:root {
  color-scheme: light;
  --topbar-height: 64px;
  --sidebar-width: 238px;
  --layout-width: 1206px;
  --layout-offset: max(0px, calc((100vw - var(--layout-width)) / 2));
  --page: #ffffff;
  --sidebar: #fafbfc;
  --text: #252a31;
  --muted: #68717d;
  --line: #e3e7eb;
  --link: #2457a6;
  --link-soft: #eaf1fb;
  --note: #f5f8fb;
  --shadow: 0 8px 26px rgba(24, 39, 58, 0.08);
  --sans: Inter, ui-sans-serif, -apple-system, BlinkMacSystemFont, "Segoe UI", "Noto Sans SC", Arial, sans-serif;
  --serif: Georgia, "Noto Serif SC", "Times New Roman", serif;
}

[data-theme="dark"] {
  color-scheme: dark;
  --page: #15181c;
  --sidebar: #111419;
  --text: #e8ebef;
  --muted: #a8b0ba;
  --line: #30363e;
  --link: #8ab4ef;
  --link-soft: #1d2d42;
  --note: #1a2027;
  --shadow: 0 8px 26px rgba(0, 0, 0, 0.28);
}

* { box-sizing: border-box; }

html {
  scroll-behavior: smooth;
  scroll-padding-top: calc(var(--topbar-height) + 22px);
}

body {
  margin: 0;
  background: var(--page);
  color: var(--text);
  font-family: var(--sans);
  font-size: 16px;
  line-height: 1.75;
  text-rendering: optimizeLegibility;
}

a { color: var(--link); text-decoration: none; }
a:hover { text-decoration: underline; text-underline-offset: 3px; }
button { font: inherit; }

.skip-link {
  position: fixed;
  left: 16px;
  top: -80px;
  z-index: 100;
  padding: 8px 12px;
  background: var(--text);
  color: var(--page);
}
.skip-link:focus { top: 10px; }

.lang-zh { display: none !important; }
.lang-en { display: inline !important; }
p.lang-en,
h3.lang-en,
strong.lang-en,
div.lang-en { display: block !important; }

.topbar {
  position: fixed;
  inset: 0 0 auto 0;
  z-index: 40;
  height: var(--topbar-height);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 max(28px, calc(var(--layout-offset) + 28px));
  background: color-mix(in srgb, var(--page) 94%, transparent);
  border-bottom: 1px solid var(--line);
  backdrop-filter: blur(12px);
}

.topbar__brand {
  color: var(--text);
  font-family: var(--serif);
  font-size: 19px;
  font-weight: 700;
  letter-spacing: 0.01em;
}
.topbar__brand:hover { text-decoration: none; }

.topbar__actions { display: flex; align-items: center; gap: 7px; }
.topbar__link { padding: 5px 8px; color: var(--muted); font-size: 13px; }

.language-switch {
  display: flex;
  margin-left: 5px;
  padding: 2px;
  border: 1px solid var(--line);
  border-radius: 6px;
}

.language-switch button,
.icon-button,
.menu-button {
  border: 0;
  background: transparent;
  color: var(--muted);
  cursor: pointer;
}

.language-switch button {
  min-width: 33px;
  padding: 4px 7px;
  border-radius: 4px;
  font-size: 12px;
}
.language-switch button[aria-pressed="true"] { background: var(--link-soft); color: var(--link); }

.icon-button,
.menu-button {
  display: grid;
  width: 34px;
  height: 34px;
  place-items: center;
  border-radius: 6px;
  font-size: 18px;
}
.icon-button:hover,
.menu-button:hover { background: var(--note); color: var(--text); }
.menu-button { display: none; }

.sidebar {
  position: fixed;
  z-index: 30;
  top: var(--topbar-height);
  bottom: 0;
  left: var(--layout-offset);
  width: var(--sidebar-width);
  overflow-y: auto;
  padding: 36px 20px 28px;
  background: var(--sidebar);
  border-right: 1px solid var(--line);
}

