:root {
  --paper: #f7f7f4;
  --paper-deep: #ecefeb;
  --surface: #fcfcfa;
  --ink: #25292e;
  --ink-soft: #60676e;
  --line: #d9ddda;
  --blue: #607d96;
  --blue-dark: #49677f;
  --blue-light: #edf2f4;
  --white: #fff;
  --serif: "Iowan Old Style", "Palatino Linotype", Palatino, Baskerville, Georgia, serif;
  --sans: "Avenir Next", Avenir, "Helvetica Neue", "Segoe UI", Arial, sans-serif;
  --shell: min(1180px, calc(100vw - 64px));
  --header-height: 84px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  scroll-padding-top: calc(var(--header-height) + 24px);
}

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--sans);
  font-size: 16px;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}

body::before { content: none; }

::selection {
  background: var(--blue);
  color: var(--white);
}

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

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

button,
a {
  -webkit-tap-highlight-color: transparent;
}

.skip-link {
  position: fixed;
  z-index: 100;
  top: 12px;
  left: 12px;
  padding: 10px 16px;
  transform: translateY(-150%);
  border-radius: 4px;
  background: var(--ink);
  color: var(--white);
}

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

.shell {
  width: var(--shell);
  margin-inline: auto;
}

.site-header {
  position: sticky;
  z-index: 50;
  top: 0;
  display: flex;
  width: 100%;
  height: var(--header-height);
  align-items: center;
  justify-content: space-between;
  padding: 0 max(32px, calc((100vw - 1180px) / 2));
  border-bottom: 1px solid transparent;
  background: rgba(247, 247, 244, 0.94);
  backdrop-filter: blur(18px);
  transition: border-color 180ms ease, height 180ms ease;
}

.site-header.is-scrolled {
  height: 70px;
  border-color: var(--line);
}

.wordmark {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  color: var(--ink);
  font-size: 15px;
  font-weight: 650;
  letter-spacing: -0.01em;
  text-decoration: none;
}

.wordmark-mark {
  display: grid;
  width: 34px;
  height: 34px;
  place-items: center;
  border-radius: 50%;
  background: var(--blue);
  color: var(--white);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.04em;
}

.site-nav {
  display: flex;
  align-items: center;
  gap: clamp(24px, 3vw, 44px);
}

.site-nav a {
  position: relative;
  color: var(--ink-soft);
  font-family: var(--sans);
  font-size: 14px;
  font-weight: 600;
  letter-spacing: 0.01em;
  text-decoration: none;
}

.site-nav a::after {
  position: absolute;
  right: 0;
  bottom: -7px;
  left: 0;
  height: 1px;
  transform: scaleX(0);
  transform-origin: right;
  background: currentColor;
  content: "";
  transition: transform 180ms ease;
}

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

.menu-toggle {
  display: none;
}

.hero {
  display: grid;
  min-height: 610px;
  grid-template-columns: minmax(0, 1fr) 280px;
  align-items: center;
  gap: clamp(56px, 10vw, 140px);
  padding-block: 92px 110px;
}

.hero h1 {
  max-width: 680px;
  margin: 0;
  font-family: var(--serif);
  font-size: clamp(46px, 5vw, 62px);
  font-weight: 400;
  letter-spacing: -0.035em;
  line-height: 1.1;
}

.hero-role {
  margin: 10px 0 0;
  color: var(--ink);
  font-family: var(--serif);
  font-size: clamp(22px, 2.2vw, 29px);
  font-weight: 400;
  letter-spacing: -0.02em;
  line-height: 1.25;
}

.hero-affiliation {
  margin: 12px 0 0;
  color: var(--blue-dark);
  font-size: 14px;
  font-weight: 600;
}

.hero-actions,
.contact-actions {
  display: flex;
  align-items: center;
  gap: 28px;
  margin-top: 34px;
}

.button {
  display: inline-flex;
  min-height: 46px;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  padding: 0 18px;
  border: 1px solid transparent;
  border-radius: 3px;
  font-size: 13px;
  font-weight: 650;
  letter-spacing: 0.02em;
  text-decoration: none;
  transition: transform 180ms ease, background 180ms ease, color 180ms ease;
}

