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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Arial, sans-serif;
    line-height: 1.6;
    color: #000;
    background-color: #fff;
}

header {
    background-color: #000;
    color: #fff;
    padding: 2rem;
    text-align: center;
}

header h1 {
    font-size: 2rem;
    font-weight: 600;
}

nav {
    background-color: #fff;
    border-bottom: 2px solid #000;
    padding: 1rem 2rem;
}

nav ul {
    list-style: none;
    display: flex;
    gap: 2rem;
    justify-content: center;
}

nav a {
    color: #000;
    text-decoration: none;
    font-weight: 500;
    transition: opacity 0.3s;
}

nav a:hover {
    opacity: 0.6;
}

main {
    max-width: 800px;
    margin: 3rem auto;
    padding: 0 2rem;
}

section {
    margin-bottom: 3rem;
}

h2 {
    font-size: 1.5rem;
    margin-bottom: 1rem;
    font-weight: 600;
}

p {
    margin-bottom: 1rem;
}

button {
    background-color: #000;
    color: #fff;
    border: none;
    padding: 0.75rem 1.5rem;
    font-size: 1rem;
    cursor: pointer;
    font-family: inherit;
    transition: opacity 0.3s;
}

button:hover {
    opacity: 0.8;
}

footer {
    background-color: #000;
    color: #fff;
    text-align: center;
    padding: 2rem;
    margin-top: 4rem;
}