/* ========================================
   数据看板与趋势报告站 - 主样式表
   仪表盘风格 | 暗色高级感 | 移动端优先
   ======================================== */

:root {
  --color-primary: #00d4ff;
  --color-primary-dark: #0099cc;
  --color-secondary: #7c3aed;
  --color-accent: #10b981;
  --color-warning: #f59e0b;
  --color-danger: #ef4444;
  --color-bg-deep: #0a0e1a;
  --color-bg-main: #0f1629;
  --color-bg-card: #1a2340;
  --color-bg-card-hover: #1f2b4d;
  --color-border: #2a3a5c;
  --color-border-light: #3a4a6c;
  --color-text-primary: #e8edf5;
  --color-text-secondary: #94a3b8;
  --color-text-muted: #64748b;
  --color-gradient-start: #00d4ff;
  --color-gradient-end: #7c3aed;
  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 16px;
  --radius-xl: 24px;
  --shadow-card: 0 4px 24px rgba(0, 0, 0, 0.3);
  --shadow-glow: 0 0 20px rgba(0, 212, 255, 0.15);
  --shadow-hover: 0 8px 32px rgba(0, 212, 255, 0.2);
  --transition-fast: 0.2s ease;
  --transition-normal: 0.3s ease;
  --transition-slow: 0.5s ease;
  --font-main: -apple-system, "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
  --font-mono: "JetBrains Mono", "Fira Code", monospace;
  --spacing-xs: 4px;
  --spacing-sm: 8px;
  --spacing-md: 16px;
  --spacing-lg: 24px;
  --spacing-xl: 32px;
  --spacing-2xl: 48px;
  --spacing-3xl: 64px;
  --max-width: 1280px;
}

/* 重置与基础 */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
  font-size: 16px;
}

body {
  font-family: var(--font-main);
  background-color: var(--color-bg-deep);
  color: var(--color-text-primary);
  line-height: 1.7;
  min-height: 100vh;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

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

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

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

ul, ol {
  list-style: none;
}

/* 排版 */
h1, h2, h3, h4, h5, h6 {
  color: var(--color-text-primary);
  line-height: 1.3;
  font-weight: 700;
}

h1 { font-size: 2.2rem; margin-bottom: var(--spacing-lg); }
h2 { font-size: 1.7rem; margin-bottom: var(--spacing-md); }
h3 { font-size: 1.3rem; margin-bottom: var(--spacing-sm); }
h4 { font-size: 1.1rem; margin-bottom: var(--spacing-sm); }

p {
  margin-bottom: var(--spacing-md);
  color: var(--color-text-secondary);
}

/* 容器 */
.container {
  width: 100%;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 var(--spacing-md);
}

/* 头部导航 */
.site-header {
  position: sticky;
  top: 0;
  z-index: 1000;
  background: rgba(10, 14, 26, 0.92);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--color-border);
  padding: var(--spacing-md) 0;
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 var(--spacing-md);
}

.site-logo {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--color-text-primary);
}

.site-logo img {
  width: 36px;
  height: 36px;
  border-radius: var(--radius-sm);
}

/* 桌面导航 */
.nav-desktop {
  display: none;
}

.nav-desktop ul {
  display: flex;
  gap: var(--spacing-lg);
  align-items: center;
}

.nav-desktop a {
  color: var(--color-text-secondary);
  font-size: 0.9rem;
  font-weight: 500;
  padding: var(--spacing-xs) 0;
  position: relative;
  transition: color var(--transition-fast);
}

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

.nav-desktop a::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--color-primary);
  transition: width var(--transition-normal);
}

.nav-desktop a:hover::after,
.nav-desktop a.active::after {
  width: 100%;
}

/* 移动菜单按钮 */
.menu-toggle {
  display: flex;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: var(--spacing-sm);
}

.menu-toggle span {
  width: 24px;
  height: 2px;
  background: var(--color-text-primary);
  transition: transform var(--transition-normal), opacity var(--transition-normal);
  border-radius: 2px;
}

.menu-toggle.active span:nth-child(1) {
  transform: rotate(45deg) translate(5px, 5px);
}

