:root {
      --primary-color: #25b45b;
      --primary-dark: #1e9449;
      --primary-light: #2ed66b;
      --transition-speed: 0.3s;
      --shadow-sm: 0 2px 8px rgba(37, 180, 91, 0.15);
      --shadow-md: 0 4px 16px rgba(37, 180, 91, 0.25);
      --shadow-lg: 0 8px 32px rgba(37, 180, 91, 0.35);
    }
    
    * {
      font-family: 'Satoshi', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    }
    
    body {
      min-height: 100vh;
      display: flex;
      flex-direction: column;
      background: #fafbfc;
    }
    
    main {
      flex: 1;
    }
    
    /* Hero Section - Conversion Optimized */
    .hero-section {
      background: linear-gradient(135deg, #25b45b 0%, #1e9449 100%);
      color: white;
      padding: 5rem 0 6rem;
      position: relative;
      overflow: hidden;
    }
    
    .hero-section::before {
      content: '';
      position: absolute;
      top: 0;
      left: 0;
      right: 0;
      bottom: 0;
      background: url("data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none' fill-rule='evenodd'%3E%3Cg fill='%23ffffff' fill-opacity='0.05'%3E%3Cpath d='M36 34v-4h-2v4h-4v2h4v4h2v-4h4v-2h-4zm0-30V0h-2v4h-4v2h4v4h2V6h4V4h-4zM6 34v-4H4v4H0v2h4v4h2v-4h4v-2H6zM6 4V0H4v4H0v2h4v4h2V6h4V4H6z'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E");
      opacity: 0.4;
    }
    
    .hero-content {
      position: relative;
      z-index: 1;
    }
    
    .hero-section h1 {
      font-size: clamp(2rem, 5vw, 3.5rem);
      font-weight: 700;
      text-shadow: 0 2px 12px rgba(0,0,0,0.1);
      margin-bottom: 1.5rem;
      letter-spacing: -0.02em;
    }
    
    .hero-section .lead {
      font-size: clamp(1.1rem, 2.5vw, 1.35rem);
      font-weight: 400;
      opacity: 0.95;
      margin: 0 auto 2.5rem;
    }
    
    /* Trust Indicators */
    .trust-badges {
      display: flex;
      justify-content: center;
      gap: 2rem;
      margin-top: 2rem;
      flex-wrap: wrap;
    }
    
    .trust-badge {
      display: flex;
      align-items: center;
      gap: 0.5rem;
      color: rgba(255,255,255,0.9);
      font-size: 0.9rem;
      font-weight: 500;
    }
    
    .trust-badge svg {
      width: 20px;
      height: 20px;
    }
    
    /* Form Styling - Conversion Focused */
    #signup-form {
      max-width: 650px;
      margin: 0 auto;
    }
    
    .form-control {
      border: 2px solid rgba(255,255,255,0.3);
      background: rgba(255,255,255,0.95);
      padding: 0.875rem 1.25rem;
      font-size: 1.05rem;
      border-radius: 12px;
      transition: all var(--transition-speed) ease;
      font-weight: 400;
    }
    
    .form-control:focus {
      border-color: white;
      background: white;
      box-shadow: 0 0 0 4px rgba(255,255,255,0.2);
      transform: translateY(-2px);
    }
    
    .form-control::placeholder {
      color: #999;
    }
    
    .btn-primary {
      background: white;
      color: var(--primary-color);
      border: none;
      padding: 0.875rem 2.5rem;
      font-size: 1.1rem;
      font-weight: 700;
      border-radius: 12px;
      transition: all var(--transition-speed) ease;
      box-shadow: var(--shadow-sm);
      letter-spacing: 0.01em;
    }
    
    .btn-primary:hover {
      background: #ffffff;
      color: var(--primary-dark);
      transform: translateY(-3px);
      box-shadow: var(--shadow-lg);
    }
    
    .btn-primary:active {
      transform: translateY(-1px);
    }
    
    /* Social Proof Section */
    .social-proof {
      background: white;
      padding: 3rem 0;
      border-bottom: 1px solid #e9ecef;
    }
    
    .stat-card {
      text-align: center;
      padding: 1rem;
    }
    
    .stat-number {
      font-size: 2.5rem;
      font-weight: 700;
      color: var(--primary-color);
      line-height: 1;
      margin-bottom: 0.5rem;
    }
    
    .stat-label {
      color: #6c757d;
      font-size: 0.95rem;
      font-weight: 500;
    }
    
    /* Benefits Section - Enhanced */
    .benefits-section {
      padding: 5rem 0;
      background: linear-gradient(180deg, #ffffff 0%, #f8f9fa 100%);
    }
    
