:root {
  color-scheme: light;
  --bg: #faf9f6;
  --surface: #ffffff;
  --ink: #252631;
  --body: #454650;
  --muted: #757580;
  --accent: #477e99;
  --line: #e7e5e1;
  --soft: #f3f6f7;
  --gold: #87632d;
  --gold-bg: #fcf8ee;
  --serif: 'Source Serif 4', Georgia, 'Times New Roman', serif;
  --sans: 'DM Sans', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --mono: 'DM Mono', 'SFMono-Regular', Consolas, monospace;
}
:root[data-theme='dark'] {
  color-scheme: dark;
  --bg: #191b20;
  --surface: #21242a;
  --ink: #eeece6;
  --body: #c5c5cd;
  --muted: #a1a2ae;
  --accent: #93bdd0;
  --line: #33363f;
  --soft: #28323a;
  --gold: #ddbf88;
  --gold-bg: #312c24;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 88px; }
body { margin: 0; background: var(--bg); color: var(--body); font: 16px/1.75 var(--sans); -webkit-font-smoothing: antialiased; }
a { color: var(--accent); text-decoration: none; text-underline-offset: 4px; }
a:hover { text-decoration: underline; }
a, button { -webkit-tap-highlight-color: transparent; }
:focus-visible { outline: 2px solid var(--accent); outline-offset: 5px; }
button { font: inherit; cursor: pointer; }
[hidden] { display: none !important; }
strong { color: var(--ink); font-weight: 600; }
p, figure { margin: 0; }
img { display: block; max-width: 100%; }
section, article { scroll-margin-top: 12px; }
.skip-link { position: fixed; top: -80px; left: 16px; z-index: 30; padding: 8px 16px; background: var(--surface); }
.skip-link:focus { top: 8px; }
.page, .nav-inner { width: min(880px, calc(100% - 48px)); margin-inline: auto; }
.site-header { position: sticky; top: 0; z-index: 10; background: var(--bg); border-bottom: 1px solid var(--line); }
.nav-inner { min-height: 65px; display: flex; justify-content: space-between; align-items: center; gap: 20px; }
.wordmark { font: 600 19px var(--serif); color: var(--ink); white-space: nowrap; }
.nav-links { display: flex; align-items: center; gap: 27px; }
.nav-links > a { color: var(--muted); font-size: 14px; font-weight: 500; }
.nav-links > a:hover { color: var(--accent); }
.theme-toggle { display: grid; place-items: center; width: 36px; height: 36px; border-radius: 50%; border: 1px solid var(--line); background: transparent; color: var(--muted); }
.theme-toggle:hover { border-color: var(--accent); color: var(--accent); }
.theme-toggle svg { width: 17px; height: 17px; fill: none; stroke: currentColor; stroke-width: 1.5; stroke-linecap: round; stroke-linejoin: round; }
.sun-icon, [data-theme='dark'] .moon-icon { display: none; }
[data-theme='dark'] .sun-icon { display: block; }
.about { display: grid; grid-template-columns: minmax(0, 1fr) 222px; column-gap: 55px; padding: 66px 0 48px; }
.identity { grid-column: 1 / -1; margin-bottom: 25px; }
h1, h2 { color: var(--ink); font-family: var(--serif); }
h1 { margin: 0 0 3px; font-size: clamp(36px, 5vw, 49px); font-weight: 600; line-height: 1.25; letter-spacing: -1.6px; }
h1 span { display: inline-block; margin-left: 9px; color: var(--muted); font: 400 24px/1.5 'Songti SC', 'Noto Serif CJK SC', serif; letter-spacing: 2px; }
.intro p + p { margin-top: 20px; }
.intro a { font-weight: 500; text-decoration: underline; text-decoration-color: color-mix(in srgb, var(--accent) 30%, transparent); }
.intro a:hover { text-decoration-color: var(--accent); }
