:root {
  color: #202124;
  background: #fff;
  font-family: Georgia, "Times New Roman", serif;
  font-size: 18px;
  line-height: 1.55;
}

* { box-sizing: border-box; }

body { margin: 0; }

main {
  max-width: 760px;
  margin: 0 auto;
  padding: 5rem 2rem 3rem;
}

.site-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.5rem;
  margin-bottom: 4rem;
  padding-bottom: 1rem;
  border-bottom: 1px solid #dadce0;
}

.wordmark { color: inherit; font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif; font-size: 0.95rem; font-weight: 650; letter-spacing: -0.015em; text-decoration: none; }
.wordmark:hover { color: inherit; }

.profile-intro { align-items: center; display: flex; gap: 2rem; margin-bottom: 3.5rem; }

.portrait {
  width: 138px;
  height: 138px;
  border-radius: 50%;
  flex: none;
}

h1, h2, .subtitle, nav {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

h1 {
  font-size: 2rem;
  line-height: 1.2;
  letter-spacing: -0.03em;
  margin: 0;
}

h2 {
  font-size: 1.15rem;
  margin: 0 0 0.9rem;
}

p { margin: 0; }

.subtitle {
  display: block;
  color: #5f6368;
  margin: 0.3rem 0 0.8rem;
}

nav { display: flex; flex-wrap: wrap; font-size: 0.86rem; gap: 0.35rem 0.8rem; }
nav a { align-items: center; display: inline-flex; gap: 0.25rem; }
nav img { height: 0.9rem; width: 0.9rem; }
.primary-nav { font-weight: 600; }
.primary-nav a { color: #4d5156; padding: 0.2rem 0.4rem; text-decoration: none; }
.primary-nav a:hover { color: #174ea6; }
.primary-nav a[aria-current="page"] { background: #f1f3f4; color: #202124; }

a { color: #174ea6; text-decoration-thickness: 1px; text-underline-offset: 2px; }
a:hover { color: #0b57d0; }

section { margin: 0 0 2.8rem; }

.publications { margin: 0; padding-left: 1.2rem; }
.publications li { margin-bottom: 1.15rem; padding-left: 0.25rem; }
.posts { list-style: none; margin: 0; padding: 0; }
.posts li { border-top: 1px solid #dadce0; padding: 1rem 0; }
.posts li:last-child { border-bottom: 1px solid #dadce0; }
.posts time { color: #5f6368; font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif; font-size: 0.8rem; }
article > * { margin: 0 0 1.25rem; }
details { font-size: 0.9rem; margin-top: 0.35rem; }
summary { color: #174ea6; cursor: pointer; width: max-content; }
details p { margin-top: 0.35rem; }

dl { margin: 0; }
dt { font-weight: bold; }
dd { margin: 0 0 1rem; }

footer {
  border-top: 1px solid #dadce0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  font-size: 0.85rem;
  padding-top: 1.2rem;
}

@media (max-width: 540px) {
  main { padding: 3rem 1.4rem 2rem; }
  .site-header { align-items: flex-start; flex-direction: column; gap: 0.8rem; margin-bottom: 2.5rem; }
  .profile-intro { align-items: flex-start; gap: 1.25rem; margin-bottom: 2.5rem; }
  .portrait { width: 88px; height: 88px; }
  h1 { font-size: 1.55rem; }
}