:root{--paper:#f5f5ed;--ink:#173b36;--muted:#5e7168;--line:#d8dfd4;--green:#c7db78;--dark:#153e35;--white:#fffef8}*{box-sizing:border-box}html{scroll-behavior:smooth;scroll-padding-top:90px}body{margin:0;background:var(--paper);color:var(--ink);font-family:"Segoe UI","Microsoft YaHei","PingFang SC",sans-serif;line-height:1.8;-webkit-font-smoothing:antialiased}a{color:inherit}button{font:inherit;cursor:pointer}a,button{-webkit-tap-highlight-color:transparent}a:focus-visible,button:focus-visible{outline:3px solid #bb6b31;outline-offset:5px}button:disabled{cursor:wait}.wrap{max-width:1240px;margin:auto;padding-left:48px;padding-right:48px}.header{max-width:1440px;margin:auto;padding:25px 48px;display:flex;justify-content:space-between;align-items:center;border-bottom:1px solid var(--line)}.brand{display:flex;align-items:center;gap:12px;font-size:21px;font-weight:750;text-decoration:none;letter-spacing:-.8px}.brand small{font-size:12px;font-weight:500;letter-spacing:1px;margin-left:12px}.mark{display:inline-flex;align-items:center;justify-content:center;background:var(--ink);color:var(--green);width:36px;height:36px;font-size:30px;border-radius:50%}.header nav{display:flex;gap:30px;font-size:13px}.header nav a{text-decoration:none}.header nav a:hover{color:#59812f}.hero{padding-top:76px;padding-bottom:76px;display:grid;grid-template-columns:1.07fr 1fr;gap:52px;align-items:center}.eyebrow{font-size:11px;letter-spacing:1.8px;font-weight:650;margin:0 0 23px}.dot{width:7px;height:7px;background:#688844;border-radius:50%;display:inline-block;margin-right:7px;vertical-align:1px}h1{font-size:clamp(40px,4.6vw,65px);line-height:1.25;letter-spacing:-2px;margin:0 0 23px;font-weight:750}.accent{color:#88a94b}.hero-lead{font-size:17px;color:var(--muted);margin:0 0 25px}.thesis{border-left:2px solid #adbf8b;padding-left:17px;font-size:11px;line-height:1.9;color:var(--muted);margin:0 0 30px}.thesis strong{color:var(--ink);font-size:16px;font-weight:550}.actions{display:flex;flex-wrap:wrap;gap:12px}.button{border:1px solid var(--ink);border-radius:3px;padding:12px 19px;display:inline-flex;align-items:center;justify-content:center;gap:24px;font-size:12px;text-decoration:none;line-height:1.5;transition:background .15s}.primary{color:var(--white);background:var(--ink)}.primary:hover{background:#28594b}.secondary{color:var(--ink);background:transparent}.secondary:hover{background:#e5ead9}.fine{font-size:11px;color:var(--muted);margin:18px 0 0}.hero-visual{border:1px solid #cbd5c5;background:#edf0e4;border-radius:7px;overflow:hidden;transform:rotate(-1deg)}.hero-visual svg{display:block;width:100%;height:auto}.visual-top,.visual-bottom{padding:17px 22px;display:flex;justify-content:space-between;font-size:10px;letter-spacing:1px}.visual-top{border-bottom:1px solid #cbd5c5}.visual-bottom{border-top:1px solid #cbd5c5}.visual-bottom i{display:inline-block;height:5px;width:5px;background:#658752;border-radius:50%;margin:0 5px 1px 0}.status-band{background:#e8eddd;border-block:1px solid #d7dfc9}.status-inner{display:flex;align-items:center;gap:26px;padding-top:16px;padding-bottom:16px;font-size:11px}.status-inner strong{white-space:nowrap;font-size:12px}.status-inner>span:first-of-type{flex:1;color:var(--muted)}.status-label{border:1px solid #b9c8a8;padding:1px 9px;border-radius:20px;white-space:nowrap}.section{padding-top:86px;padding-bottom:86px}h2{font-size:34px;line-height:1.45;letter-spacing:-1px;margin:0 0 22px}h3{font-size:19px;line-height:1.5;margin:0 0 12px}p{margin:0 0 18px;font-size:14px}p:last-child{margin-bottom:0}.intro{display:grid;grid-template-columns:.8fr 