/* CSS Variables - Brand System */
    :root {
      --color-primary: #0A4BAF;
      --color-accent: #20c997; /* Teal accent for TheCSGap */
      --color-primary-dark: #083b8b;
      
      --color-text: #1a1a1a;
      --color-text-secondary: #3b3b3b;
      --color-text-muted: #6b6b6b;
      
      --color-border: #e0e0e0;
      --color-border-medium: #cccccc;
      --color-bg-alt: #f8f9fa;
      
      --color-success: #28a745;
      --color-error: #dc3545;
      
      --space-xs: 0.5rem;
      --space-sm: 1rem;
      --space-md: 1.5rem;
      --space-lg: 2rem;
      --space-xl: 3rem;
      --space-2xl: 4rem;
      --space-3xl: 6rem;
      
      --font-heading: 'Poppins', sans-serif;
      --font-body: 'Nunito Sans', sans-serif;
      
      --radius-sm: 0.5rem;
      --radius-md: 0.75rem;
      --radius-lg: 1rem;
      
      --shadow-sm: 0 2px 8px rgba(0,0,0,0.05);
      --shadow-md: 0 4px 16px rgba(0,0,0,0.08);
    }
    
    /* Base Styles */
    * {
      margin: 0;
      padding: 0;
      box-sizing: border-box;
    }
    
    html {
      scroll-behavior: smooth;
    }
    
    body {
      font-family: var(--font-body);
      font-size: 1rem;
      line-height: 1.7;
      color: var(--color-text);
      background: #ffffff;
    }
    
    h1, h2, h3, h4, h5, h6 {
      font-family: var(--font-heading);
      font-weight: 700;
      color: var(--color-text);
      margin-bottom: var(--space-md);
    }
    
    h1 {
      font-size: 3.5rem;
      line-height: 1.2;
      color: var(--color-primary);
    }
    
    h2 {
      font-size: 2.5rem;
      line-height: 1.3;
    }
    
    h3 {
      font-size: 1.75rem;
      line-height: 1.4;
      font-weight: 600;
    }
    
    h4 {
      font-size: 1.25rem;
      line-height: 1.5;
      font-weight: 600;
    }
    
    p {
      margin-bottom: var(--space-md);
    }
    
    .lead {
      font-size: 1.25rem;
      color: var(--color-text-secondary);
      line-height: 1.6;
    }
    
    /* Responsive Typography */
    @media (max-width: 768px) {
      h1 {
        font-size: 2.5rem;
      }
      h2 {
        font-size: 2rem;
      }
      h3 {
        font-size: 1.5rem;
      }
    }
    
    /* Buttons */
    .btn {
      display: inline-block;
      padding: 0.75rem 1.5rem;
      border-radius: var(--radius-sm);
      font-family: var(--font-body);
      font-size: 1rem;
      font-weight: 600;
      text-decoration: none;
      text-align: center;
      border: none;
      cursor: pointer;
      transition: all 150ms ease-out;
    }
    
    .btn-primary {
      background-color: var(--color-primary);
      color: #ffffff;
    }
    
    .btn-primary:hover {
      background-color: var(--color-primary-dark);
      transform: scale(0.98);
      color: #ffffff;
    }
    
    .btn-secondary {
      background-color: transparent;
      color: var(--color-primary);
      border: 2px solid var(--color-primary);
    }
    
    .btn-secondary:hover {
      background-color: #f0f5ff;
    }
    
    .btn-lg {
      padding: 1rem 2rem;
      font-size: 1.125rem;
    }
    
    /* Forms */
    input[type="email"],
    input[type="text"] {
      font-family: var(--font-body);
      font-size: 1rem;
      padding: 0.75rem 1rem;
      border: 1px solid var(--color-border-medium);
      border-radius: var(--radius-sm);
      width: 100%;
      transition: all 200ms ease-in-out;
    }
    
    input[type="email"]:focus,
    input[type="text"]:focus {
      outline: none;
      border-color: var(--color-primary);
      box-shadow: 0 0 0 3px rgba(10, 75, 175, 0.1);
    }
    
    .form-inline {
      display: flex;
      gap: 0;
      max-width: 500px;
      margin: 0 auto;
    }
    
    .form-inline input {
      flex: 1;
      border-radius: var(--radius-sm) 0 0 var(--radius-sm);
      border-right: none;
    }
    
