@font-face{font-family:'Schibsted Grotesk';font-style:normal;font-weight:400 800;font-display:swap;src:url(/fonts/schibsted-grotesk.woff2) format('woff2');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-weight:400;font-display:swap;src:url(/fonts/ibm-plex-mono-400.woff2) format('woff2');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}
@property --m{syntax:'<percentage>';inherits:false;initial-value:45%}
@property --m2{syntax:'<percentage>';inherits:false;initial-value:100%}
:root{--paper:#fff;--ink:#111214;--muted:#686b73;--faint:#b9bcc3;--rule:#e5e6e9;--soft:#f5f5f6;--neon:#7B83FF;
 --logo:url("/logo.png");--rail:max(25%,280px);--gutter:clamp(32px,5vw,90px);--top:clamp(124px,15svh,168px);
 --mono:'IBM Plex Mono',ui-monospace,monospace;--ease:cubic-bezier(.2,.7,.2,1);--spring:cubic-bezier(.3,.7,.2,1.3);
 --c-bg:#fff;--c-ink:#2b2d33;--c-muted:#6c6f77;--c-line:#e3e4e8;--c-hover:#f3f3f5;--c-shadow:0 10px 36px #1112141c;color-scheme:light;
 --ser1:#7390D8;--ser2:#DE8F68;--s1:#33605A;--s2:#5F8E84;--s3:#9ABAB1;--prose:860px;--bar:84px;--ea:#8A5CFF}
:root[data-theme=dark]{--paper:#0f1012;--ink:#ececee;--muted:#9a9ea7;--faint:#4d5058;--rule:#25272c;--soft:#18191c;
 --c-bg:#1b1c20;--c-ink:#ececee;--c-muted:#a3a6ae;--c-line:#2f3137;--c-hover:#26282d;--c-shadow:0 10px 36px #00000080;color-scheme:dark;
 --ser1:#6A86D4;--ser2:#C27B59;--s1:#B0D3C9;--s2:#6FA096;--s3:#3D5A54}
.no-trans,.no-trans *,.no-trans *::before,.no-trans *::after{transition:none!important}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
html,body{margin:0;background:var(--paper);color:var(--ink)}
body{font-family:'Schibsted Grotesk',Arial,sans-serif;-webkit-font-smoothing:antialiased}
a{color:inherit;text-decoration:none}
button{font:inherit;cursor:pointer}
:focus-visible{outline:2px solid var(--ink);outline-offset:4px}
.dot{color:inherit}
.label,.copy{font:11px/1.65 var(--mono);letter-spacing:.07em;text-transform:uppercase;color:var(--muted)}
.copy{margin:0;position:relative}
.copy .cp,.copy .flag{position:absolute;right:100%;width:12px;margin-right:.4em}
.copy .cp{text-align:center;letter-spacing:0}
.copy .flag{height:8px;margin-top:5px;box-shadow:0 0 0 1px var(--rule)}
.foot-row{display:flex;align-items:center;gap:14px}
.topbar{display:flex;align-items:center;justify-content:flex-end;gap:28px;height:var(--bar)}
.top-nav{display:flex;align-items:center;gap:28px;font-size:14px}
.top-nav a{color:var(--muted);transition:color .2s}
.top-nav a:hover,.top-nav a[aria-current]{color:var(--ink)}
.m-only,.theme.m-only{display:none}
.theme{display:grid;place-items:center;width:30px;height:30px;padding:0;border:1px solid var(--rule);background:var(--paper);color:var(--ink);transition:transform .24s var(--spring),box-shadow .24s var(--spring),border-color .2s}
.theme i{width:12px;height:12px;border:1.5px solid currentColor;border-radius:50%;background:linear-gradient(90deg,currentColor 50%,transparent 50%)}
@media(hover:hover){.theme:hover{border-color:var(--ink);transform:translate(-2px,-2px);box-shadow:2px 2px 0 var(--ink)}}
.theme.lift{border-color:var(--ink);transform:translate(-2px,-2px);box-shadow:2px 2px 0 var(--ink)}
