body {
    margin: 0;
    padding: 0;
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
    /* This adds a professional tech-themed background */
    background: linear-gradient(rgba(0, 0, 0, 0.6), rgba(0, 0, 0, 0.6)), 
                url('https://images.unsplash.com/photo-1451187580459-43490279c0fa?auto=format&fit=crop&q=80&w=2072');
    background-size: cover;
    background-position: center;
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
}

.business-card {
    background: rgba(255, 255, 255, 0.95); /* Semi-transparent white */
    padding: 40px;
    border-radius: 15px;
    box-shadow: 0 10px 30px rgba(0,0,0,0.3);
    text-align: center;
    max-width: 450px;
}

h1 {
    color: #1a365d; /* A deep Air Force Blue */
    margin-bottom: 10px;
}

.btn {
    display: inline-block;
    padding: 12px 24px;
    background-color: #2b6cb0; /* Professional Blue */
    color: white;
    text-decoration: none;
    border-radius: 5px;
    transition: background 0.3s;
}

.btn:hover {
    background-color: #2c5282; /* Darker blue when you hover */
}