:root{--paper:#f3f6fa;--paper-alt:#e6edf5;--ink:#0b1426;--ink-soft:#17243b;--muted:#5f6f87;--cyan:#5cd5e8;--cobalt:#246bfd;--signal-blue:#6596ff;--focus-blue:#2558c5;--amber:#f6ad49;--line:rgba(11,20,38,.2);--white:#ffffff;--gutter:clamp(22px,5.7vw,100px);--display:"Avenir Next Condensed","DIN Alternate","Arial Narrow",sans-serif;--sans:"Avenir Next",Avenir,-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC",sans-serif;--mono:"SFMono-Regular",Consolas,monospace}
*{box-sizing:border-box}html{scroll-behavior:smooth;scroll-padding-top:95px}body{margin:0;color:var(--ink);background:var(--paper);font:16px/1.65 var(--sans)}h1,h2,h3,h4,p,figure,dl,dd{margin:0}h1,h2,h3,h4{font-weight:400}p+p{margin-top:1em}a{color:inherit;text-underline-offset:5px;text-decoration-thickness:1px}button{font:inherit;cursor:pointer}button,a{-webkit-tap-highlight-color:transparent}button:disabled{cursor:default}img{display:block;max-width:100%;height:auto}button:focus-visible,a:focus-visible,summary:focus-visible{outline:3px solid var(--focus-blue);outline-offset:6px}::selection{background:var(--signal-blue);color:var(--ink)}[hidden]{display:none!important}.skip{position:fixed;top:10px;left:20px;z-index:300;transform:translateY(-160%);background:var(--paper);padding:8px 16px}.skip:focus{transform:none}
.progress{height:3px;position:fixed;top:0;left:0;right:0;z-index:201}.progress span{display:block;height:100%;width:0;background:var(--signal-blue)}
.nav{position:fixed;inset:0 0 auto;min-height:76px;display:flex;align-items:center;justify-content:space-between;gap:24px;padding:0 var(--gutter);background:rgba(11,20,38,.94);backdrop-filter:blur(16px);color:var(--paper);border-bottom:1px solid #ffffff20;z-index:100}.wordmark{display:inline-flex;align-items:center;gap:12px;font:26px var(--display);text-decoration:none}.fermata-mark{display:inline-block;position:relative;width:31px;height:27px;border:2px solid currentColor;border-bottom:none;border-radius:100% 100% 0 0;transform:scaleY(.65);margin-top:-6px}.fermata-mark:after{content:"";position:absolute;width:7px;height:10px;left:10px;bottom:-4px;background:var(--signal-blue);border-radius:50%}.nav nav{display:flex;gap:28px}.nav nav a{font-size:12px;text-decoration:none;color:#c7d3e5;padding:24px 0;position:relative}.nav nav a:hover,.nav nav a.active{color:var(--white)}.nav nav a.active:after{content:"";position:absolute;height:2px;background:var(--signal-blue);bottom:16px;left:0;right:0}.pdf-link{border:1px solid #ffffff40;border-radius:24px;text-decoration:none;font-size:11px;padding:8px 15px;white-space:nowrap}.pdf-link span{margin-left:12px}.pdf-link:hover{background:#ffffff15}.menu-toggle{display:none}
.hero{min-height:920px;min-height:max(850px,100svh);padding:154px var(--gutter) 26px;background:var(--ink);color:var(--paper);position:relative;display:grid;grid-template-columns:1.2fr 1fr;column-gap:6%;isolation:isolate;overflow:hidden}.hero:before{content:"";position:absolute;inset:0;z-index:-2;background:radial-gradient(ellipse at 83% 37%,#1b427c66,transparent 45%),radial-gradient(ellipse at 18% 95%,#1d315360,transparent 60%)}.hero-staff{position:absolute;left:47%;right:-6%;top:29%;height:305px;z-index:-1;transform:rotate(-11deg);opacity:.11;background:repeating-linear-gradient(0deg,transparent 0,transparent 59px,#c7d3e5 60px,#c7d3e5 61px)}.hero-copy{align-self:center;position:relative;z-index:2;padding-bottom:36px}.kicker{font-size:11px;letter-spacing:.04em;display:flex;gap:30px;color:#c0cee1;margin-bottom:39px}.kicker span{color:#83a9de}h1{font:400 clamp(100px,11.2vw,180px)/.85 var(--display);letter-spacing:-.065em;margin-left:-8px}.title-stop{color:var(--signal-blue)}.hero-title{font:400 clamp(30px,3.1vw,49px)/1.1 var(--display);letter-spacing:-.02em;margin-top:34px}.hero-desc{color:#b6c6dc;max-width:375px;font-size:14px;line-height:1.8;margin-top:23px}.chinese{font-size:12px;letter-spacing:.08em;color:var(--muted);line-height:1.8}.hero .chinese{color:#8ca7cc;margin-top:18px}.primary-link{display:inline-flex;align-items:center;gap:28px;border-bottom:1px solid #90a8ca;padding:15px 0 9px;margin-top:26px;text-decoration:none;font-size:12px}.primary-link span{font-size:21px;color:var(--signal-blue)}.hero-object{align-self:center;position:relative;margin:12px 0 50px}.photo-edge{padding:12px;background:#f3f6fa10;border:1px solid #b7cbe929;transform:rotate(3deg);box-shadow:0 24px 70px #0003}.hero-object img{width:100%;max-height:580px;object-fit:cover;object-position:center 52%}.hero-object figcaption{display:flex;justify-content:space-between;gap:14px;font-size:10px;line-height:1.5;color:#a4bbdc;margin-top:26px}.object-note{position:absolute;right:-25px;bottom:105px;background:var(--paper);color:var(--ink);border-radius:50%;width:100px;height:100px;display:grid;align-content:center;text-align:center;font:italic 16px/1.2 var(--display);transform:rotate(7deg);box-shadow:0 8px 25px #0002}.hero-bottom{grid-column:1/-1;display:flex;justify-content:space-between;align-items:end;align-self:end;gap:20px;border-top:1px solid #ffffff26;padding-top:22px;font-size:10px;color:#b1c3de;letter-spacing:.03em}.hero-bottom a{text-decoration:none;color:var(--paper)}
.section{padding:110px var(--gutter);position:relative}.paper{background:var(--paper)}.paper-alt{background:var(--paper-alt)}.ink{background:var(--ink);color:var(--paper)}.ink p{color:#b7c6dc}.ink .section-tag{color:var(--cyan)}.ink .chinese{color:#9cb9df}.section h2{font:400 clamp(44px,5.4vw,82px)/1.04 var(--display);letter-spacing:-.037em}.section-tag{font-size:11px;color:var(--cobalt);margin-bottom:25px}.chapter-heading .chinese{margin-top:25px}.lead{font:400 clamp(23px,2.1vw,31px)/1.4 var(--display);letter-spacing:-.015em}.footnote{font-size:11px;line-height:1.75;color:var(--muted);max-width:900px}.ink .footnote{color:#9bb3d2}.margin-note{font-size:12px;color:var(--cobalt);line-height:1.8}.margin-note span{font-size:10px;color:var(--muted)}
.overview{display:grid;grid-template-columns:1fr 3.7fr 2fr;gap:6%}.overview h2{font-size:clamp(35px,3.5vw,55px);margin-bottom:26px}.overview-main>.lead{font-size:24px;margin-bottom:21px}.overview-main>p:not(.lead){font-size:14px;color:var(--muted)}.project-facts{padding-top:7px;font-size:12px}.project-facts div{border-top:1px solid var(--line);padding:13px 0 18px}.project-facts dt{font-size:10px;color:var(--cobalt);margin-bottom:7px}.project-facts dd{line-height:1.6}.overview:after{content:"";position:absolute;left:var(--gutter);right:var(--gutter);bottom:0;height:1px;background:var(--line)}
.research{display:grid;grid-template-columns:1.2fr 1fr;column-gap:10%}.research-argument{align-self:end;font-size:14px;color:var(--muted)}.research-argument .lead{color:var(--ink);margin-bottom:24px}.research-notes{grid-column:1/-1;display:grid;grid-template-columns:repeat(3,1fr);gap:5%;margin-top:74px}.research-symbol{font:44px/1 var(--display);color:var(--focus-blue);display:block;height:55px}.research-notes h3{font:26px/1.2 var(--display);margin:15px 0}.research-notes p{font-size:13px;color:var(--muted)}.research-notes .implication{color:var(--ink);padding-top:15px;border-top:1px solid var(--line);margin-top:23px}.research-notes a{display:inline-block;font-size:11px;margin-top:20px;color:var(--cobalt)}.lineage{grid-column:1/-1;margin-top:70px;padding:33px 0 0;border-top:1px solid var(--line);display:grid;grid-template-columns:1fr 3fr;column-gap:8%;row-gap:15px}.lineage>span{font-size:11px;color:var(--cobalt)}.lineage p{font:32px/1.3 var(--display);max-width:750px}.lineage small{grid-column:2;font-size:11px;color:var(--muted)}