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

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

.button-primary:hover {
  background: var(--blue-dark);
}

.text-link {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  font-size: 14px;
  font-weight: 650;
  text-decoration: none;
}

.text-link span {
  transition: transform 180ms ease;
}

.text-link:hover span {
  transform: translate(3px, -1px);
}

.portrait-wrap {
  width: 100%;
  max-width: 280px;
  margin: 0;
  justify-self: end;
}

.portrait-frame {
  position: relative;
  overflow: hidden;
  aspect-ratio: 1 / 1;
  background: var(--paper-deep);
}

.portrait-frame::after {
  position: absolute;
  inset: 0;
  border: 1px solid rgba(255, 255, 255, 0.4);
  box-shadow: inset 0 0 50px rgba(17, 23, 33, 0.05);
  content: "";
  pointer-events: none;
}

.portrait-frame img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center;
  filter: saturate(0.88) contrast(1.02);
}

.signal-strip {
  border-block: 1px solid var(--line);
  background: rgba(250, 248, 243, 0.58);
}

.signal-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
}

.signal-grid > div {
  min-height: 112px;
  padding: 27px 28px;
  border-left: 1px solid var(--line);
}

.signal-grid > div:last-child {
  border-right: 1px solid var(--line);
}

.signal-value,
.signal-label {
  display: block;
}

.signal-value {
  margin-bottom: 6px;
  font-family: var(--serif);
  font-size: 24px;
}

.signal-label {
  color: var(--ink-soft);
  font-size: 11px;
  letter-spacing: 0.01em;
  line-height: 1.4;
}

.section {
  padding-block: clamp(82px, 9vw, 120px);
}

.section-heading h2,
.contact-section h2,
.page-hero h1 {
  margin: 0;
  font-family: var(--serif);
  font-size: clamp(34px, 3.8vw, 46px);
  font-weight: 400;
  letter-spacing: -0.03em;
  line-height: 1.15;
}

.about-section {
  display: grid;
  grid-template-columns: 220px minmax(0, 1fr);
  gap: clamp(56px, 9vw, 120px);
}

.about-section .section-heading h2 {
  max-width: 460px;
}

.about-copy {
  max-width: 710px;
}

.about-copy p {
  color: var(--ink-soft);
  font-size: 17px;
}

.about-copy .large-copy {
  margin-top: 0;
  color: var(--ink);
  font-family: var(--serif);
  font-size: 22px;
  letter-spacing: -0.012em;
  line-height: 1.5;
}

.about-copy .text-link {
  margin-top: 20px;
}

.research-section {
  border-block: 1px solid var(--line);
  background: var(--blue-light);
  color: var(--ink);
}

.section-heading-wide {
  display: flex;
  align-items: end;
  justify-content: space-between;
  gap: 48px;
  margin-bottom: 64px;
}

.section-heading-wide > p {
  max-width: 310px;
  margin: 0 0 8px;
  color: var(--ink-soft);
}

.research-section .section-heading-wide > p {
  color: var(--ink-soft);
}

.research-list {
  border: 1px solid #cdd7dc;
}

.research-topic + .research-topic {
  border-top: 1px solid #cdd7dc;
}

.research-card {
  appearance: none;
  position: relative;
  width: 100%;
  padding: clamp(26px, 3vw, 36px) clamp(28px, 4vw, 48px);
  border: 0;
  background: transparent;
  color: inherit;
  cursor: pointer;
  font: inherit;
  text-align: left;
  transition: background 200ms ease, box-shadow 200ms ease;
}

.research-card:hover {
  background: rgba(255, 255, 255, 0.42);
}

.research-card[aria-expanded="true"] {
  background: var(--surface);
  box-shadow: inset 3px 0 0 var(--blue);
}

.research-card:focus-visible {
  z-index: 1;
  outline: 2px solid var(--blue-dark);
  outline-offset: -3px;
}

.research-card-heading {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 32px;
}

.research-card-title {
  font-family: var(--serif);
  font-size: clamp(24px, 2.2vw, 30px);
  font-weight: 400;
  letter-spacing: -0.02em;
  line-height: 1.2;
}

.research-card-toggle {
  color: var(--blue-dark);
  font-family: var(--sans);
  font-size: 25px;
  font-weight: 400;
  line-height: 1;
}

