:root {
  /* 明亮模式 - 现代天蓝色系 */
  --bg: #F8FCFF;
  --bg-secondary: #FFFFFF;
  --bg-tertiary: #F1F5F9;
  --bg-hover: #E2E8F0;
  --text: #1E293B;
  --text-secondary: #64748B;
  --primary: #3B82F6;
  --primary-hover: #2563EB;
  --accent: #60A5FA;
  --accent-hover: #3B82F6;
  --card-bg: #EFF6FF;
  --border-color: #E2E8F0;
  
  /* 阴影系统 */
  --shadow-soft: 0 1px 3px 0 rgba(0, 0, 0, 0.05), 0 1px 2px 0 rgba(0, 0, 0, 0.03);
  --shadow-medium: 0 4px 6px -1px rgba(0, 0, 0, 0.06), 0 2px 4px -1px rgba(0, 0, 0, 0.03);
  --shadow-hover: 0 10px 15px -3px rgba(0, 0, 0, 0.08), 0 4px 6px -2px rgba(0, 0, 0, 0.03);
  
  /* 圆角系统 */
  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 16px;
  --radius-xl: 24px;
  
  /* 容器与间距 */
  --container-max: 1200px;
  --spacing-xs: 6px;
  --spacing-sm: 12px;
  --spacing-md: 16px;
  --spacing-lg: 24px;
  --spacing-xl: 32px;
  
  /* 字体系统 */
  --font-size-xs: clamp(0.75rem, 1vw, 0.875rem);
  --font-size-sm: clamp(0.875rem, 1.2vw, 1rem);
  --font-size-base: clamp(1rem, 1.5vw, 1.125rem);
  --font-size-lg: clamp(1.125rem, 2vw, 1.25rem);
  --font-size-xl: clamp(1.25rem, 2.5vw, 1.5rem);
  --font-size-2xl: clamp(1.5rem, 3vw, 1.875rem);
  --font-size-3xl: clamp(1.875rem, 4vw, 2.25rem);
  --font-size-4xl: clamp(2.25rem, 5vw, 3rem);
  
  /* 过渡效果 */
  --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-fast: all 0.2s ease;
  --transition-slow: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

/* 暗夜模式 */
[data-theme="dark"] {
  --bg: #1a1f35;
  --bg-secondary: #242943;
  --bg-tertiary: #2d3350;
  --bg-hover: #383e5f;
  --text: #f8fafc;
  --text-secondary: #cbd5e1;
  --primary: #60a5fa;
  --primary-hover: #3b82f6;
  --accent: #818cf8;
  --accent-hover: #6366f1;
  --card-bg: #242943;
  --border-color: #383e5f;
  
  /* 阴影系统 - 暗夜模式 */
  --shadow-soft: 0 1px 3px 0 rgba(0, 0, 0, 0.2), 0 1px 2px 0 rgba(0, 0, 0, 0.1);
  --shadow-medium: 0 4px 6px -1px rgba(0, 0, 0, 0.3), 0 2px 4px -1px rgba(0, 0, 0, 0.2);
  --shadow-hover: 0 10px 15px -3px rgba(0, 0, 0, 0.4), 0 4px 6px -2px rgba(0, 0, 0, 0.3);
}

/* 系统主题检测 - 自动应用暗色模式 */
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --bg: #1a1f35;
    --bg-secondary: #242943;
    --bg-tertiary: #2d3350;
    --bg-hover: #383e5f;
    --text: #f8fafc;
    --text-secondary: #cbd5e1;
    --primary: #60a5fa;
    --primary-hover: #3b82f6;
    --accent: #818cf8;
    --accent-hover: #6366f1;
    --card-bg: #242943;
    --border-color: #383e5f;
    
    /* 阴影系统 - 暗夜模式 */
    --shadow-soft: 0 1px 3px 0 rgba(0, 0, 0, 0.2), 0 1px 2px 0 rgba(0, 0, 0, 0.1);
    --shadow-medium: 0 4px 6px -1px rgba(0, 0, 0, 0.3), 0 2px 4px -1px rgba(0, 0, 0, 0.2);
    --shadow-hover: 0 10px 15px -3px rgba(0, 0, 0, 0.4), 0 4px 6px -2px rgba(0, 0, 0, 0.3);
  }
}

/* 主题切换按钮样式 */
.theme-toggle {
  background: var(--bg-secondary);
  border: none;
  border-radius: 50%;
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: var(--transition);
  box-shadow: var(--shadow-soft);
  position: relative;
  margin-left: 12px;
  z-index: 100;
}

.theme-toggle:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-medium);
  background: var(--bg-tertiary);
}

/* 主题图标样式 */
.light-icon,
.dark-icon {
  position: absolute;
  transition: var(--transition);
  color: var(--text);
  font-size: 18px;
}

/* 明亮模式下显示太阳图标，隐藏月亮图标 */
.light-icon {
  opacity: 1;
  transform: scale(1);
}

.dark-icon {
  opacity: 0;
  transform: scale(0.8);
}

/* 暗夜模式下显示月亮图标，隐藏太阳图标 */
[data-theme="dark"] .light-icon {
  opacity: 0;
  transform: scale(0.8);
}

[data-theme="dark"] .dark-icon {
  opacity: 1;
  transform: scale(1);
}

/* 系统暗色模式下自动应用 */
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) .light-icon {
    opacity: 0;
    transform: scale(0.8);
  }
  
  :root:not([data-theme="light"]) .dark-icon {
    opacity: 1;
    transform: scale(1);
  }
}

/* 平滑过渡效果 */
* {
  transition: color var(--transition), background-color var(--transition), border-color var(--transition), box-shadow var(--transition);
}

/* 主题切换按钮动画 */
.theme-toggle {
  animation: fadeIn 0.3s ease-out;
}

@keyframes fadeIn {
  from {
    opacity: 0;
    transform: translateY(-10px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html, body {
  height: 100%;
  scroll-behavior: smooth;
}

body {
  background: var(--bg);
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', 'Helvetica Neue', Helvetica, Arial, sans-serif;
  line-height: 1.75;
  font-weight: 400;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
}

/* 标题样式优化 */
h1, h2, h3, h4, h5, h6 {
  font-weight: 700;
  line-height: 1.3;
  margin: 0;
  color: var(--text);
}

/* 段落样式 */
p {
  margin: 0 0 var(--spacing-lg) 0;
  line-height: 1.75;
  color: var(--text-secondary);
}

/* 链接样式增强 */
a {
  color: var(--primary);
  text-decoration: none;
  transition: var(--transition);
  position: relative;
}

a:hover {
  color: var(--primary-hover);
}

/* 增强链接交互 */
a::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--primary);
  transition: var(--transition-fast);
}

a:hover::after {
  width: 100%;
}

.container {
  width: 90%;
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 16px;
}

/* 链接样式 */
a {
  color: var(--primary);
  text-decoration: none;
  transition: var(--transition);
}

a:hover {
  color: var(--primary-hover);
}

/* 列表样式重置 */
ul, ol {
  list-style: none;
}

/* 头部导航 */
header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  background: rgba(255, 255, 255, 0.35);
  backdrop-filter: saturate(180%) blur(6px);
  transition: var(--transition);
  box-shadow: var(--shadow-soft);
}

[data-theme="dark"] header {
  background: rgba(15, 23, 42, 0.85);
}

.scrolled {
  background: rgba(255, 255, 255, 0.95);
  box-shadow: var(--shadow-medium);
  backdrop-filter: saturate(180%) blur(12px);
}

