@import url("https://fonts.googleapis.com/css2?family=Noto+Serif+JP:wght@400;700;900&family=Noto+Sans+JP:wght@300;400;500;600;700&family=IBM+Plex+Mono:wght@400;500&display=swap");:root{--ink:#0d1117;--ink-soft:#1c2433;--slate:#3d4a5c;--drift:#6b7a8d;--mist:#9ba7b4;--cloud:#d4dae3;--fog:#edf0f4;--paper:#f6f7fb;--white:#fff;--accent:#1d5bf5;--accent-soft:#e8effe;--accent-glow:rgba(29,91,245,.12);--accent-deep:#143fa8;--green:#0a8754;--green-soft:#e6f5ee;--warm:#f5ede3;--warm-deep:#a68b6b;--rose:#e84057;--rose-soft:#fdf0f1;--font-serif:"Noto Serif JP","Hiragino Mincho ProN",serif;--font-sans:"Noto Sans JP","Hiragino Sans",sans-serif;--font-mono:"IBM Plex Mono",ui-monospace,monospace;--max-w:1120px;--header-h:72px;--radius:14px;--radius-lg:22px;--radius-full:999px;--shadow-xs:0 1px 2px rgba(13,17,23,.04);--shadow-sm:0 2px 8px rgba(13,17,23,.06);--shadow-md:0 4px 16px rgba(13,17,23,.06),0 12px 40px rgba(13,17,23,.04);--shadow-lg:0 8px 30px rgba(13,17,23,.08),0 20px 60px 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