.react-flow{direction:ltr;--xy-edge-stroke-default: #b1b1b7;--xy-edge-stroke-width-default: 1;--xy-edge-stroke-selected-default: #555;--xy-connectionline-stroke-default: #b1b1b7;--xy-connectionline-stroke-width-default: 1;--xy-attribution-background-color-default: rgba(255, 255, 255, .5);--xy-minimap-background-color-default: #fff;--xy-minimap-mask-background-color-default: rgba(240, 240, 240, .6);--xy-minimap-mask-stroke-color-default: transparent;--xy-minimap-mask-stroke-width-default: 1;--xy-minimap-node-background-color-default: #e2e2e2;--xy-minimap-node-stroke-color-default: transparent;--xy-minimap-node-stroke-width-default: 2;--xy-background-color-default: transparent;--xy-background-pattern-dots-color-default: #91919a;--xy-background-pattern-lines-color-default: #eee;--xy-background-pattern-cross-color-default: #e2e2e2;background-color:var(--xy-background-color, var(--xy-background-color-default));--xy-node-color-default: inherit;--xy-node-border-default: 1px solid #1a192b;--xy-node-background-color-default: #fff;--xy-node-group-background-color-default: rgba(240, 240, 240, .25);--xy-node-boxshadow-hover-default: 0 1px 4px 1px rgba(0, 0, 0, .08);--xy-node-boxshadow-selected-default: 0 0 0 .5px #1a192b;--xy-node-border-radius-default: 3px;--xy-handle-background-color-default: #1a192b;--xy-handle-border-color-default: #fff;--xy-selection-background-color-default: rgba(0, 89, 220, .08);--xy-selection-border-default: 1px dotted rgba(0, 89, 220, .8);--xy-controls-button-background-color-default: #fefefe;--xy-controls-button-background-color-hover-default: #f4f4f4;--xy-controls-button-color-default: inherit;--xy-controls-button-color-hover-default: inherit;--xy-controls-button-border-color-default: #eee;--xy-controls-box-shadow-default: 0 0 2px 1px rgba(0, 0, 0, .08);--xy-edge-label-background-color-default: #ffffff;--xy-edge-label-color-default: inherit;--xy-resize-background-color-default: #3367d9}.react-flow.dark{--xy-edge-stroke-default: #3e3e3e;--xy-edge-stroke-width-default: 1;--xy-edge-stroke-selected-default: #727272;--xy-connectionline-stroke-default: #b1b1b7;--xy-connectionline-stroke-width-default: 1;--xy-attribution-background-color-default: rgba(150, 150, 150, .25);--xy-minimap-background-color-default: #141414;--xy-minimap-mask-background-color-default: rgba(60, 60, 60, .6);--xy-minimap-mask-stroke-color-default: transparent;--xy-minimap-mask-stroke-width-default: 1;--xy-minimap-node-background-color-default: #2b2b2b;--xy-minimap-node-stroke-color-default: transparent;--xy-minimap-node-stroke-width-default: 2;--xy-background-color-default: #141414;--xy-background-pattern-dots-color-default: #555;--xy-background-pattern-lines-color-default: #333;--xy-background-pattern-cross-color-default: #333;--xy-node-color-default: #f8f8f8;--xy-node-border-default: 1px solid #3c3c3c;--xy-node-background-color-default: #1e1e1e;--xy-node-group-background-color-default: rgba(240, 240, 240, .25);--xy-node-boxshadow-hover-default: 0 1px 4px 1px rgba(255, 255, 255, .08);--xy-node-boxshadow-selected-default: 0 0 0 .5px #999;--xy-handle-background-color-default: #bebebe;--xy-handle-border-color-default: #1e1e1e;--xy-selection-background-color-default: rgba(200, 200, 220, .08);--xy-selection-border-default: 1px dotted rgba(200, 200, 220, .8);--xy-controls-button-background-color-default: #2b2b2b;--xy-controls-button-background-color-hover-default: #3e3e3e;--xy-controls-button-color-default: #f8f8f8;--xy-controls-button-color-hover-default: #fff;--xy-controls-button-border-color-default: #5b5b5b;--xy-controls-box-shadow-default: 0 0 2px 1px rgba(0, 0, 0, .08);--xy-edge-label-background-color-default: #141414;--xy-edge-label-color-default: #f8f8f8}.react-flow__background{background-color:var(--xy-background-color-props, var(--xy-background-color, var(--xy-background-color-default)));pointer-events:none;z-index:-1}.react-flow__container{position:absolute;width:100%;height:100%;top:0;left:0}.react-flow__pane{z-index:1;touch-action:none}.react-flow__pane.draggable{cursor:grab}.react-flow__pane.dragging{cursor:grabbing}.react-flow__pane.selection{cursor:pointer}.react-flow__viewport{transform-origin:0 