.course-hub {
  --course-navy: var(--ink, #1c2a3a);
  --course-navy-2: var(--ink-2, #24384e);
  --course-blue: var(--accent, #2aa3d6);
  --course-green: #2f9e67;
  --course-soft: #f4f8fb;
  --course-border: rgba(28, 42, 58, 0.12);
}

.course-hub .course-hero {
  position: relative;
  overflow: hidden;
}

.course-hub .course-hero::after {
  content: "";
  position: absolute;
  width: 360px;
  height: 360px;
  right: -150px;
  top: -160px;
  border-radius: 50%;
  background: rgba(42, 163, 214, 0.09);
  pointer-events: none;
}

.course-hub .course-hero__copy {
  position: relative;
  z-index: 1;
}

.course-hub .course-hero__kicker {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  margin: 0 0 1rem;
  padding: 0.45rem 0.75rem;
  border: 1px solid rgba(42, 163, 214, 0.24);
  border-radius: 999px;
  background: rgba(42, 163, 214, 0.08);
  color: var(--course-navy-2);
  font-weight: 700;
  font-size: 0.86rem;
  letter-spacing: 0.02em;
}

.course-hub .course-hero__kicker::before {
  content: "";
  width: 0.55rem;
  height: 0.55rem;
  border-radius: 50%;
  background: var(--course-green);
}

.course-hub .course-hero__proof {
  display: flex;
  flex-wrap: wrap;
  gap: 0.65rem;
  margin: 1.45rem 0 0;
  padding: 0;
  list-style: none;
}

.course-hub .course-hero__proof li {
  padding: 0.55rem 0.75rem;
  border-radius: 10px;
  background: rgba(255, 255, 255, 0.85);
  border: 1px solid var(--course-border);
  color: var(--course-navy-2);
  font-size: 0.9rem;
  font-weight: 600;
}

.course-hub .course-heading {
  max-width: 760px;
  margin-bottom: 2rem;
}

.course-hub .course-heading h2 {
  margin-bottom: 0.7rem;
}

.course-hub .course-heading p {
  margin: 0;
  color: var(--muted, #5b7287);
}

.course-hub .course-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1.25rem;
}

.course-hub .course-card {
  position: relative;
  display: flex;
  flex-direction: column;
  min-height: 100%;
  padding: 1.55rem;
  border: 1px solid var(--course-border);
  border-radius: 20px;
  background: #fff;
  box-shadow: 0 14px 38px rgba(28, 42, 58, 0.07);
}

.course-hub .course-card--featured {
  border-color: rgba(47, 158, 103, 0.34);
  box-shadow: 0 18px 44px rgba(47, 158, 103, 0.12);
}

.course-hub .course-card__topline {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.75rem;
  margin-bottom: 1rem;
}

.course-hub .course-level {
  color: var(--course-navy-2);
  font-size: 0.78rem;
  font-weight: 800;
  letter-spacing: 0.1em;
}

.course-hub .course-status {
  display: inline-flex;
  align-items: center;
  padding: 0.38rem 0.62rem;
  border-radius: 999px;
  font-size: 0.76rem;
  font-weight: 800;
  letter-spacing: 0.03em;
}

.course-hub .course-status--available {
  background: rgba(47, 158, 103, 0.11);
  color: #1d7549;
}

.course-hub .course-status--soon {
  background: rgba(42, 163, 214, 0.1);
  color: #176f96;
}

.course-hub .course-card h3 {
  margin: 0 0 0.7rem;
  color: var(--course-navy);
  font-size: clamp(1.28rem, 2vw, 1.55rem);
}

.course-hub .course-card__promise {
  margin: 0 0 1rem;
  color: var(--muted, #5b7287);
}

.course-hub .course-card__meta {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin: 0 0 1.1rem;
  padding: 0;
  list-style: none;
}

.course-hub .course-card__meta li {
  padding: 0.35rem 0.55rem;
  border-radius: 8px;
  background: var(--course-soft);
  color: var(--course-navy-2);
  font-size: 0.82rem;
  font-weight: 650;
}

.course-hub .course-card__list {
  margin: 0 0 1.35rem;
  padding-left: 1.15rem;
  color: var(--course-navy-2);
}

.course-hub .course-card__list li + li {
  margin-top: 0.45rem;
}

.course-hub .course-card__footer {
  margin-top: auto;
  padding-top: 0.45rem;
}

.course-hub .course-card__price {
  margin: 0 0 0.9rem;
  color: var(--course-navy);
  font-weight: 800;
}

