/**
 * 阿牛工作室 - 公共样式表
 * 版本: v20260303 (优化版)
 * 更新日期: 2026-03-03
 * 
 * 优化内容:
 * - 完善深色模式支持
 * - 优化性能（使用CSS变量、减少重绘）
 * - 修复导航栏样式
 * - 提升用户体验
 */

/* ============================================
   1. CSS变量定义
   ============================================ */
:root {
  /* 主色调 */
  --primary: #D54053;
  --primary-light: rgba(213, 64, 83, 0.6);
  --primary-lighter: rgba(213, 64, 83, 0.4);
  --secondary: #FFF5F5;
  --secondary-light: #FFF0F2;
  
  /* 中性色 */
  --dark: #333333;
  --light: #F8F8F8;
  --footer: #F5F5F5;
  --white: #FFFFFF;
  --green: #4CAF50;
  
  /* 灰色阶梯 */
  --gray-50: #F9FAFB;
  --gray-100: #F3F4F6;
  --gray-200: #E5E7EB;
  --gray-300: #D1D5DB;
  --gray-400: #9CA3AF;
  --gray-500: #6B7280;
  --gray-600: #4B5563;
  --gray-700: #374151;
  --gray-800: #1F2937;
  --gray-900: #111827;
  
  /* 深色模式颜色 - 提高对比度 */
  --dark-bg: #0D0D0D;
  --dark-card: #1A1A1A;
  --dark-card-hover: #252525;
  --dark-text-primary: #FFFFFF;
  --dark-text-secondary: #E8E8E8;
  --dark-text-tertiary: #B8B8B8;
  --dark-border: #333333;
  --dark-table-header: #202020;
  
  /* 阴影效果 */
  --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
  --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
  --shadow-dark: 0 4px 6px -1px rgba(0, 0, 0, 0.3), 0 2px 4px -1px rgba(0, 0, 0, 0.2);
  
  /* 过渡动画 */
  --transition-fast: 0.15s ease;
  --transition-normal: 0.3s ease;
  --transition-slow: 0.5s ease;
}

/* ============================================
   2. 基础重置样式
   ============================================ */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
  -moz-tab-size: 4;
  tab-size: 4;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, 'Noto Sans', sans-serif, 'Apple Color Emoji', 'Segoe UI Emoji';
  background-color: var(--gray-50);
  color: var(--dark);
  line-height: 1.6;
  min-height: 100vh;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* 减少动画偏好 */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}

/* ============================================
   3. 深色模式适配 - 全面优化
   ============================================ */
body.dark-mode {
  background-color: var(--dark-bg);
  color: var(--dark-text-primary);
}

/* 3.1 卡片背景 - 全面覆盖 */
body.dark-mode .bg-white,
body.dark-mode .broker-card,
body.dark-mode .sidebar-card,
body.dark-mode .partner-item,
body.dark-mode .quant-card,
body.dark-mode .cooperation-card,
body.dark-mode .futures-type-card,
body.dark-mode .futures-process-section,
body.dark-mode .software-item,
body.dark-mode .channel-type-card,
body.dark-mode .package-card,
body.dark-mode .channel-compare-card,
body.dark-mode .channel-classify-content,
body.dark-mode .contact-card,
body.dark-mode .advantage-item {
  background-color: var(--dark-card);
  border-color: var(--dark-border);
}

/* 3.2 灰色背景 */
body.dark-mode .bg-gray-50 {
  background-color: var(--dark-table-header);
}

body.dark-mode .bg-gray-100 {
  background-color: #252525;
}

/* 3.3 头部和页脚 */
body.dark-mode .header {
  background-color: var(--dark-card);
  border-color: var(--dark-border);
}

body.dark-mode .footer {
  background-color: #141414;
  border-color: var(--dark-border);
}

/* 3.4 文字颜色 - 提高对比度 */
body.dark-mode .text-gray-500 {
  color: var(--dark-text-tertiary);
}

body.dark-mode .text-gray-600 {
  color: var(--dark-text-secondary);
}

body.dark-mode .text-gray-700 {
  color: var(--dark-text-primary);
}

/* 3.5 券商标签 */
body.dark-mode .broker-tags {
  color: var(--dark-text-secondary);
}

body.dark-mode .broker-tags .tag-item {
  background-color: rgba(213, 64, 83, 0.2);
  border-color: rgba(213, 64, 83, 0.4);
  color: #FFB3BA;
}

body.dark-mode .broker-tags .tag-item:hover {
  background-color: var(--primary);
  color: var(--white);
}

/* 3.6 合作伙伴 */
body.dark-mode .partner-item {
  color: var(--dark-text-secondary);
  border-color: var(--dark-border);
}

body.dark-mode .partner-item:hover {
  background-color: var(--dark-card-hover);
}

/* 3.7 边框 */
body.dark-mode .border-gray-200,
body.dark-mode .border-b,
body.dark-mode .border-t,
body.dark-mode .border {
  border-color: var(--dark-border);
}

body.dark-mode .border-gray-100 {
  border-color: #2A2A2A;
}

/* 3.8 表格 */
body.dark-mode .data-table th {
  background-color: var(--dark-table-header);
}

body.dark-mode .data-table th,
body.dark-mode .data-table td {
  border-color: var(--dark-border);
}

body.dark-mode .data-table tbody tr:hover {
  background-color: var(--dark-card-hover);
}

/* 3.9 二维码区域 */
body.dark-mode .qr-wrapper,
body.dark-mode .qr-wrapper-large {
  background-color: #252525;
}

/* 3.10 按钮悬停 */
body.dark-mode .btn-icon:hover {
  background-color: var(--dark-border);
}

/* 3.11 卡片悬停 */
body.dark-mode .card-hover:hover {
  background-color: var(--dark-card-hover);
}

