* { box-sizing: border-box; }
    html { scroll-behavior: smooth; }
    body {
      margin: 0;
      background: #ffffff;
      color: #2a2a2a;
      font-family: "Helvetica Neue", Helvetica, Arial, sans-serif;
      line-height: 1.85;
      -webkit-font-smoothing: antialiased;
    }
    .sda-compare-shell { max-width: 860px; margin: auto; padding: 60px 24px 100px; }
    .sda-compare-header { text-align: center; margin-bottom: 44px; }
    .sda-compare-title {
      font-size: clamp(30px, 4.8vw, 46px);
      font-weight: 800;
      line-height: 1.25;
      color: #111111;
      margin: 0 0 18px;
    }
    .sda-compare-subtitle { max-width: 680px; margin: auto; font-size: 18px; color: #666666; }
    .sda-compare-toc { background: #f7f6f4; padding: 28px 30px; border-radius: 12px; margin-bottom: 56px; }
    .sda-compare-toc-title, .sda-compare-eyebrow {
      font-size: 13px;
      font-weight: 700;
      letter-spacing: .12em;
      text-transform: uppercase;
      color: #d9531e;
    }
    .sda-compare-toc-title { margin: 0 0 16px; }
    .sda-compare-toc ol { columns: 2; column-gap: 32px; margin: 0; padding-left: 20px; }
    .sda-compare-toc li { break-inside: avoid; font-size: 15px; margin-bottom: 10px; }
    a { color: #b44015; text-underline-offset: 4px; }
    a:hover { color: #802d0f; }
    .sda-compare-toc a { color: #333333; text-decoration: none; }
    .sda-compare-toc a:hover { color: #b44015; text-decoration: underline; }
    a:focus-visible, summary:focus-visible { outline: 3px solid #d9531e; outline-offset: 5px; }
    .sda-compare-row { margin-bottom: 56px; scroll-margin-top: 24px; }
    .sda-compare-eyebrow { display: inline-block; margin-bottom: 10px; }
    .sda-compare-h2 { font-size: clamp(24px, 3.2vw, 32px); line-height: 1.3; color: #111111; margin: 0 0 18px; }
    .sda-compare-h3 { font-size: 19px; line-height: 1.45; margin: 26px 0 12px; color: #111111; }
    .sda-compare-text { font-size: clamp(17px, 2.1vw, 20px); color: #555555; margin: 0 0 16px; }
    .sda-compare-row ul { list-style: none; margin: 0 0 18px; padding: 0; }
    .sda-compare-row ul li { position: relative; padding-left: 24px; margin-bottom: 10px; color: #555555; font-size: 17px; }
    .sda-compare-row ul li::before { content: "—"; position: absolute; left: 0; color: #d9531e; font-weight: 700; }
    .sda-compare-row .sda-checklist li::before { content: "✓"; color: #2f7945; }
    .sda-compare-2col, .sda-compare-3col { display: grid; gap: 20px; margin: 24px 0; }
    .sda-compare-2col { grid-template-columns: repeat(2, minmax(0, 1fr)); }
    .sda-compare-3col { grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 16px; }
    .sda-compare-card { background: #f7f6f4; border-radius: 10px; padding: 22px; }
    .sda-compare-card.accent { background: #fdf3ee; }
    .sda-compare-card-title { font-size: 18px; line-height: 1.4; margin: 0 0 12px; color: #111111; }
    .sda-compare-card p, .sda-compare-card ul li { font-size: 15px; color: #555555; }
    .sda-compare-card p { margin: 0 0 14px; }
    .sda-badge { display: inline-block; padding: 3px 10px; border-radius: 999px; font-size: 11px; font-weight: 700; letter-spacing: .06em; text-transform: uppercase; margin-bottom: 12px; }
    .sda-essential { background: #e6f4ea; color: #296b3d; }
    .sda-conditional { background: #fbe9df; color: #a33d16; }
    .sda-optional { background: #e9e9e9; color: #555555; }
    .sda-compare-callout { background: #fdf3ee; border-left: 4px solid #d9531e; padding: 20px 24px; border-radius: 4px; margin: 28px 0; }
    .sda-compare-callout-label { display: block; color: #b44015; text-transform: uppercase; font-size: 12px; font-weight: 700; letter-spacing: .08em; margin-bottom: 8px; }
    .sda-compare-callout p { margin: 0; font-size: 17px; color: #3a3a3a; }
    .sda-related { font-size: 15px; margin-top: 22px; }
    .sda-mistake { padding: 20px 0; border-bottom: 1px solid #eeeeee; }
    .sda-mistake h3 { font-size: 18px; margin: 0 0 8px; }
    .sda-mistake p { font-size: 17px; color: #555555; margin: 0; }
    .sda-faq details { border-bottom: 1px solid #eeeeee; padding: 20px 0; }
    .sda-faq summary { font-size: 18px; font-weight: 700; color: #b44015; cursor: pointer; }
    .sda-faq details p { color: #555555; font-size: 17px; margin: 14px 0 0; }
    .sda-compare-footer { text-align: center; color: #777777; font-size: 13px; border-top: 1px solid #eeeeee; padding-top: 28px; margin-top: 60px; }
    @media (max-width: 700px) {
      .sda-compare-2col, .sda-compare-3col { grid-template-columns: 1fr; }
      .sda-compare-toc ol { columns: 1; }
    }
    @media (max-width: 560px) {
      .sda-compare-shell { padding: 40px 18px 80px; }
      .sda-compare-toc { padding: 24px; }
    }
    @media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } }