:root {
  --ink: #1b2b3b;
  --muted: #5c6f82;
  --navy: #183b5d;
  --blue: #2f6896;
  --accent: #2f79ad;
  --paper: #edf5fb;
  --white: #ffffff;
  --soft: #e1edf6;
  --line: #c7d9e7;
  --serif: Georgia, "Times New Roman", serif;
  --sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Helvetica, Arial, sans-serif;
  --content: 980px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--ink);
  background-color: var(--paper);
  background-image:
    radial-gradient(circle at 12% -8%, rgba(92, 157, 207, 0.2), transparent 34rem),
    linear-gradient(180deg, #e8f3fb 0%, #f6f9fc 38%, #edf5fb 100%);
  background-attachment: fixed;
  font-family: var(--sans);
  font-size: 16px;
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}

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

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

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

.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;
}

.skip-link {
  position: fixed;
  top: 10px;
  left: 10px;
  z-index: 1000;
  transform: translateY(-160%);
  padding: 8px 12px;
  background: var(--navy);
  color: var(--white);
}

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

.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  border-bottom: 1px solid var(--line);
  background: rgba(237, 245, 251, 0.92);
  backdrop-filter: blur(12px);
}

.nav-shell {
  width: min(calc(100% - 40px), var(--content));
  min-height: 68px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.site-name {
  color: var(--navy);
  font-family: var(--serif);
  font-size: 1.28rem;
  font-weight: 700;
  text-decoration: none;
}

.site-nav {
  display: flex;
  align-items: center;
  gap: 27px;
}

.site-nav a {
  position: relative;
  color: var(--muted);
  font-size: 0.83rem;
  font-weight: 650;
  text-decoration: none;
}

.site-nav a:hover,
.site-nav a:focus-visible,
.site-nav a[aria-current="page"] {
  color: var(--navy);
}

.site-nav a[aria-current="page"]::after {
  position: absolute;
  right: 0;
  bottom: -23px;
  left: 0;
  height: 2px;
  content: "";
  background: var(--accent);
}

.menu-toggle {
  display: none;
  width: 40px;
  height: 40px;
  padding: 8px;
  border: 0;
  background: transparent;
  color: var(--navy);
}

.menu-toggle > span:not(.sr-only) {
  display: block;
  height: 1px;
  margin: 6px 0;
  background: currentColor;
  transition: transform 160ms ease, opacity 160ms ease;
}

.site-main {
  width: min(calc(100% - 40px), var(--content));
  margin: 0 auto;
}

.intro-section {
  padding: 82px 0 72px;
  display: grid;
  grid-template-columns: 190px minmax(0, 1fr);
  gap: 58px;
  align-items: start;
}

.portrait-column {
  padding-top: 8px;
}

.profile-photo {
  width: 180px;
  height: 225px;
  object-fit: cover;
  object-position: center 30%;
  border: 1px solid var(--line);
  background: var(--white);
  box-shadow: 0 12px 30px rgba(24, 59, 93, 0.1);
  filter: saturate(0.86);
}

.profile-links {
  width: 180px;
  margin-top: 13px;
  display: flex;
  flex-wrap: wrap;
  gap: 4px 13px;
}

.profile-links a {
  font-size: 0.77rem;
  font-weight: 650;
  text-decoration: none;
}

.eyebrow {
  margin: 0 0 8px;
  color: var(--accent);
  font-size: 0.7rem;
  font-weight: 800;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

.intro-copy h1,
.page-header h1 {
  margin: 0;
  color: var(--navy);
  font-family: var(--serif);
  font-size: clamp(3.1rem, 7vw, 4.7rem);
  font-weight: 500;
  line-height: 1;
  letter-spacing: -0.045em;
}

.role {
  margin: 17px 0 27px;
  color: var(--navy);
  font-family: var(--serif);
  font-size: 1.26rem;
  line-height: 1.4;
}

.role span {
  display: block;
  color: var(--muted);
  font-family: var(--sans);
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.about-copy {
  max-width: 700px;
}

.about-copy p {
  margin: 0 0 17px;
  color: #405467;
}

.home-section {
  padding: 34px 0;
  display: grid;
  grid-template-columns: 190px 1fr;
  gap: 58px;
  border-top: 1px solid var(--line);
}

