/* 通用样式 */
body {
    font-family: 'Helvetica Neue', Arial, sans-serif;
    line-height: 1.6;
    margin: 0;
    padding: 0;
    color: #333;
    background-color: #f4f4f9;
}

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

footer {
    background-color: #333;
    color: #fff;
    padding: 10px 0;
    text-align: center;
    position: fixed;
    width:100%;
    bottom: 0;
}


header h1, footer p {
    margin: 0;
}

/* 导航栏样式 */
nav ul {
    list-style: none;
    padding: 0;
    display: inline-block;
}

nav ul li {
    display: inline;
    margin: 0 30px;
}

nav a {
    color: #fff;
    text-decoration: none;
    transition: color 0.3s ease;
}

nav a:hover {
    color: #ffd700; /* 悬停时变为金黄色 */
}

/* 主内容样式 */
main {
    padding: 50px;
    margin: 0 auto;
    max-width: 90%;
    background-color: #fff;
    box-shadow: 0 0 10px rgba(0, 0, 0, 0.1);
    border-radius: 8px;
    margin-top: 20px;
    margin-bottom: 20px;
}

/* 章节标题样式 */
h2 {
    color: #444;
    border-bottom: 2px solid #eaeaea;
    padding-bottom: 5px;
}

/* 表单样式 */
form label {
    display: block;
    margin-top: 15px;
}

form input, form textarea, form button {
    width: 100%;
    padding: 10px;
    margin-top: 5px;
    border-radius: 5px;
    border: 1px solid #ddd;
    font-size: 1rem;
}

form button {
    background-color: #333;
    color: #fff;
    border: none;
    cursor: pointer;
    transition: background-color 0.3s ease;
}

form button:hover {
    background-color: #555;
}

/* 笔记内容样式 */
#note-content {
    margin-top: 20px;
}

/* 响应式设计 */
@media (max-width: 768px) {
    nav ul {
        padding: 0;
    }

    nav ul li {
        display: block;
        margin: 10px 0;
    }

    main {
        margin-top: 10px;
        margin-bottom: 10px;
        border-radius: 5px;
    }
}