/* 3.12 手风琴 */
body.dark-mode .accordion-item {
  border-color: var(--dark-border);
}

body.dark-mode .accordion-header {
  color: var(--dark-text-secondary);
}

body.dark-mode .accordion-header:hover {
  color: var(--primary);
}

body.dark-mode .accordion-content {
  color: var(--dark-text-tertiary);
}

/* 3.13 标签 */
body.dark-mode .type-tag {
  background-color: rgba(213, 64, 83, 0.2);
  border-color: var(--primary);
  color: #FFB3BA;
}

body.dark-mode .type-tag:hover {
  background-color: var(--primary);
  color: var(--white);
}

/* 3.14 优势项和特性项 */
body.dark-mode .advantage-item,
body.dark-mode .feature-item {
  background-color: #202020;
  border-color: var(--dark-border);
}

body.dark-mode .advantage-item:hover,
body.dark-mode .feature-item:hover {
  background-color: var(--dark-card-hover);
}

body.dark-mode .advantage-text {
  color: var(--dark-text-primary);
}

/* 3.15 电话区域 */
body.dark-mode .phone-section {
  background: linear-gradient(135deg, #2A2A2A 0%, var(--dark-card) 100%) !important;
  border-color: var(--dark-border);
}

body.dark-mode .phone-label,
body.dark-mode .cooperation-desc {
  color: var(--dark-text-secondary);
}

body.dark-mode .phone-number {
  color: var(--primary);
}

/* 3.16 提示框 */
body.dark-mode .tip-box {
  background-color: rgba(213, 64, 83, 0.15);
}

body.dark-mode .tip-box-content {
  color: var(--dark-text-secondary);
}

/* 3.17 图片标题 */
body.dark-mode .image-caption {
  background-color: #202020;
  border-color: var(--dark-border);
  color: var(--dark-text-tertiary);
}

/* 3.18 对比表格 */
body.dark-mode .compare-table th {
  background-color: #202020;
}

body.dark-mode .compare-table td {
  border-color: var(--dark-border);
  color: var(--dark-text-secondary);
}

body.dark-mode .compare-table tr:hover td {
  background-color: var(--dark-card-hover);
}

/* 3.19 期货页面特有 */
body.dark-mode .futures-type-desc,
body.dark-mode .process-step-desc {
  color: var(--dark-text-tertiary);
}

body.dark-mode .process-step:not(:last-child)::after {
  background: var(--dark-border);
}

body.dark-mode .futures-warning {
  background: linear-gradient(135deg, rgba(146, 64, 14, 0.3) 0%, rgba(120, 53, 15, 0.2) 100%);
  border: 1px solid rgba(251, 191, 36, 0.3);
}

body.dark-mode .futures-warning-title {
  color: #FBBF24;
}

body.dark-mode .futures-warning-text {
  color: #FDE68A;
}

/* 3.20 打板通道页面特有 */
body.dark-mode .channel-type-desc,
body.dark-mode .package-desc {
  color: var(--dark-text-tertiary);
}

body.dark-mode .channel-type-features li {
  color: var(--dark-text-secondary);
  border-color: var(--dark-border);
}

body.dark-mode .channel-tips {
  background: linear-gradient(135deg, rgba(30, 58, 138, 0.3) 0%, rgba(30, 64, 175, 0.2) 100%);
}

body.dark-mode .channel-tips-title {
  color: #93C5FD;
}

body.dark-mode .channel-tips-text {
  color: #BFDBFE;
}

body.dark-mode .compare-text {
  color: var(--dark-text-secondary);
}

body.dark-mode .classify-intro {
  color: var(--dark-text-primary);
  border-color: var(--dark-border);
}

body.dark-mode .classify-title {
  color: var(--dark-text-primary);
}

body.dark-mode .classify-desc {
  color: var(--dark-text-tertiary);
}

body.dark-mode .classify-analogy {
  background: linear-gradient(135deg, #202020 0%, #252525 100%);
  border-left-color: var(--primary);
}

body.dark-mode .classify-analogy p {
  color: var(--dark-text-secondary);
}

body.dark-mode .channel-notice {
  background: linear-gradient(135deg, rgba(146, 64, 14, 0.3) 0%, rgba(120, 53, 15, 0.2) 100%);
  border-color: #D97706;
}

body.dark-mode .channel-notice-title {
  color: #FCD34D;
}

body.dark-mode .channel-notice-text {
  color: #FDE68A;
}

/* 3.21 量化页面特有 */
body.dark-mode .section-text {
  color: var(--dark-text-secondary);
}

body.dark-mode .feature-desc {
  color: var(--dark-text-tertiary);
}

body.dark-mode .step-content p {
  color: var(--dark-text-tertiary);
}

body.dark-mode .quant-contact-section {
  background-color: var(--dark-card) !important;
}

body.dark-mode .quant-contact-section h3 {
  color: var(--dark-text-primary) !important;
}

body.dark-mode .quant-contact-section p {
  color: var(--dark-text-secondary) !important;
}

/* 3.22 业务合作页面特有 */
body.dark-mode .cooperation-title,
body.dark-mode .quant-title,
body.dark-mode .section-header-title,
body.dark-mode .futures-type-title,
body.dark-mode .process-step-title,
body.dark-mode .software-name,
body.dark-mode .channel-type-title,
body.dark-mode .package-title,
body.dark-mode .feature-title,
body.dark-mode .step-content h4 {
  color: var(--dark-text-primary);
}

