/* ==========================================================================
   Back to You: 7-Day Back Pain Relief Challenge
   Dedicated Stylesheet - 1-to-1 Clean Aesthetic + Kim's Brand Red Theme
   ========================================================================== */

@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700;800&family=Outfit:wght@500;600;700;800;900&family=Kalam:wght@400;700&display=swap');

:root {
  /* Clean Trustworthy Off-White & Crisp Surfaces */
  --yb-bg-page: #F8F9FD;
  --yb-bg-white: #FFFFFF;
  --yb-bg-subtle: #F1F3F9;
  --yb-bg-accent-soft: #FFF5F5;  /* Soft warm red tint */
  
  /* Text */
  --yb-text-dark: #111827;       /* Obsidian charcoal */
  --yb-text-body: #374151;       /* Crisp dark grey */
  --yb-text-muted: #6B7280;      /* Secondary neutral */
  --yb-text-light: #9CA3AF;      /* Subtle neutral */
  
  /* Kim's Signature Brand Red */
  --yb-red-main: #E53935;        /* Signature Kim Red */
  --yb-red-dark: #B71C1C;        /* Deep burgundy red */
  --yb-red-hover: #D32F2F;       /* Hover state */
  --yb-red-soft: #FFF5F5;        /* Soft pill background */
  --yb-red-border: #FFCDD2;      /* Soft red border */
  --yb-red-glow: rgba(229, 57, 53, 0.28);

  /* Secondary Accents */
  --yb-cta-gold: #F59E0B;
  --yb-cta-gold-hover: #D97706;
  
  /* Green Trust & Success */
  --yb-green-main: #059669;
  --yb-green-soft: #ECFDF5;
  --yb-green-border: #A7F3D0;
  
  /* Gold Badges & Stars */
  --yb-gold-stars: #FBBF24;
  
  /* Layout & Radii */
  --yb-radius-sm: 8px;
  --yb-radius-md: 14px;
  --yb-radius-lg: 20px;
  --yb-radius-pill: 9999px;
  --yb-container-width: 1060px;
  --yb-editorial-width: 740px;
  
  /* Shadows */
  --yb-shadow-sm: 0 2px 8px rgba(17, 24, 39, 0.04);
  --yb-shadow-md: 0 8px 24px rgba(17, 24, 39, 0.06);
  --yb-shadow-lg: 0 16px 40px rgba(17, 24, 39, 0.09);
  --yb-shadow-video: 0 20px 50px rgba(17, 24, 39, 0.16);
  --yb-shadow-cta: 0 10px 25px rgba(229, 57, 53, 0.35);
  
  /* Fonts */
  --yb-font-heading: 'Outfit', -apple-system, BlinkMacSystemFont, sans-serif;
  --yb-font-body: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  --yb-font-note: 'Kalam', cursive;
}

/* Base Reset */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  font-size: 16px;
  scroll-behavior: smooth;
  overflow-x: hidden;
}

body {
  background-color: var(--yb-bg-page);
  color: var(--yb-text-body);
  font-family: var(--yb-font-body);
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}

img {
  max-width: 100%;
  height: auto;
  display: block;
}

a {
  color: inherit;
  text-decoration: none;
}

.yb-container {
  width: 100%;
  max-width: var(--yb-container-width);
  margin: 0 auto;
  padding: 0 1.25rem;
}

.yb-editorial-container {
  width: 100%;
  max-width: var(--yb-editorial-width);
  margin: 0 auto;
  padding: 0 1.25rem;
}

/* ==========================================================================
   1. Top Announcement Bar
   ========================================================================== */
.yb-top-notice-bar {
  background-color: #111827;
  color: #F3F4F6;
  font-size: 0.8rem;
  font-weight: 500;
  text-align: center;
  padding: 0.55rem 1rem;
  letter-spacing: 0.02em;
}

.yb-top-notice-bar strong {
  color: #FFFFFF;
  font-weight: 700;
}

/* ==========================================================================
   2. Main Navigation Header
   ========================================================================== */
.yb-nav-header {
  background-color: var(--yb-bg-white);
  border-bottom: 1px solid #E5E7EB;
  position: sticky;
  top: 0;
  z-index: 100;
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.02);
}

.yb-nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.85rem 1.25rem;
  max-width: var(--yb-container-width);
  margin: 0 auto;
}

.yb-brand {
  display: flex;
  align-items: center;
  gap: 0.65rem;
  text-decoration: none;
}

.yb-brand-logo {
  width: 38px;
  height: 38px;
  border-radius: 8px;
  object-fit: cover;
  border: 1px solid #E5E7EB;
}

.yb-brand-text {
  display: flex;
  flex-direction: column;
  line-height: 1.15;
}

.yb-brand-name {
  font-family: var(--yb-font-heading);
  font-size: 1.15rem;
  font-weight: 900;
  color: var(--yb-text-dark);
  letter-spacing: -0.01em;
}

.yb-brand-sub {
  font-size: 0.72rem;
  color: var(--yb-red-main);
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

.yb-nav-menu {
  display: flex;
  align-items: center;
  gap: 1.5rem;
  list-style: none;
}

.yb-nav-link {
  font-size: 0.88rem;
  font-weight: 600;
  color: var(--yb-text-body);
  transition: color 0.15s ease;
}

.yb-nav-link:hover {
  color: var(--yb-red-main);
}

.yb-nav-cta {
  background-color: var(--yb-red-main);
  color: #FFFFFF !important;
  padding: 0.55rem 1.25rem;
  border-radius: var(--yb-radius-pill);
  font-weight: 700;
  font-size: 0.86rem;
  transition: all 0.2s ease;
  box-shadow: 0 3px 10px rgba(229, 57, 53, 0.3);
}

.yb-nav-cta:hover {
  background-color: var(--yb-red-hover);
  transform: translateY(-1px);
}

@media (max-width: 820px) {
  .yb-nav-menu .yb-nav-item:not(.yb-nav-item-cta) {
    display: none;
  }
}

/* ==========================================================================
   3. Hero Section
   ========================================================================== */
.yb-hero-section {
  padding: 2.75rem 0 3.25rem;
  text-align: center;
  background: var(--yb-bg-page);
}

