:root {
  --bg: #fffdf8;
  --surface: #ffffff;
  --ink: #14211f;
  --muted: #5b6d68;
  --line: #d4e0db;
  --tint: #edf4f0;
  --accent: #0e6b57;
  --accent2: #cf9b44;
  --dark: #132824;
  --shadow: 0 25px 70px rgba(18,40,35,.18);
  --max: 1160px;
}
html[data-theme="dark"] {
  --bg: #0e1816;
  --surface: #15231f;
  --ink: #eff8f4;
  --muted: #adc0ba;
  --line: #2d403b;
  --tint: #172a25;
  --accent: #71cdb5;
  --accent2: #e2b86e;
  --dark: #09110f;
  --shadow: 0 25px 70px rgba(0,0,0,.35);
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: "DM Sans", system-ui, sans-serif;
  line-height: 1.65;
  transition: background .25s, color .25s;
}
a { color: inherit; }
img { display: block; max-width: 100%; }
.container { width: min(calc(100% - 40px), var(--max)); margin: 0 auto; }
.skip { position: fixed; left: -999px; top: 10px; z-index: 1000; background: var(--surface); padding: 10px 14px; }
.skip:focus { left: 10px; }

.header {
  position: sticky; top: 0; z-index: 100;
  background: color-mix(in srgb, var(--bg) 88%, transparent);
  backdrop-filter: blur(14px);
  border-bottom: 1px solid color-mix(in srgb, var(--line) 70%, transparent);
}
.nav { min-height: 76px; display: flex; align-items: center; gap: 24px; }
.mark {
  width: 44px; height: 44px; display: grid; place-items: center;
  border-radius: 50%; background: var(--ink); color: var(--bg);
  font-weight: 800; text-decoration: none; letter-spacing: -.05em;
}
.links { display: flex; gap: 23px; margin-left: auto; }
.links a { text-decoration: none; font-weight: 600; font-size: .92rem; }
.links a:hover { color: var(--accent); }
.theme-button, .menu-button {
  border: 1px solid var(--line); color: var(--ink); background: var(--surface);
  border-radius: 999px; min-width: 42px; height: 42px; cursor: pointer;
}
.menu-button { display: none; padding: 0 15px; }

.hero { padding: 90px 0 95px; }
.hero-grid { display: grid; grid-template-columns: 1.3fr .72fr; align-items: center; gap: 76px; }
.eyebrow {
  text-transform: uppercase; letter-spacing: .16em; font-size: .76rem;
  color: var(--accent); font-weight: 800; margin: 0 0 15px;
}
.eyebrow.pale { color: #9edac9; }
h1, h2 {
  font-family: "Libre Franklin", system-ui, sans-serif;
  letter-spacing: -.05em; line-height: 1.04; margin: 0;
}
h1 { font-size: clamp(3.5rem, 8vw, 7rem); max-width: 850px; }
h2 { font-size: clamp(2.3rem, 5vw, 4.2rem); }
h3 { line-height: 1.25; }
.intro { color: var(--muted); max-width: 760px; font-size: clamp(1.12rem, 2vw, 1.4rem); margin: 28px 0; }
.actions { display: flex; gap: 12px; flex-wrap: wrap; margin: 34px 0; }
.button {
  display: inline-flex; min-height: 49px; align-items: center; justify-content: center;
  padding: 0 21px; border-radius: 999px; text-decoration: none; font-weight: 700;
}
.button.primary { background: var(--accent); color: #fff; }
.button.secondary { border: 1px solid var(--ink); }
.affiliations { display: flex; flex-wrap: wrap; gap: 10px; }
.affiliations span { color: var(--muted); border: 1px solid var(--line); border-radius: 999px; padding: 7px 12px; font-size: .9rem; }

.portrait-card { margin: 0; background: var(--surface); border: 1px solid var(--line); border-radius: 28px; overflow: hidden; box-shadow: var(--shadow); transform: rotate(1.5deg); }
.portrait-card img { width: 100%; aspect-ratio: 4/5; object-fit: cover; object-position: 50% 38%; }
.portrait-card figcaption { padding: 22px; }
.portrait-card strong, .portrait-card span { display: block; }
.portrait-card span { color: var(--muted); margin-top: 4px; font-size: .92rem; }

