:root {
  --ink: #182127;
  --ink-soft: #53616a;
  --paper: #fffefb;
  --surface: #f3f6f4;
  --line: #dce4df;
  --accent: #0d6657;
  --accent-dark: #084b40;
  --accent-pale: #dfeee9;
  --warm: #a7602d;
  --max-width: 1120px;
  --shadow: 0 16px 40px rgba(22, 55, 47, 0.09);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  scroll-padding-top: 76px;
}

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

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

a {
  color: var(--accent);
  text-decoration-thickness: 1px;
  text-underline-offset: 0.18em;
}

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

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

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

h1 {
  margin-bottom: 0.2rem;
  font-size: clamp(3.6rem, 8vw, 6.8rem);
  font-weight: 500;
  line-height: 0.98;
}

h2 {
  margin-bottom: 1rem;
  font-size: clamp(2.2rem, 5vw, 3.8rem);
  font-weight: 500;
  line-height: 1.05;
}

h3 {
  line-height: 1.35;
}

.skip-link {
  position: fixed;
  z-index: 100;
  top: 0;
  left: 1rem;
  padding: 0.65rem 1rem;
  color: white;
  background: var(--accent-dark);
  transform: translateY(-120%);
}

.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;
  z-index: 20;
  top: 0;
  border-bottom: 1px solid rgba(220, 228, 223, 0.9);
  background: rgba(255, 254, 251, 0.92);
  backdrop-filter: blur(14px);
}

.nav-shell {
  display: flex;
  max-width: var(--max-width);
  min-height: 68px;
  align-items: center;
  justify-content: space-between;
  gap: 2rem;
  padding: 0 28px;
  margin: 0 auto;
}

.wordmark {
  display: inline-flex;
  align-items: center;
  gap: 0.7rem;
  color: var(--ink);
  font-weight: 750;
  text-decoration: none;
}

.wordmark-mark {
  display: grid;
  width: 34px;
  height: 34px;
  place-items: center;
  border-radius: 50%;
  color: white;
  background: var(--accent);
  font-family: Georgia, "Times New Roman", serif;
  font-size: 0.85rem;
  font-weight: 600;
}

.site-nav {
  display: flex;
  align-items: center;
  gap: clamp(0.9rem, 2vw, 1.7rem);
}

.site-nav a {
  color: var(--ink-soft);
  font-size: 0.86rem;
  font-weight: 700;
  text-decoration: none;
}

.site-nav a:hover,
.site-nav a:focus-visible {
  color: var(--accent);
}

.nav-toggle {
  display: none;
  width: 42px;
  height: 42px;
  padding: 10px;
  border: 0;
  border-radius: 50%;
  background: var(--surface);
}

.nav-toggle span:not(.sr-only) {
  display: block;
  height: 2px;
  margin: 4px 0;
  background: var(--ink);
}

.section {
  max-width: var(--max-width);
  padding: 104px 28px;
  margin: 0 auto;
}

.section-tinted {
  position: relative;
}

.section-tinted::before {
  position: absolute;
  z-index: -1;
  top: 0;
  right: calc(50% - 50vw);
  bottom: 0;
  left: calc(50% - 50vw);
  background: var(--surface);
  content: "";
}

.hero {
  display: grid;
  min-height: min(760px, calc(100vh - 68px));
  align-items: center;
  grid-template-columns: minmax(0, 1.35fr) minmax(260px, 0.65fr);
  gap: clamp(3rem, 8vw, 7rem);
}

.eyebrow {
  margin-bottom: 1rem;
  color: var(--accent);
  font-size: 0.76rem;
  font-weight: 800;
  letter-spacing: 0.16em;
  text-transform: uppercase;
}

.hero-role {
  margin-bottom: 1.5rem;
  color: var(--warm);
  font-family: Georgia, "Times New Roman", serif;
  font-size: clamp(1.25rem, 2.3vw, 1.7rem);
}

.hero-intro {
  max-width: 730px;
  margin-bottom: 2rem;
  color: #36434a;
  font-size: clamp(1rem, 1.5vw, 1.13rem);
}

.hero-links {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
}

.button {
  display: inline-flex;
  min-height: 43px;
  align-items: center;
  justify-content: center;
  padding: 0.6rem 1rem;
  border: 1px solid var(--line);
  border-radius: 999px;
  color: var(--ink);
  background: white;
  font-size: 0.9rem;
  font-weight: 750;
  text-decoration: none;
}

