:root{--paper-0: #fdfbf7;--paper-1: #fffdf8;--paper-2: #f3ede3;--ink-0: #1a1a1a;--ink-1: #4a4a4a;--ink-2: #8a847c;--stone-500: #78716c;--amber-600: #d97706;--green-700: #15803d;--red-600: #dc2626;--color-primary: var(--ink-0);--color-on-primary: var(--paper-0);--color-secondary: var(--stone-500);--color-on-secondary: var(--paper-0);--color-accent: var(--amber-600);--color-on-accent: var(--ink-0);--color-background: var(--paper-0);--color-foreground: var(--ink-0);--color-card: var(--paper-1);--color-card-foreground: var(--ink-0);--color-muted: var(--paper-2);--color-muted-foreground: var(--ink-1);--color-border: #d9d1c7;--color-destructive: var(--red-600);--color-on-destructive: #ffffff;--color-ring: var(--ink-0);--color-success: var(--green-700);--cell-black: var(--ink-0);--cell-x: var(--ink-2);--cell-empty: #fffaf2;--grid-line: #d9d1c7;--grid-line-strong: #2a2a2a;--space-xs: 4px;--space-sm: 8px;--space-md: 16px;--space-lg: 24px;--space-xl: 32px;--space-2xl: 48px;--radius-sm: 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