:root {
  --khp-color-primary: #1A1A1A;
  --khp-color-secondary: #2C3539;
  --khp-color-accent: #C5A059;
  --khp-color-accent-hover: #A38449;
  --khp-color-heading-light: #9a9b96;
  --khp-color-text-body: #333333;
  --khp-color-bg-light: #F9F8F6;
  --khp-color-bg-white: #FFFFFF;
  --khp-color-border: #E5E5E5;
  --khp-header-blue: #8E99AA;
  --khp-font-main: 'Montserrat', Helvetica, Arial, sans-serif;
  --khp-spacing-section: 120px;
  --khp-container-width: 1200px;
  --khp-radius: 8px;
}

html,
body {
  margin: 0;
  padding: 0;
  width: 100%;
  overflow-x: hidden;
  background: #ffffff;
}

body {
  font-family: 'Montserrat', Helvetica, Arial, sans-serif;
}

.simulation-page {
  --s3d-color-primary: #1a1a1a;
  --s3d-color-secondary: #2c3539;
  --s3d-color-accent: #c5a059;
  --s3d-color-accent-hover: #a38449;
  --s3d-color-text-body: #333333;
  --s3d-color-bg-light: #f9f8f6;
  --s3d-color-bg-white: #ffffff;
  --s3d-color-border: #e5e5e5;
  --s3d-font-main: 'Montserrat', Helvetica, Arial, sans-serif;
  --s3d-spacing-section: 96px;
  --s3d-container-width: 1140px;
  --s3d-radius: 8px;

  width: 100%;
  max-width: 100%;
  overflow-x: hidden;
  font-family: var(--s3d-font-main);
  color: var(--s3d-color-text-body);
  line-height: 1.7;
  background-color: var(--s3d-color-bg-white);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

.simulation-page,
.simulation-page * {
  box-sizing: border-box;
}

.simulation-page main img {
  max-width: 100%;
  height: auto;
  display: block;
}

.simulation-page main a {
  text-decoration: none;
  color: inherit;
}

.simulation-page main h1,
.simulation-page main h2,
.simulation-page main h3,
.simulation-page main h4 {
  margin: 0 0 15px;
  font-family: var(--s3d-font-main);
  color: var(--s3d-color-secondary);
  font-weight: 500;
  line-height: 1.15;
  letter-spacing: -0.5px;
}

.simulation-page main h2 {
  font-size: 2.8rem;
  margin-bottom: 20px;
}

.simulation-page main h3 {
  font-size: 1.8rem;
}

.simulation-page main h4 {
  font-size: 1.2rem;
}

.simulation-page main p {
  margin: 0 0 1.5rem;
  font-size: 1.05rem;
  font-weight: 400;
  color: var(--s3d-color-text-body);
}

.simulation-page main strong {
  font-weight: 600;
  color: var(--s3d-color-primary);
}

.s3d-eyebrow {
  display: block;
  margin-bottom: 15px;
  font-size: 0.85rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 3px;
  color: var(--s3d-color-accent);
}

.s3d-container {
  width: 90%;
  max-width: var(--s3d-container-width);
  margin: 0 auto;
}

.s3d-section-header {
  width: 100%;
  max-width: 1100px;
  margin: 0 auto 48px;
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
}

.s3d-section-header .s3d-eyebrow,
.s3d-section-header h2,
.s3d-section-header p {
  width: 100%;
  margin-left: auto;
  margin-right: auto;
  text-align: center;
}

.s3d-section-header h2 {
  max-width: 1100px;
  margin-bottom: 15px;
}

.s3d-section-header p {
  width: 100%;
  max-width: 760px;
  margin: 0 auto !important;
  font-size: 1.12rem;
  color: var(--s3d-color-text-body);
  text-align: center !important;
}

.s3d-split-layout {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 74px;
  align-items: center;
}

.s3d-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 16px 36px;
  border: 2px solid transparent;
  border-radius: 40px;
  font-family: var(--s3d-font-main);
  font-size: 0.9rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 1.4px;
  text-decoration: none;
  cursor: pointer;
  transition: all 0.3s ease;
}

.s3d-btn-primary {
  background-color: var(--s3d-color-accent);
  color: #ffffff !important;
}

.s3d-btn-primary:hover,
.s3d-btn-primary:focus {
  background-color: var(--s3d-color-accent-hover);
  color: #ffffff !important;
  transform: translateY(-2px);
  box-shadow: 0 10px 20px rgba(197, 160, 89, 0.3);
}

.s3d-btn-outline {
  background-color: transparent;
  color: #ffffff !important;
  border-color: rgba(255, 255, 255, 0.92);
}

