/* Local stylesheet. No Google Fonts, external CSS, trackers, or CDN dependencies. */
:root {
  --ink: #1e2c34;
  --muted: #5b6a72;
  --accent: #173e51;
  --accent-hover: #28647b;
  --paper: #fcfcfa;
  --line: #dee4e5;
  --soft: #f0f4f3;
  --serif: Georgia, "Times New Roman", "Songti SC", SimSun, serif;
  --sans: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Microsoft YaHei", Arial, sans-serif;
}
* { box-sizing: border-box; }
[hidden] { display: none !important; }
html { scroll-behavior: smooth; scroll-padding-top: 110px; }
body { margin: 0; background: var(--paper); color: var(--ink); font-family: var(--sans); font-size: 16px; line-height: 1.7; -webkit-font-smoothing: antialiased; }
a { color: var(--accent); text-decoration-thickness: 1px; text-underline-offset: 3px; }
a:hover { color: var(--accent-hover); }
a:focus-visible, button:focus-visible, input:focus-visible { outline: 3px solid #a7622b; outline-offset: 4px; }
p, h1, h2, h3 { margin: 0; }
h1, h2, h3 { text-wrap: pretty; }
button, input { font: inherit; }
.skip-link { position: fixed; z-index: 99; left: 20px; top: -100px; padding: 10px 18px; background: var(--accent); color: #fff; }
.skip-link:focus { top: 12px; }
.site-header { background: rgba(252,252,250,.97); border-top: 4px solid var(--accent); border-bottom: 1px solid var(--line); }
.header-inner { max-width: 1180px; margin: auto; padding: 23px 40px; display: flex; align-items: center; justify-content: space-between; gap: 25px; }
.wordmark { display: inline-flex; align-items: center; gap: 12px; font-family: var(--serif); font-size: 21px; font-weight: 600; letter-spacing: -.4px; text-decoration: none; white-space: nowrap; }
.wordmark > [lang] { font-family: var(--sans); font-size: 16px; font-weight: 400; color: var(--muted); letter-spacing: 1px; margin-left: 1px; }
.wordmark-dot { width: 8px; height: 8px; border-radius: 50%; background: var(--accent); margin-right: 1px; }
nav { display: flex; gap: 30px; align-items: center; }
nav a { text-decoration: none; color: var(--muted); font-size: 14px; padding: 6px 0; border-bottom: 2px solid transparent; }
nav a[aria-current="page"] { color: var(--accent); border-bottom-color: var(--accent); font-weight: 600; }
nav a:hover { border-bottom-color: var(--line); }
.layout { max-width: 1180px; margin: auto; display: grid; grid-template-columns: 248px minmax(0, 1fr); gap: 70px; padding: 56px 40px 86px; align-items: start; }
.layout--content { display: block; max-width: 960px; }
.profile { position: sticky; top: 34px; padding-right: 8px; }
.portrait { width: 170px; height: 200px; display: block; object-fit: cover; object-position: center 10%; border-radius: 2px; margin-bottom: 25px; }
.profile-name { font-family: var(--serif); font-size: 27px; font-weight: 500; line-height: 1.4; letter-spacing: -.6px; }
.profile-name [lang] { display: block; color: var(--muted); font-family: var(--sans); font-size: 19px; font-weight: 400; margin-top: 3px; letter-spacing: 3px; }
.profile-role { color: var(--accent); font-size: 14px; font-weight: 600; line-height: 1.55; margin-top: 18px; }
.profile-affiliation { margin-top: 17px; font-size: 13px; line-height: 1.75; }
.profile-affiliation a { display: block; text-decoration: none; color: var(--muted); }
.profile-affiliation a:hover { text-decoration: underline; color: var(--accent); }
.profile-affiliation a + a { margin-top: 6px; }
.profile-contact { border-top: 1px solid var(--line); margin-top: 27px; padding-top: 23px; font-size: 13px; }
.profile-contact > div + div { margin-top: 22px; }
.small-label { display: block; color: var(--muted); font-size: 10px; line-height: 1.4; letter-spacing: 1.4px; font-weight: 650; margin-bottom: 7px; }
.email { text-decoration: none; overflow-wrap: anywhere; font-weight: 500; }
.email > span { margin-left: 7px; }
address { font-style: normal; color: var(--muted); line-height: 1.8; }
main { min-width: 0; }
main:focus { outline: none; }
.eyebrow { color: var(--accent); font-size: 10px; font-weight: 650; letter-spacing: 2.2px; margin-bottom: 10px; }
