:root {
  --bg: #f7f6f1;
  --bg-elev: #ffffff;
  --ink: #1b1b1c;
  --ink-soft: #4a4a4f;
  --ink-mute: #8a8a8f;
  --rule: #e6e3da;
  --rule-soft: #efece4;
  --accent: #4f46e5;
  --accent-soft: #eef0ff;
  --venue: #6d6a5f;
  --shadow: 0 1px 0 rgba(20, 20, 30, 0.04), 0 8px 24px -12px rgba(20, 20, 30, 0.08);
  --serif: 'Instrument Serif', 'Iowan Old Style', 'Apple Garamond', Georgia, serif;
  --sans: 'Inter', system-ui, -apple-system, 'Segoe UI', Roboto, sans-serif;
  --mono: 'JetBrains Mono', ui-monospace, 'SF Mono', Menlo, monospace;
  --max: 760px;
  --gutter: clamp(20px, 5vw, 40px);
}

[data-theme='dark'] {
  --bg: #0f0f11;
  --bg-elev: #16161a;
  --ink: #ececea;
  --ink-soft: #b9b9b6;
  --ink-mute: #76767a;
  --rule: #26262b;
  --rule-soft: #1c1c20;
  --accent: #a5a8ff;
  --accent-soft: #1a1b2e;
  --venue: #9e9b8e;
  --shadow: 0 1px 0 rgba(0, 0, 0, 0.4), 0 12px 32px -16px rgba(0, 0, 0, 0.6);
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: var(--sans);
  font-size: 16.5px;
  line-height: 1.65;
  font-feature-settings: 'ss01', 'cv11';
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  transition: background 0.25s ease, color 0.25s ease;
}

a {
  color: var(--ink);
  text-decoration: none;
  border-bottom: 1px solid var(--rule);
  transition: color 0.15s ease, border-color 0.15s ease;
}
a:hover { color: var(--accent); border-bottom-color: var(--accent); }

p { margin: 0 0 1em; }

::selection { background: var(--accent); color: #fff; }

/* ---------- Nav ---------- */
.nav {
  position: sticky;
  top: 0;
  z-index: 50;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 14px var(--gutter);
  background: color-mix(in srgb, var(--bg) 88%, transparent);
  backdrop-filter: saturate(140%) blur(10px);
  -webkit-backdrop-filter: saturate(140%) blur(10px);
  border-bottom: 1px solid transparent;
  transition: border-color 0.25s ease;
}
.nav.scrolled { border-bottom-color: var(--rule); }
.nav-brand {
  font-family: var(--serif);
  font-size: 19px;
  letter-spacing: 0.01em;
  border: 0;
}
.nav-links {
  display: flex;
  align-items: center;
  gap: 22px;
}
.nav-links a {
  border: 0;
  font-size: 14px;
  color: var(--ink-soft);
  letter-spacing: 0.02em;
}
.nav-links a:hover { color: var(--ink); }
.theme-toggle {
  background: transparent;
  border: 1px solid var(--rule);
  border-radius: 999px;
  width: 32px;
  height: 32px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  color: var(--ink-soft);
  cursor: pointer;
  transition: border-color 0.15s ease, color 0.15s ease, background 0.15s ease;
}
.theme-toggle:hover { color: var(--ink); border-color: var(--ink-mute); }
.theme-toggle svg { width: 14px; height: 14px; }
.theme-toggle .sun { display: none; }
[data-theme='dark'] .theme-toggle .moon { display: none; }
[data-theme='dark'] .theme-toggle .sun { display: block; }

@media (max-width: 560px) {
  .nav-links { gap: 14px; }
  .nav-links a.hide-sm { display: none; }
}

/* ---------- Container ---------- */
.wrap {
  max-width: var(--max);
  margin: 0 auto;
  padding: 0 var(--gutter);
}

section { padding: 88px 0 24px; scroll-margin-top: 60px; }
section:first-of-type { padding-top: 64px; }

.eyebrow {
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--ink-mute);
  margin: 0 0 24px;
  display: flex;
  align-items: center;
  gap: 14px;
}
.eyebrow::after {
  content: '';
  flex: 1;
  height: 1px;
  background: var(--rule);
}

