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/* Final art-direction refinements after rendered desktop/mobile inspection. */
.runtime-comparison{margin-top:26px}.runtime-platform+ .runtime-platform{border-top:1px solid var(--line);padding-top:20px}.runtime-platform h4{font-size:11px;font-weight:650;letter-spacing:.01em;margin:0}.runtime-platform .runtime-metrics{padding-block:14px 20px;gap:40px}.runtime-platform .runtime-metrics dt{font-size:36px}.runtime-platform .runtime-metrics dd{font-size:10px}.prototype-story .runtime-comparison+ .note{margin-top:5px}
.detail-copy .prototype-optics{max-width:390px}
@media(min-width:721px) and (max-width:900px){.runtime-comparison{grid-column:2}.runtime-platform .runtime-metrics{display:flex}}
:root{--route-track:#acb8c0}:root[data-theme=dark]{--route-track:#586977}
@media(min-width:721px){.hero-media img{transform:translateX(12%);mask-image:linear-gradient(to right,transparent,#000 16%)}.hero-media{background:linear-gradient(135deg,#e6ebf1,#e9ecef 70%)}.hero h1{font-size:clamp(64px,7.5vw,112px)}}
@media(min-width:721px) and (max-width:900px){.hero-media img{transform:translateX(17%)}.hero h1{font-size:80px}}
/* Restore the original three-quarter studio view; repaired geometry stays intact. */
.hero{background:#e9ecef}.hero-media{inset:0;background:none;display:block}.hero-media img{width:100%;height:100%;max-height:none;object-fit:cover;object-position:center;transform:none;mask-image:none;filter:none}
@media(min-width:721px) and (max-width:1100px){.hero{height:auto;min-height:830px}.hero-media{inset:0 0 auto;height:400px}.hero-media img{object-position:right center}.hero-media:after{content:'';position:absolute;inset:0;background:linear-gradient(to bottom,transparent 82%,#e9ecef 100%)}.hero-content{padding-top:430px;max-width:580px}.hero h1{font-size:80px}}
@media(max-width:720px){.hero-media{inset:0 0 auto;height:315px;overflow:hidden}.hero-media img{height:min(100vw,430px);object-position:right center;position:relative;top:-25px}.hero-media:after{display:block;background:linear-gradient(to bottom,transparent 82%,#e9ecef 100%)}.hero-content{padding-top:330px}.hero{min-height:735px}}
@media(max-width:370px){.hero-media{height:280px}.hero-content{padding-top:300px}.hero{min-height:700px}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}*,*:before,*:after{animation:none!important;transition:none!important}.js .reveal{opacity:1;transform:none}}

/* Portfolio art direction: real work first, quiet surfaces, deliberate scale. */
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:root[data-theme=dark]{--bg:#14191e;--soft:#20282f;--line:#3b454e;--header:rgba(20,25,30,.94);--proof-paper:#1b232b}
.header{height:76px}.header-inner{max-width:1500px;margin-inline:auto;width:calc(100% - var(--gutter)*2)}
.header .brand{font-weight:650}.header .nav{font-size:11px;gap:25px}
.hero{display:block;height:680px;min-height:0}.hero-content{padding:156px 0 64px;max-width:545px;margin-left:max(var(--gutter),calc((100vw - 1500px)/2));position:relative}
.hero h1{font-size:clamp(56px,5.8vw,90px);line-height:1.065;letter-spacing:-.065em;text-wrap:initial}
.hero-identity{font-size:10px;letter-spacing:.16em;margin-bottom:26px}.hero-description{font-size:15px;max-width:360px;margin-top:24px}
.hero-media{inset:0;height:100%;background:none}.hero-media img{height:100%;position:static;top:auto;object-position:center;transform:none;mask-image:none}.hero-media:after{display:none}
.hero-actions{display:flex;align-items:center;gap:28px;margin-top:31px}.hero .button{margin-top:0;padding:15px 22px;font-size:11px;gap:32px}
.hero-research-link{display:flex;gap:12px;align-items:center;font-size:11px;color:#364956;white-space:nowrap;padding-block:12px;border-bottom:1px solid #9caab4}
.hero-research-link span{transition:transform .25s var(--ease)}.hero-research-link:hover span{transform:translateY(3px)}
.hero-caption{font-size:9px;padding-top:14px}.hero-caption p{color:var(--muted)}
.proof-section{padding:84px 0 64px}.proof-heading{display:flex;align-items:flex-end;justify-content:space-between;gap:35px;margin-bottom:32px}
.proof-title{font-size:clamp(30px,3vw,44px);letter-spacing:-.05em}.proof-heading p{font-size:12px;max-width:310px}
