.why-concrete {
  padding: 60px 0;
  background: var(--pale);
  border-top: 1px solid #233143;
  border-bottom: 1px solid #233143;
}
.concrete-panel { max-width: 920px; margin-inline: auto; }
.concrete-title {
  margin: 0 0 14px;
  font-family: Manrope, sans-serif;
  font-size: clamp(1.6rem, 3vw, 2.3rem);
  font-weight: 500;
  line-height: 1.15;
  letter-spacing: -.025em;
  color: #35b9ff;
}
.concrete-tagline {
  max-width: 720px;
  margin: 0 0 18px;
  color: #f0f4fa;
  font-family: Manrope, sans-serif;
  font-size: clamp(1.1rem, 2.2vw, 1.45rem);
  font-weight: 500;
  line-height: 1.4;
}
.concrete-copy { max-width: 780px; color: #bdcadb; font-size: .96rem; line-height: 1.65; }
.concrete-copy p { margin: 0 0 15px; }
.concrete-more summary {
  width: fit-content;
  padding: 5px 0;
  color: #65c7ff;
  cursor: pointer;
  font-size: .9rem;
  font-weight: 600;
}
.concrete-more summary:focus-visible { outline: 2px solid #65c7ff; outline-offset: 5px; }
.concrete-more summary .concrete-read-less { display: none; }
.concrete-more[open] summary .concrete-read-more { display: none; }
.concrete-more[open] summary .concrete-read-less { display: inline; }
.concrete-more .concrete-continuation { padding-top: 15px; }
.concrete-continuation p:last-child { margin-bottom: 0; }
@media (max-width: 540px) {
  .why-concrete { padding: 38px 0; }
  .concrete-copy { font-size: .92rem; line-height: 1.6; }
}