/* ======== 全局基础样式 ======== */
body {
    font-family: 'Open Sans', sans-serif;
    line-height: 1.4;
    font-size: 18px;
    background-color: #f0f2f5;
    color: #333;
    margin: 0;
    padding: 0;
}

h1, h2, h3, h4, h5, h6 {
    font-family: 'Merriweather', serif;
    color: #444;
    margin-top: 1.2em;
    margin-bottom: 0.6em;
}

p {
    margin: 0.9em 0;
}

a {
    color: #1d72b8; /* 统一链接颜色 */
    text-decoration: none;
}

a:hover {
    text-decoration: underline;
}

/* ======== 顶部导航条 ======== */
.navbar {
    background-color: #ffffff;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
    padding-top: 0.5rem;
    padding-bottom: 0.5rem;
    min-height: 50px;
}

.navbar-brand {
    font-weight: bold;
    color: #1d72b8;
    font-size: 1.1rem;
}

.navbar-nav .nav-link {
    color: #555555;
    margin-right: 15px;
    font-size: 0.95rem;
}

.navbar-nav .nav-link.active,
.navbar-nav .nav-link:hover {
    color: #1d72b8;
}

/* ======== 页面主体容器（含侧边栏 + 文章 + TOC） ======== */
.page-container {
    display: flex;
    justify-content: flex-start;
    align-items: flex-start;
    max-width: 1200px;
    margin: 0 auto;
    padding-top: 60px;
    padding-bottom: 60px;
}

/* ======== 左侧侧边栏 ======== */
.sidebar {
    width: 260px;
    flex-shrink: 0;
    background-color: transparent;
    border: none;
    position: sticky;
    top: 60px;
    height: calc(100vh - 60px);
    overflow-y: auto;
    margin: 0;
    padding: 20px;
}

.sidebar h3 {
    font-size: 1.4rem;
    margin-top: 0;
    color: #1d72b8;
}

.folder-name {
    display: flex;
    align-items: center;
    cursor: pointer;
    font-weight: bold;
    margin: 10px 0;
    color: #1d72b8;
    user-select: none; /* 避免双击选中文字 */
}

.folder-icon {
    margin-right: 6px;
    font-size: 18px;
    color: #666; /* 可自行修改颜色 */
}

/* 箭头在最右侧 */
.arrow-icon {
    margin-left: auto;
    font-size: 18px;
    color: #999;
}

.nested {
    display: none; /* 默认折叠 */
    margin-left: 20px; /* 缩进，让分组内文章更有层次 */
    border-left: 1px dashed #ccc; /* 可选：左侧虚线以示层级 */
    padding-left: 10px; /* 让文字不紧贴虚线 */
    margin-top: 5px; /* 与分组标题略做间距 */
}

.nested.show {
    display: block; /* 展开 */
}

/* 新增：更深层级的子目录也重复使用类似的样式，以增强分层效果 */
.nested .nested {
    margin-left: 20px;
    border-left: 1px dashed #ccc;
    padding-left: 10px;
    margin-top: 5px;
}

/* 如果还有更深层级，依次类推 */
.nested .nested .nested {
    margin-left: 20px;
    border-left: 1px dashed #ccc;
    padding-left: 10px;
    margin-top: 5px;
}

/* ★ 新增：统一 nested 中每一项在虚线右侧的缩进
   这样专栏1下面的 Test / example / 第一章… 的缩进
   会和内部 Variable / dagang 等子项保持一致 */
.sidebar .nested li {
    margin-left: 19px;
}

.sidebar ul {
    list-style-type: none;
    padding-left: 0;
    margin: 0;
}

.sidebar li {
    margin: 6px 0;
}

.sidebar a {
    color: #555555;
    text-decoration: none;
}

.sidebar a:hover {
    text-decoration: underline;
    color: #1d72b8;
}

/* 高亮当前文件 */
.active-file {
    font-weight: bold;
    color: #1d72b8;
    text-decoration: underline;
}

/* ======== 中间内容区（文章 + TOC） ======== */
.content {
    flex: 1;
    padding: 0;
    margin: 0;
    gap: 0;
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
}

.main-article {
    background-color: transparent;
    box-shadow: 0 2px 5px rgba(0, 0, 0, 0.1);
    border-radius: 8px;
    width: 800px !important;
    max-width: 800px !important;
    min-width: 800px !important;
    margin-right: 0 !important;
    padding: 24px;
    flex: 0 0 auto !important;
}

/* ======== 元信息区域 ======== */
.meta-info {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    margin-bottom: 20px;
    padding: 16px;
    border-radius: 8px;
    background-color: transparent;
    border: none;
}

.meta-info h1 {
    flex-basis: 100%;
    margin-top: 0;
    margin-bottom: 0.3em;
    font-size: 2rem;
    color: #000;
}

.meta-item {
    display: flex;
    align-items: center;
    margin-right: 20px;
    margin-bottom: 8px;
    font-size: 0.95rem;
    color: #555555;
}

.meta-item:last-child {
    margin-right: 0;
}

.meta-label {
    display: inline-flex;
    align-items: center;
    font-weight: bold;
    margin-right: 0.4em;
    color: #333333;
}

.meta-label i {
    margin-right: 4px;
}

.meta-value {
    display: inline-block;
    color: #555555;
}

.meta-tags span,
.meta-categories span {
    display: inline-block;
    background: #e0f2fe;
    color: #0369a1;
    border-radius: 4px;
    padding: 2px 6px;
    margin-right: 4px;
    font-size: 0.85rem;
}

/* ======== 文章内容中的代码块样式等 ======== */
button.run-button, button.reset-button, button.fullscreen-button {
    background-color: #1d72b8;
    color: white;
    border: none;
    border-radius: 4px;
    padding: 8px 16px;
    cursor: pointer;
    margin-left: 10px;
}

button.run-button:hover, button.reset-button:hover,
button.fullscreen-button:hover {
    background-color: #155a8a;
}

.CodeMirror-scroll,
.cm-scroller {
    overflow: auto;
}

.CodeMirror-selected,
.cm-selectionBackground {
    background: #3399ff !important;
}