/* 3.23 券商卡片深色模式 */
body.dark-mode .broker-tags {
  background-color: var(--dark-card);
}

body.dark-mode .broker-grid {
  background-color: var(--dark-card);
}

body.dark-mode .broker-grid-item {
  background-color: #202020;
  border-color: var(--dark-border);
}

body.dark-mode .broker-grid-item:hover {
  background-color: var(--dark-card-hover);
  border-color: var(--primary);
}

body.dark-mode .broker-grid-item .item-label {
  color: var(--dark-text-tertiary);
}

body.dark-mode .broker-grid-item .item-value {
  color: var(--dark-text-primary);
}

body.dark-mode .broker-grid-item .item-note {
  color: var(--dark-text-tertiary);
}

body.dark-mode .broker-footer {
  background-color: #141414;
  border-color: var(--dark-border);
  color: var(--dark-text-tertiary);
}

/* 3.24 API文档链接 */
body.dark-mode .api-doc-link {
  background: linear-gradient(135deg, #202020 0%, var(--dark-card) 100%);
  border-color: var(--dark-border);
}

body.dark-mode .api-doc-link:hover {
  background: linear-gradient(135deg, rgba(213, 64, 83, 0.2) 0%, var(--dark-card) 100%);
  border-color: var(--primary);
}

body.dark-mode .api-doc-text {
  color: var(--dark-text-primary);
}

/* 3.25 底部导航 */
body.dark-mode .mobile-bottom-nav {
  background-color: var(--dark-card);
  border-color: var(--dark-border);
}

body.dark-mode .mobile-bottom-nav-link {
  color: #888888;
}

body.dark-mode .mobile-bottom-nav-link:hover,
body.dark-mode .mobile-bottom-nav-link.active {
  color: var(--primary);
  background-color: rgba(213, 64, 83, 0.15);
}

/* 3.26 联系项 */
body.dark-mode .contact-item {
  background-color: #202020;
}

body.dark-mode .contact-item-label {
  color: var(--dark-text-tertiary);
}

body.dark-mode .contact-item-value {
  color: var(--dark-text-primary);
}

/* 3.27 夜盘服务区域 */
body.dark-mode .night-trading-section {
  background: linear-gradient(135deg, #1a1a2e 0%, #16213e 100%);
}

body.dark-mode .night-trading-item {
  background: rgba(255,255,255,0.05);
}

/* 3.28 合作特性列表 */
body.dark-mode .cooperation-features li {
  color: var(--dark-text-secondary);
}

/* 3.29 渠道类型卡片 */
body.dark-mode .channel-type-card.vip .channel-type-icon {
  background: linear-gradient(135deg, rgba(59, 130, 246, 0.2) 0%, rgba(37, 99, 235, 0.2) 100%);
}

body.dark-mode .channel-type-card.speed .channel-type-icon {
  background: linear-gradient(135deg, rgba(16, 185, 129, 0.2) 0%, rgba(5, 150, 105, 0.2) 100%);
}

body.dark-mode .channel-type-card.exclusive .channel-type-icon {
  background: linear-gradient(135deg, rgba(245, 158, 11, 0.2) 0%, rgba(217, 119, 6, 0.2) 100%);
}

/* 3.30 温馨提示区域 */
body.dark-mode .cooperation-tips {
  background: linear-gradient(135deg, rgba(30, 58, 138, 0.3) 0%, rgba(30, 64, 175, 0.2) 100%);
}

body.dark-mode .cooperation-tips-title {
  color: #93C5FD;
}

body.dark-mode .cooperation-tips-text {
  color: #BFDBFE;
}

/* ============================================
   4. 布局系统
   ============================================ */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 16px;
}

.flex { display: flex; }
.flex-col { flex-direction: column; }
.items-center { align-items: center; }
.justify-between { justify-content: space-between; }
.justify-center { justify-content: center; }

.gap-3 { gap: 12px; }
.gap-6 { gap: 24px; }
.gap-8 { gap: 32px; }
.gap-12 { gap: 48px; }

.text-center { text-align: center; }
.text-left { text-align: left; }

/* ============================================
   5. 间距系统
   ============================================ */
.p-2 { padding: 8px; }
.p-3 { padding: 12px; }
.p-4 { padding: 16px; }
.p-5 { padding: 20px; }
.p-6 { padding: 24px; }
.p-8 { padding: 32px; }
.p-12 { padding: 48px; }

.py-2 { padding-top: 8px; padding-bottom: 8px; }
.py-4 { padding-top: 16px; padding-bottom: 16px; }
.py-6 { padding-top: 24px; padding-bottom: 24px; }
.py-8 { padding-top: 32px; padding-bottom: 32px; }

.px-4 { padding-left: 16px; padding-right: 16px; }

.mt-2 { margin-top: 8px; }
.mt-4 { margin-top: 16px; }
.mt-6 { margin-top: 24px; }
.mt-8 { margin-top: 32px; }

.mb-1 { margin-bottom: 4px; }
.mb-2 { margin-bottom: 8px; }
.mb-3 { margin-bottom: 12px; }
.mb-4 { margin-bottom: 16px; }
.mb-6 { margin-bottom: 24px; }

.ml-2 { margin-left: 8px; }
.mr-1 { margin-right: 4px; }
.mr-2 { margin-right: 8px; }

.space-y-2 > * + * { margin-top: 8px; }
.space-y-6 > * + * { margin-top: 24px; }

/* ============================================
   6. 字体排版
   ============================================ */
.text-xs { font-size: 14px; }
.text-sm { font-size: 16px; }
.text-base { font-size: 18px; }
.text-lg { font-size: 20px; }
.text-xl { font-size: 24px; }
.text-2xl { font-size: 28px; }
.text-3xl { font-size: 36px; }
.text-4xl { font-size: 44px; }

.font-medium { font-weight: 500; }
.font-bold { font-weight: 700; }
.leading-relaxed { line-height: 1.625; }

/* ============================================
   7. 颜色工具类
   ============================================ */
.text-primary { color: var(--primary); }
.text-gray-500 { color: var(--gray-500); }
.text-gray-600 { color: var(--gray-600); }
.text-gray-700 { color: var(--gray-700); }
.text-green-600 { color: #16A34A; }
.text-white { color: var(--white); }
.text-white-80 { color: rgba(255, 255, 255, 0.8); }

