body{font-family:Arial,sans-serif;margin:0;background:#f6f6f9;color:#1a1a1a}.container{max-width:1200px;margin:24px auto;padding:0 16px}.card{background:#fff;padding:16px;border-radius:8px;box-shadow:0 2px 8px #0000000f}.row{display:flex;flex-direction:column;margin-bottom:12px}input{padding:10px;border:1px solid #ddd;border-radius:6px}button{padding:10px 16px;border:none;border-radius:6px;background:#111;color:#fff;cursor:pointer}button+button{margin-left:8px}.toolbar{margin:16px 0}.grid{display:grid;grid-template-columns:repeat(4,1fr);gap:12px;margin:16px 0}.stat{background:#fff;padding:12px;border-radius:8px;box-shadow:0 2px 8px #0000000f}.error{color:#b00020}table{width:100%;border-collapse:collapse;margin:12px 0 24px;background:#fff}th,td{padding:8px 10px;border-bottom:1px solid #eee;text-align:left}@media(max-width:900px){.grid{grid-template-columns:1fr 1fr}}