:root{--color-bg: #ffffff;--color-surface: #ffffff;--color-text: #1a1a1a;--color-text-muted: #5c6670;--color-border: #e4e8ec;--color-accent: #1565a8;--color-accent-hover: #0f4d80;--color-accent-light: #e8f2fa;--color-link: #1565a8;--color-link-hover: #0f4d80;--header-bg: #ffffff;--header-text: #1a1a1a;--header-text-muted: #5c6670;--header-text-hover: #1565a8;--header-border: #e4e8ec;--font-sans: "Noto Sans JP", "Hiragino Kaku Gothic ProN", "Hiragino Sans", sans-serif;--font-mono: ui-monospace, "SF Mono", monospace;--max-width: 720px;--max-width-article: 680px;--max-width-wide: 1080px;--sidebar-width: 280px;--space-xs: .25rem;--space-sm: .5rem;--space-md: 1rem;--space-lg: 1.5rem;--space-xl: 2.5rem;--space-2xl: 4rem;--radius: 4px;--shadow-sm: 0 1px 3px rgba(0, 0, 0, .06);--header-height: 7rem;--header-bar-height: 4rem;--header-height-mobile: 11rem;--text-xs: .8125rem;--text-sm: .875rem;--text-base: 1rem;--text-lg: 1.125rem;--text-xl: 1.375rem;--text-2xl: 1.75rem;--text-3xl: 2rem;--text-4xl: 2.5rem;--letter-spacing-heading: .02em}*,*:before,*:after{box-sizing:border-box}html{font-size:16px;-webkit-text-size-adjust:100%}body{margin:0;font-family:var(--font-sans);font-size:1rem;line-height:1.75;color:var(--color-text);background:var(--color-bg);-webkit-font-smoothing:antialiased}img{max-width:100%;height:auto}picture{display:block;margin:var(--space-lg) 0}.prose h3+p:has(picture),.prose h3+p:has(picture)+p:has(picture){display:inline-block;width:calc(50% - var(--space-sm));vertical-align:top;margin:0 var(--space-sm) var(--space-md) 0}.prose h3+p:has(picture)+p:has(picture){margin-right:0}.prose h3+p:has(picture) picture,.prose h3+p:has(picture)+p:has(picture) picture{margin:0}@media (max-width: 480px){.prose h3+p:has(picture),.prose h3+p:has(picture)+p:has(picture){display:block;width:100%;margin-right:0}}a{color:var(--color-accent);text-decoration:none}a:hover{color:var(--color-accent)}h1,h2,h3,h4{line-height:1.35;font-weight:700;color:var(--color-text);font-feature-settings:"palt" 1;letter-spacing:var(--letter-spacing-heading)}h1{font-size:var(--text-3xl);margin:0 0 var(--space-lg)}h2{font-size:var(--text-2xl);margin:var(--space-xl) 0 var(--space-md)}h3{font-size:var(--text-xl);margin:var(--space-xl) 0 var(--space-sm)}h4{font-size:var(--text-lg);margin:var(--space-md) 0 var(--space-sm)}p{margin:0 0 var(--space-md)}ul,ol{margin:0 0 var(--space-md);padding-left:1.5rem}li{margin-bottom:var(--space-xs)}.container{width:100%;max-width:var(--max-width-wide);margin:0 auto;padding:0 var(--space-lg)}.container--narrow{max-width:var(--max-width)}.prose{font-size:1rem;line-height:1.85}.prose p{margin-bottom:var(--space-lg)}.prose p:last-child{margin-bottom:0}.prose>*:first-child{margin-top:0}.prose a{color:var(--color-link);font-weight:700}.prose a:hover{color:var(--color-link);text-decoration:none}.prose h2,.prose h3{scroll-margin-top:calc(var(--header-height) + var(--space-md))}.prose hr:has(+h2){display:none}.prose hr{border:none;border-top:1px solid var(--color-border);margin:var(--space-xl) 0}.prose table{width:100%;border-collapse:collapse;margin:var(--space-lg) 0;font-size:.9375rem;line-height:1.6}.prose th,.prose td{border:1px solid var(--color-border);padding:.625rem .875rem;text-align:left;vertical-align:top}.prose th{background:#fff;font-weight:600;color:var(--color-text)}.prose tr:nth-child(2n) td{background:#fff}.prose blockquote{margin:var(--space-lg) 0;padding:var(--space-md) var(--space-lg);border-left:3px solid var(--color-accent);background:#fff;color:var(--color-text-muted);font-size:.9375rem}.prose em{font-style:italic;color:var(--color-text-muted)}.prose strong,.prose