#openDialogBtn {
    padding: 10px 20px;
    font-size: 16px;
    border: none;
    border-radius: 8px;
    background-color: #007bff;
    color: white;
    cursor: pointer;
}

dialog {
    padding: 40px 30px;
    border: none;
    border-radius: 12px;
    box-shadow: 0 8px 20px rgba(0, 0, 0, 0.25);
    min-width: 400px;
    text-align: center;

    /* 全屏居中关键部分 */
    position: fixed;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    margin: 0;
}

dialog::backdrop {
    background: rgba(0, 0, 0, 0.3);
}

dialog p {
    font-size: 20px;
    margin-bottom: 30px;
}

menu {
    display: flex;
    justify-content: center;
    gap: 40px;
    padding: 0;
    margin: 0;
}

menu button {
    width: 120px;
    height: 42px;
    font-size: 16px;
    border: none;
    border-radius: 6px;
    cursor: pointer;
    transition: background 0.3s;
}

.cancel-btn {
    background-color: #ccc;
    color: #333;
}

dialog#myDialog p {
  color: black;
}

.cancel-btn:hover {
    background-color: #bbb;
}

.confirm-btn {
    background-color: #007bff;
    color: white;
}

.confirm-btn:hover {
    background-color: #0069d9;
}

#myDialog {
  z-index: 15000;
}