[data-theme="dark"] .scrolled {
  background: rgba(15, 23, 42, 0.95);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 70px;
}

.site-logo {
  margin: 0;
  font-size: var(--font-size-xl);
  font-weight: 700;
  color: var(--primary);
}

/* 导航菜单 */
.nav {
  display: flex;
  align-items: center;
}

.nav-list {
  display: flex;
  list-style: none;
  margin: 0;
  padding: 0;
  gap: 24px;
}

.nav-link {
  display: block;
  padding: 12px 0;
  color: var(--text);
  font-size: var(--font-size-base);
  font-weight: 500;
  position: relative;
}

.nav-link:hover,
.nav-link.active {
  color: var(--primary);
}

.nav-link.active::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 100%;
  height: 2px;
  background: var(--accent);
  border-radius: 2px;
}

/* 移动端菜单切换按钮 */
.menu-toggle {
  display: none;
  background: none;
  border: none;
  font-size: var(--font-size-xl);
  color: var(--primary);
  cursor: pointer;
  padding: 8px;
  transition: var(--transition);
  z-index: 101;
}

/* 英雄区域 */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: 100px 20px 80px;
  background: linear-gradient(135deg, var(--bg) 0%, var(--bg-secondary) 100%);
  position: relative;
  overflow: hidden;
}

/* 装饰元素 */
.hero::before {
  content: '';
  position: absolute;
  top: -50%;
  right: -20%;
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, rgba(59, 130, 246, 0.1) 0%, transparent 70%);
  border-radius: 50%;
  z-index: 0;
  animation: float 20s ease-in-out infinite;
}

.hero::after {
  content: '';
  position: absolute;
  bottom: -30%;
  left: -10%;
  width: 400px;
  height: 400px;
  background: radial-gradient(circle, rgba(96, 165, 250, 0.15) 0%, transparent 70%);
  border-radius: 50%;
  z-index: 0;
  animation: float 15s ease-in-out infinite reverse;
}

/* 浮动动画 */
@keyframes float {
  0%, 100% {
    transform: translateY(0px) rotate(0deg);
  }
  33% {
    transform: translateY(-20px) rotate(1deg);
  }
  66% {
    transform: translateY(10px) rotate(-1deg);
  }
}

.hero-content {
  position: relative;
  z-index: 1;
  max-width: 700px;
}

.hero-content h1 {
  margin: 0 0 24px;
  font-size: var(--font-size-4xl);
  font-weight: 800;
  line-height: 1.2;
  color: var(--primary);
  background: linear-gradient(135deg, var(--primary), var(--accent));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  animation: fadeInUp 0.8s ease-out;
}

.hero-content p {
  margin: 0 0 48px;
  font-size: clamp(1.1rem, 2.5vw, 1.375rem);
  color: var(--text-secondary);
  line-height: 1.8;
  animation: fadeInUp 0.8s ease-out 0.2s both;
}

/* 行动按钮组 */
.cta-group {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 12px;
  animation: fadeInUp 0.8s ease-out 0.4s both;
}

/* 行动按钮 */
.cta {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  padding: 14px 20px;
  color: white;
  border: none;
  border-radius: var(--radius-lg);
  transition: var(--transition-slow);
  cursor: pointer;
  font-size: var(--font-size-base);
  font-weight: 600;
  min-height: 48px;
  min-width: auto;
  max-width: none;
  width: auto;
  position: relative;
  overflow: hidden;
  text-align: center;
  flex: 0 0 auto;
  background: linear-gradient(135deg, var(--primary), var(--accent));
  box-shadow: var(--shadow-medium);
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

/* 导航按钮 */
.cta-nav {
  background: linear-gradient(135deg, var(--primary), var(--accent));
}

.cta-nav:hover {
  background: linear-gradient(135deg, var(--primary-hover), var(--primary));
  transform: translateY(-4px) scale(1.05);
  box-shadow: 0 12px 24px rgba(59, 130, 246, 0.3);
}

/* 博客按钮 */
.cta-blog {
  background: linear-gradient(135deg, var(--accent), #818CF8);
}

.cta-blog:hover {
  background: linear-gradient(135deg, var(--primary), var(--accent));
  transform: translateY(-4px) scale(1.05);
  box-shadow: 0 12px 24px rgba(59, 130, 246, 0.3);
}

.cta::before {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.4), transparent);
  transition: var(--transition-slow);
  z-index: 1;
}

.cta:hover::before {
  left: 100%;
}

.cta:active {
  transform: translateY(-2px) scale(1.02);
}

.cta span {
  position: relative;
  z-index: 2;
  transition: var(--transition-fast);
}

.cta:hover span {
  transform: scale(1.05);
}

/* 添加按钮脉冲效果 */
@keyframes pulse {
  0%, 100% {
    box-shadow: 0 4px 6px -1px rgba(59, 130, 246, 0.3), 0 2px 4px -1px rgba(59, 130, 246, 0.2);
  }
  50% {
    box-shadow: 0 10px 15px -3px rgba(59, 130, 246, 0.4), 0 4px 6px -2px rgba(59, 130, 246, 0.3);
  }
}

.cta-nav {
  animation: pulse 2s ease-in-out infinite;
}

.cta-blog {
  animation: pulse 2s ease-in-out 0.5s infinite;
}

/* 淡入上移动画 */
@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(30px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* 通用标题样式 */
.section-header {
  text-align: center;
  margin-bottom: 48px;
  position: relative;
}

.section-header h2 {
  font-size: var(--font-size-2xl);
  font-weight: 700;
  color: var(--primary);
  margin-bottom: 12px;
}

.section-divider {
  width: 60px;
  height: 3px;
  background: var(--accent);
  margin: 0 auto;
  border-radius: 2px;
}

/* 强制刷新按钮样式 */
.force-refresh-btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 10px 16px;
  background: linear-gradient(135deg, var(--primary), var(--accent));
  color: white;
  border: none;
  border-radius: var(--radius-md);
  font-size: var(--font-size-sm);
  font-weight: 500;
  cursor: pointer;
  transition: var(--transition);
  box-shadow: var(--shadow-soft);
  margin-top: 16px;
}

.force-refresh-btn:hover {
  background: linear-gradient(135deg, var(--primary-hover), var(--primary));
  transform: translateY(-2px);
  box-shadow: var(--shadow-medium);
}

.force-refresh-btn:active {
  transform: translateY(0);
  box-shadow: var(--shadow-soft);
}

.force-refresh-btn i {
  font-size: var(--font-size-base);
  transition: var(--transition);
}

.force-refresh-btn:hover i {
  animation: spin 0.6s ease-out;
}

@keyframes spin {
  0% {
    transform: rotate(0deg);
  }
  100% {
    transform: rotate(360deg);
  }
}

/* 网站地图 */
.sitemap {
  padding: 80px 0;
  background: var(--bg-secondary);
  position: relative;
  overflow: hidden;
}

.sitemap::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: linear-gradient(90deg, var(--primary), var(--accent), var(--primary));
}

.blog {
  padding: 60px 0;
  background: var(--bg);
  position: relative;
  overflow: hidden;
}

.sitemap-content {
  max-width: var(--container-max);
  margin: 0 auto;
  position: relative;
  z-index: 1;
}

.sitemap-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 40px;
  margin: 0 -16px;
}

