:root{
  --ink:#171A1F;
  --graphite:#2D3748;
  --muted:#667085;
  --line:#E6E8EC;
  --soft:#F6F7F9;
  --white:#FFFFFF;
  --max:1280px;
  --std:1120px;
  --read:820px;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;color:var(--ink);background:#fff;font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei","Helvetica Neue",Arial,sans-serif;line-height:1.7;-webkit-font-smoothing:antialiased}
a{color:inherit;text-decoration:none}
img{max-width:100%;display:block}
button{font:inherit}
.container{width:min(calc(100% - 48px),var(--max));margin:0 auto}.container.std{max-width:var(--std)}.container.read{max-width:var(--read)}
.site-header{position:sticky;top:0;z-index:50;background:rgba(255,255,255,.94);backdrop-filter:blur(12px);border-bottom:1px solid var(--line)}
.nav{height:72px;display:flex;align-items:center;justify-content:space-between;gap:24px}
.brand{display:flex;flex-direction:column;line-height:1}.brand strong{font-size:24px;letter-spacing:-.03em}.brand span{font-size:10px;color:var(--muted);margin-top:5px;letter-spacing:.02em}
.nav-links{display:flex;gap:26px;align-items:center;font-size:14px;color:#343A46}.nav-links a{padding:24px 0 22px;border-bottom:2px solid transparent}.nav-links a:hover,.nav-links a.active{border-color:var(--graphite)}
.menu-btn{display:none;border:0;background:none;font-size:24px;padding:8px;cursor:pointer}
.mobile-menu{display:none;padding:10px 24px 28px;border-top:1px solid var(--line)}.mobile-menu.open{display:block}.mobile-menu a{display:block;padding:14px 0;border-bottom:1px solid var(--line)}
.hero{min-height:78vh;display:flex;align-items:center;padding:80px 0 72px;overflow:hidden}
.hero-grid{display:grid;grid-template-columns:1.2fr .8fr;align-items:center;gap:72px}
.eyebrow{}
.hero h1{margin:16px 0 24px;max-width:760px}
.hero-sub{font-size:20px;margin:0 0 4px}.hero-en{font-size:15px;color:var(--muted);margin:0 0 32px}
.actions{display:flex;gap:14px;flex-wrap:wrap}.btn{display:inline-flex;align-items:center;gap:9px;padding:12px 18px;border-radius:5px;border:1px solid var(--graphite);font-size:14px;font-weight:600;transition:.2s ease}.btn.primary{background:var(--graphite);color:#fff}.btn:hover{transform:translateY(-1px)}.btn.primary:hover{background:#232C3B}.btn.textual{border:0;padding-left:4px;padding-right:4px;background:transparent}
.hero-art{height:420px;position:relative}.hero-art svg{width:100%;height:100%}
.section{padding:124px 0}.section.soft{background:var(--soft)}
.section-head{margin-bottom:54px}.section-head h2{margin:10px 0 0}.section-head p{max-width:760px;color:var(--muted);font-size:17px}
.challenge-grid{display:grid;grid-template-columns:1fr 1fr;border-top:1px solid var(--line);border-left:1px solid var(--line)}.challenge{padding:34px 38px 40px;border-right:1px solid var(--line);border-bottom:1px solid var(--line)}.num{font-size:14px;color:var(--muted);margin-bottom:46px}.challenge h3,.research h3,.impact h3{margin:0}.challenge p,.research p,.impact p{color:var(--muted);margin:14px 0 0}.challenge-keywords{display:none}
.research-grid{display:grid;grid-template-columns:repeat(3,1fr);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}.research{padding:34px 34px 38px}.research+.research{border-left:1px solid var(--line)}.research-code{font-size:18px;font-weight:650;margin-bottom:34px}.research-index{display:none}.text-link{display:inline-block;margin-top:24px;font-size:14px;font-weight:600}.text-link:hover{text-decoration:underline}
.numbers{display:grid;grid-template-columns:repeat(4,1fr)}.metric{padding:8px 28px}.metric+.metric{border-left:1px solid var(--line)}.metric strong{font-size:clamp(42px,5vw,62px);line-height:1;letter-spacing:-.05em;font-weight:620}.metric span{display:block;color:var(--muted);margin-top:12px;font-size:var(--text-support-size)}.metric small{display:block;color:#8A93A2;margin-top:4px}
.partner-grid{display:grid;grid-template-columns:repeat(4,1fr)}.partner{padding-right:28px}.partner+.partner{padding-left:28px;border-left:1px solid var(--line)}.partner h3{margin:0 0 22px}.partner p{font-size:18px;line-height:1.9;margin:0;color:#313846}.partner-inline{display:none}
