:root {
  color-scheme: light;
  --font-sans: ui-sans-serif, system-ui, sans-serif, "Apple Color Emoji",
    "Segoe UI Emoji", "Segoe UI Symbol", "Noto Color Emoji";
  --font-mono: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas,
    "Liberation Mono", "Courier New", monospace;

  /* 浅色主题配色 */
  --bg: #f5f5f5;
  --bg-alt: #f1f1f1;
  --text: #0a0a0a;
  --muted: #737373;
  --subtle: #9e9e9e;
  --primary: #171717;
  --primary-soft: #ededed;
  --primary-strong: #d1d1d1;
  --border: rgba(158, 158, 158, 0.2);
  --border-strong: rgba(158, 158, 158, 0.4);
  --shadow: 0 1px 2px rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.05);
  --shadow-lg: 0 10px 15px rgba(0, 0, 0, 0.1);
  --border-bottom: #1f66f4;

  /* 布局变量 */
  --sidebar-width: 300px;
  --header-height: 64px;

  /* 圆角变量 */
  --radius-sm: 0.25rem;
  --radius-md: 0.375rem;
  --radius-lg: 0.5rem;
  --radius-xl: 0.75rem;

  /* 过渡动画 */
  --transition: all 0.15s cubic-bezier(0.4, 0, 0.2, 1);
  --linkColor: #36c;
}

/* 深色模式 */
html[data-theme="dark"] {
  color-scheme: dark;

  /* 深色主题配色 */
  --bg: #0a0a0a;
  --bg-alt: #171717;
  --text: #fafafa;
  --muted: #a3a3a3;
  --subtle: #737373;
  --primary: #fafafa;
  --primary-soft: #262626;
  --primary-strong: #404040;
  --border: rgba(163, 163, 163, 0.2);
  --border-strong: rgba(163, 163, 163, 0.4);
  --shadow: 0 1px 2px rgba(0, 0, 0, 0.3);
  --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.3);
  --shadow-lg: 0 10px 15px rgba(0, 0, 0, 0.4);
  --linkColor: #88a3e8;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: var(--font-sans);
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
  font-size: 15px;
  transition: var(--transition);
}

a {
  color: var(--primary);
  text-decoration-color: var(--border-bottom);
  text-decoration: none;
  transition: var(--transition);
  font-size: 0.85rem;
  /* 去除a标签点击时的背景色 */
  -webkit-tap-highlight-color: transparent;
}

a:hover {
  color: var(--primary);
  text-decoration-color: var(--border-bottom);
  text-decoration: none;
}
h2 a {
  font-size: 1.3rem;
}

/* 主容器布局 */
.site-container {
  display: flex;
  min-height: 100vh;
}

/* 左侧边栏 */
.sidebar {
  width: var(--sidebar-width);
  background: var(--bg-alt);
  border-right: 1px solid var(--border);
  position: fixed;
  top: 0;
  left: 0;
  height: 100vh;
  overflow-y: auto;
  z-index: 100;
  transition: var(--transition);
  display: flex;
  flex-direction: column;
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
}

.sidebar-header {
  padding: 2rem 1.5rem 1rem;
  border-bottom: 1px solid var(--border);
}

.brand {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  margin-bottom: 0.75rem;
}

.brand-logo {
  width: 44px;
  height: 44px;
  border-radius: var(--radius-md);
  object-fit: cover;
  box-shadow: var(--shadow);
  transition: var(--transition);
}

.brand-logo:hover {
  transform: scale(1.05);
}

.brand-title {
  font-size: 1.375rem;
  font-weight: 700;
  color: var(--text);
  margin: 0;
  letter-spacing: -0.02em;
}

.brand-description {
  margin-top: 0.5rem;
}

.brand-description p {
  margin: 0;
  color: var(--muted);
  font-size: 0.9rem;
  line-height: 1.5;
  font-weight: 400;
}

/* 侧边栏导航 */
.sidebar-nav {
  padding: 1.5rem;
  flex: 1;
}

.nav-section {
  margin-bottom: 1.5rem;
}

.nav-section-title {
  font-size: 0.875rem;
  font-weight: 700;
  color: var(--text);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin: 0 0 1rem 0;
}