0;z-index:2;pointer-events:none}.react-flow__renderer{z-index:4}.react-flow__selection{z-index:6}.react-flow__nodesselection-rect:focus,.react-flow__nodesselection-rect:focus-visible{outline:none}.react-flow__edge-path{stroke:var(--xy-edge-stroke, var(--xy-edge-stroke-default));stroke-width:var(--xy-edge-stroke-width, var(--xy-edge-stroke-width-default));fill:none}.react-flow__connection-path{stroke:var(--xy-connectionline-stroke, var(--xy-connectionline-stroke-default));stroke-width:var(--xy-connectionline-stroke-width, var(--xy-connectionline-stroke-width-default));fill:none}.react-flow .react-flow__edges{position:absolute}.react-flow .react-flow__edges svg{overflow:visible;position:absolute;pointer-events:none}.react-flow__edge{pointer-events:visibleStroke}.react-flow__edge.selectable{cursor:pointer}.react-flow__edge.animated path{stroke-dasharray:5;animation:dashdraw .5s linear infinite}.react-flow__edge.animated path.react-flow__edge-interaction{stroke-dasharray:none;animation:none}.react-flow__edge.inactive{pointer-events:none}.react-flow__edge.selected,.react-flow__edge:focus,.react-flow__edge:focus-visible{outline:none}.react-flow__edge.selected .react-flow__edge-path,.react-flow__edge.selectable:focus .react-flow__edge-path,.react-flow__edge.selectable:focus-visible .react-flow__edge-path{stroke:var(--xy-edge-stroke-selected, var(--xy-edge-stroke-selected-default))}.react-flow__edge-textwrapper{pointer-events:all}.react-flow__edge .react-flow__edge-text{pointer-events:none;-webkit-user-select:none;-moz-user-select:none;user-select:none}.react-flow__arrowhead polyline{stroke:var(--xy-edge-stroke, var(--xy-edge-stroke-default))}.react-flow__arrowhead polyline.arrowclosed{fill:var(--xy-edge-stroke, var(--xy-edge-stroke-default))}.react-flow__connection{pointer-events:none}.react-flow__connection .animated{stroke-dasharray:5;animation:dashdraw .5s linear infinite}svg.react-flow__connectionline{z-index:1001;overflow:visible;position:absolute}.react-flow__nodes{pointer-events:none;transform-origin:0 0}.react-flow__node{position:absolute;-webkit-user-select:none;-moz-user-select:none;user-select:none;pointer-events:all;transform-origin:0 0;box-sizing:border-box;cursor:default}.react-flow__node.selectable{cursor:pointer}.react-flow__node.draggable{cursor:grab;pointer-events:all}.react-flow__node.draggable.dragging{cursor:grabbing}.react-flow__nodesselection{z-index:3;transform-origin:left top;pointer-events:none}.react-flow__nodesselection-rect{position:absolute;pointer-events:all;cursor:grab}.react-flow__handle{position:absolute;pointer-events:none;min-width:5px;min-height:5px;width:6px;height:6px;background-color:var(--xy-handle-background-color, var(--xy-handle-background-color-default));border:1px solid var(--xy-handle-border-color, var(--xy-handle-border-color-default));border-radius:100%}.react-flow__handle.connectingfrom{pointer-events:all}.react-flow__handle.connectionindicator{pointer-events:all;cursor:crosshair}.react-flow__handle-bottom{top:auto;left:50%;bottom:0;transform:translate(-50%,50%)}.react-flow__handle-top{top:0;left:50%;transform:translate(-50%,-50%)}.react-flow__handle-left{top:50%;left:0;transform:translate(-50%,-50%)}.react-flow__handle-right{top:50%;right:0;transform:translate(50%,-50%)}.react-flow__edgeupdater{cursor:move;pointer-events:all}.react-flow__pane.selection .react-flow__panel{pointer-events:none}.react-flow__panel{position:absolute;z-index:5;margin:15px}.react-flow__panel.top{top:0}.react-flow__panel.bottom{bottom:0}.react-flow__panel.top.center,.react-flow__panel.bottom.center{left:50%;transform:translate(-15px) translate(-50%)}.react-flow__panel.left{left:0}.react-flow__panel.right{right:0}.react-flow__panel.left.center,.react-flow__panel.right.center{top:50%;transform:translateY(-15px) translateY(-50%)}.react-flow__attribution{font-size:10px;background:var(--xy-attribution-background-color, var(--xy-attribution-background-color-default));padding:2px 