* {
    box-sizing: border-box;
    font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

body {
    margin: 0;
    background: #f5f7fa;
    color: #222;
}

.container {
    max-width: 600px;
    margin: 80px auto;
    padding: 20px;
    text-align: center;
}

h1 {
    font-size: 2.2rem;
    margin-bottom: 8px;
}

.subtitle {
    color: #555;
    margin-bottom: 30px;
}

.card {
    background: white;
    border-radius: 8px;
    padding: 30px;
    box-shadow: 0 8px 20px rgba(0,0,0,0.08);
}

.download-btn {
    display: inline-block;
    margin: 20px 0;
    padding: 14px 28px;
    font-size: 1.1rem;
    color: white;
    background: #0066cc;
    text-decoration: none;
    border-radius: 6px;
    transition: background 0.2s ease;
}

.download-btn:hover {
    background: #004fa3;
}

.note {
    font-size: 0.9rem;
    color: #666;
    margin-top: 20px;
}

.footer {
    margin-top: 40px;
    font-size: 0.85rem;
    color: #777;
}