@media (min-width: 992px) {
  .sitemap-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 56px;
  }
}

.sitemap-section {
  background: var(--card-bg);
  padding: 32px 28px;
  margin: 0 16px;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-soft);
  border: 2px solid var(--border-color);
  transition: var(--transition);
  opacity: 0;
  transform: translateY(30px);
  animation: fadeInUp 0.8s ease-out 0.8s both;
}

/* 博客section */
.sitemap-section.blog-section {
  animation: fadeInUp 0.8s ease-out 0.6s both;
}

.sitemap-section:hover {
  box-shadow: var(--shadow-hover);
}

.sitemap-section h3 {
  display: flex;
  align-items: center;
  gap: 16px;
  font-size: var(--font-size-xl);
  font-weight: 700;
  color: var(--primary);
  margin-bottom: 24px;
}

.sitemap-section h3 i {
  font-size: var(--font-size-xl);
  color: var(--primary);
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--bg-secondary);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-soft);
}

.sitemap-section h4 {
  font-size: var(--font-size-lg);
  font-weight: 600;
  color: var(--primary);
  margin: 0 0 16px 0;
}

/* 博客链接展示区域 */
.blog-section {
  animation: fadeInUp 0.8s ease-out 0.6s both;
  background: var(--card-bg);
  padding: 16px 20px;
  margin: 0;
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-soft);
  border: 2px solid var(--border-color);
  transition: var(--transition);
  position: relative;
}

.blog-section h3 {
  font-size: var(--font-size-base);
  margin-bottom: 12px;
}

.blog-links {
  display: flex;
  flex-direction: column;
  gap: 6px;
  max-width: 600px;
  margin: 0 auto;
}

.blog-link {
  display: block;
  padding: 8px 12px;
  background: var(--bg-secondary);
  border-radius: var(--radius-sm);
  border: 1px solid var(--border-color);
  text-decoration: none;
  transition: var(--transition);
  box-shadow: var(--shadow-soft);
  color: var(--text-primary);
  font-size: var(--font-size-sm);
  font-weight: 500;
}

.blog-link:hover {
  border-color: var(--primary);
  box-shadow: var(--shadow-medium);
  transform: translateY(-1px);
  color: var(--primary);
}

/* 可扩展容器 */
.expandable-container {
  display: flex;
  flex-direction: column;
  gap: 24px;
  margin: 0 -16px;
}

/* 可扩展主内容 */
.expandable-main {
  background: var(--bg-secondary);
  padding: 24px 20px;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-soft);
  margin: 0 16px;
  transition: var(--transition);
  border: 2px solid var(--border-color);
}

.expandable-main:hover {
  box-shadow: var(--shadow-medium);
  transform: translateY(-2px);
}

/* 可扩展详情区 */
.expandable-details {
  background: var(--bg-secondary);
  padding: 24px 20px;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-soft);
  min-height: 200px;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  margin: 0 16px;
  transition: var(--transition);
  border: 2px solid var(--border-color);
}

.expandable-details:hover {
  box-shadow: var(--shadow-medium);
  transform: translateY(-2px);
}

.expandable-details::before {
  content: '点击上方选项查看详情';
  color: var(--text-secondary);
  font-style: italic;
  font-size: var(--font-size-base);
}

.expandable-details:has(.expandable-content.active)::before {
  content: none;
}

.expandable-details:has(.expandable-content.active) {
  display: block;
  min-height: auto;
}

/* 可扩展内容 */
.expandable-content {
  display: none;
  opacity: 0;
  transform: translateY(20px);
  transition: all 0.3s ease;
}

.expandable-content.active {
  display: block;
  opacity: 1;
  transform: translateY(0);
  animation: fadeInUp 0.4s ease-out;
}

/* 可扩展链接列表 */
.sitemap-links {
  list-style: none;
  padding: 0;
  margin: 0;
}

.sitemap-links li {
  margin-bottom: 20px;
  transition: var(--transition);
}

.sitemap-links li:last-child {
  margin-bottom: 0;
}

.sitemap-links li:hover {
  transform: translateX(8px);
}

/* 主链接 */
.main-links li:hover {
  transform: translateX(4px);
}

/* 二级链接 */
.secondary-links {
  margin-top: 24px;
  padding-left: 24px;
}

.secondary-links li {
  margin-bottom: 20px;
}

.secondary-links li:hover {
  transform: translateX(4px);
}

/* 树状链接列表 */
.tree-links {
  list-style: none;
  padding: 0;
  margin: 0;
  padding-left: 8px;
}

/* 树状项目 */
.tree-item {
  position: relative;
  margin-bottom: 12px;
  transition: var(--transition);
}

.tree-item:last-child {
  margin-bottom: 0;
}

.tree-item::before {
  content: '';
  position: absolute;
  top: 0;
  left: -20px;
  width: 1px;
  height: calc(100% + 12px);
  background: var(--border-color);
}

.tree-item:last-child::before {
  height: calc(100% - 20px);
}

.tree-item::after {
  content: '';
  position: absolute;
  top: 16px;
  left: -20px;
  width: 12px;
  height: 1px;
  background: var(--border-color);
}

/* 树状主体 */
.tree-main {
  position: relative;
  display: block;
}

.tree-main a {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 14px 20px;
  background: var(--bg-secondary);
  border-radius: var(--radius-md);
  font-weight: 500;
  color: var(--text);
  font-size: var(--font-size-base);
  transition: var(--transition);
  box-shadow: var(--shadow-soft);
  border: 1px solid transparent;
}

.tree-main a:hover {
  background: var(--bg-hover);
  color: var(--primary);
  box-shadow: var(--shadow-medium);
  transform: translateX(4px);
  border-color: var(--primary);
}

/* 树状图标 */
.tree-icon {
  font-size: var(--font-size-sm);
  color: var(--text-secondary);
  flex-shrink: 0;
  transition: var(--transition);
}

.tree-main a:hover .tree-icon {
  color: var(--primary);
  transform: translateX(4px);
}

/* 资源图标 */
.resource-icon {
  font-size: var(--font-size-sm);
  color: var(--primary);
  flex-shrink: 0;
  width: 24px;
  height: 24px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--bg-tertiary);
  border-radius: var(--radius-sm);
}

/* 树状描述 */
.tree-description {
  position: absolute;
  left: 0;
  top: 100%;
  z-index: 10;
  width: calc(100% + 40px);
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 16px 20px;
  margin-top: 8px;
  box-shadow: var(--shadow-medium);
  opacity: 0;
  visibility: hidden;
  transform: translateY(-8px);
  transition: var(--transition);
  pointer-events: none;
  border-left: 4px solid var(--primary);
}

.tree-description::before {
  content: '';
  position: absolute;
  top: -8px;
  left: 30px;
  width: 16px;
  height: 16px;
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-right: none;
  border-bottom: none;
  transform: rotate(45deg);
  border-radius: 4px 0 0 0;
}

.tree-description p {
  margin: 0;
  color: var(--text-secondary);
  font-size: var(--font-size-sm);
  line-height: 1.6;
}

/* 鼠标悬停显示描述 */
.tree-item:hover .tree-description {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
  pointer-events: auto;
}

.tree-item:hover .tree-main a {
  background: var(--bg-hover);
  border-color: var(--primary);
}

/* 移除旧的资源项样式 */
.resource-item,
.resource-main,
.resource-description {
  display: none;
}

