body {
      font-family: 'Inter', system-ui, -apple-system, Roboto, sans-serif;
      background-color: #f9fafb;
      color: #1e293b;
      margin: 0;
      padding: 0;
      line-height: 1.75;
    }
    header {
      background: linear-gradient(90deg, #2563eb, #3b82f6);
      color: white;
      padding: 50px 20px;
      text-align: center;
    }
    header h1 {
      font-size: 2.3rem;
      margin-bottom: 10px;
    }
    header p {
      opacity: 0.95;
      max-width: 600px;
      margin: 0 auto;
      font-size: 1.05rem;
    }
    main {
      max-width: 960px;
      background: #ffffff;
      margin: 40px auto;
      padding: 42px 28px;
      border-radius: 12px;
      box-shadow: 0 4px 30px rgba(0, 0, 0, 0.05);
    }
    h2 {
      color: #2563eb;
      margin-top: 36px;
    }
    p {
      margin-top: 16px;
    }
    ul {
      margin-top: 12px;
      padding-left: 25px;
    }
    ul li {
      margin-bottom: 10px;
    }
    footer {
      background: #0f172a;
      color: #e2e8f0;
      padding: 32px 10px;
      text-align: center;
      font-size: 0.9rem;
    }
    footer a {
      color: #3b82f6;
      text-decoration: none;
    }
    footer a:hover {
      text-decoration: underline;
    }