:root{--bg: #0a0c12;--panel: #161a24;--text: #e6e9ef;--accent: #39c0ed}*{box-sizing:border-box}html,body{margin:0;padding:0;background:var(--bg);color:var(--text);font-family:system-ui,sans-serif}#app{display:flex;flex-direction:column;align-items:center;gap:12px;padding:16px}h1{margin:0;font-size:22px;letter-spacing:2px;color:var(--accent)}#hud{font-family:monospace;font-size:15px;background:var(--panel);padding:6px 14px;border-radius:6px}#game{background:#10131a;border:2px solid #2a3142;border-radius:6px;image-rendering:pixelated}.help{max-width:680px;font-size:13px;color:#9aa3b2;line-height:1.5;text-align:center}.help kbd{background:#2a3142;border-radius:4px;padding:1px 6px;font-family:monospace;color:#e6e9ef}