:root {
  /* Dynamic Custom CSS Variables for Vision Health Topic */
  --optics-canvas-bg: #f4f7f6;
  --optics-surface-card: #ffffff;
  --optics-primary-navy: #0f172a;
  --optics-amber-tone: #d97706;
  --optics-amber-hover: #b45309;
  --optics-teal-glow: #0284c7;
  --optics-text-charcoal: #1e293b;
  --optics-text-muted: #64748b;
  --optics-light-border: #e2e8f0;
  --optics-hero-gradient: linear-gradient(135deg, rgba(15, 23, 42, 0.88) 0%, rgba(30, 41, 59, 0.92) 100%);
  
  --font-display: 'Montserrat', sans-serif;
  --font-body: 'Inter', sans-serif;
  
  --optics-radius-soft: 16px;
  --optics-radius-pill: 999px;
  --optics-radius-deep: 24px;
}

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

body {
  font-family: var(--font-body);
  background-color: var(--optics-canvas-bg);
  color: var(--optics-text-charcoal);
  line-height: 1.6;
  overflow-x: hidden;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

main {
  flex: 1 0 auto;
}

/* Scroll Progress Bar */
.optics-scroll-progress {
  position: fixed;
  top: 0;
  left: 0;
  height: 4px;
  background: var(--optics-amber-tone);
  z-index: 10000;
  width: 100%;
  transform-origin: left;
  animation: optics-progress-growth auto linear;
  animation-timeline: scroll(root block);
}

@keyframes optics-progress-growth {
  0% { transform: scaleX(0); }
  100% { transform: scaleX(1); }
}

/* Header & Nav (Preset K Layout) */
.optics-top-header {
  position: sticky;
  top: 0;
  background-color: #ffffff;
  z-index: 1000;
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
  padding: 1rem 0;
}

.optics-header-shell {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 1.5rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.optics-brand-symbol {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  text-decoration: none;
  color: var(--optics-primary-navy);
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.2rem;
}

.optics-brand-symbol svg {
  color: var(--optics-amber-tone);
}

.optics-navigation-links {
  display: flex;
  gap: 2rem;
  align-items: center;
}

.optics-navigation-links a {
  text-decoration: none;
  color: var(--optics-text-charcoal);
  font-weight: 500;
  font-size: 0.95rem;
  transition: color 0.3s ease;
}

.optics-navigation-links a:hover,
.optics-navigation-links a.optics-link-active {
  color: var(--optics-amber-tone);
}

.optics-drawer-checkbox,
.optics-drawer-trigger {
  display: none;
}

/* Hero Section (Preset K - Layered Depth Panel Stack) */
.vis-hero-layer-stack {
  position: relative;
  min-height: 85vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 4rem 1.5rem;
  overflow: hidden;
}

.vis-hero-bg-holder {
  position: absolute;
  inset: 0;
  background-size: cover;
  background-position: center;
  z-index: 1;
}

.vis-hero-back-panel {
  position: absolute;
  width: 75%;
  max-width: 850px;
  height: 70%;
  background-color: rgba(2, 132, 199, 0.15);
  border-radius: var(--optics-radius-deep);
  transform: rotate(-3deg) translateY(-10px);
  z-index: 2;
  backdrop-filter: blur(4px);
}

.vis-hero-mid-panel {
  position: absolute;
  width: 70%;
  max-width: 800px;
  height: 65%;
  background-color: rgba(217, 119, 6, 0.2);
  border-radius: var(--optics-radius-deep);
  transform: rotate(2deg) translateY(10px);
  z-index: 3;
}

.vis-hero-card-front {
  position: relative;
  z-index: 4;
  max-width: 720px;
  background: #ffffff;
  padding: 3.5rem 3rem;
  border-radius: var(--optics-radius-deep);
  box-shadow: 0 30px 80px rgba(0, 0, 0, 0.2);
  text-align: center;
  animation: optics-fade-up 0.8s ease-out forwards;
}

.vis-badge-tag {
  display: inline-block;
  background-color: rgba(217, 119, 6, 0.1);
  color: var(--optics-amber-tone);
  padding: 0.4rem 1.2rem;
  border-radius: var(--optics-radius-pill);
  font-size: 0.85rem;
  font-weight: 600;
  margin-bottom: 1.2rem;
}

.vis-hero-card-front h1 {
  font-family: var(--font-display);
  font-size: 2.5rem;
  color: var(--optics-primary-navy);
  line-height: 1.2;
  margin-bottom: 1.2rem;
}

