/* ====== 关于我们页面独享CSS部分 ====== */
        /* 几何背景元素 */
        .about-shape {
            position: absolute;
            border-radius: 50%;
            background: var(--gradient-accent);
            opacity: 0.05;
            z-index: -1;
        }
        
        .about-shape-1 {
            width: 700px;
            height: 700px;
            top: -300px;
            right: -300px;
            animation: pulseShape 10s ease-in-out infinite;
        }
        
        .about-shape-2 {
            width: 500px;
            height: 500px;
            bottom: 200px;
            left: -200px;
            animation: pulseShape 10s ease-in-out infinite reverse;
            animation-delay: 3s;
        }
        
        @keyframes pulseShape {
            0%, 100% { transform: scale(1); opacity: 0.05; }
            50% { transform: scale(1.05); opacity: 0.08; }
        }
        
        /* 顶部横幅 */
        .about-hero {
            min-height: 80vh;
            display: flex;
            align-items: center;
            position: relative;
            overflow: hidden;
            padding-top: 120px;
            margin-bottom: 60px;
        }
        
        .about-hero-content {
            max-width: 800px;
            position: relative;
            z-index: 2;
        }
        
        .about-badge {
            display: inline-block;
            background: var(--gradient-accent);
            color: white;
            padding: 10px 25px;
            border-radius: 50px;
            font-size: 1rem;
            font-weight: 600;
            margin-bottom: 30px;
            box-shadow: 0 8px 20px rgba(0, 180, 216, 0.2);
            animation: badgeFloat 6s ease-in-out infinite;
        }
        
        @keyframes badgeFloat {
            0%, 100% { transform: translateY(0) rotate(0deg); }
            33% { transform: translateY(-10px) rotate(1deg); }
            66% { transform: translateY(5px) rotate(-1deg); }
        }
        
        .about-title {
            font-size: 3.8rem;
            font-weight: 800;
            line-height: 1.1;
            color: var(--primary);
            margin-bottom: 25px;
        }
        
        .about-title span {
            background: var(--gradient-accent);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        
        .about-subtitle {
            font-size: 1.8rem;
            color: var(--secondary);
            margin-bottom: 30px;
            font-weight: 600;
            position: relative;
            padding-left: 20px;
        }
        
        .about-subtitle:before {
            content: '';
            position: absolute;
            width: 5px;
            height: 100%;
            background: var(--gradient-accent);
            left: 0;
            top: 0;
            border-radius: 5px;
        }
        
        .about-description {
            font-size: 1.2rem;
            color: #555;
            margin-bottom: 40px;
            max-width: 750px;
            line-height: 1.8;
        }
        
        .about-stats {
            display: flex;
            gap: 50px;
            flex-wrap: wrap;
            margin-top: 50px;
        }
        
        .about-stat {
            display: flex;
            flex-direction: column;
        }
        
        .about-stat-number {
            font-size: 3rem;
            font-weight: 800;
            color: var(--primary);
            line-height: 1;
            position: relative;
        }
        
        .about-stat-number:after {
            content: '+';
            position: absolute;
            top: -5px;
            right: -15px;
            font-size: 2rem;
            color: var(--accent);
        }
        
        .about-stat-label {
            font-size: 1rem;
            color: #666;
            margin-top: 8px;
            font-weight: 600;
        }

        
        /* 关于内容区域 */
        .about-section {
            padding: 100px 0;
            position: relative;
        }
        
        .section-header {
            text-align: center;
            max-width: 900px;
            margin: 0 auto 80px;
        }
        
        .section-subtitle {
            display: inline-block;
            color: var(--accent);
            font-weight: 600;
            font-size: 1rem;
            letter-spacing: 2px;
            margin-bottom: 20px;
            text-transform: uppercase;
        }
        
        .section-title {
            font-size: 3rem;
            font-weight: 800;
            color: var(--primary);
            margin-bottom: 20px;
            line-height: 1.2;
        }
        
        .section-desc {
            font-size: 1.2rem;
            color: #666;
            line-height: 1.8;
        }
        
        /* 发展历程时间线 */
        .timeline-container {
            position: relative;
            max-width: 1000px;
            margin: 0 auto;
        }
        
        .timeline-line {
            position: absolute;
            top: 0;
            left: 50%;
            transform: translateX(-50%);
            width: 4px;
            height: 100%;
            background: var(--gradient-accent);
            z-index: 1;
        }
        
        .timeline-items {
            position: relative;
            z-index: 2;
        }
        
        .timeline-item {
            display: flex;
            margin-bottom: 80px;
            opacity: 0;
            transform: translateY(30px);
            transition: opacity 0.8s ease, transform 0.8s ease;
        }
        
        .timeline-item.visible {
            opacity: 1;
            transform: translateY(0);
        }
        
        .timeline-item:nth-child(odd) {
            flex-direction: row-reverse;
        }
        
        .timeline-content {
            background: white;
            border-radius: var(--border-radius);
            padding: 40px;
            box-shadow: var(--shadow);
            width: calc(50% - 40px);
            position: relative;
            transition: var(--transition);
        }
        
