.calculator[data-v-f83714cb]{width:100%;max-width:280px;padding:12px;border:1px solid #ccc;border-radius:8px;box-sizing:border-box}#display[data-v-f83714cb]{width:100%;height:50px;margin-bottom:12px;text-align:right;font-size:22px;padding:8px 12px;box-sizing:border-box;border:1px solid #ddd;border-radius:4px}.buttons[data-v-f83714cb]{display:grid;grid-template-columns:repeat(4,1fr);gap:6px;touch-action:manipulation}button[data-v-f83714cb]{height:52px;font-size:20px;cursor:pointer;touch-action:manipulation;-webkit-tap-highlight-color:transparent;user-select:none;-webkit-user-select:none;border:1px solid #ddd;border-radius:4px;background:#f5f5f5}button[data-v-f83714cb]:active{background:#e0e0e0}@media (max-width: 320px){.calculator[data-v-f83714cb]{padding:8px;max-width:260px}.buttons[data-v-f83714cb]{gap:4px}button[data-v-f83714cb]{height:46px;font-size:18px}#display[data-v-f83714cb]{height:42px;font-size:20px}}*{margin:0;padding:0;box-sizing:border-box}body{font-family:system-ui,sans-serif;padding:20px}#app{display:flex;justify-content:center;margin-top:40px}