.vis-hero-card-front p {
  color: var(--optics-text-muted);
  font-size: 1.1rem;
  margin-bottom: 2rem;
}

.vis-action-group {
  display: flex;
  gap: 1rem;
  justify-content: center;
  flex-wrap: wrap;
}

/* Buttons */
.optics-btn-pill-primary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background-color: var(--optics-amber-tone);
  color: #ffffff;
  padding: 0.9rem 2rem;
  border-radius: var(--optics-radius-pill);
  text-decoration: none;
  font-weight: 600;
  transition: all 0.3s ease;
  box-shadow: 0 10px 25px rgba(217, 119, 6, 0.3);
  border: none;
  cursor: pointer;
}

.optics-btn-pill-primary:hover {
  background-color: var(--optics-amber-hover);
  transform: translateY(-2px);
  box-shadow: 0 14px 30px rgba(217, 119, 6, 0.4);
}

.optics-btn-pill-secondary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background-color: transparent;
  color: var(--optics-primary-navy);
  padding: 0.9rem 2rem;
  border-radius: var(--optics-radius-pill);
  text-decoration: none;
  font-weight: 600;
  border: 2px solid var(--optics-primary-navy);
  transition: all 0.3s ease;
}

.optics-btn-pill-secondary:hover {
  background-color: var(--optics-primary-navy);
  color: #ffffff;
}

.optics-btn-block {
  width: 100%;
}

/* Content Section Overlap (Preset K) */
.vision-content-overlap {
  max-width: 1200px;
  margin: 4rem auto;
  padding: 0 1.5rem;
}

.vision-frame-wrapper {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 3rem;
  align-items: center;
}

.vision-floating-image-frame {
  position: relative;
  border-radius: var(--optics-radius-deep);
  box-shadow: 0 25px 60px rgba(0,0,0,0.18);
  overflow: hidden;
}

.vision-floating-image-frame img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

.vision-raised-text-panel {
  background: var(--optics-surface-card);
  padding: 2.5rem;
  border-radius: 12px;
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.1);
}

.vision-raised-text-panel h2 {
  font-family: var(--font-display);
  font-size: 2rem;
  color: var(--optics-primary-navy);
  margin-bottom: 1.2rem;
}

.vision-raised-text-panel p {
  color: var(--optics-text-muted);
  margin-bottom: 1rem;
}

/* Features Section (Levitating Cards) */
.vision-habit-deck {
  max-width: 1200px;
  margin: 6rem auto 4rem;
  padding: 0 1.5rem;
}

.vision-section-header {
  text-align: center;
  margin-bottom: 3.5rem;
}

.vision-section-header h2 {
  font-family: var(--font-display);
  font-size: 2.2rem;
  color: var(--optics-primary-navy);
  margin-bottom: 0.5rem;
}

.vision-section-header p {
  color: var(--optics-text-muted);
}

.vision-cards-floating-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 2rem;
  margin-top: -20px;
}

.vision-levitate-card {
  background: var(--optics-surface-card);
  padding: 2.5rem 2rem;
  border-radius: var(--optics-radius-soft);
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.12);
  transition: transform 0.3s ease, box-shadow 0.3s ease;
  position: relative;
  z-index: 10;
}

.vision-levitate-card:hover {
  transform: translateY(-12px);
  box-shadow: 0 30px 70px rgba(0, 0, 0, 0.18);
}

.vision-card-icon-box {
  width: 56px;
  height: 56px;
  background-color: rgba(2, 132, 199, 0.1);
  color: var(--optics-teal-glow);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 1.5rem;
}

.vision-levitate-card h3 {
  font-family: var(--font-display);
  font-size: 1.3rem;
  color: var(--optics-primary-navy);
  margin-bottom: 0.8rem;
}

.vision-levitate-card p {
  color: var(--optics-text-muted);
  font-size: 0.95rem;
}

/* How It Works (Elevated Pill Cards) */
.vision-steps-flow {
  max-width: 1200px;
  margin: 5rem auto;
  padding: 0 1.5rem;
}

.vision-steps-horizontal {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 1.5rem;
}

.vision-pill-step {
  background: var(--optics-surface-card);
  border-radius: var(--optics-radius-pill);
  padding: 1.5rem 2.5rem;
  box-shadow: 0 12px 30px rgba(0,0,0,0.12);
  display: flex;
  align-items: center;
  gap: 1.5rem;
}