        .timeline-item:nth-child(even) .timeline-content {
            margin-left: 40px;
        }
        
        .timeline-item:nth-child(odd) .timeline-content {
            margin-right: 40px;
        }
        
        .timeline-content:hover {
            transform: translateY(-10px);
            box-shadow: var(--shadow-hover);
        }
        
        .timeline-content:before {
            content: '';
            position: absolute;
            width: 30px;
            height: 30px;
            background: var(--gradient-accent);
            border-radius: 50%;
            top: 40px;
            box-shadow: 0 0 0 8px rgba(255, 255, 255, 0.9);
            z-index: 3;
        }
        
        .timeline-item:nth-child(even) .timeline-content:before {
            left: -55px;
        }
        
        .timeline-item:nth-child(odd) .timeline-content:before {
            right: -55px;
        }
        
        .timeline-year {
            font-size: 1.8rem;
            font-weight: 800;
            color: var(--accent);
            margin-bottom: 15px;
            display: inline-block;
            background: rgba(0, 180, 216, 0.1);
            padding: 8px 20px;
            border-radius: 50px;
        }
        
        .timeline-title {
            font-size: 1.5rem;
            color: var(--primary);
            margin-bottom: 15px;
            line-height: 1.3;
        }
        
        .timeline-description {
            color: #666;
            line-height: 1.7;
        }
        
        /* 核心业务体系 */
        .services-section {
            background: rgba(248, 249, 255, 0.5);
            position: relative;
        }
        
        .services-tabs {
            display: flex;
            justify-content: center;
            flex-wrap: wrap;
            gap: 15px;
            margin-bottom: 60px;
        }
        
        .service-tab {
            background: white;
            padding: 18px 35px;
            border-radius: 50px;
            font-weight: 600;
            font-size: 1.1rem;
            color: var(--primary);
            cursor: pointer;
            transition: var(--transition);
            box-shadow: var(--shadow);
            border: 2px solid transparent;
        }
        
        .service-tab:hover {
            transform: translateY(-5px);
            box-shadow: var(--shadow-hover);
        }
        
        .service-tab.active {
            background: var(--gradient-accent);
            color: white;
            box-shadow: 0 10px 30px rgba(0, 180, 216, 0.2);
            border-color: transparent;
        }
        
        .services-content {
            background: white;
            border-radius: var(--border-radius);
            padding: 60px;
            box-shadow: var(--shadow);
        }
        
        .service-category {
            display: none;
        }
        
        .service-category.active {
            display: block;
            animation: fadeIn 0.8s ease;
        }
        
        @keyframes fadeIn {
            from { opacity: 0; transform: translateY(20px); }
            to { opacity: 1; transform: translateY(0); }
        }
        
        .category-title {
            font-size: 2.2rem;
            color: var(--primary);
            margin-bottom: 40px;
            padding-bottom: 20px;
            border-bottom: 3px solid rgba(0, 180, 216, 0.1);
        }
        
        .services-list {
            list-style: none;
            column-count: 2;
            column-gap: 40px;
        }
        
        .services-list li {
            margin-bottom: 25px;
            padding-left: 40px;
            position: relative;
            break-inside: avoid;
        }
        
        .services-list li:before {
            content: '';
            position: absolute;
            left: 0;
            top: 8px;
            width: 20px;
            height: 20px;
            background: rgba(0, 180, 216, 0.2);
            border-radius: 50%;
        }
        
        .services-list li:after {
            content: '';
            position: absolute;
            left: 5px;
            top: 13px;
            width: 10px;
            height: 10px;
            background: var(--accent);
            border-radius: 50%;
        }
        
        .service-name {
            font-weight: 700;
            color: var(--primary);
            display: block;
            margin-bottom: 5px;
            font-size: 1.1rem;
        }
        
        .service-desc {
            color: #666;
            font-size: 0.95rem;
            line-height: 1.6;
        }
        
        /* 专业化子公司矩阵 */
        .subsidiaries-section {
            padding: 100px 0;
        }
        
        .subsidiaries-grid {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(350px, 1fr));
            gap: 30px;
        }
        
        .subsidiary-card {
            background: white;
            border-radius: var(--border-radius);
            padding: 40px 35px;
            transition: var(--transition);
            box-shadow: var(--shadow);
            position: relative;
            overflow: hidden;
            border: 1px solid rgba(15, 26, 54, 0.05);
        }
        
        .subsidiary-card:hover {
            transform: translateY(-10px);
            box-shadow: var(--shadow-hover);
        }
        
        .subsidiary-card:before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 5px;
            background: var(--gradient-accent);
            transform: scaleX(0);
            transform-origin: left;
            transition: var(--transition);
        }
        
        .subsidiary-card:hover:before {
            transform: scaleX(1);
        }
        
        .subsidiary-icon {
            width: 70px;
            height: 70px;
            background: rgba(0, 180, 216, 0.1);
            border-radius: 18px;
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--accent);
            font-size: 2rem;
            margin-bottom: 25px;
            transition: var(--transition);
        }
        
