:root { color-scheme: light; --ink:#262b30; --muted:#656b73; --accent:#c65328; --link:#2f5c8f; --rule:#e2e2df; --paper:#fff; }
* { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 24px; }
body { margin:0; background:#fcfcfa; color:var(--ink); font-family:Georgia,Cambria,"Times New Roman",serif; font-size:16px; line-height:1.75; }
a { color:var(--link); text-decoration:none; text-underline-offset:3px; overflow-wrap:anywhere; }
a:hover { color:var(--accent); text-decoration:underline; }
a:focus-visible { outline:2px solid var(--accent); outline-offset:4px; border-radius:2px; }
.site-header { background:var(--paper); border-bottom:1px solid var(--rule); }
.header-inner { max-width:1080px; margin:auto; padding:26px 32px 0; }
.wordmark { color:var(--ink); font-size:24px; font-weight:bold; display:inline-block; line-height:1.3; }
.wordmark span { display:block; color:var(--muted); font-size:12px; font-family:Arial,sans-serif; font-weight:normal; letter-spacing:.04em; margin-top:7px; }
.header-inner nav { display:flex; flex-wrap:wrap; gap:0 23px; margin-top:19px; }
.header-inner nav a { display:block; padding:10px 0 12px; font-family:Arial,sans-serif; font-size:13px; color:#525960; border-bottom:2px solid transparent; }
.header-inner nav a[aria-current] { color:var(--accent); border-bottom-color:var(--accent); }
.site-main { max-width:1000px; padding:48px 32px 62px; margin:auto; min-height:65vh; }
h1,h2,h3,p { margin-top:0; }
h1 { font-size:36px; font-weight:normal; line-height:1.25; margin-bottom:18px; }
h2 { font-size:23px; line-height:1.4; font-weight:normal; margin:32px 0 16px; }
h3 { font-size:18px; line-height:1.5; }
.eyebrow { font-family:Arial,sans-serif; color:var(--muted); font-size:11px; letter-spacing:.17em; margin-bottom:8px; }
.page-heading { border-bottom:1px solid var(--rule); margin-bottom:30px; padding-bottom:7px; }
.page-heading h1 { color:var(--accent); }
.profile { display:grid; grid-template-columns:240px minmax(0,1fr); gap:32px; align-items:start; }
.portrait { display:block; width:240px; max-width:100%; height:auto; object-fit:contain; align-self:start; }
.profile-content { min-width:0; }
.profile-links { display:flex; flex-wrap:wrap; align-items:center; gap:8px 20px; margin:0; font-size:16px; line-height:30px; }
.profile-links .chinese-link { font-size:18px; font-family:"Songti SC","Noto Serif CJK SC",serif; }
.profile-email-link { white-space:nowrap; }
.bio { font-size:16px; line-height:1.8; margin:0 0 18px; text-align:justify; }
.openings { border-left:3px solid var(--accent); background:#f6f3ee; padding:15px 20px; margin:32px 0 40px; font-size:15px; }
.home-section { margin-top:36px; }
.section-heading { display:flex; justify-content:space-between; align-items:baseline; gap:18px; border-bottom:1px solid var(--rule); padding-bottom:9px; margin-bottom:20px; }
.section-heading h2 { margin:0; color:var(--accent); }
.section-heading>a { font-size:14px; }
.research-overview { display:grid; grid-template-columns:repeat(3,minmax(0,1fr)); gap:25px; margin:25px 0 35px; }
.overview-item h3 { font-weight:normal; margin:0 0 9px; }
.overview-item p { color:var(--muted); font-size:15px; margin:0; line-height:1.65; }
.research-vision { font-size:17px; line-height:1.8; margin-bottom:32px; }
.research-direction { margin:32px 0 38px; }
.research-direction h2 { color:var(--accent); padding-bottom:9px; border-bottom:1px solid var(--rule); }
.research-direction ul { padding-left:22px; margin:0; }
.research-direction li { padding-left:3px; margin:14px 0; line-height:1.9; }
.research-direction a { color:var(--link); }
.list-entry { padding:14px 0; border-bottom:1px solid var(--rule); }
.list-entry:last-child { border-bottom:0; }
papertitle { font-weight:bold; }
.list-entry papertitle { color:var(--muted); font-weight:normal; font-variant-numeric:tabular-nums; margin-right:10px; }
.year-nav { display:flex; flex-wrap:wrap; gap:9px 22px; padding:0 0 18px; margin:0 0 30px; border-bottom:1px solid var(--rule); }
.year-heading { color:var(--accent); margin:35px 0 7px; }
.publication { padding:15px 0; border-bottom:1px solid var(--rule); line-height:1.8; }
.dated-entry { display:grid; grid-template-columns:minmax(0,1fr) 150px; gap:28px; padding:17px 0; border-bottom:1px solid var(--rule); }
.entry-date { color:var(--muted); text-align:right; font-size:14px; white-space:nowrap; }
.plain-list { padding-left:21px; margin:0 0 28px; }
.plain-list li { padding-left:3px; margin:9px 0; }
.alumni-heading { color:var(--muted); font-size:15px; font-style:italic; font-weight:normal; margin-bottom:15px; }
.book-grid { display:grid; grid-template-columns:repeat(2,minmax(0,1fr)); gap:45px; }
.book { font-size:15px; }
.book img { width:auto; max-width:100%; height:260px; object-fit:contain; object-position:left bottom; border:1px solid var(--rule); }
.book papertitle { font-size:18px; }
.explore-links { display:flex; flex-wrap:wrap; gap:12px 30px; border-top:1px solid var(--rule); padding-top:24px; margin:30px 0 0; font-size:15px; }
.site-footer { max-width:1000px; margin:auto; padding:24px 32px 32px; border-top:1px solid var(--rule); display:flex; justify-content:space-between; gap:15px; font-size:12px; color:var(--muted); }
.skip-link { position:absolute; left:-9999px; }
.skip-link:focus { left:15px; top:10px; padding:8px 15px; background:white; z-index:10; }
@media(min-width:701px) and (max-width:900px) { .profile { grid-template-columns:220px minmax(0,1fr); gap:28px; } .portrait { width:220px; } }
@media(max-width:700px) {
 .header-inner { padding:22px 22px 0; } .header-inner nav { gap:0 20px; margin-top:16px; }
 .header-inner nav a { padding:8px 0; font-size:13px; }
 .site-main { padding:32px 22px 42px; } .profile { display:block; }
 
