:root{--navy-900: #0b1428;--navy-800: #0e1a33;--navy-700: #16264a;--navy-600: #1f3463;--amber-500: #f0a83c;--amber-300: #ffcf7a;--amber-100: #fff1d6;--amber-text: #8f5200;--cream: #fbf7ef;--cream-2: #f3ecdd;--cream-3: #e9e0cc;--color-bg: var(--cream);--color-surface: #ffffff;--color-surface-2: var(--cream-2);--color-text: #1c2333;--color-muted: #4d566b;--color-primary: var(--navy-700);--color-primary-dark: var(--navy-900);--color-accent: var(--amber-500);--color-border: #dcd4c3;--color-focus: #c2410c;--color-caution-bg: #fff6e4;--color-caution-border: var(--amber-500);--color-on-navy: #f4f1ea;--color-on-navy-muted: #c3cbdd;--font-body: -apple-system, BlinkMacSystemFont, "Helvetica Neue", "Hiragino Sans", "Hiragino Kaku Gothic ProN", "Yu Gothic", "Meiryo", "Segoe UI", Roboto, sans-serif;--font-serif: "Hiragino Mincho ProN", "Hiragino Mincho Pro", "Yu Mincho", YuMincho, "BIZ UDPMincho", "Noto Serif JP", "MS PMincho", serif;--measure: 46rem;--wide: 72rem;--radius: 8px;--radius-lg: 14px;--shadow-sm: 0 1px 2px rgba(14, 26, 51, .08), 0 1px 6px rgba(14, 26, 51, .06);--shadow-md: 0 4px 14px rgba(14, 26, 51, .12), 0 2px 4px rgba(14, 26, 51, .08);--shadow-lg: 0 18px 40px rgba(5, 10, 24, .55)}*,*:before,*:after{box-sizing:border-box}html{font-family:var(--font-body);font-size:100%;line-height:1.8;color:var(--color-text);background:var(--color-bg);-webkit-text-size-adjust:100%;overflow-wrap:anywhere;scroll-behavior:smooth}@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}}body{margin:0;min-height:100vh;display:flex;flex-direction:column}img,svg{max-width:100%;height:auto}a{color:var(--color-primary);text-decoration:underline;text-underline-offset:.15em;text-decoration-thickness:1px}a:hover{color:var(--color-primary-dark);text-decoration-thickness:2px}:focus-visible{outline:3px solid var(--color-focus);outline-offset:2px}h1,h2,h3,h4{line-height:1.4;font-weight:700;margin:2em 0 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