:root{--paper:#f5f6f4;--white:#fff;--ink:#262e34;--muted:#768087;--line:#dfe4e5;--blue:#456b91;--pale:#edf3f8;--radius:18px;font-family:Inter,"Segoe UI","Microsoft YaHei",sans-serif;color:var(--ink);background:var(--paper);font-synthesis:none}
*{box-sizing:border-box}body{margin:0}button,a,select{-webkit-tap-highlight-color:transparent}button,select{font:inherit}button,a{touch-action:manipulation}button{cursor:pointer;color:inherit}a{color:inherit;text-decoration:none}button:disabled,select:disabled{opacity:.4;cursor:default}button:focus-visible,a:focus-visible,select:focus-visible,canvas:focus-visible{outline:3px solid #8fb7d9;outline-offset:4px}button{border:0;background:none}button[hidden],[hidden]{display:none!important}
.site-header{max-width:1500px;margin:auto;padding:29px 48px 24px;display:flex;align-items:center;justify-content:space-between;border-bottom:1px solid var(--line)}.brand{display:flex;align-items:center;gap:13px;letter-spacing:1.5px;font-size:16px}.brand-mark{width:43px;height:43px;display:grid;place-items:center;background:#2e3941;color:#fff;border-radius:11px;font-size:28px;letter-spacing:-2px;padding-right:3px}.brand b{font-weight:400;color:#839098}.brand small{display:block;font-size:10px;letter-spacing:2px;color:var(--muted);margin-top:6px}.header-link{font-size:12px;color:#617486;display:flex;gap:19px;align-items:center}.header-link:hover{color:var(--blue)}
main{max-width:1400px;margin:auto;padding:0 48px}.introduction{display:flex;align-items:center;justify-content:space-between;padding:45px 0 35px;gap:32px}.eyebrow{font-size:9px;font-weight:600;letter-spacing:2.5px;color:#8a959b;margin:0 0 13px}h1{font-size:35px;font-weight:500;letter-spacing:-1.2px;line-height:1.4;margin:0}.intro-copy{font-size:13px;color:var(--muted);margin:11px 0 0;line-height:1.8}.model-spec{padding-left:28px;border-left:1px solid var(--line);min-width:235px}.model-spec strong{font-size:13px;font-weight:500}.model-spec p{font-size:11px;color:var(--muted);margin:9px 0 0}.model-spec p span{padding:0 8px;color:#aeb7bc}.model-spec .review-state{display:flex;align-items:center;gap:6px;color:var(--blue);font-size:10px;margin-top:13px}.review-state i{width:5px;height:5px;border-radius:50%;background:#7e9cba}
.workspace{display:grid;grid-template-columns:minmax(0,1fr) 286px;gap:20px;align-items:start}.model-panel,.reference-panel{background:var(--white);border:1px solid var(--line);border-radius:var(--radius);overflow:hidden}.panel-toolbar{height:64px;display:flex;justify-content:space-between;align-items:center;padding:0 23px;border-bottom:1px solid #edf0f1}.panel-heading{display:flex;align-items:center;gap:10px}.small-number{font-size:9px;color:#8b99a3;font-variant-numeric:tabular-nums}.panel-heading h2{font-size:13px;letter-spacing:.2px;margin:0;font-weight:500}.quiet-button{font-size:11px;border:1px solid transparent;border-radius:7px;padding:8px 10px;white-space:nowrap}.quiet-button:hover:not(:disabled){background:#f1f5f8;color:var(--blue)}.quiet-button[aria-pressed=true]{background:var(--pale);color:var(--blue)}.rotate-symbol{display:inline-block;font-size:17px;vertical-align:-1px;margin-right:4px}
