/* ====== 关于我们页面独享CSS ====== */
        
        /* 关于我们英雄区域 */
        .about-hero {
            padding-top: 12rem;
            padding-bottom: 6rem;
            background: linear-gradient(135deg, var(--primary) 0%, var(--dark) 100%);
            color: white;
            position: relative;
            overflow: hidden;
        }
        
        .about-hero::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" width="100" height="100" viewBox="0 0 100 100"><rect width="100" height="100" fill="none"/><path d="M0,50 Q25,30 50,50 T100,50" stroke="rgba(255,255,255,0.05)" stroke-width="1" fill="none"/></svg>');
            opacity: 0.3;
        }
        
        .about-hero-content {
            max-width: 1200px;
            margin: 0 auto;
            text-align: center;
            position: relative;
            z-index: 2;
        }
        
        .about-hero h1 {
            color: white;
            margin-bottom: 1.5rem;
        }
        
        .brand-slogan {
            font-size: 1.8rem;
            font-weight: 700;
            color: var(--accent);
            margin-bottom: 2rem;
            display: block;
            font-style: italic;
        }
        
        .about-hero p {
            color: rgba(255, 255, 255, 0.8);
            font-size: 1.2rem;
            max-width: 800px;
            margin: 0 auto 2.5rem;
        }
        
        .hero-stats {
            display: flex;
            justify-content: center;
            gap: 4rem;
            margin-top: 3rem;
            flex-wrap: wrap;
        }
        
        .hero-stat-item {
            text-align: center;
        }
        
        .hero-stat-number {
            display: block;
            font-size: 3rem;
            font-weight: 800;
            color: var(--secondary);
            line-height: 1;
            margin-bottom: 0.5rem;
        }
        
        .hero-stat-text {
            font-size: 1rem;
            font-weight: 600;
            text-transform: uppercase;
            letter-spacing: 1px;
            color: rgba(255, 255, 255, 0.8);
        }
        
        /* 概述板块 */
        .overview-section {
            background-color: white;
        }
        
        .overview-content {
            max-width: 1000px;
            margin: 0 auto;
        }
        
        .overview-text p {
            font-size: 1.15rem;
            line-height: 1.8;
            margin-bottom: 2rem;
        }
        
        /* 发展历程 */
        .timeline-section {
            background-color: var(--light);
            position: relative;
            overflow: hidden;
        }
        
        .timeline-container {
            max-width: 1200px;
            margin: 0 auto;
            position: relative;
        }
        
        .timeline {
            position: relative;
            padding: 2rem 0;
        }
        
        .timeline::before {
            content: '';
            position: absolute;
            left: 50%;
            top: 0;
            bottom: 0;
            width: 4px;
            background: linear-gradient(to bottom, var(--accent), var(--secondary));
            transform: translateX(-50%);
            z-index: 1;
        }
        
        .timeline-item {
            display: flex;
            margin-bottom: 4rem;
            position: relative;
            opacity: 0;
            transform: translateY(30px);
            transition: var(--transition);
        }
        
        .timeline-item.visible {
            opacity: 1;
            transform: translateY(0);
        }
        
        .timeline-item:nth-child(odd) {
            flex-direction: row;
        }
        
        .timeline-item:nth-child(even) {
            flex-direction: row-reverse;
        }
        
        .timeline-content {
            width: 45%;
            padding: 2.5rem;
            background: white;
            border-radius: var(--border-radius);
            box-shadow: var(--shadow-sm);
            position: relative;
            transition: var(--transition);
        }
        
        .timeline-item:hover .timeline-content {
            transform: translateY(-10px);
            box-shadow: var(--shadow-lg);
        }
        
        .timeline-content::before {
            content: '';
            position: absolute;
            width: 30px;
            height: 30px;
            background-color: white;
            transform: rotate(45deg);
        }
        
        .timeline-item:nth-child(odd) .timeline-content::before {
            right: -15px;
            top: 50%;
            transform: translateY(-50%) rotate(45deg);
        }
        
