*,
        *::before,
        *::after {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }

        :root {
            --color-primary: #FF6B35;
            --color-primary-dark: #E8551E;
            --color-primary-light: #FF8A5C;
            --color-primary-bg: rgba(255, 107, 53, 0.08);
            --color-secondary: #1E293B;
            --color-gray-50: #F8FAFC;
            --color-gray-100: #F1F5F9;
            --color-gray-200: #E2E8F0;
            --color-gray-300: #CBD5E1;
            --color-gray-400: #94A3B8;
            --color-gray-500: #64748B;
            --color-gray-600: #475569;
            --color-gray-700: #334155;
            --color-gray-800: #1E293B;
            --color-gray-900: #0F172A;
            --font-heading: 'Inter', 'Noto Sans SC', sans-serif;
            --font-body: 'Inter', 'Noto Sans SC', sans-serif;
            --container-max-width: 1280px;
            --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
            --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
            --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
            --radius-sm: 6px;
            --radius-md: 10px;
            --radius-lg: 16px;
            --radius-xl: 24px;
        }

        html {
            scroll-behavior: smooth;
        }
        body {
            font-family: var(--font-body);
            font-weight: 400;
            color: var(--color-gray-800);
            background: #FFFFFF;
            line-height: 1.6;
            -webkit-font-smoothing: antialiased;
            overflow-x: hidden;
        }
        h1,
        h2,
        h3,
        h4 {
            font-family: var(--font-heading);
            font-weight: 600;
            line-height: 1.2;
            color: var(--color-gray-900);
        }
        h1 {
            font-size: clamp(28px, 3.5vw, 36px);
            font-weight: 700;
        }
        a {
            text-decoration: none;
            color: inherit;
            transition: color 0.2s ease;
        }
        ul {
            list-style: none;
        }
        .container {
            max-width: var(--container-max-width);
            margin: 0 auto;
            padding: 0 24px;
        }
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            padding: 10px 24px;
            font-weight: 600;
            font-size: 15px;
            border-radius: var(--radius-md);
            transition: all 0.2s ease;
            cursor: pointer;
            border: none;
            white-space: nowrap;
            font-family: var(--font-body);
        }
        .btn i {
            width: 18px;
            height: 18px;
        }
        .btn-primary {
            background: var(--color-primary);
            color: #fff;
            box-shadow: var(--shadow-sm);
        }
        .btn-primary:hover {
            background: var(--color-primary-dark);
            box-shadow: var(--shadow-md);
            transform: translateY(-1px);
        }
        .btn-outline {
            background: transparent;
            color: var(--color-gray-800);
            border: 1.5px solid var(--color-gray-300);
        }
        .btn-outline:hover {
            border-color: var(--color-primary);
            color: var(--color-primary);
            background: var(--color-primary-bg);
        }
        .btn-sm {
            padding: 8px 12px;
            font-size: 13px;
        }

        /* 导航 */
        .header {
            position: sticky;
            top: 0;
            z-index: 100;
            background: rgba(255, 255, 255, 0.95);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border-bottom: 1px solid var(--color-gray-200);
        }
        .header-container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 76px;
            padding: 0 28px;
            max-width: var(--container-max-width);
            margin: 0 auto;
            gap: 20px;
        }
        .logo {
            display: flex;
            align-items: center;
            gap: 12px;
            flex-shrink: 0;
        }
        .logo-icon {
            width: 46px;
            height: 46px;
            background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-dark) 100%);
            border-radius: var(--radius-md);
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-weight: 700;
            font-size: 22px;
            box-shadow: 0 2px 8px rgba(255, 107, 53, 0.3);
        }
        .logo-text {
            font-size: 22px;
            font-weight: 700;
            color: var(--color-gray-900);
        }
        .logo-text span {
            color: var(--color-primary);
            font-weight: 600;
        }
        .nav-menu {
            display: flex;
            align-items: center;
            gap: 32px;
        }
        .nav-link {
            font-weight: 500;
            font-size: 15px;
            color: var(--color-gray-700);
            position: relative;
            white-space: nowrap;
            transition: color 0.2s;
        }
        .nav-link:hover {
            color: var(--color-primary);
        }
        .nav-link.active {
            color: var(--color-primary);
            font-weight: 600;
        }
        .nav-link.active::after {
            content: '';
            position: absolute;
            bottom: -2px;
            left: 0;
            right: 0;
            height: 2.5px;
            background: var(--color-primary);
            border-radius: 2px;
        }
        .header-actions {
            display: flex;
            align-items: center;
            gap: 8px;
            flex-shrink: 0;
        }
        .icon-btn {
            background: none;
            border: none;
            cursor: pointer;
            color: var(--color-gray-600);
            padding: 10px;
            border-radius: var(--radius-sm);
            transition: all 0.2s;
            display: flex;
            align-items: center;
            justify-content: center;
        }
        .icon-btn:hover {
            background: var(--color-gray-100);
            color: var(--color-primary);
        }
        .icon-btn i {
            width: 20px;
            height: 20px;
        }
        .lang-switch {
            font-size: 13px;
            font-weight: 500;
            gap: 4px;
            padding: 8px 12px;
        }