.interaction{display:grid;grid-template-columns:1.15fr 1fr;gap:50px 10%}.interaction-intro{align-self:end;font-size:13px}.interaction-intro .chinese{margin:17px 0 25px}.exchange{grid-column:1/-1;margin-top:15px;border-top:1px solid #ffffff30;border-bottom:1px solid #ffffff30;background:#ffffff04;padding:24px 32px 20px}.exchange-top{display:flex;justify-content:space-between;font-size:10px;color:#b0c3dd}.exchange-top>span:last-child{color:#8ca6ca}.exchange-body{display:grid;grid-template-columns:1fr 1.15fr 1fr;align-items:center;padding:36px 0 28px}.wearer{text-align:center}.wearer h3{font:24px var(--display);margin-top:20px}.wearer p{font-size:11px;margin-top:6px;min-height:19px}.band-illustration{height:157px;position:relative;display:grid;place-items:center;isolation:isolate}.band-illustration:before{content:"";position:absolute;height:157px;width:63px;z-index:-1;border-radius:6px;background:repeating-linear-gradient(90deg,#343e51 0px,#343e51 2px,#1d273a 3px,#1d273a 4px);box-shadow:inset 5px 0 6px #ffffff12,inset -5px 0 6px #0002}.band-face{width:111px;height:94px;border-radius:24px;border:1px solid #fff9;background:linear-gradient(145deg,#eff3f8,#c4cfdf);box-shadow:0 7px 14px #0005,inset 1px 1px 2px white;display:grid;place-items:center;position:relative;transform:rotate(-8deg)}.band-b .band-face{transform:rotate(8deg)}.band-face i{position:absolute;left:20px;right:20px;top:15px;height:5px;background:#738cba;border-radius:5px;transition:background .3s,box-shadow .3s}.band-face b{font:italic 29px var(--display);color:#334a70;margin-top:8px}.exchange-middle{text-align:center;padding-bottom:42px}.signal-path{height:28px;margin-bottom:20px;position:relative}.signal-path:before,.signal-path:after{content:"";position:absolute;left:0;right:0;height:1px;background:#6483b0;top:8px}.signal-path:after{top:22px;opacity:.3}.signal-path i{position:absolute;width:7px;height:7px;background:var(--signal-blue);border-radius:50%;left:0;top:5px;opacity:0}.signal-path b{position:absolute;right:0;top:4px;width:8px;height:8px;border-right:1px solid #6483b0;border-top:1px solid #6483b0;transform:rotate(45deg)}.exchange-middle p{font:24px var(--display);color:var(--paper)}.exchange-middle small{display:block;margin-top:12px;font-size:10px;color:#9cb6dc}.exchange-controls{display:flex;align-items:center;justify-content:space-between;gap:12px;border-top:1px solid #ffffff1c;padding-top:22px}.exchange-controls>div{display:flex;gap:12px}.exchange button{padding:11px 17px;font-size:11px;border:1px solid #ffffff45;border-radius:30px;background:var(--paper);color:var(--ink)}.exchange button.secondary{background:transparent;color:var(--paper)}.exchange #reply-button{background:var(--cyan);border-color:var(--cyan)}.exchange button:disabled{opacity:.32}.exchange button:hover:not(:disabled){filter:brightness(1.08)}.exchange button.quiet-button{background:none;border:none;color:#b4c6e2;text-decoration:underline;text-underline-offset:4px}.demo-announcement{font-size:10px;min-height:18px;margin-top:15px;color:#a7bedc!important}.exchange[data-phase="delivered"] .band-b .band-face i{background:var(--signal-blue);box-shadow:0 0 12px var(--signal-blue)}.exchange[data-phase="replied"] .band-a .band-face i{background:var(--cyan);box-shadow:0 0 12px var(--cyan)}.exchange[data-phase="delivered"] .signal-path i{animation:transmit .7s ease-out forwards}.exchange[data-phase="replied"] .signal-path i{background:var(--cyan);animation:reply .7s ease-out forwards}.vocabulary{grid-column:1/-1;display:grid;grid-template-columns:repeat(3,1fr);gap:6%}.vocabulary article{position:relative;padding-left:24px}.cue-dot{position:absolute;top:7px;left:0;width:9px;height:9px;border-radius:50%;background:var(--signal-blue)}.cue-dot.wait{background:var(--amber)}.cue-dot.received{background:var(--cyan)}.vocabulary h3{font:24px var(--display)}.vocabulary p{font-size:12px;margin-top:10px;max-width:280px}.interaction>.footnote{grid-column:1/-1;margin-top:-20px}@keyframes transmit{0%{left:0;opacity:1}85%{opacity:1}100%{left:100%;opacity:0}}@keyframes reply{0%{left:100%;opacity:1}85%{opacity:1}100%{left:0;opacity:0}}
.hardware{display:grid;grid-template-columns:1.15fr 1fr;gap:50px 10%}.hardware-intro{align-self:end;font-size:14px;color:var(--muted)}.hardware-intro .lead{color:var(--ink);margin-bottom:20px}.anatomy{grid-column:1/-1;display:grid;grid-template-columns:1fr 1fr;gap:10%;align-items:center;margin:25px 0}.anatomy-photo{max-width:470px}.anatomy-photo img{max-height:560px;width:100%;object-fit:cover;object-position:50% 50%}.zoom-button{display:block;position:relative;width:100%;padding:0;border:0;background:transparent;color:var(--ink);text-align:left}.zoom-button>span{position:absolute;bottom:16px;right:16px;border-radius:30px;background:var(--paper);font-size:10px;padding:7px 12px;box-shadow:0 2px 12px #0001;opacity:0;transition:opacity .2s}.zoom-button:hover>span,.zoom-button:focus-visible>span{opacity:1}figcaption{font-size:10px;line-height:1.6;color:var(--muted);margin-top:12px}.anatomy-list article{display:grid;grid-template-columns:40px 1fr;gap:12px;padding:25px 0;border-top:1px solid var(--line)}.anatomy-list article>span{font:italic 22px var(--display);color:var(--focus-blue)}.anatomy-list h3{font:30px/1.1 var(--display);margin-bottom:12px}.anatomy-list p{font-size:13px;color:var(--muted)}.circuit-panel{grid-column:1/-1;background:#e6edf575;padding:30px;border:1px solid var(--line)}.figure-heading{display:flex;justify-content:space-between;align-items:baseline;gap:24px}.figure-heading h3{font:26px/1.25 var(--display)}.figure-heading>span{font-size:10px;color:var(--muted);white-space:nowrap}.circuit{width:100%;display:block;margin-top:25px}.circuit-box rect{fill:var(--paper);stroke:#8da2c1;stroke-width:1}.circuit-box rect:nth-child(3){fill:#e0eaff;stroke:#246bfd}.circuit-text{fill:var(--ink);font:19px var(--sans)}.circuit-text .sub{font-size:13px;fill:#586b86}.detail{grid-column:1/-1;border-top:1px solid var(--line);border-bottom:1px solid var(--line);font-size:13px}.detail summary{list-style:none;display:flex;justify-content:space-between;gap:20px;padding:19px 0;cursor:pointer}.detail summary::-webkit-details-marker{display:none}.detail summary>span{font-size:21px;line-height:1}.detail[open] summary>span{transform:rotate(45deg)}.table-wrap{overflow:auto;padding-bottom:25px}table{width:100%;border-collapse:collapse;text-align:left;min-width:620px}caption{font-size:11px;text-align:left;color:var(--muted);padding:10px 0 20px}th{font-weight:500;color:var(--cobalt);font-size:11px}td,th{padding:12px 20px 12px 0;border-bottom:1px solid var(--line);vertical-align:top}td{font-size:12px}td:first-child{width:24%}td:nth-child(2){width:26%}
