:root {
  --text: #222;
  --muted: #646464;
  --soft: #f6f7f9;
  --line: #e7e7e7;
  --accent: #b45f06;
  --accent-soft: #fff2df;
  --link: #1f5fa8;
  --max-width: 980px;
  --radius: 18px;
  --shadow: 0 18px 45px rgba(0, 0, 0, 0.08);
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  color: var(--text);
  line-height: 1.65;
  background: #fff;
}

a { color: var(--link); text-decoration: none; }
a:hover { text-decoration: underline; }

.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(255, 255, 255, 0.92);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--line);
}

.navbar {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 14px 20px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
}

.brand {
  color: var(--text);
  font-weight: 700;
  font-size: 18px;
  letter-spacing: -0.02em;
}

.nav-links { display: flex; align-items: center; gap: 18px; }
.nav-links a {
  color: #333;
  font-size: 14px;
  font-weight: 500;
}

.nav-toggle { display: none; }
.nav-toggle-label { display: none; cursor: pointer; }
.nav-toggle-label span {
  display: block;
  width: 22px;
  height: 2px;
  background: #333;
  margin: 5px 0;
}

.page {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 44px 20px 80px;
}

.hero {
  display: grid;
  grid-template-columns: 220px 1fr;
  gap: 42px;
  align-items: center;
  margin: 20px 0 46px;
}

.portrait-wrap {
  display: block;
  color: inherit;
}

.portrait {
  width: 220px;
  height: 280px;
  object-fit: cover;
  border-radius: 14px;
  border: 1px solid var(--line);
  box-shadow: var(--shadow);
  background: var(--soft);
}

.identity-card h1 {
  font-size: 42px;
  line-height: 1.05;
  margin: 0 0 8px;
  letter-spacing: -0.04em;
}

.name-cn {
  margin: 0 0 4px;
  color: var(--muted);
  font-size: 22px;
  letter-spacing: 0.08em;
}

.role {
  margin: 0;
  font-size: 20px;
  color: #343434;
}

.affiliation {
  margin: 3px 0 22px;
  color: var(--muted);
}

.social-row {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin: 0 0 18px;
}

.social-row a {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 7px 11px;
  color: #222;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: #fff;
  font-size: 14px;
  font-weight: 500;
}

.social-row a:hover {
  border-color: #d1d1d1;
  background: var(--soft);
  text-decoration: none;
}

.icon {
  display: inline-flex;
  justify-content: center;
  align-items: center;
  width: 19px;
  height: 19px;
  font-size: 12px;
  font-weight: 700;
}

.tag-row {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.tag-row span {
  padding: 5px 9px;
  border-radius: 999px;
  background: var(--accent-soft);
  color: #7b3f00;
  font-size: 13px;
}

.section {
  margin-top: 42px;
  padding-top: 8px;
}
.anchor-section { scroll-margin-top: 80px; }
.section h2 {
  font-size: 27px;
  margin: 0 0 18px;
  letter-spacing: -0.03em;
}

.section p { margin: 0 0 14px; }

.news-list {
  list-style: none;
  padding: 0;
  margin: 0;
  border-top: 1px solid var(--line);
}

.news-list li {
  display: grid;
  grid-template-columns: 90px 1fr;
  gap: 16px;
  padding: 12px 0;
  border-bottom: 1px solid var(--line);
}

.news-list time {
  color: var(--accent);
  font-weight: 700;
  font-size: 14px;
}

.publication-card {
  display: grid;
  grid-template-columns: 170px 1fr;
  gap: 22px;
  padding: 22px 0;
  border-top: 1px solid var(--line);
}

.publication-card:last-child { border-bottom: 1px solid var(--line); }
.publication-card.featured { border-top: 2px solid var(--accent); }

.publication-media {
  display: flex;
  align-self: start;
  width: 170px;
  aspect-ratio: 16 / 9;
  align-items: center;
  justify-content: center;
  border-radius: 12px;
  overflow: hidden;
  border: 1px solid var(--line);
  background: var(--soft);
}

.publication-media img,
.publication-media video {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: contain;
}

.publication-copy h3 {
  margin: 5px 0 7px;
  line-height: 1.28;
  font-size: 19px;
}

.publication-copy h3 a { color: var(--text); }

.venue-badge {
  display: inline-block;
  padding: 3px 8px;
  border-radius: 999px;
  background: #eef4ff;
  color: #24436b;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.02em;
  text-transform: uppercase;
}

.venue-badge.award {
  background: var(--accent-soft);
  color: #7b3f00;
}

.authors, .summary, .resources {
  font-size: 14.5px;
  margin: 8px 0 0;
}

.authors { color: #343434; }
.summary { color: var(--muted); }
.resources a { font-weight: 600; }
.resource-disabled { color: var(--muted); font-style: italic; }

.timeline {
  border-top: 1px solid var(--line);
}
.timeline-item {
  display: grid;
  grid-template-columns: 130px 1fr;
  gap: 22px;
  padding: 14px 0;
  border-bottom: 1px solid var(--line);
}
.timeline-item time {
  color: var(--accent);
  font-weight: 700;
  font-size: 14px;
}

.footer {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 20px 36px;
  color: var(--muted);
  font-size: 14px;
}
.bio-logo-row {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 26px;
  margin-top: 22px;
}

.bio-logo-row a {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  height: 54px;
}

.bio-logo-row img {
  max-height: 48px;
  max-width: 150px;
  object-fit: contain;
  filter: grayscale(10%);
  opacity: 0.92;
}

.bio-logo-row img:hover {
  opacity: 1;
  filter: none;
}

.venue-full {
  font-size: 14.5px;
  margin: 6px 0 0;
  color: var(--muted);
  font-style: italic;
}

@media (max-width: 760px) {
  .navbar { align-items: flex-start; }
  .nav-toggle-label { display: block; margin-left: auto; }
  .nav-links {
    display: none;
    position: absolute;
    left: 0;
    right: 0;
    top: 54px;
    padding: 14px 20px 18px;
    background: #fff;
    border-bottom: 1px solid var(--line);
    flex-direction: column;
    align-items: flex-start;
    gap: 10px;
  }
  .nav-toggle:checked ~ .nav-links { display: flex; }

  .hero {
    grid-template-columns: 1fr;
    gap: 24px;
    text-align: left;
  }
  .portrait { width: 170px; height: 215px; }
  .identity-card h1 { font-size: 35px; }
  .publication-card { grid-template-columns: 1fr; }
  .publication-media { max-width: 360px; }
  .news-list li, .timeline-item { grid-template-columns: 1fr; gap: 3px; }
}