:root{--primary-color: #2196F3;--primary-dark: #1976D2;--primary-light: #64B5F6;--primary-gradient: linear-gradient(135deg, #2196F3 0%, #1565C0 100%);--primary-text: white;--primary-bg-dark: #1a1a2e;--accent-color: #a8e063;--accent-light: #b8e87a;--accent-dark: #7cb342;--gray-50: #fafafa;--gray-100: #f5f5f5;--gray-200: #eeeeee;--gray-300: #e0e0e0;--gray-400: #bdbdbd;--gray-500: #9e9e9e;--gray-600: #757575;--gray-700: #616161;--gray-800: #424242;--gray-900: #212121;--success-color: #4CAF50;--warning-color: #FF9800;--error-color: #f44336;--info-color: #2196F3;--card-red: #ffcdd2;--card-blue: #bbdefb;--card-green: #d4edb3;--card-yellow: #fff9c4;--card-purple: #e1bee7;--card-white: #ffffff;--card-lime: #f2fea1;--card-sky: #cadbfc;--card-mint: #cbfdd9;--card-orange: #fee9b4;--card-lavender: #caf2fc;--card-coral: #ffd3c9;--spacing-xs: 4px;--spacing-sm: 8px;--spacing-md: 16px;--spacing-lg: 24px;--spacing-xl: 32px;--radius-sm: 6px;--radius-md: 10px;--radius-lg: 16px;--radius-xl: 20px;--shadow-sm: 0 1px 3px rgba(0, 0, 0, .08);--shadow-md: 0 4px 12px rgba(0, 0, 0, .1);--shadow-lg: 0 8px 24px rgba(0, 0, 0, .12);--shadow-xl: 0 16px 48px rgba(0, 0, 0, .15);--transition-fast: .15s ease;--transition-normal: .25s ease;--transition-slow: .35s ease;--transition-bounce: .4s cubic-bezier(.16, 1, .3, 1);--interaction-primary: var(--primary-color);--interaction-primary-rgb: 33, 150, 243;--interaction-primary-glow: 0 0 0 3px var(--interaction-primary), 0 0 12px rgba(33, 150, 243, .4);--interaction-accent: var(--primary-dark);--interaction-accent-rgb: 25, 118, 210;--interaction-accent-glow: 0 0 8px rgba(25, 118, 210, .6);--drag-color: #b2e165;--drag-color-rgb: 178, 225, 101;--drag-glow: 0 0 8px rgba(178, 225, 101, .6);--interaction-neutral: var(--gray-500);--interaction-neutral-dark: var(--gray-700)}*{margin:0;padding:0;box-sizing:border-box}body{font-family:-apple-system,BlinkMacSystemFont,Segoe 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#00000026;min-width:250px;z-index:1000;display:none;opacity:0;transform:translateY(-10px);transition:opacity .2s,transform .2s}.organize-menu.show{display:block;opacity:1;transform:translateY(0)}.organize-option{padding:12px 16px;cursor:pointer;transition:background .2s;display:flex;align-items:center;gap:12px;border-bottom:1px solid #f0f0f0}.organize-option:last-child{border-bottom:none}.organize-option:hover{background:#f5f7fa}.organize-option:first-child{border-radius:8px 8px 0 0}.organize-option:last-child{border-radius:0 0 8px 8px}.option-icon{font-size:20px;flex-shrink:0}.option-text{flex:1;font-weight:500;color:#333}.option-desc{font-size:11px;color:#999;font-style:italic}#canvas-container{position:fixed;top:64px;left:0;right:0;bottom:0;overflow:hidden;cursor:grab;background-color:#f8f8fa;background-image:radial-gradient(circle,var(--gray-300) 1px,transparent 1px);background-size:24px 24px}#canvas-container:active,#canvas-container.panning{cursor:grabbing}#canvas-container.space-mode{cursor:grab}#canvas-container.space-mode:active{cursor:grabbing}#canvas-container.space-mode *{cursor:grab!important}#canvas-container.space-mode:active *{cursor:grabbing!important}#canvas-container.sidebar-open{cursor:default!important}#connections-layer{position:absolute;top:0;left:0;width:100%;height:100%;pointer-events:none;z-index:1;overflow:visible}.connection{stroke:var(--interaction-neutral);stroke-width:2;fill:none;pointer-events:stroke;cursor:pointer;transition:stroke-width .2s,stroke .2s,filter .2s}.connection-hitbox{stroke:transparent;stroke-width:20;fill:none;pointer-events:stroke;cursor:pointer;z-index:1}.connection-hitbox:hover+.connection{stroke-width:4;stroke:var(--interaction-neutral-dark)}.connection:hover{stroke-width:4;stroke:var(--interaction-neutral-dark)}.connection.selected{stroke:var(--drag-color);stroke-width:4;filter:drop-shadow(0 