:root {
      --primary: #0b75bb;
      --secondary: #eaf6ff;
      --dark: #123044;
      --text: #334155;
      --light: #f8fbff;
      --border: #dbeafe;
      --white: #ffffff;
    }

    body {
      margin: 0;
      font-family: Arial, Helvetica, sans-serif;
      color: var(--text);
      background: #ffffff;
      line-height: 1.75;
    }

    .blog-container {
      max-width: 1120px;
      margin: 0 auto;
      padding: 24px;
    }

    .hero {
      background: linear-gradient(135deg, #eef8ff 0%, #ffffff 55%, #eaf6ff 100%);
      border-radius: 26px;
      padding: 56px 36px;
      margin: 24px 0 36px;
      border: 1px solid var(--border);
    }

    .hero-label {
      display: inline-block;
      background: var(--primary);
      color: #ffffff;
      padding: 7px 14px;
      border-radius: 999px;
      font-size: 14px;
      font-weight: 700;
      margin-bottom: 18px;
    }

    h1 {
      color: var(--dark);
      font-size: 42px;
      line-height: 1.18;
      margin: 0 0 18px;
      letter-spacing: -0.5px;
    }

    h2 {
      color: var(--dark);
      font-size: 30px;
      line-height: 1.25;
      margin-top: 48px;
      margin-bottom: 16px;
    }

    h3 {
      color: var(--dark);
      font-size: 22px;
      margin-top: 32px;
      margin-bottom: 10px;
    }

    p {
      font-size: 17px;
      margin: 0 0 18px;
    }

    a {
      color: var(--primary);
      font-weight: 700;
      text-decoration: none;
    }

    a:hover {
      text-decoration: underline;
    }

    .summary-box {
      background: var(--light);
      border: 1px solid var(--border);
      border-left: 5px solid var(--primary);
      padding: 24px;
      border-radius: 18px;
      margin: 28px 0;
    }

    .toc {
      background: #ffffff;
      border: 1px solid var(--border);
      border-radius: 18px;
      padding: 24px;
      margin: 32px 0;
    }

    .toc ul {
      margin: 0;
      padding-left: 20px;
    }

    .toc li {
      margin: 8px 0;
      font-size: 16px;
    }

    .table-wrap {
      width: 100%;
      overflow-x: auto;
      margin: 26px 0;
      border-radius: 18px;
      border: 1px solid var(--border);
    }

    table {
      width: 100%;
      border-collapse: collapse;
      min-width: 760px;
      background: #ffffff;
    }

    th {
      background: var(--secondary);
      color: var(--dark);
      text-align: left;
      padding: 16px;
      font-size: 15px;
      border-bottom: 1px solid var(--border);
    }

    td {
      padding: 16px;
      border-bottom: 1px solid var(--border);
      vertical-align: top;
      font-size: 15px;
    }

    tr:last-child td {
      border-bottom: none;
    }

    .grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 18px;
      margin: 28px 0;
    }

    .card {
      background: #ffffff;
      border: 1px solid var(--border);
      border-radius: 20px;
      padding: 22px;
      box-shadow: 0 10px 30px rgba(15, 82, 135, 0.06);
    }

    .card h3 {
      margin-top: 0;
      color: var(--primary);
      font-size: 20px;
    }

    .cta {
      background: linear-gradient(135deg, #0b75bb 0%, #0f9ad6 100%);
      color: #ffffff;
      padding: 34px;
      border-radius: 24px;
      margin: 48px 0;
    }

    .cta h2 {
      color: #ffffff;
      margin-top: 0;
    }

    .cta p {
      color: #eef8ff;
    }

    .cta a {
      display: inline-block;
      background: #ffffff;
      color: var(--primary);
      padding: 13px 22px;
      border-radius: 999px;
      margin-top: 10px;
      font-weight: 800;
    }

    .faq-item {
      border: 1px solid var(--border);
      border-radius: 18px;
      padding: 22px;
      margin-bottom: 16px;
      background: #ffffff;
    }

    .faq-item h3 {
      margin-top: 0;
      font-size: 20px;
    }

    .note {
      font-size: 15px;
      color: #64748b;
      background: #f8fafc;
      padding: 18px;
      border-radius: 16px;
      border: 1px solid #e2e8f0;
    }

    .author-box {
      display: flex;
      gap: 18px;
      align-items: center;
      background: #f8fbff;
      border: 1px solid var(--border);
      border-radius: 20px;
      padding: 22px;
      margin-top: 42px;
    }

    .author-avatar {
      width: 56px;
      height: 56px;
      border-radius: 50%;
      background: var(--primary);
      color: #ffffff;
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: 800;
      flex-shrink: 0;
    }

    @media (max-width: 768px) {
      .blog-container {
        padding: 16px;
      }

      .hero {
        padding: 36px 22px;
      }

      h1 {
        font-size: 32px;
      }

      h2 {
        font-size: 25px;
      }

      .grid {
        grid-template-columns: 1fr;
      }

      p {
        font-size: 16px;
      }

      .cta {
        padding: 26px 22px;
      }
    }