.proof-grid{display:grid;grid-template-columns:1.3fr 1fr;grid-template-rows:auto auto;gap:22px;align-items:stretch}
.proof-hardware{grid-row:1/3;min-width:0;display:flex;flex-direction:column;background:var(--proof-paper)}
.proof-photo{flex:1;display:flex;flex-direction:column;min-height:0}.proof-photo .image-button{flex:1;border-radius:0;min-height:300px;position:relative}
.proof-photo img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;object-position:42% 42%}.proof-photo figcaption{padding:9px 24px 0;margin:0;font-size:9px}
.proof-hardware-copy{padding:22px 24px 25px;display:flex;gap:20px;justify-content:space-between;align-items:end}
.proof-hardware-copy h3{font-size:32px;letter-spacing:-.045em}.proof-hardware-copy p{font-size:12px;margin-top:9px;max-width:250px}
.proof-jump{display:flex;align-items:center;gap:14px;font-size:10px;white-space:nowrap;border-bottom:1px solid var(--line);padding-bottom:5px}.proof-jump span{font-size:20px;transition:transform .25s var(--ease)}.proof-jump:hover span{transform:translate(3px,-3px)}
.proof-model{background:var(--proof-paper);padding:24px 28px 20px;transition:background .25s var(--ease);min-width:0}
.proof-project-heading{display:flex;align-items:center;justify-content:space-between;gap:20px;font-size:10px;font-weight:600;color:var(--muted)}.proof-project-heading>span:last-child{font-size:19px;color:var(--ink)}
.proof-model-copy{display:grid;grid-template-columns:1fr 1fr;gap:22px;align-items:end;margin-top:18px}.proof-model-copy h3{font-size:27px;line-height:1.18;letter-spacing:-.035em}.proof-model-copy p{font-size:9px;line-height:1.6;max-width:160px;justify-self:end}.proof-model-copy strong{display:block;color:var(--ink);font-size:33px;font-weight:500;line-height:1.2;margin-bottom:6px;letter-spacing:-.05em;font-variant-numeric:tabular-nums}.proof-model-copy small{font-size:14px;letter-spacing:0}
.proof-chart{display:block;width:100%;height:122px;margin-top:10px}.proof-chart path{fill:none;stroke-width:1.8}.proof-chart .proof-proposed{stroke:var(--accent)}.proof-chart .proof-baseline{stroke:var(--baseline);stroke-dasharray:4 4}.proof-chart .proof-gridline{stroke:var(--line);stroke-width:.5}.proof-chart text{fill:var(--muted);font:9px Manrope,sans-serif}
.proof-chart-key{display:flex;gap:20px;justify-content:flex-end;font-size:8px;color:var(--muted)}.proof-chart-key>span:before{content:'';display:inline-block;vertical-align:middle;width:12px;border-top:2px solid var(--accent);margin-right:6px}.proof-chart-key .proof-key-base:before{border-color:var(--baseline);border-top-style:dashed}.proof-boundary{font-size:8px;margin-top:10px}
.proof-model:hover,.proof-space:hover{background:var(--accent-soft)}
.proof-demo-link{display:flex;align-items:center;gap:8px;color:var(--accent);margin-top:8px;font-size:9px}
.proof-space{position:relative;display:grid;grid-template-columns:1fr 1.1fr;align-items:center;gap:8px;background:var(--proof-paper);padding:22px 28px;min-width:0;transition:background .25s var(--ease)}
.proof-space .proof-project-heading{font-size:9px}.proof-space h3{font-size:26px;line-height:1.2;letter-spacing:-.035em;margin:14px 0}.proof-space p{display:flex;flex-direction:column;gap:2px;font-size:9px}.proof-space strong{font-size:17px;color:var(--ink);font-weight:500;font-variant-numeric:tabular-nums}.proof-space svg{width:100%;height:auto;overflow:visible}.proof-space path{fill:none;stroke:var(--accent);stroke-width:2.8;stroke-linecap:round;stroke-linejoin:round}.proof-space circle{fill:var(--accent);stroke:var(--proof-paper);stroke-width:1.5}.proof-space-arrow{position:absolute;right:28px;top:18px;font-size:20px}
.intro{padding-block:78px 130px;border-top:0;grid-template-columns:1fr 1.1fr;gap:100px}.intro h2{font-size:clamp(40px,4.2vw,62px)}.intro .lead{font-size:19px;max-width:535px}
.work,.research,.spatial,.future,.models,.code,.archive{padding-block:110px}
.section-heading{margin-bottom:60px}.section-heading h2{font-size:clamp(38px,4.1vw,61px);font-weight:500;line-height:1.1}.section-description{font-size:14px;line-height:1.8;max-width:430px}