.course-hub .course-card__price strong {
  font-size: 1.35rem;
}

.course-hub .route-flow {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1rem;
  counter-reset: route;
}

.course-hub .route-step {
  position: relative;
  padding: 1.4rem 1.3rem 1.35rem 4.1rem;
  border-radius: 18px;
  background: #fff;
  border: 1px solid var(--course-border);
}

.course-hub .route-step::before {
  counter-increment: route;
  content: "0" counter(route);
  position: absolute;
  left: 1.25rem;
  top: 1.25rem;
  display: grid;
  place-items: center;
  width: 2.15rem;
  height: 2.15rem;
  border-radius: 10px;
  background: var(--course-navy);
  color: #fff;
  font-size: 0.75rem;
  font-weight: 800;
}

.course-hub .route-step:not(:last-child)::after {
  content: "→";
  position: absolute;
  top: 50%;
  right: -0.72rem;
  transform: translateY(-50%);
  z-index: 2;
  color: var(--course-green);
  font-size: 1.25rem;
  font-weight: 900;
}

.course-hub .route-step__verb {
  margin: 0 0 0.25rem;
  color: var(--course-green);
  font-weight: 900;
  letter-spacing: 0.07em;
  font-size: 0.78rem;
}

.course-hub .route-step h3 {
  margin: 0 0 0.45rem;
  font-size: 1.1rem;
}

.course-hub .route-step p {
  margin: 0;
  color: var(--muted, #5b7287);
  font-size: 0.92rem;
}

.course-hub .learning-principles {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 1rem;
}

.course-hub .learning-principle {
  padding: 1.3rem;
  border-top: 3px solid var(--course-blue);
  border-radius: 0 0 14px 14px;
  background: #fff;
  box-shadow: 0 10px 28px rgba(28, 42, 58, 0.06);
}

.course-hub .learning-principle strong {
  display: block;
  margin-bottom: 0.4rem;
  color: var(--course-navy);
}

.course-hub .learning-principle p {
  margin: 0;
  color: var(--muted, #5b7287);
  font-size: 0.9rem;
}

.course-hub .choice-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1rem;
}

.course-hub .choice-card {
  padding: 1.4rem;
  border-radius: 18px;
  border: 1px solid var(--course-border);
  background: #fff;
}

.course-hub .choice-card h3 {
  margin: 0 0 0.5rem;
}

.course-hub .choice-card p {
  margin: 0 0 1rem;
  color: var(--muted, #5b7287);
}

.course-hub .course-final-cta {
  border-radius: 24px;
  padding: clamp(1.6rem, 4vw, 2.8rem);
  background: linear-gradient(135deg, var(--course-navy), var(--course-navy-2));
  color: #fff;
}

.course-hub .course-final-cta .eyebrow,
.course-hub .course-final-cta h2,
.course-hub .course-final-cta p {
  color: #fff;
}

.course-hub .course-final-cta p {
  max-width: 720px;
}

.course-hub .course-final-cta .btn--ghost {
  border-color: rgba(255, 255, 255, 0.45);
  color: #fff;
}

.course-hub .course-note {
  margin-top: 1rem;
  color: var(--muted, #5b7287);
  font-size: 0.86rem;
}

.course-detail .course-detail__hero-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.35fr) minmax(280px, 0.65fr);
  gap: clamp(1.5rem, 4vw, 3rem);
  align-items: start;
}

.course-detail .course-detail__offer {
  position: sticky;
  top: 96px;
  padding: 1.45rem;
  border-radius: 20px;
  border: 1px solid rgba(47, 158, 103, 0.28);
  background: #fff;
  box-shadow: 0 18px 42px rgba(28, 42, 58, 0.1);
}

.course-detail .course-detail__offer-label {
  display: inline-flex;
  padding: 0.35rem 0.6rem;
  border-radius: 999px;
  background: rgba(47, 158, 103, 0.11);
  color: #1d7549;
  font-size: 0.78rem;
  font-weight: 800;
}

.course-detail .course-detail__price {
  margin: 0.85rem 0 0.25rem;
  color: var(--course-navy);
  font-size: clamp(2rem, 5vw, 2.8rem);
  font-weight: 900;
  line-height: 1;
}

.course-detail .course-detail__installments {
  margin: 0 0 1rem;
  color: var(--muted, #5b7287);
  font-size: 0.9rem;
}

.course-detail .course-detail__offer ul {
  margin: 1rem 0 1.2rem;
  padding-left: 1.15rem;
  color: var(--course-navy-2);
}

