.seo-article {
      max-width: 920px;
      margin: 0 auto;
      padding: 24px 16px;
      font-family: Arial, sans-serif;
      color: #222;
      line-height: 1.75;
      font-size: 16px;
    }

    .seo-article h1 {
      font-size: 34px;
      line-height: 1.25;
      margin: 0 0 18px;
      color: #111;
      font-weight: 700;
    }

    .seo-article h2 {
      font-size: 26px;
      line-height: 1.35;
      margin: 36px 0 14px;
      color: #111;
      font-weight: 700;
    }

    .seo-article h3 {
      font-size: 21px;
      line-height: 1.4;
      margin: 26px 0 10px;
      color: #222;
      font-weight: 700;
    }

    .seo-article p {
      margin: 0 0 16px;
    }

    .seo-article a {
      color: #1f5fbf;
      text-decoration: none;
      font-weight: 600;
    }

    .seo-article a:hover {
      text-decoration: underline;
    }

    .seo-article ol,
    .seo-article ul {
      margin: 0 0 18px 22px;
      padding: 0;
    }

    .seo-article li {
      margin-bottom: 8px;
    }

    .seo-article table {
      width: 100%;
      border-collapse: collapse;
      margin: 18px 0 24px;
      font-size: 15px;
    }

    .seo-article th,
    .seo-article td {
      border: 1px solid #ddd;
      padding: 12px;
      text-align: left;
      vertical-align: top;
    }

    .seo-article th {
      background: #f5f7fa;
      font-weight: 700;
      color: #111;
    }

    .quick-answer {
      background: #f5f7fa;
      border-left: 4px solid #1f5fbf;
      padding: 18px 20px;
      margin: 22px 0;
    }

    .toc {
      background: #fafafa;
      border: 1px solid #e5e5e5;
      padding: 18px 20px;
      margin: 24px 0;
    }

    .toc-title {
      font-size: 18px;
      font-weight: 700;
      margin-bottom: 10px;
    }

    .cta-box {
      background: #0f172a;
      color: #fff;
      padding: 24px;
      margin: 32px 0;
      border-radius: 6px;
    }

    .cta-box h2,
    .cta-box h3 {
      color: #fff;
      margin-top: 0;
    }

    .cta-box p {
      color: #e5e7eb;
    }

    .cta-button {
      display: inline-block;
      margin-top: 8px;
      padding: 11px 18px;
      background: #ffffff;
      color: #0f172a !important;
      text-decoration: none;
      border-radius: 4px;
      font-weight: 700;
    }

    .note {
      font-size: 15px;
      color: #555;
      background: #fff8e6;
      border-left: 4px solid #e0a100;
      padding: 14px 16px;
      margin: 20px 0;
    }

    @media (max-width: 640px) {
      .seo-article {
        font-size: 15px;
      }

      .seo-article h1 {
        font-size: 28px;
      }

      .seo-article h2 {
        font-size: 23px;
      }

      .seo-article h3 {
        font-size: 19px;
      }

      .seo-article table {
        display: block;
        overflow-x: auto;
        white-space: nowrap;
      }
    }