:root {
  --navy: #082b45;
  --ink: #102a3a;
  --blue: #4d829d;
  --ivory: #f4f0e7;
  --paper: #fcfaf5;
  --rule: #c8d2d2;
  --mist: #e8efef;
  --white: #ffffff;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  scroll-padding-top: 90px;
}

body {
  --serif: Georgia, Georgia, "Times New Roman", serif;
  --sans: Arial, Arial, Helvetica, sans-serif;
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--sans);
  font-size: 16px;
  line-height: 1.7;
  text-rendering: optimizeLegibility;
}

a {
  color: inherit;
  text-underline-offset: 0.2em;
}

a:focus-visible {
  outline: 3px solid #6ab2d4;
  outline-offset: 4px;
}

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

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

.site-header {
  align-items: center;
  background: rgb(252 250 245 / 94%);
  border-bottom: 1px solid rgb(16 42 58 / 10%);
  display: flex;
  height: 88px;
  justify-content: space-between;
  padding: 0 clamp(24px, 4vw, 64px);
  position: sticky;
  top: 0;
  z-index: 20;
  backdrop-filter: blur(14px);
}

.wordmark {
  color: var(--navy);
  font-family: var(--serif);
  font-size: 1.62rem;
  font-weight: 600;
  letter-spacing: 0.16em;
  line-height: 1;
  text-decoration: none;
  text-transform: uppercase;
  white-space: nowrap;
}

.site-nav {
  align-items: center;
  display: flex;
  gap: clamp(18px, 2.8vw, 44px);
}

.site-nav a {
  color: var(--ink);
  font-size: 0.91rem;
  font-weight: 500;
  padding: 12px 0 8px;
  position: relative;
  text-decoration: none;
}

.site-nav a::after {
  background: var(--blue);
  bottom: 3px;
  content: "";
  height: 1px;
  left: 0;
  position: absolute;
  transform: scaleX(0);
  transform-origin: right;
  transition: transform 180ms ease;
  width: 100%;
}

.site-nav a:hover::after,
.site-nav a:focus-visible::after {
  transform: scaleX(1);
  transform-origin: left;
}

.hero {
  background: var(--ivory);
  display: grid;
  grid-template-columns: minmax(440px, 47%) 1fr;
  min-height: calc(100vh - 88px);
}

.hero-copy {
  align-self: center;
  max-width: 690px;
  padding: clamp(72px, 8vw, 128px) clamp(36px, 5vw, 78px) 64px;
}

.eyebrow,
.section-index {
  color: var(--blue);
  font-size: 0.78rem;
  font-weight: 600;
  letter-spacing: 0.17em;
  margin-bottom: 20px;
  text-transform: uppercase;
}

.hero h1 {
  color: var(--navy);
  font-family: var(--serif);
  font-size: clamp(4.3rem, 6.8vw, 7.2rem);
  font-weight: 500;
  letter-spacing: -0.055em;
  line-height: 0.86;
  margin-bottom: 20px;
  white-space: nowrap;
}

.hero-role {
  color: var(--blue);
  font-size: 0.82rem;
  font-weight: 600;
  letter-spacing: 0.16em;
  margin-bottom: 20px;
  text-transform: uppercase;
}

.affiliation {
  font-size: clamp(1.04rem, 1.45vw, 1.35rem);
  font-weight: 500;
  line-height: 1.42;
}

.affiliation p {
  margin-bottom: 0;
}

.hero-rule {
  background: var(--blue);
  height: 1px;
  margin: 44px 0 26px;
  width: 112px;
}

.hero-focus {
  color: var(--navy);
  font-size: clamp(0.88rem, 1.15vw, 1.05rem);
  font-weight: 600;
  letter-spacing: 0.015em;
  line-height: 1.75;
  margin-bottom: 32px;
  max-width: 590px;
}

