:root {
  --text: #242424;
  --muted: #555;
  --link: #355b87;
  --line: #ddd;
  --font: Georgia, "Times New Roman", "Songti SC", SimSun, serif;
}

* { box-sizing: border-box; }
html { scroll-padding-top: 76px; }
body { margin: 0; background: #fff; color: var(--text); font: 16px/1.5 var(--font); }
a { color: var(--link); text-decoration: none; text-underline-offset: 3px; }
a:hover { text-decoration: underline; }
.about-section p a, .news-list a { text-decoration: underline; }
a:focus-visible, summary:focus-visible { outline: 2px solid var(--link); outline-offset: 4px; }
p { margin: 0 0 12px; }
strong { font-weight: 700; }
h1, h2, h3 { margin-top: 0; color: #171717; }
h1 { font-size: 24px; line-height: 1.3; font-weight: 700; }
h2 { font-size: 20px; line-height: 1.4; font-weight: 700; }
h3 { font-size: 16px; line-height: 1.4; font-weight: 700; }
summary { cursor: pointer; }
::selection { background: #dceafa; }
.visually-hidden { position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip: rect(0, 0, 0, 0); white-space: nowrap; border: 0; }
.skip-link { position: fixed; top: -60px; left: 15px; z-index: 20; background: #fff; padding: 10px 15px; }
.skip-link:focus { top: 8px; }

.site-header { position: sticky; top: 0; z-index: 10; background: #fff; border-bottom: 1px solid var(--line); }
.header-inner { max-width: 1240px; min-height: 54px; margin: auto; padding: 0 24px; display: flex; align-items: center; gap: 44px; }
.site-brand { flex: 0 0 190px; color: #242424; font-size: 15px; font-weight: 700; }
.site-nav { display: flex; flex-wrap: wrap; gap: 27px; font-size: 14px; }
.site-nav a { color: #333; padding: 8px 0; }
.site-nav a:hover { color: var(--link); }
.site-shell { max-width: 1240px; margin: auto; padding: 25px 24px 0; display: grid; grid-template-columns: 190px minmax(0, 1fr); gap: 44px; align-items: start; }
.profile { position: sticky; top: 80px; }
.profile-photo { display: block; width: 178px; height: 178px; object-fit: cover; margin-bottom: 16px; }
.profile h1 { font-size: 23px; margin-bottom: 4px; white-space: nowrap; }
.profile-name-cn { font-size: 16px; color: #444; margin-bottom: 14px; }
.profile-role { font-size: 14px; margin-bottom: 6px; }
.profile-affiliation { font-size: 14px; line-height: 1.5; margin-bottom: 10px; }
.profile-links { display: grid; gap: 7px; font-size: 14px; }
main { min-width: 0; }
main:focus { outline: none; }
.about-section p { line-height: 1.55; margin-bottom: 12px; }
.about-section p:last-child { margin-bottom: 0; }
.content-section { margin-top: 27px; }
.section-heading { display: flex; align-items: baseline; gap: 12px; border-bottom: 1px solid var(--line); padding-bottom: 5px; margin-bottom: 14px; }
.section-heading h2 { margin: 0; }
.section-aside { font-size: 14px; white-space: nowrap; }
.news-list { list-style: none; padding: 0; margin: 0; }
.news-list li { display: grid; grid-template-columns: 65px minmax(0, 1fr); gap: 12px; font-size: 14px; line-height: 1.5; margin-bottom: 7px; }
.news-date { color: var(--muted); font-size: 13px; font-variant-numeric: tabular-nums; }

.report, .publication-lead { display: grid; grid-template-columns: 220px minmax(0, 1fr); gap: 24px; align-items: center; }
.report { padding: 14px 0; }
.report:first-child { padding-top: 4px; }
.report-content, .publication-content { min-width: 0; }
.report h3, .publication h3 { font-size: 16px; line-height: 1.4; margin: 0 0 5px; }
.report h3 a, .publication h3 a { color: #171717; font-weight: 700; }
.report h3 a:hover, .publication h3 a:hover { color: var(--link); }
.authors { color: #3b3b3b; font-size: 14px; line-height: 1.45; margin: 0 0 4px; }
.authors strong { color: #171717; font-weight: 700; }
.work-meta, .publication-meta { color: #333; font-size: 14px; line-height: 1.4; margin: 0 0 4px; }
.publication-meta { font-style: italic; }
.work-links { display: flex; flex-wrap: wrap; gap: 4px 8px; font-size: 14px; line-height: 1.4; margin: 0; }
.report-summary, .paper-summary { font-size: 14px; line-height: 1.45; color: #444; margin: 5px 0 0; }
.report-authors { margin: 0 0 4px; font-size: 14px; }
.report-authors summary { color: #3b3b3b; }
.report-authors p { margin-top: 6px; }
.research-figure { display: block; width: 100%; min-width: 0; }
.research-figure img { display: block; width: 100%; height: auto; max-height: 150px; object-fit: contain; }
.figure-caption { display: none; }
.section-intro { color: var(--muted); font-size: 14px; font-style: italic; margin: -4px 0 5px; }
.publication { padding: 16px 0; }
.publication:last-child { padding-bottom: 0; }
.other-publications { margin-top: 25px; }
.subsection-title { font-size: 18px; margin-bottom: 0; padding-bottom: 5px; border-bottom: 1px solid var(--line); }
.other-publications .publication { padding: 13px 0; }

