:root {
  --bg: #ffffff;
  --surface: #f7f8fa;
  --text: #202124;
  --muted: #70757d;
  --soft: #9aa0a6;
  --line: #e7e9ee;
  --accent: #1f5fbf;
  --accent-hover: #174b97;
  --max-width: 900px;
  --sans: Inter, ui-sans-serif, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, "Apple Color Emoji", "Segoe UI Emoji", sans-serif;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: var(--sans);
  font-size: 16px;
  line-height: 1.72;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

::selection { background: #dce8fb; }
a { color: var(--accent); text-decoration: none; }
a:hover { color: var(--accent-hover); text-decoration: underline; text-underline-offset: 3px; }
strong { font-weight: 650; }
p { margin: 0 0 0.85rem; }

.skip-link {
  position: fixed;
  left: 16px;
  top: -48px;
  z-index: 999;
  padding: 8px 12px;
  border-radius: 7px;
  background: #111;
  color: white;
  transition: top 0.15s ease;
}
.skip-link:focus { top: 12px; }

.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  border-bottom: 1px solid rgba(231, 233, 238, 0.88);
  background: rgba(255, 255, 255, 0.92);
  backdrop-filter: blur(12px);
}

.nav-shell {
  width: min(calc(100% - 36px), var(--max-width));
  min-height: 58px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
}

.brand {
  color: var(--text);
  font-weight: 680;
  letter-spacing: -0.01em;
}
.brand:hover { text-decoration: none; color: var(--text); }

.top-nav {
  display: flex;
  align-items: center;
  gap: 24px;
  font-size: 14px;
}
.top-nav a { color: #4a4d52; }
.top-nav a:hover { color: var(--accent); text-decoration: none; }

.page {
  width: min(calc(100% - 36px), var(--max-width));
  margin: 0 auto;
}

.hero {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 190px;
  align-items: center;
  gap: 52px;
  padding: 66px 0 30px;
}

.eyebrow {
  margin: 0 0 5px;
  color: var(--muted);
  font-size: 12px;
  font-weight: 650;
  letter-spacing: 0.11em;
  text-transform: uppercase;
}

.hero h1 {
  margin: 0;
  color: #16181b;
  font-size: clamp(2.5rem, 6vw, 4rem);
  line-height: 1.03;
  letter-spacing: -0.045em;
  font-weight: 760;
}

.hero-role {
  margin: 15px 0 7px;
  color: #4d5156;
  font-size: 17px;
}

.hero-links {
  display: flex;
  flex-wrap: wrap;
  gap: 7px;
  align-items: center;
  margin-top: 10px;
  font-size: 15px;
}
.hero-links span { color: #c2c5ca; }

.portrait-wrap {
  margin: 0;
  justify-self: end;
}
.portrait {
  width: 176px;
  height: 176px;
  display: block;
  object-fit: cover;
  border-radius: 50%;
  border: 1px solid var(--line);
  box-shadow: 0 10px 35px rgba(23, 31, 45, 0.08);
}

.section {
  padding: 32px 0;
  border-top: 1px solid var(--line);
  scroll-margin-top: 72px;
}
.section-about { border-top: 0; padding-top: 6px; }
.section h2 {
  margin: 0 0 18px;
  color: #16181b;
  font-size: 24px;
  line-height: 1.25;
  letter-spacing: -0.02em;
  font-weight: 710;
}
.section-icon { margin-right: 4px; font-size: 0.88em; }

.section-about p { max-width: 815px; }
.research-line {
  margin-top: 18px;
  color: #4f5358;
  font-size: 14px;
}
.research-line span {
  margin-right: 10px;
  color: #222;
  font-weight: 650;
}

.section-title-row {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 18px;
  margin-bottom: 18px;
}
.section-title-row h2 { margin-bottom: 0; }
.section-link,
.text-button {
  font-size: 13px;
}
.text-button {
  border: 0;
  padding: 0;
  background: transparent;
  color: var(--accent);
  font: inherit;
  cursor: pointer;
}
.text-button:hover { text-decoration: underline; text-underline-offset: 3px; }
.section-note {
  margin: -8px 0 20px;
  color: var(--muted);
  font-size: 13px;
}

.news-list {
  display: grid;
  gap: 8px;
}
.news-row {
  display: grid;
  grid-template-columns: 78px minmax(0, 1fr);
  gap: 14px;
  align-items: baseline;
}
.news-date {
  color: var(--muted);
  font-size: 13px;
  font-variant-numeric: tabular-nums;
}
.news-text { color: #313438; }
.news-row.is-extra[hidden] { display: none; }

.publication-groups {
  display: grid;
  gap: 38px;
}
.publication-group {
  min-width: 0;
}
.pub-group-head {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 20px;
  padding-bottom: 13px;
  border-bottom: 1px solid #dfe3e8;
}
.pub-group-title {
  margin: 0;
  color: #1a1d21;
  font-size: 18px;
  line-height: 1.35;
  font-weight: 720;
  letter-spacing: -0.015em;
}
.major-label {
  display: inline-block;
  margin-left: 8px;
  padding: 2px 7px;
  border: 1px solid #cfe0f6;
  border-radius: 999px;
  background: #f4f8fd;
  color: #245b9f;
  font-size: 10px;
  font-weight: 760;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  vertical-align: 2px;
}
.pub-group-description {
  margin: 3px 0 0;
  color: var(--muted);
  font-size: 12.5px;
}
.pub-count {
  flex: 0 0 auto;
  color: var(--soft);
  font-size: 12px;
}

