:root {
            --primary-blue: #0056b3;
            --secondary-blue: #007bff;
            --accent-orange: #ff6b35;
            --light-gray: #f8f9fa;
            --dark-gray: #343a40;
            --text-gray: #6c757d;
        }
        body {
            font-family: 'Noto Sans SC', 'Microsoft YaHei', sans-serif;
            line-height: 1.6;
            color: var(--dark-gray);
            overflow-x: hidden;
        }
        .hero-section {
            background: linear-gradient(rgba(0, 84, 179, 0.85), rgba(0, 123, 255, 0.8)), 
                        url('https://images.unsplash.com/photo-1485827404703-89b55fcc595e?ixlib=rb-4.0.3&auto=format&fit=crop&w=2070&q=80') center/cover no-repeat;
            color: white;
            padding: 150px 0 100px;
            position: relative;
        }
        .nav-bar {
            background-color: rgba(255, 255, 255, 0.95);
            backdrop-filter: blur(10px);
            box-shadow: 0 2px 20px rgba(0, 0, 0, 0.08);
            transition: all 0.3s ease;
        }
        .nav-bar.scrolled {
            padding: 8px 0;
            background-color: rgba(255, 255, 255, 0.98);
        }
        .navbar-brand {
            font-weight: 700;
            font-size: 1.8rem;
            color: var(--primary-blue) !important;
        }
        .nav-link {
            font-weight: 500;
            margin: 0 8px;
            color: var(--dark-gray) !important;
            transition: color 0.3s;
        }
        .nav-link:hover, .nav-link.active {
            color: var(--secondary-blue) !important;
        }
        .section-padding {
            padding: 80px 0;
        }
        .section-title {
            position: relative;
            margin-bottom: 60px;
            text-align: center;
        }
        .section-title h2 {
            font-weight: 700;
            color: var(--primary-blue);
            display: inline-block;
            position: relative;
            padding-bottom: 15px;
        }
        .section-title h2:after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 50%;
            transform: translateX(-50%);
            width: 80px;
            height: 3px;
            background: var(--accent-orange);
        }
        .icon-box {
            width: 70px;
            height: 70px;
            border-radius: 50%;
            background-color: var(--light-gray);
            display: flex;
            align-items: center;
            justify-content: center;
            margin-bottom: 20px;
            transition: all 0.3s ease;
        }
        .feature-card:hover .icon-box {
            background-color: var(--primary-blue);
            color: white;
            transform: translateY(-5px);
        }
        .feature-card {
            padding: 30px;
            border-radius: 10px;
            background: white;
            box-shadow: 0 5px 20px rgba(0, 0, 0, 0.05);
            transition: transform 0.3s ease, box-shadow 0.3s ease;
            height: 100%;
        }
        .feature-card:hover {
            transform: translateY(-10px);
            box-shadow: 0 15px 30px rgba(0, 0, 0, 0.1);
        }
        .btn-primary-custom {
            background-color: var(--primary-blue);
            border-color: var(--primary-blue);
            padding: 12px 30px;
            font-weight: 600;
            border-radius: 30px;
            transition: all 0.3s;
        }
        .btn-primary-custom:hover {
            background-color: #004494;
            border-color: #004494;
            transform: translateY(-2px);
            box-shadow: 0 5px 15px rgba(0, 86, 179, 0.3);
        }
        .client-logo {
            filter: grayscale(100%);
            opacity: 0.6;
            transition: all 0.3s;
        }
        .client-logo:hover {
            filter: grayscale(0);
            opacity: 1;
        }
        .contact-info-box {
            padding: 25px;
            border-radius: 10px;
            background: white;
            box-shadow: 0 5px 15px rgba(0, 0, 0, 0.05);
            text-align: center;
            margin-bottom: 30px;
            transition: transform 0.3s;
        }
        .contact-info-box:hover {
            transform: translateY(-5px);
        }
        .contact-icon {
            width: 60px;
            height: 60px;
            background-color: var(--light-gray);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 15px;
            color: var(--primary-blue);
            font-size: 1.5rem;
        }
        .footer {
            background-color: var(--dark-gray);
            color: white;
            padding: 70px 0 20px;
        }
        .footer-links h5 {
            color: white;
            margin-bottom: 25px;
            position: relative;
            padding-bottom: 10px;
        }
        .footer-links h5:after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 40px;
            height: 2px;
            background: var(--accent-orange);
        }
        .footer-links ul {
            list-style: none;
            padding-left: 0;
        }
        .footer-links li {
            margin-bottom: 12px;
        }
        .footer-links a {
            color: rgba(255, 255, 255, 0.8);
            text-decoration: none;
            transition: color 0.3s;
        }
        .footer-links a:hover {
            color: white;
            padding-left: 5px;
        }
        .copyright {
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            padding-top: 20px;
            margin-top: 50px;
            color: rgba(255, 255, 255, 0.7);
            font-size: 0.9rem;
        }
        .flink {
            display: inline-block;
            padding: 8px 20px;
            margin: 5px 10px;
            background-color: var(--light-gray);
            border-radius: 30px;
            color: var(--dark-gray);
            text-decoration: none;
            transition: all 0.3s;
        }
        .flink:hover {
            background-color: var(--primary-blue);
            color: white;
            transform: translateY(-3px);
        }
        .service-img {
            border-radius: 10px;
            overflow: hidden;
            box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
            margin-bottom: 20px;
        }
        .stat-number {
            font-size: 3rem;
            font-weight: 700;
            color: var(--primary-blue);
            margin-bottom: 5px;
        }
        .stat-label {
            color: var(--text-gray);
            font-size: 1.1rem;
        }
        .timeline-item {
            position: relative;
            padding-left: 30px;
            margin-bottom: 40px;
        }
        .timeline-item:before {
            content: '';
            position: absolute;
            left: 0;
            top: 5px;
            width: 12px;
            height: 12px;
            background-color: var(--primary-blue);
            border-radius: 50%;
        }
        .timeline-item:after {
            content: '';
            position: absolute;
            left: 5px;
            top: 20px;
            width: 2px;
            height: calc(100% + 20px);
            background-color: #e9ecef;
        }
        .timeline-item:last-child:after {
            display: none;
        }
        @media (max-width: 768px) {
            .hero-section {
                padding: 120px 0 60px;
            }
            .section-padding {
                padding: 50px 0;
            }
            .section-title h2 {
                font-size: 1.8rem;
            }
            .navbar-brand {
                font-size: 1.5rem;
            }
        }