:root {
  --ink: #17231f;
  --muted: #66706a;
  --paper: #f4f1e9;
  --paper-deep: #e9e5da;
  --white: #fffdf8;
  --green: #163d32;
  --lime: #c5d97a;
  --line: rgba(23, 35, 31, .16);
  --sans: Inter, "Helvetica Neue", Arial, sans-serif;
  --serif: Georgia, "Times New Roman", serif;
  --max: 1180px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; color: var(--ink); background: var(--paper); font-family: var(--sans); line-height: 1.65; -webkit-font-smoothing: antialiased; }
a { color: inherit; }
img { max-width: 100%; display: block; }
.sr-only { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0, 0, 0, 0); }
.skip-link { position: fixed; top: -100px; left: 1rem; z-index: 100; padding: .75rem 1rem; background: var(--ink); color: white; }
.skip-link:focus { top: 1rem; }

.site-header { height: 88px; max-width: var(--max); margin: auto; padding: 0 2rem; display: flex; align-items: center; justify-content: space-between; border-bottom: 1px solid var(--line); }
.wordmark { display: flex; align-items: center; gap: .7rem; font-weight: 700; text-decoration: none; letter-spacing: -.02em; }
.wordmark-mark { display: grid; place-items: center; width: 36px; height: 36px; border: 1px solid var(--ink); border-radius: 50%; font-family: var(--serif); font-size: .82rem; }
.site-nav { display: flex; align-items: center; gap: 2rem; }
.site-nav a { position: relative; color: var(--muted); font-size: .87rem; font-weight: 600; text-decoration: none; }
.site-nav a::after { content: ""; position: absolute; left: 0; right: 100%; bottom: -.3rem; height: 1px; background: var(--ink); transition: right .25s ease; }
.site-nav a:hover { color: var(--ink); }
.site-nav a:hover::after { right: 0; }
.menu-button { display: none; border: 0; background: transparent; padding: .5rem; }
.menu-button > span:not(.sr-only) { display: block; width: 24px; height: 1px; margin: 5px; background: var(--ink); }

.hero { max-width: var(--max); min-height: 690px; margin: auto; padding: 6rem 2rem 5rem; display: grid; grid-template-columns: minmax(0, 1.45fr) minmax(260px, .55fr); gap: 6rem; align-items: center; }
.eyebrow, .card-kicker, .degree { margin: 0 0 1.2rem; color: var(--green); font-size: .72rem; font-weight: 800; letter-spacing: .15em; text-transform: uppercase; }
.hero h1 { max-width: 800px; margin: 0 0 2rem; font-family: var(--serif); font-size: clamp(3.1rem, 5.2vw, 5.1rem); font-weight: 400; letter-spacing: -.055em; line-height: .96; }
.hero h1 em { color: var(--green); font-weight: 400; }
.hero-intro { max-width: 680px; margin: 0; color: var(--muted); font-size: 1.08rem; }
.hero-intro strong { color: var(--ink); }
.hero-actions { display: flex; flex-wrap: wrap; gap: 1rem; margin-top: 2.2rem; }
.button { display: inline-flex; align-items: center; gap: 1rem; padding: .8rem 1.1rem; font-size: .82rem; font-weight: 700; text-decoration: none; }
.button-primary { background: var(--green); color: white; }
.button-primary:hover { background: var(--ink); }
.button-text { border-bottom: 1px solid var(--ink); }
.portrait-wrap { position: relative; align-self: end; }
.portrait-wrap img { position: relative; width: 100%; aspect-ratio: 3 / 4; object-fit: cover; object-position: 50% 22%; filter: saturate(.78) contrast(1.03); }
.portrait-accent { position: absolute; z-index: 2; inset: 0; border: 1px solid var(--green); pointer-events: none; }
.portrait-caption { margin: 1rem 0 0; font-size: .72rem; font-weight: 700; letter-spacing: .05em; text-transform: uppercase; line-height: 1.5; }
.portrait-caption span { color: var(--muted); font-weight: 500; }

