.copy-post-btn {
    background-color: #0073aa;
    color: #fff;
    padding: 10px 15px;
    border: none;
    cursor: pointer;
    margin: 10px 0;
    transition: background-color 0.3s ease;
}

.copy-post-btn:hover {
    background-color: #005177;
}

.copy-post-btn.copied {
    background-color: #28a745; /* 绿色 */
}

.copy-post-btn.failed {
    background-color: #dc3545; /* 红色 */
}