        .timeline-item:nth-child(even) .timeline-content::before {
            left: -15px;
            top: 50%;
            transform: translateY(-50%) rotate(45deg);
        }
        
        .timeline-year {
            position: absolute;
            top: 50%;
            transform: translateY(-50%);
            width: 100px;
            height: 100px;
            background-color: var(--secondary);
            color: white;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.5rem;
            font-weight: 800;
            z-index: 2;
            box-shadow: 0 10px 25px rgba(255, 107, 107, 0.3);
        }
        
        .timeline-item:nth-child(odd) .timeline-year {
            left: calc(50% - 50px);
        }
        
        .timeline-item:nth-child(even) .timeline-year {
            left: calc(50% - 50px);
        }
        
        .timeline-content h3 {
            color: var(--primary);
            margin-bottom: 1rem;
        }
        
        .timeline-content p {
            color: var(--gray);
        }
        
        /* 核心业务体系 */
        .business-section {
            background-color: white;
        }
        
        .business-tabs {
            display: flex;
            justify-content: center;
            flex-wrap: wrap;
            gap: 1rem;
            margin-bottom: 4rem;
        }
        
        .business-tab {
            padding: 1rem 2.5rem;
            background-color: transparent;
            border: 2px solid var(--primary);
            border-radius: 50px;
            font-weight: 700;
            cursor: pointer;
            transition: var(--transition);
            text-align: center;
            min-width: 200px;
        }
        
        .business-tab.active,
        .business-tab:hover {
            background-color: var(--primary);
            color: white;
            transform: translateY(-5px);
            box-shadow: var(--shadow-sm);
        }
        
        .business-content {
            display: none;
            animation: fadeIn 0.5s ease;
        }
        
        .business-content.active {
            display: block;
        }
        
        @keyframes fadeIn {
            from { opacity: 0; transform: translateY(20px); }
            to { opacity: 1; transform: translateY(0); }
        }
        
        .business-grid {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(350px, 1fr));
            gap: 2.5rem;
        }
        
        .business-card {
            background: white;
            border-radius: var(--border-radius);
            padding: 2.5rem;
            box-shadow: var(--shadow-sm);
            transition: var(--transition);
            border: 1px solid rgba(141, 153, 174, 0.1);
            position: relative;
            overflow: hidden;
        }
        
        .business-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            width: 6px;
            height: 0;
            background-color: var(--accent);
            transition: var(--transition);
        }
        
        .business-card:hover::before {
            height: 100%;
        }
        
        .business-card:hover {
            transform: translateY(-10px);
            box-shadow: var(--shadow-lg);
        }
        
        .business-icon {
            width: 70px;
            height: 70px;
            background-color: rgba(78, 205, 196, 0.1);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.8rem;
            color: var(--accent);
            margin-bottom: 1.5rem;
            transition: var(--transition);
        }
        
        .business-card:hover .business-icon {
            background-color: var(--secondary);
            color: white;
            transform: rotate(15deg) scale(1.1);
        }
        
        .business-card h3 {
            margin-bottom: 1rem;
            color: var(--primary);
        }
        
        /* 专业化子公司矩阵 */
        .subsidiaries-section {
            background-color: var(--light);
        }
        
        .subsidiaries-container {
            max-width: 1200px;
            margin: 0 auto;
        }
        
        .subsidiaries-intro {
            text-align: center;
            max-width: 800px;
            margin: 0 auto 4rem;
        }
        
        .subsidiaries-grid {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(350px, 1fr));
            gap: 2.5rem;
        }
        
        .subsidiary-card {
            background: white;
            border-radius: var(--border-radius);
            padding: 2.5rem;
            box-shadow: var(--shadow-sm);
            transition: var(--transition);
            border: 1px solid rgba(141, 153, 174, 0.1);
            text-align: center;
        }
        
        .subsidiary-card:hover {
            transform: translateY(-10px);
            box-shadow: var(--shadow-lg);
            border-color: var(--accent);
        }
        
