:root {
  --canvas: #fbfbfa;
  --paper: #ffffff;
  --ink: #1f2937;
  --muted: #667085;
  --accent: #b7792f;
  --line: #e2e6eb;
  --soft: #f4f6f8;
  --serif: "Source Serif 4", Georgia, serif;
  --sans: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  --container: min(1080px, calc(100vw - 40px));
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  background: var(--canvas);
  color: var(--ink);
  font-family: var(--sans);
  font-size: 16px;
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}
a { color: inherit; text-underline-offset: 3px; }
img { display: block; max-width: 100%; }
::selection { background: #f2dfc5; }
.container { width: var(--container); margin-inline: auto; }

.skip-link {
  position: fixed;
  top: -60px;
  left: 16px;
  z-index: 100;
  padding: 8px 12px;
  background: var(--ink);
  color: white;
}
.skip-link:focus { top: 12px; }

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  background: rgba(251, 251, 250, .94);
  border-bottom: 1px solid var(--line);
  backdrop-filter: blur(12px);
}
.header-inner {
  min-height: 72px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 32px;
}
.site-name {
  font: 700 24px/1 var(--serif);
  text-decoration: none;
}
nav { display: flex; align-items: center; gap: 28px; }
nav a {
  color: var(--muted);
  font-size: 14px;
  font-weight: 500;
  text-decoration: none;
}
nav a:hover { color: var(--accent); }

.page-layout {
  display: grid;
  grid-template-columns: 250px minmax(0, 1fr);
  gap: 64px;
  align-items: start;
  padding-block: 64px 80px;
}
.profile-column {
  position: sticky;
  top: 104px;
}
.portrait-frame {
  aspect-ratio: 4 / 5;
  overflow: hidden;
  background: #edf0f3;
  border: 1px solid var(--line);
  border-radius: 8px;
}
.portrait-frame img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center top;
}
.identity { margin-top: 24px; }
.identity h1 {
  margin: 0;
  font: 700 32px/1.1 var(--serif);
  letter-spacing: -.02em;
}
.identity h1 span {
  display: block;
  margin-top: 5px;
  color: var(--muted);
  font: 500 15px/1.4 var(--sans);
  letter-spacing: 0;
}
.role { margin: 16px 0 2px; color: var(--accent); font-weight: 600; }
.institution { margin: 0; color: var(--muted); font-size: 14px; line-height: 1.5; }
.profile-links {
  display: flex;
  flex-wrap: wrap;
  gap: 7px 14px;
  margin-top: 20px;
  padding-bottom: 24px;
  border-bottom: 1px solid var(--line);
}
.profile-links a, .project-link {
  color: var(--ink);
  font-size: 13px;
  font-weight: 500;
}
.profile-links a:hover, .project-link:hover { color: var(--accent); }
.sidebar-section { margin-top: 24px; }
.sidebar-section h2 {
  margin: 0 0 10px;
  font: 600 14px/1.4 var(--sans);
}
.sidebar-section ul {
  list-style: none;
  margin: 0;
  padding: 0;
  color: var(--muted);
  font-size: 13px;
  line-height: 1.85;
}
.project-link { display: inline; color: var(--muted); line-height: 1.55; }

.content-column { min-width: 0; }
.content-section {
  padding-block: 8px 56px;
  scroll-margin-top: 100px;
}
.content-section + .content-section {
  padding-top: 50px;
  border-top: 1px solid var(--line);
}
.content-section h2 {
  margin: 0 0 24px;
  font: 700 34px/1.15 var(--serif);
  letter-spacing: -.02em;
}
.about-section p {
  margin: 0 0 18px;
  color: #374151;
  font-size: 17px;
}
.about-section p:last-child { margin-bottom: 0; }
.about-section a, .contact-note a { color: var(--accent); font-weight: 500; }

.section-heading {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 24px;
}
.section-heading > a {
  flex: none;
  color: var(--accent);
  font-size: 13px;
  font-weight: 500;
  text-decoration: none;
}
.news-list {
  list-style: none;
  margin: 0;
  padding: 0;
}
.news-list li {
  margin: 0 0 8px;
  color: #475467;
  font-size: 14px;
  line-height: 1.6;
}
.news-list time {
  color: var(--accent);
  font-size: 13px;
  font-weight: 600;
}
.news-list a { color: var(--ink); font-weight: 500; }
.news-list a:hover { color: var(--accent); }
.earlier-news { margin-top: 8px; }
.earlier-news summary {
  width: fit-content;
  color: var(--accent);
  font-size: 13px;
  font-weight: 500;
  cursor: pointer;
}
.earlier-news[open] summary { margin-bottom: 8px; }
.publication-note {
  margin: -9px 0 16px;
  color: var(--muted);
  font-size: 12px;
}
.publication {
  margin: 0;
  padding: 24px 0;
  border-top: 1px solid var(--line);
}
.publication-featured {
  display: grid;
  grid-template-columns: 190px minmax(0, 1fr);
  gap: 24px;
  align-items: start;
}
.paper-thumb {
  display: flex;
  align-items: center;
  justify-content: center;
  aspect-ratio: 4 / 3;
  margin: 2px 0 0;
  overflow: hidden;
  background: var(--paper);
  border: 1px solid var(--line);
  border-radius: 5px;
}
.paper-thumb img {
  width: 100%;
  height: 100%;
  object-fit: contain;
}
.paper-thumb-small { padding: 10px; }
.publication-copy { min-width: 0; }
.publication-topline {
  min-height: 20px;
  display: flex;
  justify-content: space-between;
  gap: 16px;
  margin-bottom: 8px;
  color: var(--accent);
  font-size: 11px;
  font-weight: 600;
  letter-spacing: .06em;
  text-transform: uppercase;
}
.publication-topline a { text-decoration: none; }
.paper-links {
  display: flex;
  flex: none;
  gap: 10px;
}
.paper-links a { color: var(--muted); }
.paper-links a:hover { color: var(--accent); }
.publication h3 {
  margin: 0;
  font: 600 19px/1.38 var(--sans);
  letter-spacing: -.015em;
}
.publication h3 a { text-decoration: none; }
.publication h3 a:hover { color: var(--accent); }
.publication p {
  margin: 9px 0 0;
  color: var(--muted);
  font-size: 14px;
  line-height: 1.6;
}
.publication .authors { color: #475467; font-size: 13px; }
.publication .authors strong { color: var(--accent); }
.publication sup { font-size: .72em; }