0 6px rgba(139,195,74,.8))}.connection-hitbox.selected+.connection{stroke:var(--drag-color);stroke-width:4;filter:drop-shadow(0 0 6px rgba(139,195,74,.8))}.connection-arrow{fill:var(--interaction-neutral)}@keyframes ai-flow{0%{stroke-dashoffset:24}to{stroke-dashoffset:0}}.connection.ai-active{stroke:#a78bfa;stroke-width:2.5;stroke-dasharray:8 4;animation:ai-flow .5s linear infinite;filter:drop-shadow(0 0 4px rgba(167,139,250,.8));transition:none}@keyframes ai-particle{0%{opacity:0;offset-distance:0%}10%{opacity:1}90%{opacity:1}to{opacity:0;offset-distance:100%}}@keyframes ai-card-pulse{0%,to{box-shadow:0 0 0 2px #a78bfa66,0 0 12px #a78bfa33}50%{box-shadow:0 0 0 3px #a78bfae6,0 0 20px #a78bfa80}}.card.ai-active{animation:ai-card-pulse 1.2s ease-in-out infinite;transition:none}@keyframes ai-target-pulse{0%,to{box-shadow:0 0 0 2px #4ade8080,0 0 16px #4ade8033}50%{box-shadow:0 0 0 3px #4ade80,0 0 28px #4ade8099}}.card.ai-target{animation:ai-target-pulse .8s ease-in-out infinite;transition:none}body.dark-mode .connection.ai-active{stroke:#c4b5fd;filter:drop-shadow(0 0 5px rgba(196,181,253,.9))}body.dark-mode .card.ai-active{animation:ai-card-pulse 1.2s ease-in-out infinite}#cards-layer{position:absolute;top:0;left:0;width:100%;height:100%;z-index:2;pointer-events:none;user-select:none;-webkit-user-select:none;-moz-user-select:none;-ms-user-select:none;-webkit-font-smoothing:subpixel-antialiased;-moz-osx-font-smoothing:grayscale;text-rendering:optimizeLegibility}.card{position:absolute;width:250px;min-width:80px;min-height:100px;background:#fff;border-radius:var(--radius-lg);box-shadow:var(--shadow-md);border:1px solid var(--gray-200);cursor:move;transition:box-shadow var(--transition-normal),border-color var(--transition-normal),opacity var(--transition-normal);user-select:none;-webkit-user-select:none;-moz-user-select:none;-ms-user-select:none;box-sizing:border-box;overflow:visible;display:flex;flex-direction:column;pointer-events:auto;-webkit-tap-highlight-color:transparent;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;text-rendering:optimizeLegibility}.card:hover{box-shadow:var(--shadow-lg);transform:translateY(-2px)}.card.selected{outline:2px solid #72dd9f;outline-offset:0px;box-shadow:var(--shadow-lg);border-color:#72dd9f}.card.selected .card-content{user-select:none;-webkit-user-select:none;cursor:grab}.card.selected .card-content:active{cursor:grabbing}#selection-box{position:absolute;border:2px dashed var(--interaction-primary);background:#2196f31a;pointer-events:none;z-index:1000}.card.connecting{box-shadow:0 0 0 2px var(--drag-color)}.card.uploading{opacity:.6}.card.uploading:after{content:"⏳ 上传中...";position:absolute;top:5px;right:5px;background:#000000b3;color:#fff;font-size:11px;padding:3px 8px;border-radius:10px;z-index:100}.card.upload-error{border:2px solid #f44336;box-shadow:0 0 0 2px #f44336}.card.upload-error:after{content:"❌ 上传失败";position:absolute;top:5px;right:5px;background:#f44336;color:#fff;font-size:11px;padding:3px 8px;border-radius:10px;z-index:100}.card-resize-handle{position:absolute;width:20px;height:20px;background:transparent;border:none;border-radius:4px;z-index:20;opacity:0;transition:all .2s}.card-resize-handle:before{content:"";position:absolute;top:-10px;left:-10px;right:-10px;bottom:-10px;background:transparent}.card:hover .card-resize-handle{opacity:1}.card-resize-handle:hover{opacity:1!important}.card-resize-handle.top-left{top:-10px;left:-10px;cursor:nw-resize}.card-resize-handle.top-right{top:-10px;right:-10px;cursor:ne-resize}.card-resize-handle.bottom-left{bottom:-10px;left:-10px;cursor:sw-resize}.card-resize-handle.bottom-right{bottom:-10px;right:-10px;cursor:se-resize}.card-header{display:flex;justify-content:center;align-items:center;padding:12px