.yb-hero-eyebrow {
  display: inline-block;
  font-size: 0.88rem;
  font-weight: 800;
  color: var(--yb-red-main);
  background: var(--yb-red-soft);
  border: 1px solid var(--yb-red-border);
  padding: 0.35rem 1rem;
  border-radius: var(--yb-radius-pill);
  margin-bottom: 0.85rem;
  letter-spacing: 0.05em;
  text-transform: uppercase;
}

.yb-hero-title {
  font-family: var(--yb-font-heading);
  font-size: clamp(2.4rem, 5vw, 3.8rem);
  font-weight: 900;
  color: var(--yb-text-dark);
  line-height: 1.12;
  letter-spacing: -0.025em;
  margin-bottom: 0.75rem;
}

.yb-hero-highlight {
  font-family: var(--yb-font-heading);
  font-size: clamp(1.15rem, 2.2vw, 1.45rem);
  font-weight: 800;
  color: var(--yb-red-dark);
  margin-bottom: 0.85rem;
}

.yb-hero-subhead {
  font-size: clamp(1rem, 1.6vw, 1.15rem);
  color: var(--yb-text-body);
  max-width: 760px;
  margin: 0 auto 2.25rem;
  line-height: 1.6;
}

/* Video Frame */
.yb-video-container {
  max-width: 820px;
  margin: 0 auto 2rem;
}

.yb-video-card {
  position: relative;
  width: 100%;
  padding-bottom: 56.25%;
  background: #000000;
  border-radius: var(--yb-radius-lg);
  overflow: hidden;
  box-shadow: var(--yb-shadow-video);
  border: 1px solid rgba(0, 0, 0, 0.08);
}

.yb-video-poster {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0.92;
}

.yb-video-overlay {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  background: linear-gradient(180deg, rgba(0,0,0,0.15) 0%, rgba(0,0,0,0.72) 100%);
  color: #FFFFFF;
  text-align: center;
  padding: 1.5rem;
  cursor: pointer;
}

.yb-play-btn {
  width: 76px;
  height: 76px;
  border-radius: 50%;
  background: var(--yb-red-main);
  border: 4px solid #FFFFFF;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 8px 24px rgba(229, 57, 53, 0.45);
  margin-bottom: 1rem;
  transition: transform 0.25s ease, background-color 0.25s ease;
}

.yb-play-btn:hover {
  transform: scale(1.1);
  background: var(--yb-red-hover);
}

.yb-play-btn svg {
  fill: #FFFFFF;
  width: 28px;
  height: 28px;
  margin-left: 4px;
}

.yb-video-tag {
  font-family: var(--yb-font-heading);
  font-size: 0.92rem;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--yb-gold-stars);
  margin-bottom: 0.35rem;
  text-shadow: 0 2px 4px rgba(0,0,0,0.6);
}

.yb-video-heading {
  font-family: var(--yb-font-heading);
  font-size: clamp(1.4rem, 2.8vw, 2.1rem);
  font-weight: 900;
  letter-spacing: -0.01em;
  text-shadow: 0 2px 6px rgba(0,0,0,0.8);
  margin-bottom: 0.35rem;
}

.yb-video-coach {
  font-size: 0.92rem;
  opacity: 0.95;
  text-shadow: 0 2px 4px rgba(0,0,0,0.8);
}

/* Trust Proof Under Video */
.yb-hero-trust {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 1.25rem;
  flex-wrap: wrap;
  margin-top: 1.25rem;
  margin-bottom: 2rem;
}

.yb-trust-stars {
  display: flex;
  align-items: center;
  gap: 0.4rem;
  color: var(--yb-text-dark);
  font-weight: 700;
  font-size: 0.92rem;
}

.yb-stars-icons {
  color: var(--yb-gold-stars);
  letter-spacing: 2px;
  font-size: 1.05rem;
}

.yb-trust-badges-row {
  display: flex;
  align-items: center;
  gap: 1.25rem;
  font-size: 0.84rem;
  font-weight: 700;
  color: var(--yb-text-muted);
}

/* Hero Checkout Box (Modeled 1-to-1 from User Screenshot) */
.yb-hero-checkout-box {
  max-width: 440px;
  margin: 0 auto;
  background: var(--yb-bg-white);
  border: 1px solid #E5E7EB;
  border-radius: 20px;
  padding: 1.85rem 1.6rem;
  box-shadow: 0 12px 35px rgba(17, 24, 39, 0.08);
  text-align: center;
}

.yb-email-input {
  width: 100%;
  padding: 1rem 1.25rem;
  border: 1.5px solid #D1D5DB;
  border-radius: var(--yb-radius-md);
  font-size: 0.9rem;
  font-family: var(--yb-font-body);
  text-align: center;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: var(--yb-text-dark);
  margin-bottom: 1rem;
  transition: border-color 0.2s, box-shadow 0.2s;
  outline: none;
}

.yb-email-input:focus {
  border-color: var(--yb-red-main);
  box-shadow: 0 0 0 3px rgba(229, 57, 53, 0.15);
}

.yb-btn-start-now {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.85rem;
  width: 100%;
  background: linear-gradient(135deg, #FF3B30 0%, var(--yb-red-main) 100%);
  color: #FFFFFF;
  border: none;
  border-radius: var(--yb-radius-pill);
  padding: 0.95rem 1.4rem;
  cursor: pointer;
  box-shadow: 0 8px 24px rgba(229, 57, 53, 0.4);
  transition: all 0.2s ease;
  margin-bottom: 1rem;
  text-align: left;
}

.yb-btn-start-now:hover {
  transform: translateY(-2px);
  box-shadow: 0 12px 30px rgba(229, 57, 53, 0.55);
}

.yb-btn-arrow-circle {
  width: 38px;
  height: 38px;
  border-radius: 50%;
  background: #111827;
  color: #FFFFFF;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.15rem;
  flex-shrink: 0;
}

.yb-btn-text-group {
  display: flex;
  flex-direction: column;
  line-height: 1.15;
}

.yb-btn-main-text {
  font-family: var(--yb-font-heading);
  font-size: 1.15rem;
  font-weight: 900;
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

.yb-btn-sub-text {
  font-size: 0.76rem;
  letter-spacing: 0.05em;
  opacity: 0.92;
  text-transform: uppercase;
}

.yb-secure-caption {
  font-size: 0.82rem;
  color: #4B5563;
  margin-bottom: 0.85rem;
  font-weight: 500;
}

.yb-cards-row {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  margin-bottom: 1rem;
}