h1 { font-family: var(--serif); font-size: 52px; line-height: 1.12; font-weight: 500; letter-spacing: -1.4px; }
.page-deck { font-family: var(--serif); color: var(--muted); font-size: 20px; line-height: 1.5; margin-top: 18px; }
.page-heading { margin-bottom: 28px; }
.about-copy { line-height: 1.8; }
.section { margin-top: 40px; }
.section-heading { display: flex; align-items: center; gap: 17px; margin-bottom: 18px; }
h2 { font-family: var(--serif); font-size: 26px; line-height: 1.3; font-weight: 500; letter-spacing: -.35px; }
.section-line { flex: 1; min-width: 12px; height: 1px; background: var(--line); }
.section-count { font-size: 11px; color: var(--muted); font-variant-numeric: tabular-nums; }
.section-intro { font-size: 14px; color: var(--muted); margin-bottom: 18px; }
.research-list { margin: 0; padding: 0; list-style: none; border-top: 1px solid var(--line); }
.research-list li { display: flex; gap: 20px; align-items: baseline; padding: 14px 16px; border-bottom: 1px solid var(--line); background: var(--soft); font-size: 15px; line-height: 1.65; }
.research-number { font-family: var(--serif); font-size: 14px; color: var(--accent); flex: 0 0 23px; }
.timeline-row { display: grid; grid-template-columns: 146px minmax(0, 1fr); gap: 19px; padding: 18px 0; border-bottom: 1px solid var(--line); }
.timeline-row:first-child { padding-top: 0; }
.timeline-date { color: var(--muted); font-size: 12px; line-height: 1.8; padding-top: 2px; font-variant-numeric: tabular-nums; }
h3 { font-size: 15px; line-height: 1.6; font-weight: 600; }
.timeline-row p:not(.timeline-date) { font-size: 14px; line-height: 1.75; }
.timeline-row .meta { margin-top: 5px; }
.meta { color: var(--muted); font-size: 12px !important; font-weight: 400; }
.publication-section { margin-top: 33px; }
.publication-list { list-style: none; margin: 0; padding: 0; }
.publication { display: grid; grid-template-columns: 28px minmax(0,1fr); gap: 14px; padding: 23px 0; border-bottom: 1px solid var(--line); }
.publication:first-child { padding-top: 3px; }
.publication-number { font-family: var(--serif); color: var(--muted); font-size: 13px; line-height: 2; }
.publication h3 { font-size: 17px; font-weight: 600; line-height: 1.5; }
.publication h3 a { color: var(--ink); text-decoration: none; }
.publication h3 a:hover { color: var(--accent-hover); text-decoration: underline; }
.publication-authors { font-size: 13px; color: var(--muted); margin-top: 7px; line-height: 1.65; }
.publication-venue { font-size: 13px; margin-top: 6px; line-height: 1.75; }
.publication-note { color: var(--muted); font-size: 12px; margin-top: 20px; }
.paper-links { margin-top: 11px; display: flex; gap: 15px; }
.paper-link { font-size: 11px; line-height: 1.4; text-decoration: none; color: var(--accent); border: 1px solid #cbd6d9; border-radius: 3px; padding: 4px 8px; }
.paper-link span { margin-left: 5px; }
.paper-link:hover { background: var(--soft); }
.course { display: grid; grid-template-columns: 136px minmax(0, 1fr); gap: 25px; padding: 20px 0; border-top: 1px solid var(--line); }
.teaching-section .course:first-child { border-top: 0; padding-top: 0; }
.course-date { font-size: 13px; font-variant-numeric: tabular-nums; }
.course-date span { display: block; }
.course-date .meta { margin-top: 2px; }
.course-code { display: block; color: var(--accent); font-size: 10px; letter-spacing: .7px; font-weight: 650; margin-bottom: 5px; }
.course h3 { font-size: 15px; line-height: 1.5; }
.site-footer { border-top: 1px solid var(--line); }
.site-footer > div { max-width: 1180px; margin: auto; padding: 23px 40px 30px; display: flex; justify-content: space-between; gap: 20px; color: var(--muted); font-size: 11px; }
.footer-divider { margin: 0 9px; color: #91a0a5; }
@media (min-width: 1500px) { .layout { padding-top: 65px; } }
@media (max-width: 1020px) {
  .layout { grid-template-columns: 220px minmax(0,1fr); gap: 40px; padding-left: 30px; padding-right: 30px; }
  .header-inner { padding-left: 30px; padding-right: 30px; }
  .timeline-row { grid-template-columns: 123px minmax(0,1fr); gap: 15px; }
