:root {
  --ink: #13231f;
  --muted: #60716b;
  --paper: #f4f3ed;
  --surface: #fffef9;
  --line: #d8ddd7;
  --accent: #1f6555;
  --accent-soft: #dfece7;
  --serif: "Newsreader", Georgia, serif;
  --sans: "DM Sans", system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  --max: 1120px;
}

* { box-sizing: border-box; }

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--ink);
  background:
    radial-gradient(circle at 80% 5%, rgba(31,101,85,.08), transparent 28rem),
    var(--paper);
  font-family: var(--sans);
  line-height: 1.65;
}

a {
  color: inherit;
  text-underline-offset: .2em;
}

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

.shell {
  width: min(calc(100% - 40px), var(--max));
  margin-inline: auto;
}

.site-header {
  width: min(calc(100% - 40px), var(--max));
  margin: 0 auto;
  min-height: 84px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  border-bottom: 1px solid rgba(19,35,31,.12);
}

.brand {
  width: 42px;
  height: 42px;
  display: grid;
  place-items: center;
  border-radius: 50%;
  background: var(--ink);
  color: white;
  text-decoration: none;
  font-size: .9rem;
  font-weight: 700;
  letter-spacing: .04em;
}

.site-nav {
  display: flex;
  align-items: center;
  gap: 30px;
  font-size: .94rem;
  font-weight: 600;
}

.site-nav a {
  text-decoration: none;
  color: var(--muted);
  transition: color .2s ease;
}

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

.site-nav .nav-cv {
  padding: 9px 15px;
  border: 1px solid var(--ink);
  border-radius: 999px;
  color: var(--ink);
}

.menu-button {
  display: none;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: transparent;
  color: var(--ink);
  padding: 8px 13px;
  font: inherit;
}

.hero {
  display: grid;
  grid-template-columns: minmax(0, 1.55fr) minmax(290px, .75fr);
  gap: clamp(48px, 8vw, 100px);
  align-items: center;
  min-height: 660px;
  padding-block: 80px;
}

.eyebrow {
  margin: 0 0 18px;
  font-size: .76rem;
  font-weight: 700;
  letter-spacing: .16em;
  color: var(--accent);
}

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

h1, h2 {
  font-family: var(--serif);
  line-height: .98;
  letter-spacing: -.025em;
  font-weight: 600;
}

.hero h1 {
  margin-bottom: 20px;
  font-size: clamp(4rem, 8vw, 7.2rem);
}

.hero-role {
  max-width: 760px;
  margin-bottom: 22px;
  font-size: clamp(1.2rem, 2.2vw, 1.55rem);
  line-height: 1.45;
  font-weight: 500;
}

.hero-text {
  max-width: 700px;
  color: var(--muted);
  font-size: 1.07rem;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin: 32px 0 22px;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 48px;
  padding: 0 20px;
  border-radius: 999px;
  font-weight: 700;
  text-decoration: none;
}

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

.button.secondary {
  border: 1px solid var(--line);
  background: rgba(255,255,255,.5);
}

.contact-row {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  color: var(--muted);
  font-size: .94rem;
}

.contact-row a {
  text-decoration: none;
  border-bottom: 1px solid transparent;
}

.contact-row a:hover {
  border-color: currentColor;
}

.hero-card {
  padding: 18px;
  background: rgba(255,254,249,.76);
  border: 1px solid rgba(19,35,31,.12);
  border-radius: 28px;
  box-shadow: 0 28px 80px rgba(19,35,31,.08);
  backdrop-filter: blur(10px);
}

.portrait-wrap {
  aspect-ratio: 4 / 4.5;
  overflow: hidden;
  border-radius: 19px;
  background: var(--accent-soft);
}

.portrait {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.portrait-fallback {
  width: 100%;
  height: 100%;
  place-items: center;
  font-family: var(--serif);
  font-size: clamp(4rem, 9vw, 7rem);
  color: var(--accent);
}

.portrait-fallback:not([hidden]) {
  display: grid;
}

.profile-facts {
  margin: 10px 0 0;
}

.profile-facts > div {
  display: grid;
  grid-template-columns: 90px 1fr;
  gap: 12px;
  padding: 13px 3px;
  border-bottom: 1px solid var(--line);
}

.profile-facts > div:last-child {
  border-bottom: 0;
}

.profile-facts dt {
  color: var(--muted);
  font-size: .76rem;
  text-transform: uppercase;
  letter-spacing: .08em;
}

.profile-facts dd {
  margin: 0;
  font-size: .89rem;
  font-weight: 500;
}

.section {
  padding-block: 95px;
  border-top: 1px solid rgba(19,35,31,.12);
}

.section-heading {
  margin-bottom: 38px;
}

.section-heading h2,
.page-intro h1 {
  margin-bottom: 0;
  font-size: clamp(2.65rem, 5vw, 4.7rem);
}

.split-heading {
  display: flex;
  align-items: end;
  justify-content: space-between;
  gap: 30px;
}

.text-link {
  white-space: nowrap;
  color: var(--accent);
  font-weight: 700;
  text-decoration: none;
}

.theme-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
}

.theme-card {
  min-height: 275px;
  padding: 28px;
  border: 1px solid var(--line);
  border-radius: 20px;
  background: rgba(255,254,249,.72);
  display: flex;
  flex-direction: column;
}

.card-number {
  color: var(--accent);
  font-size: .78rem;
  font-weight: 700;
}

.theme-card h3 {
  margin: auto 0 12px;
  font-family: var(--serif);
  font-size: 1.75rem;
  line-height: 1.1;
}

.theme-card p {
  margin-bottom: 0;
  color: var(--muted);
  font-size: .94rem;
}

