/* Cheng Lab: shared editorial layout. Independent of generated Tailwind utilities. */
@import url("lab-palette.css?v=20260916");
html{scroll-behavior:smooth;scroll-padding-top:110px}
body{margin:0;background:var(--lab-paper);color:var(--lab-ink);font-family:Inter,-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Microsoft YaHei",sans-serif;-webkit-font-smoothing:antialiased}
*,*::before,*::after{box-sizing:border-box}
a,button,input,select,textarea{touch-action:manipulation}
a{color:inherit}
button,a,input,select,textarea,summary{outline-offset:5px}
:focus-visible{outline:2px solid var(--lab-green)}
img{max-width:100%}
.lab-wrap{width:min(1240px,calc(100% - 96px));margin-inline:auto}
.lab-skip{position:fixed;top:-100px;left:24px;z-index:100;background:white;padding:15px}
.lab-skip:focus{top:10px}
.lab-header{position:sticky;top:0;z-index:40;background:var(--lab-paper);border-bottom:1px solid var(--lab-line)}
.lab-nav-row{min-height:94px;display:flex;align-items:center;justify-content:space-between;gap:28px}
.lab-brand{display:flex;align-items:center;gap:13px;text-decoration:none;flex-shrink:0;color:var(--lab-green)}
.lab-brand img{width:44px;height:44px;object-fit:contain}
.lab-brand>span{font-family:var(--lab-serif);font-size:28px;font-weight:600;line-height:1.15}
.lab-brand small{display:block;font:9px/1.8 sans-serif;letter-spacing:.15em;margin-top:6px}
.lab-navigation{display:flex;align-items:center;gap:24px;font-size:13px;font-weight:500}
.lab-navigation>a{white-space:nowrap;padding:12px 0;text-decoration:none;border-bottom:1px solid transparent}
.lab-navigation>a:hover,.lab-navigation>a[aria-current]{color:var(--lab-green);border-bottom-color:var(--lab-green)}
.lab-language{display:flex;align-items:center;border-left:1px solid var(--lab-line);padding-left:16px;gap:3px}
.lab-language select{font:inherit;color:var(--lab-ink);background:transparent;border:0;max-width:100px;padding:8px 3px}
.lab-language button{padding:8px;font-size:20px;background:transparent;border:0;cursor:pointer}
.lab-menu-button{border:1px solid var(--lab-line);padding:8px 12px;background:transparent;font:inherit}
.lab-menu-button:not([hidden]){display:none}
.lab-hero{padding:64px 0 68px;border-bottom:1px solid var(--lab-line)}
.lab-hero-grid{display:grid;grid-template-columns:1.15fr 1fr;gap:70px;align-items:center}
.lab-eyebrow{font-size:11px;font-weight:600;letter-spacing:.16em;line-height:1.6;margin:0 0 24px;text-transform:uppercase;color:var(--lab-purple)}
.lab-hero h1{font-family:var(--lab-serif);font-weight:400;font-size:clamp(40px,4.2vw,64px);line-height:1.1;letter-spacing:-.04em;margin:0 0 28px;color:var(--lab-green)}
.lab-hero h1 em{color:var(--lab-green);font-weight:400}
html[lang^="zh"] .lab-hero h1{line-height:1.4;letter-spacing:.01em;font-size:clamp(36px,4.1vw,60px)}
html[lang^="zh"] .lab-hero h1 em{font-style:normal}
.lab-lead{font-size:17px;line-height:1.85;color:var(--lab-muted);max-width:540px;margin:0 0 30px}
.lab-actions{display:flex;align-items:center;gap:24px;flex-wrap:wrap}
.lab-button{display:inline-flex;justify-content:center;align-items:center;gap:26px;background:var(--lab-green);border:1px solid var(--lab-green);color:white;padding:14px 22px;min-height:48px;font-size:13px;text-decoration:none;cursor:pointer;font-weight:500}
.lab-button:hover{background:var(--lab-green-hover);border-color:var(--lab-green-hover)}
.lab-text-link{display:inline-block;font-size:13px;font-weight:600;text-decoration:none;border-bottom:1px solid var(--lab-line);padding:7px 0}
.lab-text-link:hover{border-color:var(--lab-green);color:var(--lab-green)}
.lab-affiliation{font-size:11px;color:var(--lab-muted);line-height:1.8;border-left:2px solid var(--lab-line);padding-left:16px;margin-top:36px}
.lab-hero-paper{background:var(--lab-purple-tint);border:1px solid var(--lab-purple-line);border-top:3px solid var(--lab-purple)}
.lab-paper-top{display:flex;align-items:center;justify-content:space-between;gap:12px;padding:16px 22px;border-bottom:1px solid var(--lab-line)}