.model-stage{height:574px;position:relative;background:#f3f6f7;isolation:isolate}.model-stage canvas{width:100%;height:100%;display:block;touch-action:none;cursor:grab}.model-stage canvas:active{cursor:grabbing}.stage-topline,.stage-bottomline{position:absolute;left:23px;right:23px;display:flex;align-items:center;justify-content:space-between;gap:16px;pointer-events:none}.stage-topline{top:19px}.stage-tag{font-size:8px;letter-spacing:1.4px;color:#8998a4}.height-mark{font-size:20px;font-weight:300;color:#8b9aa6}.height-mark small{font-size:10px}.stage-bottomline{bottom:16px;color:#8b98a1;font-size:10px}.stage-reset{pointer-events:auto;font-size:10px;color:#5f778a;padding:6px 8px;border-radius:5px;background:#ffffffb3}.stage-reset:hover{background:#fff}.loading-state{position:absolute;inset:0;background:#f3f6f7eb;display:flex;flex-direction:column;align-items:center;justify-content:center;z-index:3;padding:30px;text-align:center}.loading-state strong{font-size:13px;font-weight:500;letter-spacing:.5px}.loading-state p{color:var(--muted);font-size:11px;line-height:1.8}.loading-state button{padding:9px 19px;font-size:12px;background:var(--blue);color:#fff;border-radius:7px;margin-top:8px}.loading-ring{width:25px;height:25px;border:2px solid #dbe4eb;border-top-color:#6e91af;border-radius:50%;animation:spin 1s linear infinite;margin-bottom:17px}.loading-state.error .loading-ring{animation:none;border-color:#c6a49c;border-radius:6px;transform:rotate(45deg);width:16px;height:16px}.loading-state.error strong{color:#8c665f}@keyframes spin{to{transform:rotate(360deg)}}
.angle-bar{display:flex;align-items:center;padding:14px 23px;gap:24px;border-top:1px solid #edf0f1}.control-label,.parts-bar label{font-size:10px;color:#8a959d;white-space:nowrap}.angle-buttons{display:flex;gap:6px;flex-wrap:wrap}.angle-buttons button,.reference-angles button{font-size:11px;color:#86929a;padding:7px 14px;border-radius:6px;border:1px solid transparent}.angle-buttons button:hover:not(:disabled),.reference-angles button:hover{background:#f4f7fa;color:var(--blue)}.angle-buttons button.active,.reference-angles button.active{border-color:#d8e4ee;background:#f0f5f9;color:var(--blue)}.parts-bar{display:flex;align-items:center;gap:10px;padding:0 23px 15px;flex-wrap:wrap}.parts-bar label{margin-right:5px}.parts-bar select{height:33px;min-width:138px;max-width:190px;padding:0 28px 0 10px;border-radius:6px;border:1px solid var(--line);background:#fff;color:#566774;font-size:11px}.parts-divider{height:20px;width:1px;background:var(--line);margin:0 3px}.primary-button{padding:9px 13px;border-radius:6px;background:var(--blue);color:#fff;font-size:11px;white-space:nowrap}.primary-button:hover:not(:disabled){background:#355b80}.scope-note{font-size:10px;line-height:1.8;color:#89939a;background:#fafbfb;margin:0;padding:12px 23px;border-top:1px solid #edf0f1}.scope-note>span{display:inline-grid;place-items:center;border:1px solid #a6b2bb;width:12px;height:12px;border-radius:50%;font-size:8px;margin-right:6px}
.reference-panel{padding:22px}.reference-panel>.panel-heading{margin-bottom:19px}.original-badge{margin-left:auto;font-size:9px;color:#8293a0;border:1px solid #e1e7eb;padding:3px 5px;border-radius:3px}.reference-image{display:block;position:relative;width:100%;aspect-ratio:.8;padding:0;background:#edf0f0;border-radius:10px;overflow:hidden}.reference-image img{display:block;width:100%;height:100%;object-fit:cover;object-position:50% 50%;transition:transform .35s}.reference-image:hover img{transform:scale(1.025)}.reference-image>span{position:absolute;right:10px;bottom:10px;background:#fffffff0;border-radius:5px;font-size:10px;color:#587085;padding:6px 