/**
 * TechBlue 导航站 v7.3.9 - 完整样式表
 * 三栏布局 | 毛玻璃 | Bento Grid | 暗色模式 | 响应式 | 竞品融合
 *
 * @author Zhang1211 & AI Partner
 * @version 7.3.8
 * @date 2026-05-13
 * 
 * v6.0更新：
 * - 新增：滚动进度条、数据统计面板、搜索下拉
 * - 新增：收藏夹、最近浏览、今日推荐
 * - 新增：骨架屏加载、空状态插画
 * - 新增：视图密度切换、标签徽章系统
 * - 增强：卡片悬浮效果、暗色模式细节
 */

/* ================================================================
   0. CSS 变量系统（v6.0增强）
   ================================================================ */
:root {
  /* 主色 */
  --primary-blue: #3B82F6;
  --primary-orange: #F97316;
  --primary-purple: #8B5CF6;
  --primary-green: #10B981;
  --primary-pink: #EC4899;
  --primary-red: #EF4444;
  --primary-cyan: #06B6D4;

  /* 渐变 */
  --gradient-main: linear-gradient(135deg, #3B82F6, #8B5CF6);
  --gradient-warm: linear-gradient(135deg, #F97316, #EF4444);
  --gradient-cool: linear-gradient(135deg, #06B6D4, #3B82F6);
  --gradient-green: linear-gradient(135deg, #10B981, #34D399);
  --gradient-pink: linear-gradient(135deg, #EC4899, #F472B6);

  /* 背景 */
  --bg-main: #f0f4f8;
  --bg-card: #ffffff;
  --bg-sidebar: rgba(255, 255, 255, 0.92);
  --bg-glass: rgba(255, 255, 255, 0.75);
  --bg-input: #f8fafc;
  --bg-hover: rgba(59, 130, 246, 0.05);

  /* 文字 */
  --text-primary: #1e293b;
  --text-secondary: #64748b;
  --text-muted: #5e718a;
  --text-inverse: #ffffff;

  /* 边框 */
  --border-color: #e2e8f0;
  --border-light: #f1f5f9;

  /* 阴影 */
  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.07), 0 2px 4px -2px rgba(0, 0, 0, 0.05);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.08), 0 4px 6px -4px rgba(0, 0, 0, 0.05);
  --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 8px 10px -6px rgba(0, 0, 0, 0.06);
  --card-shadow: 0 1px 3px rgba(0, 0, 0, 0.06), 0 1px 2px rgba(0, 0, 0, 0.04);
  --card-shadow-hover: 0 12px 28px rgba(59, 130, 246, 0.15), 0 4px 12px rgba(0, 0, 0, 0.08);

  /* 圆角 */
  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 14px;
  --radius-xl: 20px;
  --radius-full: 9999px;

  /* 布局 */
  --sidebar-width: 220px;
  --rightbar-width: 260px;
  --topbar-height: 56px;
  --content-max-width: 1440px;

  /* 过渡 */
  --transition-fast: 0.15s ease;
  --transition-normal: 0.3s ease;
  --transition-slow: 0.5s ease;
  --transition-spring: 0.4s cubic-bezier(0.34, 1.56, 0.64, 1);

  /* 字体 */
  --font-sans: 'DM Sans', 'Noto Sans SC', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --font-mono: 'JetBrains Mono', 'Fira Code', Consolas, monospace;

  /* 毛玻璃 */
  --glass-blur: blur(20px);
  --glass-bg: rgba(255, 255, 255, 0.75);
  --glass-border: rgba(255, 255, 255, 0.45);

  /* v6.0新增 */
  --progress-color: var(--gradient-main);
  --badge-hot-bg: linear-gradient(135deg, #EF4444, #F97316);
  --badge-new-bg: linear-gradient(135deg, #8B5CF6, #A78BFA);
  --badge-free-bg: linear-gradient(135deg, #10B981, #34D399);
  --badge-official-bg: linear-gradient(135deg, #3B82F6, #60A5FA);
}

/* ================================================================
   暗色模式（v6.0增强）
   ================================================================ */
[data-theme="dark"] {
  --bg-main: #0c1222;
  --bg-card: #151d2e;
  --bg-sidebar: rgba(15, 23, 42, 0.95);
  --bg-glass: rgba(15, 23, 42, 0.80);
  --bg-input: #1e293b;
  --bg-hover: rgba(59, 130, 246, 0.08);

  --text-primary: #f1f5f9;
  --text-secondary: #94a3b8;
  --text-muted: #5e718a;

  --border-color: #1e293b;
  --border-light: #15202d;

  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.35);
  --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.45);
  --shadow-lg: 0 10px 15px rgba(0, 0, 0, 0.55);
  --shadow-xl: 0 20px 25px rgba(0, 0, 0, 0.65);
  --card-shadow: 0 1px 3px rgba(0, 0, 0, 0.35);
  --card-shadow-hover: 0 12px 28px rgba(59, 130, 246, 0.25), 0 4px 12px rgba(0, 0, 0, 0.35);

  --glass-bg: rgba(15, 23, 42, 0.80);
  --glass-border: rgba(51, 65, 85, 0.55);
}

/* ================================================================
   1. 基础重置 & 排版
   ================================================================ */
*, *::before, *::after {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  font-size: 16px;
  -webkit-text-size-adjust: 100%;
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-sans);
  background: var(--bg-main);
  color: var(--text-primary);
  line-height: 1.6;
  min-height: 100vh;
  transition: background var(--transition-normal), color var(--transition-normal);
  overflow-x: hidden;
}

a {
  color: var(--primary-blue);
  text-decoration: none;
  transition: color var(--transition-fast);
}

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

img {
  max-width: 100%;
  display: block;
}

button {
  cursor: pointer;
  border: none;
  background: none;
  font-family: inherit;
  font-size: inherit;
}

input, textarea, select {
  font-family: inherit;
  font-size: inherit;
}

::selection {
  background: rgba(59, 130, 246, 0.25);
  color: var(--text-primary);
}

/* 自定义滚动条 */
::-webkit-scrollbar { width: 6px; height: 6px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: var(--text-muted); border-radius: 3px; }
::-webkit-scrollbar-thumb:hover { background: var(--text-secondary); }

/* ================================================================
   2. v6.0新增：滚动进度条
   ================================================================ */
.reading-progress {
  position: fixed;
  top: 0;
  left: 0;
  width: 0%;
  height: 3px;
  background: var(--progress-color);
  z-index: 9999;
  transition: width 0.1s linear;
  border-radius: 0 3px 3px 0;
}

[data-theme="dark"] .reading-progress {
  box-shadow: 0 0 8px rgba(59, 130, 246, 0.5);
}

/* ================================================================
   3. 整体布局
   ================================================================ */
.app-layout { display: flex; min-height: 100vh; }

.sidebar {
  position: fixed;
  top: 0;
  left: 0;
  width: var(--sidebar-width);
  height: 100vh;
  background: var(--bg-sidebar);
  backdrop-filter: var(--glass-blur);
  -webkit-backdrop-filter: var(--glass-blur);
  border-right: 1px solid var(--border-color);
  display: flex;
  flex-direction: column;
  z-index: 100;
  transition: transform var(--transition-normal), background var(--transition-normal);
  overflow: hidden;
}

.main-content {
  flex: 1;
  margin-left: var(--sidebar-width);
  display: flex;
  flex-direction: column;
  min-height: 100vh;
  transition: margin-left var(--transition-normal);
}

/* [v7.6.8] 左侧导航栏收起/展开 */
body.sidebar-collapsed .sidebar { transform: translateX(-100%); }
body.sidebar-collapsed .main-content { margin-left: 0; }
.sidebar-toggle-btn {
  background: none;
  border: none;
  color: var(--text-secondary);
  font-size: 16px;
  cursor: pointer;
  padding: 4px 8px;
  margin-right: 8px;
  border-radius: var(--radius-sm);
  transition: all var(--transition-fast);
}
.sidebar-toggle-btn:hover {
  background: var(--bg-hover);
  color: var(--primary-blue);
}

.content-wrapper {
  display: flex;
  flex: 1;
  width: 100%;
  gap: 24px;
  padding: 0 24px 24px;
  padding-right: calc(var(--rightbar-width) + 40px);
  justify-content: flex-start;
}

.content-main {
  flex: 1;
  min-width: 0;
}

.sidebar-right {
  width: var(--rightbar-width);
  flex-shrink: 0;
  position: fixed;
  right: 0;
  top: var(--topbar-height);
  height: calc(100vh - var(--topbar-height));
  overflow-y: auto; /* [v8.2.3] 整体滚动条（跟整体滚动） */
  padding: 20px 16px;
  z-index: 50;
  background: var(--bg-sidebar);
  backdrop-filter: var(--glass-blur);
  -webkit-backdrop-filter: var(--glass-blur);
  border-left: 1px solid var(--border-color);
  display: flex;
  flex-direction: column;
  gap: 12px;
}

/* [v8.2.3] 美化右侧栏整体滚动条 */
.sidebar-right::-webkit-scrollbar { width: 5px; }
.sidebar-right::-webkit-scrollbar-track { background: transparent; }
.sidebar-right::-webkit-scrollbar-thumb {
  background: rgba(100, 120, 150, 0.35);
  border-radius: 10px;
}
.sidebar-right::-webkit-scrollbar-thumb:hover {
  background: rgba(100, 120, 150, 0.55);
}

/* [v8.2.5] 折叠/展开方案：max-height + 内部滚动
   折叠态有限预览+可滚动，展开态显示更多 */
.sidebar-right .news-section {
  flex: 0 0 auto;
  display: flex;
  flex-direction: column;
}
.sidebar-right .hotlist-content,
.sidebar-right .today-rec-content,
.sidebar-right .global-news-content,
.sidebar-right .news-dynamic-content,
.sidebar-right .today-history-content {
  overflow-y: auto !important;
}

/* 折叠态高度 */
.sidebar-right .hotlist-content { max-height: 220px; min-height: 0; }       /* 微博热点 ≈4条 */
.sidebar-right .global-news-content { max-height: 350px; }   /* 全球热点 ≈9条 亮点 */
.sidebar-right .today-rec-content { max-height: 380px; }        /* 今日推荐 ≈6条 */
.sidebar-right .news-dynamic-content { max-height: 220px; }  /* 资讯动态 ≈6条 */
.sidebar-right .today-history-content { max-height: 310px; padding: 8px 10px; } /* 历史上的今天 ≈8条 */