.main-article img {
    max-width: 100%;
    height: auto;
    display: block;
    margin: 10px auto;
    cursor: pointer; /* 图片可点击 */
}

/* 新增：图片 ALT 样式（若有文字则在图片下方灰色小字显示） */
.alt-caption {
    text-align: center;
    color: #888;
    font-size: 14px;
    margin-top: 4px;
    margin-bottom: 1em;
}

/* ======== TOC（大纲） ======== */
.toc-container {
    width: 250px;
    background: transparent;
    border: none;
    box-shadow: none;
    font-size: 14px;
    line-height: 1.5;
    position: sticky;
    top: 160px; /* 顶部导航条高度 + 元信息区域高度 */
    max-height: calc(100vh - 260px);
    overflow-y: auto;
    scroll-behavior: smooth;
    flex-shrink: 0;
    text-align: left;
    border-radius: 0;
    margin-top: 0 !important;
    display: flex;
    flex-direction: column;
    height: calc(100vh - 260px);
}

/* 大纲标题，始终固定不滚动 */
.toc-title {
    position: sticky;
    top: 0;
    background: transparent;
    padding: 10px 0;
    border-bottom: 1px solid #e0e0e0;
    z-index: 10;
}

.toc-title h2 {
    font-family: 'Merriweather', serif;
    color: #1d72b8;
    font-size: 1.2rem;
    margin: 0; /* 让它更紧凑 */
    padding: 0 10px; /* 内边距，可自行调 */
}

/* 大纲列表 */
.toc-list {
    overflow-y: auto;
    flex: 1;
    padding: 0 10px; /* 左右内边距 */
}

.toc-list .toc {
    list-style-type: none;
    padding-left: 0;
    counter-reset: h1counter;
    margin-top: 10px; /* 与标题分隔 */
}

.toc-list .toc ul {
    list-style-type: none;
    margin-left: 0;
    padding-left: 10px;
}

.toc-list .toc li {
    margin-bottom: 5px;
}

.toc-list .toc a {
    text-decoration: none;
    color: #333333;
    display: inline-block;
    position: relative;
    padding: 2px 0;
    word-wrap: break-word;
}

.toc-list .toc a:hover {
    text-decoration: underline;
    color: #1d72b8;
}

.toc .toc-h1 {
    counter-reset: h2counter;
    padding-left: 0;
    margin-bottom: 8px;
}

.toc .toc-h2 {
    counter-reset: h3counter;
    padding-left: 20px;
    margin-bottom: 6px;
}

.toc .toc-h3 {
    counter-reset: h4counter;
    padding-left: 40px;
    margin-bottom: 4px;
}

.toc .toc-h4 {
    counter-reset: h5counter;
    padding-left: 60px;
    margin-bottom: 3px;
}

.toc .toc-h5 {
    counter-reset: h6counter;
    padding-left: 80px;
    margin-bottom: 2px;
}

.toc .toc-h6 {
    padding-left: 100px;
    margin-bottom: 2px;
}

.toc .toc-h1 > a::before {
    counter-increment: h1counter;
    content: counter(h1counter) ". ";
    font-weight: bold;
    color: #1d72b8;
}

.toc-list .toc .toc-h2 > a::before {
    counter-increment: h2counter;
    content: counter(h1counter) "." counter(h2counter) " ";
    font-weight: normal;
    color: #555555;
}

.toc-list .toc .toc-h3 > a::before {
    counter-increment: h3counter;
    content: counter(h1counter) "." counter(h2counter) "." counter(h3counter) " ";
    color: #666666;
}

.toc-list .toc .toc-h4 > a::before {
    counter-increment: h4counter;
    content: counter(h1counter) "." counter(h2counter) "." counter(h3counter) "." counter(h4counter) " ";
    color: #777777;
}

.toc-list .toc .toc-h5 > a::before {
    counter-increment: h5counter;
    content: counter(h1counter) "." counter(h2counter) "." counter(h3counter) "." counter(h4counter) "." counter(h5counter) " ";
    color: #888888;
}

.toc-list .toc .toc-h6 > a::before {
    counter-increment: h6counter;
    content: counter(h1counter) "." counter(h2counter) "." counter(h3counter) "." counter(h4counter) "." counter(h5counter) "." counter(h6counter) " ";
    color: #999999;
}

.toc-list .toc .active {
    background-color: #e0f2fe;
    border-left: 4px solid #1d72b8;
    color: #1d72b8;
    font-weight: bold;
    padding-left: 6px;
}

/* 表格样式 */
table {
    width: 100%;
    border: 1px solid #ccc;
    border-collapse: collapse;
    margin: 1.5em 0;
}

th, td {
    border: 1px solid #ccc;
    padding: 0.75em 1em;
    text-align: left;
}

thead {
    background: #f3f3f3;
}

/* 行内代码块 */
code, kbd, .highlight-inline {
    background-color: #f2f2f2;
    color: #c7254e;
    font-family: Menlo, Monaco, Consolas, "Courier New", monospace;
    font-size: 90%;
    padding: 0.2em 0.4em;
    border-radius: 3px;
}

/* 代码块外层容器 */
.code-block-container {
    display: flex;
    flex-direction: column;
    position: relative;
    border-radius: 8px;
    overflow: hidden;
    margin-bottom: 1.5em;
}

.code-block {
    background-color: #282c34;
    color: #abb2bf;
    border-radius: 8px;
    padding: 0;
    margin-top: 20px;
    position: relative;
    overflow: auto;
}

.CodeMirror,
.cm-editor {
    height: auto;
}

.button-container {
    display: flex;
    justify-content: flex-end;
    padding: 10px 10px 0 0;
}

.output {
    background-color: #ffffff;
    color: #333333;
    border: 1px solid #ccc;
    padding: 10px;
    border-radius: 4px;
    margin: 10px 0 0 0;
    white-space: pre;
    min-height: 25px;
    display: none; /* 默认隐藏 */
    overflow-x: auto;
    position: relative; /* 便于右上角放复制按钮 */
}

