* {
      margin: 0;
      padding: 0;
      box-sizing: border-box;
    }
    
    body {
      font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
      line-height: 1.6;
      color: #333;
    }
    
    .container {
      max-width: 1200px;
      margin: 0 auto;
      padding: 0 20px;
    }
    
    /* Header */
    header {
      background: white;
      box-shadow: 0 2px 10px rgba(0,0,0,0.1);
      position: sticky;
      top: 0;
      z-index: 1000;
    }
    
    nav {
      display: flex;
      justify-content: space-between;
      align-items: center;
      padding: 20px 0;
    }
    
    .logo {
      font-size: 28px;
      font-weight: bold;
      background: linear-gradient(135deg, #169B7E 0%, #0D7A63 100%);
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
      letter-spacing: 2px;
    }
    
    .nav-links {
      display: flex;
      gap: 40px;
      list-style: none;
      align-items: center;
    }
    
    .nav-links a {
      text-decoration: none;
      color: #666;
      font-weight: 500;
      transition: color 0.3s;
    }
    
    .nav-links a:hover {
      color: #169B7E;
    }
    
    .cta-button {
      background: linear-gradient(135deg, #169B7E 0%, #0D7A63 100%);
      color: white;
      padding: 12px 30px;
      border-radius: 25px;
      text-decoration: none;
      font-weight: 600;
      transition: transform 0.3s, box-shadow 0.3s;
    }
    
    .cta-button:hover {
      transform: translateY(-2px);
      box-shadow: 0 10px 20px rgba(22, 155, 126, 0.3);
    }

.nav-actions {
  display: flex;
  align-items: center;
  gap: 12px;
}

.nav-actions a {
  border: 1px solid rgba(22, 155, 126, 0.3);
  background: transparent;
  color: #169B7E;
  padding: 10px 18px;
  border-radius: 25px;
  font-weight: 600;
  cursor: pointer;
  text-decoration: none;
}
    
    /* Hero Section */
    .hero {
      background: linear-gradient(135deg, #169B7E 0%, #0D7A63 100%);
      color: white;
      padding: 100px 0;
      text-align: center;
    }
    
    .hero h1 {
      font-size: 48px;
      margin-bottom: 20px;
      font-weight: 700;
    }
    
    .hero .subtitle {
      font-size: 24px;
      margin-bottom: 15px;
      opacity: 0.95;
    }
    
    .hero p {
      font-size: 18px;
      margin-bottom: 40px;
      opacity: 0.9;
      max-width: 800px;
      margin-left: auto;
      margin-right: auto;
    }
    
    .hero-buttons {
      display: flex;
      gap: 20px;
      justify-content: center;
      flex-wrap: wrap;
    }
    
    .primary-btn {
      background: white;
      color: #169B7E;
      padding: 18px 50px;
      border-radius: 30px;
      text-decoration: none;
      font-weight: 600;
      font-size: 18px;
      display: inline-block;
      transition: all 0.3s;
    }
    
    .primary-btn:hover {
      transform: translateY(-3px);
      box-shadow: 0 15px 30px rgba(0,0,0,0.2);
    }
    
    .secondary-btn {
      background: rgba(255,255,255,0.2);
      color: white;
      padding: 18px 50px;
      border-radius: 30px;
      text-decoration: none;
      font-weight: 600;
      font-size: 18px;
      display: inline-block;
      transition: all 0.3s;
      border: 2px solid white;
    }
    
    .secondary-btn:hover {
      background: white;
      color: #169B7E;
    }
    
    .hero-tags {
      margin-top: 40px;
      display: flex;
      gap: 15px;
      justify-content: center;
      flex-wrap: wrap;
    }
    
    .hero-tag {
      background: rgba(255,255,255,0.2);
      padding: 10px 25px;
      border-radius: 25px;
      font-size: 15px;
    }
    
    /* Stats Section */
    .stats {
      background: white;
      padding: 60px 0;
      box-shadow: 0 -5px 20px rgba(0,0,0,0.05);
    }
    
    .stats-grid {
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
      gap: 40px;
      text-align: center;
    }
    
    .stat-item h3 {
      font-size: 48px;
      background: linear-gradient(135deg, #169B7E 0%, #0D7A63 100%);
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
      margin-bottom: 10px;
      font-weight: bold;
    }
    
    .stat-item p {
      color: #666;
      font-size: 16px;
    }
    
    /* Pain Points Section */
    .pain-points {
      padding: 80px 0;
      background: #f8f9fa;
    }
    
    .section-title {
      text-align: center;
      font-size: 36px;
      margin-bottom: 20px;
      color: #333;
    }
    
    .section-subtitle {
      text-align: center;
      font-size: 18px;
      color: #666;
      margin-bottom: 60px;
    }
    
    .pain-grid {
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
      gap: 30px;
    }
    
    .pain-card {
      background: white;
      padding: 35px;
      border-radius: 15px;
      box-shadow: 0 5px 15px rgba(0,0,0,0.08);
      border-left: 4px solid #e74c3c;
    }
    
