.site-header nav {
  gap: 1.55vw;
  font-size: .76rem;
  letter-spacing: .05em;
}

.walkthrough {
  background: #e8e3da;
}

.walkthrough-head {
  display: grid;
  grid-template-columns: 1.25fr .75fr;
  gap: 8vw;
  align-items: end;
  margin-bottom: 55px;
}

.walkthrough-head h2,
.assurances h2 {
  font: 300 clamp(3.1rem, 5.6vw, 6rem)/.95 Manrope, sans-serif;
  letter-spacing: -.055em;
  margin: .22em 0;
}

.walkthrough-head h2 em,
.assurances h2 em {
  font-family: Georgia, serif;
  font-weight: 400;
  color: #8d7650;
}

.walkthrough-head > div:last-child p {
  max-width: 520px;
  font-size: 1.05rem;
}

.walkthrough-frame {
  height: min(74vh, 780px);
  min-height: 520px;
  overflow: hidden;
  background: #101815;
  border: 1px solid #c7bda9;
  box-shadow: 0 28px 70px #27322e24;
}

.walkthrough-frame iframe {
  display: block;
  width: 100%;
  height: 100%;
  border: 0;
}

.assurances {
  display: grid;
  grid-template-columns: .9fr 1.1fr;
  gap: 9vw;
  background: #f5f3ed;
}

.assurance-grid {
  border-top: 1px solid var(--line);
}

.assurance-grid article {
  display: grid;
  grid-template-columns: 76px 1fr;
  gap: 28px;
  padding: 34px 0;
  border-bottom: 1px solid var(--line);
}

.assurance-grid article > span {
  display: grid;
  place-items: center;
  width: 62px;
  height: 62px;
  border: 1px solid #9d8254;
  border-radius: 50%;
  color: #7e673e;
  font: 400 1.05rem Manrope, sans-serif;
}

.assurance-grid h3 {
  margin: 0 0 12px;
  font: 400 1.35rem Manrope, sans-serif;
}

.assurance-grid p {
  margin: 0 0 18px;
  color: #4e5653;
}

.email-link,
.footer-email {
  border-bottom: 1px solid currentColor;
  padding-bottom: 2px;
}

@media (max-width: 900px) {
  .walkthrough-head,
  .assurances {
    grid-template-columns: 1fr;
  }

  .walkthrough-frame {
    height: 64vh;
    min-height: 460px;
  }
}

@media (max-width: 600px) {
  .walkthrough-frame {
    height: 68vh;
    min-height: 430px;
  }

  .assurance-grid article {
    grid-template-columns: 62px 1fr;
    gap: 18px;
  }
}