.button:hover {
  border-color: var(--accent);
  color: var(--accent);
}

.button-primary,
.button-primary:hover {
  border-color: var(--accent);
  color: white;
  background: var(--accent);
}

.portrait-wrap {
  position: relative;
  margin: 0;
}

.portrait-wrap::before {
  position: absolute;
  z-index: -1;
  inset: 18px -18px -18px 18px;
  border-radius: 45% 45% 14px 14px;
  background: var(--accent-pale);
  content: "";
}

.portrait {
  width: 100%;
  aspect-ratio: 4 / 5;
  border-radius: 45% 45% 14px 14px;
  box-shadow: var(--shadow);
  object-fit: cover;
}

.section-heading {
  max-width: 780px;
  margin-bottom: 3rem;
}

.section-heading h2 {
  margin-bottom: 0;
}

.section-lead {
  margin-top: 1.25rem;
  color: var(--ink-soft);
  font-size: 1.05rem;
}

.research-grid {
  display: grid;
  align-items: start;
  grid-template-columns: 0.72fr 1.28fr;
  gap: clamp(2.5rem, 7vw, 6rem);
}

.research-grid h3 {
  font-family: Georgia, "Times New Roman", serif;
  font-size: 1.65rem;
  font-weight: 500;
}

.reference-note {
  padding-top: 1rem;
  border-top: 1px solid var(--line);
  color: var(--ink-soft);
  font-size: 0.9rem;
}

.research-gallery {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1rem;
}

.research-gallery figure {
  padding: 0.55rem;
  margin: 0;
  border: 1px solid var(--line);
  border-radius: 10px;
  background: white;
}

.research-gallery .gallery-feature {
  grid-column: 1 / -1;
}

.research-gallery img {
  width: 100%;
  aspect-ratio: 16 / 10;
  border-radius: 6px;
  object-fit: contain;
  background: #f8faf9;
}

.research-gallery figcaption {
  padding: 0.55rem 0.25rem 0.15rem;
  color: var(--ink-soft);
  font-size: 0.78rem;
}

.publication-list {
  display: grid;
  padding: 0;
  margin: 0;
  counter-reset: publications;
  gap: 1rem;
  list-style: none;
}

.publication-card {
  position: relative;
  padding: 2rem 2.1rem 2rem 5rem;
  border: 1px solid var(--line);
  border-radius: 12px;
  background: white;
  box-shadow: 0 5px 18px rgba(22, 55, 47, 0.035);
  counter-increment: publications;
}

.publication-card::before {
  position: absolute;
  top: 2rem;
  left: 2rem;
  color: var(--accent);
  content: counter(publications, decimal-leading-zero);
  font-family: Georgia, "Times New Roman", serif;
  font-size: 1.2rem;
}

.publication-topline {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  margin-bottom: 0.85rem;
}

.publication-type {
  padding: 0.25rem 0.6rem;
  border-radius: 999px;
  color: var(--accent-dark);
  background: var(--accent-pale);
  font-size: 0.7rem;
  font-weight: 800;
  letter-spacing: 0.07em;
  text-transform: uppercase;
}

.publication-type.patent {
  color: #70421e;
  background: #f6e9dc;
}

.publication-year {
  color: var(--ink-soft);
  font-size: 0.84rem;
  font-weight: 750;
}

.publication-card h3 {
  max-width: 900px;
  margin-bottom: 0.75rem;
  font-family: Georgia, "Times New Roman", serif;
  font-size: clamp(1.18rem, 2vw, 1.42rem);
  font-weight: 600;
}

.authors {
  margin-bottom: 0.65rem;
  color: var(--ink-soft);
  font-size: 0.9rem;
}

.authors strong {
  color: var(--accent-dark);
  background: linear-gradient(transparent 62%, var(--accent-pale) 62%);
}

.publication-meta {
  margin-bottom: 0;
  color: var(--ink);
  font-size: 0.91rem;
}

.patent-number {
  padding: 0.12rem 0.42rem;
  border-radius: 4px;
  background: var(--surface);
  font-family: ui-monospace, SFMono-Regular, Consolas, monospace;
  font-size: 0.86rem;
}

.teaching-roles {
  display: grid;
  margin-bottom: 3.2rem;
  grid-template-columns: repeat(3, 1fr);
  gap: 1rem;
}

.role-card {
  padding: 1.4rem;
  border-top: 3px solid var(--accent);
  border-radius: 0 0 10px 10px;
  background: white;
  box-shadow: var(--shadow);
}