.pcb{display:grid;grid-template-columns:1.1fr 1fr;gap:40px 10%}.pcb-copy{align-self:end;font-size:14px;color:var(--muted)}.board-switch{grid-column:1/-1;display:flex;border-bottom:1px solid var(--line);gap:25px;margin-top:25px}.board-switch button{border:0;border-bottom:2px solid transparent;background:none;padding:13px 0;font-size:12px;color:var(--muted)}.board-switch button.selected{border-color:var(--cobalt);color:var(--ink)}.board-figure{grid-column:1/-1;margin-top:-20px}.board-figure img{width:100%;height:auto;max-height:610px;object-fit:contain;background:#e8edf4}.build-story{grid-column:1/-1;display:grid;grid-template-columns:1fr 2.2fr;gap:7%;align-items:center;margin-top:50px}.build-story h3{font:42px/1.1 var(--display);letter-spacing:-.03em;margin-bottom:20px}.build-story p{font-size:13px;color:var(--muted)}.mechanical-pair{grid-column:1/-1;display:grid;grid-template-columns:1fr 1fr;gap:25px}.mechanical-pair img{aspect-ratio:1.92;object-fit:contain;background:#e8edf4}.pcb>.footnote{grid-column:1/-1;margin-top:-10px}
.firmware{display:grid;grid-template-columns:1.15fr 1fr;gap:55px 10%}.firmware-intro{font-size:14px;align-self:end}.firmware-intro .lead{margin-bottom:20px}.signal-chain{grid-column:1/-1;list-style:none;display:grid;grid-template-columns:repeat(5,1fr);padding:0;margin:20px 0 0;border-top:1px solid #ffffff40}.signal-chain li{position:relative;padding:23px 20px 0 0}.signal-chain li:before{content:"";position:absolute;width:6px;height:6px;border-radius:50%;background:var(--cyan);top:-4px;left:0}.signal-chain li>span{font-size:10px;color:#8eacd4}.signal-chain h3{font:33px var(--display);margin-top:17px}.signal-chain p{font-size:11px;margin-top:10px}.firmware-columns{grid-column:1/-1;display:grid;grid-template-columns:1fr 1fr;gap:10%}.firmware-columns h3{font:28px/1.2 var(--display);margin-bottom:20px;max-width:350px}.firmware-columns p{font-size:13px}.ink .detail{border-color:#ffffff30}.code-layout{display:grid;grid-template-columns:1.2fr 1fr;gap:35px;padding-bottom:25px}.code-layout pre{margin:0;padding:25px;overflow:auto;background:#ffffff08;color:#a5d2f2;font:12px/1.8 var(--mono)}.code-layout h3{font:28px var(--display);margin:12px 0 20px}.code-layout p{font-size:13px}.code-layout a{display:inline-block;font-size:12px;color:var(--signal-blue);margin-top:18px}.code-detail+.code-detail{margin-top:-35px}
.interface .chapter-heading{margin-bottom:55px}.interface-layout{display:grid;grid-template-columns:1.7fr 1fr;gap:8%;align-items:center}.interface-layout figure{border:1px solid var(--line);background:#fff;padding:9px}.interface-layout figcaption{padding:0 12px 8px}.interface-notes article+article{margin-top:35px;padding-top:30px;border-top:1px solid var(--line)}.interface-notes article>span{font-size:10px;color:var(--cobalt)}.interface-notes h3{font:28px/1.17 var(--display);margin:12px 0 16px}.interface-notes p{font-size:13px;color:var(--muted)}.interface>.footnote{margin-top:35px}
.iteration{display:grid;grid-template-columns:1.3fr 1fr;gap:40px 10%}.iteration-lead{align-self:end;max-width:340px;color:var(--muted);font-size:15px}.case-list{grid-column:1/-1;margin-top:20px}.debug-case{border-top:1px solid var(--line)}.debug-case:last-child{border-bottom:1px solid var(--line)}.debug-case summary{cursor:pointer;list-style:none;display:grid;grid-template-columns:150px 1fr 30px;align-items:baseline;gap:20px;padding:25px 0}.debug-case summary::-webkit-details-marker{display:none}.debug-case summary>span{font-size:10px;color:var(--cobalt)}.debug-case summary h3{font:30px/1.2 var(--display)}.debug-case summary b{font-size:23px;font-weight:400;text-align:right}.debug-case[open] summary b{transform:rotate(45deg)}.debug-content{padding:15px 0 40px 170px;display:grid;grid-template-columns:1fr 1fr;gap:7%}.debug-content p{font-size:13px;color:var(--muted)}.debug-content strong{font-weight:500;color:var(--ink)}.replay-bars>div{display:grid;grid-template-columns:1fr 58px;column-gap:15px;margin:10px 0 26px}.replay-bars span{font-size:11px;grid-column:1/-1;margin-bottom:10px}.bar-track{height:20px;background:#0b142613}.bar-track i{display:block;width:var(--bar);height:100%;background:var(--cobalt)}.replay-bars b{font-size:13px;font-weight:500;line-height:20px}.replay-bars small{font-size:10px;color:var(--muted)}.debug-number>strong{font:95px/.9 var(--display);color:var(--focus-blue)}.debug-number p{margin-top:17px}.debug-number small{font-size:10px}.debug-content h4{font:38px/1.1 var(--display);margin-bottom:20px}
.evaluation{display:grid;grid-template-columns:1.15fr 1fr;gap:55px 10%}.evaluation-intro{align-self:end;font-size:14px;color:var(--muted)}.evaluation-intro .lead{color:var(--ink);margin-bottom:20px}.evaluation-grid{grid-column:1/-1;display:grid;grid-template-columns:1.3fr 1fr;gap:7%;align-items:start}.comparison{background:#e6edf5;padding:35px}.comparison .figure-heading{display:block}.comparison .figure-heading>span{display:block;margin-top:10px}.comparison-values{display:grid;grid-template-columns:1fr 1fr;gap:20px;padding:35px 0 25px}.comparison-values>div{border-left:1px solid var(--line);padding-left:20px}.comparison-values>div:first-child{padding-left:0;border:none}.comparison-values span{font-size:10px;color:var(--muted)}.comparison-values strong{display:block;font:72px/1.2 var(--display);letter-spacing:-.05em}.comparison-values>div:last-child strong{color:var(--cobalt)}.comparison-values strong small{font-size:28px;color:var(--muted);letter-spacing:0}.comparison-values p{font-size:10px;color:var(--muted)}.comparison-other{padding:18px 0;border-top:1px solid var(--line);border-bottom:1px solid var(--line);margin-bottom:24px}.comparison-other p{font-size:12px;display:flex;justify-content:space-between;gap:20px}.comparison-other p+p{margin-top:8px}.comparison-other b{font-weight:500}.evidence-ledger article{padding:20px 0;border-top:1px solid var(--line)}.evidence-ledger article:first-child{padding-top:0;border:none}.status-label{font-size:10px;color:var(--cobalt)}.status-label.pending{color:var(--focus-blue)}.evidence-ledger h3{font:27px/1.2 var(--display);margin:10px 0 13px}.evidence-ledger p{font-size:13px;color:var(--muted)}
.user-testing{display:grid;grid-template-columns:1.15fr 1fr;gap:55px 10%}.testing-intro{align-self:end;font-size:14px}.testing-intro .lead{margin-bottom:20px}.testing-table{grid-column:1/-1}.testing-row{display:grid;grid-template-columns:1fr 1.4fr 1.4fr;gap:6%;padding:25px 0;border-top:1px solid #ffffff25}.testing-row h3{font:26px/1.2 var(--display)}.testing-row p{font-size:12px;margin:0}.testing-head{font-size:10px;color:var(--cyan);border-top-color:#ffffff50;padding:15px 0}.testing-close{grid-column:1/-1;font:35px/1.25 var(--display);color:var(--paper)!important;max-width:800px}.testing-close span{display:block;font:12px/1.7 var(--sans);letter-spacing:.06em;color:#9db7a9;margin-top:20px}
.archive{display:grid;grid-template-columns:1.4fr 1fr;gap:13%}.archive-intro>p:not(.section-tag){font-size:14px;color:var(--muted);max-width:400px;margin-top:30px}.archive-actions{display:flex;flex-wrap:wrap;align-items:center;gap:20px;margin-top:32px;font-size:11px}.dark-button{background:var(--ink);color:var(--paper);padding:13px 20px;border-radius:28px;text-decoration:none}.sources-list{align-self:end}.sources-list h3{font:28px var(--display);margin-bottom:25px}.sources-list>a{display:flex;justify-content:space-between;gap:25px;text-decoration:none;padding:15px 0;border-top:1px solid var(--line);font-size:12px}.sources-list>a:hover{color:var(--cobalt)}.sources-list a small{font-size:10px;color:var(--muted);text-align:right;max-width:170px}.sources-list .footnote{margin-top:22px}footer{padding:35px var(--gutter);background:var(--ink);color:var(--paper);display:flex;align-items:center;justify-content:space-between;gap:35px}footer p,footer>a:last-child{font-size:10px;line-height:1.7;color:#a4bbdc}footer p{margin:0}
