:root {
  --blue: #2563eb;
  --blue-dark: #1d4ed8;
  --blue-bright: #60a5fa;
  --blue-light: #eff6ff;
  --ink: #1d2733;
  --muted: #5f6b78;
  --line: #dce3e9;
  --white: #ffffff;
  --shell: 960px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  scroll-padding-top: 82px;
}

body {
  margin: 0;
  background: var(--white);
  color: var(--ink);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Helvetica, Arial, sans-serif;
  font-size: 16px;
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}

a {
  color: var(--blue);
  text-decoration-thickness: 1px;
  text-underline-offset: 3px;
}

a:hover {
  color: var(--blue-dark);
}

:focus-visible {
  outline: 2px solid var(--blue);
  outline-offset: 4px;
}

.skip-link {
  position: fixed;
  top: 10px;
  left: 10px;
  z-index: 100;
  padding: 8px 12px;
  background: var(--ink);
  color: var(--white);
  transform: translateY(-150%);
}

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

.section-shell,
.nav-shell {
  width: min(var(--shell), calc(100% - 48px));
  margin: 0 auto;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  border-bottom: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.97);
  backdrop-filter: blur(10px);
}

.nav-shell {
  min-height: 68px;
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: center;
  gap: 36px;
}

.wordmark {
  color: var(--ink);
  font-size: 17px;
  font-weight: 700;
  letter-spacing: -0.01em;
  text-decoration: none;
  white-space: nowrap;
}

.site-nav {
  display: flex;
  justify-content: center;
  gap: 28px;
}

.site-nav a {
  position: relative;
  color: var(--muted);
  font-size: 14px;
  font-weight: 600;
  text-decoration: none;
}

.site-nav a::after {
  content: "";
  position: absolute;
  right: 0;
  bottom: -22px;
  left: 0;
  height: 2px;
  background: var(--blue-bright);
  opacity: 0;
}

.site-nav a:hover,
.site-nav a.is-active {
  color: var(--blue);
}

.site-nav a.is-active::after {
  opacity: 1;
}

.nav-cv {
  color: var(--blue);
  font-size: 14px;
  font-weight: 650;
  text-decoration: none;
}

.hero {
  min-height: 570px;
  display: grid;
  grid-template-columns: minmax(0, 1fr) 320px;
  align-items: center;
  gap: 58px;
  padding-top: 90px;
  padding-bottom: 90px;
}

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

.eyebrow {
  margin: 0 0 12px;
  color: var(--blue);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.09em;
  text-transform: uppercase;
}

.eyebrow::before {
  content: "";
  width: 8px;
  height: 8px;
  display: inline-block;
  margin-right: 9px;
  border-radius: 50%;
  background: var(--blue-bright);
}

.hero h1 {
  margin: 0;
  color: var(--ink);
  font-family: Inter, ui-sans-serif, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  font-size: clamp(48px, 7vw, 72px);
  font-weight: 780;
  letter-spacing: -0.048em;
  line-height: 1.04;
}

.hero-role {
  margin: 13px 0 0;
  color: var(--blue);
  font-size: clamp(18px, 2.4vw, 22px);
  line-height: 1.5;
}

.hero-intro {
  max-width: 750px;
  margin: 27px 0 0;
  color: var(--muted);
  font-size: 17px;
  line-height: 1.8;
}

.availability {
  margin: 18px 0 0;
  color: var(--blue-dark);
  font-size: 15px;
}

.availability::before {
  content: "";
  width: 7px;
  height: 7px;
  display: inline-block;
  margin: 0 9px 2px 0;
  border-radius: 50%;
  background: var(--blue-bright);
}

.availability strong {
  color: var(--ink);
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 11px;
  margin-top: 30px;
}

.button {
  display: inline-flex;
  min-height: 43px;
  align-items: center;
  justify-content: center;
  gap: 6px;
  padding: 9px 16px;
  border: 1px solid var(--line);
  border-radius: 5px;
  font-size: 14px;
  font-weight: 650;
  text-decoration: none;
}