.nav-list,
.sub-nav-list {
  list-style: none;
  padding: 0;
  margin: 0;
}
.sub-nav-list {
  margin-left: 30px;
}
.sub-nav-list li {
  margin-bottom: 0.25rem;
}
.sub-nav-list li a {
  color: var(--linkColor);
}
.sub-nav-list li a:hover {
  text-decoration: underline;
}

.nav-list li {
  margin-bottom: 0.25rem;
}

.nav-link {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.625rem 0.875rem;
  border-radius: var(--radius-md);
  color: var(--text);
  font-weight: 500;
  transition: var(--transition);
  text-decoration: none;
  font-size: 0.95rem;
}

.nav-link:hover {
  background: var(--primary-soft);
  color: var(--muted);
  text-decoration: none;
}

.nav-count {
  font-size: 0.8rem;
  color: var(--muted);
  font-weight: 400;
}

/* 标签云 */
.tag-cloud {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.tag-link {
  display: inline-block;
  padding: 0.375rem 0.75rem;
  background: var(--primary-soft);
  color: var(--primary);
  border-radius: var(--radius-lg);
  font-size: 0.85rem;
  font-weight: 500;
  transition: var(--transition);
  text-decoration: none;
  border: 1px solid var(--border);
}

.tag-link:hover {
  background: var(--primary);
  color: var(--bg);
  text-decoration: none;
  transform: translateY(-1px);
  border-color: var(--primary);
}

/* 标签数量样式 */
.tag-count {
  font-size: 0.75rem;
  color: var(--muted);
  font-weight: 400;
  margin-left: 0.25rem;
}

/* 侧边栏底部 */
.sidebar-footer {
  padding: 0.5rem 1rem;
  border-top: 1px solid var(--border);
  display: flex;
  justify-content: flex-end;
}

/* 主题切换开关 */
.theme-switch {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  cursor: pointer;
  user-select: none;
  padding: 0.5rem;
  border-radius: var(--radius-md);
  transition: var(--transition);
}

.theme-switch input {
  position: absolute;
  opacity: 0;
  pointer-events: none;
}

.switch-track {
  width: 48px;
  height: 24px;
  border-radius: 12px;
  background: var(--border);
  display: flex;
  align-items: center;
  padding: 2px;
  transition: var(--transition);
  position: relative;
}

.switch-thumb {
  width: 20px;
  height: 20px;
  border-radius: 50%;
  background: var(--bg-alt);
  transition: var(--transition);
  box-shadow: var(--shadow);
}

.theme-switch input:checked + .switch-track .switch-thumb {
  transform: translateX(24px);
}

.switch-label {
  font-size: 0.9rem;
  color: var(--text);
  font-weight: 500;
}

/* 图标滑块样式 */
.switch-thumb {
  width: 20px;
  height: 20px;
  border-radius: 50%;
  background: var(--bg-alt);
  transition: var(--transition);
  box-shadow: var(--shadow);
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  overflow: hidden;
}

.switch-thumb svg {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  transition: var(--transition);
  opacity: 0;
  width: 12px;
  height: 12px;
}

.switch-thumb .sun-icon {
  opacity: 1;
}

.theme-switch input:checked + .switch-track .switch-thumb .sun-icon {
  opacity: 0;
}

.theme-switch input:checked + .switch-track .switch-thumb .moon-icon {
  opacity: 1;
}

/* 主内容区域 */
.main-content {
  flex: 1;
  margin-left: var(--sidebar-width);
  min-height: 100vh;
  background: var(--bg);
  overflow: hidden;
}

.content-wrapper {
  margin: 0 auto;
  padding: 3rem 2rem;
}

@media (min-width: 1280px) {
  .content-wrapper {
    max-width: 90%;
    padding: 3rem 5%;
  }
}

/* 页面头部 */
.page-header {
  margin-bottom: 2rem;
  text-align: center;
}

.page-title {
  font-size: 1.875rem;
  font-weight: 800;
  color: var(--text);
  margin: 0 0 1rem 0;
  line-height: 1.1;
  letter-spacing: -0.02em;
  background: linear-gradient(135deg, var(--text) 0%, var(--primary) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.page-meta {
  display: flex;
  justify-content: center;
  gap: 1.5rem;
  font-size: 0.95rem;
  color: var(--muted);
  font-weight: 500;
}

