body {
            font-family: 'Microsoft YaHei', sans-serif;
            background-color: #f8f9fa;
            color: #333;
        }
        .navbar {
            background: linear-gradient(135deg, #6a11cb 0%, #2575fc 100%);
            box-shadow: 0 4px 12px rgba(0,0,0,0.1);
        }
        .navbar-brand {
            font-weight: bold;
            font-size: 1.8rem;
            color: #fff !important;
        }
        .nav-link {
            color: #fff !important;
            font-weight: 500;
            transition: color 0.3s;
        }
        .nav-link:hover {
            color: #ffdd40 !important;
        }
        .hero-section {
            background: url('https://images.unsplash.com/photo-1544005313-94ddf0286df2?ixlib=rb-4.0.3&auto=format&fit=crop&w=1920&q=80') no-repeat center center/cover;
            height: 80vh;
            display: flex;
            align-items: center;
            justify-content: center;
            color: white;
            text-shadow: 2px 2px 10px rgba(0,0,0,0.7);
            position: relative;
        }
        .hero-overlay {
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background: rgba(0,0,0,0.5);
        }
        .hero-content {
            z-index: 2;
            max-width: 800px;
            padding: 20px;
        }
        .section-title {
            text-align: center;
            margin-bottom: 40px;
            color: #2c3e50;
            font-weight: bold;
            position: relative;
        }
        .section-title::after {
            content: '';
            display: block;
            width: 60px;
            height: 4px;
            background: #6a11cb;
            margin: 10px auto;
            border-radius: 2px;
        }
        .card {
            border: none;
            border-radius: 12px;
            overflow: hidden;
            transition: transform 0.3s, box-shadow 0.3s;
            box-shadow: 0 6px 15px rgba(0,0,0,0.08);
        }
        .card:hover {
            transform: translateY(-10px);
            box-shadow: 0 12px 20px rgba(0,0,0,0.15);
        }
        .card-img-top {
            height: 250px;
            object-fit: cover;
        }
        .btn-primary {
            background: linear-gradient(to right, #6a11cb, #2575fc);
            border: none;
            border-radius: 30px;
            padding: 10px 25px;
            font-weight: bold;
            transition: opacity 0.3s;
        }
        .btn-primary:hover {
            opacity: 0.9;
        }
        .footer {
            background: #2c3e50;
            color: #ecf0f1;
            padding: 40px 0 20px;
        }
        .friendlink a.flink {
            color: #3498db;
            text-decoration: none;
            padding: 8px 15px;
            border: 1px solid #3498db;
            border-radius: 5px;
            margin: 5px;
            display: inline-block;
            transition: background 0.3s, color 0.3s;
        }
        .friendlink a.flink:hover {
            background: #3498db;
            color: white;
        }
        .schema-data {
            display: none;
        }
        @media (max-width: 768px) {
            .hero-section {
                height: 60vh;
            }
            .hero-content h1 {
                font-size: 2rem;
            }
            .card-img-top {
                height: 200px;
            }
        }