1.2fr;gap:90px}.large{font-size:21px;line-height:1.8}.muted{color:var(--muted)}.question{padding:25px 0;margin:26px 0;border-block:1px solid var(--line)}.question span{display:block;font-size:11px;color:var(--muted);margin-bottom:10px}.question strong{font-size:20px;font-weight:600;line-height:1.6}.system-section{background:var(--dark);color:var(--paper)}.system-section .eyebrow{color:var(--green)}.section-heading{display:flex;justify-content:space-between;align-items:flex-end;gap:40px;margin-bottom:36px}.section-heading h2{margin:0}.section-heading>p{font-size:12px;color:var(--muted);margin:0}.system-section .section-heading>p{color:#b2c5b6}.architecture{display:grid;grid-template-columns:repeat(3,1fr);border-top:1px solid #466358;border-bottom:1px solid #466358}.architecture article{padding:30px 30px 26px 0}.architecture article+article{padding-left:30px;border-left:1px solid #466358}.architecture .num{display:block;font-family:Consolas,monospace;font-size:12px;color:var(--green);margin-bottom:24px}.architecture h3{font-size:23px}.sub{font-size:11px;color:#b2c5b6;letter-spacing:1px}.architecture ul{padding-left:16px;margin:25px 0;font-size:13px;line-height:2}.note{font-size:11px;color:#b2c5b6;line-height:1.9}.flowline{display:flex;align-items:center;flex-wrap:wrap;gap:12px;padding-top:28px;font-size:11px}.flowline>span:not(.feedback){padding:7px 13px;border:1px solid #466358}.flowline b{font-weight:400;color:var(--green)}.feedback{margin-left:auto;color:var(--green)}.experiment-box{border:1px solid var(--line);background:var(--white);border-radius:5px;overflow:hidden}.tabs{display:flex;border-bottom:1px solid var(--line)}.tabs button{flex:1;text-align:left;background:#edf0e7;border:0;border-right:1px solid var(--line);color:var(--muted);font-size:11px;padding:18px 26px}.tabs button:last-child{border-right:0}.tabs button span{font-size:14px;margin-left:15px;font-weight:650}.tabs button[aria-selected=true]{background:var(--ink);color:var(--white)}.tabs button:focus-visible{outline-offset:-5px}.experiment{display:grid;grid-template-columns:1fr 1fr;gap:60px;padding:38px 34px}.experiment[hidden]{display:none}.experiment-tag{font-size:10px;color:var(--muted);letter-spacing:1px}.experiment h3{font-size:25px;margin-top:14px}.experiment p{color:var(--muted);font-size:13px}.experiment dl{margin:0;display:grid;grid-template-columns:76px 1fr;align-content:start;gap:14px;font-size:12px}.experiment dt{font-weight:600}.experiment dd{margin:0;color:var(--muted)}.metric-note{display:grid;grid-template-columns:.85fr 1.15fr;gap:50px;border-bottom:1px solid var(--line);padding:23px 0}.mono{font-family:Consolas,monospace;font-size:15px}.metric-note p{font-size:11px;color:var(--muted)}.scope{padding-top:0;display:grid;grid-template-columns:.85fr 1.15fr;gap:90px}.scope>div>p{color:var(--muted)}.scope-list>div{display:grid;grid-template-columns:90px 1fr;gap:20px;border-top:1px solid var(--line);padding:21px 0}.scope-list>div:last-child{border-bottom:1px solid var(--line)}.scope-label{font-size:12px;font-weight:650}.pending{color:#98662e}.scope-list p{font-size:13px;color:var(--muted)}.community-section{background:#e8eddd;border-block:1px solid var(--line)}.community{display:grid;grid-template-columns:1fr 1fr;gap:110px}.text-link{display:inline-block;font-size:12px;margin-top:15px;text-underline-offset:5px}.deliverables>div{display:flex;gap:25px;padding:0 0 27px;border-bottom:1px solid #cbd5c0;margin-bottom:27px}.deliverables>div:last-child{margin-bottom:0}.deliverables>div>span{font-family:Consolas,monospace;color:#72894d;font-size:13px}.deliverables h3{font-size:18px}.deliverables