:root{--color-brand: #1d4ed8;--color-brand-mid: #2563eb;--color-brand-light: #3b82f6;--color-brand-dark: #1e3a8a;--color-sun: #fbbf24;--color-sun-dark: #f59e0b;--color-sun-text: #78350f;--color-accent: #2563eb;--color-accent-dark: #1d4ed8;--color-bg: #f8f9fa;--color-surface: #ffffff;--color-text: #1e293b;--color-text-muted: #5f6b7a;--color-border: #e2e8f0;--radius-sm: 8px;--radius-md: 12px;--radius-lg: 16px;--shadow-card: 0 1px 3px rgba(29, 78, 216, .06), 0 4px 12px rgba(29, 78, 216, .05);--shadow-card-hover: 0 6px 20px rgba(29, 78, 216, .12), 0 12px 32px rgba(29, 78, 216, .09);--space-section: 3.5rem;--content-width: 720px;--wide-width: 1040px;--accent: var(--color-accent);--accent-dark: var(--color-accent-dark);--black: 30, 41, 59;--gray: 95, 107, 122;--gray-light: 226, 232, 240;--gray-dark: 30, 41, 59;--gray-gradient: var(--color-brand-dark), #1a3172;--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:linear-gradient(135deg,var(--color-brand-dark) 0%,#1a3172 100%);color:#ffffffb3;text-align:center;font-size:.92rem}.footer-links[data-astro-cid-sz7xmlte]{display:flex;justify-content:center;flex-wrap:wrap;gap:1.5em;margin-bottom:1.2em}.footer-links[data-astro-cid-sz7xmlte] a[data-astro-cid-sz7xmlte]{color:#ffffffbf;text-decoration:none;font-size:.9em;transition:color .15s ease}.footer-links[data-astro-cid-sz7xmlte] a[data-astro-cid-sz7xmlte]:hover{color:var(--color-sun);text-decoration:none}.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:#ffffffb3}.social-links[data-astro-cid-sz7xmlte] a[data-astro-cid-sz7xmlte]:hover{color:var(--color-sun)}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-brand);border-bottom:none;position:sticky;top:0;z-index:50;box-shadow:0 2px 8px #1d4ed840}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:800;font-size:1.18rem;color:#fff;text-decoration:none;padding:.9rem 0;white-space:nowrap;letter-spacing:.01em}.brand[data-astro-cid-3ef6ksr2]:hover{color:var(--color-sun)}.internal-links[data-astro-cid-3ef6ksr2]{display:flex;align-items:center;gap:.1rem}.internal-links[data-astro-cid-3ef6ksr2] a{padding:.85rem;color:#ffffffe0;border-bottom:3px solid transparent;text-decoration:none;font-size:.95rem;font-weight:500;transition:color .15s ease,border-color .15s ease}.internal-links[data-astro-cid-3ef6ksr2] a:hover{color:#fff;border-bottom-color:#fbbf2499}.internal-links[data-astro-cid-3ef6ksr2] a.active{border-bottom-color:var(--color-sun);color:#fff;font-weight:700}.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:#fff;border-radius:2px;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-brand-dark);border-bottom:none;box-shadow:0 4px 16px #1d4ed84d}.internal-links[data-astro-cid-3ef6ksr2].open{display:flex}.internal-links[data-astro-cid-3ef6ksr2] a{padding:1rem 1.25rem;border-bottom:1px solid rgba(255,255,255,.12);color:#ffffffe6}.internal-links[data-astro-cid-3ef6ksr2] a:hover{background:#ffffff14;color:#fff;border-bottom-color:#ffffff1f}.internal-links[data-astro-cid-3ef6ksr2] a.active{border-bottom-color:#ffffff1f;color:var(--color-sun)}}