:root {
            --primary-color: #1a237e;
            --secondary-color: #ff9800;
            --light-bg: #f8f9fa;
            --dark-text: #333;
        }
        body {
            font-family: 'Microsoft YaHei', 'Segoe UI', sans-serif;
            color: var(--dark-text);
            line-height: 1.8;
        }
        .navbar {
            background-color: rgba(26, 35, 126, 0.95);
            box-shadow: 0 4px 12px rgba(0,0,0,0.1);
        }
        .navbar-nav .nav-link {
            color: #fff !important;
            font-weight: 500;
            margin: 0 10px;
            transition: color 0.3s;
        }
        .navbar-nav .nav-link:hover {
            color: var(--secondary-color) !important;
        }
        .hero-section {
            background: linear-gradient(rgba(26, 35, 126, 0.8), rgba(26, 35, 126, 0.9)), url('https://placeimg.com/1920/800/arch') no-repeat center center/cover;
            color: white;
            padding: 150px 0;
        }
        .hero-section h1 {
            font-size: 3.5rem;
            font-weight: 700;
            margin-bottom: 20px;
        }
        .section-title {
            color: var(--primary-color);
            border-left: 5px solid var(--secondary-color);
            padding-left: 15px;
            margin-bottom: 40px;
            font-weight: 700;
        }
        .service-card, .case-card, .team-card {
            border: none;
            border-radius: 12px;
            box-shadow: 0 6px 15px rgba(0,0,0,0.08);
            transition: transform 0.3s, box-shadow 0.3s;
            height: 100%;
            overflow: hidden;
        }
        .service-card:hover, .case-card:hover, .team-card:hover {
            transform: translateY(-10px);
            box-shadow: 0 12px 25px rgba(0,0,0,0.15);
        }
        .service-icon {
            font-size: 3rem;
            color: var(--primary-color);
            margin-bottom: 20px;
        }
        .friendlink .flink {
            display: inline-block;
            background: var(--light-bg);
            color: var(--primary-color);
            padding: 10px 20px;
            margin: 8px;
            border-radius: 8px;
            text-decoration: none;
            font-weight: 500;
            transition: background 0.3s, color 0.3s;
            border: 1px solid #ddd;
        }
        .friendlink .flink:hover {
            background: var(--primary-color);
            color: white;
        }
        footer {
            background-color: #1a1a1a;
            color: #ccc;
            padding: 40px 0 20px;
        }
        footer a {
            color: #ccc;
            text-decoration: none;
        }
        footer a:hover {
            color: var(--secondary-color);
        }
        .contact-info li {
            margin-bottom: 10px;
        }
        @media (max-width: 768px) {
            .hero-section h1 {
                font-size: 2.5rem;
            }
            .hero-section {
                padding: 100px 0;
            }
            .section-title {
                font-size: 1.8rem;
            }
        }