/* ---------- Hero ---------- */
.hero {
  padding: 96px 0 32px;
}
.hero-name {
  font-family: var(--serif);
  font-weight: 400;
  font-size: clamp(48px, 9vw, 88px);
  line-height: 0.98;
  letter-spacing: -0.015em;
  margin: 0 0 18px;
}
.hero-name .accent {
  font-style: italic;
  color: var(--accent);
}
.hero-tag {
  font-size: clamp(17px, 2.2vw, 20px);
  color: var(--ink-soft);
  max-width: 56ch;
  margin: 0 0 32px;
  line-height: 1.5;
}
.hero-tag em {
  font-family: var(--serif);
  font-style: italic;
  color: var(--ink);
  font-size: 1.08em;
}
.chips {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}
.chip {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 7px 13px 7px 11px;
  border: 1px solid var(--rule);
  border-radius: 999px;
  font-size: 13.5px;
  color: var(--ink-soft);
  background: var(--bg-elev);
  transition: border-color 0.15s ease, color 0.15s ease, transform 0.15s ease;
}
.chip:hover { color: var(--ink); border-color: var(--ink-mute); transform: translateY(-1px); }
.chip svg { width: 14px; height: 14px; }

/* ---------- About ---------- */
.about-grid {
  display: grid;
  grid-template-columns: 1fr 156px;
  gap: 36px;
  align-items: start;
}
.about-grid p { color: var(--ink-soft); }
.about-grid p:last-child { margin-bottom: 0; }
.avatar {
  width: 156px;
  height: 156px;
  border-radius: 50%;
  object-fit: cover;
  border: 1px solid var(--rule);
  box-shadow: var(--shadow);
}
@media (max-width: 560px) {
  .about-grid { grid-template-columns: 1fr; gap: 24px; }
  .avatar { width: 116px; height: 116px; order: -1; }
}

/* ---------- Research themes ---------- */
.themes {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
}
.theme {
  padding: 22px 20px;
  background: var(--bg-elev);
  border: 1px solid var(--rule);
  border-radius: 14px;
  transition: border-color 0.2s ease, transform 0.2s ease;
}
.theme:hover { border-color: var(--ink-mute); }
.theme-name {
  font-family: var(--serif);
  font-size: 22px;
  margin: 0 0 6px;
  letter-spacing: -0.005em;
}
.theme-desc {
  font-size: 14px;
  color: var(--ink-soft);
  margin: 0;
  line-height: 1.55;
}
@media (max-width: 720px) {
  .themes { grid-template-columns: 1fr; }
}

/* ---------- Publications ---------- */
.pub-year {
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 0.12em;
  color: var(--ink-mute);
  margin: 28px 0 14px;
  padding-top: 18px;
  border-top: 1px solid var(--rule-soft);
}
.pub-year:first-child { padding-top: 0; border-top: 0; margin-top: 0; }
.pub {
  display: block;
  padding: 14px 0;
  border: 0;
}
.pub-title {
  font-size: 17px;
  font-weight: 500;
  margin: 0 0 4px;
  color: var(--ink);
  letter-spacing: -0.005em;
  line-height: 1.4;
}
.pub-title a {
  border: 0;
  background-image: linear-gradient(var(--accent), var(--accent));
  background-repeat: no-repeat;
  background-size: 0 1px;
  background-position: 0 100%;
  transition: background-size 0.2s ease, color 0.15s ease;
}
.pub-title a:hover { background-size: 100% 1px; color: var(--accent); }
.pub-authors {
  font-size: 14px;
  color: var(--ink-soft);
  margin: 0 0 6px;
  line-height: 1.55;
}
.pub-authors .me { color: var(--ink); font-weight: 500; }
.pub-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  align-items: center;
  font-size: 13px;
}
.venue {
  font-family: var(--serif);
  font-style: italic;
  font-size: 15px;
  color: var(--venue);
}
.badge {
  display: inline-block;
  padding: 2px 8px;
  font-family: var(--mono);
  font-size: 10.5px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  background: var(--accent-soft);
  color: var(--accent);
  border-radius: 4px;
}
.pub-links {
  display: flex;
  gap: 14px;
  margin-top: 6px;
}
.pub-links a {
  border: 0;
  font-size: 13px;
  color: var(--ink-mute);
  font-family: var(--mono);
  letter-spacing: 0.02em;
}
.pub-links a:hover { color: var(--accent); }

