 0 0;
  font-size: 0.95rem;
}

@media (max-width: 600px) {
  main {
    padding: 40px 20px 80px;
  }

  .page-header h1 {
    font-size: 2rem;
  }

  .intro {
    flex-direction: column;
    gap: 24px;
  }

  .intro-photo {
    max-width: 220px;
  }
}