:root {
  color-scheme: light;
  --bg: #f8f8f6;
  --surface: #ffffff;
  --surface-alt: #f3f4f1;
  --ink: #1f2a36;
  --muted: #5f6b76;
  --line: #d6dce2;
  --accent: #153e75;
  --accent-soft: #eaf0f7;
  --max: 1160px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: "Helvetica Neue", Arial, sans-serif;
  line-height: 1.6;
}
a { color: var(--accent); text-underline-offset: 2px; }
img, video { display: block; max-width: 100%; }
h1, h2, h3, h4 {
  margin: 0;
  color: #18222d;
  font-family: Georgia, "Times New Roman", serif;
  font-weight: 700;
  line-height: 1.2;
}
p { margin: 0; }
.container { width: min(calc(100% - 40px), var(--max)); margin: 0 auto; }
.topbar { background: var(--surface); border-bottom: 1px solid var(--line); }
.topbar-inner { display: flex; align-items: center; justify-content: space-between; gap: 24px; padding: 20px 0; }
.brand { display: grid; gap: 4px; }
.brand small, .kicker, .label { color: var(--muted); font-size: 12px; letter-spacing: 0.08em; text-transform: uppercase; }
.brand strong { color: #18222d; font-family: Georgia, "Times New Roman", serif; font-size: 28px; font-weight: 700; }
.nav { display: flex; flex-wrap: wrap; gap: 18px; }
.nav a { color: var(--muted); font-size: 14px; text-decoration: none; }
.nav a:hover, .nav a:focus-visible, .nav a[aria-current="page"] { color: var(--accent); }
.hero { padding: 44px 0 34px; background: var(--surface); border-bottom: 1px solid var(--line); }
.hero-grid { display: grid; grid-template-columns: minmax(0, 1.15fr) minmax(300px, 0.85fr); gap: 34px; align-items: start; }
.hero-copy { display: grid; gap: 18px; }
.hero-copy h1, .page-head h1 { max-width: 780px; font-size: 48px; }
.hero-copy .lead, .page-head p { max-width: 760px; color: var(--muted); font-size: 17px; }
.hero-media { border: 1px solid var(--line); background: var(--surface-alt); padding: 14px; }
.video-frame { overflow: hidden; aspect-ratio: 16 / 9; background: #dfe5ea; }
.video-frame video { width: 100%; height: 100%; background: #dfe5ea; object-fit: cover; }
.page-head { display: grid; gap: 14px; padding: 44px 0 28px; }
section { padding: 38px 0; }
.section-head { display: grid; gap: 8px; margin-bottom: 20px; }
.section-head h2 { font-size: 32px; }
.section-head p { max-width: 70ch; color: var(--muted); }
.panel, .news-list, .project-panel, .publication-year, .person-card, .alumni-card, .contact-card { background: var(--surface); border: 1px solid var(--line); padding: 24px; }
.panel h2, .panel h3, .news-item h3, .project-panel h2, .publication-year h2, .person-card h3, .contact-card h2 { font-size: 24px; }
.panel p, .news-item p, .project-panel p, .person-card p, .contact-card p { color: var(--muted); }
.intro-news { display: grid; grid-template-columns: minmax(0, 1.1fr) minmax(280px, 0.9fr); gap: 28px; }
.news-list { display: grid; gap: 0; padding: 0; }
.news-item { padding: 20px 22px; }
.news-item + .news-item { border-top: 1px solid var(--line); }
.news-item time { display: block; margin-bottom: 8px; color: var(--muted); font-size: 12px; letter-spacing: 0.08em; text-transform: uppercase; }
.stack { display: grid; gap: 18px; }
.tabs { display: flex; flex-wrap: wrap; gap: 0; margin-bottom: 22px; border-bottom: 1px solid var(--line); }
.tab-button { appearance: none; border: 0; border-bottom: 2px solid transparent; margin-bottom: -1px; padding: 12px 18px; background: transparent; color: var(--muted); cursor: pointer; font: inherit; }
.tab-button:hover, .tab-button:focus-visible, .tab-button[aria-selected="true"] { color: var(--accent); border-bottom-color: var(--accent); }
.tab-panel[hidden] { display: none; }
.project-panel { display: grid; gap: 18px; }
.project-meta { display: grid; gap: 14px; }
.meta-block h3, .publication-group h3 { margin-bottom: 8px; font-family: "Helvetica Neue", Arial, sans-serif; font-size: 14px; letter-spacing: 0.08em; text-transform: uppercase; }
ul { margin: 0; padding-left: 20px; }
li { margin: 8px 0; }
.links-row { display: flex; flex-wrap: wrap; gap: 12px 16px; }
.links-row a { font-weight: 600; text-decoration: none; }
.publication-year { display: grid; gap: 24px; }
.publication-group { display: grid; gap: 10px; }
.publication-list { list-style: none; padding-left: 0; }
.publication-list li { margin: 0; padding: 12px 0; border-top: 1px solid var(--line); color: var(--muted); }
.publication-list strong { color: var(--ink); }
.team-section { display: grid; gap: 16px; }
.person-card { display: grid; gap: 10px; }
.person-card .role { color: var(--muted); font-size: 13px; }
.alumni-list { list-style: none; padding-left: 0; }
.alumni-list li { display: grid; grid-template-columns: minmax(160px, 0.35fr) 1fr; gap: 18px; margin: 0; padding: 12px 0; border-top: 1px solid var(--line); color: var(--muted); }
.alumni-list strong { color: var(--ink); }
.contact-grid { display: grid; grid-template-columns: 1.1fr 0.9fr; gap: 18px; }
.footer { padding: 24px 0 40px; border-top: 1px solid var(--line); color: var(--muted); font-size: 14px; }
@media (max-width: 900px) {
  .hero-grid, .intro-news, .contact-grid { grid-template-columns: 1fr; }
}
@media (max-width: 720px) {
  .topbar-inner { align-items: start; flex-direction: column; }
  .container { width: min(calc(100% - 28px), var(--max)); }
  .hero-copy h1, .page-head h1 { font-size: 34px; }
  .panel, .project-panel, .publication-year, .person-card, .alumni-card, .contact-card, .hero-media { padding: 18px; }
  .alumni-list li { grid-template-columns: 1fr; gap: 2px; }
}