/* 可扩展切换按钮 */
.expandable-item {
  margin-bottom: 16px;
}

.expandable-toggle {
  display: flex;
  align-items: center;
  gap: 16px;
  width: 100%;
  padding: 0;
  background: none;
  border: none;
  color: var(--text);
  font-size: var(--font-size-base);
  font-weight: 500;
  transition: var(--transition);
  cursor: pointer;
  text-align: left;
}

.expandable-toggle:hover {
  color: var(--primary);
  transform: translateX(4px);
}

.expandable-toggle:focus {
  outline: none;
  color: var(--primary);
}

.expandable-toggle i:first-child {
  font-size: var(--font-size-sm);
  color: var(--primary);
  flex-shrink: 0;
  width: 24px;
  height: 24px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--bg-secondary);
  border-radius: 50%;
  box-shadow: var(--shadow-soft);
}

.expand-icon {
  margin-left: auto;
  font-size: var(--font-size-sm);
  color: var(--text-secondary);
  transition: var(--transition);
}

.expand-icon.rotated {
  transform: rotate(90deg);
  color: var(--primary);
}

/* 链接样式 */
.sitemap-links a {
  display: flex;
  align-items: center;
  gap: 16px;
  color: var(--text);
  font-size: var(--font-size-base);
  font-weight: 500;
  transition: var(--transition);
}

.sitemap-links a:hover {
  color: var(--primary);
}

.sitemap-links a i {
  font-size: var(--font-size-sm);
  color: var(--primary);
  flex-shrink: 0;
  width: 24px;
  height: 24px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--bg-secondary);
  border-radius: 50%;
  box-shadow: var(--shadow-soft);
}

.blog-content {
  text-align: center;
  max-width: 700px;
  margin: 0 auto;
  padding: 0 20px;
  position: relative;
  z-index: 1;
}

.section-header {
  text-align: center;
  margin-bottom: 48px;
  opacity: 0;
  transform: translateY(20px);
  animation: fadeInUp 0.8s ease-out 0.2s both;
}

.section-header h2 {
  font-size: var(--font-size-2xl);
  font-weight: 700;
  color: var(--primary);
  margin-bottom: 16px;
}

.section-divider {
  width: 80px;
  height: 3px;
  background: linear-gradient(90deg, transparent, var(--primary), transparent);
  margin: 0 auto;
  border-radius: 2px;
}

.blog-content p {
  font-size: var(--font-size-base);
  color: var(--text-secondary);
  margin-bottom: 40px;
  line-height: 1.75;
  opacity: 0;
  transform: translateY(20px);
  animation: fadeInUp 0.8s ease-out 0.4s both;
}

.blog-button {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  padding: 18px 36px;
  background: var(--primary);
  color: white;
  border: none;
  border-radius: var(--radius-xl);
  font-size: var(--font-size-base);
  font-weight: 600;
  transition: var(--transition);
  box-shadow: var(--shadow-medium);
  min-height: 54px;
  position: relative;
  overflow: hidden;
  opacity: 0;
  transform: translateY(20px);
  animation: fadeInUp 0.8s ease-out 0.6s both;
}

.blog-button::before {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
  transition: var(--transition);
}

.blog-button:hover::before {
  left: 100%;
}

.blog-button:hover {
  background: var(--primary-hover);
  transform: translateY(-3px);
  box-shadow: var(--shadow-hover);
  color: white;
}

.blog-button i {
  color: white;
  font-size: var(--font-size-lg);
  transition: var(--transition);
}

.blog-button:hover i {
  transform: translateX(4px);
}

/* 资源站section（横线铺满） */
.resources-section {
  width: 100%;
  padding: 32px 0;
  background: var(--bg);
  border-top: 1px solid var(--border-color);
  border-bottom: 1px solid var(--border-color);
  margin: 0 auto;
  max-width: var(--container-max);
  padding: 64px var(--spacing-xl);
}

.resources-section .sitemap-section {
  margin: 0;
  border-radius: 0;
  border: none;
  box-shadow: none;
  background: transparent;
  padding: 0;
  opacity: 1;
  transform: none;
  animation: none;
}

.resources-section .sitemap-section:hover {
  box-shadow: none;
}

/* 页脚 */
.footer {
  padding: 32px 0 24px;
  background: var(--bg);
  color: var(--text-secondary);
  border-top: 1px solid var(--border-color);
}

.footer-content {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 24px;
  margin-bottom: 24px;
}

@media (max-width: 768px) {
  .footer-content {
    grid-template-columns: 1fr;
    text-align: center;
    gap: 24px;
  }
}

.footer-logo h2 {
  font-size: var(--font-size-base);
  font-weight: 700;
  color: var(--primary);
  margin-bottom: 8px;
}

.footer-logo p {
  font-size: 0.875rem;
  color: var(--text-secondary);
  line-height: 1.6;
  margin: 0;
}

.footer-info h3 {
  font-size: var(--font-size-base);
  font-weight: 600;
  color: var(--primary);
  margin-bottom: 12px;
}

.footer-contact p {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.875rem;
  color: var(--text-secondary);
  margin-bottom: 16px;
}

.footer-contact i {
  color: var(--primary);
  font-size: 0.875rem;
  flex-shrink: 0;
}

.social-links {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
  justify-content: flex-start;
}

@media (max-width: 768px) {
  .social-links {
    justify-content: center;
  }
}

.social-link {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  background: var(--bg-secondary);
  color: var(--primary);
  border-radius: 50%;
  font-size: 0.875rem;
  transition: var(--transition);
  box-shadow: var(--shadow-soft);
}

.social-link:hover {
  background: var(--primary);
  color: white;
  transform: translateY(-3px) scale(1.1);
  box-shadow: var(--shadow-hover);
}

.footer-bottom {
  display: flex;
  flex-direction: column;
  gap: 12px;
  text-align: center;
  padding-top: 24px;
  border-top: 1px solid var(--border-color);
  font-size: 0.875rem;
  color: var(--text-secondary);
}

@media (min-width: 768px) {
  .footer-bottom {
    flex-direction: row;
    justify-content: space-between;
    align-items: center;
  }
}

.footer-copyright p,
.footer-beian p {
  margin: 0;
  font-size: 0.875rem;
  color: var(--text-secondary);
}

.footer-beian a {
  color: var(--text-secondary);
  transition: var(--transition);
}

.footer-beian a:hover {
  color: var(--primary);
}

/* 移动端响应式增强 */
@media (max-width: 768px) {
  /* 基础样式调整 */
  body {
    font-size: 16px;
  }
  
  /* 容器调整 */
  .container {
    padding: 0 var(--spacing-md);
  }
  
  /* 移动端菜单 */
  .menu-toggle {
    display: block;
  }
  
  /* 添加遮罩层 */
  .nav::before {
    content: '';
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.5);
    opacity: 0;
    visibility: hidden;
    transition: var(--transition);
    z-index: -1;
  }
  
  .nav.active::before {
    opacity: 1;
    visibility: visible;
  }
  
  .nav {
    position: fixed;
    top: 0;
    right: -100%;
    width: 85%;
    max-width: 320px;
    height: 100vh;
    background: var(--bg-secondary);
    box-shadow: -4px 0 20px rgba(0, 0, 0, 0.15);
    transition: var(--transition-slow);
    flex-direction: column;
    align-items: flex-start;
    padding: 90px 24px 24px;
    z-index: 1000;
  }
  
