:root {
  --ink: #10212b;
  --muted: #53656e;
  --paper: #f7f9f8;
  --white: #ffffff;
  --line: #d9e2df;
  --accent: #007f76;
  --accent-bright: #2bc7b9;
  --violet: #6758d9;
  --dark: #102d34;
  --dark-soft: #163b43;
  --shadow: 0 22px 60px rgba(16, 45, 52, 0.1);
  --radius: 1.35rem;
  --shell: 74rem;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  overflow-x: hidden;
  background: var(--paper);
  color: var(--ink);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  font-size: 1rem;
  line-height: 1.65;
  text-rendering: optimizeLegibility;
}

a {
  color: inherit;
}

a:focus-visible {
  outline: 3px solid var(--accent-bright);
  outline-offset: 4px;
}

.skip-link {
  position: fixed;
  left: 1rem;
  top: 1rem;
  z-index: 100;
  padding: 0.65rem 1rem;
  transform: translateY(-180%);
  border-radius: 0.5rem;
  background: var(--ink);
  color: var(--white);
}

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

.shell {
  width: min(calc(100% - 2.5rem), var(--shell));
  margin-inline: auto;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  border-bottom: 1px solid rgba(217, 226, 223, 0.8);
  background: rgba(247, 249, 248, 0.9);
  backdrop-filter: blur(16px);
}

.header-inner,
.footer-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 2rem;
}

.header-inner {
  min-height: 4.5rem;
}

.wordmark {
  display: inline-flex;
  align-items: center;
  gap: 0.75rem;
  font-weight: 760;
  text-decoration: none;
}

.wordmark > span:first-child {
  display: grid;
  width: 2.35rem;
  height: 2.35rem;
  place-items: center;
  border-radius: 50%;
  background: var(--ink);
  color: var(--white);
  font-size: 0.72rem;
  letter-spacing: 0.05em;
}

nav {
  display: flex;
  align-items: center;
  gap: clamp(0.8rem, 2vw, 1.7rem);
}

nav a {
  color: var(--muted);
  font-size: 0.9rem;
  font-weight: 650;
  text-decoration: none;
}

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

.hero {
  position: relative;
  overflow: hidden;
  padding: clamp(5rem, 10vw, 8.5rem) 0 clamp(5rem, 9vw, 7.5rem);
}

.hero::before {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(16, 45, 52, 0.035) 1px, transparent 1px),
    linear-gradient(90deg, rgba(16, 45, 52, 0.035) 1px, transparent 1px);
  background-size: 42px 42px;
  content: "";
  mask-image: linear-gradient(to bottom, black, transparent 88%);
  pointer-events: none;
}

.hero-glow {
  position: absolute;
  width: 36rem;
  height: 36rem;
  right: -12rem;
  top: -18rem;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(43, 199, 185, 0.22), rgba(103, 88, 217, 0.06) 52%, transparent 72%);
  pointer-events: none;
}

.hero-grid {
  position: relative;
  display: grid;
  grid-template-columns: minmax(0, 1.35fr) minmax(18rem, 0.65fr);
  align-items: end;
  gap: clamp(3rem, 8vw, 7rem);
}

.hero-copy {
  min-width: 0;
}

.eyebrow {
  margin: 0 0 0.9rem;
  color: var(--accent);
  font-size: 0.78rem;
  font-weight: 800;
  letter-spacing: 0.13em;
  text-transform: uppercase;
}

h1,
h2,
h3,
p {
  text-wrap: pretty;
}

h1 {
  max-width: 12ch;
  margin: 0;
  font-size: clamp(3.8rem, 9vw, 7.7rem);
  line-height: 0.86;
  letter-spacing: -0.065em;
}

h1 span {
  color: transparent;
  -webkit-text-stroke: 1.5px var(--ink);
}

.hero-summary {
  max-width: 46rem;
  margin: 2.2rem 0 0;
  color: #354b55;
  font-size: clamp(1.08rem, 2vw, 1.32rem);
  line-height: 1.6;
}

.hero-actions,
.identity-links,
.contact-actions {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.9rem;
}

