:root {
  --ink: #10213f;
  --ink-soft: #53627a;
  --paper: #f7f9fc;
  --surface: #ffffff;
  --line: #dce3ee;
  --blue: #2458d3;
  --blue-soft: #eaf0ff;
  --navy: #09162d;
  --max-width: 1160px;
  --shadow: 0 18px 50px rgba(16, 33, 63, 0.1);
}

* { box-sizing: border-box; }

html {
  scroll-behavior: smooth;
  scroll-padding-top: 6rem;
}

body {
  margin: 0;
  color: var(--ink);
  background: var(--paper);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  font-size: 16px;
  line-height: 1.65;
}

a { color: var(--blue); }

a:hover { color: #163d9d; }

.site-header {
  position: sticky;
  z-index: 10;
  top: 0;
  border-bottom: 1px solid rgba(220, 227, 238, 0.82);
  background: rgba(247, 249, 252, 0.92);
  backdrop-filter: blur(18px);
}

.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: min(calc(100% - 2rem), var(--max-width));
  min-height: 72px;
  margin: 0 auto;
}

.wordmark {
  color: var(--ink);
  font-family: Georgia, "Times New Roman", serif;
  font-size: 1.17rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  text-decoration: none;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 1.4rem;
}

.nav-links a {
  color: var(--ink-soft);
  font-size: 0.91rem;
  font-weight: 650;
  text-decoration: none;
}

.nav-links a[aria-current="page"],
.nav-links a:hover { color: var(--blue); }

.shell {
  width: min(calc(100% - 2rem), var(--max-width));
  margin: 0 auto;
}

.hero {
  display: grid;
  grid-template-columns: minmax(0, 1.28fr) minmax(270px, 0.72fr);
  gap: clamp(2rem, 7vw, 6rem);
  align-items: center;
  min-height: calc(100vh - 72px);
  padding: 5.5rem 0;
}

.eyebrow,
.kicker {
  margin: 0 0 1rem;
  color: var(--blue);
  font-size: 0.77rem;
  font-weight: 800;
  letter-spacing: 0.13em;
  text-transform: uppercase;
}

h1, h2, h3 {
  font-family: Georgia, "Times New Roman", serif;
  letter-spacing: -0.035em;
  line-height: 1.08;
}

h1 {
  max-width: 790px;
  margin: 0;
  font-size: clamp(3.2rem, 7vw, 6.4rem);
  font-weight: 600;
}

.hero-copy {
  max-width: 720px;
  margin: 1.75rem 0 0;
  color: var(--ink-soft);
  font-size: clamp(1.08rem, 2vw, 1.3rem);
  line-height: 1.65;
}

.actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.8rem;
  margin-top: 2rem;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 46px;
  padding: 0.7rem 1rem;
  border: 1px solid var(--ink);
  border-radius: 999px;
  color: var(--ink);
  font-size: 0.92rem;
  font-weight: 750;
  text-decoration: none;
}

.button.primary {
  border-color: var(--blue);
  color: #fff;
  background: var(--blue);
}

.button:hover {
  color: #fff;
  background: var(--ink);
}

.portrait-wrap { position: relative; }

.portrait-wrap::before {
  position: absolute;
  inset: -1.15rem 1.6rem 1.4rem -1.15rem;
  z-index: -1;
  border-radius: 2rem;
  background: linear-gradient(145deg, #cfddff, #edf2ff 70%);
  content: "";
}

.portrait {
  display: block;
  width: 100%;
  aspect-ratio: 0.88;
  border-radius: 1.35rem;
  box-shadow: var(--shadow);
  object-fit: cover;
  object-position: 51% center;
}

.portrait-note {
  margin: 0.8rem 0 0;
  color: var(--ink-soft);
  font-size: 0.82rem;
}

.section { padding: 6.5rem 0; }

.section + .section { border-top: 1px solid var(--line); }

.section-heading {
  display: grid;
  grid-template-columns: 0.6fr 1.4fr;
  gap: 2rem;
  align-items: start;
  margin-bottom: 2.8rem;
}

.section-heading h2,
.page-intro h1 {
  margin: 0;
  font-size: clamp(2.25rem, 5vw, 4.25rem);
  font-weight: 600;
}

.section-heading p {
  max-width: 680px;
  margin: 0;
  color: var(--ink-soft);
  font-size: 1.05rem;
}

.work-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1rem;
}

.work-card,
.paper-card {
  border: 1px solid var(--line);
  border-radius: 1.1rem;
  background: var(--surface);
}

.work-card {
  min-height: 305px;
  padding: 1.6rem;
}

.work-card .number {
  color: var(--blue);
  font-family: Georgia, "Times New Roman", serif;
  font-size: 2.35rem;
  line-height: 1;
}