.lab-paper-top .lab-eyebrow{margin:0;font-size:10px}
.lab-paper-top time{font-size:11px;color:var(--lab-muted);white-space:nowrap}
.lab-hero-figure{display:block;background:var(--lab-surface)}
.lab-hero-figure img{display:block;width:100%;height:275px;object-fit:contain;padding:12px}
.lab-hero-caption{padding:20px 24px 24px}
.lab-journal{font-size:12px;font-weight:600;color:var(--lab-purple);margin:0 0 10px;line-height:1.5}
.lab-hero-caption h2{font-family:var(--lab-serif);font-size:21px;line-height:1.35;margin:0;font-weight:400;color:var(--lab-purple)}
.lab-hero-caption h2 a{text-decoration:none}
.lab-hero-caption h2 a:hover{color:var(--lab-green)}
.lab-campus{margin:0}
.lab-campus img{height:420px;width:100%;object-fit:cover}
.lab-campus figcaption{font-size:12px;margin-top:12px;color:var(--lab-muted)}
.lab-section{padding:84px 0}
.lab-section-heading{display:flex;align-items:flex-end;justify-content:space-between;gap:36px;margin-bottom:40px}
.lab-section-heading .lab-eyebrow{margin-bottom:14px}
.lab-section h2,.lab-join h2{font-family:var(--lab-serif);font-size:clamp(28px,3vw,40px);line-height:1.3;font-weight:400;letter-spacing:-.025em;margin:0}
.lab-section-heading>p{max-width:300px;font-size:14px;line-height:1.8;color:var(--lab-muted);margin:0}
.lab-research-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:30px}
.lab-research-card{background:var(--lab-tint);border:1px solid var(--lab-line);border-top:3px solid var(--lab-green)}
.lab-research-card:nth-child(even){background:var(--lab-purple-tint);border-color:var(--lab-purple-line);border-top-color:var(--lab-purple)}
.lab-research-card:nth-child(even) h3,.lab-research-card:nth-child(even) .lab-text-link{color:var(--lab-purple)}
.lab-research-image{position:relative;overflow:hidden}
.lab-research-image img{display:block;width:100%;height:240px;object-fit:cover}
.lab-research-image>span{position:absolute;bottom:0;left:0;background:var(--lab-paper);padding:10px 18px;font:italic 22px var(--lab-serif)}
.lab-research-copy{padding:28px}
.lab-research-copy h3{font-family:var(--lab-serif);font-weight:400;font-size:29px;margin:0 0 16px;color:var(--lab-green)}
.lab-research-copy p{color:var(--lab-muted);font-size:14px;line-height:1.85;margin:0 0 16px}
.lab-methods{margin-top:36px;border-top:1px solid var(--lab-line);padding-top:24px;display:flex;gap:36px;align-items:baseline}
.lab-methods .lab-eyebrow{margin:0;white-space:nowrap}
.lab-methods ul{display:flex;gap:12px 28px;flex-wrap:wrap;list-style:none;margin:0;padding:0;color:var(--lab-muted);font-size:13px}
.lab-tinted{background:var(--lab-tint)}
.lab-publication{display:grid;grid-template-columns:170px minmax(0,1fr) 155px;gap:32px;padding:30px 0;border-top:1px solid var(--lab-line)}
.lab-publication-meta time{font-size:12px;color:var(--lab-muted);display:block;margin-bottom:14px;font-variant-numeric:tabular-nums}
.lab-publication h3{font-family:var(--lab-serif);font-weight:400;font-size:24px;line-height:1.4;margin:0 0 10px}
.lab-publication h3 a{text-decoration:none}
.lab-publication h3 a:hover{text-decoration:underline;text-decoration-thickness:1px;text-underline-offset:4px}
.lab-authors{font-size:12px;line-height:1.7;color:var(--lab-muted);margin:0 0 10px}
.lab-summary{font-size:13px;color:var(--lab-muted);line-height:1.8;margin:0 0 12px}
.lab-publication-image{align-self:start;background:white;border:1px solid var(--lab-line)}
.lab-publication-image img{display:block;width:100%;height:138px;object-fit:contain;padding:8px}
.lab-publication-links{display:flex;gap:10px 22px;flex-wrap:wrap;align-items:baseline;font-size:12px;margin-top:14px}
.lab-publication-links a{color:var(--lab-purple);font-weight:600}
.lab-doi{color:var(--lab-muted);overflow-wrap:anywhere}
.lab-tag{display:inline-block;font-size:10px;padding:3px 7px;border:1px solid var(--lab-purple-line);color:var(--lab-purple);background:var(--lab-purple-tint)}
.lab-selected{border-top:1px solid var(--lab-line);margin-top:10px}
.lab-selected summary{display:flex;justify-content:space-between;cursor:pointer;font-size:14px;padding:24px 0}