var(--spacing-md);background:linear-gradient(180deg,var(--gray-50) 0%,var(--gray-100) 100%);border-radius:var(--radius-lg) var(--radius-lg) 0 0;border-bottom:none;box-sizing:border-box;width:100%;flex-shrink:0;pointer-events:auto!important;touch-action:auto!important;overflow:hidden}.card-header>*{pointer-events:auto!important}.card-title{font-weight:600;font-size:15px;color:var(--gray-800);outline:none;width:100%;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;padding:0 5px;box-sizing:border-box}.card-title:empty:before{content:"双击/回车编辑";color:#ccc;font-style:italic;pointer-events:none}.card[data-has-content=false]:not([data-has-image=true]){min-height:auto}.card[data-has-content=false]:not([data-has-image=true]) .card-header{border-radius:var(--radius-lg);border-bottom:none}.card[data-has-content=false][data-has-image=true]:not([data-pure-image=true]) .card-header{border-bottom:none}.card[data-has-content=false][data-has-image=true]:not([data-pure-image=true]) .card-image-container{border-top:none}.card-content{padding:var(--spacing-md);font-size:14px;line-height:1.7;color:var(--gray-700);min-height:40px;outline:none;box-sizing:border-box;width:100%;overflow-wrap:break-word;word-wrap:break-word;word-break:break-word;white-space:normal;overflow:hidden auto;flex:1;pointer-events:auto!important;touch-action:auto!important;border-radius:0 0 calc(var(--radius-lg) - 2px) calc(var(--radius-lg) - 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.card-image{width:100%;height:100%;max-width:100%;max-height:100%;display:block;border-radius:0;cursor:pointer;object-fit:contain;position:relative;-webkit-user-drag:none;user-drag:none;pointer-events:none}.card[data-pure-image=true]{background:transparent;border:none;box-shadow:none;overflow:hidden}.card[data-pure-image=true] .card-header,.card[data-pure-image=true] .card-content{display:none!important}.card[data-pure-image=true] .card-image-container{height:100%!important;border-top:none!important;border-radius:var(--radius-lg)!important;background:transparent!important;overflow:hidden;pointer-events:auto!important;cursor:move}.card[data-pure-image=true] .card-image{border-radius:var(--radius-lg);object-fit:cover;pointer-events:none!important}.card[data-pure-image=true].selected{outline:2px solid #72dd9f;outline-offset:0px;border-radius:var(--radius-lg)}.card[data-pure-image=true]:hover{box-shadow:var(--shadow-lg);transform:translateY(-2px)}body.dark-mode .card[data-pure-image=true].selected{outline:2px solid #72dd9f}.card-connectors{position:absolute;top:0;left:0;right:0;bottom:0;pointer-events:none;z-index:15}.connector{position:absolute;width:16px;height:16px;background:#fff;border:3px solid var(--gray-500);border-radius:50%;opacity:0;transition:all .2s;pointer-events:auto;cursor:crosshair;z-index:15;box-shadow:0 2px 4px #0003}.connector:before{content:"";position:absolute;top:-8px;left:-8px;right:-8px;bottom:-8px;background:transparent;border-radius:50%}.card:hover .connector{opacity:1}#canvas-container.zooming .connector,#canvas-container.resizing .connector{opacity:0!important;pointer-events:none!important}.connector.top:hover{opacity:1!important;transform:translate(-50%) scale(1.5);background:var(--gray-100);border-color:var(--gray-500);box-shadow:0 2px 8px #0000004d}.connector.right:hover{opacity:1!important;transform:translateY(-50%) scale(1.5);background:var(--gray-100);border-color:var(--gray-500);box-shadow:0 2px 8px 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