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

.publication {
  display: grid;
  grid-template-columns: 90px 1fr;
  gap: 30px;
  padding: 34px 0;
  border-bottom: 1px solid var(--line);
}

.pub-year {
  color: var(--accent);
  font-size: .86rem;
  font-weight: 700;
}

.publication h3 {
  max-width: 850px;
  margin-bottom: 10px;
  font-family: var(--serif);
  font-size: clamp(1.45rem, 2.5vw, 2rem);
  line-height: 1.15;
}

.publication p {
  margin-bottom: 5px;
}

.publication .venue {
  color: var(--muted);
}

.pub-links,
.project-links {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 18px;
}

.pub-links a,
.project-links a {
  padding: 6px 11px;
  border-radius: 999px;
  background: var(--accent-soft);
  color: var(--accent);
  text-decoration: none;
  font-size: .82rem;
  font-weight: 700;
}

.timeline {
  max-width: 850px;
}

.timeline-item {
  display: grid;
  grid-template-columns: 115px 1fr;
  gap: 20px;
  padding: 18px 0;
  border-bottom: 1px solid var(--line);
}

.timeline-item time {
  color: var(--accent);
  font-size: .86rem;
  font-weight: 700;
}

.timeline-item p {
  margin: 0;
}

.page-intro {
  padding-block: 110px 90px;
}

.page-intro h1 {
  max-width: 900px;
  margin-bottom: 30px;
}

.page-intro > p:last-child {
  max-width: 760px;
  color: var(--muted);
  font-size: 1.1rem;
}

.research-stack {
  padding-top: 0;
  border-top: 0;
}

.project {
  display: grid;
  grid-template-columns: 230px 1fr;
  gap: clamp(30px, 7vw, 100px);
  padding: 62px 0;
  border-top: 1px solid var(--line);
}

.project-meta {
  display: flex;
  flex-direction: column;
  gap: 6px;
  color: var(--accent);
  font-size: .74rem;
  font-weight: 700;
  letter-spacing: .1em;
}

.project-content {
  max-width: 760px;
}

.project-content h2 {
  margin-bottom: 22px;
  font-size: clamp(2.2rem, 4vw, 3.8rem);
}

.project-content > p {
  color: var(--muted);
  font-size: 1.05rem;
}

.clean-list {
  padding-left: 1.2rem;
  margin: 24px 0;
}

.clean-list li {
  margin-bottom: 8px;
}

.future-project {
  padding-bottom: 10px;
}

.presentation-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
}

.presentation-card {
  min-height: 320px;
  padding: 28px;
  display: flex;
  flex-direction: column;
  border-radius: 20px;
  border: 1px solid var(--line);
  background: rgba(255,254,249,.72);
}

.presentation-type {
  color: var(--accent);
  font-size: .74rem;
  font-weight: 700;
  letter-spacing: .1em;
}

.presentation-card h3 {
  font-family: var(--serif);
  font-size: 1.6rem;
  line-height: 1.15;
}

.presentation-card > p:not(.presentation-type) {
  color: var(--muted);
}

.presentation-card a {
  margin-top: auto;
  color: var(--accent);
  text-decoration: none;
  font-weight: 700;
}

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

.honors-list > div {
  display: grid;
  grid-template-columns: 130px 1fr;
  gap: 25px;
  padding: 20px 0;
  border-bottom: 1px solid var(--line);
}

.honors-list span {
  color: var(--accent);
  font-size: .86rem;
  font-weight: 700;
}

.honors-list p {
  margin: 0;
}

.site-footer {
  min-height: 125px;
  padding-block: 30px;
  border-top: 1px solid rgba(19,35,31,.12);
  display: flex;
  justify-content: space-between;
  align-items: center;
  color: var(--muted);
  font-size: .82rem;
}

.site-footer p {
  margin: 0;
}

@media (max-width: 820px) {
  .site-header {
    position: relative;
  }

  .menu-button {
    display: inline-flex;
  }

  .site-nav {
    position: absolute;
    z-index: 10;
    top: 68px;
    right: 0;
    width: min(280px, 90vw);
    padding: 20px;
    display: none;
    flex-direction: column;
    align-items: stretch;
    gap: 8px;
    border: 1px solid var(--line);
    border-radius: 18px;
    background: var(--surface);
    box-shadow: 0 20px 45px rgba(19,35,31,.12);
  }

  .site-nav.open {
    display: flex;
  }

  .site-nav a {
    padding: 9px 8px;
  }

  .site-nav .nav-cv {
    margin-top: 5px;
    text-align: center;
  }

  .hero {
    grid-template-columns: 1fr;
    min-height: auto;
    padding-block: 70px;
  }

  .hero-card {
    max-width: 440px;
  }

  .theme-grid,
  .presentation-grid {
    grid-template-columns: 1fr;
  }

  .theme-card,
  .presentation-card {
    min-height: 235px;
  }

  .project {
    grid-template-columns: 1fr;
    gap: 25px;
  }

  .project-meta {
    flex-direction: row;
    justify-content: space-between;
  }
}

@media (max-width: 560px) {
  .shell,
  .site-header {
    width: min(calc(100% - 28px), var(--max));
  }

  .hero h1 {
    font-size: 3.7rem;
  }

  .hero-actions {
    align-items: stretch;
    flex-direction: column;
  }

  .publication,
  .timeline-item,
  .honors-list > div {
    grid-template-columns: 1fr;
    gap: 8px;
  }

  .split-heading {
    align-items: start;
    flex-direction: column;
  }

  .page-intro {
    padding-block: 75px 60px;
  }

  .section {
    padding-block: 72px;
  }

  .site-footer {
    align-items: flex-start;
    flex-direction: column;
    justify-content: center;
    gap: 5px;
  }
}