.topic-strip { max-width: var(--max); margin: auto; padding: 1.25rem 2rem; display: flex; justify-content: space-between; gap: 2rem; border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); color: var(--muted); font-family: var(--serif); font-size: .95rem; font-style: italic; }
.section { max-width: var(--max); margin: auto; padding: 8rem 2rem; }
.section-heading { display: grid; grid-template-columns: 80px minmax(220px, .7fr) 1fr; gap: 1.5rem; align-items: baseline; margin-bottom: 4rem; }
.section-number { align-self: start; margin: .75rem 0 0; color: var(--muted); font-size: .72rem; font-weight: 800; letter-spacing: .15em; }
.section-heading h2 { margin: 0; font-family: var(--serif); font-size: clamp(2.5rem, 5vw, 4.4rem); font-weight: 400; letter-spacing: -.05em; line-height: 1; }
.section-heading > p:last-child { max-width: 430px; margin: .5rem 0 0 auto; color: var(--muted); }
.research-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 1rem; }
.feature-card { position: relative; min-height: 310px; padding: 2.2rem; overflow: hidden; border: 1px solid var(--line); background: var(--white); }
.feature-card-large { grid-row: span 2; min-height: 636px; padding-top: 3rem; }
.feature-card h3 { max-width: 430px; margin: 0 0 1.2rem; font-family: var(--serif); font-size: clamp(2rem, 4vw, 3.7rem); font-weight: 400; letter-spacing: -.04em; line-height: 1.04; }
.feature-card:not(.feature-card-large) h3 { font-size: 2.2rem; }
.feature-card p:not(.card-kicker) { max-width: 540px; color: var(--muted); }
.card-index { position: absolute; right: 1.5rem; bottom: -.6rem; color: var(--paper-deep); font-family: var(--serif); font-size: 8rem; line-height: 1; }
.accent-card { background: var(--lime); }
.accent-card .card-index { color: rgba(255,255,255,.35); }

.section-tinted { max-width: none; padding-left: max(2rem, calc((100vw - var(--max)) / 2 + 2rem)); padding-right: max(2rem, calc((100vw - var(--max)) / 2 + 2rem)); background: var(--paper-deep); }
.publication { display: grid; grid-template-columns: 230px 1fr; gap: 3rem; padding: 2.5rem 0; border-top: 1px solid var(--line); }
.publication:last-child { border-bottom: 1px solid var(--line); }
.publication-meta { display: flex; flex-direction: column; color: var(--muted); font-size: .76rem; font-weight: 700; letter-spacing: .06em; text-transform: uppercase; }
.publication h3 { max-width: 820px; margin: 0 0 1rem; font-family: var(--serif); font-size: clamp(1.6rem, 3vw, 2.35rem); font-weight: 400; line-height: 1.2; }
.publication p { max-width: 780px; margin: 0; color: var(--muted); }
.title-translation { color: var(--muted); font-size: .72em; font-style: italic; }

.timeline { margin-left: 80px; }
.timeline-item { display: grid; grid-template-columns: 170px 1fr; gap: 3rem; padding: 2.4rem 0; border-top: 1px solid var(--line); }
.timeline-item:last-child { border-bottom: 1px solid var(--line); }
.timeline-date { margin: .25rem 0; color: var(--muted); font-size: .75rem; font-weight: 700; letter-spacing: .06em; text-transform: uppercase; }
.timeline-item h3 { margin: 0; font-family: var(--serif); font-size: 1.65rem; font-weight: 400; }
.timeline-org { margin: .15rem 0 .8rem !important; color: var(--green) !important; font-size: .84rem; font-weight: 700; }
.timeline-item div > p:last-child { max-width: 740px; margin: 0; color: var(--muted); }