.portrait { align-self: start; margin-top: 7px; padding: 4px; border: 1px solid var(--line); border-radius: 15px; background: var(--surface); box-shadow: 0 7px 24px #21212608; }
.portrait img { width: 100%; height: auto; border-radius: 11px; }
.social-links { grid-column: 1 / -1; display: flex; flex-wrap: wrap; gap: 10px; margin-top: 27px; }
.social-links a { display: inline-flex; align-items: center; gap: 12px; padding: 6px 13px; border: 1px solid var(--line); border-radius: 30px; color: var(--muted); font: 12px/1.7 var(--mono); }
.social-links a:hover { color: var(--accent); border-color: var(--accent); text-decoration: none; }
.social-links span { font: 14px var(--sans); }
.section { padding: 42px 0 44px; border-top: 1px solid var(--line); }
h2 { margin: 0 0 25px; font-size: 28px; line-height: 1.3; font-weight: 600; letter-spacing: -.5px; }
h2 > span { margin-right: 11px; font-weight: 400; color: var(--muted); opacity: .5; }
.news-list { list-style: none; margin: 0; padding: 0; }
.news-list li { display: grid; grid-template-columns: 76px minmax(0, 1fr); gap: 16px; padding: 7px 0; font-size: 14px; line-height: 1.75; }
.news-list time { padding-top: 3px; color: var(--muted); font: 12px/1.8 var(--mono); }
.news-list.is-collapsible:not(.expanded) li:nth-child(n+5) { display: none; }
.news-toggle { margin: 15px 0 0 92px; padding: 0; border: 0; color: var(--accent); background: none; font-size: 13px; }
.news-toggle span { margin-left: 8px; }
.section-heading { display: flex; justify-content: space-between; align-items: baseline; gap: 16px; }
.section-note { color: var(--muted); font: 11px/1.6 var(--mono); }
.research-index { display: flex; flex-wrap: wrap; column-gap: 21px; row-gap: 8px; padding-bottom: 7px; }
.research-index a { font-size: 12px; color: var(--muted); }
.research-index a:hover { color: var(--accent); }
.research-group { padding-top: 27px; }
.research-group + .research-group { margin-top: 15px; }
h3 { display: flex; align-items: center; gap: 13px; margin: 0 0 17px; color: var(--body); font-size: 15px; font-weight: 500; }
.count { color: var(--muted); font: 10px var(--mono); }
.publication { display: grid; grid-template-columns: 155px minmax(0, 1fr); align-items: center; gap: 23px; padding: 23px; border: 1px solid var(--line); border-radius: 13px; background: var(--surface); }
.publication + .publication { margin-top: 13px; }
.publication-image { display: grid; place-items: center; min-height: 100px; border-radius: 5px; overflow: hidden; background: #fff; }
.publication-image img { width: 100%; height: 112px; object-fit: contain; }
.publication h4 { margin: 0 0 8px; font-size: 15px; font-weight: 600; line-height: 1.5; }
.publication h4 a { color: var(--ink); }
.publication h4 a:hover { color: var(--accent); }
.authors { color: var(--muted); font-size: 12px; line-height: 1.7; }
.authors strong { color: var(--body); }
.publication-meta { display: flex; flex-wrap: wrap; align-items: center; gap: 9px 15px; margin-top: 13px; }
.venue { display: inline-block; padding: 2px 9px; border-radius: 5px; background: var(--soft); color: var(--accent); font: 10px/1.8 var(--mono); }
.venue-highlight { color: var(--gold); background: var(--gold-bg); }
.paper-links { display: flex; flex-wrap: wrap; gap: 13px; font-size: 11px; }
.awards-list { list-style: none; margin: 0; padding: 0; }
.awards-list li { display: grid; grid-template-columns: 90px minmax(0, 1fr); align-items: baseline; gap: 20px; padding: 16px 0; font-size: 14px; }
