.course-hint-overlay {
  position: absolute;
  left: 0;
  right: 0;
  top: 120px;
  display: flex;
  justify-content: center;
  pointer-events: none;
  z-index: 20;
}
.course-hint-overlay.hidden { display: none; }
.course-hint-card {
  width: calc(100% - 32px);
  max-width: 420px;
  background: #fff;
  border: 1px solid #ececec;
  border-radius: 18px;
  box-shadow: 0 10px 30px rgba(0,0,0,.08);
  padding: 18px 16px 16px;
  pointer-events: auto;
}
.course-hint-title {
  font-size: 20px;
  font-weight: 700;
  line-height: 1.4;
  color: #111;
  margin-bottom: 10px;
  text-align: center;
}
.course-hint-desc {
  font-size: 15px;
  line-height: 1.7;
  color: #555;
  text-align: center;
  margin-bottom: 16px;
}
.course-hint-actions {
  display: flex;
  gap: 10px;
  justify-content: center;
}
.course-hint-btn {
  flex: 1;
  min-height: 44px;
  border-radius: 12px;
  font-size: 15px;
  font-weight: 600;
  border: none;
  cursor: pointer;
}
.course-hint-btn.primary { background: #4caf50; color: #fff; }
.course-hint-btn.ghost { background: #f5f5f5; color: #333; }

.pay-order-row {
  margin-bottom: 8px;
  font-size: 15px;
  word-break: break-all;
}
.pay-tip {
  margin-bottom: 14px;
  color: #666;
  font-size: 14px;
}
.pay-qrcodes {
  display: flex;
  gap: 20px;
  justify-content: space-between;
  align-items: stretch;
  margin-bottom: 16px;
}
.pay-item {
  flex: 1 1 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
}
.pay-item img {
  width: 100%;
  max-width: 260px;
  height: auto;
  display: block;
  border-radius: 8px;
  border: 1px solid #eee;
  background: #fff;
}
.pay-label {
  margin-top: 8px;
  font-size: 14px;
  color: #333;
}
#submittedBtn {
  display: block;
  margin: 0 auto;
  min-width: 160px;
}

.course-price {
  font-size: 18px;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
}
.discount-price {
  font-size: 24px;
  color: #f44336;
  font-weight: bold;
}
.original-price {
  font-size: 18px;
  color: #999999;
  text-decoration: line-through;
}

@media (max-width: 768px) {
  .course-hint-overlay { top: 110px; }
  .course-hint-card {
    width: calc(100% - 24px);
    border-radius: 16px;
    padding: 16px 14px 14px;
  }
  .course-hint-title { font-size: 18px; }
  .course-hint-desc { font-size: 14px; }
  .pay-qrcodes {
    flex-direction: column;
    align-items: center;
    gap: 16px;
  }
  .pay-item { width: 100%; }
  .pay-item img { max-width: 220px; }
}