.background-grid { margin-top: 6px; }
.education-list { list-style: none; margin: 0; padding: 0; }
.education-list li { margin-bottom: 14px; }
.timeline-date { font-size: 13px; color: var(--muted); }
.education-list h3 { font-size: 15px; margin: 2px 0; }
.education-list p { font-size: 14px; line-height: 1.5; margin: 0; }
.honors-list { padding: 0; margin: 0; list-style: none; }
.honors-list li { display: grid; grid-template-columns: 36px minmax(0, 1fr); gap: 13px; font-size: 14px; line-height: 1.5; margin-bottom: 10px; }
.honors-list li > span { color: var(--muted); font-size: 13px; }
.service-section p { font-size: 14px; line-height: 1.5; }
.site-footer { margin-top: 38px; border-top: 1px solid var(--line); }
.footer-inner { max-width: 1240px; margin: auto; padding: 18px 24px; display: flex; justify-content: space-between; flex-wrap: wrap; gap: 8px; color: var(--muted); font-size: 12px; }
.footer-inner p { margin: 0; }
.footer-inner span { padding: 0 10px; }

@media (max-width: 1100px) {
  .header-inner { gap: 32px; }
  .site-brand { flex-basis: 170px; }
  .site-shell { grid-template-columns: 170px minmax(0, 1fr); gap: 32px; }
  .profile-photo { width: 160px; height: 160px; }
  .profile h1 { font-size: 22px; }
  .report, .publication-lead { grid-template-columns: 195px minmax(0, 1fr); gap: 22px; }
}
@media (max-width: 900px) {
  .header-inner { gap: 28px; }
  .site-brand { flex-basis: 150px; }
  .site-nav { gap: 19px; }
  .site-shell { grid-template-columns: 150px minmax(0, 1fr); gap: 28px; }
  .profile-photo { width: 145px; height: 145px; }
  .profile h1 { font-size: 21px; }
  .profile-affiliation, .profile-role { font-size: 13px; }
  .profile-links { font-size: 12px; }
  .report, .publication-lead { grid-template-columns: 175px minmax(0, 1fr); gap: 20px; }
}
@media (max-width: 760px) {
  html { scroll-padding-top: 68px; }
  .header-inner { min-height: 48px; padding: 0 22px; }
  .site-brand { display: none; }
  .site-nav { width: 100%; justify-content: space-between; gap: 12px; font-size: 13px; }
  .site-shell { display: block; max-width: 680px; padding: 24px 22px 0; }
  .profile { position: static; display: grid; grid-template-columns: 130px minmax(0, 1fr); gap: 24px; margin-bottom: 25px; }
  .profile-photo { width: 130px; height: 130px; margin: 0; }
  .profile h1 { font-size: 24px; }
  .profile-name-cn { font-size: 15px; margin-bottom: 10px; }
  .profile-role { margin-bottom: 4px; }
  .profile-affiliation { font-size: 13px; margin-bottom: 6px; }
  .profile-links { display: flex; flex-wrap: wrap; gap: 4px 14px; font-size: 13px; }
  .about-section p { font-size: 15px; }
  .content-section { margin-top: 25px; }
  .report, .publication-lead { grid-template-columns: 175px minmax(0, 1fr); gap: 20px; }
}
@media (max-width: 580px) {
  .header-inner { padding: 8px 18px; }
  .site-nav { gap: 8px; font-size: 12px; }
  .site-nav a { padding: 3px 0; }
  .report, .publication-lead { grid-template-columns: 1fr; gap: 13px; padding: 18px 0; }
  .research-figure { max-width: 300px; margin: auto; }
  .research-figure img { max-height: 190px; }
  .report h3, .publication h3 { font-size: 16px; }
  .authors, .report-summary, .paper-summary { font-size: 14px; }
  .work-links { font-size: 14px; }
  .section-heading { flex-wrap: wrap; gap: 4px 10px; }
}
@media (max-width: 380px) {
  .site-shell { padding-left: 17px; padding-right: 17px; }
  .profile { grid-template-columns: 95px minmax(0, 1fr); gap: 17px; }
  .profile-photo { width: 95px; height: 110px; }
  .profile h1 { font-size: 22px; }
  .profile-links { gap: 3px 10px; font-size: 11px; }
  .section-heading h2 { font-size: 20px; }
  .news-list li { grid-template-columns: 57px minmax(0, 1fr); gap: 9px; }
}
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } }
@media print {
  .site-header, .skip-link, .profile-photo, .profile-links { display: none; }
  .site-shell { display: block; padding: 0; }
  .profile { position: static; margin-bottom: 22px; }
  .profile-name-cn, .profile-role, .profile-affiliation { display: inline; margin-right: 12px; }
  .profile-affiliation br { display: none; }
  .report, .publication { break-inside: avoid; }
  .background-grid { display: block; }
  .footer-inner { padding: 15px 0; }
}