.section { padding: 100px 0; }
.split { display: grid; grid-template-columns: .82fr 1.18fr; gap: 85px; }
.copy { color: var(--muted); font-size: 1.15rem; }
.copy p:first-child { margin-top: 0; }
.tint { background: var(--tint); }
.grid.cards { display: grid; grid-template-columns: repeat(2, 1fr); gap: 18px; margin-top: 42px; }
.card { background: var(--surface); border: 1px solid var(--line); border-radius: 21px; padding: 28px; }
.card > span { color: var(--accent); font-weight: 800; }
.card h3 { margin: 30px 0 10px; font-size: 1.3rem; }
.card p { color: var(--muted); margin-bottom: 0; }

.heading-row { display: flex; align-items: end; justify-content: space-between; gap: 20px; }
.status { background: var(--accent); color: #fff; border-radius: 999px; padding: 7px 12px; font-weight: 700; font-size: .82rem; }
.feature { display: grid; grid-template-columns: 1fr .8fr; gap: 50px; margin-top: 42px; border: 1px solid var(--line); border-radius: 26px; padding: 34px; background: var(--surface); }
.feature-lede { font-size: 1.22rem; margin-top: 0; }
.check-list { list-style: none; padding: 0; margin: 28px 0 0; }
.check-list li { padding: 9px 0 9px 28px; position: relative; color: var(--muted); }
.check-list li::before { content: "✓"; position: absolute; left: 0; color: var(--accent); font-weight: 800; }
.feature-visual { display: grid; gap: 12px; }
.feature-visual div { background: var(--tint); border-radius: 17px; padding: 20px; }
.feature-visual strong, .feature-visual span { display: block; }
.feature-visual span { color: var(--muted); font-size: .9rem; }

.dark { background: var(--dark); color: #f4fbf8; }
.inline-link { color: #9edac9; text-decoration: none; font-weight: 700; }
.publication-list { margin-top: 42px; border-top: 1px solid rgba(255,255,255,.18); }
.publication-list article { display: grid; grid-template-columns: 95px 1fr; gap: 25px; padding: 28px 0; border-bottom: 1px solid rgba(255,255,255,.18); }
.publication-list h3 { margin: 0 0 7px; }
.publication-list p { color: #bed0ca; margin: 0; }
.year { color: #9edac9; font-weight: 800; }

.timeline article { display: grid; grid-template-columns: 105px 1fr; gap: 25px; border-top: 1px solid var(--line); padding: 24px 0; }
.timeline article:first-child { border-top: 0; padding-top: 0; }
.timeline span { color: var(--accent); font-weight: 800; }
.timeline h3 { margin: 0 0 6px; }
.timeline p { color: var(--muted); margin: 0; }

.contact-grid { display: grid; grid-template-columns: 1fr .8fr; gap: 70px; align-items: center; }
.contact-copy { color: var(--muted); max-width: 650px; font-size: 1.1rem; }
.contact-card { background: var(--surface); border: 1px solid var(--line); border-radius: 22px; padding: 29px; }
.small-label { text-transform: uppercase; letter-spacing: .14em; font-size: .72rem; color: var(--muted); font-weight: 800; margin: 0; }
.email { display: block; font-weight: 800; font-size: 1.08rem; margin: 7px 0 13px; overflow-wrap: anywhere; }
.contact-card > p:not(.small-label) { color: var(--muted); }

footer { background: var(--dark); color: #cad9d4; padding: 28px 0; }
.footer-row { display: flex; justify-content: space-between; gap: 20px; font-size: .87rem; }
.footer-row p { margin: 0; }

.reveal { opacity: 0; transform: translateY(20px); transition: opacity .7s ease, transform .7s ease; }
.reveal.visible { opacity: 1; transform: translateY(0); }

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .reveal { opacity: 1; transform: none; transition: none; }
}
@media (max-width: 900px) {
  .hero-grid, .split, .feature, .contact-grid { grid-template-columns: 1fr; gap: 44px; }
  .portrait-card { max-width: 520px; transform: none; }
  .links {
    display: none; position: absolute; left: 0; right: 0; top: 76px;
    background: var(--bg); border-bottom: 1px solid var(--line); padding: 22px;
    flex-direction: column; margin: 0;
  }
  .links.open { display: flex; }
  .menu-button { display: block; margin-left: auto; }
}
@media (max-width: 620px) {
  .container { width: min(calc(100% - 28px), var(--max)); }
  .hero { padding: 62px 0 72px; }
  h1 { font-size: 3.35rem; }
  .section { padding: 72px 0; }
  .grid.cards { grid-template-columns: 1fr; }
  .heading-row { align-items: flex-start; flex-direction: column; }
  .publication-list article, .timeline article { grid-template-columns: 1fr; gap: 5px; }
  .feature { padding: 23px; }
  .footer-row { flex-direction: column; }
}