:root {
      --primary: #0b607c;
      --primary-dark: #063f56;
      --primary-light: #e9f6f9;
      --secondary: #f6fbfc;
      --border: #d8e9ed;
      --text: #26383f;
      --muted: #647780;
      --white: #ffffff;
    }

    * {
      box-sizing: border-box;
    }

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

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

    .blog-container {
      width: 100%;
      max-width: 1180px;
      margin: 0 auto;
      padding: 25px 22px 80px;
    }

    .blog-hero {
      padding: 62px 50px;
      border: 1px solid var(--border);
      border-radius: 24px;
      background:
        linear-gradient(
          135deg,
          #edf8fa 0%,
          #ffffff 58%,
          #e8f5f8 100%
        );
    }

    .category-label {
      display: inline-block;
      margin-bottom: 20px;
      padding: 7px 15px;
      border-radius: 30px;
      background: #dceff4;
      color: var(--primary-dark);
      font-size: 13px;
      font-weight: 700;
      letter-spacing: .04em;
      text-transform: uppercase;
    }

    h1 {
      max-width: 940px;
      margin: 0 0 22px;
      color: var(--primary-dark);
      font-size: clamp(34px, 5vw, 55px);
      line-height: 1.12;
    }

    .hero-intro {
      max-width: 880px;
      margin: 0;
      color: #40575f;
      font-size: 19px;
    }

    .article-content {
      max-width: 920px;
      margin: 55px auto 0;
    }

    h2 {
      margin: 52px 0 18px;
      color: var(--primary-dark);
      font-size: 31px;
      line-height: 1.3;
    }

    h3 {
      margin: 30px 0 12px;
      color: var(--primary);
      font-size: 21px;
      line-height: 1.35;
    }

    p {
      margin: 0 0 19px;
      font-size: 17px;
    }

    a {
      color: var(--primary);
      font-weight: 700;
      text-decoration: underline;
      text-underline-offset: 3px;
    }

    /* =========================
       IMAGES
       ========================= */

    .article-image {
      margin: 38px 0;
    }

    .article-image img {
      display: block;
      width: 100%;
      border-radius: 18px;
      background: #f4f8f9;
      object-fit: cover;
    }

    .article-image figcaption {
      margin-top: 10px;
      color: var(--muted);
      font-size: 14px;
      line-height: 1.55;
      text-align: center;
    }

    .image-1200-800 img {
      aspect-ratio: 3 / 2;
    }

    .image-1000-750 img {
      aspect-ratio: 4 / 3;
    }

    .image-1200-900 img {
      aspect-ratio: 4 / 3;
    }

    /* =========================
       QUICK ANSWER
       ========================= */

    .quick-answer {
      margin: 35px 0;
      padding: 29px 31px;
      border-left: 5px solid var(--primary);
      border-radius: 12px;
      background: var(--primary-light);
    }

    .quick-answer strong {
      color: var(--primary-dark);
    }

    .quick-answer p:last-child {
      margin-bottom: 0;
    }

    /* =========================
       CARDS
       ========================= */

    .info-grid {
      display: grid;
      grid-template-columns: repeat(2, 1fr);
      gap: 18px;
      margin: 30px 0;
    }

    .info-card {
      padding: 26px;
      border: 1px solid var(--border);
      border-radius: 15px;
      background: #ffffff;
    }

    .info-card h3 {
      margin-top: 0;
      margin-bottom: 10px;
      font-size: 19px;
    }

    .info-card p {
      margin-bottom: 0;
      font-size: 16px;
    }

    /* =========================
       CHECK LIST
       ========================= */

    .check-list {
      margin: 25px 0;
      padding: 0;
      list-style: none;
    }

    .check-list li {
      position: relative;
      margin-bottom: 13px;
      padding-left: 31px;
      font-size: 17px;
    }

    .check-list li::before {
      content: "✓";
      position: absolute;
      top: 0;
      left: 0;
      color: var(--primary);
      font-weight: 800;
    }

    /* =========================
       TABLES
       ========================= */

    .table-wrapper {
      margin: 31px 0;
      overflow-x: auto;
      border: 1px solid var(--border);
      border-radius: 15px;
    }

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

    th,
    td {
      padding: 18px;
      border-bottom: 1px solid var(--border);
      text-align: left;
      vertical-align: top;
      font-size: 16px;
    }

    th {
      background: #edf7f9;
      color: var(--primary-dark);
      font-weight: 700;
    }

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

    /* =========================
       COMPARISON BOX
       ========================= */

    .comparison-box {
      margin: 35px 0;
      padding: 30px;
      border: 1px solid var(--border);
      border-radius: 16px;
      background: #f7fbfc;
    }

    .comparison-box strong {
      color: var(--primary-dark);
      font-size: 18px;
    }

    /* =========================
       PRODUCT BOX
       ========================= */

    .product-feature {
      display: grid;
      grid-template-columns: 1fr 1.1fr;
      gap: 30px;
      align-items: center;
      margin: 48px 0;
      padding: 30px;
      border: 1px solid var(--border);
      border-radius: 20px;
      background: #f8fcfd;
    }

    .product-feature img {
      width: 100%;
      border-radius: 15px;
      background: #ffffff;
    }

    .product-feature h2 {
      margin-top: 0;
      margin-bottom: 15px;
    }

    /* =========================
       CTA
       ========================= */

    .cta-section {
      margin: 58px 0;
      padding: 44px 40px;
      border-radius: 22px;
      background:
        linear-gradient(
          135deg,
          #06465e,
          #0b7898
        );
      color: #ffffff;
    }

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

    .cta-section p {
      color: #edf9fb;
    }

    .cta-button {
      display: inline-block;
      margin-top: 8px;
      padding: 14px 24px;
      border-radius: 9px;
      background: #ffffff;
      color: #07536d;
      font-weight: 700;
      text-decoration: none;
    }

    .cta-button:hover {
      opacity: .92;
    }

    /* =========================
       FAQ
       ========================= */

    .faq-section {
      margin-top: 50px;
    }

    .faq-item {
      margin-bottom: 14px;
      padding: 24px 26px;
      border: 1px solid var(--border);
      border-radius: 14px;
      background: #ffffff;
    }

    .faq-item h3 {
      margin: 0 0 10px;
      color: var(--primary-dark);
      font-size: 19px;
    }

    .faq-item p {
      margin: 0;
      font-size: 16px;
    }

    /* =========================
       SOURCES
       ========================= */

    .reference-box {
      margin-top: 52px;
      padding: 27px;
      border-radius: 15px;
      background: #f6f9fa;
      color: var(--muted);
    }

    .reference-box h2 {
      margin-top: 0;
      font-size: 21px;
    }

    .reference-box p,
    .reference-box li {
      font-size: 14px;
    }

    /* =========================
       MOBILE
       ========================= */

    @media (max-width: 760px) {
      .blog-container {
        padding: 15px 16px 60px;
      }

      .blog-hero {
        padding: 42px 25px;
      }

      .article-content {
        margin-top: 38px;
      }

      h2 {
        font-size: 27px;
      }

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

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

      .cta-section {
        padding: 32px 25px;
      }

      th,
      td {
        padding: 15px;
      }
    }