.yb-card-pill {
  height: 24px;
  padding: 2px 6px;
  background: #F3F4F6;
  border: 1px solid #E5E7EB;
  border-radius: 4px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.65rem;
  font-weight: 800;
  color: #374151;
}

.yb-guarantee-mini-row {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.65rem;
  margin-bottom: 1rem;
  font-family: var(--yb-font-heading);
  font-size: 0.84rem;
  font-weight: 800;
  color: #1F2937;
  text-transform: uppercase;
  letter-spacing: 0.02em;
}

.yb-guarantee-mini-icon {
  width: 28px;
  height: 28px;
  flex-shrink: 0;
}

.yb-security-badges-row {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.75rem;
  font-size: 0.72rem;
  color: #6B7280;
  font-weight: 600;
  border-top: 1px solid #F3F4F6;
  padding-top: 0.85rem;
}

/* ==========================================================================
   4. Visual Social Proof: Mums Photo Marquee Strip
   ========================================================================== */
.mums-strip-section {
  position: relative;
  padding: 3rem 0;
  background: #FFFFFF;
  border-top: 1px solid #E5E7EB;
  border-bottom: 1px solid #E5E7EB;
  overflow: hidden;
  text-align: center;
}

.mums-strip-header {
  margin-bottom: 2rem;
}

.mums-strip-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  font-size: 0.78rem;
  font-weight: 800;
  color: var(--yb-green-main);
  background: var(--yb-green-soft);
  border: 1px solid var(--yb-green-border);
  padding: 0.3rem 0.85rem;
  border-radius: var(--yb-radius-pill);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: 0.65rem;
}

.mums-strip-badge-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--yb-green-main);
}

.mums-strip-title {
  font-family: var(--yb-font-heading);
  font-size: clamp(1.8rem, 3.2vw, 2.5rem);
  font-weight: 900;
  color: var(--yb-text-dark);
  margin-bottom: 0.4rem;
}

.mums-strip-sub {
  font-size: 0.98rem;
  color: var(--yb-text-muted);
  max-width: 680px;
  margin: 0 auto;
}

.mums-strip-fade-wrapper {
  position: relative;
  overflow: hidden;
  mask-image: linear-gradient(to right, transparent 0%, black 5%, black 95%, transparent 100%);
  -webkit-mask-image: linear-gradient(to right, transparent 0%, black 5%, black 95%, transparent 100%);
}

.mums-strip-row {
  display: flex;
  overflow: hidden;
  user-select: none;
  margin-bottom: 12px;
}

.mums-strip-track {
  display: flex;
  width: max-content;
  will-change: transform;
}

.mums-strip-item {
  width: 120px;
  height: 120px;
  border-radius: 16px;
  overflow: hidden;
  background: #F3F4F6;
  border: 2px solid #FFFFFF;
  box-shadow: 0 4px 14px rgba(0, 0, 0, 0.08);
  margin-right: 12px;
  flex-shrink: 0;
}

.mums-strip-item img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.mums-strip-row-1 .mums-strip-track {
  animation: mumsMarqueeLeft 50s linear infinite;
}

.mums-strip-row-2 .mums-strip-track {
  animation: mumsMarqueeRight 55s linear infinite;
}

@keyframes mumsMarqueeLeft {
  0% { transform: translateX(0); }
  100% { transform: translateX(-50%); }
}

@keyframes mumsMarqueeRight {
  0% { transform: translateX(-50%); }
  100% { transform: translateX(0); }
}

/* ==========================================================================
   5. Google Reviews Carousel ("What Happens When You Have the Right Tools")
   ========================================================================== */
.yb-reviews-carousel-section {
  padding: 3.5rem 0 4.5rem;
  background: var(--yb-bg-page);
  text-align: center;
}

.yb-carousel-intro {
  margin-bottom: 2.25rem;
}

.yb-carousel-kicker {
  font-size: 0.8rem;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--yb-red-main);
  display: inline-block;
  margin-bottom: 0.4rem;
}

.yb-carousel-title {
  font-family: var(--yb-font-heading);
  font-size: clamp(1.8rem, 3.2vw, 2.5rem);
  font-weight: 900;
  color: var(--yb-text-dark);
  margin-bottom: 0.5rem;
}

.yb-carousel-sub {
  font-size: 0.98rem;
  color: var(--yb-text-muted);
  max-width: 650px;
  margin: 0 auto;
}

.carousel-wrapper {
  position: relative;
  max-width: 1000px;
  margin: 0 auto;
}

.carousel-controls {
  display: flex;
  justify-content: flex-end;
  gap: 0.65rem;
  margin-bottom: 1rem;
}

.carousel-btn {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: var(--yb-bg-white);
  border: 1px solid #D1D5DB;
  color: var(--yb-text-dark);
  font-size: 1.25rem;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: all 0.2s ease;
  box-shadow: var(--yb-shadow-sm);
}

.carousel-btn:hover {
  background: var(--yb-red-main);
  color: #FFFFFF;
  border-color: var(--yb-red-main);
}

.carousel-track {
  display: flex;
  gap: 1.5rem;
  overflow-x: auto;
  scroll-snap-type: x mandatory;
  padding-bottom: 1rem;
  scrollbar-width: none;
  -ms-overflow-style: none;
}

.carousel-track::-webkit-scrollbar {
  display: none;
}

.review-slide {
  flex: 0 0 calc(33.333% - 1rem);
  scroll-snap-align: start;
  background: var(--yb-bg-white);
  border: 1px solid #E5E7EB;
  border-radius: var(--yb-radius-lg);
  padding: 1.85rem 1.6rem;
  text-align: left;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  box-shadow: var(--yb-shadow-sm);
  min-width: 290px;
}

.slide-stars-wrap {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 0.85rem;
}

.slide-stars-wrap .stars {
  color: var(--yb-gold-stars);
  letter-spacing: 2px;
  font-size: 1rem;
}

.google-badge {
  font-size: 0.72rem;
  font-weight: 700;
  color: #4B5563;
  background: #F3F4F6;
  padding: 0.2rem 0.5rem;
  border-radius: 4px;
}

.slide-quote {
  font-size: 0.94rem;
  color: var(--yb-text-body);
  line-height: 1.6;
  margin-bottom: 1.25rem;
  flex: 1;
}

