:root {
  /* Editorial Brutalism - 纯粹黑白配猩红点缀 */
  --canvas: #FFFFFF;
  --canvas-sec: #FAFAFA;
  --ink: #181818;
  --ink-primary: #000000;
  --ink-faded: #666666;
  --accent: #CC0000;
  --accent-light: #FF3333;
  --border: #DDDDDD;
  --border-strong: #BBBBBB;

  /* 字体系统 */
  --base-font-family: "Source Han Sans SC", "Noto Sans SC", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  --heading-font-family: "Source Serif SC", "Noto Serif SC", "Georgia", "Times New Roman", serif;
  --mono-font-family: "JetBrains Mono", "Fira Code", "SF Mono", Consolas, monospace;
  
  /* 布局常量 */
  --sidebar-width: 280px;
  --content-max-width: 860px;
  
  /* 文档样式变量 */
  --theme-color: var(--accent);
  --link-color: var(--accent);
  --link-text-decoration: none;
  --heading-h1-font-weight: 800;
  --heading-h2-font-weight: 700;
}

/* ==================== 核心重置 ==================== */
* {
  box-sizing: border-box;
}

html {
  scrollbar-color: var(--accent) var(--canvas-sec);
}

body {
  color: var(--ink-primary);
  background: var(--canvas);
  font-family: var(--base-font-family);
  font-size: 16px;
  line-height: 1.75;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

/* ==================== 顶部导航栏 ==================== */
.navbar {
  background: var(--canvas) !important;
  border-bottom: 2px solid var(--ink-primary) !important;
  box-shadow: 0 2px 8px rgba(0,0,0,0.06);
}

.navbar-item a:not(.logo) {
  color: var(--ink-faded) !important;
  font-weight: 500;
  letter-spacing: 0.3px;
}

.navbar-item a:not(.logo):hover,
.navbar-item a:not(.logo).active {
  color: var(--accent) !important;
}

/* ==================== 侧边栏 ==================== */
.sidebar {
  background: var(--canvas-sec) !important;
  border-right: 1px solid var(--border) !important;
}

.sidebar .app-name {
  padding: 28px 20px 24px;
  border-bottom: 2px solid var(--ink-primary);
  background: var(--canvas);
}

.sidebar .app-name-link {
  color: var(--ink-primary);
  font-family: var(--heading-font-family);
  font-size: 22px;
  font-weight: 800;
  letter-spacing: 2px;
  text-transform: uppercase;
  text-decoration: none;
  position: relative;
}

.sidebar .app-name-link::after {
  content: "";
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 40px;
  height: 3px;
  background: var(--accent);
}

.sidebar-nav {
  padding: 16px 0 40px;
}

.sidebar ul li a {
  color: var(--ink-faded);
  border-left: 3px solid transparent;
  font-size: 13.5px;
  font-weight: 450;
  line-height: 1.5;
  padding: 10px 16px;
  transition: all 0.15s ease;
}

.sidebar ul li a:hover,
.sidebar ul li.active > a {
  color: var(--ink-primary);
  background: rgba(204, 0, 0, 0.06);
  border-left-color: var(--accent);
  text-decoration: none;
  font-weight: 500;
}

.sidebar ul li strong {
  color: var(--ink-primary);
  display: block;
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 2px;
  text-transform: uppercase;
  margin: 24px 0 10px;
  padding: 0 16px;
}

/* ==================== 搜索框 ==================== */
.search {
  border-bottom: 1px solid var(--border);
  margin: 0;
  padding: 16px;
  background: var(--canvas);
}

.search input {
  background: var(--canvas-sec);
  border: 1px solid var(--border);
  color: var(--ink-primary);
  font-size: 13px;
  padding: 12px 16px;
  border-radius: 0;
  transition: border-color 0.15s ease;
}

.search input:focus {
  border-color: var(--accent);
  box-shadow: none;
  outline: none;
}

.search input::placeholder {
  color: var(--ink-faded);
}

/* ==================== 主内容区 ==================== */
.markdown-section {
  background: var(--canvas);
  margin: 32px auto 80px;
  max-width: var(--content-max-width);
  padding: 48px 56px;
  position: relative;
}

.markdown-section::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 4px;
  height: 100%;
  background: var(--ink-primary);
}

.markdown-section h1 {
  color: var(--ink-primary);
  font-family: var(--heading-font-family);
  font-size: 36px;
  line-height: 1.25;
  margin-bottom: 28px;
  padding-bottom: 20px;
  border-bottom: 3px solid var(--ink-primary);
  position: relative;
  letter-spacing: -0.5px;
}

.markdown-section h1::after {
  content: "";
  position: absolute;
  bottom: -3px;
  left: 0;
  width: 80px;
  height: 3px;
  background: var(--accent);
}

.markdown-section h1 .anchor {
  color: var(--accent);
}

.markdown-section h1 .anchor:hover {
  color: var(--accent-light);
}

.markdown-section h2 {
  color: var(--ink-primary);
  font-family: var(--heading-font-family);
  font-size: 24px;
  margin-top: 44px;
  margin-bottom: 18px;
  padding-bottom: 10px;
  border-bottom: 1px solid var(--border);
  position: relative;
  padding-left: 16px;
}

.markdown-section h2::before {
  content: "";
  position: absolute;
  left: 0;
  top: 50%;
  transform: translateY(-50%);
  width: 4px;
  height: 24px;
  background: var(--accent);
}

.markdown-section h3 {
  color: var(--ink-primary);
  font-family: var(--heading-font-family);
  font-size: 19px;
  margin-top: 32px;
  margin-bottom: 14px;
  font-weight: 600;
}

.markdown-section h4 {
  color: var(--ink-faded);
  font-size: 15px;
  margin-top: 24px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 1px;
}