        @media (max-width: 1024px) {
            .nav-menu {
                display: none;
            }
        }
        @media (max-width: 480px) {
            .header-container {
                height: 64px;
                padding: 0 16px;
            }
            .logo-icon {
                width: 38px;
                height: 38px;
                font-size: 18px;
            }
            .logo-text {
                font-size: 18px;
            }
            .lang-switch span {
                display: none;
            }
        }

        /* 面包屑 */
        .breadcrumb {
            padding: 16px 0;
            background: var(--color-gray-50);
            border-bottom: 1px solid var(--color-gray-200);
        }
        .breadcrumb ol {
            display: flex;
            align-items: center;
            flex-wrap: wrap;
            gap: 8px;
            font-size: 14px;
            color: var(--color-gray-500);
        }
        .breadcrumb li {
            display: flex;
            align-items: center;
        }
        .breadcrumb li:not(:last-child)::after {
            content: '/';
            margin-left: 8px;
            color: var(--color-gray-400);
        }
        .breadcrumb a {
            color: var(--color-gray-600);
        }
        .breadcrumb a:hover {
            color: var(--color-primary);
        }

        /* 页面头部 */
        .page-header {
            padding: 32px 0 16px;
        }
        .page-header h1 {
            margin-bottom: 8px;
            transition: all 0.3s ease;
        }
        .page-header h1 .filter-indicator {
            color: var(--color-primary);
            font-weight: 600;
        }
        .page-header p {
            font-size: 15px;
            color: var(--color-gray-500);
            max-width: 700px;
        }

        /* 激活筛选标签 */
        .active-filters {
            display: flex;
            flex-wrap: wrap;
            gap: 6px;
            margin-top: 10px;
            min-height: 0;
        }
        .active-filter-tag {
            display: inline-flex;
            align-items: center;
            gap: 4px;
            padding: 5px 12px;
            font-size: 12px;
            font-weight: 500;
            border-radius: 100px;
            background: var(--color-primary-bg);
            color: var(--color-primary);
            cursor: pointer;
            transition: all 0.15s;
        }
        .active-filter-tag:hover {
            background: var(--color-primary);
            color: #fff;
        }
        .active-filter-tag i {
            width: 14px;
            height: 14px;
        }

        /* 分类标签 */
        .category-tabs {
            margin-bottom: 24px;
            border-bottom: 1px solid var(--color-gray-200);
            overflow-x: auto;
            -webkit-overflow-scrolling: touch;
        }
        .tabs-container {
            display: flex;
            gap: 4px;
            flex-wrap: nowrap;
            min-width: max-content;
            padding-bottom: 2px;
        }
        .tab-item {
            padding: 10px 20px;
            font-weight: 500;
            font-size: 14px;
            color: var(--color-gray-600);
            border-bottom: 3px solid transparent;
            cursor: pointer;
            transition: all 0.2s ease;
            white-space: nowrap;
            background: none;
            border-top: none;
            border-left: none;
            border-right: none;
            font-family: var(--font-body);
        }
        .tab-item.active {
            color: var(--color-primary);
            border-bottom-color: var(--color-primary);
            font-weight: 600;
        }
        .tab-item:hover {
            color: var(--color-primary);
        }

        /* 主布局 */
        .main-content {
            display: grid;
            grid-template-columns: 280px 1fr;
            gap: 36px;
            padding: 16px 0 60px;
        }

        /* 侧边栏 */
        .sidebar {
            background: var(--color-gray-50);
            padding: 24px;
            border-radius: var(--radius-lg);
            border: 1px solid var(--color-gray-200);
            height: fit-content;
            position: sticky;
            top: 92px;
            max-height: calc(100vh - 120px);
            overflow-y: auto;
        }
        .filter-group {
            margin-bottom: 24px;
        }
        .filter-group h3 {
            font-size: 15px;
            margin-bottom: 12px;
            display: flex;
            align-items: center;
            gap: 8px;
            color: var(--color-gray-800);
        }
        .filter-group h3 i {
            color: var(--color-primary);
            width: 18px;
            height: 18px;
            flex-shrink: 0;
        }
        .filter-group ul li {
            margin-bottom: 10px;
        }
        .filter-group label {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 13px;
            color: var(--color-gray-700);
            cursor: pointer;
            transition: color 0.15s;
        }
        .filter-group label:hover {
            color: var(--color-primary);
        }
        .filter-group input[type="checkbox"] {
            width: 17px;
            height: 17px;
            accent-color: var(--color-primary);
            flex-shrink: 0;
        }
        .filter-search {
            margin-bottom: 20px;
        }
        .filter-search input {
            width: 100%;
            padding: 10px 14px;
            border: 1px solid var(--color-gray-300);
            border-radius: var(--radius-sm);
            font-size: 14px;
            background: #fff;
            font-family: var(--font-body);
        }
        .filter-search input:focus {
            outline: none;
            border-color: var(--color-primary);
        }
        .filter-actions {
            display: flex;
            gap: 10px;
            margin-top: 16px;
        }
        .filter-actions .btn {
            flex: 1;
            justify-content: center;
            padding: 10px 16px;
            font-size: 14px;
        }