.s3d-btn-outline:hover,
.s3d-btn-outline:focus {
  background-color: #ffffff;
  color: var(--s3d-color-primary) !important;
}

.s3d-action-row {
  margin-top: 34px;
}

#khp-consultation-shell {
  scroll-margin-top: 120px;
}

/* HERO */
.s3d-hero {
  position: relative;
  padding: 220px 0 138px;
  text-align: center;
  color: #ffffff;
  overflow: hidden;
  background: #131820;
}

.s3d-hero-media {
  position: absolute;
  inset: 0;
  z-index: 0;
  overflow: hidden;
  pointer-events: none;
  opacity: 1;
  background: #131820;
}

.s3d-hero-video-el {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center center;
  display: block;
}

.s3d-hero-overlay {
  position: absolute;
  inset: 0;
  z-index: 1;
  background:
    linear-gradient(to right, rgba(18, 18, 18, 0.48), rgba(18, 18, 18, 0.28)),
    linear-gradient(to bottom, rgba(18, 18, 18, 0.18), rgba(18, 18, 18, 0.54));
}

.s3d-hero .s3d-container {
  position: relative;
  z-index: 2;
}

.s3d-hero-content {
  max-width: 1040px;
  margin: 0 auto;
}

.s3d-hero .s3d-eyebrow {
  color: var(--s3d-color-accent);
  letter-spacing: 4px;
}

.s3d-hero h1 {
  max-width: 1020px;
  margin: 0 auto 22px;
  color: #ffffff !important;
  font-size: 3.95rem;
  font-weight: 500;
  letter-spacing: -1px;
  line-height: 1.08;
}

.s3d-hero p.s3d-lead {
  max-width: 700px;
  margin: 0 auto 40px;
  font-size: 1.26rem;
  font-weight: 400;
  line-height: 1.55;
  color: #ffffff !important;
}

.s3d-hero-actions {
  display: flex;
  justify-content: center;
  gap: 20px;
  flex-wrap: wrap;
  margin-bottom: 38px;
}

.s3d-trust-signals {
  display: flex;
  justify-content: center;
  gap: 25px;
  flex-wrap: wrap;
  padding-top: 28px;
  border-top: 1px solid rgba(255, 255, 255, 0.3);
  font-size: 0.85rem;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 1.4px;
  color: #ffffff;
}

.s3d-trust-signals span {
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

/* WHAT IS PRESERVÉ */
.s3d-what-is {
  padding: 74px 0 40px;
  background-color: var(--s3d-color-bg-white);
}

.s3d-what-is-layout {
  align-items: center;
}

.s3d-image-column {
  position: relative;
  padding-left: 20px;
  padding-bottom: 20px;
}

.s3d-image-column::before {
  content: '';
  position: absolute;
  left: 0;
  bottom: 0;
  width: 80%;
  height: 88%;
  background: url('/assets/images/textures/shutterstock-2479012867.jpg') center/cover;
  border-radius: var(--s3d-radius);
  z-index: 0;
  box-shadow: 0 14px 34px rgba(0, 0, 0, 0.12);
}

.s3d-image-wrapper {
  position: relative;
  z-index: 1;
  width: 100%;
  aspect-ratio: 4 / 5;
  border-radius: var(--s3d-radius);
  background-size: cover;
  background-position: center;
  background-repeat: no-repeat;
  box-shadow: 0 20px 50px rgba(0, 0, 0, 0.12);
}

.s3d-text-content h2 {
  margin-bottom: 25px;
}

.s3d-benefits-list {
  list-style: none;
  margin: 35px 0 40px;
  padding: 0;
}

.s3d-benefits-list li {
  position: relative;
  display: flex;
  align-items: center;
  margin-bottom: 18px;
  padding-left: 35px;
  font-size: 1.08rem;
  font-weight: 500;
  color: var(--s3d-color-secondary);
}

.s3d-benefits-list li::before {
  content: '';
  position: absolute;
  left: 0;
  width: 18px;
  height: 2px;
  background-color: var(--s3d-color-accent);
}

/* TECHNIQUE */
.s3d-technique-section {
  padding: 64px 0 90px;
  background-color: var(--s3d-color-bg-light);
}

.s3d-technique-section .s3d-section-header {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
}

.s3d-technique-section .s3d-section-header h2 {
  width: 100%;
  text-align: center;
}

.s3d-technique-section .s3d-section-header p {
  display: block;
  width: 100%;
  max-width: 760px;
  margin: 0 auto !important;
  text-align: center !important;
}