8px}.reference-image>span>span{margin-left:9px}.reference-caption{display:flex;align-items:center;justify-content:space-between;margin-top:16px}.reference-caption h3{font-size:13px;font-weight:500;margin:0}.reference-caption>span{font-size:9px;color:#93a0a9;font-variant-numeric:tabular-nums}.reference-angles{display:flex;gap:2px;justify-content:space-between;margin-top:16px}.reference-angles button{font-size:10px;padding:6px 9px}.reference-note{font-size:11px;color:#89949c;line-height:1.9;margin:16px 0 20px;min-height:42px}.gallery-link{display:flex;align-items:center;justify-content:space-between;font-size:11px;color:#587691;border-top:1px solid var(--line);padding-top:17px}.next-step{border-top:1px solid var(--line);padding-top:23px;margin-top:24px}.next-step .eyebrow{font-size:8px;letter-spacing:1.8px}.next-step p{font-size:11px;color:#89949c;line-height:1.9;margin:0}
.download-row{display:flex;justify-content:space-between;align-items:center;gap:20px;padding:24px 0 32px;color:#89949a;font-size:11px}.download-row>div{display:flex;gap:26px;flex-wrap:wrap}.download-row a{color:#647d91;font-size:10px;display:flex;gap:13px}.download-row a:hover{text-decoration:underline}footer{max-width:1500px;margin:auto;padding:25px 48px 28px;border-top:1px solid var(--line);display:flex;justify-content:space-between;gap:20px;font-size:9px;letter-spacing:.8px;color:#9aa4aa}
dialog{width:min(1200px,94vw);max-height:94vh;padding:0;border:1px solid #e0e5e8;border-radius:14px;background:#f5f6f4;color:var(--ink);box-shadow:0 20px 90px #25374833}dialog::backdrop{background:#182a3b8c;backdrop-filter:blur(5px)}.dialog-toolbar{padding:17px 24px;display:flex;justify-content:space-between;align-items:center;background:white;border-bottom:1px solid var(--line)}.dialog-toolbar h2{font-size:14px;font-weight:500;margin:0}.dialog-toolbar p{font-size:10px;color:var(--muted);margin:6px 0 0}.dialog-toolbar button{font-size:26px;line-height:1;width:36px;height:36px;border-radius:50%;background:#f4f6f7;color:#7c8a95}.dialog-image-wrap{display:flex;justify-content:center;align-items:center;padding:12px;min-height:160px}.dialog-image-wrap img{display:block;max-width:100%;max-height:72vh;object-fit:contain}.dialog-hint{font-size:10px;color:#89939b;margin:0;padding:3px 24px 15px}.script-note{padding:20px;text-align:center}
@media(min-width:1500px){.model-stage{height:620px}}@media(max-width:1100px){main{padding:0 28px}.site-header{padding:24px 28px}.workspace{grid-template-columns:minmax(0,1fr) 250px;gap:14px}.reference-panel{padding:18px}.model-stage{height:535px}.parts-bar{gap:6px}.parts-bar select{min-width:122px;max-width:145px}.parts-divider{display:none}.quiet-button{padding:8px}.reference-angles button{padding:6px}.introduction{padding:34px 0 28px}.download-row>div{gap:17px}}
@media(max-width:780px){.site-header{padding:20px}.brand{font-size:13px;gap:10px}.brand-mark{width:37px;height:37px;font-size:25px}.brand small{font-size:8px;letter-spacing:1px}.header-link{font-size:10px;gap:8px}main{padding:0 18px}.introduction{padding:29px 0 24px;align-items:flex-start;gap:15px}h1{font-size:27px;letter-spacing:-.8px}.eyebrow{font-size:8px;letter-spacing:1.7px;margin-bottom:10px}.intro-copy{font-size:11px;max-width:250px}.model-spec{min-width:0;padding-left:14px;margin-top:4px}.model-spec strong{font-size:11px}.model-spec