:root{--text-primary: #1a1a1a;--text-secondary: #666;--bg-primary: #fff;--bg-secondary: #fafafa;--bg-hover: #f0f0f0;--border: #e0e0e0;--border-hover: #ccc}*{box-sizing:border-box;margin:0;padding:0}html{font-family:DM Sans,system-ui,-apple-system,BlinkMacSystemFont,sans-serif;font-size:16px;line-height:1.5;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}body{background:var(--bg-primary);color:var(--text-primary);min-height:100vh}::selection{background:#d0d0d0}