/* 展开态：显示更多 */
.news-section.expanded .hotlist-content { max-height: 500px; }
.news-section.expanded .global-news-content { max-height: 800px; } /* 亮点全部显示 */
.news-section.expanded .today-rec-content { max-height: 600px; }
.news-section.expanded .news-dynamic-content { max-height: 500px; }
.news-section.expanded .today-history-content { max-height: 600px; }

/* ================================================================
   4. 顶部栏（Sticky + 滚动压缩 + v6.0增强）
   ================================================================ */
.top-bar {
  position: sticky;
  top: 0;
  z-index: 90;
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: var(--topbar-height);
  padding: 0 24px;
  background: var(--bg-glass);
  backdrop-filter: var(--glass-blur);
  -webkit-backdrop-filter: var(--glass-blur);
  border-bottom: 1px solid var(--border-color);
  box-shadow: 0 1px 4px rgba(0,0,0,0.04);
  transition: height var(--transition-normal), background var(--transition-normal), box-shadow var(--transition-normal), padding var(--transition-normal);
}

.top-bar.shrunk {
  height: 46px;
  padding-top: 4px;
  padding-bottom: 4px;
}

.breadcrumb {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 13px;
  color: var(--text-secondary);
}

.breadcrumb a { color: var(--text-secondary); }
.breadcrumb a:hover { color: var(--primary-blue); }
.breadcrumb span { color: var(--text-muted); }

.top-bar-right {
  display: flex;
  align-items: center;
  gap: 12px;
}

.top-notice {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 13px;
  color: var(--text-secondary);
  max-width: 300px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  padding: 6px 12px;
  background: rgba(245, 158, 11, 0.08);
  border-radius: var(--radius-full);
  border: 1px solid rgba(245, 158, 11, 0.15);
}

.notice-badge {
  display: inline-flex;
  align-items: center;
  padding: 2px 8px;
  font-size: 11px;
  font-weight: 600;
  color: #fff;
  background: var(--gradient-warm);
  border-radius: var(--radius-full);
  flex-shrink: 0;
  animation: notice-pulse 2s ease-in-out infinite;
}

@keyframes notice-pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.7; }
}

.notice-close {
  margin-left: 6px;
  color: var(--text-muted);
  font-size: 14px;
  line-height: 1;
  opacity: 0.6;
  transition: opacity var(--transition-fast);
}
.notice-close:hover { opacity: 1; }

/* v6.0新增：视图密度切换器 */
.view-density-picker {
  display: flex;
  align-items: center;
  gap: 2px;
  padding: 3px;
  background: var(--bg-input);
  border-radius: var(--radius-md);
  border: 1px solid var(--border-color);
}

.density-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 28px;
  height: 26px;
  border-radius: 6px;
  color: var(--text-muted);
  font-size: 12px;
  transition: all var(--transition-fast);
}

.density-btn:hover { color: var(--text-secondary); background: var(--border-color); }
.density-btn.active { 
  color: var(--primary-blue); 
  background: var(--bg-card); 
  box-shadow: var(--shadow-sm);
}

/* 暗色切换按钮 */
.theme-toggle {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  border-radius: var(--radius-md);
  color: var(--text-secondary);
  transition: all var(--transition-fast);
}

.theme-toggle:hover {
  background: var(--border-color);
  color: var(--primary-blue);
  transform: rotate(15deg);
}

.theme-toggle:active { transform: scale(0.92); }

/* ================================================================
   5. 左侧导航（v6.0增强）
   ================================================================ */

/* Logo 区 */
.sidebar .logo {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 14px 18px 10px;
  border-bottom: 1px solid var(--border-light);
  flex-shrink: 0;
}

.sidebar .logo a {
  display: flex;
  align-items: center;
  gap: 10px;
  color: var(--text-primary);
  font-weight: 700;
  letter-spacing: -0.02em;
}

.sidebar .logo a i {
  font-size: 22px;
  color: var(--primary-blue);
  font-family: "Font Awesome 6 Free", "FontAwesome";
  font-weight: 900;
}

/* 上下布局：英文在上、中文在下 */
.sidebar .logo a .logo-text {
  display: flex;
  flex-direction: column;
  line-height: 1.15;
}

.sidebar .logo a .logo-en {
  font-size: 18px;
  font-weight: 700;
  color: var(--text-primary);
  letter-spacing: -0.02em;
  line-height: 1.25;
}

.sidebar .logo a .logo-cn {
  font-size: 12px;
  font-weight: 600;
  color: var(--text-muted);
  letter-spacing: 0.04em;
  line-height: 1.2;
}

/* v6.0新增：版本号标识 */
.version-badge {
  display: inline-flex;
  align-items: center;
  padding: 2px 7px;
  font-size: 10px;
  font-weight: 600;
  color: #fff;
  background: var(--gradient-main);
  border-radius: var(--radius-full);
  letter-spacing: 0;
  margin-left: auto;
}

/* 导航菜单 */
.sidebar-nav { flex: 1; overflow-y: auto; overflow-x: hidden; padding: 8px 0; }

.nav-item-wrap { position: relative; }

.nav-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 14px;
  min-height: 44px;
  margin: 1px 8px;
  border-radius: var(--radius-md);
  color: var(--text-secondary);
  font-size: 13.5px;
  transition: all var(--transition-fast);
  user-select: none;
}

.nav-item:hover { background: var(--bg-hover); color: var(--text-primary); }

.nav-item.active {
  background: rgba(59, 130, 246, 0.10);
  color: var(--primary-blue);
  font-weight: 600;
}

.nav-item.active::before {
  content: '';
  position: absolute;
  left: 0;
  top: 50%;
  transform: translateY(-50%);
  width: 3px;
  height: 22px;
  background: var(--gradient-main);
  border-radius: 0 3px 3px 0;
}

.nav-item-main {
  display: flex;
  align-items: center;
  gap: 10px;
  flex: 1;
  min-width: 0;
  color: inherit;
  text-decoration: none;
}

.nav-item-main i { width: 18px; text-align: center; font-size: 14px; flex-shrink: 0; }
.nav-item-main span { white-space: nowrap; line-height: 1.4; }

/* 导航计数徽标 */
.nav-badge {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 20px;
  height: 18px;
  padding: 0 5px;
  font-size: 11px;
  font-weight: 600;
  border-radius: var(--radius-full);
  background: var(--border-color);
  color: var(--text-muted);
  flex-shrink: 0;
  transition: background var(--transition-fast);
}

.nav-item.active .nav-badge { background: rgba(59, 130, 246, 0.15); color: var(--primary-blue); }
.nav-badge-zero { opacity: 0.5; }

/* 展开/折叠箭头 */
.nav-toggle {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  font-size: 12px;
  color: var(--text-muted);
  transition: transform var(--transition-normal);
  flex-shrink: 0;
  cursor: pointer;
}

.nav-item-wrap.open .nav-toggle { transform: rotate(90deg); }

/* 二级子菜单 */
.nav-sub-menu {
  max-height: 0;
  overflow: hidden;
  transition: max-height var(--transition-normal);
}

.nav-item-wrap.open .nav-sub-menu { max-height: 500px; }

.nav-sub-item {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 10px 14px 10px 42px;
  margin: 0 8px;
  font-size: 12.5px;
  color: var(--text-muted);
  border-radius: var(--radius-sm);
  transition: all var(--transition-fast);
  text-decoration: none;
  min-height: 44px;
}

.nav-sub-item:hover { background: var(--bg-hover); color: var(--text-primary); }
.nav-sub-item i { font-size: 11px; width: 14px; text-align: center; color: var(--text-muted); }

/* [v7.3.8] 大屏二级分类预览 */
.nav-preview-card {
  position: fixed;
  left: calc(var(--sidebar-width) + 4px);
  top: auto;
  width: 240px;
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-xl);
  padding: 12px;
  z-index: 150;
  opacity: 0;
  visibility: hidden;
  transform: translateX(-8px);
  transition: all var(--transition-fast);
  pointer-events: none;
}

.nav-preview-card.visible {
  opacity: 1;
  visibility: visible;
  transform: translateX(0);
}

.nav-preview-title {
  font-size: 13px;
  font-weight: 600;
  color: var(--text-primary);
  padding-bottom: 8px;
  margin-bottom: 8px;
  border-bottom: 1px solid var(--border-light);
  display: flex;
  align-items: center;
  gap: 6px;
}

.nav-preview-title i { color: var(--primary-blue); }

.nav-preview-list {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.nav-preview-item {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 6px 8px;
  border-radius: var(--radius-sm);
  color: var(--text-secondary);
  font-size: 12px;
  text-decoration: none;
  transition: all var(--transition-fast);
  white-space: nowrap;
}

.nav-preview-item:hover {
  background: var(--bg-hover);
  color: var(--primary-blue);
}

.nav-preview-count {
  font-size: 10px;
  color: var(--text-muted);
  margin-left: auto;
  background: var(--bg-input);
  padding: 1px 6px;
  border-radius: var(--radius-full);
}

@media (max-width: 1399px) {
  .nav-preview-card { display: none !important; }
}

/* v6.0新增：侧边栏底部统计 */
.sidebar-footer {
  flex-shrink: 0;
  padding: 12px 14px;
  border-top: 1px solid var(--border-light);
}

.user-mini { display: flex; align-items: center; gap: 10px; }

.user-avatar {
  width: 36px;
  height: 36px;
  border-radius: var(--radius-md);
  background: var(--gradient-main);
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 15px;
  font-weight: 700;
  flex-shrink: 0;
}

.user-name { font-size: 13px; font-weight: 600; color: var(--text-primary); }
.user-desc { font-size: 11px; color: var(--text-muted); }

/* v7.4.2优化：底部版本号 - 小号、不抢眼 */
.footer-version {
  font-size: 9px;
  color: var(--text-muted);
  opacity: 0.55;
  margin-left: 3px;
  font-weight: 400;
  letter-spacing: 0;
}

/* v6.0新增：侧边栏快捷统计 */
.sidebar-stats {
  display: flex;
  gap: 8px;
  margin-top: 10px;
  padding-top: 10px;
  border-top: 1px dashed var(--border-light);
}

.stat-item {
  flex: 1;
  display: flex;
  align-items: center;
  gap: 4px;
  padding: 4px 8px;
  background: var(--bg-input);
  border-radius: var(--radius-sm);
  font-size: 11px;
  color: var(--text-muted);
}

.stat-item i { font-size: 10px; color: var(--primary-blue); }

/* ================================================================
   6. 英雄区 - 时间天气 + 搜索 + 一言（v6.0增强）
   ================================================================ */

/* [v7.6.8] 锚点跳转顶部偏移：避免跳转后分类标题被顶部内容遮挡 */
.category-section { scroll-margin-top: 90px; }

