/* 基础样式优化 */
       body {
        background-color: var(--bg-color);
        color: var(--text-color);
        font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, 'Open Sans', 'Helvetica Neue', sans-serif;
        line-height: 1.6;
        overflow-x: hidden;
        padding: 0;
        margin: 0;
        height: 100vh;
    }
    
    .main-container {
        max-width: 100% !important;
        height: 100vh;
        padding: 0;
        margin: 0;
        display: flex;
        flex-direction: column;
        background-color: var(--bg-color);
        box-shadow: none;
        border-radius: 0;
        overflow: hidden;
    }
    
    .header {
        background-color: var(--container-bg);
        padding: 1rem 2rem;
        margin-bottom: 0;
        border-bottom: 1px solid var(--border-color);
        position: sticky;
        top: 0;
        z-index: 100;
        box-shadow: 0 2px 8px rgba(0, 0, 0, 0.05);
    }
    
    /* 文档容器布局 */
    .docs-container {
        display: flex;
        flex: 1;
        overflow: hidden;
        background-color: var(--bg-color);
        border-radius: 0;
        box-shadow: none;
    }
    
    /* 侧边栏样式 */
    .sidebar {
        width: 280px;
        background-color: var(--container-bg);
        border-right: 1px solid var(--border-color);
        overflow-y: auto;
        height: 100%;
        position: fixed;
        top: 72px;
        left: 0;
        bottom: 0;
        padding: 1rem 0.75rem;
        z-index: 50;
    }
    
    /* 简化的导航列表 */
    .sidebar-nav {
        list-style-type: none;
        padding: 0;
        margin: 0;
    }
    
    /* 移除额外间距，保持紧凑 */
    .sidebar-nav > li:not(:last-child) {
        margin-bottom: 0.05rem;
    }
    
    /* 文件项样式 */
    .sidebar-nav-item {
        margin-bottom: 0.05rem;
    }
    
    .sidebar-nav-item a {
        display: flex;
        align-items: center;
        padding: 0.35rem 0.5rem;
        border-radius: 4px;
        text-decoration: none;
        color: var(--text-color);
        font-weight: 400;
        font-size: 0.85rem;
        transition: background-color 0.15s ease;
    }
    
    .sidebar-nav-item a:hover {
        background-color: var(--hover-bg);
        text-decoration: none;
    }
    
    .sidebar-nav-item.active a {
        background-color: var(--primary-color-light);
        color: var(--primary-color);
        font-weight: 500;
    }
    
    /* 目录标题样式 */
    .header-item {
        display: flex;
        align-items: center;
        padding: 0.35rem 0rem;
        border-radius: 4px;
        cursor: pointer;
        color: var(--text-color);
        font-weight: 600;
        transition: background-color 0.15s ease;
    }
    
    .header-item:hover {
        background-color: var(--hover-bg);
    }
    
    .header-name {
        flex: 1;
        white-space: nowrap;
        overflow: hidden;
        text-overflow: ellipsis;
        font-size: 0.9rem;
    }
    
    /* 简化的图标切换 */
    .toggle-icon {
        transition: transform 0.2s ease;
        color: var(--text-color);
    }
    
    .header-item.open .toggle-icon {
        transform: rotate(90deg);
        color: var(--primary-color);
    }
    
    /* 子项容器 */
    .header-content {
        display: block;
        list-style-type: none;
        padding: 0;
        margin: 0;
    }
    
    .header-content.closed {
        display: none;
    }
    
    /* 多级标题样式 */
    .sidebar-nav-header {
        margin-bottom: 0.05rem;
    }
    
    /* 不同级别标题的样式 */
    .indent-level-1 > .header-item .header-name {
        font-size: 0.85rem;
        font-weight: 600;
    }
    
    .indent-level-2 > .header-item .header-name {
        font-size: 0.8rem;
        font-weight: 500;
    }
    
    .indent-level-3 > .header-item .header-name,
    .indent-level-4 > .header-item .header-name,
    .indent-level-5 > .header-item .header-name {
        font-size: 0.75rem;
        font-weight: 500;
        color: var(--text-secondary, #555);
    }
    
