@layer base,components;@layer base{:root{color-scheme:light;--paper: #f4f0e6;--well: #eae5d9;--ink: #211f19;--muted: #656052;--line: #c9c1b0;--accent: #ae321f;--serif: "Newsreader Variable", Georgia, serif;--mono: "IBM Plex Mono", monospace;--body: Arial, "Hiragino Kaku Gothic ProN", "Yu Gothic", Meiryo, sans-serif;font-family:var(--body);color:var(--ink);background:var(--paper)}@media(prefers-color-scheme:dark){:root:not([data-theme=light]){color-scheme:dark;--paper: #171712;--well: #24241d;--ink: #eee8db;--muted: #b9b1a1;--line: #545246;--accent: #f18b70}}:root[data-theme=dark]{color-scheme:dark;--paper: #171712;--well: #24241d;--ink: #eee8db;--muted: #b9b1a1;--line: #545246;--accent: #f18b70}*{box-sizing:border-box}body{margin:0}a{color:inherit;text-underline-offset:.25em}a:hover{color:var(--accent)}button,input{font:inherit}button,a,input{-webkit-tap-highlight-color:transparent}button{color:inherit;background:transparent;border:1px solid var(--line);cursor:pointer;min-height:44px;padding:.55rem .9rem}button:hover{border-color:var(--ink)}button:disabled{opacity:.5}a:focus-visible,button:focus-visible,input:focus-visible,summary:focus-visible{outline:3px solid var(--accent);outline-offset:4px}input{accent-color:var(--accent)}p{line-height:1.8}h1,h2,h3,p,figure{margin-top:0}h1,h2,h3{font-weight:500}h1,h2{font-family:var(--serif);text-wrap:balance}h1{font-size:clamp(2.7rem,5.5vw,5.5rem);line-height:1.05;letter-spacing:-.04em}h2{font-size:2.2rem;line-height:1.2;letter-spacing:-.025em}h3{font-size:1.1rem;line-height:1.6}:lang(ja) h1,:lang(ja) h2{font-family:Yu Mincho,Hiragino Mincho ProN,serif;font-feature-settings:"palt";letter-spacing:.025em;line-height:1.5;line-break:strict;overflow-wrap:anywhere}:lang(ja) h1{font-size:clamp(2rem,4vw,3.75rem)}:lang(ja) h2{font-size:1.8rem}::selection{background:var(--accent);color:var(--paper)}}@layer components{.masthead,.footer,main{max-width:1248px;margin-inline:auto;padding-inline:40px}.masthead{height:96px;display:flex;align-items:center;justify-content:space-between;border-bottom:1px solid var(--line);gap:20px}.brand{font-family:var(--serif);font-size:1.85rem;font-weight:600;text-decoration:none;display:flex;align-items:center;gap:12px;letter-spacing:-.05em}.brand-symbol{font-family:var(--mono);font-size:30px;color:var(--accent);letter-spacing:-8px;margin-right:8px}.beta{font-size:13px;font-family:var(--mono);color:var(--muted);align-self:flex-start;margin-top:4px;letter-spacing:0}nav{display:flex;align-items:center;gap:28px;font-size:13px}nav a{min-height:44px;display:flex;align-items:center;text-decoration:none}.language{font-family:var(--mono);border-left:1px solid var(--line);padding-left:24px}.theme{border:0;font-size:23px;padding:0;width:44px}.skip{position:fixed;top:-80px;left:12px;background:var(--paper);padding:16px;z-index:10}.skip:focus{top:12px}.eyebrow,.mono{font-family:var(--mono);font-size:12px;letter-spacing:.025em}.eyebrow{letter-spacing:.1em;color:var(--muted);line-height:1.6}.home-intro{padding-block:46px 30px;display:grid;grid-template-columns:1fr 310px;gap:60px;align-items:end}.home-intro h1{margin:18px 0 0;max-width:800px}.home-intro .intro-side{font-size:15px;margin:0 0 