/* ======== 响应式设计 ======== */
@media (max-width: 1024px) {
    .page-container {
        flex-direction: column;
        padding-top: 60px;
    }

    .sidebar {
        width: 100%;
        height: auto;
        position: relative;
        top: 0;
        margin-bottom: 20px;
    }

    .content {
        flex-direction: column;
    }

    .main-article, .toc-container {
        width: 100% !important;
        max-width: 100% !important;
        min-width: 100% !important;
    }

    .toc-container {
        margin-top: 20px;
        position: relative;
        top: 0;
        height: auto;
        display: block; /* 还原 layout */
    }
}

/* ======== 在更大屏幕下（如 >= 1400px）进行优化，让内容更宽一些 ======== */
@media (min-width: 1400px) {
    .page-container {
        max-width: 1400px;
    }
    .sidebar {
        width: 300px; /* 侧边栏再宽一点 */
    }
    .toc-container {
        width: 300px; /* TOC 也稍加宽 */
    }
    .main-article {
        /* 保持文章区在大屏时合适的宽度，避免文字一行太长 */
        width: 900px !important;
        max-width: 900px !important;
        min-width: 900px !important;
    }
}

/* ======== 底部 Footer ======== */
footer {
    background-color: #ffffff;
    text-align: center;
    padding: 0.5rem 0;
    border-top: 1px solid #e0e0e0;
    position: fixed;
    width: 100%;
    bottom: 0;
    left: 0;
    box-shadow: 0 -2px 4px rgba(0, 0, 0, 0.05);
    min-height: 50px;
    /* 初始隐藏在视窗下方 */
    transform: translateY(100%);
    transition: transform 0.3s ease-in-out;
}

footer p {
    margin: 0;
    color: #777777;
    font-size: 0.9rem;
}

footer.show-footer {
    transform: translateY(0);
}

/* ======== 图片灯箱样式 ======== */
.lightbox {
    display: none; /* 默认隐藏 */
    position: fixed;
    z-index: 9999;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    overflow: auto;
    background-color: rgba(0, 0, 0, 0.8);
}

.lightbox-figure {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    max-width: 90%;
    max-height: 90%;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
}

.lightbox-content {
    max-width: 100%;
    max-height: 100%;
    object-fit: contain;
    transition: transform 0.3s ease;
    cursor: zoom-in;
}

.lightbox-caption {
    text-align: center;
    color: #ccc;
    padding: 10px;
    max-width: 90%;
    margin: 0 auto;
}

.lightbox-close {
    position: absolute;
    top: 30px;
    right: 60px;
    color: #fff;
    font-size: 40px;
    font-weight: bold;
    cursor: pointer;
}

.lightbox-arrow {
    cursor: pointer;
    position: absolute;
    top: 50%;
    width: auto;
    margin-top: -30px;
    padding: 16px;
    color: #fff;
    font-weight: bold;
    font-size: 30px;
    user-select: none;
}

.lightbox-arrow-left {
    left: 20px;
}

.lightbox-arrow-right {
    right: 20px;
}

/* 放大状态下的样式 */
.zoomed {
    transform: scale(2);
    transform-origin: center center;
    cursor: zoom-out;
}

.admonition {
    margin: 1em 0;
    border-radius: 6px;
    padding: 1.2em 1.6em;
    border-left: 4px solid transparent;
    position: relative; /* 为了能在标题左侧放图标 */
}

/* 标题公共样式 */
.admonition-title {
    font-weight: bold;
    margin: 0 0 0.5em 0;
    font-size: 1.1em;
    display: flex;
    align-items: center;
}

/* 图标与标题文字的间距 */
.admonition-title i {
    margin-right: 8px;
}

/* ============ 重要(Important) 容器 ============ */
.admonition.important {
    background-color: #f2ecfc; /* 浅紫色背景 */
    border-left-color: #b295f5; /* 边线同一色系更深一点 */
    color: #4c3a6a; /* 紫色系文字 */
}

.admonition.important .admonition-title {
    color: #4c3a6a;
}

/* 信息(Info) */
.admonition.info {
    background-color: #e5f4fb; /* 浅蓝色背景 */
    border-left-color: #7bd3f4;
    color: #13567a;
}

.admonition.info .admonition-title {
    color: #13567a;
}

/* 注(Note) */
.admonition.note {
    background-color: #f6f6f7; /* 比较浅的灰色 */
    border-left-color: #b4b4b4;
    color: #333;
}

.admonition.note .admonition-title {
    color: #333;
}

/* 提示(Tip) */
.admonition.tip {
    background-color: #e4f7ea; /* 浅绿色 */
    border-left-color: #7ed09d;
    color: #104f27;
}

.admonition.tip .admonition-title {
    color: #104f27;
}

/* 注意(Warning) */
.admonition.warning {
    background-color: #fff8da; /* 浅黄色 */
    border-left-color: #ffd659;
    color: #634f00;
}

.admonition.warning .admonition-title {
    color: #634f00;
}

/* 危险(Danger) */
.admonition.danger {
    background-color: #ffe9eb; /* 浅红色 */
    border-left-color: #ff7587;
    color: #9f2431;
}

.admonition.danger .admonition-title {
    color: #9f2431;
}

/* =========== 全屏编辑器相关样式 =========== */
.fullscreen-code {
    position: fixed;
    top: 0;
    left: 0;
    z-index: 2000; /* 确保浮在最顶层 */
    width: 100vw;
    height: 100vh;
    background-color: #282c34; /* 与代码块背景一致 */
    margin: 0;
    padding: 16px;
    border-radius: 0;
    display: flex;
    flex-direction: column;
    justify-content: flex-start;
    align-items: stretch;
}

/* 全屏时，编辑器自适应撑满高度 */
.fullscreen-code .CodeMirror,
.fullscreen-code .cm-editor {
    flex: 1;
    height: auto !important;
    border: 1px solid #aaa;
    margin-bottom: 8px;
}

/* 全屏状态下的顶部操作区 */
.fullscreen-code .button-container {
    position: relative; /* 让右侧对齐可用 */
    justify-content: flex-end;
    margin-top: 0;
}