.s3d-technique-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 34px;
}

.s3d-technique-card {
  background: #ffffff;
  padding: 36px;
  border-radius: var(--s3d-radius);
  box-shadow: 0 12px 28px rgba(0, 0, 0, 0.06);
  min-height: 100%;
}

.s3d-technique-step {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 54px;
  height: 54px;
  margin-bottom: 26px;
  border-radius: 50%;
  background: rgba(197, 160, 89, 0.12);
  color: var(--s3d-color-accent);
  font-weight: 600;
  font-size: 0.95rem;
}

.s3d-technique-card h3 {
  font-size: 1.15rem;
  line-height: 1.25;
  margin-bottom: 18px;
}

.s3d-technique-card p {
  margin-bottom: 0;
}

/* CTA STRIP */
.s3d-cta-strip {
  padding: 96px 0;
  color: #ffffff;
  background:
    linear-gradient(rgba(26, 26, 26, 0.34), rgba(26, 26, 26, 0.64)),
    url('/assets/images/textures/shutterstock-433037449.jpg') center / cover no-repeat;
}

.s3d-cta-strip .s3d-container {
  display: flex;
  justify-content: center;
}

.s3d-cta-strip-inner {
  width: 100%;
  max-width: 980px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
}

.s3d-cta-strip .s3d-eyebrow {
  text-align: center;
  margin-bottom: 14px;
}

.s3d-cta-strip h2 {
  max-width: 900px;
  margin: 0 auto 18px;
  color: #ffffff !important;
  font-size: 2.6rem;
  text-align: center;
}

.s3d-cta-strip p {
  display: block;
  width: 100%;
  max-width: 720px;
  margin: 0 auto 40px !important;
  font-size: 1.15rem;
  font-weight: 400;
  line-height: 1.7;
  color: #ffffff !important;
  text-align: center !important;
}

.s3d-cta-strip-actions {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 24px;
  flex-wrap: wrap;
  width: 100%;
  margin: 0 auto;
}

.s3d-cta-strip-actions .s3d-btn {
  white-space: nowrap;
}

.s3d-cta-strip-actions .s3d-btn-primary {
  min-width: 360px;
}

.s3d-cta-strip-actions .s3d-btn-outline {
  min-width: 320px;
}

/* SURGEON */
.s3d-surgeon {
  padding: 96px 0;
  background-color: var(--s3d-color-bg-white);
}

.s3d-surgeon-layout {
  display: grid;
  grid-template-columns: 5fr 6fr;
  gap: 90px;
  align-items: center;
}

.s3d-surgeon-img {
  position: relative;
  padding-left: 20px;
  padding-bottom: 20px;
}

.s3d-surgeon-img::before {
  content: '';
  position: absolute;
  left: 0;
  bottom: 0;
  width: 80%;
  height: 88%;
  background: url('/assets/images/textures/shutterstock-2479012867.jpg') center/cover;
  border-radius: var(--s3d-radius);
  z-index: 0;
  box-shadow: 0 14px 34px rgba(0, 0, 0, 0.12);
}

.s3d-surgeon-img .s3d-image-wrapper {
  position: relative;
  z-index: 1;
}

.s3d-image-surgeon {
  aspect-ratio: 3 / 4;
  background-image: url('/assets/images/doctors/dr-sameer-kapadia-double-board-certified-plastic-surgeon.png');
  background-position: top center;
}

.s3d-benefits-list-tight {
  margin-top: 25px;
}

/* FAQ */
.s3d-faq {
  padding: 92px 0;
  background-color: var(--s3d-color-bg-white);
}

.s3d-faq-container {
  max-width: 850px;
  margin: 0 auto;
}

.s3d-faq-item {
  border-bottom: 1px solid var(--s3d-color-border);
}

.s3d-faq-item:first-child {
  border-top: 1px solid var(--s3d-color-border);
}

.s3d-faq-item summary {
  position: relative;
  padding: 30px 50px 30px 0;
  cursor: pointer;
  list-style: none;
  font-size: 1.18rem;
  font-weight: 500;
  color: var(--s3d-color-secondary);
}

.s3d-faq-item summary::-webkit-details-marker {
  display: none;
}

.s3d-faq-item summary::after {
  content: '+';
  position: absolute;
  top: 50%;
  right: 10px;
  transform: translateY(-50%);
  font-size: 1.8rem;
  font-weight: 400;
  color: var(--s3d-color-accent);
}

.s3d-faq-item[open] summary::after {
  content: '−';
}

.s3d-faq-content {
  padding: 0 0 30px;
  font-size: 1.05rem;
  font-weight: 400;
  color: var(--s3d-color-text-body);
}