/* 时间天气栏 */
.datetime-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 20px 24px;
  margin-bottom: 16px;
  background: var(--bg-card);
  border-radius: var(--radius-lg);
  box-shadow: var(--card-shadow);
  border: 1px solid var(--border-color);
  transition: all var(--transition-normal);
  position: relative;
  overflow: hidden;
}

.datetime-bar::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: var(--gradient-main);
  opacity: 0.6;
}

.datetime-left {
  display: flex;
  align-items: center;
  gap: 16px;
  flex-wrap: wrap;
}

.time-big {
  font-size: 38px;
  font-weight: 700;
  letter-spacing: -0.03em;
  background: var(--gradient-main);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  line-height: 1.1;
  font-variant-numeric: tabular-nums;
}

.date-info { display: flex; flex-direction: column; gap: 2px; }
.date-main { font-size: 14px; font-weight: 500; color: var(--text-primary); }
.date-lunar { font-size: 12px; color: var(--text-muted); }

.week-badge {
  display: inline-flex;
  align-items: center;
  padding: 5px 14px;
  font-size: 13px;
  font-weight: 600;
  color: var(--primary-blue);
  background: rgba(59, 130, 246, 0.08);
  border-radius: var(--radius-full);
  border: 1px solid rgba(59, 130, 246, 0.12);
}

.ip-location-bar {
  display: flex;
  align-items: center;
  gap: 14px;
  font-size: 12px;
  color: var(--text-muted);
}

.ip-item i { margin-right: 3px; font-size: 11px; }
.ip-value { color: var(--text-secondary); font-family: var(--font-mono); font-size: 11px; }

.weather-info {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 14px;
  color: var(--text-secondary);
  padding: 6px 12px;
  background: var(--bg-input);
  border-radius: var(--radius-full);
}

.weather-icon { font-size: 22px; }

/* 搜索区（v6.0增强） */
.search-section { margin-bottom: 16px; position: relative; }

.search-glass {
  display: flex;
  align-items: center;
  background: var(--bg-glass);
  backdrop-filter: var(--glass-blur);
  -webkit-backdrop-filter: var(--glass-blur);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-xl);
  padding: 4px;
  box-shadow: var(--shadow-md);
  transition: all var(--transition-fast);
}

.search-glass:focus-within {
  border-color: var(--primary-blue);
  box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.12), var(--shadow-md);
}

/* 搜索引擎选择器 */
.search-engine-pick {
  position: relative;
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 8px 12px;
  font-size: 13px;
  font-weight: 500;
  color: var(--text-primary);
  cursor: pointer;
  border-radius: var(--radius-lg);
  transition: background var(--transition-fast);
  flex-shrink: 0;
  white-space: nowrap;
}

.search-engine-pick:hover { background: var(--bg-hover); }
.search-engine-pick .arrow { font-size: 10px; color: var(--text-muted); transition: transform var(--transition-fast); }

/* 引擎选择区域（v7.6.5 恢复v7.5.2下拉设计） */
.engine-dropdown {
  display: none;
  width: 100%;
  padding: 10px 12px;
  background: var(--bg-card, #fff);
  border: 1px solid var(--border-color, #e2e8f0);
  border-radius: var(--radius-md, 12px);
  box-shadow: var(--shadow-md, 0 4px 12px rgba(0,0,0,0.1));
  margin-top: 10px;
  gap: 8px;
  flex-wrap: wrap;
  align-items: center;
  z-index: 999;
}
.engine-dropdown.show { display: flex; }

.engine-option {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 6px 12px;
  font-size: 13px;
  color: var(--text-secondary);
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: all var(--transition-fast);
  white-space: nowrap;
  border: 1px solid transparent;
}

.engine-option:hover { background: var(--bg-hover); color: var(--text-primary); border-color: var(--border-color); }
.engine-option.active { color: var(--primary-blue); font-weight: 600; background: rgba(59, 130, 246, 0.08); border-color: rgba(59, 130, 246, 0.2); }

/* 搜索输入框 */
.search-input-wrap {
  display: flex;
  align-items: center;
  flex: 1;
  min-width: 0;
  padding: 0 12px;
  gap: 8px;
}

.search-icon { color: var(--text-muted); font-size: 14px; flex-shrink: 0; }

.search-input {
  flex: 1;
  min-width: 0;
  border: none;
  outline: none;
  background: transparent;
  color: var(--text-primary);
  font-size: 14.5px;
  line-height: 1.5;
}

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

.search-shortcut-hint { font-size: 12px; color: var(--text-muted); flex-shrink: 0; white-space: nowrap; }

.search-shortcut-hint kbd {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 20px;
  height: 20px;
  padding: 0 5px;
  font-size: 11px;
  font-family: var(--font-mono);
  background: var(--border-color);
  border-radius: 4px;
  color: var(--text-secondary);
}

/* v6.0新增：搜索清除按钮 */
.search-clear-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 20px;
  height: 20px;
  color: var(--text-muted);
  font-size: 14px;
  border-radius: 50%;
  transition: all var(--transition-fast);
  flex-shrink: 0;
}

.search-clear-btn:hover { color: var(--text-primary); background: var(--border-color); }

/* 搜索按钮 */
.search-go-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 42px;
  height: 42px;
  border-radius: var(--radius-lg);
  background: var(--gradient-main);
  color: #fff;
  font-size: 16px;
  flex-shrink: 0;
  transition: all var(--transition-fast);
}

.search-go-btn:hover { transform: scale(1.05); box-shadow: 0 4px 16px rgba(59, 130, 246, 0.35); }
.search-go-btn:active { transform: scale(0.96); }

/* 百度搜索建议 */
.sug-box {
  position: absolute;
  top: 100%;
  left: 0;
  right: 0;
  z-index: 100;
  margin-top: 4px;
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-lg);
  overflow: hidden;
  opacity: 0;
  visibility: hidden;
  transform: translateY(-4px);
  transition: all 0.15s ease;
}

.sug-box.show { opacity: 1; visibility: visible; transform: translateY(0); }

.sug-item {
  padding: 9px 14px;
  cursor: pointer;
  font-size: 14px;
  color: var(--text-primary);
  transition: background var(--transition-fast);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.sug-item:hover { background: var(--bg-hover); }

/* v6.0新增：搜索历史+热门搜索下拉 */
.search-dropdown {
  position: absolute;
  top: 100%;
  left: 0;
  right: 0;
  z-index: 99;
  margin-top: 4px;
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-lg);
  overflow: hidden;
  max-height: 380px;
  overflow-y: auto;
}

.search-dropdown-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 10px 14px 6px;
}

.dropdown-title {
  font-size: 12px;
  font-weight: 600;
  color: var(--text-secondary);
  display: flex;
  align-items: center;
  gap: 6px;
}

.dropdown-title i { font-size: 12px; color: var(--primary-orange); }

.clear-history-btn {
  font-size: 11px;
  color: var(--text-muted);
  padding: 2px 8px;
  border-radius: var(--radius-sm);
  transition: all var(--transition-fast);
}

.clear-history-btn:hover { color: var(--primary-red); background: rgba(239, 68, 68, 0.08); }

.search-history-list { padding: 4px 14px 10px; }

.search-empty-history {
  text-align: center;
  padding: 16px 0;
  font-size: 13px;
  color: var(--text-muted);
}

.history-item {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 6px 10px;
  border-radius: var(--radius-sm);
  font-size: 13px;
  color: var(--text-secondary);
  cursor: pointer;
  transition: all var(--transition-fast);
}

.history-item:hover { background: var(--bg-hover); color: var(--text-primary); }

.history-item i { font-size: 11px; color: var(--text-muted); }

.search-dropdown-divider { height: 1px; background: var(--border-color); margin: 4px 14px; }

.hot-search-list {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  padding: 4px 14px 14px;
}

.hot-search-item {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 5px 10px;
  font-size: 12px;
  color: var(--text-secondary);
  background: var(--bg-input);
  border-radius: var(--radius-full);
  transition: all var(--transition-fast);
  text-decoration: none;
}

.hot-search-item:hover { 
  background: rgba(59, 130, 246, 0.08); 
  color: var(--primary-blue); 
}

.hot-rank {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 16px;
  height: 16px;
  font-size: 10px;
  font-weight: 700;
  border-radius: 4px;
  color: #fff;
  background: var(--text-muted);
}

.hot-search-item:nth-child(1) .hot-rank { background: #EF4444; }
.hot-search-item:nth-child(2) .hot-rank { background: #F97316; }
.hot-search-item:nth-child(3) .hot-rank { background: #EAB308; }

/* 一言（v6.0增强） */
.yan-quote {
  margin-bottom: 20px;
  padding: 12px 18px;
  font-size: 13px;
  color: var(--text-muted);
  text-align: center;
  border-left: 3px solid var(--primary-purple);
  background: rgba(139, 92, 246, 0.04);
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  transition: all var(--transition-normal);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
}

.yan-quote:hover { background: rgba(139, 92, 246, 0.07); }

.yan-icon { font-size: 11px; opacity: 0.5; }
#yanText { flex: 1; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }

/* ================================================================
   7. v6.0新增：数据统计面板
   ================================================================ */
.stats-panel {
  margin-bottom: 18px;
  background: var(--bg-card);
  border-radius: var(--radius-lg);
  box-shadow: var(--card-shadow);
  border: 1px solid var(--border-color);
  padding: 16px 20px;
  transition: all var(--transition-normal);
}

.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 12px;
}

.stat-card {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 12px 14px;
  background: var(--bg-input);
  border-radius: var(--radius-md);
  transition: all var(--transition-fast);
}

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

.stat-icon {
  width: 42px;
  height: 42px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-md);
  color: #fff;
  font-size: 17px;
  flex-shrink: 0;
}

.stat-info { display: flex; flex-direction: column; gap: 2px; }

.stat-number {
  font-size: 22px;
  font-weight: 700;
  color: var(--text-primary);
  line-height: 1.1;
  font-variant-numeric: tabular-nums;
}

.stat-label { font-size: 12px; color: var(--text-muted); }

/* ================================================================
   8. v6.0新增：收藏夹区域
   ================================================================ */
.favorites-section {
  margin-bottom: 20px;
  background: var(--bg-card);
  border-radius: var(--radius-lg);
  box-shadow: var(--card-shadow);
  border: 1px solid var(--border-color);
  overflow: hidden;
  transition: all var(--transition-normal);
}

.favorites-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 14px 18px;
  border-bottom: 1px solid var(--border-light);
}

.favorites-title {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 14px;
  font-weight: 600;
  color: var(--text-primary);
}

.favorites-title i { color: #FBBF24; }

.favorites-count {
  font-size: 11px;
  font-weight: 400;
  color: var(--text-muted);
  background: var(--bg-input);
  padding: 2px 8px;
  border-radius: var(--radius-full);
}

