.tutorial-hero {
  margin: 0 0 2rem;
  padding: 1.5rem;
  border: 1px solid #d8e2dc;
  border-radius: 1rem;
  background: linear-gradient(135deg, #f5fbf7 0%, #eef7f2 100%);
}

.tutorial-meta {
  color: #46635b;
}

.tutorial-exercise {
  margin: 1.5rem 0;
  padding: 1rem 1rem 0.25rem;
  border-left: 4px solid #4e8b74;
  background: #fbfcfb;
}

.tutorial-hint,
.tutorial-solution {
  margin: 1rem 0;
  padding: 0.75rem 1rem;
  border: 1px solid #d6dfda;
  border-radius: 0.75rem;
  background: #ffffff;
}

.tutorial-hint summary,
.tutorial-solution summary {
  cursor: pointer;
  font-weight: 600;
}

.tutorial-quiz-placeholder {
  margin: 1.5rem 0;
  padding: 1rem 1.25rem;
  border: 1px dashed #9ab7ab;
  border-radius: 0.9rem;
  background: #f8fbf9;
}

.tutorial-complete {
  margin: 2rem 0 0;
  padding: 1rem 1.25rem;
  border: 1px solid #d8e2dc;
  border-radius: 0.9rem;
  background: #f4faf6;
}

.tutorial-complete button,
.tutorial-quiz-placeholder button {
  margin-top: 0.75rem;
}

.tutorial-video {
  position: relative;
  left: 50%;
  width: min(100vw - 2rem, 1100px);
  max-width: 100%;
  margin: 1.5rem 0;
  transform: translateX(-50%);
  border-radius: 1rem;
  overflow: hidden;
  box-shadow: 0 18px 48px rgba(26, 60, 47, 0.14);
  background: #000;
}

.tutorial-video > p {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  margin: 0;
}

.tutorial-video iframe {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  border: 0;
}

@media (max-width: 768px) {
  .tutorial-video {
    width: min(100vw - 1rem, 100%);
    border-radius: 0.75rem;
  }
}