/* 全屏状态下的输出区域，高度可视情况设置 */
.fullscreen-code .output {
    flex: 0 0 150px;
    margin-bottom: 10px;
    overflow-y: auto;
}

/* =========== 新增：复制按钮与“已复制”提示样式 =========== */
.copy-button {
    position: absolute;
    top: 8px;
    right: 8px;
    background: rgba(255, 255, 255, 0.1);
    color: #ddd;
    border: none;
    border-radius: 4px;
    padding: 6px 10px;
    cursor: pointer;
    transition: background 0.3s;
    font-size: 14px;
}

.copy-button:hover {
    background: rgba(255, 255, 255, 0.25);
}

.copy-button i {
    margin-right: 4px;
}

.copy-hint {
    display: none;
    margin-right: 8px; /* “复制成功”与图标之间的间距 */
    color: #4caf50; /* 你可以改成自己想要的提示色 */
    font-size: 14px;
}

/* 在按钮右侧稍作延时后自动消失的话，可以在JS里移除，也可以用简单的过渡动画 */

/* ======== 文章页一体化阅读工作台 ======== */
body.article-page {
    --article-page: #f6f9fd;
    --article-surface: #ffffff;
    --article-surface-soft: #f7faff;
    --article-surface-blue: #edf5ff;
    --article-line: #dbe5f2;
    --article-line-soft: #eef3f9;
    --article-line-strong: #aebed3;
    --article-ink: #0d1b2f;
    --article-ink-soft: #41516a;
    --article-muted: #738197;
    --article-primary: #1167d8;
    --article-primary-deep: #0a4fa9;
    --article-green: #0d8f71;
    --article-amber: #b66a16;
    --article-violet: #5b3cc4;
    --article-danger: #c94a43;
    --article-radius: 8px;
    --article-left-width: clamp(252px, 20vw, 292px);
    --article-toc-width: clamp(206px, 17vw, 252px);
    --article-top-offset: 86px;
    --article-shell-height: calc(100vh - 106px);
    --article-font-heading: "Space Grotesk", "Noto Sans SC", "PingFang SC", sans-serif;
    --article-font-body: "Noto Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;
    --article-font-mono: "JetBrains Mono", "SFMono-Regular", "Consolas", monospace;
    color: var(--article-ink);
    background:
        linear-gradient(180deg, rgba(255, 255, 255, 0.76), rgba(246, 249, 253, 0.94)),
        var(--article-page);
    font-family: var(--article-font-body);
    font-size: 16px;
    line-height: 1.68;
}

.article-grid-bg {
    background:
        linear-gradient(180deg, rgba(255, 255, 255, 0.86), rgba(246, 249, 253, 0.94) 58%, rgba(239, 245, 252, 0.96)),
        linear-gradient(135deg, rgba(17, 103, 216, 0.08), rgba(17, 103, 216, 0) 34%),
        linear-gradient(315deg, rgba(13, 143, 113, 0.08), rgba(13, 143, 113, 0) 38%);
}

.article-page a {
    color: inherit;
}

.article-page a:hover {
    text-decoration: none;
}

.article-page h1,
.article-page h2,
.article-page h3,
.article-page h4,
.article-page h5,
.article-page h6 {
    color: var(--article-ink);
    font-family: var(--article-font-heading);
    letter-spacing: 0;
}

.article-page .page-container {
    position: relative;
    display: grid;
    grid-template-columns: var(--article-left-width) minmax(0, 1fr);
    gap: 0;
    width: min(calc(100% - 40px), 1504px);
    max-width: none;
    min-height: calc(100vh - 118px);
    margin: clamp(1rem, 1.7vw, 1.45rem) auto 4rem;
    padding: 0;
    border: 1px solid var(--article-line);
    border-radius: var(--article-radius);
    background: var(--article-surface);
    box-shadow: 0 24px 58px rgba(37, 62, 97, 0.11);
    transition: grid-template-columns 0.22s ease, width 0.22s ease;
}

.article-page .page-container::before {
    content: "";
    position: absolute;
    top: 0;
    bottom: 0;
    left: var(--article-left-width);
    width: 1px;
    background: var(--article-line);
    pointer-events: none;
    transition: opacity 0.18s ease;
}

.article-page .article-sidebar-shell {
    position: sticky;
    top: var(--article-top-offset);
    align-self: start;
    width: var(--article-left-width);
    height: var(--article-shell-height);
    min-width: 0;
    margin: 0;
    z-index: 5;
    transition: width 0.22s ease;
}

.article-page .sidebar {
    position: absolute;
    inset: 0;
    display: flex;
    flex-direction: column;
    width: 100%;
    height: 100%;
    padding: 0;
    overflow: hidden;
    border: 0;
    border-radius: var(--article-radius) 0 0 var(--article-radius);
    background: transparent;
    box-shadow: none;
    backdrop-filter: none;
}

.article-page .sidebar-panel-head,
.article-page .toc-title {
    background:
        linear-gradient(180deg, rgba(247, 250, 255, 0.98), rgba(255, 255, 255, 0.96));
}

.article-page .sidebar-panel-head {
    padding: 1rem 1rem 0.9rem;
    border-bottom: 1px solid var(--article-line);
}

.article-page .sidebar-home-link {
    min-height: 31px;
    margin-bottom: 0.78rem;
    padding: 0 0.55rem;
    border: 1px solid var(--article-line);
    border-radius: 7px;
    color: var(--article-muted);
    background: #fff;
    font-size: 0.78rem;
    font-weight: 800;
}

.article-page .sidebar-home-link:hover,
.article-page .sidebar-home-link:focus-visible {
    color: var(--article-primary);
    border-color: rgba(17, 103, 216, 0.28);
    background: var(--article-surface-blue);
    text-decoration: none;
}

.article-page .sidebar h3 {
    margin: 0;
    color: var(--article-ink);
    font-size: 1.02rem;
    font-weight: 800;
    line-height: 1.24;
}

