/* Override the app's max-width flex-column body for a readable doc */
body {
  display: block;
  max-width: 680px;
  padding: 32px 20px 64px;
}

/* Hero */
.tutorial-hero {
  text-align: center;
  padding: 48px 0 40px;
}
.tutorial-hero h1 {
  font-size: 2.4rem;
  margin-bottom: 4px;
}
.tutorial-hero .subtitle {
  font-size: 1rem;
  color: #aaa;
  margin-bottom: 24px;
}
.tutorial-tagline {
  font-size: 1.2rem;
  color: #e94560;
  font-weight: 600;
  line-height: 1.4;
  margin-bottom: 16px;
}
.tutorial-hero p {
  color: #bbb;
  font-size: 0.95rem;
}

/* Sections */
.tutorial-section {
  margin: 48px 0;
}
.tutorial-section h2 {
  font-size: 1.4rem;
  margin-bottom: 12px;
  color: #fff;
}
.tutorial-section p {
  color: #ccc;
  line-height: 1.7;
  margin-bottom: 12px;
}
.tutorial-highlight {
  background: #16213e;
  border-left: 3px solid #e94560;
  padding: 14px 18px;
  border-radius: 0 8px 8px 0;
  color: #ddd;
  margin-top: 16px;
  font-size: 0.95rem;
}

/* Feature blocks */
.feature-block {
  display: flex;
  flex-direction: row;
  gap: 16px;
  align-items: flex-start;
  margin-bottom: 32px;
}
/* variant: two thumbnails side by side before the text */
.feature-thumbnails-pair {
  display: flex;
  flex-direction: column;
  gap: 6px;
  flex-shrink: 0;
}
.feature-thumbnail {
  flex-shrink: 0;
  width: 90px;
  cursor: pointer;
  border-radius: 8px;
  overflow: hidden;
  border: 2px solid transparent;
  transition: border-color 0.15s;
}
.feature-thumbnail:hover {
  border-color: #e94560;
}
.feature-thumbnail img {
  width: 100%;
  display: block;
  border-radius: 6px;
}
.feature-text { flex: 1; }
.feature-label {
  font-weight: 700;
  color: #fff;
  font-size: 1rem;
  margin-bottom: 4px;
}
.feature-desc {
  color: #bbb;
  font-size: 0.95rem;
  line-height: 1.6;
}
.feature-zoom-hint {
  font-size: 0.75rem;
  color: #666;
  margin-top: 6px;
}

/* Lightbox */
.lightbox {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.85);
  z-index: 1000;
  align-items: center;
  justify-content: center;
  padding: 20px;
}
.lightbox.open { display: flex; }
.lightbox-img {
  max-width: 100%;
  max-height: 90vh;
  border-radius: 10px;
  box-shadow: 0 8px 40px rgba(0,0,0,0.6);
}
.lightbox-close {
  position: fixed;
  top: 16px;
  right: 20px;
  background: none;
  border: none;
  color: #fff;
  font-size: 2rem;
  cursor: pointer;
  line-height: 1;
  opacity: 0.8;
}
.lightbox-close:hover { opacity: 1; }

/* Get started steps */
.steps {
  counter-reset: step;
  list-style: none;
  padding: 0;
}
.steps li {
  counter-increment: step;
  display: flex;
  gap: 16px;
  align-items: flex-start;
  margin-bottom: 20px;
  color: #ccc;
  line-height: 1.6;
}
.steps li::before {
  content: counter(step);
  background: #e94560;
  color: #fff;
  font-weight: 700;
  width: 28px;
  height: 28px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  font-size: 0.9rem;
}

/* CTA */
.tutorial-cta {
  text-align: center;
  padding: 32px 0 16px;
}
.tutorial-cta .btn {
  text-decoration: none;
  display: inline-block;
  font-size: 1.1rem;
  padding: 14px 32px;
}