/* tokens.css - shadcn/ui Neutral 语义 Token */
:root {
    --background: #ffffff;
    --foreground: #0a0a0a;
    --card: #ffffff;
    --card-foreground: #0a0a0a;
    --popover: #ffffff;
    --popover-foreground: #0a0a0a;
    --primary: #171717;
    --primary-foreground: #fafafa;
    --secondary: #f5f5f5;
    --secondary-foreground: #171717;
    --muted: #f5f5f5;
    --muted-foreground: #737373;
    --accent: #f5f5f5;
    --accent-foreground: #171717;
    --destructive: #ef4444;
    --destructive-foreground: #fafafa;
    --border: #e5e5e5;
    --input: #e5e5e5;
    --ring: #a3a3a3;
    --sidebar: #fafafa;
    --sidebar-foreground: #0a0a0a;
    --sidebar-primary: #171717;
    --sidebar-primary-foreground: #fafafa;
    --sidebar-accent: #f5f5f5;
    --sidebar-accent-foreground: #171717;
    --sidebar-border: #e5e5e5;
    --radius: 0.625rem;
    --radius-sm: 0.375rem;
    --radius-md: 0.5rem;
    --radius-lg: 0.625rem;
    --radius-xl: 0.875rem;
    --font-sans: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
    --font-mono: "JetBrains Mono", "Fira Code", monospace;
    --shadow-sm: 0 1px 2px rgba(0,0,0,0.05);
    --shadow-md: 0 4px 6px -1px rgba(0,0,0,0.1), 0 2px 4px -2px rgba(0,0,0,0.1);
    --shadow-lg: 0 10px 15px -3px rgba(0,0,0,0.1), 0 4px 6px -4px rgba(0,0,0,0.1);
}