:root{--bg: #1c2433;--panel: rgba(20, 26, 40, .92);--accent: #ffb454;--good: #5ad17a;--bad: #ff6b6b;--text: #f2f4f8;font-family:system-ui,-apple-system,Segoe UI,Roboto,sans-serif}*{box-sizing:border-box;-webkit-tap-highlight-color:transparent}html,body{margin:0;height:100%;overflow:hidden;background:var(--bg);color:var(--text)}#renderCanvas{position:fixed;inset:0;width:100%;height:100%;outline:none;touch-action:none}#ui{position:fixed;inset:0;pointer-events:none;z-index:10}#ui>*{pointer-events:auto}.hidden{display:none!important}.hud{position:fixed;top:env(safe-area-inset-top,8px);left:8px;right:8px;display:flex;justify-content:space-between;align-items:flex-start;gap:8px;pointer-events:none;padding-left:48px}.back-btn{position:fixed;top:calc(env(safe-area-inset-top,8px) + 4px);left:8px;z-index:15;width:40px;height:40px;border-radius:50%;padding:0 3px 3px 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