:root {
  color-scheme: light;
  --blue: #005375;
  --red: #a72126;
  --ink: #172c39;
  --muted: #566570;
  --line: #dbe2e6;
  --sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Arial, sans-serif;
  --serif: Georgia, "Times New Roman", serif;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  background: #fff;
  color: var(--ink);
  font-family: var(--sans);
  font-size: 16px;
  line-height: 1.8;
  -webkit-text-size-adjust: 100%;
}
img { display: block; max-width: 100%; }
a { color: var(--blue); text-decoration-thickness: 1px; text-underline-offset: 5px; }
a:hover { color: var(--red); }
a:focus-visible {
  outline: 2px solid var(--red);
  outline-offset: 5px;
  border-radius: 1px;
}
p { margin: 0 0 16px; }
h1, h2, h3 { margin: 0; line-height: 1.35; }
figure { margin: 0; }
::selection { color: #fff; background: var(--blue); }
.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

.container { width: min(1040px, calc(100% - 80px)); margin-inline: auto; }
.skip-link {
  position: fixed;
  z-index: 10;
  top: 12px;
  left: 12px;
  padding: 10px 16px;
  background: #fff;
  color: var(--blue);
  border: 1px solid var(--blue);
  font-size: 16px;
  transform: translateY(calc(-100% - 20px));
}
.skip-link:focus { transform: translateY(0); }

.site-header { border-bottom: 1px solid var(--line); }
.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 28px;
  padding-block: 22px;
}
.brand {
  flex: 0 0 auto;
  color: var(--blue);
  font-family: var(--serif);
  font-size: 22px;
  line-height: 1.4;
  text-decoration: none;
}
.brand-dot { color: var(--red); }
.primary-nav { display: flex; flex-wrap: wrap; align-items: center; gap: 4px 27px; }
.primary-nav a {
  display: inline-flex;
  align-items: center;
  min-height: 44px;
  padding-block: 8px;
  color: var(--ink);
  font-size: 15px;
  line-height: 1.5;
  text-decoration: none;
  border-bottom: 2px solid transparent;
}
.primary-nav a:hover,
.primary-nav a[aria-current] { color: var(--blue); border-bottom-color: var(--red); }

.intro {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 260px;
  gap: 78px;
  align-items: start;
  padding-block: 68px 66px;
  scroll-margin-top: 28px;
}
.intro-copy, .education-main, .publication-content { min-width: 0; }
.eyebrow { margin-bottom: 14px; color: var(--red); font-size: 14px; letter-spacing: 1px; }
.name-line { display: flex; flex-wrap: wrap; align-items: baseline; gap: 10px 19px; }
.name-line h1 {
  color: var(--blue);
  font-family: var(--serif);
  font-size: clamp(40px, 4.6vw, 54px);
  font-weight: 400;
  line-height: 1.2;
  letter-spacing: -1.1px;
}
.chinese-name { color: var(--muted); font-size: 20px; font-weight: 400; letter-spacing: 2px; }
.qualifications { margin: 14px 0 0; color: var(--muted); font-size: 16px; }
.position { margin: 21px 0 22px; color: var(--ink); font-size: 18px; line-height: 1.7; }
.position span, .position small { font-size: 16px; color: var(--muted); }
.intro-text { font-size: 16px; color: var(--muted); }
.intro-text > :last-child { margin-bottom: 0; }
.research-interests { margin-top: 21px; font-size: 16px; color: var(--muted); }
.research-interests strong { color: var(--ink); font-weight: 600; }
ul.research-interests, .research-interests ul { padding-left: 20px; }
.research-interests li { padding-left: 2px; }
.research-interests li::marker { color: var(--red); }
.research-interests p:last-child { margin-bottom: 0; }
.intro-links { display: flex; flex-wrap: wrap; gap: 10px 24px; margin-top: 27px; }
.intro-links a { font-size: 16px; }
.portrait { width: 260px; max-width: 100%; }
.portrait figure { margin: 0; }
.portrait img { width: 100%; height: auto; aspect-ratio: 1; object-fit: cover; }
.portrait figcaption { margin-top: 13px; color: var(--muted); font-size: 14px; line-height: 1.65; }

.academic-section { border-top: 1px solid var(--line); padding-block: 43px 48px; scroll-margin-top: 28px; }
.section-heading { display: flex; align-items: baseline; gap: 15px; margin-bottom: 24px; }
.section-heading h2 { color: var(--ink); font-size: 27px; font-weight: 600; letter-spacing: -.3px; }
.section-number { flex-shrink: 0; color: var(--red); font-size: 14px; line-height: 1.5; }

.education-list { margin: 0; padding: 0; list-style: none; }
.education-entry {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 180px;
  gap: 28px;
  padding-block: 24px;
  border-bottom: 1px solid var(--line);
}
.education-entry:first-child { padding-top: 0; }
.education-main h3 { margin-bottom: 8px; color: var(--blue); font-size: 20px; font-weight: 600; line-height: 1.5; }
.institution { margin-bottom: 7px; color: var(--ink); font-size: 16px; line-height: 1.7; }
.education-detail { margin-bottom: 0; color: var(--muted); font-size: 16px; line-height: 1.75; }
.education-detail p:last-child { margin-bottom: 0; }
.education-dates { padding-top: 4px; color: var(--muted); font-size: 14px; line-height: 1.8; text-align: right; }
.education-dates p { margin: 0 0 2px; }
.education-dates time, .education-dates span { font-size: inherit; }
.joint-note { margin: 23px 0 0; padding-left: 15px; border-left: 2px solid var(--red); color: var(--muted); font-size: 14px; line-height: 1.8; }
.empty-note { max-width: 720px; margin-bottom: 0; color: var(--muted); font-size: 16px; }

