body {
    margin: 0;
    font-family: system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    background: linear-gradient(135deg, #0f2027, #203a43, #2c5364);
    color: white;
    height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
}

.card {
    background: rgba(0, 0, 0, 0.4);
    padding: 3rem 4rem;
    border-radius: 16px;
    text-align: center;
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.4);
}

h1 {
    font-size: 3rem;
    margin-bottom: 0.5rem;
}

p {
    font-size: 1.2rem;
    opacity: 0.85;
}

.glow {
    text-shadow: 0 0 12px rgba(0, 200, 255, 0.8);
}