.pubs-more {
  margin-top: 32px;
  font-size: 14px;
  color: var(--ink-soft);
}

.pub-press {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px 12px;
  margin-top: 10px;
  padding: 8px 12px;
  border-left: 2px solid var(--accent);
  background: var(--accent-soft);
  border-radius: 0 6px 6px 0;
  font-size: 13px;
}
.pub-press-label {
  font-family: var(--mono);
  font-size: 10.5px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--accent);
  margin-right: 2px;
}
.pub-press a {
  border: 0;
  color: var(--ink);
  font-weight: 500;
}
.pub-press a:hover { color: var(--accent); }
.pub-press .sep {
  color: var(--ink-mute);
  font-size: 11px;
}

/* ---------- Experience ---------- */
.timeline { list-style: none; padding: 0; margin: 0; }
.tl-item {
  display: grid;
  grid-template-columns: 110px 1fr;
  gap: 22px;
  padding: 18px 0;
  border-top: 1px solid var(--rule-soft);
}
.tl-item:first-child { border-top: 0; }
.tl-time {
  font-family: var(--mono);
  font-size: 12px;
  color: var(--ink-mute);
  letter-spacing: 0.04em;
  padding-top: 4px;
}
.tl-role {
  font-size: 16px;
  margin: 0 0 2px;
  color: var(--ink);
}
.tl-org {
  font-family: var(--serif);
  font-style: italic;
  font-size: 15px;
  color: var(--ink-soft);
  margin: 0 0 6px;
}
.tl-desc {
  font-size: 14.5px;
  color: var(--ink-soft);
  margin: 0;
  line-height: 1.55;
}
@media (max-width: 560px) {
  .tl-item { grid-template-columns: 1fr; gap: 4px; }
  .tl-time { padding-top: 0; }
}

/* ---------- Footer ---------- */
footer {
  margin-top: 80px;
  padding: 36px 0 56px;
  border-top: 1px solid var(--rule);
  font-size: 13px;
  color: var(--ink-mute);
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 16px;
}
footer a { border: 0; color: var(--ink-mute); }
footer a:hover { color: var(--ink); }

/* ---------- Reveal ---------- */
.reveal {
  opacity: 0;
  transform: translateY(12px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}
.reveal.in {
  opacity: 1;
  transform: none;
}
@media (prefers-reduced-motion: reduce) {
  .reveal { opacity: 1; transform: none; transition: none; }
  html { scroll-behavior: auto; }
}

/* ---------- Desktop ---------- */
@media (min-width: 1024px) {
  :root {
    --max: 1000px;
    --gutter: 56px;
  }
  body { font-size: 17px; }

  .hero { padding: 120px 0 56px; }
  .hero-name { font-size: clamp(72px, 8.5vw, 112px); margin-bottom: 22px; }
  .hero-tag { font-size: 21px; max-width: 60ch; margin-bottom: 40px; }

  section { padding: 112px 0 28px; }
  .eyebrow { margin-bottom: 32px; }

  .about-grid { grid-template-columns: 1fr 216px; gap: 56px; }
  .avatar { width: 216px; height: 216px; }
  .about-grid p { max-width: 62ch; }

  .themes { gap: 22px; }
  .theme { padding: 28px 26px; }
  .theme-name { font-size: 24px; }

  .pub { padding: 18px 0; }
  .pub-title { font-size: 19px; max-width: 64ch; }
  .pub-authors { max-width: 84ch; }

  .tl-item { grid-template-columns: 140px 1fr; gap: 36px; padding: 22px 0; }
  .tl-role { font-size: 17px; }
  .tl-desc { max-width: 64ch; }
}