.hero-actions {
  align-items: center;
  display: flex;
  gap: 30px;
}

.button {
  align-items: center;
  display: inline-flex;
  font-size: 0.94rem;
  font-weight: 600;
  justify-content: center;
  min-height: 50px;
  padding: 0 28px;
  text-decoration: none;
  transition: background 180ms ease, color 180ms ease, transform 180ms ease;
}

.button:hover {
  transform: translateY(-2px);
}

.button-primary {
  background: var(--navy);
  color: var(--white);
}

.button-primary:hover {
  background: #0e3d5e;
}

.button-text {
  border-bottom: 1px solid var(--blue);
  color: var(--navy);
  padding-left: 0;
  padding-right: 0;
}

.button-text span {
  margin-left: 30px;
  transition: transform 180ms ease;
}

.button-text:hover span {
  transform: translateX(4px);
}

.update-note {
  border-left: 1px solid var(--rule);
  color: #526672;
  font-size: 0.76rem;
  line-height: 1.55;
  margin: 54px 0 0;
  max-width: 520px;
  padding-left: 14px;
}

.hero-image {
  margin: 0;
  min-height: 640px;
  overflow: hidden;
  position: relative;
}

.hero-image::after {
  background: linear-gradient(90deg, rgb(8 43 69 / 10%), transparent 35%);
  content: "";
  inset: 0;
  pointer-events: none;
  position: absolute;
}

.hero-image img {
  height: 100%;
  object-fit: cover;
  transition: transform 1.2s ease;
  width: 100%;
}

.hero-image:hover img {
  transform: scale(1.015);
}

.hero-image figcaption {
  bottom: 26px;
  color: var(--white);
  font-size: 0.7rem;
  font-weight: 600;
  letter-spacing: 0.16em;
  position: absolute;
  right: 30px;
  text-transform: uppercase;
  writing-mode: vertical-rl;
  z-index: 1;
}

.section {
  margin: 0 auto;
  max-width: 1440px;
  padding: clamp(90px, 10vw, 150px) clamp(24px, 6vw, 96px);
}

.section-heading {
  border-top: 1px solid var(--rule);
  display: grid;
  gap: 20px;
  grid-template-columns: minmax(160px, 0.45fr) 1fr;
  margin-bottom: clamp(60px, 7vw, 100px);
  padding-top: 22px;
}

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

.section-heading h2 {
  color: var(--navy);
  font-family: var(--serif);
  font-size: clamp(3.8rem, 7vw, 7.2rem);
  font-weight: 500;
  letter-spacing: -0.045em;
  line-height: 0.86;
  margin: 0;
}

.section-heading.light {
  border-color: rgb(255 255 255 / 28%);
}

.section-heading.light h2 {
  color: var(--white);
}

.section-heading.light .section-index {
  color: #9cc7d8;
}

.about-section {
  background: var(--paper);
}

.about-grid {
  align-items: start;
  display: grid;
  gap: clamp(44px, 7vw, 105px);
  grid-template-columns: minmax(260px, 0.72fr) 1.55fr;
}

.profile-card {
  background: var(--mist);
  position: sticky;
  top: 118px;
}

.profile-card img {
  aspect-ratio: 4 / 3;
  object-fit: cover;
  width: 100%;
}

.profile-card div {
  padding: 28px 30px 32px;
}

.profile-card h3 {
  color: var(--navy);
  font-family: var(--serif);
  font-size: 2rem;
  font-weight: 600;
  margin-bottom: 16px;
}

.profile-card p {
  color: #48606e;
  font-size: 0.86rem;
  margin-bottom: 8px;
}

.prose {
  font-family: var(--serif);
  font-size: clamp(1.18rem, 1.55vw, 1.4rem);
  line-height: 1.78;
}

.prose p {
  margin-bottom: 1.55em;
}

.prose a {
  color: #285f7d;
  text-decoration-color: rgb(40 95 125 / 45%);
}

.prose a:hover {
  color: var(--navy);
  text-decoration-color: currentColor;
}

.research-intro,
.gallery-section {
  background: var(--navy);
  color: #dbe7eb;
  padding: clamp(90px, 10vw, 150px) max(clamp(24px, 6vw, 96px), calc((100vw - 1248px) / 2));
}

