:root {
  color-scheme: light;
  --background: #f5f7fa;
  --surface: #ffffff;
  --surface-subtle: #edf1f5;
  --text: #172033;
  --muted: #5c6878;
  --border: #d7dee7;
  --link: #245f9e;
  --link-hover: #174777;
  --container: 980px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  scroll-padding-top: 24px;
}

body {
  margin: 0;
  color: var(--text);
  background: var(--background);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Arial, sans-serif;
  font-size: 16px;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}

img {
  display: block;
  max-width: 100%;
}

a {
  color: var(--link);
  text-decoration-thickness: 1px;
  text-underline-offset: 0.16em;
}

a:hover {
  color: var(--link-hover);
}

a:focus-visible {
  outline: 2px solid var(--link);
  outline-offset: 3px;
}

h1,
h2,
h3,
h4,
p {
  margin-top: 0;
}

h1,
h2,
h3,
h4 {
  line-height: 1.25;
}

.container {
  width: min(calc(100% - 40px), var(--container));
  margin-inline: auto;
}

.skip-link {
  position: fixed;
  top: 10px;
  left: 10px;
  z-index: 10;
  padding: 8px 12px;
  color: #fff;
  background: var(--text);
  transform: translateY(-150%);
}

.skip-link:focus {
  transform: translateY(0);
}

.site-header {
  background: var(--surface);
  border-bottom: 1px solid var(--border);
}

.nav-wrap {
  min-height: 64px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 28px;
}

.brand {
  color: var(--text);
  font-weight: 700;
  text-decoration: none;
  white-space: nowrap;
}

.site-nav {
  display: flex;
  gap: 24px;
}

.site-nav a {
  color: var(--muted);
  font-size: 0.9rem;
  text-decoration: none;
}

.site-nav a:hover {
  color: var(--text);
}

.hero {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 190px;
  align-items: center;
  gap: 56px;
  padding-block: 64px;
}

.hero h1 {
  margin-bottom: 12px;
  font-size: clamp(2.35rem, 5vw, 3.3rem);
  letter-spacing: -0.035em;
}

.chinese-name {
  margin-left: 0.35em;
  color: var(--muted);
  font-family: "Songti SC", "STSong", serif;
  font-size: 0.48em;
  font-weight: 500;
  letter-spacing: 0.03em;
  vertical-align: 0.12em;
}

.hero-role {
  margin-bottom: 18px;
  font-size: 1.15rem;
  font-weight: 600;
}

.hero-intro {
  max-width: 650px;
  margin-bottom: 20px;
  color: var(--muted);
  font-size: 1.02rem;
}

.contact-links {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 20px;
}

.contact-links a {
  font-weight: 600;
}

.portrait-wrap {
  justify-self: end;
  padding: 4px;
  background: var(--surface);
  border: 1px solid var(--border);
}

.portrait {
  width: 180px;
  height: auto;
}

.section {
  padding-block: 64px;
  border-top: 1px solid var(--border);
}

.section-heading {
  margin-bottom: 34px;
}

.section-heading h2 {
  margin-bottom: 6px;
  font-size: 1.8rem;
  letter-spacing: -0.02em;
}

.section-heading p {
  margin-bottom: 0;
  color: var(--muted);
}

.section-heading-actions {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 28px;
}

.section-heading-actions > a {
  flex: 0 0 auto;
  margin-top: 8px;
  font-size: 0.9rem;
}

.about-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.5fr) minmax(250px, 0.7fr);
  gap: 54px;
}

.prose p {
  margin-bottom: 18px;
  font-size: 1.02rem;
}

.focus-card {
  padding-left: 24px;
  border-left: 3px solid var(--border);
}

.card-label {
  margin-bottom: 14px;
  font-size: 1rem;
}

.focus-card ul {
  margin: 0;
  padding-left: 20px;
}

.focus-card li {
  margin-bottom: 10px;
}

.focus-card li span {
  display: none;
}

.experience-columns {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 48px;
}

.experience-group h3 {
  margin-bottom: 16px;
  color: var(--muted);
  font-size: 0.85rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.timeline-card {
  min-height: 118px;
  display: grid;
  grid-template-columns: 60px 1fr;
  align-items: center;
  gap: 18px;
  padding-block: 20px;
  border-top: 1px solid var(--border);
}

.timeline-card:last-child {
  border-bottom: 1px solid var(--border);
}

.logo-frame {
  width: 56px;
  height: 56px;
  display: grid;
  place-items: center;
  background: var(--surface);
}

.logo-frame-wide img {
  width: auto;
  height: auto;
  max-width: 48px;
  max-height: 36px;
}

.logo-frame-square img {
  width: 42px;
  height: 42px;
  object-fit: contain;
}

.timeline-date {
  margin-bottom: 4px;
  color: var(--muted);
  font-size: 0.75rem;
}

.timeline-card h4 {
  margin-bottom: 4px;
  font-size: 1rem;
}

.timeline-card h4 a {
  color: inherit;
}

.timeline-card p:last-child {
  margin: 0;
  color: var(--muted);
  font-size: 0.88rem;
}

.publication-groups {
  display: grid;
  gap: 44px;
}

.publication-topic-heading {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 24px;
  margin-bottom: 10px;
}