.bg-white { background-color: var(--white); }
.bg-gray-50 { background-color: var(--gray-50); }
.bg-gray-100 { background-color: var(--gray-100); }
.bg-primary { background-color: var(--primary); }
.bg-footer { background-color: var(--footer); }

/* ============================================
   8. 边框与圆角
   ============================================ */
.border-b { border-bottom: 1px solid var(--gray-200); }
.border-t { border-top: 1px solid var(--gray-200); }
.border { border: 1px solid var(--gray-200); }

.rounded { border-radius: 4px; }
.rounded-lg { border-radius: 8px; }
.rounded-xl { border-radius: 12px; }
.rounded-full { border-radius: 9999px; }
.rounded-l-xl { border-top-left-radius: 12px; border-bottom-left-radius: 12px; }
.rounded-t-xl { border-top-left-radius: 12px; border-top-right-radius: 12px; }

/* ============================================
   9. 阴影与效果
   ============================================ */
.shadow-sm { box-shadow: var(--shadow-sm); }
.shadow-md { box-shadow: var(--shadow-md); }
.shadow-lg { box-shadow: var(--shadow-lg); }
.shadow-xl { box-shadow: var(--shadow-xl); }

/* 卡片悬停效果 */
.card-hover {
  transition: transform var(--transition-normal), box-shadow var(--transition-normal);
  will-change: transform;
}

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

body.dark-mode .card-hover:hover {
  box-shadow: var(--shadow-dark);
}

/* 按钮样式 */
.btn-icon {
  padding: 8px;
  border-radius: 9999px;
  border: none;
  background: transparent;
  cursor: pointer;
  transition: background-color var(--transition-fast);
}

.btn-icon:hover {
  background-color: var(--gray-100);
}

/* ============================================
   10. 组件样式
   ============================================ */

/* 10.1 主题切换按钮 */
.theme-toggle-btn {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  border: none;
  background: transparent;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all 0.3s ease;
  position: relative;
  overflow: hidden;
}

.theme-toggle-btn:hover {
  background-color: var(--gray-100);
  transform: scale(1.05);
}

body.dark-mode .theme-toggle-btn:hover {
  background-color: rgba(255, 255, 255, 0.1);
}

.theme-icon-wrapper {
  position: relative;
  width: 22px;
  height: 22px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.theme-icon {
  position: absolute;
  width: 22px;
  height: 22px;
  transition: all 0.5s cubic-bezier(0.4, 0, 0.2, 1);
}

.theme-icon-moon {
  fill: none;
  stroke: var(--primary);
  stroke-width: 2;
  stroke-linecap: round;
  stroke-linejoin: round;
  opacity: 1;
  transform: rotate(0deg) scale(1);
}

.theme-icon-sun {
  fill: none;
  stroke: #F59E0B;
  stroke-width: 2;
  stroke-linecap: round;
  stroke-linejoin: round;
  opacity: 0;
  transform: rotate(-90deg) scale(0.5);
}

body.dark-mode .theme-icon-moon {
  opacity: 0;
  transform: rotate(90deg) scale(0.5);
}

body.dark-mode .theme-icon-sun {
  opacity: 1;
  transform: rotate(0deg) scale(1);
}

/* 10.2 头部区域 */
.header {
  background-color: var(--white);
  border-bottom: 1px solid var(--gray-200);
  padding: 16px 0;
}

.logo-img {
  width: 48px;
  height: 48px;
  border-radius: 9999px;
}

.header-info {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-wrap: wrap;
}

/* 10.3 导航栏 - 优化字体大小 */
.nav {
  background-color: var(--primary);
  color: var(--white);
  position: sticky;
  top: 0;
  z-index: 50;
  box-shadow: var(--shadow-md);
  padding: 12px 0;
  transition: transform 0.4s cubic-bezier(0.4, 0, 0.2, 1), 
              background-color var(--transition-normal),
              padding var(--transition-normal);
  max-width: 1200px;
  margin: 0 auto;
  border-radius: 0 0 12px 12px;
}

.nav.hidden {
  transform: translateY(-100%);
}

.nav.visible {
  transform: translateY(0);
}

.nav.scrolled {
  background-color: rgba(213, 64, 83, 0.95);
  padding: 8px 0;
}

.nav-links {
  display: flex;
  justify-content: normal;
  align-items: center;
  width: 100%;
}

.nav-link {
  color: var(--white);
  text-decoration: none;
  font-weight: 500;
  font-size: 28px;
  transition: opacity var(--transition-fast);
  flex: 1;
  text-align: center;
  padding: 0 10px;
}

.nav-link:hover {
  opacity: 0.8;
}

.nav-link.active {
  opacity: 1;
  border-bottom: 2px solid white;
}

.nav-safety {
  font-size: 14px;
  text-align: center;
  margin-top: 8px;
}

/* 移动端汉堡菜单 */
.mobile-menu-btn {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  padding: 8px;
}

.mobile-menu-btn span {
  display: block;
  width: 24px;
  height: 2px;
  background-color: var(--white);
  margin: 5px 0;
  transition: all 0.3s ease;
}

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

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

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

/* 10.4 移动端底部悬浮导航栏 */
.mobile-bottom-nav {
  display: none;
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  background-color: var(--white);
  box-shadow: 0 -4px 20px rgba(0, 0, 0, 0.1);
  z-index: 1000;
  padding: 8px 0 calc(8px + env(safe-area-inset-bottom));
  border-top: 1px solid var(--gray-200);
}

.mobile-bottom-nav-list {
  display: flex;
  justify-content: space-around;
  align-items: center;
  list-style: none;
  margin: 0;
  padding: 0;
}

