body {
    margin: 0;
    font-family: Arial, sans-serif;
    background: linear-gradient(135deg, #0f172a, #1e293b);
    color: #f1f5f9;
}

header {
    text-align: center;
    padding: 40px 20px;
    background-color: #111827;
}

header h1 {
    margin: 0;
    font-size: 32px;
}

.container {
    max-width: 900px;
    margin: 40px auto;
    background-color: #1e293b;
    padding: 30px;
    border-radius: 12px;
    box-shadow: 0 10px 25px rgba(0,0,0,0.4);
    line-height: 1.8;
    font-size: 18px;
}

footer {
    text-align: center;
    padding: 20px;
    background-color: #111827;
    margin-top: 40px;
    font-size: 14px;
    color: #94a3b8;
}

@media (max-width: 600px) {
    .container {
        margin: 20px;
        padding: 20px;
        font-size: 16px;
    }
}