body {
    margin: 0;
    font-family: Arial, Helvetica, sans-serif;
    background: #0f172a;
    color: #e5e7eb;
}

header {
    text-align: center;
    padding: 60px 20px;
    background: linear-gradient(135deg, #2563eb, #1e40af);
}

section {
    padding: 40px 20px;
    max-width: 900px;
    margin: auto;
}

h2 {
    color: #60a5fa;
}

ul li {
    margin: 10px 0;
}

button {
    padding: 12px 20px;
    background: #2563eb;
    color: white;
    border: none;
    cursor: pointer;
    border-radius: 6px;
}

button:hover {
    background: #1d4ed8;
}

footer {
    text-align: center;
    padding: 20px;
    background: #020617;
}