/* ===== 关于我们页面独享CSS ===== */
        
        /* 页面标题区域 */
        .page-header {
            background: var(--gradient);
            color: white;
            padding: 150px 0 80px;
            text-align: center;
            margin-top: 70px;
            position: relative;
            overflow: hidden;
        }
        
        .page-header:before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background: url('data:image/svg+xml;utf8,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 100 100" preserveAspectRatio="none"><path d="M0,0 L100,0 L100,100 Z" fill="rgba(255,255,255,0.1)"/></svg>');
            background-size: cover;
        }
        
        .page-header h1 {
            font-size: 3rem;
            margin-bottom: 20px;
            font-weight: 800;
            position: relative;
            z-index: 1;
        }
        
        .page-header p {
            font-size: 1.2rem;
            max-width: 700px;
            margin: 0 auto;
            position: relative;
            z-index: 1;
        }
        
        /* 关于我们内容区域 */
        .about-content {
            padding: 80px 0;
        }
        
        .about-section {
            margin-bottom: 80px;
            opacity: 0;
            transform: translateY(30px);
            transition: all 0.8s ease;
        }
        
        .about-section.animate {
            opacity: 1;
            transform: translateY(0);
        }
        
        .about-section h2 {
            font-size: 2.2rem;
            margin-bottom: 30px;
            color: var(--dark-color);
            font-weight: 800;
            position: relative;
            padding-bottom: 15px;
        }
        
        .about-section h2:after {
            content: '';
            position: absolute;
            left: 0;
            bottom: 0;
            width: 80px;
            height: 3px;
            background: var(--gradient);
            border-radius: 2px;
        }
        
        .about-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 50px;
            align-items: center;
        }
        
        .about-text {
            font-size: 1.05rem;
            line-height: 1.8;
            color: #555;
        }
        
        .about-text p {
            margin-bottom: 20px;
        }
        
        .highlight {
            color: var(--primary-color);
            font-weight: 700;
            position: relative;
        }
        
        .highlight:after {
            content: '';
            position: absolute;
            bottom: -2px;
            left: 0;
            width: 100%;
            height: 3px;
            background: var(--accent-color);
            border-radius: 2px;
        }
        
        .about-image {
            border-radius: 12px;
            overflow: hidden;
            box-shadow: 0 15px 40px rgba(0,0,0,0.1);
            position: relative;
        }
        
        .about-image:before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background: var(--gradient);
            opacity: 0.1;
            z-index: 1;
            transition: var(--transition);
        }
        
        .about-image:hover:before {
            opacity: 0;
        }
        
        .about-image img {
            width: 100%;
            height: auto;
            display: block;
            transition: var(--transition);
        }
        
        .about-image:hover img {
            transform: scale(1.05);
        }
        
        /* 我们的优势 */
        .advantages-section {
            background: var(--light-color);
            padding: 80px 0;
            position: relative;
        }
        
        .advantages-section:before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 10px;
            background: var(--gradient);
        }
        
        .advantages-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 30px;
        }
        
        .advantage-card {
            background: white;
            border-radius: 12px;
            padding: 40px 30px;
            text-align: center;
            box-shadow: 0 10px 30px rgba(0,0,0,0.08);
            transition: var(--transition);
            position: relative;
            opacity: 0;
            transform: translateY(30px);
        }
        
        .advantage-card:before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 5px;
            background: var(--gradient);
            border-radius: 12px 12px 0 0;
        }
        
        .advantage-card.animate {
            opacity: 1;
            transform: translateY(0);
        }
        
        .advantage-card:hover {
            transform: translateY(-10px);
            box-shadow: 0 15px 40px rgba(0,0,0,0.15);
        }
        
        .advantage-icon {
            width: 80px;
            height: 80px;
            background: var(--gradient);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 25px;
            color: white;
            font-size: 2rem;
            position: relative;
            animation: pulse 2s infinite;
        }
        
        @keyframes pulse {
            0% { box-shadow: 0 0 0 0 rgba(26, 115, 232, 0.7); }
            70% { box-shadow: 0 0 0 15px rgba(26, 115, 232, 0); }
            100% { box-shadow: 0 0 0 0 rgba(26, 115, 232, 0); }
        }
        
        .advantage-card h3 {
            font-size: 1.5rem;
            margin-bottom: 15px;
            color: var(--dark-color);
            font-weight: 700;
        }
        