    /* 缩进级别 - 简化的缩进机制 */
    .indent-level-1 > .header-item,
    .indent-level-1 > a {
        padding-left: 1.5rem;
    }
    
    .indent-level-2 > .header-item,
    .indent-level-2 > a {
        padding-left: 2.25rem;
    }
    
    .indent-level-3 > .header-item,
    .indent-level-3 > a {
        padding-left: 3rem;
    }
    
    .indent-level-4 > .header-item,
    .indent-level-4 > a {
        padding-left: 3.75rem;
    }
    
    .indent-level-5 > .header-item,
    .indent-level-5 > a {
        padding-left: 4.5rem;
    }
    
    /* 缩进级别的文档项 */
    .indent-level-1 .material-icons-round,
    .indent-level-2 .material-icons-round,
    .indent-level-3 .material-icons-round,
    .indent-level-4 .material-icons-round,
    .indent-level-5 .material-icons-round {
        margin-left: 0 !important;
    }
    
    /* 多级目录下文件项样式 */
    .indent-level-1.sidebar-nav-item a,
    .indent-level-2.sidebar-nav-item a,
    .indent-level-3.sidebar-nav-item a,
    .indent-level-4.sidebar-nav-item a,
    .indent-level-5.sidebar-nav-item a {
        font-size: 0.8rem;
        /* color: var(--text-secondary, #626262); */
    }
    
    /* 活动项目的突出显示效果 - 简化版 */
    .sidebar-nav-item a.active {
        background-color: rgba(var(--primary-rgb, 0, 137, 255), 0.08);
        color: var(--primary-color);
        font-weight: 500;
        position: relative; /* 为伪元素定位 */
    }
    
    /* 使用伪元素代替边框，便于各种缩进级别调整 */
    .sidebar-nav-item a.active::before {
        content: "";
        position: absolute;
        left: 0;
        top: 0;
        bottom: 0;
        width: 3px;
        background-color: var(--primary-color);
        border-radius: 0 2px 2px 0;
    }
    
    /* 不同级别的缩进项活动状态 */
    .indent-level-1.sidebar-nav-item a.active,
    .indent-level-2.sidebar-nav-item a.active,
    .indent-level-3.sidebar-nav-item a.active,
    .indent-level-4.sidebar-nav-item a.active,
    .indent-level-5.sidebar-nav-item a.active {
        color: var(--primary-color);
        font-weight: 500;
    }
    
    /* 针对移动设备的兼容性 */
    @media (max-width: 768px) {
        .sidebar-nav-item a.active::before {
            width: 4px; /* 在移动端略微增大指示器宽度，增加可见性 */
        }
    }
    
    /* 侧边栏搜索框 */
    .sidebar-search {
        margin-bottom: 1rem;
        position: relative;
    }
    
    .sidebar-search .form-control {
        border-radius: 8px;
        font-size: 0.85rem;
        padding: 0.5rem 0.75rem 0.5rem 2.5rem;
        background-color: var(--bg-color);
        border: 1px solid var(--border-color);
        transition: all 0.2s ease;
        box-shadow: none;
    }
    
    .sidebar-search .form-control:focus {
        border-color: var(--primary-color);
        box-shadow: 0 0 0 3px rgba(var(--primary-rgb, 0, 120, 250), 0.1);
    }
    
    .sidebar-search::before {
        content: "search";
        font-family: 'Material Icons Round';
        position: absolute;
        left: 0.8rem;
        top: 50%;
        transform: translateY(-50%);
        font-size: 1.2rem;
        color: var(--text-secondary);
        opacity: 0.7;
        pointer-events: none;
    }
    
    /* 目录标题统一样式 */
    .sidebar-title {
        font-size: 0.8rem;
        text-transform: uppercase;
        letter-spacing: 0.05em;
        color: var(--text-secondary);
        margin-bottom: 0.75rem;
        font-weight: 500;
    }
    
    /* 简洁的文档文件图标 */
    .doc-icon {
        font-size: 1rem;
        color: var(--text-secondary);
        margin-right: 0.5rem;
        opacity: 0.7;
    }
    