dialog{border:none;background:var(--paper);padding:22px;max-width:min(1250px,94vw);max-height:94svh;color:var(--ink);box-shadow:0 30px 100px #0006}dialog::backdrop{background:#050c19e8;backdrop-filter:blur(8px)}.dialog-image>img{max-height:76svh;max-width:100%;width:auto;margin:auto;object-fit:contain}dialog>p{font-size:12px;margin-top:15px;max-width:900px}#close-image{display:block;margin:0 0 15px auto;border:1px solid var(--line);border-radius:25px;background:none;padding:6px 17px;font-size:12px}
.notes-page{padding-top:150px}.notes-page h1{font-size:70px;line-height:1.1;margin:0 0 30px}.notes-page h2{font-size:40px;margin:60px 0 25px}.notes-page p{max-width:770px}.notes-page ul,.notes-page ol{padding-left:20px;max-width:850px;font-size:14px}.notes-page li{margin:15px 0}.notes-page code{font-size:11px;overflow-wrap:anywhere}.notes-page .source-card{border-top:1px solid var(--line);padding:22px 0}.notes-page h3{font:27px var(--display);margin-bottom:12px}.notes-page .source-card p{font-size:13px;color:var(--muted)}.notes-page .source-card>a{display:inline-block;font-size:12px;margin-top:13px}.source-files{font-size:11px!important;line-height:1.8;color:var(--muted);overflow-wrap:anywhere}
@media(min-width:1700px){.section{padding-left:max(var(--gutter),calc((100vw - 1500px)/2));padding-right:max(var(--gutter),calc((100vw - 1500px)/2))}.hero{padding-left:max(var(--gutter),calc((100vw - 1500px)/2));padding-right:max(var(--gutter),calc((100vw - 1500px)/2))}}
@media(max-width:1000px){.hero{min-height:850px;column-gap:5%;grid-template-columns:1.15fr 1fr}.hero-object img{max-height:480px}.object-note{right:-15px;width:80px;height:80px;font-size:14px}.nav nav{gap:19px}.overview{grid-template-columns:2fr 1fr;gap:35px}.margin-note{grid-column:1/-1}.section{padding-top:85px;padding-bottom:85px}.debug-content{padding-left:0}.debug-case summary{grid-template-columns:100px 1fr 24px}.figure-heading{display:block}.figure-heading>span{display:block;margin-top:10px}.interface-layout{gap:5%;grid-template-columns:1.4fr 1fr}.interface-notes h3{font-size:24px}.interface-notes p{font-size:12px}.comparison{padding:24px}.comparison-values strong{font-size:62px}.research-notes{gap:4%}.anatomy-list h3{font-size:27px}}
@media(max-width:760px){html{scroll-padding-top:83px}.nav{min-height:65px;gap:12px}.nav .wordmark{font-size:23px}.fermata-mark{width:27px;height:24px}.fermata-mark:after{left:8px}.nav nav{display:none;position:absolute;top:65px;left:0;right:0;background:var(--ink);padding:12px var(--gutter) 24px;box-shadow:0 14px 20px #0002}.nav nav.is-open{display:grid;grid-template-columns:1fr 1fr;gap:0 30px}.nav nav a{padding:14px 0;font-size:14px;border-bottom:1px solid #fff2}.nav nav a.active:after{display:none}.menu-toggle{display:flex;gap:9px;align-items:center;background:none;color:var(--paper);border:none;font-size:11px;padding:8px;margin-left:auto}.menu-toggle span{font-size:18px}.pdf-link{font-size:10px;padding:7px 10px}.pdf-link span{margin-left:4px}.hero{padding-top:112px;min-height:auto;grid-template-columns:1fr;gap:24px}.kicker{font-size:10px;margin-bottom:28px;justify-content:space-between}.hero h1{font-size:clamp(100px,22vw,160px)}.hero-copy{padding-bottom:0}.hero-title{font-size:37px;margin-top:25px}.hero-desc{font-size:13px;max-width:320px}.hero .chinese{font-size:11px}.primary-link{margin-top:18px}.hero-object{width:75%;max-width:400px;margin:15px 6% 38px auto}.hero-object img{max-height:430px}.hero-object figcaption{font-size:9px;margin-top:21px}.hero-bottom{display:grid;grid-template-columns:1fr 1fr;gap:10px;font-size:9px;padding:20px 0 3px}.hero-bottom span:nth-child(2){text-align:right}.hero-bottom a{grid-column:1/-1;margin-top:3px}.section{padding-top:70px;padding-bottom:70px}.section h2{font-size:clamp(40px,8.8vw,63px)}.section-tag{font-size:10px;margin-bottom:22px}.lead{font-size:24px}.overview,.research,.interaction,.hardware,.pcb,.firmware,.iteration,.evaluation,.user-testing,.archive{grid-template-columns:1fr;gap:32px}.overview h2{font-size:38px}.project-facts{display:grid;grid-template-columns:1fr 1fr;gap:12px 25px}.project-facts div{padding:13px 0}.project-facts dd{font-size:11px}.research-argument{font-size:13px}.research-notes{grid-template-columns:1fr;margin-top:10px;gap:33px}.research-notes article{display:grid;grid-template-columns:40px 1fr;gap:0 15px}.research-symbol{grid-row:1/5;font-size:34px;height:auto;padding-top:9px}.research-notes h3{margin:0 0 15px;font-size:27px}.research-notes p,.research-notes a{grid-column:2}.research-notes .implication{padding-top:12px;margin-top:15px}.lineage{margin-top:10px;grid-template-columns:1fr;gap:18px}.lineage p{font-size:28px}.lineage small{grid-column:1}.interaction{gap:30px}.exchange{margin-top:12px;padding:20px 15px 16px}.exchange-top{font-size:9px}.exchange-body{grid-template-columns:1fr .9fr 1fr;padding-top:28px}.band-illustration{height:120px}.band-illustration:before{height:120px;width:45px}.band-face{width:80px;height:69px;border-radius:19px}.band-face i{top:12px;left:17px;right:17px;height:4px}.band-face b{font-size:22px}.wearer h3{font-size:20px}.wearer p{font-size:9px;min-height:30px}.exchange-middle{padding-bottom:30px}.exchange-middle p{font-size:17px}.exchange-middle small{font-size:9px;line-height:1.5}.exchange-controls{flex-wrap:wrap;justify-content:flex-start;gap:10px}.exchange-controls>div{width:100%;gap:10px}.exchange button{font-size:10px;padding:10px 12px}.exchange-controls>div>button{flex:1}.demo-announcement{font-size:9px}.vocabulary{gap:18px;grid-template-columns:1fr}.vocabulary article{padding-left:24px}.vocabulary p{max-width:none;margin-top:5px}.vocabulary h3{font-size:23px}.interaction>.footnote{margin-top:0}.anatomy{grid-template-columns:1fr;gap:30px;margin:10px 0}.anatomy-photo{max-width:100%}.anatomy-photo img{max-height:500px;object-fit:contain;background:#cbd4df}.anatomy-list article{padding:20px 0}.anatomy-list h3{font-size:27px}.zoom-button>span{opacity:1;font-size:9px}.circuit-panel{padding:23px 15px}.figure-heading h3{font-size:25px}.circuit{min-width:660px}.circuit-panel{overflow:auto}.circuit-panel .footnote{min-width:260px}.detail summary{font-size:12px}.board-switch{gap:18px;margin-top:5px}.board-switch button{font-size:10px}.board-figure{margin-top:-12px}.build-story{grid-template-columns:1fr;gap:28px;margin-top:20px}.build-story h3{font-size:35px}.mechanical-pair{grid-template-columns:1fr;gap:25px}.pcb>.footnote{margin-top:0}.signal-chain{grid-template-columns:1fr;margin:15px 0 0;border:none;padding-left:15px}.signal-chain li{border-left:1px solid #fff5;display:grid;grid-template-columns:28px 1fr 1.3fr;gap:10px;padding:0 0 28px 24px;align-items:start}.signal-chain li:last-child{padding-bottom:0}.signal-chain li:before{top:8px;left:-4px}.signal-chain li>span{padding-top:4px}.signal-chain h3{font-size:27px;margin:0}.signal-chain p{margin:0;font-size:10px}.firmware-columns{grid-template-columns:1fr;gap:30px}.firmware-columns