:root {
      --primary-color: #000000;
      --secondary-color: #030b0c;
      --dark-bg: #1e293b;
      --light-bg: #f8fafc;
    }
    
    body {
      font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    }
    
    .navbar {
      background: linear-gradient(135deg, var(--dark-bg) 0%, #334155 100%) !important;
      padding: 1rem 0;
    }
    
    .navbar-brand {
      font-size: 1.5rem;
      letter-spacing: 1px;
    }
    
    .hero-section {
      background: linear-gradient(135deg, var(--primary-color) 0%, var(--secondary-color) 100%);
      color: white;
      padding: 5rem 0;
      position: relative;
      overflow: hidden;
    }
    
    .hero-section::before {
      content: '';
      position: absolute;
      top: 0;
      left: 0;
      right: 0;
      bottom: 0;
      background: url('data:image/svg+xml,<svg width="100" height="100" xmlns="http://www.w3.org/2000/svg"><text x="10" y="50" font-size="40" opacity="0.1" fill="white">NLP</text></svg>');
      opacity: 0.1;
    }
    
    .hero-content {
      position: relative;
      z-index: 1;
    }
    
    .feature-card {
      transition: transform 0.3s ease, box-shadow 0.3s ease;
      border: none;
      border-radius: 12px;
      overflow: hidden;
    }
    
    .feature-card:hover {
      transform: translateY(-10px);
      box-shadow: 0 20px 40px rgba(0,0,0,0.1);
    }
    
    .feature-icon {
      width: 80px;
      height: 80px;
      background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
      border-radius: 50%;
      display: flex;
      align-items: center;
      justify-content: center;
      margin: 0 auto 1.5rem;
      font-size: 2rem;
      color: white;
    }
    
    .stats-section {
      background: var(--light-bg);
      padding: 3rem 0;
    }
    
    .stat-box {
      text-align: center;
      padding: 2rem;
    }
    
    .stat-number {
      font-size: 3rem;
      font-weight: bold;
      color: var(--primary-color);
    }
    
    .cta-section {
      background: linear-gradient(135deg, #1e293b 0%, #334155 100%);
      color: white;
      padding: 4rem 0;
    }
    
    .btn-custom {
      background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
      border: none;
      padding: 12px 30px;
      border-radius: 25px;
      color: white;
      font-weight: 600;
      transition: transform 0.3s ease;
    }
    
    .btn-custom:hover {
      transform: scale(1.05);
      color: white;
    }
    
    .section-title {
      font-size: 2.5rem;
      font-weight: 700;
      margin-bottom: 1rem;
      position: relative;
      display: inline-block;
    }
    
    .section-title::after {
      content: '';
      position: absolute;
      bottom: -10px;
      left: 0;
      width: 60px;
      height: 4px;
      background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    }