.menu-toggle.active span:nth-child(2) {
  opacity: 0;
}

.menu-toggle.active span:nth-child(3) {
  transform: rotate(-45deg) translate(5px, -5px);
}

/* 移动端导航菜单 */
.nav-mobile {
  display: none;
  position: fixed;
  top: 65px;
  left: 0;
  right: 0;
  bottom: 0;
  background: var(--color-bg-main);
  z-index: 999;
  padding: var(--spacing-xl);
  overflow-y: auto;
}

.nav-mobile.active {
  display: block;
  animation: slideDown 0.3s ease;
}

.nav-mobile ul {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-md);
}

.nav-mobile a {
  display: block;
  padding: var(--spacing-md);
  color: var(--color-text-secondary);
  font-size: 1.1rem;
  border-radius: var(--radius-md);
  transition: background var(--transition-fast), color var(--transition-fast);
}

.nav-mobile a:hover,
.nav-mobile a.active {
  background: var(--color-bg-card);
  color: var(--color-primary);
}

/* 首屏英雄区 */
.hero-section {
  position: relative;
  padding: var(--spacing-3xl) 0;
  overflow: hidden;
  background: linear-gradient(135deg, var(--color-bg-deep) 0%, var(--color-bg-main) 50%, rgba(124, 58, 237, 0.1) 100%);
}

.hero-section::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: url('../img/hero-banner.webp') center/cover no-repeat;
  opacity: 0.15;
  z-index: 0;
}

.hero-content {
  position: relative;
  z-index: 1;
  text-align: center;
  max-width: 800px;
  margin: 0 auto;
}

.hero-content h1 {
  font-size: 2.5rem;
  background: linear-gradient(135deg, var(--color-gradient-start), var(--color-gradient-end));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  margin-bottom: var(--spacing-md);
}

.hero-subtitle {
  font-size: 1.15rem;
  color: var(--color-text-secondary);
  margin-bottom: var(--spacing-xl);
  line-height: 1.8;
}

.hero-stats {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--spacing-md);
  margin-top: var(--spacing-xl);
}

.hero-stat-card {
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--spacing-lg);
  text-align: center;
  transition: transform var(--transition-normal), box-shadow var(--transition-normal);
}

.hero-stat-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-hover);
}

.hero-stat-number {
  font-size: 2rem;
  font-weight: 800;
  color: var(--color-primary);
  font-family: var(--font-mono);
}

.hero-stat-label {
  font-size: 0.85rem;
  color: var(--color-text-muted);
  margin-top: var(--spacing-xs);
}

/* 数据卡片 */
.data-card {
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--spacing-lg);
  transition: transform var(--transition-normal), box-shadow var(--transition-normal), border-color var(--transition-normal);
}

.data-card:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-hover);
  border-color: var(--color-primary);
}

.data-card-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: var(--spacing-md);
}

.data-card-icon {
  width: 42px;
  height: 42px;
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.3rem;
  background: linear-gradient(135deg, rgba(0, 212, 255, 0.15), rgba(124, 58, 237, 0.15));
  border: 1px solid rgba(0, 212, 255, 0.3);
}

.data-card-value {
  font-size: 1.8rem;
  font-weight: 800;
  color: var(--color-text-primary);
  font-family: var(--font-mono);
}

.data-card-change {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  font-size: 0.8rem;
  padding: 2px 8px;
  border-radius: 20px;
  font-weight: 600;
}

.data-card-change.up {
  color: var(--color-accent);
  background: rgba(16, 185, 129, 0.1);
}

.data-card-change.down {
  color: var(--color-danger);
  background: rgba(239, 68, 68, 0.1);
}

.data-card-title {
  font-size: 0.85rem;
  color: var(--color-text-muted);
  margin-top: var(--spacing-sm);
}

/* 栏目区块 */
.section {
  padding: var(--spacing-3xl) 0;
}

.section-header {
  text-align: center;
  margin-bottom: var(--spacing-2xl);
}

.section-header h2 {
  position: relative;
  display: inline-block;
}

.section-header h2::after {
  content: '';
  position: absolute;
  bottom: -8px;
  left: 50%;
  transform: translateX(-50%);
  width: 60px;
  height: 3px;
  background: linear-gradient(90deg, var(--color-gradient-start), var(--color-gradient-end));
  border-radius: 3px;
}

