:root {
  --bg: #fbfbf9;
  --surface: #ffffff;
  --ink: #242424;
  --muted: #656565;
  --faint: #f1f1ed;
  --line: #deded8;
  --accent: #6d173c;
  --accent-2: #9a2e5a;
  --accent-soft: #f8edf2;
  --nav-bg: rgba(251,251,249,.93);
  --shadow: 0 14px 38px rgba(20, 20, 20, .09);
  --max: 970px;
}

html[data-theme="dark"] {
  --bg: #151515;
  --surface: #1d1d1d;
  --ink: #eeeeeb;
  --muted: #b0b0aa;
  --faint: #232323;
  --line: #383834;
  --accent: #e383ae;
  --accent-2: #f0a4c4;
  --accent-soft: #34202a;
  --nav-bg: rgba(21,21,21,.94);
  --shadow: 0 16px 42px rgba(0,0,0,.28);
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: Inter, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  font-size: 15.7px;
  line-height: 1.72;
  transition: background .25s ease, color .25s ease;
}
a { color: inherit; }
button, input, textarea, select { font: inherit; }

.topbar {
  position: sticky;
  top: 0;
  z-index: 30;
  background: var(--nav-bg);
  backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--line);
}
.nav-shell {
  width: min(calc(100% - 36px), 1080px);
  min-height: 62px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 28px;
}
.wordmark {
  text-decoration: none;
  font-family: Lora, Georgia, serif;
  font-size: 1.08rem;
  white-space: nowrap;
}
.wordmark strong { font-weight: 600; }
.nav-links { display: flex; align-items: center; gap: 25px; }
.nav-links a {
  text-decoration: none;
  color: var(--muted);
  font-size: .82rem;
  font-weight: 600;
  padding: 20px 0 18px;
  border-bottom: 2px solid transparent;
  transition: color .2s ease, border-color .2s ease;
}
.nav-links a:hover, .nav-links a.active { color: var(--accent); border-color: var(--accent); }
.theme-toggle, .menu-toggle {
  border: 0;
  color: var(--ink);
  background: transparent;
  cursor: pointer;
}
.theme-toggle { width: 34px; height: 34px; border-radius: 50%; }
.theme-toggle:hover { background: var(--faint); }
.menu-toggle { display: none; font-size: 1.25rem; }
.scroll-progress { height: 2px; background: transparent; }
.scroll-progress span { display: block; width: 0; height: 100%; background: var(--accent); }

.page-shell { width: min(calc(100% - 40px), var(--max)); margin: 0 auto; }
.section-anchor { scroll-margin-top: 85px; }
.intro-section { padding: 74px 0 52px; }
.intro-heading { margin-bottom: 38px; }
.intro-heading h1 {
  margin: 0;
  font-family: Lora, Georgia, serif;
  font-size: clamp(2.4rem, 6vw, 4.15rem);
  line-height: 1.08;
  letter-spacing: -.035em;
  font-weight: 600;
}
.intro-heading h1 em { font-weight: 500; color: var(--accent); }
.research-line {
  margin: 12px 0 0;
  color: var(--muted);
  font-size: .96rem;
}
.research-line span { color: var(--accent); margin: 0 7px; }

.profile-layout {
  display: grid;
  grid-template-columns: 265px 1fr;
  gap: 46px;
  align-items: start;
}
.profile-panel { position: sticky; top: 95px; }
.portrait-wrap { margin: 0 0 18px; }
.portrait {
  width: 100%;
  aspect-ratio: 1.08 / 1;
  object-fit: cover;
  object-position: center 44%;
  display: block;
  border-radius: 5px;
  box-shadow: var(--shadow);
  border: 1px solid var(--line);
  background: var(--surface);
  image-rendering: auto;
}
.profile-meta { font-size: .85rem; color: var(--muted); line-height: 1.55; }
.profile-meta p { margin: 0 0 5px; }
.profile-meta strong { color: var(--ink); }
.profile-meta a { color: var(--accent); text-decoration: none; overflow-wrap: anywhere; }
.quick-links { display: flex; gap: 8px; flex-wrap: wrap; margin-top: 16px; }
.quick-links a {
  text-decoration: none;
  border: 1px solid var(--line);
  padding: 5px 10px;
  border-radius: 4px;
  color: var(--accent);
  font-size: .75rem;
  font-weight: 700;
  background: var(--surface);
}
.quick-links a:hover { border-color: var(--accent); }
.bio-copy { font-size: 1rem; }
.bio-copy p { margin: 0 0 18px; }
.bio-copy .lead { font-size: 1.14rem; line-height: 1.65; }
.text-link { color: var(--accent); text-decoration-thickness: 1px; text-underline-offset: 3px; }