.work-card h3 {
  margin: 2.5rem 0 0.85rem;
  font-size: 1.45rem;
}

.work-card p {
  margin: 0;
  color: var(--ink-soft);
}

.research-strip {
  display: flex;
  flex-wrap: wrap;
  gap: 0.65rem;
}

.research-strip span,
.venue {
  display: inline-flex;
  align-items: center;
  width: fit-content;
  border-radius: 999px;
  color: var(--blue);
  background: var(--blue-soft);
  font-size: 0.8rem;
  font-weight: 800;
}

.research-strip span { padding: 0.5rem 0.8rem; }

.collaborator-list {
  margin: 0;
  padding: 0;
  border-top: 1px solid var(--line);
  list-style: none;
}

.collaborator-list li {
  display: flex;
  justify-content: space-between;
  gap: 1.5rem;
  padding: 0.85rem 0;
  border-bottom: 1px solid var(--line);
}

.collaborator-list a {
  color: var(--ink);
  font-weight: 700;
  text-decoration: none;
}

.collaborator-list a:hover { color: var(--blue); }

.collaborator-list span {
  color: var(--ink-soft);
  font-size: 0.9rem;
  text-align: right;
}

.trajectory {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 3.2rem;
}

.trajectory p {
  margin: 0;
  color: var(--ink-soft);
}

.trajectory strong { color: var(--ink); }

.site-footer {
  margin-top: 3rem;
  padding: 2.2rem 0;
  border-top: 1px solid var(--line);
  color: var(--ink-soft);
  font-size: 0.86rem;
}

.footer-inner {
  display: flex;
  justify-content: space-between;
  gap: 1rem;
}

.page-intro {
  max-width: 830px;
  padding: 7rem 0 4rem;
}

.page-intro p {
  max-width: 690px;
  margin: 1.4rem 0 0;
  color: var(--ink-soft);
  font-size: 1.12rem;
}

.year-nav {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-bottom: 4rem;
}

.year-nav a {
  padding: 0.42rem 0.72rem;
  border: 1px solid var(--line);
  border-radius: 999px;
  color: var(--ink-soft);
  background: var(--surface);
  font-size: 0.82rem;
  font-weight: 750;
  text-decoration: none;
}

.publication-year {
  display: grid;
  grid-template-columns: 115px 1fr;
  gap: 2rem;
  padding: 2.6rem 0;
  border-top: 1px solid var(--line);
}

.publication-year h2 {
  position: sticky;
  top: 100px;
  align-self: start;
  margin: 0;
  color: var(--blue);
  font-size: 1.5rem;
}

.paper-list {
  display: grid;
  gap: 0.85rem;
}

.paper-card { padding: 1.25rem 1.35rem; }

.paper-card h3 {
  margin: 0.4rem 0 0.55rem;
  font-family: inherit;
  font-size: 1.02rem;
  font-weight: 800;
  letter-spacing: -0.012em;
  line-height: 1.4;
}

.paper-card h3 a {
  color: var(--ink);
  text-decoration: none;
}

.paper-card h3 a:hover { color: var(--blue); }

.paper-card p {
  margin: 0;
  color: var(--ink-soft);
  font-size: 0.91rem;
}

.venue {
  padding: 0.25rem 0.56rem;
  font-size: 0.72rem;
  letter-spacing: 0.025em;
}

.paper-links { margin-top: 0.5rem !important; }

.paper-links a {
  margin-right: 0.75rem;
  font-weight: 720;
  text-decoration: none;
}

@media (max-width: 850px) {
  .hero { grid-template-columns: 1fr; min-height: auto; padding: 4.5rem 0 5.5rem; }
  .hero-copy { max-width: 640px; }
  .portrait-wrap { width: min(100%, 430px); }
  .section-heading,
  .trajectory { grid-template-columns: 1fr; }
  .work-grid { grid-template-columns: 1fr; }
  .work-card { min-height: auto; }
  .work-card h3 { margin-top: 1.5rem; }
}

@media (max-width: 620px) {
  .nav { min-height: 64px; }
  .wordmark { font-size: 1rem; }
  .nav-links { gap: 0.8rem; }
  .nav-links a { font-size: 0.82rem; }
  .nav-links .scholar-link { display: none; }
  .hero { padding-top: 3.5rem; }
  h1 { font-size: clamp(2.8rem, 15vw, 4.1rem); }
  .section { padding: 4.5rem 0; }
  .publication-year { grid-template-columns: 1fr; gap: 1rem; }
  .publication-year h2 { position: static; }
  .footer-inner { flex-direction: column; }
}

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