:root{color-scheme:light;--page-background: #f3efe6;--surface: #fbf8f1;--text-primary: #211f1b;--text-secondary: #716b61;--accent: #b54a32;--border: #d8d0c3;--border-strong: #aaa094;--code-background: #ebe5da;--content-wide: 1060px;--content-reading: 780px;--page-gutter: clamp(1.1rem, 4vw, 2.5rem)}@media (prefers-color-scheme: dark){:root{color-scheme:dark;--page-background: #171614;--surface: #211f1c;--text-primary: #eee8de;--text-secondary: #aaa297;--accent: #d16a4d;--border: #38342f;--border-strong: #575047;--code-background: #292622}}*{box-sizing:border-box}html{scroll-behavior:smooth}body{min-width:320px;min-height:100vh;margin:0;background:var(--page-background);color:var(--text-primary);font-family:'Noto Sans JP', 'Hiragino Sans', 'Yu Gothic UI', 'Yu Gothic', Meiryo, sans-serif;font-size:1rem;line-height:1.85;text-rendering:optimizeLegibility}a{color:var(--accent);text-decoration-thickness:0.08em;text-underline-offset:0.18em;overflow-wrap:anywhere}a:hover{color:var(--text-primary)}a:focus-visible{outline:2px solid var(--accent);outline-offset:4px}::selection{background:var(--accent);color:var(--surface)}.skip-link{position:absolute;z-index:10;top:0.75rem;left:var(--page-gutter);padding:0.45rem 0.75rem;background:var(--surface);border:1px solid var(--accent);color:var(--text-primary);transform:translateY(-200%)}.skip-link:focus{transform:translateY(0)}.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0, 0, 0, 0);white-space:nowrap;border:0}.site-header{border-top:2px solid var(--accent);border-bottom:1px solid var(--border)}.site-header__inner,.site-footer__inner{width:min(100% - (var(--page-gutter) * 2), var(--content-wide));margin-inline:auto}.site-header__inner{display:flex;align-items:baseline;justify-content:space-between;gap:1.5rem;padding-block:1.15rem 1rem}.site-title{flex:0 0 auto;color:var(--text-primary);font-size:0.95rem;font-weight:700;letter-spacing:0.12em;text-decoration:none}.site-title:hover{color:var(--accent)}.site-nav{display:flex;flex-wrap:wrap;justify-content:flex-end;gap:0.35rem 1.15rem}.site-nav__link{padding-block:0.15rem;border-bottom:1px solid transparent;color:var(--text-secondary);font-size:0.9rem;text-decoration:none}.site-nav__link:hover,.site-nav__link[aria-current='page']{border-bottom-color:var(--accent);color:var(--text-primary)}.site-main{width:min(100% - (var(--page-gutter) * 2), var(--content-wide));margin-inline:auto;padding-block:clamp(2.8rem, 8vw, 6.5rem)}.document{width:min(100%, var(--content-reading));margin-inline:auto;padding:clamp(1.5rem, 5vw, 3.25rem);background:var(--surface);border:1px solid var(--border);border-top:2px solid var(--accent)}.document h1,.document h2,.document h3{color:var(--text-primary);line-height:1.35;scroll-margin-top:1.5rem}.document h1{margin:0 0 1.5rem;font-size:clamp(1.65rem, 3vw, 2.2rem);letter-spacing:0.02em}.document h2{position:relative;margin:3.5rem 0 1rem;padding-top:1rem;border-top:1px solid var(--border);font-size:clamp(1.15rem, 2.1vw, 1.4rem)}.document h2::before{position:absolute;top:-1px;left:0;width:2.5rem;height:2px;background:var(--accent);content:''}.document h3{margin:2rem 0 0.75rem;font-size:1.05rem}.document p,.document ul,.document ol,.document blockquote{margin-block:0 1.35rem}.document ul,.document ol{padding-inline-start:1.5rem}.document li+li{margin-top:0.35rem}.document h1+ul{display:grid;gap:0.15rem;margin:0 0 2.4rem;padding:0.9rem 0;border-block:1px solid var(--border);list-style:none;color:var(--text-secondary);font-size:0.92rem}.document h1+ul li{margin:0}.document code{padding:0.08em 0.35em;background:var(--code-background);border:1px solid var(--border);font-size:0.92em;overflow-wrap:anywhere}.document pre{max-width:100%;overflow-x:auto;padding:1rem;background:var(--code-background);border:1px solid var(--border)}.document pre code{padding:0;background:transparent;border:0}.document blockquote{margin-inline:0;padding-inline:1rem;border-inline-start:2px solid var(--border-strong);color:var(--text-secondary)}.document hr{margin-block:2.5rem;border:0;border-top:1px solid var(--border)}.home-content{width:min(100%, 850px);margin-inline:auto}.home-lead{padding-bottom:clamp(2.5rem, 7vw, 5rem)}.home-kicker{margin:0 0 0.75rem;color:var(--accent);font-size:0.78rem;font-weight:700;letter-spacing:0.18em}.home-lead h1{max-width:18ch;margin:0;font-size:clamp(1.9rem, 5vw, 3.4rem);font-weight:700;line-height:1.3;letter-spacing:0.02em}.home-lead__description{max-width:42rem;margin:1.5rem 0 0;color:var(--text-secondary);font-size:clamp(1rem, 1.5vw, 1.1rem)}.document-index{border-top:1px solid var(--border-strong)}.document-row{display:grid;grid-template-columns:3.2rem minmax(0, 1fr);gap:1rem;align-items:baseline;padding:1.25rem 0 1.4rem;border-bottom:1px solid var(--border);color:inherit;text-decoration:none}.document-row:hover .document-row__title{color:var(--accent)}.document-row:focus-visible{outline-offset:6px}.document-row__number{color:var(--accent);font-size:0.8rem;letter-spacing:0.08em}.document-row__title{margin:0;color:var(--text-primary);font-size:clamp(1.15rem, 2.2vw, 1.45rem);line-height:1.4}.document-row__description{margin:0.25rem 0 0;color:var(--text-secondary);font-size:0.92rem}.home-meta{display:grid;gap:0.5rem;margin-top:clamp(2.5rem, 7vw, 4.5rem);padding-top:1.25rem;border-top:1px solid var(--border-strong);color:var(--text-secondary);font-size:0.9rem}.home-meta p{margin:0}.home-meta__operator{color:var(--text-primary);font-weight:700}.site-footer{border-top:1px solid var(--border);color:var(--text-secondary);font-size:0.82rem}.site-footer__inner{display:flex;flex-wrap:wrap;justify-content:space-between;gap:0.5rem 1.5rem;padding-block:1.3rem 1.6rem}.site-footer p{margin:0}.site-footer span{color:var(--text-primary);font-weight:700;letter-spacing:0.08em}@media (max-width: 640px){.site-header__inner{display:block}.site-nav{justify-content:flex-start;margin-top:0.75rem;gap:0.35rem 1rem}.site-main{padding-block:2.5rem 4rem}.document{padding:1.35rem 1rem 1.8rem}.document h2{margin-top:2.75rem}.document-row{grid-template-columns:2.25rem minmax(0, 1fr);gap:0.7rem}.site-footer__inner{display:block}.site-footer p+p{margin-top:0.4rem}}@media (prefers-reduced-motion: reduce){html{scroll-behavior:auto}}