:root {
            --primary-color: #1a5f7a;
            --secondary-color: #2d8bc0;
            --accent-color: #ff7e30;
            --light-color: #f8f9fa;
            --dark-color: #343a40;
        }
        body {
            font-family: 'Segoe UI', 'Microsoft YaHei', sans-serif;
            color: #333;
            line-height: 1.6;
        }
        .navbar-brand {
            font-weight: 700;
            font-size: 1.8rem;
            color: var(--primary-color) !important;
        }
        .navbar-nav .nav-link {
            font-weight: 500;
            padding: 0.5rem 1.2rem !important;
            transition: color 0.3s;
        }
        .navbar-nav .nav-link:hover, .navbar-nav .nav-link.active {
            color: var(--accent-color) !important;
        }
        .hero-section {
            background: linear-gradient(rgba(26, 95, 122, 0.85), rgba(45, 139, 192, 0.8)), url('https://images.unsplash.com/photo-1541888946425-d81bb19240f5?ixlib=rb-4.0.3&auto=format&fit=crop&w=2070&q=80');
            background-size: cover;
            background-position: center;
            color: white;
            padding: 8rem 0;
        }
        .section-title {
            position: relative;
            padding-bottom: 15px;
            margin-bottom: 45px;
            color: var(--primary-color);
            font-weight: 700;
        }
        .section-title:after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 50%;
            transform: translateX(-50%);
            width: 80px;
            height: 4px;
            background: var(--accent-color);
        }
        .service-card, .project-card {
            border: none;
            border-radius: 10px;
            overflow: hidden;
            transition: transform 0.4s, box-shadow 0.4s;
            height: 100%;
            box-shadow: 0 5px 15px rgba(0,0,0,0.05);
        }
        .service-card:hover, .project-card:hover {
            transform: translateY(-10px);
            box-shadow: 0 15px 30px rgba(0,0,0,0.1);
        }
        .service-icon {
            width: 80px;
            height: 80px;
            background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 25px;
            color: white;
            font-size: 2rem;
        }
        .stats-section {
            background: linear-gradient(rgba(26, 95, 122, 0.9), rgba(26, 95, 122, 0.95)), url('https://images.unsplash.com/photo-1519501025264-65ba15a82390?ixlib=rb-4.0.3&auto=format&fit=crop&w=1964&q=80');
            background-size: cover;
            background-attachment: fixed;
            color: white;
            padding: 5rem 0;
        }
        .stat-number {
            font-size: 3.5rem;
            font-weight: 800;
            margin-bottom: 0.5rem;
            color: var(--accent-color);
        }
        .friendlink .flink {
            display: inline-block;
            padding: 8px 20px;
            margin: 5px 10px;
            background-color: #f1f8ff;
            border-radius: 30px;
            color: var(--primary-color);
            text-decoration: none;
            font-weight: 500;
            transition: all 0.3s;
            border: 1px solid #d1e7ff;
        }
        .friendlink .flink:hover {
            background-color: var(--primary-color);
            color: white;
            transform: scale(1.05);
        }
        footer a {
            color: #ddd;
            text-decoration: none;
            transition: color 0.3s;
        }
        footer a:hover {
            color: var(--accent-color);
        }
        .btn-custom {
            background: linear-gradient(to right, var(--primary-color), var(--secondary-color));
            color: white;
            padding: 12px 30px;
            border-radius: 30px;
            font-weight: 600;
            border: none;
            transition: all 0.3s;
        }
        .btn-custom:hover {
            background: linear-gradient(to right, var(--secondary-color), var(--accent-color));
            color: white;
            transform: translateY(-3px);
            box-shadow: 0 10px 20px rgba(0,0,0,0.1);
        }
        .contact-info i {
            width: 50px;
            height: 50px;
            background-color: rgba(26, 95, 122, 0.1);
            border-radius: 50%;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            color: var(--primary-color);
            font-size: 1.2rem;
            margin-right: 15px;
        }
        .img-hover-zoom {
            overflow: hidden;
            border-radius: 10px;
        }
        .img-hover-zoom img {
            transition: transform 0.5s ease;
        }
        .img-hover-zoom:hover img {
            transform: scale(1.05);
        }
        @media (max-width: 768px) {
            .hero-section {
                padding: 5rem 0;
            }
            .section-title {
                font-size: 1.8rem;
            }
            .stat-number {
                font-size: 2.5rem;
            }
        }