:root{--color-bg: #f5f6f8;--color-surface: #ffffff;--color-text: #1a1a1a;--color-text-muted: #666666;--color-border: #e0e0e0;--color-primary: #1a73e8;--color-primary-hover: #1558b0;--color-danger: #d32f2f;--color-danger-bg: #fdecea;--radius: 10px;--shadow: 0 2px 12px rgba(0, 0, 0, .08)}*{box-sizing:border-box}html,body{margin:0;padding:0;height:100%}body{font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Helvetica,Arial,sans-serif,"Apple Color Emoji","Segoe UI Emoji";background:var(--color-bg);color:var(--color-text);-webkit-font-smoothing:antialiased}h1,h2,h3,button,input,textarea{font-family:inherit}