body {
    font-family: 'Microsoft YaHei', sans-serif;
    color: #333;
    line-height: 1.6;
}

.hero-section {
    background: linear-gradient(rgba(0, 0, 0, 0.5), rgba(0, 0, 0, 0.5)), 
                url('images/hero-bg.jpeg');
    background-size: cover;
    background-position: center;
    color: white;
    padding: 100px 0;
    margin-bottom: 30px;
}

.navbar {
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
}

.card {
    transition: transform 0.3s;
    box-shadow: 0 4px 6px rgba(0,0,0,0.1);
}

.card:hover {
    transform: translateY(-5px);
}

.card-img-top {
    height: 200px;
    object-fit: cover;
}

footer {
    margin-top: 50px;
}

/* 响应式调整 */
@media (max-width: 768px) {
    .hero-section {
        padding: 60px 0;
    }
    
    .card {
        margin-bottom: 20px;
    }
}