3px;margin:0}.react-flow__attribution a{text-decoration:none;color:#999}@keyframes dashdraw{0%{stroke-dashoffset:10}}.react-flow__edgelabel-renderer{position:absolute;width:100%;height:100%;pointer-events:none;-webkit-user-select:none;-moz-user-select:none;user-select:none;left:0;top:0}.react-flow__viewport-portal{position:absolute;width:100%;height:100%;left:0;top:0;-webkit-user-select:none;-moz-user-select:none;user-select:none}.react-flow__minimap{background:var( --xy-minimap-background-color-props, var(--xy-minimap-background-color, var(--xy-minimap-background-color-default)) )}.react-flow__minimap-svg{display:block}.react-flow__minimap-mask{fill:var( --xy-minimap-mask-background-color-props, var(--xy-minimap-mask-background-color, var(--xy-minimap-mask-background-color-default)) );stroke:var( --xy-minimap-mask-stroke-color-props, var(--xy-minimap-mask-stroke-color, var(--xy-minimap-mask-stroke-color-default)) );stroke-width:var( --xy-minimap-mask-stroke-width-props, var(--xy-minimap-mask-stroke-width, var(--xy-minimap-mask-stroke-width-default)) )}.react-flow__minimap-node{fill:var( --xy-minimap-node-background-color-props, var(--xy-minimap-node-background-color, var(--xy-minimap-node-background-color-default)) );stroke:var( --xy-minimap-node-stroke-color-props, var(--xy-minimap-node-stroke-color, var(--xy-minimap-node-stroke-color-default)) );stroke-width:var( --xy-minimap-node-stroke-width-props, var(--xy-minimap-node-stroke-width, var(--xy-minimap-node-stroke-width-default)) )}.react-flow__background-pattern.dots{fill:var( --xy-background-pattern-color-props, var(--xy-background-pattern-color, var(--xy-background-pattern-dots-color-default)) )}.react-flow__background-pattern.lines{stroke:var( --xy-background-pattern-color-props, var(--xy-background-pattern-color, var(--xy-background-pattern-lines-color-default)) )}.react-flow__background-pattern.cross{stroke:var( --xy-background-pattern-color-props, var(--xy-background-pattern-color, var(--xy-background-pattern-cross-color-default)) )}.react-flow__controls{display:flex;flex-direction:column;box-shadow:var(--xy-controls-box-shadow, var(--xy-controls-box-shadow-default))}.react-flow__controls.horizontal{flex-direction:row}.react-flow__controls-button{display:flex;justify-content:center;align-items:center;height:26px;width:26px;padding:4px;border:none;background:var(--xy-controls-button-background-color, var(--xy-controls-button-background-color-default));border-bottom:1px solid var( --xy-controls-button-border-color-props, var(--xy-controls-button-border-color, var(--xy-controls-button-border-color-default)) );color:var( --xy-controls-button-color-props, var(--xy-controls-button-color, var(--xy-controls-button-color-default)) );cursor:pointer;-webkit-user-select:none;-moz-user-select:none;user-select:none}.react-flow__controls-button svg{width:100%;max-width:12px;max-height:12px;fill:currentColor}.react-flow__edge.updating .react-flow__edge-path{stroke:#777}.react-flow__edge-text{font-size:10px}.react-flow__node.selectable:focus,.react-flow__node.selectable:focus-visible{outline:none}.react-flow__node-input,.react-flow__node-default,.react-flow__node-output,.react-flow__node-group{padding:10px;border-radius:var(--xy-node-border-radius, var(--xy-node-border-radius-default));width:150px;font-size:12px;color:var(--xy-node-color, var(--xy-node-color-default));text-align:center;border:var(--xy-node-border, var(--xy-node-border-default));background-color:var(--xy-node-background-color, var(--xy-node-background-color-default))}.react-flow__node-input.selectable:hover,.react-flow__node-default.selectable:hover,.react-flow__node-output.selectable:hover,.react-flow__node-group.selectable:hover{box-shadow:var(--xy-node-boxshadow-hover, var(--xy-node-boxshadow-hover-default))}.react-flow__node-input.selectable.selected,.react-flow__node-input.selectable:focus,.react-flow__node-input.selectable:focus-visible,.react-flow__node-default.selectable.selected,.react-flow__node-default.selectable:focus,.react-flow__node-default.selectable:focus