:root {
  /* Light Theme Color Swatches styled around blood/cardiovascular health theme */
  --oh-bg-main: #F8FAFC;
  --oh-bg-card: #FFFFFF;
  --oh-bg-dark: #0F172A;
  
  --oh-ink-dark: #1E293B;
  --oh-ink-light: #F8FAFC;
  --oh-ink-mute: #64748B;
  
  --oh-tone-primary: #D9223F; /* Crimson/Heart red accent */
  --oh-tone-hover: #B91C1C;
  --oh-tone-light: #FEE2E2;
  --oh-gradient: linear-gradient(135deg, #D9223F 0%, #EF4444 100%);
  
  /* Fonts configuration via prompt rules */
  --font-display: 'Montserrat', sans-serif;
  --font-body: 'Poppins', sans-serif;
  
  /* Geometry & Layout params */
  --oh-container-width: 1120px;
  --oh-radius: 16px; /* Soft Style */
  --oh-shadow: 0 10px 15px -3px rgba(15, 23, 42, 0.05), 0 4px 6px -2px rgba(15, 23, 42, 0.02); /* Raised Style */
  --oh-transform-heading: uppercase; /* Heading Case */
}

/* Base resets & styles integration */
body {
  font-family: var(--font-body);
  background-color: var(--oh-bg-main);
  color: var(--oh-ink-dark);
}

h1, h2, h3, h4, .oh-logo-font {
  font-family: var(--font-display);
}

/* Custom layout constraints */
.oh-envelope {
  max-width: var(--oh-container-width);
  width: 100%;
  margin-left: auto;
  margin-right: auto;
  padding-left: 24px;
  padding-right: 24px;
}

/* Gradient decorative background pattern */
.oh-decor-bg {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background-image: radial-gradient(circle at 10% 20%, rgba(217, 34, 63, 0.03) 0%, transparent 40%),
                    radial-gradient(circle at 90% 80%, rgba(217, 34, 63, 0.03) 0%, transparent 40%);
  z-index: 0;
  pointer-events: none;
}

/* PRESET A: SPLIT STICKY LAYOUT */
.oh-focus-mesh {
  display: flex;
  flex-direction: column;
  gap: 32px;
}

@media (min-width: 1024px) {
  .oh-focus-mesh {
    flex-direction: row;
    align-items: flex-start;
    gap: 64px;
  }
}

/* Image left column */
.oh-image-anchor {
  width: 100%;
}

@media (min-width: 1024px) {
  .oh-image-anchor {
    width: 40%;
    position: sticky;
    top: 32px;
    align-self: flex-start;
  }
}

.oh-image-wrapper {
  border-radius: var(--oh-radius);
  box-shadow: var(--oh-shadow);
  overflow: hidden;
  border: 1px solid rgba(15, 23, 42, 0.05);
}

.oh-hero-img {
  max-width: 100%;
  height: auto;
  object-fit: contain;
  display: block;
}

/* Data right column */
.oh-data-hub {
  width: 100%;
}

@media (min-width: 1024px) {
  .oh-data-hub {
    width: 60%;
  }
}

/* Titles and typography adjustments */
.oh-caption-h1 {
  font-size: 2rem;
  line-height: 1.25;
  font-weight: 800;
  color: var(--oh-bg-dark);
  text-transform: var(--oh-transform-heading);
}

@media (min-width: 768px) {
  .oh-caption-h1 {
    font-size: 2.5rem;
  }
}

.oh-description-panel {
  background-color: var(--oh-bg-card);
  padding: 24px;
  border-radius: var(--oh-radius);
  box-shadow: var(--oh-shadow);
  border: 1px solid rgba(15, 23, 42, 0.03);
}

.oh-desc-paragraph {
  font-size: 0.95rem;
  line-height: 1.6;
  color: var(--oh-ink-mute);
}

/* Features Separated Section (Preset A rows) */
.oh-perks-stack {
  display: flex;
  flex-direction: column;
  gap: 24px;
}

.oh-perk-row {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 16px;
  background-color: var(--oh-bg-card);
  padding: 24px;
  border-radius: var(--oh-radius);
  box-shadow: var(--oh-shadow);
}

@media (min-width: 640px) {
  .oh-perk-row {
    flex-direction: row;
    align-items: center;
    gap: 24px;
  }
}

.oh-perk-icon-circle {
  width: 64px;
  height: 64px;
  border-radius: 50%;
  background-color: var(--oh-tone-light);
  color: var(--oh-tone-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.oh-perk-details {
  flex: 1;
}

/* Price Display (Badge Style) */
.oh-price-badge {
  background-color: var(--oh-tone-primary);
  color: var(--oh-ink-light);
  padding: 8px 18px;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 1.5rem;
  display: inline-block;
  border-radius: var(--oh-radius);
  box-shadow: 0 4px 10px rgba(217, 34, 63, 0.15);
}

/* CTA conversion trigger style */
.oh-trigger-btn {
  display: block;
  width: 100%;
  text-align: center;
  background: var(--oh-gradient);
  color: var(--oh-ink-light);
  padding: 16px 24px;
  font-family: var(--font-display);
  font-weight: 700;
  text-transform: uppercase;
  border-radius: var(--oh-radius);
  transition: transform 0.2s, box-shadow 0.2s;
  box-shadow: 0 8px 20px -4px rgba(217, 34, 63, 0.4);
}

.oh-trigger-btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 12px 24px -4px rgba(217, 34, 63, 0.6);
  color: var(--oh-ink-light);
  text-decoration: none;
}

/* Testimonials (Preset A Style) */
.oh-opinion-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 24px;
}

@media (min-width: 1024px) {
  .oh-opinion-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

.oh-opinion-pave {
  background-color: var(--oh-bg-card);
  border-radius: var(--oh-radius);
  border-top: 4px solid var(--oh-tone-primary);
  padding: 28px;
  box-shadow: var(--oh-shadow);
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.oh-avatar-circle {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background-color: var(--oh-bg-dark);
  color: var(--oh-ink-light);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-family: var(--font-display);
  font-size: 0.9rem;
}

.oh-opinion-body {
  font-size: 0.9rem;
  line-height: 1.6;
  color: var(--oh-ink-mute);
  font-style: italic;
}