/* ===== 全局重置 ===== */
        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
.page-wrapper {
            max-width: 1400px;
            margin: 0 auto 50px;
            background: #ffffff;
            border-radius: 20px;
            box-shadow: 0 10px 40px rgba(0, 0, 0, 0.06);
            overflow: hidden;
            padding: 36px 40px 48px;
			
        }

        /* ===== 头部 ===== */
        .page-header {
            display: flex;
            justify-content: space-between;
            align-items: flex-end;
            flex-wrap: wrap;
            gap: 16px 24px;
            margin-bottom: 32px;
            padding-bottom: 20px;
            border-bottom: 2px solid #e6ecf3;
        }

        .page-header .title-group h1 {
            font-size: 30px;
            font-weight: 700;
            color: #0a1a2b;
            letter-spacing: -0.5px;
        }

        .page-header .title-group .sub {
            font-size: 14px;
            color: #5e7188;
            margin-top: 4px;
        }

        .page-header .result-count {
            background: #eef2f9;
            padding: 8px 22px;
            border-radius: 40px;
            font-size: 15px;
            color: #2a405a;
        }

        .page-header .result-count strong {
            font-weight: 700;
            color: #0047b3;
        }

        /* ===== 左右布局 ===== */
        .product-layout {
            display: flex;
            gap: 40px;
            align-items: flex-start;
        }

        /* ===== 筛选栏 ===== */
        .filter-sidebar {
            flex: 0 0 250px;
            background: #f8faff;
            border-radius: 16px;
            padding: 24px 20px 28px;
            border: 1px solid #e2e9f2;
            position: sticky;
            top: 24px;
            align-self: flex-start;
            max-height: calc(100vh - 70px);
            overflow-y: auto;
            transition: opacity 0.3s;
        }

        .filter-sidebar.hidden {
            display: none;
        }

        .filter-sidebar::-webkit-scrollbar {
            width: 4px;
        }
        .filter-sidebar::-webkit-scrollbar-thumb {
            background: #c8d3e0;
            border-radius: 8px;
        }

        .filter-sidebar h3 {
            font-size: 17px;
            font-weight: 600;
            color: #0a1a2b;
            margin-bottom: 22px;
            letter-spacing: 0.3px;
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .filter-sidebar h3::after {
            content: '';
            flex: 1;
            height: 1px;
            background: #dce4ed;
        }

        .filter-group {
            margin-bottom: 28px;
        }
        .filter-group:last-child {
            margin-bottom: 0;
        }

        .filter-group .filter-label {
            display: block;
            font-size: 13px;
            font-weight: 600;
            color: #3e5670;
            text-transform: uppercase;
            letter-spacing: 0.5px;
            margin-bottom: 10px;
        }

        .filter-group label {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 14px;
            color: #1f334a;
            padding: 4px 0;
            cursor: pointer;
            transition: color 0.15s;
        }

        .filter-group label:hover {
            color: #0047b3;
        }

        .filter-group input[type="checkbox"] {
            width: 16px;
            height: 16px;
            accent-color: #0047b3;
            flex-shrink: 0;
            cursor: pointer;
        }

        .filter-group .check-group {
            display: flex;
            flex-direction: column;
            gap: 2px;
        }

        .btn-filter {
            width: 100%;
            padding: 12px 0;
            background: #0047b3;
            color: white;
            border: none;
            border-radius: 40px;
            font-size: 15px;
            font-weight: 600;
            cursor: pointer;
            transition: background 0.2s, transform 0.1s;
            margin-top: 12px;
        }

        .btn-filter:hover {
            background: #00348a;
        }
        .btn-filter:active {
            transform: scale(0.97);
        }

        .btn-reset {
            width: 100%;
            padding: 10px 0;
            background: transparent;
            color: #4a637f;
            border: 1px solid #d2dce8;
            border-radius: 40px;
            font-size: 14px;
            cursor: pointer;
            transition: background 0.15s;
            margin-top: 10px;
        }

        .btn-reset:hover {
            background: #eef4fc;
        }

        /* ===== 右侧产品区域 ===== */
        .product-grid-wrap {
            flex: 1;
            min-width: 0;
        }

        /* 工具栏 */
        .toolbar {
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 12px 16px;
            margin-bottom: 28px;
        }

        .toolbar .sort-group {
            display: flex;
            align-items: center;
            gap: 6px;
            flex-wrap: wrap;
        }

        .toolbar .sort-group span {
            font-size: 14px;
            color: #3e5670;
            margin-right: 4px;
        }

        .toolbar .sort-group a {
            font-size: 14px;
            color: #3e5670;
            text-decoration: none;
            padding: 4px 16px;
            border-radius: 40px;
            transition: all 0.15s;
            background: transparent;
            border: 1px solid transparent;
            cursor: pointer;
        }