.research .section-heading,.spatial .section-heading,.future .section-heading{display:block;max-width:850px}.research .section-heading h2{font-size:clamp(35px,4vw,59px);max-width:950px;letter-spacing:-.05em}.research .section-description,.spatial .section-description,.future .section-description{max-width:680px;margin-top:23px;font-size:16px}
.prototype-layout{grid-template-columns:1.2fr 1fr;gap:70px}.prototype-main img{aspect-ratio:1.2;object-fit:cover;object-position:42% 38%}.prototype-story h3{font-size:35px;max-width:330px}
.runtime-platform .runtime-metrics dt{font-size:34px}.runtime-platform .runtime-metrics{gap:38px}.runtime-platform h4{font-size:11px}
.system-explorer{padding:42px;gap:44px;grid-template-columns:.85fr 1.6fr;margin-top:65px}.system-copy h3{font-size:31px}.system-panels{display:block;min-width:0}.system-panel p{font-size:13px}.pipeline{padding-bottom:15px}
.architecture-trace{display:grid;grid-template-columns:repeat(4,1fr);gap:8px;position:relative;isolation:isolate;margin:6px 0 18px}.trace-rail{height:1px;background:var(--line);position:absolute;left:10%;right:10%;top:25px;z-index:-1}
.trace-step{display:flex;flex-direction:column;align-items:center;text-align:center;font-size:10px;font-weight:600;line-height:1.5;color:var(--muted)}.trace-step small{font-size:8px;font-weight:450;margin-top:5px}.trace-icon{display:grid;place-items:center;width:50px;height:50px;border:1px solid var(--line);background:var(--soft);margin-bottom:15px;transition:background .3s,border-color .3s,color .3s}.trace-icon svg{width:27px;fill:none;stroke:currentColor;stroke-width:1.1;stroke-linecap:round;stroke-linejoin:round}.trace-step.is-active{color:var(--ink)}.trace-step.is-active .trace-icon{border-color:var(--accent);background:var(--accent-soft);color:var(--accent)}.trace-note{font-size:9px;margin-bottom:22px;text-align:center}
.research-specs{margin-block:48px 58px}.research-specs strong{font-size:47px}.results-layout{grid-template-columns:.85fr 1.7fr;gap:70px}.chart-panel{border:1px solid var(--line);background:var(--paper);padding:28px}.results-summary h3{font-size:34px}
.fold-inspector{display:grid;grid-template-columns:.9fr 1.7fr;gap:55px;margin-top:68px;padding:34px 0 42px;border-top:1px solid var(--line);border-bottom:1px solid var(--line)}.fold-intro h3{font-size:29px;line-height:1.2;letter-spacing:-.035em}.fold-intro p{font-size:12px;margin-top:20px;max-width:300px}.fold-switch{display:inline-flex;border:1px solid var(--line);padding:4px;gap:4px;margin-top:23px}.fold-switch button{padding:9px 11px;font-size:10px;font-weight:600;color:var(--muted);transition:color .2s,background .2s}.fold-switch button[aria-pressed=true]{background:var(--accent-soft);color:var(--ink)}.fold-switch button:disabled{cursor:default}
.fold-stage{min-width:0}.fold-graph{display:flex;align-items:center;justify-content:space-between;gap:13px;min-height:135px}.fold-input{width:62px;display:flex;flex-direction:column;align-items:center;gap:5px;font-size:9px}.fold-wave{width:65px}.fold-wave svg{width:100%;display:block;fill:none;stroke:var(--accent);stroke-width:1.5}.fold-flow{color:var(--muted);font-size:17px}.fold-local{width:140px;flex-shrink:0;text-align:center}.fold-local-visual{position:relative;display:flex;flex-direction:column;gap:5px;justify-content:center;min-height:91px}.fold-branch{font-size:8px;background:var(--accent-soft);border:1px solid var(--line);padding:3px 5px;width:100px;margin-inline:auto;opacity:1;transition:opacity .25s,transform .25s}.fold-merged{position:absolute;inset:0;display:grid;place-items:center;opacity:0;pointer-events:none;font-size:39px;color:var(--accent);background:var(--accent-soft);border:1px solid var(--line);width:90px;height:90px;margin:auto;transition:opacity .25s}.fold-stage[data-fold-state=deployment] .fold-branch{opacity:0;transform:scale(.82)}.fold-stage[data-fold-state=deployment] .fold-merged{opacity:1}.fold-local strong,.fold-attention strong{font-size:9px;font-weight:600;line-height:1.5;display:block;margin-top:10px}
.fold-attention{width:114px;text-align:center}.attention-grid{width:76px;height:76px;display:grid;grid-template-columns:repeat(4,1fr);gap:3px;margin:auto}.attention-grid i{background:var(--accent);opacity:var(--cell)}.fold-attention>span{font-size:8px;color:var(--muted)}.fold-output{font-size:11px;font-weight:600;line-height:1.6;text-align:center;border-left:1px solid var(--line);padding-left:14px}
