:root{--bg:#fbfbf9;--surface:#f2f3f0;--surface-2:#e9ebe7;--border:#dcdfda;--text:#24312e;--text-muted:#5e6d68;--accent:#0e7c6b;--accent-strong:#0a5a4e;--font-body:"Noto Sans JP", "Hiragino Kaku Gothic ProN", sans-serif;--font-num:"Figtree", "Noto Sans JP", sans-serif;--ease:cubic-bezier(.32, .72, 0, 1)}*{box-sizing:border-box;margin:0}html{background:var(--bg);color-scheme:light}body{font-family:var(--font-body);color:var(--text);background:var(--bg);letter-spacing:.03em;word-break:normal;line-break:strict;flex-direction:column;min-height:100dvh;font-size:16px;line-height:1.8;display:flex}main{flex:1;width:100%;max-width:42rem;margin:0 auto;padding:3rem 1.25rem 6rem}h1,h2,h3,h4{letter-spacing:.01em;font-feature-settings:"palt";text-wrap:balance;font-weight:700;line-height:1.45}h1{font-size:1.65rem}h2{font-size:1.3rem}h3{font-size:1.05rem}a{color:var(--accent);text-underline-offset:3px;transition:color .2s var(--ease);text-decoration:underline 1px}a:hover{color:var(--accent-strong)}a:focus-visible{outline:2px solid var(--accent);outline-offset:2px;border-radius:2px}code{background:var(--surface-2);border-radius:4px;padding:.15em .4em;font-size:.88em}img{border-radius:8px;max-width:100%;height:auto}hr{border:none;border-top:1px solid var(--border);margin:3rem 0}.site-header{border-bottom:1px solid var(--border);background:var(--bg)}.site-header .inner{justify-content:space-between;align-items:center;gap:1rem;max-width:42rem;margin:0 auto;padding:.9rem 1.25rem;display:flex}.site-brand{color:var(--text);letter-spacing:.02em;font-size:1rem;font-weight:700;text-decoration:none}.site-brand:hover,.site-brand .mark{color:var(--accent)}.site-nav{gap:.25rem;display:flex}.site-nav a{color:var(--text-muted);white-space:nowrap;min-height:44px;transition:color .2s var(--ease), background .2s var(--ease);border-radius:6px;align-items:center;padding:.5rem .75rem;font-size:.9rem;text-decoration:none;display:inline-flex}.site-nav a:hover{color:var(--text);background:var(--surface)}.site-nav a[aria-current=page]{color:var(--accent)}.site-footer{border-top:1px solid var(--border);color:var(--text-muted);font-size:.8rem}.site-footer .inner{flex-wrap:wrap;justify-content:space-between;gap:.5rem 1.5rem;max-width:42rem;margin:0 auto;padding:2rem 1.25rem;display:flex}.site-footer a{color:var(--text-muted)}.site-footer a:hover{color:var(--text)}.post-list{flex-direction:column;padding:0;list-style:none;display:flex}.post-list li{border-bottom:1px solid var(--border)}.post-list a{color:var(--text);transition:background .2s var(--ease);border-radius:6px;padding:1.4rem .25rem;text-decoration:none;display:block}.post-list a:hover{background:var(--surface)}.post-list .meta{font-family:var(--font-num);color:var(--text-muted);font-variant-numeric:tabular-nums;align-items:center;gap:.9rem;margin-bottom:.35rem;font-size:.9rem;display:flex}.post-list .meta .cat{color:var(--accent)}.post-list .title{font-size:1rem;font-weight:700;line-height:1.55}.post-list .desc{color:var(--text-muted);margin-top:.4rem;font-size:.86rem;line-height:1.7}.news-box{background:var(--surface);border:1px solid var(--border);color:var(--text);transition:background .2s var(--ease), border-color .2s var(--ease);border-radius:10px;margin-top:.75rem;padding:1.2rem 1.4rem;text-decoration:none;display:block}.news-box:hover{background:var(--surface-2);border-color:var(--accent)}.news-box .meta{font-family:var(--font-num);color:var(--text-muted);font-variant-numeric:tabular-nums;align-items:center;gap:.9rem;margin-bottom:.35rem;font-size:.9rem;display:flex}.news-box .meta .cat{color:var(--accent)}.news-box .title{font-size:1rem;font-weight:700;line-height:1.55}.news-box .desc{color:var(--text-muted);margin-top:.4rem;font-size:.86rem;line-height:1.7}.hero{padding:2rem 0 3rem}.hero .label{color:var(--accent);letter-spacing:.08em;margin-bottom:.9rem;font-size:.8rem;font-weight:500}.hero h1{margin-bottom:1rem;font-size:clamp(1.5rem,5vw,1.9rem)}.hero p{color:var(--text-muted);max-width:36rem}.section-title{color:var(--text-muted);letter-spacing:.1em;margin:2.5rem 