.mobile-bottom-nav-item {
  flex: 1;
  text-align: center;
}

.mobile-bottom-nav-link {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 4px 8px;
  text-decoration: none;
  color: var(--gray-500);
  transition: all 0.2s ease;
  border-radius: 8px;
  margin: 0 4px;
}

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

.mobile-bottom-nav-icon {
  width: 24px;
  height: 24px;
  margin-bottom: 2px;
  transition: transform 0.2s ease;
}

.mobile-bottom-nav-link:hover .mobile-bottom-nav-icon,
.mobile-bottom-nav-link.active .mobile-bottom-nav-icon {
  transform: scale(1.1);
}

.mobile-bottom-nav-text {
  font-size: 11px;
  font-weight: 500;
  line-height: 1.2;
}

/* 10.5 主体布局 */
.main-layout {
  display: flex;
  flex-direction: column;
  gap: 24px;
  padding: 24px 0;
}

@media (min-width: 1024px) {
  .main-layout {
    flex-direction: row;
  }
  
  .main-content {
    width: 75%;
  }
  
  .sidebar {
    width: 25%;
  }
}

/* 10.6 区块标题 */
.section-title {
  color: var(--primary);
  font-weight: 700;
  font-size: 18px;
  margin-bottom: 12px;
  display: flex;
  align-items: center;
}

.section-title::before {
  content: '';
  width: 4px;
  height: 24px;
  background-color: var(--primary);
  margin-right: 8px;
}

/* 10.7 数据表格 */
.data-table {
  width: 100%;
  font-size: 16px;
  border-collapse: collapse;
}

.data-table th,
.data-table td {
  padding: 8px;
  border-bottom: 1px solid var(--gray-200);
}

.data-table th {
  background-color: var(--gray-50);
  text-align: center;
  font-weight: 500;
}

.data-table th:first-child,
.data-table td:first-child {
  text-align: left;
}

.data-table td {
  text-align: center;
}

.data-table tbody tr {
  transition: background-color var(--transition-fast);
}

.data-table tbody tr:hover {
  background-color: var(--gray-50);
}

.data-table th:last-child,
.data-table td:last-child {
  text-align: center;
  vertical-align: middle;
}

/* 10.8 合作伙伴网格 */
.partner-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 12px;
}

@media (min-width: 768px) {
  .partner-grid {
    grid-template-columns: repeat(4, 1fr);
  }
}

@media (min-width: 1024px) {
  .partner-grid {
    grid-template-columns: repeat(6, 1fr);
  }
}

.partner-item {
  padding: 8px;
  text-align: center;
  border: 1px solid var(--gray-200);
  border-radius: 4px;
  font-size: 14px;
  color: var(--gray-700);
  transition: background-color var(--transition-fast);
  cursor: default;
}

.partner-item:hover {
  background-color: var(--gray-50);
}

/* 10.9 侧边栏 */
.sidebar {
  position: sticky;
  top: 80px;
  height: fit-content;
  display: flex;
  flex-direction: column;
  gap: 24px;
}

.sidebar-card {
  background-color: var(--white);
  border-radius: 12px;
  padding: 20px;
  box-shadow: var(--shadow-sm);
  text-align: center;
}

.sidebar-title {
  color: #16A34A;
  font-weight: 700;
  font-size: 18px;
  margin-bottom: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
}

.qr-wrapper {
  background-color: var(--gray-100);
  padding: 12px;
  display: inline-block;
  border-radius: 8px;
}

.qr-wrapper-large {
  background-color: var(--gray-100);
  padding: 24px;
  border-radius: 16px;
  display: inline-block;
  box-shadow: var(--shadow-md);
  border: 3px solid var(--gray-200);
  transition: transform var(--transition-normal);
}

.qr-wrapper-large:hover {
  transform: scale(1.05);
}

.qr-img {
  width: 150px;
  height: 150px;
  object-fit: cover;
}

.qr-img-large {
  width: 260px;
  height: 260px;
  object-fit: cover;
  display: block;
}

.qr-label {
  margin-top: 16px;
  font-size: 20px;
  color: var(--gray-600);
  font-weight: 600;
}

.qr-desc {
  font-size: 14px;
  color: var(--gray-500);
  margin-top: 8px;
  line-height: 1.5;
}

body.dark-mode .qr-desc {
  color: var(--dark-text-tertiary);
}

/* 10.10 手风琴折叠面板 */
.accordion-title {
  color: var(--primary);
  font-weight: 700;
  font-size: 16px;
  margin-bottom: 12px;
  text-align: left;
}

.accordion-item {
  border-bottom: 1px solid var(--gray-100);
  padding-bottom: 4px;
}

.accordion-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 12px;
  color: var(--gray-700);
  cursor: pointer;
  padding: 4px 0;
  transition: color var(--transition-fast);
}

.accordion-header:hover {
  color: var(--primary);
}

.accordion-header-content {
  display: flex;
  align-items: center;
  gap: 4px;
}

.accordion-dot {
  width: 6px;
  height: 6px;
  background-color: var(--primary);
  border-radius: 9999px;
  flex-shrink: 0;
}

.accordion-arrow {
  width: 8px;
  height: 8px;
  border-right: 2px solid var(--primary);
  border-bottom: 2px solid var(--primary);
  transform: rotate(45deg);
  transition: transform var(--transition-normal);
  flex-shrink: 0;
}

.accordion-item.expanded .accordion-arrow {
  transform: rotate(-135deg);
}

.accordion-content {
  max-height: 0;
  overflow: hidden;
  transition: max-height var(--transition-normal), padding var(--transition-normal);
  font-size: 12px;
  color: var(--gray-600);
  padding-left: 10px;
  text-align: left;
  line-height: 1.6;
}

.accordion-item.expanded .accordion-content {
  max-height: 300px;
  padding-top: 8px;
  padding-bottom: 8px;
}

