* { box-sizing: border-box; }
  html, body {
    margin: 0;
    padding: 0;
    background: #ffffff;
    color: #2a2a2a;
    font-family: "Helvetica Neue", Helvetica, Arial, "Segoe UI", sans-serif;
    line-height: 1.85;
    -webkit-font-smoothing: antialiased;
  }

  .sda-compare-shell {
    max-width: 860px;
    margin: 0 auto;
    padding: 60px 24px 100px;
  }

  /* ============ HEADER ============ */
  .sda-compare-header { text-align: center; margin-bottom: 20px; }
  .sda-compare-title {
    font-size: clamp(30px, 4.8vw, 46px);
    font-weight: 800;
    color: #111111;
    margin: 0 0 16px;
    line-height: 1.25;
  }
  .sda-compare-subtitle {
    font-size: 18px;
    color: #666666;
    margin: 0 auto 20px;
    max-width: 640px;
  }
  .sda-compare-meta { font-size: 13px; color: #aaaaaa; margin-bottom: 48px; }
  .sda-compare-meta span { margin: 0 6px; }

  /* ============ TOC ============ */
  .sda-compare-toc {
    background: #f7f6f4;
    border-radius: 12px;
    padding: 28px 30px;
    margin-bottom: 56px;
  }
  .sda-compare-toc-title {
    font-size: 13px;
    font-weight: 700;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    color: #d9531e;
    margin: 0 0 16px;
  }
  .sda-compare-toc ol {
    margin: 0;
    padding-left: 20px;
    columns: 2;
    column-gap: 32px;
  }
  .sda-compare-toc li { font-size: 15px; margin-bottom: 10px; break-inside: avoid; }
  .sda-compare-toc a { color: #333333; text-decoration: none; }
  .sda-compare-toc a:hover { color: #d9531e; }

  /* ============ SECTIONS ============ */
  .sda-compare-row { margin-bottom: 56px; scroll-margin-top: 20px; }
  .sda-compare-row:last-child { margin-bottom: 0; }

  .sda-compare-eyebrow {
    display: inline-block;
    font-size: 13px;
    font-weight: 700;
    letter-spacing: 0.14em;
    text-transform: uppercase;
    color: #d9531e;
    margin-bottom: 10px;
  }

  .sda-compare-h2 {
    font-size: clamp(24px, 3.2vw, 32px);
    font-weight: 800;
    color: #111111;
    margin: 0 0 18px;
    line-height: 1.3;
  }

  .sda-compare-h3 {
    font-size: clamp(17px, 2.2vw, 19px);
    font-weight: 700;
    color: #1a1a1a;
    margin: 26px 0 10px;
  }

  .sda-compare-text {
    font-size: clamp(17px, 2.1vw, 20px);
    color: #555555;
    margin: 0 0 16px;
  }
  .sda-compare-text:last-child { margin-bottom: 0; }
  .sda-compare-text strong { color: #d9531e; font-weight: 700; }

  /* ============ FREQUENCY BADGES ============ */
  .sda-freq {
    display: inline-block;
    font-size: 11px;
    font-weight: 700;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    padding: 4px 12px;
    border-radius: 999px;
    margin-bottom: 14px;
  }
  .sda-freq.daily { background: #e6f4ea; color: #2f8f4e; }
  .sda-freq.weekly { background: #fdf0e6; color: #d9531e; }
  .sda-freq.monthly { background: #eeeeee; color: #444444; }

  /* ============ LISTS ============ */
  .sda-compare-row ul, .sda-compare-row ol.sda-steps { list-style: none; margin: 0 0 16px; padding: 0; }
  .sda-compare-row ul li, .sda-compare-row ol.sda-steps li {
    position: relative;
    padding-left: 24px;
    font-size: clamp(16px, 2vw, 18px);
    color: #555555;
    margin-bottom: 10px;
  }
  .sda-compare-row ul li:last-child, .sda-compare-row ol.sda-steps li:last-child { margin-bottom: 0; }
  .sda-compare-row ul li::before {
    content: '—';
    position: absolute;
    left: 0;
    color: #d9531e;
    font-weight: 700;
  }
  .sda-compare-row ul li strong { color: #1a1a1a; font-weight: 700; }