/* 文章列表 */
.post-list {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.post-card {
  background: transparent;
  border: none;
  border-radius: 10px;
  padding: 1.5rem;
  transition: var(--transition);
  box-shadow: none;
  position: relative;
  overflow: hidden;
  border-bottom: 1px solid var(--border);
  cursor: pointer;
  -webkit-tap-highlight-color: transparent;
  -webkit-touch-callout: none;
  -webkit-user-select: none;
  user-select: none;
}
.post-card:hover {
  background: var(--primary-soft);
  border-bottom-color: var(--primary);
}

/* 移动端触摸优化 */
@media (hover: none) and (pointer: coarse) {
  .post-card {
    cursor: pointer;
  }

  .post-card:active,
  .post-card.touch-active {
    background: var(--primary-soft);
    border-bottom-color: var(--primary);
    transform: scale(0.98);
    transition: transform 0.1s ease;
  }
}

.post-header {
  margin-bottom: 0.75rem;
}

.post-title {
  font-size: 1.375rem;
  font-weight: 600;
  margin: 0 0 0.5rem 0;
  line-height: 1.3;
  letter-spacing: -0.01em;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.badge-pinned {
  font-size: 1rem;
}

.post-title a {
  color: var(--text);
  text-decoration: none;
  transition: var(--transition);
}
h1.post-title {
  text-align: center;
}

.post-title a:hover {
  color: var(--primary);
  text-decoration: none;
}

.post-meta {
  display: flex;
  align-items: center;
  gap: 0.7rem;
  font-size: 0.85rem;
  color: var(--muted);
  flex-wrap: wrap;
}
.post-meta-other {
  margin: 0;
  color: var(--muted);
  display: flex;
  gap: 0.5rem;
  flex-wrap: wrap;
  font-size: 0.95rem;
  align-items: center;
}

.post-date::before {
  content: "📅";
  font-size: 0.9em;
}

.post-category a::before {
  content: "📂";
  font-size: 0.9em;
}

.post-category a:hover,
.post-tags a:hover {
  text-decoration: underline;
  text-decoration-color: var(--border-bottom);
  text-underline-offset: 5px;
  text-decoration-thickness: 1.5px;
  opacity: 0.8;
}

/* 修复移动端点击后下划线保持显示的问题 */
.post-category a:active,
.post-tags a:active,
.post-category a:focus,
.post-tags a:focus {
  text-decoration: none;
}

/* 针对触摸设备的优化 */
@media (hover: none) and (pointer: coarse) {
  .post-category a:hover,
  .post-tags a:hover {
    text-decoration: none;
  }

  .post-category a:active,
  .post-tags a:active {
    text-decoration: underline;
    text-decoration-color: var(--border-bottom);
    text-underline-offset: 5px;
    text-decoration-thickness: 1.5px;
    opacity: 0.8;
  }
}
.post-tags a::before {
  content: "🏷️";
  font-size: 0.9em;
}

.post-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.3rem;
  font-weight: 500;
}

.post-tag {
  display: inline-block;
  padding: 0.375rem 0.75rem;
  background: var(--primary-soft);
  color: var(--primary);
  border-radius: var(--radius-lg);
  font-size: 0.85rem;
  font-weight: 500;
  text-decoration: none;
  transition: var(--transition);
  border: 1px solid var(--border);
}

.post-tag:hover {
  background: var(--primary);
  color: var(--bg);
}

.post-excerpt {
  color: var(--muted);
  line-height: 1.6;
  font-size: 1rem;
}
.post-excerpt p {
  margin: 0;
}

.post-footer {
  display: none;
}

.read-more {
  display: none;
}

/* 文章详情页 */
.post-detail {
  overflow: hidden;
}

.post-detail .post-header {
  margin-bottom: 2rem;
  position: relative;
  padding-bottom: 1.5rem;
  border-bottom: 1px solid var(--border);
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.post-detail .post-breadcrumb {
  display: flex;
  align-items: center;
  gap: 0.3rem;
  font-size: 0.9rem;
  color: var(--muted);
  margin-bottom: 1rem;
}
.post-breadcrumb a {
  font-size: 0.9rem;
}

.post-detail .breadcrumb-separator {
  color: var(--border);
}

.post-detail .post-breadcrumb a {
  color: var(--muted);
  transition: var(--transition);
}

