/* --- START OF FILE style.css (FULL RESTORED VERSION) --- */

/* =========================================
   A. 全局重置 & 滚动条美化
   ========================================= */
*, *::before, *::after {
    box-sizing: border-box;
}

/* 全局选中文本样式 (品牌一致性) */
::selection {
    background-color: var(--color-primary);
    color: #ffffff;
}
/* [修复] 代码块内选中：将 rgba(255, 255, 255, 0.2) 修改为半透明品牌色，避免白色背景看不清 */
.post-content pre ::selection {
    background-color: rgba(0, 121, 107, 0.25);
    color: inherit;
}

/* --- 自定义滚动条 --- */
::-webkit-scrollbar {
    width: 8px;
    height: 8px;
}
::-webkit-scrollbar-track {
    background: transparent;
}
::-webkit-scrollbar-thumb {
    background-color: rgba(0, 0, 0, 0.15);
    border-radius: 4px;
}
::-webkit-scrollbar-thumb:hover {
    background-color: var(--color-primary);
}
@media (prefers-color-scheme: dark) {
    ::-webkit-scrollbar-thumb {
        background-color: rgba(255, 255, 255, 0.2);
    }
    /* [修复] 暗色模式下的选中高亮 */
    .post-content pre ::selection {
        background-color: rgba(255, 255, 255, 0.3) !important;
        color: #ffffff !important;
    }
}

/* =========================================
   C. 主题变量
   ========================================= */
:root {
    --color-primary: #00796b; 
    --color-primary-light: #e0f2f1; 
    --color-link-dark: #80cbc4; 
    
    --color-text: #2c3e50; 
    --color-text-secondary: #888; 
    --color-background: #ffffff; 
    --color-card: #ffffff; 
    --color-border: #f0f0f0; 
    
    --color-text-dark: #ededed;
    --color-text-secondary-dark: #888;
    --color-background-dark: #121212; 
    --color-card-dark: #1e1e1e; 
    --color-border-light: #333;
    --color-border-dark: #2a2a2a;

    --color-code-bg: #f8f9fa;
    --color-code-bg-dark: #2c2c2c;
    --color-admonition-note: #00796b;
    --color-admonition-warn: #fbc02d;
    --color-admonition-danger: #d32f2f;

    --color-main-text: var(--color-text);
    --color-main-subtext: var(--color-text-secondary);
    --color-main-background: var(--color-background);
    --color-main-card: var(--color-card);
    --color-main-border: var(--color-border);
    
    --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
    /* [优化] 代码等宽字体族：彻底解决 Windows 宋体问题 */
    --font-mono: 'JetBrains Mono', 'Fira Code', 'Cascadia Code', 'Consolas', 'Segoe UI Mono', 'Liberation Mono', 'Menlo', Monaco, monospace;
}

@media (prefers-color-scheme: dark) {
    :root {
        --color-main-text: var(--color-text-dark);
        --color-main-subtext: var(--color-text-secondary-dark);
        --color-main-background: var(--color-background-dark);
        --color-main-card: var(--color-card-dark);
        --color-main-border: var(--color-border-light);
    }
}

/* =========================================
   E. 基础样式
   ========================================= */
html {
    font-family: var(--font-sans);
    line-height: 1.7; 
    color: var(--color-main-text);
    background-color: var(--color-main-background);
    font-size: 16px;
    scroll-behavior: smooth; 
}

body {
    margin: 0;
    padding: 0;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

a {
    color: var(--color-primary);
    text-decoration: none;
    transition: color 0.2s;
    position: relative; 
    display: inline-block;
    outline: none;
}

/* --- 链接下划线动画优化 --- */
a::after {
    content: '';
    position: absolute;
    width: 100%;
    transform: scaleX(0);
    height: 1px;
    bottom: -2px; /* 下划线稍微远离文字 */
    left: 0;
    background-color: var(--color-primary);
    transform-origin: bottom right;
    transition: transform 0.3s ease-out;
}

a:hover { 
    color: #004d40;
}
a:hover::after {
    transform: scaleX(1);
    transform-origin: bottom left;
}
a:focus {
    outline: 2px solid var(--color-primary); 
    outline-offset: 2px;
    border-radius: 2px;
}

@media (prefers-color-scheme: dark) {
    a { color: var(--color-link-dark); }
    a:hover { color: #b2dfdb; }
    a::after { background-color: var(--color-link-dark); }
}

/* 例外处理 */
header nav a::after, .post-license a::after,
.post-content h1 a::after, .post-content h2 a::after, .post-content h3 a::after,
.tag-badge a::after, .button a::after, .button-secondary a::after,
.archive-link::after { 
    content: none;
}

h1, h2, h3, h4, h5, h6 {
    line-height: 1.25; 
    margin-top: 1.5em;
    margin-bottom: 0.6em;
    font-weight: 700;
    color: var(--color-main-text);
    scroll-margin-top: 90px;
    overflow-wrap: break-word; /* 确保长单词不会撑破布局 */
}
h1 { font-size: 2rem; letter-spacing: -0.02em; line-height: 1.2; }
h2 { font-size: 1.6rem; letter-spacing: -0.01em; }
h3 { font-size: 1.3rem; letter-spacing: 0; }

@media (prefers-color-scheme: dark) {
    h1, h2, h3, h4, h5, h6 { color: #ededed; }
}

.post-content h2 + h3, .post-content h3 + h4 { margin-top: 0.8em; }

ul, ol { padding-left: 20px; margin-bottom: 1.5em; }
li { margin-bottom: 0.4em; }

/* =========================================
   F & G. 布局与头部
   ========================================= */
.container { max-width: 800px; margin: 0 auto; padding: 0 20px; } 

header {
    background-color: rgba(255, 255, 255, 0.95);
    padding: 20px 0;
    position: sticky;
    top: 0;
    z-index: 100;
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--color-main-border);
}
@media (prefers-color-scheme: dark) {
    header { background-color: rgba(18, 18, 18, 0.95); }
}

.header-inner {
    display: flex;
    justify-content: space-between;
    align-items: center;
    max-width: 800px; 
    margin: 0 auto;
    padding: 0 20px;
}

.site-title {
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--color-main-text);
    letter-spacing: -0.01em;
}

header nav { display: flex; align-items: center; }
header nav a {
    margin-left: 20px;
    font-size: 0.9rem;
    color: var(--color-main-subtext);
    padding: 5px 0;
}
header nav a:hover, header nav a.active-nav-link { color: var(--color-main-text); }

/* =========================================
   H. 主内容区域
   ========================================= */
main { flex-grow: 1; padding: 40px 0 80px; }

