body {
      margin: 0;
      padding: 0;
      font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
      background: #f8f9fb;
      color: #222;
      line-height: 1.8;
    }

    .container {
      max-width: 900px;
      margin: 0 auto;
      padding: 40px 20px 80px;
      background: #fff;
      min-height: 100vh;
    }

    h1 {
      font-size: 32px;
      margin-bottom: 30px;
      border-bottom: 3px solid #4f46e5;
      padding-bottom: 10px;
    }

    h2 {
      font-size: 22px;
      margin-top: 40px;
      margin-bottom: 10px;
      color: #111827;
    }

    p, li {
      font-size: 16px;
      color: #374151;
    }

    ul {
      padding-left: 20px;
    }

    .date {
      margin-top: 50px;
      font-size: 14px;
      color: #6b7280;
    }

    a {
      color: #4f46e5;
      text-decoration: none;
    }

    a:hover {
      text-decoration: underline;
    }

    .box {
      background: #f9fafb;
      border: 1px solid #e5e7eb;
      padding: 18px;
      border-radius: 10px;
      margin-top: 15px;
    }

    @media (max-width: 600px) {
      h1 {
        font-size: 26px;
      }

      h2 {
        font-size: 20px;
      }

      .container {
        padding: 25px 16px 60px;
      }
    }