:root {
  --bmi-accent: var(--primary, var(--nf-green, #00a86b));
  --bmi-accent-dark: var(--nf-green-dark, #008f5c);
  --bmi-page: var(--bg, var(--nf-bg, #f5f8f7));
  --bmi-surface: #ffffff;
  --bmi-text: var(--text, var(--nf-text, #081a34));
  --bmi-muted: var(--para, var(--nf-muted, #66758f));
  --bmi-border: rgba(8, 26, 52, 0.10);
  --bmi-soft: #e7f8f2;
  --bmi-shadow: 0 18px 50px rgba(8, 26, 52, 0.08);
}

/* NovaFitHub's current script adds body.dark. Extra selectors make this page future-safe. */
body.dark .bmi-accuracy-page,
body.dark-mode .bmi-accuracy-page,
html.dark .bmi-accuracy-page,
html[data-theme="dark"] .bmi-accuracy-page,
body[data-theme="dark"] .bmi-accuracy-page {
  --bmi-page: #041226;
  --bmi-surface: #0b1b31;
  --bmi-text: #f4f7fb;
  --bmi-muted: #a8b4c6;
  --bmi-border: rgba(255, 255, 255, 0.10);
  --bmi-soft: rgba(0, 168, 107, 0.14);
  --bmi-shadow: 0 18px 50px rgba(0, 0, 0, 0.28);
}

.bmi-accuracy-page {
  width: 100%;
  background: var(--bmi-page);
  color: var(--bmi-text);
  transition: background-color .25s ease, color .25s ease;
}

.bmi-accuracy-article {
  width: min(100% - 32px, 920px);
  margin: 0 auto;
  padding: 56px 0 72px;
}

.bmi-accuracy-hero {
  margin-bottom: 26px;
  padding: 42px clamp(24px, 4vw, 52px);
  background: var(--bmi-surface);
  border: 1px solid var(--bmi-border);
  border-radius: 22px;
  box-shadow: var(--bmi-shadow);
}

.bmi-accuracy-eyebrow {
  display: inline-flex;
  padding: 7px 12px;
  margin-bottom: 15px;
  border-radius: 999px;
  background: var(--bmi-soft);
  color: var(--bmi-accent-dark);
  font-size: .78rem;
  font-weight: 800;
  letter-spacing: .04em;
  text-transform: uppercase;
}

body.dark .bmi-accuracy-eyebrow {
  color: #52d7ad;
}

.bmi-accuracy-hero h1 {
  margin: 0;
  color: var(--bmi-text);
  font-size: clamp(2rem, 5vw, 3rem);
  line-height: 1.12;
  letter-spacing: -.03em;
  text-align: left;
}

.bmi-accuracy-content {
  padding: clamp(24px, 5vw, 50px);
  background: var(--bmi-surface);
  border: 1px solid var(--bmi-border);
  border-radius: 22px;
  box-shadow: var(--bmi-shadow);
}

.bmi-section + .bmi-section {
  margin-top: 44px;
}

.bmi-accuracy-content h2,
.bmi-accuracy-content h3 {
  color: var(--bmi-text);
  text-align: left;
}

.bmi-accuracy-content h2 {
  margin: 0 0 17px;
  font-size: clamp(1.5rem, 3vw, 2rem);
  line-height: 1.28;
}

.bmi-accuracy-content h3 {
  margin: 27px 0 10px;
  font-size: clamp(1.08rem, 2vw, 1.28rem);
  line-height: 1.4;
}

.bmi-accuracy-content p,
.bmi-accuracy-content li {
  color: var(--bmi-text);
  font-size: 1rem;
  line-height: 1.8;
}

