/* ===== .mk14 - Markdown & Math Formula Optimized Styles ===== */
/* 版本：1.0.0 */
/* 设计目标：专为 ml_luojihuigui.html 等页面的数学公式渲染优化 */
/* 核心特点：
 *   1. 完全独立于 .mk12 / .mk13，避免 CSS 层级覆盖冲突
 *   2. 针对 KaTeX 渲染引擎深度优化，确保公式颜色/布局正确
 *   3. 同时兼容 math-render.js 的简单正则渲染输出
 *   4. 使用适度优先级，减少无意义的 !important 堆砌
 */

/* ==================== .mk14 容器基础样式 ==================== */
.mk14 {
    background-color: #1e1e2e;
    border: 1px solid #31314a;
    border-radius: 10px;
    padding: 22px;
    margin: 16px 0;
    font-family: 'KaTeX_Main', 'Times New Roman', 'Microsoft YaHei', 'PingFang SC', 'Hiragino Sans GB', -apple-system, sans-serif;
    font-size: 15px;
    line-height: 1.75;
    overflow-x: auto;
    color: #e2e8f0;
    box-shadow: 0 4px 14px rgba(0, 0, 0, 0.35);
    word-wrap: break-word;
}

/* ==================== 标题样式 ==================== */
.mk14 h1, .mk14 h2, .mk14 h3, .mk14 h4, .mk14 h5, .mk14 h6 {
    margin-top: 18px;
    margin-bottom: 12px;
    font-weight: 600;
    color: #f8fafc;
    line-height: 1.35;
}

.mk14 h1 {
    font-size: 1.75em;
    border-bottom: 2px solid #c084fc;
    padding-bottom: 10px;
    margin-top: 26px;
}

.mk14 h2 {
    font-size: 1.45em;
    border-bottom: 1px solid #a78bfa;
    padding-bottom: 8px;
    margin-top: 22px;
}

.mk14 h3 { font-size: 1.25em; color: #c084fc; margin-top: 18px; }
.mk14 h4 { font-size: 1.15em; color: #d8b4fe; }
.mk14 h5 { font-size: 1.05em; color: #e9d5ff; }
.mk14 h6 { font-size: 1em; color: #f3e8ff; }

/* ==================== 段落与文本样式 ==================== */
.mk14 p {
    margin: 12px 0;
    line-height: 1.75;
    text-align: justify;
    color: #e2e8f0;
}

.mk14 strong, .mk14 b { font-weight: 600; color: #f8fafc; }
.mk14 em, .mk14 i { font-style: italic; color: #e2e8f0; }
.mk14 hr { border: none; border-top: 1px solid #475569; margin: 18px 0; }

/* ==================== 列表样式 ==================== */
.mk14 ul, .mk14 ol {
    margin: 10px 0;
    padding-left: 26px;
    color: #e2e8f0;
}

.mk14 ul { list-style-type: disc; }
.mk14 ol { list-style-type: decimal; }
.mk14 li { margin: 6px 0; line-height: 1.6; padding-left: 4px; }

.mk14 ul ul { list-style-type: circle; margin: 6px 0; padding-left: 22px; }
.mk14 ol ol { list-style-type: lower-alpha; margin: 6px 0; padding-left: 22px; }

/* ==================== 链接样式 ==================== */
.mk14 a {
    color: #c084fc;
    text-decoration: none;
    border-bottom: 1px dotted #c084fc;
    transition: all 0.2s ease;
}

.mk14 a:hover {
    color: #d8b4fe;
    border-bottom-style: solid;
}

/* ==================== 引用样式 ==================== */
.mk14 blockquote {
    border-left: 4px solid #c084fc;
    margin: 14px 0;
    padding: 10px 18px;
    background-color: rgba(192, 132, 252, 0.06);
    color: #cbd5e1;
    font-style: italic;
    border-radius: 0 8px 8px 0;
}

/* ==================== 图片样式 ==================== */
.mk14 img {
    max-width: 100%;
    height: auto;
    margin: 14px 0;
    border-radius: 8px;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.3);
}

