:root{--bg: #f7f8fb;--panel: #ffffff;--text: #1f2937;--muted: #6b7280;--line: #d1d5db;--accent: #2563eb;--success: #059669}*{box-sizing:border-box}body{margin:0;font-family:Inter,system-ui,-apple-system,Segoe UI,Roboto,sans-serif;color:var(--text);background:var(--bg)}.app{display:grid;grid-template-columns:340px 1fr;min-height:100vh;gap:12px;padding:12px}.panel{background:var(--panel);border:1px solid var(--line);border-radius:12px;padding:12px;overflow:auto}.viewer{background:var(--panel);border:1px solid var(--line);border-radius:12px;position:relative;overflow:hidden;min-height:760px}h1{font-size:18px;margin:0 0 12px}h2{font-size:14px;margin:14px 0 8px;color:#111827}p{margin:4px 0;color:var(--muted);font-size:12px;line-height:1.4}.btn{border:1px solid var(--line);background:#fff;border-radius:8px;padding:8px 10px;cursor:pointer;font-size:12px}.btn:hover{background:#f9fafb}.muted{color:var(--muted);font-size:12px}.node-label{font-size:11px;fill:#1f2937;pointer-events:none;-webkit-user-select:none;user-select:none}.edge-label{font-size:10px;fill:#374151;pointer-events:none;-webkit-user-select:none;user-select:none;text-anchor:middle;paint-order:stroke fill;stroke:#ffffffd9;stroke-width:3px;stroke-linecap:round;stroke-linejoin:round}.group-label{font-size:12px;fill:#111827;font-weight:600;pointer-events:none;-webkit-user-select:none;user-select:none}#graph-root{width:100%;height:100%;position:relative}#popup{position:absolute;top:12px;right:12px;width:360px;max-height:70%;overflow:auto;border:1px solid var(--line);border-radius:10px;background:#fffffffa;padding:10px;display:none;box-shadow:0 10px 30px #0000001a;z-index:5}#popup h3{font-size:14px;margin:0 0 8px}#popup ul{margin:6px 0 0 16px;padding:0;font-size:12px}#popup li{margin-bottom:4px;line-height:1.35}.legend{position:absolute;bottom:8px;left:8px;background:#ffffffeb;border:1px solid var(--line);border-radius:8px;padding:6px 8px;font-size:12px;color:#4b5563;pointer-events:none}.nav-links{display:flex;flex-wrap:wrap;gap:8px;margin:8px 0}.nav-links a{color:var(--accent);text-decoration:none;font-size:12px}.nav-links a:hover{text-decoration:underline}.color-grid{display:grid;gap:8px;max-height:250px;overflow:auto;border:1px solid #e5e7eb;padding:8px;border-radius:8px;background:#fafafa}.color-item{display:flex;align-items:center;gap:6px;font-size:12px}.control{width:100%;border:1px solid var(--line);border-radius:8px;padding:7px 9px;font-size:13px;background:#fff}.row{margin:8px 0}.row label{display:block;font-size:12px;margin-bottom:4px;color:#374151}.group-controls-title{font-size:12px;font-weight:600;margin:8px 0 6px;color:#374151}.group-control-row{display:flex;align-items:center;margin:4px 0;font-size:12px}.group-control-row label{margin:0;display:inline}.editor-section{margin-top:12px}.editor-inline-form{margin-top:8px;padding:8px;border:1px solid var(--line);border-radius:8px;background:var(--bg)}.crud-list{list-style:none;margin:6px 0;padding:0;font-size:12px;max-height:180px;overflow:auto}.crud-item{display:flex;align-items:center;gap:8px;margin:4px 0;flex-wrap:wrap}.btn-sm{padding:4px 8px;font-size:11px}.editor-toast{margin-top:10px;padding:8px 10px;border-radius:8px;font-size:12px}.editor-toast--success{background:#d1fae5;color:#065f46;border:1px solid #a7f3d0}.editor-toast--error{background:#fee2e2;color:#991b1b;border:1px solid #fecaca}.editor-toast--info{background:#e0e7ff;color:#3730a3;border:1px solid #c7d2fe}.editor-loading{position:absolute;top:0;right:0;bottom:0;left:0;display:flex;align-items:center;justify-content:center;background:#ffffffeb;font-size:14px;color:var(--muted);z-index:2}.editor-properties-panel{width:320px;max-width:100%;margin-top:12px;padding:12px;border:1px solid var(--line);border-radius:8px;background:var(--bg)}.editor-properties-header{display:flex;align-items:center;justify-content:space-between;margin-bottom:10px}.editor-properties-header