* {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
            font-family: 'Segoe UI', 'Microsoft YaHei', sans-serif;
        }
        
        :root {
            --primary-color: #1e3a8a;
            --secondary-color: #dc2626;
            --accent-color: #fbbf24;
            --light-color: #f8fafc;
            --dark-color: #1e293b;
            --gray-color: #64748b;
            --shadow: 0 4px 12px rgba(0, 0, 0, 0.08);
            --transition: all 0.3s ease;
        }
        
        body {
            line-height: 1.6;
            color: var(--dark-color);
            background-color: #f9f9f9;
        }
        
        .containerUniversal {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }
        
        /* 头部样式 */
        .headerNavigationContainer {
            background-color: white;
            box-shadow: var(--shadow);
            position: sticky;
            top: 0;
            z-index: 1000;
        }
        
        .headerContentWrapper {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 15px 0;
        }
        
        .logoBrandingSection {
            display: flex;
            align-items: center;
            gap: 15px;
        }
        
        .logoBrandingSection img {
            height: 50px;
            width: auto;
        }
        
        .companyNameTitle {
            font-size: 1.8rem;
            font-weight: 700;
            color: var(--primary-color);
            line-height: 1.2;
        }
        
        .companyNameSubtitle {
            font-size: 0.9rem;
            color: var(--gray-color);
            font-weight: 500;
        }
        
        .navigationMenuContainer {
            display: flex;
            gap: 30px;
        }
        
        .navMenuItem {
            text-decoration: none;
            color: var(--dark-color);
            font-weight: 600;
            font-size: 1.05rem;
            position: relative;
            padding: 5px 0;
            transition: var(--transition);
        }
        
        .navMenuItem:hover {
            color: var(--primary-color);
        }
        
        .navMenuItem::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 0;
            height: 3px;
            background-color: var(--primary-color);
            transition: var(--transition);
        }
        
        .navMenuItem:hover::after {
            width: 100%;
        }
        
        .mobileMenuToggleButton {
            display: none;
            font-size: 1.5rem;
            color: var(--primary-color);
            background: none;
            border: none;
            cursor: pointer;
        }
        
        /* 英雄区域样式 */
        .heroBannerSectionWrapper {
            background: linear-gradient(rgba(30, 58, 138, 0.9), rgba(30, 58, 138, 0.8)), url('https://images.unsplash.com/photo-1461896836934-ffe607ba8211?ixlib=rb-4.0.3&ixid=M3wxMjA3fDB8MHxwaG90by1wYWdlfHx8fGVufDB8fHx8fA%3D%3D&auto=format&fit=crop&w=2070&q=80');
            background-size: cover;
            background-position: center;
            color: white;
            padding: 100px 0;
            text-align: center;
        }
        
        .heroTitleMainHeading {
            font-size: 3.2rem;
            margin-bottom: 20px;
            text-shadow: 0 2px 5px rgba(0, 0, 0, 0.3);
        }
        
        .heroDescriptionText {
            font-size: 1.2rem;
            max-width: 800px;
            margin: 0 auto 30px;
            opacity: 0.95;
        }
        
        .ctaButtonPrimary {
            display: inline-block;
            background-color: var(--secondary-color);
            color: white;
            padding: 15px 35px;
            font-size: 1.1rem;
            font-weight: 600;
            border-radius: 8px;
            text-decoration: none;
            transition: var(--transition);
            box-shadow: 0 4px 15px rgba(220, 38, 38, 0.3);
        }
        
        .ctaButtonPrimary:hover {
            background-color: #b91c1c;
            transform: translateY(-3px);
            box-shadow: 0 6px 20px rgba(220, 38, 38, 0.4);
        }
        
        /* 主要内容区域 */
        .sectionContainerPadding {
            padding: 80px 0;
        }
        
        .sectionTitleHeader {
            text-align: center;
            margin-bottom: 60px;
        }
        
        .sectionTitleMain {
            font-size: 2.5rem;
            color: var(--primary-color);
            margin-bottom: 15px;
            position: relative;
            display: inline-block;
        }
        
        .sectionTitleMain::after {
            content: '';
            position: absolute;
            bottom: -10px;
            left: 50%;
            transform: translateX(-50%);
            width: 80px;
            height: 4px;
            background-color: var(--accent-color);
        }
        
