body { font-family: system-ui, -apple-system, "Segoe UI", Arial; padding: 24px; }
.menu { list-style: none; padding: 0; display: flex; gap: 10px; }
button { padding: 8px 12px; border-radius: 8px; border: 1px solid #ccc; background: #fff; }
button:hover { cursor: pointer; background: #f3f3f3; }
.card { margin-top: 12px; padding: 12px; border: 1px solid #ddd; border-radius: 8px; }