.section-label h2 {
  margin: 2px 0 0;
  color: var(--navy);
  font-family: var(--serif);
  font-size: 1.2rem;
  font-weight: 600;
}

.interest-list {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.interest-list span {
  padding: 5px 11px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.64);
  color: var(--muted);
  font-size: 0.76rem;
}

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

.news-row {
  padding: 16px 0;
  display: grid;
  grid-template-columns: 95px 1fr;
  gap: 20px;
  border-bottom: 1px solid var(--line);
}

.news-row time {
  color: var(--accent);
  font-family: var(--serif);
  font-size: 0.88rem;
  font-weight: 600;
}

.news-row p {
  margin: 0;
  color: #465a6d;
  font-size: 0.91rem;
}

.explore-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 12px;
}

.explore-grid a {
  min-height: 122px;
  padding: 20px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  border: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.62);
  box-shadow: 0 8px 24px rgba(24, 59, 93, 0.055);
  text-decoration: none;
  transition: border-color 160ms ease, transform 160ms ease;
}

.explore-grid a:hover,
.explore-grid a:focus-visible {
  border-color: var(--accent);
  transform: translateY(-2px);
}

.explore-grid strong {
  color: var(--navy);
  font-family: var(--serif);
  font-size: 1.05rem;
}

.explore-grid span {
  color: var(--muted);
  font-size: 0.73rem;
}

.inner-page {
  min-height: calc(100vh - 180px);
  min-height: calc(100svh - 180px);
  padding-bottom: 80px;
}

.page-header {
  max-width: 720px;
  padding: 78px 0 48px;
}

.page-header h1 {
  font-size: clamp(3rem, 7vw, 4.3rem);
}

.page-header > p:last-child {
  max-width: 620px;
  margin: 17px 0 0;
  color: var(--muted);
  font-family: var(--serif);
  font-size: 1.14rem;
}

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

.publication-item {
  padding: 33px 0;
  display: grid;
  grid-template-columns: 145px 1fr;
  gap: 38px;
  border-bottom: 1px solid var(--line);
}

.publication-meta time,
.publication-meta span {
  display: block;
}

.publication-meta time {
  color: var(--navy);
  font-family: var(--serif);
  font-size: 1.15rem;
}

.publication-meta span {
  margin-top: 2px;
  color: var(--accent);
  font-size: 0.65rem;
  font-weight: 800;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.publication-item h2,
.research-body h2 {
  max-width: 760px;
  margin: 0 0 10px;
  color: var(--navy);
  font-family: var(--serif);
  font-size: 1.34rem;
  font-weight: 600;
  line-height: 1.38;
}

.authors,
.venue {
  margin: 4px 0;
  color: var(--muted);
  font-size: 0.88rem;
}

.item-links {
  margin: 12px 0 0;
  display: flex;
  gap: 16px;
}

.item-links a {
  font-size: 0.76rem;
  font-weight: 750;
  text-decoration: none;
}

.research-item {
  padding: 38px 0;
  display: grid;
  grid-template-columns: 175px 1fr;
  gap: 42px;
  border-bottom: 1px solid var(--line);
}

.research-side time,
.research-side span {
  display: block;
}

.research-side time {
  color: var(--navy);
  font-family: var(--serif);
  font-size: 0.94rem;
}

.research-side span {
  color: var(--muted);
  font-size: 0.72rem;
}

.research-body .supervisor {
  margin: -3px 0 15px;
  color: var(--muted);
  font-size: 0.8rem;
  font-style: italic;
}

.research-body ul {
  margin: 0;
  padding-left: 20px;
  color: #465a6d;
  font-size: 0.91rem;
}

.research-body li + li {
  margin-top: 5px;
}

.tag-line {
  margin: 15px 0 0;
  color: var(--accent);
  font-size: 0.72rem;
  font-weight: 700;
}

.background-section {
  padding: 34px 0 42px;
  border-top: 1px solid var(--line);
}

.background-section > h2 {
  margin: 0 0 25px;
  color: var(--navy);
  font-family: var(--serif);
  font-size: 1.35rem;
  font-weight: 600;
}

.education-item {
  padding: 0 0 27px;
  display: grid;
  grid-template-columns: 195px 1fr;
  gap: 36px;
}

