* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Segoe UI', Arial, sans-serif;
    line-height: 1.6;
    background-color: #f5f7fa;
}

.header {
    background: linear-gradient(135deg, #1a73e8 0%, #0d47a1 100%);
    color: white;
    padding: 30px 20px;
    text-align: center;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
}

.header h1 {
    font-size: 2.5rem;
    margin-bottom: 10px;
}

.header p {
    font-size: 1.1rem;
    opacity: 0.9;
    max-width: 800px;
    margin: 0 auto;
}

.container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 20px;
}

.visualization-frame {
    width: 100%;
    height: 700px;
    border: none;
    border-radius: 10px;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
    background: rgb(255, 255, 255);
}

.footer {
    text-align: center;
    padding: 20px;
    color: #666;
    font-size: 0.9rem;
    border-top: 1px solid #eaeaea;
    margin-top: 30px;
}

@media (max-width: 768px) {
    .header h1 {
        font-size: 2rem;
    }
    
    .visualization-frame {
        height: 500px;
    }
    
    .container {
        padding: 10px;
        } 
}