body {
            font-family: 'Microsoft YaHei', sans-serif;
            background-color: #f8f9fa;
            color: #333;
        }
        .navbar-brand {
            font-weight: bold;
            font-size: 1.8rem;
            color: #007bff;
        }
        .navbar-nav .nav-link {
            font-weight: 500;
            padding: 0.5rem 1rem;
            transition: color 0.3s;
        }
        .navbar-nav .nav-link:hover {
            color: #0056b3;
        }
        .hero-section {
            background: linear-gradient(135deg, #6a11cb 0%, #2575fc 100%);
            color: white;
            padding: 100px 0;
            text-align: center;
        }
        .hero-section h1 {
            font-size: 3.5rem;
            font-weight: bold;
            margin-bottom: 20px;
        }
        .hero-section p {
            font-size: 1.2rem;
            max-width: 700px;
            margin: 0 auto 30px;
        }
        .btn-primary {
            background-color: #ff6b6b;
            border: none;
            padding: 12px 30px;
            font-size: 1.1rem;
            border-radius: 50px;
            transition: background-color 0.3s, transform 0.3s;
        }
        .btn-primary:hover {
            background-color: #ff4757;
            transform: translateY(-5px);
        }
        .section-title {
            text-align: center;
            margin-bottom: 50px;
            font-size: 2.5rem;
            font-weight: bold;
            color: #2d3436;
        }
        .card {
            border: none;
            border-radius: 15px;
            overflow: hidden;
            box-shadow: 0 10px 30px rgba(0,0,0,0.1);
            transition: transform 0.3s, box-shadow 0.3s;
            margin-bottom: 30px;
        }
        .card:hover {
            transform: translateY(-10px);
            box-shadow: 0 15px 40px rgba(0,0,0,0.2);
        }
        .card-img-top {
            height: 200px;
            object-fit: cover;
        }
        .card-body {
            padding: 25px;
        }
        .card-title {
            font-size: 1.5rem;
            font-weight: bold;
            color: #007bff;
        }
        .service-icon {
            font-size: 3rem;
            color: #6a11cb;
            margin-bottom: 20px;
        }
        .about-img {
            border-radius: 15px;
            box-shadow: 0 10px 30px rgba(0,0,0,0.1);
        }
        footer {
            background-color: #2d3436;
            color: white;
            padding: 60px 0 20px;
        }
        footer a {
            color: #dfe6e9;
            text-decoration: none;
            transition: color 0.3s;
        }
        footer a:hover {
            color: #74b9ff;
        }
        .friendlink .flink {
            display: inline-block;
            padding: 8px 15px;
            margin: 5px;
            background-color: #007bff;
            color: white;
            border-radius: 5px;
            text-decoration: none;
            transition: background-color 0.3s;
        }
        .friendlink .flink:hover {
            background-color: #0056b3;
        }
        .contact-info i {
            font-size: 1.5rem;
            margin-right: 10px;
            color: #74b9ff;
        }
        @media (max-width: 768px) {
            .hero-section h1 {
                font-size: 2.5rem;
            }
            .hero-section p {
                font-size: 1rem;
            }
            .section-title {
                font-size: 2rem;
            }
        }