.download-hero {
  padding: calc(var(--nav-height) + 48px) 0 40px;
  text-align: center;
}

.download-hero h1 {
  font-size: clamp(2rem, 4vw, 2.8rem);
  font-weight: 800;
  color: var(--primary-dark);
  margin: 0 0 12px;
  letter-spacing: -0.02em;
}

.download-hero .hero-subtitle {
  font-size: 1.1rem;
  color: var(--primary);
  font-weight: 600;
  margin: 0 0 16px;
}

.download-hero .hero-desc {
  max-width: 640px;
  margin: 0 auto 24px;
  color: var(--text-secondary);
  font-size: 1.02rem;
}

.version-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 16px;
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: 999px;
  font-size: 0.88rem;
  color: var(--text-secondary);
}

.version-badge strong {
  color: var(--primary-dark);
}

.download-demo-banner {
  max-width: 640px;
  margin-left: auto;
  margin-right: auto;
  margin-top: 28px;
  text-align: left;
}

.download-demo-banner code {
  display: inline;
  background: var(--bg-muted);
  border: 1px solid var(--border-light);
  padding: 2px 8px;
  border-radius: 4px;
  font-size: 0.85rem;
  color: var(--primary-dark);
}

.download-demo-actions {
  margin-top: 14px;
}

.download-section {
  padding: 48px 0;
}

.download-section.alt {
  background: var(--bg-elevated);
}

.download-section-title {
  font-size: 1.5rem;
  font-weight: 800;
  color: var(--primary-dark);
  margin: 0 0 8px;
}

.download-section-desc {
  color: var(--text-secondary);
  margin: 0 0 28px;
  max-width: 720px;
}

.download-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 20px;
}

.ai-download-grid {
  grid-template-columns: minmax(0, 720px);
}

.download-card {
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 28px 24px;
  display: flex;
  flex-direction: column;
  transition: box-shadow var(--transition), border-color var(--transition);
}

.download-section.alt .download-card {
  background: var(--bg);
}

.download-card:hover {
  border-color: var(--primary-soft);
  box-shadow: var(--shadow-md);
}

.download-card-icon {
  font-size: 2.2rem;
  margin-bottom: 14px;
}

.download-card h3 {
  margin: 0 0 6px;
  font-size: 1.15rem;
  color: var(--primary-dark);
}

.download-card .platform-meta {
  font-size: 0.85rem;
  color: var(--text-muted);
  margin: 0 0 14px;
}

.download-card .platform-desc {
  font-size: 0.9rem;
  color: var(--text-secondary);
  margin: 0 0 18px;
  flex: 1;
  line-height: 1.55;
}

.download-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.download-actions .btn {
  font-size: 0.9rem;
  padding: 10px 18px;
}

.download-actions .btn-outline {
  background: transparent;
  border: 1px solid var(--border);
  color: var(--text-secondary);
}

.download-actions .btn-outline:hover {
  background: var(--bg-muted);
  color: var(--primary-dark);
}

.download-card.ios-card {
  border-color: #bfdbfe;
  background: linear-gradient(180deg, #f8fbff 0%, var(--bg-elevated) 100%);
}

.download-section.alt .download-card.ios-card {
  background: linear-gradient(180deg, #f8fbff 0%, var(--bg) 100%);
}

.appstore-guide {
  margin-top: 14px;
  padding: 16px 18px;
  background: var(--bg-muted);
  border-radius: var(--radius-sm);
  border: 1px solid var(--border-light);
}

.appstore-guide strong {
  display: block;
  font-size: 0.92rem;
  color: var(--primary-dark);
  margin-bottom: 8px;
}

.appstore-keywords {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 12px;
}

.appstore-keywords span {
  padding: 6px 12px;
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: 8px;
  font-size: 0.88rem;
  font-weight: 600;
  color: var(--primary);
}

.appstore-steps {
  margin: 0;
  padding-left: 1.2em;
  font-size: 0.88rem;
  color: var(--text-secondary);
  line-height: 1.65;
}

.install-notes {
  margin-top: 48px;
  padding: 28px;
  background: var(--bg-muted);
  border: 1px solid var(--border-light);
  border-radius: var(--radius);
}

.install-notes h3 {
  margin: 0 0 16px;
  font-size: 1.05rem;
  color: var(--primary-dark);
}

.install-notes details {
  margin-bottom: 10px;
  background: var(--bg-elevated);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-sm);
  padding: 12px 16px;
}

.install-notes summary {
  cursor: pointer;
  font-weight: 600;
  color: var(--text);
  font-size: 0.95rem;
}

.install-notes pre {
  margin: 12px 0 0;
  padding: 12px 14px;
  background: var(--bg);
  border-radius: 8px;
  overflow-x: auto;
  font-size: 0.82rem;
  line-height: 1.5;
  color: var(--primary-dark);
}

.download-unavailable {
  font-size: 0.85rem;
  color: var(--text-muted);
  font-style: italic;
}

.download-actions .btn.is-disabled {
  opacity: 0.45;
  pointer-events: none;
  cursor: not-allowed;
}