p{font-size:9px;line-height:1.8}.model-spec p span{padding:0 4px}.workspace{grid-template-columns:1fr}.model-stage{height:min(69vh,580px);min-height:400px}.panel-toolbar{height:56px;padding:0 18px}.stage-topline,.stage-bottomline{left:18px;right:18px}.stage-tag{font-size:7px;letter-spacing:.9px}.height-mark{font-size:17px}.stage-bottomline{font-size:9px;gap:4px}.angle-bar{padding:12px 18px;gap:18px}.angle-buttons{gap:2px}.angle-buttons button{font-size:10px;padding:7px 12px}.parts-bar{padding:0 18px 14px;gap:6px}.parts-bar label{margin-right:3px}.parts-bar select{min-width:130px;max-width:150px}.parts-bar .quiet-button{font-size:10px}.primary-button{font-size:10px;padding:9px 10px}.scope-note{padding:11px 18px;font-size:9px}.reference-panel{display:grid;grid-template-columns:145px minmax(0,1fr);column-gap:20px;padding:18px}.reference-panel>.panel-heading{grid-column:1/-1;margin-bottom:16px}.reference-image{grid-row:2/6;aspect-ratio:.8}.reference-caption{margin-top:0;height:24px}.reference-angles{margin-top:8px;align-items:center}.reference-angles button{padding:6px;font-size:9px}.reference-note{font-size:10px;margin:8px 0 12px;min-height:0}.gallery-link{padding-top:11px;font-size:10px}.next-step{grid-column:1/-1;margin-top:17px;padding-top:14px;display:flex;align-items:center;gap:20px}.next-step .eyebrow{flex-shrink:0;margin:0}.next-step p{font-size:10px}.download-row{align-items:flex-start;padding:22px 1px;gap:14px}.download-row>span{font-size:10px;white-space:nowrap}.download-row>div{justify-content:flex-end;gap:13px 20px}.download-row a{font-size:9px;gap:7px}footer{padding:20px;letter-spacing:0;font-size:8px}.dialog-toolbar{padding:14px 16px}.dialog-hint{padding:3px 16px 13px}}
@media(max-width:430px){.introduction{display:block}.model-spec{display:flex;align-items:center;gap:10px;flex-wrap:wrap;border:0;padding:15px 0 0;margin:0}.model-spec p,.model-spec .review-state{margin:0}.model-spec strong{font-size:10px}.intro-copy{max-width:none}.model-spec .review-state{margin-left:auto;font-size:9px}.parts-bar{gap:5px}.parts-bar label{font-size:9px}.parts-bar select{min-width:115px;max-width:125px}.parts-bar .quiet-button{padding:8px 6px}.reference-panel{grid-template-columns:122px minmax(0,1fr);column-gap:14px}.reference-caption{display:block;height:auto}.reference-caption h3{font-size:12px}.reference-caption>span{font-size:8px;display:block;margin-top:4px}.reference-angles{gap:0;margin-top:5px}.reference-angles button{padding:5px 6px}.reference-note{line-height:1.7;font-size:9px}.gallery-link{font-size:9px}.next-step{display:block}.next-step p{margin-top:7px}.download-row{display:block}.download-row>div{justify-content:flex-start;margin-top:14px}.stage-bottomline #selectionHint{max-width:65%;line-height:1.7}.angle-buttons button{padding:7px 10px}footer{display:block;line-height:1.8}footer>span{display:block}}
@media(prefers-reduced-motion:reduce){*,*::before,*::after{scroll-behavior:auto!important;animation:none!important;transition:none!important}}

/* Whole robot component workbench */
