/* 页面标题区域 */
.page-header {
    background: linear-gradient(rgba(26, 95, 180, 0.8), rgba(26, 95, 180, 0.9)), url('https://images.unsplash.com/photo-1560472354-b33ff0c44a43?ixlib=rb-4.0.3&auto=format&fit=crop&w=1920&q=80') no-repeat center center;
    background-size: cover;
    padding: 120px 8% 80px;
    color: white;
    text-align: center;
}

.page-header h1 {
    font-size: 3rem;
    margin-bottom: 20px;
    text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.5);
}

.page-header p {
    font-size: 1.2rem;
    max-width: 800px;
    margin: 0 auto;
    line-height: 1.6;
    text-shadow: 1px 1px 2px rgba(0, 0, 0, 0.5);
}