.radius-stage {
  min-height: 260px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--bg-muted);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  margin-bottom: 16px;
  padding: 32px;
}
.radius-box {
  width: min(220px, 70vw);
  height: 160px;
  background: linear-gradient(135deg, var(--primary), #0d47a1);
  box-shadow: var(--shadow);
}
.corner-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(160px, 1fr));
  gap: 12px;
}
.css-out { font-family: var(--font-mono); font-size: 0.85rem; min-height: 90px; }