.favorites-actions { display: flex; gap: 4px; }

.favorites-action-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 28px;
  height: 28px;
  border-radius: var(--radius-sm);
  color: var(--text-muted);
  font-size: 12px;
  transition: all var(--transition-fast);
}

.favorites-action-btn:hover { background: var(--border-color); color: var(--text-secondary); }

.favorites-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(140px, 1fr));
  gap: 10px;
  padding: 14px 18px;
}

.favorite-item {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 8px 12px;
  background: var(--bg-input);
  border-radius: var(--radius-md);
  font-size: 12.5px;
  color: var(--text-secondary);
  text-decoration: none;
  transition: all var(--transition-fast);
  position: relative;
}

.favorite-item:hover { background: var(--bg-hover); color: var(--primary-blue); transform: translateY(-1px); }

/* [v7.2.6] 收藏项删除按钮 */
.fav-delete-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 20px;
  height: 20px;
  border-radius: var(--radius-sm);
  color: var(--text-muted);
  font-size: 10px;
  margin-left: auto;
  opacity: 0;
  transition: all var(--transition-fast);
  cursor: pointer;
}

.favorite-item:hover .fav-delete-btn { opacity: 1; }
.fav-delete-btn:hover { background: rgba(239, 68, 68, 0.1); color: #EF4444; }

.favorite-item img, .favorite-item .brand-logo, .favorite-item .brand-logo-emoji,
.favorite-item .brand-logo-letter {
  width: 24px;
  height: 24px;
  border-radius: 6px;
}

.fav-icon { display: flex; align-items: center; justify-content: center; width: 24px; height: 24px; }
.fav-name { flex: 1; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }

.favorites-empty {
  text-align: center;
  padding: 24px;
  color: var(--text-muted);
  font-size: 13px;
}

/* ================================================================
   9. 精选推荐区（v6.0增强）
   ================================================================ */
.featured-section {
  margin-bottom: 20px;
  background: var(--bg-card);
  border-radius: var(--radius-lg);
  box-shadow: var(--card-shadow);
  padding: 14px 18px;
  border: 1px solid var(--border-color);
  transition: all var(--transition-normal);
  position: relative;
  overflow: hidden;
}

.featured-section::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: var(--gradient-warm);
  opacity: 0.6;
}

.featured-header {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 12px;
  font-size: 14px;
  font-weight: 600;
  color: var(--text-primary);
}

.featured-header i { color: var(--primary-orange); }

.featured-count { font-size: 12px; font-weight: 400; color: var(--text-muted); margin-left: 4px; }

.featured-nav { margin-left: auto; display: flex; gap: 4px; }

.featured-arrow {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 26px;
  height: 26px;
  border-radius: var(--radius-sm);
  color: var(--text-muted);
  font-size: 11px;
  border: 1px solid var(--border-color);
  transition: all var(--transition-fast);
}

.featured-arrow:hover { background: var(--border-color); color: var(--text-primary); }

.featured-scroll {
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  scrollbar-width: none;
}

.featured-scroll::-webkit-scrollbar { display: none; }

.featured-track { display: flex; gap: 10px; padding: 2px 0; }

.featured-item {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-shrink: 0;
  padding: 9px 16px;
  background: var(--bg-input);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  text-decoration: none;
  color: var(--text-primary);
  font-size: 12.5px;
  font-weight: 500;
  transition: all var(--transition-spring);
  white-space: nowrap;
  position: relative;
}

.featured-item:hover {
  background: rgba(59, 130, 246, 0.08);
  border-color: var(--primary-blue);
  transform: translateY(-3px);
  box-shadow: var(--shadow-md);
}

.featured-item-icon {
  width: 26px;
  height: 26px;
  flex-shrink: 0;
  border-radius: 6px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 14px;
}

.featured-rank {
  font-size: 10px;
  font-weight: 700;
  color: var(--text-muted);
  min-width: 16px;
  text-align: center;
}

/* ================================================================
   10. 工具卡片网格（v6.0全面增强）
   ================================================================ */
.category-header {
  display: flex;
  align-items: center;
  gap: 8px;
  margin: 26px 0 14px;
  font-size: 15px;
  font-weight: 600;
  color: var(--text-primary);
}

.category-header:first-child { margin-top: 0; }

.category-header i { font-size: 16px; }

.category-header .icon-blue { color: var(--primary-blue); }
.category-header .icon-orange { color: var(--primary-orange); }
.category-header .icon-purple { color: var(--primary-purple); }
.category-header .icon-green { color: var(--primary-green); }
.category-header .icon-pink { color: var(--primary-pink); }
.category-header .icon-red { color: var(--primary-red); }

.section-count { font-size: 12px; font-weight: 400; color: var(--text-muted); margin-left: 4px; }

.category-matched { margin-left: auto; font-size: 13px; color: var(--primary-blue); }

.category-actions { display: flex; align-items: center; gap: 6px; margin-left: 8px; }

.category-fav {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 24px;
  height: 24px;
  border-radius: var(--radius-sm);
  color: var(--text-muted);
  font-size: 12px;
  cursor: pointer;
  transition: all var(--transition-fast);
}

.category-fav:hover { color: #FBBF24; background: rgba(251, 191, 36, 0.1); }
.category-fav.active { color: #FBBF24; }

/* 视图切换 */
.view-toggle {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 26px;
  height: 26px;
  border-radius: var(--radius-sm);
  color: var(--text-muted);
  font-size: 12px;
  cursor: pointer;
  transition: all var(--transition-fast);
  flex-shrink: 0;
}

.view-toggle:hover { background: var(--border-color); color: var(--primary-blue); }

/* Bento Grid - 视图密度支持 */
.tools-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(160px, 1fr));
  gap: 12px;
  margin-bottom: 8px;
}

/* [v7.3.0] 大屏适配：1920px+ 显示更多列 */
@media (min-width: 1440px) {
  .tools-grid {
    grid-template-columns: repeat(auto-fill, minmax(150px, 1fr));
  }
}

@media (min-width: 1920px) {
  .tools-grid {
    grid-template-columns: repeat(auto-fill, minmax(140px, 1fr));
    gap: 14px;
  }
}

/* 紧凑模式 */
.tools-grid[data-density="compact"] {
  grid-template-columns: repeat(auto-fill, minmax(130px, 1fr));
  gap: 8px;
}

@media (min-width: 1440px) {
  .tools-grid[data-density="compact"] {
    grid-template-columns: repeat(auto-fill, minmax(120px, 1fr));
  }
}

/* 宽松模式 */
.tools-grid[data-density="loose"] {
  grid-template-columns: repeat(auto-fill, minmax(190px, 1fr));
  gap: 16px;
}

@media (min-width: 1440px) {
  .tools-grid[data-density="loose"] {
    grid-template-columns: repeat(auto-fill, minmax(180px, 1fr));
  }
}

/* 工具卡片（v6.0重新设计） */
.tool-card {
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: 18px 12px 14px;
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  text-align: center;
  text-decoration: none;
  color: var(--text-primary);
  cursor: pointer;
  position: relative;
  overflow: hidden;
  opacity: 1;
  transform: none;
  transition:
    box-shadow var(--transition-fast),
    border-color var(--transition-fast),
    background var(--transition-fast);
  /* [v7.2.6] 固定卡片高度，确保同行对齐 */
  height: 140px;
  min-height: 140px;
  max-height: 140px;
  justify-content: flex-start;
}

.tool-card.hidden { display: none !important; }

.tool-card:hover {
  transform: translateY(-5px);
  box-shadow: var(--card-shadow-hover);
  border-color: var(--primary-blue);
  background: var(--bg-card);
}

.tool-card.revealed { opacity: 1; transform: translateY(0); }
.tool-card.revealed:hover { transform: translateY(-5px); }
.tool-card:active { transform: scale(0.97); }

/* v6.0新增：卡片标签徽章组 */
.card-badges {
  position: absolute;
  top: 8px;
  right: 8px;
  display: flex;
  flex-direction: row;
  flex-wrap: wrap;
  gap: 4px;
  z-index: 3;
  pointer-events: none;
  max-width: calc(100% - 16px);
  justify-content: flex-end;
}

.badge {
  display: inline-flex;
  align-items: center;
  gap: 2px;
  padding: 3px 8px;
  font-size: 11px;
  font-weight: 700;
  color: #fff;
  border-radius: var(--radius-full);
  line-height: 1.3;
  white-space: nowrap;
  animation: badge-bounce 2s ease-in-out infinite;
  text-shadow: 0 1px 2px rgba(0,0,0,0.2);
}

@keyframes badge-bounce {
  0%, 100% { transform: scale(1); }
  50% { transform: scale(1.06); }
}

.badge-hot { background: var(--badge-hot-bg); box-shadow: 0 2px 6px rgba(239, 68, 68, 0.35); }
.badge-new { background: var(--badge-new-bg); animation-delay: 0.3s; }
.badge-free { background: var(--badge-free-bg); animation: none; font-size: 9px; }
.badge-official { background: var(--badge-official-bg); animation: none; font-size: 9px; }

/* 工具图标区 */
.tool-icon {
  width: 44px;
  height: 44px;
  margin-bottom: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-md);
  flex-shrink: 0;
  position: relative;
  z-index: 1;
  transition: transform var(--transition-spring);
}

.tool-card:hover .tool-icon { transform: scale(1.08); }

/* 工具信息区（v6.0重构） */
.tool-info {
  width: 100%;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 4px;
  position: relative;
  z-index: 1;
}

.tool-name {
  font-size: 13px;
  font-weight: 500;
  line-height: 1.3;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  max-width: 100%;
}

.tool-desc {
  font-size: 11.5px;
  color: var(--text-muted);
  line-height: 1.4;
  margin-top: 2px;
  overflow: hidden;
  text-overflow: ellipsis;
  /* [v7.2.6] 多行省略，固定2行高度 */
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  white-space: normal;
  max-width: 100%;
  min-height: 32px;
  max-height: 32px;
}

/* v6.0新增：操作按钮组 */
.tool-actions {
  position: absolute;
  bottom: 6px;
  right: 6px;
  display: flex;
  gap: 4px;
  opacity: 0;
  transform: translateY(4px);
  transition: all var(--transition-fast);
  z-index: 4;
}

.tool-card:hover .tool-actions {
  opacity: 1;
  transform: translateY(0);
}

.tool-copy-btn, .tool-fav-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 24px;
  height: 24px;
  border-radius: var(--radius-sm);
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  color: var(--text-muted);
  font-size: 10px;
  transition: all var(--transition-fast);
  cursor: pointer;
}

