/* ==========================================================================
   GitHub 个人页风格主题 - 正文排版（markdown.css）
   对齐 GitHub markdown-body 排版规则，复用 style.css 的 Design Tokens
   作用域：.gh-article-body.markdown
   ========================================================================== */

.gh-article-body.markdown {
    font-size: 16px;
    line-height: 1.7;
    word-wrap: break-word;
    color: var(--fg-default);
}

.gh-article-body.markdown::before {
    content: "";
    display: table;
}

.gh-article-body.markdown::after {
    content: "";
    display: table;
    clear: both;
}

.gh-article-body.markdown > *:first-child {
    margin-top: 0 !important;
}

.gh-article-body.markdown > *:last-child {
    margin-bottom: 0 !important;
}

/* ---------- 链接 ---------- */
.gh-article-body.markdown a {
    color: var(--accent-fg);
    background-color: transparent;
    text-decoration: none;
}

.gh-article-body.markdown a:hover {
    text-decoration: underline;
}

.gh-article-body.markdown a:not([href]) {
    color: inherit;
    text-decoration: none;
}

/* ---------- 标题 ---------- */
.gh-article-body.markdown h1,
.gh-article-body.markdown h2,
.gh-article-body.markdown h3,
.gh-article-body.markdown h4,
.gh-article-body.markdown h5,
.gh-article-body.markdown h6 {
    margin-top: 24px;
    margin-bottom: 16px;
    font-weight: 600;
    line-height: 1.25;
}

.gh-article-body.markdown h1 {
    padding-bottom: 0.3em;
    font-size: 2em;
    border-bottom: 1px solid var(--border-muted);
}

.gh-article-body.markdown h2 {
    padding-bottom: 0.3em;
    font-size: 1.5em;
    border-bottom: 1px solid var(--border-muted);
}

.gh-article-body.markdown h3 {
    font-size: 1.25em;
}

.gh-article-body.markdown h4 {
    font-size: 1em;
}

.gh-article-body.markdown h5 {
    font-size: 0.875em;
}

.gh-article-body.markdown h6 {
    font-size: 0.85em;
    color: var(--fg-muted);
}

/* ---------- 段落 / 文本 ---------- */
.gh-article-body.markdown p,
.gh-article-body.markdown blockquote,
.gh-article-body.markdown ul,
.gh-article-body.markdown ol,
.gh-article-body.markdown dl,
.gh-article-body.markdown table,
.gh-article-body.markdown pre,
.gh-article-body.markdown details {
    margin-top: 0;
    margin-bottom: 16px;
}

.gh-article-body.markdown b,
.gh-article-body.markdown strong {
    font-weight: 600;
}

.gh-article-body.markdown small {
    font-size: 90%;
}

.gh-article-body.markdown sub,
.gh-article-body.markdown sup {
    position: relative;
    font-size: 75%;
    line-height: 0;
    vertical-align: baseline;
}

.gh-article-body.markdown sub {
    bottom: -0.25em;
}

.gh-article-body.markdown sup {
    top: -0.5em;
}

.gh-article-body.markdown mark {
    background-color: var(--attention-subtle);
    color: var(--fg-default);
}

/* ---------- 分隔线 ---------- */
.gh-article-body.markdown hr {
    height: 0.25em;
    padding: 0;
    margin: 24px 0;
    background-color: var(--border-muted);
    border: 0;
}

.gh-article-body.markdown hr::before {
    display: table;
    content: "";
}

.gh-article-body.markdown hr::after {
    display: table;
    clear: both;
    content: "";
}

/* ---------- 引用 ---------- */
.gh-article-body.markdown blockquote {
    /* 浏览器默认左右 40px margin 会脱离正文左缘，显式归零 */
    margin-left: 0;
    margin-right: 0;
    padding: 0 1em;
    color: var(--fg-muted);
    border-left: 0.25em solid var(--border-default);
}

.gh-article-body.markdown blockquote > :first-child {
    margin-top: 0;
}

.gh-article-body.markdown blockquote > :last-child {
    margin-bottom: 0;
}

/* ---------- 列表 ---------- */
.gh-article-body.markdown ul,
.gh-article-body.markdown ol {
    padding-left: 2em;
}