.article-page .sidebar-panel-head p {
    margin: 0.34rem 0 0;
    color: var(--article-muted);
    font-size: 0.78rem;
    font-weight: 800;
}

.article-page .sidebar-tree-nav {
    flex: 1 1 auto;
    overflow-y: auto;
    overscroll-behavior: contain;
    scrollbar-width: thin;
    scrollbar-color: var(--article-line-strong) transparent;
}

.article-page .sidebar-tree-nav::-webkit-scrollbar,
.article-page .toc-list::-webkit-scrollbar {
    width: 8px;
}

.article-page .sidebar-tree-nav::-webkit-scrollbar-thumb,
.article-page .toc-list::-webkit-scrollbar-thumb {
    border-radius: 999px;
    background: var(--article-line-strong);
}

.article-page .sidebar ul,
.article-page .sidebar-tree {
    margin: 0;
    padding: 0.72rem 0.62rem 1rem;
    list-style: none;
}

.article-page .sidebar li,
.article-page .sidebar-tree-item {
    min-width: 0;
    margin: 0;
}

.article-page .folder-name,
.article-page .sidebar-tree-link {
    width: 100%;
    min-height: 34px;
    margin: 0;
    border-radius: 7px;
    outline: none;
    transition: color 0.16s ease, background-color 0.16s ease, box-shadow 0.16s ease;
}

.article-page .folder-name {
    display: grid;
    grid-template-columns: 20px minmax(0, 1fr) auto 12px;
    gap: 0.36rem;
    align-items: center;
    padding: 0.28rem 0.48rem;
    border: 0;
    color: #39465b;
    background: transparent;
    font-family: var(--article-font-body);
    font-size: 0.9rem;
    font-weight: 700;
    line-height: 1.42;
    text-align: left;
}

.article-page .sidebar-tree-link {
    display: grid;
    grid-template-columns: 20px minmax(0, 1fr);
    gap: 0.36rem;
    align-items: center;
    padding: 0.28rem 0.48rem;
    color: #405069;
    font-size: 0.9rem;
    font-weight: 600;
    line-height: 1.42;
    text-decoration: none;
}

.article-page .sidebar-tree-file-parent-row {
    display: grid;
    grid-template-columns: minmax(0, 1fr) auto;
    align-items: center;
    width: 100%;
    min-height: 34px;
    margin: 0;
    border-radius: 7px;
    overflow: hidden;
    transition: color 0.16s ease, background-color 0.16s ease, box-shadow 0.16s ease;
}

.article-page .sidebar-tree-file-parent-row .sidebar-tree-link {
    margin: 0;
    padding-right: 0.24rem;
}

.article-page .sidebar-tree-file-parent-row .sidebar-tree-link,
.article-page .sidebar-tree-file-parent-row .sidebar-tree-article-toggle {
    min-height: 34px;
    border-radius: 0;
    background: transparent;
}

.article-page .sidebar-tree-article-toggle {
    grid-template-columns: auto 12px;
    min-width: 44px;
    padding: 0.28rem 0.36rem;
}

.article-page .folder-name:hover,
.article-page .folder-name:focus-visible,
.article-page .sidebar-tree-link:hover,
.article-page .sidebar-tree-link:focus-visible {
    color: var(--article-primary);
    background: rgba(237, 245, 255, 0.92);
}

.article-page .sidebar-node-icon {
    display: inline-grid;
    place-items: center;
    width: 20px;
    height: 20px;
    color: #7a8799;
    font-size: 0.8rem;
}

.article-page .sidebar-node-label {
    min-width: 0;
    overflow: hidden;
    white-space: nowrap;
    text-overflow: ellipsis;
}

.article-page .folder-count {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    justify-self: end;
    min-width: 22px;
    height: 21px;
    padding: 0 0.35rem;
    border-radius: 999px;
    color: var(--article-muted);
    background: rgba(239, 244, 250, 0.86);
    font-size: 0.7rem;
    font-weight: 800;
}

.article-page .arrow-icon {
    justify-self: center;
    width: 12px;
    margin-left: 0;
    color: var(--article-muted);
    font-size: 0.76rem;
    transition: transform 0.16s ease, color 0.16s ease;
}

.article-page .sidebar-tree-folder.has-active > .folder-name,
.article-page .sidebar-tree-file.has-active > .sidebar-tree-file-parent-row .sidebar-tree-link,
.article-page .sidebar-tree-file.has-active > .sidebar-tree-file-parent-row .sidebar-tree-article-toggle,
.article-page .sidebar-tree-file-parent.is-active-item > .sidebar-tree-file-parent-row .sidebar-tree-article-toggle {
    color: var(--article-primary);
    background: rgba(237, 245, 255, 0.72);
}

.article-page .folder-name.is-open .arrow-icon {
    transform: rotate(90deg);
}

.article-page .sidebar-tree-link.active-file {
    color: var(--article-primary);
    background: #eaf3ff;
    font-weight: 800;
}

.article-page .sidebar-tree-file-parent > .sidebar-tree-file-parent-row:hover,
.article-page .sidebar-tree-file-parent > .sidebar-tree-file-parent-row:focus-within,
.article-page .sidebar-tree-file-parent.is-active-item > .sidebar-tree-file-parent-row,
.article-page .sidebar-tree-file-parent.has-active > .sidebar-tree-file-parent-row {
    background: #eaf3ff;
}

.article-page .sidebar-tree-file-parent > .sidebar-tree-file-parent-row .sidebar-tree-link:hover,
.article-page .sidebar-tree-file-parent > .sidebar-tree-file-parent-row .sidebar-tree-link:focus-visible,
.article-page .sidebar-tree-file-parent > .sidebar-tree-file-parent-row .sidebar-tree-link.active-file,
.article-page .sidebar-tree-file-parent > .sidebar-tree-file-parent-row .sidebar-tree-article-toggle:hover,
.article-page .sidebar-tree-file-parent > .sidebar-tree-file-parent-row .sidebar-tree-article-toggle:focus-visible,
.article-page .sidebar-tree-file-parent > .sidebar-tree-file-parent-row .sidebar-tree-article-toggle.is-open {
    background: transparent;
}