.tag-list {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 16px 0 0;
}

.tag-list .tag {
  padding: 6px 10px;
  border: 1px solid #c4d0d6;
  border-radius: 99px;
  color: var(--blue-dark);
  font-family: var(--sans);
  font-size: 12px;
  letter-spacing: 0.01em;
}

.research-panel {
  padding: clamp(28px, 4vw, 46px) clamp(28px, 4vw, 48px);
  border-top: 1px solid #cdd7dc;
  background: var(--surface);
}

.topic-publications {
  padding: 0;
  border-top: 1px solid var(--ink);
  margin: 0;
  list-style: none;
}

.topic-publications li {
  display: grid;
  grid-template-columns: 70px minmax(0, 1fr) 34px;
  gap: clamp(18px, 3vw, 36px);
  align-items: start;
  padding-block: 26px;
  border-bottom: 1px solid var(--line);
}

.topic-publications time {
  padding-top: 3px;
  color: var(--blue-dark);
  font-family: var(--sans);
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.05em;
}

.topic-publications h4 {
  max-width: 780px;
  margin: 0;
  font-family: var(--serif);
  font-size: clamp(18px, 1.7vw, 22px);
  font-weight: 400;
  letter-spacing: -0.015em;
  line-height: 1.3;
}

.topic-publications h4 a {
  text-decoration: none;
}

.topic-publications h4 a:hover {
  color: var(--blue-dark);
}

.topic-publications p {
  margin: 7px 0 0;
  color: var(--ink-soft);
  font-size: 13px;
}

.paper-link {
  padding-top: 1px;
  color: var(--blue-dark);
  font-size: 18px;
  text-align: right;
  text-decoration: none;
}

.paper-link:hover {
  color: var(--ink);
}

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

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

.news-item {
  display: grid;
  grid-template-columns: 150px minmax(0, 1fr) 34px;
  gap: clamp(24px, 4vw, 56px);
  align-items: start;
  padding-block: 30px;
  border-bottom: 1px solid var(--line);
}

.news-meta {
  display: grid;
  gap: 9px;
  padding-top: 3px;
}

.news-meta time {
  color: var(--blue-dark);
  font-size: 12px;
  font-weight: 650;
}

.news-category {
  width: fit-content;
  padding: 3px 8px;
  border: 1px solid var(--line);
  border-radius: 99px;
  color: var(--ink-soft);
  font-size: 11px;
}

.news-item h2,
.news-item h3 {
  max-width: 760px;
  margin: 0;
  font-family: var(--serif);
  font-size: clamp(20px, 1.8vw, 24px);
  font-weight: 400;
  letter-spacing: -0.015em;
  line-height: 1.28;
}

.news-item h2 a,
.news-item h3 a {
  text-decoration: none;
}

.news-item h2 a:hover,
.news-item h3 a:hover {
  color: var(--blue-dark);
}

.news-item p {
  max-width: 720px;
  margin: 8px 0 0;
  color: var(--ink-soft);
  font-size: 14px;
}

.news-arrow {
  color: var(--blue-dark);
  font-size: 18px;
  text-align: right;
  text-decoration: none;
}

.news-arrow:hover {
  color: var(--ink);
}

.news-archive {
  padding-block: 80px 140px;
}

.contact-section {
  padding-block: clamp(82px, 9vw, 120px);
  border-top: 1px solid #d2dce1;
  background: var(--blue-light);
  color: var(--ink);
}

.contact-layout {
  display: grid;
  grid-template-columns: 1fr;
}

.contact-section h2 {
  max-width: 850px;
  font-size: clamp(34px, 3.8vw, 46px);
  line-height: 1.15;
}

.contact-section h2 + p {
  max-width: 650px;
  margin: 34px 0 0;
  color: var(--ink-soft);
  font-size: 16px;
}

.contact-section .phd-note {
  max-width: 650px;
  padding-left: 16px;
  border-left: 2px solid var(--blue);
  margin: 20px 0 0;
  color: var(--ink);
  font-size: 14px;
}

.button-light {
  border-color: var(--blue);
  background: var(--blue);
  color: var(--white);
}

