body {
    font-family: 'Segoe UI', sans-serif;
    background: #f5f8fa;
    color: #333;
}
.container {
    max-width: 900px;
    margin: 0 auto;
    padding: 2rem;
}
.header {
    margin-bottom: 2rem;
}
h1, h2 {
    color: #2c3e50;
}
ul, li {
    margin-left: 1.2rem;
}
.footer {
    margin-top: 2rem;
    font-size: 0.9rem;
    color: #888;
    text-align: center;
}