:root {
  --background: #ffffff;
  --text: #202124;
  --muted: #60656b;
  --link: #245883;
  --link-hover: #173c5c;
  --border: #dfe2e5;
  --soft: #f6f7f8;
  --max-width: 1040px;
  --page-padding: clamp(1.25rem, 4vw, 2.4rem);
  --sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Helvetica, Arial, sans-serif;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  scroll-padding-top: 5rem;
}

body {
  margin: 0;
  color: var(--text);
  background: var(--background);
  font-family: var(--sans);
  font-size: 16px;
  line-height: 1.62;
  -webkit-font-smoothing: antialiased;
}

a {
  color: var(--link);
  text-decoration-thickness: 1px;
  text-underline-offset: 0.16em;
}

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

img {
  display: block;
  max-width: 100%;
}

button {
  font: inherit;
}

:focus-visible {
  outline: 2px solid var(--link);
  outline-offset: 3px;
}

.page-width {
  width: min(100%, calc(var(--max-width) + 2 * var(--page-padding)));
  padding-inline: var(--page-padding);
  margin-inline: auto;
}

.skip-link {
  position: fixed;
  top: 0.75rem;
  left: 0.75rem;
  z-index: 1000;
  padding: 0.55rem 0.75rem;
  color: white;
  background: var(--text);
  transform: translateY(-160%);
}

.skip-link:focus {
  transform: translateY(0);
}

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(255, 255, 255, 0.97);
  border-bottom: 1px solid var(--border);
}

.header-inner {
  display: flex;
  width: min(100%, calc(var(--max-width) + 2 * var(--page-padding)));
  min-height: 4.1rem;
  padding-inline: var(--page-padding);
  margin-inline: auto;
  align-items: center;
  justify-content: space-between;
  gap: 2rem;
}

.site-name {
  color: var(--text);
  font-size: 1.02rem;
  font-weight: 650;
  text-decoration: none;
}

.site-nav {
  display: flex;
  align-items: center;
  gap: clamp(0.75rem, 1.8vw, 1.25rem);
  font-size: 0.86rem;
}

.site-nav a {
  color: #3e4348;
  text-decoration: none;
}

.site-nav a:hover,
.site-nav a[aria-current="page"] {
  color: var(--link);
  text-decoration: underline;
  text-underline-offset: 0.24rem;
}

.menu-toggle {
  display: none;
  width: 2.5rem;
  height: 2.5rem;
  padding: 0.55rem;
  background: white;
  border: 1px solid var(--border);
  cursor: pointer;
}

.menu-toggle span:not(.sr-only) {
  display: block;
  height: 1px;
  margin: 0.28rem 0;
  background: var(--text);
}

.intro {
  display: grid;
  grid-template-columns: 1fr;
  row-gap: 3rem;
  padding-block: clamp(4.5rem, 9vw, 7rem);
  align-items: start;
}

.intro-main {
  max-width: 48rem;
}

.intro h1 {
  margin: 0 0 0.35rem;
  font-size: clamp(2.75rem, 6vw, 4.35rem);
  font-weight: 650;
  letter-spacing: -0.045em;
  line-height: 1.05;
}

.position {
  max-width: 46rem;
  margin: 0 0 1.8rem;
  color: var(--muted);
  font-size: 1rem;
}

.intro-text {
  max-width: 44rem;
  margin: 0;
  font-size: clamp(1.05rem, 1.8vw, 1.18rem);
  line-height: 1.62;
}

.primary-links {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem 1.2rem;
  margin-top: 1.65rem;
  font-size: 0.92rem;
}

.portrait {
  width: 230px;
  height: 230px;
  object-fit: cover;
  object-position: center;
  border: 1px solid var(--border);
}

.intro-details {
  display: grid;
  grid-column: 1 / -1;
  grid-template-columns: minmax(0, 1.1fr) minmax(18rem, 0.9fr);
  gap: 2.5rem clamp(2.5rem, 7vw, 5.5rem);
  padding-top: 2.5rem;
  border-top: 1px solid var(--border);
}

.intro-about h2 {
  margin: 0 0 0.8rem;
  font-size: 1.12rem;
  font-weight: 650;
}

.intro-about p {
  margin: 0 0 0.85rem;
}

.intro-about p:last-child {
  margin-bottom: 0;
}

.about-sidebar {
  display: flex;
  min-width: 0;
  flex-direction: column;
  gap: 0;
}

.highlights {
  margin-top: 1.1rem;
}

.highlights h2 {
  margin: 0 0 0.85rem;
  font-size: 0.95rem;
  font-weight: 650;
}