.fold-readout{display:flex;justify-content:space-between;gap:30px;padding-top:30px;margin-top:15px;border-top:1px solid var(--line)}.fold-readout strong{display:block;font-size:30px;font-weight:500;letter-spacing:-.04em;line-height:1.25;font-variant-numeric:tabular-nums}.fold-readout small{font-size:20px;color:var(--accent)}.fold-readout span{display:block;font-size:10px;color:var(--muted);margin-top:8px}.fold-note{font-size:9px;margin-top:20px}
.spatial-layout{grid-template-columns:.8fr 1.65fr;gap:75px}.route-view{background:var(--soft);border:1px solid var(--line)}.spatial-research{grid-template-columns:1fr 1.65fr;gap:75px;margin-top:58px}.spatial-research h3{font-size:34px}
.runtime-source{font-size:9px;margin-top:15px}
.navigation-demo{display:grid;grid-template-columns:1fr 1.65fr;gap:75px;padding:54px 0 60px;margin-top:54px;border-block:1px solid var(--line);align-items:center}.demo-kind{font-size:10px;color:var(--muted);display:block;margin-bottom:24px}.demo-story h3{font-size:clamp(34px,4vw,53px);line-height:1.1;margin-bottom:26px;letter-spacing:-.05em}.demo-story>p{font-size:14px;max-width:390px}.demo-chapters{margin-top:29px;border-top:1px solid var(--line);max-width:380px}.demo-chapters button{display:grid;grid-template-columns:44px 1fr 20px;width:100%;gap:13px;text-align:left;padding:16px 0;border-bottom:1px solid var(--line);font-size:11px;transition:color .2s}.demo-chapters button>span:first-child{font-size:9px;font-variant-numeric:tabular-nums;color:var(--muted)}.demo-chapters button>span:last-child{justify-self:end}.demo-chapters button:hover,.demo-chapters button[aria-current=true]{color:var(--accent)}.demo-story .demo-note{font-size:10px;line-height:1.85;margin-top:25px}.demo-player{background:var(--soft);padding:30px 40px 20px;display:flex;flex-direction:column;align-items:center}.demo-player video{width:282px;max-width:100%;height:auto;background:#080b09;display:block;box-shadow:0 16px 35px rgba(10,20,30,.12)}.demo-player figcaption{display:flex;justify-content:space-between;gap:28px;width:100%;font-size:9px;margin-top:24px}.demo-player figcaption a{display:flex;gap:12px}
@media(max-width:900px){.navigation-demo{gap:40px;grid-template-columns:1fr 1.15fr}.demo-player{padding:24px}.demo-story h3{font-size:38px}.demo-story>p{font-size:13px}}
@media(max-width:680px){.navigation-demo{grid-template-columns:1fr;gap:30px;padding-block:36px 38px;margin-top:38px}.demo-story h3{font-size:34px}.demo-kind{margin-bottom:20px}.demo-story>p{font-size:14px}.demo-chapters{max-width:none;margin-top:23px}.demo-story .demo-note{font-size:10px}.demo-player{padding:24px 20px 19px}.demo-player video{width:270px}.demo-player figcaption{font-size:8px;gap:12px}}
.future-list{display:grid;grid-template-columns:1.15fr 1fr;gap:0 75px}.future-item{display:block;padding-block:34px;min-width:0}.future-item h3{margin-bottom:23px;font-size:28px;max-width:400px}.future-item>div>p{font-size:14px}.future-item:first-child{grid-row:1/4;border-top:1px solid var(--line);padding-right:35px}.future-item:first-child h3{font-size:38px}.future-item:first-child>div>p{font-size:16px}.future-item .details{margin-top:24px}.future-item .details .text-link{display:flex;width:fit-content;font-size:10px;max-width:100%}
.models .section-heading,.code .section-heading{grid-template-columns:1.3fr 1fr}.model-inventory{gap:46px 80px}.model-inventory h3{font-size:27px}.repo{padding:35px 12px 35px 0}.repo:hover{padding-left:12px}.repo p{font-size:13px}.repo h3{font-size:27px}.repo{transition:padding .25s var(--ease),background .25s var(--ease)}
:root[lang=zh-CN] .hero h1{font-size:clamp(54px,5.5vw,85px);line-height:1.13}:root[lang=zh-CN] .proof-title{font-size:35px}:root[lang=zh-CN] .section-heading h2{font-size:clamp(35px,3.6vw,54px)}:root[lang=zh-CN] .research .section-heading h2{font-size:clamp(32px,3.6vw,54px)}:root[lang=zh-CN] .proof-model-copy h3{font-size:25px}
@media(min-width:1600px){.hero{height:760px}.hero-content{padding-top:184px}.proof-grid{grid-template-columns:1.4fr 1fr}.proof-photo .image-button{min-height:390px}}
