*{box-sizing:border-box;margin:0;padding:0}:root{--bg:#0a0a0a;--surface:#111;--surface2:#1a1a1a;--surface3:#222;--border:#2a2a2a;--border-hover:#3a3a3a;--text:#e0e0e0;--text-dim:#888;--text-muted:#555;--accent:#00d4ff;--accent-hover:#00b8e6;--danger:#f36;--success:#3f8;--warning:#fa0;--radius:6px;--radius-sm:4px}body{background:var(--bg);color:var(--text);-webkit-user-select:none;user-select:none;-webkit-font-smoothing:antialiased;height:100vh;font-family:Inter,-apple-system,BlinkMacSystemFont,Segoe UI,system-ui,sans-serif;font-size:13px;overflow:hidden}#app{grid-template-rows:48px 1fr 28px;grid-template-columns:280px 1fr;height:100vh;display:grid}#topbar{background:var(--surface);border-bottom:1px solid var(--border);z-index:100;grid-column:1/-1;justify-content:space-between;align-items:center;gap:8px;padding:0 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input[type=range]{appearance:none;background:var(--border);border-radius:2px;outline:none;width:100%;height:4px}.field input[type=range]::-webkit-slider-thumb{appearance:none;background:var(--accent);cursor:pointer;border:2px solid var(--bg);border-radius:50%;width:14px;height:14px}.field input[type=range]::-moz-range-thumb{background:var(--accent);cursor:pointer;border:2px solid var(--bg);border-radius:50%;width:14px;height:14px}.field select,.field input[type=text],.field input[type=number]{background:var(--bg);border:1px solid var(--border);width:100%;color:var(--text);border-radius:var(--radius-sm);padding:5px 8px;font-family:inherit;font-size:12px}.field select:focus,.field input:focus{border-color:var(--accent);outline:none}.field-row{gap:8px;display:flex}.field-row .field{flex:1}.surface-item{border-radius:var(--radius-sm);cursor:pointer;border:1px solid #0000;align-items:center;gap:8px;padding:6px 8px;transition:background 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50px}#statusbar{background:var(--surface);border-top:1px solid var(--border);color:var(--text-dim);z-index:100;grid-column:1/-1;align-items:center;gap:16px;padding:0 12px;font-size:11px;display:flex}.status-item{align-items:center;gap:4px;display:flex}.status-dot{background:var(--success);border-radius:50%;width:6px;height:6px}.shortcuts{color:var(--text-dim);font-size:11px;line-height:2}.shortcuts kbd{background:var(--bg);border:1px solid var(--border);color:var(--accent);border-radius:3px;margin-right:4px;padding:1px 6px;font-family:inherit;font-size:10px;display:inline-block}body.fullscreen #app{grid-template-rows:1fr;grid-template-columns:1fr}body.fullscreen #topbar,body.fullscreen #sidebar,body.fullscreen #statusbar{display:none}body.fullscreen #viewport{grid-area:1/1}body.fullscreen #control-overlay{display:none}body.fullscreen .badge{display:none!important}body.fullscreen .zoom-indicator{display:none}body.fullscreen{cursor:none}body.fullscreen *{cursor:none!important}.demo-picker{z-index:100;-webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px);background:#111111e6;border:1px solid #2a2a2a;border-radius:16px;gap:12px;padding:16px 24px;display:flex;position:fixed;bottom:100px;left:50%;transform:translate(-50%)}.demo-option{cursor:pointer;color:#e0e0e0;background:#ffffff0d;border:1px solid #2a2a2a;border-radius:8px;align-items:center;gap:8px;padding:8px 16px;font-size:13px;transition:all .15s;display:flex}.demo-option:hover{color:#fff;background:#00d4ff1a;border-color:#00d4ff}.demo-icon{font-size:18px}::-webkit-scrollbar{width:6px}::-webkit-scrollbar-track{background:0 0}::-webkit-scrollbar-thumb{background:var(--border);border-radius:3px}::-webkit-scrollbar-thumb:hover{background:var(--border-hover)}#onboarding{z-index:10000;pointer-events:none;position:fixed;inset:0}.onboarding-overlay{-webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px);pointer-events:auto;background:#000000d9;justify-content:center;align-items:center;display:flex;position:absolute;inset:0}.onboarding-modal{background:var(--surface);border:1px