:root {
      --primary: #2563eb;
      --primary-light: #3b82f6;
      --primary-dark: #1d4ed8;
      --primary-bg: #eff6ff;
      --secondary: #f8fafc;
      --accent: #f59e0b;
      --accent-dark: #d97706;
      --dark: #0f172a;
      --gray: #64748b;
      --light-gray: #e2e8f0;
      --bg-gradient: linear-gradient(120deg, #2563eb 0%, #4f46e5 100%);
      --card-bg: rgba(255, 255, 255, 0.9);
      --card-shadow: 0 8px 32px rgba(15, 23, 42, 0.08);
      --radius: 16px;
      --radius-sm: 12px;
      --radius-lg: 24px;
      --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
      --header-height: 72px;
    }
    * { 
      box-sizing: border-box;
      margin: 0;
      padding: 0;
    }
    body {
      font-family: 'Inter', system-ui, -apple-system, sans-serif;
      background: var(--secondary);
      color: var(--dark);
      line-height: 1.6;
      overflow-x: hidden;
      padding-top: var(--header-height);
      scroll-behavior: smooth;
    }
    /* Improved typography */
    h1, h2, h3, h4, h5, h6 {
      line-height: 1.2;
      font-weight: 700;
    }
    h1 {
      font-size: clamp(2.5rem, 5vw, 3.5rem);
      letter-spacing: -0.03em;
    }
    h2 {
      font-size: clamp(1.8rem, 4vw, 2.25rem);
      letter-spacing: -0.02em;
    }
    h3 {
      font-size: clamp(1.3rem, 3vw, 1.5rem);
      letter-spacing: -0.01em;
    }
    p {
      margin-bottom: 1rem;
    }
    img {
      max-width: 100%;
    }
    
    /* Navigation Styles - Enhanced */
    .navbar {
      position: fixed;
      top: 0;
      left: 0;
      right: 0;
      background: rgba(255, 255, 255, 0.95);
      backdrop-filter: blur(10px);
      -webkit-backdrop-filter: blur(10px);
      box-shadow: 0 1px 8px rgba(0, 0, 0, 0.05);
      z-index: 1000;
      padding: 0 2rem;
      height: var(--header-height);
      transition: var(--transition);
    }
    .navbar.scrolled {
      height: 64px;
      box-shadow: 0 4px 20px rgba(0, 0, 0, 0.1);
    }
    .nav-container {
      max-width: 1400px;
      margin: 0 auto;
      display: flex;
      justify-content: space-between;
      align-items: center;
      height: 100%;
    }
    .logo {
      font-size: 1.5rem;
      font-weight: 700;
      color: var(--primary);
      text-decoration: none;
      display: flex;
      align-items: center;
      gap: 0.75rem;
      transition: var(--transition);
    }
    .logo:hover {
      color: var(--primary-dark);
      transform: translateY(-1px);
    }
    .logo-icon {
      color: var(--accent);
    }
    .nav-links {
      display: flex;
      gap: 2rem;
    }
    .nav-links a {
      color: var(--dark);
      text-decoration: none;
      font-weight: 500;
      transition: var(--transition);
      position: relative;
      padding: 0.5rem 0;
    }
    .nav-links a:hover {
      color: var(--primary);
    }
    .nav-links a::after {
      content: "";
      position: absolute;
      bottom: 0;
      left: 0;
      width: 0;
      height: 2px;
      background: var(--primary);
      transition: var(--transition);
      border-radius: 2px;
      opacity: 0;
    }
    .nav-links a:hover::after {
      width: 100%;
      opacity: 1;
    }
    .nav-actions {
      display: flex;
      gap: 1rem;
      align-items: center;
    }
    .mobile-menu-btn {
      display: none;
      background: none;
      border: none;
      font-size: 1.5rem;
      color: var(--dark);
      cursor: pointer;
      padding: 0.25rem;
      transition: var(--transition);
    }
    .mobile-menu-btn:hover {
      color: var(--primary);
    }
    
