<style type="text/css">
/* === 强制全局使用华文中宋 === */
body { font-family: "华文中宋", "STZhongsong", serif !important; }
#cnblogs_post_body { font-family: "华文中宋", "STZhongsong", serif !important; }
#cnblogs_post_body h1 { font-family: "华文中宋", "STZhongsong", serif !important; }
#cnblogs_post_body h2 { font-family: "华文中宋", "STZhongsong", serif !important; }
#cnblogs_post_body h3 { font-family: "华文中宋", "STZhongsong", serif !important; }
#cnblogs_post_body h4 { font-family: "华文中宋", "STZhongsong", serif !important; }
#cnblogs_post_body h5 { font-family: "华文中宋", "STZhongsong", serif !important; }
#cnblogs_post_body h6 { font-family: "华文中宋", "STZhongsong", serif !important; }
#cnblogs_post_body p { font-family: "华文中宋", "STZhongsong", serif !important; }
#cnblogs_post_body li { font-family: "华文中宋", "STZhongsong", serif !important; }
#cnblogs_post_body a { font-family: "华文中宋", "STZhongsong", serif !important; }
#navCategory { font-family: "华文中宋", "STZhongsong", serif !important; }
#blog-sidecolumn { font-family: "华文中宋", "STZhongsong", serif !important; }
#cnblogs_post_body table { font-family: "华文中宋", "STZhongsong", serif !important; }
#cnblogs_post_body code { font-family: "华文中宋", "STZhongsong", serif !important; }

/* === 基础样式优化 === */
#cnblogs_post_body {
    color: #333;
    font-size: 17px;
    line-height: 1.9;
    letter-spacing: 0.05em;
    text-align: justify;
    padding: 2em;
    background: #FFFDF8;
    border: 1px solid #E8E3D7;
    box-shadow: 0 2px 15px rgba(0,0,0,0.05);
    margin: 20px auto;
    max-width: 900px;
}

/* === 标题样式 === */
#cnblogs_post_body h1 {
    color: #5D2E1A;
    font-size: 24px;
    padding-bottom: 12px;
    border-bottom: 2px solid #E8D5C0;
    margin: 30px 0 20px;
}

#cnblogs_post_body h2 {
    background: linear-gradient(to right, #8C4A2B, #A05A3C);
    color: #FFF9F0;
    font-size: 22px;
    font-weight: 600;
    padding: 12px 25px;
    margin: 2.5em 0 1.2em;
    border-left: 6px solid #5D2E1A;
    border-radius: 0 30px 30px 0;
    box-shadow: 3px 3px 8px rgba(0,0,0,0.1);
    text-shadow: 1px 1px 2px rgba(0,0,0,0.3);
}

#cnblogs_post_body h3 {
    color: #5D2E1A;
    font-size: 19px;
    font-weight: 550;
    padding: 8px 20px;
    margin: 2em 0 1em;
    border-bottom: 2px solid #E8D5C0;
}

/* === 链接样式 === */
#cnblogs_post_body a {
    color: #8C4A2B;
    text-decoration: none;
    transition: all 0.4s cubic-bezier(0.25, 0.8, 0.25, 1);
    border-bottom: 1px dashed #C9B29A;
    padding-bottom: 1px;
}

#cnblogs_post_body a:hover {
    color: #B37250;
    border-bottom: 1px solid #8C4A2B;
    transform: translateX(3px);
}

/* === 目录导航 === */
#navCategory {
    background: #FFF9F0;
    border: 1px solid #E8D5C0;
    border-radius: 3px;
    padding: 25px;
    margin: 0 0 2em;
    box-shadow: 0 3px 10px rgba(0,0,0,0.05);
}

#navCategory h1 {
    color: #5D2E1A;
    font-size: 20px;
    text-align: center;
    padding-bottom: 12px;
    border-bottom: 1px solid #E8D5C0;
    margin-bottom: 15px;
    letter-spacing: 0.2em;
}

#navCategory ol {
    padding-left: 1.5em;
}

#navCategory li {
    margin-bottom: 0.8em;
    position: relative;
    transition: all 0.3s ease;
}

#navCategory li:hover {
    transform: translateX(5px);
}

/* === 代码块样式 === */
pre {
    background: #2D2D2D !important;
    color: #F8F8F2 !important;
    padding: 15px !important;
    border-radius: 5px !important;
    overflow-x: auto;
    position: relative;
}

/* === 表格样式 === */
#cnblogs_post_body table {
    border-collapse: collapse;
    width: 100%;
    margin: 20px 0;
    box-shadow: 0 1px 3px rgba(0,0,0,0.1);
}

#cnblogs_post_body table th {
    background: #8C4A2B;
    color: white;
    padding: 12px;
    text-align: left;
}

#cnblogs_post_body table td {
    padding: 10px 12px;
    border-bottom: 1px solid #E8D5C0;
}

#cnblogs_post_body table tr:hover td {
    background: #FFF9F0;
}

/* === 新增功能1：阅读进度条 === */
#reading-progress {
    position: fixed;
    top: 0;
    left: 0;
    height: 3px;
    background: #8C4A2B;
    z-index: 9999;
    width: 0%;
}