    .benefits-section h2 {
      font-size: clamp(2rem, 4vw, 2.75rem);
      font-weight: 700;
      color: #1a1a1a;
      margin-bottom: 3.5rem;
      letter-spacing: -0.02em;
    }
    
    .benefit-card {
      background: white;
      border-radius: 16px;
      padding: 2.5rem 2rem;
      transition: all var(--transition-speed) ease;
      height: 100%;
      border: 2px solid transparent;
      box-shadow: 0 2px 8px rgba(0,0,0,0.04);
    }
    
    .benefit-card:hover {
      transform: translateY(-8px);
      border-color: var(--primary-color);
      box-shadow: var(--shadow-md);
    }
    
    .benefit-icon {
      width: 64px;
      height: 64px;
      background: linear-gradient(135deg, var(--primary-color), var(--primary-light));
      border-radius: 16px;
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 2rem;
      margin: 0 auto 1.5rem;
      box-shadow: var(--shadow-sm);
    }
    
    .benefit-card h3 {
      font-size: 1.35rem;
      font-weight: 700;
      color: #1a1a1a;
      margin-bottom: 1rem;
    }
    
    .benefit-card p {
      color: #666;
      font-size: 1rem;
      line-height: 1.6;
      margin: 0;
    }
    
    /* CTA Section */
    .cta-section {
      background: var(--primary-color);
      color: white;
      padding: 4rem 0;
      text-align: center;
    }
    
    .cta-section h2 {
      font-size: clamp(1.75rem, 4vw, 2.5rem);
      font-weight: 700;
      margin-bottom: 1.5rem;
    }
    
    .cta-section p {
      font-size: 1.15rem;
      opacity: 0.95;
      margin-bottom: 2rem;
      max-width: 600px;
      margin-left: auto;
      margin-right: auto;
    }
    
    .btn-secondary {
      background: white;
      color: var(--primary-color);
      border: none;
      padding: 1rem 3rem;
      font-size: 1.15rem;
      font-weight: 700;
      border-radius: 12px;
      transition: all var(--transition-speed) ease;
      box-shadow: var(--shadow-md);
    }
    
    .btn-secondary:hover {
      background: #f8f9fa;
      color: var(--primary-dark);
      transform: translateY(-3px);
      box-shadow: var(--shadow-lg);
    }
    
    /* Alert Styling */
    .alert {
      border-radius: 12px;
      border: none;
      padding: 1rem 1.5rem;
      animation: slideDown 0.3s ease;
      font-weight: 500;
    }
    
    .alert-danger {
      background: #fee;
      color: #c33;
    }
    
    .alert-success {
      background: #e8f8ee;
      color: var(--primary-dark);
    }
    
    @keyframes slideDown {
      from {
        opacity: 0;
        transform: translateY(-10px);
      }
      to {
        opacity: 1;
        transform: translateY(0);
      }
    }
    
    /* Loading State */
    .btn-loading {
      position: relative;
      pointer-events: none;
      opacity: 0.8;
    }
    
    .btn-loading .btn-text {
      visibility: hidden;
    }
    
    .btn-loading::after {
      content: "";
      position: absolute;
      width: 1.2rem;
      height: 1.2rem;
      top: 50%;
      left: 50%;
      margin-left: -0.6rem;
      margin-top: -0.6rem;
      border: 3px solid var(--primary-color);
      border-radius: 50%;
      border-top-color: transparent;
      animation: spinner 0.6s linear infinite;
    }
    
    @keyframes spinner {
      to { transform: rotate(360deg); }
    }
    
    /* Footer */
    footer {
      background: #1a1a1a;
      color: rgba(255,255,255,0.7);
      padding: 2rem 0;
      margin-top: auto;
    }
    
    footer small {
      font-size: 0.9rem;
    }
    
    /* Responsive */
    @media (max-width: 768px) {
      .hero-section {
        padding: 3rem 0 4rem;
      }
      
      #signup-form .col-md-6 {
        margin-bottom: 1rem;
      }
      
      .btn-primary {
        width: 100%;
      }
      
      .trust-badges {
        gap: 1rem;
      }
      
      .stat-number {
        font-size: 2rem;
      }
    }
    
    /* Accessibility */
    .visually-hidden-focusable:not(:focus):not(:focus-within) {
      position: absolute !important;
      width: 1px !important;
      height: 1px !important;
      padding: 0 !important;
      margin: -1px !important;
      overflow: hidden !important;
      clip: rect(0, 0, 0, 0) !important;
      white-space: nowrap !important;
      border: 0 !important;
    }