.markdown-section p,
.markdown-section li {
  color: var(--ink-faded);
  margin-bottom: 16px;
  line-height: 1.8;
}

.markdown-section li {
  padding-left: 8px;
  position: relative;
}

.markdown-section li::marker {
  color: var(--accent);
  font-size: 0.85em;
}

.markdown-section a {
  color: var(--accent);
  font-weight: 600;
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: border-color 0.15s ease;
}

.markdown-section a:hover {
  color: var(--accent-light);
  border-bottom-color: var(--accent-light);
}

/* ==================== 表格 ==================== */
.markdown-section table {
  border-collapse: separate;
  border-spacing: 0;
  display: table;
  overflow: hidden;
  width: 100%;
  border: 2px solid var(--ink-primary);
  margin: 24px 0;
}

.markdown-section th {
  background: #F5F5F5;
  color: #000000;
  font-weight: 700;
  text-align: left;
  font-size: 13px;
  letter-spacing: 0.5px;
  text-transform: uppercase;
  border-bottom: 2px solid var(--ink-primary);
}

.markdown-section td,
.markdown-section th {
  border-color: var(--border);
  padding: 14px 18px;
  border-bottom: 1px solid var(--border);
  color: var(--ink-primary);
}

.markdown-section tr:nth-child(2n) {
  background: #E8E8E8;
}

.markdown-section tr:last-child td {
  border-bottom: none;
}

/* ==================== 代码块 ==================== */
.markdown-section code {
  background: var(--canvas-sec);
  border: 1px solid var(--border);
  color: var(--accent);
  padding: 0.15em 0.5em;
  font-size: 0.88em;
  font-family: var(--mono-font-family);
  font-weight: 500;
}

.markdown-section pre {
  background: var(--canvas-sec);
  border: 2px solid var(--ink-primary);
  margin: 24px 0;
  position: relative;
}

.markdown-section pre::before {
  content: "CODE";
  position: absolute;
  top: 0;
  right: 0;
  background: var(--ink-primary);
  color: var(--canvas);
  font-size: 9px;
  font-weight: 700;
  letter-spacing: 1px;
  padding: 4px 10px;
}

.markdown-section pre > code {
  background: transparent;
  border: 0;
  color: var(--ink-primary);
  padding: 20px 22px;
  font-size: 13.5px;
  line-height: 1.65;
}

/* ==================== 引用块 ==================== */
.markdown-section blockquote {
  background: var(--canvas-sec);
  border-left: 5px solid var(--accent);
  color: var(--ink-faded);
  margin: 24px 0;
  padding: 18px 22px;
  position: relative;
}

.markdown-section blockquote::before {
  content: '"';
  position: absolute;
  top: -8px;
  left: 18px;
  font-family: var(--heading-font-family);
  font-size: 48px;
  color: var(--accent);
  opacity: 0.3;
  line-height: 1;
}

.markdown-section blockquote p {
  color: var(--ink-faded);
  margin: 0;
}

/* ==================== 分页 ==================== */
.pagination-item a {
  color: var(--accent);
  font-weight: 600;
}

.pagination-item ~ .pagination-item a {
  color: var(--ink-faded);
}

.pagination-item:hover ~ .pagination-item a {
  color: var(--accent);
}

/* ==================== 复制按钮 ==================== */
.docsify-copy-code-button {
  background: var(--ink-primary);
  color: var(--canvas);
  font-size: 10px;
  font-weight: 600;
  letter-spacing: 0.5px;
  border-radius: 0;
  padding: 6px 12px;
}

.docsify-copy-code-button:hover {
  background: var(--accent);
}

/* ==================== 404页面 ==================== */
.not-found-section h1 {
  color: var(--ink-primary);
  font-family: var(--heading-font-family);
}

.not-found-section h1::before {
  content: "404";
  display: block;
  font-size: 120px;
  color: var(--accent);
  line-height: 1;
  margin-bottom: 16px;
}

/* ==================== 移动端适配 ==================== */
@media (max-width: 768px) {
  :root {
    --sidebar-width: 0px;
    --content-max-width: 100%;
  }

  body {
    font-size: 15px;
  }

  .markdown-section {
    border: 0;
    border-left: none;
    margin: 0;
    padding: 32px 20px 60px;
  }

  .markdown-section::before {
    width: 100%;
    height: 4px;
  }

  .markdown-section h1 {
    font-size: 28px;
    padding-bottom: 16px;
  }

  .markdown-section h2 {
    font-size: 21px;
    padding-left: 14px;
  }

  .sidebar {
    background: var(--canvas-sec) !important;
    box-shadow: 4px 0 24px rgba(0, 0, 0, 0.12);
  }

  .navbar {
    padding: 14px 16px !important;
    border-bottom-width: 2px !important;
  }

  .search {
    padding: 14px;
    background: var(--canvas);
  }

  .search input {
    font-size: 15px;
    padding: 12px 14px;
  }

  .markdown-section pre > code {
    font-size: 12.5px;
    padding: 16px 18px;
  }
}

/* ==================== 选中文字 ==================== */
::selection {
  background: rgba(204, 0, 0, 0.2);
  color: var(--ink-primary);
}

/* ==================== 滚动条 ==================== */
::-webkit-scrollbar {
  width: 8px;
  height: 8px;
}

::-webkit-scrollbar-track {
  background: var(--canvas-sec);
}

::-webkit-scrollbar-thumb {
  background: var(--border-strong);
  border-radius: 0;
}

::-webkit-scrollbar-thumb:hover {
  background: var(--ink-faded);
}

/* ==================== 焦点状态 ==================== */
:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

/* ==================== 平滑滚动 ==================== */
html {
  scroll-behavior: smooth;
}