6px}.ink-accent{color:var(--accent)}.notebook-line{display:flex;justify-content:space-between;border-top:1px solid var(--ink);padding-top:18px;margin-top:10px}.lab{background:var(--well);border:1px solid var(--line);padding:22px 26px;position:relative;margin:22px 0 0}.lab:before,.lab:after{content:"+";font-family:var(--mono);position:absolute;top:-11px;color:var(--muted);background:var(--paper);font-size:15px}.lab:before{left:-5px}.lab:after{right:-5px}.lab-top{display:flex;justify-content:space-between;gap:12px;margin-bottom:18px}.lanes{display:grid;grid-template-columns:1fr 1fr;gap:30px}.lane{min-width:0}.lane+.lane{border-left:1px solid var(--line);padding-left:30px}.lane-heading{display:flex;justify-content:space-between;gap:12px;font-size:14px}.lane canvas{width:100%;height:auto;aspect-ratio:400/180;display:block}.lane-foot{display:block;font-size:12px;color:var(--muted);min-height:20px}.lane-foot[data-frozen=true]{color:var(--accent)}.lab-controls{margin-top:20px;border-top:1px solid var(--line);padding-top:16px;display:flex;align-items:center;justify-content:space-between;gap:16px}fieldset{margin:0;padding:0;border:0}legend{font-size:12px;margin-bottom:8px}.segments{display:flex}.segments button{width:62px;border-color:var(--muted);font-family:var(--mono);font-size:14px}.segments button+button{border-left:0}.segments button[aria-pressed=true]{background:var(--ink);color:var(--paper)}.options{display:flex;gap:20px;font-size:13px}.options label{display:flex;min-height:44px;align-items:center;gap:8px}.options input{width:18px;height:18px}.transport{display:flex;align-items:center;gap:8px;margin-top:18px}.transport button{font-size:13px}.transport .play{background:var(--accent);border-color:var(--accent);color:var(--paper);min-width:110px}.transport output{margin-left:auto}.scrubber{display:flex;align-items:center;gap:14px;font-size:12px;margin-top:10px}.scrubber input{flex:1;min-width:0;height:44px}.lab-caption{font-size:13px;margin:4px 0 0;color:var(--muted);max-width:80ch}.credit-line{display:flex;gap:12px;align-items:baseline;padding:18px 0;font-size:12px;line-height:1.8;color:var(--muted);flex-wrap:wrap}.credit-line a{color:var(--ink)}.seal{color:var(--accent);border:1px solid currentColor;padding:1px 5px;font-size:11px}.home-story{display:grid;grid-template-columns:240px 1fr 260px;gap:40px;border-top:1px solid var(--line);padding-block:38px 62px;margin-top:20px}.home-story h2{font-size:2.5rem;margin:0}.home-story p{font-size:15px;margin-bottom:20px}.text-link{display:inline-flex;min-height:44px;align-items:center;gap:28px}.margin-note{color:var(--muted);font-size:13px;border-left:1px solid var(--line);padding-left:20px}.article-header{padding-top:42px;max-width:980px}.article-header h1{margin:18px 0}.deck{max-width:780px;font-size:18px;line-height:1.7}.article-layout{display:grid;grid-template-columns:180px minmax(0,760px);gap:50px;padding:50px 0 70px;justify-content:center}.article-aside{font-size:12px;color:var(--muted);border-top:1px solid var(--line);padding-top:16px}.article-aside a{display:block;margin-bottom:16px;min-height:32px}.prose{min-width:0;font-size:17px;line-height:1.85}.prose h2{margin-top:48px}.prose h2:first-child{margin-top:0}.prose