:root {
  --paper: #ffffff;
  --ink: #111111;
  --muted: #555555;
  --line: #dddddd;
  --accent: #0b5e54;
  color-scheme: light;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  font-size: 16px;
  line-height: 1.58;
}

a {
  color: var(--accent);
  text-decoration-thickness: 0.06em;
  text-underline-offset: 0.18em;
}

a:hover {
  color: var(--ink);
}

.skip-link {
  background: var(--ink);
  color: #ffffff;
  left: 1rem;
  padding: 0.55rem 0.8rem;
  position: absolute;
  top: -4rem;
  z-index: 20;
}

.skip-link:focus {
  top: 1rem;
}

.site-header {
  border-bottom: 1px solid var(--line);
}

.nav,
.intro,
.content-section,
.site-footer {
  margin: 0 auto;
  max-width: 920px;
  padding-left: 24px;
  padding-right: 24px;
}

.nav {
  align-items: center;
  display: flex;
  justify-content: space-between;
  min-height: 58px;
}

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

.nav-links {
  display: flex;
  gap: 18px;
  font-size: 0.95rem;
}

.nav-links a {
  color: var(--muted);
  text-decoration: none;
}

.nav-links a:hover {
  color: var(--accent);
}

.intro {
  padding-bottom: 38px;
  padding-top: 50px;
}

.intro-copy {
  max-width: 720px;
}

h1,
h2,
h3,
p {
  margin-top: 0;
}

h1 {
  font-size: 3rem;
  letter-spacing: 0;
  line-height: 1.08;
  margin-bottom: 10px;
}

h2 {
  border-bottom: 1px solid var(--line);
  font-size: 1.34rem;
  letter-spacing: 0;
  line-height: 1.25;
  margin-bottom: 18px;
  padding-bottom: 6px;
}

h3 {
  font-size: 1rem;
  line-height: 1.3;
  margin-bottom: 3px;
}

.affiliation {
  color: var(--muted);
  font-size: 1.03rem;
  margin-bottom: 12px;
}

.contact-row {
  display: flex;
  flex-wrap: wrap;
  gap: 6px 14px;
}

.contact-row a {
  font-weight: 600;
}

.content-section {
  padding-bottom: 34px;
  padding-top: 34px;
}

.section-heading {
  margin-bottom: 0;
}

.research-summary {
  color: #222222;
  font-size: 1.02rem;
  margin-bottom: 12px;
  max-width: 760px;
}

.interest-list,
.award-list {
  color: var(--muted);
  margin: 0;
  padding-left: 1.15rem;
}

.interest-list li,
.award-list li {
  margin-bottom: 5px;
}

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

.publication-list {
  list-style: none;
  margin: 0;
  padding: 0;
}

.publication-list li {
  margin-bottom: 14px;
}

.authors,
.venue {
  color: var(--muted);
  display: block;
  font-size: 0.95rem;
}

.paper-title {
  display: block;
  font-weight: 700;
}

.note {
  color: var(--muted);
  font-size: 0.92rem;
  margin: 2px 0 0;
}

.timeline {
  display: grid;
  gap: 16px;
}

.timeline-item {
  display: grid;
  gap: 16px;
  grid-template-columns: minmax(0, 1fr) 180px;
}

.timeline-item p {
  color: var(--muted);
  margin-bottom: 0;
}

.timeline-item .details {
  margin-top: 5px;
  max-width: 720px;
}

.timeline-item time {
  color: var(--muted);
  font-size: 0.92rem;
  text-align: right;
}

.skills-section {
  padding-bottom: 44px;
}

.skill-groups {
  color: var(--muted);
  display: grid;
  gap: 6px;
}

.skill-groups p {
  margin: 0;
}

.skill-groups strong {
  color: var(--ink);
  margin-right: 8px;
}

.site-footer {
  border-top: 1px solid var(--line);
  color: var(--muted);
  display: flex;
  justify-content: space-between;
  padding-bottom: 36px;
  padding-top: 20px;
}

.site-footer p {
  margin: 0;
}

@media (max-width: 720px) {
  body {
    font-size: 15px;
  }

  .nav {
    align-items: flex-start;
    flex-direction: column;
    gap: 6px;
    padding-bottom: 12px;
    padding-top: 12px;
  }

  .nav-links {
    gap: 12px;
    overflow-x: auto;
    width: 100%;
  }

  .intro,
  .content-section {
    padding-left: 18px;
    padding-right: 18px;
  }

  h1 {
    font-size: 2.5rem;
  }

  .timeline-item {
    grid-template-columns: 1fr;
  }

  .timeline-item time {
    text-align: left;
  }

  .site-footer {
    align-items: flex-start;
    flex-direction: column;
    gap: 6px;
    padding-left: 18px;
    padding-right: 18px;
  }
}

@media (max-width: 380px) {
  h1 {
    font-size: 2.25rem;
  }
}

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