.button-light:hover {
  background: var(--blue-dark);
}

.text-link-light {
  color: var(--ink);
}

.site-footer {
  display: grid;
  width: var(--shell);
  grid-template-columns: 1fr auto;
  gap: 42px;
  align-items: center;
  padding-block: 54px;
  margin-inline: auto;
  color: var(--ink-soft);
  font-size: 12px;
}

.site-footer p {
  margin: 0;
}

.footer-links {
  display: flex;
  gap: 28px;
}

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

.footer-links a:hover {
  color: var(--blue);
}

.copyright {
  color: var(--ink-soft);
}

.reveal {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 650ms ease, transform 650ms cubic-bezier(0.22, 1, 0.36, 1);
}

.reveal-delay {
  transition-delay: 120ms;
}

.reveal.is-visible {
  opacity: 1;
  transform: none;
}

/* Interior pages */
.page-hero {
  display: grid;
  min-height: 360px;
  grid-template-columns: 1fr;
  align-items: end;
  padding-block: 76px 58px;
  border-bottom: 1px solid var(--line);
}

.page-hero h1 {
  max-width: 850px;
  font-size: clamp(38px, 4.5vw, 54px);
}

.page-hero .page-deck {
  max-width: 650px;
  margin: 28px 0 0;
  color: var(--ink-soft);
  font-size: 17px;
}

.cv-layout {
  display: grid;
  grid-template-columns: 240px minmax(0, 1fr);
  gap: clamp(60px, 10vw, 140px);
  padding-block: 100px 150px;
}

.cv-nav {
  position: sticky;
  top: 120px;
  align-self: start;
  padding: 0;
  margin: 0;
  list-style: none;
}

.cv-nav li + li {
  margin-top: 12px;
}

.cv-nav a {
  color: var(--ink-soft);
  font-size: 13px;
  text-decoration: none;
}

.cv-nav a:hover {
  color: var(--blue);
}

.cv-main {
  min-width: 0;
}

.cv-section + .cv-section {
  padding-top: 86px;
}

.cv-section > h2 {
  padding-bottom: 20px;
  border-bottom: 1px solid var(--ink);
  margin: 0 0 36px;
  font-family: var(--serif);
  font-size: 34px;
  font-weight: 400;
  letter-spacing: -0.035em;
}

.cv-item {
  display: grid;
  grid-template-columns: 150px minmax(0, 1fr);
  gap: 30px;
  padding-bottom: 32px;
  border-bottom: 1px solid var(--line);
  margin-bottom: 32px;
}

.cv-item:last-child {
  margin-bottom: 0;
}

.cv-date {
  padding-top: 3px;
  color: var(--blue);
  font-family: var(--sans);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.01em;
}

.cv-item h3 {
  margin: 0;
  font-family: var(--serif);
  font-size: 26px;
  font-weight: 400;
  letter-spacing: -0.02em;
  line-height: 1.25;
}

.cv-item p {
  margin: 8px 0 0;
  color: var(--ink-soft);
}

.cv-item .detail {
  font-size: 13px;
}

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

.compact-list li {
  display: grid;
  grid-template-columns: 90px minmax(0, 1fr);
  gap: 28px;
  padding-block: 24px;
  border-bottom: 1px solid var(--line);
}

.compact-list .year {
  color: var(--blue);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.07em;
}

.compact-list p {
  margin: 0;
}

.compact-list .subtle {
  color: var(--ink-soft);
  font-size: 13px;
}

.legacy-page {
  min-height: 58vh;
  padding-block: 100px 140px;
}

.legacy-page h1 {
  max-width: 800px;
  margin: 0;
  font-family: var(--serif);
  font-size: clamp(38px, 4.5vw, 52px);
  font-weight: 400;
  letter-spacing: -0.045em;
  line-height: 1.04;
}

.legacy-page p {
  max-width: 670px;
  color: var(--ink-soft);
  font-size: 19px;
}

@media (max-width: 900px) {
  :root {
    --shell: min(100% - 40px, 760px);
  }

  .site-header {
    padding-inline: 20px;
  }

  .hero {
    min-height: auto;
    grid-template-columns: 1fr;
    gap: 52px;
    padding-block: 72px 84px;
  }