/* ==================== 代码块样式 ==================== */
.mk14 pre {
    background: linear-gradient(135deg, #0f0f1e 0%, #1a1a32 100%);
    border: 1px solid rgba(192, 132, 252, 0.35);
    border-radius: 10px;
    padding: 18px;
    margin: 16px 0;
    overflow-x: auto;
    font-size: 0.95em;
    line-height: 1.7;
    box-shadow: 0 4px 12px rgba(192, 132, 252, 0.08), inset 0 1px 0 rgba(255, 255, 255, 0.05);
    font-family: 'Monaco', 'Menlo', 'Ubuntu Mono', 'Consolas', 'Source Code Pro', monospace;
    color: #e2e8f0;
}

.mk14 pre code {
    background-color: transparent;
    border: none;
    padding: 0;
    border-radius: 0;
    box-shadow: none;
    font-size: 0.95em;
    color: #e2e8f0;
    font-family: 'Monaco', 'Menlo', 'Ubuntu Mono', 'Consolas', 'Source Code Pro', monospace;
    display: block;
    white-space: pre;
}

/* 行内代码 */
.mk14 :not(pre) > code,
.mk14 p > code,
.mk14 li > code,
.mk14 td > code,
.mk14 th > code {
    background: linear-gradient(135deg, #1e1e3f 0%, #2a2a55 100%);
    border: 1px solid rgba(192, 132, 252, 0.2);
    padding: 3px 10px;
    border-radius: 6px;
    font-family: 'Monaco', 'Menlo', 'Ubuntu Mono', 'Consolas', monospace;
    font-size: 0.85em;
    color: #e2e8f0;
    display: inline;
    white-space: nowrap;
}

/* ==================== 表格样式 ==================== */
.mk14 table {
    border-collapse: collapse;
    width: 100%;
    margin: 14px 0;
    font-size: 0.95em;
    background-color: #16162a;
    border-radius: 8px;
    overflow: hidden;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.25);
    border: 1px solid #31314a;
    display: table;
}

.mk14 thead {
    background-color: #1e1e3f;
    border-bottom: 2px solid #c084fc;
    display: table-header-group;
}

.mk14 th {
    border: 1px solid #31314a;
    padding: 12px 14px;
    text-align: left;
    background: linear-gradient(135deg, #1e1e3f 0%, #252550 100%);
    font-weight: 600;
    color: #f8fafc;
}

.mk14 td {
    border: 1px solid #2a2a45;
    padding: 10px 12px;
    text-align: left;
    background-color: #16162a;
    color: #e2e8f0;
    line-height: 1.6;
}

.mk14 tbody { display: table-row-group; }
.mk14 tr { display: table-row; }

.mk14 tbody tr:nth-child(even) { background-color: #1a1a32; }
.mk14 tbody tr:hover { background-color: #22224a; transition: background-color 0.2s ease; }

.mk14 td code, .mk14 th code {
    background-color: #1e1e3f;
    border: 1px solid #31314a;
    padding: 2px 6px;
    border-radius: 4px;
    font-size: 0.9em;
    color: #c084fc;
}

.mk14 td a, .mk14 th a {
    color: #c084fc;
    text-decoration: none;
    border-bottom: 1px dotted #c084fc;
}

.mk14 td a:hover, .mk14 th a:hover { color: #d8b4fe; border-bottom-style: solid; }

/* ==================== KaTeX 数学公式核心样式 ==================== */
/* 行内公式基础 */
.mk14 .katex {
    font: 1.12em KaTeX_Main, 'Times New Roman', 'Microsoft YaHei', serif;
    line-height: 1.3;
    text-indent: 0;
    text-rendering: auto;
    display: inline-block;
    margin: 0 3px;
    color: #f1f5f9;
    vertical-align: middle;
    white-space: nowrap;
}

.mk14 p .katex { margin: 0 3px; vertical-align: baseline; }

.mk14 h1 .katex, .mk14 h2 .katex, .mk14 h3 .katex,
.mk14 h4 .katex, .mk14 h5 .katex, .mk14 h6 .katex {
    font-size: 1em;
    color: #f8fafc;
    margin: 0 3px;
}

.mk14 code .katex, .mk14 pre .katex {
    font-family: KaTeX_Main, 'Times New Roman', 'Microsoft YaHei', serif;
    background: transparent;
    border: none;
    padding: 0;
    box-shadow: none;
    color: #f1f5f9;
}

