body {
      box-sizing: border-box;
    }
    
    * {
      font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    }
    
    h1, h2, h3, h4, h5, h6 {
      font-family: 'Sora', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    }
    
    .gradient-bg {
      background: linear-gradient(135deg, #0f172a 0%, #1e293b 50%, #0f172a 100%);
    }
    
    .gradient-accent {
      background: linear-gradient(135deg, #06b6d4 0%, #8b5cf6 100%);
    }
    
    .hero-gradient {
      background: linear-gradient(135deg, rgba(6, 182, 212, 0.1) 0%, rgba(139, 92, 246, 0.1) 100%);
    }
    
    .glow-card {
      transition: all 0.3s ease;
      border: 1px solid rgba(6, 182, 212, 0.2);
    }
    
    .glow-card:hover {
      transform: translateY(-8px);
      box-shadow: 0 20px 40px rgba(6, 182, 212, 0.3);
      border-color: rgba(6, 182, 212, 0.6);
    }
    
    .pulse-animation {
      animation: pulse 2s cubic-bezier(0.4, 0, 0.6, 1) infinite;
    }
    
    @keyframes pulse {
      0%, 100% {
        opacity: 1;
      }
      50% {
        opacity: 0.5;
      }
    }
    
    .neuron-bg {
      background-image: 
        radial-gradient(circle at 20% 30%, rgba(6, 182, 212, 0.15) 0%, transparent 50%),
        radial-gradient(circle at 80% 70%, rgba(139, 92, 246, 0.15) 0%, transparent 50%);
    }
    
    .btn-primary {
      background: linear-gradient(135deg, #06b6d4 0%, #0891b2 100%);
      transition: all 0.3s ease;
    }
    
    .btn-primary:hover {
      background: linear-gradient(135deg, #0891b2 0%, #06b6d4 100%);
      transform: scale(1.05);
      box-shadow: 0 10px 30px rgba(6, 182, 212, 0.4);
    }
    
    .btn-secondary {
      background: linear-gradient(135deg, #8b5cf6 0%, #7c3aed 100%);
      transition: all 0.3s ease;
    }
    
    .btn-secondary:hover {
      background: linear-gradient(135deg, #7c3aed 0%, #8b5cf6 100%);
      transform: scale(1.05);
      box-shadow: 0 10px 30px rgba(139, 92, 246, 0.4);
    }
    
    .filter-btn {
      transition: all 0.3s ease;
      border: 2px solid transparent;
    }
    
    .filter-btn:hover {
      border-color: #06b6d4;
      background: rgba(6, 182, 212, 0.1);
    }
    
    .filter-btn.active {
      background: linear-gradient(135deg, #06b6d4 0%, #0891b2 100%);
      color: white;
      border-color: #06b6d4;
    }
    
    .modal-backdrop {
      backdrop-filter: blur(8px);
      background: rgba(15, 23, 42, 0.8);
    }
    
    .modal-content {
      animation: slideUp 0.3s ease;
    }
    
    @keyframes slideUp {
      from {
        opacity: 0;
        transform: translateY(20px);
      }
      to {
        opacity: 1;
        transform: translateY(0);
      }
    }
    
    .nav-link {
      position: relative;
      transition: color 0.3s ease;
    }
    
    .nav-link::after {
      content: '';
      position: absolute;
      bottom: -4px;
      left: 0;
      width: 0%;
      height: 2px;
      background: linear-gradient(135deg, #06b6d4 0%, #8b5cf6 100%);
      transition: width 0.3s ease;
    }
    
    .nav-link:hover::after {
      width: 100%;
    }
    
    .testimonial-card {
      background: rgba(255, 255, 255, 0.05);
      backdrop-filter: blur(10px);
      border: 1px solid rgba(255, 255, 255, 0.1);
    }
    
    .program-icon {
      width: 60px;
      height: 60px;
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 32px;
      margin-bottom: 16px;
    }