.main-layout {
    display: flex;
    justify-content: space-between;
    gap: 40px;
    max-width: 800px;
    margin: 0 auto;
    padding: 0 20px;
}
.content-area { flex-grow: 1; max-width: 100%; }

/* =========================================
   I. 目录 (TOC)
   ========================================= */
.toc-area {
    width: 200px;
    flex-shrink: 0;
    position: sticky;
    top: 100px;
    max-height: calc(100vh - 120px);
    overflow-y: auto;
    padding-left: 15px;
    border-left: 1px solid var(--color-main-border);
    font-size: 0.85rem;
}
.toc-area h3 { 
    font-size: 0.8rem; 
    text-transform: uppercase; 
    color: var(--color-main-subtext); 
    margin: 0 0 10px; 
    letter-spacing: 0.05em; 
}
.toc-area ul { list-style: none; padding: 0; margin: 0; }
.toc-area ul ul { padding-left: 15px; border-left: 1px dotted var(--color-main-border); margin: 5px 0; }
.toc-area ul ul ul { padding-left: 15px; border-left: 1px dotted var(--color-main-border); }

.toc-area li a { 
    display: block; 
    padding: 4px 5px; 
    color: var(--color-main-subtext); 
    text-decoration: none; 
    transition: all 0.2s ease;
    line-height: 1.4;
    font-weight: 500;
    outline: none;
    border-radius: 3px;
}
.toc-area > ul > li > a { font-weight: 600; font-size: 0.9rem; color: var(--color-main-text); padding-top: 6px; padding-bottom: 6px; }
.toc-area ul ul a { font-size: 0.85rem; color: var(--color-main-subtext); }

.toc-area li a:hover, .toc-area li a:focus { color: var(--color-primary); background-color: var(--color-primary-light); }

@media (prefers-color-scheme: dark) {
    .toc-area li a:hover, .toc-area li a:focus { color: var(--color-link-dark); background-color: rgba(0, 121, 107, 0.1); }
}

.page-post .toc-area { display: block; }
.page-post .content-area { flex-basis: 75%; max-width: 75%; }
.page-index .toc-area, .page-archive .toc-area, .page-tags .toc-area { display: none; }
.page-index .content-area, .page-archive .content-area, .page-tags .content-area { flex-basis: 100%; max-width: 100%; }

/* --- 移动端目录动画与交互优化 --- */
.mobile-toc {
    display: none; 
    margin-bottom: 30px;
    border: 1px solid var(--color-main-border);
    border-radius: 4px; 
    font-size: 0.9rem;
    transition: border-color 0.2s;
    background-color: var(--color-main-card);
}
.mobile-toc:hover { border-color: var(--color-primary); }

.mobile-toc summary { 
    list-style: none; /* 隐藏默认三角 */
    position: relative;
    padding: 10px 15px; 
    padding-right: 40px; /* 留出右侧图标位置 */
    cursor: pointer; 
    color: var(--color-main-subtext); 
    outline: none;
    transition: color 0.2s;
    font-weight: 500;
}
/* 隐藏 Webkit 默认三角 */
.mobile-toc summary::-webkit-details-marker { display: none; }

/* 自定义右侧动画图标 */
.mobile-toc summary::after {
    content: "+";
    position: absolute;
    right: 15px;
    top: 50%;
    transform: translateY(-50%);
    font-weight: bold;
    font-size: 1.2em;
    transition: transform 0.2s ease;
    color: var(--color-primary);
    line-height: 1;
}

.mobile-toc[open] > summary { 
    border-bottom: 1px solid var(--color-main-border); 
    padding-bottom: 10px; 
    margin-bottom: 10px;
    color: var(--color-main-text);
}
.mobile-toc[open] > summary::after {
    transform: translateY(-50%) rotate(45deg); /* 旋转动画 */
}

.mobile-toc-content { 
    padding: 15px; 
    border-top: none;
}
.mobile-toc-content ul { list-style: none; padding: 0; }
.mobile-toc-content ul ul { padding-left: 15px; border-left: 1px dotted var(--color-main-border); }
.mobile-toc-content a { display: block; padding: 4px 0; color: var(--color-main-text); text-decoration: none;}

/* =========================================
   J. 文章正文 (Content)
   ========================================= */
.post-content p { 
    color: #212121; 
    letter-spacing: 0.005em; 
    line-height: 1.75; 
    margin-bottom: 1.6em; 
    text-align: justify; 
    text-justify: inter-word;
    hyphens: auto;
    -webkit-hyphens: auto;
    -ms-hyphens: auto;
    text-rendering: optimizeLegibility;
}

/* [优化] 限制最佳阅读宽度 (约68字符)，减少眼球扫视疲劳 */
.post-content p, 
.post-content ul, 
.post-content ol {
    max-width: 68ch; 
    margin-left: auto; 
    margin-right: auto;
}
/* 列表内边距调整适配宽度限制 */
.post-content ul, .post-content ol {
    padding-left: 2rem;
    box-sizing: border-box;
}

@media (prefers-color-scheme: dark) {
    .post-content p { color: #ededed; }
}

.post-content h2 + p, .post-content h3 + p, .post-content h4 + p { margin-top: 0.8em; }

/* [优化] 标题锚点提示 (Hover 显示 #) */
.post-content h2, 
.post-content h3 {
    position: relative;
}
.post-content h2::before,
.post-content h3::before {
    content: "#";
    position: absolute;
    left: -1.2em;
    top: 0;
    color: var(--color-primary);
    opacity: 0;
    transition: opacity 0.2s ease, transform 0.2s ease;
    transform: translateX(10px);
    font-weight: 400;
}
.post-content h2:hover::before,
.post-content h3:hover::before {
    opacity: 0.6;
    transform: translateX(0);
}
@media (max-width: 900px) {
    .post-content h2::before, .post-content h3::before { display: none; }
}

/* 列表样式 */
.page-post .post-content ul ul, .page-post .post-content ol ol,
.page-index .post-content ul ul, .page-index .post-content ol ol { 
    padding-left: 15px; border-left: 1px dotted var(--color-main-border); margin-top: 5px; margin-bottom: 5px; 
}

.page-post .post-content ul, .page-post .post-content ol { color: var(--color-primary); }
.page-post .post-content ul li, .page-post .post-content ol li {
    padding: 3px 5px; 
    border-bottom: 1px dashed rgba(0, 0, 0, 0.05);
    margin-bottom: 0.8em;
    color: var(--color-main-text); 
    transition: background-color 0.2s;
    margin-left: -5px; 
    width: calc(100% + 5px); 
}
.page-post .post-content ul li:hover, .page-post .post-content ol li:hover { background-color: rgba(0, 0, 0, 0.015); }
.page-post .post-content ul li:last-child, .page-post .post-content ol li:last-child { border-bottom: none; }
.page-post .post-content ul li::marker, .page-post .post-content ol li::marker { color: var(--color-primary); }