  .course { grid-template-columns: 118px minmax(0,1fr); gap: 18px; }
  h1 { font-size: 46px; }
}
@media (max-width: 780px) {
  .header-inner { padding: 18px 24px; flex-wrap: wrap; gap: 12px; }
  .wordmark { font-size: 21px; }
  nav { gap: 24px; }
  .layout { display: block; padding: 30px 24px 55px; }
  .profile { position: static; display: grid; grid-template-columns: 1fr 1fr; gap: 20px 28px; border-bottom: 1px solid var(--line); padding: 0 0 26px; margin-bottom: 35px; }
  .identity { display: flex; gap: 16px; align-items: flex-start; grid-column: 1; }
  .portrait { width: 100px; height: 120px; min-width: 100px; margin: 0; }
  .profile-name { font-size: 22px; }
  .profile-name [lang] { font-size: 15px; margin-top: 2px; }
  .profile-role { font-size: 12px; margin-top: 11px; }
  .profile-affiliation { margin: 0; grid-column: 2; grid-row: 1; padding-top: 2px; }
  .profile-contact { display: flex; gap: 28px; padding: 0; margin: 0; border: 0; grid-column: 1 / -1; font-size: 12px; }
  .profile-contact > div { flex: 1; }
  .profile-contact > div + div { margin: 0; }
  .profile-contact address { line-height: 1.6; }
  .small-label { margin-bottom: 5px; }
  .page-heading { margin-bottom: 23px; }
  h1 { font-size: 44px; }
  h2 { font-size: 25px; }
  .page-deck { font-size: 19px; }
  .section { margin-top: 32px; }
  .research-list li { padding: 13px 7px; gap: 5px; font-size: clamp(13px, 2.8vw, 15px); letter-spacing: -.2px; }
  .research-number { flex-basis: 20px; }
  .timeline-row { grid-template-columns: 137px minmax(0,1fr); }
  .site-footer > div { padding-left: 24px; padding-right: 24px; }
}
@media (max-width: 490px) {
  body { font-size: 15px; }
  .header-inner { display: block; padding: 15px 20px 11px; }
  nav { margin-top: 12px; gap: 25px; }
  nav a { font-size: 13px; }
  .layout { padding: 26px 20px 45px; }
  .profile { display: block; margin-bottom: 29px; padding-bottom: 23px; }
  .identity { align-items: center; }
  .profile-role { margin-top: 6px; }
  .profile-role br { display: none; }
  .profile-role br::after { content: ' '; }
  .profile-affiliation { margin-top: 15px; font-size: 12px; }
  .profile-affiliation br { display: none; }
  .profile-contact { margin-top: 19px; gap: 18px; }
  .profile-contact > div:first-child { flex: 1.05; }
  .profile-contact > div:last-child { flex: 1; }
  .profile-contact address { font-size: 11px; }
  .email { font-size: 11px; }
  .email > span { display: none; }
  h1 { font-size: 40px; }
  .eyebrow { font-size: 9px; letter-spacing: 1.9px; }
  .page-deck { font-size: 18px; }
  .about-copy { font-size: 15px; }
  .timeline-row { grid-template-columns: 1fr; gap: 5px; padding: 18px 0; }
  .timeline-date { font-size: 11px; }
  .publication { grid-template-columns: 23px minmax(0,1fr); gap: 8px; }
  .publication h3 { font-size: 16px; }
  .publication-authors, .publication-venue { font-size: 12px; }
  .course { grid-template-columns: 1fr; gap: 8px; }
  .course-date { display: flex; gap: 10px; align-items: baseline; font-size: 12px; }
  .course-date .meta { font-size: 11px !important; }
  .course h3 { font-size: 14px; }
  .section-heading { gap: 12px; }
  .site-footer > div { display: block; padding-left: 20px; padding-right: 20px; }
  .site-footer > div > span { display: block; }
  .site-footer > div > span + span { margin-top: 7px; }
}
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } }
@media print {
  body { background: #fff; font-size: 11pt; }
  .site-header, .site-footer, .skip-link { display: none; }
  .layout { display: block; padding: 0; }
  .profile { position: static; border-bottom: 1px solid #aaa; padding-bottom: 16px; margin-bottom: 25px; }
  .portrait, .profile-affiliation, .profile-contact { display: none; }
  .profile-name [lang] { display: inline; margin-left: 10px; }
  .profile-role br { display: none; }
  .profile-role { margin-top: 5px; }
  h1 { font-size: 28pt; }
  .page-deck { font-size: 13pt; }
  .publication, .timeline-row, .course { break-inside: avoid; }
  .paper-links { display: none; }
  .section { margin-top: 24px; }
  a { text-decoration: none; }
}