body { 
    background-color: #0f172a; 
    color: #10b981; 
    font-family: Arial, sans-serif; 
    display: flex; 
    justify-content: center; 
    align-items: center; 
    height: 100vh; 
    margin: 0; 
    text-align: center; 
}
.painel { 
    border: 1px solid #3b82f6; 
    padding: 40px; 
    border-radius: 8px; 
    background-color: #1e293b; 
    box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.5); 
}
.ulid-box { 
    margin-top: 20px; 
    padding: 15px; 
    background-color: #0f172a; 
    border: 1px dashed #3b82f6; 
    border-radius: 4px; 
    font-family: monospace; 
    font-size: 1.2rem; 
    color: #38bdf8; 
    letter-spacing: 2px;
}