body {
      margin: 0;
      padding: 0;
      background: #eef2ff;
      color: #1d2939;
      font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
      line-height: 1.6;
    }

    header {
      background: #4f46e5;
      color: #fff;
      padding: 1.5rem 2rem;
      text-align: center;
    }

    nav {
      background: #eef1ff;
      padding: 1rem 2rem;
      margin-bottom: 1rem;
    }

    nav ul {
      list-style: none;
      padding: 0;
      margin: 0;
      display: flex;
      gap: 1rem;
      justify-content: center;
    }

    nav a {
      color: #3730a3;
      text-decoration: none;
      font-weight: 600;
    }

    section {
      display: grid;
      grid-template-columns: 2fr 1fr;
      gap: 1rem;
      padding: 0 2rem 2rem;
    }

    article {
      background: #ffffff;
      border-radius: 12px;
      padding: 1.5rem;
      box-shadow: 0 2px 10px rgba(15, 23, 42, 0.08);
    }

    article h2 {
      margin-top: 0;
    }

    .card {
      background: #f8fafc;
      border-left: 4px solid #4338ca;
      padding: 1rem;
      margin-bottom: 1rem;
    }

    aside {
      background: #ffffff;
      border-radius: 12px;
      padding: 1.5rem;
      box-shadow: 0 2px 10px rgba(15, 23, 42, 0.08);
    }

    aside h3 {
      margin-top: 0;
    }

    footer {
      background: #1e293b;
      color: #e2e8f0;
      padding: 1rem 2rem;
      text-align: center;
    }

    #main-header {
      font-size: 2rem;
      letter-spacing: 0.04em;
    }

    .small-text {
      color: #6b7280;
      font-size: 0.95rem;
    }