solid var(--border);border-radius:12px;width:90%;max-width:560px;max-height:85vh;padding:32px;overflow-y:auto;box-shadow:0 24px 80px #0009}.onboarding-progress{justify-content:center;gap:8px;margin-bottom:28px;display:flex}.progress-dot{background:var(--border);border-radius:50%;width:8px;height:8px;transition:all .3s}.progress-dot.active{background:var(--accent);box-shadow:0 0 8px var(--accent)}.onboarding-step{text-align:center}.step-icon{margin-bottom:16px;font-size:48px}.onboarding-step h2{color:var(--text);margin-bottom:8px;font-size:22px;font-weight:700}.step-desc{color:var(--text-dim);margin-bottom:24px;font-size:14px;line-height:1.6}.step-content{text-align:left}.onboarding-actions{border-top:1px solid var(--border);justify-content:space-between;align-items:center;margin-top:28px;padding-top:20px;display:flex}.actions-right{gap:8px;display:flex}.btn-ghost{color:var(--text-dim);cursor:pointer;background:0 0;border:none;padding:6px 12px;font-family:inherit;font-size:12px}.btn-ghost:hover{color:var(--text)}.setup-checklist{flex-direction:column;gap:12px;display:flex}.check-item{background:var(--surface2);border:1px solid var(--border);border-radius:var(--radius);cursor:pointer;align-items:center;gap:12px;padding:12px 16px;transition:all 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var(--border);border-radius:var(--radius);cursor:pointer;color:var(--text);flex-direction:column;align-items:center;gap:4px;padding:16px 12px;font-family:inherit;transition:all .2s;display:flex}.res-btn:hover{border-color:var(--accent)}.res-btn.selected{border-color:var(--accent);background:#00d4ff14}.res-label{color:var(--accent);font-size:16px;font-weight:700}.res-detail{color:var(--text-dim);font-family:monospace;font-size:11px}.res-use{color:var(--text-muted);font-size:10px}.test-guide{flex-direction:column;gap:16px;display:flex}.test-checklist{flex-direction:column;gap:10px;display:flex}.check-label{cursor:pointer;border-radius:var(--radius-sm);align-items:center;gap:10px;padding:8px 12px;font-size:13px;transition:background .1s;display:flex}.check-label:hover{background:var(--surface3)}.check-label input[type=checkbox]{accent-color:var(--accent);width:16px;height:16px}.test-actions{flex-wrap:wrap;gap:8px;display:flex}.surface-type-grid{grid-template-columns:1fr 1fr;gap:10px;display:grid}.surface-type-btn{background:var(--surface2);border:1px solid var(--border);border-radius:var(--radius);cursor:pointer;color:var(--text);flex-direction:column;align-items:center;gap:6px;padding:20px 12px;font-family:inherit;transition:all .2s;display:flex}.surface-type-btn:hover{border-color:var(--accent)}.surface-type-btn.selected{border-color:var(--accent);background:#00d4ff14}.type-icon{font-size:28px}.type-label{font-size:13px;font-weight:600}.type-desc{color:var(--text-dim);text-align:center;font-size:10px}.quick-start{text-align:left;flex-direction:column;gap:16px;display:flex}.qs-step{align-items:flex-start;gap:14px;display:flex}.qs-num{background:var(--accent);color:#000;border-radius:50%;flex-shrink:0;justify-content:center;align-items:center;width:28px;height:28px;font-size:13px;font-weight:700;display:flex}.qs-step strong{margin-bottom:2px;display:block}.qs-step p{color:var(--text-dim);margin:0;font-size:12px;line-height:1.5}.qs-step kbd{background:var(--bg);border:1px solid var(--border);color:var(--accent);border-radius:3px;padding:1px 5px;font-size:10px}#chatbot{z-index:9999;position:fixed;bottom:40px;right:20px}.chatbot-btn{background:var(--accent);color:#000;cursor:pointer;border:none;border-radius:50%;justify-content:center;align-items:center;width:52px;height:52px;transition:all .2s;display:flex;position:relative;box-shadow:0 4px 20px #00d4ff4d}.chatbot-btn:hover{transform:scale(1.1);box-shadow:0 6px 28px #00d4ff66}.chatbot-badge{background:var(--danger);color:#fff;border-radius:50%;justify-content:center;align-items:center;width:18px;height:18px;font-size:10px;font-weight:700;display:flex;position:absolute;top:-4px;right:-4px}.chatbot-window{background:var(--surface);border:1px solid var(--border);border-radius:12px;flex-direction:column;width:380px;height:520px;display:flex;position:absolute;bottom:64px;right:0;overflow:hidden;box-shadow:0 16px 64px #00000080}.chatbot-header{border-bottom:1px solid var(--border);background:var(--surface2);justify-content:space-between;align-items:center;padding:14px 16px;display:flex}.chatbot-title{align-items:center;gap:10px;display:flex}.chatbot-avatar{font-size:24px}.chatbot-name{font-size:13px;font-weight:600}.chatbot-status{color:var(--success);font-size:10px}.chatbot-close{color:var(--text-dim);cursor:pointer;border-radius:var(--radius-sm);background:0 0;border:none;padding:4px 8px;font-size:20px}.chatbot-close:hover{background:var(--surface3);color:var(--text)}.chatbot-messages{flex-direction:column;flex:1;gap:12px;padding:16px;display:flex;overflow-y:auto}.chat-msg{max-width:85%;animation:.2s ease-out msgIn}@keyframes msgIn{0%{opacity:0;transform:translateY(8px)}to{opacity:1;transform:translateY(0)}}.chat-msg.user{align-self:flex-end}.chat-msg.user .msg-content{background:var(--accent);color:#000;border-radius:12px 12px 4px;padding:10px 14px}.chat-msg.assistant .msg-content{background:var(--surface2);border:1px solid var(--border);border-radius:12px 12px 12px 4px;padding:10px 14px;font-size:12px;line-height:1.6}.msg-content strong{color:var(--accent)}.msg-content ul,.msg-content ol{margin:6px 0;padding-left:18px}.msg-content li{margin-bottom:4px}.msg-content kbd{background:var(--bg);border:1px solid var(--border);color:var(--accent);border-radius:3px;padding:1px 5px;font-size:10px}.msg-content table{margin:8px 0}.msg-content td{border-bottom:1px solid var(--border);padding:3px 8px}.msg-content code{background:var(--bg);border-radius:3px;padding:2px 5px;font-size:11px}.chat-welcome p{margin-bottom:8px;font-size:13px;line-height:1.6}.chat-welcome p:first-child{font-weight:600}.quick-actions{flex-wrap:wrap;gap:6px;margin-top:12px;display:flex}.quick-btn{background:var(--surface2);border:1px solid var(--border);color:var(--text);cursor:pointer;border-radius:16px;padding:6px 12px;font-family:inherit;font-size:11px;transition:all .15s}.quick-btn:hover{border-color:var(--accent);color:var(--accent)}.chatbot-input-area{border-top:1px solid var(--border);background:var(--surface2);gap:8px;padding:12px 16px;display:flex}.chatbot-input-area input{background:var(--bg);border:1px solid var(--border);color:var(--text);border-radius:20px;flex:1;padding:8px 12px;font-family:inherit;font-size:12px}.chatbot-input-area input:focus{border-color:var(--accent);outline:none}.chatbot-send{background:var(--accent);color:#000;cursor:pointer;border:none;border-radius:50%;justify-content:center;align-items:center;width:34px;height:34px;transition:all .15s;display:flex}.chatbot-send:hover{transform:scale(1.05)}@media (width<=900px){#app{grid-template-columns:1fr}#sidebar{display:none}.chatbot-window{width:calc(100vw - 40px);right:-16px}}#surface-scanner{z-index:10000;pointer-events:none;position:fixed;inset:0}.scanner-overlay{-webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px);pointer-events:auto;background:#000000d9;justify-content:center;align-items:center;display:flex;position:absolute;inset:0}.scanner-modal{background:var(--surface);border:1px