.portrait {
  display: block;
  width: 174px;
  height: 206px;
  margin: 0 auto 20px;
  object-fit: cover;
  object-position: center top;
  border-radius: 2px;
  box-shadow: var(--shadow);
}

.identity { text-align: center; }
.identity__name { margin: 0; font-family: var(--serif); font-size: 22px; line-height: 1.3; }
.identity__role { margin: 7px 0 0; color: var(--muted); font-size: 13px; line-height: 1.55; }

.sidebar__nav { margin: 28px 0 22px; }
.sidebar__nav a {
  display: flex;
  align-items: baseline;
  gap: 9px;
  margin: 2px 0;
  padding: 7px 10px;
  border-radius: 5px;
  color: var(--muted);
  font-size: 14px;
}
.sidebar__nav a:hover { background: var(--note); color: var(--text); text-decoration: none; }
.sidebar__nav a.is-active { background: var(--link-soft); color: var(--link); font-weight: 650; }
.sidebar__nav .nav-index { width: 19px; color: var(--link); font-family: var(--serif); font-size: 12px; }

.sidebar__links {
  padding-top: 17px;
  border-top: 1px solid var(--line);
  font-size: 13px;
  text-align: center;
}
.sidebar__links a { display: inline-block; margin: 3px 6px; }

.sidebar-backdrop { display: none; }

.document {
  min-height: 100vh;
  margin-left: calc(var(--layout-offset) + var(--sidebar-width));
  padding: calc(var(--topbar-height) + 44px) 42px 78px 26px;
}

.article { width: min(900px, 100%); margin: 0; }

.profile-header {
  padding-bottom: 42px;
  border-bottom: 1px solid var(--line);
}
.eyebrow { margin: 0 0 8px; color: var(--link); font-size: 12px; font-weight: 700; letter-spacing: 0.13em; text-transform: uppercase; }
.profile-header h1 { margin: 0; font-family: var(--serif); font-size: clamp(38px, 6vw, 62px); font-weight: 500; line-height: 1.08; letter-spacing: -0.025em; }
.profile-header__subtitle { margin: 13px 0 0; color: var(--muted); font-family: var(--serif); font-size: 20px; }

.lead-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.65fr) minmax(240px, 0.75fr);
  gap: 42px;
  margin-top: 34px;
}
.lead { margin: 0; font-family: var(--serif); font-size: 19px; line-height: 1.85; }

.summary-box,
.note-box {
  padding: 20px 22px;
  background: var(--note);
  border-left: 3px solid var(--link);
}
.summary-box h2,
.note-box h3 { margin: 0 0 12px; font-family: var(--serif); font-size: 17px; }
.summary-box dl { margin: 0; }
.summary-box dt { margin-top: 11px; color: var(--muted); font-size: 11px; font-weight: 700; letter-spacing: 0.08em; text-transform: uppercase; }
.summary-box dd { margin: 1px 0 0; font-size: 13px; line-height: 1.55; }

.research-map {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  margin-top: 36px;
  border-top: 1px solid var(--line);
  border-left: 1px solid var(--line);
}
.research-map__item { min-height: 116px; padding: 18px 20px; border-right: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.research-map__item span:first-child { display: block; margin-bottom: 9px; color: var(--link); font-family: var(--serif); font-size: 14px; }
.research-map__item strong { font-family: var(--serif); font-size: 16px; line-height: 1.45; }

.section { padding: 62px 0 8px; }
.section-heading { display: grid; grid-template-columns: 54px 1fr; align-items: end; margin: 0 0 30px; padding-bottom: 13px; border-bottom: 1px solid var(--line); }
.section-heading__index { color: var(--link); font-family: var(--serif); font-size: 15px; }
.section-heading h2 { margin: 0; font-family: var(--serif); font-size: 30px; font-weight: 500; line-height: 1.2; }
.section-intro { max-width: 730px; margin: -12px 0 30px 54px; color: var(--muted); }

