.course-hero {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(280px, 420px);
  gap: clamp(28px, 5vw, 72px);
  align-items: center;
  padding: clamp(48px, 8vw, 96px) clamp(20px, 5vw, 72px);
  background: radial-gradient(circle at 84% 20%, rgba(40, 214, 163, .2), transparent 30%), linear-gradient(135deg, #f8fbff, #eef6ff);
}
.breadcrumb { margin: 0 0 18px; color: var(--muted); font-weight: 700; }
.breadcrumb a { color: var(--blue-700); }
.course-hero h1 { margin: 0; color: var(--navy); font-size: clamp(2.45rem, 5.7vw, 5.6rem); line-height: .98; letter-spacing: 0; }
.course-hero-copy > p:last-of-type, .course-copy p, .cta-band p { color: var(--muted); font-size: 1.08rem; line-height: 1.72; }
.course-actions { display: flex; flex-wrap: wrap; gap: 14px; margin-top: 28px; }
.course-info-card { padding: 24px; border: 1px solid var(--line); border-radius: 8px; background: var(--white); box-shadow: var(--shadow); }
.course-info-card img { display: block; width: 100%; height: auto; margin-bottom: 18px; }
.course-info-card dl { display: grid; gap: 12px; margin: 0; }
.course-info-card div { padding: 14px; border-radius: 8px; background: var(--soft); }
.course-info-card dt { color: var(--muted); font-size: .78rem; font-weight: 800; text-transform: uppercase; }
.course-info-card dd { margin: 6px 0 0; color: var(--navy); font-weight: 800; line-height: 1.35; }
.course-section { padding: clamp(50px, 7vw, 86px) clamp(20px, 5vw, 72px); }
.section-heading.compact { max-width: 820px; margin-bottom: 26px; }
.section-heading.compact h2 { font-size: clamp(1.9rem, 3.6vw, 3.15rem); }
.course-copy { max-width: 920px; }
.soft-band { background: var(--soft); }
.strength-list { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 14px; padding: 0; margin: 0; list-style: none; }
.strength-list li { min-height: 70px; padding: 20px 20px 20px 52px; border: 1px solid var(--line); border-radius: 8px; color: var(--navy); font-weight: 800; background: var(--white); position: relative; }
.strength-list li::before { content: ""; position: absolute; left: 22px; top: 26px; width: 14px; height: 14px; border-radius: 50%; background: var(--mint); }
.model-grid, .detail-grid, .related-grid, .curriculum { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 16px; }
.detail-grid { grid-template-columns: repeat(4, minmax(0, 1fr)); }
.model-grid article, .detail-grid article, .related-grid article, .curriculum div { padding: 22px; border: 1px solid var(--line); border-radius: 8px; background: var(--white); box-shadow: 0 10px 26px rgba(9, 35, 63, .06); }
.model-grid h3, .detail-grid h3, .related-grid h3, .curriculum h3 { margin: 0 0 10px; color: var(--navy); }
.model-grid p, .detail-grid p { margin: 0; color: var(--muted); line-height: 1.62; }
.cta-band { display: flex; align-items: center; justify-content: space-between; gap: 24px; color: var(--white); background: linear-gradient(135deg, var(--navy), var(--blue)); }
.cta-band .eyebrow, .cta-band h2 { color: var(--white); }
.cta-band p { color: #e7f1ff; }
.cta-band .button-secondary { border-color: rgba(255,255,255,.35); color: var(--white); background: rgba(255,255,255,.12); }
.related-grid span { color: var(--blue-700); font-size: .78rem; font-weight: 800; text-transform: uppercase; }
.related-grid a { color: var(--blue-700); font-weight: 800; }
.curriculum { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.curriculum ul { margin: 0; padding-left: 20px; color: var(--muted); line-height: 1.8; }
.note { margin: 18px 0 0; color: var(--muted); }
@media (max-width: 980px) {
  .course-hero, .cta-band { grid-template-columns: 1fr; }
  .model-grid, .detail-grid, .related-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}
@media (max-width: 640px) {
  .course-actions, .button { width: 100%; }
  .strength-list, .model-grid, .detail-grid, .related-grid, .curriculum { grid-template-columns: 1fr; }
  .course-info-card { padding: 18px; }
}