h3{margin-top:28px}.prose p{margin-bottom:22px}.prose li{margin-bottom:12px}.prose strong{font-weight:600}.prose code{font-family:var(--mono);font-size:.82em}.prose pre{padding:22px;overflow:auto;border:1px solid var(--line);font-size:14px}.prose blockquote{border-left:2px solid var(--accent);padding-left:24px;margin:30px 0;font-size:20px}.timeline-figure{margin:30px 0;padding:22px 0;border-top:1px solid var(--line);border-bottom:1px solid var(--line)}.frame-strip{display:grid;grid-template-columns:repeat(6,minmax(0,1fr));gap:6px;margin:20px 0}.frame-cell{padding:10px 3px;text-align:center;border:1px solid var(--line);font-size:11px}.frame-cell.held{color:var(--accent);border-color:var(--accent)}.frame-cell svg{display:block;width:100%;height:auto}.timeline-figure figcaption{font-size:13px;line-height:1.8;color:var(--muted)}.evidence{background:var(--well);padding:24px;margin-top:36px}.evidence h2{font-size:1.6rem;margin:0 0 20px}.evidence dt{font-size:13px;font-weight:600;margin-top:20px}.evidence dd{margin:6px 0;font-size:14px}.simple-page{max-width:800px;margin:auto;padding-block:60px 100px}.simple-page h1{margin-top:18px}.simple-page .prose{max-width:680px}.note-row{border-top:1px solid var(--line);padding:28px 0;display:grid;grid-template-columns:64px 1fr;gap:20px}.note-row h2{margin-bottom:14px}.note-row p{font-size:15px}.chooser{padding-block:90px 120px;max-width:950px;margin:auto}.chooser h1{font-size:clamp(3rem,7vw,6rem)}.language-options{display:grid;grid-template-columns:1fr 1fr;gap:40px;margin-top:60px}.language-options a{display:block;padding:25px 0;border-top:1px solid var(--ink);text-decoration:none;font-size:25px}.language-options p{font-size:15px;max-width:34ch}.footer{border-top:1px solid var(--line);padding-top:36px;padding-bottom:30px;display:grid;grid-template-columns:1fr 1fr;gap:20px}.footer-brand{font-family:var(--serif);font-size:24px;text-decoration:none}.footer p{font-size:12px;color:var(--muted);margin-top:10px}.footer-links{display:flex;justify-content:flex-end;gap:10px 20px;flex-wrap:wrap;font-size:12px;align-content:start}.footer-links a{min-height:32px}.beta-note{grid-column:1/-1;font-family:var(--mono);padding-top:16px}.no-js{font-size:14px}@media(max-width:800px){.masthead,.footer,main{padding-inline:22px}.masthead{height:76px}nav{gap:10px}nav a{font-size:12px}.language{padding-left:12px}.brand{font-size:1.5rem;gap:6px}.brand-symbol{font-size:24px}.home-intro{grid-template-columns:1fr;gap:16px;padding-block:30px 24px}.home-intro h1{margin-top:10px}.home-intro .intro-side{max-width:520px;font-size:14px}.home-story{grid-template-columns:1fr 2fr;gap:24px}.home-story .margin-note{grid-column:2}.options{gap:2px;flex-direction:column}.article-layout{grid-template-columns:1fr;gap:24px;padding-top:30px}.article-aside{display:flex;gap:20px;flex-wrap:wrap}.article-aside a{margin:0}.lab{padding:18px}.lane+.lane{padding-left:16px}.lanes{gap:16px}.prose{font-size:16px}}@media(max-width:520px){.masthead,.footer,main{padding-inline:18px}.masthead{gap:8px}.brand-symbol{display:none}nav a:nth-child(2){display:none}.home-intro h1{font-size:2.85rem}:lang(ja) .home-intro h1{font-size:2.05rem}.notebook-line{font-size:11px;gap:15px}.notebook-line