.research-entry { display: grid; grid-template-columns: 54px 1fr; padding: 22px 0; border-bottom: 1px solid var(--line); }
.research-entry__mark { color: var(--link); font-family: var(--serif); font-size: 14px; }
.research-entry h3 { margin: 0 0 8px; font-family: var(--serif); font-size: 20px; font-weight: 600; }
.research-entry p { margin: 0; color: var(--muted); }

.bibliography { margin: 0; padding: 0; list-style: none; counter-reset: papers 11; }
.bibliography li {
  position: relative;
  min-height: 55px;
  padding: 0 0 21px 54px;
  counter-increment: papers -1;
}
.bibliography li::before { content: "[" counter(papers) "]"; position: absolute; left: 0; top: 0; width: 40px; color: var(--link); font-family: var(--serif); }
.bibliography p { margin: 0; }
.bibliography .paper-title { font-family: var(--serif); font-size: 17px; line-height: 1.55; }
.bibliography .paper-meta { margin-top: 2px; color: var(--muted); font-size: 13px; }

.project-list { border-top: 1px solid var(--line); }
.project-row { display: grid; grid-template-columns: 105px 1fr; gap: 24px; padding: 18px 0; border-bottom: 1px solid var(--line); }
.project-year { color: var(--link); font-family: var(--serif); font-size: 14px; }
.project-row h3 { margin: 0 0 3px; font-family: var(--serif); font-size: 17px; }
.project-row p { margin: 0; color: var(--muted); font-size: 14px; }
.subheading { margin: 35px 0 13px; font-family: var(--serif); font-size: 20px; }

.patent-list { margin: 0; padding-left: 24px; }
.patent-list li { padding: 7px 0 10px 8px; }
.patent-list li::marker { color: var(--link); font-family: var(--serif); }

.career-list { position: relative; margin: 0 0 34px; padding: 0; list-style: none; }
.career-list::before { content: ""; position: absolute; left: 6px; top: 10px; bottom: 12px; width: 1px; background: var(--line); }
.career-list li { position: relative; display: grid; grid-template-columns: 160px 1fr; gap: 28px; padding: 0 0 25px 28px; }
.career-list li::before { content: ""; position: absolute; left: 2px; top: 9px; width: 9px; height: 9px; border: 2px solid var(--link); border-radius: 50%; background: var(--page); }
.career-list time { color: var(--link); font-family: var(--serif); font-size: 14px; }
.career-list strong { font-family: var(--serif); }
.career-list p { margin: 2px 0 0; color: var(--muted); font-size: 14px; }

.note-box { margin: 28px 0 0; }
.note-box p { margin: 0; color: var(--muted); }
.admission-note { font-family: var(--serif); font-size: 19px; line-height: 1.9; }
.contact-line { margin-top: 24px; }

.footer { margin-top: 68px; padding-top: 20px; border-top: 1px solid var(--line); color: var(--muted); font-size: 12px; }

@media (max-width: 980px) {
  :root { --sidebar-width: 226px; }
  .sidebar { padding-inline: 18px; }
  .portrait { width: 156px; height: 186px; }
  .document { padding-left: 22px; padding-right: 28px; }
}

@media (max-width: 760px) {
  :root { --topbar-height: 58px; }
  .topbar { padding: 0 14px; }
  .topbar__brand { font-size: 17px; }
  .topbar__link { display: none; }
  .menu-button { display: grid; }
  .sidebar {
    top: 0;
    z-index: 60;
    width: min(304px, 84vw);
    padding-top: 28px;
    transform: translateX(-105%);
    transition: transform 220ms ease;
    box-shadow: var(--shadow);
  }
  body.menu-open { overflow: hidden; }
  body.menu-open .sidebar { transform: translateX(0); }
  .sidebar-backdrop { position: fixed; inset: 0; z-index: 50; background: rgba(10, 14, 20, 0.48); }
  body.menu-open .sidebar-backdrop { display: block; }
  .document { margin-left: 0; padding: calc(var(--topbar-height) + 34px) 22px 62px; }
  .lead-grid { grid-template-columns: 1fr; gap: 26px; }
  .research-map { grid-template-columns: 1fr; }
  .section { padding-top: 50px; }
  .section-intro { margin-left: 0; }
  .project-row { grid-template-columns: 82px 1fr; gap: 16px; }
  .career-list li { grid-template-columns: 1fr; gap: 2px; }
}