.publication-topic-heading h3 {
  margin: 0;
  font-size: 1.25rem;
  letter-spacing: -0.02em;
}

.publication-topic-heading p {
  margin: 5px 0 0;
  color: var(--muted);
  font-size: 0.82rem;
}

.publication-topic-heading > span {
  flex: 0 0 auto;
  padding-top: 4px;
  color: var(--muted);
  font-size: 0.78rem;
}

.publication-list {
  border-bottom: 1px solid var(--border);
}

.publication-card {
  display: grid;
  grid-template-columns: 190px minmax(0, 1fr);
  gap: 26px;
  padding-block: 26px;
  border-top: 1px solid var(--border);
}

.publication-card-text-only {
  display: block;
  padding-left: 216px;
}

.publication-visual {
  height: 126px;
  display: grid;
  place-items: center;
  padding: 6px;
  overflow: hidden;
  background: var(--surface);
  border: 1px solid var(--border);
}

.publication-visual img {
  width: 100%;
  height: 112px;
  object-fit: contain;
}

.publication-content {
  align-self: center;
  min-width: 0;
}

.publication-meta {
  display: flex;
  gap: 10px;
  margin-bottom: 7px;
  color: var(--muted);
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.publication-meta time {
  color: var(--muted);
  font-variant-numeric: tabular-nums;
}

.venue-tag {
  color: var(--text);
}

.publication-content h4 {
  margin-bottom: 9px;
  font-size: 1.08rem;
}

.authors {
  margin-bottom: 6px;
  color: var(--muted);
  font-size: 0.82rem;
  line-height: 1.55;
}

.authors strong {
  color: var(--text);
}

.author-note {
  white-space: nowrap;
}

.venue {
  margin-bottom: 9px;
  color: var(--muted);
  font-size: 0.78rem;
  font-style: italic;
}

.publication-links {
  display: flex;
  flex-wrap: wrap;
  gap: 6px 16px;
}

.publication-links a {
  font-size: 0.8rem;
}

.recognition-grid {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 54px;
}

.honors-list {
  margin: 0;
  padding: 0;
  border-bottom: 1px solid var(--border);
  list-style: none;
}

.honors-list li {
  display: grid;
  grid-template-columns: 48px 1fr;
  gap: 16px;
  padding-block: 14px;
  border-top: 1px solid var(--border);
}

.honors-list time {
  color: var(--muted);
  font-size: 0.78rem;
}

.honors-list strong,
.honors-list span {
  display: block;
}

.honors-list strong {
  margin-bottom: 2px;
  font-size: 0.9rem;
}

.honors-list span {
  color: var(--muted);
  font-size: 0.78rem;
}

.service-item {
  padding-block: 14px;
  border-top: 1px solid var(--border);
}

.service-item h3 {
  margin-bottom: 7px;
  font-size: 1rem;
}

.service-item p {
  margin-bottom: 0;
  color: var(--muted);
  font-size: 0.88rem;
}

.site-footer {
  padding-block: 34px;
  color: var(--muted);
  background: var(--surface-subtle);
  border-top: 1px solid var(--border);
}

.footer-content {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 32px;
}

.footer-name {
  margin-bottom: 3px;
  color: var(--text);
  font-weight: 700;
}

.footer-content p {
  margin-bottom: 3px;
  font-size: 0.8rem;
}

.footer-meta {
  text-align: right;
}

@media (max-width: 720px) {
  .nav-wrap {
    align-items: flex-start;
    flex-direction: column;
    gap: 10px;
    padding-block: 16px;
  }

  .site-nav {
    width: 100%;
    gap: 18px;
    overflow-x: auto;
    padding-bottom: 2px;
  }

  .site-nav a {
    flex: 0 0 auto;
  }

  .hero {
    grid-template-columns: 1fr;
    gap: 28px;
    padding-block: 48px;
  }

  .portrait-wrap {
    order: -1;
    justify-self: start;
  }

  .portrait {
    width: 140px;
  }

  .section {
    padding-block: 48px;
  }

  .section-heading-actions {
    flex-direction: column;
    gap: 8px;
  }

  .section-heading-actions > a {
    margin-top: 0;
  }

  .about-grid,
  .experience-columns,
  .recognition-grid {
    grid-template-columns: 1fr;
  }

  .about-grid,
  .recognition-grid {
    gap: 32px;
  }

  .experience-columns {
    gap: 36px;
  }

  .publication-card {
    grid-template-columns: 1fr;
    gap: 16px;
  }

  .publication-card-text-only {
    padding-left: 0;
  }

  .publication-topic-heading {
    align-items: flex-start;
    flex-direction: column;
    gap: 4px;
  }

  .publication-topic-heading > span {
    padding-top: 0;
  }

  .publication-groups {
    gap: 36px;
  }

  .publication-visual {
    width: min(100%, 260px);
    height: 150px;
  }

  .publication-visual img {
    height: 136px;
  }

  .footer-content {
    align-items: flex-start;
    flex-direction: column;
    gap: 18px;
  }

  .footer-meta {
    text-align: left;
  }
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }
}

@media print {
  .site-header,
  .contact-links {
    display: none;
  }

  .section,
  .publication-card {
    break-inside: avoid;
  }
}