.highlights{display:grid;grid-template-columns:repeat(2,1fr);border-top:1px solid var(--line)}.highlight{display:grid;grid-template-columns:54px 1fr;gap:18px;padding:30px 24px 32px 0;border-bottom:1px solid var(--line)}.highlight:nth-child(odd){padding-right:42px}.highlight:nth-child(even){padding-left:42px;border-left:1px solid var(--line)}.highlight h3{margin:0}.highlight p{color:var(--muted);margin:10px 0 0}
.impact-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:0;border-top:1px solid var(--line);border-left:1px solid var(--line)}.impact{padding:36px;border-right:1px solid var(--line);border-bottom:1px solid var(--line)}.impact .tag{font-size:11px;color:var(--muted);letter-spacing:.11em;margin-top:24px}.fact{margin-top:18px;padding-top:16px;border-top:1px solid var(--line);font-size:var(--text-support-size);color:#394150}
.news-list{border-top:1px solid var(--line)}.news-row{display:grid;grid-template-columns:110px 74px 1fr 22px;align-items:start;gap:18px;padding:24px 0;border-bottom:1px solid var(--line)}.news-row time,.news-row .label{font-size:var(--text-meta-size);color:var(--muted)}.news-row h3{margin:0}.news-row p{color:var(--muted);margin:6px 0 0;font-size:15px}
.join{text-align:center;padding:136px 0}.join h2{margin:12px auto 20px;max-width:760px}.join p{color:var(--muted);font-size:17px;margin:0 0 30px}
.site-footer{background:#1D222B;color:rgba(255,255,255,.82);padding:56px 0 22px}.footer-grid{display:grid;grid-template-columns:1.2fr 1fr 1.3fr;gap:56px}.site-footer .brand span,.site-footer .muted{color:rgba(255,255,255,.52)}.footer-links{display:grid;grid-template-columns:1fr 1fr;gap:10px 22px;font-size:14px}.footer-meta{margin-top:38px;padding-top:18px;border-top:1px solid rgba(255,255,255,.12);font-size:12px;color:rgba(255,255,255,.48);display:flex;gap:20px;flex-wrap:wrap}
.page-hero{padding:108px 0 74px;border-bottom:1px solid var(--line)}.page-hero h1{margin:10px 0 18px}.page-hero p{font-size:18px;color:var(--muted);max-width:760px}.content-section{padding:92px 0}.prose h2{margin:0 0 22px}.prose p{font-size:17px;color:#303642}.team-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:42px 28px}.person-photo{aspect-ratio:4/5;background:linear-gradient(145deg,#F0F2F5,#E1E5EA);border:1px solid var(--line);display:flex;align-items:center;justify-content:center;color:#9AA1AC;font-size:13px}.person h3{margin:16px 0 4px}.person .role{font-size:var(--text-support-size);color:var(--muted)}.person p{font-size:15px;color:var(--muted)}
.pub-year{font-size:30px;margin:0 0 18px}.pub{padding:22px 0;border-top:1px solid var(--line)}.pub h3{margin:0 0 7px}.pub p{margin:0;color:var(--muted);font-size:var(--text-support-size)}.pub-actions{margin-top:10px;display:flex;gap:16px;font-size:var(--text-meta-size);font-weight:600}
.contact-grid{display:grid;grid-template-columns:1fr 1fr;gap:80px}.contact-card{padding:28px 0;border-top:1px solid var(--line)}.contact-card h3{margin:0 0 10px}.map-placeholder{height:340px;background:var(--soft);border:1px solid var(--line);display:flex;align-items:center;justify-content:center;color:var(--muted);margin-top:36px}
@media(max-width:1024px){.nav-links{gap:16px;font-size:13px}.hero-grid{gap:36px}.partner-grid{grid-template-columns:1fr 1fr;row-gap:40px}.partner:nth-child(3){border-left:0;padding-left:0}.partner:nth-child(3),.partner:nth-child(4){padding-top:28px;border-top:1px solid var(--line)}.numbers{grid-template-columns:1fr 1fr;gap:30px 0}.metric:nth-child(3){border-left:0}.metric:nth-child(3),.metric:nth-child(4){padding-top:28px;border-top:1px solid var(--line)}}
@media(max-width:768px){
  /* Mobile chrome is a permanent overlay, fully detached from page swaps and scroll restoration. */
  body{padding-top:62px}
  .site-header{position:fixed;top:0;left:0;right:0;width:100%;background:#fff;backdrop-filter:none;-webkit-backdrop-filter:none;isolation:isolate;z-index:1000;transform:translateZ(0);-webkit-transform:translateZ(0);backface-visibility:hidden;-webkit-backface-visibility:hidden}
  .container{width:min(calc(100% - 36px),var(--max))}
  .nav{height:62px}.nav-links{display:none}.menu-btn{display:block}.brand strong{font-size:22px}
  .site-header .mobile-menu{position:absolute;top:100%;left:0;right:0;background:#fff;max-height:calc(100svh - 62px);overflow:auto;overscroll-behavior:contain;-webkit-overflow-scrolling:touch;box-shadow:0 12px 28px rgba(23,26,31,.08)}