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

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

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

.button-secondary:hover {
  border-color: var(--blue);
  color: var(--blue-dark);
}

.profile-links {
  display: flex;
  flex-wrap: wrap;
  gap: 20px;
  margin-top: 24px;
}

.profile-links a {
  color: var(--muted);
  font-size: 14px;
  text-decoration: none;
}

.profile-links a:hover {
  color: var(--blue);
  text-decoration: underline;
}

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

.portrait::before {
  content: "";
  position: absolute;
  top: -14px;
  right: -14px;
  width: 76px;
  height: 76px;
  background: var(--blue-bright);
}

.portrait-frame {
  position: relative;
  width: 100%;
  aspect-ratio: 4 / 5;
  display: grid;
  place-items: center;
  overflow: hidden;
  background: var(--blue-light);
  box-shadow: 0 24px 48px rgba(29, 78, 216, 0.18);
}

.portrait-frame img {
  width: 100%;
  height: 100%;
  display: block;
  object-fit: cover;
}

.portrait figcaption {
  margin-top: 9px;
  color: var(--muted);
  font-size: 12px;
}

.section {
  padding: 84px 0;
  border-top: 1px solid var(--line);
  background: var(--white);
}

.section-heading {
  max-width: 690px;
  margin-bottom: 42px;
}

.section-heading h2,
.cv-card h2 {
  margin: 0;
  color: var(--ink);
  font-family: Inter, ui-sans-serif, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  font-size: clamp(32px, 4.5vw, 43px);
  font-weight: 760;
  letter-spacing: -0.038em;
  line-height: 1.14;
}

.section-heading > p:last-child,
.publication-heading > p,
.cv-card p {
  margin: 15px 0 0;
  color: var(--muted);
  font-size: 16px;
}

.research-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 55px;
}

.research-card {
  padding-left: 23px;
  border-left: 3px solid var(--blue);
}

.research-card:nth-child(even) {
  border-left-color: var(--blue-bright);
}

.research-card h3 {
  margin: 0;
  font-size: 20px;
  font-weight: 700;
  letter-spacing: -0.015em;
  line-height: 1.35;
}

.research-card p {
  margin: 11px 0 0;
  color: var(--muted);
}

.project-heading {
  margin-bottom: 34px;
}

.project-card {
  display: grid;
  grid-template-columns: minmax(235px, 0.75fr) minmax(0, 1.25fr);
  min-height: 270px;
  overflow: hidden;
  background: var(--white);
  box-shadow: 0 18px 42px rgba(29, 78, 216, 0.12);
}

.project-visual {
  position: relative;
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  padding: 35px;
  overflow: hidden;
  background: var(--blue);
  color: var(--white);
}

.project-visual::before,
.project-visual::after {
  content: "";
  position: absolute;
  border: 1px solid rgba(255, 255, 255, 0.26);
  border-radius: 50%;
}

.project-visual::before {
  top: -72px;
  right: -52px;
  width: 190px;
  height: 190px;
}

.project-visual::after {
  top: -33px;
  right: -13px;
  width: 112px;
  height: 112px;
}

.project-visual > span,
.project-visual > strong,
.beat-line {
  position: relative;
  z-index: 1;
}

.project-visual > span {
  margin-bottom: 4px;
  color: rgba(255, 255, 255, 0.78);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.project-visual > strong {
  font-family: Inter, ui-sans-serif, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  font-size: clamp(40px, 6vw, 58px);
  letter-spacing: -0.045em;
  line-height: 1;
}

.beat-line {
  height: 30px;
  display: flex;
  align-items: center;
  gap: 8px;
  margin-top: 24px;
}

.beat-line i {
  width: 4px;
  height: 12px;
  display: block;
  background: var(--blue-bright);
}