@media (max-width: 480px) {
  .profile-header h1 { font-size: 39px; }
  .profile-header__subtitle { font-size: 17px; }
  .lead { font-size: 17px; }
  .section-heading { grid-template-columns: 42px 1fr; }
  .research-entry { grid-template-columns: 42px 1fr; }
  .bibliography li { padding-left: 42px; }
  .project-row { grid-template-columns: 1fr; gap: 1px; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { transition-duration: 0.01ms !important; }
}

/* Component names used by the page markup. */
.topbar-title {
  color: var(--text);
  font-family: var(--serif);
  font-size: 19px;
  font-weight: 700;
  letter-spacing: 0.01em;
}
.topbar-title:hover { text-decoration: none; }
.topbar-actions { display: flex; align-items: center; gap: 7px; }
.topbar-link { padding: 5px 8px; color: var(--muted); font-size: 13px; }

.sidebar { overflow-x: hidden; }
.profile-card { text-align: center; }
.profile-card img {
  display: block;
  width: 174px;
  height: 206px;
  margin: 0 auto 20px;
  object-fit: cover;
  object-position: center top;
  border-radius: 2px;
  box-shadow: var(--shadow);
}
.profile-card h2 { margin: 0; font-family: var(--serif); font-size: 22px; line-height: 1.3; }
.profile-card p { margin: 7px 0 0; color: var(--muted); font-size: 13px; line-height: 1.55; }
.profile-card .affiliation { margin-top: 16px; }

.contents { margin: 27px 0 22px; }
.contents-label { margin: 0 0 7px; color: var(--text); font-family: var(--serif); font-size: 14px; font-weight: 700; }
.contents a {
  display: block;
  margin: 2px 0;
  padding: 6px 10px;
  border-radius: 5px;
  color: var(--muted);
  font-size: 13px;
}
.contents a:hover { background: var(--note); color: var(--text); text-decoration: none; }
.contents a.is-active { background: var(--link-soft); color: var(--link); font-weight: 650; }

.sidebar-links { padding-top: 17px; border-top: 1px solid var(--line); font-size: 12px; text-align: center; }
.sidebar-links a { display: block; margin: 5px 0; overflow-wrap: anywhere; }

.document > article { width: min(900px, 100%); margin: 0; }
.doc-section { padding: 62px 0 8px; }
.profile-section { padding-top: 0; }

.article-header { padding-bottom: 28px; border-bottom: 1px solid var(--line); }
.article-kicker { margin: 0 0 8px; color: var(--link); font-size: 12px; font-weight: 700; letter-spacing: 0.13em; text-transform: uppercase; }
.article-header h1 { margin: 0; font-family: var(--serif); font-size: clamp(38px, 6vw, 62px); font-weight: 500; line-height: 1.08; letter-spacing: -0.025em; }
.author-line { display: flex; flex-wrap: wrap; gap: 6px 9px; margin-top: 18px; color: var(--muted); }
.author-line strong { color: var(--text); }

.lead-copy > p:not(.lead) { margin: 18px 0 0; color: var(--muted); }
.summary-note {
  padding: 20px 22px;
  background: var(--note);
  border-left: 3px solid var(--link);
}
.summary-note h3 { margin: 0 0 12px; font-family: var(--serif); font-size: 17px; }
.summary-note dl { margin: 0; }
.summary-note dl > div + div { margin-top: 11px; }
.summary-note dt { color: var(--muted); font-size: 11px; font-weight: 700; letter-spacing: 0.08em; text-transform: uppercase; }
.summary-note dd { margin: 1px 0 0; font-size: 13px; line-height: 1.55; }

