* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
    background: #f0f4f8;
    color: #2d3748;
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
}

.container {
    text-align: center;
    padding: 3rem 2rem;
    max-width: 600px;
}

h1 {
    font-size: 2.5rem;
    color: #1b3a5c;
    margin-bottom: 0.5rem;
}

.tagline {
    font-size: 1.1rem;
    color: #718096;
    margin-bottom: 2rem;
}

.btn {
    display: inline-block;
    padding: 0.75rem 2rem;
    background: #1b3a5c;
    color: #ffffff;
    text-decoration: none;
    border-radius: 6px;
    font-size: 1rem;
    transition: background 0.2s;
}

.btn:hover {
    background: #2c5f8a;
}

footer {
    margin-top: 3rem;
    color: #a0aec0;
    font-size: 0.85rem;
}