h3{font-size:27px;max-width:none}.code-layout{grid-template-columns:1fr;gap:22px}.code-layout pre{font-size:11px;padding:18px}.code-detail+.code-detail{margin-top:-15px}.interface .chapter-heading{margin-bottom:35px}.interface-layout{grid-template-columns:1fr;gap:35px}.interface-notes h3{font-size:28px}.interface-notes p{font-size:13px}.interface-notes article+article{margin-top:25px;padding-top:25px}.debug-case summary{grid-template-columns:1fr 20px;gap:10px;padding:24px 0}.debug-case summary>span{grid-column:1/-1}.debug-case summary h3{font-size:26px}.debug-case summary b{grid-column:2;grid-row:2}.debug-content{grid-template-columns:1fr;gap:30px;padding:0 0 30px}.iteration-lead{font-size:14px;max-width:none}.evaluation-grid{grid-template-columns:1fr;gap:35px}.comparison-values strong{font-size:68px}.testing-table{margin-top:10px}.testing-head{display:none}.testing-row{grid-template-columns:1fr;gap:16px;padding:25px 0}.testing-row h3{font-size:27px}.testing-row p{font-size:13px}.testing-row p:last-child{color:#92b6e5}.testing-row p:last-child:before{content:"Evidence to keep: ";color:var(--cyan)}.testing-close{font-size:30px}.archive{gap:55px}.archive-intro>p:not(.section-tag){font-size:13px}.sources-list>a{font-size:12px}footer{display:grid;grid-template-columns:1fr 1fr;gap:28px}footer>.wordmark{font-size:24px}footer p{font-size:9px}footer>a:last-child{text-align:right}dialog{padding:15px;max-width:96vw}.notes-page{padding-top:115px}.notes-page h1{font-size:52px}.notes-page h2{font-size:34px}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}*,*:before,*:after{animation:none!important;transition:none!important}.signal-path i{display:none}}
@media print{@page{size:A4;margin:14mm}html,body{background:white;color:#0b1426;font-size:10pt;scroll-behavior:auto}.nav,.progress,.skip,.primary-link,.hero-bottom a,.exchange-controls,.zoom-button>span,.board-switch,dialog,.menu-toggle,.archive-actions{display:none!important}.hero{min-height:0;padding:25px 0;background:white!important;color:#0b1426;grid-template-columns:1fr 1fr;gap:25px;break-after:page}.hero:before,.hero-staff,.object-note{display:none}.hero h1{font-size:70px}.hero-title{font-size:30px}.hero-desc,.hero .chinese,.hero .kicker,.hero-bottom,.hero-object figcaption{color:#586b86}.hero-object{margin:0}.hero-object img{max-height:440px}.photo-edge{transform:none;box-shadow:none;padding:0;border:0}.hero-bottom{color:#0b1426;font-size:8pt}.section{padding:30px 0;background:white!important;color:#0b1426;display:block;break-before:page}.section h2{font-size:34pt;margin-bottom:20px}.section-tag{margin-bottom:15px;color:#246bfd!important}.section p,.ink p{color:#253b60!important}.section>.chapter-heading{margin-bottom:25px}.lead{font-size:18pt}.research-notes,.anatomy,.evaluation-grid,.interface-layout{margin-top:30px;gap:25px}.research-notes{display:block}.research-notes article{margin:25px 0;break-inside:avoid}.lineage{display:block;margin-top:25px}.lineage>span{display:block;margin-bottom:10px}.lineage small{display:block;margin-top:15px}.project-facts{margin-top:25px}.exchange{border:1px solid #92a5be;margin:25px 0;padding:20px}.exchange-middle p,.exchange-middle small,.exchange-top{color:#0b1426}.exchange-body{padding:10px 0}.vocabulary{margin:25px 0;gap:20px}.band-illustration{height:120px}.band-illustration:before{height:120px}.signal-path:before{background:#0b1426}.circuit-panel{padding:15px;margin:25px 0}.circuit{min-width:0}.circuit-text{font-size:19px}.anatomy-photo img{max-height:350px}.detail,.debug-case{break-inside:avoid}.detail{margin-top:20px}.detail:not([open])>*:not(summary){display:block!important}details::details-content{display:block!important;content-visibility:visible!important}.code-layout{display:block}.code-layout pre{color:#0b1426;background:#e6edf5;font-size:9pt;white-space:pre-wrap}.board-figure{margin:25px 0}.build-story{margin:30px 0}.mechanical-pair{gap:15px}.signal-chain{margin:30px 0;border-color:#0b1426}.signal-chain p{font-size:8pt}.signal-chain h3{font-size:21pt}.firmware-columns{margin:25px 0}.code-detail+.code-detail{margin-top:20px}.interface-layout img{max-height:450px;object-fit:contain}.interface-notes h3{font-size:18pt}.interface-notes p{font-size:9pt}.debug-content{padding:15px 0 25px;gap:20px}.debug-case summary{grid-template-columns:90px 1fr 20px}.debug-case summary h3{font-size:21pt}.comparison{padding:20px}.evidence-ledger{margin-top:20px}.testing-row{border-color:#92a5be;break-inside:avoid}.testing-row h3{font-size:18pt}.testing-close{font-size:24pt;margin-top:30px}.archive .sources-list{margin-top:30px}.footnote{font-size:8pt}.zoom-button{cursor:default}figcaption{font-size:8pt}figure,table,.comparison{break-inside:avoid}footer{background:white;color:#0b1426;border-top:1px solid #92a5be;padding:20px 0}footer p,footer>a:last-child{color:#586b86}}
/* Small-screen content sizing: labels wrap; only detailed technical figures scroll. */
.section > *,.evaluation-grid > *,.comparison-values > *{min-width:0}
.exchange[data-phase="replied"] .signal-path b{left:0;right:auto;transform:rotate(-135deg)}
.exchange[data-phase="delivered"][data-cue="wait"] .band-b .band-face i{background:var(--amber);box-shadow:0 0 12px var(--amber)}
.exchange[data-cue="wait"] .signal-path i{background:var(--amber)}
.exchange[data-phase="replied"] .signal-path i{background:var(--cyan)}
@media(max-width:760px){.hero h1{font-size:clamp(80px,25.6vw,160px)}.figure-heading>span{white-space:normal}}
@media(max-width:360px){.nav{gap:6px}.nav .wordmark{font-size:22px;gap:6px}.nav .fermata-mark{display:none}.menu-toggle{font-size:10px;gap:6px;padding:7px 4px}.pdf-link{font-size:9px;padding:7px 9px}.comparison{padding:20px}.comparison-values{gap:10px}.comparison-values>div{padding-left:12px}.comparison-values strong{font-size:55px}.comparison-values strong small{font-size:23px}}
/* Visual technical edition — photographs, instruments and short explanations. */
.hero-v2{display:block;min-height:0;padding-top:138px;padding-bottom:27px}.hero-v2:before{display:none}.hero-heading{display:flex;justify-content:space-between;align-items:flex-end;gap:40px;margin-bottom:54px}.hero-v2 h1{font-size:clamp(100px,13.5vw,208px)}.hero-v2 .kicker{margin-bottom:32px}.hero-statement{padding:0 1% 0 0;min-width:230px}.hero-statement .hero-title{font-size:clamp(29px,3vw,44px);margin:0}.hero-statement>p:last-child{font-size:12px;color:#a7b9d3;margin-top:19px}.hero-render{margin:0 -2vw 30px}.hero-render img{width:100%;height:auto;aspect-ratio:1.78;object-fit:cover}.hero-render figcaption{display:flex;justify-content:space-between;padding:0 2vw;font-size:10px;color:#a2b8d8;margin-top:17px}.hero-render figcaption a{text-decoration:none;color:var(--paper)}.hero-v2 .hero-bottom{margin-top:26px}.section-intro{display:grid;grid-template-columns:1.5fr 1fr;align-items:end;gap:12%;margin-bottom:50px}.intro-note{font-size:14px;color:var(--muted);max-width:390px}.ink .intro-note{color:#a4bcdc}.field-intro{display:grid;grid-template-columns:1.15fr 1fr;gap:10%;align-items:center}.field-photo img{width:100%;max-height:750px;object-fit:cover}.field-copy h2{font-size:clamp(45px,5.2vw,78px)}.field-copy>.lead{font-size:24px;margin-top:29px;max-width:420px}.field-copy>.chinese{margin-top:15px}.micro-facts{display:flex;gap:35px;padding:25px 0;margin-top:15px}.micro-facts