.section-desc {
  color: var(--color-text-secondary);
  max-width: 600px;
  margin: var(--spacing-md) auto 0;
  font-size: 0.95rem;
}

/* 网格布局 */
.grid-2 {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--spacing-lg);
}

.grid-3 {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--spacing-lg);
}

.grid-4 {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--spacing-md);
}

/* 趋势图表容器 */
.chart-container {
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--spacing-lg);
  position: relative;
  overflow: hidden;
}

.chart-container img {
  border-radius: var(--radius-md);
  width: 100%;
  height: auto;
}

.chart-label {
  position: absolute;
  top: var(--spacing-md);
  left: var(--spacing-lg);
  font-size: 0.8rem;
  color: var(--color-text-muted);
  background: rgba(10, 14, 26, 0.7);
  padding: 4px 12px;
  border-radius: 20px;
  backdrop-filter: blur(4px);
}

/* 报告卡片 */
.report-card {
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--spacing-xl);
  display: flex;
  flex-direction: column;
  gap: var(--spacing-md);
  transition: all var(--transition-normal);
}

.report-card:hover {
  border-color: var(--color-primary);
  box-shadow: var(--shadow-glow);
}

.report-card-tag {
  display: inline-block;
  font-size: 0.75rem;
  padding: 4px 12px;
  border-radius: 20px;
  background: rgba(0, 212, 255, 0.1);
  color: var(--color-primary);
  border: 1px solid rgba(0, 212, 255, 0.3);
  width: fit-content;
}

.report-card h3 a {
  color: var(--color-text-primary);
  transition: color var(--transition-fast);
}

.report-card h3 a:hover {
  color: var(--color-primary);
}

.report-card-meta {
  display: flex;
  gap: var(--spacing-md);
  font-size: 0.8rem;
  color: var(--color-text-muted);
}

/* 按钮 */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--spacing-sm);
  padding: 12px 24px;
  border-radius: var(--radius-md);
  font-size: 0.9rem;
  font-weight: 600;
  border: none;
  cursor: pointer;
  transition: all var(--transition-normal);
  text-decoration: none;
}

.btn-primary {
  background: linear-gradient(135deg, var(--color-gradient-start), var(--color-gradient-end));
  color: #fff;
  box-shadow: 0 4px 16px rgba(0, 212, 255, 0.3);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 24px rgba(0, 212, 255, 0.4);
  color: #fff;
}

.btn-outline {
  background: transparent;
  color: var(--color-primary);
  border: 1px solid var(--color-primary);
}

.btn-outline:hover {
  background: rgba(0, 212, 255, 0.1);
  color: var(--color-primary);
}

.btn-sm {
  padding: 8px 16px;
  font-size: 0.8rem;
}

/* 面包屑 */
.breadcrumb {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  padding: var(--spacing-md) 0;
  font-size: 0.85rem;
  color: var(--color-text-muted);
  flex-wrap: wrap;
}

.breadcrumb a {
  color: var(--color-text-muted);
}

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

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

/* FAQ 手风琴 */
.faq-list {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-md);
}

.faq-item {
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  overflow: hidden;
  transition: border-color var(--transition-normal);
}

.faq-item.active {
  border-color: var(--color-primary);
}

.faq-question {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--spacing-lg);
  cursor: pointer;
  font-weight: 600;
  color: var(--color-text-primary);
  transition: color var(--transition-fast);
}

.faq-question:hover {
  color: var(--color-primary);
}

.faq-arrow {
  font-size: 1.2rem;
  transition: transform var(--transition-normal);
  color: var(--color-text-muted);
}

.faq-item.active .faq-arrow {
  transform: rotate(180deg);
  color: var(--color-primary);
}

.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height var(--transition-slow), padding var(--transition-normal);
}

.faq-item.active .faq-answer {
  max-height: 500px;
  padding: 0 var(--spacing-lg) var(--spacing-lg);
}