    /* 内容区域样式 */
    .content {
        flex: 1;
        padding: 2rem 2.5rem;
        background-color: var(--container-bg);
        overflow-y: auto;
        margin-left: 280px;
        min-height: calc(100vh - 72px);
        position: relative;
    }
    
    .content-inner {
        max-width: 900px;
        margin: 0 auto;
    }
    
    .doc-title {
        font-weight: 600;
        margin-bottom: 1.5rem;
        padding-bottom: 0.8rem;
        border-bottom: 1px solid var(--border-color);
        color: var(--text-color);
    }
    
    /* 表格容器 */
    .table-container {
        overflow-x: auto;
        margin-bottom: 1.5rem;
        border-radius: 6px;
        border: 1px solid var(--border-color);
    }
    
    /* 返回顶部按钮 */
    .back-to-top {
        position: fixed;
        bottom: 30px;
        right: 30px;
        width: 45px;
        height: 45px;
        border-radius: 50%;
        background-color: var(--primary-color);
        color: white;
        display: flex;
        align-items: center;
        justify-content: center;
        cursor: pointer;
        box-shadow: 0 3px 12px rgba(0, 0, 0, 0.15);
        opacity: 0;
        visibility: hidden;
        transition: all 0.3s ease;
        z-index: 1000;
    }
    
    .back-to-top.visible {
        opacity: 1;
        visibility: visible;
    }
    
    .back-to-top:hover {
        transform: translateY(-5px);
        box-shadow: 0 5px 15px rgba(0, 0, 0, 0.2);
        background-color: var(--text-primary);
    }
    
    /* Markdown 内容样式优化 */
    .markdown-content {
        max-width: 100%;
        word-wrap: break-word;
    }
    
    .markdown-content h1 {
        font-size: 2.25rem;
        margin-bottom: 1.5rem;
        padding-bottom: 0.75rem;
        border-bottom: 1px solid var(--border-color);
        color: var(--text-color);
        font-weight: 600;
    }
    
    .markdown-content h2 {
        font-size: 1.75rem;
        margin-top: 2rem;
        margin-bottom: 1rem;
        padding-bottom: 0.5rem;
        color: var(--text-color);
        font-weight: 600;
    }
    
    .markdown-content h3 {
        font-size: 1.4rem;
        margin-top: 1.75rem;
        margin-bottom: 0.8rem;
        color: var(--text-color);
        font-weight: 600;
    }
    
    .markdown-content h4 {
        font-size: 1.2rem;
        margin-top: 1.5rem;
        margin-bottom: 0.6rem;
        color: var(--text-color);
        font-weight: 600;
    }
    
    .markdown-content p {
        margin-bottom: 1.2rem;
        line-height: 1.8;
    }
    
    .markdown-content ul, 
    .markdown-content ol {
        margin-bottom: 1.2rem;
        padding-left: 1.75rem;
    }
    
    .markdown-content li {
        margin-bottom: 0.5rem;
        line-height: 1.7;
    }
    
    .markdown-content code {
        padding: 0.2rem 0.4rem;
        background-color: var(--hover-bg);
        border-radius: 4px;
        font-family: 'SFMono-Regular', Consolas, 'Liberation Mono', Menlo, monospace;
        font-size: 0.875rem;
        word-break: break-word;
    }
    
    .markdown-content mark {
        background-color: rgba(255, 240, 0, 0.3);
        padding: 0.1em 0.2em;
        border-radius: 3px;
        color: inherit;
        box-shadow: 0 1px 2px rgba(0, 0, 0, 0.05);
        font-weight: 500;
    }
    
    [data-theme="dark"] .markdown-content mark {
        background-color: rgba(255, 240, 0, 0.2);
        box-shadow: 0 1px 3px rgba(0, 0, 0, 0.2);
    }
    
    /* 代码块样式增强 */
    .markdown-content pre {
        position: relative;
        padding: 1.2rem;
        background-color: var(--hover-bg);
        border-radius: 8px;
        overflow-x: auto;
        margin-bottom: 1.5rem;
        border: 1px solid var(--border-color);
    }
    
