.tps-article {
      font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
      line-height: 1.7;
      color: #222;
      max-width: 920px;
      margin: 0 auto;
      font-size: 16px;
    }
    .tps-article h1 {
      font-size: 2rem;
      margin: 0 0 0.75rem;
      color: #111;
    }
    .tps-article h2 {
      font-size: 1.35rem;
      margin: 2.5rem 0 0.75rem;
      color: #111;
    }
    .tps-article h3 {
      font-size: 1.05rem;
      margin: 1.5rem 0 0.5rem;
      color: #111;
    }
    .tps-article p {
      margin: 0 0 1rem;
    }
    .tps-article a {
      color: #3598db;
      text-decoration: none;
    }
    .tps-article a:hover,
    .tps-article a:focus {
      text-decoration: underline;
    }

    /* TOC */
    .tps-toc {
      border-radius: 12px;
      border: 1px solid #d9e6f2;
      background: #f6fbff;
      padding: 1rem 1.25rem;
      margin: 1.5rem 0 2rem;
      font-size: 0.95rem;
    }
    .tps-toc-title {
      font-weight: 600;
      margin-bottom: 0.5rem;
      color: #222;
    }
    .tps-toc ul {
      padding-left: 1.1rem;
      margin: 0;
      list-style: disc;
    }
    .tps-toc li {
      margin: 0.15rem 0;
    }

    /* SVG figure */
    figure.tps-figure {
      margin: 2rem 0;
      padding: 1.25rem 1.5rem;
      border-radius: 16px;
      border: 1px solid #e1ecf7;
      background: linear-gradient(135deg, #f5faff, #ffffff);
    }
    figure.tps-figure svg {
      max-width: 100%;
      height: auto;
      display: block;
      margin: 0 auto 0.75rem;
    }
    figure.tps-figure figcaption {
      font-size: 0.9rem;
      color: #444;
      text-align: center;
    }

    /* Lists */
    .tps-article ul {
      padding-left: 1.2rem;
      margin: 0 0 1rem;
    }

    /* CTA */
    .tps-cta {
      margin: 2.5rem 0 2rem;
      padding: 1.75rem 1.5rem;
      border-radius: 16px;
      background: #f0f7ff;
      border: 1px solid #d3e4ff;
      display: flex;
      flex-wrap: wrap;
      gap: 1rem;
      align-items: center;
      justify-content: space-between;
    }
    .tps-cta-text {
      flex: 1 1 220px;
      min-width: 0;
    }
    .tps-cta-buttons {
      display: flex;
      flex-wrap: wrap;
      gap: 0.75rem;
    }
    .tps-btn {
      display: inline-block;
      padding: 0.6rem 1.1rem;
      border-radius: 999px;
      border: 1px solid #3598db;
      font-size: 0.95rem;
      font-weight: 500;
      text-align: center;
      cursor: pointer;
      transition: background 0.18s ease, color 0.18s ease, box-shadow 0.18s ease;
      white-space: nowrap;
    }
    .tps-btn-primary {
      background: #3598db;
      color: #fff;
      box-shadow: 0 4px 10px rgba(53,152,219,0.25);
    }
    .tps-btn-primary:hover,
    .tps-btn-primary:focus {
      background: #2879b9;
      border-color: #2879b9;
    }
    .tps-btn-outline {
      background: #fff;
      color: #3598db;
    }
    .tps-btn-outline:hover,
    .tps-btn-outline:focus {
      background: #e9f3ff;
    }

    /* FAQ */
    .tps-faq details {
      border-radius: 10px;
      border: 1px solid #e1ecf7;
      padding: 0.75rem 0.9rem;
      margin-bottom: 0.75rem;
      background: #fff;
    }
    .tps-faq summary {
      cursor: pointer;
      font-weight: 600;
      list-style: none;
    }
    .tps-faq summary::-webkit-details-marker {
      display: none;
    }
    .tps-faq summary::before {
      content: "▸";
      display: inline-block;
      margin-right: 0.4rem;
      color: #3598db;
      transition: transform 0.18s ease;
    }
    .tps-faq details[open] summary::before {
      transform: rotate(90deg);
    }

    /* Share list */
    .tps-share {
      margin: 2.5rem 0 1rem;
      font-size: 0.9rem;
      color: #555;
    }
    .tps-share-list {
      display: flex;
      gap: 0.75rem;
      padding-left: 0;
      list-style: none;
      margin: 0.5rem 0 0;
      flex-wrap: wrap;
    }
    .tps-share-list a {
      font-size: 0.9rem;
    }

    @media (max-width: 720px) {
      .tps-cta {
        flex-direction: column;
        align-items: flex-start;
      }
      .tps-cta-buttons {
        width: 100%;
      }
      .tps-cta-buttons .tps-btn {
        flex: 1 1 auto;
        text-align: center;
      }
    }