span{font:44px/1.3 var(--display);color:var(--cobalt)}.micro-facts p{font-size:10px;color:var(--muted)}.compact-facts{font-size:11px}.compact-facts>div{display:grid;grid-template-columns:85px 1fr;gap:15px;border-top:1px solid var(--line);padding:14px 0}.compact-facts dt{color:var(--cobalt)}.research-triptych{display:grid;grid-template-columns:repeat(3,1fr);gap:6%}.research-triptych article{border-top:1px solid var(--line);padding-top:26px}.research-triptych small{font-size:10px;color:var(--muted)}.research-triptych h3{font:28px/1.2 var(--display);margin:13px 0 24px}.research-triptych p{font-size:13px}.research-triptych a{font-size:11px;display:inline-block;margin-top:16px;color:var(--cobalt)}.research-v2>.footnote{margin-top:42px}.decision-sketch{display:flex;gap:12px;align-items:center;min-height:45px;font:11px var(--mono);margin-bottom:12px}.decision-sketch span{color:var(--focus-blue);font-size:22px}.tacton-score{display:flex;gap:12px;align-items:center;height:45px;margin-bottom:12px}.tacton-score i{width:21px;height:21px;background:var(--cobalt);border-radius:15px}.tacton-score b{height:1px;width:35px;background:#246bfd50;margin:0 12px}.tacton-score .long{width:45px;background:var(--focus-blue)}.cue-score{grid-column:1/-1;display:flex;justify-content:space-between;gap:30px;border-top:1px solid #ffffff30;padding-top:25px}.cue-score>div{display:grid;grid-template-columns:85px 1fr;gap:10px 20px;align-items:center;flex:1}.cue-score span{font-size:12px}.cue-score>div>div{display:flex;gap:10px;align-items:center;height:18px}.cue-score i{display:block;width:13px;height:13px;border-radius:10px;background:var(--cyan)}.cue-score .long{width:31px}.cue-score>div:nth-child(2) i{background:var(--amber)}.cue-score>div:nth-child(3) i{background:#3dc798}.cue-score small{grid-column:1/-1;font:10px var(--mono);color:#96b2a3}.hardware-evidence{grid-column:1/-1;display:grid;grid-template-columns:1fr 1.3fr;gap:8%;align-items:center}.hardware-evidence figure img{width:100%;height:385px;object-fit:cover;object-position:50% 48%}.component-grid{display:grid;grid-template-columns:1fr 1fr;gap:30px}.component-grid article{border-top:1px solid var(--line);padding-top:18px}.component-grid article>span{font-size:10px;color:var(--cobalt)}.component-grid h3{font:26px/1.1 var(--display);margin:12px 0}.component-grid p{font:11px/1.8 var(--mono);color:var(--muted)}.making-v2 .board-switch{margin:0 0 25px}.making-v2 .board-figure{margin:0}.making-v2 .board-figure img{max-height:660px;aspect-ratio:1.64;object-fit:cover;background:var(--paper-alt)}.mechanical-studies{display:grid;grid-template-columns:1fr 1fr;gap:28px;margin-top:36px}.mechanical-studies img{width:100%;aspect-ratio:1.64;object-fit:cover}.mechanical-studies figcaption{display:grid;grid-template-columns:1fr;gap:5px;font-size:11px}.mechanical-studies figcaption b{font:24px var(--display);color:var(--ink)}.revision-line{display:flex;align-items:center;justify-content:space-between;gap:24px;margin:50px 0 30px;border-top:1px solid var(--line);padding-top:30px}.revision-line>div{flex:1}.revision-line small{font:9px var(--mono);color:var(--muted)}.revision-line strong{display:block;font:30px var(--display);margin:10px 0}.revision-line p{font-size:11px;color:var(--muted)}.revision-line>span{font-size:28px;color:var(--cobalt);margin-right:20px}.ml-v2 .signal-chain{margin-top:5px}.model-spread{display:grid;grid-template-columns:1fr 1fr;gap:8%;margin-top:70px;padding-top:35px;border-top:1px solid #ffffff30}.figure-kicker{font:10px/1.6 var(--mono);color:var(--cobalt);margin-bottom:24px;letter-spacing:.015em}.ink .figure-kicker{color:var(--cyan)}.feature-bar{display:flex;height:48px;gap:4px;margin-bottom:26px;font:18px var(--mono)}.feature-bar span{display:flex;align-items:center;justify-content:center;background:var(--cyan);color:var(--ink);min-width:0}.feature-bar span:nth-child(2){background:var(--signal-blue)}.feature-bar span:nth-child(3){background:var(--amber)}.feature-key>div{display:flex;gap:12px;margin-top:16px}.feature-key i{width:7px;height:7px;flex:none;background:var(--cyan);margin-top:7px}.feature-key>div:nth-child(2) i{background:var(--signal-blue)}.feature-key>div:nth-child(3) i{background:var(--amber)}.feature-key b{font-size:12px;font-weight:500;color:var(--paper)}.feature-key span{display:block;font-size:11px;color:#a0b8d9;margin-top:4px}.forest-panel svg{display:block;width:100%;margin:30px 0 10px}.forest-panel>.footnote{font-size:10px}.code-pair{display:grid;grid-template-columns:1fr 1fr;gap:28px;margin-top:55px}.code-card{min-width:0;background:#ffffff06;border:1px solid #ffffff25;padding:25px}.code-caption{display:flex;justify-content:space-between;gap:10px;font:9px var(--mono);color:#83abe0;border-bottom:1px solid #ffffff1c;padding-bottom:16px}.code-caption>span:last-child{color:#b0c4e0}.code-card pre{margin:22px 0;overflow-x:auto;font:12px/1.9 var(--mono);color:#b3daf6;tab-size:2}.code-card>p{font-size:12px;color:#a5bddb}.code-card b{font-weight:500;color:var(--paper)}.code-card a{display:inline-block;font-size:10px;margin-top:15px;color:var(--signal-blue)}.code-note{display:block;margin-top:15px;font-size:10px;color:#8ca8d2}.guard-panel{display:grid;grid-template-columns:1fr 1.5fr;gap:9%;margin-top:65px;align-items:center}.guard-panel h3{font:32px/1.1 var(--display);margin-bottom:16px}.guard-panel>div>p:not(.figure-kicker){font-size:12px}.guard-score{padding:24px;background:#ffffff04;border:1px solid #ffffff20}.guard-score>div{display:flex;align-items:center;position:relative;height:44px;gap:0;font:9px var(--mono)}.guard-score>div>span{flex:none;width:95px;color:#a4b9d9}.guard-score i{display:block;font-style:normal;text-align:center;line-height:25px}.guard-score .continuous{height:20px;flex:1;background:repeating-linear-gradient(90deg,transparent 0px,transparent 4px,#65a1f5 5px,#65a1f5 6px,transparent 7px,transparent 11px);border-block:1px solid #65a1f555}.motor-block,.mask-block{width:40%;background:var(--signal-blue);color:var(--ink)}.guard-score .recovery-block{width:22%;background:repeating-linear-gradient(135deg,#f6ad4920 0,#f6ad4920 3px,#f6ad4960 3px,#f6ad4960 4px);color:var(--amber)}.guard-score .resume-block{flex:1;color:var(--cyan)}.guard-score>p{font-size:10px;margin-top:18px;color:#83a8da}.quality-row{display:flex;flex-wrap:wrap;gap:14px 30px;border-top:1px solid #ffffff30;margin-top:35px;padding-top:23px;font:10px var(--mono);color:#a0b8d9}.quality-row b{font-weight:400;color:var(--signal-blue)}.technical-chart{background:#f3f6fa}.technical-chart>img{width:100%;height:auto}.technical-chart figcaption{padding:0 24px 22px}.three-notes{display:grid;grid-template-columns:repeat(3,1fr);gap:6%;margin-top:38px}.three-notes article{border-top:1px solid var(--line);padding-top:21px}.three-notes article>span{font:10px var(--mono);color:var(--cobalt)}.three-notes h3{font:25px/1.2 var(--display);margin:15px 0}.three-notes p{font-size:12px;color:var(--muted)}.recorder-spread{display:grid;grid-template-columns:1.4fr 1fr;gap:7%;align-items:center}.recorder-spread figure{background:#fff;padding:8px;border:1px solid var(--line)}.recorder-spread figcaption{padding:0 10px 8px}.numbered-notes article{display:grid;grid-template-columns:28px 1fr;gap:16px;border-top:1px solid var(--line);padding:24px 