        /* 产品区域 */
        .products-header {
            display: flex;
            justify-content: space-between;
            align-items: center;
            margin-bottom: 20px;
            flex-wrap: wrap;
            gap: 12px;
        }
        .result-count {
            font-size: 14px;
            color: var(--color-gray-500);
        }
        .sort-select {
            padding: 8px 14px;
            border: 1px solid var(--color-gray-300);
            border-radius: var(--radius-sm);
            font-size: 14px;
            background: #fff;
            font-family: var(--font-body);
        }
        .product-grid {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
            gap: 20px;
            margin-bottom: 32px;
        }
        .product-card {
            background: #fff;
            border-radius: var(--radius-lg);
            border: 1px solid var(--color-gray-200);
            padding: 18px;
            transition: all 0.2s ease;
            display: flex;
            flex-direction: column;
            position: relative;
        }
        .product-card:hover {
            box-shadow: var(--shadow-lg);
            border-color: var(--color-primary-light);
            transform: translateY(-2px);
        }
        .product-badge {
            align-self: flex-start;
            margin-bottom: 8px;
            display: flex;
            flex-wrap: wrap;
            gap: 5px;
        }
        .badge {
            display: inline-block;
            padding: 3px 10px;
            font-size: 11px;
            font-weight: 500;
            border-radius: 100px;
            background: rgba(255, 107, 53, 0.1);
            color: var(--color-primary);
        }
        .badge.highlight {
            background: var(--color-primary);
            color: #fff;
            font-weight: 600;
        }
        .badge-brand {
            background: var(--color-gray-900);
            color: #fff;
            padding: 3px 10px;
            border-radius: 100px;
            font-size: 11px;
            font-weight: 600;
            display: inline-block;
        }
        .badge-brand.highlight {
            background: var(--color-primary);
            color: #fff;
            box-shadow: 0 2px 8px rgba(255, 107, 53, 0.3);
        }
        .product-image {
            width: 100%;
            aspect-ratio: 1/1;
            background: var(--color-gray-100);
            border-radius: var(--radius-md);
            margin-bottom: 14px;
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--color-gray-400);
            position: relative;
            overflow: hidden;
        }
        .product-title {
            font-size: 16px;
            font-weight: 600;
            margin-bottom: 6px;
            line-height: 1.35;
            color: var(--color-gray-900);
        }
        .product-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 5px;
            margin-bottom: 8px;
        }
        .tag {
            background: var(--color-gray-100);
            padding: 2px 8px;
            border-radius: 100px;
            font-size: 11px;
            color: var(--color-gray-600);
            white-space: nowrap;
        }
        .tag.match {
            background: var(--color-primary-bg);
            color: var(--color-primary);
            font-weight: 500;
        }
        .product-cas {
            font-size: 12px;
            color: var(--color-gray-500);
            margin-bottom: 8px;
            font-family: monospace;
        }
        .product-desc {
            font-size: 13px;
            color: var(--color-gray-600);
            margin-bottom: 14px;
            line-height: 1.5;
            flex: 1;
        }
        .product-actions {
            display: flex;
            gap: 8px;
        }

        /* 分页 */
        .pagination {
            display: flex;
            justify-content: center;
            gap: 8px;
            margin-top: 32px;
        }
        .page-item {
            display: flex;
            align-items: center;
            justify-content: center;
            width: 38px;
            height: 38px;
            border-radius: var(--radius-sm);
            background: #fff;
            border: 1px solid var(--color-gray-200);
            color: var(--color-gray-700);
            cursor: pointer;
            transition: all 0.2s;
            font-size: 14px;
        }
        .page-item.active {
            background: var(--color-primary);
            border-color: var(--color-primary);
            color: #fff;
        }
        .page-item:hover:not(.active) {
            border-color: var(--color-primary);
            color: var(--color-primary);
        }