/* 块级公式容器 */
.mk14 .katex-display {
    display: block;
    margin: 20px 0;
    padding: 18px 16px;
    background: linear-gradient(135deg, rgba(15, 15, 30, 0.7) 0%, rgba(26, 26, 50, 0.5) 100%);
    border-radius: 10px;
    border: 1px solid rgba(192, 132, 252, 0.3);
    border-left: 4px solid #c084fc;
    overflow-x: auto;
    overflow-y: hidden;
    text-align: center;
    box-shadow: 0 2px 12px rgba(0, 0, 0, 0.3);
}

.mk14 .katex-display > .katex {
    display: block;
    margin: 0 auto;
    text-align: center;
    font-size: 1.18em;
    color: #f8fafc;
}

/* KaTeX 隐藏辅助元素 */
.mk14 .katex-mathml {
    position: absolute;
    clip: rect(1px, 1px, 1px, 1px);
    padding: 0;
    border: 0;
    height: 1px;
    width: 1px;
    overflow: hidden;
}

.mk14 .katex-html {
    color: #f1f5f9;
    white-space: nowrap;
}

.mk14 .katex .base {
    position: relative;
    display: inline-block;
    white-space: nowrap;
    width: min-content;
}

.mk14 .katex .strut { display: inline-block; }

/* 文本样式类 */
.mk14 .katex .textbf { font-weight: 700; color: #f8fafc; }
.mk14 .katex .textit { font-style: italic; color: #f1f5f9; }
.mk14 .katex .textrm { font-family: KaTeX_Main, 'Microsoft YaHei', serif; }
.mk14 .katex .textsf { font-family: KaTeX_SansSerif, 'Microsoft YaHei', sans-serif; }
.mk14 .katex .texttt { font-family: KaTeX_Typewriter, 'Monaco', monospace; }

/* 数学字体族 */
.mk14 .katex .mathnormal { font-family: KaTeX_Math, 'Times New Roman', serif; font-style: italic; color: #f1f5f9; }
.mk14 .katex .mathit { font-family: KaTeX_Main, 'Times New Roman', serif; font-style: italic; }
.mk14 .katex .mathrm { font-style: normal; }
.mk14 .katex .mathbf { font-family: KaTeX_Main, 'Microsoft YaHei', serif; font-weight: 700; }
.mk14 .katex .boldsymbol { font-family: KaTeX_Math, 'Times New Roman', serif; font-weight: 700; font-style: italic; }
.mk14 .katex .amsrm, .mk14 .katex .mathbb, .mk14 .katex .textbb { font-family: KaTeX_AMS, 'Microsoft YaHei', serif; }
.mk14 .katex .mathcal { font-family: KaTeX_Caligraphic; }
.mk14 .katex .mathfrak, .mk14 .katex .textfrak { font-family: KaTeX_Fraktur; }
.mk14 .katex .mathboldfrak, .mk14 .katex .textboldfrak { font-family: KaTeX_Fraktur; font-weight: 700; }
.mk14 .katex .mathtt { font-family: KaTeX_Typewriter, monospace; }
.mk14 .katex .mathscr, .mk14 .katex .textscr { font-family: KaTeX_Script; }
.mk14 .katex .mathsf, .mk14 .katex .textsf { font-family: KaTeX_SansSerif, 'Microsoft YaHei', sans-serif; }
.mk14 .katex .mathboldsf, .mk14 .katex .textboldsf { font-family: KaTeX_SansSerif, 'Microsoft YaHei', sans-serif; font-weight: 700; }
.mk14 .katex .mathsfit, .mk14 .katex .textitsfit { font-family: KaTeX_SansSerif, 'Microsoft YaHei', sans-serif; font-style: italic; }
.mk14 .katex .mainit { font-family: KaTeX_Main, 'Times New Roman', serif; font-style: italic; }
.mk14 .katex .mainrm { font-family: KaTeX_Main, 'Times New Roman', serif; font-style: normal; }

