:root {
  --ink: #16232b;
  --muted: #5a6a73;
  --line: #e3e8eb;
  --bg: #ffffff;
  --bg-soft: #f4f7f8;
  --accent: #0e5a6b;
  --accent-soft: #e4f0f2;
  --max: 1080px;
  --serif: "Source Serif 4", Georgia, serif;
  --sans: "Inter", system-ui, -apple-system, "Segoe UI", sans-serif;
}

* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font: 400 17px/1.65 var(--sans);
}
img { max-width: 100%; display: block; }
a { color: var(--accent); text-decoration-thickness: 1px; text-underline-offset: 3px; }
a:hover { text-decoration-thickness: 2px; }
h1, h2, h3 { font-family: var(--serif); font-weight: 600; line-height: 1.2; margin: 0 0 .6em; }
h1 { font-size: clamp(2.1rem, 4.5vw, 3.1rem); letter-spacing: -.01em; }
h2 { font-size: clamp(1.5rem, 3vw, 1.9rem); }
h3 { font-size: 1.25rem; }
p { margin: 0 0 1.1em; }

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

/* Header */
.site-header { border-bottom: 1px solid var(--line); background: var(--bg); }
.site-header .wrap {
  display: flex; align-items: center; justify-content: space-between;
  flex-wrap: wrap; gap: 8px 24px; padding-top: 18px; padding-bottom: 18px;
}
.brand { font-family: var(--serif); font-size: 1.35rem; font-weight: 600; color: var(--ink); text-decoration: none; }
.brand span { color: var(--accent); }
.brand-group { display: flex; align-items: center; gap: 16px; }
.brand-logo { display: block; padding-left: 16px; border-left: 1px solid var(--line); }
.brand-logo img { height: 52px; width: auto; }
.nav { display: flex; flex-wrap: wrap; gap: 4px 22px; }
.nav a { color: var(--muted); text-decoration: none; font-size: .95rem; padding: 4px 0; }
.nav a:hover, .nav a[aria-current="page"] { color: var(--ink); box-shadow: inset 0 -2px 0 var(--accent); }

/* Hero */
.hero { position: relative; min-height: 440px; display: flex; align-items: flex-end; color: #fff; }
.hero img { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; }
.hero::after { content: ""; position: absolute; inset: 0; background: linear-gradient(180deg, rgba(10,30,38,.05) 20%, rgba(10,30,38,.72)); }
.hero .wrap { position: relative; z-index: 1; padding-top: 80px; padding-bottom: 56px; width: 100%; }
.hero h1 { margin-bottom: .3em; }
.hero p { max-width: 640px; font-size: 1.15rem; margin: 0; color: rgba(255,255,255,.92); }

.page-head { padding: 64px 0 24px; }
.page-head p { color: var(--muted); max-width: 720px; font-size: 1.1rem; }

section { padding: 48px 0; }
section.soft { background: var(--bg-soft); }
.lead { font-size: 1.15rem; max-width: 760px; }
.eyebrow { font: 600 .78rem/1 var(--sans); letter-spacing: .12em; text-transform: uppercase; color: var(--accent); margin-bottom: 14px; }

/* Cards */
.grid-3 { display: grid; grid-template-columns: repeat(auto-fit, minmax(260px, 1fr)); gap: 28px; }
.card { display: block; color: inherit; text-decoration: none; }
.card img { aspect-ratio: 4 / 3; object-fit: cover; width: 100%; border-radius: 4px; margin-bottom: 14px; }
.card h3 { margin-bottom: .35em; }
.card p { color: var(--muted); font-size: .97rem; margin: 0; }
.card:hover h3 { color: var(--accent); }

/* Research topics */
.topic { display: grid; grid-template-columns: 1fr 1.25fr; gap: 40px; align-items: start; padding: 40px 0; border-top: 1px solid var(--line); }
.topic img { width: 100%; aspect-ratio: 4 / 3; object-fit: cover; border-radius: 4px; }
.topic:nth-of-type(even) { grid-template-columns: 1.25fr 1fr; }
.topic:nth-of-type(even) img { order: 2; }
.prose { max-width: 760px; }