.role-date {
  color: var(--warm);
  font-size: 0.74rem;
  font-weight: 800;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.role-card h3 {
  margin: 0.65rem 0 0.4rem;
  font-family: Georgia, "Times New Roman", serif;
  font-size: 1.12rem;
}

.role-card p {
  margin-bottom: 0;
  color: var(--ink-soft);
  font-size: 0.83rem;
}

.resource-intro {
  display: grid;
  align-items: end;
  margin-bottom: 1.4rem;
  grid-template-columns: 1fr 1fr;
  gap: 2rem;
}

.resource-intro h3 {
  margin-bottom: 0.4rem;
  font-family: Georgia, "Times New Roman", serif;
  font-size: 1.65rem;
}

.resource-intro p {
  margin-bottom: 0;
  color: var(--ink-soft);
}

.quick-resources {
  display: flex;
  flex-wrap: wrap;
  justify-content: flex-end;
  gap: 0.55rem;
}

.quick-resources a {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  padding: 0.48rem 0.75rem;
  border: 1px solid var(--line);
  border-radius: 999px;
  color: var(--ink);
  background: white;
  font-size: 0.78rem;
  font-weight: 700;
  text-decoration: none;
}

.quick-resources a span {
  color: var(--accent);
  font-size: 0.65rem;
}

.resource-groups {
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: 12px;
  background: white;
}

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

.resource-groups summary {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 1rem 1.25rem;
  cursor: pointer;
  font-weight: 750;
  list-style: none;
}

.resource-groups summary::-webkit-details-marker {
  display: none;
}

.resource-groups summary::before {
  display: inline-block;
  width: 1rem;
  color: var(--accent);
  content: "+";
}

.resource-groups details[open] summary::before {
  content: "−";
}

.resource-groups summary > span:first-child {
  margin-right: auto;
}

.resource-count {
  color: var(--ink-soft);
  font-size: 0.76rem;
  font-weight: 600;
}

.resource-list {
  padding: 0 1.25rem 0.8rem 3.25rem;
  margin: 0;
  list-style: none;
}

.resource-list li {
  display: flex;
  min-height: 48px;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 0.6rem 0;
  border-top: 1px dashed var(--line);
}

.resource-list b {
  font-size: 0.88rem;
}

.resource-list small {
  display: block;
  color: var(--ink-soft);
  font-size: 0.72rem;
}

.file-links {
  display: inline-flex;
  flex: 0 0 auto;
  gap: 0.4rem;
}

.file-links a {
  min-width: 41px;
  padding: 0.23rem 0.42rem;
  border: 1px solid var(--line);
  border-radius: 4px;
  font-size: 0.68rem;
  font-weight: 800;
  text-align: center;
  text-decoration: none;
}

.two-column {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: clamp(2rem, 7vw, 6rem);
}

.column-title {
  padding-bottom: 0.75rem;
  margin-bottom: 1.5rem;
  border-bottom: 2px solid var(--ink);
  font-family: Georgia, "Times New Roman", serif;
  font-size: 1.45rem;
}

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

.timeline li {
  display: grid;
  position: relative;
  grid-template-columns: 112px 1fr;
  gap: 1rem;
  padding: 0 0 1.6rem 1.1rem;
  border-left: 1px solid var(--line);
}

.timeline li::before {
  position: absolute;
  top: 0.35rem;
  left: -5px;
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background: var(--accent);
  content: "";
}

.timeline-date {
  color: var(--accent);
  font-size: 0.76rem;
  font-weight: 800;
}

.timeline p {
  margin: 0.15rem 0 0;
  color: var(--ink-soft);
  font-size: 0.84rem;
}

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

.compact-list li {
  display: grid;
  padding: 0.9rem 0;
  border-bottom: 1px solid var(--line);
  grid-template-columns: 105px 1fr;
  gap: 1rem;
}

.compact-list time {
  color: var(--accent);
  font-size: 0.78rem;
  font-weight: 800;
}

.compact-list span {
  font-size: 0.92rem;
}

.award-grid {
  display: grid;
  padding: 0;
  margin: 0;
  grid-template-columns: repeat(3, 1fr);
  gap: 1rem;
  list-style: none;
}

.award-grid li {
  padding: 1.35rem;
  border: 1px solid var(--line);
  border-radius: 10px;
}