.awards-list li + li { border-top: 1px solid var(--line); }
.award-badge { display: inline-block; text-align: center; background: var(--gold-bg); color: var(--gold); border: 1px solid color-mix(in srgb, var(--gold) 18%, transparent); border-radius: 20px; padding: 3px 10px; font: 11px/1.8 var(--mono); }
.muted { color: var(--muted); }
.service > p { font-size: 14px; }
.service-list { display: flex; flex-wrap: wrap; gap: 12px 26px; margin: 16px 0 0; padding: 0; list-style: none; font: 13px/1.8 var(--mono); }
abbr[title] { text-decoration: none; }
.site-footer { padding: 34px 0 24px; border-top: 1px solid var(--line); color: var(--muted); font-size: 13px; }
.footer-bottom { display: flex; flex-wrap: wrap; justify-content: space-between; gap: 12px; color: var(--muted); font-size: 11px; }
.footer-bottom a { color: var(--muted); }
@media (max-width: 700px) {
  .page, .nav-inner { width: calc(100% - 36px); }
  .nav-links { gap: 15px; }
  .about { column-gap: 26px; grid-template-columns: minmax(0, 1fr) 160px; padding-top: 42px; }
  .intro { grid-column: 1 / -1; }
  .portrait { grid-column: 2; grid-row: 1; width: 110px; justify-self: end; margin: 0; }
  .identity { grid-column: 1; align-self: center; min-height: 118px; margin-bottom: 25px; }
  h1 { font-size: 35px; }
  h1 span { display: block; margin: 6px 0 0; font-size: 20px; }
  .publication { grid-template-columns: 120px minmax(0, 1fr); gap: 18px; padding: 19px; }
}
@media (max-width: 480px) {
  body { font-size: 15px; }
  .nav-inner { min-height: 60px; gap: 10px; }
  .wordmark { font-size: 16px; }
  .nav-links { gap: 11px; }
  .nav-links > a { font-size: 11px; }
  .theme-toggle { width: 29px; height: 29px; }
  .about { grid-template-columns: minmax(0, 1fr) 85px; column-gap: 13px; padding-top: 35px; padding-bottom: 33px; }
  .portrait { width: 85px; margin-top: 4px; border-radius: 11px; padding: 3px; }
  .portrait img { border-radius: 8px; }
  h1 { font-size: 30px; letter-spacing: -1px; }
  h1 span { font-size: 18px; }
  .social-links { gap: 8px; margin-top: 22px; }
  .social-links a { padding: 5px 10px; font-size: 10px; gap: 7px; }
  .section { padding: 32px 0; }
  h2 { font-size: 25px; }
  .news-list li { grid-template-columns: 62px minmax(0, 1fr); gap: 10px; font-size: 13px; }
  .news-list time { font-size: 10px; }
  .news-toggle { margin-left: 72px; }
  .section-note { font-size: 9px; }
  .research-index { gap: 8px 14px; }
  .research-index a { font-size: 11px; }
  h3 { font-size: 13px; }
  .publication { grid-template-columns: minmax(0, 1fr); gap: 16px; padding: 19px; }
  .publication-image { width: 100%; }
  .publication-image img { height: 135px; }
  .publication h4 { font-size: 15px; }
  .awards-list li { grid-template-columns: 74px minmax(0, 1fr); gap: 13px; font-size: 13px; }
  .award-badge { font-size: 10px; }
}
@media (max-width: 360px) {
  .nav-inner { flex-wrap: wrap; justify-content: center; row-gap: 0; padding-block: 6px; }
  .wordmark { width: 100%; text-align: center; }
  .nav-links { gap: 18px; }
}
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } }
@media print {
  .site-header, .theme-toggle, .news-toggle, .research-index, .footer-bottom { display: none; }
  .page { width: 100%; }
  .publication { break-inside: avoid; }
  .news-list.is-collapsible:not(.expanded) li:nth-child(n+5) { display: grid; }
}