.lab-page{max-width:1280px;margin:auto;padding:36px 24px 60px}.lab-page h1{letter-spacing:-.035em;margin:12px 0 16px;font-size:clamp(28px,3.4vw,44px);line-height:1.15}.lab-page h2{margin:0 0 12px;font-size:21px;line-height:1.4}.lab-page h3{margin:8px 0;font-size:20px;line-height:1.4}.lab-page p{margin:8px 0 16px}.lab-eyebrow{color:var(--ice);letter-spacing:.06em;font-size:12px;font-weight:700}.lab-heading{justify-content:space-between;align-items:center;gap:32px;display:flex}.lab-heading>div{max-width:760px}.lab-case{flex-direction:column;gap:6px;min-width:250px;font-size:14px;font-weight:600;display:flex}.lab-case small{color:var(--text-dim);font-size:12px;font-weight:400}.lab-case select{border:1px solid var(--line);width:100%;color:var(--text);background:var(--surface);border-radius:8px;padding:12px;font-size:14px}.lab-scope{border:1px solid var(--line);background:var(--hint-warm-bg);border-radius:10px;margin:12px 0 26px;padding:14px 18px;font-size:14px;line-height:1.6}.lab-layout{grid-template-columns:minmax(0,1.35fr) minmax(0,1fr);align-items:start;gap:24px;display:grid}.lab-view,.lab-work{border:1px solid var(--line);background:var(--surface);border-radius:14px;min-width:0;overflow:hidden}.lab-section-head{justify-content:space-between;align-items:center;gap:12px;padding:18px 20px;display:flex}.lab-section-head h2{margin:0;font-size:18px}.lab-power{border:1px solid var(--caution-line);background:var(--caution-bg);color:var(--caution-text);white-space:nowrap;border-radius:999px;padding:6px 10px;font-size:12px}.lab-power.off{background:var(--hint-ok-bg);color:var(--ok);border-color:var(--hint-ok-line)}.lab-model{background:var(--surface-sunken);height:430px;position:relative;overflow:hidden}.lab-model canvas{touch-action:none;width:100%;height:100%;display:block}.lab-fallback{text-align:center;background:var(--surface-sunken);flex-direction:column;justify-content:center;align-items:center;padding:32px;display:flex;position:absolute;inset:0}.lab-view-controls{flex-wrap:wrap;gap:6px;padding:14px 18px 0;display:flex}.lab-page button{font:inherit;border:1px solid var(--line);min-height:44px;color:var(--text);background:var(--bg);cursor:pointer;border-radius:8px;padding:10px 14px;font-size:14px;font-weight:600;line-height:1.5}.lab-page button:hover:not(:disabled){border-color:var(--ice);background:var(--hint-warm-bg)}.lab-page button:disabled{opacity:.48;cursor:default}.lab-instruction{color:var(--text-dim);padding:0 18px;font-size:13px}.lab-parts{grid-template-columns:repeat(2,minmax(0,1fr));gap:8px;padding:0 18px 18px;display:grid}.lab-parts button{text-align:left;min-width:0}.lab-parts strong,.lab-parts span{display:block}.lab-parts span{color:var(--text-dim);margin-top:3px;font-size:12px;font-weight:400}.lab-parts button[aria-pressed=true]{border:2px solid var(--ice);background:var(--hint-warm-bg);padding:9px 13px}.lab-operating{border-top:1px solid var(--line);flex-wrap:wrap;gap:8px 20px;padding:14px 18px;font-size:13px;display:flex}.lab-selected{border-bottom:1px solid var(--line);padding:0 20px 20px}.lab-selected>span{color:var(--text-dim);font-size:12px;font-weight:600}.lab-selected p{font-size:14px}.lab-page a{color:var(--ice);text-underline-offset:3px}.lab-selected a{font-size:14px}.lab-actions{flex-direction:column;gap:10px;padding:20px;display:flex}.lab-actions p{margin:0;font-size:14px}.lab-page .lab-primary{background:var(--fire);color:var(--bg);border-color:var(--fire)}.lab-page .lab-primary:hover:not(:disabled){background:var(--fire);color:var(--bg)}.lab-page .lab-repair{background:var(--caution-bg);color:var(--caution-text);border-color:var(--caution-line)}.lab-caution{border:1px solid var(--caution-line);background:var(--caution-bg);color:var(--caution-text);border-radius:8px;padding:12px;line-height:1.6}.lab-prep{background:var(--surface-sunken);border-radius:10px;margin:0 20px 20px;padding:18px}.lab-prep h3{margin:0;font-size:16px}.lab-prep ol{padding-left:22px;font-size:13px;line-height:1.7}.lab-prep li.done{color:var(--ok);font-weight:600}.lab-prep li.done:after{content:" ✓"}.lab-prep button{width:100%}.lab-ready{color:var(--ok);font-size:14px}.lab-result{border:1px solid var(--hint-warm-line);border-left:4px solid var(--ice);background:var(--hint-warm-bg);border-radius:12px;margin-top:24px;padding:24px}.lab-result h2{font-size:18px}.lab-result p{margin:0;line-height:1.8}.lab-verification{background:var(--surface);border:1px solid var(--line);border-left:4px solid var(--ok);border-radius:12px;grid-template-columns:minmax(0,1.2fr) minmax(0,1fr);gap:28px;margin-top:24px;padding:24px;display:grid}.lab-verify-actions{flex-direction:column;gap:10px;display:flex}.lab-page .lab-verify{background:var(--ok);color:var(--bg);border-color:var(--ok)}.lab-page .lab-verify:hover:not(:disabled){background:var(--ok);color:var(--bg)}.lab-debrief{border:1px solid var(--hint-ok-line);background:var(--hint-ok-bg);border-radius:12px;margin-top:24px;padding:24px}.lab-debrief-links{flex-wrap:wrap;gap:20px;display:flex}.lab-history{background:var(--surface);border:1px solid var(--line);border-radius:10px;margin-top:24px;padding:18px}.lab-history summary{cursor:pointer;min-height:44px;font-weight:600}.lab-history li{margin-bottom:12px;padding-left:8px;font-size:14px}.lab-footer{color:var(--text-dim);margin-top:24px;font-size:13px;line-height:1.8}.lab-skip{z-index:100;background:var(--surface);padding:12px;position:absolute;top:-80px;left:12px}.lab-skip:focus{top:12px}.lab-link{align-items:center;min-height:44px;display:flex}.lab-page button:focus-visible{outline-offset:3px}.lab-page *{overflow-wrap:break-word}@media (max-width:850px){.lab-layout{grid-template-columns:minmax(0,1fr)}.lab-heading{flex-direction:column;align-items:stretch;gap:16px}.lab-case{max-width:420px}.lab-model{height:380px}.lab-verification{grid-template-columns:minmax(0,1fr);gap:12px}}@media (max-width:480px){.lab-page{padding:24px 12px 40px}.lab-model{height:320px}.lab-section-head{flex-wrap:wrap;padding:14px 12px}.lab-parts,.lab-actions{padding:14px 12px}.lab-selected{padding:0 12px 14px}.lab-prep{margin:0 12px 14px;padding:14px}.lab-result,.lab-verification,.lab-debrief{padding:18px}.lab-case{min-width:0}}.lab-model.lab-fallback{position:relative}.lab-work .lab-result{margin:0 20px 20px;padding:16px;font-size:14px}.lab-view{position:sticky;top:82px}.lab-work h3{scroll-margin-top:100px}@media (max-width:850px){.lab-view{position:static}}@media (min-width:851px) and (max-width:1250px){.lab-view{top:138px}.lab-work h3{scroll-margin-top:144px}}