.publication-list {
  display: grid;
  gap: 0;
}
.publication {
  display: grid;
  grid-template-columns: 76px minmax(0, 1fr);
  gap: 18px;
  padding: 22px 0;
  border-top: 1px solid #eef0f3;
}
.publication:first-child { border-top: 0; padding-top: 18px; }
.pub-year {
  padding-top: 3px;
  color: var(--muted);
  font-size: 13px;
  font-variant-numeric: tabular-nums;
}
.pub-title {
  margin: 0 0 5px;
  color: #1c1e21;
  font-size: 17px;
  line-height: 1.46;
  font-weight: 660;
}
.pub-authors,
.pub-venue,
.pub-note,
.pub-links {
  font-size: 14px;
  line-height: 1.58;
}
.pub-authors { color: #55595f; }
.pub-authors strong { color: #1c1e21; }
.pub-venue { margin-top: 2px; color: #30343a; }
.pub-note { margin-top: 2px; color: var(--muted); }
.pub-links { margin-top: 5px; }
.pub-links a { margin-right: 12px; font-weight: 550; }
.venue-badge {
  display: inline-block;
  margin-right: 7px;
  padding: 1px 7px;
  border: 1px solid #d7e2f3;
  border-radius: 5px;
  background: #f5f8fd;
  color: #27558f;
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.02em;
  vertical-align: 1px;
}

.honor-list { display: grid; gap: 17px; }
.honor-row {
  display: grid;
  grid-template-columns: 76px minmax(0, 1fr);
  gap: 18px;
}
.honor-year {
  color: var(--muted);
  font-size: 13px;
  font-variant-numeric: tabular-nums;
}
.honor-row p { margin: 0 0 4px; }
.muted { color: var(--muted); }

.compact-section { padding-bottom: 42px; }
.two-column-meta {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 44px;
}
.two-column-meta h2 { margin-bottom: 8px; font-size: 18px; }
.two-column-meta p { color: #55595f; font-size: 14px; }

.site-footer {
  border-top: 1px solid var(--line);
  background: #fafbfc;
}
.footer-inner {
  min-height: 88px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  color: var(--muted);
  font-size: 12px;
}

.error-box {
  padding: 14px 16px;
  border: 1px solid #f0d8d8;
  border-radius: 8px;
  background: #fff8f8;
  color: #8e3a3a;
  font-size: 14px;
}

.highlight-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 18px;
}
.highlight-card {
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: 14px;
  background: #fff;
}
.highlight-visual {
  position: relative;
  min-height: 150px;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 11px;
  overflow: hidden;
  font-size: 20px;
  font-weight: 760;
  letter-spacing: 0.08em;
}
.highlight-visual::before,
.highlight-visual::after {
  content: "";
  position: absolute;
  border-radius: 999px;
  border: 1px solid rgba(255,255,255,.32);
}
.highlight-visual::before { width: 190px; height: 190px; }
.highlight-visual::after { width: 108px; height: 108px; }
.highlight-visual span,
.highlight-visual b { position: relative; z-index: 2; }
.highlight-visual b { font-size: 17px; opacity: .72; }
.tactile-visual {
  color: #f5f8ff;
  background: linear-gradient(135deg, #334c7b, #7d8fb7 52%, #c7d1e5);
}
.simreal-visual {
  color: #f7f8f5;
  background: linear-gradient(135deg, #4c665c, #85958b 52%, #c7d0c9);
}
.highlight-body { padding: 15px 17px 17px; }
.highlight-kicker {
  margin: 0 0 3px;
  color: var(--muted);
  font-size: 11px;
  font-weight: 680;
  letter-spacing: .06em;
  text-transform: uppercase;
}
.highlight-body h3 {
  margin: 0 0 5px;
  font-size: 17px;
  line-height: 1.35;
  letter-spacing: -.01em;
}
.highlight-body p:not(.highlight-kicker) {
  margin: 0 0 8px;
  color: #55595f;
  font-size: 13.5px;
  line-height: 1.55;
}
.highlight-body a { font-size: 13px; font-weight: 600; }

@media (max-width: 720px) {
  .nav-shell { min-height: 54px; }
  .top-nav { gap: 14px; font-size: 13px; }
  .top-nav a:nth-child(2) { display: none; }

  .hero {
    grid-template-columns: 1fr;
    gap: 22px;
    padding-top: 42px;
  }
  .portrait-wrap {
    grid-row: 1;
    justify-self: start;
  }
  .portrait { width: 118px; height: 118px; }
  .hero h1 { font-size: 2.65rem; }
  .hero-role { font-size: 16px; }

  .section { padding: 27px 0; }
  .section h2 { font-size: 22px; }
  .research-line span { display: block; margin-bottom: 2px; }

  .news-row,
  .publication,
  .honor-row {
    grid-template-columns: 1fr;
    gap: 2px;
  }
  .publication { padding: 19px 0; }
  .publication:first-child { padding-top: 15px; }
  .pub-year { padding-top: 0; }
  .pub-group-head { align-items: flex-start; }
  .pub-count { padding-top: 3px; }
  .two-column-meta { grid-template-columns: 1fr; gap: 18px; }
  .footer-inner { align-items: flex-start; flex-direction: column; justify-content: center; gap: 2px; padding: 22px 0; }
  .highlight-grid { grid-template-columns: 1fr; }
  .highlight-visual { min-height: 132px; }
}

@media (max-width: 460px) {
  .page, .nav-shell { width: min(calc(100% - 28px), var(--max-width)); }
  .top-nav { gap: 11px; }
  .top-nav a:nth-child(4) { display: none; }
  .section-title-row { align-items: flex-start; }
  .pub-count { display: none; }
}