:root{color-scheme:dark;--bg:#0a101b;--text:#f1f4f8;--muted:#a4afc0;--mint:#7ae5bb;--line:#273140;--ink:#172534}*{box-sizing:border-box}html{scroll-behavior:smooth;scroll-padding-top:90px}body{margin:0;background:var(--bg);color:var(--text);font-family:Inter,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;font-size:16px;line-height:1.65}a{color:inherit;text-decoration:none}a:hover{color:var(--mint)}a:focus-visible,button:focus-visible,video:focus-visible{outline:3px solid #3c9ef7;outline-offset:5px}.wrap{width:min(1160px,calc(100% - 64px));margin-inline:auto}.nav{border-bottom:1px solid var(--line);background:var(--bg)}.nav-inner{min-height:82px;display:flex;align-items:center;justify-content:space-between;gap:28px}.brand{font-size:16px;font-weight:650;white-space:nowrap}.prompt{font-family:ui-monospace,SFMono-Regular,Consolas,monospace;color:var(--mint);font-weight:600;margin-right:9px}.nav nav{display:flex;gap:30px;color:var(--muted);font-size:14px}.external{display:none}.hero{padding-top:72px;padding-bottom:48px;text-align:center}.eyebrow{font-family:ui-monospace,SFMono-Regular,Consolas,monospace;font-size:12px;letter-spacing:.12em;font-weight:600;color:var(--mint);margin:0 0 22px}.eyebrow span{color:#526272;margin-inline:15px}h1,h2,h3,p{margin-top:0}h1{font-size:clamp(42px,6.2vw,78px);letter-spacing:-.06em;line-height:1.1;font-weight:720;margin-bottom:23px}h1>span:first-child{color:var(--mint)}.cursor{color:var(--mint);font-weight:400}h2{font-size:clamp(28px,3.1vw,42px);letter-spacing:-.035em;line-height:1.2;font-weight:600;margin-bottom:24px}.hero h2{font-size:clamp(25px,3vw,37px);font-weight:450;letter-spacing:-.025em;line-height:1.3}.hero-description{color:var(--muted);font-size:18px;line-height:1.6;margin:26px 0}.actions{display:flex;justify-content:center;align-items:center;gap:12px;flex-wrap:wrap;margin:30px 0 34px}.button{display:inline-flex;align-items:center;justify-content:center;gap:8px;min-height:46px;padding:10px 20px;border:1px solid #435063;border-radius:6px;color:var(--text);font:600 14px/1.5 inherit;font-family:inherit;font-size:14px;cursor:pointer;background:transparent}.button:hover{background:#1a2637;color:#fff;border-color:#8394ab}.button.primary{background:var(--mint);border-color:var(--mint);color:#0b2a20}.button.primary:hover{background:#a1f3d3}.text-link{font-size:14px;padding:10px 14px;text-decoration:underline;text-underline-offset:5px}.authors{max-width:900px;margin:auto;font-size:14px;line-height:2;color:#bdc7d5}.authors a{color:inherit;text-decoration:none}sup{font-size:.7em;margin-left:2px}.affiliations{display:flex;justify-content:center;gap:26px;font-size:14px;margin:14px 0 4px}.author-notes{font-size:12px;color:var(--muted);margin:0}.video-section{scroll-margin-top:24px}.window-bar{display:flex;justify-content:space-between;align-items:center;gap:12px;border:1px solid var(--line);border-bottom:0;border-radius:10px 10px 0 0;background:#121b29;padding:14px 20px;font-family:ui-monospace,SFMono-Regular,Consolas,monospace;font-size:12px;color:var(--muted)}.window-label{font-size:14px;color:#dae1eb}.video-section video{display:block;width:100%;aspect-ratio:16/9;background:#050913;border:1px solid var(--line);object-fit:contain}.video-caption{display:flex;justify-content:space-between;gap:16px;color:var(--muted);font-size:12px;margin-top:12px}.video-caption