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0;color:var(--muted)}.body-settings{padding:12px 0}.body-settings summary{font-size:13px;margin-bottom:12px}.editor-bottom{padding-top:14px;border-top:1px solid var(--line)}.editor-bottom button,.file-button{font-size:11px;padding:6px 9px;min-height:35px}.file-button{display:inline-flex;align-items:center;border:1px solid var(--line);border-radius:4px;cursor:pointer}.file-button input{width:1px;height:1px;position:absolute;opacity:0}.file-button:focus-within{outline:3px solid var(--accent-bright);outline-offset:3px}.result-panel{position:sticky;top:20px}.solve-intro{font-size:13px;color:var(--muted);line-height:1.8}.solve-button{width:100%;font-size:15px;min-height:52px;letter-spacing:.02em;display:flex}.solver-status{font-size:13px;margin:15px 0;line-height:1.7;border-left:3px solid var(--accent);padding:7px 12px;background:var(--light)}.solver-status.error{border-color:#9f3549;background:#fff0f3;color:#81293b}.route-options{display:flex;gap:8px;flex-wrap:wrap}.route-options 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input{display:block;width:100%;accent-color:var(--accent);min-height:30px;margin:3px 0 8px}.export-row{display:flex;gap:8px;flex-wrap:wrap;margin:12px 0}.export-row button{font-size:11px;min-height:36px}.steps-detail{padding:15px 0;font-size:13px}.route-steps{padding:0;margin:12px 0 0;list-style:none;max-height:270px;overflow:auto}.route-steps li{margin-bottom:4px}.route-steps button{width:100%;text-align:left;font-size:12px;padding:8px 10px;min-height:36px;border-color:transparent}.route-steps button.current{border-color:#c6a2e6;background:#f3e9fc}.result-empty{padding:32px 10px 15px;color:var(--muted)}.result-empty h3{font-size:18px;color:var(--ink);margin:14px 0 8px}.result-empty p{font-size:13px}.empty-mark{font-size:58px;font-weight:900;color:var(--accent);line-height:1}.model-notes{margin:42px 0 20px;display:grid;grid-template-columns:1fr 2fr;gap:44px;border-top:2px solid var(--ink);padding-top:30px}.model-notes h2{font-size:27px;line-height:1.5}.model-grid{display:grid;grid-template-columns:1fr 1fr;gap:20px}.model-grid h3{font-size:15px;margin-bottom:7px}.model-grid p{font-size:12px;color:var(--muted);margin:0}.lab-privacy{font-size:11px;color:var(--muted);margin-bottom:28px}.beta-lab footer{max-width:1440px}.lab-entry{border:2px solid var(--accent);background:#f6effc;padding:23px 26px;margin-top:28px;display:flex;align-items:center;justify-content:space-between;gap:24px}.lab-entry h3{margin:0 0 5px}.lab-entry p{font-size:14px;margin:0;color:var(--muted)}.lab-entry a{white-space:nowrap;text-decoration:none;font-size:13px;font-weight:700}.lab-panel [hidden]{display:none!important}@media(max-width:1000px){.lab-main{padding:0 20px}.lab-panel{padding:18px}.lab-workspace{gap:16px}.inspector-fields{grid-template-columns:1fr 1fr}.lab-intro{gap:30px}.measure-fields{grid-template-columns:1fr 1fr}}@media(max-width:760px){.lab-main{padding:0 14px}.lab-intro{grid-template-columns:1fr;gap:22px;padding:28px 4px}.lab-intro h1{font-size:38px}.lab-intro aside{padding:10px 16px}.lab-workspace{grid-template-columns:1fr}.result-panel{position:static}.lab-panel{padding:16px}.lab-panel h2{font-size:23px}.wall-board svg{max-height:none}.model-notes{grid-template-columns:1fr;gap:20px;padding-top:22px}.model-grid{gap:20px}.model-notes h2{font-size:24px}.lab-entry{flex-direction:column;align-items:flex-start;gap:14px;padding:20px}}@media(max-width:380px){.lab-panel{padding:12px}.lab-tools{gap:4px}.lab-tools button{font-size:11px;padding:6px}.lab-panel h2{font-size:21px}.model-grid{grid-template-columns:1fr}.playback-tools button{font-size:11px}.contact-summary{gap:4px}}@media(prefers-reduced-motion:reduce){.beta-lab *{scroll-behavior:auto!important;transition:none!important}}@media print{.masthead,.lab-tools,.editor-bottom,.playback-tools,.export-row,.solve-button,.lab-intro 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.mobile-preview{display:none}.mobile-preview svg{width:100%;height:auto;display:block}@media(max-width:760px){.mobile-preview{display:block;background:#f5f2f8;border:1px solid var(--line);margin:12px 0}.mobile-preview svg{max-height:470px}}

@media(max-width:760px){#result-content{display:flex;flex-direction:column}#route-options{order:0}#route-overview{order:1}.step-heading{order:2;margin-top:5px;padding-top:10px}.mobile-preview{order:3}.playback-tools{order:4}.step-progress{order:5}.step-reason{order:6}.contact-summary{order:7}.export-row{order:8}.steps-detail{order:9}#result-content>.lab-help:last-child{order:10}}

.scale-summary{padding:8px 10px;background:#f3edf8;border-left:3px solid #b88add;color:#493e55}.solver-status{white-space:pre-line}#empty-traverse{font-size:12px;margin-top:8px}

.arm-posture{border:1px solid #ded5e7;padding:12px;margin:15px 0;background:#fcfaff}.arm-title{font-size:12px;display:block;color:#493e55}.arm-angles{display:grid;grid-template-columns:1fr 1fr;gap:7px;margin:10px 0}.arm-card{background:#f0edf4;padding:7px 10px;display:flex;justify-content:space-between;gap:6px;align-items:center}.arm-card span{font-size:10px;color:#655b70}.arm-card b{font-size:20px;line-height:1.2}.arm-card.extended{background:#eee0fc;color:#6420aa}.arm-posture p{font-size:12px;line-height:1.7;margin:8px 0;color:#493e55}.arm-posture small{display:block;font-size:10px;color:#655b70;line-height:1.7}@media(max-width:760px){.arm-posture{order:7}}