        .subsidiary-card:hover .subsidiary-icon {
            background: var(--gradient-accent);
            color: white;
            transform: rotate(15deg);
        }
        
        .subsidiary-card h3 {
            font-size: 1.5rem;
            color: var(--primary);
            margin-bottom: 15px;
        }
        
        .subsidiary-card p {
            color: #666;
            line-height: 1.7;
        }
        
        /* 技术驱动与质量风控 */
        .tech-section {
            background: var(--gradient-primary);
            color: white;
            padding: 100px 0;
            position: relative;
            overflow: hidden;
        }
        
        .tech-section:before {
            content: '';
            position: absolute;
            width: 100%;
            height: 100%;
            top: 0;
            left: 0;
            background: url("data:image/svg+xml,%3Csvg width='100' height='20' viewBox='0 0 100 20' xmlns='http://www.w3.org/2000/svg'%3E%3Cpath d='M21.184 20c.357-.13.720-.264 1.088-.402l1.768-.661C33.64 15.347 39.647 14 50 14c10.271 0 15.362 1.222 24.629 4.928.955.383 1.869.74 2.75 1.072h6.225c-2.51-.73-5.139-1.691-8.233-2.928C65.888 13.278 60.562 12 50 12c-10.626 0-16.855 1.397-26.66 5.063l-1.767.662c-2.475.923-4.66 1.674-6.724 2.275h6.335zm0-20C13.258 2.892 8.077 4 0 4V2c5.744 0 9.951-.574 14.85-2h6.334zM77.38 0C85.239 2.966 90.502 4 100 4V2c-6.842 0-11.386-.542-16.396-2h-6.225zM0 14c8.44 0 13.718-1.21 22.272-4.402l1.768-.661C33.64 5.347 39.647 4 50 4c10.271 0 15.362 1.222 24.629 4.928C84.112 12.722 89.438 14 100 14v-2c-10.271 0-15.362-1.222-24.629-4.928C65.888 3.278 60.562 2 50 2 39.374 2 33.145 3.397 23.34 7.063l-1.767.662C13.223 10.84 8.163 12 0 12v2z' fill='%2300b4d8' fill-opacity='0.08' fill-rule='evenodd'/%3E%3C/svg%3E");
            opacity: 0.3;
        }
        
        .tech-content {
            position: relative;
            z-index: 2;
        }
        
        .tech-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
            gap: 40px;
            margin-top: 60px;
        }
        
        .tech-card {
            background: rgba(255, 255, 255, 0.08);
            backdrop-filter: blur(10px);
            border-radius: var(--border-radius);
            padding: 40px;
            border: 1px solid rgba(255, 255, 255, 0.1);
            transition: var(--transition);
        }
        
        .tech-card:hover {
            background: rgba(255, 255, 255, 0.12);
            transform: translateY(-10px);
        }
        
        .tech-icon {
            font-size: 2.5rem;
            color: var(--accent-light);
            margin-bottom: 25px;
        }
        
        .tech-card h3 {
            font-size: 1.5rem;
            color: white;
            margin-bottom: 20px;
        }
        
        .tech-card p {
            color: rgba(255, 255, 255, 0.85);
            line-height: 1.7;
        }
        
        /* 响应式设计 */
        @media (max-width: 1200px) {
            .about-title {
                font-size: 3.2rem;
            }
            
            .section-title {
                font-size: 2.5rem;
            }
        }
        
        @media (max-width: 992px) {
            .about-hero {
                min-height: auto;
                padding: 150px 0 80px;
            }
            
            .about-title {
                font-size: 2.8rem;
            }
            
            .timeline-line {
                left: 30px;
            }
            
            .timeline-item {
                flex-direction: row !important;
                margin-left: 60px;
            }
            
            .timeline-content {
                width: 100%;
                margin-left: 0 !important;
                margin-right: 0 !important;
            }
            
            .timeline-content:before {
                left: -55px !important;
                right: auto !important;
            }
            
            .services-list {
                column-count: 1;
            }
            
            .subsidiaries-grid {
                grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
            }
        }
        
        @media (max-width: 768px) {
            .about-title {
                font-size: 2.4rem;
            }
            
            .section-title {
                font-size: 2rem;
            }
            
            .about-subtitle {
                font-size: 1.5rem;
            }
            
            .about-description {
                font-size: 1.1rem;
            }
            
            .services-content {
                padding: 40px 30px;
            }
            
            .services-tabs {
                flex-direction: column;
                align-items: center;
            }
            
            .service-tab {
                width: 100%;
                max-width: 300px;
                text-align: center;
            }
            
            .subsidiaries-grid {
                grid-template-columns: 1fr;
            }
            
            .tech-grid {
                grid-template-columns: 1fr;
            }
        }
        
        @media (max-width: 480px) {
            .about-title {
                font-size: 2rem;
            }
            
            .section-title {
                font-size: 1.8rem;
            }
            
            .about-stats {
                gap: 30px;
            }
            
            .about-stat-number {
                font-size: 2.5rem;
            }
            
            .category-title {
                font-size: 1.8rem;
            }
        }