0}.numbered-notes article>b{font:italic 19px var(--display);color:var(--focus-blue)}.numbered-notes h3{font:26px var(--display);margin-bottom:10px}.numbered-notes p{font-size:12px;color:var(--muted)}.link-diagram{padding:32px;background:var(--paper);margin-top:55px;border:1px solid var(--line)}.link-devices{display:flex;align-items:center;gap:24px;max-width:760px;margin:38px auto 0}.device-node{display:flex;flex:1;flex-direction:column;align-items:center;padding:20px;border:1px solid #246bfd77;border-radius:10px}.device-node small{font:9px var(--mono);color:var(--cobalt)}.device-node strong{font:47px var(--display)}.device-node>span{font-size:10px;color:var(--muted)}.peer-line{display:flex;flex:1;flex-direction:column;text-align:center}.peer-line b{font:43px var(--display);color:var(--cobalt)}.peer-line span{font-size:12px}.peer-line small{font:9px var(--mono);color:var(--muted);margin-top:5px}.debug-links{display:flex;justify-content:space-between;max-width:540px;margin:20px auto;color:var(--focus-blue);font:11px var(--mono)}.host-node{border:1px solid var(--line);max-width:420px;margin:auto;display:flex;flex-direction:column;text-align:center;padding:20px;background:var(--paper-alt)}.host-node>span{font:10px var(--mono);color:var(--cobalt)}.host-node b{font:25px var(--display);margin:5px 0}.host-node small{font-size:9px;color:var(--muted)}.link-diagram>.footnote{max-width:760px;margin:25px auto 0;text-align:center}.recording-workflow{margin:55px 0}.recording-workflow ol{list-style:none;padding:0;display:grid;grid-template-columns:repeat(5,1fr);gap:24px;counter-reset:record}.recording-workflow li{position:relative;border-top:1px solid var(--line);padding-top:24px;counter-increment:record}.recording-workflow li:before{content:counter(record,decimal-leading-zero);position:absolute;top:-8px;left:0;background:var(--paper-alt);padding-right:12px;font:10px var(--mono);color:var(--cobalt)}kbd{font:12px var(--mono);padding:8px 15px;border:1px solid #5f6f8760;border-radius:6px;box-shadow:0 3px #5f6f8720;display:inline-block;background:var(--paper)}.recording-workflow li>span{display:block;font-size:11px;margin-top:15px;line-height:1.8;color:var(--muted)}.recording-workflow>.footnote{margin-top:25px}.session-spread{display:grid;grid-template-columns:1fr 1fr;gap:7%}.file-tree>div{display:flex;justify-content:space-between;gap:15px;font-size:10px;padding:11px 0;border-bottom:1px solid var(--line)}.file-tree code{font:11px var(--mono);color:var(--cobalt)}.file-tree span{color:var(--muted);text-align:right}.light-code{background:var(--paper);border-color:var(--line)}.light-code .code-caption{color:var(--cobalt);border-color:var(--line)}.light-code .code-caption>span:last-child{color:var(--muted)}.light-code pre{color:var(--ink);font-size:11px}.light-code>p{color:var(--muted)}.clock-ledger{display:grid;grid-template-columns:repeat(3,1fr);gap:25px;margin:35px 0}.clock-ledger>div{border-top:1px solid var(--line);padding-top:20px}.clock-ledger b{display:block;font:18px var(--display)}.clock-ledger span{display:block;font-size:11px;color:var(--muted);margin-top:8px}.safeguard-grid{display:grid;grid-template-columns:1fr 1fr;gap:25px;padding:15px 0 30px}.safeguard-grid p{margin:0;font-size:12px;color:var(--muted)}.safeguard-grid b{font-weight:500;color:var(--ink)}.replay-story{display:grid;grid-template-columns:.8fr 1.2fr;gap:7%;align-items:center}.replay-story h3{font:36px/1.15 var(--display);margin-bottom:20px}.replay-story p{font-size:13px;color:var(--muted)}.window-example{display:flex;align-items:center;gap:24px;margin:30px 0 20px}.window-example small{font:9px var(--mono);color:var(--cobalt)}.window-example b{display:block;font:32px var(--display);margin:6px 0}.window-example div>span{font:10px var(--mono);color:var(--muted)}.window-example>span{font:40px var(--display);color:var(--focus-blue)}.replay-story .footnote{font-size:10px}.failure-matrix{margin-top:65px}.failure-header,.failure-matrix article{display:grid;grid-template-columns:.85fr 1fr 1.3fr;gap:40px;border-top:1px solid var(--line);padding:25px 0}.failure-header{padding:14px 0;font:10px var(--mono);color:var(--cobalt)}.failure-matrix h3{font:26px/1.15 var(--display)}.failure-matrix p{font-size:12px;color:var(--muted);margin:0}.result-strip{display:grid;grid-template-columns:repeat(3,1fr);gap:5%;margin-top:40px}.result-strip article{border-top:1px solid var(--line);padding-top:22px}.result-strip strong{font:65px/1.2 var(--display);color:var(--cobalt)}.result-strip h3{font:24px/1.2 var(--display);margin:13px 0}.result-strip p{font-size:12px;color:var(--muted)}.study-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:5%;margin-top:20px}.study-grid article{border-top:1px solid #ffffff30;padding-top:22px}.study-grid article>span{font:11px var(--mono);color:var(--cyan)}.study-grid h3{font:33px var(--display);margin:18px 0}.study-grid p{font-size:12px}.study-grid small{font:10px var(--mono);display:block;margin-top:20px;color:#96b7e1}.next-study>.chinese{margin-top:44px}.candidate-chart{background:var(--paper)}
@media(min-width:1700px){.hero-render{margin-left:0;margin-right:0}}
@media(max-width:1000px){.hero-heading{gap:24px}.hero-statement{min-width:200px}.field-intro{gap:6%}.field-copy>.lead{font-size:22px}.field-copy h2{font-size:52px}.micro-facts{gap:22px}.compact-facts>div{grid-template-columns:70px 1fr;gap:10px}.code-card{padding:20px}.code-card pre{font-size:10px}.model-spread{gap:6%}.recorder-spread{gap:5%}.numbered-notes article{padding:17px 0}.numbered-notes h3{font-size:23px}.feature-key span{font-size:10px}.revision-line strong{font-size:24px}.guard-panel{gap:5%;grid-template-columns:1fr 1.7fr}.guard-score{padding:20px}.replay-story{gap:4%}.window-example{gap:15px}.failure-matrix article,.failure-header{gap:24px}.file-tree>div{flex-wrap:wrap;gap:4px}.file-tree span{text-align:left}.cue-score>div{grid-template-columns:1fr;gap:10px}.cue-score small{font-size:9px}}
@media(max-width:760px){.hero-v2{padding-top:108px}.hero-heading{display:block;margin-bottom:32px}.hero-v2 h1{font-size:clamp(80px,25.6vw,160px)}.hero-v2 .kicker{font-size:9px;margin-bottom:28px;gap:12px}.hero-statement{display:flex;gap:30px;align-items:end;margin-top:28px;min-width:0}.hero-statement .hero-title{font-size:29px;flex:1}.hero-statement>p:last-child{font-size:10px;flex:1;margin:0;padding-bottom:2px}.hero-render{margin:0 calc(-1 * var(--gutter)) 20px}.hero-render img{aspect-ratio:1.34;object-position:54% 50%}.hero-render figcaption{font-size:9px;padding:0 var(--gutter);gap:20px;align-items:start}.hero-render figcaption>a{flex:none;font-size:9px;max-width:80px;text-align:right}.hero-render figcaption>span{max-width:210px}.hero-v2 .hero-bottom{margin-top:25px}.section-intro{grid-template-columns:1fr;gap:25px;margin-bottom:35px}.intro-note{font-size:13px;max-width:480px}.field-intro{grid-template-columns:1fr;gap:35px}.field-photo img{max-height:580px;object-fit:cover;object-position:50% 55%}.field-copy h2{font-size:48px}.field-copy h2 br:first-child{display:none}.field-copy>.lead{font-size:24px}.micro-facts{justify-content:space-between;max-width:400px}.compact-facts>div{grid-template-columns:80px 1fr}.research-triptych{grid-template-columns:1fr;gap:35px}.research-triptych article{display:grid;grid-template-columns:40px 