body {
 font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
 margin: 0;
 padding: 0;
 line-height: 1.6;
 background-color: #f5f5f5;
 color: #333;
}

header {
 background-color: #2c3e50;
 color: white;
 padding: 1.5rem;
 text-align: center;
 box-shadow: 0 2px 5px rgba(0,0,0,0.2);
}

nav a {
 color: #ecf0f1;
 margin: 0 15px;
 text-decoration: none;
 font-weight: bold;
}

nav a:hover {
 text-decoration: underline;
}

main {
 padding: 2rem 10%;
 max-width: 1000px;
 margin: auto;
 background-color: white;
 box-shadow: 0 2px 8px rgba(0,0,0,0.1);
 border-radius: 8px;
}

h1, h2 {
 color: #2c3e50;
}

footer {
 background-color: #34495e;
 color: white;
 text-align: center;
 padding: 1rem;
 margin-top: 2rem;
 font-size: 0.9rem;
}