/* 核心：吸顶占位 + 智能固定 */
.product_box .sticky-placeholder {
    height: auto;
    transition: height 0.2s;
}
.product_box .top_menu {
    width: 100%;
    border-bottom: 1px solid #e5e7eb;
    z-index: 9998;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.06);
    background-color: #fff;
    /* 默认不固定，滚动后才固定 */
    position: relative;
    top: auto;
    left: 0;
}
/* 滚动吸顶时的样式 */
.product_box .top_menu.fixed {
    position: fixed;
    /* 这里修改成你的【顶部导航真实高度】，默认 80px */
    top: 70px !important;
}

/* 顶部导航Tab */
.product_box .main-tabs {
    background: #fff;
    border-bottom: 1px solid #e5e7eb;
    padding: 0 20px;
}



.product_box .main-tabs .product_box_flex_sty {
    display: flex;
    flex-wrap: wrap;
}

.product_box .main-tab-item {
    padding: 20px 16px;
    font-size: 18px;
    font-weight: 500;
    color: #666;
    cursor: pointer;
    position: relative;
    transition: color 0.3s;
    white-space: nowrap;
}

.product_box .main-tab-item.active {
    color: #0052d9;
}

.product_box .main-tab-item.active::after {
    content: "";
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    height: 3px;
    background-color: #0052d9;
}

/* 核心：二级Tab + 产品头部 同行布局 */
.product_box .product-top-bar {
    display: flex;
    align-items: flex-start; /* 改为顶部对齐，防止换行后错位 */
    justify-content: space-between;
    background: #fff;
    padding: 20px;
    flex-wrap: wrap;
    gap: 20px;
}

/* 二级Tab 居左 —— 修复：宽度占满，允许自动换行 */
.product_box .sub-tabs-section {
    flex: 1; /* 关键：占满剩余宽度，让子元素能换行 */
    min-width: 280px; /* 防止太窄 */
    padding: 0;
    border-bottom: none;
}

/* 产品头部 居右 */
.product_box .product-header {
    flex: 0 0 auto;
    display: flex;
    justify-content: flex-end;
    align-items: center;
    flex-wrap: wrap;
    gap: 12px;
    padding: 0;
    background: transparent;
}

.product_box .sub-tabs {
    display: flex;
    flex-wrap: wrap; /* 已经支持换行 */
    gap: 12px;
    margin-bottom: 16px;
    width: 100%; /* 占满父级，确保能换行 */
}

.product_box .sub-tab-item {
    flex: 0 0 auto;
    padding: 8px 16px;
    border-radius: 20px;
    background: #f3f4f6;
    font-size: 15px;
    cursor: pointer;
    transition: all 0.3s;
    border: none;
    white-space: nowrap; /* 按钮内文字不换行，保持美观 */
}

.product_box .sub-tab-item.active {
    background: #0052d9;
    color: #fff;
}

/* 所有二级tab组默认隐藏，只显示当前激活的 */
.product_box .sub-tabs-group {
    display: none;
}

.product_box .sub-tabs-group.active {
    display: flex;
}

.product_box .filter-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    align-items: center;
    margin-bottom: 0;
}

.product_box .filter-tag {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 4px 8px;
    background: #e6f0ff;
    color: #0052d9;
    border-radius: 4px;
    font-size: 14px;
}

.product_box .tag-close {
    cursor: pointer;
    font-size: 16px;
    line-height: 1;
}

.product_box .clear-all {
    color: #666;
    font-size: 14px;
    cursor: pointer;
    margin-left: 8px;
}

.product_box .clear-all:hover {
    color: #0052d9;
}

.product_box .product-count {
    font-size: 14px;
    color: #666;
    margin-right: 12px;
}

.product_box .sort-select {
    padding: 6px 12px;
    border: 1px solid #e5e7eb;
    border-radius: 4px;
    font-size: 14px;
    cursor: pointer;
}

.product_box .view-toggle {
    display: flex;
    gap: 8px;
}

.product_box .view-btn {
    width: 28px;
    height: 28px;
    border: 1px solid #e5e7eb;
    border-radius: 4px;
    background: #fff;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
}

.product_box .view-btn.active {
    background: #0052d9;
    color: #fff;
    border-color: #0052d9;
}

/* 产品卡片容器 - 默认3列 */
.product_box .product-container {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
    padding: 20px 0;
    max-width: 1400px;
    margin: 30px auto;
}

/* 4列视图 */
.product_box .product-container.grid-4 {
    grid-template-columns: repeat(4, 1fr);
}

/* 产品卡片 */
.product_box .product-card {
    background: #fff;
    border-radius: 16px;
    overflow: hidden;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.05);
    transition: all 0.3s ease;
    position: relative;
    cursor: pointer;
}

.product_box .product-card:hover {
    box-shadow: 0 8px 24px rgba(0, 82, 217, 0.15);
    transform: translateY(-4px);
}

.product_box .card-image-wrapper {
    position: relative;
    width: 100%;
    height: 280px;
    overflow: hidden;
    background: #f5f5f5;
}

.product_box .product-image {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.4s ease;
}

.product_box .product-card:hover .product-image {
    transform: scale(1.08);
}

/* 卡片标签（NEW/HOT） */
.product_box .card-badge {
    position: absolute;
    top: 12px;
    left: 12px;
    padding: 4px 12px;
    border-radius: 12px;
    font-size: 13px;
    font-weight: bold;
    color: #fff;
    z-index: 2;
}