/* 10.11 页脚 */
.footer {
  background-color: var(--footer);
  padding: 24px 0;
  margin-top: 32px;
  border-top: 1px solid var(--gray-200);
}

.footer-text {
  text-align: center;
  font-size: 14px;
  color: var(--gray-600);
}

.footer-text p + p {
  margin-top: 8px;
}

body.dark-mode .footer-text {
  color: var(--dark-text-tertiary);
}

/* 10.12 返回顶部按钮 - 带进度环 */
.back-to-top {
  position: fixed;
  bottom: 30px;
  right: 30px;
  width: 56px;
  height: 56px;
  background-color: transparent;
  color: var(--primary);
  border: none;
  border-radius: 50%;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.3s ease, visibility 0.3s ease, box-shadow 0.3s ease, background-color 0.3s ease;
  z-index: 100;
  padding: 0;
}

/* 扩大悬停检测区域 - 防止边缘闪动 */
.back-to-top::after {
  content: '';
  position: absolute;
  top: -8px;
  left: -8px;
  right: -8px;
  bottom: -8px;
  border-radius: 50%;
  background: transparent;
  z-index: -2;
}

.back-to-top.visible {
  opacity: 1;
  visibility: visible;
}

/* 进度环容器 */
.back-to-top-progress-ring {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  transform: rotate(-90deg) scale(1);
  transition: opacity 0.4s cubic-bezier(0.4, 0, 0.2, 1), transform 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

/* 进度环背景圆 */
.back-to-top-progress-ring-bg {
  fill: none;
  stroke: rgba(213, 64, 83, 0.15);
  stroke-width: 3;
}

/* 进度环进度圆 */
.back-to-top-progress-ring-fill {
  fill: none;
  stroke: var(--primary);
  stroke-width: 3;
  stroke-linecap: round;
  transition: stroke-dashoffset 0.1s ease-out;
}

/* 进度文本 */
.back-to-top-text {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%) scale(1);
  font-size: 13px;
  font-weight: 700;
  color: var(--primary);
  transition: opacity 0.4s cubic-bezier(0.4, 0, 0.2, 1), transform 0.4s cubic-bezier(0.4, 0, 0.2, 1);
  pointer-events: none;
}

/* 向上箭头图标 */
.back-to-top-arrow {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%) scale(0.5);
  width: 24px;
  height: 24px;
  opacity: 0;
  transition: opacity 0.4s cubic-bezier(0.4, 0, 0.2, 1), transform 0.4s cubic-bezier(0.4, 0, 0.2, 1);
  pointer-events: none;
}

.back-to-top-arrow svg {
  width: 100%;
  height: 100%;
  fill: none;
  stroke: white;
  stroke-width: 2.5;
  stroke-linecap: round;
  stroke-linejoin: round;
}

/* 悬停状态 - 显示箭头，隐藏进度，添加阴影 */
.back-to-top:hover {
  box-shadow: 0 8px 20px rgba(213, 64, 83, 0.4);
  background-color: var(--primary);
}

.back-to-top:hover .back-to-top-progress-ring {
  opacity: 0;
  transform: rotate(-90deg) scale(0.8);
}

.back-to-top:hover .back-to-top-text {
  opacity: 0;
  transform: translate(-50%, -50%) scale(0.8);
}

.back-to-top:hover .back-to-top-arrow {
  opacity: 1;
  transform: translate(-50%, -50%) scale(1);
}

/* 悬停时的背景效果 */
.back-to-top::before {
  content: '';
  position: absolute;
  top: 3px;
  left: 3px;
  right: 3px;
  bottom: 3px;
  background-color: white;
  border-radius: 50%;
  transition: background-color 0.4s cubic-bezier(0.4, 0, 0.2, 1), transform 0.4s cubic-bezier(0.4, 0, 0.2, 1);
  z-index: -1;
}

.back-to-top:hover::before {
  transform: scale(0.95);
  background-color: var(--primary);
}

/* 深色模式适配 */
body.dark-mode .back-to-top-progress-ring-bg {
  stroke: rgba(213, 64, 83, 0.25);
}

body.dark-mode .back-to-top-text {
  color: var(--primary);
}

body.dark-mode .back-to-top::before {
  background-color: var(--dark-card);
}

body.dark-mode .back-to-top:hover::before {
  background-color: var(--primary);
}

/* 悬停时外圈也统一成主色调 */
.back-to-top:hover .back-to-top-progress-ring-bg {
  stroke: rgba(255, 255, 255, 0.3);
  transition: stroke 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

body.dark-mode .back-to-top:hover {
  box-shadow: 0 8px 20px rgba(213, 64, 83, 0.5);
  background-color: var(--primary);
}

body.dark-mode .back-to-top:hover .back-to-top-progress-ring-bg {
  stroke: rgba(255, 255, 255, 0.3);
}

/* 返回顶部按钮 - Tooltip提示 */
.back-to-top-tooltip {
  position: absolute;
  left: 50%;
  bottom: calc(100% + 12px);
  transform: translateX(-50%) translateY(4px);
  background-color: #333333;
  color: white;
  padding: 6px 12px;
  border-radius: 4px;
  font-size: 13px;
  font-weight: 500;
  white-space: nowrap;
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.3s ease, transform 0.3s ease, visibility 0.3s;
  pointer-events: none;
}

/* Tooltip箭头 */
.back-to-top-tooltip::after {
  content: '';
  position: absolute;
  left: 50%;
  top: 100%;
  transform: translateX(-50%);
  border-width: 4px 4px 0 4px;
  border-style: solid;
  border-color: #333333 transparent transparent transparent;
}

/* 悬停时显示tooltip */
.back-to-top:hover .back-to-top-tooltip {
  opacity: 1;
  visibility: visible;
  transform: translateX(-50%) translateY(0);
}