/* 数学符号颜色 —— 核心：使用适度特异性，不滥用 !important */
.mk14 .katex .mord { color: #f1f5f9; }
.mk14 .katex .mop { color: #c084fc; }
.mk14 .katex .mrel { color: #d8b4fe; }
.mk14 .katex .mbin { color: #c084fc; }
.mk14 .katex .mnum { color: #f1f5f9; }
.mk14 .katex .mopen, .mk14 .katex .mclose { color: #e2e8f0; }
.mk14 .katex .mpunct { color: #94a3b8; }
.mk14 .katex .minner { color: #f1f5f9; }
.mk14 .katex .mfrac { color: #f1f5f9; }
.mk14 .katex .msup, .mk14 .katex .msub, .mk14 .katex .msubsup { color: #f1f5f9; }
.mk14 .katex .marray { color: #f1f5f9; }

/* 分数样式 */
.mk14 .katex .mfrac { display: inline-block; vertical-align: middle; text-align: center; }
.mk14 .katex .mfrac > span { display: block; }
.mk14 .katex .mfrac .frac-line {
    border-bottom: 1px solid #c084fc;
    margin: 0.1em 0;
}

/* 根号样式 */
.mk14 .katex .sqrt > .root { margin-left: 0.27em; margin-right: -0.55em; }
.mk14 .katex .sqrt > .sqrt-sign { color: #c084fc; }

/* 上下标 */
.mk14 .katex .msupsub { display: inline-block; vertical-align: middle; }
.mk14 .katex .msup { display: inline-block; vertical-align: middle; }
.mk14 .katex .msub { display: inline-block; vertical-align: middle; }

/* 矩阵与表格 */
.mk14 .katex .mtable { display: inline-table; vertical-align: middle; }
.mk14 .katex .mtable .col-align-c { text-align: center; }
.mk14 .katex .mtable .col-align-l { text-align: left; }
.mk14 .katex .mtable .col-align-r { text-align: right; }
.mk14 .katex .arraycolsep { display: inline-block; width: 0.5em; }

/* 括号与定界符 */
.mk14 .katex .delimsizing { display: inline-block; }
.mk14 .katex .delim-size1 { font-size: 1em; }
.mk14 .katex .delim-size2 { font-size: 1.2em; }
.mk14 .katex .delim-size3 { font-size: 1.4em; }
.mk14 .katex .delim-size4 { font-size: 1.7em; }

/* 数学公式字号 */
.mk14 .katex .tiny { font-size: 50%; }
.mk14 .katex .scriptsize { font-size: 70%; }
.mk14 .katex .footnotesize { font-size: 80%; }
.mk14 .katex .small { font-size: 85%; }
.mk14 .katex .normalsize { font-size: 100%; }
.mk14 .katex .large { font-size: 115%; }
.mk14 .katex .Large { font-size: 130%; }
.mk14 .katex .LARGE { font-size: 145%; }
.mk14 .katex .huge { font-size: 175%; }
.mk14 .katex .Huge { font-size: 200%; }

/* 确保公式在不同父元素中颜色正确 */
.mk14 strong .katex, .mk14 b .katex { color: #f8fafc; }
.mk14 em .katex, .mk14 i .katex { font-style: italic; }
.mk14 a .katex { color: #c084fc; }
.mk14 li .katex { display: inline-block; vertical-align: baseline; }
.mk14 td .katex, .mk14 th .katex { display: inline-block; vertical-align: middle; }
.mk14 pre .katex, .mk14 code .katex { color: #f1f5f9; }

/* 块级公式分页保护 */
.mk14 .katex-display {
    break-inside: avoid;
    page-break-inside: avoid;
}

/* ==================== math-render.js 兼容样式（备用渲染）==================== */

/* 行内数学公式 */
.mk14 .math-inline {
    font-family: 'KaTeX_Main', 'Times New Roman', 'Microsoft YaHei', serif;
    font-size: 1.05em;
    color: #f1f5f9;
    background: rgba(192, 132, 252, 0.1);
    padding: 2px 8px;
    border-radius: 5px;
    display: inline;
    white-space: nowrap;
    vertical-align: middle;
    margin: 0 3px;
    border: 1px solid rgba(192, 132, 252, 0.2);
}