.faq-answer p {
  color: var(--color-text-secondary);
  line-height: 1.8;
}

/* 搜索框 */
.search-box {
  position: relative;
  max-width: 500px;
  margin: 0 auto;
}

.search-input {
  width: 100%;
  padding: 14px 20px 14px 48px;
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  color: var(--color-text-primary);
  font-size: 0.95rem;
  outline: none;
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.search-input:focus {
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(0, 212, 255, 0.1);
}

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

.search-icon {
  position: absolute;
  left: 18px;
  top: 50%;
  transform: translateY(-50%);
  color: var(--color-text-muted);
  font-size: 1.1rem;
}

.search-suggestions {
  display: none;
  position: absolute;
  top: calc(100% + 8px);
  left: 0;
  right: 0;
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-card);
  z-index: 100;
  max-height: 300px;
  overflow-y: auto;
}

.search-suggestions.active {
  display: block;
}

.search-suggestion-item {
  padding: var(--spacing-md) var(--spacing-lg);
  cursor: pointer;
  border-bottom: 1px solid var(--color-border);
  transition: background var(--transition-fast);
}

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

.search-suggestion-item:hover {
  background: var(--color-bg-card-hover);
}

.search-suggestion-item h4 {
  font-size: 0.9rem;
  color: var(--color-text-primary);
  margin-bottom: 4px;
}

.search-suggestion-item p {
  font-size: 0.8rem;
  color: var(--color-text-muted);
  margin: 0;
}

/* 榜单切换 */
.tab-nav {
  display: flex;
  gap: var(--spacing-sm);
  margin-bottom: var(--spacing-lg);
  overflow-x: auto;
  padding-bottom: var(--spacing-sm);
}

.tab-btn {
  padding: 8px 20px;
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  color: var(--color-text-secondary);
  font-size: 0.85rem;
  cursor: pointer;
  white-space: nowrap;
  transition: all var(--transition-fast);
}

.tab-btn.active,
.tab-btn:hover {
  background: rgba(0, 212, 255, 0.1);
  border-color: var(--color-primary);
  color: var(--color-primary);
}

.tab-panel {
  display: none;
}

.tab-panel.active {
  display: block;
  animation: fadeIn 0.3s ease;
}

/* 订阅区域 */
.subscribe-section {
  background: linear-gradient(135deg, rgba(0, 212, 255, 0.05), rgba(124, 58, 237, 0.05));
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--spacing-2xl);
  text-align: center;
}

.subscribe-form {
  display: flex;
  gap: var(--spacing-sm);
  max-width: 400px;
  margin: var(--spacing-lg) auto 0;
}

.subscribe-form input {
  flex: 1;
  padding: 12px 16px;
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  color: var(--color-text-primary);
  font-size: 0.9rem;
  outline: none;
}

.subscribe-form input:focus {
  border-color: var(--color-primary);
}

/* 页脚 */
.site-footer {
  background: var(--color-bg-main);
  border-top: 1px solid var(--color-border);
  padding: var(--spacing-3xl) 0 var(--spacing-xl);
}

.footer-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--spacing-xl);
  margin-bottom: var(--spacing-2xl);
}

.footer-brand {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--color-text-primary);
  margin-bottom: var(--spacing-md);
}

.footer-brand img {
  width: 28px;
  height: 28px;
  border-radius: var(--radius-sm);
}

.footer-desc {
  font-size: 0.85rem;
  color: var(--color-text-muted);
  line-height: 1.7;
}

.footer-col h4 {
  color: var(--color-text-primary);
  font-size: 0.9rem;
  margin-bottom: var(--spacing-md);
}

.footer-col ul {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-sm);
}

.footer-col a {
  color: var(--color-text-muted);
  font-size: 0.85rem;
  transition: color var(--transition-fast);
}

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

.footer-bottom {
  border-top: 1px solid var(--color-border);
  padding-top: var(--spacing-lg);
  display: flex;
  flex-direction: column;
  gap: var(--spacing-md);
  align-items: center;
  text-align: center;
}

.footer-bottom p {
  font-size: 0.8rem;
  color: var(--color-text-muted);
  margin: 0;
}