  .nav.active {
    right: 0;
  }
  
  .nav-list {
    flex-direction: column;
    width: 100%;
    gap: 0;
  }
  
  .nav-item {
    width: 100%;
  }
  
  .nav-link {
    padding: 18px 0;
    font-size: var(--font-size-lg);
    border-bottom: 1px solid var(--border-color);
  }
  
  /* 英雄区域移动端优化 */
  .hero {
    padding: 80px 20px 60px;
    min-height: 70vh;
  }
  
  .hero-content h1 {
    font-size: var(--font-size-2xl);
    line-height: 1.3;
    margin-bottom: 16px;
  }
  
  .hero-content p {
    font-size: var(--font-size-base);
    margin-bottom: 24px;
    line-height: 1.6;
  }
  
  /* 按钮移动端优化 */
  .cta-group {
    flex-direction: column;
    width: 100%;
    gap: 8px;
  }
  
  .cta,
  .blog-button {
    padding: 10px 16px;
    font-size: var(--font-size-sm);
    min-height: 38px;
    min-width: 100%;
    width: 100%;
  }
  
  /* 区块内边距优化 */
  .blog,
  .sitemap {
    padding: 50px 0;
  }
  
  /* 博客区域移动端优化 */
  .blog-section {
    padding: 14px 16px;
    margin: 0;
  }
  
  .blog-section h3 {
    font-size: var(--font-size-sm);
    margin-bottom: 10px;
  }
  
  .blog-links {
    gap: 4px;
  }
  
  .blog-link {
    padding: 10px 12px;
    font-size: var(--font-size-xs);
  }
  
  /* 网站地图移动端优化 */
  .sitemap {
    padding: 40px 0;
  }
  
  .sitemap-grid {
    gap: 24px;
    margin: 0;
  }
  
  .sitemap-section {
    padding: 20px 16px;
    margin: 0;
  }
  
  .sitemap-section h3 {
    font-size: var(--font-size-lg);
    gap: 12px;
    margin-bottom: 16px;
  }
  
  .sitemap-section h3 i {
    width: 36px;
    height: 36px;
    font-size: var(--font-size-lg);
  }
  
  .sitemap-section h4 {
    font-size: var(--font-size-base);
    margin-bottom: 12px;
  }
  
  .sitemap-links a {
    gap: 12px;
    font-size: var(--font-size-sm);
    padding: 12px 0;
  }
  
  .sitemap-links a i {
    width: 20px;
    height: 20px;
    font-size: var(--font-size-xs);
  }
  
  .sitemap-links li {
    margin-bottom: 12px;
  }
  
  /* 可扩展容器移动端优化 */
  .expandable-container {
    margin: 0;
  }
  
  .expandable-main,
  .expandable-details {
    padding: 16px;
    margin: 0;
  }
  
  .expandable-toggle {
    font-size: var(--font-size-sm);
    gap: 12px;
  }
  
  .expandable-toggle i:first-child {
    width: 20px;
    height: 20px;
    font-size: var(--font-size-xs);
  }
  
  /* 树状链接移动端优化 */
  .tree-links {
    padding-left: 4px;
  }
  
  .tree-item {
    margin-bottom: 8px;
  }
  
  .tree-item::before {
    left: -16px;
  }
  
  .tree-item::after {
    left: -16px;
  }
  
  .tree-main a {
    padding: 12px 16px;
    font-size: var(--font-size-sm);
    gap: 10px;
  }
  
  .tree-icon {
    font-size: var(--font-size-xs);
  }
  
  .resource-icon {
    width: 20px;
    height: 20px;
    font-size: var(--font-size-xs);
  }
  
  /* 树状描述移动端优化 */
  .tree-description {
    width: calc(100% + 32px);
    left: -16px;
    padding: 12px 16px;
    font-size: var(--font-size-xs);
  }
  
  .tree-description::before {
    left: 20px;
  }
  
  /* 资源站section移动端优化 */
  .resources-section {
    padding: 40px 16px;
  }
  
  /* 页脚移动端优化 */
  .footer {
    padding: 32px 0 20px;
  }
  
  .footer-content {
    gap: 20px;
    padding: 0 16px;
  }
  
  .footer-logo h2 {
    font-size: var(--font-size-base);
  }
  
  .footer-logo p {
    font-size: var(--font-size-sm);
  }
  
  .footer-info h3 {
    font-size: var(--font-size-sm);
    margin-bottom: 10px;
  }
  
  .footer-contact p {
    font-size: var(--font-size-sm);
    margin-bottom: 12px;
    gap: 6px;
  }
  
  .footer-contact i {
    font-size: var(--font-size-sm);
  }
  
  .social-links {
    gap: 8px;
  }
  
  .social-link {
    width: 36px;
    height: 36px;
    font-size: var(--font-size-sm);
  }
  
  .footer-bottom {
    padding-top: 16px;
    gap: 8px;
    font-size: var(--font-size-xs);
  }
  
  .footer-copyright p,
  .footer-beian p {
    font-size: var(--font-size-xs);
  }
  
  /* 触摸目标优化 */
  .social-link {
    width: 40px;
    height: 40px;
  }
  
  /* 防止文本溢出 */
  h1, h2, h3, h4, h5, h6 {
    word-wrap: break-word;
    hyphens: auto;
  }
}

/* 超小屏幕优化 */
@media (max-width: 480px) {
  .hero {
    padding: 100px 16px 50px;
  }
  
  .hero-content h1 {
    font-size: var(--font-size-2xl);
  }
  
  .section-header h2 {
    font-size: var(--font-size-xl);
  }
  
  .blog,
  .sitemap {
    padding: 50px 0;
  }
  
  .footer {
    padding: 32px 0 20px;
  }
}

/* 大屏幕优化 */
@media (min-width: 1200px) {
  .container {
    padding: 0 var(--spacing-lg);
  }
  
  .hero-content {
    max-width: 800px;
  }
  
  .blog-content {
    max-width: 800px;
  }
}

/* 滚动触发动画 */
.scroll-reveal {
  opacity: 0;
  transform: translateY(30px);
  transition: var(--transition-slow);
}

.scroll-reveal.visible {
  opacity: 1;
  transform: translateY(0);
}

/* 导航栏滚动效果增强 */
header {
  transition: var(--transition-slow);
}

/* 增强按钮交互 */
.cta,
.blog-button {
  user-select: none;
  -webkit-tap-highlight-color: transparent;
}

/* 卡片悬停效果增强 */
.sitemap-section {
  transition: var(--transition-slow);
}

.sitemap-section:hover {
  box-shadow: var(--shadow-hover);
}

/* 社交链接动画 */
.social-link {
  transition: var(--transition-slow);
}

.social-link:hover {
  transform: translateY(-4px) scale(1.15);
}

/* 滚动条样式优化 */
::-webkit-scrollbar {
  width: 8px;
  height: 8px;
}

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

::-webkit-scrollbar-thumb {
  background: var(--accent);
  border-radius: 4px;
  transition: var(--transition);
}

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

html {
  scrollbar-width: thin;
  scrollbar-color: var(--accent) var(--bg);
}

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

/* 防止闪烁 */
@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
  
  html {
    scroll-behavior: auto;
  }
}

/* 焦点样式增强 */
:focus-visible {
  outline: 3px solid var(--primary);
  outline-offset: 3px;
  border-radius: var(--radius-sm);
}

