/* ===== 独享CSS部分 - 关于我们页面 ===== */
        .about-section {
            padding-top: 150px;
            padding-bottom: 100px;
            background: #f8f9fa;
            min-height: 100vh;
        }

        .about-header {
            text-align: center;
            margin-bottom: 60px;
        }

        .about-header h1 {
            font-size: 3rem;
            color: var(--primary-color);
            margin-bottom: 20px;
            position: relative;
            display: inline-block;
        }

        .about-header h1::after {
            content: '';
            position: absolute;
            bottom: -15px;
            left: 50%;
            transform: translateX(-50%);
            width: 120px;
            height: 4px;
            background: var(--gradient-secondary);
            border-radius: 2px;
        }

        .about-header p {
            font-size: 1.2rem;
            color: var(--text-light);
            max-width: 700px;
            margin: 0 auto;
        }

        /* 公司简介区域 - 独享部分 */
        .company-intro {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 60px;
            align-items: center;
            margin-bottom: 80px;
        }

        .intro-content h2 {
            font-size: 2.2rem;
            color: var(--primary-color);
            margin-bottom: 25px;
            position: relative;
            padding-bottom: 15px;
        }

        .intro-content h2::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 80px;
            height: 3px;
            background: var(--secondary-color);
            border-radius: 2px;
        }

        .intro-content p {
            margin-bottom: 20px;
            line-height: 1.8;
            text-align: justify;
        }

        .intro-stats {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 20px;
            margin-top: 40px;
        }

        .stat-item {
            text-align: center;
            padding: 25px 15px;
            background: white;
            border-radius: var(--border-radius);
            box-shadow: var(--box-shadow);
            transition: var(--transition);
            position: relative;
            overflow: hidden;
        }

        .stat-item:hover {
            transform: translateY(-10px);
            box-shadow: 0 15px 30px rgba(0, 0, 0, 0.15);
        }

        .stat-number {
            font-size: 2.8rem;
            font-weight: 800;
            margin-bottom: 10px;
            color: var(--secondary-color);
            position: relative;
        }

        .stat-text {
            font-weight: 600;
            color: var(--primary-color);
        }

        .intro-image {
            position: relative;
        }

        .intro-image img {
            width: 100%;
            border-radius: var(--border-radius);
            box-shadow: var(--box-shadow);
            transition: var(--transition);
        }

        .intro-image:hover img {
            transform: scale(1.03);
        }

        .intro-image::before {
            content: '';
            position: absolute;
            top: -20px;
            right: -20px;
            width: 100%;
            height: 100%;
            border: 5px solid var(--secondary-color);
            border-radius: var(--border-radius);
            z-index: -1;
            transition: var(--transition);
        }

        .intro-image:hover::before {
            top: -10px;
            right: -10px;
        }

        /* 服务特色区域 - 独享部分 */
        .service-features {
            background: white;
            border-radius: var(--border-radius);
            box-shadow: var(--box-shadow);
            padding: 60px 40px;
            margin-bottom: 80px;
            position: relative;
            overflow: hidden;
        }

        .service-features::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 5px;
            background: var(--gradient-primary);
        }

        .features-title {
            text-align: center;
            font-size: 2rem;
            color: var(--primary-color);
            margin-bottom: 50px;
            position: relative;
            padding-bottom: 20px;
        }

        .features-title::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 50%;
            transform: translateX(-50%);
            width: 100px;
            height: 3px;
            background: var(--secondary-color);
            border-radius: 2px;
        }

        .features-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 40px;
        }

        .feature-item {
            display: flex;
            gap: 20px;
            padding: 25px;
            background: var(--light-color);
            border-radius: var(--border-radius);
            transition: var(--transition);
        }

        .feature-item:hover {
            background: white;
            transform: translateY(-5px);
            box-shadow: 0 10px 25px rgba(0, 0, 0, 0.1);
        }

