:root {
  --bg: #ffffff;
  --text: #2b2f33;
  --muted: #6b7178;
  --rule: #e6e8eb;
  --soft: #f5f6f8;
  --accent: #3d6a96;
  --accent-soft: #e9eff5;
  --maxw: 760px;
}

*, *::before, *::after { box-sizing: border-box; }

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

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: "Source Sans 3", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  font-size: 17px;
  line-height: 1.65;
  font-weight: 400;
}

a { color: var(--accent); text-decoration: none; }
a:hover, a:focus-visible { text-decoration: underline; text-underline-offset: 2px; }

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

/* Top bar */
.topbar { border-bottom: 1px solid var(--rule); }
.topbar .wrap {
  display: flex; justify-content: space-between; align-items: center;
  gap: 16px; padding-top: 14px; padding-bottom: 14px;
}
.topbar .name-small { font-weight: 600; color: var(--text); white-space: nowrap; }
.topbar nav { display: flex; flex-wrap: wrap; gap: 6px 20px; font-size: 15px; }
.topbar nav a { color: var(--muted); }
.topbar nav a:hover { color: var(--accent); }

/* Header */
header.intro { padding: 56px 0 8px; }
.intro-grid {
  display: grid;
  grid-template-columns: 1fr 200px;
  gap: 40px;
  align-items: start;
}
h1 {
  font-size: 40px; line-height: 1.15; font-weight: 300;
  margin: 0 0 6px; letter-spacing: -0.01em;
}
h1 strong { font-weight: 600; }
.role { color: var(--muted); margin: 0 0 22px; font-size: 16px; }
.portrait {
  width: 200px; height: 200px; border-radius: 50%;
  background: var(--soft);
  border: 1px solid var(--rule);
  display: block; object-fit: cover;
}
.intro p { margin: 0 0 14px; }

.contact {
  display: flex; flex-wrap: wrap; gap: 6px 18px;
  margin: 18px 0 0; padding: 0; list-style: none; font-size: 15px;
}
.contact li { color: var(--muted); }

.tags { display: flex; flex-wrap: wrap; gap: 8px; margin: 18px 0 0; padding: 0; list-style: none; }
.tags li {
  font-size: 14px; color: var(--accent); background: var(--accent-soft);
  padding: 2px 10px; border-radius: 999px;
}

/* Sections */
section { padding: 36px 0 4px; }
h2 {
  font-size: 22px; font-weight: 600; margin: 0 0 18px;
  padding-bottom: 8px; border-bottom: 1px solid var(--rule);
}
h3 { font-size: 17px; font-weight: 600; margin: 0 0 4px; }

.research { list-style: none; padding: 0; margin: 0; }
.research li { margin: 0 0 22px; }
.research p { margin: 0; color: var(--text); }
.research .meta { color: var(--muted); font-size: 14px; margin: 0 0 4px; }

.pubs { list-style: none; padding: 0; margin: 0; }
.pubs li { margin: 0 0 20px; padding-left: 14px; border-left: 2px solid var(--rule); }
.pubs .title { font-weight: 600; display: block; }
.pubs .authors, .pubs .venue { display: block; font-size: 15.5px; }
.pubs .venue { color: var(--muted); font-style: italic; }
.pubs .links { display: block; margin-top: 4px; font-size: 14px; }
.pubs .links a {
  display: inline-block; border: 1px solid var(--rule); border-radius: 4px;
  padding: 0 8px; margin-right: 6px; color: var(--accent);
}
.pubs .links a:hover { border-color: var(--accent); text-decoration: none; }
.pubs .note { font-size: 14px; color: var(--muted); font-style: normal; }
.more { font-size: 15px; color: var(--muted); }

.timeline { list-style: none; padding: 0; margin: 0; }
.timeline li {
  display: grid; grid-template-columns: 1fr auto; gap: 4px 16px;
  padding: 10px 0; border-bottom: 1px solid var(--soft);
}
.timeline li:last-child { border-bottom: 0; }
.timeline .org { font-weight: 600; }
.timeline .pos { color: var(--muted); grid-column: 1; font-size: 15.5px; }
.timeline .date { color: var(--muted); font-size: 15px; white-space: nowrap; grid-column: 2; grid-row: 1; text-align: right; }

footer {
  margin-top: 48px; border-top: 1px solid var(--rule);
  padding: 20px 0 36px; font-size: 14px; color: var(--muted);
}
footer .wrap { display: flex; flex-wrap: wrap; justify-content: space-between; gap: 8px 20px; }
footer a { color: var(--muted); }
footer a:hover { color: var(--accent); }

@media (max-width: 640px) {
  body { font-size: 16px; }
  .wrap { padding: 0 16px; }
  header.intro { padding-top: 32px; }
  .intro-grid { grid-template-columns: 1fr; gap: 20px; }
  .intro-grid .photo { order: -1; }
  .portrait { width: 150px; height: 150px; }
  h1 { font-size: 32px; }
  .timeline li { grid-template-columns: 1fr; }
  .timeline .pos { grid-row: 2; }
  .timeline .date { grid-column: 1; grid-row: 3; text-align: left; font-size: 14px; }
}