.article-page .folder-name:hover .sidebar-node-icon,
.article-page .folder-name:focus-visible .sidebar-node-icon,
.article-page .sidebar-tree-folder.has-active > .folder-name .sidebar-node-icon,
.article-page .sidebar-tree-link:hover .sidebar-node-icon,
.article-page .sidebar-tree-link:focus-visible .sidebar-node-icon,
.article-page .sidebar-tree-link.active-file .sidebar-node-icon {
    color: var(--article-primary);
}

.article-page .sidebar .nested,
.article-page .sidebar .nested .nested,
.article-page .sidebar .nested .nested .nested {
    display: none;
    margin: 0;
    padding: 0 0 0 0.68rem;
    border-left: 1px solid var(--article-line-soft);
}

.article-page .sidebar .nested.show {
    display: block;
}

.article-page .sidebar .nested li {
    margin-left: 0;
}

.article-page .nested .folder-name,
.article-page .nested .sidebar-tree-link {
    min-height: 31px;
    font-size: 0.84rem;
}

.article-page .nested .nested .folder-name,
.article-page .nested .nested .sidebar-tree-link {
    font-size: 0.8rem;
}

.article-page .content {
    position: relative;
    display: grid;
    grid-template-columns: minmax(0, 1fr) var(--article-toc-width);
    gap: 0;
    align-items: start;
    min-width: 0;
}

.article-page .content::before {
    content: "";
    position: absolute;
    top: 0;
    right: var(--article-toc-width);
    bottom: 0;
    width: 1px;
    background: var(--article-line);
    pointer-events: none;
}

.article-page .main-article,
.article-page .toc-container {
    border: 0;
    border-radius: 0;
    background: transparent;
    box-shadow: none;
}

.article-page .main-article {
    justify-self: center;
    width: 100% !important;
    max-width: 920px !important;
    min-width: 0 !important;
    margin: 0 !important;
    padding: clamp(1.55rem, 3vw, 3rem) clamp(1.35rem, 4.5vw, 4.25rem) 4rem;
    overflow: visible;
}

.article-page .meta-info {
    gap: 0.5rem 0.56rem;
    margin: 0 0 1.3rem;
    padding: 0 0 1.1rem;
    border: 0;
    border-bottom: 1px solid var(--article-line);
    border-radius: 0;
    background: transparent;
}

.article-page .meta-info h1 {
    margin: 0 0 0.3rem;
    color: var(--article-ink);
    font-size: clamp(2rem, 3vw, 3.05rem);
    font-weight: 800;
    line-height: 1.12;
}

.article-page .meta-item {
    min-height: 30px;
    margin: 0;
    padding: 0.22rem 0.52rem;
    border: 1px solid var(--article-line);
    border-radius: 7px;
    color: var(--article-ink-soft);
    background: var(--article-surface-soft);
    font-size: 0.8rem;
    font-weight: 750;
}

.article-page .meta-label {
    color: var(--article-ink);
    font-weight: 800;
}

.article-page .meta-label i {
    color: var(--article-primary);
}

.article-page .meta-tags,
.article-page .meta-categories {
    gap: 0.32rem;
}

.article-page .meta-tags span,
.article-page .meta-categories span {
    margin-right: 0;
    padding: 0.14rem 0.42rem;
    border: 1px solid rgba(17, 103, 216, 0.16);
    border-radius: 6px;
    color: var(--article-primary);
    background: var(--article-surface-blue);
    font-size: 0.76rem;
    font-weight: 800;
}

.article-page .meta-tags .meta-label,
.article-page .meta-categories .meta-label {
    padding: 0;
    border: 0;
    color: var(--article-ink);
    background: transparent;
}

.article-page .main-article > hr {
    display: none;
}

.article-page #content {
    color: var(--article-ink);
    font-size: 1.02rem;
    line-height: 1.88;
}

.article-page #content h1,
.article-page #content h2,
.article-page #content h3,
.article-page #content h4,
.article-page #content h5,
.article-page #content h6 {
    scroll-margin-top: 96px;
    margin: 1.55em 0 0.58em;
    line-height: 1.24;
}

.article-page #content h1 {
    font-size: 2rem;
}

.article-page #content h2 {
    padding-bottom: 0.44rem;
    border-bottom: 1px solid var(--article-line);
    font-size: 1.58rem;
}

.article-page #content h3 {
    font-size: 1.28rem;
}

.article-page #content p,
.article-page #content li {
    color: var(--article-ink-soft);
}

.article-page #content a {
    color: var(--article-primary);
    font-weight: 800;
    text-decoration: none;
    text-underline-offset: 0.18em;
}

.article-page #content a:hover {
    color: var(--article-primary-deep);
    text-decoration: underline;
}

.article-page #content blockquote {
    margin: 1.25rem 0;
    padding: 0.9rem 1rem;
    border-left: 3px solid var(--article-primary);
    border-radius: 0 var(--article-radius) var(--article-radius) 0;
    color: var(--article-ink-soft);
    background: var(--article-surface-blue);
}

.article-page .main-article img {
    margin: 1.15rem auto;
    border: 1px solid var(--article-line);
    border-radius: var(--article-radius);
    box-shadow: 0 12px 28px rgba(37, 62, 97, 0.1);
}

.article-page .alt-caption {
    color: var(--article-muted);
    font-size: 0.86rem;
    font-weight: 700;
}

.article-page .toc-container {
    position: sticky;
    top: var(--article-top-offset);
    width: auto;
    height: var(--article-shell-height);
    max-height: var(--article-shell-height);
    overflow: hidden;
}

.article-page .toc-title {
    position: sticky;
    top: 0;
    padding: 0;
    border-bottom: 1px solid var(--article-line);
    z-index: 2;
}

.article-page .toc-title h2 {
    margin: 0;
    padding: 1rem 1rem 0.92rem;
    color: var(--article-ink);
    font-size: 0.98rem;
    font-weight: 800;
    line-height: 1.2;
}