/* === 新增功能2：暗黑模式切换按钮 === */
#dark-mode-toggle {
    position: fixed;
    bottom: 20px;
    right: 20px;
    background: #8C4A2B;
    color: white;
    border: none;
    border-radius: 50%;
    width: 40px;
    height: 40px;
    font-size: 18px;
    cursor: pointer;
    z-index: 999;
    box-shadow: 0 2px 5px rgba(0,0,0,0.2);
}

/* === 新增功能3：代码块复制按钮 === */
.copy-code-btn {
    position: absolute;
    top: 5px;
    right: 5px;
    background: #8C4A2B;
    color: white;
    border: none;
    border-radius: 3px;
    padding: 2px 8px;
    font-size: 12px;
    cursor: pointer;
    opacity: 0;
    transition: opacity 0.3s;
}

pre:hover .copy-code-btn {
    opacity: 1;
}

/* === 新增功能4：段落悬停高亮 === */
#cnblogs_post_body p:hover {
    background: rgba(140, 74, 43, 0.05);
    transition: background 0.3s;
}

/* === 新增功能5：脚注样式 === */
.footnote {
    font-size: 0.8em;
    color: #666;
    border-top: 1px dashed #E8D5C0;
    margin-top: 20px;
    padding-top: 10px;
}

/* === 新增功能6：图片悬浮效果 === */
#cnblogs_post_body img {
    transition: transform 0.3s;
    max-width: 100%;
    border-radius: 3px;
    box-shadow: 0 2px 8px rgba(0,0,0,0.1);
}

#cnblogs_post_body img:hover {
    transform: scale(1.02);
    box-shadow: 0 5px 15px rgba(0,0,0,0.2);
}

/* === 新增功能7：引用块样式 === */
#cnblogs_post_body blockquote {
    background: #FFF9F0;
    border-left: 4px solid #8C4A2B;
    margin: 20px 0;
    padding: 15px 20px;
    font-style: italic;
    color: #555;
}

/* === 暗黑模式样式 === */
.dark-mode {
    background-color: #222;
    color: #eee;
}

.dark-mode #cnblogs_post_body {
    background-color: #333;
    color: #eee;
    border-color: #444;
}

.dark-mode #cnblogs_post_body h1,
.dark-mode #cnblogs_post_body h2,
.dark-mode #cnblogs_post_body h3 {
    color: #F5DEB3;
}

.dark-mode #cnblogs_post_body a {
    color: #D2B48C;
}

.dark-mode #navCategory,
.dark-mode #cnblogs_post_body blockquote {
    background: #444;
    border-color: #555;
}

.dark-mode pre {
    background: #1A1A1A !important;
}

.dark-mode #cnblogs_post_body table th {
    background: #5D2E1A;
}

.dark-mode #cnblogs_post_body table tr:hover td {
    background: #444;
}
</style>

<script>
// === 阅读进度条功能 ===
window.addEventListener('scroll', function() {
    const winScroll = document.body.scrollTop || document.documentElement.scrollTop;
    const height = document.documentElement.scrollHeight - document.documentElement.clientHeight;
    const scrolled = (winScroll / height) * 100;
    document.getElementById('reading-progress').style.width = scrolled + '%';
});

// === 暗黑模式切换功能 ===
document.getElementById('dark-mode-toggle').addEventListener('click', function() {
    document.body.classList.toggle('dark-mode');
    if (document.body.classList.contains('dark-mode')) {
        localStorage.setItem('darkMode', 'enabled');
        document.getElementById('dark-mode-toggle').textContent = '☀️';
    } else {
        localStorage.setItem('darkMode', 'disabled');
        document.getElementById('dark-mode-toggle').textContent = '🌙';
    }
});

// 检测用户偏好
if (localStorage.getItem('darkMode') === 'enabled') {
    document.body.classList.add('dark-mode');
    document.getElementById('dark-mode-toggle').textContent = '☀️';
} else {
    document.getElementById('dark-mode-toggle').textContent = '🌙';
}

// === 代码块复制功能 ===
document.querySelectorAll('pre').forEach(function(pre) {
    const btn = document.createElement('button');
    btn.className = 'copy-code-btn';
    btn.textContent = '复制';
    btn.addEventListener('click', function() {
        const code = pre.querySelector('code') || pre;
        navigator.clipboard.writeText(code.textContent);
        btn.textContent = '已复制!';
        setTimeout(() => btn.textContent = '复制', 2000);
    });
    pre.appendChild(btn);
});

// === 返回顶部按钮 ===
window.addEventListener('scroll', function() {
    var backToTop = document.getElementById('back-to-top');
    backToTop.style.display = (window.pageYOffset > 300) ? 'block' : 'none';
});

document.getElementById('back-to-top').addEventListener('click', function() {
    window.scrollTo({top: 0, behavior: 'smooth'});
});
</script>

<!-- === 功能元素 === -->
<div id="reading-progress"></div>
<button id="dark-mode-toggle">🌙</button>
<div id="back-to-top" style="display:none;position:fixed;bottom:70px;right:20px;background:#8C4A2B;color:white;width:40px;height:40px;text-align:center;line-height:40px;border-radius:50%;cursor:pointer;box-shadow:0 2px 5px rgba(0,0,0,0.2);">↑</div>