.tool-copy-btn:hover, .tool-fav-btn:hover {
  background: var(--primary-blue);
  color: #fff;
  border-color: var(--primary-blue);
}

.tool-fav-btn.active { color: #FBBF24; border-color: #FBBF24; }

/* Bento span-2 大卡片 */
.tool-card.span-2 {
  grid-column: span 2;
  flex-direction: row;
  text-align: left;
  gap: 14px;
  padding: 18px 20px;
}

.tool-card.span-2 .tool-icon { margin-bottom: 0; }
.tool-card.span-2 .tool-info { align-items: flex-start; }

/* 列表视图（v6.0增强） */
.tools-grid.list-view {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.tools-grid.list-view .tool-card {
  flex-direction: row;
  align-items: center;
  gap: 12px;
  padding: 10px 16px;
  opacity: 1;
  transform: none;
  border-radius: var(--radius-sm);
}

.tools-grid.list-view .tool-card.revealed { opacity: 1; transform: none; }
.tools-grid.list-view .tool-card:hover { transform: translateX(4px); }
.tools-grid.list-view .tool-card:active { transform: scale(0.99); }

.tools-grid.list-view .tool-icon {
  margin-bottom: 0;
  width: 32px;
  height: 32px;
}

.tools-grid.list-view .tool-name {
  font-size: 13px;
  flex: 1;
  text-align: left;
}

.tools-grid.list-view .tool-desc {
  display: block;
  font-size: 12px;
  margin-top: 0;
  flex: 2;
  -webkit-line-clamp: 1;
  line-clamp: 1;
  text-align: left;
}

.tools-grid.list-view .hot-badge {
  position: static;
  font-size: 10px;
  padding: 1px 6px;
  animation: none;
  flex-shrink: 0;
}

.tools-grid.list-view .tool-actions {
  position: static;
  opacity: 1;
  transform: none;
}

/* ================================================================
   11. 右侧栏 - 详情样式（v6.0增强）
   ================================================================ */

.news-section {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  box-shadow: var(--card-shadow);
  overflow: hidden;
  display: flex;
  flex-direction: column;
  transition: all var(--transition-normal);
  margin-bottom: 16px;
  margin-right: 0;
}

.news-section:last-child { margin-bottom: 0; }

.news-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 14px 16px;
  border-bottom: 1px solid var(--border-light);
}

.news-title {
  font-size: 14px;
  font-weight: 600;
  color: var(--text-primary);
  display: flex;
  align-items: center;
  gap: 6px;
}

.news-title i { color: var(--primary-orange); }

.news-more { font-size: 12px; color: var(--text-muted); transition: color var(--transition-fast); }
.news-more:hover { color: var(--primary-blue); }

/* [v8.2.3] 右侧栏模块展开/折叠按钮 */
.news-expand-btn {
  background: none;
  border: none;
  cursor: pointer;
  color: var(--text-muted);
  width: 24px;
  height: 24px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 6px;
  transition: all 0.25s ease;
  font-size: 12px;
  flex-shrink: 0;
  margin-left: auto;
}
.news-expand-btn:hover {
  background: var(--bg-hover);
  color: var(--primary-blue);
}
.news-expand-btn i {
  transition: transform 0.3s cubic-bezier(0.34, 1.56, 0.64, 1);
}
.news-expand-btn.expanded i {
  transform: rotate(180deg);
}


.news-content { padding: 12px 16px; font-size: 13px; line-height: 1.7; color: var(--text-secondary); }
.news-content img { max-width: 100%; border-radius: var(--radius-sm); }
.news-content a { color: var(--primary-blue); }

.news-empty {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 32px 16px;
  text-align: center;
  color: var(--text-muted);
  font-size: 13px;
}

.news-empty-icon { font-size: 36px; margin-bottom: 10px; opacity: 0.5; }
.news-empty-hint { font-size: 12px; color: var(--text-muted); margin-top: 4px; }

.news-empty-action {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  margin-top: 12px;
  padding: 7px 16px;
  font-size: 12px;
  color: var(--primary-blue);
  background: rgba(59, 130, 246, 0.08);
  border-radius: var(--radius-full);
  transition: background var(--transition-fast);
}

.news-empty-action:hover { background: rgba(59, 130, 246, 0.14); }

/* ---- 热榜聚合（v6.0增强） ---- */
.hotlist-section .news-header { border-bottom: none; padding-bottom: 8px; }

.hotlist-tabs {
  display: flex;
  gap: 4px;
  padding: 0 16px 8px;
  border-bottom: 1px solid var(--border-light);
  flex-wrap: wrap;
}

.hotlist-tab {
  padding: 5px 14px;
  font-size: 12px;
  font-weight: 500;
  color: var(--text-muted);
  cursor: pointer;
  border-radius: var(--radius-full);
  transition: all var(--transition-fast);
  user-select: none;
}

.hotlist-tab:hover { background: var(--border-color); color: var(--text-primary); }

.hotlist-tab.active {
  background: rgba(59, 130, 246, 0.10);
  color: var(--primary-blue);
  font-weight: 600;
}

/* [v8.2.2] 增大热榜区域高度，支持更多条目+滚动 */
.hotlist-content { padding: 6px 0; min-height: 200px; overflow-y: auto; }

.hotlist-loading {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  padding: 20px 16px;
  font-size: 13px;
  color: var(--text-muted);
}

.hotlist-item-link {
  display: flex;
  align-items: flex-start;
  gap: 8px;
  padding: 7px 16px;
  cursor: pointer;
  transition: background var(--transition-fast);
  text-decoration: none;
  color: var(--text-primary);
}

.hotlist-item-link:hover { background: var(--bg-hover); }

.hotlist-rank {
  flex-shrink: 0;
  width: 20px;
  text-align: center;
  font-size: 12px;
  font-weight: 700;
  color: var(--text-muted);
  padding-top: 1px;
}

.hotlist-rank.top-1 { color: #EF4444; }
.hotlist-rank.top-2 { color: #F97316; }
.hotlist-rank.top-3 { color: #EAB308; }

.hotlist-text {
  flex: 1;
  font-size: 12.5px;
  line-height: 1.45;
  overflow: hidden;
  text-overflow: ellipsis;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
}

.hotlist-heat { font-size: 11px; color: var(--text-muted); flex-shrink: 0; padding-top: 1px; }
.hotlist-error { padding: 20px 16px; text-align: center; color: var(--text-muted); font-size: 13px; }

/* ---- 今日推荐（v6.0新增） ---- */
.today-rec-section .news-header { padding-bottom: 8px; }

.rec-refresh-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 26px;
  height: 26px;
  border-radius: var(--radius-sm);
  color: var(--text-muted);
  font-size: 12px;
  transition: all var(--transition-fast);
}

.rec-refresh-btn:hover { background: var(--border-color); color: var(--primary-blue); transform: rotate(180deg); }

.rec-loading, .today-rec-empty {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  padding: 20px 16px;
  font-size: 13px;
  color: var(--text-muted);
}

/* [v8.2.5] 今日推荐：由max-height控制折叠/展开 */
.today-rec-content { padding: 4px 0; min-height: 150px; overflow-y: auto; }

/* [v8.2.5] 资讯动态 + 全球热点：由nth-child控制折叠/展开，移除旧max-height */
.news-dynamic-content,
.global-news-content {
  padding: 6px 0;
  min-height: 120px;
  overflow-y: auto;
}
.news-dynamic-item-link {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 5px 10px;
  text-decoration: none;
  color: var(--text-secondary);
  font-size: 12px;
  transition: background var(--transition-fast);
  border-radius: var(--radius-sm);
}
.news-dynamic-item-link:hover { background: var(--bg-hover); color: var(--primary-blue); }
.news-dynamic-dot {
  flex-shrink: 0;
  width: 4px;
  height: 4px;
  border-radius: 50%;
  background: var(--primary-blue);
}

.today-rec-item {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 8px 16px;
  transition: background var(--transition-fast);
  text-decoration: none;
  color: var(--text-primary);
}

.today-rec-item:hover { background: var(--bg-hover); }

.today-rec-item-icon {
  width: 32px;
  height: 32px;
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  font-size: 14px;
}

.today-rec-item-info { flex: 1; min-width: 0; }
.today-rec-item-name { font-size: 13px; font-weight: 500; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.today-rec-item-desc { font-size: 11.5px; color: var(--text-muted); margin-top: 2px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }


  background: var(--border-color);
}

/* ---- 快捷工具（v6.0增强） ---- */
.quick-tools-section .news-header { border-bottom: none; padding-bottom: 6px; }

.quick-tools-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 8px;
  padding: 8px 10px 12px;
}

.quick-tool-btn {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 8px 8px;
  border-radius: var(--radius-sm);
  background: var(--bg-input);
  border: 1px solid var(--border-color);
  color: var(--text-secondary);
  font-size: 12px;
  cursor: pointer;
  transition: all var(--transition-fast);
  text-align: left;
  white-space: nowrap;
  overflow: hidden;
}

.quick-tool-btn:hover {
  background: rgba(59, 130, 246, 0.08);
  color: var(--primary-blue);
  border-color: var(--primary-blue);
}

.quick-tool-btn i { font-size: 14px; width: 18px; text-align: center; flex-shrink: 0; }
.quick-tool-btn span { overflow: hidden; text-overflow: ellipsis; }

/* [v7.9.0] 历史上的今天（右侧栏） */
/* [v8.2.5] 历史上的今天：由nth-child控制折叠/展开，移除旧max-height */
.today-history-content {
  padding: 8px 10px;
  min-height: 300px;
  overflow-y: auto;
}
.today-history-content .history-item {
  display: flex;
  align-items: flex-start;
  gap: 8px;
  padding: 6px 6px;
  border-radius: var(--radius-sm);
  font-size: 12px;
  color: var(--text-secondary);
  line-height: 1.5;
  border-bottom: 1px solid var(--border-light);
}
.today-history-content .history-item:last-child { border-bottom: none; }
.history-year {
  flex-shrink: 0;
  font-size: 11px;
  color: var(--primary-blue);
  font-weight: 600;
  min-width: 40px;
}
.history-title {
  color: var(--text-secondary);
  text-decoration: none;
  font-size: 12px;
}
.history-title:hover { color: var(--primary-blue); }

/* [v7.9.0] 今日信息（右侧栏） */
.festival-content { padding: 10px 12px; }
.festival-item {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 5px 0;
  font-size: 13px;
  border-bottom: 1px solid var(--border-light);
}
.festival-item:last-child { border-bottom: none; }
.festival-label { color: var(--text-muted); font-size: 12px; }
.festival-value { color: var(--text-primary); font-weight: 500; font-size: 13px; }