    .markdown-content pre code {
        padding: 0;
        padding-top: 0.5rem;
        background-color: transparent;
        border: none;
        font-size: 0.9rem;
        line-height: 1.5;
        display: block;
    }
    
    /* 代码语言标签 */
    .code-language {
        position: absolute;
        top: 0;
        left: 0;
        padding: 3px 10px;
        font-size: 0.7rem;
        color: var(--text-secondary);
        background-color: rgba(0, 0, 0, 0.05);
        border-radius: 8px 0 8px 0;
        font-family: 'SFMono-Regular', Consolas, 'Liberation Mono', Menlo, monospace;
        font-weight: 500;
    }
    
    [data-theme="dark"] .code-language {
        background-color: rgba(255, 255, 255, 0.05);
    }
    
    /* 复制按钮 */
    .copy-button {
        position: absolute;
        top: 2px;
        right: 2px;
        width: 30px;
        height: 30px;
        background-color: var(--bg-color);
        border: 1px solid var(--border-color);
        border-radius: 4px;
        display: flex;
        align-items: center;
        justify-content: center;
        cursor: pointer;
        opacity: 0;
        transition: opacity 0.2s ease, background-color 0.2s ease;
    }
    
    .copy-button .material-icons-round {
        font-size: 0.9rem;
        color: var(--text-secondary);
    }
    
    .markdown-content pre:hover .copy-button {
        opacity: 1;
    }
    
    .copy-button:hover {
        background-color: var(--hover-bg);
    }
    
    .copy-button.copied {
        background-color: var(--primary-color-light);
    }
    
    .copy-button.copied .material-icons-round {
        color: var(--primary-color);
    }
    
    .markdown-content a {
        color: var(--text-primary);
        text-decoration: none;
        border-bottom: 1px dashed var(--text-primary);
        padding-bottom: 1px;
        transition: all 0.2s ease;
    }
    
    .markdown-content a:hover {
        text-decoration: none;
        border-bottom: 1px solid var(--text-primary);
        color: var(--primary-color);
    }
    
    .markdown-content blockquote {
        border-left: 4px solid var(--primary-color);
        padding: 1rem 1.5rem;
        margin: 1.5rem 0;
        background-color: var(--hover-bg);
        border-radius: 0 8px 8px 0;
    }
    
    .markdown-content blockquote p {
        margin-bottom: 0.5rem;
        font-style: italic;
    }
    
    .markdown-content blockquote p:last-child {
        margin-bottom: 0;
    }
    
    .markdown-content table {
        width: 100%;
        border-collapse: collapse;
        border-radius: 6px;
        overflow: hidden;
        border: 1px solid var(--border-color);
    }
    
    .markdown-content table th, 
    .markdown-content table td {
        border: 1px solid var(--border-color);
        padding: 0.75rem 1rem;
        text-align: left;
    }
    
    .markdown-content table th {
        background-color: var(--hover-bg);
        font-weight: 600;
        white-space: nowrap;
    }
    
    .markdown-content table tr:nth-child(even) {
        background-color: var(--bg-color);
    }
    
    .markdown-content img {
        max-width: 100%;
        height: auto;
        border-radius: 8px;
        margin: 1.5rem 0;
        display: block;
    }
    
    /* 文档导航 */
    .doc-nav {
        display: flex;
        justify-content: space-between;
        margin-top: 3rem;
        padding-top: 1.5rem;
        border-top: 1px solid var(--border-color);
    }
    
    .doc-nav-btn {
        display: inline-flex;
        align-items: center;
        gap: 0.5rem;
        padding: 0.75rem 1.25rem;
        border-radius: 6px;
        color: var(--text-primary);
        background-color: var(--bg-color);
        border: 1px solid var(--border-color);
        text-decoration: none;
        transition: all 0.2s ease;
    }
    
    .doc-nav-btn:hover {
        background-color: var(--primary-color-light);
        transform: translateY(-2px);
    }
    