.vision-step-num {
  font-family: var(--font-display);
  font-size: 1.8rem;
  font-weight: 800;
  color: var(--optics-amber-tone);
}

.vision-step-body h4 {
  font-size: 1.1rem;
  color: var(--optics-primary-navy);
  margin-bottom: 0.2rem;
}

.vision-step-body p {
  font-size: 0.88rem;
  color: var(--optics-text-muted);
}

/* CTA Strip (Centered Floating Panel 65% width) */
.vision-cta-strip-holder {
  max-width: 1200px;
  margin: 6rem auto;
  padding: 0 1.5rem;
}

.vision-cta-floating-panel {
  width: 85%;
  max-width: 800px;
  margin: 0 auto;
  background: var(--optics-hero-gradient);
  color: #ffffff;
  padding: 3.5rem 2.5rem;
  border-radius: var(--optics-radius-deep);
  box-shadow: 0 30px 80px rgba(0, 0, 0, 0.3);
  text-align: center;
}

.vision-cta-floating-panel h2 {
  font-family: var(--font-display);
  font-size: 2.2rem;
  margin-bottom: 1rem;
}

.vision-cta-floating-panel p {
  color: rgba(255, 255, 255, 0.85);
  margin-bottom: 2rem;
  font-size: 1.1rem;
}

/* Expert Page Specifics */
.expert-hero-floating {
  padding: 4rem 1.5rem;
  max-width: 1000px;
  margin: 0 auto;
  text-align: center;
}

.expert-hero-card {
  background: #ffffff;
  padding: 3rem 2rem;
  border-radius: var(--optics-radius-deep);
  box-shadow: 0 20px 50px rgba(0,0,0,0.1);
}

.expert-levitate-frame-zone {
  max-width: 1200px;
  margin: 3rem auto;
  padding: 0 1.5rem;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 3rem;
  align-items: center;
}

.expert-image-panel img {
  width: 100%;
  border-radius: var(--optics-radius-deep);
  box-shadow: 0 25px 60px rgba(0,0,0,0.15);
}

.expert-pills-stats {
  max-width: 1200px;
  margin: 4rem auto;
  padding: 0 1.5rem;
  display: flex;
  justify-content: center;
  gap: 1.5rem;
  flex-wrap: wrap;
}

.expert-pill-stat-item {
  background: #ffffff;
  border-radius: var(--optics-radius-pill);
  padding: 1rem 2.5rem;
  box-shadow: 0 12px 30px rgba(0,0,0,0.1);
  display: flex;
  align-items: center;
  gap: 1rem;
}

.expert-stat-number {
  font-family: var(--font-display);
  font-size: 1.6rem;
  font-weight: 800;
  color: var(--optics-teal-glow);
}

.expert-stat-label {
  font-size: 0.9rem;
  color: var(--optics-text-charcoal);
  font-weight: 600;
}

.expert-cards-container {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 2rem;
}

.expert-secondary-media {
  max-width: 1200px;
  margin: 5rem auto;
  padding: 0 1.5rem;
}

.expert-media-floating-card {
  position: relative;
  border-radius: var(--optics-radius-deep);
  overflow: hidden;
  box-shadow: 0 25px 60px rgba(0,0,0,0.15);
  max-height: 400px;
}

.expert-media-floating-card img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

.expert-media-overlay-content {
  position: absolute;
  inset: 0;
  background: linear-gradient(0deg, rgba(15, 23, 42, 0.9) 0%, rgba(15, 23, 42, 0.2) 100%);
  color: #ffffff;
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  padding: 2.5rem;
}

/* Reserve Page Specifics */
.reserve-hero-floating {
  max-width: 800px;
  margin: 3rem auto 2rem;
  text-align: center;
  padding: 0 1.5rem;
}

.reserve-hero-content h1 {
  font-family: var(--font-display);
  font-size: 2.4rem;
  color: var(--optics-primary-navy);
  margin-bottom: 0.8rem;
}

.reserve-main-split {
  max-width: 1200px;
  margin: 2rem auto 5rem;
  padding: 0 1.5rem;
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  gap: 3rem;
  align-items: start;
}

.reserve-form-card {
  background: #ffffff;
  padding: 3rem 2.5rem;
  border-radius: 24px;
  box-shadow: 0 30px 80px rgba(0, 0, 0, 0.15);
}