        .toolbar .sort-group a:hover {
            background: #eef4fc;
            color: #0a1a2b;
        }

        .toolbar .sort-group a.active {
            background: #0047b3;
            color: white;
            font-weight: 500;
            border-color: #0047b3;
        }

        .toolbar .view-group {
            display: flex;
            gap: 4px;
        }

        .toolbar .view-group button {
            width: 36px;
            height: 36px;
            border: 1px solid #d2dce8;
            background: white;
            border-radius: 8px;
            font-size: 18px;
            cursor: pointer;
            color: #5e7188;
            transition: all 0.15s;
            display: flex;
            align-items: center;
            justify-content: center;
        }

        .toolbar .view-group button:hover {
            background: #eef4fc;
            border-color: #b0c2d6;
        }

        .toolbar .view-group button.active {
            background: #0047b3;
            border-color: #0047b3;
            color: white;
        }

        /* ===== 产品网格 ===== */
        .product-grid {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
            gap: 24px;
            transition: all 0.2s;
        }

        .product-grid.list-view {
            grid-template-columns: 1fr;
            gap: 16px;
        }

        .product-grid.list-view .product-card {
            flex-direction: row;
            align-items: stretch;
        }

        .product-grid.list-view .product-card .card-img {
            flex: 0 0 140px;
            height: auto;
            min-height: 120px;
            border-bottom: none;
            border-right: 1px solid #e6ecf3;
            padding: 8px;
        }

        .product-grid.list-view .product-card .card-img img {
            width: 100%;
            height: 100%;
            object-fit: contain;
        }

        .product-grid.list-view .product-card .card-header {
            flex: 0 0 160px;
            min-height: auto;
            border-bottom: none;
            border-right: 1px solid #e6ecf3;
            display: flex;
            flex-direction: column;
            justify-content: center;
        }

        .product-grid.list-view .product-card .card-body {
            flex: 1;
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 6px 20px;
            padding: 12px 18px;
        }

        .product-grid.list-view .product-card .card-body .spec-item {
            border-bottom: none;
            padding: 2px 0;
        }

        .product-grid.list-view .product-card .card-body .purpose {
            grid-column: 1 / -1;
            margin-top: 4px;
        }

        .product-grid.list-view .product-card .card-footer {
            flex: 0 0 120px;
            border-top: none;
            border-left: 1px solid #e6ecf3;
            flex-direction: column;
            justify-content: center;
            align-items: center;
            gap: 6px;
        }

        .product-grid.list-view .product-card .card-footer .load-capacity {
            font-size: 16px;
        }

        @media (max-width: 768px) {
            .product-grid.list-view .product-card {
                flex-direction: column;
            }
            .product-grid.list-view .product-card .card-img {
                flex: 0 0 auto;
                height: 100px;
                border-right: none;
                border-bottom: 1px solid #e6ecf3;
            }
            .product-grid.list-view .product-card .card-img img {
                max-height: 80px;
            }
            .product-grid.list-view .product-card .card-header {
                flex: none;
                border-right: none;
                border-bottom: 1px solid #e6ecf3;
            }
            .product-grid.list-view .product-card .card-body {
                grid-template-columns: 1fr;
            }
            .product-grid.list-view .product-card .card-footer {
                flex: none;
                border-left: none;
                border-top: 1px solid #e6ecf3;
                flex-direction: row;
                justify-content: space-between;
                padding: 10px 18px;
            }
        }

        /* ===== 产品卡片 ===== */
        .product-card {
            background: #ffffff;
            border-radius: 16px;
            border: 1px solid #e6ecf3;
            overflow: hidden;
            transition: box-shadow 0.25s, transform 0.2s;
            display: flex;
            flex-direction: column;
            box-shadow: 0 2px 6px rgba(0, 20, 40, 0.02);
            cursor: pointer;
        }

        .product-card:hover {
            box-shadow: 0 12px 32px rgba(0, 40, 80, 0.08);
            transform: translateY(-4px);
            border-color: #c8d8eb;
        }

        .product-card.hidden-page {
            display: none !important;
        }

        .product-card.filter-hidden {
            display: none !important;
        }

        .product-card .card-img {
            background: #f6faff;
            padding: 12px;
            display: flex;
            align-items: center;
            justify-content: center;
            border-bottom: 1px solid #eef2f6;
            min-height: 120px;
            height: 140px;
            transition: background 0.3s;
            overflow: hidden;
        }

        .product-card .card-img img {
            max-width: 100%;
            max-height: 100%;
            width: auto;
            height: auto;
            object-fit: contain;
            display: block;
        }

        .product-card .card-img img.error {
            display: none;
        }

        .product-card .card-img .img-placeholder {
            display: none;
            font-size: 36px;
            color: #b0c8e0;
            text-align: center;
        }

