.eval1-studio{--studio-bg: #f0f4f8;--studio-surface: #ffffff;--studio-border: #e2e8f0;--studio-text: #0f172a;--studio-muted: #64748b;--studio-accent: #0d9488;--studio-accent-soft: #ccfbf1;--studio-violet: #7c3aed;--studio-violet-soft: #ede9fe;--studio-amber: #d97706;--studio-amber-soft: #fef3c7;--studio-coral: #dc2626;--studio-coral-soft: #fee2e2;--studio-sky: #0284c7;--studio-sky-soft: #e0f2fe;--studio-shadow: 0 1px 3px rgba(15, 23, 42, .06), 0 4px 16px rgba(15, 23, 42, .04);height:100vh;width:100%;display:flex;flex-direction:column;background:var(--studio-bg);color:var(--studio-text);font-family:Segoe UI,PingFang SC,system-ui,sans-serif;overflow:hidden}.eval1-studio *{box-sizing:border-box}.studio-header{flex:0 0 5%;min-height:52px;max-height:64px;display:flex;align-items:center;justify-content:space-between;padding:0 20px;background:linear-gradient(90deg,#fff,#f8fafc);border-bottom:1px solid var(--studio-border);box-shadow:var(--studio-shadow);z-index:20}.studio-header 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var(--studio-border);background:var(--studio-surface);color:var(--studio-text);font-size:12px;font-weight:600;min-width:120px}.studio-dataset-select{min-width:220px;max-width:min(360px,38vw)}.layer2-load-error{color:#b91c1c;font-size:11px;margin:8px 0}.layer2-bot-banner{flex-shrink:0;display:flex;align-items:center;flex-wrap:wrap;gap:8px;padding:8px 14px;background:#f0fdfa;border-bottom:1px solid #99f6e4;font-size:11px}.layer2-bot-badge{font-size:10px;font-weight:700;padding:2px 8px;border-radius:4px}.layer2-bot-badge.qwen{color:#047857;background:#d1fae5}.layer2-bot-badge.deepseek{color:#1d4ed8;background:#dbeafe}.layer2-bot-banner-meta{color:var(--studio-muted)}.studio-header select{padding:6px 10px;border-radius:8px;border:1px solid var(--studio-border);background:var(--studio-surface);color:var(--studio-text);font-size:12px}.studio-header .btn-ghost{padding:6px 12px;border-radius:8px;border:1px solid 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var(--studio-border);font-size:11px;font-weight:600;text-transform:uppercase;letter-spacing:.06em;color:var(--studio-muted)}.studio-sidebar-scroll{flex:1;overflow-y:auto;padding:8px 10px 16px}.studio-main{flex:1 1 80%;min-width:0;display:flex;flex-direction:column;overflow:hidden}.studio-layer-tabs{display:flex;gap:4px;padding:10px 16px 0;border-bottom:1px solid var(--studio-border);background:var(--studio-surface)}.studio-layer-tab{padding:8px 14px;border:none;border-radius:8px 8px 0 0;background:transparent;color:var(--studio-muted);font-size:12px;font-weight:500;cursor:pointer}.studio-layer-tab.active{background:var(--studio-accent-soft);color:var(--studio-accent);font-weight:600}.studio-layer-content{flex:1;min-height:0;overflow:hidden;padding:0;display:flex;flex-direction:column}.layer-view{flex:1;min-height:0;display:flex;flex-direction:column;overflow:hidden}.layer-view-toolbar{flex-shrink:0;display:flex;align-items:center;gap:10px;padding:8px 14px;border-bottom:1px solid 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var(--studio-border);background:var(--studio-surface);display:flex;align-items:center;gap:8px}.path-badge{margin-left:auto;font-size:11px;font-weight:500;color:var(--studio-muted)}.kg-canvas-fill{flex:1;min-height:0;width:100%;background:linear-gradient(180deg,#f8fafc,#eef2f7);cursor:grab;-webkit-user-select:none;user-select:none}.kg-canvas-fill.grabbing{cursor:grabbing}.kg-canvas-fill.fsm-scroll{overflow:auto;padding:12px}.layer1-fsm-panel{display:flex;flex-direction:column;gap:8px;min-height:0;background:#f8fafc}.layer1-fsm-panel .goal-fsm-graph{flex:1;min-height:320px}.layer1-fsm-panel .goal-fsm-graph--studio{touch-action:pan-x pan-y}.path-fsm-spine{display:flex;flex-direction:column;align-items:center;width:100%;padding:12px 16px 20px;gap:0}.path-fsm-step{display:flex;flex-direction:column;align-items:center;width:100%}.path-fsm-node-wrap{display:flex;justify-content:center;width:100%}.path-fsm-node{padding:10px 16px;border-radius:10px;border:2px 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