@media(min-width:681px) and (max-width:1100px){.hero-media img{object-fit:contain;mask-image:linear-gradient(to bottom,transparent,#000 18%,#000 83%,transparent)}}
@media(max-width:1100px){.header .nav{gap:16px;font-size:10px}.header-inner{gap:25px}.hero{height:590px;min-height:0}.hero-content{padding-top:139px;max-width:390px}.hero h1{font-size:61px}.hero-description{max-width:305px;font-size:14px}.hero-actions{gap:20px}.hero-research-link{font-size:10px}.hero .button{padding:13px 17px;gap:22px}.proof-grid{grid-template-columns:1.2fr 1fr;gap:16px}.proof-model{padding:21px}.proof-model-copy{gap:15px}.proof-model-copy h3{font-size:23px}.proof-model-copy strong{font-size:29px}.proof-space{padding:22px;grid-template-columns:1fr 1fr}.proof-space h3{font-size:23px}.proof-hardware-copy{display:block}.proof-jump{margin-top:17px;width:fit-content}.intro{gap:65px}.system-explorer{padding:32px;gap:35px;grid-template-columns:1fr}.system-copy{display:block}.system-copy h3{max-width:420px}.system-copy h3 br{display:none}.system-copy p{max-width:460px}.system-tabs{margin-top:20px}.architecture-trace{max-width:650px;margin-inline:auto}.trace-note{text-align:center}.system-panel p{max-width:750px}.results-layout{grid-template-columns:1fr;gap:30px}.fold-inspector{gap:30px;grid-template-columns:.85fr 1.65fr}.fold-graph{gap:8px}.fold-local{width:116px}.fold-attention{width:95px}.fold-output{padding-left:10px}.spatial-layout{gap:35px;grid-template-columns:1fr 1.45fr}.spatial-copy{display:block}.spatial-copy h3{font-size:32px}.spatial-controls{margin-top:27px}.spatial-research{gap:35px}.future-list{gap:0 45px}.future-item:first-child{padding-right:10px}.section-heading{gap:40px}.prototype-layout{grid-template-columns:1fr;gap:40px}.prototype-story{display:grid;grid-template-columns:1fr 1fr;gap:12px 45px}.prototype-story h3{grid-row:1/3}.prototype-story .runtime-comparison{grid-column:2}.prototype-story>.note{grid-column:2}.prototype-main img{aspect-ratio:1.8}.work,.research,.spatial,.future,.models,.code,.archive{padding-block:90px}}
@media(min-width:681px) and (max-width:900px){.hero{height:525px}.hero-content{padding-top:119px;max-width:310px}.hero h1{font-size:47px}.hero-description{font-size:13px;max-width:268px}.hero-identity{font-size:9px;margin-bottom:22px}.hero-actions{gap:15px;flex-wrap:wrap;margin-top:24px}.hero .button{padding:11px 15px}.hero-research-link{border:0;padding-block:7px}.hero-caption{text-align:left}.proof-grid{grid-template-columns:1fr 1fr}.proof-model-copy{display:block}.proof-model-copy p{margin-top:12px;max-width:200px;display:flex;gap:10px;align-items:center}.proof-model-copy strong{white-space:nowrap;margin:0}.proof-model-copy p>span{font-size:8px}.proof-chart{height:104px}.proof-space{display:block}.proof-space svg{position:absolute;right:12px;bottom:30px;width:45%;height:80px}.proof-space p{max-width:130px}.proof-space h3{font-size:21px}.proof-photo .image-button{min-height:330px}.proof-hardware-copy h3{font-size:27px}.proof-hardware-copy p{font-size:11px}.proof-heading p{max-width:230px}.fold-inspector{grid-template-columns:1fr}.fold-intro{display:grid;grid-template-columns:1fr 1fr;gap:16px 35px}.fold-intro p{margin:0;max-width:400px}.fold-switch{margin-top:0;grid-column:2}.fold-stage{max-width:680px}.fold-local{width:160px}.fold-attention{width:150px}.spatial-layout{grid-template-columns:1fr}.spatial-copy{display:grid;grid-template-columns:1fr 1.1fr;gap:10px 35px}.spatial-copy h3{grid-row:span 2}.spatial-controls,.spatial-copy .note{grid-column:2}.future-list{gap:0 35px}.future-item:first-child h3{font-size:32px}.future-item:first-child>div>p{font-size:14px}.model-inventory h3{font-size:23px}:root[lang=zh-CN] .hero h1{font-size:46px}}
@media(max-width:760px){.header{height:68px}.header .nav{display:none;position:absolute;left:0;right:0;top:67px;background:var(--bg);padding:20px var(--gutter) 28px;font-size:16px;gap:0;flex-direction:column;align-items:flex-start;box-shadow:0 25px 35px rgba(0,0,0,.08);border-bottom:1px solid var(--line)}.header .nav.is-open{display:flex}.header .nav a{width:100%;padding-block:12px}.header .menu-button{display:block}.header-actions{margin-left:auto}.header .brand{font-size:22px}}