/* Projects under a research topic */
.projects { margin-top: 20px; padding-top: 16px; border-top: 1px solid var(--line); }
.projects ul { margin: 0; padding-left: 1.1em; }
.projects li { font-size: .95rem; color: var(--muted); margin-bottom: .5em; }

/* Team */
.pi { display: grid; grid-template-columns: 300px 1fr; gap: 44px; align-items: start; }
.pi img { width: 100%; aspect-ratio: 4 / 5; object-fit: cover; border-radius: 4px; }
.role { color: var(--muted); margin-top: -.3em; }
.name-link { color: inherit; text-decoration-color: var(--accent); text-decoration-thickness: 2px; text-underline-offset: 5px; }
.name-link:hover { color: var(--accent); }
.meta { font-size: .95rem; color: var(--muted); }
.people { display: grid; grid-template-columns: repeat(auto-fill, minmax(280px, 1fr)); gap: 40px 32px; }
.person img, .person .avatar { width: 100%; aspect-ratio: 1; object-fit: cover; border-radius: 4px; margin-bottom: 14px; }
.avatar { display: flex; align-items: center; justify-content: center; background: var(--accent-soft); color: var(--accent); font: 600 2.4rem var(--serif); }
.person h3 { margin-bottom: .1em; }
.person .role { font-size: .93rem; margin: 0 0 .7em; }
.person p { font-size: .95rem; }
.person .links { margin: -.4em 0 .8em; font-size: .9rem; }
.alumni a.li-name { text-decoration: none; }
.alumni a.li-name strong { color: var(--accent); }
.alumni a.li-name:hover strong { text-decoration: underline; text-underline-offset: 3px; }
.alumni { list-style: none; padding: 0; margin: 0; columns: 2 300px; }
.alumni li { padding: 6px 0; break-inside: avoid; color: var(--muted); }
.alumni strong { color: var(--ink); font-weight: 500; }

/* Publications */
.year { display: grid; grid-template-columns: 90px 1fr; gap: 24px; padding: 22px 0; border-top: 1px solid var(--line); }
.year h2 { font-size: 1.35rem; color: var(--accent); }
.pubs { list-style: none; margin: 0; padding: 0; }
.pubs li { margin-bottom: 16px; }
.pubs .title { font-weight: 500; }
.pubs .src { color: var(--muted); font-size: .95rem; }

/* News */
.news { list-style: none; margin: 0; padding: 0; display: grid; gap: 22px; }
.news-item h3 { font-size: 1.15rem; margin-bottom: .25em; }
.news-item p { margin: 0 0 .3em; max-width: 720px; }
.news-kind { font: 600 .72rem/1.4 var(--sans); letter-spacing: .1em; text-transform: uppercase; color: var(--accent); margin: 0 0 .35em; }
.news-links { font-size: .93rem; color: var(--muted); }
.news-card { display: block; color: inherit; text-decoration: none; padding-top: 16px; border-top: 2px solid var(--accent); }
.news-card h3 { font-size: 1.12rem; margin-bottom: .35em; }
.news-card p:last-child { color: var(--muted); font-size: .95rem; margin: 0; }
.news-card:hover h3 { color: var(--accent); }
.more { margin-top: 24px; }

/* Footer */
.site-footer { border-top: 1px solid var(--line); padding: 36px 0; color: var(--muted); font-size: .92rem; margin-top: 32px; }
.site-footer .wrap { display: flex; flex-wrap: wrap; justify-content: space-between; align-items: center; gap: 20px; }
.site-footer p { margin: 0; }

.btn { display: inline-block; background: var(--accent); color: #fff; padding: 11px 20px; border-radius: 4px; text-decoration: none; font-weight: 500; }
.btn:hover { background: #0a4654; }

@media (max-width: 760px) {
  body { font-size: 16px; }
  .wrap { padding: 0 16px; }
  .hero { min-height: 360px; }
  .brand-logo img { height: 44px; }
  .topic, .topic:nth-of-type(even), .pi { grid-template-columns: 1fr; gap: 20px; }
  .topic:nth-of-type(even) img { order: 0; }
  .pi img { max-width: 280px; }
  .year { grid-template-columns: 1fr; gap: 6px; }
  section { padding: 36px 0; }
  .page-head { padding: 40px 0 12px; }
}