.post-detail .post-breadcrumb a:hover {
  color: var(--primary);
}

.post-detail .post-title {
  font-size: 2.25rem;
  font-weight: 700;
  margin: 0;
  line-height: 1.2;
  letter-spacing: -0.02em;
  color: var(--text);
}

.post-detail .post-meta {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.85rem;
  color: var(--muted);
  flex-wrap: wrap;
}

.post-detail .post-date::before {
  content: "📅";
  font-size: 0.9em;
}

.post-detail .post-category {
  font-weight: 500;
}

.post-detail .post-category a:hover,
.post-detail .post-tags a:hover {
  text-decoration: underline;
  text-decoration-color: var(--border-bottom);
  text-underline-offset: 5px;
  text-decoration-thickness: 1.5px;
  opacity: 0.8;
}

/* 修复移动端点击后下划线保持显示的问题 */
.post-detail .post-category a:active,
.post-detail .post-tags a:active,
.post-detail .post-category a:focus,
.post-detail .post-tags a:focus {
  text-decoration: none;
}

/* 针对触摸设备的优化 */
@media (hover: none) and (pointer: coarse) {
  .post-detail .post-category a:hover,
  .post-detail .post-tags a:hover {
    text-decoration: none;
  }

  .post-detail .post-category a:active,
  .post-detail .post-tags a:active {
    text-decoration: underline;
    text-decoration-color: var(--border-bottom);
    text-underline-offset: 5px;
    text-decoration-thickness: 1.5px;
    opacity: 0.8;
  }
}

.post-detail .post-category a::before {
  content: "📂";
  font-size: 0.9em;
}

.post-detail .post-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.3rem;
}

.breadcrumb-separator {
  color: var(--subtle);
}

/* 目录 */
.post-toc {
  padding: 1.25rem;
  margin: 1.5rem 0;
}

/* 在1280px以上屏幕，目录导航显示在右侧 */
@media (min-width: 1280px) {
  .post-layout {
    display: grid;
    grid-template-columns: minmax(0, 1fr);
    gap: 2rem;
    align-items: start;
    position: relative;
  }

  /* 有目录时使用两列布局 */
  .post-layout:has(.post-toc) {
    grid-template-columns: minmax(0, 6fr) minmax(0, 2fr);
  }

  .post-toc {
    position: fixed;
    top: 3rem;
    right: 2rem;
    width: calc(20% - 2rem);
    max-width: 300px;
    margin: 0;
    min-height: calc(100vh - 4rem);
    z-index: 10;
    display: flex;
    flex-direction: column;
  }

  /* 没有目录时 文章内容占据全部宽度 */
  .post-layout:not(:has(.post-toc)) .post-detail {
    max-width: none;
    width: 100%;
  }
}

/* 在1280px以下屏幕，隐藏目录导航 */
@media (max-width: 1279px) {
  .post-toc {
    display: none;
  }
}

.toc-title {
  font-size: 1rem;
  font-weight: 600;
  margin: 0 0 0.75rem 0;
  color: var(--text);
}

.toc-nav {
  display: flex;
  flex: 1;
  flex-direction: column;
  gap: 0;
  position: relative;
  min-height: 0;
  overflow: auto;
  mask-image: linear-gradient(
    to bottom,
    transparent,
    white 16px,
    white calc(100% - 16px),
    transparent
  );
  padding: 0.75rem 0;
}

.toc-nav::-webkit-scrollbar {
  display: none;
}

.toc-link {
  display: flex;
  align-items: center;
  padding: 0.375rem 0;
  color: var(--muted);
  text-decoration: none;
  font-size: 0.875rem;
  transition: color 0.3s ease;
  position: relative;
  background: transparent;
  overflow-wrap: anywhere;
}

.toc-link:first-child {
  padding-top: 0;
}

.toc-link:last-child {
  padding-bottom: 0;
}

.toc-link::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 1px;
  background: var(--muted);
  opacity: 0.1;
}

.toc-link:hover {
  color: var(--primary);
  text-decoration: none;
}

.toc-link.active {
  color: var(--primary);
  font-weight: 600;
}

.toc-link.active::before {
  background: var(--primary);
  opacity: 1;
}

/* 层级缩进样式 - 连接线全部在最左边，层级只体现在文字缩进上 */
.toc-link.level-1 {
  padding-inline-start: 1rem;
}
.toc-link.level-2 {
  padding-inline-start: 2rem;
}
.toc-link.level-3 {
  padding-inline-start: 3rem;
}
.toc-link.level-4 {
  padding-inline-start: 4rem;
}
.toc-link.level-5 {
  padding-inline-start: 5rem;
}
.toc-link.level-6 {
  padding-inline-start: 6rem;
}