.publication-list { margin: 0; padding: 0; list-style: none; }
.publication-entry {
  display: grid;
  grid-template-columns: 58px minmax(0, 1fr);
  gap: 26px;
  padding-block: 24px;
  border-bottom: 1px solid var(--line);
}
.publication-entry:first-child { padding-top: 0; }
.publication-year { padding-top: 4px; color: var(--red); font-size: 14px; line-height: 1.8; }
.publication-content h3 { margin-bottom: 12px; font-size: 20px; font-weight: 600; line-height: 1.5; overflow-wrap: anywhere; }
.publication-content h3 a { text-decoration: none; }
.publication-content h3 a:hover { text-decoration: underline; }
.publication-authors { margin-bottom: 7px; color: var(--ink); font-size: 16px; }
.publication-authors strong { font-weight: 600; }
.publication-journal { margin-bottom: 9px; color: var(--muted); font-size: 16px; }
.publication-meta { margin-bottom: 0; color: var(--muted); font-size: 14px; line-height: 1.8; overflow-wrap: anywhere; }
.publication-actions { display: flex; flex-wrap: wrap; gap: 8px 25px; margin-top: 18px; }
.publication-actions a { max-width: 100%; font-size: 14px; overflow-wrap: anywhere; }
.text-link { color: var(--blue); text-decoration: underline; text-decoration-color: var(--red); }
.text-link:hover { color: var(--red); }

.contact-intro { max-width: 700px; margin-bottom: 24px; font-size: 16px; color: var(--muted); }
.contact-links { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 20px 42px; }
.contact-links a { position: relative; display: flex; flex-direction: column; align-items: flex-start; gap: 5px; padding: 0 28px 15px 0; border-bottom: 1px solid var(--line); text-decoration: none; overflow-wrap: anywhere; }
.contact-links strong { color: var(--blue); font-size: 16px; font-weight: 600; }
.contact-links span { color: var(--muted); font-size: 14px; line-height: 1.7; }
.contact-links .contact-arrow { position: absolute; top: 3px; right: 0; color: var(--blue); font-size: 18px; }
.contact-links a:hover strong { color: var(--red); text-decoration: underline; text-decoration-color: var(--red); }

.site-footer { margin-top: 18px; border-top: 1px solid var(--line); }
.footer-inner { display: flex; justify-content: space-between; align-items: flex-start; gap: 25px; padding-block: 25px 30px; }
.footer-notes { display: flex; flex-wrap: wrap; gap: 4px 24px; color: var(--muted); font-size: 14px; line-height: 1.8; }
.footer-notes p { margin: 0; }
.footer-notes a { overflow-wrap: anywhere; }
.top-link { flex-shrink: 0; font-size: 14px; }

@media (max-width: 900px) {
  .container { width: calc(100% - 56px); }
  .intro { grid-template-columns: minmax(0, 1fr) 230px; gap: 42px; }
  .portrait { width: 230px; }
  .primary-nav { column-gap: 21px; }
  .education-entry { grid-template-columns: minmax(0, 1fr) 160px; }
}

@media (max-width: 700px) {
  .header-inner { align-items: flex-start; flex-direction: column; gap: 10px; padding-block: 19px 13px; }
  .primary-nav { width: 100%; gap: 0 24px; }
  .primary-nav a { font-size: 14px; }
  .intro { grid-template-columns: minmax(0, 1fr); gap: 32px; padding-block: 41px 43px; }
  .name-line h1 { font-size: 43px; }
  .chinese-name { font-size: 18px; }
  .portrait { width: 240px; }
  .academic-section { padding-block: 33px 37px; }
  .section-heading { margin-bottom: 23px; }
  .section-heading h2 { font-size: 25px; }
  .education-entry { grid-template-columns: minmax(0, 1fr); gap: 9px; padding-block: 22px; }
  .education-dates { padding-top: 0; text-align: left; }
  .publication-entry { grid-template-columns: minmax(0, 1fr); gap: 6px; }
  .publication-year { padding-top: 0; }
  .contact-links { grid-template-columns: minmax(0, 1fr); gap: 21px; }
  .footer-inner { flex-wrap: wrap; gap: 13px; }
}

@media (max-width: 400px) {
  .container { width: calc(100% - 40px); }
  .primary-nav { column-gap: 20px; }
  .brand { font-size: 21px; }
  .name-line { gap: 9px 15px; }
  .name-line h1 { font-size: 38px; letter-spacing: -.8px; }
  .position { font-size: 17px; }
  .portrait { width: min(240px, 100%); }
  .education-main h3, .publication-content h3 { font-size: 19px; }
  .publication-actions { gap: 10px 20px; }
  .footer-notes { display: block; }
  .footer-notes > * + * { margin-top: 5px; }
}

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