        .subsidiary-icon {
            width: 80px;
            height: 80px;
            background-color: rgba(255, 107, 107, 0.1);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 2rem;
            color: var(--secondary);
            margin: 0 auto 1.5rem;
            transition: var(--transition);
        }
        
        .subsidiary-card:hover .subsidiary-icon {
            background-color: var(--secondary);
            color: white;
            transform: scale(1.1);
        }
        
        .subsidiary-card h3 {
            margin-bottom: 1rem;
            color: var(--primary);
        }
        
        .subsidiary-desc {
            color: var(--gray);
            margin-bottom: 1.5rem;
        }
        
        /* 技术驱动与质量风控 */
        .technology-section {
            background-color: white;
        }
        
        .tech-container {
            max-width: 1200px;
            margin: 0 auto;
        }
        
        .tech-content {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 5rem;
            align-items: center;
        }
        
        .tech-visual {
            position: relative;
            height: 400px;
        }
        
        .tech-element {
            position: absolute;
            border-radius: var(--border-radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-lg);
        }
        
        .tech-1 {
            width: 70%;
            height: 70%;
            top: 0;
            right: 0;
            background: linear-gradient(45deg, var(--primary), var(--dark));
            z-index: 3;
        }
        
        .tech-2 {
            width: 60%;
            height: 60%;
            bottom: 0;
            left: 0;
            background: linear-gradient(45deg, var(--accent), var(--secondary));
            z-index: 2;
        }
        
        .tech-3 {
            width: 50%;
            height: 50%;
            top: 50%;
            left: 50%;
            transform: translate(-50%, -50%);
            background-color: white;
            z-index: 4;
            display: flex;
            align-items: center;
            justify-content: center;
            flex-direction: column;
            padding: 2rem;
            text-align: center;
        }
        
        .tech-3 .hero-stat-number {
            font-size: 2.5rem;
            margin-bottom: 0.5rem;
        }
        
        .tech-features {
            margin-top: 2rem;
        }
        
        .tech-feature {
            display: flex;
            align-items: flex-start;
            margin-bottom: 1.5rem;
        }
        
        .tech-feature-icon {
            width: 50px;
            height: 50px;
            background-color: rgba(78, 205, 196, 0.1);
            border-radius: 12px;
            display: flex;
            align-items: center;
            justify-content: center;
            margin-right: 1.5rem;
            color: var(--accent);
            font-size: 1.2rem;
            flex-shrink: 0;
        }
        
        .tech-feature-content h4 {
            font-size: 1.2rem;
            margin-bottom: 0.5rem;
            color: var(--primary);
        }
        
        /* 战略合作伙伴 */
        .partners-section {
            background-color: var(--light);
        }
        
        .partners-container {
            max-width: 1200px;
            margin: 0 auto;
        }
        
        .partners-grid {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
            gap: 2.5rem;
            margin-top: 3rem;
        }
        
        .partner-card {
            background: white;
            border-radius: var(--border-radius);
            padding: 2.5rem;
            text-align: center;
            box-shadow: var(--shadow-sm);
            transition: var(--transition);
            display: flex;
            flex-direction: column;
            align-items: center;
            justify-content: center;
        }
        
        .partner-card:hover {
            transform: translateY(-10px);
            box-shadow: var(--shadow-lg);
        }
        
        .partner-icon {
            font-size: 2.5rem;
            color: var(--accent);
            margin-bottom: 1.5rem;
            height: 80px;
            display: flex;
            align-items: center;
            justify-content: center;
        }
        
        .partner-card h3 {
            margin-bottom: 1rem;
            color: var(--primary);
        }
        
        /* 社会贡献与品牌荣誉 */
        .honors-section {
            background-color: white;
        }
        
        .honors-container {
            max-width: 1000px;
            margin: 0 auto;
        }
        
        .honors-content {
            text-align: center;
            margin-bottom: 4rem;
        }
        
        .honors-stats {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 2.5rem;
            margin-top: 3rem;
        }
        