    .pain-icon {
      font-size: 48px;
      margin-bottom: 20px;
    }
    
    .pain-card h3 {
      font-size: 22px;
      margin-bottom: 15px;
      color: #333;
    }
    
    .pain-card p {
      color: #666;
      line-height: 1.8;
    }
    
    /* AI Tools Section */
    .ai-tools {
      padding: 80px 0;
    }
    
    .tools-grid {
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
      gap: 30px;
      margin-top: 60px;
    }
    
    .tool-card {
      background: white;
      padding: 40px;
      border-radius: 15px;
      box-shadow: 0 5px 20px rgba(0,0,0,0.1);
      transition: all 0.3s;
      border: 2px solid transparent;
    }
    
    .tool-card:hover {
      transform: translateY(-10px);
      box-shadow: 0 15px 40px rgba(22, 155, 126, 0.2);
      border-color: #169B7E;
    }
    
    .tool-icon {
      width: 80px;
      height: 80px;
      background: linear-gradient(135deg, #169B7E 0%, #0D7A63 100%);
      border-radius: 20px;
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 40px;
      margin-bottom: 25px;
      box-shadow: 0 10px 30px rgba(22, 155, 126, 0.3);
    }
    
    .tool-card h3 {
      font-size: 24px;
      margin-bottom: 15px;
      color: #333;
    }
    
    .tool-card p {
      color: #666;
      line-height: 1.8;
      margin-bottom: 20px;
    }
    
    .tool-benefits {
      list-style: none;
      padding: 0;
    }
    
    .tool-benefits li {
      padding: 8px 0;
      color: #555;
      display: flex;
      align-items: center;
      gap: 10px;
    }
    
    .tool-benefits li:before {
      content: "✓";
      color: #169B7E;
      font-weight: bold;
      font-size: 18px;
    }
    
    /* Benefits Section */
    .benefits {
      padding: 80px 0;
      background: #f8f9fa;
    }
    
    .benefits-grid {
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
      gap: 30px;
      margin-top: 60px;
    }
    
    .benefit-card {
      background: white;
      padding: 35px;
      border-radius: 15px;
      box-shadow: 0 5px 15px rgba(0,0,0,0.08);
      text-align: center;
      border-top: 4px solid #169B7E;
    }
    
    .benefit-icon {
      font-size: 56px;
      margin-bottom: 20px;
    }
    
    .benefit-card h3 {
      font-size: 22px;
      margin-bottom: 15px;
      color: #333;
    }
    
    .benefit-card p {
      color: #666;
      line-height: 1.8;
    }
    
    .benefit-card .highlight {
      color: #169B7E;
      font-weight: bold;
      font-size: 20px;
      display: block;
      margin-top: 10px;
    }
    
    /* How it works */
    .how-it-works {
      padding: 80px 0;
    }
    
    .steps-grid {
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
      gap: 40px;
      margin-top: 60px;
    }
    
    .step-card {
      text-align: center;
      position: relative;
    }
    
    .step-number {
      display: inline-block;
      width: 80px;
      height: 80px;
      background: linear-gradient(135deg, #169B7E 0%, #0D7A63 100%);
      color: white;
      border-radius: 50%;
      line-height: 80px;
      font-size: 32px;
      font-weight: bold;
      margin-bottom: 25px;
      box-shadow: 0 10px 30px rgba(22, 155, 126, 0.3);
    }
    
    .step-card h3 {
      font-size: 22px;
      margin-bottom: 15px;
      color: #333;
    }
    
    .step-card p {
      color: #666;
      line-height: 1.8;
    }
    
    /* Success Stories */
    .success-stories {
      padding: 80px 0;
      background: #f8f9fa;
    }
    
    .story-grid {
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
      gap: 30px;
      margin-top: 60px;
    }
    
    .story-card {
      background: white;
      padding: 35px;
      border-radius: 15px;
      box-shadow: 0 5px 15px rgba(0,0,0,0.08);
      border-left: 4px solid #169B7E;
    }
    
    .story-text {
      font-size: 16px;
      line-height: 1.8;
      color: #555;
      margin-bottom: 20px;
      font-style: italic;
    }
    
    .story-author {
      display: flex;
      align-items: center;
      gap: 15px;
    }
    
    .author-avatar {
      width: 60px;
      height: 60px;
      border-radius: 50%;
      background: linear-gradient(135deg, #169B7E 0%, #0D7A63 100%);
      display: flex;
      align-items: center;
      justify-content: center;
      color: white;
      font-weight: bold;
      font-size: 24px;
    }
    
    .author-info h4 {
      font-size: 18px;
      color: #333;
      margin-bottom: 3px;
    }
    
    .author-info p {
      font-size: 14px;
      color: #999;
    }
    
    .story-stats {
      margin-top: 20px;
      padding-top: 20px;
      border-top: 1px solid #eee;
      display: flex;
      justify-content: space-around;
    }
    
