:root {
  --bg: #f7f4ee;
  --panel: #fffdfa;
  --ink: #171717;
  --muted: #67615b;
  --line: #e5ddd1;
  --accent: #7a3f26;
  --accent-2: #c47a4b;
  --shadow: 0 22px 70px rgba(47, 31, 20, .12);
  --radius: 28px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 90px; }
body {
  margin: 0;
  font-family: Inter, system-ui, -apple-system, Segoe UI, sans-serif;
  background: radial-gradient(circle at top left, #fff4df, transparent 35%), var(--bg);
  color: var(--ink);
  line-height: 1.6;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 10;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 18px clamp(20px, 5vw, 72px);
  backdrop-filter: blur(18px);
  background: rgba(247, 244, 238, .82);
  border-bottom: 1px solid rgba(229, 221, 209, .8);
}
.brand {
  display: grid;
  place-items: center;
  width: 46px;
  height: 46px;
  border-radius: 50%;
  background: var(--ink);
  color: white;
  text-decoration: none;
  font-weight: 800;
  letter-spacing: -.05em;
}
.nav { display: flex; gap: 22px; }
.nav a { color: var(--muted); text-decoration: none; font-weight: 650; font-size: .95rem; }
.nav a:hover { color: var(--accent); }
.nav-toggle { display: none; background: none; border: 0; font-size: 1.5rem; cursor: pointer; }

.section { padding: 88px clamp(20px, 6vw, 90px); }
.hero {
  display: grid;
  grid-template-columns: minmax(0, 1.35fr) minmax(300px, .65fr);
  gap: 34px;
  align-items: center;
  min-height: 78vh;
}
.eyebrow { text-transform: uppercase; letter-spacing: .16em; color: var(--accent); font-weight: 800; font-size: .78rem; }
h1, h2, h3, p { margin-top: 0; }
h1 { font-size: clamp(3rem, 8vw, 6.6rem); line-height: .92; letter-spacing: -.075em; margin-bottom: 26px; }
h2 { font-size: clamp(2rem, 4vw, 3.3rem); line-height: 1; letter-spacing: -.055em; margin-bottom: 22px; }
h3 { font-size: 1.12rem; line-height: 1.25; margin-bottom: 8px; }
.lead { font-size: clamp(1.12rem, 2vw, 1.45rem); max-width: 770px; color: #38332f; }
.cta-row { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 30px; }
.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--line);
  border-radius: 999px;
  padding: 13px 18px;
  text-decoration: none;
  color: var(--ink);
  font-weight: 750;
  background: rgba(255, 255, 255, .55);
  transition: transform .2s ease, box-shadow .2s ease;
}
.button.primary { background: var(--accent); border-color: var(--accent); color: white; }
.button:hover { transform: translateY(-1px); box-shadow: 0 12px 25px rgba(47, 31, 20, .11); }
.hero-card, .card, .publication, .timeline-item, .contact-panel {
  background: rgba(255, 253, 250, .86);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}
.hero-card { padding: 28px; }

/* Profile image: place an 800 x 800 square photo named profile.jpg next to index.html. */
.avatar {
  position: relative;
  overflow: hidden;
  width: 164px;
  height: 164px;
  border-radius: 30px;
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  color: white;
  display: grid;
  place-items: center;
  font-size: 2.5rem;
  font-weight: 800;
  letter-spacing: -.08em;
  margin-bottom: 26px;
}
.avatar-fallback { position: relative; z-index: 0; }
.profile-photo {
  position: absolute;
  inset: 0;
  z-index: 1;
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center 30%;
  background: var(--panel);
}
.profile-photo[hidden] { display: none; }
.quick-list { list-style: none; padding: 0; margin: 24px 0 0; display: grid; gap: 12px; }
.quick-list li { display: flex; justify-content: space-between; align-items: baseline; gap: 20px; border-top: 1px solid var(--line); padding-top: 12px; }
.quick-list span { color: var(--muted); font-weight: 650; }
.quick-list a, .timeline-item a { color: var(--accent); font-weight: 700; text-decoration-thickness: 1px; text-underline-offset: 3px; }

.two-column { display: grid; grid-template-columns: .55fr 1.45fr; gap: 48px; }
.card-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 18px; }
.card { padding: 28px; }
.card p, .publication p, .timeline-item p, .contact-panel p { color: var(--muted); }
.section-heading { max-width: 760px; margin-bottom: 28px; }
.publication-list { display: grid; gap: 14px; }
.publication { padding: 24px 28px; }
.publication.featured { border-color: rgba(122, 63, 38, .35); background: linear-gradient(135deg, rgba(255, 253, 250, .94), rgba(255, 244, 223, .88)); }
.tag { display: inline-block; margin-bottom: 10px; border-radius: 999px; background: #f1ddca; color: var(--accent); padding: 4px 10px; font-weight: 800; font-size: .76rem; }
.clickable-publication a { display: block; color: inherit; text-decoration: none; }
.clickable-publication { transition: transform .2s ease; }
.clickable-publication:hover { transform: translateY(-2px); }
.clickable-publication a:focus-visible { outline: 3px solid var(--accent-2); border-radius: var(--radius); }

.timeline { display: grid; gap: 16px; }
.timeline-item { position: relative; padding: 24px 28px 24px 118px; }
.timeline-item span { position: absolute; left: 24px; top: 27px; color: var(--accent); font-weight: 800; font-size: .84rem; line-height: 1.3; }
.timeline-item h3 { margin: 0; }
.timeline-item p { margin-top: .35rem; margin-bottom: 0; }
.three-cards { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 18px; }
.card.accent { background: var(--ink); color: white; }
.card.accent p { color: #ded8cf; }
.contact-panel { display: grid; grid-template-columns: 1fr auto; gap: 32px; align-items: center; margin: 30px clamp(20px, 6vw, 90px) 80px; padding: 42px; }
.contact-links { display: grid; gap: 10px; }
.contact-links a { color: var(--accent); font-weight: 800; text-decoration: none; }
.footer { padding: 26px clamp(20px, 6vw, 90px); color: var(--muted); border-top: 1px solid var(--line); }

@media (max-width: 850px) {
  .nav { display: none; position: absolute; right: 20px; top: 72px; background: var(--panel); border: 1px solid var(--line); border-radius: 20px; padding: 18px; box-shadow: var(--shadow); flex-direction: column; }
  .nav.open { display: flex; }
  .nav-toggle { display: block; }
  .hero, .two-column, .three-cards, .contact-panel { grid-template-columns: 1fr; }
  .section { padding: 60px 20px; }
  .contact-panel { margin: 20px; }
  .card-grid { grid-template-columns: 1fr; }
  .timeline-item { padding-left: 28px; }
  .timeline-item span { position: static; display: block; margin-bottom: 8px; }
}
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .button, .clickable-publication { transition: none; }
}