.switch {
    display: inline-flex;
    align-items: center;
    gap: 12px;
}

.switch-label {
    font-size: 14px;
    color: #333;
    font-weight: 500;
    user-select: none;
    cursor: pointer;
}

.checkbox {
    display: none;
}

.slider {
    width: 50px;
    height: 20px;
    background-color: lightgray;
    border-radius: 20px;
    overflow: hidden;
    display: flex;
    align-items: center;
    border: 4px solid transparent;
    transition: .3s;
    box-shadow: 0 0 10px 0 rgb(0, 0, 0, 0.25) inset;
    cursor: pointer;
    /* CSS变量定义 */
    --switch-color-start: #2196F3;
    --switch-color-end: #2196F3;
}

.slider::before {
    content: '';
    display: block;
    width: 100%;
    height: 100%;
    background-color: #fff;
    transform: translateX(-30px);
    border-radius: 20px;
    transition: .3s;
    box-shadow: 0 0 10px 3px rgb(0, 0, 0, 0.25);
}

.checkbox:checked ~ .slider::before {
    transform: translateX(30px);
    box-shadow: 0 0 10px 3px rgb(0, 0, 0, 0.25);
}

/* 使用CSS变量实现渐变色 */
.checkbox:checked ~ .slider {
    background: linear-gradient(135deg, var(--switch-color-start), var(--switch-color-end));
}

.checkbox:active ~ .slider::before {
    transform: translate(0);
}