@media(max-width:680px){:root{--gutter:24px}.hero{height:auto;min-height:0;display:block}.hero-media{inset:0 0 auto;height:270px;overflow:hidden}.hero-media img{width:100%;height:min(100vw,440px);position:relative;top:-15px;object-position:right center}.hero-media:after{display:block;content:'';position:absolute;inset:0;background:linear-gradient(to bottom,transparent 82%,#e9ecef 100%)}.hero-content{padding:274px 0 39px;margin-inline:var(--gutter);max-width:430px}.hero h1{font-size:clamp(39px,10.8vw,62px);line-height:1.08}.hero-identity{font-size:9px;margin-bottom:18px}.hero-description{font-size:13px;max-width:330px;margin-top:19px}.hero-actions{gap:23px;margin-top:23px;flex-wrap:wrap}.hero .button{padding:13px 17px;gap:25px}.hero-research-link{font-size:10px}.hero-caption{font-size:9px;text-align:left;max-width:380px;padding-top:10px}.proof-section{padding-block:64px 44px}.proof-heading{display:block;margin-bottom:25px}.proof-title{font-size:33px}.proof-heading 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@media(prefers-reduced-motion:reduce){.hero-content>*{animation:none!important}.trace-icon,.fold-branch,.fold-merged,.proof-jump span,.hero-research-link span{transition:none!important}}

/* Mineral surfaces, charcoal type, one olive interaction colour.
   Decorative surfaces and scientific data colours are separated in evidence.css.
   The photographs and experiment values are never colour-graded or rewritten. */
:root {
  --bg: #f7f7f4;
  --paper: #fdfdfb;
  --ink: #282b26;
  --muted: #606458;
  --line: #d5d9cf;
  --soft: #eceee6;
  --accent: #536047;
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  --baseline: #827381;
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  --header: rgba(247,247,244,.96);
  --hero-ground: #e8e6e1;
  --hero-ink: #282b26;
  --hero-muted: #56594f;
  --hardware-surface: #eee9e3;
  --model-surface: #ece8ed;
  --spatial-surface: #e5eadf;
  --research-surface: #f1f0f2;
  --spatial-section: #eef1e9;
  --future-surface: #f2f1ed;
  --footer-surface: #e9ebe3;
  --proof-paper: #eee9e3;
  --media-shadow: rgba(42,43,34,.12);
}
:root[data-theme=dark] {
  --bg: #171a17;
  --paper: #20251f;
  --ink: #f2f3eb;
  --muted: #b6bcae;
  --line: #41483d;
  --soft: #282f25;
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  --hero-ink: #f2f3eb;
  --hero-muted: #bcc2b4;
  --hardware-surface: #2e2a24;
  --model-surface: #2d2730;
  --spatial-surface: #273023;
  --research-surface: #1f1d22;
  --spatial-section: #1d231b;
  --future-surface: #22221c;
  --footer-surface: #242b21;
  --proof-paper: #2e2a24;
  --media-shadow: rgba(0,0,0,.26);
}
.header { border-bottom-color: color-mix(in srgb,var(--line) 68%,transparent); }
.hero { background: var(--hero-ground); color: var(--hero-ink); }
.hero-media { background: var(--hero-ground); }
.hero-media picture { display:block; width:100%; height:100%; }
.hero-image-dark { display:none; }
:root[data-theme=dark] .hero-image-light { display:none; }
:root[data-theme=dark] .hero-image-dark { display:block; }
.hero-identity,.hero-description { color: var(--hero-muted); }
.hero-research-link { color: var(--hero-ink); border-color: color-mix(in srgb,var(--hero-muted) 65%,transparent); }
.hero-research-link:hover { color: var(--accent); border-color:var(--accent); }
.button-primary { background: #30362c; color:#fafbf6; }
.button-primary:hover { background:#536047; }
:root[data-theme=dark] .button-primary { background:#d6ddca; color:#242b20; }
:root[data-theme=dark] .button-primary:hover { background:#edf1e5; }
.proof-hardware { background:var(--hardware-surface); }
.proof-model { background:var(--model-surface); }
.proof-space { background:var(--spatial-surface); }
.proof-model:hover { background: color-mix(in srgb,var(--model-surface) 80%,var(--paper)); }
.proof-space:hover { background: color-mix(in srgb,var(--spatial-surface) 80%,var(--paper)); }
.proof-model,.proof-space { transition:background .3s var(--ease); }
.proof-space circle { stroke:var(--spatial-surface); }
.prototype-optics-main img { object-position:50% 64%; }
.research { --section-surface:var(--research-surface); }