    /* Mobile Navigation */
    .mobile-nav {
      position: fixed;
      top: var(--header-height);
      left: 0;
      right: 0;
      background: white;
      padding: 1.5rem;
      box-shadow: 0 4px 20px rgba(0, 0, 0, 0.1);
      display: none;
      transform: translateY(-1rem);
      opacity: 0;
      transition: var(--transition);
      z-index: 999;
    }
    .mobile-nav.active {
      transform: translateY(0);
      opacity: 1;
    }
    .mobile-nav-links {
      display: flex;
      flex-direction: column;
      gap: 1rem;
    }
    .mobile-nav-links a {
      color: var(--dark);
      text-decoration: none;
      font-weight: 500;
      padding: 0.75rem 0;
      border-bottom: 1px solid var(--light-gray);
      display: flex;
      align-items: center;
      gap: 0.75rem;
    }
    .mobile-nav-links a:last-child {
      border-bottom: none;
    }
    .mobile-nav-actions {
      margin-top: 1.5rem;
      display: grid;
      gap: 1rem;
    }
    
    /* Enhanced Header Styles */
    header {
      background: var(--bg-gradient);
      color: white;
      padding: 6rem 1rem 5rem;
      text-align: center;
      position: relative;
      overflow: hidden;
      margin-top: calc(-1 * var(--header-height));
      padding-top: calc(6rem + var(--header-height));
    }
    header::before {
      content: "";
      position: absolute;
      top: 0;
      left: 0;
      right: 0;
      bottom: 0;
      background: 
        radial-gradient(circle at 20% 30%, rgba(255,255,255,0.15) 0%, transparent 50%),
        radial-gradient(circle at 80% 70%, rgba(255,255,255,0.15) 0%, transparent 50%);
      pointer-events: none;
    }
    .header-content {
      max-width: 1200px;
      margin: 0 auto;
      position: relative;
      z-index: 1;
    }
    .header-subtitle {
      text-transform: uppercase;
      letter-spacing: 2px;
      font-size: 0.9rem;
      font-weight: 600;
      color: rgba(255, 255, 255, 0.9);
      background: rgba(255, 255, 255, 0.1);
      padding: 0.5rem 1rem;
      border-radius: 100px;
      margin-bottom: 1.5rem;
      display: inline-block;
    }
    header h1 {
      margin: 0 0 1.5rem;
      font-weight: 800;
    }
    header p {
      font-size: clamp(1.1rem, 2vw, 1.3rem);
      margin-bottom: 2.5rem;
      font-weight: 400;
      max-width: 700px;
      margin-left: auto;
      margin-right: auto;
      opacity: 0.9;
    }
    
    /* Enhanced Button Styles */
    .btn {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      gap: 0.5rem;
      font-weight: 600;
      padding: 0.9rem 2rem;
      border-radius: var(--radius-sm);
      text-decoration: none;
      transition: var(--transition);
      font-size: 1rem;
      border: 2px solid transparent;
      cursor: pointer;
    }
    .btn-primary {
      background: var(--accent);
      color: var(--dark);
      box-shadow: 0 4px 12px rgba(245, 158, 11, 0.3);
    }
    .btn-primary:hover {
      background: var(--accent-dark);
      transform: translateY(-2px);
      box-shadow: 0 6px 16px rgba(245, 158, 11, 0.4);
    }
    .btn-secondary {
      background: rgba(255, 255, 255, 0.15);
      color: white;
      backdrop-filter: blur(4px);
      border-color: rgba(255, 255, 255, 0.2);
    }
    .btn-secondary:hover {
      background: rgba(255, 255, 255, 0.25);
      transform: translateY(-2px);
    }
    .btn-outline {
      background: transparent;
      color: var(--primary);
      border-color: var(--primary);
    }
    .btn-outline:hover {
      background: var(--primary-bg);
      transform: translateY(-2px);
    }
    .cta-buttons {
      display: flex;
      gap: 1rem;
      flex-wrap: wrap;
      justify-content: center;
    }
    