.education-section { max-width: none; padding-left: max(2rem, calc((100vw - var(--max)) / 2 + 2rem)); padding-right: max(2rem, calc((100vw - var(--max)) / 2 + 2rem)); color: white; background: var(--green); }
.light-heading .section-number, .light-heading > p:last-child { color: rgba(255,255,255,.65); }
.education-grid { display: grid; grid-template-columns: repeat(2, 1fr); border-top: 1px solid rgba(255,255,255,.22); border-left: 1px solid rgba(255,255,255,.22); }
.education-grid article { min-height: 220px; padding: 2rem; border-right: 1px solid rgba(255,255,255,.22); border-bottom: 1px solid rgba(255,255,255,.22); }
.education-grid .degree { color: var(--lime); }
.education-grid h3 { margin: 0 0 1rem; font-family: var(--serif); font-size: 2rem; font-weight: 400; }
.education-grid article > p:last-child { color: rgba(255,255,255,.66); }
.credentials { display: flex; flex-wrap: wrap; gap: .7rem; align-items: center; margin-top: 2rem; }
.credentials p { margin-right: 1rem; color: var(--lime); font-size: .7rem; font-weight: 800; letter-spacing: .12em; text-transform: uppercase; }
.credentials span { padding: .4rem .8rem; border: 1px solid rgba(255,255,255,.25); border-radius: 100px; color: rgba(255,255,255,.75); font-size: .75rem; }

.contact-section { max-width: var(--max); margin: auto; padding: 9rem 2rem; text-align: center; }
.contact-section h2 { margin: 0; font-family: var(--serif); font-size: clamp(3rem, 7vw, 6rem); font-weight: 400; letter-spacing: -.055em; line-height: .95; }
.contact-links { max-width: 720px; margin: 4rem auto 0; display: flex; justify-content: center; gap: 2rem; }
.contact-links a { padding-bottom: .4rem; border-bottom: 1px solid var(--ink); font-size: .82rem; font-weight: 700; text-decoration: none; }
.contact-links span { margin-left: 1rem; }
footer { max-width: var(--max); margin: auto; padding: 2rem; display: flex; justify-content: space-between; gap: 1rem; border-top: 1px solid var(--line); color: var(--muted); font-size: .72rem; letter-spacing: .05em; text-transform: uppercase; }
footer p { margin: 0; }
footer a { text-decoration: none; }

@media (max-width: 820px) {
  .site-header { height: 72px; padding: 0 1.25rem; }
  .menu-button { display: block; }
  .site-nav { position: absolute; z-index: 10; top: 72px; left: 0; right: 0; display: none; flex-direction: column; align-items: flex-start; gap: 0; padding: 1rem 1.25rem 1.5rem; background: var(--paper); border-bottom: 1px solid var(--line); }
  .site-nav.open { display: flex; }
  .site-nav a { width: 100%; padding: .65rem 0; }
  .hero { min-height: auto; padding: 4rem 1.25rem; grid-template-columns: 1fr; gap: 4rem; }
  .hero h1 { font-size: clamp(2.8rem, 11vw, 4.2rem); }
  .portrait-wrap { width: min(82%, 380px); margin: auto; }
  .topic-strip { padding: 1rem 1.25rem; overflow-x: auto; justify-content: flex-start; white-space: nowrap; }
  .section, .section-tinted, .education-section { padding: 6rem 1.25rem; }
  .section-heading { grid-template-columns: 45px 1fr; margin-bottom: 3rem; }
  .section-heading > p:last-child { grid-column: 2; margin: 0; }
  .research-grid { grid-template-columns: 1fr; }
  .feature-card-large { grid-row: auto; min-height: 430px; }
  .publication { grid-template-columns: 1fr; gap: 1rem; }
  .publication-meta { flex-direction: row; justify-content: space-between; }
  .timeline { margin-left: 45px; }
  .timeline-item { grid-template-columns: 1fr; gap: .5rem; }
  .education-grid { grid-template-columns: 1fr; }
  .contact-section { padding: 7rem 1.25rem; }
  .contact-links { flex-direction: column; align-items: center; }
  footer { margin: 0 1.25rem; padding: 1.5rem 0; flex-direction: column; }
}

@media (prefers-reduced-motion: no-preference) {
  .reveal { opacity: 0; transform: translateY(18px); transition: opacity .65s ease, transform .65s ease; }
  .reveal.visible { opacity: 1; transform: none; }
}