*{margin:0;padding:0;box-sizing:border-box}html,body,#root{width:100%;height:100%}:root{--board-size: min(90vw, 400px);--cell-size: calc(var(--board-size) / 8);--cell-gap: 3px;--primary-color: #7CB342;--background-color: #1a1a2e;--surface-color: #16213e;--text-color: #ffffff;--text-secondary: rgba(255, 255, 255, .7)}*{box-sizing:border-box}body{margin:0;font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,sans-serif;background:var(--background-color);color:var(--text-color);min-height:100vh;touch-action:none;-webkit-user-select:none;user-select:none}.game-container{display:flex;flex-direction:column;align-items:center;min-height:100vh;padding:16px;gap:16px}.game-header{display:flex;justify-content:space-between;align-items:center;width:100%;max-width:400px;padding:8px 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