.wp-bis-form {
    margin: 1rem 0;
    padding: 1rem;
    border: 1px solid #e0e0e0;
    border-radius: 6px;
    background: #fafafa;
}
.wp-bis-label {
    font-weight: 600;
    margin-bottom: 0.5rem;
    color: #d32f2f;
}
.wp-bis-input-group {
    display: flex;
    gap: 0.5rem;
    flex-wrap: wrap;
}
.wp-bis-email {
    flex: 1;
    min-width: 200px;
}
.wp-bis-message {
    margin-top: 0.5rem;
    font-size: 0.9rem;
}