a{text-decoration:underline;text-underline-offset:4px;white-space:nowrap}.stats{display:grid;grid-template-columns:repeat(4,1fr);padding:50px 0 64px}.stats>div{padding:0 28px;border-left:1px solid var(--line)}.stats>div:first-child{padding-left:0;border-left:0}.stats strong{font-size:44px;line-height:1.2;font-weight:600;letter-spacing:-.04em}.stats strong span{font-size:21px;margin-left:4px;color:var(--mint)}.stats p{color:var(--muted);font-size:14px;margin:12px 0 0}.light-surface{background:#f5f7fa;color:var(--ink);color-scheme:light}.section{padding-block:84px}.light-surface .section+.section{border-top:1px solid #d8dfe6}.light-surface .eyebrow{color:#32775f}.intro{display:grid;grid-template-columns:1fr 1.2fr;gap:85px}.intro-copy{color:#4a5867;font-size:17px}.intro-copy p:last-of-type{margin-bottom:18px}.inline-link{font-size:14px;font-weight:600;text-decoration:underline;text-underline-offset:5px;color:#146249}.section-heading{display:flex;align-items:flex-end;justify-content:space-between;gap:35px;margin-bottom:36px}.section-heading h2{margin:0}.section-heading>p{color:#62707e;font-size:14px;margin:0}.citation{padding-bottom:50px}.citation pre{white-space:pre-wrap;overflow-wrap:anywhere;background:#101a28;border:1px solid var(--line);border-radius:8px;padding:28px;color:#b9c7d9;font-size:13px;line-height:1.9}.citation code{font-family:ui-monospace,SFMono-Regular,Consolas,monospace}#copy-status{min-height:24px;font-size:14px;color:var(--mint);margin-bottom:0}footer{border-top:1px solid var(--line);padding-block:28px;display:flex;align-items:center;justify-content:space-between;gap:25px}footer p,footer>a:last-child{font-size:12px;color:var(--muted);margin:0}.skip{position:absolute;top:-80px;left:10px;background:white;color:#172534;z-index:5;padding:12px}.skip:focus{top:10px}.light-surface a:hover{color:#237552}
@media(max-width:850px){.wrap{width:calc(100% - 40px)}.hero{padding-top:50px}.nav nav{gap:20px}.intro{gap:35px;grid-template-columns:1fr 1fr}.stats>div{padding-inline:16px}.stats strong{font-size:35px}.section-heading{align-items:flex-start}.section-heading>p br{display:none}.section{padding-block:60px}.window-bar>span:last-child{display:none}footer{flex-wrap:wrap}}
@media(max-width:560px){.nav-inner{min-height:72px;gap:12px;flex-wrap:wrap;justify-content:center;padding-block:15px}.nav nav{gap:24px}.hero{padding-top:40px}.eyebrow{font-size:10px;letter-spacing:.075em}.eyebrow span{margin-inline:5px}h1{font-size:clamp(31px,8.6vw,48px);letter-spacing:-.055em}.hero h2{font-size:25px}.hero-description{font-size:16px}.desktop-break{display:none}.affiliations{flex-direction:column;gap:2px}.actions{gap:9px}.authors{font-size:13px}.video-caption{display:block}.video-caption a{display:block;margin-top:5px}.stats{grid-template-columns:repeat(2,1fr);gap:30px 0;padding-block:32px 42px}.stats>div{padding-left:20px}.stats>div:nth-child(3){border:0;padding-left:0}.stats strong{font-size:36px}.stats p{font-size:12px}.stats strong span{font-size:17px}.intro{grid-template-columns:1fr;gap:15px}.intro h2 br{display:none}.section-heading{flex-direction:column;gap:20px}.section-heading h2{font-size:32px}.citation pre{padding:18px;font-size:12px}footer{flex-direction:column;align-items:flex-start;gap:10px}.window-bar{padding:12px}.window-label{font-size:12px}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}}