@media (prefers-color-scheme: dark) {
    .page-post .post-content ul li, .page-post .post-content ol li { border-bottom: 1px dashed rgba(255, 255, 255, 0.08); }
    .page-post .post-content ul li::marker, .page-post .post-content ol li::marker { color: var(--color-link-dark); }
    .page-post .post-content ul li:hover, .page-post .post-content ol li:hover { background-color: rgba(255, 255, 255, 0.03); }
}

.post-content img {
    max-width: 100%; height: auto; border-radius: 4px; display: block; margin: 30px auto; 
    border: 1px solid var(--color-main-border);
    transition: transform 0.3s ease, box-shadow 0.3s ease, opacity 0.3s ease;
}
.post-content img:hover { transform: scale(1.01); box-shadow: 0 8px 20px rgba(0, 0, 0, 0.1); }
@media (prefers-color-scheme: dark) {
    /* 暗色模式图片降权 */
    .post-content img { opacity: 0.85; }
    .post-content img:hover { 
        opacity: 1; 
        box-shadow: 0 8px 20px rgba(255, 255, 255, 0.08); 
    }
}

/* --- 图片说明 (Caption) 优化 --- */
.post-content img + em {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 6px;
    text-align: center; 
    font-size: 0.85rem; 
    color: var(--color-main-subtext); 
    font-family: var(--font-sans); 
    font-style: normal;
    border-top: 1px solid var(--color-main-border); 
    border-bottom: 1px solid var(--color-main-border);
    padding: 8px 0; 
    margin-top: -20px; 
    margin-bottom: 30px; 
}
.post-content img + em::before {
    content: "▲"; 
    font-size: 0.6em;
    opacity: 0.6;
}

/* --- 引用块 (Blockquote) 视觉增强 --- */
.post-content blockquote {
    position: relative; 
    border-left: 3px solid var(--color-primary); 
    padding: 15px 20px 15px 40px; 
    margin: 25px 0;
    color: var(--color-main-subtext); 
    font-style: italic;
    background: linear-gradient(to right, rgba(0,121,107,0.05), transparent); 
    box-shadow: inset 0 0 5px rgba(0, 0, 0, 0.03); 
    border-radius: 3px;
}
.post-content blockquote::before {
    content: "“";
    position: absolute;
    top: -5px;
    left: 10px;
    font-size: 3rem;
    color: var(--color-primary);
    opacity: 0.2;
    font-family: serif;
    line-height: 1;
    pointer-events: none;
}
@media (prefers-color-scheme: dark) {
    .post-content blockquote { 
        background: linear-gradient(to right, rgba(255,255,255,0.02), transparent);
        box-shadow: inset 0 0 5px rgba(255, 255, 255, 0.03); 
    }
}

/* [优化] 行内代码应用等宽字体 */
.post-content code:not(pre code) {
    font-family: var(--font-mono);
    color: var(--color-text); font-weight: 500; padding: 2px 4px; border-radius: 4px; 
    font-size: 0.9em;
    border: 1px solid rgba(0, 0, 0, 0.05); background-color: var(--color-code-bg);
}
@media (prefers-color-scheme: dark) {
    .post-content code:not(pre code) { 
        background-color: var(--color-code-bg-dark); color: var(--color-link-dark); border: 1px solid rgba(255, 255, 255, 0.1);
    }
}

/* --- [优化] 代码块 字体与抗锯齿优化 --- */
.post-content pre {
    font-family: var(--font-mono);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    text-rendering: optimizeLegibility;

    position: relative;
    padding: 45px 15px 15px 15px; /* 顶部加高，给标题栏留位 */
    border-radius: 8px; 
    margin: 25px 0; 
    overflow-x: auto; 
    font-size: 0.9rem; 
    border: 1px solid var(--color-main-border);
    transition: box-shadow 0.2s, background-color 0.2s;
    box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.05);
    background-color: var(--color-code-bg);
    
    /* 模拟窗口标题栏背景 */
    background-image: linear-gradient(to bottom, rgba(0,0,0,0.05) 0%, rgba(0,0,0,0.05) 30px, transparent 30px);
    background-size: 100% 100%;
    background-repeat: no-repeat;
}
@media (prefers-color-scheme: dark) {
    .post-content pre { 
        background-color: var(--color-code-bg-dark); 
        box-shadow: 0 4px 6px -1px rgba(255, 255, 255, 0.05); 
        background-image: linear-gradient(to bottom, rgba(255,255,255,0.05) 0%, rgba(255,255,255,0.05) 30px, transparent 30px);
    }
}

/* MacOS 风格红黄绿点 (定位微调) */
.post-content pre::before {
    content: "";
    position: absolute;
    top: 10px; /* 居中于标题栏 */
    left: 16px;
    width: 10px;
    height: 10px;
    border-radius: 50%;
    background: #ff5f56; 
    box-shadow: 20px 0 0 #ffbd2e, 40px 0 0 #27c93f; 
}

/* 右上角显示语言 (默认 CODE) */
.post-content pre::after {
    content: "CODE";
    position: absolute;
    top: 6px;
    right: 15px;
    font-size: 0.75rem;
    font-weight: 700;
    font-family: var(--font-sans);
    color: var(--color-main-subtext);
    opacity: 0.7;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

/* 使用 :has() 根据 code class 显示具体语言 */
.post-content pre:has(code[class*="python"])::after,
.post-content pre:has(code[class*="language-python"])::after { content: "PYTHON"; color: #3572A5; }

.post-content pre:has(code[class*="js"])::after,
.post-content pre:has(code[class*="javascript"])::after,
.post-content pre:has(code[class*="language-javascript"])::after { content: "JS"; color: #f1e05a; }

.post-content pre:has(code[class*="css"])::after,
.post-content pre:has(code[class*="language-css"])::after { content: "CSS"; color: #563d7c; }

.post-content pre:has(code[class*="html"])::after,
.post-content pre:has(code[class*="language-html"])::after { content: "HTML"; color: #e34c26; }

.post-content pre:has(code[class*="bash"])::after,
.post-content pre:has(code[class*="shell"])::after,
.post-content pre:has(code[class*="language-bash"])::after { content: "SHELL"; color: #89e051; }

.post-content pre:has(code[class*="json"])::after,
.post-content pre:has(code[class*="language-json"])::after { content: "JSON"; }

.post-content pre:has(code[class*="sql"])::after,
.post-content pre:has(code[class*="language-sql"])::after { content: "SQL"; }

.post-content pre:hover { box-shadow: 0 6px 12px -2px rgba(0, 0, 0, 0.1); }
@media (prefers-color-scheme: dark) {
    .post-content pre:hover { box-shadow: 0 6px 12px -2px rgba(255, 255, 255, 0.1); }
}