        .sectionSubtitleText {
            font-size: 1.1rem;
            color: var(--gray-color);
            max-width: 700px;
            margin: 0 auto;
        }
        
        /* 关于我们 */
        .aboutUsContentContainer {
            display: flex;
            align-items: center;
            gap: 60px;
        }
        
        .aboutUsImageWrapper {
            flex: 1;
            border-radius: 12px;
            overflow: hidden;
            box-shadow: var(--shadow);
        }
        
        .aboutUsImageWrapper img {
            width: 100%;
            height: auto;
            display: block;
            transition: var(--transition);
        }
        
        .aboutUsImageWrapper img:hover {
            transform: scale(1.03);
        }
        
        .aboutUsTextContent {
            flex: 1;
        }
        
        .aboutUsDescription {
            font-size: 1.1rem;
            line-height: 1.8;
            margin-bottom: 25px;
        }
        
        .aboutUsFeaturesList {
            list-style: none;
            margin-bottom: 30px;
        }
        
        .aboutUsFeaturesList li {
            margin-bottom: 12px;
            display: flex;
            align-items: flex-start;
        }
        
        .aboutUsFeaturesList i {
            color: var(--secondary-color);
            margin-right: 10px;
            margin-top: 5px;
            flex-shrink: 0;
        }
        
        /* 产品展示 */
        .productsGridLayoutContainer {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
            gap: 30px;
        }
        
        .productCardItem {
            background-color: white;
            border-radius: 12px;
            overflow: hidden;
            box-shadow: var(--shadow);
            transition: var(--transition);
        }
        
        .productCardItem:hover {
            transform: translateY(-10px);
            box-shadow: 0 12px 25px rgba(0, 0, 0, 0.12);
        }
        
        .productImageContainer {
            height: 220px;
            overflow: hidden;
        }
        
        .productImageContainer img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: var(--transition);
        }
        
        .productCardItem:hover .productImageContainer img {
            transform: scale(1.08);
        }
        
        .productInfoContent {
            padding: 25px;
        }
        
        .productCategoryLabel {
            display: inline-block;
            background-color: var(--primary-color);
            color: white;
            padding: 5px 15px;
            border-radius: 20px;
            font-size: 0.85rem;
            font-weight: 600;
            margin-bottom: 15px;
        }
        
        .productTitleName {
            font-size: 1.4rem;
            margin-bottom: 10px;
            color: var(--dark-color);
        }
        
        .productDescriptionText {
            color: var(--gray-color);
            margin-bottom: 20px;
        }
        
        /* 解决方案 */
        .solutionsTabContainer {
            max-width: 900px;
            margin: 0 auto;
        }
        
        .solutionsTabButtons {
            display: flex;
            justify-content: center;
            flex-wrap: wrap;
            gap: 10px;
            margin-bottom: 40px;
        }
        
        .solutionTabButton {
            background-color: white;
            border: 2px solid #e2e8f0;
            padding: 12px 30px;
            font-size: 1.05rem;
            font-weight: 600;
            color: var(--dark-color);
            border-radius: 8px;
            cursor: pointer;
            transition: var(--transition);
        }
        
        .solutionTabButton:hover {
            border-color: var(--primary-color);
            color: var(--primary-color);
        }
        
        .solutionTabButton.active {
            background-color: var(--primary-color);
            color: white;
            border-color: var(--primary-color);
        }
        
        .solutionContentPanel {
            background-color: white;
            border-radius: 12px;
            padding: 40px;
            box-shadow: var(--shadow);
            display: none;
        }
        
        .solutionContentPanel.active {
            display: block;
        }
        
        .solutionPanelTitle {
            font-size: 1.8rem;
            color: var(--primary-color);
            margin-bottom: 20px;
        }
        
        /* 联系我们 */
        .contactInfoGridLayout {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 30px;
            margin-bottom: 50px;
        }
        
        .contactInfoCard {
            background-color: white;
            border-radius: 12px;
            padding: 30px;
            box-shadow: var(--shadow);
            text-align: center;
        }
        
        .contactIconWrapper {
            width: 70px;
            height: 70px;
            background-color: rgba(30, 58, 138, 0.1);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 20px;
        }
        
        .contactIconWrapper i {
            font-size: 1.8rem;
            color: var(--primary-color);
        }
        
