:root {
      --primary-color: #2c3e50;
      --accent-color: #3498db;
      --bg-color: #ecf0f1;
      --card-bg: #ffffff;
      --code-bg: #f5f5f5;
      --font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
      --mono-font: 'Courier New', Courier, monospace;
    }
    body {
      margin: 0;
      font-family: var(--font-family);
      background-color: var(--bg-color);
      color: var(--primary-color);
      line-height: 1.6;
    }
    header {
      background-color: var(--primary-color);
      color: white;
      padding: 2rem 1rem;
      text-align: center;
    }
    header h1 {
      margin: 0;
      font-size: 2.5rem;
    }
    header p {
      margin: 0.5rem 0 0;
      font-size: 1.2rem;
      opacity: 0.9;
    }
    main {
      padding: 2rem 1rem;
      max-width: 900px;
      margin: 0 auto;
    }
    section {
      margin-bottom: 3rem;
    }
    h2 {
      color: var(--primary-color);
      border-bottom: 2px solid var(--accent-color);
      padding-bottom: 0.5rem;
      margin-top: 2rem;
    }
    h3 {
      color: var(--primary-color);
      margin-top: 1.5rem;
    }
    pre {
      background-color: var(--code-bg);
      border: 1px solid #ddd;
      border-radius: 4px;
      padding: 1rem;
      overflow-x: auto;
      font-family: var(--mono-font);
      font-size: 0.9rem;
      line-height: 1.4;
    }
    code {
      background-color: var(--code-bg);
      padding: 0.2rem 0.4rem;
      border-radius: 3px;
      font-family: var(--mono-font);
      font-size: 0.9em;
    }
    pre code {
      background-color: transparent;
      padding: 0;
    }
    .features {
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
      gap: 1.5rem;
      margin: 1.5rem 0;
    }
    .feature-card {
      background-color: var(--card-bg);
      border-radius: 8px;
      padding: 1.5rem;
      box-shadow: 0 2px 4px rgba(0,0,0,0.1);
    }
    .feature-card h3 {
      margin-top: 0;
      color: var(--accent-color);
    }
    .cta-buttons {
      display: flex;
      gap: 1rem;
      margin: 2rem 0;
      flex-wrap: wrap;
    }
    .btn {
      display: inline-block;
      padding: 0.75rem 1.5rem;
      background-color: var(--accent-color);
      color: white;
      text-decoration: none;
      border-radius: 5px;
      font-weight: bold;
      transition: background-color 0.3s;
    }
    .btn:hover {
      background-color: #2980b9;
    }
    .btn-secondary {
      background-color: #95a5a6;
    }
    .btn-secondary:hover {
      background-color: #7f8c8d;
    }
    footer {
      text-align: center;
      padding: 1.5rem 1rem;
      font-size: 0.9rem;
      color: #777;
      border-top: 1px solid #ddd;
      margin-top: 3rem;
    }
    footer a {
      color: var(--accent-color);
      text-decoration: none;
    }
    .screenshot {
      max-width: 100%;
      border: 1px solid #ddd;
      border-radius: 4px;
      margin: 1rem 0;
    }