.article-page .toc-list {
    flex: 1;
    padding: 0.78rem 0.66rem 1rem;
    overflow-y: auto;
    scrollbar-width: thin;
    scrollbar-color: var(--article-line-strong) transparent;
}

.article-page .toc-list .toc {
    margin: 0;
    padding: 0;
}

.article-page .toc-list .toc li {
    margin-bottom: 0.12rem;
}

.article-page .toc-list .toc a {
    display: block;
    width: 100%;
    padding: 0.34rem 0.48rem;
    border-radius: 7px;
    color: var(--article-ink-soft);
    font-size: 0.83rem;
    font-weight: 700;
    line-height: 1.36;
    text-decoration: none;
}

.article-page .toc-list .toc a:hover,
.article-page .toc-list .toc .active {
    color: var(--article-primary);
    background: var(--article-surface-blue);
    text-decoration: none;
}

.article-page .toc-list .toc .active {
    border-left: none;
    padding-left: 0.48rem;
    font-weight: 800;
}

.article-page .toc .toc-h1 > a::before,
.article-page .toc-list .toc .toc-h2 > a::before,
.article-page .toc-list .toc .toc-h3 > a::before,
.article-page .toc-list .toc .toc-h4 > a::before,
.article-page .toc-list .toc .toc-h5 > a::before,
.article-page .toc-list .toc .toc-h6 > a::before {
    color: var(--article-primary);
}

.article-page table {
    border: 1px solid var(--article-line);
    border-radius: var(--article-radius);
    border-collapse: separate;
    border-spacing: 0;
    overflow: hidden;
    background: var(--article-surface);
    box-shadow: 0 10px 24px rgba(37, 62, 97, 0.08);
}

.article-page th,
.article-page td {
    border: 0;
    border-bottom: 1px solid var(--article-line);
    color: var(--article-ink-soft);
}

.article-page th + th,
.article-page td + td {
    border-left: 1px solid var(--article-line);
}

.article-page tr:last-child td {
    border-bottom: 0;
}

.article-page thead {
    background: var(--article-surface-soft);
}

.article-page th {
    color: var(--article-ink);
    font-weight: 800;
}

.article-page code,
.article-page kbd,
.article-page .highlight-inline {
    color: var(--article-primary);
    background: var(--article-surface-blue);
    border: 1px solid rgba(17, 103, 216, 0.13);
    border-radius: 6px;
    font-family: var(--article-font-mono);
    font-size: 0.9em;
}

.article-page .code-block-container {
    margin: 1.25rem 0 1.7rem;
    border: 1px solid #c8d6e9;
    border-radius: var(--article-radius);
    background: #111827;
    box-shadow: 0 16px 34px rgba(17, 24, 39, 0.16);
}

.article-page .code-block {
    margin-top: 0;
    border-radius: 0;
    background: #111827;
}

.article-page .CodeMirror,
.article-page .cm-editor {
    font-family: var(--article-font-mono);
    font-size: 0.92rem;
    line-height: 1.55;
}

.article-page .button-container {
    gap: 0.55rem;
    padding: 0.72rem;
    border-top: 1px solid rgba(255, 255, 255, 0.08);
    background: #172033;
}

.article-page button.run-button,
.article-page button.reset-button,
.article-page button.fullscreen-button {
    min-height: 36px;
    margin-left: 0;
    padding: 0 0.8rem;
    border: 1px solid transparent;
    border-radius: 7px;
    font-family: var(--article-font-body);
    font-size: 0.86rem;
    font-weight: 800;
    line-height: 1;
    transition: transform 0.16s ease, background-color 0.16s ease, border-color 0.16s ease;
}

.article-page button.run-button {
    background: var(--article-primary);
}

.article-page button.reset-button,
.article-page button.fullscreen-button {
    color: #dbe7ff;
    border-color: rgba(255, 255, 255, 0.14);
    background: rgba(255, 255, 255, 0.08);
}

.article-page button.run-button:hover,
.article-page button.reset-button:hover,
.article-page button.fullscreen-button:hover {
    transform: translateY(-1px);
    background: var(--article-primary-deep);
}

.article-page .output {
    margin: 0;
    padding: 0.85rem 1rem;
    border: 0;
    border-top: 1px solid var(--article-line);
    border-radius: 0;
    color: var(--article-ink);
    background: #fbfdff;
    font-family: var(--article-font-mono);
    font-size: 0.9rem;
}

.article-page .copy-button {
    top: 10px;
    right: 10px;
    border: 1px solid rgba(255, 255, 255, 0.14);
    border-radius: 7px;
    background: rgba(255, 255, 255, 0.1);
    font-family: var(--article-font-body);
    font-weight: 800;
}

.article-page .copy-button:hover {
    background: rgba(17, 103, 216, 0.9);
}

.article-page .copy-hint {
    color: #86efac;
}

.article-page .admonition {
    border-radius: var(--article-radius);
    box-shadow: 0 8px 20px rgba(37, 62, 97, 0.07);
}

.article-page .admonition-title {
    font-family: var(--article-font-heading);
}

.article-page .admonition.important {
    background-color: #f3efff;
    border-left-color: var(--article-violet);
    color: #392574;
}

.article-page .admonition.info {
    background-color: var(--article-surface-blue);
    border-left-color: var(--article-primary);
    color: #123b76;
}

.article-page .admonition.note {
    background-color: #f5f8fc;
    border-left-color: var(--article-line-strong);
    color: var(--article-ink-soft);
}

.article-page .admonition.tip {
    background-color: #e9f8f3;
    border-left-color: var(--article-green);
    color: #0a5942;
}

.article-page .admonition.warning {
    background-color: #fff6e9;
    border-left-color: var(--article-amber);
    color: #70420b;
}

.article-page .admonition.danger {
    background-color: #fff0ef;
    border-left-color: var(--article-danger);
    color: #8a2721;
}

.article-page .fullscreen-code {
    z-index: 2000;
    width: 100vw;
    height: 100vh;
    padding: 1rem;
    border: 0;
    border-radius: 0;
    background: #111827;
}

