.cwob-button {
    display: inline-block;
    background-color: #128C7E; /* hijau gelap ala WhatsApp */
    color: #ffffff;
    padding: 12px 24px;
    border-radius: 8px;
    font-weight: bold;
    text-decoration: none;
    transition: background 0.3s ease;
}
.cwob-button:hover {
    background-color: #0d6e5c; /* versi hover lebih gelap */
}