solid var(--border);border-radius:12px;width:90%;max-width:800px;max-height:90vh;overflow-y:auto;box-shadow:0 24px 80px #0009}.scanner-header{border-bottom:1px solid var(--border);justify-content:space-between;align-items:center;padding:20px 24px;display:flex}.scanner-header h2{font-size:18px}.scanner-header p{color:var(--text-dim);font-size:12px}.scanner-close{color:var(--text-dim);cursor:pointer;background:0 0;border:none;padding:4px 8px;font-size:24px}.scanner-body{padding:24px}.camera-viewport,.draw-viewport,.review-viewport{border-radius:var(--radius);background:#000;justify-content:center;align-items:center;min-height:300px;display:flex;position:relative;overflow:hidden}.camera-viewport video,.draw-viewport canvas,.review-viewport canvas{max-width:100%;max-height:400px;display:block}.camera-guide{justify-content:center;align-items:flex-end;padding:16px;display:flex;position:absolute;inset:0}.camera-guide span{color:var(--text);background:#000000b3;border-radius:20px;padding:8px 16px;font-size:12px}.camera-fallback{text-align:center;color:var(--text-dim);padding:40px}.camera-fallback p{margin-bottom:8px}.draw-hint{color:var(--text-dim);background:#000000b3;border-radius:16px;padding:6px 14px;font-size:11px;position:absolute;bottom:12px;left:50%;transform:translate(-50%)}.scanner-actions{justify-content:center;gap:8px;margin-top:16px;display:flex}.scanner-surfaces-list{flex-direction:column;gap:8px;margin-top:16px;display:flex}.scanned-surface-item{background:var(--surface2);border-radius:var(--radius-sm);align-items:center;gap:10px;padding:8px 12px;font-size:12px;display:flex}.scanned-color{border-radius:3px;width:12px;height:12px}#setup-guide{z-index:10000;pointer-events:none;position:fixed;inset:0}.guide-overlay{-webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px);pointer-events:auto;background:#000000d9;justify-content:center;align-items:center;display:flex;position:absolute;inset:0}.guide-modal{background:var(--surface);border:1px solid var(--border);border-radius:12px;flex-direction:column;width:90%;max-width:900px;max-height:90vh;display:flex;box-shadow:0 24px 80px #0009}.guide-header{border-bottom:1px solid var(--border);justify-content:space-between;align-items:center;padding:20px 24px;display:flex}.guide-header h2{font-size:18px}.guide-header p{color:var(--text-dim);font-size:12px}.guide-close{color:var(--text-dim);cursor:pointer;background:0 0;border:none;padding:4px 8px;font-size:24px}.guide-body{flex-direction:column;flex:1;display:flex;overflow-y:auto}.guide-tabs{border-bottom:1px solid var(--border);flex-shrink:0;gap:0;padding:0 24px;display:flex;overflow-x:auto}.guide-tab{color:var(--text-dim);cursor:pointer;white-space:nowrap;background:0 0;border:none;border-bottom:2px solid #0000;padding:12px 16px;font-family:inherit;font-size:12px;transition:all .15s}.guide-tab:hover{color:var(--text)}.guide-tab.active{color:var(--accent);border-bottom-color:var(--accent)}.guide-content{flex:1;padding:24px;overflow-y:auto}.guide-section{margin-bottom:32px}.guide-section h3{color:var(--text);margin-bottom:12px;font-size:16px}.guide-intro{color:var(--text-dim);margin-bottom:20px;font-size:13px;line-height:1.6}.calc-form{max-width:500px}.calc-result{grid-template-columns:repeat(3,1fr);gap:12px;margin:20px 0;display:grid}.result-card{background:var(--surface2);border:1px solid var(--border);border-radius:var(--radius);text-align:center;padding:16px}.result-label{text-transform:uppercase;letter-spacing:1px;color:var(--text-dim);margin-bottom:6px;font-size:10px}.result-value{color:var(--accent);font-size:22px;font-weight:700}.result-detail{color:var(--text-muted);margin-top:4px;font-size:10px}.placement-diagram{background:var(--surface2);border-radius:var(--radius);justify-content:center;margin-top:16px;padding:20px;display:flex}.rules-grid{grid-template-columns:1fr 