:root {
            --primary-color: #0056b3;
            --secondary-color: #17a2b8;
            --accent-color: #28a745;
            --dark-color: #343a40;
            --light-color: #f8f9fa;
        }
        body {
            font-family: "Microsoft YaHei", "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
            overflow-x: hidden;
            color: #333;
        }
        .hero-section {
            background: linear-gradient(rgba(0, 84, 179, 0.85), rgba(0, 84, 179, 0.9)), url('https://images.unsplash.com/photo-1581094794329-c8112a89af12?ixlib=rb-4.0.3&auto=format&fit=crop&w=1920&q=80') no-repeat center center;
            background-size: cover;
            color: white;
            padding: 8rem 0;
        }
        .section-title {
            position: relative;
            padding-bottom: 15px;
            margin-bottom: 3rem;
        }
        .section-title::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 50%;
            transform: translateX(-50%);
            width: 80px;
            height: 4px;
            background: var(--primary-color);
            border-radius: 2px;
        }
        .service-card {
            transition: all 0.3s ease;
            border: 1px solid #e9ecef;
            border-radius: 10px;
            overflow: hidden;
            height: 100%;
        }
        .service-card:hover {
            transform: translateY(-10px);
            box-shadow: 0 15px 30px rgba(0, 0, 0, 0.1);
            border-color: var(--primary-color);
        }
        .news-card {
            border-left: 4px solid transparent;
            transition: all 0.3s ease;
        }
        .news-card:hover {
            border-left-color: var(--primary-color);
            box-shadow: 0 5px 15px rgba(0, 0, 0, 0.05);
        }
        .flink {
            display: inline-block;
            padding: 8px 20px;
            margin: 5px 10px;
            background: #f8f9fa;
            border-radius: 50px;
            color: #495057;
            text-decoration: none;
            transition: all 0.3s ease;
            border: 1px solid #dee2e6;
        }
        .flink:hover {
            background: var(--primary-color);
            color: white;
            transform: translateY(-2px);
        }
        .contact-icon {
            width: 60px;
            height: 60px;
            background: var(--primary-color);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            color: white;
            font-size: 1.5rem;
            margin: 0 auto 1rem;
        }
        .navbar {
            box-shadow: 0 2px 15px rgba(0, 0, 0, 0.08);
            background: rgba(255, 255, 255, 0.98) !important;
            backdrop-filter: blur(10px);
        }
        .footer {
            background: linear-gradient(to right, #1e3c72, #2a5298);
            color: white;
        }
        .footer a {
            color: #e9ecef;
            text-decoration: none;
            transition: color 0.3s ease;
        }
        .footer a:hover {
            color: white;
            text-decoration: underline;
        }
        .stat-number {
            font-size: 3rem;
            font-weight: 700;
            color: var(--primary-color);
            line-height: 1;
        }
        .client-logo {
            filter: grayscale(100%);
            opacity: 0.7;
            transition: all 0.3s ease;
        }
        .client-logo:hover {
            filter: grayscale(0);
            opacity: 1;
        }
        .timeline-item {
            position: relative;
            padding-left: 30px;
            margin-bottom: 2.5rem;
        }
        .timeline-item::before {
            content: '';
            position: absolute;
            left: 0;
            top: 8px;
            width: 12px;
            height: 12px;
            background: var(--primary-color);
            border-radius: 50%;
        }
        .timeline-item::after {
            content: '';
            position: absolute;
            left: 5px;
            top: 8px;
            width: 2px;
            height: calc(100% + 2rem);
            background: #dee2e6;
            z-index: -1;
        }
        .timeline-item:last-child::after {
            display: none;
        }
        @media (max-width: 768px) {
            .hero-section {
                padding: 5rem 0;
            }
            .section-title::after {
                width: 60px;
            }
            .stat-number {
                font-size: 2.5rem;
            }
        }