.slide-quote strong {
  color: var(--yb-text-dark);
}

.slide-author {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  border-top: 1px solid #F3F4F6;
  padding-top: 0.85rem;
}

.author-avatar img {
  width: 42px;
  height: 42px;
  border-radius: 50%;
  object-fit: cover;
  border: 2px solid var(--yb-red-main);
}

.author-meta h4 {
  font-size: 0.92rem;
  color: var(--yb-text-dark);
  font-weight: 800;
}

.author-meta p {
  font-size: 0.76rem;
  color: var(--yb-text-muted);
}

@media (max-width: 900px) {
  .review-slide {
    flex: 0 0 85%;
  }
}

/* ==========================================================================
   6. Kim's Story — Interactive Sticky Scroller Section
   ========================================================================== */
.yb-story-scroller-section {
  padding: 5rem 0;
  background: var(--yb-bg-white);
}

.yb-scroller-header {
  text-align: center;
  margin-bottom: 3.5rem;
}

.yb-scroller-header h2 {
  font-family: var(--yb-font-heading);
  font-size: clamp(2rem, 3.8vw, 2.8rem);
  font-weight: 900;
  color: var(--yb-text-dark);
  line-height: 1.2;
  margin-bottom: 0.65rem;
}

.yb-scroller-header p {
  font-size: 1.05rem;
  color: var(--yb-text-muted);
  max-width: 680px;
  margin: 0 auto;
}

.yb-sticky-scroller-grid {
  display: grid;
  grid-template-columns: 380px 1fr;
  gap: 3.5rem;
  align-items: flex-start;
}

/* Sticky Left Frame */
.yb-story-sticky-col {
  position: sticky;
  top: 100px;
  z-index: 10;
}

.yb-story-mockup-frame {
  background: #111827;
  border-radius: 28px;
  border: 6px solid #1F2937;
  overflow: hidden;
  box-shadow: var(--yb-shadow-lg);
  aspect-ratio: 1/1;
  position: relative;
}

.yb-story-mockup-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: opacity 0.3s ease, transform 0.3s ease;
}

.yb-story-step-badge {
  position: absolute;
  top: 16px;
  left: 16px;
  background: rgba(17, 24, 39, 0.85);
  color: #FFFFFF;
  backdrop-filter: blur(8px);
  padding: 6px 14px;
  border-radius: var(--yb-radius-pill);
  font-size: 0.78rem;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  border: 1px solid rgba(255, 255, 255, 0.15);
}

/* Right Scrolling Chapters */
.yb-story-scroll-col {
  display: flex;
  flex-direction: column;
  gap: 2.25rem;
}

.yb-story-chapter-card {
  background: var(--yb-bg-page);
  border: 1.5px solid #E5E7EB;
  border-radius: var(--yb-radius-lg);
  padding: 2.25rem 2rem;
  transition: all 0.25s ease;
}

.yb-story-chapter-card.active {
  border-color: var(--yb-red-main);
  background: #FFFFFF;
  box-shadow: 0 10px 30px rgba(229, 57, 53, 0.08);
}

.yb-chapter-kicker {
  font-size: 0.8rem;
  font-weight: 800;
  text-transform: uppercase;
  color: var(--yb-red-main);
  letter-spacing: 0.06em;
  margin-bottom: 0.4rem;
}

.yb-story-chapter-card h3 {
  font-family: var(--yb-font-heading);
  font-size: 1.4rem;
  font-weight: 800;
  color: var(--yb-text-dark);
  margin-bottom: 0.85rem;
}

.yb-story-chapter-card p {
  font-size: 1.02rem;
  line-height: 1.7;
  color: var(--yb-text-body);
}

@media (max-width: 880px) {
  .yb-sticky-scroller-grid {
    grid-template-columns: 1fr;
    gap: 2rem;
  }
  .yb-story-sticky-col {
    position: relative;
    top: 0;
    max-width: 320px;
    margin: 0 auto;
  }
}

/* ==========================================================================
   7. The ADAPT Method™ (Front and Center 2-Column Breakdown)
   ========================================================================== */
.yb-adapt-section {
  padding: 5rem 0;
  background: var(--yb-bg-page);
}

.yb-adapt-header {
  text-align: center;
  margin-bottom: 3.5rem;
}

.yb-adapt-header h2 {
  font-family: var(--yb-font-heading);
  font-size: clamp(2rem, 3.8vw, 2.8rem);
  font-weight: 900;
  color: var(--yb-text-dark);
  margin-bottom: 0.5rem;
}

.yb-adapt-header p {
  font-size: 1.05rem;
  color: var(--yb-text-muted);
  max-width: 720px;
  margin: 0 auto;
}

.yb-adapt-grid {
  display: grid;
  grid-template-columns: 1.2fr 1fr;
  gap: 3rem;
  align-items: center;
}

.yb-adapt-pillars-list {
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
}

.yb-adapt-letter-card {
  display: flex;
  align-items: flex-start;
  gap: 1.25rem;
  background: var(--yb-bg-white);
  border: 1px solid #E5E7EB;
  border-radius: var(--yb-radius-md);
  padding: 1.5rem 1.6rem;
  box-shadow: var(--yb-shadow-sm);
  transition: transform 0.2s ease, border-color 0.2s ease;
}

.yb-adapt-letter-card:hover {
  transform: translateY(-2px);
  border-color: var(--yb-red-main);
}

.yb-letter-badge {
  width: 48px;
  height: 48px;
  border-radius: 12px;
  background: var(--yb-red-main);
  color: #FFFFFF;
  font-family: var(--yb-font-heading);
  font-size: 1.6rem;
  font-weight: 900;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.yb-letter-body h4 {
  font-family: var(--yb-font-heading);
  font-size: 1.2rem;
  font-weight: 800;
  color: var(--yb-text-dark);
  margin-bottom: 0.35rem;
}

.yb-letter-body p {
  font-size: 0.95rem;
  color: var(--yb-text-body);
  line-height: 1.55;
}

/* Why It Works Side Card */
.yb-adapt-why-card {
  background: var(--yb-bg-white);
  border: 2px solid var(--yb-red-main);
  border-radius: var(--yb-radius-lg);
  padding: 2.5rem 2.25rem;
  box-shadow: var(--yb-shadow-md);
}