        .advantage-card p {
            color: #666;
            line-height: 1.7;
        }
        
        /* 发展历程 */
        .timeline-section {
            padding: 80px 0;
        }
        
        .timeline {
            position: relative;
            max-width: 800px;
            margin: 0 auto;
        }
        
        .timeline:before {
            content: '';
            position: absolute;
            top: 0;
            left: 50%;
            transform: translateX(-50%);
            width: 3px;
            height: 100%;
            background: var(--gradient);
        }
        
        .timeline-item {
            position: relative;
            margin-bottom: 50px;
            opacity: 0;
            transform: translateY(30px);
            transition: all 0.8s ease;
        }
        
        .timeline-item.animate {
            opacity: 1;
            transform: translateY(0);
        }
        
        .timeline-item:nth-child(odd) {
            padding-right: calc(50% + 30px);
            text-align: right;
        }
        
        .timeline-item:nth-child(even) {
            padding-left: calc(50% + 30px);
        }
        
        .timeline-dot {
            position: absolute;
            top: 0;
            left: 50%;
            transform: translateX(-50%);
            width: 20px;
            height: 20px;
            background: var(--gradient);
            border-radius: 50%;
            z-index: 1;
            box-shadow: 0 0 0 5px white, 0 0 0 10px var(--primary-color);
        }
        
        .timeline-content {
            background: white;
            padding: 25px;
            border-radius: 12px;
            box-shadow: 0 10px 30px rgba(0,0,0,0.08);
            position: relative;
        }
        
        .timeline-content:before {
            content: '';
            position: absolute;
            top: 15px;
            width: 0;
            height: 0;
            border-style: solid;
        }
        
        .timeline-item:nth-child(odd) .timeline-content:before {
            right: -15px;
            border-width: 10px 0 10px 15px;
            border-color: transparent transparent transparent white;
        }
        
        .timeline-item:nth-child(even) .timeline-content:before {
            left: -15px;
            border-width: 10px 15px 10px 0;
            border-color: transparent white transparent transparent;
        }
        
        .timeline-year {
            font-size: 1.3rem;
            font-weight: 700;
            color: var(--primary-color);
            margin-bottom: 10px;
        }
        
        .timeline-content h3 {
            font-size: 1.3rem;
            margin-bottom: 10px;
            color: var(--dark-color);
            font-weight: 700;
        }
        
        /* 响应式设计 */
        @media (max-width: 992px) {
            .footer-container {
                grid-template-columns: repeat(2, 1fr);
            }
            
            .about-grid {
                grid-template-columns: 1fr;
            }
            
            .advantages-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            
            .timeline:before {
                left: 30px;
            }
            
            .timeline-item:nth-child(odd),
            .timeline-item:nth-child(even) {
                padding-left: 80px;
                padding-right: 0;
                text-align: left;
            }
            
            .timeline-dot {
                left: 30px;
            }
            
            .timeline-item:nth-child(odd) .timeline-content:before,
            .timeline-item:nth-child(even) .timeline-content:before {
                left: -15px;
                border-width: 10px 15px 10px 0;
                border-color: transparent white transparent transparent;
            }
        }
        
        @media (max-width: 768px) {
            .header-container {
                flex-wrap: wrap;
            }
            
            .mobile-menu-btn {
                display: block;
            }
            
            nav {
                width: 100%;
                max-height: 0;
                overflow: hidden;
                transition: max-height 0.5s ease;
            }
            
            nav.active {
                max-height: 300px;
            }
            
            nav ul {
                flex-direction: column;
                padding: 20px 0;
            }
            
            nav ul li {
                margin: 10px 0;
            }
            
            .page-header h1 {
                font-size: 2.5rem;
            }
            
            .about-section h2 {
                font-size: 1.8rem;
            }
            
            .advantages-grid {
                grid-template-columns: 1fr;
            }
        }
        
        @media (max-width: 576px) {
            .footer-container {
                grid-template-columns: 1fr;
            }
            
            .page-header h1 {
                font-size: 2rem;
            }
            
            .phone-number {
                font-size: 0.9rem;
                padding: 6px 12px;
            }
            
            .timeline:before {
                left: 20px;
            }
            
            .timeline-item:nth-child(odd),
            .timeline-item:nth-child(even) {
                padding-left: 60px;
            }
            
            .timeline-dot {
                left: 20px;
            }
        }