    /* Stats Bar - Enhanced */
    .stats-bar {
      display: flex;
      justify-content: center;
      gap: 2rem;
      margin-top: 4rem;
      flex-wrap: wrap;
    }
    .stat-item {
      background: rgba(255, 255, 255, 0.1);
      backdrop-filter: blur(4px);
      padding: 1rem 1.5rem;
      border-radius: var(--radius-sm);
      min-width: 160px;
      transition: var(--transition);
    }
    .stat-item:hover {
      transform: translateY(-5px);
      background: rgba(255, 255, 255, 0.2);
    }
    .stat-number {
      font-size: 2rem;
      font-weight: 800;
      margin-bottom: 0.25rem;
      background: linear-gradient(to right, white, #e0f2fe);
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
    }
    .stat-label {
      font-size: 0.9rem;
      opacity: 0.8;
    }
    
    /* Enhanced Feature Grid */
    .feature-section {
      padding: 6rem 2rem;
      background: linear-gradient(to bottom, #f8fafc, #f1f5f9);
    }
    .container {
      max-width: 1300px;
      margin: 0 auto;
    }
    .section-header {
      text-align: center;
      margin-bottom: 4rem;
    }
    .section-header h2 {
      margin-bottom: 1rem;
      color: var(--dark);
      position: relative;
      display: inline-block;
    }
    .section-header h2::after {
      content: "";
      position: absolute;
      bottom: -0.75rem;
      left: 50%;
      transform: translateX(-50%);
      width: 80px;
      height: 4px;
      background: var(--primary);
      border-radius: 2px;
    }
    .section-header p {
      color: var(--gray);
      max-width: 600px;
      margin: 1.5rem auto 0;
      font-size: 1.1rem;
    }
    .feature-grid {
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
      gap: 2rem;
    }
    .feature-card {
      background: var(--card-bg);
      border-radius: var(--radius);
      box-shadow: var(--card-shadow);
      padding: 2.5rem 1.5rem;
      text-align: center;
      transition: var(--transition);
      position: relative;
      overflow: hidden;
      display: flex;
      flex-direction: column;
    }
    .feature-card::after {
      content: "";
      position: absolute;
      bottom: 0;
      left: 0;
      right: 0;
      height: 4px;
      background: linear-gradient(to right, var(--primary), var(--accent));
      transition: var(--transition);
      opacity: 0;
    }
    .feature-card:hover {
      transform: translateY(-8px);
      box-shadow: 0 16px 40px rgba(15, 23, 42, 0.1);
    }
    .feature-card:hover::after {
      opacity: 1;
    }
    .feature-icon {
      width: 70px;
      height: 70px;
      margin: 0 auto 1.5rem;
      display: flex;
      align-items: center;
      justify-content: center;
      background: var(--primary-bg);
      border-radius: 20px;
      color: var(--primary);
      font-size: 1.75rem;
      transition: var(--transition);
      box-shadow: 0 8px 20px rgba(37, 99, 235, 0.1);
    }
    .feature-card:hover .feature-icon {
      background: var(--primary);
      color: white;
      transform: scale(1.05);
    }
    .feature-card h3 {
      margin: 0 0 1rem;
      font-size: 1.4rem;
      color: var(--dark);
      font-weight: 700;
    }
    .feature-card p {
      color: var(--gray);
      font-size: 1rem;
      margin-bottom: 1.5rem;
      flex-grow: 1;
    }
    .feature-link {
      color: var(--primary);
      font-weight: 600;
      text-decoration: none;
      display: inline-flex;
      align-items: center;
      gap: 0.5rem;
      transition: var(--transition);
      padding: 0.5rem 0;
    }
    .feature-link:hover {
      color: var(--primary-dark);
      gap: 0.75rem;
    }
    
