:root {
  --bg: #f4f7f8;
  --surface: #ffffff;
  --surface-alt: #edf4f7;
  --text: #173146;
  --muted: #5a6e80;
  --line: #d6e0e6;
  --accent: #00b2e3;
  --accent-strong: #003a5d;
  --shadow: 0 18px 40px rgba(24, 50, 75, 0.08);
  --radius: 18px;
  --max: 1160px;
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  scroll-padding-top: 7rem;
}

body {
  margin: 0;
  min-width: 320px;
  font-family: "Source Sans 3", sans-serif;
  color: var(--text);
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.58), rgba(255, 255, 255, 0.58)),
    linear-gradient(180deg, #f4f7f8 0%, #eef3f6 100%);
}

a {
  color: inherit;
}

.skip-link {
  position: absolute;
  top: -3rem;
  left: 1rem;
  z-index: 30;
  padding: 0.75rem 1rem;
  border-radius: 999px;
  background: var(--accent-strong);
  color: #fff;
  font-weight: 700;
  text-decoration: none;
}

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

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  border-bottom: 1px solid rgba(214, 224, 230, 0.9);
  background: rgba(244, 247, 248, 0.94);
  backdrop-filter: blur(12px);
}

.header-inner,
.page,
.site-footer {
  width: min(calc(100% - 2rem), var(--max));
  margin: 0 auto;
}

.header-inner {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 1.25rem;
  align-items: end;
  padding: 1.1rem 0;
}

.site-title-block {
  display: grid;
  gap: 0.25rem;
}

.site-eyebrow,
.section-kicker,
.card-label,
.entry-year {
  margin: 0;
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--accent);
}

.site-title {
  font-family: "Fraunces", serif;
  font-size: clamp(2.3rem, 4.8vw, 3.6rem);
  font-weight: 700;
  text-decoration: none;
  line-height: 1;
}

.site-subtitle {
  margin-top: 0.2rem;
}

.site-subtitle p {
  margin: 0;
  color: var(--muted);
  font-size: 0.92rem;
  line-height: 1.35;
}

.nav-toggle {
  display: none;
  min-height: 2.8rem;
  padding: 0.7rem 1rem;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: var(--surface);
  color: var(--text);
  font: inherit;
  font-weight: 700;
  cursor: pointer;
}

.site-nav {
  grid-column: 1 / -1;
  display: flex;
  flex-wrap: wrap;
  gap: 0.8rem 1.2rem;
  padding-top: 0.35rem;
}

.site-nav a {
  color: var(--muted);
  font-weight: 600;
  text-decoration: none;
  padding: 0.35rem 0.7rem;
  border-radius: 999px;
  transition:
    color 160ms ease,
    background-color 160ms ease,
    box-shadow 160ms ease;
}

.site-nav a:hover,
.site-nav a:focus-visible {
  color: var(--text);
  background: rgba(0, 178, 227, 0.1);
}

.site-nav a.is-active {
  color: var(--accent-strong);
  background: rgba(0, 178, 227, 0.16);
  box-shadow: inset 0 0 0 1px rgba(0, 178, 227, 0.26);
}

.page {
  padding: 2.4rem 0 4rem;
}

.intro {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1rem;
  align-items: start;
  margin-bottom: 1.5rem;
}

.intro-main,
.sidebar-card,
.content-card {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--surface);
  box-shadow: var(--shadow);
}

.intro-main {
  padding: 2rem;
}

.sidebar-card,
.content-card {
  padding: 1.5rem;
}

.section-header h2,
.sidebar-card h2,
.content-card h3,
.publication-item h4,
.entry-item h4,
.research-item h3 {
  margin: 0;
  font-family: "Fraunces", serif;
  line-height: 1.1;
}

.intro-lede {
  margin: 0.85rem 0 0;
  color: var(--muted);
  font-size: 1.16rem;
  line-height: 1.65;
}

.intro-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.8rem;
  margin-top: 1.5rem;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 2.9rem;
  padding: 0.75rem 1.1rem;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: var(--surface);
  color: var(--text);
  font-weight: 700;
  text-decoration: none;
}

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

.sidebar-card h2 {
  margin-top: 0.55rem;
  font-size: 1.8rem;
}

.sidebar-card p,
.sidebar-card li,
.section-body p,
.content-card p,
.standard-list li,
.publication-item p,
.research-item p,
.entry-item p {
  color: var(--muted);
  line-height: 1.65;
}

.link-list,
.standard-list {
  margin: 0.9rem 0 0;
  padding-left: 1.15rem;
}

.link-list li + li,
.standard-list li + li {
  margin-top: 0.45rem;
}

.content-section + .content-section {
  margin-top: 1.6rem;
}

.section-header {
  margin-bottom: 0.9rem;
}

.section-header h2 {
  margin-top: 0.45rem;
  font-size: clamp(1.6rem, 3vw, 2.35rem);
}

.page-title {
  margin-top: 0.45rem;
  font-family: "Fraunces", serif;
  font-size: clamp(2.2rem, 5vw, 3.8rem);
  line-height: 1.08;
}

.two-column,
.three-column,
.content-stack {
  display: grid;
  gap: 1rem;
}

.two-column {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.three-column {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.entry-list,
.publication-list,
.research-list {
  display: grid;
  gap: 1rem;
}

.research-numbered {
  margin: 0;
  padding-left: 1.4rem;
}

.research-numbered .research-item {
  padding-left: 0.2rem;
}

.entry-item + .entry-item,
.publication-item + .publication-item,
.research-item + .research-item {
  padding-top: 1rem;
  border-top: 1px solid var(--line);
}