.spatial { --section-surface:var(--spatial-section); }
.future { --section-surface:var(--future-surface); }
.archive { --section-surface:var(--future-surface); }
.footer { --section-surface:var(--footer-surface); }
.research,.spatial,.future,.archive,.footer {
  background:var(--section-surface);
  box-shadow:0 0 0 100vmax var(--section-surface);
  clip-path:inset(0 -100vmax);
  border-top-color:color-mix(in srgb,var(--line) 68%,transparent);
}
.system-explorer { background:var(--spatial-surface); }
.trace-icon { background:var(--spatial-surface); }
.trace-step.is-active .trace-icon { background:var(--paper); }
.chart-panel { box-shadow:0 16px 46px -34px var(--media-shadow); border-color:color-mix(in srgb,var(--line) 72%,transparent); }
.route-view { background:var(--spatial-surface); border-color:color-mix(in srgb,var(--line) 70%,transparent); }
.demo-player { background:var(--hardware-surface); }
.demo-player video { box-shadow:0 18px 42px var(--media-shadow); }
.fold-switch { background:var(--paper); }
.fold-switch button[aria-pressed=true] { background:var(--accent-soft); }
.fold-branch { background:var(--paper); }
.fold-merged { background:var(--accent-soft); }
.attention-grid i { background:var(--accent); }
.repo:hover { background:var(--accent-soft); }
#lightbox::backdrop { background:rgba(20,24,18,.84); }
@media(max-width:680px) {
  .hero-media:after { background:linear-gradient(to bottom,transparent 78%,var(--hero-ground) 100%); }
}
/* Keep native picture and page colours aligned when JavaScript is disabled. */
@media(prefers-color-scheme:dark) {
  :root:not([data-theme]) .hero-image-light { display:none; }
  :root:not([data-theme]) .hero-image-dark { display:block; }
  :root:not([data-theme]) {
    color-scheme:dark;
    --bg:#171a17; --paper:#20251f; --ink:#f2f3eb; --muted:#b6bcae;
    --line:#41483d; --soft:#282f25; --accent:#bec8a8; --accent-soft:#34412a;
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    --research-surface:#1f1d22; --spatial-section:#1d231b;
    --future-surface:#22221c; --footer-surface:#242b21;
    --proof-paper:#2e2a24; --media-shadow:rgba(0,0,0,.26);
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  :root:not([data-theme]) .button-primary { background:#d6ddca; color:#242b20; }
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}
@media(prefers-reduced-transparency:reduce) {
  .header { background:var(--bg); backdrop-filter:none; }
}

/* Stone white and warm charcoal remain the foundation. Decorative tints belong
   to future-work prose; data uses its own stable blue/grey visual vocabulary. */
:root {
  --data-primary: #315f80;
  --data-baseline: #767c82;
  --data-grid: #dadddf;
  --data-soft: #e7edf3;
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  --future-mauve: #efedef;
  --baseline: var(--data-baseline);
  --route: var(--data-primary);
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}
:root[data-theme=dark] {
  --bg: #1c1b19;
  --paper: #262521;
  --ink: #f2f1eb;
  --muted: #bcb9b0;
  --line: #45433d;
  --soft: #2e2c27;
  --header: rgba(28,27,25,.96);
  --future-surface: #25241f;
  --footer-surface: #282720;
  --data-primary: #9cbed6;
  --data-baseline: #a0a7ae;
  --data-grid: #45494c;
  --data-soft: #293744;
  --evidence-paper: #252627;
  --evidence-soft: #292b2b;
  --future-olive: #2c2e25;
  --future-mauve: #2d282d;
  --baseline: var(--data-baseline);
  --route: var(--data-primary);
  --route-track: #586977;
}
/* Keep native OS-dark rendering equally usable without JavaScript. */
@media(prefers-color-scheme:dark) {
  :root:not([data-theme]) {
    --bg:#1c1b19; --paper:#262521; --ink:#f2f1eb; --muted:#bcb9b0;
    --line:#45433d; --soft:#2e2c27; --header:rgba(28,27,25,.96);
    --future-surface:#25241f; --footer-surface:#282720;
    --data-primary:#9cbed6; --data-baseline:#a0a7ae;
    --data-grid:#45494c; --data-soft:#293744;
    --evidence-paper:#252627; --evidence-soft:#292b2b;
    --future-olive:#2c2e25; --future-mauve:#2d282d;
    --baseline:var(--data-baseline); --route:var(--data-primary);
    --route-track:#586977;
  }
}

/* Neutral evidence surfaces, including the small homepage previews. */
.proof-model { background:var(--evidence-paper); }
