:root{--bg:#f0f4f8;--surface:#fff;--surface-alt:#eaf4fb;--rail:#fff;--ink:#101010;--ink-soft:#4a5a6a;--hairline:#dbe6ee;--accent:#1090d0;--accent-2:#30b0d0;--accent-3:#50d0f0;--accent-hover:#0a78b4;--cta:#ff2f6e;--cta-hover:#e21556;--warn:#ffd21a;--tag-new:#1fbf5a;--tag-top:#ff2f6e;--tag-jp:#ff8a1a;--focus:#30b0f0;--s1:4px;--s2:8px;--s3:12px;--s4:16px;--s5:24px;--s6:32px;--s7:48px;--s8:64px;--s9:80px;--r-sm:10px;--r-md:14px;--r-lg:20px;--r-xl:28px;--r-pill:999px;--sh-sm:0 1px 2px rgba(16,32,48,.06);--sh-md:0 6px 18px rgba(16,144,208,.12);--sh-lg:0 14px 34px rgba(16,144,208,.18);--sh-focus:0 0 0 3px rgba(48,176,240,.45);--kr-section-step:48px;--kr-content-width:1360px;--kr-reading-width:70ch;--kr-bg:#f0f4f8;--kr-text:#101010;--kr-border:#dbe6ee;--kr-accent:#1090d0;--rail-w:96px;--bp:1024px}*{box-sizing:border-box}html,body{margin:0;padding:0}body{background:var(--bg);color:var(--ink);font-family:'Nunito','Baloo 2',system-ui,-apple-system,Segoe 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