  .hero h1 {
    font-size: 50px;
  }

  .portrait-wrap {
    width: min(100%, 260px);
    justify-self: start;
  }

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

  .signal-grid > div:nth-child(3) {
    border-top: 1px solid var(--line);
  }

  .signal-grid > div:nth-child(4) {
    border-top: 1px solid var(--line);
    border-right: 1px solid var(--line);
  }

  .about-section,
  .contact-layout,
  .page-hero,
  .cv-layout {
    grid-template-columns: 1fr;
  }

  .cv-nav {
    position: static;
  }

  .cv-nav {
    display: flex;
    flex-wrap: wrap;
    gap: 10px 20px;
  }

  .cv-nav li + li {
    margin-top: 0;
  }

  .page-hero {
    gap: 12px;
  }
}

@media (max-width: 680px) {
  :root {
    --shell: calc(100% - 32px);
    --header-height: 72px;
  }

  .wordmark-name {
    display: none;
  }

  .menu-toggle {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    padding: 8px 0;
    border: 0;
    background: transparent;
    color: var(--ink);
    font: 600 12px/1 var(--sans);
    letter-spacing: 0.02em;
  }

  .menu-lines,
  .menu-lines::before {
    display: block;
    width: 18px;
    height: 1px;
    background: currentColor;
    content: "";
    transition: transform 180ms ease;
  }

  .menu-lines::before {
    transform: translateY(-5px);
  }

  .menu-toggle[aria-expanded="true"] .menu-lines {
    transform: rotate(45deg);
  }

  .menu-toggle[aria-expanded="true"] .menu-lines::before {
    transform: rotate(-90deg);
  }

  .site-nav {
    position: absolute;
    top: 100%;
    right: 0;
    left: 0;
    display: none;
    align-items: stretch;
    padding: 14px 20px 24px;
    border-bottom: 1px solid var(--line);
    background: var(--paper);
  }

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

  .site-nav a {
    padding-block: 13px;
  }

  .hero {
    padding-block: 56px 68px;
  }

  .hero h1 {
    font-size: 42px;
  }

  .hero-actions,
  .contact-actions {
    align-items: flex-start;
    flex-direction: column;
    gap: 20px;
  }

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

  .signal-grid > div,
  .signal-grid > div:nth-child(2) {
    min-height: 92px;
    border-right: 1px solid var(--line);
    border-bottom: 1px solid var(--line);
    border-top: 0;
  }

  .signal-grid > div:last-child {
    border-bottom: 0;
  }

  .section-heading-wide {
    align-items: flex-start;
    flex-direction: column;
    margin-bottom: 44px;
  }

  .research-card {
    padding: 26px 24px;
  }

  .research-panel {
    padding: 30px 24px;
  }

  .topic-publications li {
    grid-template-columns: 48px minmax(0, 1fr);
    gap: 14px;
    padding-block: 22px;
  }

  .paper-link {
    display: none;
  }

  .news-item {
    grid-template-columns: 1fr 28px;
    gap: 14px 18px;
  }

  .news-meta {
    grid-column: 1 / -1;
    grid-template-columns: auto 1fr;
    align-items: center;
    gap: 14px;
  }

  .news-arrow {
    grid-column: 2;
    grid-row: 2;
  }

  .news-archive {
    padding-block: 60px 100px;
  }

  .cv-item {
    grid-template-columns: 1fr;
    gap: 12px;
  }

  .page-hero {
    min-height: 320px;
    padding-block: 64px 50px;
  }

  .cv-layout {
    padding-block: 70px 100px;
  }

  .compact-list li {
    grid-template-columns: 1fr;
    gap: 8px;
  }

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

  .footer-links {
    align-items: flex-start;
    flex-direction: column;
    gap: 9px;
  }
}

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

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

  .reveal {
    opacity: 1;
    transform: none;
  }
}

@media print {
  .site-header,
  .site-footer,
  .cv-nav,
  .contact-section {
    display: none;
  }

  body,
  body::before {
    background: #fff;
  }

  .page-hero,
  .cv-layout {
    width: 100%;
  }

  .cv-layout {
    display: block;
    padding-top: 40px;
  }
}