/* 块级数学公式 */
.mk14 .math-block {
    font-family: 'KaTeX_Main', 'Times New Roman', 'Microsoft YaHei', serif;
    font-size: 1.15em;
    color: #f8fafc;
    background: linear-gradient(135deg, rgba(15, 15, 30, 0.7) 0%, rgba(26, 26, 50, 0.5) 100%);
    border: 1px solid rgba(192, 132, 252, 0.3);
    border-left: 4px solid #c084fc;
    border-radius: 10px;
    padding: 16px 14px;
    margin: 18px 0;
    display: block;
    text-align: center;
    overflow-x: auto;
    overflow-y: hidden;
    box-shadow: 0 2px 12px rgba(0, 0, 0, 0.3);
}

/* 分数 */
.mk14 .fraction {
    display: inline-flex;
    flex-direction: column;
    align-items: center;
    vertical-align: middle;
    margin: 0 4px;
}

.mk14 .numerator {
    border-bottom: 1px solid #c084fc;
    padding: 1px 6px;
    color: #c084fc;
    font-size: 0.9em;
    line-height: 1.3;
}

.mk14 .denominator {
    padding: 1px 6px;
    color: #c084fc;
    font-size: 0.9em;
    line-height: 1.3;
}

/* 根号 */
.mk14 .sqrt {
    display: inline-block;
    border-top: 1px solid #c084fc;
    border-left: 1px solid #c084fc;
    padding: 3px 6px;
    margin: 0 3px;
    color: #c084fc;
}

/* 上下标 */
.mk14 sup, .mk14 sub { font-size: 0.8em; color: #d8b4fe; }
.mk14 .operator-limit { font-size: 0.75em; color: #d8b4fe; }

/* 希腊字母 */
.mk14 .greek {
    font-family: 'Times New Roman', 'KaTeX_Main', serif;
    font-style: italic;
    color: #c084fc;
    font-size: 1.05em;
}

/* 括号 */
.mk14 .parentheses { color: #d8b4fe; font-weight: normal; }

/* 绝对值 */
.mk14 .abs { color: #f1f5f9; }

/* 范数 */
.mk14 .norm {
    display: inline-flex;
    align-items: baseline;
    vertical-align: middle;
}

.mk14 .norm .abs { position: relative; padding: 0 2px; }
.mk14 .norm .abs::before,
.mk14 .norm .abs::after {
    content: '';
    position: absolute;
    top: 0;
    bottom: 0;
    width: 1.5px;
    background-color: #f1f5f9;
}
.mk14 .norm .abs::before { left: -3px; }
.mk14 .norm .abs::after { right: -3px; }
.mk14 .norm sub { font-size: 0.7em; color: #d8b4fe; vertical-align: sub; }
.mk14 .norm sup { font-size: 0.7em; color: #d8b4fe; vertical-align: super; }

/* 数学重音符号 */
.mk14 .math-accent {
    display: inline-flex;
    align-items: baseline;
    vertical-align: middle;
    margin: 0 1px;
}

.mk14 .accent-hat {
    position: relative;
    display: inline-block;
    padding-top: 0.4em;
    margin-top: 0.3em;
    color: #c084fc;
}
.mk14 .accent-hat::before {
    content: '^';
    position: absolute;
    top: -0.2em;
    left: 50%;
    transform: translateX(-50%);
    font-size: 0.7em;
    color: #c084fc;
}

.mk14 .accent-bar {
    position: relative;
    display: inline-block;
    padding-top: 0.3em;
    border-top: 1px solid #c084fc;
    color: #c084fc;
}

.mk14 .accent-vec {
    position: relative;
    display: inline-block;
    padding-top: 0.4em;
    margin-top: 0.3em;
    color: #c084fc;
}
.mk14 .accent-vec::before {
    content: '→';
    position: absolute;
    top: -0.15em;
    left: 0;
    width: 100%;
    text-align: center;
    font-size: 0.7em;
    color: #c084fc;
}

.mk14 .accent-dot {
    position: relative;
    display: inline-block;
    padding-top: 0.4em;
    margin-top: 0.3em;
    color: #c084fc;
}
.mk14 .accent-dot::before {
    content: '·';
    position: absolute;
    top: -0.1em;
    left: 50%;
    transform: translateX(-50%);
    font-size: 0.8em;
    color: #c084fc;
}

.mk14 .accent-tilde {
    position: relative;
    display: inline-block;
    padding-top: 0.4em;
    margin-top: 0.3em;
    color: #c084fc;
}
.mk14 .accent-tilde::before {
    content: '~';
    position: absolute;
    top: -0.15em;
    left: 0;
    width: 100%;
    text-align: center;
    font-size: 0.7em;
    color: #c084fc;
}