.beat-line i:nth-child(2),
.beat-line i:nth-child(6) {
  height: 23px;
}

.beat-line i:nth-child(3),
.beat-line i:nth-child(5) {
  height: 17px;
}

.beat-line i:nth-child(4) {
  height: 30px;
  background: var(--white);
}

.project-content {
  align-self: center;
  padding: 42px 48px;
}

.project-status {
  margin: 0 0 7px;
  color: var(--blue);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.project-content h3 {
  margin: 0;
  font-family: Inter, ui-sans-serif, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  font-size: 30px;
  letter-spacing: -0.03em;
  line-height: 1.2;
}

.project-content > p:not(.project-status):not(.project-tags) {
  margin: 14px 0 0;
  color: var(--muted);
  font-size: 16px;
}

.project-tags {
  margin: 20px 0 0;
  color: var(--blue-dark);
  font-size: 13px;
  font-weight: 650;
}

.publication-heading {
  max-width: none;
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(280px, 0.55fr);
  align-items: end;
  gap: 45px;
}

.publication-heading > p {
  margin: 0 0 3px;
}

.publication-list {
  display: grid;
  gap: 0;
  border-top: 1px solid var(--line);
}

.publication-card {
  display: grid;
  grid-template-columns: 155px minmax(0, 1fr);
  gap: 31px;
  padding: 30px 0;
  border-bottom: 1px solid var(--line);
}

.publication-visual {
  position: relative;
  height: 208px;
  min-height: 0;
  align-self: center;
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  padding: 17px;
  overflow: hidden;
  background: var(--blue-light);
  color: var(--blue-dark);
}

.publication-visual::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 42px;
  height: 5px;
  background: var(--blue-bright);
}

.publication-visual.has-image {
  background-position: center;
  background-size: cover;
}

.publication-visual.has-image::after {
  content: "";
  position: absolute;
  inset: 45% 0 0;
  background: rgba(23, 71, 117, 0.7);
}

.publication-year,
.publication-visual > strong {
  position: relative;
  z-index: 2;
}

.publication-year {
  margin-bottom: 1px;
  color: var(--blue);
  font-size: 11px;
  font-weight: 700;
}

.publication-visual > strong {
  font-size: 14px;
  letter-spacing: 0.035em;
}

.publication-visual.has-image .publication-year,
.publication-visual.has-image strong {
  color: var(--white);
}

.publication-rings {
  position: absolute;
  top: -40px;
  right: -45px;
  width: 145px;
  height: 145px;
  border: 1px solid rgba(34, 95, 159, 0.18);
  border-radius: 50%;
}

.publication-rings::before {
  content: "";
  position: absolute;
  inset: 28px;
  border: 1px solid rgba(34, 95, 159, 0.18);
  border-radius: 50%;
}

.publication-content {
  align-self: center;
  padding: 0;
}

.publication-kicker {
  display: flex;
  flex-wrap: wrap;
  gap: 13px;
  margin-bottom: 8px;
}

.publication-kicker span {
  color: var(--blue);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.045em;
  text-transform: uppercase;
}

.publication-content h3 {
  max-width: 700px;
  margin: 0;
  font-size: 21px;
  letter-spacing: -0.02em;
  line-height: 1.35;
}

.publication-authors,
.publication-summary {
  max-width: 720px;
  margin: 9px 0 0;
  color: var(--muted);
  font-size: 14px;
  line-height: 1.65;
}

.publication-authors strong {
  color: var(--ink);
}

.publication-links {
  display: flex;
  flex-wrap: wrap;
  gap: 15px;
  margin-top: 15px;
}

.publication-links a,
.publication-links a.primary-link {
  padding: 0;
  border: 0;
  background: transparent;
  color: var(--blue);
  font-size: 13px;
  font-weight: 650;
  text-decoration: underline;
  text-decoration-thickness: 1px;
  text-underline-offset: 3px;
}

.publication-links a:hover,
.publication-links a.primary-link:hover {
  background: transparent;
  color: var(--blue-dark);
}

