.book-container{
  max-width: 720px;
  margin: 0 auto;
  padding: 40px 16px 80px;
}

.book-container-wide{
  max-width: 960px;
}

.book-progress{
  display: flex;
  align-items: center;
  gap: 10px;
  justify-content: center;
  margin-bottom: 24px;
}

.book-progress .step{
  width: 34px;
  height: 34px;
  border-radius: 50%;
  display: grid;
  place-items: center;
  background: var(--surface-2);
  color: var(--text-muted);
  font-weight: 700;
  border: 1px solid var(--border);
}

.book-progress .step.active{
  background: var(--brand-grad);
  color: #1a1408;
}

.book-progress .step.done{
  background: rgba(235,212,145,.2);
  color: var(--gold-100);
}

.book-progress .line{
  width: 48px;
  height: 2px;
  background: rgba(235,212,145,.35);
}

.chip-group{
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.chip{
  border: 1px solid var(--border);
  border-radius: 999px;
  padding: 0.35rem 0.85rem;
  color: var(--text-muted);
  background: rgba(17,17,24,0.85);
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  font-size: 0.9rem;
  cursor: pointer;
  position: relative;
}

.chip input{
  position: absolute;
  opacity: 0;
  pointer-events: none;
}

.chip span{
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
}

.chip input:checked + span{
  color: #EBD491;
  border-radius: 999px;
  background: rgba(235,212,145,0.12);
  padding: 0.1rem 0.45rem;
}

.summary-card{
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 16px;
  display: grid;
  gap: 8px;
  background: rgba(17,17,24,0.85);
}

.checkout-cta{
  position: sticky;
  bottom: 12px;
  background: rgba(11,11,15,0.85);
  padding: 12px;
  border-radius: 16px;
  border: 1px solid var(--border);
}

.mix-preview{
  color: #9ae6b4;
  font-size: 0.9rem;
  font-weight: 600;
}

.plan-compare{
  display: grid;
  gap: 1rem;
}

@media (min-width: 768px){
  .plan-compare{
    grid-template-columns: 1fr 1fr;
  }
}

.plan-card{
  border: 1px solid var(--border);
  border-radius: 18px;
  padding: 1.1rem 1.2rem;
  background: rgba(17,17,24,0.85);
}

.plan-card.featured{
  border-color: rgba(219,198,121,.55);
  box-shadow: 0 12px 32px rgba(0,0,0,.28);
}

.plan-card.student{
  border-color: rgba(154, 230, 180, 0.35);
}

.plan-card.student.featured{
  border-color: rgba(154, 230, 180, 0.65);
}

.plan-badge{
  display: inline-flex;
  margin-top: 0.35rem;
  padding: 0.15rem 0.55rem;
  border-radius: 999px;
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.02em;
  color: #1a1408;
  background: #9ae6b4;
}

.plan-was{
  text-decoration: line-through;
  opacity: 0.7;
  margin-left: 0.25rem;
}

.plan-kicker{
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--text-muted);
}

.plan-price{
  font-size: 1.7rem;
  font-weight: 800;
  color: var(--gold-100);
  margin: 0.35rem 0 0.2rem;
}

.plan-price span{
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--text-muted);
}

.plan-savings{
  margin-top: 0.65rem;
  color: #9ae6b4;
  font-weight: 700;
  font-size: 0.9rem;
}

.plan-list{
  margin: 0.85rem 0 0;
  padding-left: 1.1rem;
  color: var(--text-muted);
  font-size: 0.9rem;
}