.gh-article-body.markdown ul {
    list-style: disc;
}

.gh-article-body.markdown ol {
    list-style: decimal;
}

.gh-article-body.markdown ol[type="a"] {
    list-style-type: lower-alpha;
}

.gh-article-body.markdown ol[type="i"] {
    list-style-type: lower-roman;
}

.gh-article-body.markdown li {
    word-wrap: break-word;
}

.gh-article-body.markdown li > p {
    margin-top: 16px;
}

.gh-article-body.markdown li + li {
    margin-top: 0.25em;
}

.gh-article-body.markdown li > ul,
.gh-article-body.markdown li > ol {
    margin-top: 0.25em;
    margin-bottom: 0;
}

.gh-article-body.markdown dl {
    padding: 0;
}

.gh-article-body.markdown dl dt {
    padding: 0;
    margin-top: 16px;
    font-size: 1em;
    font-style: italic;
    font-weight: 600;
}

.gh-article-body.markdown dl dd {
    padding: 0 16px;
    margin-bottom: 16px;
}

/* ---------- 代码 ---------- */
.gh-article-body.markdown code,
.gh-article-body.markdown tt {
    padding: 0.2em 0.4em;
    margin: 0;
    font-family: var(--font-mono);
    font-size: 85%;
    white-space: break-spaces;
    background-color: rgba(175, 184, 193, 0.2);
    border-radius: 6px;
}

[data-theme="dark"] .gh-article-body.markdown code,
[data-theme="dark"] .gh-article-body.markdown tt {
    background-color: rgba(110, 118, 129, 0.4);
}

.gh-article-body.markdown code::before,
.gh-article-body.markdown code::after,
.gh-article-body.markdown tt::before,
.gh-article-body.markdown tt::after {
    letter-spacing: -0.2em;
    content: "\00a0";
}

.gh-article-body.markdown pre {
    padding: 16px;
    overflow: auto;
    font-family: var(--font-mono);
    font-size: 85%;
    line-height: 1.45;
    color: var(--fg-default);
    background-color: var(--canvas-subtle);
    border-radius: 6px;
    word-wrap: normal;
}

.gh-article-body.markdown pre code,
.gh-article-body.markdown pre tt {
    display: inline;
    max-width: auto;
    padding: 0;
    margin: 0;
    overflow: visible;
    line-height: inherit;
    word-wrap: normal;
    background-color: transparent;
    border: 0;
    font-size: 100%;
    white-space: pre;
}

.gh-article-body.markdown pre code::before,
.gh-article-body.markdown pre code::after,
.gh-article-body.markdown pre tt::before,
.gh-article-body.markdown pre tt::after {
    content: normal;
}

.gh-article-body.markdown kbd {
    display: inline-block;
    padding: 3px 5px;
    font-family: var(--font-mono);
    font-size: 11px;
    line-height: 10px;
    color: var(--fg-default);
    vertical-align: middle;
    background-color: var(--canvas-subtle);
    border: solid 1px var(--border-default);
    border-bottom-color: var(--border-default);
    border-radius: 6px;
    box-shadow: inset 0 -1px 0 var(--border-default);
}

/* ---------- 表格 ---------- */
.gh-article-body.markdown table {
    display: block;
    width: max-content;
    max-width: 100%;
    overflow: auto;
    border-spacing: 0;
    border-collapse: collapse;
}

.gh-article-body.markdown table th {
    font-weight: 600;
}

.gh-article-body.markdown table th,
.gh-article-body.markdown table td {
    padding: 6px 13px;
    border: 1px solid var(--border-default);
}

.gh-article-body.markdown table tr {
    background-color: var(--canvas-default);
    border-top: 1px solid var(--border-muted);
}

.gh-article-body.markdown table tr:nth-child(2n) {
    background-color: var(--canvas-subtle);
}