.yb-adapt-why-card h3 {
  font-family: var(--yb-font-heading);
  font-size: 1.5rem;
  font-weight: 900;
  color: var(--yb-text-dark);
  margin-bottom: 1.25rem;
}

.yb-adapt-checklist {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.yb-adapt-check-item {
  display: flex;
  align-items: flex-start;
  gap: 0.75rem;
  font-size: 0.98rem;
  line-height: 1.55;
}

.yb-adapt-check-item span.icon {
  color: var(--yb-green-main);
  font-weight: 800;
  font-size: 1.15rem;
  margin-top: 1px;
}

@media (max-width: 900px) {
  .yb-adapt-grid {
    grid-template-columns: 1fr;
    gap: 2rem;
  }
}

/* ==========================================================================
   8. The 7-Day Program Curriculum (Benefit-Led)
   ========================================================================== */
.yb-curriculum-section {
  padding: 5rem 0;
  background: var(--yb-bg-white);
}

.yb-curriculum-header {
  text-align: center;
  margin-bottom: 3.5rem;
}

.yb-curriculum-header h2 {
  font-family: var(--yb-font-heading);
  font-size: clamp(2rem, 3.8vw, 2.8rem);
  font-weight: 900;
  color: var(--yb-text-dark);
  margin-bottom: 0.5rem;
}

.yb-curriculum-header p {
  font-size: 1.05rem;
  color: var(--yb-text-muted);
  max-width: 680px;
  margin: 0 auto;
}

.yb-curriculum-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: 1.5rem;
  max-width: 1040px;
  margin: 0 auto;
}

.yb-curriculum-card {
  background: var(--yb-bg-page);
  border: 1px solid #E5E7EB;
  border-radius: var(--yb-radius-md);
  padding: 1.85rem 1.6rem;
  box-shadow: var(--yb-shadow-sm);
  transition: all 0.2s ease;
  display: flex;
  flex-direction: column;
}

.yb-curriculum-card:hover {
  transform: translateY(-3px);
  border-color: var(--yb-red-main);
  box-shadow: var(--yb-shadow-md);
}

.yb-day-badge {
  display: inline-block;
  background: var(--yb-red-soft);
  color: var(--yb-red-main);
  border: 1px solid var(--yb-red-border);
  font-size: 0.76rem;
  font-weight: 800;
  text-transform: uppercase;
  padding: 0.25rem 0.65rem;
  border-radius: var(--yb-radius-pill);
  margin-bottom: 0.65rem;
  width: fit-content;
}

.yb-curriculum-card h4 {
  font-family: var(--yb-font-heading);
  font-size: 1.22rem;
  font-weight: 800;
  color: var(--yb-text-dark);
  margin-bottom: 0.5rem;
}

.yb-curriculum-card p {
  font-size: 0.94rem;
  color: var(--yb-text-body);
  line-height: 1.55;
  margin-bottom: 0.85rem;
}

.yb-curriculum-benefit {
  background: #FFFFFF;
  border-left: 3px solid var(--yb-red-main);
  padding: 0.65rem 0.85rem;
  border-radius: 0 6px 6px 0;
  font-size: 0.86rem;
  color: var(--yb-text-dark);
  font-weight: 600;
  margin-top: auto;
}

/* ==========================================================================
   9. The 6 Everyday Desires / What Mums Miss Most
   ========================================================================== */
.yb-desires-section {
  padding: 5rem 0;
  background: var(--yb-bg-page);
}

.yb-desires-header {
  text-align: center;
  margin-bottom: 3.5rem;
}

.yb-desires-header h2 {
  font-family: var(--yb-font-heading);
  font-size: clamp(2rem, 3.8vw, 2.8rem);
  font-weight: 900;
  color: var(--yb-text-dark);
  margin-bottom: 0.5rem;
}

.yb-desires-header p {
  font-size: 1.05rem;
  color: var(--yb-text-muted);
  max-width: 720px;
  margin: 0 auto;
}

.yb-desires-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
}

.yb-desire-card {
  background: var(--yb-bg-white);
  border: 1px solid #E5E7EB;
  border-radius: var(--yb-radius-lg);
  padding: 2rem 1.6rem;
  box-shadow: var(--yb-shadow-sm);
  display: flex;
  flex-direction: column;
}

.yb-desire-icon {
  font-size: 2.2rem;
  margin-bottom: 1rem;
}

.yb-desire-card h4 {
  font-family: var(--yb-font-heading);
  font-size: 1.25rem;
  font-weight: 800;
  color: var(--yb-text-dark);
  margin-bottom: 0.65rem;
}

.yb-desire-card p {
  font-size: 0.95rem;
  color: var(--yb-text-body);
  line-height: 1.6;
}

@media (max-width: 900px) {
  .yb-desires-grid {
    grid-template-columns: 1fr;
    max-width: 520px;
    margin: 0 auto;
  }
}

/* ==========================================================================
   10. Editorial Deep Dive (Common Enemy, Palliative Danger, Core Narrative)
   ========================================================================== */
.yb-editorial-section {
  padding: 5rem 0 4rem;
  background: var(--yb-bg-white);
}

.yb-editorial-heading {
  font-family: var(--yb-font-heading);
  font-size: clamp(1.85rem, 3.2vw, 2.5rem);
  font-weight: 900;
  color: var(--yb-text-dark);
  line-height: 1.25;
  margin-bottom: 1.5rem;
  letter-spacing: -0.02em;
}

.yb-editorial-lead {
  font-size: 1.15rem;
  font-weight: 600;
  color: var(--yb-red-dark);
  line-height: 1.6;
  margin-bottom: 1.5rem;
}

.yb-editorial-text p {
  font-size: 1.05rem;
  line-height: 1.75;
  color: var(--yb-text-body);
  margin-bottom: 1.5rem;
}

.yb-callout-quote {
  background: var(--yb-red-soft);
  border-left: 5px solid var(--yb-red-main);
  border-radius: 0 var(--yb-radius-md) var(--yb-radius-md) 0;
  padding: 1.5rem 1.75rem;
  margin: 2rem 0;
  font-family: var(--yb-font-heading);
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--yb-red-dark);
  line-height: 1.5;
}

.yb-callout-warning {
  background: #FFF5F5;
  border-left: 5px solid var(--yb-red-main);
  border-radius: 0 var(--yb-radius-md) var(--yb-radius-md) 0;
  padding: 1.5rem 1.75rem;
  margin: 2rem 0;
  color: #991B1B;
}

