/* 基础样式重置 */
    * {
      margin: 0;
      padding: 0;
      box-sizing: border-box;
      font-family: 'Microsoft YaHei', 'Heiti SC', Arial, sans-serif;
    }
    
    body {
      background-color: #f8f9fa;
      color: #333;
      line-height: 1.6;
    }
    
    a {
      text-decoration: none;
      color: inherit;
    }
    
    ul {
      list-style: none;
    }
    
    .container {
      width: 100%;
      max-width: 1200px;
      margin: 0 auto;
      padding: 0 15px;
    }
    
    button {
      border: none;
      background: none;
      cursor: pointer;
    }
    
    /* 自定义图标样式（替代Font Awesome） */
    .icon {
      display: inline-block;
      width: 24px;
      height: 24px;
      position: relative;
      vertical-align: middle;
    }
    
    .icon-android::before {
      content: "🤖";
      font-size: 24px;
    }
    
    .icon-apple::before {
      content: "🍎";
      font-size: 24px;
    }
    
    .icon-tasks::before {
      content: "📋";
      font-size: 24px;
    }
    
    .icon-money::before {
      content: "💰";
      font-size: 24px;
    }
    
    .icon-bolt::before {
      content: "⚡";
      font-size: 24px;
    }
    
    .icon-chevron-down::before {
      content: "▼";
      font-size: 16px;
    }
    
    .icon-chevron-up::before {
      content: "▲";
      font-size: 16px;
    }
    
    .icon-bars::before {
      content: "☰";
      font-size: 24px;
    }
    
    /* 组件样式 */
    .btn {
      display: inline-block;
      padding: 10px 20px;
      border-radius: 30px;
      font-weight: 600;
      transition: all 0.2s ease;
      text-align: center;
    }
    
    .btn-primary {
      background-color: #e61e2b;
      color: white;
    }
    
    .btn-primary:hover {
      background-color: #c41421;
    }
    
    .btn-white {
      background-color: white;
      color: #e61e2b;
    }
    
    .btn-white:hover {
      background-color: #f8f8f8;
      box-shadow: 0 2px 8px rgba(0,0,0,0.1);
    }
    
    .card {
      background-color: white;
      border-radius: 20px;
      padding: 25px;
      box-shadow: 0 2px 10px rgba(0,0,0,0.05);
      transition: all 0.3s ease;
    }
    
    .card:hover {
      box-shadow: 0 5px 15px rgba(0,0,0,0.1);
      transform: translateY(-3px);
    }
    
    .img-container {
      position: relative;
      overflow: hidden;
    }
    
    .fixed-ratio-img {
      position: absolute;
      top: 0;
      left: 0;
      width: 100%;
      height: 100%;
      object-fit: cover;
    }
    
    /* 导航栏样式 */
    .navbar {
      position: fixed;
      top: 0;
      left: 0;
      width: 100%;
      background-color: rgba(255,255,255,0.95);
      backdrop-filter: blur(5px);
      box-shadow: 0 2px 5px rgba(0,0,0,0.05);
      z-index: 50;
      padding: 12px 0;
    }
    
    .navbar-container {
      display: flex;
      justify-content: space-between;
      align-items: center;
    }
    
    .logo {
      display: flex;
      align-items: center;
      gap: 10px;
    }
    
    .logo-icon {
      width: 40px;
      height: 40px;
      border-radius: 10px;
      background-color: #e61e2b;
    }
    
    .logo-text {
      font-size: 22px;
      font-weight: bold;
      color: #e61e2b;
    }
    
    .nav-menu {
      display: flex;
      gap: 30px;
      align-items: center;
    }
    
    .nav-link {
      color: #666;
      font-size: 15px;
      transition: color 0.2s ease;
    }
    
    .nav-link:hover {
      color: #e61e2b;
    }
    
    .mobile-menu-btn {
      display: none;
      color: #666;
      font-size: 20px;
    }
    
    .mobile-menu {
      display: none;
      background-color: white;
      position: absolute;
      top: 100%;
      left: 0;
      width: 100%;
      box-shadow: 0 5px 5px rgba(0,0,0,0.05);
      padding: 15px 0;
    }
    