/* 所有连接线都在最左边 */
.toc-link::before {
  left: 0 !important;
}

/* 水平连接线样式 - 全部在最左边 */
.toc-link.level-2::after,
.toc-link.level-3::after,
.toc-link.level-4::after,
.toc-link.level-5::after,
.toc-link.level-6::after {
  content: "";
  position: absolute;
  top: 50%;
  width: 0.5rem;
  height: 1px;
  background: var(--muted);
  opacity: 0.1;
  left: 0 !important;
}

.post-content {
  width: 100%;
  gap: 1.35rem;
  font-size: 1rem;
  overflow-x: hidden;
}

.post-content * {
  max-width: 100%;
  overflow-x: auto;
  word-wrap: break-word;
  overflow-wrap: break-word;
}

.post-content img {
  max-width: 100%;
  border-radius: 6px;
  box-shadow: var(--shadow-md);
  display: block;
  margin: 10px 0;
  cursor: pointer;
}

.post-content pre {
  background: rgba(15, 23, 42, 0.92);
  color: #e2e8f0;
  padding: 1rem 1.3rem;
  border-radius: 18px;
  overflow-x: auto;
  font-size: 0.95rem;
}

.post-content code {
  background: rgba(37, 99, 235, 0.16);
  color: var(--primary);
  padding: 0.25rem 0.4rem;
  border-radius: 6px;
  font-size: 0.92rem;
}
/* 文章导航 */
.post-navigation {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
  margin-top: 2rem;
  padding-top: 1.5rem;
  border-top: 1px solid var(--border);
}

.post-navigation .nav-link {
  display: flex;
  align-items: center;
  padding: 0.875rem;
  background: var(--bg-alt);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  text-decoration: none;
  transition: all 0.2s ease;
}

.post-navigation .nav-link:hover {
  background: var(--primary-soft);
  border-color: var(--primary);
  text-decoration: none;
}

.post-navigation .nav-link.disabled {
  opacity: 0.6;
  cursor: not-allowed;
}

.post-navigation .nav-link.disabled:hover {
  background: var(--bg-alt);
  border-color: var(--border);
}

.nav-content {
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
}

.nav-label {
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--muted);
  letter-spacing: 0.05em;
}

.nav-title {
  font-size: 0.95rem;
  font-weight: 500;
  color: var(--text);
  line-height: 1.4;
}

/* 标签页面 */
.tag-gallery {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
  gap: 1.5rem;
}

.tag-card {
  background: var(--bg-alt);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 1.5rem;
  transition: all 0.2s ease;
  box-shadow: var(--shadow);
}

.tag-card:hover {
  box-shadow: var(--shadow-md);
  transform: translateY(-2px);
}

.tag-title {
  font-size: 1.25rem;
  font-weight: 600;
  margin: 0 0 0.5rem 0;
}

.tag-title a {
  color: var(--text);
  text-decoration: none;
}

.tag-title a:hover {
  color: var(--primary);
  text-decoration: none;
}

.tag-meta {
  margin-bottom: 0.75rem;
}

.tag-count {
  font-size: 0.9rem;
  color: var(--muted);
}

.tag-description {
  font-size: 0.9rem;
  color: var(--muted);
  line-height: 1.5;
  margin: 0;
}

/* 空状态 */
.empty-state {
  text-align: center;
  padding: 4rem 2rem;
  background: var(--bg-alt);
  border: 1px solid var(--border);
  border-radius: 12px;
  box-shadow: var(--shadow);
}

.empty-icon {
  font-size: 4rem;
  margin-bottom: 1.5rem;
  opacity: 0.6;
}

.empty-state h3 {
  font-size: 1.5rem;
  font-weight: 600;
  margin: 0 0 1rem 0;
  color: var(--text);
}

.empty-state p {
  font-size: 1rem;
  color: var(--muted);
  margin: 0;
  line-height: 1.6;
}

/* 移动端菜单按钮 */
.mobile-menu-button {
  width: 48px;
  height: 48px;
  background: var(--primary);
  color: var(--bg);
  border-radius: 50%;
  box-shadow: var(--shadow-lg);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all 0.2s ease;
}