.reserve-form-card h2 {
  font-family: var(--font-display);
  font-size: 1.8rem;
  color: var(--optics-primary-navy);
  margin-bottom: 2rem;
}

.retina-form-container {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

.retina-field-group {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.retina-field-group label {
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--optics-text-charcoal);
}

.retina-field-group input,
.retina-field-group textarea {
  width: 100%;
  padding: 0.9rem 1.2rem;
  border: 1px solid var(--optics-light-border);
  border-radius: var(--optics-radius-soft);
  font-family: var(--font-body);
  font-size: 0.95rem;
  transition: border-color 0.3s ease;
}

.retina-field-group input:focus,
.retina-field-group textarea:focus {
  outline: none;
  border-color: var(--optics-teal-glow);
}

.retina-checkbox-group {
  display: flex;
  align-items: flex-start;
  gap: 0.8rem;
  font-size: 0.88rem;
  color: var(--optics-text-muted);
}

.retina-checkbox-group input {
  margin-top: 0.2rem;
}

.retina-checkbox-group a {
  color: var(--optics-amber-tone);
}

.reserve-info-cards-stack {
  display: flex;
  flex-direction: column;
  gap: 2rem;
}

.reserve-info-card {
  background: #ffffff;
  padding: 2.2rem;
  border-radius: var(--optics-radius-soft);
  box-shadow: 0 15px 40px rgba(0,0,0,0.08);
  position: relative;
}

.reserve-card-badge {
  position: absolute;
  top: 1.5rem;
  right: 1.5rem;
  background: rgba(2, 132, 199, 0.1);
  color: var(--optics-teal-glow);
  font-weight: 700;
  padding: 0.3rem 0.8rem;
  border-radius: var(--optics-radius-pill);
}

.reserve-info-card h3 {
  font-family: var(--font-display);
  font-size: 1.3rem;
  margin-bottom: 0.8rem;
  color: var(--optics-primary-navy);
}

.reserve-feature-list {
  list-style: none;
  margin-top: 1rem;
  display: flex;
  flex-direction: column;
  gap: 0.8rem;
}

.reserve-feature-list li {
  display: flex;
  align-items: center;
  gap: 0.8rem;
  font-size: 0.9rem;
  color: var(--optics-text-charcoal);
}

.reserve-bullet {
  width: 24px;
  height: 24px;
  background: var(--optics-amber-tone);
  color: #ffffff;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.75rem;
  font-weight: 700;
}

.reserve-email-link {
  color: var(--optics-teal-glow);
  font-weight: 600;
  text-decoration: none;
}

.reserve-faq-section {
  max-width: 1200px;
  margin: 4rem auto 6rem;
  padding: 0 1.5rem;
}

.reserve-faq-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 1.8rem;
}

.retina-faq-item {
  background: #ffffff;
  padding: 2rem;
  border-radius: var(--optics-radius-soft);
  box-shadow: 0 12px 35px rgba(0,0,0,0.08);
  transition: transform 0.3s ease;
}

.retina-faq-item:hover {
  transform: translateY(-6px);
}

.retina-faq-item h4 {
  font-family: var(--font-display);
  font-size: 1.1rem;
  color: var(--optics-primary-navy);
  margin-bottom: 0.8rem;
}

.retina-faq-item p {
  color: var(--optics-text-muted);
  font-size: 0.9rem;
}

/* Thank You Page */
.thank-main-container {
  max-width: 900px;
  margin: 5rem auto;
  padding: 0 1.5rem;
}

.thank-floating-card {
  background: #ffffff;
  border-radius: var(--optics-radius-deep);
  box-shadow: 0 30px 80px rgba(0,0,0,0.12);
  overflow: hidden;
  display: grid;
  grid-template-columns: 1fr 1.2fr;
  align-items: center;
}

.thank-image-frame img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

.thank-text-content {
  padding: 3rem 2.5rem;
}

.thank-text-content h1 {
  font-family: var(--font-display);
  font-size: 2rem;
  color: var(--optics-primary-navy);
  margin: 0.8rem 0;
}

.thank-text-content p {
  color: var(--optics-text-muted);
  margin-bottom: 1.5rem;
}

/* Legal Document Pages */
.legal-document-wrapper {
  max-width: 900px;
  margin: 4rem auto 6rem;
  padding: 0 1.5rem;
  min-height: 70vh;
}