.theme.down{transform:translate(1px,1px);box-shadow:0 0 0 var(--ink);transition-duration:.05s}
.text-link{display:inline-flex;align-items:center;justify-content:space-between;gap:40px;min-width:140px;border-bottom:1px solid currentColor;font-size:14px;line-height:1.5;padding-bottom:10px;transition:color .2s}
.text-link .arrow{font:17px/1 Arial,sans-serif;transition:transform .2s var(--ease)}
.text-link:hover{color:var(--muted)}
.text-link:hover .arrow{transform:translateX(3px)}

/* ---------- the Element cell: ATTOLOOP as the -18 cell of a table of SI prefixes ---------- */
.stage{position:relative;display:block;aspect-ratio:1;container-type:size;--s:100cqh;margin:0;padding:0;border:0;background:none;color:var(--ink);cursor:pointer;touch-action:manipulation;-webkit-tap-highlight-color:transparent;user-select:none;-webkit-user-select:none}
.stage:focus-visible{outline-offset:8px}
.stage>*{position:absolute;pointer-events:none}
.ghosts{left:calc(var(--s)*-1.08);top:calc(var(--s)*-1.08);width:calc(var(--s)*3.16);height:calc(var(--s)*3.16);display:grid;grid-template:repeat(3,1fr)/repeat(3,1fr);gap:calc(var(--s)*.08);-webkit-mask:radial-gradient(closest-side,#000 var(--m),transparent var(--m2));mask:radial-gradient(closest-side,#000 var(--m),transparent var(--m2));transition:--m 1.1s var(--ease),--m2 1.1s var(--ease)}
.g{position:relative;border:1px solid var(--rule);color:var(--faint);transition:border-color .9s,color .9s,background-color .9s,box-shadow .9s}
.g.c{visibility:hidden}
.g b,.tile .num{position:absolute;left:8%;top:8%;font:400 calc(var(--s)*.07)/1 var(--mono);transition:color .9s}
.g i{position:absolute;inset:0;display:grid;place-items:center;font-style:normal;font-size:calc(var(--s)*.4);font-weight:450;letter-spacing:-.04em;transition:color .3s}
.g em,.tile .nm{position:absolute;left:8%;bottom:8%;font:normal 400 calc(var(--s)*.058)/1 var(--mono);transition:color .9s}
.tile{inset:0;background:var(--paper);border:1.5px solid var(--ink);transition:transform .24s var(--spring),box-shadow .24s var(--spring),border-color .5s}
.tile .num,.tile .nm{z-index:1;color:var(--ink)}
.lw{position:absolute;z-index:1;left:17%;right:17%;top:52%;transform:translateY(-50%);aspect-ratio:800/481}
.logo{position:absolute;inset:0;background:var(--ink);-webkit-mask:var(--logo) center/contain no-repeat;mask:var(--logo) center/contain no-repeat}
/* lift on hover, sink on press (order matters) */
@media(hover:hover){.stage:hover .tile{transform:translate(calc(var(--s)*-.03),calc(var(--s)*-.03));box-shadow:calc(var(--s)*.03) calc(var(--s)*.03) 0 var(--ink)}}
.stage.lift .tile{transform:translate(calc(var(--s)*-.03),calc(var(--s)*-.03));box-shadow:calc(var(--s)*.03) calc(var(--s)*.03) 0 var(--ink)}
.e1{--i:0}.e2{--i:1}.e3{--i:2}.e4{--i:3}.e5{--i:4}.e6{--i:5}.e7{--i:6}.e8{--i:7}
/* easter egg: each symbol and ATTOLOOP switch to a pure neon fill: no edge, no glow */
.g{--ec:var(--neon)}
.stage{--ea:var(--neon)}
.stage.egg .ghosts{--m:74%;--m2:100%;transition-duration:.45s}
.stage.egg .g i{color:var(--ec);transition:color 0s calc(var(--i)*55ms)}