/* 深色模式适配 */
body.dark-mode .back-to-top-tooltip {
  background-color: #444444;
  color: var(--dark-text-primary);
}

body.dark-mode .back-to-top-tooltip::after {
  border-color: #444444 transparent transparent transparent;
}

/* 移动端隐藏tooltip */
@media (max-width: 767px) {
  .back-to-top-tooltip {
    display: none;
  }
}

/* ============================================
   11. 图标样式
   ============================================ */
.icon {
  display: inline-block;
  width: 20px;
  height: 20px;
  vertical-align: middle;
}

.icon-moon {
  fill: none;
  stroke: var(--primary);
  stroke-width: 2;
}

.icon-sun {
  fill: none;
  stroke: var(--primary);
  stroke-width: 2;
}

.icon-phone {
  fill: none;
  stroke: currentColor;
  stroke-width: 2;
  width: 32px;
  height: 32px;
}

.icon-shield {
  fill: none;
  stroke: rgba(255, 255, 255, 0.8);
  stroke-width: 2;
  width: 16px;
  height: 16px;
  vertical-align: middle;
  margin-right: 4px;
}

.icon-wx, .icon-gzh {
  width: 20px;
  height: 20px;
  object-fit: contain;
  vertical-align: middle;
}

.icon-angle-right {
  width: 12px;
  height: 12px;
  fill: var(--primary);
  flex-shrink: 0;
}

/* ============================================
   12. 动画效果
   ============================================ */
@keyframes fadeIn {
  from { opacity: 0; }
  to { opacity: 1; }
}

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

.fade-in {
  animation: fadeIn 0.8s ease-in-out;
}

.slide-up {
  animation: slideUp 0.6s ease-out;
}

/* ============================================
   13. 页面加载动画
   ============================================ */
.page-loader {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-color: var(--white);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  z-index: 9999;
  transition: opacity 0.3s ease, visibility 0.3s ease;
}

body.dark-mode .page-loader {
  background-color: var(--dark-bg);
}

.page-loader.hidden {
  opacity: 0;
  visibility: hidden;
}

.loader-spinner {
  width: 40px;
  height: 40px;
  border: 3px solid var(--gray-200);
  border-top-color: var(--primary);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}

body.dark-mode .loader-spinner {
  border-color: var(--dark-border);
  border-top-color: var(--primary);
}

.loader-text {
  margin-top: 16px;
  color: var(--gray-600);
  font-size: 14px;
}

body.dark-mode .loader-text {
  color: var(--dark-text-tertiary);
}

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

/* ============================================
   14. 工具类
   ============================================ */
.inline-block { display: inline-block; }
.align-top { vertical-align: top; }

ul.list-feature {
  list-style: none;
  text-align: left;
  margin: 0;
  padding: 0;
  display: inline-block;
}

ul.list-feature li::before {
  content: '✅ ';
}

ul.list-feature li {
  font-size: 14px;
  margin: 0;
  padding: 0;
}

/* 图片懒加载占位 */
.lazy-img {
  background: linear-gradient(90deg, #f0f0f0 25%, #e0e0e0 50%, #f0f0f0 75%);
  background-size: 200% 100%;
  animation: loading 1.5s infinite;
}

body.dark-mode .lazy-img {
  background: linear-gradient(90deg, #2A2A2A 25%, #333333 50%, #2A2A2A 75%);
  background-size: 200% 100%;
}

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

.lazy-img.loaded {
  animation: none;
  background: none;
}

/* ============================================
   15. 新版券商卡片样式（9宫格布局）
   ============================================ */
.broker-card {
  background-color: var(--white);
  border-radius: 16px;
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--gray-200);
  margin-bottom: 24px;
}

.broker-header-new {
  background: linear-gradient(135deg, var(--primary) 0%, #E85D75 100%);
  padding: 16px 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  position: relative;
  overflow: hidden;
}

.broker-header-new::before {
  content: '';
  position: absolute;
  top: -50%;
  right: -50%;
  width: 200%;
  height: 200%;
  background: radial-gradient(circle, rgba(255,255,255,0.1) 0%, transparent 60%);
  pointer-events: none;
}

.broker-header-left {
  display: flex;
  align-items: center;
  gap: 16px;
  position: relative;
  z-index: 1;
}

.broker-icon {
  width: 48px;
  height: 48px;
  background: rgba(255,255,255,0.2);
  backdrop-filter: blur(10px);
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 28px;
  flex-shrink: 0;
}

.broker-title-group h3 {
  color: white;
  font-size: 20px;
  font-weight: 700;
  margin: 0 0 4px 0;
  line-height: 1.2;
}

.broker-title-group p {
  color: rgba(255,255,255,0.9);
  font-size: 14px;
  margin: 0;
  line-height: 1.4;
}

.broker-header-tag {
  background: rgba(255,255,255,0.25);
  backdrop-filter: blur(10px);
  color: white;
  padding: 8px 16px;
  border-radius: 20px;
  font-size: 14px;
  font-weight: 600;
  position: relative;
  z-index: 1;
  border: 1px solid rgba(255,255,255,0.3);
}

.broker-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 12px;
  padding: 16px 24px;
  background-color: var(--white);
}

.broker-grid-item {
  text-align: center;
  padding: 12px 6px;
  border-radius: 12px;
  background-color: var(--gray-50);
  border: 1px solid var(--gray-200);
  transition: all 0.3s ease;
}

.broker-grid-item:hover {
  background-color: var(--white);
  box-shadow: var(--shadow-md);
  transform: translateY(-2px);
  border-color: var(--primary-light);
}

.broker-grid-item .item-label {
  font-size: 13px;
  color: var(--gray-600);
  margin-bottom: 8px;
  font-weight: 500;
}

.broker-grid-item .item-value {
  font-size: 18px;
  font-weight: 700;
  color: var(--dark);
  margin-bottom: 6px;
  line-height: 1.2;
}