.entry-item h4,
.publication-item h4,
.research-item h3 {
  font-size: 1.2rem;
}

.publication-item h4 {
  font-weight: 500;
}

.content-card > h3 {
  margin-bottom: 1.15rem;
  padding-bottom: 0.8rem;
  border-bottom: 1px solid var(--line);
  color: var(--accent-strong);
}

.entry-item h4 {
  color: var(--text);
}

.teaching-summary .entry-item h4 {
  font-weight: 500;
}

.degree-line {
  display: grid;
  grid-template-columns: 6.5rem minmax(0, 1fr);
  gap: 0.85rem;
  margin: 0.45rem 0 0;
}

.degree-line .entry-year {
  padding-top: 0.05rem;
  white-space: nowrap;
}

.teaching-summary {
  gap: 0;
}

.teaching-row {
  display: grid;
  grid-template-columns: 4.5rem minmax(0, 1fr);
  gap: 0.85rem;
  margin: 0.45rem 0 0;
}

.teaching-tag {
  color: var(--accent);
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  white-space: nowrap;
}

.publication-item,
.card-heading {
  display: grid;
  grid-template-columns: 5rem minmax(0, 1fr);
  gap: 1rem;
}

.card-heading {
  display: flex;
  justify-content: space-between;
  align-items: end;
  margin-bottom: 1rem;
}

.card-heading h3 {
  flex: 1;
  margin-right: 1rem;
  white-space: nowrap;
}

.card-heading .small-link {
  flex-shrink: 0;
}

.publication-item .entry-year {
  padding-top: 0.2rem;
}

.publication-item p {
  margin: 0.3rem 0 0;
  overflow: auto;
}

.publication-item span {
  color: var(--text);
  font-weight: 700;
}

.coauthor-link,
.small-link,
.bibtex-link,
.content-card h3 a,
.publication-item h4 a,
.research-item h3 a,
.contact-card a {
  color: var(--accent-strong);
  text-decoration: none;
}

.coauthor-link {
  color: inherit;
  text-decoration: underline;
  text-decoration-color: rgba(91, 111, 131, 0.35);
  text-underline-offset: 0.14em;
}

.bibtex-wordmark {
  display: inline-flex;
  align-items: baseline;
  gap: 0.02em;
  font-family: "Fraunces", serif;
  font-size: 0.82em;
  font-weight: 600;
  letter-spacing: 0.01em;
  opacity: 0.8;
}

.bibtex-bib {
  color: var(--muted);
}

.bibtex-tex {
  color: var(--muted);
}

.publication-item .bibtex-link {
  float: right;
  margin-left: 0.9rem;
}

.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;
}

.coauthor-link:hover,
.coauthor-link:focus-visible,
.small-link:hover,
.small-link:focus-visible,
.content-card h3 a:hover,
.content-card h3 a:focus-visible,
.publication-item h4 a:hover,
.publication-item h4 a:focus-visible,
.research-item h3 a:hover,
.research-item h3 a:focus-visible,
.contact-card a:hover,
.contact-card a:focus-visible {
  text-decoration: underline;
  text-underline-offset: 0.14em;
}

.site-footer {
  padding: 0 0 2.5rem;
  color: var(--muted);
}

.contact-card {
  max-width: 34rem;
  padding: 1.8rem;
}

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

.contact-list li {
  display: flex;
  align-items: flex-start;
  gap: 0.7rem;
  color: var(--muted);
  line-height: 1.7;
}

.contact-list li + li {
  margin-top: 0.35rem;
}

.contact-icon {
  flex: 0 0 1rem;
  color: var(--accent);
  font-size: 0.95rem;
  line-height: 1.7;
  text-align: center;
}

.contact-list li:first-child {
  color: var(--text);
  font-weight: 600;
}

.contact-links-list {
  display: grid;
  gap: 0.45rem;
  margin-top: 1.1rem;
  padding-top: 1rem;
  border-top: 1px solid var(--line);
}

@media (max-width: 980px) {
  .two-column,
  .three-column {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 700px) {
  .header-inner,
  .page,
  .site-footer {
    width: min(calc(100% - 1rem), var(--max));
  }

  .header-inner {
    grid-template-columns: minmax(0, 1fr) auto;
    align-items: center;
  }

  .nav-toggle {
    display: inline-flex;
    align-items: center;
    justify-content: center;
  }

  .site-nav {
    display: none;
    flex-direction: column;
    gap: 0.3rem;
    padding: 0.65rem;
    border: 1px solid var(--line);
    border-radius: 18px;
    background: var(--surface);
  }

  .site-nav[data-open="true"] {
    display: flex;
  }

  .site-nav a {
    padding: 0.65rem 0.8rem;
    border-radius: 12px;
  }

  .site-nav a:hover,
  .site-nav a:focus-visible {
    background: var(--surface-alt);
  }

  .site-nav a.is-active {
    background: rgba(0, 178, 227, 0.16);
    box-shadow: inset 0 0 0 1px rgba(0, 178, 227, 0.26);
  }

  .intro-main,
  .sidebar-card,
  .content-card {
    padding: 1.2rem;
  }

  .intro-actions {
    flex-direction: column;
  }

  .button {
    width: 100%;
  }

  .publication-item,
  .card-heading {
    grid-template-columns: 1fr;
    gap: 0.35rem;
  }

  .publication-item .bibtex-link {
    float: none;
    margin-left: 0.35rem;
  }

  .card-heading {
    display: grid;
    align-items: start;
  }

  .card-heading .small-link {
    grid-column: auto;
  }

  .card-heading h3 {
    margin-right: 0;
    white-space: normal;
  }
}