0 .5rem;font-size:.82rem;font-weight:500}.article-header{margin-bottom:2.5rem}.article-header .meta{font-family:var(--font-num);color:var(--text-muted);font-variant-numeric:tabular-nums;gap:1rem;margin-bottom:.8rem;font-size:.9rem;display:flex}.article-header .meta a{color:var(--accent)}.article-header h1{margin-bottom:.6rem}.article-header .lede{color:var(--text-muted);font-size:1rem}.article-header .lede+.lede{margin-top:.6rem}.prose>*+*{margin-top:1.5em}.prose p,.prose li,.article-header .lede{word-break:auto-phrase}.prose h2{border-top:1px solid var(--border);margin-top:2.8em;margin-bottom:.75em;padding-top:1.4em}.prose h3{margin-top:2em;margin-bottom:.5em}.prose ul,.prose ol{padding-left:1.4em}.prose li+li{margin-top:.4em}.prose blockquote{border-left:3px solid var(--accent);color:var(--text-muted);padding-left:1rem}.prose table{border-collapse:collapse;font-variant-numeric:tabular-nums;width:100%;font-size:1rem}.prose th,.prose td{border:1px solid var(--border);text-align:left;padding:.5rem .75rem}.prose th{background:var(--surface);font-weight:500}.prose .note{background:var(--surface);border:1px solid var(--border);border-radius:8px;padding:1rem 1.25rem;font-size:.9rem}.post-nav{border-top:1px solid var(--border);margin-top:4rem;padding-top:1.5rem;font-size:.9rem}.disclaimer{background:var(--surface);color:var(--text-muted);border-radius:8px;margin-top:3rem;padding:1rem 1.25rem;font-size:.8rem;line-height:1.7}@media (width<=480px){main{padding-top:2rem}.hero{padding:1.2rem 0 2rem}}@media (width<=520px){.site-header .inner{flex-wrap:wrap;row-gap:.1rem}.site-nav{width:100%;margin-left:-.75rem}}.hero-figure{margin:0 0 2.5rem}.hero-figure img{aspect-ratio:16/9;object-fit:cover;border:1px solid var(--border);border-radius:10px;width:100%;display:block}.hero-figure figcaption{font-family:var(--font-num);color:var(--text-muted);text-align:right;margin-top:.5rem;font-size:.72rem}.post-list a.has-thumb{grid-template-columns:1fr 9rem;grid-template-areas:"meta thumb""title thumb""desc thumb";align-items:start;column-gap:1.1rem;display:grid}.post-list a.has-thumb .meta{grid-area:meta}.post-list a.has-thumb .title{grid-area:title}.post-list a.has-thumb .desc{grid-area:desc}.post-list .thumb{aspect-ratio:16/9;object-fit:cover;border:1px solid var(--border);border-radius:6px;grid-area:thumb;align-self:center;width:9rem}@media (width<=560px){.post-list a.has-thumb{display:block}.post-list .thumb{border-radius:8px;width:100%;margin-bottom:.7rem}}.diagram{margin:2rem 0}.diagram svg{width:100%;height:auto;color:var(--text);font-family:var(--font-body);background:var(--surface);border:1px solid var(--border);border-radius:10px;display:block}.diagram figcaption{color:var(--text-muted);margin-top:.6rem;font-size:.82rem;line-height:1.6}.diagram .box{fill:var(--bg);stroke:var(--border);stroke-width:1.5px}.diagram .box.hi{stroke:var(--accent);stroke-width:2px}.diagram .fill-hi{fill:var(--accent)}.diagram .fill-dim{fill:#8fc4ba}.diagram .fill-mute{fill:var(--surface-2)}.diagram .t{fill:var(--text);font-size:13px}.diagram .t.s{fill:var(--text-muted);font-size:11px}.diagram .t.b{font-weight:700}.diagram .t.hi{fill:var(--accent-strong);font-weight:700}.diagram .t.mono{font-family:var(--font-num);font-variant-numeric:tabular-nums}.diagram .ln{stroke:currentColor;stroke-width:1.5px;fill:none}.diagram .ln.hi{stroke:var(--accent);stroke-width:2px}.diagram .ln.dash{stroke-dasharray:5 4}.diagram .grid{stroke:var(--border);stroke-width:1px}.next-read{border:1px solid var(--border);background:var(--surface);border-radius:10px;margin-top:3rem;padding:1.2rem 1.4rem}.next-read .label{font-family:var(--font-num);color:var(--text-muted);letter-spacing:.08em;margin-bottom:.6rem;font-size:.75rem}.next-read ul{flex-direction:column;gap:.5rem;padding:0;list-style:none;display:flex}.next-read a{padding:.4rem 0;font-weight:700;display:block}.next-read .sub{color:var(--text-muted);font-size:.8rem;font-weight:400;line-height:1.6;display:block}