body {
            margin: 0;
            padding: 20px;
            font-family: 'Arial', sans-serif;
            background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
            min-height: 100vh;
            color: #333;
        }
        
        .container {
            max-width: 1400px;
            margin: 0 auto;
            background: rgba(255, 255, 255, 0.95);
            border-radius: 20px;
            padding: 30px;
            box-shadow: 0 20px 40px rgba(0,0,0,0.1);
            backdrop-filter: blur(10px);
        }
        
        h1 {
            text-align: center;
            color: #4a5568;
            font-size: 2.5em;
            margin-bottom: 30px;
            text-shadow: 2px 2px 4px rgba(0,0,0,0.1);
        }
        
        .mindmap {
            width: 100%;
            height: 800px;
            position: relative;
            overflow: hidden;
            border-radius: 15px;
            background: radial-gradient(circle at center, #f7fafc 0%, #edf2f7 100%);
            border: 2px solid #e2e8f0;
        }
        
        .node {
            position: absolute;
            padding: 15px 20px;
            border-radius: 15px;
            cursor: pointer;
            transition: all 0.3s cubic-bezier(0.4, 0, 0.6, 1);
            font-weight: 600;
            text-align: center;
            min-width: 140px;
            box-shadow: 0 8px 25px rgba(0,0,0,0.1);
            border: 2px solid transparent;
            backdrop-filter: blur(5px);
        }
        
        .node:hover {
            transform: scale(1.1) translateY(-5px);
            box-shadow: 0 15px 35px rgba(0,0,0,0.2);
            z-index: 100;
        }
        
        .node.central {
            background: linear-gradient(135deg, #ff6b6b, #ee5a52);
            color: white;
            font-size: 18px;
            font-weight: 700;
            min-width: 200px;
            border: 3px solid #fff;
        }
        
        .node.formula {
            background: linear-gradient(135deg, #4ecdc4, #44a08d);
            color: white;
            font-size: 14px;
        }
        
        .node.theory {
            background: linear-gradient(135deg, #45b7d1, #96c93d);
            color: white;
        }
        
        .node.primes {
            background: linear-gradient(135deg, #f093fb, #f5576c);
            color: white;
        }
        
        .node.special {
            background: linear-gradient(135deg, #ffecd2, #fcb69f);
            color: #333;
            border: 2px solid #ff8a65;
        }
        
        .node.algebra {
            background: linear-gradient(135deg, #a8edea, #fed6e3);
            color: #333;
            border: 2px solid #26c6da;
        }
        
        .connection {
            position: absolute;
            background: linear-gradient(90deg, transparent, rgba(74, 85, 104, 0.3), transparent);
            transform-origin: left center;
            height: 3px;
            z-index: 1;
            opacity: 0.7;
            transition: all 0.3s ease;
        }
        
        .connection:hover {
            height: 5px;
            opacity: 1;
            background: linear-gradient(90deg, transparent, rgba(255, 107, 107, 0.6), transparent);
        }
        
        .connection.primary {
            background: linear-gradient(90deg, transparent, rgba(255, 107, 107, 0.5), transparent);
            height: 4px;
        }
        
        .legend {
            margin-top: 30px;
            padding: 20px;
            background: rgba(247, 250, 252, 0.8);
            border-radius: 15px;
            border: 1px solid #e2e8f0;
        }
        
        .legend h3 {
            color: #4a5568;
            margin-bottom: 15px;
        }
        
        .legend-item {
            display: inline-block;
            margin: 5px 15px 5px 0;
            padding: 8px 15px;
            border-radius: 20px;
            font-size: 12px;
            font-weight: 600;
        }
        
        .info-panel {
            position: fixed;
            top: 20px;
            right: 20px;
            width: 300px;
            background: rgba(255, 255, 255, 0.95);
            border-radius: 15px;
            padding: 20px;
            box-shadow: 0 10px 25px rgba(0,0,0,0.1);
            backdrop-filter: blur(10px);
            transform: translateX(320px);
            transition: transform 0.3s ease;
            z-index: 1000;
        }
        
        .info-panel.active {
            transform: translateX(0);
        }
        
        .close-btn {
            float: right;
            cursor: pointer;
            color: #999;
            font-size: 18px;
            font-weight: bold;
        }
        
        .pulse {
            animation: pulse 2s infinite;
        }
        
        @keyframes pulse {
            0% { box-shadow: 0 0 0 0 rgba(255, 107, 107, 0.7); }
            70% { box-shadow: 0 0 0 10px rgba(255, 107, 107, 0); }
            100% { box-shadow: 0 0 0 0 rgba(255, 107, 107, 0); }
        }
        
        .formula-display {
            font-family: 'Courier New', monospace;
            background: rgba(0,0,0,0.05);
            padding: 5px 8px;
            border-radius: 5px;
            margin: 5px 0;
        }
    body
{
   background-color: #DCDCDC;
   color: #000000;
   font-family: Arial;
   font-weight: normal;
   font-size: 13px;
   line-height: 1.1875;
   margin: 0;
   padding: 0;
}
#Button1
{
   box-sizing: border-box;
   line-height: 20px;
   text-decoration: none;
   vertical-align: top;
   border: 1px solid #2E6DA4;
   border-radius: 4px;
   background-color: #3370B7;
   background-image: none;
   color: #FFFFFF;
   cursor: default;
   font-family: Arial;
   font-weight: normal;
   font-style: normal;
   font-size: 13px;
   padding: 1px 6px 1px 6px;
   text-align: center;
   -webkit-appearance: none;
   margin: 0;
}
}
#Button1:focus
{
   outline: 0;
}
#Button2
{
   box-sizing: border-box;
   line-height: 20px;
   text-decoration: none;
   vertical-align: top;
   border: 1px solid #2E6DA4;
   border-radius: 4px;
   background-color: #3370B7;
   background-image: none;
   color: #FFFFFF;
   cursor: default;
   font-family: Arial;
   font-weight: normal;
   font-style: normal;
   font-size: 13px;
   padding: 1px 6px 1px 6px;
   text-align: center;
   -webkit-appearance: none;
   margin: 0;
}
}
#Button2:focus
{
   outline: 0;
}