        .contactFormContainer {
            max-width: 800px;
            margin: 0 auto;
            background-color: white;
            border-radius: 12px;
            padding: 40px;
            box-shadow: var(--shadow);
        }
        
        .formGroupContainer {
            margin-bottom: 25px;
        }
        
        .formGroupContainer label {
            display: block;
            margin-bottom: 8px;
            font-weight: 600;
        }
        
        .formInputField {
            width: 100%;
            padding: 15px;
            border: 2px solid #e2e8f0;
            border-radius: 8px;
            font-size: 1rem;
            transition: var(--transition);
        }
        
        .formInputField:focus {
            border-color: var(--primary-color);
            outline: none;
        }
        
        .formTextareaField {
            min-height: 150px;
            resize: vertical;
        }
        
        /* 底部样式 */
        .footerMainContainer {
            background-color: var(--dark-color);
            color: white;
            padding: 60px 0 0;
        }
        
        .footerContentWrapper {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 40px;
            margin-bottom: 40px;
        }
        
        .footerLogoColumn img {
            height: 50px;
            margin-bottom: 20px;
        }
        
        .footerLinksColumn h3 {
            font-size: 1.3rem;
            margin-bottom: 25px;
            color: white;
            position: relative;
            padding-bottom: 10px;
        }
        
        .footerLinksColumn h3::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 40px;
            height: 3px;
            background-color: var(--accent-color);
        }
        
        .footerLinksList {
            list-style: none;
        }
        
        .footerLinksList li {
            margin-bottom: 12px;
        }
        
        .footerLinksList a {
            color: #cbd5e1;
            text-decoration: none;
            transition: var(--transition);
        }
        
        .footerLinksList a:hover {
            color: var(--accent-color);
            padding-left: 5px;
        }
        
        .copyrightDisclaimerSection {
            background-color: #0f172a;
            padding: 25px 0;
            text-align: center;
            color: #94a3b8;
            font-size: 0.95rem;
        }
        
        .footerLegalLinks {
            display: flex;
            justify-content: center;
            gap: 30px;
            margin-top: 15px;
        }
        
        .footerLegalLinks a {
            color: #cbd5e1;
            text-decoration: none;
            transition: var(--transition);
        }
        
        .footerLegalLinks a:hover {
            color: var(--accent-color);
            text-decoration: underline;
        }
        
        /* 模态框样式 */
        .modalOverlayContainer {
            display: none;
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background-color: rgba(0, 0, 0, 0.7);
            z-index: 2000;
            align-items: center;
            justify-content: center;
            padding: 20px;
        }
        
        .modalContentBox {
            background-color: white;
            border-radius: 12px;
            max-width: 800px;
            width: 100%;
            max-height: 80vh;
            overflow-y: auto;
            padding: 40px;
            position: relative;
        }
        
        .modalCloseButton {
            position: absolute;
            top: 20px;
            right: 20px;
            background: none;
            border: none;
            font-size: 1.5rem;
            color: var(--gray-color);
            cursor: pointer;
            transition: var(--transition);
        }
        
        .modalCloseButton:hover {
            color: var(--secondary-color);
        }
        
        .modalTitleHeader {
            font-size: 2rem;
            color: var(--primary-color);
            margin-bottom: 25px;
        }
        
        /* 响应式设计 */
        @media (max-width: 992px) {
            .aboutUsContentContainer {
                flex-direction: column;
            }
            
            .heroTitleMainHeading {
                font-size: 2.7rem;
            }
        }
        
        @media (max-width: 768px) {
            .navigationMenuContainer {
                display: none;
                position: absolute;
                top: 100%;
                left: 0;
                width: 100%;
                background-color: white;
                flex-direction: column;
                padding: 20px;
                box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
            }
            
            .navigationMenuContainer.active {
                display: flex;
            }
            
            .mobileMenuToggleButton {
                display: block;
            }
            
            .heroTitleMainHeading {
                font-size: 2.2rem;
            }
            
            .sectionTitleMain {
                font-size: 2rem;
            }
            
            .solutionTabButton {
                padding: 10px 20px;
                font-size: 1rem;
            }
        }
        
        @media (max-width: 576px) {
            .heroBannerSectionWrapper {
                padding: 70px 0;
            }
            
            .sectionContainerPadding {
                padding: 60px 0;
            }
            
            .contactFormContainer {
                padding: 25px;
            }
            
            .modalContentBox {
                padding: 25px;
            }
        }