        .feature-icon {
            width: 70px;
            height: 70px;
            background: var(--gradient-primary);
            color: white;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.8rem;
            flex-shrink: 0;
            animation: pulse 2s infinite;
        }

        .feature-content h3 {
            font-size: 1.4rem;
            color: var(--primary-color);
            margin-bottom: 10px;
        }

        .feature-content p {
            color: var(--text-light);
            line-height: 1.7;
        }

        /* 核心优势区域 - 独享部分 */
        .core-advantages {
            margin-bottom: 80px;
        }

        .advantages-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 30px;
        }

        .advantage-card {
            background: white;
            border-radius: var(--border-radius);
            box-shadow: var(--box-shadow);
            padding: 40px 30px;
            text-align: center;
            transition: var(--transition);
            position: relative;
            overflow: hidden;
        }

        .advantage-card:hover {
            transform: translateY(-10px);
            box-shadow: 0 15px 30px rgba(0, 0, 0, 0.15);
        }

        .advantage-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 5px;
            background: var(--gradient-secondary);
            transform: scaleX(0);
            transform-origin: left;
            transition: transform 0.5s ease;
        }

        .advantage-card:hover::before {
            transform: scaleX(1);
        }

        .advantage-icon {
            font-size: 3rem;
            color: var(--primary-color);
            margin-bottom: 25px;
            display: inline-block;
            animation: float 4s ease-in-out infinite;
        }

        .advantage-card h3 {
            font-size: 1.5rem;
            color: var(--primary-color);
            margin-bottom: 15px;
        }

        .advantage-card p {
            color: var(--text-light);
            line-height: 1.7;
        }

        /* 服务承诺区域 - 独享部分 */
        .service-promise {
            background: var(--gradient-primary);
            color: white;
            border-radius: var(--border-radius);
            padding: 60px 40px;
            text-align: center;
            position: relative;
            overflow: hidden;
        }

        .service-promise::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" viewBox="0 0 100 100" width="100" height="100" opacity="0.1"><path d="M20,20 L80,20 L80,80 L20,80 Z" fill="none" stroke="white" stroke-width="2"/></svg>');
            animation: floatBackground 20s linear infinite;
        }

        @keyframes floatBackground {
            0% { background-position: 0 0; }
            100% { background-position: 100px 100px; }
        }

        .promise-title {
            font-size: 2.2rem;
            margin-bottom: 30px;
            position: relative;
            z-index: 1;
        }

        .promise-content {
            max-width: 800px;
            margin: 0 auto;
            font-size: 1.1rem;
            line-height: 1.8;
            position: relative;
            z-index: 1;
        }

        .promise-highlight {
            font-weight: 700;
            color: var(--secondary-color);
            font-size: 1.2rem;
            margin-top: 25px;
            display: block;
        }

        /* 响应式设计 - 独享部分 */
        @media (max-width: 992px) {
            .company-intro {
                grid-template-columns: 1fr;
            }
            
            .features-grid {
                grid-template-columns: 1fr;
            }
            
            .advantages-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            
            .about-header h1 {
                font-size: 2.5rem;
            }
        }

        @media (max-width: 768px) {
            .nav-links, .phone-number {
                display: none;
            }
            
            .mobile-menu-btn {
                display: block;
            }
            
            .about-section {
                padding-top: 120px;
            }
            
            .about-header h1 {
                font-size: 2.2rem;
            }
            
            .intro-stats {
                grid-template-columns: 1fr;
            }
            
            .advantages-grid {
                grid-template-columns: 1fr;
            }
            
            .feature-item {
                flex-direction: column;
                text-align: center;
            }
            
            .footer-content {
                grid-template-columns: repeat(2, 1fr);
            }
        }

        @media (max-width: 576px) {
            .about-section {
                padding: 100px 0 60px;
            }
            
            .about-header h1 {
                font-size: 2rem;
            }
            
            .service-features, .service-promise {
                padding: 40px 25px;
            }
            
            .footer-content {
                grid-template-columns: 1fr;
            }
        }