:root{font-family:Inter,system-ui,Avenir,Helvetica,Arial,sans-serif;line-height:1.5;font-weight:400;--primary-color: #81D4FA;--primary-hover: #4FC3F7;--background-color: #f5f7fa;--surface-color: #ffffff;--text-color: #333333;--text-secondary: #666666;--border-color: #e0e0e0;--accent-staircase: #A9A9A9;--accent-type-a: #039BE5;--accent-type-b: #29B6F6;--accent-type-c: #4FC3F7;--accent-type-d: #81D4FA;--surface-secondary: #f8f9fa;--surface-highlight: #e7f5ff;--surface-hover: #e9ecef;--text-muted: #888888;color-scheme:light;color:var(--text-color);background-color:var(--background-color);font-synthesis:none;text-rendering:optimizeLegibility;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}body{margin:0;display:flex;place-items:center;min-width:320px;min-height:100vh;background-color:var(--background-color);touch-action:none}h1,h2,h3,h4,h5,h6{font-weight:600;color:var(--text-color);margin-top:0}button{border-radius:6px;border:1px solid transparent;padding:.6em 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