/* 触摸反馈 */
@media (hover: none) and (pointer: coarse) {
  .cta:active,
  .blog-button:active,
  .social-link:active {
    transform: scale(0.95);
  }
}

/* 资源站样式增强 */
.resources-container {
    max-height: 600px;
    overflow-y: auto;
    scrollbar-width: thin;
    scrollbar-color: var(--primary) var(--bg-tertiary);
}

/* 美化滚动条（针对WebKit浏览器） */
.resources-container::-webkit-scrollbar {
    width: 8px;
}

.resources-container::-webkit-scrollbar-track {
    background: var(--bg-tertiary);
    border-radius: var(--radius-sm);
}

.resources-container::-webkit-scrollbar-thumb {
    background: var(--primary);
    border-radius: var(--radius-sm);
}

.resources-container::-webkit-scrollbar-thumb:hover {
    background: var(--primary-hover);
}

/* 资源项样式优化 */
.resource-item {
    display: flex;
    align-items: center;
    gap: 16px;
    padding: 16px 20px;
    border-bottom: 1px solid var(--border-color);
    transition: var(--transition);
    cursor: pointer;
    background: var(--bg-secondary);
    border-radius: var(--radius-md);
    margin-bottom: 8px;
    min-height: 60px;
}

.resource-item:hover {
    background-color: var(--bg-hover);
    box-shadow: var(--shadow-medium);
    transform: translateY(-1px);
}

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

/* 文件项特殊样式 - 一行显示 */
.file-item {
    justify-content: space-between;
    padding: 12px 20px;
    gap: 24px; /* 增加三个div之间的间距 */
}

.file-item .resource-name {
    flex: 1;
    font-weight: 500;
    color: var(--text-primary);
    margin-right: 16px;
}

.file-item .resource-size {
    color: var(--text-secondary);
    font-size: var(--font-size-sm);
    margin-right: 16px;
    white-space: nowrap;
    flex-shrink: 0;
}

.file-item .resource-actions {
    flex-shrink: 0;
    min-width: 80px; /* 确保下载按钮区域有足够宽度 */
}

/* 目录项样式 */
.directory-item {
    cursor: pointer;
}

.directory-item .resource-icon {
    flex-shrink: 0;
    width: 24px;
    height: 24px;
    text-align: center;
    color: var(--primary);
    font-size: var(--font-size-base);
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--bg-tertiary);
    border-radius: var(--radius-sm);
}

.directory-item .resource-info {
    flex: 1;
}

.directory-item .resource-name-full {
    font-weight: 500;
    color: var(--text-primary);
}

.resource-toggle {
    background: none;
    border: none;
    color: var(--text-secondary);
    cursor: pointer;
    padding: 8px;
    border-radius: var(--radius-sm);
    transition: var(--transition);
    display: flex;
    align-items: center;
    justify-content: center;
    width: 32px;
    height: 32px;
}

.resource-toggle:hover {
    background-color: var(--bg-hover);
    color: var(--primary);
}

.resource-children {
    margin-left: 16px;
    padding-left: 24px;
    border-left: 2px solid var(--border-color);
    margin-top: 8px;
    animation: fadeIn 0.3s ease-out;
}

/* 目录项展开/折叠动画 */
@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(-8px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.resource-download {
    background-color: var(--primary);
    color: white;
    border: none;
    padding: 10px 16px;
    border-radius: var(--radius-md);
    cursor: pointer;
    text-decoration: none;
    font-size: var(--font-size-sm);
    transition: var(--transition);
    display: inline-flex;
    align-items: center;
    gap: 6px;
    font-weight: 500;
    box-shadow: var(--shadow-soft);
}

.resource-download:hover {
    background-color: var(--primary-hover);
    color: white;
    box-shadow: var(--shadow-medium);
    transform: translateY(-1px);
}

.resource-download:active {
    transform: translateY(0);
}

.empty-directory {
    color: var(--text-secondary);
    cursor: default;
}

.empty-directory:hover {
    background-color: transparent;
    box-shadow: none;
    transform: none;
}

.resources-controls {
  display: flex;
  gap: 16px;
  margin-bottom: 20px;
  flex-wrap: wrap;
  align-items: center;
}

.resources-search,
.resources-filter {
  flex: 1;
  min-width: 200px;
}

.resources-breadcrumb {
  background: var(--bg-secondary);
  padding: 12px 16px;
  border-radius: var(--radius-md);
  margin-bottom: 20px;
  font-size: var(--font-size-sm);
  display: flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
}

.resources-breadcrumb a {
  color: var(--primary);
  text-decoration: none;
  transition: var(--transition);
}

.resources-breadcrumb a:hover {
  color: var(--primary-hover);
  text-decoration: underline;
}

.resources-breadcrumb span {
  color: var(--text-secondary);
}

/* 资源项信息布局优化 */
.resource-info {
    display: flex;
    flex-direction: column;
    gap: 4px;
    flex: 1;
    min-width: 0;
}

.resource-name-full {
    font-weight: 500;
    color: var(--text-primary);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    font-size: var(--font-size-base);
}

.resource-details {
    font-size: var(--font-size-xs);
    color: var(--text-secondary);
    display: flex;
    gap: 12px;
    align-items: center;
    flex-wrap: wrap;
}

/* 响应式调整 */
@media (max-width: 768px) {
    .resource-item {
        padding: 12px 16px;
        gap: 12px;
        min-height: auto;
    }
    
    .resource-icon {
        width: 20px;
        height: 20px;
        font-size: var(--font-size-sm);
    }
    
    .resource-name-full {
        font-size: var(--font-size-sm);
    }
    
    .resource-details {
        font-size: var(--font-size-xs);
        gap: 8px;
    }
    
    .resource-download {
        padding: 8px 12px;
        font-size: var(--font-size-xs);
        gap: 4px;
    }
    
    .resource-toggle {
        width: 28px;
        height: 28px;
        padding: 6px;
    }
    
    .resources-controls {
        flex-direction: column;
        align-items: stretch;
    }
    
    .resources-search,
    .resources-filter {
        min-width: auto;
    }
    
    .resource-children {
        margin-left: 12px;
        padding-left: 16px;
    }
}

@media (max-width: 480px) {
    .resource-item {
        padding: 10px 12px;
        gap: 10px;
    }
    
    .resource-details {
        flex-direction: column;
        align-items: flex-start;
        gap: 4px;
    }
    
    .resource-download {
        padding: 6px 10px;
        font-size: var(--font-size-xs);
    }
    
    .resources-breadcrumb {
        font-size: var(--font-size-xs);
        padding: 10px 12px;
    }
}

.resources-breadcrumb a {
  color: var(--primary);
  text-decoration: none;
  margin-right: 10px;
}

.resources-breadcrumb a:after {
  content: " > ";
  color: var(--text-secondary);
  margin-left: 10px;
}

.resources-breadcrumb a:last-child:after {
  content: "";
  margin-left: 0;
}

.resources-list {
  background: var(--bg-secondary);
  border-radius: var(--radius-md);
}

/* 资源浏览器容器 */
.resource-browser {
  background: var(--bg-secondary);
  border-radius: var(--radius-lg);
  padding: 24px;
  box-shadow: var(--shadow-soft);
  border: 2px solid var(--border-color);
}

/* 资源工具栏 */
.resource-toolbar {
  display: flex;
  align-items: center;
  gap: 16px;
  margin-bottom: 20px;
  flex-wrap: wrap;
}