.hero-actions {
  margin-top: 2rem;
}

.button {
  display: inline-flex;
  min-height: 3rem;
  align-items: center;
  justify-content: center;
  padding: 0.75rem 1.2rem;
  border: 1px solid var(--ink);
  border-radius: 999px;
  font-size: 0.94rem;
  font-weight: 760;
  text-decoration: none;
  transition: transform 160ms ease, background 160ms ease, color 160ms ease;
}

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

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

.button-secondary {
  background: transparent;
}

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

.identity-links {
  margin: 1.65rem 0 0;
  padding: 0;
  list-style: none;
}

.identity-links a,
.text-link {
  color: var(--accent);
  font-size: 0.91rem;
  font-weight: 760;
  text-underline-offset: 0.25rem;
}

.hero-side {
  display: grid;
  align-self: end;
  min-width: 0;
  width: 100%;
  gap: 1rem;
}

.portrait-frame {
  position: relative;
  z-index: 2;
  width: min(11rem, 54%);
  aspect-ratio: 1;
  margin: 0 auto -3.7rem;
  padding: 0.35rem;
  border: 1px solid rgba(255, 255, 255, 0.9);
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.72);
  box-shadow: 0 18px 44px rgba(16, 45, 52, 0.18);
}

.portrait-frame img {
  display: block;
  width: 100%;
  height: 100%;
  border-radius: 50%;
  object-fit: cover;
}

.hero-panel {
  position: relative;
  overflow: hidden;
  min-width: 0;
  padding: 5rem 1.35rem 1.35rem;
  border: 1px solid rgba(255, 255, 255, 0.55);
  border-radius: var(--radius);
  background: linear-gradient(145deg, rgba(255, 255, 255, 0.92), rgba(231, 244, 241, 0.82));
  box-shadow: var(--shadow);
}

.panel-label {
  margin: 0;
  color: var(--muted);
  font-size: 0.75rem;
  font-weight: 800;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.research-map {
  display: grid;
  min-width: 0;
  gap: 0.75rem;
  margin-top: 1rem;
}

.focus-track {
  min-width: 0;
  padding: 0.8rem;
  border: 1px solid var(--line);
  border-radius: 0.9rem;
  background: rgba(255, 255, 255, 0.58);
}

.focus-track h3 {
  margin: 0 0 0.65rem;
  color: var(--accent);
  font-size: 0.7rem;
  letter-spacing: 0.07em;
  line-height: 1.25;
  text-transform: uppercase;
}

.quantum-track h3 {
  color: var(--violet);
}

.track-flow {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  min-width: 0;
  gap: 0.6rem;
  margin: 0;
  padding: 0;
  list-style: none;
}

.track-flow li {
  position: relative;
  display: grid;
  min-height: 3.7rem;
  place-items: center;
  padding: 0.4rem;
  border-radius: 0.65rem;
  background: var(--paper);
  font-size: 0.7rem;
  font-weight: 720;
  line-height: 1.25;
  overflow-wrap: anywhere;
  text-align: center;
}

.track-flow li:not(:last-child)::after {
  position: absolute;
  right: -0.48rem;
  width: 0.38rem;
  height: 0.38rem;
  border-top: 2px solid var(--accent);
  border-right: 2px solid var(--accent);
  content: "";
  transform: rotate(45deg);
}

.quantum-track .track-flow li:not(:last-child)::after {
  border-color: var(--violet);
}

.map-goal {
  margin: 0.9rem 0 0;
  padding-top: 0.8rem;
  border-top: 1px solid var(--line);
  font-size: 0.86rem;
  font-weight: 680;
  line-height: 1.4;
}

.map-goal span {
  display: block;
  margin-bottom: 0.15rem;
  color: var(--muted);
  font-size: 0.7rem;
  font-weight: 750;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.section {
  padding: clamp(4.7rem, 9vw, 8rem) 0;
}

.section-tint {
  background: #eaf1ef;
}

.section-dark {
  background: var(--dark);
  color: var(--white);
}

.section-dark .eyebrow,
.light-link {
  color: var(--accent-bright);
}

.section-heading {
  max-width: 54rem;
  margin-bottom: clamp(2.5rem, 5vw, 4rem);
}

