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

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
    background: #f5f5f5;
    color: #333;
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
}

main {
    text-align: center;
}

h1 {
    font-size: 2rem;
    font-weight: 300;
    margin-bottom: 2rem;
}

nav {
    display: flex;
    gap: 1rem;
    flex-wrap: wrap;
    justify-content: center;
}

nav a {
    display: block;
    padding: 1rem 2rem;
    background: #fff;
    border: 1px solid #ddd;
    border-radius: 8px;
    text-decoration: none;
    color: #333;
    font-size: 1.1rem;
    transition: border-color 0.2s, box-shadow 0.2s;
}

nav a:hover {
    border-color: #999;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.08);
}