.education-item:last-child {
  padding-bottom: 0;
}

.education-item time {
  color: var(--muted);
  font-family: var(--serif);
  font-size: 0.88rem;
}

.education-item h3 {
  margin: 0 0 2px;
  color: var(--navy);
  font-family: var(--serif);
  font-size: 1.12rem;
  font-weight: 600;
}

.education-item p {
  margin: 1px 0;
  color: #465a6d;
  font-size: 0.88rem;
}

.education-item .detail {
  color: var(--muted);
  font-size: 0.78rem;
}

.background-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 54px;
}

.fact-list {
  margin: 0;
}

.fact-list > div {
  padding: 9px 0;
  display: grid;
  grid-template-columns: 105px 1fr;
  border-bottom: 1px solid var(--line);
}

.fact-list dt {
  color: var(--navy);
  font-size: 0.78rem;
  font-weight: 750;
}

.fact-list dd {
  margin: 0;
  color: var(--muted);
  font-size: 0.82rem;
}

.honor-list {
  margin: 0;
  padding-left: 19px;
  color: var(--muted);
  font-size: 0.88rem;
}

.honor-list li + li {
  margin-top: 8px;
}

.site-footer {
  width: min(calc(100% - 40px), var(--content));
  margin: 35px auto 0;
  padding: 25px 0 42px;
  display: flex;
  justify-content: space-between;
  gap: 24px;
  border-top: 1px solid var(--line);
  color: var(--muted);
  font-size: 0.73rem;
}

.site-footer p {
  margin: 0;
}

.site-footer a {
  text-decoration: none;
}

@media (max-width: 760px) {
  .menu-toggle {
    display: block;
  }

  .menu-toggle[aria-expanded="true"] > span:nth-child(1) {
    transform: translateY(7px) rotate(45deg);
  }

  .menu-toggle[aria-expanded="true"] > span:nth-child(2) {
    opacity: 0;
  }

  .menu-toggle[aria-expanded="true"] > span:nth-child(3) {
    transform: translateY(-7px) rotate(-45deg);
  }

  .site-nav {
    position: absolute;
    top: 68px;
    right: 0;
    left: 0;
    display: none;
    padding: 19px 20px 23px;
    flex-direction: column;
    align-items: flex-start;
    gap: 15px;
    border-bottom: 1px solid var(--line);
    background: var(--paper);
  }

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

  .site-nav a[aria-current="page"]::after {
    display: none;
  }

  .intro-section {
    padding-top: 56px;
    grid-template-columns: 150px minmax(0, 1fr);
    gap: 34px;
  }

  .profile-photo,
  .profile-links {
    width: 145px;
  }

  .profile-photo {
    height: 181px;
  }

  .home-section {
    grid-template-columns: 150px 1fr;
    gap: 34px;
  }

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

  .background-grid {
    grid-template-columns: 1fr;
    gap: 0;
  }
}

@media (max-width: 560px) {
  .nav-shell,
  .site-main,
  .site-footer {
    width: min(calc(100% - 30px), var(--content));
  }

  .intro-section {
    padding: 46px 0 52px;
    grid-template-columns: 1fr;
    gap: 29px;
  }

  .portrait-column {
    display: flex;
    gap: 17px;
    align-items: end;
  }

  .profile-photo {
    width: 112px;
    height: 140px;
  }

  .profile-links {
    width: auto;
    margin-bottom: 2px;
    flex-direction: column;
    gap: 2px;
  }

  .intro-copy h1,
  .page-header h1 {
    font-size: 3.05rem;
  }

  .role {
    font-size: 1.12rem;
  }

  .home-section {
    grid-template-columns: 1fr;
    gap: 20px;
  }

  .news-row,
  .publication-item,
  .research-item,
  .education-item {
    grid-template-columns: 1fr;
    gap: 9px;
  }

  .page-header {
    padding: 52px 0 38px;
  }

  .publication-item,
  .research-item {
    padding: 27px 0;
  }

  .site-footer {
    display: block;
  }

  .site-footer p + p {
    margin-top: 5px;
  }
}

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

  *,
  *::before,
  *::after {
    transition-duration: 0.01ms !important;
  }
}