.bmi-accuracy-content p {
  margin: 0 0 15px;
}

.bmi-accuracy-content ul {
  margin: 14px 0 18px;
  padding-left: 23px;
}

.bmi-accuracy-content li + li {
  margin-top: 7px;
}

.bmi-accuracy-content a {
  color: var(--bmi-accent-dark);
  font-weight: 700;
  text-decoration-thickness: 1.5px;
  text-underline-offset: 3px;
}

body.dark .bmi-accuracy-content a {
  color: #52d7ad;
}

.bmi-accuracy-content a:hover {
  color: var(--bmi-accent);
}

.bmi-formula {
  display: inline-block;
  margin: 4px 0 18px !important;
  padding: 14px 18px;
  background: var(--bmi-page);
  border: 1px solid var(--bmi-border);
  border-radius: 12px;
  font-weight: 800;
}

.bmi-callout {
  margin-top: 20px !important;
  padding: 17px 19px;
  background: var(--bmi-soft);
  border-left: 4px solid var(--bmi-accent);
  border-radius: 10px;
}

.bmi-table-wrap {
  width: 100%;
  margin: 20px 0 22px;
  overflow-x: auto;
  border: 1px solid var(--bmi-border);
  border-radius: 13px;
}

.bmi-table-wrap table {
  width: 100%;
  min-width: 600px;
  border-collapse: collapse;
  background: var(--bmi-surface);
}

.bmi-table-wrap th,
.bmi-table-wrap td {
  padding: 13px 15px;
  border-bottom: 1px solid var(--bmi-border);
  color: var(--bmi-text);
  text-align: left;
  vertical-align: top;
  line-height: 1.55;
}

.bmi-table-wrap thead th {
  background: var(--bmi-soft);
  font-weight: 800;
}

.bmi-table-wrap tbody tr:last-child th,
.bmi-table-wrap tbody tr:last-child td {
  border-bottom: 0;
}

.bmi-faq {
  display: grid;
  gap: 11px;
}

.bmi-faq details {
  overflow: hidden;
  background: var(--bmi-page);
  border: 1px solid var(--bmi-border);
  border-radius: 12px;
}

.bmi-faq summary {
  position: relative;
  cursor: pointer;
  list-style: none;
  padding: 16px 46px 16px 17px;
  color: var(--bmi-text);
  font-weight: 750;
  line-height: 1.5;
}

.bmi-faq summary::-webkit-details-marker {
  display: none;
}

.bmi-faq summary::after {
  content: "+";
  position: absolute;
  right: 17px;
  top: 50%;
  transform: translateY(-50%);
  color: var(--bmi-accent);
  font-size: 1.35rem;
}

.bmi-faq details[open] summary::after {
  content: "−";
}

.bmi-faq details p {
  margin: 0;
  padding: 0 17px 17px;
  color: var(--bmi-muted);
}

.bmi-references {
  padding-top: 34px;
  border-top: 1px solid var(--bmi-border);
}

.bmi-references li {
  color: var(--bmi-muted);
  overflow-wrap: anywhere;
}

@media (max-width: 768px) {
  .bmi-accuracy-article {
    width: min(100% - 22px, 920px);
    padding: 32px 0 48px;
  }

  .bmi-accuracy-hero,
  .bmi-accuracy-content {
    border-radius: 17px;
  }

  .bmi-accuracy-hero {
    padding: 29px 21px;
    margin-bottom: 18px;
  }

  .bmi-accuracy-content {
    padding: 25px 19px 30px;
  }

  .bmi-section + .bmi-section {
    margin-top: 36px;
  }
}

@media (max-width: 480px) {
  .bmi-accuracy-article {
    width: min(100% - 16px, 920px);
    padding-top: 22px;
  }

  .bmi-accuracy-hero {
    padding: 24px 17px;
  }

  .bmi-accuracy-content {
    padding: 22px 16px 27px;
  }

  .bmi-accuracy-hero h1 {
    font-size: 1.85rem;
  }

  .bmi-accuracy-content p,
  .bmi-accuracy-content li {
    font-size: .96rem;
    line-height: 1.72;
  }

  .bmi-table-wrap th,
  .bmi-table-wrap td {
    padding: 11px 12px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .bmi-accuracy-page {
    transition: none;
  }
}