.content-section { padding: 38px 0 46px; border-top: 1px solid var(--line); }
.section-title-row { display: flex; align-items: center; gap: 18px; margin-bottom: 26px; }
.section-title-row h2, .contact-copy h2 {
  font-family: Lora, Georgia, serif;
  font-size: clamp(1.65rem, 3.5vw, 2.25rem);
  line-height: 1.2;
  margin: 0;
  font-weight: 600;
}
.title-rule { height: 1px; background: var(--line); flex: 1; }
.section-note { color: var(--muted); max-width: 780px; margin: -8px 0 28px; }

.news-table { border-top: 1px solid var(--line); }
.news-item {
  display: grid;
  grid-template-columns: 125px 1fr;
  gap: 25px;
  border-bottom: 1px solid var(--line);
  padding: 15px 0;
}
.news-item time { font-weight: 700; color: var(--accent); font-size: .84rem; }
.news-item p { margin: 0; }

.publication-list { list-style: none; padding: 0; margin: 0; }
.publication-row {
  display: grid;
  grid-template-columns: 92px 1fr;
  gap: 22px;
  padding: 23px 0;
  border-bottom: 1px solid var(--line);
}
.pub-badge {
  align-self: start;
  background: var(--accent);
  color: white;
  border-radius: 4px;
  padding: 4px 7px;
  text-align: center;
  font-size: .69rem;
  font-weight: 800;
  letter-spacing: .04em;
}
.pub-main h3 { margin: 0 0 5px; font-size: 1rem; line-height: 1.42; }
.authors, .venue { margin: 2px 0; color: var(--muted); font-size: .85rem; }
.authors strong { color: var(--ink); }
.pub-links { display: flex; gap: 6px; flex-wrap: wrap; margin-top: 10px; }
.pub-links span {
  display: inline-block;
  color: var(--accent);
  border: 1px solid color-mix(in srgb, var(--accent) 35%, var(--line));
  border-radius: 3px;
  padding: 2px 8px;
  font-size: .68rem;
  font-weight: 700;
}
.muted-placeholder { opacity: .72; }

.research-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 14px; }
.research-card {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 6px;
  padding: 22px;
  min-height: 230px;
  box-shadow: 0 4px 16px rgba(0,0,0,.025);
}
.research-card:hover { border-color: color-mix(in srgb, var(--accent) 45%, var(--line)); }
.research-no { color: var(--accent); font-size: .72rem; font-weight: 800; }
.research-card h3 { font-family: Lora, Georgia, serif; margin: 30px 0 10px; font-size: 1.18rem; line-height: 1.35; }
.research-card p { color: var(--muted); font-size: .87rem; margin: 0; }

.simple-columns { display: grid; grid-template-columns: repeat(3, 1fr); gap: 30px; }
.simple-columns article { border-left: 2px solid var(--accent-soft); padding-left: 18px; }
.simple-columns h3, .subheading { font-family: Lora, Georgia, serif; font-size: 1.08rem; margin: 0 0 8px; }
.simple-columns p { color: var(--muted); margin: 0; font-size: .88rem; }

.career-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 50px; }
.subheading { color: var(--accent); margin-bottom: 15px; }
.career-list { border-top: 1px solid var(--line); }
.career-list article { display: grid; grid-template-columns: 105px 1fr; gap: 15px; border-bottom: 1px solid var(--line); padding: 14px 0; }
.career-list time { color: var(--muted); font-size: .78rem; font-weight: 600; }
.career-list strong { display: block; font-size: .88rem; }
.career-list span { display: block; color: var(--muted); font-size: .79rem; margin-top: 2px; line-height: 1.5; }

