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

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    color: #333;
    line-height: 1.6;
    background: #f9f9f9;
}

header {
    background: #1a1a2e;
    color: white;
    padding: 2rem;
    text-align: center;
}

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

nav a {
    color: #e0e0e0;
    text-decoration: none;
    margin: 0 1rem;
    font-size: 1.1rem;
    transition: color 0.2s;
}

nav a:hover {
    color: #00d4ff;
}

main {
    max-width: 900px;
    margin: 3rem auto;
    padding: 0 2rem;
}

section {
    margin-bottom: 3rem;
    background: white;
    padding: 2rem;
    border-radius: 8px;
    box-shadow: 0 2px 8px rgba(0,0,0,0.08);
}

section h2 {
    font-size: 1.8rem;
    margin-bottom: 1rem;
    color: #1a1a2e;
    border-bottom: 2px solid #00d4ff;
    padding-bottom: 0.5rem;
}

footer {
    text-align: center;
    padding: 2rem;
    background: #1a1a2e;
    color: #aaa;
}