.yb-callout-warning h4 {
  font-family: var(--yb-font-heading);
  font-size: 1.15rem;
  font-weight: 800;
  margin-bottom: 0.4rem;
  color: #7F1D1D;
}

.yb-callout-warning p {
  font-size: 0.98rem;
  line-height: 1.55;
  margin-bottom: 0;
  color: #991B1B;
}

/* ==========================================================================
   11. Anatomy & Science Deep Dive
   ========================================================================== */
.yb-anatomy-section {
  padding: 4.5rem 0;
  background: var(--yb-bg-page);
}

.yb-anatomy-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 3rem;
  align-items: center;
}

.yb-anatomy-card {
  background: var(--yb-bg-white);
  border-radius: var(--yb-radius-lg);
  padding: 2rem;
  border: 1px solid #E5E7EB;
  box-shadow: var(--yb-shadow-md);
  text-align: center;
}

.yb-anatomy-graphic {
  max-width: 100%;
  height: auto;
  border-radius: var(--yb-radius-md);
  margin-bottom: 1rem;
}

.yb-anatomy-caption {
  font-size: 0.82rem;
  color: var(--yb-text-muted);
  font-style: italic;
}

.yb-anatomy-content h2 {
  font-family: var(--yb-font-heading);
  font-size: clamp(1.8rem, 3vw, 2.3rem);
  font-weight: 900;
  color: var(--yb-text-dark);
  line-height: 1.25;
  margin-bottom: 1.25rem;
}

.yb-anatomy-content p {
  font-size: 1.02rem;
  line-height: 1.7;
  color: var(--yb-text-body);
  margin-bottom: 1.25rem;
}

.yb-anatomy-bullets {
  list-style: none;
  margin-top: 1.25rem;
}

.yb-anatomy-item {
  display: flex;
  align-items: flex-start;
  gap: 0.75rem;
  font-size: 0.98rem;
  line-height: 1.5;
  margin-bottom: 0.85rem;
  color: var(--yb-text-body);
}

.yb-check-icon {
  color: var(--yb-green-main);
  font-weight: 800;
  font-size: 1.1rem;
  line-height: 1;
  margin-top: 2px;
}

@media (max-width: 860px) {
  .yb-anatomy-grid {
    grid-template-columns: 1fr;
    gap: 2rem;
  }
}

/* ==========================================================================
   12. Diagnostic Grid (4 Phone Cards)
   ========================================================================== */
.yb-diagnostic-section {
  padding: 4.5rem 0;
  background: var(--yb-bg-white);
  text-align: center;
}

.yb-diagnostic-heading {
  font-family: var(--yb-font-heading);
  font-size: clamp(1.9rem, 3.5vw, 2.6rem);
  font-weight: 900;
  color: var(--yb-text-dark);
  margin-bottom: 0.5rem;
}

.yb-diagnostic-subhead {
  font-size: 1rem;
  color: var(--yb-text-muted);
  max-width: 650px;
  margin: 0 auto 2.5rem;
}

.yb-phone-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1.5rem;
}

.yb-phone-card {
  background: var(--yb-bg-page);
  border: 1px solid #E5E7EB;
  border-radius: var(--yb-radius-lg);
  padding: 1.5rem 1rem 1.25rem;
  box-shadow: var(--yb-shadow-sm);
  display: flex;
  flex-direction: column;
  align-items: center;
  transition: all 0.25s ease;
}

.yb-phone-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--yb-shadow-md);
  border-color: #CBD5E1;
}

.yb-phone-frame {
  width: 100%;
  max-width: 190px;
  height: 270px;
  background: #111827;
  border-radius: 28px;
  border: 5px solid #1F2937;
  overflow: hidden;
  position: relative;
  box-shadow: 0 10px 25px rgba(0, 0, 0, 0.15);
  margin-bottom: 1.15rem;
}

.yb-phone-screen {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.yb-phone-title {
  font-family: var(--yb-font-heading);
  font-size: 1.05rem;
  font-weight: 800;
  color: var(--yb-text-dark);
  margin-bottom: 0.35rem;
}

.yb-phone-desc {
  font-size: 0.82rem;
  color: var(--yb-text-muted);
  line-height: 1.45;
}

@media (max-width: 991px) {
  .yb-phone-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 575px) {
  .yb-phone-grid {
    grid-template-columns: 1fr;
    max-width: 320px;
    margin: 0 auto;
  }
}

/* ==========================================================================
   13. The Big Product Buy Box
   ========================================================================== */
.yb-checkout-section {
  padding: 5rem 0;
  background: var(--yb-bg-page);
  text-align: center;
}

.yb-checkout-title {
  font-family: var(--yb-font-heading);
  font-size: clamp(2rem, 3.8vw, 2.9rem);
  font-weight: 900;
  color: var(--yb-text-dark);
  margin-bottom: 0.4rem;
}

.yb-checkout-proof {
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--yb-text-muted);
  margin-bottom: 2.25rem;
}

.yb-checkout-card {
  background: var(--yb-bg-white);
  border: 1px solid #CBD5E1;
  border-radius: var(--yb-radius-lg);
  padding: 2.75rem 2.5rem;
  box-shadow: var(--yb-shadow-lg);
  max-width: 880px;
  margin: 0 auto;
  text-align: left;
}

.yb-checkout-grid {
  display: grid;
  grid-template-columns: 320px 1fr;
  gap: 2.5rem;
  align-items: center;
}

.yb-checkout-mockup {
  border-radius: var(--yb-radius-md);
  overflow: hidden;
  box-shadow: 0 10px 30px rgba(0,0,0,0.12);
  background: #FFFFFF;
}

.yb-checkout-details h3 {
  font-family: var(--yb-font-heading);
  font-size: 1.15rem;
  font-weight: 800;
  color: var(--yb-text-dark);
  text-transform: uppercase;
  letter-spacing: 0.04em;
  margin-top: 1.25rem;
  margin-bottom: 0.5rem;
}

.yb-checkout-details h3:first-child {
  margin-top: 0;
}

.yb-checkout-list {
  list-style: none;
  font-size: 0.92rem;
  color: var(--yb-text-body);
  line-height: 1.5;
}

.yb-checkout-list li {
  position: relative;
  padding-left: 1.25rem;
  margin-bottom: 0.35rem;
}

