body {
    background: #f8f9fa;
}

/* 顶部横幅 */
.hero-section {
    height: 300px;
    background: url('https://images.pexels.com/photos/1640777/pexels-photo-1640777.jpeg?auto=compress&cs=tinysrgb&w=1920') center/cover;
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
    text-decoration: none;
}

.hero-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    display: flex;
    align-items: center;
    justify-content: center;
}

.hero-text {
    text-align: center;
    color: white;
}

.hero-text h1 {
    font-size: 48px;
    font-weight: bold;
    margin-bottom: 10px;
    text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.5);
}

.hero-text h2 {
    font-size: 24px;
    font-weight: normal;
    letter-spacing: 2px;
    text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.5);
}