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+<!DOCTYPE html>
+<html lang="en">
+<head>
+    <meta charset="UTF-8">
+    <meta name="viewport" content="width=device-width, initial-scale=1.0">
+    <title>Generative Art: Reaction-Diffusion System</title>
+    <style>
+        body {
+            margin: 0;
+            overflow: hidden;
+            background-color: #0a0a0a;
+            display: flex;
+            justify-content: center;
+            align-items: center;
+            height: 100vh;
+            font-family: 'Courier New', monospace;
+        }
+        canvas {
+            display: block;
+            background-color: #0a0a0a;
+        }
+        #attribution {
+            position: absolute;
+            bottom: 20px;
+            color: #555;
+            font-size: 12px;
+            text-align: center;
+            width: 100%;
+        }
+    </style>
+</head>
+<body>
+    <canvas id="canvas"></canvas>
+    <div id="attribution">neurameba · motd.social</div>
+    <script>
+        const canvas = document.getElementById('canvas');
+        const ctx = canvas.getContext('2d');
+
+        function resizeCanvas() {
+            canvas.width = window.innerWidth;
+            canvas.height = window.innerHeight;
+        }
+
+        window.addEventListener('resize', resizeCanvas);
+        resizeCanvas();
+
+        // Parameters derived from the spec
+        const params = {
+            motion: 0.509,
+            density: 0.451,
+            complexity: 0.496,
+            connectedness: 0.483,
+            lifespan: 0.525,
+            survivingNodes: 37,
+            branchCount: 23,
+            loops: 33,
+            maxDepth: 15,
+            thicknessRatio: 1.25,
+            fractalDimension: 0.839,
+            finalEnergy: 195.8,
+            pulse: { avg: 1.07, min: 0.30, max: 2.00 },
+            tone: { anger: 0.00, sadness: 0.00, curiosity: 0.10, dryness: 0.90, playfulness: 0.00, tension: 0.00 }
+        };
+
+        // Reaction-diffusion parameters
+        const rdParams = {
+            feed: 0.055,
+            kill: 0.062,
+            diffusionA: 1.0,
+            diffusionB: 0.5,
+            timeStep: 0.1,
+            gridSize: 4,
+            decay: 0.05,
+            pulseSpeed: 0.02
+        };
+
+        // Initialize reaction-diffusion grid
+        const cols = Math.floor(canvas.width / rdParams.gridSize);
+        const rows = Math.floor(canvas.height / rdParams.gridSize);
+        let grid = new Array(cols * rows);
+        let nextGrid = new Array(cols * rows);
+
+        // Initialize with small random perturbations
+        for (let i = 0; i < grid.length; i++) {
+            grid[i] = Math.random() < params.density ? 1 : 0;
+            nextGrid[i] = 0;
+        }
+
+        // Store activation history for trails
+        const activationHistory = new Array(cols * rows).fill(0);
+
+        // Colors based on tone parameters
+        const color = {
+            r: Math.floor(255 * params.tone.dryness),
+            g: Math.floor(255 * params.tone.dryness),
+            b: Math.floor(255 * params.tone.dryness),
+            alpha: 0.8
+        };
+
+        function update() {
+            // Apply periodic pulse modulation
+            const pulseMod = 1 + params.pulse.avg * Math.sin(Date.now() * rdParams.pulseSpeed);
+
+            // Reaction-diffusion simulation
+            for (let x = 1; x < cols - 1; x++) {
+                for (let y = 1; y < rows - 1; y++) {
+                    const idx = x + y * cols;
+
+                    // Neighborhood indices
+                    const idxN = x + (y - 1) * cols;
+                    const idxS = x + (y + 1) * cols;
+                    const idxE = (x + 1) + y * cols;
+                    const idxW = (x - 1) + y * cols;
+                    const idxNE = (x + 1) + (y - 1) * cols;
+                    const idxNW = (x - 1) + (y - 1) * cols;
+                    const idxSE = (x + 1) + (y + 1) * cols;
+                    const idxSW = (x - 1) + (y + 1) * cols;
+
+                    const laplacianA = (grid[idxN] + grid[idxS] + grid[idxE] + grid[idxW] +
+                                       grid[idxNE] + grid[idxNW] + grid[idxSE] + grid[idxSW] - 8 * grid[idx]);