.mobile-menu-button:hover {
  background: var(--primary-strong);
  transform: scale(1.05);
  color: var(--text);
}

.mobile-menu-button svg {
  width: 20px;
  height: 20px;
}

/* 移动端抽屉 */
.mobile-drawer {
  position: fixed;
  top: 0;
  right: -320px;
  width: 320px;
  height: 100vh;
  background: var(--bg-alt);
  border-left: 1px solid var(--border);
  box-shadow: var(--shadow-lg);
  z-index: 1000;
  transition: right 0.3s ease;
  overflow-y: auto;
  display: flex;
  flex-direction: column;
}

.mobile-drawer.open {
  right: 0;
}

.mobile-drawer-overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0, 0, 0, 0.5);
  z-index: 999;
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.3s ease, visibility 0.3s ease;
}

.mobile-drawer-overlay.open {
  opacity: 1;
  visibility: visible;
}

.mobile-drawer-header {
  padding: 1.5rem;
  border-bottom: 1px solid var(--border);
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.mobile-drawer-brand {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.mobile-drawer-logo {
  width: 32px;
  height: 32px;
  border-radius: 6px;
  object-fit: cover;
  box-shadow: var(--shadow);
}

.mobile-drawer-title {
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--text);
  margin: 0;
}

.mobile-drawer-close {
  background: none;
  border: none;
  color: var(--muted);
  cursor: pointer;
  padding: 0.5rem;
  border-radius: 4px;
  transition: all 0.2s ease;
  font-size: 1.5rem;
  font-weight: bold;
  width: 32px;
  height: 32px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.mobile-drawer-close:hover {
  background: var(--primary-soft);
  color: var(--primary);
}

.mobile-drawer-content {
  padding: 1.5rem;
  flex: 1;
  display: flex;
  flex-direction: column;
}

.mobile-drawer-nav {
  display: flex;
  flex-direction: column;
  gap: 2rem;
  flex: 1;
  overflow-y: auto;
}

.mobile-nav-section {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.mobile-nav-section-title {
  font-size: 0.9rem;
  font-weight: 400;
  color: var(--text);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin: 0;
}

.mobile-nav-list,
.mobile-category-list {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.mobile-nav-list .nav-link,
.mobile-category-list .nav-link {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.75rem 1rem;
  background: var(--primary-soft);
  color: var(--primary);
  border-radius: 6px;
  font-weight: 500;
  text-decoration: none;
  transition: all 0.2s ease;
}

.mobile-nav-list .nav-link:hover,
.mobile-category-list .nav-link:hover {
  background: var(--primary-strong);
  color: var(--primary);
  text-decoration: none;
}

.mobile-tag-flow {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.mobile-tag-flow .tag-chip {
  display: inline-block;
  padding: 0.4rem 0.8rem;
  background: var(--primary-soft);
  color: var(--primary);
  border-radius: 4px;
  font-size: 0.8rem;
  font-weight: 500;
  text-decoration: none;
  transition: var(--transition);
  border: 1px solid var(--border);
}

.mobile-tag-flow .tag-chip:hover {
  background: var(--primary);
  color: var(--bg);
  text-decoration: none;
  border-color: var(--primary);
}

.mobile-drawer-theme {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1rem;
  background: var(--primary-soft);
  border-radius: 8px;
}

.mobile-drawer-theme-label {
  font-weight: 600;
  color: var(--primary);
}

.mobile-drawer-theme .theme-switch {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.mobile-drawer-theme .theme-switch input {
  position: absolute;
  opacity: 0;
  pointer-events: auto;
  width: 40px;
  height: 20px;
  cursor: pointer;
}

.mobile-drawer-theme .switch-track {
  width: 40px;
  height: 20px;
  border-radius: 10px;
  background: var(--border);
  display: flex;
  align-items: center;
  padding: 2px;
  transition: background 0.3s ease;
}

.mobile-drawer-theme .switch-thumb {
  width: 16px;
  height: 16px;
  border-radius: 50%;
  background: var(--bg-alt);
  transition: transform 0.3s ease;
  box-shadow: var(--shadow);
}

.mobile-drawer-theme .theme-switch input:checked + .switch-track {
  background: var(--primary);
}

