:root{--color-ink:#16211b;--color-muted:#53645a;--color-soft:#f4f7f2;--color-surface:#ffffff;--color-line:#dfe8df;--color-green:#1f6f43;--color-green-deep:#164d30;--color-green-soft:#e7f1e6;--color-focus:#6bbf59;--font-sans:ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;--font-sans-ja:ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Hiragino Sans", "Hiragino Kaku Gothic ProN", "Yu Gothic", "Noto Sans JP", sans-serif;--font-serif:ui-serif, Georgia, Cambria, "Times New Roman", Times, serif;--space-1:0.25rem;--space-2:0.5rem;--space-3:0.75rem;--space-4:1rem;--space-5:1.5rem;--space-6:2rem;--space-7:3rem;--space-8:4.5rem;--radius-sm:0.375rem;--radius-md:0.5rem;--max-page:72rem;--max-copy:46rem}*,*::before,*::after{box-sizing:border-box}html{color:var(--color-ink);background:var(--color-soft);font-family:var(--font-sans);line-height:1.5;-webkit-text-size-adjust:100%;text-size-adjust:100%}body{margin:0;overflow-x:clip}:lang(ja){font-family:var(--font-sans-ja);line-break:strict}h1,h2,h3,p,ul{margin:0}ul{padding:0}a{color:var(--color-green-deep);text-decoration-thickness:.08em;text-underline-offset:.18em}a:hover{color:var(--color-green)}a:focus-visible{outline:3px solid var(--color-focus);outline-offset:3px}img{display:block;max-width:100%}.site{min-height:100vh;background:radial-gradient(circle at top left,rgb(231 241 230/.85),transparent 24rem),var(--color-soft)}.site-header{display:flex;align-items:center;justify-content:space-between;gap:var(--space-5);width:100%;max-width:calc(var(--max-page) + 2rem);margin:0 auto;padding:var(--space-4)}.site-brand{display:inline-flex;align-items:center;gap:var(--space-3);color:var(--color-ink);font-weight:700;letter-spacing:0;text-decoration:none}.site-brand-mark{width:2.25rem;height:2.25rem}.site-nav ul,.language-nav ul{display:flex;flex-wrap:wrap;align-items:center;justify-content:flex-end;gap:var(--space-2)var(--space-4);margin:0;padding:0;list-style:none}.site-nav a,.language-nav a{color:var(--color-muted);font-size:.9375rem;font-weight:600;text-decoration:none}.site-nav a:hover,.language-nav a:hover{color:var(--color-green-deep)}.language-nav{margin-left:auto;padding-left:var(--space-4);border-left:1px solid var(--color-line)}.language-nav a[aria-current=true]{color:var(--color-green-deep)}.site-main{width:100%;max-width:calc(var(--max-page) + 2rem);margin:0 auto;padding:var(--space-6)var(--space-4)var(--space-8)}.page-shell{width:100%;max-width:var(--max-copy)}.home-shell{width:100%;max-width:var(--max-page)}.page-shell>h1,.home-shell>h1{margin:0 0 var(--space-4);color:var(--color-green-deep);font-size:clamp(1.6rem,3vw,2.25rem);line-height:1.14;letter-spacing:0}.home-prose{width:100%;min-width:0}.home-prose>p:first-child{max-width:54rem;margin-bottom:var(--space-7);color:var(--color-ink);font-size:clamp(1.2rem,2.4vw,1.65rem);line-height:1.42}.home-prose>.outline-2{margin-top:var(--space-7);padding-top:var(--space-4);border-top:1px solid var(--color-line)}.home-prose>.outline-2:first-of-type .outline-text-2{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:var(--space-6)}.prose{color:var(--color-muted);font-size:1.0625rem;overflow-wrap:break-word}:lang(ja) .prose{line-height:1.75}.prose>*,.prose .outline-2,.prose .outline-3{max-width:100%;min-width:0}.prose h2,.prose h3{color:var(--color-ink);line-height:1.18}.prose h2{margin:var(--space-6)0 var(--space-3);font-size:clamp(1.2rem,2vw,1.45rem)}.prose h3{margin:var(--space-5)0 var(--space-2);font-size:1.0625rem}.prose p,.prose ul{margin:0 0 var(--space-4)}.prose ul{padding-left:1.2rem}.prose li+li{margin-top:var(--space-2)}.prose code{color:var(--color-green-deep);font-size:.95em}.cta-row{margin:var(--space-5)0 var(--space-4)}.cta-button{display:inline-block;padding:var(--space-3)var(--space-5);border-radius:var(--radius-md);background:var(--color-green-deep);color:var(--color-surface);font-weight:600;text-decoration:none}.cta-button:hover{background:var(--color-green);color:var(--color-surface)}.site-footer{display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:var(--space-3)var(--space-5);width:100%;max-width:calc(var(--max-page) + 2rem);margin:0 auto;padding:var(--space-5)var(--space-4)var(--space-6);border-top:1px solid var(--color-line);color:var(--color-muted);font-size:.9375rem}.site-footer p{margin:0}.site-footer-links{display:flex;flex-wrap:wrap;gap:var(--space-2)var(--space-4);margin:0;padding:0;list-style:none}.site-footer-links a{color:var(--color-muted);text-decoration:none}.site-footer-links a:hover{color:var(--color-green-deep)}@media(max-width:760px){.site-header,.site-main,.site-footer{padding-right:var(--space-6)}.site-header{align-items:flex-start;flex-direction:column;gap:var(--space-4)}.site-nav ul,.language-nav ul{justify-content:flex-start}.language-nav{margin-left:0;padding-left:0;border-left:0}.site-main{padding-top:var(--space-5)}.home-prose{display:block}.home-prose>p:first-child{margin-bottom:var(--space-6);font-size:clamp(1.1rem,4.5vw,1.3rem);line-height:1.45}.home-prose>.outline-2{margin-top:var(--space-6);padding-top:var(--space-4)}.home-prose>.outline-2:first-of-type .outline-text-2{display:block}.page-shell>h1,.home-shell>h1{margin-bottom:var(--space-3);font-size:clamp(1.45rem,6vw,1.75rem);line-height:1.16}.prose{font-size:.9375rem}.prose h2{margin-top:var(--space-5);font-size:clamp(1.15rem,5vw,1.35rem)}}