.site-header{padding-top:18px;padding-bottom:18px}.introduction{padding:26px 0 24px}h1{font-size:32px}.workspace{grid-template-columns:minmax(0,1fr) 310px}.model-stage{height:620px}.panel-toolbar{gap:6px}.panel-toolbar .panel-heading{margin-right:auto}.panel-toolbar>.quiet-button{font-size:11px}.parts-sidebar{border:1px solid var(--line);border-radius:18px;background:white;overflow:hidden}.catalogue-heading{padding:22px 22px 12px}.catalogue-heading .eyebrow{margin-bottom:9px}.catalogue-heading h2{font-size:20px;font-weight:500;margin:0}.catalogue-heading p{font-size:11px;color:var(--muted);margin:9px 0 0}.search-wrap{display:block;margin:0 18px}.search-wrap>span{display:none}.search-wrap input{font:inherit;font-size:11px;width:100%;padding:12px;border:1px solid #dde5e9;border-radius:8px;outline-color:#88aeca;background:#f7f9fa}.catalogue-hint{font-size:10px;color:#82919b;margin:12px 22px}.part-catalogue{max-height:540px;overflow:auto;padding:0 13px 14px;scrollbar-width:thin}.part-category h3{font-size:10px;color:#8899a5;font-weight:500;letter-spacing:1px;padding:12px 9px 6px;margin:0}.catalogue-part{width:100%;display:flex;align-items:center;justify-content:space-between;text-align:left;gap:8px;border-radius:7px;padding:10px;font-size:11px;margin:2px 0}.catalogue-part:hover{background:#f1f6fa}.catalogue-part small{font-size:9px;color:#96a2ac;white-space:nowrap}.catalogue-part.selected{background:#e9f2f9;color:#285a82}.catalogue-part[aria-pressed=true] small{color:#327b9d}.catalogue-part[aria-pressed=true] small::before{content:'• ';color:#449dba}.selection-card{display:flex;align-items:center;justify-content:space-between;gap:14px;padding:15px 23px;background:#f7fafc;border-top:1px solid #e7eef2}.selection-card strong{font-size:12px;font-weight:500}.selection-card p{font-size:10px;color:#85949f;margin:6px 0 0;line-height:1.7}.selection-card>span{font-size:10px;color:#62839a;white-space:nowrap}.reference-details{border-top:1px solid var(--line);font-size:11px;color:#657d8f}.reference-details summary{cursor:pointer;padding:17px 22px}.compact-reference{border:0;border-radius:0;padding:0 20px 20px}.compact-reference>.panel-heading{display:none}.compact-reference .reference-image{aspect-ratio:1.15}.compact-reference .reference-note{margin-bottom:12px}.part-labels,.label-leaders{position:absolute;inset:0;width:100%;height:100%;pointer-events:none}.label-leaders{overflow:visible;z-index:1}.label-leaders path{stroke:#93aabcb0;fill:none;stroke-width:.7}.part-label{position:absolute;pointer-events:auto;padding:5px 8px;background:#fffffff0;border:1px solid #d7e1e8;border-radius:5px;white-space:nowrap;font-size:9px;color:#597589;box-shadow:0 2px 8px #465d7010;z-index:2}.part-label.selected{border-color:#5089b4;color:#285e88;background:#eef7ff}.part-label.separated::before{content:'• ';color:#50a2b6}.stage-topline,.stage-bottomline{z-index:3}.header-link{white-space:nowrap}.site-header nav{flex-wrap:wrap;justify-content:flex-end}.stage-bottomline{background:#f3f6f7c9;border-radius:6px;padding:3px 5px}
@media(min-width:1500px){.model-stage{height:650px}.part-catalogue{max-height:560px}}
@media(max-width:1100px){.workspace{grid-template-columns:minmax(0,1fr) 270px}.model-stage{height:590px}.part-label{font-size:8px;padding:4px}.parts-bar{padding-left:16px;padding-right:16px}}
@media(max-width:780px){.workspace{grid-template-columns:1fr}.site-header nav{gap:10px!important;max-width:45%}.header-link{font-size:9px}.introduction{padding-top:25px}.model-stage{height:65vh;min-height:490px}.part-catalogue{max-height:350px}.catalogue-heading{padding:18px 20px 12px}.parts-sidebar .compact-reference{display:block}.compact-reference .reference-image{max-height:260px;aspect-ratio:auto}.part-label{max-width:120px;overflow:hidden;text-overflow:ellipsis;font-size:8px}.selection-card{padding:13px 18px}.scope-note{font-size:9px}.parts-bar .primary-button{font-size:10px}.intro-copy{font-size:11px}}

