body {
            font-family: 'Microsoft YaHei', sans-serif;
            color: #333;
            background-color: #f8f9fa;
        }
        .navbar-brand {
            font-weight: bold;
            font-size: 1.8rem;
            color: #8b0000;
        }
        .hero-section {
            background: linear-gradient(rgba(0, 0, 0, 0.7), rgba(0, 0, 0, 0.7)), url('https://images.unsplash.com/photo-1510812431401-41d2bd2722f3?ixlib=rb-4.0.3&auto=format&fit=crop&w=1920&q=80') no-repeat center center/cover;
            color: white;
            padding: 150px 0;
            text-align: center;
        }
        .hero-section h1 {
            font-size: 3.5rem;
            margin-bottom: 20px;
        }
        .section-title {
            text-align: center;
            margin-bottom: 50px;
            color: #8b0000;
            font-size: 2.5rem;
            font-weight: bold;
        }
        .card {
            border: none;
            border-radius: 15px;
            overflow: hidden;
            transition: transform 0.3s ease, box-shadow 0.3s ease;
        }
        .card:hover {
            transform: translateY(-10px);
            box-shadow: 0 15px 30px rgba(0, 0, 0, 0.1);
        }
        .card-img-top {
            height: 250px;
            object-fit: cover;
        }
        .btn-primary {
            background-color: #8b0000;
            border-color: #8b0000;
            padding: 12px 30px;
            border-radius: 30px;
            font-weight: bold;
            transition: background-color 0.3s ease, transform 0.3s ease;
        }
        .btn-primary:hover {
            background-color: #660000;
            border-color: #660000;
            transform: scale(1.05);
        }
        .friendlink {
            background-color: #fff;
            padding: 60px 0;
            border-top: 1px solid #eee;
        }
        .flink {
            display: inline-block;
            margin: 10px 15px;
            padding: 10px 20px;
            background-color: #f8f9fa;
            border-radius: 10px;
            color: #333;
            text-decoration: none;
            transition: background-color 0.3s ease, color 0.3s ease;
        }
        .flink:hover {
            background-color: #8b0000;
            color: white;
        }
        footer {
            background-color: #222;
            color: #ccc;
            padding: 40px 0;
        }
        footer a {
            color: #ccc;
            text-decoration: none;
            transition: color 0.3s ease;
        }
        footer a:hover {
            color: #fff;
        }
        .social-icons a {
            font-size: 1.5rem;
            margin: 0 10px;
        }
        .contact-info i {
            color: #8b0000;
            margin-right: 10px;
        }
        @media (max-width: 768px) {
            .hero-section h1 {
                font-size: 2.5rem;
            }
            .section-title {
                font-size: 2rem;
            }
            .card-img-top {
                height: 200px;
            }
        }