:root {
      --blue: #0b7fd3;
      --deep: #06385f;
      --text: #182230;
      --muted: #667085;
      --line: #d9e8f5;
      --bg: #f6faff;
      --soft: #eef7ff;
      --white: #ffffff;
    }

    * {
      box-sizing: border-box;
    }

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

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

    a:hover {
      text-decoration: underline;
    }

    img {
      display: block;
      max-width: 100%;
      height: auto;
    }

    .page {
      max-width: 1180px;
      margin: 0 auto;
      padding: 0 20px;
    }

    .hero {
      padding: 70px 0 46px;
      border-bottom: 1px solid var(--line);
    }

    .hero-layout {
      display: grid;
      grid-template-columns: 1.08fr 0.92fr;
      gap: 44px;
      align-items: center;
    }

    .label {
      color: var(--blue);
      font-size: 13px;
      font-weight: 800;
      text-transform: uppercase;
      letter-spacing: 1.5px;
      margin-bottom: 14px;
    }

    h1 {
      font-size: clamp(36px, 5vw, 58px);
      line-height: 1.08;
      color: var(--deep);
      margin: 0 0 20px;
      letter-spacing: -1.4px;
    }

    .hero-text {
      font-size: 19px;
      color: var(--muted);
      margin: 0 0 26px;
      max-width: 760px;
    }

    .hero-note {
      background: var(--white);
      border-left: 5px solid var(--blue);
      border-radius: 16px;
      padding: 20px 22px;
      box-shadow: 0 12px 34px rgba(6, 56, 95, 0.07);
      color: var(--text);
    }

    .image-card {
      background: var(--white);
      border: 1px solid var(--line);
      border-radius: 26px;
      padding: 12px;
      box-shadow: 0 16px 46px rgba(6, 56, 95, 0.08);
    }

    .ratio-4-3 {
      aspect-ratio: 4 / 3;
      overflow: hidden;
      border-radius: 20px;
      background: var(--soft);
    }

    .ratio-4-3 img {
      width: 100%;
      height: 100%;
      object-fit: cover;
    }

    .article-wrap {
      display: grid;
      grid-template-columns: 250px minmax(0, 1fr);
      gap: 38px;
      padding: 48px 0 80px;
    }

    .toc {
      position: sticky;
      top: 24px;
      align-self: start;
      background: var(--white);
      border: 1px solid var(--line);
      border-radius: 20px;
      padding: 20px;
    }

    .toc-title {
      font-size: 13px;
      text-transform: uppercase;
      letter-spacing: 1.2px;
      color: var(--muted);
      font-weight: 800;
      margin-bottom: 12px;
    }

    .toc a {
      display: block;
      color: var(--text);
      font-size: 15px;
      padding: 9px 0;
      border-top: 1px solid #edf4fb;
      font-weight: 700;
    }

    .article {
      background: var(--white);
      border: 1px solid var(--line);
      border-radius: 28px;
      padding: clamp(28px, 5vw, 56px);
      box-shadow: 0 16px 48px rgba(6, 56, 95, 0.06);
    }

    section {
      padding: 34px 0;
      border-bottom: 1px solid #edf4fb;
    }

    section:first-child {
      padding-top: 0;
    }

    section:last-child {
      border-bottom: none;
      padding-bottom: 0;
    }

    h2 {
      font-size: clamp(26px, 4vw, 40px);
      line-height: 1.22;
      color: var(--deep);
      margin: 0 0 18px;
      letter-spacing: -0.6px;
    }

    h3 {
      color: var(--deep);
      font-size: 21px;
      margin: 26px 0 10px;
    }

    p {
      margin: 0 0 18px;
    }

    .quick-answer {
      background: #eef7ff;
      border: 1px solid var(--line);
      border-left: 5px solid var(--blue);
      border-radius: 18px;
      padding: 24px;
      margin: 24px 0 0;
    }

    .simple-list {
      padding-left: 20px;
      margin: 18px 0 0;
    }

    .simple-list li {
      margin-bottom: 10px;
    }

    .table-wrap {
      overflow-x: auto;
      border: 1px solid var(--line);
      border-radius: 18px;
      margin-top: 24px;
    }

    table {
      width: 100%;
      border-collapse: collapse;
      min-width: 720px;
    }

    th {
      background: var(--deep);
      color: #ffffff;
      padding: 15px;
      text-align: left;
      font-size: 14px;
    }

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

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

    tr:nth-child(even) td {
      background: #f8fcff;
    }

    .quote {
      font-size: 22px;
      line-height: 1.5;
      color: var(--deep);
      font-weight: 800;
      border-left: 5px solid var(--blue);
      padding: 20px 0 20px 24px;
      margin: 28px 0;
    }

    .product-block {
      background: linear-gradient(135deg, #eef7ff, #ffffff);
      border: 1px solid var(--line);
      border-radius: 24px;
      padding: 30px;
      margin-top: 24px;
    }

    .cta {
      background: var(--deep);
      color: #ffffff;
      border-radius: 24px;
      padding: 34px;
      margin-top: 28px;
    }

    .cta h2,
    .cta p {
      color: #ffffff;
    }

    .cta a {
      display: inline-block;
      background: #ffffff;
      color: var(--deep);
      padding: 13px 22px;
      border-radius: 999px;
      margin-top: 12px;
      font-weight: 800;
    }

    .faq-item {
      padding: 20px 0;
      border-top: 1px solid #edf4fb;
    }

    .faq-item h3 {
      margin-top: 0;
      font-size: 19px;
    }

    .footer {
      text-align: center;
      padding: 36px 20px;
      background: #06233b;
      color: #d9efff;
      font-size: 14px;
    }

    .footer a {
      color: #ffffff;
    }

    @media (max-width: 900px) {
      .hero-layout,
      .article-wrap {
        grid-template-columns: 1fr;
      }

      .toc {
        position: static;
      }

      .hero {
        padding: 46px 0 34px;
      }
    }