.mobile-drawer-theme .theme-switch input:checked + .switch-track .switch-thumb {
  transform: translateX(20px);
}

.no-categories-text,
.no-tags-text {
  color: var(--muted);
  font-style: italic;
  text-align: center;
  padding: 1rem;
}

/* 返回顶部按钮 */
.back-to-top {
  position: fixed;
  bottom: 2rem;
  right: 2rem;
  width: 48px;
  height: 48px;
  background: var(--primary);
  color: var(--bg);
  border: none;
  border-radius: 50%;
  box-shadow: var(--shadow-lg);
  cursor: pointer;
  z-index: 99;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all 0.3s ease;
  opacity: 0;
  visibility: hidden;
  transform: translateY(20px);
}

.back-to-top.visible {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.back-to-top:hover {
  background: var(--primary-strong);
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
  color: var(--text);
}

.back-to-top svg {
  width: 20px;
  height: 20px;
}

/* 响应式显示控制 */
.desktop-only {
  display: block;
}

.mobile-only {
  display: none;
}

/* 当侧边栏显示时移动端头部隐藏 */
@media (min-width: 1025px) {
  .mobile-only {
    display: none !important;
  }
}

@media (max-width: 1024px) {
  .desktop-only {
    display: none !important;
  }

  .mobile-only {
    display: block;
  }
}

/* 移动端标题样式 */
.mobile-header {
  padding: 1rem;
  border-bottom: 1px solid var(--border);
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.mobile-header-brand {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.mobile-header-logo {
  width: 32px;
  height: 32px;
  border-radius: 6px;
  object-fit: cover;
}

.mobile-header-title {
  font-size: 1.25rem;
  font-weight: 600;
  color: var(--text);
  margin: 0;
}

/* 响应式设计 */
@media (max-width: 1200px) {
  .content-wrapper {
    max-width: 90%;
    padding: 2.5rem 1.5rem;
  }
}

@media (max-width: 1024px) {
  .sidebar {
    transform: translateX(-100%);
  }

  .main-content {
    margin-left: 0;
  }

  .content-wrapper {
    padding: 2rem 1.5rem;
    max-width: 95%;
  }

  .page-title {
    font-size: 1.75rem;
  }

  .post-detail .post-title {
    font-size: 2rem;
  }

  .post-card {
    padding: 2rem;
  }
}

@media (max-width: 768px) {
  .content-wrapper {
    padding: 1rem;
    max-width: 100%;
  }
  .post-meta {
    gap: 0.3rem;
  }
  .page-title {
    font-size: 1.625rem;
  }
  .page-header {
    margin-bottom: 1rem;
  }
  .post-card {
    padding: 1rem;
  }
  .post-card:hover {
    background: transparent;
    border-bottom-color: var(--border);
  }
  .post-detail {
    padding: 1rem;
    border-radius: var(--radius-lg);
  }

  .post-detail .post-title {
    font-size: 1.75rem;
  }

  .post-card .post-title {
    font-size: 1.125rem;
  }

  .post-excerpt {
    font-size: 0.9rem;
    line-height: 1.5;
  }

  .post-navigation {
    grid-template-columns: 1fr;
  }

  .tag-gallery {
    grid-template-columns: 1fr;
  }

  .mobile-drawer {
    width: 320px;
    right: -320px;
  }
}

@media (max-width: 480px) {
  h2 a {
    font-size: 1.2rem;
  }
  .content-wrapper {
    padding: 1rem;
  }

  .page-title {
    font-size: 1.5rem;
  }

  .page-header {
    margin-bottom: 1rem;
  }

  .post-detail {
    padding: 1rem;
  }

  .post-detail .post-title {
    font-size: 1.625rem;
  }

  .post-card .post-title {
    font-size: 1rem;
  }

  .post-excerpt {
    font-size: 0.85rem;
    line-height: 1.4;
  }

  .mobile-drawer {
    width: 280px;
    right: -280px;
  }

  .back-to-top {
    bottom: 1.5rem;
    right: 1.5rem;
    width: 44px;
    height: 44px;
  }
}

/* 目录高亮 */
.toc-link.active {
  color: var(--primary);
  font-weight: 600;
}
#waline {
  margin-top: 2rem;
  padding-top: 1.5rem;
  border-top: 1px solid var(--border);
}