    .form-inline button {
      border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
      white-space: nowrap;
    }
    
    /* Cards */
    .card {
      background: #ffffff;
      border: 1px solid var(--color-border);
      border-radius: var(--radius-md);
      padding: var(--space-lg);
      box-shadow: var(--shadow-sm);
      transition: box-shadow 200ms ease-in-out;
    }
    
    .card:hover {
      box-shadow: var(--shadow-md);
    }
    
    .card h4 {
      margin-bottom: var(--space-sm);
    }
    
    .card p {
      margin-bottom: 0;
      color: var(--color-text-secondary);
    }
    
    /* Navbar */
    nav {
      background: #ffffff;
      box-shadow: var(--shadow-sm);
      padding: 1rem 2rem;
      position: sticky;
      top: 0;
      z-index: 1000;
    }
    
    .navbar-content {
      max-width: 1200px;
      margin: 0 auto;
      display: flex;
      justify-content: space-between;
      align-items: center;
    }
    
    .navbar-brand img {
      height: 40px;
      display: block;
    }
    
    /* Sections */
    section {
      padding: var(--space-2xl) var(--space-lg);
    }
    
    .container {
      max-width: 1200px;
      margin: 0 auto;
    }
    
    .container-narrow {
      max-width: 800px;
      margin: 0 auto;
    }
    
    .text-center {
      text-align: center;
    }
    
    @media (max-width: 768px) {
      section {
        padding: var(--space-xl) var(--space-md);
      }
    }
    
    /* Hero Section */
    .hero {
      padding: var(--space-3xl) var(--space-lg);
      text-align: center;
      background: linear-gradient(135deg, #f8f9fa 0%, #ffffff 100%);
    }
    
    .hero h1 {
      margin-bottom: var(--space-md);
    }
    
    .hero .lead {
      margin-bottom: var(--space-xl);
      max-width: 700px;
      margin-left: auto;
      margin-right: auto;
    }
    
    .hero-image {
      max-width: 400px;
      margin: var(--space-xl) auto 0;
      display: block;
    }
    
    @media (max-width: 768px) {
      .hero {
        padding: var(--space-2xl) var(--space-md);
      }
      .hero-image {
        max-width: 280px;
      }
    }
    
    /* Features Grid */
    .features-grid {
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
      gap: var(--space-xl);
      margin-top: var(--space-xl);
    }
    
    .feature-icon {
      width: 48px;
      height: 48px;
      background: var(--color-accent);
      color: #ffffff;
      border-radius: var(--radius-sm);
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 24px;
      margin-bottom: var(--space-md);
    }
    
    /* Alternating Background */
    .bg-alt {
      background-color: var(--color-bg-alt);
    }
    
    /* How It Works Section */
    .steps {
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
      gap: var(--space-lg);
      margin-top: var(--space-xl);
    }
    
    .step {
      text-align: center;
    }
    
    .step-number {
      width: 60px;
      height: 60px;
      background: var(--color-primary);
      color: #ffffff;
      border-radius: 50%;
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 1.5rem;
      font-weight: 700;
      margin: 0 auto var(--space-md);
    }
    
    /* Footer */
    footer {
      background: var(--color-primary);
      color: #ffffff;
      text-align: center;
      padding: var(--space-xl) var(--space-lg);
      margin-top: var(--space-2xl);
    }
    
    footer p {
      margin: 0;
      font-size: 0.875rem;
    }
    
    footer a {
      color: #ffffff;
      font-weight: 600;
      text-decoration: none;
      transition: opacity 200ms ease-out;
    }
    
    footer a:hover {
      opacity: 0.8;
      text-decoration: underline;
    }
    
    /* Utility Classes */
    .mb-0 { margin-bottom: 0; }
    .mb-1 { margin-bottom: var(--space-sm); }
    .mb-2 { margin-bottom: var(--space-md); }
    .mb-3 { margin-bottom: var(--space-lg); }
    .mb-4 { margin-bottom: var(--space-xl); }
    
    .mt-0 { margin-top: 0; }
    .mt-1 { margin-top: var(--space-sm); }
    .mt-2 { margin-top: var(--space-md); }
    .mt-3 { margin-top: var(--space-lg); }
    .mt-4 { margin-top: var(--space-xl); }