:root{--primary: #409eff;--primary-dark: #337ecc;--primary-light: #66b1ff;--text-primary: #303133;--text-regular: #606266;--text-secondary: #909399;--text-placeholder: #c0c4cc;--border-color: #dcdfe6;--border-color-light: #e4e7ed;--border-color-lighter: #ebeef5;--bg-color: #f5f7fa;--bg-color-overlay: #f2f3f5;--white: #ffffff;--success: #67c23a;--warning: #e6a23c;--danger: #f56c6c;--info: #909399;--sidebar-width: 240px;--header-height: 60px;--shadow: 0 2px 12px rgba(0, 0, 0, .05);--shadow-hover: 0 4px 20px rgba(0, 0, 0, .1);--radius-sm: 4px;--radius-md: 8px;--radius-lg: 12px;--radius-xl: 16px;--transition-fast: .2s;--transition-normal: .3s}*{margin:0;padding:0;box-sizing:border-box}html,body{height:100%;font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Helvetica Neue,Arial,Noto Sans,sans-serif,"Apple Color Emoji","Segoe UI Emoji",Segoe UI Symbol,"Noto Color 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