    /* Enhanced Demo Section */
    .demo-section {
      background: white;
      border-radius: var(--radius-lg);
      box-shadow: var(--card-shadow);
      margin: 6rem auto;
      max-width: 1100px;
      padding: 3rem 2rem;
      position: relative;
      overflow: hidden;
    }
    .demo-section::before {
      content: "";
      position: absolute;
      top: 0;
      left: 0;
      right: 0;
      height: 6px;
      background: linear-gradient(to right, var(--primary), var(--accent));
    }
    .demo-section h2 {
      color: var(--primary);
      margin-bottom: 1rem;
      font-size: 2rem;
      font-weight: 700;
      text-align: center;
    }
    .demo-section > p {
      text-align: center;
      margin-bottom: 3rem;
      max-width: 700px;
      margin-left: auto;
      margin-right: auto;
      color: var(--gray);
    }
    .demo-container {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 2.5rem;
      margin-top: 2rem;
    }
    .demo-column {
      display: flex;
      flex-direction: column;
    }
    .demo-label {
      font-weight: 600;
      margin-bottom: 0.75rem;
      color: var(--dark);
      font-size: 1rem;
      display: flex;
      align-items: center;
      gap: 0.5rem;
    }
    .demo-input, .demo-output {
      width: 100%;
      padding: 1.25rem;
      border-radius: var(--radius-sm);
      border: 1px solid var(--light-gray);
      font-size: 1rem;
      margin-bottom: 1rem;
      font-family: 'Fira Code', monospace;
      resize: none;
      min-height: 150px;
      transition: var(--transition);
      line-height: 1.5;
    }
    .demo-input:focus, .demo-output:focus {
      outline: none;
      border-color: var(--primary);
      box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
    }
    .demo-actions {
      display: flex;
      gap: 1rem;
      margin-top: 1rem;
    }
    .demo-btn {
      flex: 1;
      padding: 0.75rem;
      border-radius: var(--radius-sm);
      border: none;
      font-weight: 600;
      cursor: pointer;
      transition: var(--transition);
      display: flex;
      align-items: center;
      justify-content: center;
      gap: 0.5rem;
      font-size: 0.95rem;
    }
    .demo-btn-primary {
      background: var(--primary);
      color: white;
    }
    .demo-btn-primary:hover {
      background: var(--primary-dark);
      transform: translateY(-2px);
      box-shadow: 0 4px 12px rgba(37, 99, 235, 0.2);
    }
    .demo-btn-secondary {
      background: var(--secondary);
      color: var(--primary);
      border: 1px solid var(--light-gray);
    }
    .demo-btn-secondary:hover {
      background: white;
      transform: translateY(-2px);
      box-shadow: 0 4px 12px rgba(15, 23, 42, 0.1);
    }
    
    /* Settings Control Panel */
    .demo-settings {
      background: var(--primary-bg);
      padding: 1.5rem;
      border-radius: var(--radius-sm);
      margin-bottom: 2rem;
    }
    .settings-title {
      font-weight: 600;
      font-size: 1rem;
      margin-bottom: 1rem;
      display: flex;
      align-items: center;
      gap: 0.5rem;
      color: var(--primary-dark);
    }
    .settings-row {
      display: flex;
      gap: 1.5rem;
      flex-wrap: wrap;
    }
    .settings-group {
      flex: 1;
      min-width: 200px;
    }
    .settings-label {
      font-size: 0.9rem;
      margin-bottom: 0.5rem;
      display: block;
      color: var(--gray);
    }
    .settings-control {
      width: 100%;
      padding: 0.75rem;
      border-radius: var(--radius-sm);
      border: 1px solid #d1d5db;
      font-family: inherit;
      background: white;
    }
    .range-container {
      display: flex;
      align-items: center;
      gap: 1rem;
    }
    .range-slider {
      flex: 1;
    }
    .range-value {
      min-width: 3rem;
      text-align: center;
      font-weight: 600;
      color: var(--primary);
    }
    