    .story-stat {
      text-align: center;
    }
    
    .story-stat strong {
      display: block;
      font-size: 24px;
      color: #169B7E;
      margin-bottom: 5px;
    }
    
    .story-stat span {
      font-size: 14px;
      color: #666;
    }
    
    /* Pricing Section */
    .pricing {
      padding: 80px 0;
    }
    
    .pricing-cards {
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
      gap: 40px;
      margin-top: 60px;
      max-width: 800px;
      margin-left: auto;
      margin-right: auto;
    }
    
    .pricing-card {
      background: white;
      padding: 40px;
      border-radius: 15px;
      box-shadow: 0 5px 20px rgba(0,0,0,0.1);
      text-align: center;
      border: 2px solid #eee;
      transition: all 0.3s;
    }
    
    .pricing-card.featured {
      border-color: #169B7E;
      transform: scale(1.05);
      box-shadow: 0 15px 40px rgba(22, 155, 126, 0.2);
    }
    
    .pricing-card:hover {
      transform: translateY(-10px);
    }
    
    .pricing-card.featured:hover {
      transform: translateY(-10px) scale(1.05);
    }
    
    .pricing-badge {
      background: linear-gradient(135deg, #169B7E 0%, #0D7A63 100%);
      color: white;
      padding: 5px 15px;
      border-radius: 20px;
      font-size: 12px;
      display: inline-block;
      margin-bottom: 20px;
    }
    
    .pricing-card h3 {
      font-size: 24px;
      margin-bottom: 15px;
      color: #333;
    }
    
    .pricing-price {
      font-size: 28px;
      font-weight: bold;
      color: #169B7E;
      margin-bottom: 10px;
    }
    
    .pricing-features {
      list-style: none;
      padding: 0;
      margin: 30px 0;
      text-align: left;
    }
    
    .pricing-features li {
      padding: 12px 0;
      color: #555;
      display: flex;
      align-items: center;
      gap: 10px;
    }
    
    .pricing-features li:before {
      content: "✓";
      color: #169B7E;
      font-weight: bold;
      font-size: 18px;
    }
    
    .pricing-btn {
      background: linear-gradient(135deg, #169B7E 0%, #0D7A63 100%);
      color: white;
      padding: 15px 40px;
      border-radius: 25px;
      text-decoration: none;
      font-weight: 600;
      display: inline-block;
      transition: all 0.3s;
    }
    
    .pricing-btn:hover {
      transform: translateY(-3px);
      box-shadow: 0 10px 20px rgba(22, 155, 126, 0.3);
    }
    
    /* FAQ Section */
    .faq {
      padding: 80px 0;
      background: #f8f9fa;
    }
    
    .faq-list {
      max-width: 800px;
      margin: 60px auto 0;
    }
    
    .faq-item {
      background: white;
      padding: 30px;
      border-radius: 10px;
      margin-bottom: 20px;
      box-shadow: 0 3px 10px rgba(0,0,0,0.05);
    }
    
    .faq-question {
      font-size: 20px;
      font-weight: 600;
      color: #333;
      margin-bottom: 15px;
      display: flex;
      align-items: center;
      gap: 10px;
    }
    
    .faq-question:before {
      content: "Q";
      background: linear-gradient(135deg, #169B7E 0%, #0D7A63 100%);
      color: white;
      width: 30px;
      height: 30px;
      border-radius: 50%;
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: bold;
      flex-shrink: 0;
    }
    
    .faq-answer {
      color: #666;
      line-height: 1.8;
      padding-left: 40px;
    }
    
    /* Final CTA */
    .final-cta {
      background: linear-gradient(135deg, #169B7E 0%, #0D7A63 100%);
      color: white;
      padding: 80px 0;
      text-align: center;
    }
    
    .final-cta h2 {
      font-size: 42px;
      margin-bottom: 20px;
    }
    
    .final-cta p {
      font-size: 20px;
      margin-bottom: 40px;
      opacity: 0.95;
    }
    
    .final-cta .primary-btn {
      margin: 0 10px;
    }
    
    /* Footer */
    footer {
      background: #2c3e50;
      color: white;
      padding: 40px 0;
      text-align: center;
    }
    
    .footer-links {
      display: flex;
      justify-content: center;
      gap: 40px;
      margin-bottom: 20px;
      flex-wrap: wrap;
    }
    
    .footer-links a {
      color: white;
      text-decoration: none;
      opacity: 0.8;
      transition: opacity 0.3s;
    }
    
    .footer-links a:hover {
      opacity: 1;
    }
    
    /* Responsive */
    @media (max-width: 768px) {
      .hero h1 {
        font-size: 32px;
      }
      
      .hero .subtitle {
        font-size: 18px;
      }
      
      .section-title {
        font-size: 28px;
      }
      
      .nav-links {
        display: none;
      }
      
      .hero-buttons {
        flex-direction: column;
        align-items: center;
      }
      
      .pricing-card.featured {
        transform: scale(1);
      }
      
      .pricing-card.featured:hover {
        transform: translateY(-10px) scale(1);
      }
    }