.research-lede {
  font-family: var(--serif);
  font-size: clamp(1.55rem, 2.8vw, 2.65rem);
  line-height: 1.48;
  margin: 0 0 48px auto;
  max-width: 980px;
}

.research-overview {
  margin: 0 auto 72px;
  max-width: 1248px;
}

.research-overview-image {
  background: #f4f4f4;
  overflow: hidden;
  position: relative;
}

.research-overview img {
  display: block;
  height: auto;
  width: 100%;
}

.research-overview figcaption {
  color: rgb(219 231 235 / 78%);
  font-size: 0.78rem;
  line-height: 1.55;
  margin-top: 12px;
}

.figure-hotspot {
  border: 2px solid transparent;
  border-radius: 8px;
  position: absolute;
  transition: background 160ms ease, border-color 160ms ease, box-shadow 160ms ease;
}

.figure-hotspot:hover,
.figure-hotspot:focus-visible {
  background: rgb(255 255 255 / 22%);
  border-color: #fff;
  box-shadow: 0 0 0 3px rgb(18 61 94 / 45%);
  outline: none;
}

.research-mobile-links {
  display: none;
  gap: 8px;
  margin-top: 18px;
}

.research-mobile-links p {
  color: #b8d3df;
  font-size: 0.76rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  margin: 0 0 4px;
  text-transform: uppercase;
}

.research-mobile-links a {
  align-items: center;
  border: 1px solid rgb(255 255 255 / 28%);
  display: flex;
  font-family: var(--serif);
  font-size: 1.08rem;
  min-height: 48px;
  padding: 10px 14px;
  text-decoration: none;
  touch-action: manipulation;
}

.research-mobile-links a:active,
.research-mobile-links a:focus-visible {
  background: rgb(255 255 255 / 12%);
}

.hotspot-wind {
  height: 11.5%;
  left: 32.8%;
  top: 23.1%;
  width: 6.2%;
}

.hotspot-roller {
  height: 3.5%;
  left: 39.8%;
  top: 51.4%;
  width: 6.0%;
}

.hotspot-turbulence {
  height: 3.5%;
  left: 42.5%;
  top: 61.7%;
  width: 8.1%;
}

.hotspot-undertow {
  height: 3.5%;
  left: 34.7%;
  top: 64.8%;
  width: 8.7%;
}

.hotspot-eddies {
  height: 5%;
  left: 57.5%;
  top: 60%;
  width: 12%;
}

.research-nav {
  border-bottom: 1px solid rgb(255 255 255 / 22%);
  display: grid;
  grid-template-columns: repeat(4, 1fr);
}

.research-nav a {
  border-left: 1px solid rgb(255 255 255 / 22%);
  display: flex;
  flex-direction: column;
  justify-content: center;
  font-family: var(--serif);
  font-size: 1.2rem;
  min-height: 112px;
  padding: 24px 22px;
  text-decoration: none;
  transition: background 180ms ease, color 180ms ease;
}

.research-nav a:last-child {
  border-right: 1px solid rgb(255 255 255 / 22%);
}

.research-nav a:hover {
  background: rgb(255 255 255 / 8%);
  color: var(--white);
}

.research-nav span {
  display: none;
}

.research-list {
  background: var(--paper);
}

.research-item {
  border-bottom: 1px solid var(--rule);
  display: grid;
  gap: 38px clamp(38px, 6vw, 92px);
  grid-template-columns: minmax(270px, 0.75fr) 1.7fr;
  margin: 0 auto;
  max-width: 1440px;
  padding: clamp(90px, 9vw, 138px) clamp(24px, 6vw, 96px);
}

.research-item-heading {
  position: sticky;
  align-self: start;
  top: 118px;
}

