:root {
            --primary-color: #1a56db;
            --secondary-color: #0ea5e9;
            --accent-color: #10b981;
            --dark-color: #111827;
            --light-color: #f9fafb;
        }
        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 2px 10px rgba(0, 0, 0, 0.1);
        }
        .hero {
            background: linear-gradient(135deg, var(--primary-color) 0%, var(--secondary-color) 100%);
            color: white;
            padding: 120px 0;
        }
        .section-title {
            color: var(--dark-color);
            border-left: 5px solid var(--accent-color);
            padding-left: 15px;
            margin-bottom: 40px;
        }
        .service-card, .product-card, .case-card, .team-card {
            border: none;
            border-radius: 15px;
            overflow: hidden;
            transition: transform 0.3s ease, box-shadow 0.3s ease;
            height: 100%;
        }
        .service-card:hover, .product-card:hover, .case-card:hover, .team-card:hover {
            transform: translateY(-10px);
            box-shadow: 0 15px 30px rgba(0, 0, 0, 0.15);
        }
        .btn-primary {
            background-color: var(--primary-color);
            border-color: var(--primary-color);
            padding: 10px 25px;
            border-radius: 30px;
            transition: all 0.3s;
        }
        .btn-primary:hover {
            background-color: var(--secondary-color);
            border-color: var(--secondary-color);
            transform: scale(1.05);
        }
        .footer {
            background-color: var(--dark-color);
            color: var(--light-color);
        }
        .friendlink .flink {
            color: var(--secondary-color);
            text-decoration: none;
            padding: 8px 15px;
            border-radius: 5px;
            transition: background-color 0.3s;
        }
        .friendlink .flink:hover {
            background-color: rgba(14, 165, 233, 0.1);
        }
        .contact-form .form-control {
            border-radius: 10px;
            border: 1px solid #ddd;
            padding: 12px;
        }
        .contact-form .form-control:focus {
            border-color: var(--primary-color);
            box-shadow: 0 0 0 0.2rem rgba(26, 86, 219, 0.25);
        }
        .news-item {
            border-bottom: 1px solid #eee;
            padding-bottom: 20px;
            margin-bottom: 20px;
        }
        .news-item:last-child {
            border-bottom: none;
        }
        @media (max-width: 768px) {
            .hero {
                padding: 80px 0;
            }
            .section-title {
                font-size: 1.5rem;
            }
        }