/* 产品介绍 */
.portfolio-item-wrapper {
    position: relative;
    border-radius: 6px;
    overflow: hidden;
    margin-bottom: 30px;
}

.portfolio-item-wrapper:hover .portfolio-img img {
    -webkit-transform: scale(1.1);
    transform: scale(1.1);
}

.portfolio-item-wrapper .portfolio-img img {
    width: 100%;
    -webkit-transition: all 0.4s ease;
    transition: all 0.4s ease;
}

.portfolio-item-wrapper .portfolio-overlay {
    position: absolute;
    left: 15px;
    right: 15px;
    bottom: 15px;
    background-color: rgba(255, 255, 255, 0.7);
    padding: 20px 35px 20px 20px;
    border-radius: 5px;
    -webkit-box-shadow: 0px 5px 10px rgba(0, 0, 0, 0.096);
    box-shadow: 0px 5px 10px rgba(0, 0, 0, 0.096);
    display: inline-block;
}

.portfolio-item-wrapper .portfolio-overlay .overlay-content h4 {
    margin-top: 5px;
    font-size: 16px;
    font-weight: 700;
    line-height: 28px;
}

.portfolio-item-wrapper .portfolio-overlay .overlay-content .border-btn {
    padding: 8px 27px;
    color: #fff;
    border: 2px solid #fff;
}

.portfolio-item-wrapper .portfolio-overlay .overlay-content .border-btn:hover {
    color: #7e57ff;
    background: #fff;
}

.shadow-box {
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.1);
    padding: 20px;
    margin: 20px;
    background-color: #fff;
}

.hover-container {
    position: relative;
    display: inline-block;
}

.popup {
    visibility: hidden;
    width: 300px;
    background-color: #555;
    color: #fff;
    text-align: center;
    border-radius: 6px;
    position: absolute;
    z-index: 1;
    opacity: 0; /* 初始透明度为0 */
    transition: opacity 0.3s; /* 过渡效果 */
}

.hover-container:hover .popup {
    visibility: visible;
    opacity: 1; /* 鼠标悬停时变为不透明 */
}