:root {
  --ink: #17212b;
  --muted: #5d6874;
  --navy: #17324d;
  --navy-soft: #274f70;
  --accent: #a86135;
  --paper: #fbfaf7;
  --surface: #f1eee7;
  --surface-light: #f6f4ef;
  --line: #d8d3c9;
  --white: #ffffff;
  --shadow: 0 22px 60px rgba(23, 33, 43, 0.12);
  --sans: Inter, ui-sans-serif, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  --serif: Georgia, "Times New Roman", serif;
}

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

html {
  scroll-behavior: smooth;
}

body {
  min-width: 320px;
  min-height: 100vh;
  margin: 0;
  display: flex;
  flex-direction: column;
  color: var(--ink);
  background: var(--paper);
  font-family: var(--sans);
  font-size: 17px;
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}

main {
  flex: 1;
}

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

a {
  color: var(--navy-soft);
  text-decoration-thickness: 1px;
  text-underline-offset: 0.22em;
}

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

a:focus-visible,
summary:focus-visible {
  outline: 3px solid rgba(168, 97, 53, 0.45);
  outline-offset: 4px;
}

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

h1,
h2 {
  color: var(--navy);
  font-family: var(--serif);
  font-weight: 500;
  letter-spacing: -0.035em;
  line-height: 1.08;
}

h1 {
  margin-bottom: 0.28em;
  font-size: clamp(3rem, 7vw, 5.9rem);
}

h2 {
  margin-bottom: 0.65em;
  font-size: clamp(2rem, 4vw, 3.25rem);
}

h3 {
  color: var(--navy);
  font-size: 0.82rem;
  letter-spacing: 0.13em;
  line-height: 1.4;
  text-transform: uppercase;
}

.container {
  width: min(1120px, calc(100% - 48px));
  margin-inline: auto;
}

.research-width {
  width: min(900px, calc(100% - 48px));
}

.skip-link {
  position: fixed;
  z-index: 100;
  top: 12px;
  left: 12px;
  padding: 10px 14px;
  transform: translateY(-160%);
  color: var(--white);
  background: var(--navy);
  border-radius: 4px;
}

.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;
  background: rgba(251, 250, 247, 0.94);
  border-bottom: 1px solid rgba(216, 211, 201, 0.78);
  backdrop-filter: blur(14px);
}

.header-inner {
  min-height: 96px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 36px;
}

.site-identity {
  display: inline-flex;
  flex-direction: column;
  color: var(--navy);
  text-decoration: none;
}

.site-identity:hover {
  color: var(--navy);
}

.site-name {
  font-family: var(--serif);
  font-size: 1.42rem;
  line-height: 1.2;
}

.site-role {
  color: var(--muted);
  font-size: 0.74rem;
  letter-spacing: 0.11em;
  text-transform: uppercase;
}

.site-nav ul {
  display: flex;
  align-items: center;
  gap: clamp(20px, 3vw, 38px);
  margin: 0;
  padding: 0;
  list-style: none;
}

.site-nav a {
  position: relative;
  display: block;
  padding-block: 10px;
  color: var(--ink);
  font-size: 0.8rem;
  font-weight: 650;
  letter-spacing: 0.12em;
  text-decoration: none;
  text-transform: uppercase;
}

.site-nav a::after {
  position: absolute;
  right: 0;
  bottom: 4px;
  left: 0;
  height: 2px;
  content: "";
  transform: scaleX(0);
  transform-origin: right;
  background: var(--accent);
  transition: transform 180ms ease;
}

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

.site-nav a:hover::after,
.site-nav a[aria-current="page"]::after {
  transform: scaleX(1);
  transform-origin: left;
}

.hero {
  min-height: calc(100vh - 96px);
  padding-block: clamp(64px, 9vw, 120px);
  display: grid;
  grid-template-columns: minmax(340px, 410px) minmax(0, 1fr);
  align-items: center;
  gap: clamp(48px, 8vw, 110px);
}

.portrait-frame {
  position: relative;
  width: min(100%, 410px);
  aspect-ratio: auto;
  align-self: stretch;
  display: grid;
  justify-self: center;
  place-items: center;
  background: var(--surface);
  box-shadow: var(--shadow);
}

.portrait-frame::before {
  position: absolute;
  z-index: -1;
  top: 22px;
  right: -22px;
  width: 100%;
  height: 100%;
  content: "";
  background: var(--surface);
  border: 1px solid var(--line);
}

