body {
    font-family: Arial, sans-serif;
    margin: 0;
    padding: 0;
}

header {
    background-color: #333;
    color: #fff;
    padding: 10px 0;
}

nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0 20px;
}

.nav-links {
    list-style: none;
    display: flex;
}

.nav-links li {
    margin-left: 20px;
}

.nav-links a {
    color: #fff;
    text-decoration: none;
}

/* 响应式设计 */
@media (max-width: 1200px) {
    .nav-links {
        font-size: 0.9rem;
    }
    
    .nav-links li {
        margin-left: 1rem;
    }
}

@media (max-width: 992px) {
    .nav-links {
        display: none; /* 在较小屏幕上隐藏导航链接，可以添加一个移动菜单按钮 */
    }
    
    /* 这里可以添加移动导航菜单按钮样式 */
    
    .feedback-container {
        padding: 1.5rem;
    }
}

@media (max-width: 768px) {
    .nav-links {
        flex-direction: column;
        align-items: flex-start;
    }

    .nav-links li {
        margin: 10px 0;
    }

    .hero h1 {
        font-size: 24px;
    }

    .hero p {
        font-size: 16px;
    }

    .search-box {
        flex-direction: column;
    }

    .search-box input {
        margin-bottom: 10px;
    }

    .form-actions {
        flex-direction: column;
    }
    
    .btn-submit, .btn-reset {
        width: 100%;
    }
    
    .feedback-container h2 {
        font-size: 1.5rem;
    }
    
    input, select, textarea {
        padding: 0.7rem;
    }
}

@media (max-width: 576px) {
    main {
        margin: 1rem auto;
    }
    
    .feedback-container {
        padding: 1rem;
        border-radius: 0;
        box-shadow: none;
    }
    
    .contact-info {
        margin-top: 2rem;
        padding-top: 1.5rem;
    }
    
    .form-group {
        margin-bottom: 1rem;
    }
}