/* RELATED */
.s3d-related {
  padding: 84px 0;
  background: var(--s3d-color-bg-light);
}

.s3d-related-inner {
  max-width: 960px;
  margin: 0 auto;
  padding: 44px 48px;
  border-radius: 24px;
  background: rgba(255, 255, 255, 0.88);
  box-shadow: 0 14px 36px rgba(0, 0, 0, 0.05);
  text-align: center;
}

.s3d-related-inner h2 {
  max-width: 760px;
  margin-left: auto;
  margin-right: auto;
}

.s3d-related-inner p {
  max-width: 700px;
  margin: 0 auto 28px !important;
  text-align: center;
}

.s3d-related-links {
  display: flex;
  justify-content: center;
  gap: 14px;
  flex-wrap: wrap;
}

.s3d-related-links a {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 13px 18px;
  border: 1px solid rgba(44, 53, 57, 0.16);
  border-radius: 999px;
  font-size: 0.84rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 1.2px;
  color: var(--s3d-color-secondary);
  transition: all 0.25s ease;
}

.s3d-related-links a:hover,
.s3d-related-links a:focus {
  background: var(--s3d-color-secondary);
  color: #ffffff;
  border-color: var(--s3d-color-secondary);
}

/* LIGHTBOX */
@media (max-width: 1180px) {
  .s3d-what-is-layout {
    grid-template-columns: 1fr;
    gap: 44px;
    max-width: 760px;
    margin: 0 auto;
  }

  .s3d-what-is .s3d-image-column {
    order: 2;
    display: block;
    width: 100%;
    max-width: 460px;
    margin: 0 auto;
    justify-self: center;
  }

  .s3d-what-is .s3d-image-wrapper {
    display: block;
    width: 100%;
    aspect-ratio: 4 / 5;
  }
}

/* RESPONSIVE */
@media (max-width: 992px) {
  .s3d-hero h1 {
    font-size: 3.1rem;
  }

  .s3d-surgeon-layout,
  .s3d-technique-grid {
    grid-template-columns: 1fr;
    gap: 34px;
  }

  .s3d-image-column {
    max-width: 420px;
    margin: 0 auto;
  }

  .s3d-surgeon-img {
    order: 2;
    display: block;
    width: 100%;
    max-width: 460px;
    margin: 36px auto 0;
  }

  .s3d-surgeon-text {
    order: 1;
  }
}

@media (max-width: 768px) {
  .simulation-page {
    --s3d-spacing-section: 72px;
  }

  .s3d-hero {
    padding: 150px 0 92px;
    margin-top: -1px;
  }

  .s3d-hero h1 {
    font-size: 2.42rem;
  }

  .s3d-hero p.s3d-lead {
    font-size: 1.12rem;
    margin-bottom: 34px;
  }

  .simulation-page main h2 {
    font-size: 2.1rem;
  }

  .simulation-page main h3 {
    font-size: 1.45rem;
  }

  .s3d-section-header {
    margin-bottom: 34px;
  }

  .s3d-hero-actions,
  .s3d-cta-strip-actions,
  .s3d-action-row {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 14px;
    text-align: center;
  }

  .s3d-hero-actions .s3d-btn,
  .s3d-cta-strip-actions .s3d-btn,
  .s3d-action-row .s3d-btn {
    width: 100%;
    max-width: 340px;
    margin-left: auto;
    margin-right: auto;
    min-width: 0 !important;
  }

  .s3d-trust-signals {
    gap: 12px;
    font-size: 0.74rem;
    letter-spacing: 1px;
    padding-top: 18px;
  }

  .s3d-what-is {
    padding-top: 52px;
    padding-bottom: 36px;
  }

  .s3d-technique-section {
    padding-top: 44px;
    padding-bottom: 58px;
  }

  .s3d-surgeon,
  .s3d-faq,
  .s3d-related {
    padding-top: 58px;
    padding-bottom: 58px;
  }

  .s3d-surgeon-layout {
    gap: 26px;
  }

  .s3d-what-is-layout {
    grid-template-columns: 1fr;
    gap: 34px;
  }

  .s3d-what-is .s3d-image-column {
    width: 100%;
    max-width: 420px;
    margin: 28px auto 0;
    padding-left: 16px;
    padding-bottom: 16px;
  }

  .s3d-what-is .s3d-image-wrapper {
    width: 100%;
    min-height: 0;
    aspect-ratio: 4 / 5;
  }

  .s3d-image-column,
  .s3d-surgeon-img {
    padding-left: 16px;
    padding-bottom: 16px;
    margin-top: 0;
    margin-bottom: 0;
  }