.lab-selected[open] summary span{transform:rotate(45deg)}
.lab-selected a{display:block;padding:18px 0;border-top:1px solid var(--lab-line);text-decoration:none;font-family:var(--lab-serif);font-size:20px}
.lab-selected a span{display:block;font:11px/1.6 sans-serif;color:var(--lab-muted);margin-bottom:8px}
.lab-about-grid{display:grid;grid-template-columns:1fr 1.3fr;gap:80px}
.lab-prose{font-size:15px;line-height:1.95;color:var(--lab-muted)}
.lab-prose p{margin:0 0 18px}
.lab-team-section{border-top:1px solid var(--lab-line)}
.lab-team-intro{display:grid;grid-template-columns:1.2fr 1fr;gap:40px;align-items:start}
.lab-team-photo{width:100%;aspect-ratio:3/2;max-height:420px;object-fit:contain;background:var(--lab-tint)}
.lab-pi .lab-eyebrow{margin-bottom:18px}
.lab-person-title{display:flex;gap:18px;align-items:center;margin-bottom:16px}
.lab-person-title img{width:68px;height:80px;object-fit:cover}
.lab-person-title h3{font-family:var(--lab-serif);font-size:30px;font-weight:400;margin:0}
.lab-pi>p:not(.lab-eyebrow){font-size:14px;line-height:1.85;color:var(--lab-muted)}
.lab-people-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:0 26px;margin-top:40px}
.lab-person{display:flex;gap:14px;align-items:center;border-top:1px solid var(--lab-line);padding:22px 0}
.lab-person img,.lab-avatar{height:50px;width:50px;object-fit:cover;flex-shrink:0}
.lab-avatar{display:grid;place-items:center;background:var(--lab-tint);color:var(--lab-green);font-family:var(--lab-serif);font-size:25px}
.lab-person h3{font-size:14px;font-weight:600;margin:0 0 5px}
.lab-person p{font-size:11px;color:var(--lab-muted);margin:0}
.lab-join{background:var(--lab-green);color:var(--lab-on-dark);padding:60px 0}
.lab-join>.lab-wrap{display:flex;align-items:center;justify-content:space-between;gap:50px}
.lab-join .lab-eyebrow{color:var(--lab-on-dark-muted);margin-bottom:16px}
.lab-join p:not(.lab-eyebrow){max-width:720px;font-size:14px;line-height:1.8;color:var(--lab-on-dark-muted);margin:20px 0 0}
.lab-button-light{background:var(--lab-paper);border-color:var(--lab-paper);color:var(--lab-ink);white-space:nowrap}
.lab-button-light:hover{background:var(--lab-purple-tint);border-color:var(--lab-purple-tint);color:var(--lab-purple)}
.lab-footer{background:var(--lab-green);color:var(--lab-on-dark);border-top:1px solid var(--lab-dark-line)}
.lab-footer-top{display:flex;justify-content:space-between;gap:40px;padding-top:50px;padding-bottom:36px}
.lab-footer-brand{font-family:var(--lab-serif);font-size:32px;text-decoration:none}
.lab-footer-brand span{color:var(--lab-on-dark)}
.lab-footer-top p{color:var(--lab-on-dark-muted);font-size:12px;line-height:1.8;margin-top:14px}
.lab-footer-links{display:flex;flex-direction:column;gap:16px;font-size:13px;align-self:center}
.lab-footer-links a{text-decoration:none}
.lab-footer-bottom{display:flex;justify-content:space-between;gap:20px;border-top:1px solid var(--lab-dark-line);padding-top:20px;padding-bottom:25px;color:var(--lab-on-dark-muted);font-size:11px}
.lab-footer a:hover{text-decoration:underline;text-underline-offset:4px}
.lab-footer :focus-visible,.lab-join :focus-visible{outline-color:var(--lab-on-dark)}
.lab-section h2,.lab-page-head h1,.lab-publication-year h2{color:var(--lab-green)}
.lab-page-head{padding:60px 0 46px;border-bottom:1px solid var(--lab-line)}
.lab-page-head h1{font-family:var(--lab-serif);font-size:clamp(40px,5vw,62px);font-weight:400;line-height:1.1;margin:0 0 20px}
.lab-page-head p:not(.lab-eyebrow){font-size:16px;line-height:1.8;color:var(--lab-muted);max-width:680px}
.lab-year-nav{display:flex;gap:12px;flex-wrap:wrap;margin-top:24px}
.lab-year-nav a{border:1px solid var(--lab-line);padding:8px 16px;text-decoration:none;font-size:13px}
.lab-year-nav a:hover{background:var(--lab-tint)}
.lab-publication-year{padding:36px 0}
.lab-publication-year h2{font:32px var(--lab-serif);margin:0 0 20px}
.lab-abstract summary{font-size:12px;color:var(--lab-purple);cursor:pointer;width:fit-content;padding:6px 0}