/* --- 表格 UI/UX (表头冻结) --- */
.table-wrapper { 
    width: 100%; 
    overflow-x: auto; 
    margin: 30px 0; 
    border: 1px solid var(--color-main-border); 
    border-radius: 4px; 
    transition: border-color 0.2s, box-shadow 0.2s, background-color 0.2s; 
    outline: none; 
    background-color: var(--color-main-card); 
    box-shadow: 0 1px 3px rgba(0,0,0,0.05); 
}
.table-wrapper:hover { 
    border-color: var(--color-primary); 
    box-shadow: 0 4px 10px rgba(0,0,0,0.08); 
}
.table-wrapper:focus-within { 
    border-color: var(--color-primary); 
    box-shadow: 0 0 0 2px var(--color-primary-light), 0 0 0 4px var(--color-primary); 
}
@media (prefers-color-scheme: dark) {
    .table-wrapper { 
        box-shadow: 0 1px 3px rgba(255, 255, 255, 0.05);
    }
    .table-wrapper:hover {
        border-color: var(--color-link-dark); 
        box-shadow: 0 4px 10px rgba(255, 255, 255, 0.1); 
    }
    .table-wrapper:focus-within {
        border-color: var(--color-link-dark); 
        box-shadow: 0 0 0 2px rgba(0, 121, 107, 0.3), 0 0 0 4px var(--color-link-dark);
    }
}

.post-content table { 
    width: 100%; 
    border-collapse: collapse; 
    font-size: 0.95rem;
    color: var(--color-main-text); 
    border-radius: 4px; 
    overflow: hidden; 
}

.post-content th, .post-content td { 
    padding: 12px 15px; 
    border-bottom: 1px solid var(--color-main-border); 
    text-align: left; 
    line-height: 1.5;
}

.post-content th { 
    background-color: var(--color-primary-light); 
    color: var(--color-primary); 
    font-weight: 700; 
    text-transform: uppercase; 
    font-size: 0.9rem;
    border-bottom: 2px solid var(--color-primary);
    
    /* 表头吸顶 (Sticky Header) */
    position: sticky;
    top: 0;
    z-index: 10; 
    box-shadow: 0 2px 2px -1px rgba(0,0,0,0.1);
}

.post-content tr:nth-child(even) {
    background-color: rgba(0, 0, 0, 0.02); 
}

.post-content tr:last-child td {
    border-bottom: none;
}

.post-content tr:hover:not(:first-child) { 
    background-color: rgba(0, 121, 107, 0.08);
}

@media (prefers-color-scheme: dark) {
    .post-content th { 
        background-color: #1e1e1e; /* 不透明背景 */
        color: var(--color-link-dark); 
        border-bottom: 2px solid var(--color-link-dark); 
        box-shadow: 0 2px 2px -1px rgba(0,0,0,0.3);
    }
    .post-content tr:nth-child(even) {
        background-color: rgba(255, 255, 255, 0.03); 
    }
    .post-content tr:hover:not(:first-child) {
        background-color: rgba(0, 121, 107, 0.25);
    }
}

.admonition { margin: 25px 0; padding: 15px; border: 1px solid var(--color-main-border); border-left-width: 4px; border-radius: 4px; }
.admonition-title { color: var(--color-primary); margin-bottom: 8px; font-weight: 700; font-size: 0.95rem; }
.admonition.note .admonition-title { color: var(--color-admonition-note); }
.admonition.warning .admonition-title { color: var(--color-admonition-warn); }
.admonition.danger .admonition-title { color: var(--color-admonition-danger); }
@media (prefers-color-scheme: dark) {
    .admonition.note .admonition-title { color: var(--color-link-dark); }
}
.admonition.note { border-left-color: var(--color-primary); }
.admonition.warning { border-left-color: var(--color-admonition-warn); }
.admonition.danger { border-left-color: var(--color-admonition-danger); }

.post-content :target {
    background-color: var(--color-primary-light); padding-left: 5px; margin-left: -5px; 
    border-left: 5px solid var(--color-primary); transition: background-color 0.5s ease-out;
}
@media (prefers-color-scheme: dark) {
    .post-content :target { background-color: rgba(0, 121, 107, 0.1); }
}

/* =========================================
   K. 文章页头部元数据 (Post Meta)
   ========================================= */
.page-header h1 {
    margin-top: 0; margin-bottom: 15px; font-size: 2rem; line-height: 1.25;
}
.post-meta {
    font-size: 0.9rem; color: var(--color-main-subtext); margin-bottom: 25px; 
    padding-bottom: 0; border-top: 2px dashed var(--color-main-border); padding-top: 15px;
}
.post-content h2:first-of-type { margin-top: 0.8em; }

.meta-container {
    display: flex; justify-content: flex-start; flex-wrap: wrap; align-items: center; gap: 15px; 
}
.meta-date {
    font-family: var(--font-mono); font-size: 0.9rem; padding: 3px 6px; border-radius: 4px; 
    background-color: var(--color-code-bg); border: 1px solid var(--color-main-border); opacity: 1; 
    display: flex; align-items: center; line-height: 1.2; height: 1.8em; 
}
@media (prefers-color-scheme: dark) {
    .meta-date { background-color: var(--color-code-bg-dark); border-color: var(--color-border-light); }
}

.meta-tags { display: flex; align-items: center; line-height: 1.2; }
.meta-tags .tags-list { display: inline-flex; flex-wrap: wrap; gap: 10px; padding: 0; margin: 0; list-style: none; }
.meta-tags .tags-list li { padding: 0; margin: 0; border-bottom: none; display: flex; align-items: center; line-height: 1.2; }

.meta-tags .tag-badge {
    color: var(--color-main-subtext); text-decoration: none; transition: all 0.2s ease; 
    font-family: var(--font-sans); font-size: 0.9rem; padding: 3px 6px; border-radius: 4px; 
    background-color: var(--color-code-bg); border: 1px solid var(--color-main-border); font-weight: 500;
    display: flex; align-items: center; line-height: 1.2; height: 1.8em; vertical-align: middle; 
}
.meta-tags .tag-badge:hover {
    color: var(--color-primary); background-color: var(--color-primary-light); border-color: var(--color-primary);
}
@media (prefers-color-scheme: dark) {
    .meta-tags .tag-badge { background-color: var(--color-code-bg-dark); border-color: var(--color-border-light); }
    .meta-tags .tag-badge:hover {
        color: var(--color-link-dark); background-color: rgba(0, 121, 107, 0.15); border-color: var(--color-link-dark);
    }
}

