/* SE introduction only: a calm navy statement and eight readable domain cards. */
.article-body .detail-section.engineering-intro {
  padding: 0;
  overflow: hidden;
  border: 1px solid #d8e5f0;
  border-radius: 16px;
  background: #f3f7fc;
  box-shadow: 0 12px 32px #12304b08;
}
.engineering-intro .engineering-intro-header {
  display: grid;
  grid-template-columns: minmax(0,.9fr) minmax(0,1.6fr);
  align-items: center;
  gap: 48px;
  padding: 44px 40px;
  background: linear-gradient(120deg,#102f4b,#173d5d);
  border-bottom: 3px solid #58c5e5;
}
.engineering-intro .engineering-intro-header > .content-block { margin: 0; min-width: 0; }
.article-body .engineering-intro .engineering-intro-heading h2 {
  margin: 0;
  color: #fff;
  font-size: clamp(1.65rem,2.4vw,2.15rem);
  font-weight: 700;
  line-height: 1.55;
  letter-spacing: -.025em;
  overflow-wrap: anywhere;
}
.engineering-intro .engineering-intro-heading h2::after {
  content: '';
  display: block;
  width: 48px;
  height: 3px;
  margin-top: 24px;
  background: #71d1ed;
}
.article-body .engineering-intro .engineering-intro-copy p {
  margin: 0;
  color: #e0edf7;
  font-size: 1rem;
  line-height: 2;
  overflow-wrap: anywhere;
}
.article-body .engineering-intro .engineering-domain-grid {
  display: grid;
  grid-template-columns: repeat(4,minmax(0,1fr));
  gap: 16px;
  margin: 0;
  padding: 32px;
  list-style: none;
}
.article-body .engineering-intro .engineering-domain-card {
  display: flex;
  flex-direction: column;
  gap: 20px;
  min-width: 0;
  margin: 0;
  padding: 24px;
  border: 1px solid #dce7f2;
  border-radius: 10px;
  background: #fff;
  box-shadow: 0 3px 10px #12304b04;
}
.engineering-intro .engineering-domain-number {
  display: flex;
  align-items: center;
  gap: 14px;
  color: #236ab2;
  font-family: Manrope,sans-serif;
  font-size: .875rem;
  font-weight: 700;
  line-height: 1.4;
  letter-spacing: .08em;
}
.engineering-intro .engineering-domain-number::after {
  content: '';
  height: 1px;
  flex: 1;
  background: #d9e7f4;
}
.engineering-intro .engineering-domain-label {
  color: #153754;
  font-size: 1.0625rem;
  font-weight: 600;
  line-height: 1.8;
  overflow-wrap: anywhere;
}
@media (max-width: 1100px) {
  .engineering-intro .engineering-intro-header { grid-template-columns: minmax(0,1fr); gap: 24px; padding: 36px; }
  .engineering-intro .engineering-intro-heading h2::after { margin-top: 18px; }
  .article-body .engineering-intro .engineering-domain-grid { grid-template-columns: repeat(2,minmax(0,1fr)); padding: 28px; }
}
@media (max-width: 600px) {
  .article-body .detail-section.engineering-intro { border-radius: 12px; }
  .engineering-intro .engineering-intro-header { gap: 20px; padding: 28px 24px; }
  .article-body .engineering-intro .engineering-intro-heading h2 { font-size: 1.6rem; }
  .article-body .engineering-intro .engineering-domain-grid { grid-template-columns: minmax(0,1fr); padding: 20px; gap: 12px; }
  .article-body .engineering-intro .engineering-domain-card { flex-direction: row; align-items: center; gap: 18px; padding: 20px; }
  .engineering-intro .engineering-domain-number { flex: 0 0 auto; min-width: 1.5em; }
  .engineering-intro .engineering-domain-number::after { display: none; }
  .engineering-intro .engineering-domain-label { min-width: 0; font-size: 1rem; }
}
@media print {
  .article-body .detail-section.engineering-intro { overflow: visible; box-shadow: none; }
  .engineering-intro .engineering-intro-header { background: #fff; border-bottom-color: #537994; }
  .article-body .engineering-intro .engineering-intro-heading h2,
  .article-body .engineering-intro .engineering-intro-copy p { color: #153754; }
  .article-body .engineering-intro .engineering-domain-grid { grid-template-columns: repeat(2,minmax(0,1fr)); }
  .article-body .engineering-intro .engineering-domain-card { break-inside: avoid; box-shadow: none; }
}