.research-item-heading span {
  display: none;
}

.research-item-heading h3 {
  color: var(--navy);
  font-family: var(--serif);
  font-size: clamp(2.5rem, 4vw, 4.4rem);
  font-weight: 500;
  letter-spacing: -0.035em;
  line-height: 1.02;
  margin: 0;
}

.research-copy {
  max-width: 850px;
}

.research-images,
.related-publication {
  grid-column: 2;
}

.research-images {
  display: grid;
  gap: 24px;
  grid-template-columns: repeat(2, 1fr);
}

.research-images figure {
  background: var(--mist);
  margin: 0;
}

.research-images img {
  aspect-ratio: 4 / 3;
  object-fit: cover;
  width: 100%;
}

.research-images figcaption {
  color: #435b68;
  font-size: 0.77rem;
  line-height: 1.55;
  padding: 18px 20px 20px;
}

.related-publication {
  border-left: 3px solid var(--blue);
  font-family: var(--serif);
  font-size: 1.05rem;
  margin: 0;
  max-width: 850px;
  padding: 4px 0 4px 22px;
}

.related-publication span {
  color: var(--blue);
  display: block;
  font-family: var(--sans);
  font-size: 0.68rem;
  font-weight: 700;
  letter-spacing: 0.16em;
  margin-bottom: 8px;
  text-transform: uppercase;
}

.publications-section {
  background: var(--ivory);
}

.publication-groups {
  margin-left: min(31vw, 365px);
}

.publication-groups article {
  border-top: 1px solid var(--rule);
  display: grid;
  gap: 30px;
  grid-template-columns: minmax(170px, 0.45fr) 1.3fr;
  padding: 34px 0 40px;
}

.publication-groups h3 {
  color: var(--navy);
  font-family: var(--serif);
  font-size: 1.55rem;
  font-weight: 600;
  line-height: 1.2;
  margin: 0;
}

.publication-groups ol {
  margin: 0;
  padding-left: 1.6rem;
}

.publication-groups li {
  line-height: 1.72;
  margin-bottom: 28px;
  padding-left: 12px;
}

.publication-groups li:last-child {
  margin-bottom: 0;
}

.gallery-grid {
  display: grid;
  gap: 12px;
  grid-auto-rows: 250px;
  grid-template-columns: repeat(12, 1fr);
}

.gallery-grid figure {
  margin: 0;
  overflow: hidden;
}

.gallery-grid figure:nth-child(1),
.gallery-grid figure:nth-child(4) {
  grid-column: span 7;
}

.gallery-grid figure:nth-child(2),
.gallery-grid figure:nth-child(3) {
  grid-column: span 5;
}

.gallery-grid figure:nth-child(5),
.gallery-grid figure:nth-child(6) {
  grid-column: span 6;
}

.gallery-grid img {
  height: 100%;
  object-fit: cover;
  transition: filter 300ms ease, transform 500ms ease;
  width: 100%;
}

.gallery-grid figure:hover img {
  filter: saturate(0.92) contrast(1.04);
  transform: scale(1.025);
}

.site-footer {
  background: #061d2e;
  color: #d4e0e5;
  display: grid;
  gap: 48px;
  grid-template-columns: 1fr 1.25fr 0.75fr;
  padding: clamp(70px, 8vw, 112px) max(clamp(24px, 6vw, 96px), calc((100vw - 1248px) / 2)) 38px;
}

.site-footer h2 {
  color: var(--white);
  font-family: var(--serif);
  font-size: clamp(3.3rem, 5vw, 5.4rem);
  font-weight: 500;
  line-height: 0.9;
  margin: 0;
}

.site-footer address {
  font-style: normal;
  padding-top: 34px;
}

.site-footer address p {
  margin: 0;
}

.site-footer address a {
  color: var(--white);
  display: inline-block;
  margin-top: 16px;
}

.social-links {
  display: flex;
  flex-direction: column;
  gap: 8px;
  padding-top: 34px;
}