.footer-links {
  display: flex;
  flex-wrap: wrap;
  gap: var(--spacing-md);
  justify-content: center;
}

.footer-links a {
  font-size: 0.8rem;
  color: var(--color-text-muted);
}

/* 返回顶部 */
.back-to-top {
  position: fixed;
  bottom: 24px;
  right: 24px;
  width: 44px;
  height: 44px;
  background: var(--color-primary);
  color: #fff;
  border: none;
  border-radius: 50%;
  font-size: 1.2rem;
  cursor: pointer;
  display: none;
  align-items: center;
  justify-content: center;
  box-shadow: 0 4px 16px rgba(0, 212, 255, 0.4);
  transition: transform var(--transition-fast), opacity var(--transition-fast);
  z-index: 900;
}

.back-to-top.visible {
  display: flex;
}

.back-to-top:hover {
  transform: scale(1.1);
}

/* PWA 安装提示 */
.pwa-prompt {
  display: none;
  position: fixed;
  bottom: 80px;
  left: 50%;
  transform: translateX(-50%);
  background: var(--color-bg-card);
  border: 1px solid var(--color-primary);
  border-radius: var(--radius-lg);
  padding: var(--spacing-lg);
  box-shadow: var(--shadow-card);
  z-index: 1000;
  max-width: 360px;
  width: calc(100% - 32px);
  text-align: center;
}

.pwa-prompt.visible {
  display: block;
  animation: slideUp 0.4s ease;
}

.pwa-prompt h4 {
  margin-bottom: var(--spacing-sm);
  color: var(--color-text-primary);
}

.pwa-prompt p {
  font-size: 0.85rem;
  color: var(--color-text-muted);
  margin-bottom: var(--spacing-md);
}

.pwa-prompt-actions {
  display: flex;
  gap: var(--spacing-sm);
  justify-content: center;
}

/* 提交成功提示 */
.toast {
  position: fixed;
  top: 80px;
  right: 24px;
  background: var(--color-bg-card);
  border: 1px solid var(--color-accent);
  border-radius: var(--radius-md);
  padding: var(--spacing-md) var(--spacing-lg);
  color: var(--color-accent);
  font-size: 0.9rem;
  box-shadow: var(--shadow-card);
  z-index: 1100;
  display: none;
  animation: slideRight 0.3s ease;
}

.toast.visible {
  display: block;
}

/* 合规提醒条 */
.compliance-bar {
  background: rgba(245, 158, 11, 0.08);
  border: 1px solid rgba(245, 158, 11, 0.3);
  border-radius: var(--radius-md);
  padding: var(--spacing-md) var(--spacing-lg);
  margin: var(--spacing-lg) 0;
  font-size: 0.85rem;
  color: var(--color-warning);
  display: flex;
  align-items: flex-start;
  gap: var(--spacing-sm);
}

.compliance-bar a {
  color: var(--color-warning);
  text-decoration: underline;
}

/* 内页内容区 */
.page-content {
  padding: var(--spacing-2xl) 0;
  min-height: 60vh;
}

.page-content h1 {
  margin-bottom: var(--spacing-lg);
}

.content-block {
  margin-bottom: var(--spacing-2xl);
}

.content-block h2 {
  margin-bottom: var(--spacing-md);
  padding-bottom: var(--spacing-sm);
  border-bottom: 1px solid var(--color-border);
}

/* 列表样式 */
.info-list {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-md);
}

.info-list-item {
  display: flex;
  align-items: flex-start;
  gap: var(--spacing-md);
  padding: var(--spacing-md);
  background: var(--color-bg-card);
  border-radius: var(--radius-md);
  border: 1px solid var(--color-border);
}

.info-list-item .item-number {
  min-width: 32px;
  height: 32px;
  background: linear-gradient(135deg, var(--color-gradient-start), var(--color-gradient-end));
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.8rem;
  font-weight: 700;
  color: #fff;
}

/* 表格 */
.data-table {
  width: 100%;
  border-collapse: collapse;
  margin: var(--spacing-lg) 0;
}