.affiliations{align-items:center;flex-wrap:wrap;gap:20px 36px;margin:24px 0 12px}.affiliation{display:inline-flex;align-items:center;gap:12px}.affiliation-logo{display:block;object-fit:contain;flex-shrink:0}.qwen-logo{width:40px;height:40px}.tsinghua-logo{width:127px;height:40px}@media(max-width:560px){.affiliations{gap:18px}.affiliation{flex-wrap:wrap;justify-content:center}}

.resource-icons{gap:24px;margin:28px 0 30px}.resource-icon{display:inline-flex;align-items:center;justify-content:center;width:58px;height:58px;border-radius:12px;color:#e8eef7;transition:background .15s ease,transform .15s ease}.resource-icon:hover{background:#1a2637;color:#fff;transform:translateY(-2px)}.resource-icon img,.resource-icon svg{display:block}.video-icon{color:var(--mint)}@media(prefers-reduced-motion:reduce){.resource-icon{transition:none}.resource-icon:hover{transform:none}}

/* Full-width research cover */
.nav{position:absolute;inset:0 0 auto;z-index:3;background:transparent;border:0}
.nav-inner{min-height:72px}.nav .brand{font-weight:550}.nav nav{color:#c6d0dc}
.hero{position:relative;isolation:isolate;display:flex;align-items:center;min-height: min(960px,100svh);padding:112px 0 70px;overflow:hidden;text-align:center;background:#080e18}
.hero-backdrop{position:absolute;inset:0;z-index:-2;pointer-events:none;background:#080e18}
.hero-backdrop video{width:100%;height:100%;object-fit:cover;opacity:.48;filter:saturate(.7)}
.hero::after{content:"";position:absolute;inset:0;z-index:-1;background:linear-gradient(180deg,rgba(5,10,19,.64),rgba(5,10,19,.61) 50%,#0a101b 100%),radial-gradient(ellipse at 50% 28%,rgba(46,102,127,.08),rgba(5,10,19,.35) 75%);pointer-events:none}
.hero-content{width:min(1360px,calc(100% - 80px))}
.hero h1{font-size:clamp(62px,8.1vw,118px);line-height:1.04;letter-spacing:-.055em;font-weight:750;margin:0 auto 30px;text-shadow:0 4px 32px rgba(0,0,0,.28);color:#fff}
.hero h1>span{color:#9eedd0}
.hero h2{max-width:1140px;margin:0 auto 40px;font-size:clamp(29px,3.4vw,48px);line-height:1.25;letter-spacing:-.025em;font-weight:480;color:#eef2f7;text-wrap:balance}
.hero .authors{display:flex;flex-wrap:wrap;justify-content:center;gap:7px 20px;max-width:1130px;font-size:18px;line-height:1.7;color:#d1d9e4}
.author{white-space:nowrap}.hero .authors sup{font-size:.65em;color:#c0cbd8;margin-left:3px}
.hero .affiliations{gap:24px 50px;font-size:16px;margin:34px auto 14px;color:#d7dee9}
.hero .affiliation{gap:15px}.hero .qwen-logo{width:46px;height:46px}.hero .tsinghua-logo{width:146px;height:46px}
.hero .author-notes{font-size:13px;color:#adb9ca;margin:0}
.hero .resource-icons{gap:22px;margin:30px 0 0}
.hero .resource-icon{width:62px;height:62px;border:1px solid rgba(180,207,221,.27);border-radius:50%;background:rgba(24,38,55,.25);backdrop-filter:blur(8px)}
.hero .resource-icon:hover{background:rgba(83,129,123,.24);border-color:#7ae5bb;transform:translateY(-3px)}
.hero .resource-icon svg,.hero .resource-icon img{width:30px;height:30px}


.video-section{margin-top:34px}
@media(min-width:1600px){.hero{min-height:940px}}
@media(max-width:900px){.hero{min-height:100svh;padding:115px 0 65px}.hero-content{width:calc(100% - 48px)}.hero h1{font-size:clamp(54px,8vw,75px)}.hero h2{font-size:32px;margin-bottom:32px}.hero .authors{font-size:16px;gap:6px 16px}.hero .affiliations{gap:24px 30px;font-size:14px}.hero .affiliation{gap:10px}}
@media(max-width:560px){.nav-inner{min-height:65px;justify-content:space-between;flex-wrap:nowrap;padding:0;gap:12px}.nav .brand{font-size:13px}.nav nav{gap:16px;font-size:12px}.nav .prompt{margin-right:5px}.hero{padding:110px 0 65px;min-height:100svh}.hero-content{width:calc(100% - 40px)}.hero h1{font-size:clamp(48px,12.8vw,70px);line-height:1.03;letter-spacing:-.05em;max-width:100%;margin-bottom:26px}.hero h2{font-size:26px;line-height:1.28;margin-bottom:30px}.hero .authors{font-size:14px;gap:7px 14px;line-height:1.6}.hero .affiliations{margin-top:28px;gap:18px;font-size:14px}.hero .affiliation{gap:12px}.hero .qwen-logo{width:38px;height:38px}.hero .tsinghua-logo{width:121px;height:38px}.hero .author-notes{font-size:12px}.hero .resource-icons{margin-top:28px;gap:22px}.hero .resource-icon{width:56px;height:56px}.video-section{margin-top:20px}.citation .eyebrow{font-size:12px}}
@media(prefers-reduced-motion:reduce){.hero .resource-icon:hover{transform:none}}

.hero .authors{flex-direction:column;align-items:center}.author-row{display:flex;flex-wrap:wrap;justify-content:center;gap:7px 20px;max-width:100%}@media(max-width:900px){.author-row{gap:6px 16px}}@media(max-width:560px){.author-row{gap:7px 14px}}