* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
  }
  
  :root {
    --whatsapp-teal: #128c7e;
    --whatsapp-green: #25d366;
    --primary-blue: #2563eb;
    --gray-50: #f8fafc;
    --gray-100: #f1f5f9;
    --gray-200: #e2e8f0;
    --gray-400: #94a3b8;
    --gray-600: #475569;
    --gray-700: #334155;
    --gray-800: #1e293b;
    --gray-900: #0f172a;
  }
  
  body {
    font-family: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI",
      sans-serif;
    line-height: 1.7;
    color: var(--gray-700);
    background: var(--gray-50);
  }
  
  .container {
    max-width: 800px;
    margin: 0 auto;
    padding: 0 1rem;
  }
  
  /* Header */
  header {
    background: transparent;
    margin-top: 20px;
    width: 100%;
  }
  
  nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem 0;
  }
  
  .logo {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 1.5rem;
    font-weight: bold;
    color: var(--whatsapp-teal);
    text-decoration: none;
    transition: all 0.3s ease;
  }
  
  .logo:hover {
    transform: scale(1.05);
  }
  
  .logo-icon {
    width: 32px;
    height: 32px;
    border-radius: 50%;
  }
  
  .back-btn {
    background: var(--gray-100);
    color: var(--gray-700);
    padding: 0.5rem 1rem;
    border: none;
    border-radius: 0.5rem;
    text-decoration: none;
    transition: all 0.3s ease;
  }
  
  .back-btn:hover {
    background: var(--whatsapp-teal);
    color: white;
    transform: translateX(-2px);
  }
  
  /* Main Content */
  main {
    padding: 3rem 0;
  }
  
  .policy-header {
    text-align: center;
    margin-bottom: 3rem;
    padding: 2rem 0;
    background: white;
    border-radius: 1rem;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.05);
  }
  
  .policy-header h1 {
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--gray-900);
    margin-bottom: 0.5rem;
  }
  
  .policy-header p {
    color: var(--gray-600);
    font-size: 1.1rem;
  }
  
  .last-updated {
    background: var(--gray-100);
    padding: 1rem;
    border-radius: 0.5rem;
    border-left: 4px solid var(--whatsapp-teal);
    margin-bottom: 2rem;
    font-weight: 500;
  }
  
  .policy-content {
    background: white;
    padding: 3rem;
    border-radius: 1rem;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.05);
    margin-bottom: 2rem;
  }
  
  .policy-section {
    margin-bottom: 3rem;
    padding-bottom: 2rem;
    border-bottom: 1px solid var(--gray-100);
  }
  
  .policy-section:last-child {
    border-bottom: none;
    margin-bottom: 0;
  }
  
  .policy-section h2 {
    font-size: 1.8rem;
    font-weight: 600;
    color: var(--gray-900);
    margin-bottom: 1rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
  }
  
  .policy-section h3 {
    font-size: 1.3rem;
    font-weight: 600;
    color: var(--gray-800);
    margin: 1.5rem 0 1rem;
  }
  
  .policy-section p {
    margin-bottom: 1rem;
    text-align: justify;
  }
  
  .policy-section ul {
    margin: 1rem 0;
    padding-left: 1.5rem;
  }
  
  .policy-section li {
    margin-bottom: 0.5rem;
    position: relative;
  }
  
  .policy-section li::marker {
    color: var(--whatsapp-teal);
  }
  
  .highlight-box {
    background: linear-gradient(135deg, #f0fdf4, #dcfce7);
    border: 1px solid var(--whatsapp-teal);
    border-radius: 0.75rem;
    padding: 1.5rem;
    margin: 1.5rem 0;
    position: relative;
  }
  
  .highlight-box::before {
    content: "🔒";
    position: absolute;
    top: -10px;
    left: 20px;
    background: white;
    border-radius: 50px;
    padding: 0 0.5rem;
    font-size: 1.2rem;
  }
  
  .contact-section {
    background: var(--gray-100);
    padding: 2rem;
    border-radius: 1rem;
    text-align: center;
    margin-top: 2rem;
  }
  
  .contact-section h2 {
    color: var(--gray-900);
    margin-bottom: 1rem;
  }
  
  .contact-info {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1rem;
    margin-top: 1.5rem;
  }
  
  .contact-item {
    background: white;
    padding: 1rem;
    border-radius: 0.5rem;
    transition: all 0.3s ease;
  }
  
  .contact-item:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
  }
  
  .contact-item strong {
    color: var(--whatsapp-teal);
  }
  
  /* Table of Contents */
  .toc {
    background: var(--gray-100);
    padding: 1.5rem;
    border-radius: 0.75rem;
    margin-bottom: 2rem;
  }
  
  .toc h3 {
    color: var(--gray-900);
    margin-bottom: 1rem;
  }
  
  .toc ul {
    list-style: none;
    padding: 0;
  }
  
  .toc li {
    margin-bottom: 0.5rem;
  }
  
  .toc a {
    color: var(--gray-600);
    text-decoration: none;
    transition: color 0.3s ease;
  }
  
  .toc a:hover {
    color: var(--whatsapp-teal);
  }
  
  .toc a.active {
    color: var(--whatsapp-teal);
    font-weight: bold;
  }
  
  /* Footer */
  footer {
    background: var(--gray-900);
    color: white;
    padding: 2rem 0;
    text-align: center;
    margin-top: 3rem;
  }
  
  /* Responsive Design */
  @media (max-width: 768px) {
    .container {
      padding: 0 1rem;
    }
  
    .policy-content {
      padding: 2rem 1.5rem;
    }
  
    .policy-header h1 {
      font-size: 2rem;
    }
  
    .contact-info {
      grid-template-columns: 1fr;
    }
  
    .logo {
      font-size: 1.3rem;
    }
  
    .logo-icon {
      width: 28px;
      height: 28px;
    }
  }
  
  /* Smooth scroll behavior */
  html {
    scroll-behavior: smooth;
  }
  
  /* Back to top button */
  .back-to-top {
    position: fixed;
    bottom: 2rem;
    right: 2rem;
    background: var(--whatsapp-teal);
    color: white;
    border: none;
    border-radius: 50%;
    width: 50px;
    height: 50px;
    font-size: 1.2rem;
    cursor: pointer;
    box-shadow: 0 4px 12px rgba(18, 140, 126, 0.3);
    transition: all 0.3s ease;
    z-index: 1000;
    display: none;
  }
  
  .back-to-top:hover {
    background: var(--whatsapp-green);
    transform: scale(1.1);
  }