 .portrait { width:220px; height:auto; float:none; margin:0 0 24px; }
 .profile .bio { padding-top:0; } .research-overview { grid-template-columns:1fr; gap:21px; }
 .section-heading { align-items:start; flex-direction:column; gap:5px; } .section-heading>a { font-size:13px; }
 .dated-entry { grid-template-columns:1fr; gap:5px; } .entry-date { text-align:left; }
 .book-grid { grid-template-columns:1fr; gap:40px; } .site-footer { margin:0 22px; padding:20px 0; flex-direction:column; gap:5px; }
 h1 { font-size:30px; } h2 { font-size:22px; }
}
@media(prefers-reduced-motion:reduce) { html { scroll-behavior:auto; } }
@media print { .site-header,.site-footer,.skip-link,.year-nav { display:none; } body { background:white; font-size:11pt; } .site-main { padding:0; max-width:none; } a { color:inherit; } .publication,.dated-entry { break-inside:avoid; } }

/* Four-page navigation and fully visible content sections. */
.header-inner nav { gap:0 30px; }
.section-nav { display:flex; flex-wrap:wrap; gap:8px 26px; margin:0 0 26px; font-size:15px; }
.module { border-top:1px solid var(--rule); margin:0; }
.module:last-child { border-bottom:1px solid var(--rule); }
.module>h2 { color:var(--accent); margin:0; padding:22px 0 16px; font-size:24px; }
.module-body { padding:4px 0 28px; }
.module-body h3 { font-size:20px; font-weight:normal; margin:25px 0 14px; }
.module-body .research-direction h3 { color:var(--accent); border-bottom:1px solid var(--rule); padding-bottom:9px; }
.module-body .research-vision { margin-bottom:22px; }
@media(max-width:700px) { .header-inner nav { gap:0 23px; } .module>h2 { font-size:22px; } .section-nav { gap:8px 20px; } }

/* Homepage bilingual identity lives in the masthead. */
.wordmark.has-signature { display:inline-flex; align-items:center; gap:20px; font-size:30px; line-height:1.2; }
.header-signature { display:block; width:140px; height:auto; }
@media(max-width:700px) { .wordmark.has-signature { font-size:27px; gap:16px; } .header-signature { width:125px; } }

.site-name { margin:0; font-size:inherit; line-height:1; }

@media(max-width:380px) { .wordmark.has-signature { font-size:24px; gap:12px; } .header-signature { width:110px; } }

.profile-contact { display:inline-flex; align-items:center; gap:20px; white-space:nowrap; line-height:30px; }