.award-grid span {
  display: block;
  margin-bottom: 0.55rem;
  color: var(--warm);
  font-size: 0.76rem;
  font-weight: 800;
}

.award-grid strong {
  display: block;
  font-family: Georgia, "Times New Roman", serif;
  font-size: 1.05rem;
}

.award-grid p {
  margin: 0.35rem 0 0;
  color: var(--ink-soft);
  font-size: 0.8rem;
}

.scholarship-note {
  padding: 1rem 1.2rem;
  margin: 1rem 0 0;
  border-left: 3px solid var(--accent);
  background: var(--surface);
  font-size: 0.9rem;
}

.more-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1rem;
}

.interest-card {
  display: grid;
  overflow: hidden;
  align-items: center;
  border: 1px solid var(--line);
  border-radius: 12px;
  background: white;
  grid-template-columns: 150px 1fr;
}

.interest-card img {
  width: 100%;
  height: 100%;
  min-height: 160px;
  object-fit: cover;
}

.interest-card div {
  padding: 1.3rem;
}

.interest-card h3 {
  margin-bottom: 0.35rem;
  font-family: Georgia, "Times New Roman", serif;
  font-size: 1.3rem;
}

.interest-card p {
  margin-bottom: 0;
  color: var(--ink-soft);
  font-size: 0.86rem;
}

.friend-links {
  padding-top: 2rem;
  margin-top: 2rem;
  border-top: 1px solid var(--line);
}

.friend-links h3 {
  font-family: Georgia, "Times New Roman", serif;
}

.friend-links div {
  display: flex;
  flex-wrap: wrap;
  gap: 0.65rem 1.4rem;
}

.friend-links a {
  font-size: 0.84rem;
  font-weight: 700;
}

.site-footer {
  padding: 2.4rem 28px;
  color: rgba(255, 255, 255, 0.75);
  background: var(--accent-dark);
  text-align: center;
}

.site-footer p {
  margin-bottom: 0.25rem;
  font-size: 0.78rem;
}

.site-footer a {
  color: white;
}

.credit {
  opacity: 0.72;
}

.visitor-counter {
  display: inline-flex;
  min-height: 30px;
  align-items: center;
  gap: 0.55rem;
  padding: 0.35rem 0.65rem;
  margin-top: 0.75rem;
  border-radius: 999px;
  color: var(--accent-dark) !important;
  background: rgba(255, 255, 255, 0.94);
  font-size: 0.72rem;
  font-weight: 800;
  line-height: 1;
  text-decoration: none;
}

.visitor-counter:hover {
  background: white;
}

.visitor-counter img.statcounter {
  display: block;
  width: auto;
  height: auto;
  max-width: 100%;
  image-rendering: auto;
}

@media (max-width: 880px) {
  .nav-toggle {
    display: block;
  }

  .site-nav {
    display: none;
    position: absolute;
    top: 68px;
    right: 0;
    left: 0;
    align-items: stretch;
    padding: 0.6rem 28px 1rem;
    border-bottom: 1px solid var(--line);
    background: var(--paper);
    box-shadow: var(--shadow);
    flex-direction: column;
    gap: 0;
  }

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

  .site-nav a {
    padding: 0.75rem 0;
  }

  .hero {
    grid-template-columns: 1fr 240px;
    gap: 3rem;
  }

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

  .quick-resources {
    justify-content: flex-start;
  }

  .teaching-roles,
  .award-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 650px) {
  .section {
    padding: 76px 20px;
  }

  .nav-shell {
    padding: 0 20px;
  }

  .hero {
    display: flex;
    min-height: auto;
    padding-top: 62px;
    flex-direction: column-reverse;
  }

  .portrait-wrap {
    width: min(74vw, 290px);
    align-self: flex-start;
  }

  .hero-intro {
    font-size: 1rem;
  }

  .research-gallery,
  .teaching-roles,
  .two-column,
  .award-grid,
  .more-grid {
    grid-template-columns: 1fr;
  }

  .publication-card {
    padding: 1.4rem;
  }

  .publication-card::before {
    display: none;
  }

  .resource-list {
    padding-left: 1.25rem;
  }

  .resource-list li {
    align-items: flex-start;
    flex-direction: column;
  }

  .timeline li {
    grid-template-columns: 88px 1fr;
  }

  .compact-list li {
    grid-template-columns: 82px 1fr;
  }

  .interest-card {
    grid-template-columns: 112px 1fr;
  }
}

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