.research-map > div { min-height: 116px; padding: 18px 20px; border-right: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.research-map > div > span { display: block; margin-bottom: 9px; color: var(--link); font-family: var(--serif); font-size: 14px; }
.research-map strong { display: block; font-family: var(--serif); font-size: 16px; line-height: 1.45; }
.research-map small { display: block; margin-top: 5px; color: var(--muted); font-size: 11px; }

.section-heading { grid-template-columns: 54px 1fr; }
.section-number { color: var(--link); font-family: var(--serif); font-size: 15px; }
.section-heading p { margin: 5px 0 0; color: var(--muted); font-size: 14px; }

.research-entry { display: block; margin-left: 54px; }
.research-entry h3 { position: relative; }
.research-entry h3::before { content: "—"; position: absolute; left: -54px; color: var(--link); font-weight: 400; }
.research-entry .keywords { margin-top: 9px; color: var(--link); font-size: 12px; letter-spacing: 0.015em; }

.bibliography li { display: grid; grid-template-columns: 52px 1fr; gap: 2px; padding-left: 54px; }
.bibliography li::before { top: 1px; }
.bibliography .year { color: var(--muted); font-family: var(--serif); font-size: 13px; }
.bibliography li p { font-family: var(--serif); font-size: 15px; line-height: 1.62; }
.paper-link { color: var(--text); text-decoration: underline; text-decoration-color: color-mix(in srgb, var(--link) 45%, transparent); text-underline-offset: 3px; }
.paper-link:hover { color: var(--link); text-decoration-color: var(--link); }
.publication-note { margin: -4px 0 15px 54px; color: var(--muted); font-size: 12px; }
.inline-link { display: inline-block; margin-left: 54px; padding-bottom: 2px; border-bottom: 1px solid color-mix(in srgb, var(--link) 40%, transparent); font-size: 13px; }
.inline-link:hover { text-decoration: none; border-color: var(--link); }

.project-group { border-top: 1px solid var(--line); }
.project-group > h3 { margin: 0; padding: 15px 0; font-family: var(--serif); font-size: 18px; }
.project-group.compact { margin-top: 36px; }
.project-row time { color: var(--link); font-family: var(--serif); font-size: 14px; }
.project-row strong { display: block; font-family: var(--serif); font-size: 16px; line-height: 1.55; }

.patent-list { margin: 0; padding: 0; }
.patent-list article { display: grid; grid-template-columns: 54px 1fr; padding: 18px 0; border-bottom: 1px solid var(--line); }
.patent-list article:first-child { border-top: 1px solid var(--line); }
.patent-list article > span { color: var(--link); font-family: var(--serif); font-size: 13px; }
.patent-list h3 { margin: 0; font-family: var(--serif); font-size: 17px; font-weight: 600; }
.patent-list p { margin: 4px 0 0; color: var(--muted); font-size: 13px; }

.career-list > div { position: relative; display: grid; grid-template-columns: 160px 1fr; gap: 28px; padding: 0 0 25px 28px; }
.career-list > div::before { content: ""; position: absolute; left: 2px; top: 9px; width: 9px; height: 9px; border: 2px solid var(--link); border-radius: 50%; background: var(--page); }
.career-list time { color: var(--link); font-family: var(--serif); font-size: 14px; }
.career-list p { margin: 0; }
.career-list p > strong { display: block; font-family: var(--serif); }
.career-list p > span { display: block; margin-top: 2px; color: var(--muted); font-size: 14px; }
.admission-note > p { font-family: var(--serif); font-size: 18px; line-height: 1.85; }
.admission-note ul { padding-left: 21px; color: var(--muted); }
.contact-row { display: flex; flex-wrap: wrap; gap: 10px 24px; margin-top: 25px; padding: 16px 0; border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); font-size: 14px; }
.doc-footer { display: flex; justify-content: space-between; gap: 20px; margin-top: 68px; padding-top: 20px; border-top: 1px solid var(--line); color: var(--muted); font-size: 12px; }
.doc-footer p { margin: 0; }