        .product-card .card-img img.error + .img-placeholder {
            display: block;
        }

        .product-card:hover .card-img {
            background: #edf4fe;
        }

        .product-card .card-header {
            padding: 14px 18px 8px;
            min-height: 56px;
        }

        .product-card .card-header .category-tag {
            display: inline-block;
            font-size: 11px;
            font-weight: 600;
            color: #0047b3;
            background: #dde9fc;
            padding: 2px 12px;
            border-radius: 40px;
            letter-spacing: 0.3px;
            margin-bottom: 4px;
        }

        .product-card .card-header .product-name {
            font-size: 17px;
            font-weight: 700;
            color: #0a1a2b;
            line-height: 1.3;
        }

        .product-card .card-body {
            padding: 10px 18px 14px;
            flex: 1;
            display: flex;
            flex-direction: column;
            gap: 4px;
        }

        .product-card .card-body .spec-item {
            display: flex;
            justify-content: space-between;
            font-size: 13px;
            border-bottom: 1px dashed #edf2f8;
            padding-bottom: 3px;
        }

        .product-card .card-body .spec-item:last-child {
            border-bottom: none;
        }

        .product-card .card-body .spec-item .label {
            color: #4a637f;
        }

        .product-card .card-body .spec-item .value {
            color: #0a1a2b;
            font-weight: 500;
        }

        .product-card .card-body .purpose {
            font-size: 13px;
            color: #3e5670;
            background: #f6faff;
            padding: 6px 12px;
            border-radius: 8px;
            margin-top: 4px;
            line-height: 1.5;
            border-left: 3px solid #0047b3;
        }

        .product-card .card-footer {
            padding: 10px 18px 14px;
            border-top: 1px solid #edf2f8;
            display: flex;
            justify-content: space-between;
            align-items: center;
            font-size: 13px;
            color: #5e7188;
        }

        .product-card .card-footer .load-capacity {
            font-weight: 600;
            color: #0047b3;
        }

        .product-card .card-footer .more-link {
            color: #0047b3;
            text-decoration: none;
            font-weight: 500;
            font-size: 13px;
            cursor: pointer;
            background: none;
            border: none;
            padding: 0;
        }

        .product-card .card-footer .more-link:hover {
            text-decoration: underline;
        }

        /* ===== 分页 ===== */
        .pagination {
            display: flex;
            justify-content: center;
            align-items: center;
            gap: 6px;
            margin-top: 44px;
            padding-top: 24px;
            border-top: 1px solid #e6ecf3;
            flex-wrap: wrap;
        }

        .pagination a,
        .pagination span {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            min-width: 40px;
            height: 40px;
            padding: 0 14px;
            border-radius: 40px;
            font-size: 14px;
            text-decoration: none;
            color: #1f334a;
            background: transparent;
            transition: all 0.15s;
            border: 1px solid transparent;
            cursor: pointer;
        }

        .pagination a:hover {
            background: #eef4fc;
            border-color: #d2dce8;
        }

        .pagination a.active {
            background: #0047b3;
            color: white;
            font-weight: 600;
            border-color: #0047b3;
            cursor: default;
        }

        .pagination .ellipsis {
            color: #8a9bb0;
            border: none;
            cursor: default;
        }

        .pagination .disabled {
            opacity: 0.4;
            pointer-events: none;
        }

        /* ============================================================
               详情视图样式
               ============================================================ */
        .detail-view {
            display: none;
            animation: fadeIn 0.3s ease;
        }
        .detail-view.active {
            display: block;
        }

        .list-view-container {
            display: block;
        }
        .list-view-container.hidden {
            display: none;
        }

        @keyframes fadeIn {
            from {
                opacity: 0;
                transform: translateY(10px);
            }
            to {
                opacity: 1;
                transform: translateY(0);
            }
        }

        .detail-back {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 8px 20px;
            background: #eef2f9;
            border: none;
            border-radius: 40px;
            font-size: 14px;
            font-weight: 500;
            color: #1f334a;
            cursor: pointer;
            transition: background 0.2s;
            margin-bottom: 24px;
        }
        .detail-back:hover {
            background: #dce4ed;
        }

        .detail-container {
            background: #f8faff;
            border-radius: 16px;
            padding: 32px 36px;
            border: 1px solid #e6ecf3;
        }

        .detail-container .detail-top {
            display: flex;
            gap: 40px;
            flex-wrap: wrap;
            margin-bottom: 30px;
        }

        .detail-container .detail-img {
            flex: 0 0 280px;
            height: 220px;
            background: #f6faff;
            border-radius: 12px;
            display: flex;
            align-items: center;
            justify-content: center;
            padding: 16px;
            border: 1px solid #eef2f6;
        }