.contact-section { display: grid; grid-template-columns: 1fr .88fr; gap: 50px; align-items: center; padding-bottom: 60px; }
.contact-copy p { color: var(--muted); margin-bottom: 0; }
.contact-actions { display: flex; justify-content: flex-end; gap: 9px; flex-wrap: wrap; }
.contact-btn {
  text-decoration: none;
  border: 1px solid var(--line);
  padding: 8px 12px;
  border-radius: 4px;
  font-size: .77rem;
  font-weight: 700;
  background: var(--surface);
}
.contact-btn.primary { background: var(--accent); border-color: var(--accent); color: white; }
.contact-btn:hover { transform: translateY(-1px); }

.site-footer { border-top: 1px solid var(--line); padding: 23px 0 32px; color: var(--muted); font-size: .74rem; }
.footer-inner { display: flex; justify-content: space-between; gap: 16px; }
.back-to-top {
  position: fixed;
  right: 22px;
  bottom: 22px;
  width: 42px;
  height: 42px;
  display: grid;
  place-items: center;
  text-decoration: none;
  background: var(--ink);
  color: var(--bg);
  border-radius: 50%;
  box-shadow: var(--shadow);
  opacity: 0;
  pointer-events: none;
  transform: translateY(10px);
  transition: .2s ease;
}
.back-to-top.visible { opacity: 1; pointer-events: auto; transform: none; }

@media (max-width: 860px) {
  .menu-toggle { display: block; }
  .nav-links {
    display: none;
    position: absolute;
    top: 63px;
    left: 0;
    right: 0;
    padding: 10px 24px 20px;
    background: var(--nav-bg);
    border-bottom: 1px solid var(--line);
    flex-direction: column;
    align-items: stretch;
    gap: 0;
  }
  .nav-links.open { display: flex; }
  .nav-links a { padding: 10px 0; border-bottom: 0; }
  .theme-toggle { margin-top: 5px; }
  .profile-layout { grid-template-columns: 215px 1fr; gap: 30px; }
  .research-grid, .simple-columns { grid-template-columns: 1fr; }
  .research-card { min-height: auto; }
  .research-card h3 { margin-top: 18px; }
}

@media (max-width: 650px) {
  body { font-size: 15px; }
  .page-shell { width: min(calc(100% - 28px), var(--max)); }
  .intro-section { padding-top: 48px; }
  .profile-layout { grid-template-columns: 1fr; }
  .profile-panel { position: static; }
  .portrait { width: min(100%, 310px); aspect-ratio: 1.05 / 1; }
  .profile-meta { max-width: 320px; }
  .news-item { grid-template-columns: 88px 1fr; gap: 15px; }
  .publication-row { grid-template-columns: 68px 1fr; gap: 15px; }
  .career-grid { grid-template-columns: 1fr; gap: 35px; }
  .contact-section { grid-template-columns: 1fr; gap: 25px; }
  .contact-actions { justify-content: flex-start; }
  .footer-inner { flex-direction: column; }
  .research-line span { margin: 0 3px; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { transition: none !important; }
}

.nav-actions { display: flex; align-items: center; gap: 6px; }
.lang-toggle {
  border: 1px solid var(--line);
  background: var(--surface);
  color: var(--muted);
  border-radius: 999px;
  padding: 5px 9px;
  font-size: .69rem;
  font-weight: 800;
  letter-spacing: .035em;
  cursor: pointer;
  line-height: 1;
  transition: border-color .2s ease, color .2s ease, background .2s ease;
}
.lang-toggle:hover { border-color: var(--accent); }
.lang-toggle .active { color: var(--accent); }
.lang-sep { opacity: .45; margin: 0 2px; }
@media (max-width: 860px) {
  .nav-actions { margin-top: 10px; padding-top: 10px; border-top: 1px solid var(--line); justify-content: flex-start; }
  .theme-toggle { margin-top: 0; }
}