:root{--bg: #f7f7f7;--panel: #ffffff;--text: #222}*{box-sizing:border-box}body{margin:0;font-family:Inter,system-ui,-apple-system,Segoe UI,Roboto,Helvetica Neue,Arial;background:var(--bg);color:var(--text);-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}.app-root{display:flex;flex-direction:column;gap:12px;margin-top:100px}.title{margin:0;font-size:20px}.game-area{position:relative;width:800px;max-width:96vw}canvas{width:100%;max-width:800px;height:auto;display:block;background:var(--panel)}.hud{position:absolute;top:8px;right:12px;font-family:monospace;font-size:18px;color:#333;pointer-events:none}.overlay{margin-top:12px;text-align:center}kbd{background:#eee;border-radius:4px;padding:2px 6px;border:1px solid #ccc;font-family:monospace}