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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    line-height: 1.6;
    color: #333;
    background: #f8f9fa;
}

header {
    background: #2c3e50;
    color: white;
    text-align: center;
    padding: 2rem 0;
}

header h1 {
    font-size: 2.5rem;
    margin-bottom: 0.5rem;
}

header p {
    font-size: 1.2rem;
    opacity: 0.9;
}

main {
    max-width: 800px;
    margin: 0 auto;
    padding: 2rem;
}

section {
    background: white;
    margin: 2rem 0;
    padding: 2rem;
    border-radius: 8px;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
}

h2 {
    color: #2c3e50;
    margin-bottom: 1rem;
    border-bottom: 2px solid #3498db;
    padding-bottom: 0.5rem;
}

h3 {
    color: #34495e;
    margin: 1rem 0 0.5rem 0;
}

ul {
    margin-left: 2rem;
    margin-top: 1rem;
}

li {
    margin: 0.5rem 0;
}

.game {
    border-left: 4px solid #3498db;
    padding-left: 1rem;
}

footer {
    text-align: center;
    padding: 2rem;
    color: #7f8c8d;
    background: #ecf0f1;
}

@media (max-width: 600px) {
    main {
        padding: 1rem;
    }
    
    section {
        padding: 1rem;
    }
}