.data-table th,
.data-table td {
  padding: var(--spacing-md);
  text-align: left;
  border-bottom: 1px solid var(--color-border);
  font-size: 0.85rem;
}

.data-table th {
  background: var(--color-bg-card);
  color: var(--color-text-muted);
  font-weight: 600;
  text-transform: uppercase;
  font-size: 0.75rem;
  letter-spacing: 0.5px;
}

.data-table td {
  color: var(--color-text-secondary);
}

.data-table tr:hover td {
  background: var(--color-bg-card-hover);
}

/* 时间线 */
.timeline {
  position: relative;
  padding-left: var(--spacing-xl);
}

.timeline::before {
  content: '';
  position: absolute;
  left: 8px;
  top: 0;
  bottom: 0;
  width: 2px;
  background: var(--color-border);
}

.timeline-item {
  position: relative;
  margin-bottom: var(--spacing-xl);
  padding: var(--spacing-md);
  background: var(--color-bg-card);
  border-radius: var(--radius-md);
  border: 1px solid var(--color-border);
}

.timeline-item::before {
  content: '';
  position: absolute;
  left: calc(-1 * var(--spacing-xl) + 4px);
  top: var(--spacing-lg);
  width: 10px;
  height: 10px;
  background: var(--color-primary);
  border-radius: 50%;
  box-shadow: 0 0 8px rgba(0, 212, 255, 0.5);
}

.timeline-date {
  font-size: 0.75rem;
  color: var(--color-primary);
  font-weight: 600;
  margin-bottom: var(--spacing-xs);
}

/* 标签 */
.tag {
  display: inline-block;
  padding: 3px 10px;
  font-size: 0.7rem;
  border-radius: 20px;
  background: rgba(0, 212, 255, 0.1);
  color: var(--color-primary);
  border: 1px solid rgba(0, 212, 255, 0.2);
}

.tag-purple {
  background: rgba(124, 58, 237, 0.1);
  color: var(--color-secondary);
  border-color: rgba(124, 58, 237, 0.2);
}

.tag-green {
  background: rgba(16, 185, 129, 0.1);
  color: var(--color-accent);
  border-color: rgba(16, 185, 129, 0.2);
}

.tag-orange {
  background: rgba(245, 158, 11, 0.1);
  color: var(--color-warning);
  border-color: rgba(245, 158, 11, 0.2);
}

/* 动画 */
@keyframes fadeIn {
  from { opacity: 0; }
  to { opacity: 1; }
}

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

@keyframes slideUp {
  from { opacity: 0; transform: translate(-50%, 20px); }
  to { opacity: 1; transform: translate(-50%, 0); }
}

@keyframes slideRight {
  from { opacity: 0; transform: translateX(20px); }
  to { opacity: 1; transform: translateX(0); }
}

/* 响应式断点 */
@media (min-width: 768px) {
  h1 { font-size: 2.8rem; }
  h2 { font-size: 2rem; }

  .hero-content h1 { font-size: 3.2rem; }
  .hero-stats { grid-template-columns: repeat(4, 1fr); }

  .grid-2 { grid-template-columns: repeat(2, 1fr); }
  .grid-3 { grid-template-columns: repeat(2, 1fr); }
  .grid-4 { grid-template-columns: repeat(4, 1fr); }

  .nav-desktop { display: block; }
  .menu-toggle { display: none; }

  .footer-grid { grid-template-columns: 2fr 1fr 1fr 1fr; }
  .footer-bottom { flex-direction: row; justify-content: space-between; }

  .subscribe-form { flex-direction: row; }
}

@media (min-width: 1024px) {
  .grid-3 { grid-template-columns: repeat(3, 1fr); }

  .container { padding: 0 var(--spacing-xl); }
}

@media (min-width: 1280px) {
  .hero-section { padding: var(--spacing-3xl) 0 calc(var(--spacing-3xl) + 20px); }
}

/* 打印样式 */
@media print {
  .site-header, .site-footer, .back-to-top, .pwa-prompt, .menu-toggle, .nav-mobile {
    display: none !important;
  }
  body {
    background: #fff;
    color: #000;
  }
}