/* Root Variables */
  :root {
    --color-primary: #6FE2A8;
    --color-secondary: #00380E;
    --color-secondary-light: #EAB7EF;
    --color-accent: #5B0047;
    --color-bg: #ffffff;
    --color-text: #2d3748;
    --spacing-md: 1rem;
    --spacing-lg: 2rem;
    --radius: 0.5rem;
  }

  html, body {
    margin: 0;
    padding: 0;
  }

  /* Reset & Base */
  * {
    box-sizing: border-box;
  }
  body {
    font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    color: var(--color-text);
    background: var(--color-bg);
    line-height: 1.6;
  }
  a { text-decoration: none; }

  /* Containers & Sections */
  .container {
    max-width: 960px;
    margin: 0 auto;
    padding: 0 var(--spacing-md);
  }
  .section {
    padding: var(--spacing-lg) 0;
  }

  /* Hero Header */
  #hero {
    background: var(--color-primary);
    color: #fff;
    text-align: center;
    padding: calc(var(--spacing-lg) * 1.5) 0;
  }
  #hero h1 {
    color: var(--color-accent);
    font-size: 2.5rem;
    line-height: 1.2;
  }
  .subhead {
    color: var(--color-accent);
    font-size: 1.25rem;
    margin-top: var(--spacing-md);
  }
  .cta-group {
    margin-top: var(--spacing-lg);
    display: flex;
    justify-content: center;
    gap: var(--spacing-md);
  }
  .btn {
    display: inline-block;
    padding: 0.75rem 1.5rem;
    border-radius: var(--radius);
    font-weight: 600;
    transition: background 0.3s ease, color 0.3s ease;
  }
  .btn.primary {
    background: var(--color-secondary);
    border: 2px solid var(--color-secondary);
      color: var(--color-primary);
  }
  .btn.primary:hover {
    background: var(--color-primary);
    border: 2px solid var(--color-secondary);
    color: var(--color-secondary);
  }
  .btn.secondary {
    background: transparent;
    border: 2px solid var(--color-secondary);
    color: var(--color-secondary);
  }
  .btn.secondary:hover {
    background: var(--color-secondary);
      color: var(--color-primary);
  }

  /* Logo Styling */
  .logo {
    display: block;
    margin: 0 auto var(--spacing-md);
    max-width: 400px;
    height: auto;
  }

  /* Typography */
  h1, h2, h3 {
    color: var(--color-secondary);
    margin-bottom: var(--spacing-md);
  }
  h2 { font-size: 2rem; }
  h3 { font-size: 1.5rem; }
  p { margin-top: var(--spacing-md); }

  /* Two-Column Layout */
  .two-column {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: var(--spacing-lg);
  }

  /* Diagram & Chart Placeholders */
  .diagram-placeholder,
  .chart-placeholder {
    background: #edf2f7;
    color: #484f58;
    padding: calc(var(--spacing-lg) * 1.5);
    border-radius: var(--radius);
    margin-top: var(--spacing-md);
  }

  /* Features List */
  .features-list {
    list-style: none;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: var(--spacing-md);
    margin-top: var(--spacing-md);
  }
  .features-list li {
    padding-left: 1.25rem;
    position: relative;
  }
  .features-list li::before {
    content: "✔";
    position: absolute;
    left: 0;
    top: 0;
    color: var(--color-accent);
  }

  /* Use Cases Grid */
  .use-cases-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: var(--spacing-lg);
    margin-top: var(--spacing-md);
  }
  .use-cases-grid article {
    background: #f7fafc;
    padding: var(--spacing-md);
    border-radius: var(--radius);
  }

  /* Roadmap Timeline */
  .timeline {
    list-style: none;
    position: relative;
    margin-top: var(--spacing-md);
    padding-left: 1.5rem;
  }
  .timeline::before {
    content: '';
    position: absolute;
    left: 0.5rem;
    top: 0;
    bottom: 0;
    width: 2px;
    background: var(--color-accent);
  }
  .timeline li {
    margin-bottom: var(--spacing-md);
    padding-left: var(--spacing-md);
    position: relative;
  }
  .timeline li::before {
    content: '';
    position: absolute;
    left: -0.375rem;
    top: 0.25rem;
    width: 0.75rem;
    height: 0.75rem;
    background: var(--color-accent);
    border-radius: 50%;
  }
  .plain-lists, .plain-lists li {
    list-style: revert;
    margin: revert;
    padding: revert;
    content: revert;
  }

  /* Contact Section */
  #contact p, #team p {
    margin-top: var(--spacing-md);
  }

  a { color: var(--color-secondary); }
  a:hover { text-decoration: underline; }

  dd {
    margin-left: 2em;
    padding-left: 2em;
  }