1fr;gap:12px;display:grid}.rule{background:var(--surface2);border-radius:var(--radius);border:1px solid var(--border);gap:12px;padding:14px;display:flex}.rule-icon{flex-shrink:0;font-size:24px}.rule strong{margin-bottom:4px;font-size:13px;display:block}.rule p{color:var(--text-dim);margin:0;font-size:11px;line-height:1.5}.checklist{flex-direction:column;gap:8px;display:flex}.check-item{background:var(--surface2);border-radius:var(--radius-sm);cursor:pointer;align-items:center;gap:10px;padding:10px 14px;font-size:13px;display:flex}.check-item input{accent-color:var(--accent);width:16px;height:16px}.surface-types{grid-template-columns:1fr 1fr 1fr;gap:12px;display:grid}.surface-type-card{border-radius:var(--radius);border:1px solid var(--border);padding:16px}.surface-type-card h4{margin-bottom:8px;font-size:13px}.surface-type-card ul{color:var(--text-dim);padding-left:16px;font-size:11px;line-height:1.8}.surface-type-card.good{border-color:var(--success);background:#33ff880d}.surface-type-card.okay{border-color:var(--warning);background:#ffaa000d}.surface-type-card.bad{border-color:var(--danger);background:#ff33660d}.tips-list{flex-direction:column;gap:12px;display:flex}.tip{align-items:flex-start;gap:14px;display:flex}.tip-num{background:var(--surface2);border:1px solid var(--border);border-radius:50%;flex-shrink:0;justify-content:center;align-items:center;width:28px;height:28px;font-size:14px;display:flex}.tip strong{margin-bottom:2px;font-size:13px;display:block}.tip p{color:var(--text-dim);margin:0;font-size:11px;line-height:1.5}.setup-steps{flex-direction:column;gap:20px;display:flex}.setup-step{align-items:flex-start;gap:16px;display:flex}.step-num{background:var(--accent);color:#000;border-radius:50%;flex-shrink:0;justify-content:center;align-items:center;width:32px;height:32px;font-weight:700;display:flex}.setup-step h4{margin-bottom:4px;font-size:14px}.setup-step p{color:var(--text-dim);font-size:12px;line-height:1.6}.tip-box{border-radius:var(--radius-sm);background:#00d4ff14;border:1px solid #00d4ff33;margin-top:8px;padding:10px 14px;font-size:11px;line-height:1.5}.template-suggestions{gap:12px;margin-top:10px;display:flex}.template-card{background:var(--surface2);border:1px solid var(--border);border-radius:var(--radius);flex:1;padding:14px}.template-icon{margin-bottom:6px;font-size:24px;display:block}.template-card strong{margin-bottom:4px;font-size:12px;display:block}.template-card p{color:var(--text-dim);margin:0;font-size:10px;line-height:1.5}.ideas-grid{grid-template-columns:1fr 1fr;gap:12px;display:grid}.idea{background:var(--surface2);border:1px solid var(--border);border-radius:var(--radius);padding:14px}.idea-icon{margin-bottom:6px;font-size:24px;display:block}.idea strong{margin-bottom:4px;font-size:12px;display:block}.idea p{color:var(--text-dim);margin:0;font-size:11px;line-height:1.5}.universal-workflow{background:var(--surface2);border-radius:var(--radius);text-align:center;padding:20px}.universal-workflow h4{margin-bottom:16px}.workflow-steps{flex-wrap:wrap;justify-content:center;align-items:center;gap:8px;display:flex}.wf-step{flex-direction:column;align-items:center;gap:4px;display:flex}.wf-num{background:var(--accent);color:#000;border-radius:50%;justify-content:center;align-items:center;width:32px;height:32px;font-weight:700;display:flex}.wf-step span{color:var(--text-dim);font-size:11px}.wf-arrow{color:var(--text-muted);font-size:18px}.dropdown-header{text-transform:uppercase;letter-spacing:1px;color:var(--text-muted);padding:6px 12px;font-size:9px;font-weight:600}