.section-heading h2,
.contact-section h2 {
  margin: 0;
  font-size: clamp(2.2rem, 5vw, 4rem);
  line-height: 1.05;
  letter-spacing: -0.045em;
}

.section-heading > p:last-child {
  max-width: 42rem;
  margin: 1.2rem 0 0;
  color: var(--muted);
  font-size: 1.08rem;
}

.section-dark .section-heading > p:last-child {
  color: #b8cccf;
}

.split-heading {
  display: grid;
  max-width: none;
  grid-template-columns: minmax(0, 1.25fr) minmax(16rem, 0.55fr);
  align-items: end;
  gap: 3rem;
}

.split-heading > p:last-child {
  margin: 0;
}

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

.research-card {
  position: relative;
  min-height: 20rem;
  padding: clamp(1.5rem, 4vw, 2.5rem);
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--white);
  box-shadow: 0 12px 36px rgba(16, 45, 52, 0.045);
}

.research-card::after {
  position: absolute;
  width: 12rem;
  height: 12rem;
  right: -6rem;
  bottom: -7rem;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(43, 199, 185, 0.18), transparent 68%);
  content: "";
}

.card-index {
  color: var(--accent);
  font-size: 0.78rem;
  font-weight: 850;
  letter-spacing: 0.1em;
}

.research-card h3,
.publication-list h3,
.timeline h3,
.recognition-grid h3 {
  margin: 1.25rem 0 0.7rem;
  font-size: 1.35rem;
  line-height: 1.25;
  letter-spacing: -0.02em;
}

.research-card > p:not(.card-meta) {
  max-width: 34rem;
  color: var(--muted);
}

.card-meta {
  position: absolute;
  left: clamp(1.5rem, 4vw, 2.5rem);
  right: clamp(1.5rem, 4vw, 2.5rem);
  bottom: 1.5rem;
  margin: 0;
  color: var(--accent);
  font-size: 0.78rem;
  font-weight: 750;
  letter-spacing: 0.025em;
}

.publication-list {
  margin: 0;
  padding: 0;
  list-style: none;
  counter-reset: papers;
}

.publication-list li {
  position: relative;
  display: grid;
  grid-template-columns: minmax(9rem, 0.32fr) minmax(0, 1fr);
  gap: 2rem;
  padding: 2rem 0 2.1rem 4rem;
  border-top: 1px solid #c6d5d2;
  counter-increment: papers;
}

.publication-list li::before {
  position: absolute;
  left: 0;
  top: 2.15rem;
  color: var(--accent);
  content: "0" counter(papers);
  font-size: 0.8rem;
  font-weight: 850;
  letter-spacing: 0.08em;
}

.publication-status {
  margin: 0.25rem 0 0;
  color: var(--accent);
  font-size: 0.78rem;
  font-weight: 800;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.publication-list h3 {
  grid-column: 2;
  margin: 0;
}

.publication-list li > p:not(.publication-status),
.publication-list .text-link {
  grid-column: 2;
  margin: 0;
}

.two-column {
  display: grid;
  grid-template-columns: minmax(17rem, 0.62fr) minmax(0, 1fr);
  gap: clamp(3rem, 8vw, 8rem);
  align-items: start;
}

.sticky-heading {
  position: sticky;
  top: 7rem;
}

.timeline article {
  position: relative;
  padding: 0 0 2.7rem 2rem;
  border-left: 1px solid var(--line);
}

.timeline article::before {
  position: absolute;
  left: -0.39rem;
  top: 0.35rem;
  width: 0.7rem;
  height: 0.7rem;
  border: 2px solid var(--paper);
  border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 0 1px var(--accent);
  content: "";
}

.timeline-date,
.timeline-org {
  color: var(--accent);
  font-size: 0.8rem;
  font-weight: 800;
  letter-spacing: 0.055em;
  text-transform: uppercase;
}

.timeline h3 {
  margin: 0.35rem 0;
}

.timeline-org {
  margin: 0 0 0.6rem;
  color: var(--muted);
  text-transform: none;
}

.timeline article > p:last-child {
  margin: 0;
  color: var(--muted);
}

.recognition-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  overflow: hidden;
  border: 1px solid rgba(255, 255, 255, 0.16);
  border-radius: var(--radius);
  background: rgba(255, 255, 255, 0.16);
}