b{font-weight:700;color:var(--color-text)}.prose p strong,.prose li strong,.prose td strong,.prose th strong,.prose blockquote strong{font-weight:700}.prose ruby{ruby-position:over;ruby-align:center}.prose rt{font-size:.55em;font-weight:400;color:var(--color-text-muted);letter-spacing:0}.prose strong ruby rt{font-weight:400}.tag{display:inline-block;padding:.125rem .5rem;font-size:.75rem;color:var(--color-accent);background:#fff;border:1px solid var(--color-border);border-radius:var(--radius);text-decoration:none}.tag:hover{border-color:var(--color-border);text-decoration:none}.category-label,.category-badge{display:inline-block;font-size:.75rem;font-weight:600;letter-spacing:.03em;color:#fff;background:var(--color-accent-hover);padding:.125rem .5rem;border-radius:var(--radius);white-space:nowrap;text-transform:none}.section-heading{margin-bottom:var(--space-xl)}.section-heading__title{font-size:var(--text-xl);font-weight:700;margin:0;color:var(--color-text);line-height:1.35}.section-heading__title a,.section-heading__title a:hover{color:var(--color-text);text-decoration:none}.section-header{margin-bottom:var(--space-xl)}.section-header__title{font-size:var(--text-4xl);font-weight:700;margin:0;color:var(--color-text);line-height:1.35}.section-header__title a,.section-header__title a:hover{color:var(--color-text);text-decoration:none}.page-title{font-size:var(--text-3xl);font-weight:700;margin:0 0 var(--space-xl);line-height:1.35}.page-body{padding-top:var(--space-sm)}.article-list{display:grid;grid-template-columns:1fr;gap:0}@media (min-width: 768px){.article-list{grid-template-columns:repeat(2,minmax(0,1fr));column-gap:var(--space-xl)}}.article-list__empty{color:var(--color-text-muted);padding:var(--space-xl) 0;text-align:center}.btn{display:inline-block;font-family:var(--font-sans);font-size:.875rem;font-weight:600;line-height:1.5;padding:.75rem 1.5rem;border-radius:var(--radius);border:none;cursor:pointer;text-decoration:none}.btn:hover{text-decoration:none}.btn--primary,.btn--primary:hover{background:var(--color-accent);color:#fff}.btn--secondary{background:#fff;color:var(--color-text);border:1px solid var(--color-border)}.btn--secondary:hover{border-color:var(--color-border);color:var(--color-text)}.btn--dark{background:var(--color-text);color:#fff;border-radius:9999px}.btn--dark:hover{background:var(--color-text);color:#fff}body{display:flex;flex-direction:column;min-height:100vh}.header[data-astro-cid-3ef6ksr2]{background:var(--color-bg);border-bottom:1px solid var(--color-border);position:sticky;top:0;z-index:100}.header__top[data-astro-cid-3ef6ksr2]{display:flex;align-items:center;justify-content:space-between;gap:var(--space-lg);min-height:var(--header-bar-height);padding-top:var(--space-md);padding-bottom:var(--space-md)}.header__logo[data-astro-cid-3ef6ksr2]{flex-shrink:0;display:inline-flex;align-items:center;gap:.625rem;text-decoration:none;color:var(--color-text);font-family:var(--font-sans);font-weight:900;font-size:2.5rem;line-height:1;letter-spacing:.08em}.header__logo-icon[data-astro-cid-3ef6ksr2]{flex-shrink:0;display:block;width:2.25rem;height:2.25rem;translate:0 .08em}.header__logo-text[data-astro-cid-3ef6ksr2]{line-height:1}.header__logo[data-astro-cid-3ef6ksr2]:hover{color:var(--color-text);opacity:1;text-decoration:none}.header__search[data-astro-cid-3ef6ksr2]{flex:1;max-width:18rem;margin-left:auto}.header__search-field[data-astro-cid-3ef6ksr2]{display:flex;align-items:center;width:100%;background:var(--color-bg);border:1px solid #9aa3ad;border-radius:9999px;overflow:hidden}.header__search-field[data-astro-cid-3ef6ksr2]:focus-within{outline:2px solid