        .detail-container .detail-img img {
            max-width: 110%;
            max-height: 100%;
            object-fit: contain;
        }

        .detail-container .detail-img .img-placeholder {
            font-size: 48px;
            color: #b0c8e0;
        }

        .detail-container .detail-info {
            flex: 1;
            min-width: 200px;
        }

        .detail-container .detail-info .detail-category {
            display: inline-block;
            font-size: 12px;
            font-weight: 600;
            color: #0047b3;
            background: #dde9fc;
            padding: 2px 16px;
            border-radius: 40px;
            margin-bottom: 8px;
        }

        .detail-container .detail-info h2 {
            font-size: 28px;
            font-weight: 700;
            color: #0a1a2b;
            margin-bottom: 12px;
        }

        .detail-container .detail-info .detail-desc {
            font-size: 15px;
            color: #3e5670;
            line-height: 1.8;
            margin-bottom: 16px;
        }

        .detail-container .detail-info .detail-meta {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(160px, 1fr));
            gap: 8px 24px;
            background: white;
            padding: 16px 20px;
            border-radius: 12px;
            border: 1px solid #eef2f6;
        }

        .detail-container .detail-info .detail-meta .item {
            display: flex;
            justify-content: space-between;
            font-size: 14px;
            padding: 4px 0;
            border-bottom: 1px dashed #edf2f8;
        }

        .detail-container .detail-info .detail-meta .item .label {
            color: #4a637f;
        }

        .detail-container .detail-info .detail-meta .item .value {
            font-weight: 500;
            color: #0a1a2b;
        }

        .detail-container .detail-params {
            margin-top: 24px;
            background: white;
            border-radius: 12px;
            border: 1px solid #eef2f6;
            overflow: hidden;
        }

        .detail-container .detail-params h4 {
            padding: 16px 20px;
            font-size: 16px;
            font-weight: 600;
            color: #0a1a2b;
            background: #f6faff;
            border-bottom: 1px solid #eef2f6;
        }

        .detail-container .detail-params table {
            width: 100%;
            border-collapse: collapse;
            font-size: 14px;
        }

        .detail-container .detail-params table td {
            padding: 12px 20px;
            border-bottom: 1px solid #edf2f8;
        }

        .detail-container .detail-params table td:first-child {
            color: #4a637f;
            width: 160px;
            font-weight: 500;
        }

        .detail-container .detail-params table td:last-child {
            color: #0a1a2b;
        }

        .detail-container .detail-params table tr:last-child td {
            border-bottom: none;
        }

        /* ===== 响应式 ===== */
        @media (max-width: 1024px) {
            .page-wrapper {
                padding: 24px 20px 32px;
            }
            .filter-sidebar {
                flex: 0 0 220px;
                padding: 20px 16px 24px;
            }
            .product-grid {
                grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
                gap: 18px;
            }
        }

        @media (max-width: 820px) {
            .product-layout {
                flex-direction: column;
                gap: 28px;
            }
            .filter-sidebar {
                flex: 1 1 auto;
                width: 100%;
                position: static;
                max-height: none;
                overflow-y: visible;
            }
            .filter-group {
                display: inline-block;
                margin-right: 24px;
                margin-bottom: 16px;
                vertical-align: top;
            }
            .filter-group .filter-label {
                margin-bottom: 6px;
            }
            .filter-group label {
                padding: 3px 0;
            }
            .btn-filter,
            .btn-reset {
                width: auto;
                padding: 8px 28px;
                display: inline-block;
                margin-top: 4px;
                margin-right: 10px;
            }
            .page-header .title-group h1 {
                font-size: 26px;
            }
            .detail-container .detail-top {
                flex-direction: column;
                align-items: center;
            }
            .detail-container .detail-img {
                flex: 0 0 auto;
                width: 100%;
                max-width: 280px;
                height: 180px;
            }
            .detail-container {
                padding: 20px;
            }
        }

        @media (max-width: 480px) {
            body {
                padding: 12px;
            }
            .page-wrapper {
                padding: 16px 12px 24px;
                border-radius: 16px;
            }
            .product-grid {
                grid-template-columns: 1fr 1fr;
                gap: 14px;
            }
            .product-card .card-img {
                height: 100px;
                min-height: 80px;
                padding: 8px;
            }
            .product-card .card-header .product-name {
                font-size: 15px;
            }
            .product-card .card-body .spec-item {
                font-size: 12px;
            }
            .toolbar .sort-group a {
                font-size: 13px;
                padding: 2px 10px;
            }
            .detail-container .detail-params table td {
                padding: 10px 14px;
                font-size: 13px;
            }
            .detail-container .detail-params table td:first-child {
                width: 100px;
            }
        }

        @media (max-width: 380px) {
            .product-grid {
                grid-template-columns: 1fr;
            }
        }