1fr;column-gap:18px}.research-triptych article>.research-symbol{grid-column:1;grid-row:1/6;padding-top:0}.research-triptych article>*:not(.research-symbol){grid-column:2}.research-triptych h3{font-size:27px;margin-bottom:15px}.decision-sketch{gap:8px;font-size:10px}.research-triptych a{margin-top:14px}.cue-score{gap:16px}.cue-score span{font-size:11px}.cue-score small{font-size:9px;line-height:1.6}.hardware-evidence{grid-template-columns:1fr;gap:25px}.hardware-evidence figure img{height:400px}.component-grid{gap:25px}.component-grid h3{font-size:25px}.component-grid p{font-size:10px}.mechanical-studies{grid-template-columns:1fr;margin-top:30px;gap:30px}.revision-line{gap:15px;align-items:start;flex-direction:column;margin-top:35px}.revision-line>span{transform:rotate(90deg);margin:0 0 0 25px;font-size:24px}.revision-line>div{display:grid;grid-template-columns:1fr 1fr;gap:6px 25px;width:100%;align-items:center}.revision-line small{grid-column:1/-1}.revision-line strong{font-size:26px;margin:0}.revision-line p{font-size:11px}.model-spread{grid-template-columns:1fr;gap:40px;margin-top:40px}.forest-panel svg{max-width:500px;margin:25px 0 5px}.code-pair{grid-template-columns:1fr;gap:22px;margin-top:35px}.code-card pre{font-size:10px}.code-caption{font-size:8px}.feature-key span{font-size:11px}.guard-panel{grid-template-columns:1fr;gap:25px;margin-top:40px}.guard-score{padding:20px 12px}.guard-score>div{font-size:8px}.guard-score>div>span{width:76px}.guard-score .motor-block,.guard-score .mask-block{width:31%}.guard-score .recovery-block{width:21%}.quality-row{font-size:9px;gap:13px 20px}.quality-row>span{width:100%}.technical-chart{margin-inline:calc(-1 * var(--gutter))}.technical-chart figcaption{padding:0 var(--gutter) 18px;font-size:9px}.three-notes{grid-template-columns:1fr;gap:25px;margin-top:26px}.three-notes h3{font-size:26px;margin:12px 0}.recorder-spread{grid-template-columns:1fr;gap:30px}.recorder-spread figure{margin-inline:-10px}.numbered-notes article{padding:22px 0}.numbered-notes h3{font-size:26px}.link-diagram{padding:25px 15px;margin-top:35px}.link-devices{gap:12px;margin-top:28px}.device-node{padding:14px 8px;min-width:0}.device-node small{font-size:8px}.device-node strong{font-size:38px}.device-node>span{font-size:8px;text-align:center}.peer-line{flex:.8}.peer-line span{font-size:10px}.peer-line small{font-size:8px}.debug-links{font-size:9px;gap:15px}.host-node small{font-size:8px}.link-diagram>.footnote{font-size:10px}.recording-workflow{margin:40px 0}.recording-workflow ol{grid-template-columns:1fr;gap:23px}.recording-workflow li{display:grid;grid-template-columns:95px 1fr;gap:24px;padding:20px 0 0;align-items:start}.recording-workflow li>span{font-size:11px;margin:0}.recording-workflow kbd{text-align:center;font-size:11px;padding:7px 12px}.session-spread{grid-template-columns:1fr;gap:30px}.file-tree>div{flex-wrap:nowrap}.file-tree code{font-size:10px}.file-tree span{font-size:9px;text-align:right}.clock-ledger{grid-template-columns:1fr;gap:20px}.clock-ledger>div{display:grid;grid-template-columns:1fr 1.3fr;gap:20px;align-items:baseline}.clock-ledger b{font-size:19px}.clock-ledger span{font-size:10px;margin:0}.safeguard-grid{grid-template-columns:1fr;gap:20px}.replay-story{grid-template-columns:1fr;gap:32px}.replay-story h3{font-size:33px}.window-example{gap:24px}.failure-matrix{margin-top:38px}.failure-header{display:none}.failure-matrix article{grid-template-columns:1fr;gap:16px;padding:25px 0}.failure-matrix h3{font-size:29px}.failure-matrix article>p:last-child{border-left:2px solid var(--cobalt);padding-left:15px;color:var(--ink)}.result-strip{grid-template-columns:1fr;gap:25px;margin-top:28px}.result-strip article{display:grid;grid-template-columns:90px 1fr;gap:20px}.result-strip strong{font-size:50px}.result-strip h3{font-size:25px;margin-top:8px}.result-strip p{font-size:11px}.study-grid{grid-template-columns:1fr 1fr;gap:30px 25px}.study-grid h3{font-size:28px}.study-grid p{font-size:11px}.study-grid small{font-size:9px;line-height:1.6}.making-v2 .board-figure img{aspect-ratio:1.35;object-fit:contain}.making-v2 .board-switch{gap:22px}.making-v2 .board-switch button{font-size:11px}}
@media print{.hero-v2{display:block;padding:0}.hero-heading{display:flex;margin-bottom:25px}.hero-v2 h1{font-size:90px}.hero-statement .hero-title{font-size:25px}.hero-render{margin:0}.hero-render img{max-height:420px;object-fit:contain}.field-intro,.section-intro,.model-spread,.session-spread,.recorder-spread,.replay-story{display:block}.field-photo{max-width:350px;float:right;margin:0 0 20px 30px}.hero-v2 .kicker,.hero-statement>p:last-child,.hero-render figcaption{color:#253b60}.code-card{border:1px solid #809cc5;background:#e6edf5;break-inside:avoid}.code-card pre,.code-caption,.code-caption>span:last-child{color:#0b1426}.code-card b{color:#0b1426}.forest-panel svg{background:#0b1426;max-width:450px}.guard-score{background:#0b1426}.guard-score>p{color:#c4d8f2!important}.study-grid,.three-notes{gap:20px}.technical-chart{break-inside:avoid}.failure-matrix article{break-inside:avoid}.quality-row b{color:#2558c5}.field-copy h2{font-size:32pt}.signal-chain{margin-bottom:30px}.model-spread,.guard-panel,.code-pair{margin-top:30px}.recording-workflow{break-inside:avoid}.light-code pre{font-size:9pt}.revision-line strong{font-size:20pt}.result-strip strong{font-size:40pt}}
.making-v2 .board-figure img{aspect-ratio:9/7;object-fit:contain;background:#e8edf4;height:auto;max-height:760px}.mechanical-studies img{aspect-ratio:auto;height:470px;object-fit:contain;background:#e8edf4}.secondary-studies img{height:330px}.technical-chart .zoom-button>img{width:100%;height:auto}.technical-chart .zoom-button>span{opacity:1}.feature-panel,.forest-panel,.code-pair>*,.session-spread>*,.recorder-spread>*{min-width:0}.light-code .code-caption{flex-wrap:wrap}
@media(max-width:760px){.mechanical-studies img{height:auto;max-height:520px}.secondary-studies img{height:auto}.making-v2 .board-figure img{aspect-ratio:9/7}.code-card pre{font-size:9px}.field-copy h2 br:first-child{display:initial}}
.training-loop{margin-top:40px;border-top:1px solid #ffffff25;padding-top:28px}.training-loop ol{list-style:none;padding:0;display:grid;grid-template-columns:repeat(5,1fr);gap:25px}.training-loop li{position:relative;border-left:1px solid #5cd5e855;padding-left:16px}.training-loop li:not(:last-child):after{content:'→';position:absolute;right:0;top:1px;color:#5688cd}.training-loop b{font:23px var(--display)}.training-loop li>span{font-size:10px;line-height:1.8;color:#a0b8d9;display:block;margin-top:8px;max-width:150px}.training-loop>.footnote{margin-top:25px;font-size:10px}.training-loop .footnote a{color:var(--signal-blue);white-space:nowrap}
@media(max-width:760px){.training-loop ol{grid-template-columns:1fr 1fr;gap:25px 20px}.training-loop b{font-size:24px}.training-loop li>span{font-size:10px}.training-loop li:after{display:none}}
.study-grid article{min-width:0}
@media(max-width:360px){.study-grid{grid-template-columns:1fr}.study-grid article{display:grid;grid-template-columns:25px 1fr;column-gap:16px}.study-grid article>span{grid-row:1/4;padding-top:10px}.study-grid h3{margin:0 0 12px;font-size:30px}.study-grid small{margin-top:12px;grid-column:2}.study-grid p{grid-column:2}}