.yb-checkout-list li::before {
  content: '•';
  position: absolute;
  left: 0;
  color: var(--yb-red-main);
  font-weight: bold;
}

.yb-price-box {
  background: var(--yb-bg-page);
  border: 1px solid #E2E8F0;
  border-radius: var(--yb-radius-md);
  padding: 1.5rem;
  text-align: center;
  margin-top: 1.75rem;
}

.yb-price-original {
  font-size: 0.95rem;
  color: var(--yb-text-muted);
  margin-bottom: 0.2rem;
}

.yb-price-original strike {
  color: #9CA3AF;
}

.yb-price-save {
  font-family: var(--yb-font-heading);
  font-size: 1rem;
  font-weight: 800;
  color: var(--yb-green-main);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: 0.25rem;
}

.yb-price-discount {
  font-family: var(--yb-font-heading);
  font-size: clamp(2.4rem, 4vw, 3.2rem);
  font-weight: 900;
  color: var(--yb-text-dark);
  line-height: 1.1;
  margin-bottom: 1.25rem;
}

.yb-price-cta-btn {
  display: block;
  width: 100%;
  background: linear-gradient(135deg, #FF3B30 0%, var(--yb-red-main) 100%);
  color: #FFFFFF;
  font-family: var(--yb-font-heading);
  font-size: 1.2rem;
  font-weight: 900;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  padding: 1.15rem 1.5rem;
  border-radius: var(--yb-radius-pill);
  box-shadow: var(--yb-shadow-cta);
  transition: all 0.2s ease;
  border: none;
  cursor: pointer;
  text-align: center;
  margin-bottom: 0.85rem;
}

.yb-price-cta-btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 14px 32px rgba(229, 57, 53, 0.45);
}

.yb-payment-icons {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.65rem;
  font-size: 0.76rem;
  color: var(--yb-text-muted);
  font-weight: 600;
  margin-top: 0.65rem;
}

@media (max-width: 768px) {
  .yb-checkout-grid {
    grid-template-columns: 1fr;
    gap: 1.75rem;
  }
  .yb-checkout-card {
    padding: 1.75rem 1.25rem;
  }
}

/* ==========================================================================
   14. Free Bonuses Section (5 Bonuses without community)
   ========================================================================== */
.yb-bonuses-section {
  padding: 5rem 0;
  background: var(--yb-bg-white);
  text-align: center;
}

.yb-bonuses-heading {
  font-family: var(--yb-font-heading);
  font-size: clamp(1.9rem, 3.5vw, 2.6rem);
  font-weight: 900;
  color: var(--yb-text-dark);
  margin-bottom: 0.35rem;
}

.yb-bonuses-subhead {
  font-size: 1rem;
  color: var(--yb-text-muted);
  margin-bottom: 2.75rem;
}

.yb-bonus-card {
  background: var(--yb-bg-page);
  border: 1px solid #E5E7EB;
  border-radius: var(--yb-radius-lg);
  padding: 2rem;
  margin-bottom: 1.75rem;
  box-shadow: var(--yb-shadow-sm);
  display: grid;
  grid-template-columns: 240px 1fr;
  gap: 2rem;
  align-items: center;
  text-align: left;
  max-width: 860px;
  margin-inline: auto;
  transition: transform 0.2s ease;
}

.yb-bonus-card:hover {
  transform: translateY(-2px);
  box-shadow: var(--yb-shadow-md);
}

.yb-bonus-img-wrap {
  border-radius: var(--yb-radius-md);
  overflow: hidden;
  box-shadow: var(--yb-shadow-sm);
  height: 180px;
  background: #E5E7EB;
}

.yb-bonus-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.yb-bonus-badge {
  display: inline-block;
  background: var(--yb-green-soft);
  color: var(--yb-green-main);
  border: 1px solid var(--yb-green-border);
  font-size: 0.76rem;
  font-weight: 800;
  text-transform: uppercase;
  padding: 0.25rem 0.65rem;
  border-radius: var(--yb-radius-pill);
  margin-bottom: 0.65rem;
}

.yb-bonus-title {
  font-family: var(--yb-font-heading);
  font-size: 1.35rem;
  font-weight: 800;
  color: var(--yb-text-dark);
  margin-bottom: 0.5rem;
}

.yb-bonus-desc {
  font-size: 0.95rem;
  color: var(--yb-text-body);
  line-height: 1.55;
  margin-bottom: 0.75rem;
}

.yb-bonus-format {
  font-size: 0.8rem;
  color: var(--yb-text-muted);
  font-weight: 600;
}

@media (max-width: 680px) {
  .yb-bonus-card {
    grid-template-columns: 1fr;
    gap: 1.25rem;
    padding: 1.5rem;
  }
  .yb-bonus-img-wrap {
    height: 160px;
  }
}

/* ==========================================================================
   15. 100% Satisfaction Guarantee Section
   ========================================================================== */
.yb-guarantee-section {
  padding: 4.5rem 0;
  background: var(--yb-bg-page);
  text-align: center;
}

.yb-guarantee-card {
  background: var(--yb-bg-white);
  border: 1px solid #E2E8F0;
  border-radius: var(--yb-radius-lg);
  padding: 3rem 2rem;
  max-width: 760px;
  margin: 0 auto;
  box-shadow: var(--yb-shadow-md);
}

.yb-guarantee-seal {
  width: 90px;
  height: 90px;
  margin: 0 auto 1.25rem;
}

.yb-guarantee-title {
  font-family: var(--yb-font-heading);
  font-size: clamp(1.8rem, 3.2vw, 2.3rem);
  font-weight: 900;
  color: var(--yb-text-dark);
  margin-bottom: 1rem;
}

.yb-guarantee-text {
  font-size: 1.02rem;
  color: var(--yb-text-body);
  line-height: 1.65;
  max-width: 620px;
  margin: 0 auto;
}

/* ==========================================================================
   16. Customer Reviews Section (3-Column Cards)
   ========================================================================== */
.yb-reviews-section {
  padding: 4.5rem 0;
  background: var(--yb-bg-white);
  text-align: center;
}

.yb-reviews-heading {
  font-family: var(--yb-font-heading);
  font-size: clamp(1.9rem, 3.5vw, 2.6rem);
  font-weight: 900;
  color: var(--yb-text-dark);
  margin-bottom: 0.5rem;
}

