.dev-hero {
  max-width: 800px;
  margin: 0 auto;
  padding: 5rem 2rem;
  text-align: center;
}

.dev-hero-content {
  display: grid;
}

.dev-hero h1 {
  margin-bottom: 1.5rem;
  font-size: clamp(2.5rem, 6vw, 4rem);
  font-weight: 800;
  line-height: 1.1;
}

.dev-hero .highlight {
  display: inline-block;
  padding: 0 0.25em;
  border: 2px solid var(--color-orange);
  background: var(--color-orange);
  color: var(--color-black);
  transform: rotate(-1deg);
}

.dev-hero p {
  margin-bottom: 2rem;
  color: var(--color-text-muted);
  font-size: 1.25rem;
}

.dev-hero .strikethrough {
  opacity: 0.6;
  text-decoration: line-through;
}

.dev-hero-btns {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 1rem;
}

.dev-compare {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 2rem;
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 2rem 4rem;
}

.compare-block {
  overflow: hidden;
  border: 3px solid var(--compare-color, var(--color-orange));
  background: var(--color-surface);
  box-shadow: 4px 4px 0 var(--compare-color, var(--color-orange));
}

.compare-block.old {
  --compare-color: var(--color-red);
}

.compare-block.new {
  --compare-color: var(--color-green);
  box-shadow: 6px 6px 0 var(--compare-color);
}

.compare-header {
  padding: 0.75rem 1.25rem;
}

.compare-badge {
  display: inline-block;
  padding: 0.4rem 0.75rem;
  font-size: 0.8rem;
  font-weight: 800;
  letter-spacing: 0.05em;
  text-transform: uppercase;
}

.compare-badge.bad,
.compare-badge.good {
  color: var(--color-black);
}

.compare-badge.bad {
  background: var(--color-red);
}

.compare-badge.good {
  background: var(--color-green);
}

.compare-block pre {
  overflow-x: auto;
  margin: 0;
  padding: 1.5rem;
  border-top: 2px solid var(--compare-color, var(--color-orange));
}

.compare-block code {
  color: var(--color-text-muted);
  font-family: "SF Mono", "Fira Code", "Consolas", monospace;
  font-size: 0.85rem;
  line-height: 1.6;
}

.dev-features {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1.5rem;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 2rem 4rem;
}

.dev-feature {
  padding: 1.75rem;
  border: var(--orange-border);
  background: var(--color-surface);
  box-shadow: var(--orange-shadow);
  text-align: center;
  transition:
    transform 0.15s ease,
    box-shadow 0.15s ease;
}

.dev-feature:hover {
  transform: translate(-4px, -4px);
  box-shadow: var(--orange-shadow-hover);
}

.dev-feature-icon {
  margin-bottom: 1rem;
  color: var(--color-orange);
  font-size: 2rem;
}

.dev-feature h3 {
  margin-bottom: 0.5rem;
  font-size: 1.1rem;
  font-weight: 800;
}

.dev-feature p {
  color: var(--color-text-muted);
  font-size: 0.9rem;
  line-height: 1.5;
}

.dev-stats {
  display: flex;
  justify-content: center;
  gap: 4rem;
  padding: 3rem 2rem;
  border-top: var(--orange-border);
  border-bottom: var(--orange-border);
  background: var(--color-orange);
}

.dev-stat {
  text-align: center;
}

.dev-stat-val {
  display: block;
  color: var(--color-black);
  font-size: 3rem;
  font-weight: 800;
  line-height: 1;
}

.dev-stat-label {
  color: var(--color-black);
  font-size: 0.85rem;
  font-weight: 700;
  letter-spacing: 0.05em;
  opacity: 0.8;
  text-transform: uppercase;
}

.dev-cta {
  padding: 4rem 2rem;
  text-align: center;
}

.dev-cta h2 {
  margin-bottom: 1.5rem;
  font-size: 2.5rem;
  font-weight: 800;
}

.dev-cta-btns {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 1rem;
}

.dev-guide {
  max-width: 1000px;
  margin: 0 auto;
  padding: 4rem 2rem;
}

.guide-container {
  overflow: hidden;
  border: var(--orange-border);
  background: var(--color-surface);
  box-shadow: var(--orange-shadow-large);
}

.guide-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1.5rem 2rem;
  border-bottom: 2px solid var(--color-orange);
  background: var(--color-bg);
}

.guide-header h2 {
  font-size: 1.5rem;
  font-weight: 800;
}

.lang-selector {
  display: flex;
  gap: 0.5rem;
}

.lang-btn {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.5rem 1rem;
  border: 2px solid #333;
  background: transparent;
  color: var(--color-text-muted);
  cursor: pointer;
  font-family: var(--font-base);
  font-weight: 700;
  transition: all 0.15s ease;
}

.lang-btn i {
  font-size: 1.1rem;
}

.lang-btn:hover {
  border-color: var(--color-orange);
  color: var(--color-orange);
}

.lang-btn.active {
  border-color: var(--color-orange);
  background: var(--color-orange);
  color: var(--color-black);
}

.guide-content {
  display: none;
  padding: 2.5rem;
}

.guide-content.active {
  display: block;
}

.guide-step {
  margin-bottom: 2rem;
}

.guide-step:last-child {
  margin-bottom: 0;
}

.guide-step h3 {
  margin-bottom: 1rem;
  color: var(--color-orange);
  font-size: 1.25rem;
  font-weight: 800;
}

.guide-step p {
  margin-bottom: 1rem;
  color: var(--color-text-muted);
}

.guide-step pre {
  overflow-x: auto;
  margin-bottom: 1rem;
  padding: 1.25rem;
  background: var(--color-bg);
  border-left: 4px solid var(--color-orange);
}

.guide-step code {
  color: var(--color-text);
  font-family: "SF Mono", "Fira Code", "Consolas", monospace;
  font-size: 0.9rem;
  line-height: 1.6;
}

.guide-more {
  margin-top: 2rem;
  padding-top: 1.5rem;
  border-top: 1px solid #333;
  text-align: center;
  font-weight: 600;
}

.guide-more a {
  color: var(--color-orange);
  text-decoration: underline;
}

@media (max-width: 1024px) {
  .dev-compare {
    grid-template-columns: 1fr;
  }

  .dev-features {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 768px) {
  .dev-hero {
    padding: 3rem 1.5rem;
  }

  .dev-hero h1 {
    font-size: 2.25rem;
  }

  .dev-hero-btns,
  .dev-cta-btns {
    flex-direction: column;
    align-items: center;
  }

  .dev-hero-btns .btn,
  .dev-cta-btns .btn {
    justify-content: center;
    width: 100%;
    max-width: 280px;
  }

  .dev-features {
    grid-template-columns: 1fr;
    padding: 0 1.5rem 3rem;
  }

  .dev-stats {
    flex-direction: column;
    gap: 2rem;
  }

  .dev-stat-val {
    font-size: 2.5rem;
  }

  .dev-cta h2 {
    font-size: 1.75rem;
  }
}