.sk-card, .sk-line, .sk-chart, .sk-block {
  background: linear-gradient(90deg, #e2e8f0 25%, #f1f5f9 50%, #e2e8f0 75%);
  background-size: 200% 100%; animation: shimmer 1.2s infinite; border-radius: 12px;
}
.sk-card { height: 100px; margin-bottom: 10px; }
.sk-line { height: 20px; margin-bottom: 8px; }
.sk-chart { height: 160px; }
.sk-block { height: 48px; margin-bottom: 8px; }