    .mobile-menu.active {
      display: block;
    }
    
    .mobile-menu-list {
      display: flex;
      flex-direction: column;
      gap: 15px;
      padding: 0 15px;
    }
    
    .mobile-menu-link {
      color: #666;
      padding: 8px 0;
      border-bottom: 1px solid #f0f0f0;
    }
    
    .mobile-menu-link:last-child {
      border-bottom: none;
    }
    
    /* 英雄区域样式 */
    .hero {
      background: linear-gradient(135deg, #e61e2b, #f04852);
      color: white;
      padding: 100px 0 60px;
      margin-top: 64px;
    }
    
    .hero-container {
      display: flex;
      flex-direction: column;
      align-items: center;
    }
    
    .hero-content {
      text-align: center;
      margin-bottom: 40px;
      max-width: 600px;
    }
    
    .hero-title {
      font-size: 32px;
      font-weight: bold;
      margin-bottom: 15px;
      line-height: 1.3;
    }
    
    .hero-desc {
      font-size: 16px;
      opacity: 0.9;
      margin-bottom: 30px;
    }
    
    .download-buttons {
      display: flex;
      justify-content: center;
      gap: 15px;
      margin-bottom: 30px;
      flex-wrap: wrap;
    }
    
    .download-btn {
      display: flex;
      align-items: center;
      gap: 8px;
      padding: 12px 20px;
      border-radius: 12px;
      font-weight: 600;
    }
    
    .download-btn-icon {
      font-size: 22px;
    }
    
    .download-btn-text {
      text-align: left;
    }
    
    .download-btn-text small {
      font-size: 12px;
      opacity: 0.9;
    }
    
    .download-qr {
      display: flex;
      align-items: center;
      gap: 15px;
      justify-content: center;
      margin-bottom: 40px;
    }
    
    .qr-code {
      width: 120px;
      height: 120px;
      background-color: white;
      padding: 5px;
      border-radius: 10px;
    }
    
    .qr-text {
      text-align: left;
    }
    
    .qr-text-title {
      font-weight: 600;
      margin-bottom: 5px;
    }
    
    .qr-text-desc {
      font-size: 14px;
      opacity: 0.9;
    }
    
    .app-showcase {
      width: 280px;
      height: 550px;
      border-radius: 50px;
      background-color: #333;
      border: 8px solid #1a1a1a;
      overflow: hidden;
      position: relative;
    }
    
    .earn-tag {
      position: absolute;
      bottom: -20px;
      right: -20px;
      width: 80px;
      height: 80px;
      border-radius: 50%;
      background-color: #ffc107;
      color: #1a1a1a;
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: bold;
      font-size: 18px;
      box-shadow: 0 3px 10px rgba(0,0,0,0.2);
      animation: pulse 2s infinite;
    }
    
    @keyframes pulse {
      0%, 100% { transform: scale(1); }
      50% { transform: scale(1.05); }
    }
    
    /* 功能区域样式 */
    .features {
      padding: 80px 0;
      background-color: #f8f9fa;
    }
    
    .section-title {
      font-size: 28px;
      font-weight: bold;
      text-align: center;
      margin-bottom: 50px;
      color: #333;
    }
    
    .features-grid {
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
      gap: 25px;
    }
    
    .feature-icon {
      width: 56px;
      height: 56px;
      border-radius: 50%;
      background-color: rgba(230, 30, 43, 0.1);
      display: flex;
      align-items: center;
      justify-content: center;
      margin-bottom: 15px;
      color: #e61e2b;
    }
    
    .feature-title {
      font-size: 18px;
      font-weight: 600;
      margin-bottom: 10px;
      color: #333;
    }
    
    .feature-desc {
      color: #666;
      font-size: 14px;
    }
    
    /* 截图展示区域样式 */
    .screenshots {
      padding: 80px 0;
      background-color: white;
    }
    
    .screenshots-grid {
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
      gap: 20px;
      max-width: 800px;
      margin: 0 auto;
    }
    
    .screenshot-item {
      border-radius: 15px;
      overflow: hidden;
      background-color: #f0f0f0;
      aspect-ratio: 9/16;
    }
    
