:root{--bg-base: #FFFFFF;--bg-card: #FBFAF7;--bg-section: #F7F4EF;--lego-red: #DC4837;--lego-blue: #0055BF;--lego-yellow: #F2CD37;--lego-green: #4B9F4A;--text-body: #2D2520;--text-heading: #1A1410;--text-muted: #6B5F55;--border: #E5DDD3;--shadow-sm: 0 1px 2px rgba(45,37,32,.06), 0 2px 6px rgba(45,37,32,.06);--shadow-md: 0 2px 4px rgba(45,37,32,.06), 0 8px 24px rgba(45,37,32,.08);--shadow-lg: 0 4px 8px rgba(45,37,32,.08), 0 16px 40px rgba(45,37,32,.12);--font-jp: "Noto Sans JP", "Hiragino Kaku Gothic ProN", "游ゴシック", "Yu Gothic", sans-serif;--font-en: "Inter", -apple-system, BlinkMacSystemFont, sans-serif;--font-mono: "JetBrains Mono", ui-monospace, 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