/* ---- 二维码区域（v6.0新增） ---- */
.qrcode-section { padding: 0 !important; overflow: hidden; }

.qrcode-content {
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: 18px 16px;
  gap: 10px;
  text-align: center;
}

.qrcode-text {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 12px;
  color: var(--text-muted);
}

.qrcode-img {
  width: 120px;
  height: 120px;
  background: var(--bg-input);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 40px;
  color: var(--text-muted);
  cursor: pointer;
  transition: all var(--transition-fast);
}

.qrcode-img:hover { background: var(--border-color); color: var(--primary-blue); }

/* ================================================================
   12. 最近浏览记录（v6.0新增）
   ================================================================ */
.recent-section {
  margin-bottom: 20px;
  background: var(--bg-card);
  border-radius: var(--radius-lg);
  box-shadow: var(--card-shadow);
  border: 1px solid var(--border-color);
  overflow: hidden;
}

.recent-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 12px 18px;
  border-bottom: 1px solid var(--border-light);
  font-size: 14px;
  font-weight: 600;
  color: var(--text-primary);
}

.recent-header i { color: var(--primary-purple); }

.recent-clear-btn {
  font-size: 11px;
  color: var(--text-muted);
  padding: 4px 10px;
  border-radius: var(--radius-full);
  transition: all var(--transition-fast);
}

.recent-clear-btn:hover { color: var(--primary-red); background: rgba(239, 68, 68, 0.08); }

.recent-list { display: flex; flex-direction: column; padding: 8px; max-height: 200px; overflow-y: auto; }

.recent-item {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 8px 12px;
  border-radius: var(--radius-sm);
  font-size: 13px;
  color: var(--text-secondary);
  text-decoration: none;
  transition: all var(--transition-fast);
}

.recent-item:hover { background: var(--bg-hover); color: var(--text-primary); }

.recent-item-time { font-size: 11px; color: var(--text-muted); margin-left: auto; }

/* ================================================================
   13. 页脚（v6.0增强）
   ================================================================ */
.site-footer {
  margin-top: 36px;
  padding: 24px 0;
  text-align: center;
  font-size: 12px;
  color: var(--text-muted);
  border-top: 1px solid var(--border-light);
}

.footer-stats {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  margin-bottom: 10px;
  flex-wrap: wrap;
}

.footer-stats span { display: flex; align-items: center; gap: 4px; }
.footer-stats strong { color: var(--primary-blue); }

.footer-links { margin-bottom: 8px; }
.footer-links a { color: var(--text-muted); }
.footer-links a:hover { color: var(--primary-blue); }

.footer-bottom {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  flex-wrap: wrap;
}

.footer-submit-link {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  color: var(--primary-blue);
  font-weight: 500;
}

.footer-submit-link:hover { color: var(--primary-purple); }

/* ================================================================
   14. 返回顶部（v6.0增强：带阅读进度）
   ================================================================ */
.back-to-top {
  position: fixed;
  bottom: 32px;
  right: 32px;
  width: 44px;
  height: 44px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  color: var(--text-secondary);
  font-size: 16px;
  box-shadow: var(--shadow-lg);
  opacity: 0;
  visibility: hidden;
  transform: translateY(10px);
  transition: all var(--transition-normal);
  z-index: 80;
  overflow: hidden;
}

.back-to-top::before {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  height: 3px;
  background: var(--gradient-main);
  width: var(--scroll-percent, 0%);
  transition: width 0.1s linear;
}

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

.back-to-top:hover {
  background: var(--primary-blue);
  color: #fff;
  border-color: var(--primary-blue);
}

.back-to-top:active { transform: scale(0.92); }

/* ================================================================
   15. 卡片光晕效果 + Tooltip（v6.0增强）
   ================================================================ */
.tool-card::before {
  content: '';
  position: absolute;
  inset: 0;
  border-radius: var(--radius-lg);
  opacity: 0;
  background: radial-gradient(
    320px circle at var(--mouse-x, 50%) var(--mouse-y, 50%),
    rgba(59, 130, 246, 0.10),
    transparent 60%
  );
  transition: opacity 0.4s ease;
  pointer-events: none;
  z-index: 0;
}

.tool-card:hover::before { opacity: 1; }

#cardTooltip {
  position: fixed;
  z-index: 9999;
  max-width: 300px;
  padding: 12px 16px;
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-xl);
  opacity: 0;
  visibility: hidden;
  transition: all 0.15s ease;
  pointer-events: none;
  font-size: 13px;
  line-height: 1.5;
}

#cardTooltip.show { opacity: 1; visibility: visible; }

.tt-name { font-weight: 600; color: var(--text-primary); margin-bottom: 4px; }
.tt-desc { color: var(--text-secondary); font-size: 12px; }
.tt-tags { margin-top: 6px; display: flex; flex-wrap: wrap; gap: 4px; }
.tt-tags span {
  padding: 2px 7px;
  font-size: 10px;
  background: var(--bg-input);
  border-radius: var(--radius-full);
  color: var(--text-muted);
}
.tt-domain { margin-top: 6px; font-size: 11px; color: var(--text-muted); display: flex; align-items: center; gap: 4px; }

/* ================================================================
   16. Ctrl+K 搜索弹窗（v6.0增强）
   ================================================================ */
.search-modal-overlay {
  position: fixed;
  inset: 0;
  z-index: 2000;
  background: rgba(15, 23, 42, 0.55);
  backdrop-filter: blur(6px);
  display: flex;
  align-items: start;
  justify-content: center;
  padding-top: 14vh;
  opacity: 0;
  visibility: hidden;
  transition: all var(--transition-fast);
}

.search-modal-overlay.show { opacity: 1; visibility: visible; }

.search-modal {
  width: 580px;
  max-width: 90vw;
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-xl);
  overflow: hidden;
  transform: scale(0.96) translateY(-10px);
  transition: transform var(--transition-fast);
}

.search-modal-overlay.show .search-modal { transform: scale(1) translateY(0); }

.search-modal-header {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 16px 18px;
  border-bottom: 1px solid var(--border-light);
}

.search-modal-header i { color: var(--text-muted); font-size: 16px; }

.search-modal-input {
  flex: 1;
  border: none;
  outline: none;
  background: transparent;
  color: var(--text-primary);
  font-size: 16px;
}

.search-modal-input::placeholder { color: var(--text-muted); }

.search-modal-kbd {
  display: inline-flex;
  align-items: center;
  padding: 3px 8px;
  font-size: 11px;
  font-family: var(--font-mono);
  background: var(--border-color);
  border-radius: 4px;
  color: var(--text-muted);
}

.search-modal-body { max-height: 380px; overflow-y: auto; padding: 8px; }

.modal-result-item {
  display: flex;
  flex-direction: column;
  gap: 3px;
  padding: 11px 14px;
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: background var(--transition-fast);
  text-decoration: none;
  color: var(--text-primary);
}

.modal-result-item:hover,
.modal-result-item.active { background: var(--bg-hover); }

.modal-result-name { font-size: 14px; font-weight: 500; }
.modal-result-name mark { background: rgba(249, 115, 22, 0.2); color: var(--primary-orange); padding: 0 2px; border-radius: 2px; }
.modal-result-desc { font-size: 12px; color: var(--text-muted); overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.modal-result-domain { font-size: 11px; color: var(--text-muted); }

.modal-no-result { padding: 28px; text-align: center; color: var(--text-muted); font-size: 14px; }

.search-modal-footer {
  display: flex;
  align-items: center;
  gap: 18px;
  padding: 10px 18px;
  border-top: 1px solid var(--border-light);
  font-size: 12px;
  color: var(--text-muted);
}

.search-modal-footer kbd {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 18px;
  height: 18px;
  padding: 0 4px;
  font-size: 10px;
  font-family: var(--font-mono);
  background: var(--border-color);
  border-radius: 3px;
}

/* ================================================================
   17. 网站提交弹窗（v6.0新增）
   ================================================================ */
.submit-modal-overlay {
  position: fixed;
  inset: 0;
  z-index: 2000;
  background: rgba(15, 23, 42, 0.55);
  backdrop-filter: blur(6px);
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  visibility: hidden;
  transition: all var(--transition-fast);
}

.submit-modal-overlay.show { opacity: 1; visibility: visible; }

.submit-modal {
  width: 500px;
  max-width: 90vw;
  max-height: 85vh;
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-xl);
  overflow: hidden;
  transform: scale(0.95) translateY(10px);
  transition: transform var(--transition-fast);
}

.submit-modal-overlay.show .submit-modal { transform: scale(1) translateY(0); }

.submit-modal-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 16px 20px;
  border-bottom: 1px solid var(--border-light);
  font-size: 15px;
  font-weight: 600;
}

.submit-close {
  width: 30px;
  height: 30px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-sm);
  color: var(--text-muted);
  font-size: 18px;
  transition: all var(--transition-fast);
}

.submit-close:hover { background: var(--border-color); color: var(--text-primary); }

.submit-modal-body { padding: 20px; overflow-y: auto; max-height: calc(85vh - 60px); }

.form-group { margin-bottom: 16px; }

.form-group label {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 13px;
  font-weight: 500;
  color: var(--text-primary);
  margin-bottom: 6px;
}

.form-group label i { font-size: 13px; color: var(--primary-blue); width: 16px; text-align: center; }

.form-group input,
.form-group textarea,
.form-group select {
  width: 100%;
  padding: 10px 14px;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  background: var(--bg-input);
  color: var(--text-primary);
  font-size: 14px;
  outline: none;
  transition: border-color var(--transition-fast);
}

.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus { border-color: var(--primary-blue); }

.form-group textarea { resize: vertical; min-height: 70px; }

.form-actions {
  display: flex;
  gap: 10px;
  justify-content: flex-end;
  margin-top: 20px;
}

/* [v7.2.6] 提交表单免责声明 */
.submit-disclaimer {
  display: flex;
  align-items: flex-start;
  gap: 8px;
  padding: 12px 14px;
  background: rgba(245, 158, 11, 0.06);
  border: 1px solid rgba(245, 158, 11, 0.15);
  border-radius: var(--radius-md);
  font-size: 12px;
  color: var(--text-secondary);
  line-height: 1.5;
  margin-bottom: 16px;
}
.submit-disclaimer i {
  color: var(--primary-orange);
  font-size: 13px;
  margin-top: 1px;
  flex-shrink: 0;
}
.submit-disclaimer a {
  color: var(--primary-blue);
  text-decoration: none;
}
.submit-disclaimer a:hover {
  text-decoration: underline;
}

.btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 9px 20px;
  border-radius: var(--radius-md);
  font-size: 13.5px;
  font-weight: 500;
  cursor: pointer;
  transition: all var(--transition-fast);
  border: none;
}

.btn-primary {
  background: var(--gradient-main);
  color: #fff;
}

.btn-primary:hover { opacity: 0.9; transform: translateY(-1px); box-shadow: 0 4px 12px rgba(59, 130, 246, 0.3); }

.btn-secondary {
  background: var(--bg-input);
  color: var(--text-secondary);
  border: 1px solid var(--border-color);
}

.btn-secondary:hover { background: var(--border-color); color: var(--text-primary); }

/* ================================================================
   18. Toast通知容器（v6.0新增）
   ================================================================ */
.toast-container {
  position: fixed;
  bottom: 80px;
  left: 50%;
  transform: translateX(-50%);
  z-index: 10000;
  display: flex;
  flex-direction: column;
  gap: 8px;
  align-items: center;
  pointer-events: none;
}

.toast-notification {
  padding: 10px 22px;
  background: var(--text-primary);
  color: var(--bg-main);
  border-radius: var(--radius-full);
  font-size: 13px;
  font-weight: 500;
  box-shadow: var(--shadow-xl);
  pointer-events: auto;
  white-space: nowrap;
  animation: toast-in 0.3s ease forwards;
}

.toast-notification.toast-exit { animation: toast-out 0.25s ease forwards; }

@keyframes toast-in {
  from { opacity: 0; transform: translateY(12px) scale(0.95); }
  to { opacity: 1; transform: translateY(0) scale(1); }
}

@keyframes toast-out {
  from { opacity: 1; transform: translateY(0) scale(1); }
  to { opacity: 0; transform: translateY(-8px) scale(0.95); }
}

/* ================================================================
   19. 空状态增强（v6.0新增）
   ================================================================ */
.empty-tip {
  text-align: center;
  padding: 52px 20px;
  color: var(--text-muted);
}

.empty-illustration {
  margin-bottom: 16px;
  opacity: 0.5;
}

.empty-title {
  font-size: 16px;
  font-weight: 600;
  color: var(--text-secondary);
  margin-bottom: 6px;
}

.empty-subtitle {
  font-size: 13px;
  color: var(--text-muted);
  margin-bottom: 18px;
}

.empty-reset-btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 8px 20px;
  background: var(--bg-input);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-full);
  color: var(--text-secondary);
  font-size: 13px;
  cursor: pointer;
  transition: all var(--transition-fast);
}

.empty-reset-btn:hover {
  background: var(--primary-blue);
  color: #fff;
  border-color: var(--primary-blue);
}

/* ================================================================
   20. 移动端按钮 + 遮罩
   ================================================================ */
.mobile-menu-btn {
  display: none;
  position: fixed;
  top: 10px;
  left: 10px;
  z-index: 2001;
  width: 40px;
  height: 40px;
  border-radius: var(--radius-md);
  border: 1px solid var(--border-color);
  background: var(--bg-card);
  color: var(--text-primary);
  align-items: center;
  justify-content: center;
  font-size: 18px;
  box-shadow: var(--card-shadow);
  cursor: pointer;
}

.mobile-overlay {
  position: fixed;
  inset: 0;
  z-index: 99;
  background: rgba(15, 23, 42, 0.45);
  opacity: 0;
  visibility: hidden;
  transition: all var(--transition-normal);
}

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

/* ================================================================
   21. Logo 样式（v6.0优化）
   ================================================================ */
.brand-logo-container {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  flex-shrink: 0;
  border-radius: 10px;
  overflow: hidden;
  background: var(--bg-input);
}

.brand-logo {
  width: 44px;
  height: 44px;
  object-fit: contain;
  border-radius: 8px;
  transition: all var(--transition-normal);
  -webkit-user-drag: none;
}

.brand-logo:hover { transform: scale(1.1); box-shadow: 0 2px 10px rgba(0, 0, 0, 0.12); }
.brand-logo[data-retry-count] { animation: logo-retry-flash 0.3s ease; }

.brand-logo-loading {
  width: 44px;
  height: 44px;
  border-radius: 8px;
  background: linear-gradient(90deg, var(--border-color) 25%, var(--border-light) 50%, var(--border-color) 75%);
  background-size: 200% 100%;
  animation: logo-loading 1.5s ease infinite;
}

.brand-logo-error {
  width: 44px;
  height: 44px;
  border-radius: 8px;
  background: var(--bg-input);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 18px;
  color: var(--text-muted);
}

.brand-logo-emoji {
  font-size: 26px;
  line-height: 44px;
  width: 44px;
  height: 44px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: 8px;
  background: var(--bg-input);
  text-align: center;
  flex-shrink: 0;
}

.brand-logo-letter {
  width: 44px;
  height: 44px;
  border-radius: 8px;
  flex-shrink: 0;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 18px;
  font-weight: 700;
  color: var(--primary-blue);
  background: linear-gradient(135deg, rgba(59,130,246,0.1), rgba(139,92,246,0.1));
}

.tool-card .brand-logo,
.tool-card .brand-logo-emoji,
.tool-card .brand-logo-letter { width: 44px; height: 44px; }

.tool-card.span-2 .brand-logo,
.tool-card.span-2 .brand-logo-emoji,
.tool-card.span-2 .brand-logo-letter { width: 44px; height: 44px; }

[data-theme="dark"] .brand-logo-container,
[data-theme="dark"] .brand-logo-emoji,
[data-theme="dark"] .brand-logo-error { background: #232d3f; }
[data-theme="dark"] .brand-logo { background: #232d3f; }
[data-theme="dark"] .brand-logo-loading { background: linear-gradient(90deg, #232d3f 25%, #2a3444 50%, #232d3f 75%); background-size: 200% 100%; }

/* ================================================================
   22. 动画（v6.0增强）
   ================================================================ */
@keyframes fadeInUp {
  from { opacity: 0; transform: translateY(16px); }
  to { opacity: 1; transform: translateY(0); }
}

@keyframes slideInLeft {
  from { opacity: 0; transform: translateX(-16px); }
  to { opacity: 1; transform: translateX(0); }
}

@keyframes pulse {
  0%, 100% { box-shadow: 0 0 0 0 rgba(59, 130, 246, 0.20); }
  50% { box-shadow: 0 0 0 8px rgba(59, 130, 246, 0); }
}

@keyframes logo-retry-flash { 0% { opacity: 0.4; } 100% { opacity: 1; } }
@keyframes logo-loading { 0% { background-position: 200% 0; } 100% { background-position: -200% 0; } }

/* 入场动画 */
.sidebar-nav .nav-item-wrap { animation: slideInLeft 0.3s ease both; }
.sidebar-nav .nav-item-wrap:nth-child(1) { animation-delay: 0.02s; }
.sidebar-nav .nav-item-wrap:nth-child(2) { animation-delay: 0.04s; }
.sidebar-nav .nav-item-wrap:nth-child(3) { animation-delay: 0.06s; }
.sidebar-nav .nav-item-wrap:nth-child(4) { animation-delay: 0.08s; }
.sidebar-nav .nav-item-wrap:nth-child(5) { animation-delay: 0.10s; }
.sidebar-nav .nav-item-wrap:nth-child(6) { animation-delay: 0.12s; }
.sidebar-nav .nav-item-wrap:nth-child(7) { animation-delay: 0.14s; }
.sidebar-nav .nav-item-wrap:nth-child(8) { animation-delay: 0.16s; }

/* 搜索框呼吸动画 */
.search-glass.idle-pulse { animation: pulse 2.5s ease infinite; }

/* 统计数字动画 */
@keyframes countUp {
  from { opacity: 0; transform: translateY(8px); }
  to { opacity: 1; transform: translateY(0); }
}

.stat-number { animation: countUp 0.5s ease both; }

/* ================================================================
   23. 响应式（v6.0全面增强）
   ================================================================ */

/* [v7.3.0] 新增：1024px断点 - iPad横屏适配 */
@media (max-width: 1024px) {
  .sidebar-right { display: none; }
  .content-wrapper { width: 100%; padding-right: 24px; }

  /* [v7.3.8] 移动端热点/推荐横向滚动卡片 */
  .mobile-hot-section {
    display: block;
    margin-bottom: 16px;
    background: var(--bg-card);
    border-radius: var(--radius-lg);
    border: 1px solid var(--border-color);
    padding: 12px 16px;
    box-shadow: var(--card-shadow);
  }
  .mobile-hot-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 10px;
  }
  .mobile-hot-title {
    display: flex;
    align-items: center;
    gap: 6px;
    font-size: 14px;
    font-weight: 600;
    color: var(--text-primary);
  }
  .mobile-hot-title i { color: var(--primary-red); }
  .mobile-hot-scroll {
    display: flex;
    gap: 10px;
    overflow-x: auto;
    scroll-snap-type: x mandatory;
    -webkit-overflow-scrolling: touch;
    padding-bottom: 6px;
    scrollbar-width: none;
  }
  .mobile-hot-scroll::-webkit-scrollbar { display: none; }
  .mobile-hot-card {
    flex: 0 0 auto;
    scroll-snap-align: start;
    width: 160px;
    background: var(--bg-input);
    border-radius: var(--radius-md);
    padding: 10px 12px;
    text-decoration: none;
    color: var(--text-secondary);
    font-size: 12px;
    transition: all var(--transition-fast);
    border: 1px solid transparent;
  }
  .mobile-hot-card:hover {
    border-color: var(--border-color);
    background: var(--bg-hover);
  }
  .mobile-hot-rank {
    font-size: 11px;
    font-weight: 700;
    margin-bottom: 4px;
  }
  .mobile-hot-rank.top-1 { color: #EF4444; }
  .mobile-hot-rank.top-2 { color: #F97316; }
  .mobile-hot-rank.top-3 { color: #EAB308; }
  .mobile-hot-text {
    overflow: hidden;
    text-overflow: ellipsis;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    line-height: 1.4;
  }
  .mobile-hot-heat {
    font-size: 10px;
    color: var(--text-muted);
    margin-top: 4px;
  }
  .mobile-rec-scroll {
    display: flex;
    gap: 10px;
    overflow-x: auto;
    scroll-snap-type: x mandatory;
    -webkit-overflow-scrolling: touch;
    padding-bottom: 6px;
    scrollbar-width: none;
  }
  .mobile-rec-scroll::-webkit-scrollbar { display: none; }
  .mobile-rec-card {
    flex: 0 0 auto;
    scroll-snap-align: start;
    width: 140px;
    background: var(--bg-input);
    border-radius: var(--radius-md);
    padding: 10px;
    text-decoration: none;
    color: var(--text-secondary);
    font-size: 12px;
    display: flex;
    align-items: center;
    gap: 8px;
    transition: all var(--transition-fast);
  }
  .mobile-rec-card:hover { background: var(--bg-hover); }
  .mobile-rec-icon {
    width: 28px; height: 28px;
    border-radius: 6px;
    display: flex; align-items: center; justify-content: center;
    font-size: 13px; flex-shrink: 0;
  }
  
