:root{--bg:#FBF8F1;--ink:#2C2A26;--sub:#6E685C;--border:rgba(44,42,38,.12);--accent:#BA7517;--accent-soft:#FAEEDA;--accent-soft-ink:#854F0B;--accent-faint:#E0B97A;--mute:#9A9384;--card:#FFFFFF;--sink:#F7F3EA;--maxw:760px}:root[data-theme=dark]{--bg:#221E18;--ink:#EDE7DA;--sub:#B5AD9D;--border:rgba(237,231,218,.14);--accent:#E0A24A;--accent-soft:#3A2F1E;--accent-soft-ink:#E9C589;--accent-faint:#6B5836;--mute:#9A9384;--card:#2A251D;--sink:#1E1A14}*{box-sizing:border-box;margin:0;padding:0}html{scroll-behavior:smooth}body{font-family:Noto Sans JP,system-ui,sans-serif;background:linear-gradient(var(--bg),var(--bg));color:var(--ink);line-height:1.85;font-size:16.5px;-webkit-font-smoothing:antialiased;font-feature-settings:"palt"}.mono{font-family:JetBrains Mono,monospace}#progress{position:fixed;top:0;left:0;height:3px;width:0;background:var(--accent);z-index:100;transition:width .1s linear}.topbar{position:sticky;top:0;z-index:50;background:linear-gradient(color-mix(in srgb,var(--bg) 88%,transparent),color-mix(in srgb,var(--bg) 88%,transparent));backdrop-filter:blur(8px);border-bottom:1px solid var(--border)}.topbar .inner{max-width:var(--maxw);margin:0 auto;padding:11px 22px;display:flex;align-items:center;justify-content:space-between;gap:12px}.topbar .actions{display:flex;align-items:center;gap:12px}.brand{font-weight:600;font-size:15px;letter-spacing:.02em;display:flex;align-items:center;gap:8px}.brand .sig{font-family:JetBrains Mono,monospace;color:var(--accent)}.topbar a.toc{font-size:13px;color:var(--sub);text-decoration:none}.topbar a.toc:hover{color:var(--accent)}.theme-toggle{appearance:none;-webkit-appearance:none;background:transparent;border:1px solid var(--border);color:var(--sub);border-radius:8px;width:32px;height:28px;padding:0;line-height:1;font-size:14px;cursor:pointer;display:inline-grid;place-items:center;transition:border-color .2s,color .2s}.theme-toggle:hover{border-color:var(--accent);color:var(--accent)}.theme-toggle:focus-visible{outline:2px solid var(--accent);outline-offset:2px}main{max-width:var(--maxw);margin:0 auto;padding:0 22px}section{padding:46px 0;border-bottom:1px solid var(--border)}section:last-of-type{border-bottom:none}.eyebrow{font-family:JetBrains Mono,monospace;font-size:12px;letter-spacing:.18em;text-transform:uppercase;color:var(--accent);margin-bottom:14px;display:flex;align-items:center;gap:10px}.eyebrow .num{display:inline-grid;place-items:center;min-width:24px;height:24px;border:1px solid var(--accent);border-radius:50%;font-size:11px;color:var(--accent)}h1{font-size:clamp(30px,7vw,46px);font-weight:700;line-height:1.28;letter-spacing:.01em;margin-bottom:20px}h2{font-size:clamp(22px,4.6vw,29px);font-weight:600;line-height:1.4;margin-bottom:18px;letter-spacing:.01em}h3{font-size:18.5px;font-weight:600;margin:26px 0 10px}p{margin-bottom:15px}strong{font-weight:600;color:var(--ink)}.lead{font-size:18px;color:var(--ink)}.sub{color:var(--sub)}em{font-style:normal;color:var(--accent-soft-ink);font-weight:500}.hero{padding:54px 0 40px}.hero .kicker{font-family:JetBrains Mono,monospace;font-size:12.5px;letter-spacing:.14em;color:var(--accent);margin-bottom:20px}.hero h1 .glow{color:var(--accent)}.hero p{font-size:18px;color:var(--sub);max-width:62ch}.pipe-demo{font-family:JetBrains Mono,monospace;font-size:14px;background:linear-gradient(var(--sink),var(--sink));border:1px solid var(--border);border-radius:10px;padding:14px 16px;margin:24px 0 6px;color:var(--sub);overflow-x:auto;white-space:nowrap}.pipe-demo .tok{color:var(--ink)}.pipe-demo .bar{color:var(--accent);font-weight:600;padding:0 6px}.result{background:linear-gradient(var(--accent-soft),var(--accent-soft));border:1px solid var(--accent-faint);border-radius:14px;padding:24px 24px 20px}.result .tag{font-family:JetBrains Mono,monospace;font-size:11.5px;letter-spacing:.1em;text-transform:uppercase;color:var(--accent-soft-ink);margin-bottom:10px}.result .big{font-size:clamp(24px,5.5vw,32px);font-weight:700;color:var(--accent-soft-ink);line-height:1.35;margin-bottom:14px}.three{list-style:none;display:grid;gap:9px;margin-top:8px}.three li{display:flex;gap:11px;align-items:baseline;color:var(--ink);font-size:15.5px}.three li .k{font-family:JetBrains Mono,monospace;color:var(--accent-soft-ink);font-size:13px;flex:none;width:74px;font-weight:500}.chips{display:flex;flex-wrap:wrap;gap:10px;margin-top:6px}.chip{font-size:13px;color:var(--sub);background:linear-gradient(var(--sink),var(--sink));border:1px solid var(--border);border-radius:999px;padding:6px 13px}.chip b{color:var(--accent-soft-ink);font-weight:600}.checks{list-style:none;display:grid;gap:11px;margin:16px 0 6px}.checks li{display:flex;gap:12px;align-items:flex-start;background:linear-gradient(var(--card),var(--card));border:1px solid var(--border);border-radius:11px;padding:13px 15px}.checks li .mk{color:var(--accent);font-weight:600;flex:none;font-family:JetBrains Mono,monospace}.vs{display:grid;grid-template-columns:1fr 1fr;gap:14px;margin:20px 0 6px}.vs .col{border:1px solid var(--border);border-radius:13px;padding:18px;background:linear-gradient(var(--card),var(--card))}.vs .col.good{border-color:var(--accent-faint);background:linear-gradient(var(--accent-soft),var(--accent-soft))}.vs .col h4{font-size:15px;font-weight:600;margin-bottom:9px;display:flex;align-items:center;gap:8px}.vs .col.good h4{color:var(--accent-soft-ink)}.vs .col p{font-size:14px;color:var(--sub);margin:0}.vs .label{font-family:JetBrains Mono,monospace;font-size:11px;letter-spacing:.08em;color:var(--mute);text-transform:uppercase}.analogy{border-left:3px solid var(--accent);background:linear-gradient(var(--sink),var(--sink));border-radius:0 12px 12px 0;padding:16px 18px;margin:20px 0}.analogy .h{font-size:13px;font-family:JetBrains Mono,monospace;letter-spacing:.05em;color:var(--accent);margin-bottom:7px;display:flex;align-items:center;gap:8px}.analogy p{margin:0;font-size:15px;color:var(--ink)}.analogy p+p{margin-top:8px}.insight{background:linear-gradient(var(--accent),var(--accent));color:#fff8ec;border-radius:14px;padding:22px 24px;margin:22px 0}:root[data-theme=dark] .insight{color:#231d12}.insight .h{font-family:JetBrains Mono,monospace;font-size:12px;letter-spacing:.12em;text-transform:uppercase;opacity:.8;margin-bottom:9px}.insight .q{font-size:clamp(19px,4vw,23px);font-weight:600;line-height:1.5}.chain{display:flex;flex-wrap:wrap;gap:8px;margin:18px 0;align-items:center}.chain .node{font-size:13.5px;background:linear-gradient(var(--card),var(--card));border:1px solid var(--border);border-radius:9px;padding:8px 12px}.chain .arr{color:var(--accent);font-weight:600}.shadow{background:linear-gradient(var(--sink),var(--sink));border:1px solid var(--border);border-radius:13px;padding:20px 22px;margin:16px 0}.shadow h3{margin-top:0;color:var(--ink);display:flex;gap:10px;align-items:baseline}.shadow h3 .n{font-family:JetBrains Mono,monospace;color:var(--accent);font-size:14px;flex:none}.shadow p{font-size:15px;color:var(--sub);margin-bottom:0}.note{font-size:14px;color:var(--sub);background:linear-gradient(var(--sink),var(--sink));border-radius:10px;padding:13px 16px;border:1px solid var(--border)}.term{border-bottom:1px dashed var(--accent-faint);cursor:help}.closing{padding:50px 0 30px}.closing .big{font-size:clamp(22px,4.6vw,28px);font-weight:600;line-height:1.5;margin-bottom:18px}.whisper{font-size:14px;color:var(--mute);font-style:italic;border-top:1px solid var(--border);padding-top:18px;margin-top:24px}footer{max-width:var(--maxw);margin:0 auto;padding:30px 22px 60px;color:var(--mute);font-size:13px;line-height:1.8}footer a{color:var(--sub)}@media(max-width:560px){body{font-size:16px}section{padding:38px 0}.vs{grid-template-columns:1fr}.three li .k{width:64px}}@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}#progress{transition:none}}