.product_box .badge-new {
    background: #0052d9;
}

.product_box .badge-hot {
    background: #ff4d4f;
}

/* 查看详情按钮 */
.product_box .detail-btn {
    position: absolute;
    bottom: 20px;
    left: 50%;
    transform: translateX(-50%) translateY(100px);
    padding: 10px 32px;
    background: #0052d9;
    color: #fff;
    border: none;
    border-radius: 8px;
    font-size: 15px;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.3s ease;
    z-index: 3;
    display: flex;
    align-items: center;
    gap: 6px;
}

.product_box .product-card:hover .detail-btn {
    transform: translateX(-50%) translateY(0);
}

.product_box .detail-btn:hover {
    background: #0040b3;
}

/* 卡片操作图标 - 默认隐藏 */
.product_box .card-actions {
    position: absolute;
    top: 12px;
    right: 12px;
    display: flex;
    flex-direction: column;
    gap: 8px;
    z-index: 2;
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s ease;
}

.product_box .product-card:hover .card-actions {
    opacity: 1;
    visibility: visible;
}

.product_box .action-btn {
    width: 32px;
    height: 32px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.9);
    border: none;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.3s;
}

.product_box .action-btn:hover {
    background: #fff;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
}

/* 卡片内容 */
.product_box .card-content {
    padding: 20px;
}

.product_box .product-series {
    font-size: 14px;
    color: #0052d9;
    font-weight: 500;
    margin-bottom: 8px;
}

.product_box .product-name {
    font-size: 18px;
    font-weight: 600;
    margin-bottom: 8px;
    color: #111;
}

.product_box .product-desc {
    font-size: 14px;
    color: #666;
    margin-bottom: 16px;
    line-height: 1.5;
}

.product_box .product-spec {
    display: flex;
    gap: 16px;
    font-size: 14px;
    color: #666;
    margin-bottom: 16px;
    padding-bottom: 16px;
    border-bottom: 1px solid #f0f0f0;
}

.product_box .product-footer {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.product_box .product-model {
    font-size: 14px;
    color: #999;
}

.product_box .more-link {
    font-size: 14px;
    color: #0052d9;
    text-decoration: none;
    display: flex;
    align-items: center;
    gap: 4px;
}

.product_box .more-link:hover {
    text-decoration: underline;
}

/* 产品数据存储区（页面隐藏，仅用于数据读取） */
.product_box .product-data-store {
    display: none;
}

/* 空产品状态 */
.product_box .empty-product {
    grid-column: 1/-1;
    text-align: center;
    padding: 80px 20px;
    color: #999;
    font-size: 16px;
}

/* 联系技术顾问 */
/* 外层容器，实现渐变色背景和居中布局 */
.product-consult-section {
    width: 100%;
    padding: 80px 20px;
    background: linear-gradient(90deg, #001a66 0%, #0052ff 100%);
    text-align: center;
    color: #fff;
}

.product-consult-section h2 {
    font-size: 28px;
    font-weight: bold;
    margin-bottom: 20px;
}

.product-consult-section p {
    font-size: 15px;
    color: rgba(255, 255, 255, 0.75);
    margin-bottom: 50px;
    line-height: 1.5;
}

/* 按钮容器 */
.product-consult-section .button-group {
    display: flex;
    justify-content: center;
    gap: 30px;
    flex-wrap: wrap;
}

/* 主按钮样式 */
.product-consult-section .btn-primary {
    padding: 10px 30px;
    background-color: #ffffff;
    color: #0052ff;
    border: none;
    border-radius: 50px;
    font-size: 14px;
    font-weight: bold;
    cursor: pointer;
    transition: all 0.3s ease;
}

.product-consult-section .btn-primary:hover {
    background-color: #f0f0f0;
}

/* 次按钮样式 */
.product-consult-section .btn-secondary {
    padding: 10px 30px;
    background-color: transparent;
    color: #ffffff;
    border: 2px solid rgba(255, 255, 255, 0.7);
    border-radius: 50px;
    font-size: 14px;
    font-weight: bold;
    cursor: pointer;
    transition: all 0.3s ease;
}

.product-consult-section .btn-secondary:hover {
    background-color: rgba(255, 255, 255, 0.1);
    border-color: #ffffff;
}

/* 响应式适配 */
@media (max-width: 1200px) {
    .product_box .product-container {
        grid-template-columns: repeat(2, 1fr) !important;
    }
}

@media (max-width: 768px) {
    .product_box .main-tabs {
        padding: 0;
    }

    .product_box .main-tabs .product_box_flex_sty{
        padding:0  10px !important;
    }
    .product_box .main-tab-item {
        padding: 6px 5px;
        font-size: 14px;
    }
    
    .product_box .product-header{
        display: none !important;
    }

    .product_box .product-top-bar {
        padding: 6px !important;
        flex-direction: column;
        align-items: flex-start;
    }

    .product_box .product-container {
        grid-template-columns: 1fr !important;
        padding: 12px;
        gap: 16px;
    }
    .product_box .product-container{
        margin: 10px auto;
    }
    .product_box .filter-tags .filter-label{
        font-size: 14px;
    }
    .product_box .card-content{
        padding: 10px;
    }

    .product_box .sub-tab-item{
        font-size: 13px;
        padding: 5px 6px;
    }
    .product_box .sub-tabs{
        gap: 10px;
    }
    .product_box .card-image-wrapper {
        height: 200px;
    }
    .product_box .product-desc{
        font-size: 12px;
    }
    .product_box .product-name{
        font-size: 16px;
    }
    .product-consult-section h2 {
        font-size: 32px;
    }

    .product-consult-section p {
        font-size: 20px;
    }

    .btn-primary,
    .btn-secondary {
        padding: 15px 35px;
        font-size: 20px;
    }
}