/* =========================================
   About 关于我们
   PC 两列（略缩小）
   Mobile 一列
========================================= */

.demo-show {
    padding: 70px 0;
}

/* 标题区域 */
.demo-show-box {
    text-align: center;
    padding: 0 60px 40px 60px;
    box-sizing: border-box;
}

.demo-show-title {
    font-size: 30px;
    font-weight: bold;
    margin-bottom: 18px;
}

.demo-show-tip {
    font-size: 15px;
    max-width: 900px;
    margin: 0 auto 40px auto;
    line-height: 1.8;
    font-weight: 500;
    color: #333;
}

/* ===============================
   取消横向滚动
================================= */

.demo-show-box-box {
    white-space: normal;
    overflow-x: visible;
    width: 100%;
    box-sizing: border-box;
    margin-top: 30px;
}

/* ===============================
   两列布局容器
================================= */

.demo-show-flex {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 30px;
}

/* ===============================
   卡片样式（缩小版）
================================= */

.demo-show-c-demo-box {
    width: calc(45% - 15px);   /* 比50%小一点，视觉更精致 */
    position: relative;
    aspect-ratio: 16 / 10;     /* 稍微扁一点，更商务 */
    overflow: hidden;
    border-radius: 14px;
    cursor: pointer;
    transition: transform .3s ease;
}

/* 背景图 */
.demo-show-c-demo-back-img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    border-radius: 14px;
    /*filter: blur(5px);*/
    transition: all 0.4s ease;
}

/* 中间文字 */
.c-demo-text {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    font-size: 18px;
    font-weight: bold;
    color: #ffffff;
    box-shadow: 0 0 8px rgba(0, 0, 0, 0.3);
    letter-spacing: 4px;
    width: 100%;
    text-align: center;
    transition: opacity .3s ease;
}

/* Hover 动画 */
.demo-show-c-demo-box:hover {
    transform: translateY(-4px);
}

.demo-show-c-demo-box:hover .demo-show-c-demo-back-img {
    transform: scale(1.06);
    filter: blur(0);
}

.demo-show-c-demo-box:hover .c-demo-text {
    opacity: 0.1;
}

/* ===============================
   手机端
================================= */

@media (max-width: 768px){

    .demo-show-box {
        padding: 0 20px 30px 20px;
    }

    .demo-show-title {
        font-size: 24px;
    }

    .demo-show-tip {
        font-size: 14px;
    }

    .demo-show-flex {
        gap: 18px;
    }

    /* 手机一列 */
    .demo-show-c-demo-box {
        width: 100%;
        aspect-ratio: 16 / 9;
    }

    .c-demo-text {
        font-size: 16px;
        letter-spacing: 3px;
    }
}