  .s3d-image-column::before,
  .s3d-surgeon-img::before {
    width: 76%;
    height: 86%;
  }

  .s3d-image-wrapper {
    min-height: 360px;
  }

  .s3d-image-surgeon {
    min-height: 0;
  }

  .s3d-related-inner {
    padding: 34px 24px;
  }

  .s3d-technique-card {
    padding: 28px 22px;
  }

  .s3d-technique-step {
    width: 48px;
    height: 48px;
    margin-bottom: 18px;
  }

  .s3d-cta-strip {
    padding: 68px 20px;
    background-position: center center;
    background-size: cover;
    background-repeat: no-repeat;
  }

  .s3d-cta-strip h2 {
    font-size: 2.2rem;
  }

  .s3d-cta-strip p {
    max-width: 620px;
  }

  .khp-global-header:not(.is-scrolled):not(.is-open) {
    background: transparent !important;
    box-shadow: none !important;
    backdrop-filter: none !important;
    -webkit-backdrop-filter: none !important;
  }
}

@media (max-width: 560px) {
  .s3d-hero h1 {
    font-size: 2.02rem;
  }

  .simulation-page main h2 {
    font-size: 1.8rem;
  }

  .simulation-page main p {
    font-size: 1rem;
  }

  .s3d-btn {
    padding: 14px 24px;
    font-size: 0.82rem;
  }

  .s3d-image-wrapper {
    min-height: 320px;
  }

  .s3d-related-inner,
  .s3d-technique-card {
    padding: 28px 20px;
  }
}

/* "powered by Crisalix" lockup — footer-badge weight */
.s3d-powered {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  margin: -12px auto 34px;
  font-size: 0.7rem;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 1.6px;
  color: rgba(255, 255, 255, 0.78);
}

.simulation-page main .s3d-powered img {
  width: auto;
  height: 21px;
}

/* Why section */
.s3d-what-is {
  padding: 96px 0;
}

.s3d-device-panel {
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 56px 40px;
  border-radius: var(--s3d-radius);
  background: var(--s3d-color-bg-light);
}

.simulation-page main .s3d-device-panel img {
  width: 100%;
  max-width: 378px; /* source render is 756px wide — keeps it crisp at 2x */
}

/* How it works */
.s3d-technique-section {
  padding: 96px 0;
}

.s3d-steps-grid {
  grid-template-columns: repeat(4, 1fr);
  gap: 26px;
}

.s3d-steps-grid .s3d-technique-card {
  padding: 32px 28px;
}

.simulation-page main p.s3d-disclaimer {
  max-width: 760px;
  margin: 40px auto 0;
  font-size: 0.82rem;
  line-height: 1.6;
  color: #6b6b6b;
  text-align: center;
}

/* What it covers */
.s3d-covers {
  padding: 96px 0;
  background-color: var(--s3d-color-bg-white);
}

.simulation-page main .s3d-image-column img {
  position: relative;
  z-index: 1;
  width: 100%;
  aspect-ratio: 4 / 3;
  object-fit: cover;
  border-radius: var(--s3d-radius);
  box-shadow: 0 20px 50px rgba(0, 0, 0, 0.12);
}

.s3d-covers .s3d-benefits-list {
  margin: 28px 0 30px;
}

.simulation-page main a.s3d-text-link {
  border-bottom: 1px solid var(--s3d-color-accent);
  transition: color 0.25s ease;
}

.simulation-page main a.s3d-text-link:hover,
.simulation-page main a.s3d-text-link:focus-visible {
  color: var(--s3d-color-accent-hover);
}

/* Background alternation after the CTA strip: surgeon (white) → FAQ (light) → related (white) */
.s3d-faq {
  background-color: var(--s3d-color-bg-light);
}

.s3d-related {
  background: var(--s3d-color-bg-white);
}

.s3d-related-inner {
  background: var(--s3d-color-bg-light);
  box-shadow: none;
}

@media (max-width: 1180px) {
  .s3d-steps-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 992px) {
  .s3d-covers .s3d-split-layout {
    grid-template-columns: 1fr;
    gap: 44px;
  }
}

@media (max-width: 768px) {
  .s3d-what-is,
  .s3d-technique-section,
  .s3d-covers {
    padding: 64px 0;
  }

  .s3d-device-panel {
    padding: 36px 22px;
  }

  .s3d-powered {
    margin: -14px auto 26px;
  }
}

@media (max-width: 640px) {
  .s3d-steps-grid {
    grid-template-columns: 1fr;
  }
}