    /* Enhanced Testimonials */
    .testimonials-section {
      background: linear-gradient(135deg, #f8fafc 0%, #f1f5f9 100%);
      padding: 6rem 2rem;
    }
    .testimonials-grid {
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
      gap: 2rem;
    }
    .testimonial-card {
      background: white;
      border-radius: var(--radius);
      box-shadow: var(--card-shadow);
      padding: 2.5rem 2rem;
      position: relative;
      transition: var(--transition);
    }
    .testimonial-card:hover {
      transform: translateY(-5px);
      box-shadow: 0 16px 40px rgba(15, 23, 42, 0.1);
    }
    .testimonial-card::before {
      content: """;
      position: absolute;
      top: 1rem;
      right: 1.5rem;
      font-size: 6rem;
      color: var(--primary-bg);
      font-family: serif;
      line-height: 1;
      z-index: 0;
    }
    .testimonial-content {
      position: relative;
      z-index: 1;
      margin-bottom: 2rem;
      font-style: italic;
      color: var(--dark);
      line-height: 1.7;
    }
    .testimonial-author {
      display: flex;
      align-items: center;
      gap: 1rem;
    }
    .author-avatar {
      width: 56px;
      height: 56px;
      border-radius: 50%;
      object-fit: cover;
      border: 3px solid var(--primary-bg);
    }
    .author-info {
      flex: 1;
    }
    .author-name {
      font-weight: 600;
      color: var(--dark);
      font-size: 1.1rem;
    }
    .author-title {
      font-size: 0.9rem;
      color: var(--gray);
    }
    .rating {
      color: var(--accent);
      font-size: 0.9rem;
      margin-top: 0.25rem;
    }
    
    /* Enhanced FAQ Section */
    .faq-section {
      padding: 6rem 2rem;
      background: white;
    }
    .faq-container {
      max-width: 800px;
      margin: 0 auto;
    }
    .faq-item {
      background: var(--secondary);
      border-radius: var(--radius-sm);
      margin-bottom: 1rem;
      overflow: hidden;
      border: 1px solid var(--light-gray);
      transition: var(--transition);
    }
    .faq-item:hover {
      box-shadow: 0 4px 20px rgba(15, 23, 42, 0.05);
    }
    .faq-question {
      padding: 1.5rem;
      font-weight: 600;
      color: var(--dark);
      cursor: pointer;
      display: flex;
      justify-content: space-between;
      align-items: center;
      transition: var(--transition);
    }
    .faq-question:hover {
      color: var(--primary);
    }
    .question-icon {
      transition: var(--transition);
    }
    .faq-answer {
      padding: 0 1.5rem;
      max-height: 0;
      overflow: hidden;
      transition: all 0.3s ease-out;
    }
    .faq-answer-content {
      padding: 0 0 1.5rem;
      color: var(--gray);
    }
    .faq-item.active {
      background: white;
      border-color: var(--primary-bg);
    }
    .faq-item.active .faq-question {
      color: var(--primary);
    }
    .faq-item.active .question-icon {
      transform: rotate(180deg);
    }
    .faq-item.active .faq-answer {
      max-height: 300px;
    }
    
    /* CTA Section */
    .cta-section {
      padding: 6rem 2rem;
      background: var(--bg-gradient);
      color: white;
      text-align: center;
    }
    .cta-container {
      max-width: 800px;
      margin: 0 auto;
    }
    .cta-section h2 {
      margin-bottom: 1.5rem;
      font-size: 2.5rem;
    }
    .cta-section p {
      margin-bottom: 2.5rem;
      font-size: 1.2rem;
      opacity: 0.9;
      max-width: 600px;
      margin-left: auto;
      margin-right: auto;
    }
    