/* 搜索框 */
.search-box {
  flex: 1;
  min-width: 200px;
  position: relative;
  display: flex;
  align-items: center;
}

.search-icon {
  position: absolute;
  left: 16px;
  color: var(--text-secondary);
  font-size: var(--font-size-base);
  pointer-events: none;
}

.search-box input {
  width: 100%;
  padding: 12px 48px 12px 44px;
  background: var(--bg-tertiary);
  border: 2px solid var(--border-color);
  border-radius: var(--radius-md);
  font-size: var(--font-size-base);
  color: var(--text);
  transition: var(--transition);
  outline: none;
}

.search-box input::placeholder {
  color: var(--text-secondary);
}

.search-box input:focus {
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.1);
}

.search-clear {
  position: absolute;
  right: 12px;
  background: none;
  border: none;
  color: var(--text-secondary);
  cursor: pointer;
  padding: 4px;
  border-radius: var(--radius-sm);
  transition: var(--transition);
  display: flex;
  align-items: center;
  justify-content: center;
}

.search-clear:hover {
  background: var(--bg-hover);
  color: var(--text);
}

/* 视图控制按钮 */
.view-controls {
  display: flex;
  gap: 8px;
}

.view-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  background: var(--bg-tertiary);
  border: 2px solid var(--border-color);
  border-radius: var(--radius-md);
  color: var(--text-secondary);
  cursor: pointer;
  transition: var(--transition);
}

.view-btn:hover {
  background: var(--bg-hover);
  color: var(--primary);
  border-color: var(--primary);
  transform: translateY(-2px);
}

.view-btn.active {
  background: var(--primary);
  color: white;
  border-color: var(--primary);
}

/* 空状态 */
.empty-state {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 60px 20px;
  color: var(--text-secondary);
  text-align: center;
}

.empty-state i {
  font-size: 48px;
  margin-bottom: 16px;
  color: var(--border-color);
}

.empty-state p {
  font-size: var(--font-size-base);
  margin: 0;
}

.empty-state .empty-hint {
  font-size: var(--font-size-sm);
  color: var(--text-secondary);
  margin-top: 8px;
}

/* 资源空状态容器 */
.resource-empty {
  background: var(--bg-tertiary);
  border-radius: var(--radius-lg);
  padding: 40px 20px;
  box-shadow: var(--shadow-soft);
  border: 2px solid var(--border-color);
}

/* 加载状态样式 */
.loading-state {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 60px 20px;
  text-align: center;
  color: var(--text-secondary);
}

.loading-spinner {
  width: 48px;
  height: 48px;
  border: 4px solid var(--border-color);
  border-top-color: var(--primary);
  border-radius: 50%;
  animation: spin 1s linear infinite;
  margin-bottom: 16px;
}

@keyframes spin {
  to { transform: rotate(360deg); }
}

.loading-state p {
  margin: 0;
  font-size: var(--font-size-base);
  color: var(--text-secondary);
}

/* 错误状态样式 */
.error-state {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 60px 20px;
  text-align: center;
  color: var(--text-secondary);
}

.error-state i {
  font-size: 48px;
  color: #ef4444;
  margin-bottom: 16px;
}

.error-state p {
  margin: 0 0 20px 0;
  font-size: var(--font-size-base);
  color: var(--text-secondary);
  line-height: 1.5;
}

/* 重试按钮样式 */
.retry-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 10px 20px;
  background: linear-gradient(135deg, var(--primary), var(--accent));
  color: white;
  border: none;
  border-radius: var(--radius-md);
  font-size: var(--font-size-sm);
  font-weight: 500;
  cursor: pointer;
  transition: var(--transition);
  box-shadow: var(--shadow-medium);
}

.retry-btn:hover {
  background: linear-gradient(135deg, var(--primary-hover), var(--primary));
  transform: translateY(-2px);
  box-shadow: var(--shadow-hover);
}

.retry-btn:active {
  transform: translateY(0);
  box-shadow: var(--shadow-medium);
}

/* 禁用状态样式 */
input:disabled,
button:disabled {
  opacity: 0.6;
  cursor: not-allowed;
  pointer-events: none;
  background-color: var(--bg-tertiary);
  color: var(--text-tertiary);
}

/* 搜索匹配高亮 */
.tree-node.search-match .tree-node-content {
  background: rgba(59, 130, 246, 0.1);
  border-color: var(--primary);
}

.tree-node.search-match .tree-node-name {
  color: var(--primary);
  font-weight: 600;
}

/* 列表视图样式 */
.directory-tree.list-view {
  padding: 0;
}

.directory-tree.list-view .tree-node {
  margin: 0;
}

.directory-tree.list-view .tree-node-content {
  border-radius: 0;
  border-left: none;
  border-right: none;
  border-top: none;
  padding: 16px 20px;
}

.directory-tree.list-view .tree-node:first-child .tree-node-content {
  border-top-left-radius: var(--radius-sm);
  border-top-right-radius: var(--radius-sm);
}

.directory-tree.list-view .tree-node:last-child .tree-node-content {
  border-bottom: 1px solid var(--border-color);
  border-bottom-left-radius: var(--radius-sm);
  border-bottom-right-radius: var(--radius-sm);
}

.directory-tree.list-view .tree-children {
  padding-left: 20px;
  background: var(--bg-tertiary);
}

.directory-tree.list-view .tree-node-toggle {
  display: none;
}

.directory-tree.list-view .tree-node-content::before {
  display: none;
}

/* 面包屑导航 */
.breadcrumb {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 16px 20px;
  background: var(--bg-tertiary);
  border-radius: var(--radius-md);
  margin-bottom: 20px;
  flex-wrap: wrap;
  box-shadow: var(--shadow-soft);
}

.breadcrumb-item {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 8px 16px;
  background: var(--bg-secondary);
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: var(--transition);
  font-size: var(--font-size-sm);
  font-weight: 500;
  color: var(--text);
  border: 1px solid var(--border-color);
}

.breadcrumb-item:hover {
  background: var(--bg-hover);
  color: var(--primary);
  border-color: var(--primary);
  transform: translateY(-2px);
  box-shadow: var(--shadow-medium);
}

.breadcrumb-item i {
  color: var(--primary);
}

.breadcrumb-separator {
  color: var(--text-secondary);
  font-size: var(--font-size-sm);
  display: flex;
  align-items: center;
}

/* 目录树容器 */
.directory-tree {
  background: var(--bg-tertiary);
  border-radius: var(--radius-md);
  padding: 16px;
  max-height: 600px;
  overflow-y: auto;
  box-shadow: var(--shadow-soft);
}

/* 自定义滚动条 */
.directory-tree::-webkit-scrollbar {
  width: 8px;
}

.directory-tree::-webkit-scrollbar-track {
  background: var(--bg-secondary);
  border-radius: 4px;
}

.directory-tree::-webkit-scrollbar-thumb {
  background: var(--border-color);
  border-radius: 4px;
}

.directory-tree::-webkit-scrollbar-thumb:hover {
  background: var(--text-secondary);
}

/* 树节点 */
.tree-node {
  margin: 4px 0;
  transition: var(--transition);
}

.tree-node-content {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 12px 16px;
  background: var(--bg-secondary);
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: var(--transition);
  border: 1px solid transparent;
  position: relative;
  overflow: hidden;
}

.tree-node-content::before {
  content: '';
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 3px;
  background: var(--primary);
  transform: scaleY(0);
  transition: var(--transition);
}

