* {
      box-sizing: border-box;
    }
    body {
      margin: 0;
      padding: 0;
      font-family: Arial, Helvetica, sans-serif;
      color: #1f2d3d;
      background: #f5f8fc;
      line-height: 1.75;
    }
    .container {
      max-width: 980px;
      margin: 0 auto;
      background: #ffffff;
      padding: 24px;
    }
    .hero {
      background: linear-gradient(135deg, #e9f4ff 0%, #f8fbff 100%);
      border: 1px solid #dbe9f6;
      border-radius: 18px;
      padding: 36px 24px;
      margin-bottom: 28px;
    }
    .hero h1 {
      margin: 0 0 14px;
      font-size: 34px;
      line-height: 1.25;
      color: #12385f;
    }
    .hero p {
      margin: 0;
      font-size: 17px;
      color: #44576b;
    }
    .hero-image {
      margin: 24px 0 0;
      width: 100%;
      border-radius: 14px;
      overflow: hidden;
      border: 1px solid #dbe9f6;
      background: #eef5fb;
    }
    .hero-image img {
      width: 100%;
      height: auto;
      display: block;
      aspect-ratio: 3 / 2;
      object-fit: cover;
    }
    .toc {
      background: #f8fbfe;
      border: 1px solid #dbe9f6;
      border-radius: 14px;
      padding: 22px;
      margin: 0 0 30px;
    }
    .toc h2 {
      margin-top: 0;
      font-size: 20px;
      color: #12385f;
    }
    .toc ul {
      margin: 0;
      padding-left: 18px;
    }
    .toc li {
      margin-bottom: 8px;
    }
    .toc a {
      color: #1d5f95;
      text-decoration: none;
    }
    h2 {
      font-size: 28px;
      margin: 34px 0 14px;
      color: #12385f;
    }
    h3 {
      font-size: 22px;
      margin: 28px 0 12px;
      color: #1b486f;
    }
    p {
      margin: 0 0 16px;
      font-size: 16px;
    }
    ul, ol {
      padding-left: 22px;
      margin: 0 0 18px;
    }
    li {
      margin-bottom: 10px;
      font-size: 16px;
    }
    .highlight {
      background: #eef7ff;
      border-left: 4px solid #4e95d9;
      padding: 16px 18px;
      border-radius: 10px;
      margin: 22px 0;
    }
    .section-image {
      margin: 20px 0 24px;
      width: 100%;
      border-radius: 14px;
      overflow: hidden;
      border: 1px solid #dbe9f6;
      background: #eef5fb;
    }
    .section-image img {
      width: 100%;
      height: auto;
      display: block;
      aspect-ratio: 16 / 9;
      object-fit: cover;
    }
    .table-wrap {
      overflow-x: auto;
      margin: 22px 0;
    }
    table {
      width: 100%;
      border-collapse: collapse;
      min-width: 680px;
      background: #fff;
      border: 1px solid #dbe9f6;
    }
    th, td {
      border: 1px solid #dbe9f6;
      padding: 14px 12px;
      text-align: left;
      vertical-align: top;
      font-size: 15px;
    }
    th {
      background: #eef5fb;
      color: #12385f;
    }
    .cta {
      margin-top: 36px;
      background: linear-gradient(135deg, #dff0ff 0%, #f4faff 100%);
      border: 1px solid #cbe2f7;
      border-radius: 18px;
      padding: 28px 24px;
      text-align: center;
    }
    .cta h2 {
      margin-top: 0;
      font-size: 28px;
    }
    .cta a {
      display: inline-block;
      margin-top: 10px;
      background: #1d5f95;
      color: #fff;
      text-decoration: none;
      padding: 14px 24px;
      border-radius: 999px;
      font-weight: bold;
    }
    .faq-item {
      border: 1px solid #dbe9f6;
      border-radius: 12px;
      padding: 18px;
      margin-bottom: 14px;
      background: #fbfdff;
    }
    .faq-item h3 {
      margin-top: 0;
      font-size: 18px;
    }
    .footer-note {
      margin-top: 28px;
      padding-top: 18px;
      border-top: 1px solid #dbe9f6;
      font-size: 14px;
      color: #6a7f92;
    }
    @media (max-width: 768px) {
      .container {
        padding: 16px;
      }
      .hero {
        padding: 24px 18px;
      }
      .hero h1 {
        font-size: 28px;
      }
      h2 {
        font-size: 24px;
      }
      h3 {
        font-size: 20px;
      }
      p, li {
        font-size: 15px;
      }
      .cta h2 {
        font-size: 24px;
      }
    }