.portrait-frame img {
  position: absolute;
  top: 50%;
  left: 50%;
  width: 95%;
  height: 95%;
  transform: translate(-50%, -50%);
  object-fit: contain;
  object-position: center;
}

.eyebrow,
.paper-status,
.contact-label {
  margin-bottom: 14px;
  color: var(--accent);
  font-size: 0.75rem;
  font-weight: 750;
  letter-spacing: 0.16em;
  line-height: 1.4;
  text-transform: uppercase;
}

.hero h1 {
  font-size: clamp(2.75rem, 5.5vw, 4.7rem);
}

.hero-affiliation {
  margin-bottom: 28px;
  color: var(--navy-soft);
  font-family: var(--serif);
  font-size: clamp(1.18rem, 2.2vw, 1.45rem);
}

.hero-introduction {
  max-width: 720px;
  margin-bottom: 16px;
  color: #3f4a55;
  font-size: clamp(1.02rem, 1.5vw, 1.14rem);
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-top: 34px;
}

.button {
  display: inline-flex;
  min-height: 49px;
  padding: 10px 22px;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--navy);
  color: var(--navy);
  font-size: 0.82rem;
  font-weight: 700;
  letter-spacing: 0.09em;
  text-decoration: none;
  text-transform: uppercase;
  transition: color 160ms ease, background-color 160ms ease, transform 160ms ease;
}

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

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

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

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

.home-section {
  padding-block: clamp(72px, 9vw, 120px);
}

.section-tint {
  background: var(--surface);
  border-block: 1px solid var(--line);
}

.narrow-section {
  max-width: 860px;
  margin-inline: auto;
  text-align: center;
}

.narrow-section h2 {
  max-width: 760px;
  margin-inline: auto;
}

.section-lead {
  max-width: 690px;
  margin: 0 auto 24px;
  color: var(--muted);
  font-size: 1.08rem;
}

.text-link {
  display: inline-block;
  color: var(--navy);
  font-weight: 700;
  text-decoration-color: var(--accent);
}

.section-heading-row {
  display: grid;
  grid-template-columns: minmax(250px, 0.75fr) minmax(0, 1fr);
  align-items: end;
  gap: clamp(30px, 8vw, 100px);
}

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

.section-heading-row > p {
  margin-bottom: 6px;
  color: var(--muted);
}

.topic-list {
  margin: 52px 0 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  border-block: 1px solid var(--line);
  list-style: none;
}

.topic-list li {
  min-height: 118px;
  padding: 20px 18px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--navy);
  font-family: var(--serif);
  font-size: 1.08rem;
  line-height: 1.35;
  text-align: center;
}

.topic-list li + li {
  border-left: 1px solid var(--line);
}

.page-main {
  padding-bottom: clamp(80px, 10vw, 140px);
}

.page-intro {
  padding-block: clamp(70px, 9vw, 120px) clamp(42px, 6vw, 72px);
}

.page-intro h1,
.contact-intro h1 {
  font-size: clamp(3rem, 7vw, 5rem);
}

.page-intro > p:last-child {
  max-width: 720px;
  margin-bottom: 0;
  color: var(--muted);
  font-size: 1.1rem;
}

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

.paper {
  padding-block: clamp(46px, 7vw, 78px);
  border-bottom: 1px solid var(--line);
  scroll-margin-top: 120px;
}

.paper-featured {
  margin-inline: clamp(-32px, -3vw, -18px);
  padding-inline: clamp(18px, 3vw, 32px);
  background: var(--surface-light);
  border-top: 4px solid var(--accent);
}

.paper-heading {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 30px;
}

.paper h2 {
  max-width: 760px;
  margin-bottom: 14px;
  font-size: clamp(1.85rem, 4.3vw, 3rem);
}

.paper h2 em {
  white-space: nowrap;
}

.paper-number {
  color: #bbb5ab;
  font-family: var(--serif);
  font-size: 1rem;
}

.coauthors {
  margin-bottom: 0;
  color: var(--muted);
  font-family: var(--serif);
  font-size: 1.05rem;
  font-style: italic;
}

.paper-links {
  margin: 20px 0 0;
}

.paper-summary {
  max-width: 700px;
  margin: 30px 0 0;
  color: var(--muted);
  font-size: 1.07rem;
}

.abstract {
  max-width: 760px;
  margin-top: 34px;
  padding-left: 24px;
  border-left: 2px solid var(--line);
}