.assembly-actions{display:flex;align-items:center;gap:9px;padding:10px 22px;border-bottom:1px solid #e8edf1;background:#fbfcfd}.assembly-actions button{font-size:11px;padding:8px 13px;background:#edf3f8;border:1px solid #dde7ef;color:#496d8b;border-radius:7px}.assembly-actions button:first-child{background:#405f7a;color:white;border-color:#405f7a}.assembly-actions button:hover{filter:brightness(.96)}.assembly-actions>span{margin-left:auto;color:#91a0ac;font-size:9px}.model-stage{background:#f3f6f7}.model-panel{box-shadow:0 8px 34px #273c4c06}.part-label{box-shadow:0 2px 10px #3c5a6d10;font-weight:400}.selection-card{border-top:1px solid #e2eaf0}.catalogue-part{font-size:11px;padding:10px 11px}.catalogue-heading{padding-top:22px}.parts-sidebar{box-shadow:0 8px 34px #273c4c04}@media(max-width:780px){.assembly-actions{padding:10px 14px;gap:7px}.assembly-actions>span{display:none}.assembly-actions button{font-size:10px}.model-stage{min-height:490px}}

.assembly-actions{flex-wrap:wrap;gap:7px}.assembly-actions button{padding:8px 10px;font-size:10px}.assembly-actions #servoLabels,.assembly-actions #boardLabels{background:#fff;color:#52768f}.assembly-actions #feetStudy{background:#f0f5f8}
.walk-panel{padding:22px 24px;background:#f8faf9;border-top:1px solid #e6eceb;border-bottom:1px solid #e6eceb;color:#344c58}.walk-heading{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-bottom:16px}.walk-heading .eyebrow{font-size:9px;color:#819397;letter-spacing:.13em}.walk-heading h3{font-size:17px;font-weight:500;margin:7px 0 0}.walk-state{font-size:11px;background:#e5efec;color:#447365;padding:5px 11px;border-radius:20px}.walk-controls{display:flex;align-items:center;flex-wrap:wrap;gap:12px}.walk-controls label{flex:1;min-width:110px;font-size:11px}.walk-controls output{float:right;font-variant-numeric:tabular-nums}.walk-panel input[type=range]{accent-color:#527c86;cursor:pointer;width:100%;margin:10px 0 0}.walk-phase{display:flex;gap:16px;align-items:center;margin-top:16px}.walk-phase label{font-size:11px;white-space:nowrap}.walk-phase output{display:inline-block;min-width:35px;text-align:right;font-variant-numeric:tabular-nums}.walk-phase input{flex:1;margin:0!important;min-width:0}.walk-panel p{font-size:11px;color:#819093;line-height:1.65;margin:12px 0 0}.joint-details{border-top:1px solid #e2e9e7;margin-top:14px;padding-top:12px}.joint-details summary{font-size:12px;cursor:pointer}.joint-angle-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:12px 24px;margin-top:15px}.joint-angle{display:grid;grid-template-columns:1fr auto;align-items:center;font-size:11px;min-width:0}.joint-angle input{grid-column:1/-1}.joint-angle output{font-variant-numeric:tabular-nums;color:#3a7580}.walk-panel .walk-note{font-size:10px;color:#8a989a}@media(max-width:600px){.walk-panel{padding:18px 16px}.walk-controls label{flex-basis:35%}.joint-angle-grid{gap:14px}.walk-heading h3{font-size:16px}}
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.code-examples button[aria-pressed=true]{background:#e1eeea;border-color:#acc8be;color:#365d52}

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.parts-sidebar .code-examples{grid-template-columns:repeat(2,minmax(0,1fr))}