.tutorial-quick-start {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 28px;
  padding: 24px;
  margin-bottom: 20px;
  border: 1px solid var(--border, #e2e8f0);
  border-radius: 16px;
  background: var(--surface, #fff);
}

.tutorial-quick-start p {
  margin: 0 0 6px;
  color: #059669;
  font-size: 14px;
  font-weight: 700;
}

.tutorial-quick-start h2 {
  margin: 0;
  font-size: clamp(20px, 2vw, 28px);
  line-height: 1.25;
}

.tutorial-quick-start ol {
  display: flex;
  gap: 12px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.tutorial-quick-start li {
  display: flex;
  align-items: center;
  gap: 8px;
  min-height: 44px;
  color: var(--text-muted, #64748b);
  font-size: 14px;
}

.tutorial-quick-start li strong {
  display: grid;
  flex: 0 0 28px;
  width: 28px;
  height: 28px;
  place-items: center;
  border-radius: 50%;
  color: #fff;
  background: #0f766e;
}

.tutorial-workspace {
  display: grid;
  grid-template-columns: minmax(230px, 290px) minmax(0, 1fr);
  gap: 20px;
  align-items: start;
}

.tutorial-directory,
.tutorial-article {
  border: 1px solid var(--border, #e2e8f0);
  border-radius: 16px;
  background: var(--surface, #fff);
}

.tutorial-directory {
  position: sticky;
  top: 76px;
  padding: 16px;
}

.tutorial-directory > label {
  display: block;
  margin-bottom: 10px;
  font-size: 16px;
  font-weight: 750;
}

.tutorial-directory input {
  width: 100%;
  min-height: 44px;
  padding: 0 12px;
  margin-bottom: 12px;
  border: 1px solid var(--border, #cbd5e1);
  border-radius: 12px;
  color: inherit;
  background: transparent;
  font: inherit;
}

.tutorial-directory nav {
  display: grid;
  gap: 6px;
}

.tutorial-directory button {
  width: 100%;
  min-height: 44px;
  padding: 10px 12px;
  border: 0;
  border-radius: 10px;
  color: inherit;
  background: transparent;
  text-align: left;
  cursor: pointer;
}

.tutorial-directory button:hover,
.tutorial-directory button:focus-visible,
.tutorial-directory button.active {
  background: rgba(16, 185, 129, 0.12);
  outline: none;
}

.tutorial-directory button.active {
  color: #047857;
  font-weight: 700;
}

.tutorial-directory button span,
.tutorial-directory button small {
  display: block;
}

.tutorial-directory button small {
  margin-top: 4px;
  color: #b45309;
  font-size: 12px;
}

.tutorial-article {
  padding: clamp(20px, 4vw, 44px);
}

.tutorial-article header span {
  color: #047857;
  font-size: 13px;
  font-weight: 700;
}

.tutorial-article h2 {
  margin: 8px 0 24px;
  font-size: clamp(24px, 3vw, 36px);
  line-height: 1.25;
}

.tutorial-legacy-note {
  display: grid;
  gap: 4px;
  padding: 14px 16px;
  margin-bottom: 24px;
  border-left: 4px solid #d97706;
  border-radius: 8px;
  color: #92400e;
  background: #fffbeb;
  font-size: 14px;
}

.tutorial-article-copy {
  color: var(--text, #1e293b);
  font-size: 16px;
  line-height: 1.85;
}

.tutorial-article-copy p {
  margin: 0 0 1.25em;
}

.tutorial-image-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 12px;
  margin-top: 28px;
}

.tutorial-image-button {
  min-height: 44px;
  padding: 0;
  overflow: hidden;
  border: 1px solid var(--border, #e2e8f0);
  border-radius: 12px;
  background: transparent;
  cursor: zoom-in;
}

.tutorial-image-button img {
  display: block;
  width: 100%;
  aspect-ratio: 4 / 3;
  object-fit: cover;
}

.tutorial-empty {
  min-height: 180px;
  display: grid;
  place-items: center;
  color: var(--text-muted, #64748b);
}

:root[data-theme="dark"] .tutorial-legacy-note {
  color: #fcd34d;
  background: rgba(146, 64, 14, 0.2);
}

@media (max-width: 760px) {
  .tutorial-quick-start,
  .tutorial-quick-start ol {
    align-items: stretch;
    flex-direction: column;
  }

  .tutorial-quick-start {
    padding: 18px;
  }

  .tutorial-quick-start ol {
    gap: 4px;
  }

  .tutorial-workspace {
    grid-template-columns: 1fr;
  }

  .tutorial-directory {
    position: static;
  }

  .tutorial-directory nav {
    display: flex;
    overflow-x: auto;
    scroll-snap-type: x mandatory;
  }

  .tutorial-directory button {
    flex: 0 0 82%;
    scroll-snap-align: start;
  }

  .tutorial-article {
    padding: 20px;
  }
}