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

.highlights li + li {
  margin-top: 0.9rem;
}

.highlights strong,
.highlights span {
  display: block;
}

.highlights strong {
  font-size: 0.86rem;
  font-weight: 650;
}

.highlights span {
  margin-top: 0.12rem;
  color: var(--muted);
  font-size: 0.8rem;
  line-height: 1.45;
}

.section {
  padding-block: clamp(3.75rem, 7vw, 5.6rem);
  border-top: 1px solid var(--border);
}

.section > h2,
.section-heading-row h2 {
  margin: 0;
  font-size: 1.6rem;
  font-weight: 650;
  letter-spacing: -0.02em;
  line-height: 1.25;
}

.research-columns {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: clamp(2.5rem, 7vw, 6rem);
  margin-top: 2rem;
}

.research-columns h3 {
  margin: 0 0 0.55rem;
  font-size: 1.08rem;
  font-weight: 650;
}

.research-columns p {
  margin: 0;
}

.section-heading-row {
  display: flex;
  align-items: end;
  justify-content: space-between;
  gap: 2rem;
  margin-bottom: 2rem;
}

.section-heading-row > div > p {
  max-width: 43rem;
  margin: 0.45rem 0 0;
  color: var(--muted);
  font-size: 0.94rem;
}

.section-heading-row > a {
  flex: 0 0 auto;
  font-size: 0.86rem;
}

.publication-list {
  border-top: 1px solid var(--border);
}

.publication-item {
  display: grid;
  grid-template-columns: 5.5rem minmax(0, 1fr) auto;
  gap: 1rem 1.5rem;
  padding-block: 1.25rem;
  align-items: start;
  border-bottom: 1px solid var(--border);
}

.publication-year {
  margin: 0.15rem 0 0;
  color: var(--muted);
  font-size: 0.76rem;
  line-height: 1.35;
}

.publication-copy h3 {
  margin: 0;
  font-size: 1rem;
  font-weight: 650;
  line-height: 1.45;
}

.publication-copy > p {
  margin: 0.2rem 0 0;
  color: var(--muted);
  font-size: 0.8rem;
  line-height: 1.45;
}

.publication-copy .publication-note {
  max-width: 42rem;
  margin-top: 0.42rem;
  color: var(--text);
  font-size: 0.85rem;
}

.publication-links {
  display: flex;
  gap: 0.85rem;
  margin: 0.12rem 0 0;
  font-size: 0.8rem;
  white-space: nowrap;
}

.education-list {
  margin: 2.25rem 0 0;
}

.education-list div {
  padding: 0.72rem 0;
  border-top: 1px solid var(--border);
}

.education-list div:last-child {
  border-bottom: 1px solid var(--border);
}

.education-list dt {
  color: var(--muted);
  font-size: 0.75rem;
}

.education-list dd {
  margin: 0.18rem 0 0;
  font-size: 0.86rem;
}

.site-footer {
  padding-block: 1.4rem;
  color: var(--muted);
  background: var(--soft);
  border-top: 1px solid var(--border);
  font-size: 0.76rem;
}

@media (max-width: 850px) {
  .menu-toggle {
    display: block;
  }

  .site-nav {
    position: absolute;
    top: 100%;
    right: 0;
    left: 0;
    display: none;
    padding: 0.9rem var(--page-padding) 1.15rem;
    align-items: stretch;
    flex-direction: column;
    gap: 0;
    background: white;
    border-bottom: 1px solid var(--border);
  }

  .site-nav.is-open {
    display: flex;
  }

  .site-nav a {
    padding: 0.42rem 0;
  }

}

@media (max-width: 680px) {
  body {
    font-size: 15px;
  }

  .intro {
    gap: 2.3rem;
    padding-block: 3.75rem;
  }

  .intro-details {
    grid-column: auto;
    grid-template-columns: 1fr;
    gap: 2rem;
    padding-top: 2rem;
  }

  .intro-aside {
    max-width: 230px;
  }

  .portrait {
    width: 190px;
    height: 190px;
  }

  .section {
    padding-block: 3.4rem;
  }

  .research-columns {
    grid-template-columns: 1fr;
  }

  .research-columns {
    gap: 2rem;
  }

  .publication-item {
    grid-template-columns: 4.5rem minmax(0, 1fr);
    gap: 0.55rem 1rem;
    padding-block: 1.15rem;
  }

  .publication-links {
    grid-column: 2;
    justify-self: start;
    margin-top: 0.15rem;
  }

  .section-heading-row {
    align-items: flex-start;
    flex-direction: column;
    gap: 0.65rem;
  }

}

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

@media print {
  .site-header,
  .site-footer {
    display: none;
  }

  .page-width {
    width: 100%;
    max-width: none;
    padding-inline: 0;
  }
}