.lesson-identity {
  display: flex;
  align-items: center;
  gap: 16px;
  min-width: 0;
}

.lesson-back {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 34px;
  padding: 0 11px;
  border: 1px solid #ffffff44;
  color: #fff;
  font: 10px var(--mono);
  white-space: nowrap;
}

.lesson-back:hover,
.lesson-back:focus-visible {
  background: var(--acid);
  border-color: var(--acid);
  color: var(--ink);
}

.lesson-identity .brand { min-width: 0; }
.lesson-identity .brand-mark { flex: 0 0 auto; }

.product-passport {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1px;
  margin: 28px 0;
  border: 1px solid var(--line);
  background: var(--line);
}

.product-passport span {
  display: grid;
  gap: 6px;
  padding: 18px;
  background: var(--soft);
}

.product-passport small { font: 9px var(--mono); color: var(--teal); }
.product-passport b { font-size: 15px; }

.payoff-strip {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 8px;
  margin: 28px 0;
}

.payoff-strip span {
  min-height: 92px;
  padding: 16px;
  border-bottom: 4px solid var(--teal);
  background: var(--soft);
  display: flex;
  align-items: flex-end;
  font-weight: 700;
}

.risk-stack {
  display: flex;
  gap: 6px;
  align-items: flex-end;
  height: 130px;
  margin: 26px 0;
}

.risk-stack span {
  flex: 1;
  height: var(--risk);
  padding: 10px;
  background: var(--teal);
  color: #fff;
  display: flex;
  align-items: flex-end;
  font: 9px var(--mono);
}

@media (max-width: 850px) {
  .lesson-identity { gap: 7px; }
  .lesson-back { padding: 0 8px; }
  .lesson-topbar .lesson-identity .brand { display: none; }
  .product-passport { grid-template-columns: 1fr 1fr; }
  .payoff-strip { grid-template-columns: 1fr 1fr; }
}

.lesson-progress-card + .lesson-progress-card { margin-top: 24px; }
.lesson-progress-card small { display: block; margin-top: 12px; color: #aebbb6; font: 11px var(--mono); }