.yb-reviews-subhead {
  font-size: 0.95rem;
  color: var(--yb-text-muted);
  font-weight: 600;
  margin-bottom: 2.75rem;
}

.yb-reviews-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
  text-align: left;
}

.yb-review-card {
  background: var(--yb-bg-page);
  border: 1px solid #E5E7EB;
  border-radius: var(--yb-radius-lg);
  padding: 1.75rem;
  box-shadow: var(--yb-shadow-sm);
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}

.yb-review-stars {
  color: var(--yb-gold-stars);
  letter-spacing: 2px;
  font-size: 1rem;
  margin-bottom: 0.65rem;
}

.yb-review-title {
  font-family: var(--yb-font-heading);
  font-size: 1.12rem;
  font-weight: 800;
  color: var(--yb-text-dark);
  margin-bottom: 0.65rem;
}

.yb-review-quote {
  font-size: 0.94rem;
  color: var(--yb-text-body);
  line-height: 1.6;
  margin-bottom: 1.25rem;
  flex: 1;
}

.yb-review-author {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  border-top: 1px solid #E5E7EB;
  padding-top: 0.85rem;
}

.yb-author-avatar {
  width: 42px;
  height: 42px;
  border-radius: 50%;
  object-fit: cover;
  border: 2px solid var(--yb-red-main);
}

.yb-author-info strong {
  font-size: 0.9rem;
  color: var(--yb-text-dark);
  display: block;
}

.yb-author-info span {
  font-size: 0.76rem;
  color: var(--yb-text-muted);
}

@media (max-width: 900px) {
  .yb-reviews-grid {
    grid-template-columns: 1fr;
    max-width: 500px;
    margin: 0 auto;
  }
}

/* ==========================================================================
   17. Frequently Asked Questions (Accordion)
   ========================================================================== */
.yb-faq-section {
  padding: 4.5rem 0;
  background: var(--yb-bg-page);
}

.yb-faq-heading {
  font-family: var(--yb-font-heading);
  font-size: clamp(1.9rem, 3.5vw, 2.6rem);
  font-weight: 900;
  color: var(--yb-text-dark);
  text-align: center;
  margin-bottom: 2.5rem;
}

.yb-faq-list {
  max-width: 760px;
  margin: 0 auto;
  border-top: 1px solid #E5E7EB;
}

.yb-faq-item {
  border-bottom: 1px solid #E5E7EB;
}

.yb-faq-question {
  width: 100%;
  padding: 1.25rem 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
  background: none;
  border: none;
  text-align: left;
  font-family: var(--yb-font-heading);
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--yb-text-dark);
  cursor: pointer;
}

.yb-faq-icon {
  font-size: 1.4rem;
  font-weight: 400;
  color: var(--yb-text-muted);
  transition: transform 0.2s ease;
}

.yb-faq-item.active .yb-faq-icon {
  transform: rotate(45deg);
  color: var(--yb-red-main);
}

.yb-faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.3s ease, padding 0.3s ease;
  font-size: 0.98rem;
  color: var(--yb-text-body);
  line-height: 1.65;
}

.yb-faq-item.active .yb-faq-answer {
  max-height: 400px;
  padding-bottom: 1.25rem;
}

/* ==========================================================================
   18. About the Instructor Section
   ========================================================================== */
.yb-instructor-section {
  padding: 4.5rem 0;
  background: var(--yb-bg-white);
}

.yb-instructor-grid {
  display: grid;
  grid-template-columns: 280px 1fr;
  gap: 3rem;
  align-items: flex-start;
  max-width: 860px;
  margin: 0 auto;
}

.yb-instructor-media {
  text-align: center;
}

.yb-instructor-photo {
  width: 100%;
  border-radius: var(--yb-radius-lg);
  box-shadow: var(--yb-shadow-md);
  border: 1px solid #E5E7EB;
  margin-bottom: 0.75rem;
}

.yb-instructor-sig {
  font-family: var(--yb-font-note);
  font-size: 1.6rem;
  color: var(--yb-red-dark);
  line-height: 1;
  margin-top: 0.5rem;
}

.yb-instructor-role {
  font-size: 0.78rem;
  font-weight: 700;
  color: var(--yb-text-muted);
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

.yb-instructor-content h2 {
  font-family: var(--yb-font-heading);
  font-size: clamp(1.8rem, 3.2vw, 2.3rem);
  font-weight: 900;
  color: var(--yb-text-dark);
  margin-bottom: 1.25rem;
}

.yb-instructor-content p {
  font-size: 1.02rem;
  line-height: 1.7;
  color: var(--yb-text-body);
  margin-bottom: 1.25rem;
}

@media (max-width: 768px) {
  .yb-instructor-grid {
    grid-template-columns: 1fr;
    gap: 2rem;
  }
  .yb-instructor-media {
    max-width: 240px;
    margin: 0 auto;
  }
}

/* ==========================================================================
   19. Footer
   ========================================================================== */
.yb-footer {
  background: #111827;
  color: #9CA3AF;
  padding: 3.5rem 0 2.5rem;
  font-size: 0.85rem;
  line-height: 1.6;
}

.yb-footer a {
  color: #D1D5DB;
  transition: color 0.15s ease;
}

.yb-footer a:hover {
  color: #FFFFFF;
}

.yb-footer-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr;
  gap: 2.5rem;
  margin-bottom: 2.5rem;
}

.yb-footer-brand h4 {
  font-family: var(--yb-font-heading);
  font-size: 1.2rem;
  font-weight: 800;
  color: #FFFFFF;
  margin-bottom: 0.5rem;
}

.yb-footer-col h5 {
  font-family: var(--yb-font-heading);
  font-size: 0.95rem;
  font-weight: 700;
  color: #FFFFFF;
  margin-bottom: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

.yb-footer-links {
  list-style: none;
}

.yb-footer-links li {
  margin-bottom: 0.4rem;
}

.yb-footer-legal-notice {
  border-top: 1px solid #1F2937;
  padding-top: 1.5rem;
  font-size: 0.76rem;
  line-height: 1.55;
  color: #6B7280;
}

.yb-footer-legal-notice p {
  margin-bottom: 0.75rem;
}

@media (max-width: 768px) {
  .yb-footer-grid {
    grid-template-columns: 1fr;
    gap: 1.75rem;
  }
}