    .doc-nav-btn .doc-nav-label {
        font-size: 0.8rem;
        opacity: 0.8;
        display: block;
    }
    
    .doc-nav-btn .doc-nav-title {
        font-weight: 500;
    }
    
    /* 响应式布局调整 */
    @media (max-width: 992px) {
        .header {
            padding: 1rem;
        }
        
        .sidebar {
            width: 250px;
        }
        
        .content {
            margin-left: 250px;
            padding: 1.5rem;
        }
    }
    
    @media (max-width: 768px) {
        .main-container {
            height: auto;
        }
        
        .docs-container {
            flex-direction: column;
        }
        
        .sidebar {
            position: static;
            width: 100%;
            max-height: none;
            border-right: none;
            border-bottom: 1px solid var(--border-color);
            padding: 1rem;
        }
        
        .content {
            margin-left: 0;
            padding: 1.5rem 1rem;
            min-height: 0;
        }
        
        /* 移动端目录调整 */
        .sidebar-nav {
            display: block;
        }
        
        .sidebar-nav-header {
            margin-bottom: 0.2rem;
        }
        
        .header-item {
            padding: 0.35rem 0.6rem;
        }
        
        .sidebar-nav-item {
            margin-bottom: 0;
        }
        
        .sidebar-nav-item a {
            padding: 0.35rem 0.6rem;
            font-size: 0.8rem;
        }
        
        .sidebar-nav-item.active a::before {
            display: none;
        }
        
        .markdown-content h1 {
            font-size: 1.8rem;
        }
        
        .markdown-content h2 {
            font-size: 1.5rem;
        }
        
        .markdown-content h3 {
            font-size: 1.25rem;
        }
        
        .doc-nav {
            flex-direction: column;
            gap: 1rem;
        }
    }
    
    /* 打印样式 */
    @media print {
        .sidebar, 
        .back-to-top,
        .header,
        .doc-nav {
            display: none;
        }
        
        .content {
            margin-left: 0;
            padding: 0;
            overflow: visible;
        }
        
        .docs-container {
            display: block;
            box-shadow: none;
        }
        
        .main-container {
            box-shadow: none;
            max-width: 100% !important;
            padding: 0;
        }
    }

    /* 搜索框样式 */
    .search-container {
        margin-bottom: 1.5rem;
        position: relative;
    }
    
    .search-input {
        width: 100%;
        padding: 0.75rem 1rem 0.75rem 2.5rem;
        border-radius: 8px;
        border: 1px solid var(--border-color);
        background-color: var(--bg-color);
        color: var(--text-color);
        transition: all 0.2s ease;
        font-size: 0.95rem;
    }
    
    .search-input:focus {
        outline: none;
        border-color: var(--primary-color);
        box-shadow: 0 0 0 3px var(--primary-color-light);
    }
    
    .search-icon {
        position: absolute;
        left: 0.75rem;
        top: 50%;
        transform: translateY(-50%);
        color: var(--text-color);
        opacity: 0.5;
        pointer-events: none;
    }

    /* 亮色/暗色主题切换按钮 */
    .theme-btn {
        padding: 0.5rem;
        width: 40px;
        height: 40px;
        border-radius: 50%;
        display: flex;
        align-items: center;
        justify-content: center;
        cursor: pointer;
        background-color: var(--bg-color);
        border: 1px solid var(--border-color);
        color: var(--text-color);
        transition: all 0.3s ease;
    }
    
    .theme-btn:hover {
        background-color: var(--hover-bg);
        transform: rotate(30deg);
    }
    
    /* 面包屑导航样式 */
    .breadcrumb {
        margin: 0;
        padding: 0;
        background-color: transparent;
        font-size: 0.85rem;
    }
    
    .breadcrumb-item + .breadcrumb-item::before {
        content: "/";
        color: var(--text-secondary);
    }
    
    .breadcrumb-item a {
        color: var(--text-secondary);
        text-decoration: none;
    }
    
    .breadcrumb-item a:hover {
        color: var(--primary-color);
        text-decoration: underline;
    }
    
    .breadcrumb-item.active {
        color: var(--text-color);
        font-weight: 500;
    }