body {
    font-family: Arial, sans-serif;
    max-width: 900px;
    margin: auto;
    padding: 2rem;
    line-height: 1.6;
    background: #0d1117;
    color: #f0f6fc;
}

header {
    text-align: center;
    margin-bottom: 3rem;
}

h1 {
    font-size: 3rem;
}

.hero {
    margin-bottom: 3rem;
}

.button {
    display: inline-block;
    background: #238636;
    color: white;
    text-decoration: none;
    padding: 12px 24px;
    border-radius: 6px;
}

.button:hover {
    background: #2ea043;
}

footer {
    margin-top: 4rem;
    opacity: .7;
}