:root {
      --primary: #0f172a;
      --secondary: #2563eb;
      --text: #1f2933;
      --muted: #6b7280;
      --bg: #f9fafb;
      --card: #ffffff;
      --border: #e5e7eb;
    }

    * {
      box-sizing: border-box;
    }

    body {
      margin: 0;
      font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Inter, Helvetica, Arial, sans-serif;
      background: var(--bg);
      color: var(--text);
      line-height: 1.7;
      display: flex;
      flex-direction: column;
      align-items: center;
    }

    ol, ul{
        margin: 1.5rem 0;
        padding-left: 20px;
    }

    ul {
      list-style: disc !important;
    }
    li {
      display: list-item;
    }


    .banner {
      width: 100%;
      color: var(---colorOnSecondary);
      padding: 2.5rem 1.5rem;
      margin: 20px;
      margin-top: calc(var(--header-height) + 4rem);
      max-width: 1100px;
    }

    .banner h1 {
      margin: 0 0 0.5rem 0;
      font-size: 20px;
    }

    h3{
      margin-top: 1.5rem;
    }

    .banner p {
      margin: 0;
      color: var(---textColor);
      font-size: 0.95rem;
    }

    main {
      max-width: 1100px;
      margin: 0 auto;
      padding: 14px;
      display: grid;
      grid-template-columns: 280px 1fr;
      gap: 2rem;
    }

    nav {
      background: var(--card);
      border: 1px solid var(--border);
      border-radius: 14px;
      padding: 1.25rem;
      position: sticky;
      top: 1.5rem;
      height: fit-content;
    }

    nav h2 {
      font-size: 0.9rem;
      text-transform: uppercase;
      letter-spacing: 0.05em;
      color: var(--muted);
      margin: 0 0 0.75rem 0;
    }

    nav ul {
      list-style: none;
      padding: 0;
      margin: 0;
    }

    nav li {
      margin-bottom: 0.5rem;
    }

    nav a {
      text-decoration: none;
      font-size: 0.9rem;
      color: var(--secondary);
    }

    nav a:hover {
      text-decoration: underline;
    }

    section {
      background: var(--card);
      border: 1px solid var(--border);
      border-radius: 16px;
      padding: 2rem;
      margin-bottom: 1.5rem;
    }

    section h2 {
      margin-top: 0;
      font-size: 1.4rem;
      color: var(--primary);
    }

    section h3 {
      margin-bottom: 0.25rem;
      font-size: 1.05rem;
      color: var(--primary);
    }

    ul {
      padding-left: 1.25rem;
    }

    footer {
      border-top: 1px solid var(--border);
      padding: 2rem 1.5rem;
      text-align: center;
      color: var(--muted);
      font-size: 0.85rem;
      background: #fff;
    }

    @media (max-width: 900px) {
      main {
        grid-template-columns: 1fr;
        padding: 2rem 1.5rem 4rem;
      }

      nav {
        position: relative;
        top: 0;
      }
    }