/* 防止 iOS 自动缩放 */
input,
textarea {
    font-size: 16px;
}

/* Toast 样式 */
.toast {
    visibility: hidden;
    opacity: 0;
    position: fixed;
    min-width: 250px;
    left: 50%;
    top: 50px;
    transform: translate(-50%, -50%);
    background: rgba(0, 0, 0, 0.85);
    color: white;
    padding: 16px;
    border-radius: 8px;
    font-size: 17px;
    text-align: center;
    z-index: 1;
    transition: opacity 0.5s, visibility 0.5s;
}

.toast.show {
    visibility: visible;
    opacity: 1;
}