:root {
  --ink: #1a1a1a;
  --muted: #6b6b6b;
  --rule: #e6e6e6;
  --link: #4e2a84; /* Northwestern purple */
  --link-hover: #6b3fa0;
  --maxw: 760px;
}

* { box-sizing: border-box; }

html { -webkit-text-size-adjust: 100%; }

body {
  margin: 0;
  font-family: Georgia, "Times New Roman", serif;
  color: var(--ink);
  line-height: 1.6;
  font-size: 18px;
  background: #fff;
}

.wrap {
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 0 24px;
}

/* Header / nav */
header {
  padding: 40px 0 8px;
}

.site-name {
  font-size: 26px;
  letter-spacing: 0.5px;
  margin: 0;
  font-weight: normal;
}

.site-name a { color: var(--ink); text-decoration: none; }

nav {
  margin-top: 14px;
  padding-bottom: 20px;
  border-bottom: 1px solid var(--rule);
}

nav a {
  font-family: Arial, Helvetica, sans-serif;
  font-size: 14px;
  text-transform: uppercase;
  letter-spacing: 1px;
  color: var(--muted);
  text-decoration: none;
  margin-right: 22px;
}

nav a:hover, nav a.active { color: var(--link); }

/* Home layout */
.intro {
  display: flex;
  gap: 32px;
  align-items: flex-start;
  padding: 36px 0 8px;
}

.intro img {
  width: 180px;
  height: auto;
  border-radius: 3px;
  flex-shrink: 0;
}

.intro .lede { margin-top: 0; }

h2 {
  font-size: 15px;
  font-family: Arial, Helvetica, sans-serif;
  text-transform: uppercase;
  letter-spacing: 1.5px;
  color: var(--muted);
  border-bottom: 1px solid var(--rule);
  padding-bottom: 6px;
  margin: 40px 0 18px;
}

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

.contact p { margin: 4px 0; }

/* Publications */
.pub-list { list-style: none; padding: 0; margin: 0; }
.pub-list li { margin-bottom: 22px; }
.pub-title { font-style: italic; }
.pub-meta { color: var(--muted); font-size: 16px; }
.pub-links { font-family: Arial, Helvetica, sans-serif; font-size: 14px; }

footer {
  margin: 60px 0 40px;
  padding-top: 20px;
  border-top: 1px solid var(--rule);
  font-family: Arial, Helvetica, sans-serif;
  font-size: 13px;
  color: var(--muted);
}

@media (max-width: 560px) {
  body { font-size: 17px; }
  .intro { flex-direction: column; gap: 20px; }
  .intro img { width: 150px; }
}