/* 主体内容区域样式 */
.introduce {
    position: relative;
    overflow: hidden;
}

.intro-item2 {
    padding:40px 0;
}

.item-cont {
    position: relative;
}

/* 主内容容器 - 左侧菜单和右侧内容作为整体 */
.mainBox {
    display: flex;
    background: rgba(255, 255, 255, 0.7);
    border-radius: 8px;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.08);
    min-height: 600px;
    /* 移除overflow:hidden以允许左侧菜单随内容滚动 */
}

/* 左侧菜单样式 */
.mainBox .leftMenu {
    width: 280px;
    flex-shrink: 0;
    background: rgba(240, 247, 255, 0.7);
    padding: 20px 0;
    border-right: 1px solid #e0e8f0;
}

.mainBox .leftMenu .menu {
    margin: 0;
    padding: 0;
    list-style: none;
}

.mainBox .leftMenu .menu li {
    margin-bottom: 10px;
    transition: all 0.3s ease;
}

.mainBox .leftMenu .menu li a {
    display: block;
    padding: 15px 20px;
    color: #333;
    text-decoration: none;
    border-radius: 0;
    font-size: 16px;
    transition: all 0.3s ease;
    background: transparent;
    border: none;
    border-left: 4px solid transparent;
    font-weight: 500;
}

/* 鼠标悬停效果 */
.mainBox .leftMenu .menu li a:hover {
    background: #e3f2fd;
    color: #315DB4;
    border-left-color: #315DB4;
    transform: translateX(5px);
}

/* 激活状态样式 */
.mainBox .leftMenu .menu li a.menuActive {
    background: #315DB4;
    color: white;
    border-left-color: #0d47a1;
    font-weight: 600;
    box-shadow: 0 4px 10px rgba(30, 136, 229, 0.2);
}

/* 右侧内容区域样式 */
.mainBox .rightContent {
    flex: 1;
    padding: 30px;
    min-height: 500px;
}

/* 产品内容展示区 */
.product-content {
    display: none;
}

/* 产品卡片样式 */
.product-card {
    margin-bottom: 30px;
}

.product-content.active {
    display: block;
    animation: fadeIn 0.5s ease;
}

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.product-info {
    flex: 1;
    padding-left: 30px;
    display: flex;
    flex-direction: column;
}

.product-image {
    width: 300px;
    height: 200px;
    flex-shrink: 0;
    overflow: hidden;
}

.product-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.5s ease;
}
.product-img{
}

.product-name {
    font-size: 32px;
    color: #315DB4;
    margin-bottom: 10px;
}

.product-desc {
    color: #333;
    line-height: 2;
    margin-bottom: 20px;
    flex: 1;
    font-size:18px;
    text-align:center;
}
.content-desc{
    margin-left:20px;
    display: flex;
    flex-direction: column;
    flex: 1;
}
.view-detail-btn {
    display: block;
    background: #315DB4;
    color: white;
    padding: 12px 24px;
    border-radius: 20px;
    transition: all 0.3s ease;
    margin: 20px auto 0 auto;
    cursor: pointer;
    width: 150px;
    text-align: center;
    text-decoration: none;
}
.product-main{
    margin-top:40px;
    display: flex;
    align-items: center;
    gap:20px;
}

.view-detail-btn:hover {
    background: #1565c0;
    transform: translateY(-2px);
}
/* 响应式设计 */
@media screen and (max-width: 1200px) {
    .mainBox {
        flex-direction: column;
    }
    
    .mainBox .leftMenu {
        width: 100%;
    }
    
    .mainBox .leftMenu .menu {
        display: flex;
        flex-wrap: wrap;
        gap: 10px;
    }
    
    .mainBox .leftMenu .menu li {
        margin-bottom: 0;
        flex: 1 1 auto;
        min-width: 150px;
    }
    
 
    
    .product-image {
        width: 100%;
        height: 250px;
    }
}

@media screen and (max-width: 767px) {
    .intro-item2 {
        padding: 40px 0;
    }
    
    .mainBox .rightContent {
        padding: 20px;
    }
    
    .product-name {
        font-size: 20px;
    }
    
    .mainBox .leftMenu .menu li {
        min-width: 100%;
    }
}