.social-links a,
.footer-bottom a {
  color: #b8d3df;
}

.footer-bottom {
  border-top: 1px solid rgb(255 255 255 / 18%);
  color: #8ea8b5;
  display: flex;
  font-size: 0.76rem;
  gap: 20px;
  grid-column: 1 / -1;
  justify-content: space-between;
  margin-top: 32px;
  padding-top: 22px;
}

.footer-bottom p {
  margin: 0;
}

@media (max-width: 980px) {
  .site-header {
    align-items: flex-start;
    flex-direction: column;
    gap: 9px;
    height: auto;
    padding-bottom: 12px;
    padding-top: 18px;
  }

  .site-nav {
    gap: 24px;
    max-width: 100%;
    overflow-x: auto;
    padding-bottom: 2px;
    width: 100%;
  }

  .site-nav a {
    flex: 0 0 auto;
    font-size: 0.82rem;
  }

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

  .hero-copy {
    max-width: 760px;
  }

  .hero-image {
    min-height: 52vw;
  }

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

  .profile-card,
  .research-item-heading {
    position: static;
  }

  .profile-card {
    display: grid;
    grid-template-columns: minmax(200px, 0.7fr) 1fr;
  }

  .profile-card img {
    height: 100%;
  }

  .research-images,
  .related-publication {
    grid-column: 1;
  }

  .research-nav {
    grid-template-columns: repeat(2, 1fr);
  }

  .publication-groups {
    margin-left: 0;
  }
}

@media (max-width: 680px) {
  html {
    scroll-padding-top: 150px;
  }

  .site-header {
    align-items: stretch;
  }

  .site-nav {
    display: grid;
    gap: 0 12px;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    overflow-x: visible;
  }

  .site-nav a {
    align-items: center;
    display: flex;
    justify-content: center;
    min-height: 42px;
    padding: 8px 0 5px;
    text-align: center;
  }

  .wordmark {
    font-size: 1.3rem;
  }

  .hero-copy {
    padding: 72px 24px 54px;
  }

  .hero h1 {
    font-size: clamp(3.25rem, 17vw, 5.7rem);
    line-height: 0.85;
  }

  .hero-image {
    min-height: 78vw;
  }

  .section-heading {
    grid-template-columns: 1fr;
  }

  .section-heading h2 {
    font-size: clamp(2.75rem, 15vw, 4rem);
  }

  .about-grid {
    gap: 42px;
  }

  .profile-card {
    display: block;
  }

  .prose {
    font-size: 1.1rem;
    line-height: 1.68;
  }

  .research-lede {
    font-size: 1.55rem;
  }

  .research-overview {
    margin-bottom: 54px;
  }

  .research-overview figcaption {
    font-size: 0.72rem;
  }

  .figure-hotspot {
    display: none;
  }

  .research-mobile-links {
    display: grid;
  }

  .research-nav {
    display: none;
  }

  .research-nav a,
  .research-nav a:last-child {
    border-left: 0;
    border-right: 0;
    border-top: 1px solid rgb(255 255 255 / 22%);
    min-height: 0;
  }

  .research-nav span {
    margin-bottom: 10px;
  }

  .research-item {
    padding-bottom: 88px;
    padding-top: 88px;
  }

  .research-item-heading h3 {
    font-size: clamp(2.1rem, 10vw, 2.5rem);
  }

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

  .publication-groups article {
    grid-template-columns: 1fr;
  }

  .gallery-grid {
    display: grid;
    grid-auto-rows: 66vw;
    grid-template-columns: 1fr;
  }

  .gallery-grid figure:nth-child(n) {
    grid-column: 1;
  }

  .site-footer {
    grid-template-columns: 1fr;
  }

  .site-footer address,
  .social-links {
    padding-top: 0;
  }

  .footer-bottom {
    align-items: flex-start;
    flex-direction: column;
  }
}

@media (hover: none) and (pointer: coarse) {
  .figure-hotspot {
    display: none;
  }

  .research-mobile-links {
    display: grid;
  }

  .research-nav {
    display: none;
  }
}

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

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