h2{margin:0;font-size:14px}.editor-properties-actions{margin-top:12px;display:flex;gap:8px;flex-wrap:wrap}.editor-context-menu{position:fixed;z-index:1000;min-width:160px;padding:4px 0;border:1px solid var(--line);border-radius:8px;background:#fff;box-shadow:0 4px 12px #0000001f}.editor-context-menu [role=menuitem]{display:block;width:100%;padding:8px 12px;text-align:left;border:none;background:none;cursor:pointer;font-size:13px}.editor-context-menu [role=menuitem]:hover{background:var(--bg)}.editor-viewer-panels{display:grid;gap:12px;grid-template-columns:minmax(0,1fr) minmax(0,1fr);grid-template-rows:minmax(0,1fr);transition:grid-template-columns .22s ease-out}.editor-viewer-panels>#editor-loading{grid-column:1 / -1;grid-row:1 / -1;z-index:2}.editor-viewer-panels>#graph-slot-left{grid-column:1;grid-row:1;min-width:0}.editor-viewer-panels>#graph-slot-right{grid-column:2;grid-row:1;min-width:0}.editor-viewer-panels[data-panel-split=leftCollapsed]{grid-template-columns:minmax(44px,48px) minmax(0,1fr)}.editor-viewer-panels[data-panel-split=rightCollapsed]{grid-template-columns:minmax(0,1fr) minmax(44px,48px)}@media (prefers-reduced-motion: reduce){.editor-viewer-panels{transition:none}}.graph-slot{display:flex;flex-direction:column;border:1px solid var(--line);border-radius:8px;overflow:hidden;min-height:560px;min-width:0}.graph-slot-full{flex:1;min-height:0;display:flex;flex-direction:column}.graph-slot-rail{display:none;flex-direction:column;align-items:center;padding:8px 4px 0;flex:1;min-height:0;background:var(--bg)}.graph-slot-rail-btn{min-width:44px;min-height:44px;padding:0;font-size:15px;line-height:1}.graph-slot--collapsed .graph-slot-full{display:none!important}.graph-slot--collapsed .graph-slot-rail{display:flex!important}.ptb-collapse-btn{flex-shrink:0}.panel-toolbar{display:flex;align-items:center;gap:6px;padding:4px 8px;background:var(--bg);border-bottom:1px solid var(--line);flex-shrink:0}.ptb-menu-wrap{position:relative;flex-shrink:0}.ptb-menu-btn{padding:0 7px;min-width:28px}.ptb-menu-icon{display:block;width:14px;height:2px;background:var(--text);border-radius:1px;box-shadow:0 4px 0 var(--text),0 8px 0 var(--text)}.ptb-menu-dropdown{position:absolute;left:0;top:calc(100% + 4px);z-index:120;min-width:188px;padding:4px 0;margin:0;list-style:none;background:var(--panel, #fff);border:1px solid var(--line);border-radius:8px;box-shadow:0 6px 20px #0000001f}.ptb-menu-item{display:block;width:100%;padding:8px 12px;border:none;background:none;text-align:left;font-size:12px;color:var(--text);cursor:pointer;font-family:inherit}.ptb-menu-item:hover,.ptb-menu-item:focus-visible{background:var(--bg);outline:none}.ptb-sel{border:1px solid var(--line);border-radius:5px;padding:2px 4px;font-size:11px;background:#fff;cursor:pointer;color:var(--text);height:22px;line-height:1;flex-shrink:0}.ptb-sel:disabled{opacity:.45;cursor:default}.ptb-layout-sel{flex:1;min-width:0}.ptb-btn{border:1px solid var(--line);border-radius:5px;padding:0 6px;font-size:11px;background:#fff;cursor:pointer;color:var(--text);height:22px;flex-shrink:0;line-height:20px}.ptb-btn:disabled{opacity:.45;cursor:default}.ptb-btn-danger{color:var(--accent);border-color:var(--accent)}.ptb-sep{width:1px;height:16px;background:var(--line);flex-shrink:0;margin:0 2px}.graph-root{flex:1;min-height:0}.relation-picker-overlay{position:fixed;top:0;right:0;bottom:0;left:0;z-index:2000;background:#00000059;display:flex;align-items:center;justify-content:center}.relation-picker-box{background:#fff;border-radius:10px;padding:20px 24px;box-shadow:0 8px 32px #0000002e;min-width:260px;max-width:360px}.relation-picker-title{font-weight:600;font-size:14px;margin-bottom:4px}.relation-picker-actions{display:flex;gap:8px;justify-content:flex-end;margin-top:8px}.prop-attr-name{font-size:13px;padding:4px 0}.prop-attr-type{font-size:11px;padding:4px 0}