  .hero{min-height:calc(100svh - 62px);padding:72px 0 54px;position:relative}.hero-grid{grid-template-columns:1fr;text-align:left;position:relative}.hero h1{margin:18px 0 22px;max-width:8.8em}.hero-sub{font-size:16px}.hero-en{font-size:12px;margin-bottom:30px}.actions{justify-content:flex-start;align-items:center}.actions .btn.primary{width:auto;min-width:148px}.actions .btn.textual{width:auto}.hero-art{position:absolute;right:-105px;bottom:-62px;width:390px;height:300px;opacity:.42;pointer-events:none}.hero-art svg{transform:scale(1.22)}
  .section{padding:82px 0}.section-head{margin-bottom:38px}.section-head h2{}.eyebrow{}
  .challenge-grid,.research-grid,.highlights,.impact-grid,.team-grid,.contact-grid{grid-template-columns:1fr}
  .challenge-grid{border:0}.challenge{padding:26px 0 28px;border:0;border-top:1px solid var(--line)}.challenge:first-child{border-top:1px solid var(--line)}.challenge .num{margin-bottom:16px}.challenge h3{}.challenge p{display:none}.challenge-keywords{display:block;margin-top:10px;font-size:13px;color:var(--muted);letter-spacing:.01em}
  .research-grid{display:block;border:0}.research{position:relative;padding:40px 0 44px;border-top:1px solid var(--line)}.research+.research{border-left:0}.research:last-child{border-bottom:1px solid var(--line)}.research-code{font-size:13px;color:var(--muted);margin-bottom:18px;letter-spacing:.08em}.research-index{display:inline;margin-right:10px;color:var(--graphite);font-size:13px}.research h3{max-width:13em}.research p{font-size:15px;max-width:28em}.research .text-link{margin-top:18px}
  .numbers{grid-template-columns:1fr 1fr;gap:0}.metric{padding:26px 12px}.metric:nth-child(odd){padding-left:0}.metric:nth-child(even){padding-right:0}.metric+.metric{border-left:0}.metric:nth-child(2n){border-left:1px solid var(--line)}.metric:nth-child(n+3){border-top:1px solid var(--line)}.metric strong{font-size:48px}.metric span{font-size:13px;margin-top:10px}.metric small{font-size:10px;line-height:1.4}
  .partner-grid{display:block}.partner,.partner+.partner,.partner:nth-child(3){padding:22px 0;border-left:0;border-top:1px solid var(--line)}.partner:first-child{border-top:1px solid var(--line)}.partner h3{margin-bottom:8px}.partner p{display:none}.partner-inline{display:block;font-size:16px;line-height:1.65;color:var(--ink)}
  .highlights{border-top:0}.highlight,.highlight:nth-child(odd),.highlight:nth-child(even){grid-template-columns:42px 1fr;gap:10px;padding:25px 0;border-left:0;border-top:1px solid var(--line)}.highlight .num{margin:2px 0 0}.highlight h3{}.highlight p{font-size:14px;line-height:1.6;margin-top:7px}
  .impact-grid{border:0}.impact{padding:34px 0 38px;border:0;border-top:1px solid var(--line)}.impact:last-child{border-bottom:1px solid var(--line)}.impact .num{font-size:12px;margin-bottom:18px}.impact .tag{order:-1;margin:0 0 12px;font-size:10px}.impact h3{}.impact p{font-size:15px}.fact{font-size:13px;margin-top:16px;padding-top:14px}
  .news-row{grid-template-columns:74px 48px 1fr;gap:10px;padding:20px 0}.news-row>span:last-child{display:none}.news-row p{display:none}.news-row h3{}.news-row time,.news-row .label{font-size:11px}
  .join{padding:104px 0}.join h2{max-width:9em;margin-top:14px}.join p{display:none}.join .btn{margin-top:20px}
  .footer-grid{grid-template-columns:1fr;gap:26px}.site-footer{padding:42px 0 18px}.footer-grid>div:nth-child(3){font-size:13px}.footer-links{grid-template-columns:repeat(3,auto);justify-content:start;gap:8px 18px}.footer-meta{margin-top:26px;gap:8px 16px}.footer-meta span:nth-child(2),.footer-meta span:nth-child(3){display:none}
  .page-hero{padding:82px 0 54px}.content-section{padding:68px 0}.team-grid{grid-template-columns:1fr 1fr}.contact-grid{gap:30px}
}
@media(max-width:480px){.hero h1{}.team-grid{grid-template-columns:1fr}.news-row{grid-template-columns:70px 1fr}.news-row .label{display:none}.btn{width:auto;justify-content:center}.actions{width:100%}}
@media (prefers-reduced-motion: reduce){*{scroll-behavior:auto!important;transition:none!important;animation:none!important}}
@media print{.site-header,.site-footer,.btn,.menu-btn{display:none!important}.page-hero,.content-section{padding:24px 0}body{color:#000}.container{width:100%;max-width:none}}