.tree-node-content:hover {
  background: var(--bg-hover);
  border-color: var(--border-color);
  transform: translateX(4px);
  box-shadow: var(--shadow-soft);
}

.tree-node-content:hover::before {
  transform: scaleY(1);
}

.tree-node.highlight .tree-node-content {
  background: var(--bg-hover);
  border-color: var(--primary);
  animation: highlightPulse 0.6s ease-out;
}

@keyframes highlightPulse {
  0%, 100% {
    box-shadow: var(--shadow-soft);
  }
  50% {
    box-shadow: 0 0 0 4px rgba(59, 130, 246, 0.3);
  }
}

/* 文件夹节点 */
.folder-node .tree-node-content {
  font-weight: 600;
}

.folder-node .tree-node-icon {
  color: #FCD34D;
}

.folder-node .tree-node-icon i {
  font-size: var(--font-size-lg);
  transition: var(--transition);
}

.folder-node .tree-node-icon i.fa-folder-open {
  color: #F59E0B;
}

/* 文件节点 */
.file-node .tree-node-content {
  font-weight: 400;
}

.file-node .tree-node-icon {
  color: var(--primary);
}

.file-node .tree-node-icon i {
  font-size: var(--font-size-base);
}

/* 树节点切换图标 */
.tree-node-toggle {
  width: 20px;
  height: 20px;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.tree-toggle-icon {
  font-size: var(--font-size-xs);
  color: var(--text-secondary);
  transition: var(--transition);
}

.tree-toggle-icon.rotated {
  transform: rotate(90deg);
  color: var(--primary);
}

/* 树节点图标 */
.tree-node-icon {
  width: 32px;
  height: 32px;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

/* 树节点名称 */
.tree-node-name {
  flex: 1;
  font-size: var(--font-size-base);
  color: var(--text);
  transition: var(--transition);
}

.tree-node-content:hover .tree-node-name {
  color: var(--primary);
}

/* 树节点大小 */
.tree-node-size {
  font-size: var(--font-size-xs);
  color: var(--text-secondary);
  padding: 4px 8px;
  background: var(--bg-tertiary);
  border-radius: var(--radius-sm);
  font-weight: 500;
}

/* 树节点操作按钮 */
.tree-node-actions {
  display: flex;
  gap: 8px;
  opacity: 0;
  transform: translateX(-10px);
  transition: var(--transition);
}

.tree-node-content:hover .tree-node-actions {
  opacity: 1;
  transform: translateX(0);
}

.tree-download-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 32px;
  height: 32px;
  background: var(--primary);
  color: white;
  border-radius: var(--radius-sm);
  transition: var(--transition);
  border: none;
  cursor: pointer;
  text-decoration: none;
}

.tree-download-btn:hover {
  background: var(--primary-hover);
  transform: scale(1.1);
  box-shadow: var(--shadow-medium);
}

.tree-download-btn i {
  font-size: var(--font-size-sm);
}

/* 树子节点容器 */
.tree-children {
  display: none;
  overflow: hidden;
  transition: all 0.3s ease;
}

.tree-children.expanded {
  display: block;
  animation: expandTree 0.3s ease-out;
}

@keyframes expandTree {
  from {
    opacity: 0;
    transform: translateY(-10px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* 响应式设计 */
@media (max-width: 992px) {
  .resource-toolbar {
    flex-direction: column;
    align-items: stretch;
  }
  
  .view-controls {
    justify-content: flex-end;
  }
}

@media (max-width: 768px) {
  .resource-browser {
    padding: 16px;
  }
  
  .resource-toolbar {
    gap: 12px;
  }
  
  .search-box {
    min-width: 100%;
  }
  
  .search-box input {
    padding: 10px 40px 10px 40px;
    font-size: var(--font-size-sm);
  }
  
  .search-icon {
    left: 12px;
    font-size: var(--font-size-sm);
  }
  
  .search-clear {
    right: 8px;
    width: 28px;
    height: 28px;
  }
  
  .view-btn {
    width: 36px;
    height: 36px;
  }
  
  .breadcrumb {
    padding: 12px 16px;
    gap: 6px;
    margin-bottom: 16px;
  }
  
  .breadcrumb-item {
    padding: 6px 12px;
    font-size: var(--font-size-xs);
  }
  
  .directory-tree {
    padding: 12px;
    max-height: 400px;
  }
  
  .tree-node-content {
    padding: 10px 12px;
    gap: 8px;
  }
  
  .tree-node-name {
    font-size: var(--font-size-sm);
  }
  
  .tree-node-size {
    display: none;
  }
  
  .tree-node-actions {
    opacity: 1;
    transform: translateX(0);
  }
  
  .empty-state {
    padding: 40px 20px;
  }
  
  .empty-state i {
    font-size: 36px;
  }
  
  .empty-state p {
    font-size: var(--font-size-sm);
  }
}

@media (max-width: 480px) {
  .resource-browser {
    padding: 12px;
  }
  
  .resource-toolbar {
    gap: 10px;
  }
  
  .search-box input {
    padding: 8px 36px 8px 36px;
    font-size: var(--font-size-xs);
  }
  
  .search-icon {
    left: 10px;
  }
  
  .search-clear {
    right: 6px;
    width: 24px;
    height: 24px;
  }
  
  .view-btn {
    width: 32px;
    height: 32px;
  }
  
  .view-btn i {
    font-size: var(--font-size-sm);
  }
  
  .breadcrumb {
    padding: 10px 12px;
    gap: 4px;
    margin-bottom: 12px;
  }
  
  .breadcrumb-item {
    padding: 4px 10px;
    font-size: var(--font-size-xs);
  }
  
  .breadcrumb-separator {
    font-size: var(--font-size-xs);
  }
  
  .directory-tree {
    padding: 8px;
    max-height: 350px;
  }
  
  .tree-node-content {
    padding: 8px 10px;
    gap: 6px;
  }
  
  .tree-node-icon {
    width: 28px;
    height: 28px;
  }
  
  .tree-node-icon i {
    font-size: var(--font-size-sm);
  }
  
  .tree-node-name {
    font-size: var(--font-size-xs);
  }
  
  .tree-node-toggle {
    width: 16px;
    height: 16px;
  }
  
  .tree-toggle-icon {
    font-size: 10px;
  }
  
  .tree-download-btn {
    width: 28px;
    height: 28px;
  }
  
  .tree-download-btn i {
    font-size: 10px;
  }
  
  .empty-state {
    padding: 30px 16px;
  }
  
  .empty-state i {
    font-size: 32px;
    margin-bottom: 12px;
  }
  
  .empty-state p {
    font-size: var(--font-size-xs);
  }
}

/* 触摸设备优化 */
@media (hover: none) and (pointer: coarse) {
  .tree-node-actions {
    opacity: 1;
    transform: translateX(0);
  }
  
  .tree-node-content:active {
    background: var(--bg-hover);
  }
  
  .breadcrumb-item:active {
    background: var(--bg-hover);
  }
  
  .view-btn:active {
    transform: scale(0.95);
  }
  
  .search-clear:active {
    background: var(--bg-hover);
  }
}

/* 打印样式 */
@media print {
  .resource-toolbar,
  .breadcrumb {
    display: none;
  }
  
  .directory-tree {
    max-height: none;
    overflow: visible;
  }
  
  .tree-node-actions {
    display: none;
  }
  
  .tree-node-content {
    page-break-inside: avoid;
  }
}