p{font-size:12px;color:var(--muted)}.timeline{list-style:none;padding:0;margin:50px 0 45px;display:grid;grid-template-columns:repeat(5,1fr);gap:25px}.timeline li{position:relative}.timeline time{font-family:Consolas,"Microsoft YaHei",sans-serif;font-size:10px;white-space:nowrap;display:block;margin-bottom:18px;color:var(--muted)}.timeline li>span{display:block;border-top:1px solid #b8c8a6;padding-top:12px;color:#81985b;font-family:Consolas,monospace;font-size:12px}.timeline h3{font-size:16px;margin-top:18px}.timeline p{font-size:12px;color:var(--muted)}.ai-note{border-left:3px solid #a5bc75;background:#ecefe3;padding:23px 27px;display:grid;grid-template-columns:.7fr 1.3fr;gap:40px}.ai-note h3{font-size:16px;margin:0}.ai-note p{font-size:12px;color:var(--muted)}.materials-section{background:#e2e9d7;border-block:1px solid #d0dbc4}.review-grid{display:grid;grid-template-columns:1fr 1fr;gap:100px;margin-top:45px}.review-grid h3{font-size:18px}.review-list{padding-left:21px;line-height:2.2;font-size:13px;color:var(--muted);margin:20px 0 30px}.download-panel{border:1px solid #bdcdb0;border-radius:4px;padding:25px 28px;background:#edf1e5}.download-panel .eyebrow{font-size:9px;margin-bottom:7px}.online-downloads a{display:flex;justify-content:space-between;gap:20px;text-decoration:none;border-top:1px solid #cdd8c2;padding:12px 0;font-size:12px}.online-downloads a:last-child{padding-bottom:0}.online-downloads a span:last-child{font-size:10px;color:var(--muted)}.online-downloads a:hover span:first-child{text-decoration:underline;text-underline-offset:3px}#copy-status{display:block;font-size:11px;margin-top:12px;min-height:20px;color:var(--muted)}.sources{display:grid;grid-template-columns:1fr 1fr;gap:100px}.sources h2{font-size:25px}.sources p{font-size:12px;color:var(--muted)}.source-links a{display:flex;justify-content:space-between;gap:18px;border-bottom:1px solid var(--line);padding:12px 0;text-decoration:none;font-size:12px}.source-links a:first-child{padding-top:0}.source-links strong{font-weight:650}.source-links span{font-size:10px;text-align:right;color:var(--muted)}.source-links a:hover strong{text-decoration:underline}.footer{display:flex;align-items:center;justify-content:space-between;gap:24px;padding-top:25px;padding-bottom:30px;border-top:1px solid var(--line)}.footer .brand{font-size:17px}.footer p,.footer>span{font-size:10px;margin:0;color:var(--muted)}.skip{position:absolute;left:15px;top:-100px;background:var(--white);padding:12px;z-index:99}.skip:focus{top:10px}
@media(min-width:1440px){.hero{padding-top:100px;padding-bottom:100px}}
@media(max-width:900px){.wrap{padding-left:28px;padding-right:28px}.header{padding:20px 28px}.header nav{gap:18px}.brand small{display:none}.hero{gap:28px;padding-top:50px;padding-bottom:50px}h1{font-size:43px}.hero-lead{font-size:14px}.thesis strong{font-size:13px}.intro,.scope,.community,.review-grid,.sources{gap:40px}.section{padding-top:62px;padding-bottom:62px}h2{font-size:29px}.scope{padding-top:0}.architecture article{padding-right:20px}.architecture article+article{padding-left:20px}.experiment{gap:30px;padding:28px}.timeline{gap:15px;grid-template-columns:repeat(3,1fr)}.timeline li{margin-bottom:15px}.ai-note{gap:25px}.feedback{margin-left:0}.desktop{display:none}}