.lab-abstract .lab-prose{font-size:14px;margin-top:12px}
.lab-contact-grid{display:grid;grid-template-columns:1fr 1fr;gap:90px}
.lab-contact-detail{border-top:1px solid var(--lab-line);padding:22px 0}
.lab-contact-detail h3{font-size:11px;letter-spacing:.12em;text-transform:uppercase;margin:0 0 12px;color:var(--lab-purple)}
.lab-contact-detail p,.lab-contact-detail a{font-size:15px;line-height:1.8;overflow-wrap:anywhere}
.lab-contact-detail a{color:var(--lab-green)}
.lab-form{background:white;border:1px solid var(--lab-line);padding:34px}
.lab-form h2{font-size:29px;margin-bottom:12px}
.lab-form>p{font-size:13px;line-height:1.8;color:var(--lab-muted);margin-bottom:24px}
.lab-field{margin:20px 0}
.lab-field label{display:block;font-size:13px;margin-bottom:8px}
.lab-field input,.lab-field textarea{display:block;width:100%;border:1px solid var(--lab-line);background:var(--lab-paper);padding:12px;font:inherit;font-size:14px;border-radius:0;color:var(--lab-ink)}
.lab-field textarea{resize:vertical;min-height:150px}
.lab-form .errorlist{list-style:none;color:#993f32;font-size:12px;margin:6px 0;padding:0}
.lab-honeypot{position:absolute;left:-9999px}
.lab-empty{padding:24px 0;color:var(--lab-muted)}
@media(min-width:1450px){.lab-hero{padding:80px 0}}
@media(max-width:1100px){.lab-wrap{width:calc(100% - 56px)}.lab-navigation{gap:15px}.lab-brand small{font-size:8px}.lab-hero-grid{gap:35px}.lab-hero h1{font-size:48px}.lab-people-grid{grid-template-columns:repeat(3,minmax(0,1fr))}.lab-publication{grid-template-columns:135px minmax(0,1fr) 125px;gap:24px}.lab-contact-grid{gap:40px}}
@media(max-width:900px){.lab-nav-row{flex-wrap:wrap;gap:0;min-height:80px;padding-block:16px}.lab-navigation{width:100%;flex-wrap:wrap;padding-top:20px}.lab-js .lab-navigation{display:none}.lab-js .lab-navigation.is-open{display:flex}.lab-menu-button:not([hidden]){display:block}.lab-hero-grid{grid-template-columns:1fr 1fr;gap:28px}.lab-hero h1{font-size:39px}.lab-hero-figure img{height:240px}.lab-hero-caption h2{font-size:19px}.lab-section-heading{align-items:start}.lab-section-heading>p{max-width:240px}.lab-about-grid{gap:40px}.lab-team-intro{gap:28px}.lab-people-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.lab-publication{grid-template-columns:120px minmax(0,1fr)}.lab-publication-image{display:none}}
@media(max-width:640px){html{scroll-padding-top:100px}.lab-wrap{width:calc(100% - 40px)}.lab-brand>span{font-size:25px}.lab-brand img{width:36px;height:36px}.lab-brand small{font-size:8px}.lab-navigation{gap:4px 22px}.lab-language{border:0;padding:0}.lab-hero{padding:38px 0 42px}.lab-hero-grid{grid-template-columns:1fr;gap:36px}.lab-hero h1{font-size:43px}.lab-lead{font-size:15px}.lab-affiliation{margin-top:26px}.lab-hero-figure img{height:255px}.lab-hero-caption h2{font-size:21px}.lab-section{padding:50px 0}.lab-section-heading{display:block;margin-bottom:28px}.lab-section-heading>p{max-width:none;margin-top:16px}.lab-section-heading>.lab-text-link{margin-top:15px}.lab-research-grid{grid-template-columns:1fr;gap:24px}.lab-research-image img{height:220px}.lab-research-copy{padding:23px}.lab-research-copy h3{font-size:26px}.lab-methods{display:block}.lab-methods ul{margin-top:15px;gap:12px 22px}.lab-publication{grid-template-columns:1fr;gap:14px;padding:24px 0}.lab-publication-meta{display:flex;align-items:baseline;gap:10px;flex-wrap:wrap}.lab-publication-meta time,.lab-publication-meta p{margin:0}.lab-publication h3{font-size:22px}.lab-about-grid,.lab-team-intro,.lab-contact-grid{grid-template-columns:1fr;gap:28px}.lab-people-grid{column-gap:18px}.lab-person{gap:9px}.lab-person img,.lab-avatar{width:40px;height:44px}.lab-person h3{font-size:12px}.lab-join>.lab-wrap{display:block}.lab-join .lab-button{margin-top:26px}.lab-footer-top{display:block;padding-top:36px}.lab-footer-links{margin-top:24px}.lab-page-head{padding:38px 0}.lab-form{padding:24px}.lab-section h2,.lab-join h2{font-size:30px}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}}