.abstract h3 {
  margin-bottom: 12px;
}

.abstract p {
  margin-bottom: 0;
  color: #48535e;
  font-size: 0.97rem;
  line-height: 1.82;
  text-align: left;
}

.contact-layout {
  min-height: calc(100vh - 270px);
  padding-block: clamp(70px, 10vw, 130px);
  display: grid;
  grid-template-columns: minmax(0, 0.9fr) minmax(340px, 0.75fr);
  align-items: start;
  gap: clamp(48px, 10vw, 130px);
}

.contact-intro > p:last-child {
  max-width: 620px;
  color: var(--muted);
  font-size: 1.1rem;
}

.contact-card {
  padding: clamp(28px, 5vw, 48px);
  background: var(--surface);
  border-top: 4px solid var(--accent);
}

.contact-item + .contact-item {
  margin-top: 28px;
  padding-top: 28px;
  border-top: 1px solid var(--line);
}

.contact-item p {
  margin-bottom: 0;
}

.contact-item a {
  overflow-wrap: anywhere;
  color: var(--navy);
  font-weight: 700;
}

.contact-label {
  margin-bottom: 7px !important;
}

.site-footer {
  color: rgba(255, 255, 255, 0.76);
  background: var(--navy);
}

.footer-inner {
  min-height: 118px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 30px;
}

.footer-inner p {
  margin-bottom: 0;
  font-size: 0.88rem;
}

.footer-links {
  display: flex;
  gap: 24px;
}

.footer-links a {
  color: var(--white);
  font-size: 0.82rem;
  font-weight: 650;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

@media (max-width: 860px) {
  .hero {
    grid-template-columns: minmax(220px, 0.65fr) minmax(0, 1fr);
    gap: 54px;
  }

  .portrait-frame {
    width: min(100%, 340px);
    aspect-ratio: 4 / 5;
    align-self: center;
  }

  .topic-list {
    grid-template-columns: repeat(3, 1fr);
  }

  .topic-list li + li {
    border-left: 0;
  }

  .topic-list li:nth-child(2),
  .topic-list li:nth-child(3),
  .topic-list li:nth-child(5) {
    border-left: 1px solid var(--line);
  }

  .topic-list li:nth-child(n + 4) {
    border-top: 1px solid var(--line);
  }
}

@media (max-width: 700px) {
  body {
    font-size: 16px;
  }

  .container,
  .research-width {
    width: min(100% - 36px, 1120px);
  }

  .header-inner {
    min-height: auto;
    padding-block: 17px 12px;
    flex-direction: column;
    align-items: flex-start;
    gap: 10px;
  }

  .site-role {
    display: none;
  }

  .site-nav {
    width: 100%;
  }

  .site-nav ul {
    justify-content: space-between;
  }

  .site-nav a {
    padding-block: 8px;
    font-size: 0.72rem;
  }

  .hero {
    min-height: auto;
    grid-template-columns: 1fr;
    gap: 54px;
  }

  .hero-copy {
    order: -1;
  }

  .portrait-frame {
    width: min(78%, 320px);
    aspect-ratio: 4 / 5;
    align-self: center;
    margin-inline: auto;
  }

  .section-heading-row,
  .contact-layout {
    grid-template-columns: 1fr;
  }

  .section-heading-row {
    align-items: start;
  }

  .contact-layout {
    gap: 42px;
  }

  .paper-featured {
    margin-inline: 0;
  }

  .footer-inner {
    padding-block: 28px;
    flex-direction: column;
    align-items: flex-start;
    gap: 12px;
  }
}

@media (max-width: 500px) {
  .hero-actions {
    align-items: stretch;
    flex-direction: column;
  }

  .button {
    width: 100%;
  }

  .topic-list {
    grid-template-columns: 1fr;
  }

  .topic-list li,
  .topic-list li:nth-child(2),
  .topic-list li:nth-child(3),
  .topic-list li:nth-child(5),
  .topic-list li:nth-child(n + 4) {
    min-height: 76px;
    border-top: 1px solid var(--line);
    border-left: 0;
  }

  .topic-list li:first-child {
    border-top: 0;
  }

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

  .paper-number {
    display: none;
  }

  .abstract {
    padding-left: 16px;
  }

  .paper h2 em {
    white-space: normal;
  }
}

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

  *,
  *::before,
  *::after {
    transition-duration: 0.01ms !important;
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
  }
}

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

  body {
    color: #000;
    background: #fff;
    font-size: 11pt;
  }

  .paper,
  .paper-featured {
    break-inside: avoid;
    background: transparent;
  }
}