:root { --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 Emoji'; /* Default background color of ...etc */ --background: 0 0% 100%; /* 主体区域背景色 */ --background-deep: 216 20.11% 95.47%; --foreground: 210 6% 21%; /* Background color for */ --card: 0 0% 100%; --card-foreground: 222.2 84% 4.9%; /* Background color for popovers such as , , */ --popover: 0 0% 100%; --popover-foreground: 222.2 84% 4.9%; /* Muted backgrounds such as , and */ /* --muted: 210 40% 96.1%; --muted-foreground: 215.4 16.3% 46.9%; */ --muted: 240 4.8% 95.9%; --muted-foreground: 240 3.8% 46.1%; /* 主题颜色 */ --primary: 212 100% 45%; --primary-foreground: 0 0% 98%; /* Used for destructive actions such as