  .sda-checklist li::before { content: '✓'; color: #2f8f4e; font-weight: 800; }

  ol.sda-steps { counter-reset: step-counter; }
  ol.sda-steps li { counter-increment: step-counter; padding-left: 30px; }
  ol.sda-steps li::before {
    content: counter(step-counter);
    position: absolute;
    left: 0;
    top: 0;
    color: #ffffff;
    background: #d9531e;
    font-weight: 700;
    font-size: 12px;
    width: 20px;
    height: 20px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    line-height: 1;
  }

  /* ============ CALLOUT ============ */
  .sda-compare-callout {
    background: #fdf3ee;
    border-left: 4px solid #d9531e;
    border-radius: 4px;
    padding: 20px 24px;
    margin: 28px 0;
  }
  .sda-compare-callout-label {
    display: block;
    font-size: 13px;
    font-weight: 700;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    color: #d9531e;
    margin-bottom: 8px;
  }
  .sda-compare-callout p {
    margin: 0;
    font-size: clamp(16px, 2vw, 18px);
    color: #3a3a3a;
    line-height: 1.75;
  }

  /* ============ THREE-CARD (WASH/DRY/PROTECT) ============ */
  .sda-compare-3col {
    display: grid;
    grid-template-columns: 1fr 1fr 1fr;
    gap: 16px;
    margin: 24px 0;
  }
  .sda-step-card {
    background: #f7f6f4;
    border-radius: 10px;
    padding: 20px 18px;
  }
  .sda-step-card .sda-step-num {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 28px;
    height: 28px;
    border-radius: 50%;
    background: #d9531e;
    color: #ffffff;
    font-weight: 800;
    font-size: 14px;
    margin-bottom: 12px;
  }
  .sda-step-card-title { font-size: 16px; font-weight: 800; color: #111111; margin: 0 0 10px; }
  .sda-step-card ul li { font-size: 14px; }

  /* ============ TWO-CARD BLOCKS ============ */
  .sda-compare-2col {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
    margin: 24px 0;
  }
  .sda-compare-card { background: #f7f6f4; border-radius: 10px; padding: 22px 22px; }
  .sda-compare-card.accent { background: #fdf3ee; }
  .sda-compare-card-title { font-size: 17px; font-weight: 800; color: #111111; margin: 0 0 12px; }
  .sda-compare-card.accent .sda-compare-card-title { color: #d9531e; }
  .sda-compare-card ul li { font-size: 15px; }

  /* ============ TROUBLESHOOTING CARD ============ */
  .sda-trouble {
    border: 1px solid #ececec;
    border-radius: 12px;
    padding: 26px 26px;
    margin: 24px 0;
  }
  .sda-trouble-title {
    font-size: 19px;
    font-weight: 800;
    color: #111111;
    margin: 0 0 16px;
  }
  .sda-trouble-label {
    display: block;
    font-size: 12px;
    font-weight: 700;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    color: #999999;
    margin: 18px 0 8px;
  }
  .sda-trouble-label:first-of-type { margin-top: 0; }
  .sda-trouble ul li { font-size: 15px; margin-bottom: 8px; }

  /* ============ MISTAKE BLOCKS ============ */
  .sda-myth { margin-bottom: 24px; padding-bottom: 24px; border-bottom: 1px solid #eeeeee; }
  .sda-myth:last-child { border-bottom: none; margin-bottom: 0; padding-bottom: 0; }
  .sda-myth-badge {
    display: inline-block;
    font-size: 11px;
    font-weight: 700;
    letter-spacing: 0.06em;
    text-transform: uppercase;
    color: #c0392b;
    background: #fbe4e1;
    padding: 4px 10px;
    border-radius: 999px;
    margin-bottom: 10px;
  }
  .sda-myth-claim { font-size: 17px; font-weight: 700; color: #111111; margin: 0 0 8px; }
  .sda-myth-reality { font-size: 15.5px; color: #555555; margin: 0; }
  .sda-myth-reality strong { color: #2f8f4e; }

  /* ============ DIVIDER ============ */
  .sda-compare-divider { border: none; border-top: 1px solid #e5e5e5; margin: 56px 0; }

  /* ============ FOOTER ============ */
  .sda-compare-footer { text-align: center; font-size: 13px; color: #aaaaaa; margin-top: 60px; }

  /* ============ RESPONSIVE ============ */
  @media (max-width: 700px) {
    .sda-compare-2col { grid-template-columns: 1fr; }
    .sda-compare-3col { grid-template-columns: 1fr; }
    .sda-compare-toc ol { columns: 1; }
  }
  @media (max-width: 560px) {
    .sda-compare-shell { padding: 40px 18px 80px; }
  }