/* =========================================
   N. 极简文章列表 (首页/标签页 - 交互增强)
   ========================================= */
.post-list { 
    list-style: none; 
    padding: 0; 
    margin: 0; 
    display: flex;
    flex-direction: column;
}

.post-list-item {
    display: block; 
    position: relative; /* 确保层级 */
    padding: 20px 20px 20px 19px; 
    border-bottom: 1px dashed var(--color-main-border); 
    border-left: none;
    margin-left: -15px; 
    width: calc(100% + 15px);
    background-color: transparent; 
    text-decoration: none;
    color: inherit;
    transition: transform 0.2s cubic-bezier(0.4, 0, 0.2, 1), background-color 0.2s;
    border-radius: 0; 
    box-shadow: none;
}

/* [新增] 使用伪元素模拟左侧高亮条，避免 border 交叉处的缺角 */
.post-list-item::before {
    content: "";
    position: absolute;
    left: 0;
    top: 0;
    bottom: -1px; /* 延伸到底部边框之下，填补缺角 */
    width: 4px;
    background-color: transparent;
    transition: background-color 0.2s;
    z-index: 1;
}

.post-list-item:hover,
.post-list-item:focus { 
    background-color: rgba(0, 0, 0, 0.02); 
    transform: translateX(5px); /* 悬停右移反馈 */
    outline: none;
}

/* [新增] 悬停时改变伪元素颜色 */
.post-list-item:hover::before,
.post-list-item:focus::before {
    background-color: var(--color-primary);
}

/* 文章列表卡片按压效果 */
.post-list-item:active {
    transform: translateX(5px) scale(0.99); 
    background-color: rgba(0,0,0,0.05);
    transition: transform 0.05s;
}

.post-list-item:last-child { border-bottom: none; }

.post-list-item .post-title {
    margin: 0 0 10px 0;
    font-size: 1.6rem; 
    font-weight: 700;
    color: var(--color-main-text);
    line-height: 1.3;
    transition: color 0.2s;
}
.post-list-item:hover .post-title { 
    color: var(--color-primary); 
}

.post-list-meta-line {
    display: flex;
    align-items: center;
    gap: 15px; 
    margin-bottom: 15px;
    font-size: 0.85rem;
    color: var(--color-main-subtext);
}

.post-list-item .meta-date {
    font-family: var(--font-mono);
    opacity: 0.8;
    margin: 0; padding: 0; border: none; background: none; display: inline; height: auto;
}

.post-list-item:hover .meta-date {
    color: var(--color-primary); 
    opacity: 1; 
}

.post-list-item .tags-list {
    display: flex; flex-wrap: wrap; gap: 8px; padding: 0; margin: 0; list-style: none;
}
.post-list-item .tags-list li { padding: 0; margin: 0; border: none; }

.post-list-item .tag-badge {
    font-size: 0.8rem;
    color: var(--color-main-subtext);
    background-color: rgba(0,0,0,0.03); 
    border: none; 
    padding: 2px 6px;
    border-radius: 4px; 
    line-height: 1.2;
    height: auto;
    display: inline-block;
    vertical-align: middle;
}
.post-list-item:hover .tag-badge { 
    color: var(--color-primary);
    background-color: var(--color-primary-light);
}

.post-list-item .post-excerpt {
    color: var(--color-main-subtext); 
    font-size: 1rem;
    line-height: 1.65;
    margin: 0;
    display: -webkit-box;
    -webkit-line-clamp: 3;
    -webkit-box-orient: vertical;
    overflow: hidden;
    font-family: var(--font-sans);
    opacity: 0.9;
}

@media (prefers-color-scheme: dark) {
    .post-list-item:hover,
    .post-list-item:focus {
        background-color: rgba(255, 255, 255, 0.03);
    }
    
    /* [新增] 暗色模式下的伪元素颜色 */
    .post-list-item:hover::before,
    .post-list-item:focus::before {
        background-color: var(--color-link-dark);
    }
    
    .post-list-item:hover .post-title { color: var(--color-link-dark); }
    .post-list-item:hover .meta-date {
        color: var(--color-link-dark); 
    }
    .post-list-item .tag-badge {
        background-color: rgba(255, 255, 255, 0.05);
        color: var(--color-text-secondary-dark);
    }
    .post-list-item:hover .tag-badge {
         color: var(--color-link-dark);
         background-color: rgba(0, 121, 107, 0.2);
    }
}


/* =========================================
   P. 特殊页面样式 (Archive & Tags)
   ========================================= */
.tag-cloud { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 30px; }

.tag-cloud-item {
    display: inline-block;
    padding: 6px 12px;
    background-color: transparent; 
    border: 1px solid var(--color-main-border);
    border-radius: 4px; 
    color: var(--color-main-text);
    text-decoration: none;
    font-size: 0.9rem !important;
    transition: all 0.2s ease;
}
.tag-cloud-item:hover {
    border-color: var(--color-primary);
    color: var(--color-primary);
    background-color: rgba(0,0,0,0.02); 
    transform: translateY(-1px);
}
/* 标签云按压效果 */
.tag-cloud-item:active {
    transform: translateY(1px);
    box-shadow: inset 0 2px 4px rgba(0,0,0,0.1);
}

@media (prefers-color-scheme: dark) {
    .tag-cloud-item:hover { background-color: rgba(255,255,255,0.05); }
}

/* --- Archive 归档页美化 (Timeline 风格) --- */
.archive-page { max-width: 100%; }

.archive-year {
    font-size: 1.8rem;
    margin-top: 2rem;
    margin-bottom: 1rem;
    padding-bottom: 0.5rem;
    border-bottom: 2px solid var(--color-primary-light);
    color: var(--color-main-text);
    display: flex;
    align-items: baseline;
    gap: 10px;
}
.archive-year small {
    font-size: 1rem;
    color: var(--color-main-subtext);
    font-weight: normal;
}
@media (prefers-color-scheme: dark) {
    .archive-year { border-bottom-color: rgba(255, 255, 255, 0.1); }
}

.archive-list {
    list-style: none;
    padding: 0;
    margin: 0 0 2rem 0;
}

.archive-item {
    display: flex;
    align-items: baseline;
    padding: 10px 15px;
    border-bottom: 1px dashed var(--color-main-border);
    transition: background-color 0.2s ease, transform 0.2s ease;
    border-radius: 0; 
    margin-bottom: 5px;
}

.archive-item:hover {
    background-color: rgba(0,0,0,0.02);
    transform: translateX(5px); 
}
/* 归档项按压效果 */
.archive-item:active {
    transform: translateX(5px) scale(0.99);
    transition: transform 0.05s;
}

@media (prefers-color-scheme: dark) {
    .archive-item:hover {
        background-color: rgba(255,255,255,0.03);
    }
}

.archive-date {
    font-family: var(--font-mono); 
    font-size: 0.95rem;
    color: var(--color-main-subtext);
    margin-right: 20px;
    width: 60px; 
    flex-shrink: 0;
    text-align: right;
}

.archive-link {
    font-size: 1.05rem;
    font-weight: 500;
    color: var(--color-main-text);
    text-decoration: none;
    flex-grow: 1;
}

.archive-link:hover {
    color: var(--color-primary);
}
@media (prefers-color-scheme: dark) {
    .archive-link:hover { color: var(--color-link-dark); }
}

@media (max-width: 600px) {
    .archive-item {
        flex-direction: column; 
        align-items: flex-start;
        padding: 12px 10px;
        gap: 2px;
    }
    .archive-date {
        text-align: left;
        font-size: 0.85rem;
        width: auto;
        opacity: 0.8;
    }
    .archive-link {
        font-size: 1rem;
    }
}

/* =========================================
   L. 底部 (Footer)
   ========================================= */
footer {
    padding: 40px 0; margin-top: auto; text-align: center; color: var(--color-main-subtext); 
    font-size: 0.8rem; border-top: 1px solid var(--color-main-border);
}
.footer-content p { margin: 5px 0; }
.footer-links a { 
    color: var(--color-main-subtext); margin: 0 8px; display: inline-block; padding: 2px 6px; 
    border-radius: 4px; background-color: rgba(0, 0, 0, 0.02); transition: all 0.2s ease;
}
.footer-links a:hover { 
    color: var(--color-primary); background-color: rgba(0, 121, 107, 0.08); transform: translateY(-1px);
}
@media (prefers-color-scheme: dark) {
    .footer-links a { background-color: rgba(255, 255, 255, 0.05); }
    .footer-links a:hover { color: var(--color-link-dark); background-color: rgba(255, 255, 255, 0.1); }
}

/* =========================================
   M. 按钮
   ========================================= */
.button {
    display: inline-block; padding: 8px 16px; border-radius: 4px; font-size: 0.9rem; 
    text-decoration: none !important; cursor: pointer; transition: all 0.2s ease;
}
.button-secondary { border: 1px solid var(--color-main-border); color: var(--color-main-subtext); }
.button-secondary:hover {
    border-color: var(--color-primary); color: var(--color-primary); transform: translateY(-1px); 
    box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.05);
}
.button:active, .button-secondary:focus { transform: translateY(1px); box-shadow: none; }
.button-small { padding: 5px 10px; font-size: 0.85rem; }

/* =========================================
   A11Y & Focus
   ========================================= */
.skip-link {
    position: absolute; left: -9999px; z-index: 9999; padding: 10px 15px; 
    background-color: var(--color-primary); color: white; text-decoration: none; top: 10px; 
    border-radius: 4px; font-weight: bold;
}
.skip-link:focus { left: 50%; transform: translateX(-50%); border: 2px solid white; }

a:focus, button:focus, .tag-cloud-item:focus {
    outline: none; outline: 2px solid var(--color-primary); outline-offset: 2px; border-radius: 2px; box-shadow: none;
}
.post-content pre a:focus, .post-content code a:focus { box-shadow: none; outline: 2px dotted currentColor; border-radius: 0; }

/* =========================================
   Z. 响应式布局
   ========================================= */
@media (max-width: 900px) {
    .header-inner { flex-direction: column; align-items: flex-start; gap: 15px; padding: 0 20px; }
    header nav { display: flex; flex-wrap: wrap; margin-left: 0; width: 100%; }
    header nav a { margin-left: 0; margin-right: 20px; padding: 5px 0; }
    .main-layout { flex-direction: column; gap: 30px; }
    .toc-area { display: none !important; }
    .mobile-toc { display: block; }
    .page-post .content-area { flex-basis: 100%; max-width: 100%; }
    h1 { font-size: 1.7rem; }
    .post-list-item .post-title { font-size: 1.4rem; } 
    h1, h2, h3, h4, h5, h6 { scroll-margin-top: 130px; }
    
    .post-list-item { padding: 20px 15px; } 
}

/* =========================================
   Task List
   ========================================= */
.task-list-item { list-style-type: none !important; position: relative; padding-left: 0; }
.task-list-item input[type="checkbox"] { margin: 0 0.5em 0.2em -1.3em; vertical-align: middle; }
.task-list-item label { font-weight: inherit; }
.task-list-item input[type="checkbox"]:disabled { cursor: default; opacity: 0.7; }

/* =========================================
   Q. 文章上/下导航 (交互优化)
   ========================================= */
.post-navigation {
    display: flex; justify-content: space-between; gap: 30px; margin-top: 60px; 
    padding-top: 30px; border-top: 1px solid var(--color-main-border);
}

/* [优化] 底部导航卡片效果 */
.nav-link {
    display: block; flex: 1; padding: 15px; border: 1px solid var(--color-main-border); 
    border-radius: 4px; 
    text-decoration: none !important; 
    overflow: hidden; white-space: nowrap; text-overflow: ellipsis;
    /* 增加卡片阴影和动画 */
    box-shadow: 0 2px 5px rgba(0,0,0,0.03);
    transition: transform 0.2s cubic-bezier(0.4, 0, 0.2, 1), box-shadow 0.2s, border-color 0.2s, background-color 0.2s;
}

.nav-link:hover { 
    transform: translateY(-3px); /* 整体上浮 */
    box-shadow: 0 5px 15px rgba(0,0,0,0.08);
    background-color: var(--color-main-card); 
    border-color: var(--color-primary); 
}

@media (prefers-color-scheme: dark) {
    .nav-link:hover { 
        box-shadow: 0 5px 15px rgba(0,0,0,0.3);
        background-color: var(--color-code-bg-dark); 
    }
}

.nav-link small { display: block; color: var(--color-main-subtext); font-size: 0.8rem; margin-bottom: 5px; font-weight: 500; }
.nav-link h3 {
    font-size: 1.1rem; font-weight: 600; margin: 0; line-height: 1.4; color: var(--color-main-text);
    transition: color 0.2s, transform 0.2s ease-out; scroll-margin-top: 0; overflow: hidden; white-space: nowrap; text-overflow: ellipsis;
}
.nav-link:hover h3 { color: var(--color-primary); }

/* 箭头位移动画 */
.nav-link.nav-prev small { transition: transform 0.2s; }
.nav-link.nav-next small { transition: transform 0.2s; }
.nav-link.nav-prev:hover small { transform: translateX(-5px); }
.nav-link.nav-next:hover small { transform: translateX(5px); }

.nav-link.nav-prev { text-align: left; }
.nav-link.nav-next { text-align: right; }
.nav-link-placeholder { flex: 1; min-width: 10px; } 