.mk14 .math-accent sub { font-size: 0.75em; color: #d8b4fe; vertical-align: sub; margin-left: 1px; }
.mk14 .math-accent sup { font-size: 0.75em; color: #d8b4fe; vertical-align: super; margin-left: 1px; }

/* 运算符 */
.mk14 .operator {
    font-family: 'Times New Roman', 'KaTeX_Main', serif;
    color: #c084fc;
    margin: 0 2px;
    font-style: normal;
}

/* \text{} 命令内的文本 */
.mk14 .mord.text,
.mk14 .math-inline .mord.text,
.mk14 .math-block .mord.text {
    font-family: 'Times New Roman', 'KaTeX_Main', 'Microsoft YaHei', serif;
    font-style: normal;
    color: #e2e8f0;
    font-size: 0.95em;
    letter-spacing: 0.02em;
}

.mk14 .mord.text .mord { color: #e2e8f0; font-style: normal; }
.mk14 .math-inline .mord.text { background: rgba(192, 132, 252, 0.06); border-radius: 3px; padding: 0 2px; }
.mk14 .math-block .mord.text { font-size: 1em; }

.mk14 sup .mord.text, .mk14 sub .mord.text {
    font-size: 0.9em;
    color: #e2e8f0;
    font-family: 'Microsoft YaHei', 'PingFang SC', sans-serif;
    letter-spacing: 0;
    padding: 0 1px;
    white-space: nowrap;
}

/* 矩阵 */
.mk14 .matrix {
    display: inline-block;
    border-left: 2px solid #c084fc;
    border-right: 2px solid #c084fc;
    padding: 4px 8px;
    margin: 0 4px;
    color: #f1f5f9;
}

/* Python 表达式高亮（math-render.js 输出） */
.mk14 .python-func { color: #ff79c6; font-weight: 600; }
.mk14 .python-var { color: #8be9fd; }
.mk14 .python-num { color: #bd93f9; }
.mk14 .python-string { color: #f1fa8c; }
.mk14 .python-op { color: #ff79c6; margin: 0 2px; }
.mk14 .python-power { color: #ff5555; font-weight: 600; }
.mk14 .python-paren { color: #80deea; }
.mk14 .python-minus { color: #ff5555; }

.mk14 .code-formula {
    display: block;
    margin: 15px 0;
    padding: 14px 16px;
    background: linear-gradient(135deg, #0f0f1e 0%, #1a1a32 100%);
    border: 1px solid rgba(255, 121, 198, 0.3);
    border-left: 4px solid #ff79c6;
    border-radius: 8px;
    font-family: 'Monaco', 'Menlo', 'Ubuntu Mono', 'Consolas', monospace;
    font-size: 1em;
    color: #f8f8f2;
    overflow-x: auto;
    box-shadow: 0 2px 8px rgba(255, 121, 198, 0.1);
    line-height: 1.7;
}

/* ==================== 响应式设计 ==================== */
@media (max-width: 768px) {
    .mk14 { padding: 16px; font-size: 14px; }
    .mk14 table { font-size: 0.85em; }
    .mk14 th, .mk14 td { padding: 8px 10px; }
    .mk14 .katex-display { padding: 12px 10px; margin: 14px 0; font-size: 1em; }
    .mk14 .katex { font-size: 1em; }
    .mk14 .math-block { font-size: 1em; padding: 12px 10px; }
    .mk14 .math-inline { font-size: 0.95em; padding: 2px 6px; }
}

/* ==================== 打印样式 ==================== */
@media print {
    .mk14 {
        background-color: #ffffff;
        color: #000000;
        border-color: #000000;
        box-shadow: none;
    }
    .mk14 table { page-break-inside: avoid; }
    .mk14 .katex, .mk14 .katex-display {
        color: #000000;
        background-color: transparent;
        border-color: #000000;
    }
    .mk14 .katex-display { border-left: 3px solid #000000; }
    .mk14 .math-inline, .mk14 .math-block {
        color: #000000;
        background-color: transparent;
        border-color: #000000;
    }
    .mk14 .math-block { border-left: 3px solid #000000; }
}