    /* Enhanced Footer */
    footer {
      background: var(--dark);
      color: white;
      padding: 5rem 2rem 2rem;
    }
    .footer-container {
      max-width: 1300px;
      margin: 0 auto;
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
      gap: 3rem;
    }
    .footer-logo {
      font-size: 1.5rem;
      font-weight: 700;
      margin-bottom: 1.5rem;
      display: inline-block;
      color: white;
      text-decoration: none;
      display: flex;
      align-items: center;
      gap: 0.75rem;
    }
    .footer-about {
      margin-bottom: 1.5rem;
      opacity: 0.8;
      line-height: 1.7;
    }
    .footer-social {
      display: flex;
      gap: 1rem;
    }
    .social-link {
      width: 42px;
      height: 42px;
      border-radius: 12px;
      background: rgba(255, 255, 255, 0.1);
      display: flex;
      align-items: center;
      justify-content: center;
      transition: var(--transition);
      color: white;
      text-decoration: none;
      font-size: 1.2rem;
    }
    .social-link:hover {
      background: var(--primary);
      transform: translateY(-3px);
    }
    .footer-links h3 {
      font-size: 1.1rem;
      margin-bottom: 1.5rem;
      position: relative;
      padding-bottom: 0.75rem;
      color: white;
    }
    .footer-links h3::after {
      content: "";
      position: absolute;
      bottom: 0;
      left: 0;
      width: 40px;
      height: 2px;
      background: var(--primary);
    }
    .footer-links ul {
      list-style: none;
    }
    .footer-links li {
      margin-bottom: 0.75rem;
    }
    .footer-links a {
      color: white;
      opacity: 0.8;
      text-decoration: none;
      transition: var(--transition);
      display: inline-flex;
      align-items: center;
      gap: 0.5rem;
    }
    .footer-links a:hover {
      opacity: 1;
      color: var(--accent);
      transform: translateX(3px);
    }
    .footer-links a i {
      font-size: 0.75rem;
      opacity: 0.7;
    }
    .footer-bottom {
      text-align: center;
      margin-top: 4rem;
      padding-top: 2rem;
      border-top: 1px solid rgba(255, 255, 255, 0.1);
      opacity: 0.7;
      font-size: 0.9rem;
    }

    .footer-bottom a {
      color: white;
      text-decoration: none;
      transition: var(--transition);
    }

    .footer-bottom a:hover {
      opacity: 1;
      text-decoration: underline;
    }
    
    /* Animations */
    @keyframes fadeUp {
      from {
        opacity: 0;
        transform: translateY(20px);
      }
      to {
        opacity: 1;
        transform: translateY(0);
      }
    }
    .animate-fadeUp {
      animation: fadeUp 0.6s ease-out forwards;
    }

    /* Morse Code Visual Indicator */
    .morse-visualizer {
      display: flex;
      gap: 0.5rem;
      margin: 1rem 0;
      overflow-x: auto;
      padding: 0.5rem;
    }
    .morse-symbol {
      height: 30px;
      display: flex;
      align-items: center;
    }
    .dot {
      width: 10px;
      height: 10px;
      border-radius: 50%;
      background-color: var(--primary);
    }
    .dash {
      width: 30px;
      height: 10px;
      border-radius: 5px;
      background-color: var(--primary);
    }
    .space {
      width: 15px;
      height: 10px;
    }
    .char-space {
      width: 30px;
      height: 10px;
    }
    
    /* Responsive Styles */
    @media (max-width: 1024px) {
      .demo-container {
        grid-template-columns: 1fr;
      }
    }
    
    @media (max-width: 768px) {
      .navbar {
        padding: 0 1rem;
      }
      .nav-links, .nav-actions {
        display: none;
      }
      .mobile-menu-btn {
        display: block;
      }
      .stats-bar {
        gap: 1rem;
      }
      .stat-item {
        min-width: 120px;
        padding: 0.75rem 1rem;
      }
      .stat-number {
        font-size: 1.5rem;
      }
    }
    
    @media (max-width: 480px) {
      .cta-buttons {
        flex-direction: column;
      }
      .btn {
        width: 100%;
      }
      .header-subtitle {
        font-size: 0.8rem;
      }
      header h1 {
        margin-bottom: 1rem;
      }
      header p {
        margin-bottom: 2rem;
      }
    }