@media (max-width: 600px) {
    .post-navigation { flex-direction: column; gap: 15px; margin-top: 40px; padding-top: 20px; }
    .nav-link.nav-next { text-align: left; }
    .nav-link h3 { white-space: normal; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; height: auto; }
    .nav-link small { margin-bottom: 3px; }
}

/* =========================================
   R. 版权声明
   ========================================= */
.post-license {
    margin: 40px 0 0; padding: 15px 25px 15px 20px; border: none; border-left: 4px solid var(--color-primary); 
    border-radius: 0; background-color: var(--color-primary-light); font-size: 0.9rem; color: var(--color-main-subtext); line-height: 1.6;
}
@media (prefers-color-scheme: dark) {
    .post-license { background-color: rgba(0, 121, 107, 0.15); border-left-color: var(--color-link-dark); }
}
.post-license p { margin: 5px 0; padding: 0; }
.post-license a { text-decoration: underline; }
.license-icon i {
    display: inline-block; font-style: normal; font-weight: 700; margin-right: 2px; padding: 0 4px; 
    border: 1px solid var(--color-primary); border-radius: 3px; color: var(--color-primary); font-size: 0.85em; 
    line-height: 1.5; vertical-align: middle; transition: all 0.2s;
}
@media (prefers-color-scheme: dark) {
    .license-icon i { border-color: var(--color-link-dark); color: var(--color-link-dark); }
    .post-license a:hover .license-icon i { background-color: var(--color-link-dark); color: var(--color-background-dark); }
}
.post-license a:hover .license-icon i { background-color: var(--color-primary); color: var(--color-background); }
.license-format-code {
    margin-top: 10px; padding: 8px 12px; border-radius: 4px; overflow-x: auto; font-size: 0.9em; 
    color: var(--color-main-text); background-color: var(--color-code-bg);
}
@media (prefers-color-scheme: dark) {
    .license-format-code { background-color: var(--color-code-bg-dark); }
}
@media (max-width: 600px) {
    .post-license { padding: 15px; margin: 30px 0 0; }
}

/* =========================================
   Z1. Pygments 代码高亮颜色 (Tango & Monokai)
   ========================================= */
.highlight .hll { background-color: #ffffcc }
.highlight .c { color: #8f5902; font-style: italic }
.highlight .err { color: #a40000; border: 1px solid #ef2929 }
.highlight .g { color: #000000 }
.highlight .k { color: #204a87; font-weight: bold }
.highlight .l { color: #000000 }
.highlight .n { color: #000000 }
.highlight .o { color: #980088 }
.highlight .x { color: #000000 }
.highlight .p { color: #000000; font-weight: bold }
.highlight .cm { color: #8f5902; font-style: italic }
.highlight .cp { color: #008f8f }
.highlight .c1 { color: #8f5902; font-style: italic }
.highlight .cs { color: #8f5902; font-style: italic }
.highlight .gd { color: #a40000 }
.highlight .ge { color: #000000; font-style: italic }
.highlight .gr { color: #a40000 }
.highlight .gh { color: #000080; font-weight: bold }
.highlight .gi { color: #008f00 }
.highlight .go { color: #000000; font-style: italic }
.highlight .gp { color: #8f5902; font-weight: bold }
.highlight .gs { color: #000000; font-weight: bold }
.highlight .gu { color: #000080; font-weight: bold }
.highlight .gt { color: #a40000 }
.highlight .kc { color: #204a87; font-weight: bold }
.highlight .kd { color: #204a87; font-weight: bold }
.highlight .kn { color: #204a87; font-weight: bold }
.highlight .kp { color: #204a87; font-weight: bold }
.highlight .kr { color: #204a87; font-weight: bold }
.highlight .kt { color: #4040a0; font-weight: bold }
.highlight .ld { color: #000000 }
.highlight .m { color: #0000cf; font-weight: bold }
.highlight .s { color: #4e9a06 }
.highlight .na { color: #c4a000 }
.highlight .nb { color: #000000 }
.highlight .nc { color: #000000; font-weight: bold }
.highlight .no { color: #8f5902 }
.highlight .nd { color: #8f5902 }
.highlight .ni { color: #204a87 }
.highlight .ne { color: #cc0000; font-weight: bold }
.highlight .nf { color: #000000 }
.highlight .nl { color: #000000 }
.highlight .nn { color: #000000; font-weight: bold }
.highlight .nx { color: #000000 }
.highlight .py { color: #000000 }
.highlight .nt { color: #204a87; font-weight: bold }
.highlight .nv { color: #000000 }
.highlight .ow { color: #000000; font-weight: bold }
.highlight .w { color: #f8f8f8; text-decoration: underline }
.highlight .mf { color: #0000cf; font-weight: bold }
.highlight .mh { color: #0000cf; font-weight: bold }
.highlight .mi { color: #0000cf; font-weight: bold }
.highlight .mo { color: #0000cf; font-weight: bold }
.highlight .sb { color: #4e9a06 }
.highlight .sc { color: #4e9a06 }
.highlight .sd { color: #4e9a06 }
.highlight .s2 { color: #4e9a06 }
.highlight .se { color: #4e9a06 }
.highlight .sh { color: #4e9a06 }
.highlight .si { color: #4e9a06 }
.highlight .sx { color: #4e9a06 }
.highlight .sr { color: #4e9a06 }
.highlight .s1 { color: #4e9a06 }
.highlight .ss { color: #4e9a06 }
.highlight .bp { color: #3465a4 }
.highlight .vc { color: #000000 }
.highlight .vg { color: #000000 }
.highlight .vi { color: #000000 }
.highlight .il { color: #0000cf; font-weight: bold }