        /* 移动端筛选按钮 */
        .mobile-filter-btn {
            display: none;
            position: fixed;
            bottom: 24px;
            left: 50%;
            transform: translateX(-50%);
            z-index: 90;
            background: var(--color-primary);
            color: #fff;
            padding: 14px 28px;
            border-radius: 100px;
            font-weight: 600;
            font-size: 15px;
            box-shadow: 0 8px 24px rgba(255, 107, 53, 0.4);
            cursor: pointer;
            border: none;
            gap: 8px;
            align-items: center;
            font-family: var(--font-body);
            transition: all 0.2s;
        }
        .mobile-filter-btn:hover {
            background: var(--color-primary-dark);
            box-shadow: 0 12px 28px rgba(255, 107, 53, 0.5);
            transform: translateX(-50%) translateY(-2px);
        }
        .mobile-filter-btn .badge-count {
            background: #fff;
            color: var(--color-primary);
            border-radius: 50%;
            width: 22px;
            height: 22px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 12px;
            font-weight: 700;
        }

        /* 移动端筛选面板 */
        .mobile-filter-overlay {
            display: none;
            position: fixed;
            inset: 0;
            z-index: 200;
            background: rgba(15, 23, 42, 0.5);
            backdrop-filter: blur(2px);
            -webkit-backdrop-filter: blur(2px);
            opacity: 0;
            pointer-events: none;
            transition: opacity 0.3s ease;
        }
        .mobile-filter-overlay.open {
            opacity: 1;
            pointer-events: auto;
        }
        .mobile-filter-panel {
            display: none;
            position: fixed;
            bottom: 0;
            left: 0;
            right: 0;
            z-index: 201;
            background: #fff;
            border-radius: var(--radius-xl) var(--radius-xl) 0 0;
            max-height: 75vh;
            overflow-y: auto;
            padding: 20px 24px 32px;
            box-shadow: 0 -8px 32px rgba(0, 0, 0, 0.15);
            transform: translateY(100%);
            transition: transform 0.35s cubic-bezier(0.4, 0, 0.2, 1);
        }
        .mobile-filter-panel.open {
            transform: translateY(0);
        }
        .mobile-filter-panel .panel-header {
            display: flex;
            align-items: center;
            justify-content: space-between;
            margin-bottom: 16px;
            padding-bottom: 12px;
            border-bottom: 1px solid var(--color-gray-200);
            position: sticky;
            top: 0;
            background: #fff;
            z-index: 1;
        }
        .mobile-filter-panel .panel-header h3 {
            font-size: 18px;
            font-weight: 700;
        }
        .mobile-filter-panel .filter-group h3 {
            font-size: 14px;
        }
        .mobile-filter-panel .filter-group label {
            font-size: 13px;
        }

        @media (max-width: 1024px) {
            .main-content {
                grid-template-columns: 1fr;
            }
            .sidebar {
                display: none;
            }
            .mobile-filter-btn {
                display: flex;
            }
            .mobile-filter-overlay {
                display: block;
            }
            .mobile-filter-panel {
                display: block;
            }
            .product-grid {
                grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
                gap: 16px;
            }
            .product-card {
                padding: 14px;
            }
        }
        @media (max-width: 640px) {
            .product-grid {
                grid-template-columns: repeat(auto-fill, minmax(160px, 1fr));
                gap: 12px;
            }
            .product-title {
                font-size: 14px;
            }
            .product-desc {
                font-size: 12px;
            }
            .container {
                padding: 0 14px;
            }
        }

        /* 底部 */
        .footer {
            background: var(--color-gray-900);
            color: #fff;
            padding: 56px 0 28px;
            margin-top: 20px;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr 1.5fr;
            gap: 36px;
            margin-bottom: 44px;
        }
        .footer-brand p {
            color: var(--color-gray-400);
            margin: 18px 0;
            font-size: 14px;
            line-height: 1.7;
        }
        .footer-links h4 {
            color: #fff;
            font-size: 15px;
            margin-bottom: 18px;
            font-weight: 600;
        }
        .footer-links ul li {
            margin-bottom: 10px;
        }
        .footer-links ul li a {
            color: var(--color-gray-400);
            font-size: 13px;
            transition: color 0.2s;
        }
        .footer-links ul li a:hover {
            color: #fff;
        }
        .footer-contact h4 {
            color: #fff;
            font-size: 15px;
            margin-bottom: 18px;
            font-weight: 600;
        }
        .footer-contact p {
            display: flex;
            align-items: center;
            gap: 10px;
            color: var(--color-gray-400);
            font-size: 13px;
            margin-bottom: 10px;
        }
        .footer-bottom {
            text-align: center;
            padding-top: 24px;
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            color: var(--color-gray-500);
            font-size: 12px;
        }

        @media (max-width: 1024px) {
            .footer-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 28px;
            }
        }
        @media (max-width: 640px) {
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }
        }