        .honor-stat {
            text-align: center;
            padding: 2.5rem;
            background: white;
            border-radius: var(--border-radius);
            box-shadow: var(--shadow-sm);
            transition: var(--transition);
        }
        
        .honor-stat:hover {
            transform: translateY(-10px);
            box-shadow: var(--shadow-lg);
        }
        
        .honor-stat-number {
            display: block;
            font-size: 2.5rem;
            font-weight: 800;
            color: var(--secondary);
            line-height: 1;
            margin-bottom: 1rem;
        }
        
        .honor-stat-text {
            font-size: 1.1rem;
            font-weight: 600;
            color: var(--primary);
        }
        
        /* 愿景与展望 */
        .vision-section {
            background: linear-gradient(135deg, var(--primary) 0%, var(--dark) 100%);
            color: white;
            text-align: center;
            position: relative;
            overflow: hidden;
        }
        
        .vision-section::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" width="100" height="100" viewBox="0 0 100 100"><rect width="100" height="100" fill="none"/><path d="M0,50 Q25,30 50,50 T100,50" stroke="rgba(255,255,255,0.05)" stroke-width="1" fill="none"/></svg>');
            opacity: 0.3;
        }
        
        .vision-section h2 {
            color: white;
        }
        
        .vision-section p {
            color: rgba(255, 255, 255, 0.8);
            max-width: 800px;
            margin: 0 auto 2rem;
        }
        
        /* 响应式设计 */
        @media (max-width: 1200px) {
            .business-grid, .subsidiaries-grid {
                grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
            }
        }
        
        @media (max-width: 992px) {
            .about-hero {
                padding-top: 10rem;
                padding-bottom: 4rem;
            }
            
            .timeline::before {
                left: 30px;
            }
            
            .timeline-item {
                flex-direction: row !important;
                margin-left: 60px;
            }
            
            .timeline-year {
                left: 0 !important;
                transform: translateX(-50%) translateY(-50%);
            }
            
            .timeline-content {
                width: 100%;
            }
            
            .timeline-item:nth-child(odd) .timeline-content::before,
            .timeline-item:nth-child(even) .timeline-content::before {
                left: -15px;
                right: auto;
            }
            
            .tech-content {
                grid-template-columns: 1fr;
                gap: 3rem;
            }
            
            .tech-visual {
                height: 350px;
                order: -1;
            }
        }
        
        @media (max-width: 768px) {
            .container {
                padding: 0 1.5rem;
            }
            
            section {
                padding: 4rem 0;
            }
            
            .section-title .title-bg {
                font-size: 4rem;
                top: -2rem;
            }
            
            .nav-menu {
                position: fixed;
                top: 0;
                right: -100%;
                width: 80%;
                height: 100vh;
                flex-direction: column;
                background-color: white;
                padding: 6rem 2rem 2rem;
                transition: var(--transition);
                box-shadow: var(--shadow-lg);
                z-index: 1000;
            }
            
            .nav-menu.active {
                right: 0;
            }
            
            .mobile-menu-btn {
                display: block;
            }
            
            .phone-link {
                display: none;
            }
            
            .hero-stats {
                gap: 2rem;
            }
            
            .hero-stat-number {
                font-size: 2.5rem;
            }
            
            .business-grid, .subsidiaries-grid, .partners-grid {
                grid-template-columns: 1fr;
            }
            
            .business-tabs {
                flex-direction: column;
                align-items: center;
            }
            
            .business-tab {
                width: 100%;
                max-width: 300px;
            }
            
            .honors-stats {
                grid-template-columns: 1fr;
            }
        }
        
        @media (max-width: 576px) {
            h1 {
                font-size: 2.5rem;
            }
            
            h2 {
                font-size: 2rem;
            }
            
            .section-title .title-bg {
                font-size: 3rem;
            }
            
            .brand-slogan {
                font-size: 1.5rem;
            }
            
            .hero-stat-number {
                font-size: 2rem;
            }
            
            .timeline-content {
                padding: 2rem;
            }
            
            .business-card, .subsidiary-card {
                padding: 2rem;
            }
        }