:root {
  --bg: #ffffff;
  --surface: #f6f7f9;
  --text: #1f2328;
  --muted: #5f6873;
  --line: #e4e7eb;
  --accent: #2563eb;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #111418;
    --surface: #1a1f25;
    --text: #e6e8eb;
    --muted: #9aa4af;
    --line: #2a3139;
    --accent: #60a5fa;
  }
}

* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font: 16px/1.6 -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
}
main, footer { max-width: 860px; margin: 0 auto; padding: 0 20px; }
a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }
h1, h2, h3 { line-height: 1.25; }
h2 {
  font-size: 1.3rem;
  margin: 3rem 0 1.25rem;
  padding-bottom: .4rem;
  border-bottom: 1px solid var(--line);
}
h3 { font-size: 1rem; margin: 0 0 .25rem; }
p { margin: 0 0 .75rem; }

/* Intro */
.intro {
  display: grid;
  grid-template-columns: 1fr 200px;
  gap: 40px;
  align-items: center;
  padding-top: 64px;
}
.intro h1 { font-size: 2.4rem; margin: 0 0 .25rem; letter-spacing: -.01em; }
.headline { color: var(--muted); font-size: 1.05rem; margin-bottom: 1.25rem; }
.portrait { width: 200px; aspect-ratio: 1; border-radius: 50%; object-fit: cover; }
.links { display: flex; flex-wrap: wrap; gap: 8px 10px; margin-top: 1.25rem; }
.links a {
  display: inline-flex; align-items: center; gap: 6px;
  padding: 5px 12px;
  border: 1px solid var(--line); border-radius: 999px;
  color: var(--text); font-size: .9rem;
}
.links a:hover { border-color: var(--accent); color: var(--accent); text-decoration: none; }
.icon { width: 16px; height: 16px; flex: none; }

/* Selected work */
.cards { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; }
.card { border: 1px solid var(--line); border-radius: 10px; overflow: hidden; display: flex; flex-direction: column; }
.card-media {
  aspect-ratio: 16 / 9;
  background: #fff;
  display: flex; align-items: center; justify-content: center;
}
.card-media img, .card-media video { width: 100%; height: 100%; object-fit: contain; }
.card-media span {
  width: 100%; height: 100%;
  display: flex; align-items: center; justify-content: center; text-align: center;
  padding: 16px;
  background: linear-gradient(135deg, #1e3a8a, #0e7490);
  color: #fff; font-weight: 600; font-size: 1.15rem;
}
.card-body { padding: 16px 18px 6px; }
.card-body p { font-size: .93rem; }
.meta { color: var(--muted); font-size: .82rem !important; margin-bottom: .3rem; }

/* Experience */
.timeline { list-style: none; margin: 0; padding: 0; }
.timeline li { display: grid; grid-template-columns: 120px 1fr; gap: 16px; padding: .5rem 0; }
.years { color: var(--muted); font-variant-numeric: tabular-nums; font-size: .93rem; padding-top: 1px; }
.place { color: var(--muted); }
.timeline p { color: var(--muted); font-size: .93rem; margin: .1rem 0 0; }

/* Publications */
.pub { display: grid; grid-template-columns: 180px 1fr; gap: 20px; padding: 14px 0; }
.thumb {
  aspect-ratio: 4 / 3;
  background: #fff;
  border: 1px solid var(--line); border-radius: 8px;
  overflow: hidden;
  display: flex; align-items: center; justify-content: center;
}
.thumb img, .thumb video { width: 100%; height: 100%; object-fit: contain; }
.thumb span { color: #5f6873; font-weight: 600; font-size: .9rem; }
.pub h3 a { color: var(--text); }
.pub h3 a:hover { color: var(--accent); }
.authors, .venue { font-size: .93rem; margin: 0 0 .15rem; }
.venue { color: var(--muted); font-style: italic; }
.pub-links { font-size: .9rem; margin-top: .35rem; }
.pub-links details { display: inline; }
.pub-links summary { display: inline; cursor: pointer; color: var(--accent); }
.pub-links pre {
  margin: .5rem 0 0;
  padding: 12px;
  background: var(--surface);
  border-radius: 6px;
  font-size: .78rem;
  white-space: pre-wrap;
  overflow-wrap: anywhere;
}

/* Patents, honors, service */
.two-col { display: grid; grid-template-columns: 3fr 2fr; gap: 40px; }
.plain { padding-left: 1.1rem; margin: 0; }
.plain li { margin-bottom: .4rem; font-size: .95rem; }

footer { color: var(--muted); font-size: .85rem; padding-top: 48px; padding-bottom: 48px; }

@media (max-width: 640px) {
  main, footer { padding: 0 16px; }
  footer { padding-top: 40px; padding-bottom: 40px; }
  .intro { grid-template-columns: 1fr; gap: 20px; padding-top: 40px; }
  .portrait { order: -1; width: 128px; }
  .intro h1 { font-size: 2rem; }
  .cards, .two-col { grid-template-columns: 1fr; }
  .two-col { gap: 0; }
  .timeline li { grid-template-columns: 1fr; gap: 0; }
  .pub { grid-template-columns: 1fr; gap: 10px; }
}