@media (prefers-color-scheme: dark) {
    .highlight { color: #f8f8f2 !important; background: transparent !important; }
    .highlight pre { 
        background: transparent !important; 
        font-family: var(--font-mono) !important; /* [优化] 强制应用等宽字体 */
    }
    .highlight .hll { background-color: #49483a }
    .highlight .c { color: #75715e }
    .highlight .err { color: #960050; background-color: #1e0010 }
    .highlight .k { color: #66d9ef }
    .highlight .l { color: #ae81ff }
    .highlight .n { color: #f8f8f2 }
    .highlight .o { color: #f92672 }
    .highlight .p { color: #f8f8f2 }
    .highlight .cm { color: #75715e }
    .highlight .cp { color: #75715e }
    .highlight .c1 { color: #75715e }
    .highlight .cs { color: #75715e }
    .highlight .ge { font-style: italic }
    .highlight .gs { font-weight: bold }
    .highlight .kc { color: #66d9ef }
    .highlight .kd { color: #66d9ef }
    .highlight .kn { color: #f92672 }
    .highlight .kp { color: #66d9ef }
    .highlight .kr { color: #66d9ef }
    .highlight .kt { color: #66d9ef }
    .highlight .ld { color: #ae81ff }
    .highlight .m { color: #ae81ff }
    .highlight .s { color: #e6db74 }
    .highlight .na { color: #a6e22e }
    .highlight .nb { color: #f8f8f2 }
    .highlight .nc { color: #a6e22e }
    .highlight .no { color: #66d9ef }
    .highlight .nd { color: #a6e22e }
    .highlight .ni { color: #f8f8f2 }
    .highlight .ne { color: #a6e22e }
    .highlight .nf { color: #a6e22e }
    .highlight .nl { color: #f8f8f2 }
    .highlight .nn { color: #f8f8f2 }
    .highlight .nx { color: #f8f8f2 }
    .highlight .py { color: #f8f8f2 }
    .highlight .nt { color: #f92672 }
    .highlight .nv { color: #f8f8f2 }
    .highlight .ow { color: #f92672 }
    .highlight .w { color: #f8f8f2 }
    .highlight .mf { color: #ae81ff }
    .highlight .mh { color: #ae81ff }
    .highlight .mi { color: #ae81ff }
    .highlight .mo { color: #ae81ff }
    .highlight .sb { color: #e6db74 }
    .highlight .sc { color: #e6db74 }
    .highlight .sd { color: #e6db74 }
    .highlight .s2 { color: #e6db74 }
    .highlight .se { color: #ae81ff }
    .highlight .sh { color: #e6db74 }
    .highlight .si { color: #e6db74 }
    .highlight .sx { color: #e6db74 }
    .highlight .sr { color: #e6db74 }
    .highlight .s1 { color: #e6db74 }
    .highlight .ss { color: #e6db74 }
    .highlight .bp { color: #f8f8f2 }
    .highlight .vc { color: #f8f8f2 }
    .highlight .vg { color: #f8f8f2 }
    .highlight .vi { color: #f8f8f2 }
    .highlight .il { color: #ae81ff }
    .highlight .gu { color: #75715e }
    .highlight .gd { color: #f92672 }
    .highlight .gi { color: #a6e22e }
}

/* =========================================
   Z2. 打印样式 (Print Styles)
   ========================================= */
@media print {
    /* 隐藏无关元素 */
    header, footer, .toc-area, .skip-link, .post-navigation, .mobile-toc {
        display: none !important;
    }

    /* 重置容器宽度 */
    .container, .main-layout, .content-area {
        width: 100% !important;
        max-width: 100% !important;
        margin: 0 !important;
        padding: 0 !important;
        display: block !important;
    }

    /* 优化文字颜色为纯黑，节省墨水 */
    body, h1, h2, h3, p, li {
        color: #000 !important;
        background: #fff !important;
    }

    /* 代码块优化 */
    .post-content pre {
        border: 1px solid #ccc;
        white-space: pre-wrap; 
        page-break-inside: avoid;
        padding-top: 15px; /* 打印时移除 MacOS 红绿灯上方的额外空间 */
        font-family: var(--font-mono) !important;
    }
    .post-content pre::before {
        display: none; /* 打印时不显示红绿灯 */
    }
    .post-content pre::after {
        display: none; /* 打印时不显示语言标签 */
    }

    /* 链接显示 URL */
    .post-content a::after {
        content: " (" attr(href) ")";
        font-size: 0.8em;
        text-decoration: none;
        color: #555;
    }
    
    a::after { transform: none !important; }
}
   /* =========================================
   Z3. 404 Error Page Styles (Added)
   ========================================= */

/* 针对 404 页面布局的特殊处理 */
.page-404 .content-area {
    /* 让内容区域在视觉上居中，但保留页眉页脚 */
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 50vh; /* 确保有足够的高度来居中 */
}

.page-404 .post-content {
    /* 移除默认的文章边距，使其完全居中 */
    width: 100%;
    max-width: 100%;
}

/* 404 容器 */
.error-container {
    text-align: center;
    padding: 40px 20px;
    animation: fadeIn 0.8s ease-out;
}

/* 巨大的数字 404 */
.error-code {
    font-family: var(--font-mono); /* 使用您网站的代码字体 */
    font-size: 8rem;
    font-weight: 700;
    line-height: 1;
    color: var(--color-primary);
    margin-bottom: 20px;
    position: relative;
    display: inline-block;
    
    /* 纯 CSS 阴影效果 */
    text-shadow: 4px 4px 0px rgba(0, 121, 107, 0.15);
}

/* 装饰性分割线 */
.error-divider {
    width: 60px;
    height: 4px;
    background-color: var(--color-main-border);
    margin: 20px auto;
    border-radius: 2px;
}

/* 错误主标题 */
.error-message {
    font-size: 1.8rem;
    font-weight: 700;
    color: var(--color-main-text);
    margin: 0 0 15px 0;
    letter-spacing: -0.02em;
}

/* 错误描述文本 */
.error-desc {
    font-size: 1.1rem;
    color: var(--color-main-subtext);
    margin-bottom: 40px;
    line-height: 1.6;
}

/* 按钮样式微调 (复用现有的 .button) */
.error-container .button {
    padding: 12px 30px;
    font-size: 1rem;
    background-color: var(--color-primary);
    color: #fff;
    border-radius: 50px; /* 圆角更圆润一点 */
    box-shadow: 0 4px 15px rgba(0, 121, 107, 0.3);
    transition: transform 0.2s, box-shadow 0.2s, background-color 0.2s;
}

.error-container .button:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(0, 121, 107, 0.4);
    background-color: #00695c; /* 深一点的主题色 */
}

.error-container .button:active {
    transform: translateY(0);
}

/* 简单的淡入动画 */
@keyframes fadeIn {
    from { opacity: 0; transform: translateY(20px); }
    to { opacity: 1; transform: translateY(0); }
}

/* --- 暗色模式适配 --- */
@media (prefers-color-scheme: dark) {
    .error-code {
        color: var(--color-link-dark);
        text-shadow: 4px 4px 0px rgba(0, 0, 0, 0.5);
    }
    
    .error-container .button {
        background-color: var(--color-link-dark);
        color: var(--color-background-dark);
        box-shadow: 0 4px 15px rgba(128, 203, 196, 0.2);
    }
    
    .error-container .button:hover {
        background-color: #b2dfdb;
        box-shadow: 0 6px 20px rgba(128, 203, 196, 0.3);
    }
}

/* 移动端适配 */
@media (max-width: 600px) {
    .error-code {
        font-size: 5rem;
    }
    .error-message {
        font-size: 1.4rem;
    }
}
/* --- END OF FILE style.css --- */