    /* 数据统计区域样式 */
    .stats {
      padding: 80px 0;
      background-color: rgba(230, 30, 43, 0.05);
    }
    
    .stats-grid {
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
      gap: 20px;
      max-width: 800px;
      margin: 0 auto;
    }
    
    .stat-card {
      text-align: center;
      padding: 20px;
    }
    
    .stat-value {
      font-size: 28px;
      font-weight: bold;
      color: #e61e2b;
      margin-bottom: 5px;
    }
    
    .stat-label {
      font-size: 14px;
      color: #666;
    }
    
    /* FAQ区域样式 */
    .faq {
      padding: 80px 0;
      background-color: white;
    }
    
    .faq-container {
      max-width: 700px;
      margin: 0 auto;
    }
    
    .faq-item {
      border: 1px solid #f0f0f0;
      border-radius: 15px;
      margin-bottom: 10px;
      overflow: hidden;
    }
    
    .faq-question {
      width: 100%;
      padding: 18px 20px;
      display: flex;
      justify-content: space-between;
      align-items: center;
      background-color: white;
      font-weight: 600;
      color: #333;
      text-align: left;
    }
    
    .faq-icon {
      color: #999;
      transition: transform 0.2s ease;
    }
    
    .faq-icon.active {
      transform: rotate(180deg);
    }
    
    .faq-answer {
      padding: 0 20px;
      max-height: 0;
      overflow: hidden;
      transition: max-height 0.3s ease, padding 0.3s ease;
      color: #666;
      font-size: 14px;
    }
    
    .faq-answer.active {
      padding: 0 20px 20px;
      max-height: 200px;
    }
    
    /* 底部下载区域样式 */
    .bottom-download {
      background-color: #e61e2b;
      color: white;
      padding: 60px 0;
      text-align: center;
    }
    
    .bottom-download-title {
      font-size: 24px;
      font-weight: bold;
      margin-bottom: 15px;
    }
    
    .bottom-download-desc {
      max-width: 500px;
      margin: 0 auto 30px;
      opacity: 0.9;
    }
    
    /* 页脚样式 */
    .footer {
      background-color: #1a1a1a;
      color: rgba(255,255,255,0.7);
      padding: 30px 0;
      text-align: center;
      font-size: 14px;
    }
    
    .footer-copyright {
      margin-bottom: 8px;
    }
    
    /* 回到顶部按钮样式 */
    .back-to-top {
      position: fixed;
      bottom: 20px;
      right: 20px;
      width: 45px;
      height: 45px;
      border-radius: 50%;
      background-color: #e61e2b;
      color: white;
      display: flex;
      align-items: center;
      justify-content: center;
      box-shadow: 0 3px 10px rgba(0,0,0,0.2);
      opacity: 0;
      visibility: hidden;
      transition: opacity 0.3s ease, visibility 0.3s ease;
      z-index: 40;
    }
    
    .back-to-top.active {
      opacity: 1;
      visibility: visible;
    }
    
    /* 响应式样式 */
    @media (max-width: 768px) {
      .nav-menu {
        display: none;
      }
      
      .mobile-menu-btn {
        display: block;
      }
      
      .hero-title {
        font-size: 26px;
      }
      
      .hero-desc {
        font-size: 15px;
      }
      
      .download-buttons {
        flex-direction: column;
        align-items: center;
      }
      
      .download-btn {
        width: 220px;
        justify-content: center;
      }
      
      .app-showcase {
        width: 250px;
        height: 500px;
      }
      
      .section-title {
        font-size: 24px;
      }
      
      .features-grid {
        gap: 15px;
      }
      
      .screenshots-grid {
        grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
      }
    }
    
    @media (max-width: 480px) {
      .logo-text {
        font-size: 18px;
      }
      
      .hero {
        padding-top: 80px;
      }
      
      .hero-title {
        font-size: 22px;
      }
      
      .download-qr {
        flex-direction: column;
        text-align: center;
      }
      
      .qr-text {
        text-align: center;
      }
      
      .app-showcase {
        width: 220px;
        height: 450px;
      }
      
      .earn-tag {
        width: 60px;
        height: 60px;
        font-size: 14px;
        bottom: -15px;
        right: -15px;
      }
    }