.proof-space { background:var(--evidence-soft); }
.proof-model:hover { background:var(--evidence-paper); }
.proof-space:hover { background:var(--evidence-soft); }
.research,.spatial { --section-surface:var(--bg); }
.system-explorer { background:var(--paper); }
.chart-panel { background:var(--evidence-paper); border-color:var(--data-grid); }
.route-view { background:var(--evidence-soft); border-color:var(--data-grid); }

/* Stable series identities: blue solid/circles, grey dashed/squares. */
.proof-chart .proof-proposed,
.proposed-series path,
.proposed-series .ci-interval { stroke:var(--data-primary); }
.proof-chart .proof-baseline,
.baseline-series path,
.baseline-series .ci-interval { stroke:var(--data-baseline); }
.proposed-series circle { fill:var(--data-primary); }
.baseline-series rect { fill:var(--data-baseline); }
.proof-chart .proof-gridline,.chart-grid,.selected-window { stroke:var(--data-grid); }
.selected-point { stroke:var(--evidence-paper); }
.proof-chart-key > span:before { border-color:var(--data-primary); }
.proof-chart-key .proof-key-base:before { border-color:var(--data-baseline); }
.key-proposed:before { background:var(--data-primary); }
.key-baseline:before {
  background:repeating-linear-gradient(to right,var(--data-baseline),var(--data-baseline) 4px,transparent 4px,transparent 6px);
}
#delta-readout,.spatial-controls output { color:var(--data-primary); }
.proof-space path { stroke:var(--data-primary); }
.proof-space circle { fill:var(--data-primary); stroke:var(--evidence-soft); }
.chart-options input,.window-control input,.spatial-controls input { accent-color:var(--data-primary); }
.window-control input::-webkit-slider-thumb,
.spatial-controls input::-webkit-slider-thumb { background:var(--data-primary); }
.window-control input::-moz-range-thumb,
.spatial-controls input::-moz-range-thumb { background:var(--data-primary); }
.window-control input::-webkit-slider-runnable-track,
.spatial-controls input::-webkit-slider-runnable-track { background:var(--data-grid); }
.window-control input::-moz-range-track,
.spatial-controls input::-moz-range-track { background:var(--data-grid); }

/* Schematics are also blue/grey, but stay explicitly labelled as schematics. */
.trace-icon { background:var(--paper); }
.trace-step.is-active .trace-icon {
  color:var(--data-primary); border-color:var(--data-primary); background:var(--data-soft);
}
.fold-wave svg { stroke:var(--data-primary); }
.fold-switch { background:var(--evidence-paper); border-color:var(--data-grid); }
.fold-switch button[aria-pressed=true] { background:var(--data-soft); }
.fold-branch { background:var(--evidence-paper); border-color:var(--data-grid); }
.fold-merged { color:var(--data-primary); background:var(--data-soft); border-color:var(--data-grid); }
.attention-grid i { background:var(--data-primary); }
.fold-readout small { color:var(--data-primary); }

/* Two softly tinted prose panels share one grid and one inset. No decorative
   colour is assigned to a dataset, an experimental result, or a route. */
.future { --section-surface:var(--bg); }
.future-list { grid-template-columns:1fr 1fr; gap:18px; }
.future-item {
  padding:30px 32px;
  border-top:0;
  background:var(--paper);
}
.future-item:first-child {
  grid-row:auto;
  border-top:0;
  padding:30px 32px;
  background:var(--future-olive);
}
.future-item:nth-child(2) { background:var(--future-mauve); }
.future-item h3 { font-size:25px; line-height:1.25; margin-bottom:19px; }
.future-item:first-child h3 { font-size:35px; max-width:520px; }
.future-item:first-child > div > p { font-size:15px; }
.future-item .details { border-color:var(--line); }
@media(max-width:1100px) {
  .future-list { gap:16px; }
  .future-item,.future-item:first-child { padding:28px; }
  .future-item:first-child h3 { font-size:31px; }
}
@media(max-width:680px) {
  .future-list { display:grid; grid-template-columns:1fr; gap:14px; }
  .future-item:first-child { grid-row:auto; }
  .future-item,.future-item:first-child { padding:27px 24px; }
  .future-item h3 { font-size:25px; }
  .future-item:first-child h3 { font-size:29px; }
  .future-item:first-child > div > p { font-size:14px; }
}