-visible,.react-flow__node-output.selectable.selected,.react-flow__node-output.selectable:focus,.react-flow__node-output.selectable:focus-visible,.react-flow__node-group.selectable.selected,.react-flow__node-group.selectable:focus,.react-flow__node-group.selectable:focus-visible{box-shadow:var(--xy-node-boxshadow-selected, var(--xy-node-boxshadow-selected-default))}.react-flow__node-group{background-color:var(--xy-node-group-background-color, var(--xy-node-group-background-color-default))}.react-flow__nodesselection-rect,.react-flow__selection{background:var(--xy-selection-background-color, var(--xy-selection-background-color-default));border:var(--xy-selection-border, var(--xy-selection-border-default))}.react-flow__nodesselection-rect:focus,.react-flow__nodesselection-rect:focus-visible,.react-flow__selection:focus,.react-flow__selection:focus-visible{outline:none}.react-flow__controls-button:hover{background:var( --xy-controls-button-background-color-hover-props, var(--xy-controls-button-background-color-hover, var(--xy-controls-button-background-color-hover-default)) );color:var( --xy-controls-button-color-hover-props, var(--xy-controls-button-color-hover, var(--xy-controls-button-color-hover-default)) )}.react-flow__controls-button:disabled{pointer-events:none}.react-flow__controls-button:disabled svg{fill-opacity:.4}.react-flow__controls-button:last-child{border-bottom:none}.react-flow__controls.horizontal .react-flow__controls-button{border-bottom:none;border-right:1px solid var( --xy-controls-button-border-color-props, var(--xy-controls-button-border-color, var(--xy-controls-button-border-color-default)) )}.react-flow__controls.horizontal .react-flow__controls-button:last-child{border-right:none}.react-flow__resize-control{position:absolute}.react-flow__resize-control.left,.react-flow__resize-control.right{cursor:ew-resize}.react-flow__resize-control.top,.react-flow__resize-control.bottom{cursor:ns-resize}.react-flow__resize-control.top.left,.react-flow__resize-control.bottom.right{cursor:nwse-resize}.react-flow__resize-control.bottom.left,.react-flow__resize-control.top.right{cursor:nesw-resize}.react-flow__resize-control.handle{width:5px;height:5px;border:1px solid #fff;border-radius:1px;background-color:var(--xy-resize-background-color, var(--xy-resize-background-color-default));translate:-50% -50%}.react-flow__resize-control.handle.left{left:0;top:50%}.react-flow__resize-control.handle.right{left:100%;top:50%}.react-flow__resize-control.handle.top{left:50%;top:0}.react-flow__resize-control.handle.bottom{left:50%;top:100%}.react-flow__resize-control.handle.top.left,.react-flow__resize-control.handle.bottom.left{left:0}.react-flow__resize-control.handle.top.right,.react-flow__resize-control.handle.bottom.right{left:100%}.react-flow__resize-control.line{border-color:var(--xy-resize-background-color, var(--xy-resize-background-color-default));border-width:0;border-style:solid}.react-flow__resize-control.line.left,.react-flow__resize-control.line.right{width:1px;transform:translate(-50%);top:0;height:100%}.react-flow__resize-control.line.left{left:0;border-left-width:1px}.react-flow__resize-control.line.right{left:100%;border-right-width:1px}.react-flow__resize-control.line.top,.react-flow__resize-control.line.bottom{height:1px;transform:translateY(-50%);left:0;width:100%}.react-flow__resize-control.line.top{top:0;border-top-width:1px}.react-flow__resize-control.line.bottom{border-bottom-width:1px;top:100%}.react-flow__edge-textbg{fill:var(--xy-edge-label-background-color, var(--xy-edge-label-background-color-default))}.react-flow__edge-text{fill:var(--xy-edge-label-color, var(--xy-edge-label-color-default))}:root{--bg: #f5f6f8;--surface: #ffffff;--ink: #1b1f24;--muted: #4b5563;--line: #d0d5dd;--focus: #0b5cd5;--ok: #14703a;--warn: #7a4f00;--bad: #b42318;--rung-0: #e4e7ec;--rung-1: #d6e4f7;--rung-2: #cfeedd;--rung-3: #fbe9c4;--node-dark: #2d333b;--node-blue: #1e4fa3;--node-green: #14703a;--node-grey: #5b6470;--node-red: #b42318;--node-amber: #8a5a00;--node-text: #ffffff;--edge: #5b6470;color-scheme:light dark}@media(prefers-color-scheme:dark){:root:not([data-theme=light]){--bg: #111418;--surface: #1a1e24;--ink: #eef1f5;--muted: #b4bcc8;--line: #3a414c;--focus: #7ab4ff;--ok: #6fd69a;--warn: #f2c46d;--bad: #ff8a80;--rung-0: #262b33;--rung-1: #1d3350;--rung-2: #1b4030;--rung-3: #4a3a14;--node-dark: #3a414c;--node-blue: #2a5fb8;--node-green: #1f7a45;--node-grey: #4a525e;--node-red: #a8322a;--node-amber: #8a5a00;--edge: #9aa3af}}:root[data-theme=dark]{--bg: #111418;--surface: #1a1e24;--ink: #eef1f5;--muted: #b4bcc8;--line: #3a414c;--focus: #7ab4ff;--ok: #6fd69a;--warn: #f2c46d;--bad: #ff8a80;--rung-0: #262b33;--rung-1: #1d3350;--rung-2: #1b4030;--rung-3: #4a3a14;--node-dark: #3a414c;--node-blue: #2a5fb8;--node-green: #1f7a45;--node-grey: #4a525e;--node-red: #a8322a;--node-amber: #8a5a00;--edge: #9aa3af}*{box-sizing:border-box}body{margin:0;background:var(--bg);color:var(--ink);font:16px/1.5 system-ui,-apple-system,Segoe UI,Roboto,sans-serif}main{max-width:1040px;margin:0 auto;padding:16px}h1{font-size:1.5rem;margin:8px 0 4px}h2{font-size:1.1rem;margin:0 0 8px}p{margin:0 0 8px}.muted{color:var(--muted)}.banner{border:2px solid var(--warn);background:var(--surface);color:var(--ink);padding:8px 12px;border-radius:8px;font-weight:600}.top{display:flex;flex-wrap:wrap;gap:8px;justify-content:space-between;align-items:center}.card{background:var(--surface);border:1px solid var(--line);border-radius:10px;padding:14px;margin-top:14px}.grid{display:grid;gap:14px;grid-template-columns:1fr}@media(min-width:800px){.grid{grid-template-columns:1fr 1fr}}.ladder{list-style:none;padding:0;margin:0;display:grid;gap:8px}.rung{border:1px solid var(--line);border-radius:8px;padding:10px 12px;background:var(--surface)}.rung[data-reached=true]{background:var(--rung-1)}.rung[aria-current=step]{outline:3px solid var(--focus);outline-offset:1px}.rung strong{display:inline-block;min-width:2.2em}button,input,select{font:inherit}button{min-height:44px;min-width:44px;padding:8px 14px;border-radius:8px;border:1px solid var(--ink);background:var(--surface);color:var(--ink);cursor:pointer}button.primary{background:var(--brand, var(--ink));color:var(--brand-on, var(--surface))}button.bad{border-color:var(--bad);color:var(--bad)}button:disabled{opacity:.5;cursor:not-allowed}button:focus-visible,input:focus-visible,select:focus-visible,a:focus-visible{outline:3px solid var(--focus);outline-offset:2px}label{display:block;font-weight:600;margin-top:8px}input[type=number],select,input[type=text]{min-height:44px;padding:6px 10px;border-radius:8px;border:1px solid var(--line);background:var(--surface);color:var(--ink);width:100%;max-width:320px}input[type=range]{width:100%;max-width:420px;min-height:44px;accent-color:var(--focus)}.row{display:flex;flex-wrap:wrap;gap:8px;margin-top:10px;align-items:center}.result{margin-top:10px;padding:10px;border-radius:8px;border:1px solid var(--line)}.result[data-ok=true]{border-color:var(--ok);color:var(--ok)}.result[data-ok=false]{border-color:var(--bad);color:var(--bad)}ol.history,ul.phone{padding-left:18px;margin:0}pre{background:var(--bg);border:1px solid var(--line);border-radius:8px;padding:10px;overflow-x:auto;font-size:.85rem;max-width:100%;white-space:pre-wrap;word-break:break-word}.diagram{height:440px;border:1px solid var(--line);border-radius:10px;background:var(--surface)}.diagram{--xy-attribution-background-color: var(--surface);--xy-background-pattern-dots-color-default: var(--line)}.react-flow__attribution,.react-flow__attribution a{color:var(--muted)}.react-flow__node{color:var(--node-text);border-radius:8px;font-size:12px;width:190px}.node-label strong{display:block}.node-label span{display:block;opacity:.92}.react-flow__edge-path{stroke:var(--edge)}.edge-hot .react-flow__edge-path{stroke:var(--focus);stroke-width:3}.visually-hidden{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap}.presenter{font-size:20px}.presenter h1{font-size:2rem}.presenter h2{font-size:1.4rem}.presenter button{min-height:56px;font-size:1.1rem}.presenter .raw{display:none}