:root{--color-accent: #1e3a5f;--color-accent-dark: #162d4a;--color-accent-bright: #1d4ed8;--color-highlight: #f59e0b;--color-highlight-bg: rgba(245, 158, 11, .15);--color-success: #2e7d32;--color-bg: #f4f6f9;--color-surface: #ffffff;--color-navy-bg: #1e3a5f;--color-navy-surface: #243f6a;--color-text: #1a2332;--color-text-muted: #5f6b7a;--color-text-on-navy: #f0f4f8;--color-border: #dce3ed;--color-border-navy: rgba(255, 255, 255, .12);--radius-sm: 8px;--radius-md: 12px;--radius-lg: 16px;--shadow-card: 0 1px 3px rgba(20, 30, 50, .07), 0 4px 12px rgba(20, 30, 50, .06);--shadow-card-hover: 0 8px 20px rgba(20, 30, 50, .14), 0 14px 32px rgba(20, 30, 50, .1);--shadow-navy: 0 4px 20px rgba(30, 58, 95, .35);--space-section: 3.5rem;--content-width: 720px;--wide-width: 1040px;--accent: var(--color-accent);--accent-dark: var(--color-accent-dark);--black: 26, 35, 50;--gray: 95, 107, 122;--gray-light: 220, 227, 237;--gray-dark: 26, 35, 50;--gray-gradient: var(--color-bg), var(--color-bg);--box-shadow: var(--shadow-card-hover)}body{font-family:var(--font-atkinson),"Hiragino Sans","Hiragino Kaku Gothic ProN","Noto Sans JP",Meiryo,sans-serif;margin:0;padding:0;text-align:left;background:var(--color-bg);word-wrap:break-word;overflow-wrap:break-word;color:var(--color-text);font-size:20px;line-height:1.8}main{width:720px;max-width:calc(100% - 2em);margin:auto;padding:3em 1em}h1,h2,h3,h4,h5,h6{margin:0 0 .5rem;color:rgb(var(--black));line-height:1.2}h1{font-size:3.052em}h2{font-size:2.441em}h3{font-size:1.953em}h4{font-size:1.563em}h5{font-size:1.25em}strong,b{font-weight:700}a{color:var(--color-accent)}a:hover{color:var(--color-accent-dark)}p{margin-bottom:1em}.prose p{margin-bottom:2em}textarea{width:100%;font-size:16px}input{font-size:16px}table{width:100%}img{max-width:100%;height:auto;border-radius:8px}code{padding:2px 5px;background-color:rgb(var(--gray-light));border-radius:2px}pre{padding:1.5em;border-radius:8px}pre>code{all:unset}blockquote{border-left:4px solid var(--accent);padding:0 0 0 20px;margin:0;font-size:1.333em}hr{border:none;border-top:1px solid rgb(var(--gray-light))}@media(max-width:720px){body{font-size:18px}main{padding:1em}}.sr-only{border:0;padding:0;margin:0;position:absolute!important;height:1px;width:1px;overflow:hidden;clip:rect(1px 1px 1px 1px);clip:rect(1px,1px,1px,1px);clip-path:inset(50%);white-space:nowrap}footer[data-astro-cid-sz7xmlte]{padding:2.5em 1em 5em;background:var(--color-navy-bg);color:var(--color-text-on-navy);text-align:center;border-top:3px solid var(--color-highlight)}.footer-links[data-astro-cid-sz7xmlte]{display:flex;justify-content:center;flex-wrap:wrap;gap:1.5em;margin-bottom:1em}.footer-links[data-astro-cid-sz7xmlte] a[data-astro-cid-sz7xmlte]{color:#f0f4f8bf;text-decoration:none;font-size:.9em;transition:color .18s ease}.footer-links[data-astro-cid-sz7xmlte] a[data-astro-cid-sz7xmlte]:hover{color:var(--color-highlight);text-decoration:underline}.social-links[data-astro-cid-sz7xmlte]{display:flex;justify-content:center;gap:1em;margin-top:1em}.social-links[data-astro-cid-sz7xmlte] a[data-astro-cid-sz7xmlte]{text-decoration:none;color:#f0f4f8bf}.social-links[data-astro-cid-sz7xmlte] a[data-astro-cid-sz7xmlte]:hover{color:var(--color-highlight)}a[data-astro-cid-eimmu3lg]{display:inline-block;text-decoration:none}a[data-astro-cid-eimmu3lg].active{font-weight:bolder;text-decoration:underline}header[data-astro-cid-3ef6ksr2]{margin:0;background:var(--color-navy-bg);border-bottom:3px solid var(--color-highlight);position:sticky;top:0;z-index:50;box-shadow:var(--shadow-navy)}nav[data-astro-cid-3ef6ksr2]{display:flex;align-items:center;justify-content:space-between;gap:1rem;max-width:var(--wide-width);margin:0 auto;padding:0 1.25rem}.brand[data-astro-cid-3ef6ksr2]{font-weight:700;font-size:1.18rem;color:var(--color-text-on-navy);text-decoration:none;padding:.9rem 0;white-space:nowrap;letter-spacing:.02em}.brand[data-astro-cid-3ef6ksr2]:hover{color:var(--color-highlight)}.internal-links[data-astro-cid-3ef6ksr2]{display:flex;align-items:center;gap:.25rem}.internal-links[data-astro-cid-3ef6ksr2] a{padding:.85rem .7rem;color:#f0f4f8d9;border-bottom:3px solid transparent;text-decoration:none;font-size:.95rem;transition:color .18s ease,border-color .18s ease}.internal-links[data-astro-cid-3ef6ksr2] a:hover{color:var(--color-highlight)}.internal-links[data-astro-cid-3ef6ksr2] a.active{border-bottom-color:var(--color-highlight);color:var(--color-highlight)}.nav-toggle[data-astro-cid-3ef6ksr2]{display:none;flex-direction:column;justify-content:center;gap:5px;width:44px;height:44px;padding:0;background:none;border:none;cursor:pointer}.nav-toggle[data-astro-cid-3ef6ksr2] .bar[data-astro-cid-3ef6ksr2]{display:block;width:24px;height:2px;margin:0 auto;background:var(--color-text-on-navy);transition:.2s ease}@media(max-width:720px){.nav-toggle[data-astro-cid-3ef6ksr2]{display:flex}.internal-links[data-astro-cid-3ef6ksr2]{display:none;position:absolute;left:0;right:0;top:100%;flex-direction:column;align-items:stretch;gap:0;background:var(--color-navy-bg);border-bottom:1px solid var(--color-border-navy);box-shadow:var(--shadow-navy)}.internal-links[data-astro-cid-3ef6ksr2].open{display:flex}.internal-links[data-astro-cid-3ef6ksr2] a{padding:1rem 1.25rem;border-bottom:1px solid var(--color-border-navy)}.internal-links[data-astro-cid-3ef6ksr2] a.active{border-bottom-color:var(--color-border-navy)}}