.broker-grid-item .item-note {
  font-size: 12px;
  color: var(--gray-600);
  font-weight: 500;
}

.broker-grid-item .item-note .mianwu,
.broker-grid-item .item-value .mianwu {
  color: var(--primary);
  font-weight: 700;
}

.broker-tags {
  padding: 0 24px 16px;
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  background-color: var(--white);
}

.broker-tags .tag-item {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 8px 14px;
  background-color: var(--secondary);
  color: var(--primary);
  border-radius: 20px;
  font-size: 13px;
  font-weight: 500;
  border: 1px solid var(--primary-lighter);
  transition: all 0.2s ease;
}

.broker-tags .tag-item::before {
  content: "✓";
  font-weight: 700;
  font-size: 12px;
}

.broker-tags .tag-item:hover {
  background-color: var(--primary);
  color: white;
  transform: translateY(-1px);
}

.broker-footer {
  padding: 12px 24px;
  border-top: 1px solid var(--gray-200);
  display: flex;
  justify-content: flex-start;
  align-items: center;
  font-size: 14px;
  color: var(--gray-600);
  background-color: var(--gray-50);
  gap: 24px;
}

.broker-footer span {
  display: inline-block;
}

/* ============================================
   16. 响应式适配
   ============================================ */
@media (max-width: 1023px) {
  .sidebar {
    position: static;
    width: 100%;
  }
  
  .broker-header-new {
    padding: 16px 24px;
  }

  .broker-icon {
    width: 48px;
    height: 48px;
    font-size: 24px;
  }

  .broker-title-group h3 {
    font-size: 20px;
  }

  .broker-grid {
    grid-template-columns: repeat(3, 1fr);
    gap: 12px;
    padding: 16px 24px;
  }
}

@media (max-width: 767px) {
  .hidden-mobile {
    display: none !important;
  }
  
  .mobile-menu-btn {
    display: none;
  }
  
  .nav {
    display: none;
  }
  
  .mobile-bottom-nav {
    display: block;
  }
  
  .main-layout {
    padding-bottom: 80px;
  }
  
  .nav-links {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100vh;
    background-color: var(--primary);
    flex-direction: column;
    justify-content: center;
    gap: 32px;
    transform: translateX(-100%);
    transition: transform 0.3s ease;
    z-index: 100;
  }
  
  .nav-links.active {
    transform: translateX(0);
  }
  
  .nav-link {
    font-size: 24px;
    padding: 16px;
  }
  
  .header-info {
    font-size: 14px;
  }
  
  .broker-card .p-4,
  .compare-table-wrapper {
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
  }
  
  .data-table,
  .compare-table {
    min-width: 600px;
  }
  
  .back-to-top {
    bottom: 90px;
    right: 20px;
    width: 44px;
    height: 44px;
  }
  
  .partner-grid {
    grid-template-columns: repeat(3, 1fr);
  }
  
  .qr-img-large {
    width: 200px;
    height: 200px;
  }
  
  .qr-wrapper-large {
    padding: 16px;
  }
  
  .broker-header-new {
    padding: 16px 20px;
    flex-wrap: wrap;
    gap: 12px;
  }

  .broker-title-group h3 {
    font-size: 18px;
  }

  .broker-title-group p {
    font-size: 12px;
  }

  .broker-header-tag {
    font-size: 12px;
    padding: 6px 12px;
  }

  .broker-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 12px;
    padding: 16px 20px;
  }

  .broker-grid-item .item-value {
    font-size: 18px;
  }

  .broker-footer {
    flex-direction: column;
    align-items: flex-start;
    gap: 8px;
    padding: 12px 20px;
  }

  .broker-tags {
    padding: 0 20px 16px;
  }
}

/* 券商卡片折叠功能 - 深色模式适配 */
body.dark-mode .broker-toggle-btn {
  background: var(--dark-card);
  border-color: var(--dark-border);
  color: var(--primary);
}

body.dark-mode .broker-toggle-btn:hover {
  background: rgba(213, 64, 83, 0.15);
}

/* ============================================
   券商卡片移动端适配优化
   ============================================ */
@media (max-width: 767px) {
  .broker-header-new {
    padding: 12px 16px;
  }

  .broker-icon {
    width: 40px;
    height: 40px;
    font-size: 20px;
    border-radius: 8px;
  }

  .broker-title-group h3 {
    font-size: 16px;
  }

  .broker-title-group p {
    font-size: 11px;
  }

  .broker-header-tag {
    font-size: 11px;
    padding: 4px 10px;
  }

  .broker-grid {
    grid-template-columns: repeat(3, 1fr);
    gap: 6px;
    padding: 12px 16px;
  }

  .broker-grid-item {
    padding: 8px 4px;
    border-radius: 8px;
  }

  .broker-grid-item .item-label {
    font-size: 10px;
    margin-bottom: 4px;
  }

  .broker-grid-item .item-value {
    font-size: 13px;
    margin-bottom: 2px;
  }

  .broker-grid-item .item-note {
    font-size: 9px;
  }

  .broker-toggle-btn {
    padding: 10px;
    font-size: 13px;
  }

  .broker-tags {
    padding: 0 16px 12px;
    gap: 6px;
  }

  .broker-tags .tag-item {
    padding: 5px 10px;
    font-size: 11px;
    border-radius: 16px;
  }

  .broker-footer {
    padding: 10px 16px;
    font-size: 12px;
    gap: 8px;
  }
}

/* 超小屏幕适配 */
@media (max-width: 374px) {
  .broker-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 6px;
    padding: 10px 12px;
  }

  .broker-header-new {
    padding: 10px 12px;
  }

  .broker-icon {
    width: 36px;
    height: 36px;
    font-size: 18px;
  }

  .broker-title-group h3 {
    font-size: 15px;
  }
}