@media(max-width:620px){.wrap{padding-left:21px;padding-right:21px}.header{padding:16px 21px;display:block}.brand{font-size:20px}.brand small{display:inline;font-size:10px}.header nav{margin-top:16px;justify-content:space-between;gap:12px;font-size:12px}.hero{display:flex;flex-direction:column;align-items:stretch;padding-top:40px;padding-bottom:40px;gap:35px}.hero .eyebrow{font-size:10px;margin-bottom:19px}h1{font-size:47px}.hero-lead{font-size:16px}.thesis strong{font-size:14px}.hero-visual{transform:none}.status-inner{gap:9px;flex-wrap:wrap;padding-top:14px;padding-bottom:14px}.status-inner>span:first-of-type{flex-basis:100%;order:3}.status-label{margin-left:auto}.section{padding-top:50px;padding-bottom:50px}.intro,.scope,.community,.sources{grid-template-columns:1fr;gap:25px}h2{font-size:29px}.intro h2 br,.scope h2 br,.community h2 br{display:none}.large{font-size:18px}.question strong{font-size:18px}.section-heading{display:block;margin-bottom:25px}.section-heading>p{margin-top:15px}.architecture{grid-template-columns:1fr}.architecture article,.architecture article+article{padding:24px 0;border-left:0}.architecture article+article{border-top:1px solid #466358}.architecture .num{margin-bottom:10px}.architecture ul{margin:16px 0}.flowline{gap:8px}.flowline>span:not(.feedback){padding:5px 8px}.feedback{width:100%;margin-top:6px}.tabs button{padding:14px 9px;font-size:9px;text-align:center}.tabs button span{display:block;font-size:12px;margin:4px 0 0}.experiment{grid-template-columns:1fr;gap:23px;padding:26px 20px}.experiment h3{font-size:22px}.experiment dl{grid-template-columns:70px 1fr;gap:13px 10px}.metric-note{grid-template-columns:1fr;gap:10px}.scope{padding-top:0}.scope-list>div{grid-template-columns:76px 1fr;gap:14px}.community{gap:35px}.timeline{grid-template-columns:1fr;gap:0;margin-top:30px;margin-bottom:25px}.timeline li{padding:0 0 23px 27px;border-left:1px solid #b8c8a6;margin:0}.timeline li>span{position:absolute;top:0;left:-10px;background:var(--paper);padding:0 2px;border:0;font-size:10px}.timeline time{margin-bottom:4px}.timeline h3{margin:5px 0 8px}.timeline p{max-width:330px}.ai-note{grid-template-columns:1fr;gap:14px;padding:20px}.review-grid{grid-template-columns:1fr;gap:25px;margin-top:25px}.download-panel{padding:22px}.source-links a{gap:12px}.source-links span{max-width:62%}.footer{flex-wrap:wrap;gap:12px}.footer p{width:100%;order:3}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}*{transition:none!important}}
@media print{body{font-size:10pt;background:white;color:#18332d}.header nav,.actions,.fine,#copy,#copy-status,.online-downloads,.skip{display:none}.header{padding:0 0 15px}.wrap{max-width:none;padding-left:0;padding-right:0}.hero{padding:25px 0;gap:25px;grid-template-columns:1fr .8fr}h1{font-size:35px}.hero-lead{font-size:12px}.hero-visual{transform:none}.section{padding:28px 0;break-inside:avoid}h2{font-size:23px}.eyebrow{margin-bottom:10px}.status-inner{padding:12px 0}.status-band,.system-section,.materials-section,.community-section{background:white;color:#18332d}.system-section .eyebrow,.system-section .note,.system-section .sub,.system-section .section-heading>p,.architecture .num,.flowline .feedback{color:#4e655a}.architecture,.architecture article+article{border-color:#b8c7bd}.architecture article{padding-top:18px}.section-heading{margin-bottom:20px}.tabs{display:none}.experiment,.experiment[hidden]{display:grid;border-top:1px solid #ccd4cd;padding:22px;break-inside:avoid}.experiment-box{border:0}.experiment h3{font-size:19px}.intro,.scope,.community,.review-grid,.sources{gap:35px}.timeline{margin:25px 0}.ai-note{background:#f1f3ee}.review-grid{margin-top:20px}.download-panel{display:none}.review-grid{grid-template-columns:1fr}.review-list{margin:10px 0}.source-links a{font-size:10px}.footer{padding-top:15px;padding-bottom:0}.hero-visual,.experiment,.architecture article,.timeline li{break-inside:avoid}@page{size:A4;margin:16mm}}