.postdoc-nav-link { margin-top: 11px !important; border-top: 1px solid var(--line); padding-top: 14px !important; color: var(--link) !important; }

.postdoc-strip {
  display: grid;
  grid-template-columns: 112px minmax(0, 1fr) auto;
  align-items: center;
  gap: 22px;
  margin-top: 22px;
  padding: 17px 0;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  color: var(--text);
}
.postdoc-strip:hover { text-decoration: none; }
.postdoc-strip__label { color: var(--link); font-size: 11px; font-weight: 700; letter-spacing: 0.1em; text-transform: uppercase; }
.postdoc-strip__copy strong { display: block; font-family: var(--serif); font-size: 17px; line-height: 1.4; }
.postdoc-strip__copy small { display: block; margin-top: 2px; color: var(--muted); font-size: 12px; }
.postdoc-strip__action { color: var(--link); font-size: 13px; white-space: nowrap; }
.postdoc-strip:hover .postdoc-strip__action { text-decoration: underline; text-underline-offset: 3px; }

.detail-page .topbar { padding-inline: max(28px, calc((100vw - 960px) / 2)); }
.detail-page .document { display: flex; justify-content: center; margin-left: 0; padding: calc(var(--topbar-height) + 42px) 28px 64px; }
.detail-article { flex: 0 1 720px; width: 100%; margin: 0 auto; text-align: left; }
.back-link { display: inline-block; margin-bottom: 26px; color: var(--muted); font-size: 13px; }
.simple-job-header { padding-bottom: 28px; border-bottom: 1px solid var(--line); }
.simple-job-header h1 { margin: 0; font-family: var(--serif); font-size: clamp(32px, 5vw, 44px); font-weight: 500; line-height: 1.16; letter-spacing: -0.018em; }
.simple-job-header > p:last-child { margin: 18px 0 0; color: var(--muted); font-size: 16px; line-height: 1.75; }
.simple-job-section { padding: 27px 0; border-bottom: 1px solid var(--line); }
.simple-job-section h2 { margin: 0 0 13px; font-family: var(--serif); font-size: 22px; font-weight: 600; }
.simple-job-section ol,
.simple-job-section ul { margin: 0; padding-left: 22px; }
.simple-job-section li { margin: 7px 0; padding-left: 4px; }
.simple-job-details { margin: 0; }
.simple-job-details > div { display: grid; grid-template-columns: 140px 1fr; gap: 18px; padding: 6px 0; }
.simple-job-details dt { color: var(--muted); font-weight: 650; }
.simple-job-details dd { margin: 0; }
.simple-job-apply p { margin: 0 0 12px; }
.simple-job-apply p:last-child { margin: 17px 0 0; }
.apply-link { font-weight: 650; }
.detail-footer { margin-top: 42px; }

@media (max-width: 980px) {
  .profile-card img { width: 156px; height: 186px; }
}

@media (max-width: 760px) {
  .topbar-title { font-size: 17px; }
  .desktop-only { display: none; }
  .doc-section { padding-top: 50px; }
  .profile-section { padding-top: 0; }
  .career-list > div { grid-template-columns: 1fr; gap: 2px; }
  .doc-footer { display: block; }
  .doc-footer p + p { margin-top: 5px; }
  .postdoc-strip { grid-template-columns: 1fr auto; gap: 4px 16px; }
  .postdoc-strip__label { grid-column: 1 / -1; }
}

@media (max-width: 480px) {
  .research-entry { margin-left: 42px; }
  .research-entry h3::before { left: -42px; }
  .bibliography li { grid-template-columns: 1fr; padding-left: 42px; }
  .patent-list article { grid-template-columns: 42px 1fr; }
  .postdoc-strip { grid-template-columns: 1fr; }
  .postdoc-strip__action { margin-top: 7px; }
  .detail-page .document { padding-inline: 20px; }
  .simple-job-details > div { grid-template-columns: 1fr; gap: 0; padding: 7px 0; }
}