.citation-count { display: inline-block; margin-left: 8px; color: var(--muted); font-size: 13px; }

.project-subsection {
  padding: 14px 0 0;
}

.project-subsection > h3 {
  margin-bottom: 12px;
  font-family: "Helvetica Neue", Arial, sans-serif;
  font-size: 14px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.subproject-list {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 14px;
}

.subproject-card,
.media-card {
  border: 1px solid var(--line);
  background: var(--surface-alt);
}

.subproject-card {
  padding: 18px;
}

.subproject-card h4,
.media-card h4 {
  margin-bottom: 8px;
  font-size: 18px;
}

.subproject-card p,
.media-card p,
.resource-link-list span {
  color: var(--muted);
}

.resource-link-list {
  display: grid;
  gap: 0;
  padding-left: 0;
  list-style: none;
  border: 1px solid var(--line);
  background: var(--surface);
}

.resource-link-list li {
  display: grid;
  grid-template-columns: minmax(220px, 0.4fr) 1fr;
  gap: 18px;
  margin: 0;
  padding: 14px 16px;
  border-top: 1px solid var(--line);
}

.resource-link-list li:first-child {
  border-top: 0;
}

.resource-link-list a {
  font-weight: 700;
  text-decoration: none;
}

.media-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 14px;
}

.media-card {
  display: grid;
  overflow: hidden;
}

.media-card video,
.media-placeholder {
  width: 100%;
  aspect-ratio: 16 / 9;
  background: #dfe5ea;
}

.media-card video {
  object-fit: cover;
}

.media-placeholder {
  display: grid;
  place-items: center;
  color: var(--muted);
  font-size: 12px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.media-card-body {
  padding: 14px;
}

.media-card-wide {
  grid-column: span 2;
}

@media (max-width: 900px) {
  .subproject-list,
  .media-grid {
    grid-template-columns: 1fr 1fr;
  }

  .media-card-wide {
    grid-column: span 2;
  }
}

@media (max-width: 720px) {
  .subproject-list,
  .media-grid,
  .resource-link-list li {
    grid-template-columns: 1fr;
  }

  .media-card-wide {
    grid-column: auto;
  }
}

.nested-tabs {
  margin: 4px 0 18px;
}

.nested-tabs .tab-button {
  padding-left: 14px;
  padding-right: 14px;
}

.nested-project-panel {
  padding: 20px;
  background: var(--surface-alt);
}

.nested-project-panel > h4 {
  margin: 0;
  font-size: 22px;
}

.nested-project-panel .resource-link-list,
.nested-project-panel .media-card {
  background: var(--surface);
}