.article-page .fullscreen-code .button-container {
    border-top: 0;
}

.article-page .article-sidebar-rail-toggle {
    position: absolute;
    top: 0;
    left: calc(100% - 14px);
    display: grid;
    place-items: center;
    width: 28px;
    height: 100%;
    padding: 0;
    border: 0;
    color: var(--article-muted);
    background: transparent;
    cursor: pointer;
    z-index: 6;
}

.article-page .article-sidebar-rail-toggle::before {
    content: "";
    position: absolute;
    left: 50%;
    top: 0;
    bottom: 0;
    width: 1px;
    background: var(--article-line);
}

.article-page .article-sidebar-rail-toggle::after {
    content: "";
    position: absolute;
    left: 50%;
    top: 50%;
    width: 22px;
    height: 48px;
    border: 1px solid var(--article-line);
    border-radius: 999px;
    background: #fff;
    box-shadow: 0 8px 18px rgba(37, 62, 97, 0.12);
    transform: translate(-50%, -50%);
    transition: border-color 0.18s ease, box-shadow 0.18s ease, background-color 0.18s ease;
}

.article-page .article-sidebar-rail-arrow {
    position: relative;
    z-index: 1;
    width: 8px;
    height: 8px;
    border: solid currentColor;
    border-width: 0 2px 2px 0;
    transform: rotate(135deg);
    transition: transform 0.18s ease, color 0.18s ease;
}

.article-page .article-sidebar-rail-toggle:hover,
.article-page .article-sidebar-rail-toggle:focus-visible {
    color: var(--article-primary);
    outline: none;
}

.article-page .article-sidebar-rail-toggle:hover::after,
.article-page .article-sidebar-rail-toggle:focus-visible::after {
    border-color: rgba(17, 103, 216, 0.3);
    box-shadow: 0 10px 22px rgba(37, 62, 97, 0.17);
}

.article-page.is-article-sidebar-collapsed .page-container {
    --article-left-width: 0px;
    grid-template-columns: 0 minmax(0, 1fr);
}

.article-page.is-article-sidebar-collapsed .page-container::before {
    opacity: 0;
}

.article-page.is-article-sidebar-collapsed .article-sidebar-shell {
    width: 0;
}

.article-page.is-article-sidebar-collapsed .sidebar {
    position: fixed;
    top: var(--article-top-offset);
    left: 0;
    width: var(--article-left-width);
    height: var(--article-shell-height);
    transform: translateX(-100%);
    pointer-events: none;
}

.article-page.is-article-sidebar-collapsed .article-sidebar-rail-toggle {
    position: fixed;
    top: var(--article-top-offset);
    left: 0;
    height: var(--article-shell-height);
    pointer-events: auto;
}

.article-page.is-article-sidebar-collapsed .article-sidebar-rail-toggle::before {
    left: 0;
}

.article-page.is-article-sidebar-collapsed .article-sidebar-rail-arrow {
    transform: rotate(-45deg);
}

.article-page footer {
    border-top: 1px solid var(--article-line);
    background: rgba(255, 255, 255, 0.92);
    backdrop-filter: blur(18px);
    box-shadow: 0 -8px 20px rgba(37, 62, 97, 0.08);
}

.article-page footer p {
    color: var(--article-muted);
    font-family: var(--article-font-body);
    font-weight: 700;
}

@media (max-width: 1180px) {
    .article-page .page-container,
    .article-page.is-article-sidebar-collapsed .page-container {
        grid-template-columns: 1fr;
        width: min(calc(100% - 28px), 960px);
        min-height: 0;
    }

    .article-page .page-container::before,
    .article-page .content::before {
        display: none;
    }

    .article-page .article-sidebar-shell,
    .article-page.is-article-sidebar-collapsed .article-sidebar-shell {
        position: relative;
        top: 0;
        width: 100%;
        height: auto;
        max-height: 42vh;
        border-bottom: 1px solid var(--article-line);
    }

    .article-page .sidebar,
    .article-page.is-article-sidebar-collapsed .sidebar {
        position: relative;
        inset: auto;
        width: 100%;
        height: auto;
        max-height: 42vh;
        border-radius: var(--article-radius) var(--article-radius) 0 0;
        transform: none;
        pointer-events: auto;
    }

    .article-page .article-sidebar-rail-toggle,
    .article-page.is-article-sidebar-collapsed .article-sidebar-rail-toggle {
        display: none;
    }

    .article-page .content {
        grid-template-columns: 1fr;
    }

    .article-page .main-article {
        max-width: 880px !important;
        padding: clamp(1.3rem, 4vw, 2.4rem);
    }

    .article-page .toc-container {
        position: relative;
        top: 0;
        width: 100% !important;
        height: auto;
        max-height: none;
        border-top: 1px solid var(--article-line);
        overflow: visible;
    }

    .article-page .toc-list {
        max-height: 32vh;
    }
}

@media (max-width: 760px) {
    body.article-page {
        font-size: 15px;
    }

    .article-page .page-container,
    .article-page.is-article-sidebar-collapsed .page-container {
        width: calc(100% - 20px);
        margin-top: 0.75rem;
        margin-bottom: 3.25rem;
    }

    .article-page .sidebar-panel-head {
        padding: 0.9rem 0.85rem 0.78rem;
    }

    .article-page .sidebar ul,
    .article-page .sidebar-tree {
        padding: 0.62rem 0.5rem 0.86rem;
    }

    .article-page .main-article {
        padding: 1.05rem 1rem 2.2rem;
    }

    .article-page .meta-info h1 {
        font-size: 1.82rem;
    }

    .article-page .meta-item {
        width: 100%;
    }

    .article-page #content {
        font-size: 1rem;
        line-height: 1.82;
    }

    .article-page #content h1 {
        font-size: 1.72rem;
    }

    .article-page #content h2 {
        font-size: 1.38rem;
    }

    .article-page .button-container {
        justify-content: flex-start;
    }

    .article-page button.run-button,
    .article-page button.reset-button,
    .article-page button.fullscreen-button {
        flex: 1 1 auto;
        min-width: 118px;
    }
}