.recognition-grid article {
  min-height: 13rem;
  padding: 1.8rem;
  background: var(--dark);
}

.recognition-grid article:hover {
  background: var(--dark-soft);
}

.recognition-grid article > p {
  margin: 0;
  color: var(--accent-bright);
  font-size: 0.78rem;
  font-weight: 850;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.recognition-grid h3 {
  margin-top: 1.35rem;
}

.recognition-grid span {
  color: #b8cccf;
}

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

.service-list li {
  display: grid;
  grid-template-columns: minmax(7rem, 0.3fr) minmax(10rem, 0.45fr) minmax(0, 1fr);
  gap: 1.2rem;
  padding: 1.35rem 0;
  border-top: 1px solid var(--line);
}

.service-list span {
  color: var(--accent);
  font-size: 0.78rem;
  font-weight: 800;
  letter-spacing: 0.04em;
}

.service-list strong {
  line-height: 1.35;
}

.service-list p {
  margin: 0;
  color: var(--muted);
  line-height: 1.45;
}

.contact-section {
  padding: clamp(4.5rem, 9vw, 7rem) 0;
  background: linear-gradient(115deg, var(--accent) 0%, #006a69 55%, #3f47a5 120%);
  color: var(--white);
}

.contact-section .eyebrow {
  color: #bdfaf3;
}

.contact-inner {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  align-items: end;
  gap: 3rem;
}

.contact-section h2 {
  max-width: 17ch;
}

.contact-actions {
  justify-content: flex-end;
}

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

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

footer {
  padding: 1.6rem 0;
  background: #0a2026;
  color: #a9bec2;
  font-size: 0.82rem;
}

footer p {
  margin: 0;
}

@media (max-width: 850px) {
  .wordmark-name {
    display: none;
  }

  nav {
    gap: 1rem;
    overflow-x: auto;
  }

  nav a:nth-last-child(-n + 2) {
    display: none;
  }

  .hero-grid,
  .split-heading,
  .two-column,
  .contact-inner {
    grid-template-columns: 1fr;
  }

  .hero-side {
    max-width: 35rem;
  }

  .sticky-heading {
    position: static;
  }

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

  .publication-list h3,
  .publication-list li > p:not(.publication-status),
  .publication-list .text-link {
    grid-column: 1;
  }

  .contact-actions {
    justify-content: flex-start;
  }
}

@media (max-width: 620px) {
  .shell {
    width: min(calc(100% - 1.5rem), var(--shell));
  }

  .header-inner {
    min-height: 4rem;
  }

  nav {
    display: none;
  }

  h1 {
    max-width: 100%;
    font-size: clamp(3rem, 14vw, 4rem);
    line-height: 0.92;
    letter-spacing: -0.055em;
  }

  h1 span {
    -webkit-text-stroke-width: 1px;
  }

  .hero {
    padding-top: 4rem;
  }

  .hero-summary {
    max-width: 100%;
    font-size: 1.02rem;
  }

  .hero-side {
    max-width: 100%;
  }

  .track-flow {
    grid-template-columns: 1fr;
    gap: 0.45rem;
    padding-left: 0.7rem;
    border-left: 2px solid var(--accent);
  }

  .quantum-track .track-flow {
    border-color: var(--violet);
  }

  .track-flow li {
    min-height: 2.7rem;
    justify-items: start;
    padding: 0.5rem 0.7rem;
    text-align: left;
  }

  .track-flow li:not(:last-child)::after {
    display: none;
  }

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

  .research-card {
    min-height: 18rem;
  }

  .publication-list li {
    padding-left: 2.7rem;
  }

  .service-list li {
    grid-template-columns: 1fr;
    gap: 0.25rem;
  }

  .footer-inner {
    align-items: flex-start;
    flex-direction: column;
    gap: 0.25rem;
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    scroll-behavior: auto !important;
    transition-duration: 0.01ms !important;
  }
}

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

  body,
  .section,
  .section-dark,
  .section-tint {
    background: white;
    color: black;
  }

  .section {
    padding: 2rem 0;
  }
}