:root{--color-bg:#fafaf9;--color-surface:#fff;--color-text:#1c1917;--color-text-muted:#57534e;--color-border:#e7e5e4;--color-accent:#4f46e5;--color-accent-hover:#4338ca;--color-accent-subtle:#eef2ff;--color-on-accent:#fff;--color-code-bg:#f5f5f4;--shadow-card:0 1px 3px #0000000f, 0 1px 2px #0000000a;--shadow-card-hover:0 4px 12px #0000001a;--radius:12px;--content-width:72rem;--prose-width:54rem}@media (prefers-color-scheme:dark){:root{--color-bg:#100f0f;--color-surface:#1c1917;--color-text:#f5f5f4;--color-text-muted:#a8a29e;--color-border:#292524;--color-accent:#818cf8;--color-accent-hover:#a5b4fc;--color-accent-subtle:#27263b;--color-on-accent:#1c1917;--color-code-bg:#292524;--shadow-card:0 1px 3px #0006;--shadow-card-hover:0 4px 12px #00000080}}*,:before,:after{box-sizing:border-box}html{color-scheme:light dark}body{color:var(--color-text);background:var(--color-bg);-webkit-font-smoothing:antialiased;margin:0;font-family:system-ui,-apple-system,Segoe UI,Hiragino Kaku Gothic ProN,Hiragino Sans,Noto Sans JP,Meiryo,sans-serif;font-size:1rem;line-height:1.8}img,video{max-width:100%;height:auto}a{color:var(--color-accent)}a:hover{color:var(--color-accent-hover)}code,pre{font-family:ui-monospace,Cascadia Code,Source Han Code JP,Consolas,monospace}.container{max-width:var(--content-width);margin-inline:auto;padding-inline:1.25rem}.site-header{border-bottom:1px solid var(--color-border);background:var(--color-surface)}.site-header .container{justify-content:space-between;align-items:center;gap:1rem;height:4rem;display:flex}.site-title{color:var(--color-text);font-size:1.125rem;font-weight:700;text-decoration:none}.site-title:hover{color:var(--color-accent)}.site-nav{align-items:center;gap:1.25rem;display:flex}.site-nav a{color:var(--color-text-muted);font-size:.9375rem;text-decoration:none}.site-nav a:hover{color:var(--color-accent)}.site-footer{border-top:1px solid var(--color-border);color:var(--color-text-muted);margin-top:4rem;padding-block:2rem;font-size:.875rem}.site-footer .container{flex-wrap:wrap;justify-content:space-between;gap:.5rem;display:flex}.site-footer a{color:inherit}.page-header{max-width:var(--prose-width);border-bottom:1px solid var(--color-border);margin-inline:auto;padding-block:3rem 1.5rem}.page-header h1{letter-spacing:.01em;margin:0 0 .75rem;font-size:clamp(1.75rem,4vw,2.5rem);line-height:1.3}.page-header .lead{color:var(--color-text-muted);margin:0;font-size:1.0625rem}.page-meta{color:var(--color-text-muted);margin-top:1rem;font-size:.875rem}.page-links{flex-wrap:wrap;gap:.75rem;margin-top:1.25rem;display:flex}.subpages{max-width:var(--prose-width);margin-inline:auto;border-top:1px solid var(--color-border);margin-top:3rem;padding-top:2rem}.subpages h2{margin:0 0 1rem;font-size:1.375rem}.card-grid{grid-template-columns:repeat(auto-fill,minmax(16rem,1fr));gap:1rem;margin:0;padding:0;list-style:none;display:grid}.card{background:var(--color-surface);border:1px solid var(--color-border);border-radius:var(--radius);box-shadow:var(--shadow-card);flex-direction:column;gap:.5rem;padding:1.25rem;transition:box-shadow .15s,transform .15s;display:flex;position:relative}.card:hover{box-shadow:var(--shadow-card-hover);transform:translateY(-2px)}.card h3{margin:0;font-size:1.0625rem;line-height:1.4}.card h3 a{color:var(--color-text);text-decoration:none}.card h3 a:after{content:"";position:absolute;inset:0}.card h3 a:hover{color:var(--color-accent)}.card .description{color:var(--color-text-muted);margin:0;font-size:.9375rem}.button{border:1px solid #0000;border-radius:8px;padding:.5rem 1.125rem;font-size:.9375rem;font-weight:600;text-decoration:none;display:inline-block}.button.primary{background:var(--color-accent);color:var(--color-on-accent)}.button.primary:hover{background:var(--color-accent-hover);color:var(--color-on-accent)}.button.secondary{border-color:var(--color-border);color:var(--color-text);background:var(--color-surface)}.button.secondary:hover{border-color:var(--color-accent);color:var(--color-accent)}.back-link{margin-top:2.5rem;font-size:.9375rem;text-decoration:none;display:inline-block}.prose{max-width:var(--prose-width);margin-inline:auto;padding-block:1.5rem}.prose h2{border-bottom:1px solid var(--color-border);margin:2.5rem 0 1rem;padding-bottom:.375rem;font-size:1.5rem;line-height:1.4}.prose h3{margin:2rem 0 .75rem;font-size:1.25rem;line-height:1.4}.prose p{margin:1rem 0}.prose ul,.prose ol{padding-left:1.5rem}.prose li{margin:.25rem 0}.prose blockquote{border-left:4px solid var(--color-accent);background:var(--color-accent-subtle);color:var(--color-text-muted);border-radius:0 8px 8px 0;margin:1.25rem 0;padding:.25rem 1.25rem}.prose code{background:var(--color-code-bg);border-radius:6px;padding:.125rem .375rem;font-size:.875em}.prose pre{border-radius:10px;padding:1rem 1.25rem;line-height:1.6;overflow-x:auto}.prose pre code{background:0 0;padding:0;font-size:.875rem}.prose table{border-collapse:collapse;width:100%;margin:1.25rem 0;font-size:.9375rem}.prose th,.prose td{border:1px solid var(--color-border);text-align:left;padding:.5rem .75rem}.prose th{background:var(--color-code-bg)}.prose img,.prose video{border-radius:10px}.prose hr{border:none;border-top:1px solid var(--color-border);margin:2.5rem 0}