:root {
    --primary-color: #4a90e2;
    --text-color: #333;
    --background-color: #fff;
    --secondary-background: #f5f5f5;
}

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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, 'Open Sans', 'Helvetica Neue', sans-serif;
    line-height: 1.6;
    color: var(--text-color);
    background-color: var(--background-color);
}

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

header {
    background-color: var(--primary-color);
    color: white;
    padding: 2rem 0;
    margin-bottom: 2rem;
}

header .container {
    text-align: center;
}

h1 {
    font-size: 2.5rem;
    margin-bottom: 1rem;
}

h2 {
    font-size: 1.8rem;
    margin: 2rem 0 1rem;
    color: var(--primary-color);
}

p {
    margin-bottom: 1rem;
}

.nav-links {
    margin: 2rem 0;
    display: flex;
    justify-content: center;
    gap: 1rem;
}

.nav-links a {
    color: var(--primary-color);
    text-decoration: none;
    padding: 0.5rem 1rem;
    border: 2px solid var(--primary-color);
    border-radius: 4px;
    transition: all 0.3s ease;
}

.nav-links a:hover {
    background-color: var(--primary-color);
    color: white;
}

.content {
    background-color: var(--secondary-background);
    padding: 2rem;
    border-radius: 8px;
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
}

footer {
    text-align: center;
    padding: 2rem 0;
    margin-top: 2rem;
    color: #666;
}