*{margin:0;padding:0;box-sizing:border-box}body{font-family:-apple-system,BlinkMacSystemFont,Segoe UI,PingFang SC,Hiragino Sans GB,Microsoft YaHei,sans-serif;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;background:#f5f5f5}:root{--primary: #6366f1;--primary-dark: #4f46e5;--gradient: linear-gradient(135deg, #6366f1 0%, #8b5cf6 50%, #a78bfa 100%)}