.gh-article-body.markdown table img {
    background-color: transparent;
}

/* ---------- 图片 / 媒体 ---------- */
.gh-article-body.markdown img {
    max-width: 100%;
    height: auto;
    box-sizing: content-box;
    background-color: var(--canvas-default);
    border-radius: 4px;
}

/* 键盘聚焦正文图：与全站焦点指示一致的 2px 强调描边（WCAG 2.4.7） */
.gh-article-body.markdown img:focus-visible {
    outline: 2px solid var(--accent-emphasis);
    outline-offset: 2px;
}

.gh-article-body.markdown img[align="right"] {
    padding-left: 20px;
}

.gh-article-body.markdown img[align="left"] {
    padding-right: 20px;
}

.gh-article-body.markdown video {
    max-width: 100%;
}

.gh-article-body.markdown figure {
    margin: 16px 0;
}

.gh-article-body.markdown figure img {
    display: block;
}

.gh-article-body.markdown figcaption {
    margin-top: 8px;
    font-size: 14px;
    color: var(--fg-muted);
    text-align: center;
}

/* ---------- 折叠块 ---------- */
.gh-article-body.markdown details {
    border: 1px solid var(--border-default);
    border-radius: 6px;
    padding: 0 16px;
    transition: border-color var(--dur, 120ms) var(--ease-out, ease);
}

.gh-article-body.markdown details summary {
    padding: 8px 0;
    font-weight: 600;
    cursor: pointer;
    transition: color var(--dur, 120ms) var(--ease-out, ease);
}

.gh-article-body.markdown details summary:hover {
    color: var(--accent-fg);
}

.gh-article-body.markdown details[open] > summary {
    border-bottom: 1px solid var(--border-muted);
    margin-bottom: 8px;
}

/* ---------- 行内元素 ---------- */
.gh-article-body.markdown abbr[title] {
    border-bottom: none;
    text-decoration: underline dotted;
}

.gh-article-body.markdown .emoji {
    max-width: none;
    vertical-align: text-top;
    background-color: transparent;
}

/* 正文内锚点跳转偏移：sticky 顶栏高约 72px */
.gh-article-body.markdown [id] {
    scroll-margin-top: 84px;
}

/* ---------- 代码块复制按钮 ---------- */
.gh-pre-wrap {
    position: relative;
    margin-bottom: 16px;
}

/* 代码块头栏：语言名 + 复制按钮 */
.gh-pre-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 6px 8px 6px 12px;
    background-color: var(--canvas-subtle);
    border: 1px solid var(--border-muted);
    border-bottom: 0;
    border-radius: 8px 8px 0 0;
}

.gh-pre-lang {
    font-family: var(--font-mono);
    font-size: 12px;
    color: var(--fg-muted);
}

.gh-pre-header + pre,
.gh-pre-wrap > pre {
    margin-bottom: 0;
    border-radius: 0 0 8px 8px;
    border-top: 0;
}

/* 高优先级：确保阅读布局等上下文不破坏头栏拼接 */
.gh-article-body.markdown .gh-pre-wrap > pre,
.gh-layout-reading .gh-article-body.markdown .gh-pre-wrap > pre {
    margin-bottom: 0;
    border-radius: 0 0 8px 8px;
    border-top: 0;
}

.gh-copy-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 28px;
    height: 28px;
    padding: 0;
    color: var(--fg-muted);
    background-color: transparent;
    border: 1px solid transparent;
    border-radius: 6px;
    cursor: pointer;
    opacity: 0.7;
    transition: opacity var(--dur, 120ms) var(--ease-out, ease), color var(--dur, 120ms) var(--ease-out, ease), border-color var(--dur, 120ms) var(--ease-out, ease), background-color var(--dur, 120ms) var(--ease-out, ease);
}

.gh-pre-wrap:hover .gh-copy-btn,
.gh-copy-btn:focus-visible,
.gh-copy-btn.copied {
    opacity: 1;
}

.gh-copy-btn:hover {
    color: var(--fg-default);
    border-color: var(--border-default);
}

.gh-copy-btn.copied {
    color: var(--success-fg);
    border-color: rgba(26, 127, 55, 0.4);
}