.legal-floating-panel {
  background: #ffffff;
  padding: 3.5rem 3rem;
  border-radius: var(--optics-radius-deep);
  box-shadow: 0 20px 60px rgba(0,0,0,0.08);
}

.legal-floating-panel h1 {
  font-family: var(--font-display);
  font-size: 2.4rem;
  color: var(--optics-primary-navy);
  margin-bottom: 2rem;
  border-bottom: 2px solid var(--optics-light-border);
  padding-bottom: 1rem;
}

.legal-block {
  margin-bottom: 2.5rem;
}

.legal-block h2 {
  font-family: var(--font-display);
  font-size: 1.4rem;
  color: var(--optics-primary-navy);
  margin-bottom: 0.8rem;
}

.legal-block p {
  color: var(--optics-text-muted);
  line-height: 1.7;
}

/* Footer (Preset K + Required Legal) */
.optics-footer-zone {
  background-color: var(--optics-primary-navy);
  color: #ffffff;
  padding: 4rem 0 2rem;
  margin-top: auto;
}

.optics-footer-shell {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 1.5rem;
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  gap: 2rem;
}

.optics-footer-zone .optics-brand-symbol {
  color: #ffffff;
}

.optics-footer-nav {
  display: flex;
  gap: 1.8rem;
  flex-wrap: wrap;
  justify-content: center;
}

.optics-footer-nav a {
  color: rgba(255, 255, 255, 0.75);
  text-decoration: none;
  font-size: 0.9rem;
  transition: color 0.3s ease;
}

.optics-footer-nav a:hover {
  color: var(--optics-amber-tone);
}

.optics-disclaimer-box {
  max-width: 750px;
  font-size: 0.85rem;
  color: rgba(255, 255, 255, 0.55);
  line-height: 1.5;
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
  padding: 1.2rem 0;
}

.optics-copyright-text {
  font-size: 0.85rem;
  color: rgba(255, 255, 255, 0.4);
}

/* Cookie Banner */
.optics-cookie-banner {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  background-color: #ffffff;
  box-shadow: 0 -10px 40px rgba(0,0,0,0.15);
  padding: 1.5rem 2rem;
  z-index: 9999;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.5rem;
  flex-wrap: wrap;
}

.optics-cookie-banner p {
  font-size: 0.9rem;
  color: var(--optics-text-charcoal);
  max-width: 800px;
}

.optics-cookie-actions {
  display: flex;
  gap: 1rem;
}

.optics-btn-cookie-accept {
  background: var(--optics-amber-tone);
  color: #ffffff;
  border: none;
  padding: 0.6rem 1.4rem;
  border-radius: var(--optics-radius-pill);
  font-weight: 600;
  cursor: pointer;
}

.optics-btn-cookie-decline {
  background: transparent;
  color: var(--optics-text-muted);
  border: 1px solid var(--optics-light-border);
  padding: 0.6rem 1.4rem;
  border-radius: var(--optics-radius-pill);
  font-weight: 600;
  cursor: pointer;
}

/* Responsive Media Queries */
@media (max-width: 992px) {
  .vision-frame-wrapper,
  .expert-levitate-frame-zone,
  .reserve-main-split,
  .thank-floating-card {
    grid-template-columns: 1fr;
  }

  .vis-hero-card-front {
    padding: 2.5rem 1.8rem;
  }

  .vis-hero-card-front h1 {
    font-size: 2rem;
  }
}

@media (max-width: 768px) {
  .optics-drawer-trigger {
    display: flex;
    flex-direction: column;
    gap: 5px;
    cursor: pointer;
    z-index: 1001;
  }

  .optics-drawer-trigger span {
    width: 25px;
    height: 3px;
    background-color: var(--optics-primary-navy);
    border-radius: 2px;
  }

  .optics-navigation-links {
    position: fixed;
    top: 0;
    right: -100%;
    width: 80%;
    max-width: 300px;
    height: 100vh;
    background-color: #ffffff;
    box-shadow: -10px 0 30px rgba(0,0,0,0.15);
    flex-direction: column;
    padding: 6rem 2rem 2rem;
    align-items: flex-start;
    transition: right 0.3s ease;
  }

  .optics-drawer-checkbox:checked ~ .optics-navigation-links {
    right: 0;
  }

  .vision-cta-floating-panel {
    width: 95%;
    padding: 2.5rem 1.5rem;
  }
}

/* CSS Scroll Driven View Animations */
@keyframes optics-fade-up {
  from {
    opacity: 0;
    transform: translateY(30px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}