.course-detail .course-detail__offer li + li {
  margin-top: 0.42rem;
}

.course-detail .course-detail__offer .btn {
  width: 100%;
  justify-content: center;
  text-align: center;
}

.course-detail .course-detail__microcopy {
  margin: 0.85rem 0 0;
  color: var(--muted, #5b7287);
  font-size: 0.8rem;
}

.course-detail .problem-grid,
.course-detail .outcome-grid,
.course-detail .materials-grid,
.course-detail .fit-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1rem;
}

.course-detail .problem-card,
.course-detail .outcome-card,
.course-detail .material-card,
.course-detail .fit-card {
  padding: 1.35rem;
  border: 1px solid var(--course-border);
  border-radius: 18px;
  background: #fff;
}

.course-detail .problem-card strong,
.course-detail .outcome-card strong,
.course-detail .material-card strong,
.course-detail .fit-card strong {
  display: block;
  margin-bottom: 0.45rem;
  color: var(--course-navy);
}

.course-detail .problem-card p,
.course-detail .outcome-card p,
.course-detail .material-card p,
.course-detail .fit-card p {
  margin: 0;
  color: var(--muted, #5b7287);
}

.course-detail .system-map {
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  gap: 0.75rem;
}

.course-detail .system-map__item {
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
  min-height: 112px;
  padding: 1rem;
  border-radius: 16px;
  border: 1px solid var(--course-border);
  background: #fff;
}

.course-detail .system-map__number {
  color: var(--course-green);
  font-size: 0.75rem;
  font-weight: 900;
  letter-spacing: 0.08em;
}

.course-detail .system-map__item strong {
  color: var(--course-navy);
}

.course-detail .system-map__item span:last-child {
  color: var(--muted, #5b7287);
  font-size: 0.85rem;
}

.course-detail .curriculum-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1rem;
}

.course-detail .curriculum-item {
  overflow: hidden;
  border: 1px solid var(--course-border);
  border-radius: 16px;
  background: #fff;
}

.course-detail .curriculum-item summary {
  display: flex;
  align-items: center;
  gap: 0.85rem;
  padding: 1rem 1.1rem;
  cursor: pointer;
  color: var(--course-navy);
  font-weight: 800;
  list-style: none;
}

.course-detail .curriculum-item summary::-webkit-details-marker {
  display: none;
}

.course-detail .curriculum-item summary::after {
  content: "+";
  margin-left: auto;
  color: var(--course-green);
  font-size: 1.25rem;
}

.course-detail .curriculum-item[open] summary::after {
  content: "−";
}

.course-detail .curriculum-item__number {
  display: grid;
  place-items: center;
  width: 2rem;
  height: 2rem;
  flex: 0 0 auto;
  border-radius: 9px;
  background: var(--course-soft);
  color: var(--course-navy-2);
  font-size: 0.78rem;
  font-weight: 900;
}

.course-detail .curriculum-item__body {
  padding: 0 1.1rem 1.1rem 4rem;
  color: var(--muted, #5b7287);
}

.course-detail .curriculum-item__body p {
  margin: 0 0 0.6rem;
}

.course-detail .curriculum-item__body strong {
  color: var(--course-navy-2);
}

.course-detail .case-card {
  display: grid;
  grid-template-columns: minmax(0, 0.7fr) minmax(0, 1.3fr);
  gap: 1.5rem;
  padding: clamp(1.4rem, 4vw, 2.2rem);
  border-radius: 22px;
  background: linear-gradient(135deg, rgba(28, 42, 58, 0.98), rgba(36, 56, 78, 0.96));
  color: #fff;
}

.course-detail .case-card h2,
.course-detail .case-card h3,
.course-detail .case-card p,
.course-detail .case-card li {
  color: #fff;
}

.course-detail .case-card__metrics {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0.75rem;
}

.course-detail .case-metric {
  padding: 0.9rem;
  border-radius: 14px;
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid rgba(255, 255, 255, 0.16);
}

.course-detail .case-metric strong {
  display: block;
  margin-bottom: 0.25rem;
  color: #fff;
  font-size: 1.05rem;
}

.course-detail .case-metric span {
  color: rgba(255, 255, 255, 0.78);
  font-size: 0.85rem;
}

.course-detail .method-strip {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  overflow: hidden;
  border: 1px solid var(--course-border);
  border-radius: 18px;
  background: #fff;
}