var(--color-accent);outline-offset:1px}.header__search-input[data-astro-cid-3ef6ksr2]{flex:1;min-width:0;box-sizing:border-box;font-family:var(--font-sans);font-size:.9375rem;line-height:1.5;color:var(--color-text);background:transparent;border:none;border-radius:0;padding:.625rem .5rem .625rem 1rem;appearance:none}.header__search-input[data-astro-cid-3ef6ksr2]:focus{outline:none}.header__search-input[data-astro-cid-3ef6ksr2]::placeholder{color:var(--color-text-muted)}.header__search-btn[data-astro-cid-3ef6ksr2]{flex-shrink:0;display:inline-flex;align-items:center;justify-content:center;border:none;background:transparent;color:var(--color-text);padding:.625rem .875rem .625rem .5rem;cursor:pointer}.header__search-btn[data-astro-cid-3ef6ksr2]:hover{color:var(--color-text)}.header__search-icon[data-astro-cid-3ef6ksr2]{display:block}.header__nav-wrap[data-astro-cid-3ef6ksr2]{padding-top:var(--space-sm);padding-bottom:var(--space-sm)}.header__nav[data-astro-cid-3ef6ksr2]{min-width:0}.header__nav-list[data-astro-cid-3ef6ksr2]{display:flex;flex-wrap:wrap;gap:var(--space-xs) var(--space-lg);list-style:none;margin:0;padding:0}.header__nav-list[data-astro-cid-3ef6ksr2] li[data-astro-cid-3ef6ksr2]{margin:0}.header__nav-link[data-astro-cid-3ef6ksr2]{display:inline-block;font-size:1rem;font-weight:900;color:var(--color-text);text-decoration:none;padding:.25rem 0}.header__nav-link[data-astro-cid-3ef6ksr2]:hover{color:var(--color-text);text-decoration:none}@media (max-width: 767px){.header__top[data-astro-cid-3ef6ksr2]{flex-direction:column;align-items:stretch;gap:var(--space-md)}.header__logo[data-astro-cid-3ef6ksr2]{justify-content:center;font-size:2.125rem}.header__logo-icon[data-astro-cid-3ef6ksr2]{width:2rem;height:2rem}.header__search[data-astro-cid-3ef6ksr2]{max-width:none;margin-left:0}.header__nav-list[data-astro-cid-3ef6ksr2]{justify-content:center;gap:var(--space-xs) var(--space-md)}.header__nav-link[data-astro-cid-3ef6ksr2]{font-size:.9375rem}}.footer[data-astro-cid-sz7xmlte]{background:#f5f8fa;border-top:1px solid var(--color-border);padding:var(--space-2xl) 0 var(--space-xl);margin-top:auto}.footer__inner[data-astro-cid-sz7xmlte]{text-align:center}.footer__brand[data-astro-cid-sz7xmlte]{font-family:var(--font-sans);font-weight:900;font-size:1.625rem;letter-spacing:.08em;margin:0 0 var(--space-xs);color:var(--color-text)}.footer__tagline[data-astro-cid-sz7xmlte]{font-size:.875rem;color:var(--color-text-muted);margin:0 0 var(--space-lg)}.footer__nav-list[data-astro-cid-sz7xmlte]{display:flex;flex-wrap:wrap;justify-content:center;gap:var(--space-sm) var(--space-lg);list-style:none;margin:0 0 var(--space-lg);padding:0}.footer__nav-list[data-astro-cid-sz7xmlte] li[data-astro-cid-sz7xmlte]{margin:0}.footer__nav-link[data-astro-cid-sz7xmlte]{font-size:.8125rem;font-weight:600;color:var(--color-text-muted);text-decoration:none}.footer__nav-link[data-astro-cid-sz7xmlte]:hover{color:var(--color-text-muted);text-decoration:none}.footer__copy[data-astro-cid-sz7xmlte]{font-size:.75rem;color:var(--color-text-muted);margin:0}.site-body[data-astro-cid-gjphf53z]{display:flex;flex:1;gap:var(--space-2xl);align-items:flex-start;padding-top:var(--space-2xl);padding-bottom:var(--space-2xl)}.site-body--compact-top[data-astro-cid-gjphf53z]{padding-top:var(--space-lg)}.site-content[data-astro-cid-gjphf53z]{flex:1;min-width:0}.site-body--with-sidebar[data-astro-cid-gjphf53z] .site-content[data-astro-cid-gjphf53z]{max-width:var(--max-width-article)}.site-body--with-sidebar[data-astro-cid-gjphf53z].container{padding-right:0}.site-body[data-astro-cid-gjphf53z]:not(.site-body--with-sidebar) .site-content[data-astro-cid-gjphf53z]{max-width:none}