.notice {
  color: var(--muted);
}

.news-layout {
  display: grid;
  grid-template-columns: 210px minmax(0, 1fr);
  gap: 70px;
}

.news-layout .section-heading {
  margin-bottom: 0;
}

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

.timeline li {
  display: grid;
  grid-template-columns: 90px 1fr;
  gap: 22px;
  padding: 0 0 24px;
}

.timeline time {
  color: var(--blue);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.timeline p {
  margin: -5px 0 0;
  color: var(--muted);
}

.timeline strong {
  color: var(--ink);
}

.cv-section {
  padding-top: 72px;
  padding-bottom: 72px;
}

.cv-card {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  align-items: center;
  gap: 45px;
  padding: 40px 0;
  border-top: 3px solid var(--blue);
  border-bottom: 1px solid var(--line);
}

.cv-card h2 {
  font-size: clamp(30px, 4vw, 38px);
}

.site-footer {
  border-top: 1px solid var(--line);
}

.footer-inner {
  min-height: 90px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 25px;
  color: var(--muted);
  font-size: 13px;
}

.footer-inner p {
  margin: 0;
}

.footer-inner a {
  color: var(--muted);
}

@media (max-width: 760px) {
  .nav-shell {
    gap: 18px;
  }

  .site-nav {
    justify-content: flex-start;
    gap: 20px;
    overflow-x: auto;
    scrollbar-width: none;
  }

  .site-nav::-webkit-scrollbar {
    display: none;
  }

  .hero {
    grid-template-columns: minmax(0, 1fr) 245px;
    gap: 36px;
  }

  .publication-heading,
  .news-layout {
    grid-template-columns: 1fr;
  }

  .publication-heading {
    gap: 10px;
  }

  .news-layout {
    gap: 25px;
  }
}

@media (max-width: 620px) {
  .section-shell,
  .nav-shell {
    width: min(var(--shell), calc(100% - 32px));
  }

  html {
    scroll-padding-top: 118px;
  }

  .nav-shell {
    min-height: auto;
    grid-template-columns: 1fr auto;
    padding: 12px 0 8px;
  }

  .site-nav {
    grid-column: 1 / -1;
    grid-row: 2;
    margin-right: -16px;
    padding: 3px 16px 4px 0;
  }

  .site-nav a::after {
    bottom: -7px;
  }

  .hero {
    min-height: 0;
    grid-template-columns: 1fr;
    gap: 48px;
    padding-top: 68px;
    padding-bottom: 72px;
  }

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

  .hero-role {
    font-size: 19px;
  }

  .hero-intro {
    font-size: 16px;
  }

  .profile-links {
    gap: 14px 18px;
  }

  .portrait {
    width: min(90%, 340px);
  }

  .section {
    padding: 68px 0;
  }

  .research-grid {
    grid-template-columns: 1fr;
    gap: 32px;
  }

  .project-card {
    grid-template-columns: 1fr;
  }

  .project-visual {
    min-height: 220px;
  }

  .project-content {
    padding: 34px 28px;
  }

  .publication-card {
    grid-template-columns: 100px minmax(0, 1fr);
    gap: 20px;
    padding: 24px 0;
  }

  .publication-visual {
    height: 134px;
    min-height: 0;
    padding: 12px;
  }

  .publication-content h3 {
    font-size: 18px;
  }

  .publication-summary {
    display: none;
  }

  .publication-kicker {
    gap: 9px;
  }

  .timeline li {
    grid-template-columns: 72px 1fr;
    gap: 15px;
  }

  .cv-card {
    grid-template-columns: 1fr;
    gap: 24px;
  }

  .cv-card .button {
    width: max-content;
  }

  .footer-inner {
    min-height: 105px;
    flex-direction: column;
    align-items: flex-start;
    justify-content: center;
    gap: 1px;
  }
}

@media (max-width: 410px) {
  .publication-card {
    grid-template-columns: 1fr;
  }

  .publication-visual {
    height: 140px;
    min-height: 0;
  }
}

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