:root {
            --primary-color: #0066cc;
            --secondary-color: #f8f9fa;
            --accent-color: #ff6b35;
        }
        body {
            font-family: 'Segoe UI', 'Microsoft YaHei', sans-serif;
            color: #333;
            line-height: 1.8;
        }
        .navbar {
            background-color: rgba(255, 255, 255, 0.95);
            box-shadow: 0 4px 12px rgba(0,0,0,0.08);
            padding: 15px 0;
        }
        .navbar-brand {
            font-weight: 700;
            font-size: 1.8rem;
            color: var(--primary-color);
        }
        .nav-link {
            font-weight: 500;
            margin: 0 10px;
            color: #555 !important;
            transition: color 0.3s;
        }
        .nav-link:hover {
            color: var(--primary-color) !important;
        }
        .hero {
            background: linear-gradient(135deg, var(--primary-color) 0%, #004d99 100%);
            color: white;
            padding: 120px 0;
            position: relative;
            overflow: hidden;
        }
        .hero h1 {
            font-size: 3.5rem;
            font-weight: 800;
            margin-bottom: 25px;
        }
        .hero p {
            font-size: 1.3rem;
            opacity: 0.9;
        }
        .btn-primary {
            background-color: var(--accent-color);
            border: none;
            padding: 12px 30px;
            border-radius: 50px;
            font-weight: 600;
            transition: all 0.3s ease;
        }
        .btn-primary:hover {
            background-color: #e55a2b;
            transform: translateY(-5px);
            box-shadow: 0 10px 20px rgba(255,107,53,0.3);
        }
        section {
            padding: 80px 0;
        }
        .section-title {
            text-align: center;
            margin-bottom: 60px;
            color: var(--primary-color);
            font-weight: 700;
            position: relative;
        }
        .section-title::after {
            content: '';
            display: block;
            width: 80px;
            height: 4px;
            background-color: var(--accent-color);
            margin: 15px auto;
            border-radius: 2px;
        }
        .card {
            border: none;
            border-radius: 15px;
            box-shadow: 0 10px 30px rgba(0,0,0,0.08);
            transition: transform 0.4s, box-shadow 0.4s;
            height: 100%;
        }
        .card:hover {
            transform: translateY(-15px);
            box-shadow: 0 20px 40px rgba(0,0,0,0.12);
        }
        .card-icon {
            font-size: 3rem;
            color: var(--primary-color);
            margin-bottom: 20px;
        }
        .service-card .card-body {
            padding: 30px;
        }
        .team-img {
            width: 150px;
            height: 150px;
            object-fit: cover;
            border-radius: 50%;
            border: 5px solid #f0f0f0;
            margin: 0 auto 20px;
        }
        .contact-info li {
            margin-bottom: 15px;
            font-size: 1.1rem;
        }
        .contact-info i {
            color: var(--primary-color);
            margin-right: 10px;
            width: 24px;
        }
        footer {
            background-color: #2c3e50;
            color: #ecf0f1;
            padding: 60px 0 30px;
        }
        .friend-links {
            background-color: #34495e;
            padding: 30px;
            border-radius: 10px;
            margin-top: 40px;
        }
        .flink {
            display: inline-block;
            background-color: #4a6572;
            color: #ecf0f1;
            padding: 10px 20px;
            margin: 8px;
            border-radius: 50px;
            text-decoration: none;
            transition: background-color 0.3s;
        }
        .flink:hover {
            background-color: var(--accent-color);
            color: white;
        }
        .form-control {
            border-radius: 10px;
            border: 1px solid #ddd;
            padding: 15px;
            margin-bottom: 20px;
        }
        .form-control:focus {
            border-color: var(--primary-color);
            box-shadow: 0 0 0 0.25rem rgba(0,102,204,0.25);
        }
        @media (max-width: 768px) {
            .hero h1 {
                font-size: 2.5rem;
            }
            .hero p {
                font-size: 1.1rem;
            }
            section {
                padding: 60px 0;
            }
            .card {
                margin-bottom: 30px;
            }
        }
        img {
            max-width: 100%;
            height: auto;
            border-radius: 10px;
        }
        .stat-number {
            font-size: 3rem;
            font-weight: 700;
            color: var(--primary-color);
        }
        .stat-label {
            font-size: 1.2rem;
            color: #666;
        }