  .tools-grid {
    grid-template-columns: repeat(auto-fill, minmax(150px, 1fr));
  }
}

/* <= 900px: 调整统计面板 */
@media (max-width: 900px) {
  .stats-grid { grid-template-columns: repeat(2, 1fr); }
  .datetime-bar { flex-direction: column; align-items: flex-start; gap: 12px; }
}

/* <= 768px: 移动端适配 */
@media (max-width: 768px) {
  .sidebar {
    transform: translateX(-100%);
    z-index: 200;
  }

  .sidebar.mobile-open { transform: translateX(0); }
  .sidebar.show, .sidebar.open { transform: translateX(0); }

  .main-content { margin-left: 0; }
  .mobile-menu-btn { display: flex; }

  .content-wrapper {
    padding: 0 12px 16px;
    gap: 16px;
  }

  .top-bar { padding: 0 12px; padding-left: 52px; }
  
  /* 时间天气紧凑 */
  .datetime-bar {
    flex-direction: column;
    align-items: flex-start;
    gap: 12px;
    padding: 16px;
  }

  .time-big { font-size: 30px; }
  .week-badge { padding: 4px 10px; font-size: 12px; }
  .ip-location-bar { font-size: 11px; gap: 10px; flex-wrap: wrap; }

  /* 搜索框紧凑 */
  .search-glass { border-radius: var(--radius-lg); }
  .search-engine-pick { padding: 6px 8px; font-size: 12px; }
  .search-shortcut-hint { display: none; }

  /* 统计面板移动端 */
  .stats-panel { padding: 14px 16px; }
  .stats-grid { grid-template-columns: repeat(2, 1fr); gap: 10px; }
  .stat-card { padding: 10px 12px; }
  .stat-icon { width: 36px; height: 36px; font-size: 15px; }
  .stat-number { font-size: 18px; }

  /* 密度切换隐藏 */
  .view-density-picker { display: none; }

  /* 卡片网格更小 */
  .tools-grid {
    grid-template-columns: repeat(auto-fill, minmax(110px, 1fr));
    gap: 8px;
  }

  .tool-card { padding: 14px 8px 12px; }
  .tool-icon { width: 38px; height: 38px; }
  .tool-name { font-size: 12px; }
  .tool-desc { display: none; }

  .tool-card.span-2 {
    grid-column: span 1;
    flex-direction: column;
    text-align: center;
    gap: 4px;
    padding: 14px 8px;
  }

  .category-header { margin: 18px 0 10px; font-size: 14px; }

  /* Logo 小尺寸 */
  .brand-logo, .brand-logo-emoji, .brand-logo-letter,
  .tool-card .brand-logo, .tool-card .brand-logo-emoji, .tool-card .brand-logo-letter {
    width: 38px; height: 38px;
  }

  /* 返回顶部位置调整 */
  .back-to-top { bottom: 20px; right: 20px; width: 40px; height: 40px; }

  /* 搜索弹窗适配 */
  .search-modal { width: 95vw; }

  /* 收藏夹网格调整 */
  .favorites-grid { grid-template-columns: repeat(auto-fill, minmax(120px, 1fr)); padding: 10px 14px; }

  /* 提交弹窗适配 */
  .submit-modal { width: 95vw; max-height: 88vh; }
  .submit-modal-body { padding: 16px; }

  /* 快捷工具网格 */
  .quick-tools-grid { grid-template-columns: repeat(2, 1fr); gap: 6px; padding: 6px 8px 10px; }
  .quick-tool-btn { padding: 6px 6px; font-size: 11px; }

  /* 徽章隐藏部分 */
  .card-badges { right: 6px; top: 6px; gap: 3px; }
  .badge { font-size: 10px; padding: 2px 6px; }
}

/* <= 480px: 更紧凑 */
@media (max-width: 480px) {
  .datetime-bar { padding: 12px; }
  .time-big { font-size: 26px; }
  .date-info { gap: 0; }
  .date-main { font-size: 12px; }
  .date-lunar { font-size: 11px; }
  .week-badge { font-size: 11px; padding: 3px 8px; }

  .ip-location-bar { font-size: 10px; gap: 6px; }

  .stats-panel { padding: 12px 14px; margin-bottom: 14px; }
  .stats-grid { grid-template-columns: repeat(2, 1fr); gap: 8px; }
  .stat-card { padding: 8px 10px; }
  .stat-icon { width: 32px; height: 32px; font-size: 14px; }
  .stat-number { font-size: 16px; }
  .stat-label { font-size: 11px; }

  .tools-grid {
    grid-template-columns: repeat(3, 1fr);
    gap: 6px;
  }

  .tool-card { padding: 10px 6px; }
  .tool-icon { width: 34px; height: 34px; }
  .tool-name { font-size: 11px; }
  .tool-desc { display: none; }

  .featured-section { padding: 10px 12px; }
  .featured-item { padding: 7px 10px; font-size: 11.5px; }
  .featured-item-icon { width: 22px; height: 22px; font-size: 12px; }

  .quick-tools-grid { grid-template-columns: repeat(2, 1fr); }

  .tools-grid.list-view .tool-desc { display: none; }
  .tools-grid.list-view .tool-icon { width: 24px; height: 24px; }

  .back-to-top { bottom: 16px; right: 16px; width: 36px; height: 36px; }
}

/* ================================================================
   24. 打印样式
   ================================================================ */
@media print {
  .sidebar, .sidebar-right, .mobile-menu-btn, .mobile-overlay,
  .back-to-top, .search-section, .theme-toggle, #cardTooltip,
  .search-modal-overlay, .reading-progress, .stats-panel,
  .favorites-section, .recent-section, .submit-modal-overlay,
  .toast-container, .view-density-picker { display: none !important; }

  .main-content { margin-left: 0 !important; }
  .top-bar { position: static; box-shadow: none; border: none; }

  .tool-card {
    break-inside: avoid;
    box-shadow: none;
    border: 1px solid #ddd;
    transform: none !important;
    opacity: 1 !important;
  }

  .brand-logo, .brand-logo-emoji, .brand-logo-letter {
    box-shadow: none; transform: none;
  }

  body { background: #fff; color: #000; }
}

/* ================================================================
   25. prefers-reduced-motion 无障碍支持
   ================================================================ */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }

  .brand-logo-loading { animation: none; background: var(--border-color); }
  .brand-logo[data-retry-count] { animation: none; }
  .search-glass.idle-pulse { animation: none; }
  .notice-badge, .badge { animation: none; }
  html { scroll-behavior: auto; }
}

/* ================================================================
   26. v6.0额外：骨架屏加载状态
   ================================================================ */
.skeleton {
  background: linear-gradient(
    90deg,
    var(--border-color) 25%,
    var(--border-light) 50%,
    var(--border-color) 75%
  );
  background-size: 200% 100%;
  animation: skeleton-loading 1.5s ease infinite;
  border-radius: var(--radius-sm);
}

@keyframes skeleton-loading {
  0% { background-position: 200% 0; }
  100% { background-position: -200% 0; }
}

.skeleton-card {
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: 18px 12px 14px;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
}

.skeleton-avatar {
  width: 44px;
  height: 44px;
  border-radius: var(--radius-md);
  margin-bottom: 10px;
}

.skeleton-text {
  width: 70%;
  height: 14px;
  margin-bottom: 6px;
  border-radius: 4px;
}

.skeleton-text.short { width: 45%; height: 12px; }

/* [v7.5.3] 懒加载骨架屏网格 */
.skeleton-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  gap: 12px;
  padding: 8px 0;
}
.skeleton-grid .skeleton-card {
  height: 100px;
  border-radius: var(--radius-lg);
}

/* [v7.3.0] 删除冗余：1100px断点与1024px重复，统一使用1024px */

/* 移动端：further adjustments */
@media (max-width: 768px) {
  .main-content {
    margin-left: 0;
  }
  .content-wrapper {
    padding: 0 16px 16px;
  }
  /* sidebar becomes overlay on mobile */
  .sidebar {
    transform: translateX(-100%);
  }
  .sidebar.open {
    transform: translateX(0);
  }
}

/* ================================================================
   [v7.5.3] 图标加载失败兜底样式
   ================================================================ */
.icon-fallback {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: linear-gradient(135deg, #6366f1, #8b5cf6);
  color: #fff;
  font-size: 18px;
  font-weight: 700;
  flex-shrink: 0;
}

/* ================================================================
   顶部信息栏（时间/IP/天气）
   ================================================================ */
.top-info-bar {
  display: flex;
  align-items: center;
  gap: 16px;
  flex-wrap: wrap;
  background: var(--bg-glass);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 10px 18px;
  margin-bottom: 18px;
  font-size: 13px;
  color: var(--text-secondary);
  backdrop-filter: blur(10px);
}
.top-info-item {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  white-space: nowrap;
}
.top-info-item i {
  color: var(--accent);
  font-size: 14px;
}
.top-info-sep {
  color: var(--border-color);
  margin: 0 2px;
}
.top-info-sub {
  color: var(--text-muted);
  font-size: 12px;
}
@media (max-width: 640px) {
  .top-info-bar {
    flex-direction: column;
    align-items: flex-start;
    gap: 6px;
    padding: 8px 14px;
  }
}

/* ================================================================
   [v7.5.3] 查看更多按钮
   ================================================================ */
.view-more-wrapper {
  grid-column: 1 / -1;
  text-align: center;
  padding: 12px 0;
}
.view-more-btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 8px 20px;
  font-size: 13px;
  color: var(--primary-blue);
  background: rgba(59, 130, 246, 0.08);
  border: 1px solid rgba(59, 130, 246, 0.2);
  border-radius: var(--radius-full);
  cursor: pointer;
  transition: all var(--transition-fast);
}
.view-more-btn:hover {
  background: rgba(59, 130, 246, 0.15);
  border-color: rgba(59, 130, 246, 0.35);
}

/* ================================================================
   [v7.5.3] 搜索结果显示分组标签
   ================================================================ */
.search-result-group {
  display: inline-block;
  padding: 2px 8px;
  font-size: 11px;
  font-weight: 500;
  color: var(--primary-blue);
  background: rgba(59, 130, 246, 0.08);
  border-radius: var(--radius-full);
  margin-left: 8px;
  vertical-align: middle;
}