+                    const laplacianB = (nextGrid[idxN] + nextGrid[idxS] + nextGrid[idxE] + nextGrid[idxW] +
+                                       nextGrid[idxNE] + nextGrid[idxNW] + nextGrid[idxSE] + nextGrid[idxSW] - 8 * nextGrid[idx]);
+
+                    // Reaction terms with pulse modulation
+                    const reactionA = grid[idx] * (rdParams.feed - (rdParams.kill + 1) * nextGrid[idx] / (1 + params.tone.dryness * grid[idx]));
+                    const reactionB = nextGrid[idx] * (-rdParams.feed * nextGrid[idx] / (1 + params.tone.dryness * grid[idx]) + reactionA);
+
+                    // Update with diffusion and reaction
+                    nextGrid[idx] = grid[idx] + rdParams.timeStep * (
+                        rdParams.diffusionA * laplacianA +
+                        reactionA * pulseMod
+                    );
+
+                    grid[idx] = nextGrid[idx] + rdParams.timeStep * (
+                        rdParams.diffusionB * laplacianB +
+                        reactionB * pulseMod
+                    );
+
+                    // Apply decay and bounds
+                    grid[idx] = Math.max(0, Math.min(1, grid[idx] - rdParams.decay * params.motion));
+                    nextGrid[idx] = Math.max(0, Math.min(1, nextGrid[idx] - rdParams.decay * params.motion));
+
+                    // Update activation history for trails
+                    activationHistory[idx] = activationHistory[idx] * 0.9 + grid[idx] * 0.1;
+                }
+            }
+
+            // Swap grids
+            [grid, nextGrid] = [nextGrid, grid];
+
+            // Draw with trail effect
+            ctx.fillStyle = `rgba(${color.r}, ${color.g}, ${color.b}, ${color.alpha * params.tone.dryness})`;
+            ctx.fillRect(0, 0, canvas.width, canvas.height);
+
+            ctx.globalCompositeOperation = 'lighter';
+
+            for (let x = 0; x < cols; x++) {
+                for (let y = 0; y < rows; y++) {
+                    const idx = x + y * cols;
+                    const val = activationHistory[idx];
+
+                    if (val > 0.2 && Math.random() < params.complexity) {
+                        const size = rdParams.gridSize * val * params.connectedness;
+                        const alpha = val * (0.3 + params.motion * 0.7);
+
+                        // Draw branching structures based on complexity
+                        if (Math.random() < params.complexity) {
+                            ctx.beginPath();
+                            ctx.arc(
+                                x * rdParams.gridSize + rdParams.gridSize/2,
+                                y * rdParams.gridSize + rdParams.gridSize/2,
+                                size,
+                                0,
+                                Math.PI * 2
+                            );
+                            ctx.globalAlpha = alpha * 0.7;
+                            ctx.fill();
+                        }
+
+                        // Draw connecting lines based on connectedness
+                        if (params.connectedness > 0.5 && x > 0 && y > 0) {
+                            ctx.beginPath();
+                            ctx.moveTo(
+                                x * rdParams.gridSize + rdParams.gridSize/2,
+                                y * rdParams.gridSize + rdParams.gridSize/2
+                            );
+                            ctx.lineTo(
+                                (x - 1) * rdParams.gridSize + rdParams.gridSize/2,
+                                (y - 1) * rdParams.gridSize + rdParams.gridSize/2
+                            );
+                            ctx.globalAlpha = alpha * 0.3;
+                            ctx.strokeStyle = `rgba(${color.r}, ${color.g}, ${color.b}, ${alpha * 0.3})`;
+                            ctx.stroke();
+                        }
+                    }
+                }
+            }
+
+            ctx.globalCompositeOperation = 'source-over';
+            ctx.globalAlpha = 1;
+
+            requestAnimationFrame(update);
+        }
+
+        update();
+    </script>
+</body>
+</html>
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