span:last-child{white-space:nowrap}.lab{padding:14px 12px;margin-top:18px;display:flex;flex-direction:column}.lab-top{margin-bottom:12px}.lab-top .eyebrow{font-size:12px;letter-spacing:.03em}.lanes{grid-template-columns:1fr;gap:10px;order:3;margin-top:16px}.lane+.lane{border-left:0;border-top:1px solid var(--line);padding:10px 0 0}.lane canvas{aspect-ratio:400/180}.lane-foot{display:none}.lane-foot[data-state]{display:block;font-size:12px}.lane-heading{font-size:12px}.lab-controls{align-items:flex-start;gap:10px;margin-top:0;padding-top:0;border-top:0;flex-wrap:wrap;order:1}.segments button{width:44px;padding:0;font-size:12px}.options{font-size:12px;flex-direction:row;flex-wrap:wrap;gap:12px}.options input{width:16px;height:16px;margin-left:0}.options label{min-height:44px;gap:5px}.transport{gap:5px;margin-top:14px;flex-wrap:wrap;order:2}.transport .play{min-width:84px}.transport button{padding-inline:10px;font-size:12px;min-width:44px}.transport output{font-size:12px}.scrubber{margin-top:4px;order:4}.lab-caption{font-size:12px;order:5}.credit-line{gap:5px 10px;font-size:11px;padding-block:12px}.home-story{grid-template-columns:1fr;gap:12px;padding-block:28px 40px}.home-story h2{font-size:2rem}.home-story .margin-note{grid-column:auto;margin-top:10px}.article-header{padding-top:30px}.article-header h1{font-size:2.65rem}:lang(ja) .article-header h1{font-size:2rem}.deck{font-size:15px}.frame-strip{gap:3px}.frame-cell,.frame-cell .mono{font-size:10px}.footer{grid-template-columns:1fr;gap:14px}.footer-links{justify-content:flex-start}.simple-page{padding-block:36px 60px}.simple-page h1{font-size:2.5rem}.chooser{padding-block:50px 70px}.language-options{grid-template-columns:1fr;gap:20px;margin-top:35px}.note-row{grid-template-columns:36px 1fr;gap:12px}}@media(prefers-reduced-motion:reduce){*{scroll-behavior:auto!important}}}@font-face{font-family:Newsreader Variable;font-style:normal;font-display:swap;font-weight:200 800;src:url(/_astro/newsreader-vietnamese-wght-normal.Czsa-EzN.woff2) format("woff2-variations");unicode-range:U+0102-0103,U+0110-0111,U+0128-0129,U+0168-0169,U+01A0-01A1,U+01AF-01B0,U+0300-0301,U+0303-0304,U+0308-0309,U+0323,U+0329,U+1EA0-1EF9,U+20AB}@font-face{font-family:Newsreader Variable;font-style:normal;font-display:swap;font-weight:200 800;src:url(/_astro/newsreader-latin-ext-wght-normal.C-3rgBeH.woff2) format("woff2-variations");unicode-range:U+0100-02BA,U+02BD-02C5,U+02C7-02CC,U+02CE-02D7,U+02DD-02FF,U+0304,U+0308,U+0329,U+1D00-1DBF,U+1E00-1E9F,U+1EF2-1EFF,U+2020,U+20A0-20AB,U+20AD-20C0,U+2113,U+2C60-2C7F,U+A720-A7FF}@font-face{font-family:Newsreader Variable;font-style:normal;font-display:swap;font-weight:200 800;src:url(/_astro/newsreader-latin-wght-normal.CCVVNp6i.woff2) format("woff2-variations");unicode-range:U+0000-00FF,U+0131,U+0152-0153,U+02BB-02BC,U+02C6,U+02DA,U+02DC,U+0304,U+0308,U+0329,U+2000-206F,U+20AC,U+2122,U+2191,U+2193,U+2212,U+2215,U+FEFF,U+FFFD}@font-face{font-family:IBM Plex Mono;font-style:normal;font-display:swap;font-weight:400;src:url(/_astro/ibm-plex-mono-latin-400-normal.DMJ8VG8y.woff2) format("woff2"),url(/_astro/ibm-plex-mono-latin-400-normal.CvHOgSBP.woff) format("woff")}