/* Engineering & security extends the site's existing parchment design. */
.rt-engineering-intro { padding-top: clamp(55px, 6vw, 90px); }
.rt-engineering-intro-grid {
  display: grid;
  grid-template-columns: minmax(250px, .85fr) minmax(0, 1.15fr);
  gap: clamp(28px, 6vw, 90px);
  align-items: start;
}
.rt-engineering-intro h2,
.rt-engineering-heading h2,
.rt-engineering-contact h2 {
  max-width: 640px;
  margin: 12px 0 0;
  color: #2b2a23;
  font-family: Georgia, "Times New Roman", serif;
  font-weight: 500;
  line-height: 1.12;
  font-size: clamp(2.3rem, 4vw, 3.8rem);
}
.rt-engineering-operator p {
  margin: 0 0 18px;
  max-width: 700px;
  color: #4e483e;
  font-size: clamp(1rem, 1.4vw, 1.12rem);
  line-height: 1.8;
}
.rt-engineering-operator a {
  display: inline-flex;
  color: #405a33;
  font-size: 15px;
  font-weight: 700;
  text-decoration: underline;
  text-underline-offset: 4px;
}
.rt-engineering-practices {
  padding-top: clamp(45px, 6vw, 70px);
  background: rgba(226, 214, 195, .28);
  border-top: 1px solid rgba(73, 65, 49, .12);
}
.rt-engineering-heading { margin-bottom: 30px; }
.rt-engineering-heading h2 { margin-top: 12px; }
.rt-engineering-heading > p:last-child {
  max-width: 720px;
  margin: 18px 0 0;
  color: #5d574c;
  font-size: 17px;
  line-height: 1.7;
}
.rt-engineering-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 20px;
}
.rt-engineering-card {
  min-height: 255px;
  padding: clamp(24px, 3vw, 38px);
  border: 1px solid rgba(64, 75, 49, .19);
  border-radius: 12px;
  background: rgba(251, 246, 236, .68);
  box-shadow: 0 12px 32px rgba(49, 42, 28, .04);
}
.rt-engineering-card-index {
  display: block;
  color: #638047;
  font-size: 13px;
  font-weight: 800;
  letter-spacing: .13em;
}
.rt-engineering-card h3 {
  margin: 23px 0 12px;
  color: #2c2c23;
  font-family: Georgia, "Times New Roman", serif;
  font-size: clamp(1.5rem, 2.3vw, 2rem);
  font-weight: 500;
}
.rt-engineering-card p {
  max-width: 570px;
  margin: 0;
  color: #514b41;
  font-size: 16px;
  line-height: 1.72;
}
.rt-engineering-boundary {
  display: grid;
  grid-template-columns: minmax(230px, .5fr) minmax(0, 1fr);
  gap: 24px;
  margin-top: 25px;
  padding: 28px 34px;
  border-left: 4px solid #7b8d5b;
  background: rgba(238, 232, 217, .72);
}
.rt-engineering-boundary h3 {
  margin: 0;
  font-family: Georgia, "Times New Roman", serif;
  color: #302d25;
  font-size: 1.55rem;
  font-weight: 500;
}
.rt-engineering-boundary p { margin: 0; color: #514b41; line-height: 1.7; }
.rt-engineering-contact { background: rgba(237, 229, 215, .4); }
.rt-engineering-contact-inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 28px;
}
.rt-engineering-contact h2 { font-size: clamp(2rem, 3.4vw, 3rem); }
.rt-engineering-contact p:last-child { max-width: 670px; color: #554d42; font-size: 16px; line-height: 1.75; }
.rt-engineering-contact-link {
  display: inline-flex;
  flex: 0 0 auto;
  align-items: center;
  justify-content: center;
  min-height: 52px;
  padding: 12px 22px;
  border-radius: 7px;
  color: #f5efe4 !important;
  background: #354d36;
  font-weight: 700;
}
.rt-engineering-contact-link:hover { background: #243826; }
@media (max-width: 760px) {
  .rt-engineering-intro-grid, .rt-engineering-grid, .rt-engineering-boundary {
    grid-template-columns: 1fr;
  }
  .rt-engineering-card { min-height: 0; }
  .rt-engineering-boundary { padding: 22px; }
  .rt-engineering-contact-inner { flex-direction: column; align-items: flex-start; }
}