.history-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 38px;
}
.history-grid h3 {
  margin: 0 0 15px;
  font: 600 16px/1.4 var(--sans);
}
.history-list {
  list-style: none;
  margin: 0;
  padding: 0;
}
.history-list li {
  display: grid;
  gap: 3px;
  padding: 15px 0;
  border-top: 1px solid var(--line);
}
.history-list time, .honors-list time {
  color: var(--accent);
  font-size: 11px;
  font-weight: 600;
  text-transform: uppercase;
}
.history-list strong { font-size: 14px; }
.history-list span { color: var(--muted); font-size: 13px; }
.history-list a { color: var(--accent); font-weight: 500; }

.honors-list {
  list-style: none;
  margin: 0;
  padding: 0;
  border-top: 1px solid var(--line);
}
.honors-list li {
  display: grid;
  grid-template-columns: 92px minmax(0, 1fr);
  gap: 20px;
  padding: 14px 0;
  border-bottom: 1px solid var(--line);
  font-size: 14px;
}
.contact-note {
  padding: 24px;
  background: var(--soft);
  border-radius: 6px;
  color: var(--muted);
  font-size: 14px;
}
.contact-note p { margin: 0; }

.site-footer {
  min-height: 80px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  border-top: 1px solid var(--line);
  color: var(--muted);
  font-size: 12px;
}
.site-footer p { margin: 0; }

:focus-visible { outline: 3px solid #dba762; outline-offset: 3px; }

@media (max-width: 780px) {
  .header-inner { min-height: auto; padding-block: 18px 14px; flex-wrap: wrap; }
  nav { width: 100%; gap: 20px; overflow-x: auto; padding-bottom: 2px; }
  nav a { white-space: nowrap; }
  .page-layout { grid-template-columns: 1fr; gap: 52px; padding-top: 40px; }
  .profile-column {
    position: static;
    display: grid;
    grid-template-columns: 180px minmax(0, 1fr);
    gap: 0 28px;
    align-items: start;
  }
  .portrait-frame { grid-row: span 2; }
  .identity { margin-top: 10px; }
  .profile-links { align-self: end; margin-top: 16px; }
  .sidebar-section { grid-column: 1 / -1; }
  .publication-featured { grid-template-columns: 190px minmax(0, 1fr); }
}

@media (min-width: 781px) and (max-width: 920px) {
  .page-layout { grid-template-columns: 220px minmax(0, 1fr); gap: 40px; }
  .publication-featured { grid-template-columns: 150px minmax(0, 1fr); gap: 18px; }
}

@media (max-width: 520px) {
  :root { --container: min(100% - 28px, 1080px); }
  body { font-size: 15px; }
  .site-name { font-size: 22px; }
  nav { gap: 16px; }
  nav a { font-size: 12px; }
  .profile-column { grid-template-columns: 118px minmax(0, 1fr); gap: 0 20px; }
  .identity h1 { font-size: 27px; }
  .role { margin-top: 12px; font-size: 14px; }
  .institution { font-size: 12px; }
  .profile-links { grid-column: 1 / -1; margin-top: 20px; }
  .content-section { padding-bottom: 44px; }
  .content-section + .content-section { padding-top: 40px; }
  .content-section h2 { font-size: 28px; }
  .about-section p { font-size: 15px; }
  .publication { padding: 22px 0; }
  .publication-featured { grid-template-columns: 1fr; gap: 16px; }
  .paper-thumb { aspect-ratio: 16 / 9; }
  .paper-thumb-small { padding: 14px; }
  .publication-topline { align-items: flex-start; }
  .publication h3 { font-size: 17px; }
  .history-grid { grid-template-columns: 1fr; gap: 34px; }
  .honors-list li { grid-template-columns: 74px 1fr; gap: 12px; }
  .site-footer { min-height: 100px; flex-direction: column; align-items: flex-start; justify-content: center; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
}