.course-detail .method-strip__item {
  position: relative;
  padding: 1.25rem;
}

.course-detail .method-strip__item + .method-strip__item {
  border-left: 1px solid var(--course-border);
}

.course-detail .method-strip__item strong {
  display: block;
  margin-bottom: 0.35rem;
  color: var(--course-navy);
}

.course-detail .method-strip__item span {
  color: var(--muted, #5b7287);
  font-size: 0.88rem;
}

.course-detail .instructor-card {
  display: grid;
  grid-template-columns: 130px minmax(0, 1fr);
  gap: 1.3rem;
  align-items: center;
  padding: 1.4rem;
  border: 1px solid var(--course-border);
  border-radius: 20px;
  background: #fff;
}

.course-detail .instructor-card img {
  width: 130px;
  height: 130px;
  object-fit: cover;
  border-radius: 18px;
}

.course-detail .instructor-card h3 {
  margin: 0 0 0.35rem;
}

.course-detail .instructor-card p {
  margin: 0;
  color: var(--muted, #5b7287);
}

.course-detail .price-panel {
  display: grid;
  grid-template-columns: minmax(0, 1.2fr) minmax(260px, 0.8fr);
  gap: 1.5rem;
  align-items: center;
  padding: clamp(1.5rem, 4vw, 2.4rem);
  border-radius: 24px;
  border: 1px solid rgba(47, 158, 103, 0.28);
  background: linear-gradient(135deg, rgba(47, 158, 103, 0.07), rgba(42, 163, 214, 0.06));
}

.course-detail .price-panel__amount {
  color: var(--course-navy);
  font-size: clamp(2.1rem, 6vw, 3.2rem);
  font-weight: 900;
}

.course-detail .price-panel__aside {
  padding: 1.15rem;
  border-radius: 16px;
  background: #fff;
  border: 1px solid var(--course-border);
}

.course-detail .price-panel__aside p {
  margin: 0;
  color: var(--muted, #5b7287);
}

.course-detail .support-boundaries {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1rem;
}

.course-detail .support-boundaries > div {
  padding: 1.25rem;
  border-radius: 18px;
  background: #fff;
  border: 1px solid var(--course-border);
}

.course-detail .support-boundaries h3 {
  margin-top: 0;
}

.course-detail .support-boundaries ul {
  margin-bottom: 0;
  padding-left: 1.1rem;
}

.course-detail .next-step-card {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 1.35rem;
  border: 1px solid var(--course-border);
  border-radius: 18px;
  background: #fff;
}

.course-detail .next-step-card p {
  margin: 0;
  color: var(--muted, #5b7287);
}

@media (max-width: 980px) {
  .course-hub .course-grid,
  .course-hub .route-flow,
  .course-hub .choice-grid,
  .course-detail .course-detail__hero-grid,
  .course-detail .case-card,
  .course-detail .price-panel {
    grid-template-columns: 1fr;
  }

  .course-hub .learning-principles,
  .course-detail .problem-grid,
  .course-detail .outcome-grid,
  .course-detail .materials-grid,
  .course-detail .fit-grid,
  .course-detail .curriculum-grid,
  .course-detail .support-boundaries {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .course-detail .system-map {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .course-detail .course-detail__offer {
    position: static;
  }

  .course-hub .route-step:not(:last-child)::after {
    content: "↓";
    top: auto;
    right: 50%;
    bottom: -1.1rem;
    transform: translateX(50%);
  }
}

@media (max-width: 620px) {
  .course-hub .learning-principles,
  .course-detail .problem-grid,
  .course-detail .outcome-grid,
  .course-detail .materials-grid,
  .course-detail .fit-grid,
  .course-detail .curriculum-grid,
  .course-detail .support-boundaries,
  .course-detail .case-card__metrics,
  .course-detail .method-strip,
  .course-detail .system-map {
    grid-template-columns: 1fr;
  }

  .course-detail .method-strip__item + .method-strip__item {
    border-left: 0;
    border-top: 1px solid var(--course-border);
  }

  .course-detail .curriculum-item__body {
    padding-left: 1.1rem;
  }

  .course-detail .instructor-card {
    grid-template-columns: 1fr;
  }

  .course-detail .instructor-card img {
    width: 110px;
    height: 110px;
  }

  .course-hub .course-card,
  .course-hub .route-step,
  .course-hub .choice-card {
    padding-left: 1.1rem;
    padding-right: 1.1rem;
  }

  .course-hub .route-step {
    padding-top: 4.1rem;
  }

  .course-hub .route-step::before {
    left: 1.1rem;
  }
}