.stage.egg .logo{background:var(--ea);transition:background-color 0s .46s}
.stage.down .tile{transform:translate(calc(var(--s)*.004),calc(var(--s)*.004));box-shadow:0 0 0 var(--ink);transition:transform .05s ease-out,box-shadow .05s ease-out}

/* ---------- home: one screen; the cell spans exactly the text block ---------- */
.home{display:grid;grid-template-columns:var(--rail) minmax(0,1fr);grid-template-rows:1fr auto 1.12fr;min-height:100svh}
.rail{position:relative;overflow:hidden;background:var(--paper)}
.home>.rail{grid-column:1;grid-row:1/-1;display:grid;grid-template-columns:minmax(0,1fr);grid-template-rows:subgrid;border-right:1px solid var(--rule)}
.home>.rail>.stage{grid-row:2;height:100%;justify-self:center;align-self:stretch}
.home>.foot-row{grid-column:1;grid-row:3;align-self:end;justify-self:start;z-index:1;margin:0 0 40px 13%}
.home>.topbar{grid-column:2;grid-row:1;align-self:start;padding-inline:var(--gutter);z-index:2}
.hero{grid-column:2;grid-row:2;min-width:0;padding-inline:var(--gutter)}
.hero h1{margin:0;font-size:clamp(34px,4.1vw,76px);font-weight:460;line-height:1.13;letter-spacing:-.055em;text-box:trim-start cap alphabetic}
.hero h1>span{display:block;white-space:nowrap}
.sub{margin:34px 0 0;font-size:17px;line-height:1.5;color:var(--muted);text-box:trim-end cap alphabetic}
.links{display:flex;gap:34px;margin-top:30px}

/* home table: every cell reads like the ATTOLOOP cell (number top-left, symbol centre, name bottom-left), all in one grey.
   One smooth radial fade outward from ATTOLOOP.
   (Inner pages keep the small cell's tight radial fade.) */
.home .g{--gh:color-mix(in oklab,var(--muted) 58%,var(--paper))}
.home .g,.home .g b,.home .g em{color:var(--gh)}
.home .ghosts{-webkit-mask:radial-gradient(closest-side,#000 34%,#000a 70%,#0005 100%);mask:radial-gradient(closest-side,#000 34%,#000a 70%,#0005 100%)}
.home .stage.egg .ghosts{-webkit-mask:none;mask:none}

/* ---------- inner pages: rail with a small cell, nav, contents, copyright ---------- */
.doc{display:grid;grid-template-columns:var(--rail) minmax(0,1fr);min-height:100svh}
.doc>.rail{position:sticky;top:0;align-self:start;height:100svh;border-right:1px solid var(--rule)}
.rail-in{position:absolute;inset:0;display:flex;flex-direction:column;align-items:flex-start;padding:var(--top) 22px 40px 13%}
.doc .rail-in{--cs:clamp(96px,8.4vw,128px)}
.doc .stage{width:var(--cs);height:var(--cs);flex:none}
.doc .ghosts{--m:24%;--m2:60%}
.rail-nav{display:none}
.toc{margin-top:calc(var(--cs)*.8);min-height:0;width:100%;overflow:auto;scrollbar-width:none}
.toc ol{list-style:none;margin:12px 0 0;padding:0}
.toc a{position:relative;display:grid;grid-template-columns:30px 1fr;padding:5px 0;font-size:13px;line-height:1.4;color:var(--muted);transition:color .2s}
.toc a span{font:10.5px/1.75 var(--mono);color:var(--faint)}
.toc a:hover,.toc a[aria-current]{color:var(--ink)}
.toc a[aria-current]::before{content:"";position:absolute;left:-14px;top:12px;width:5px;height:5px;border-radius:50%;background:var(--ink)}
.doc .rail .foot-row{margin-top:auto;padding-top:6px}
.page{position:relative;min-width:0;padding:var(--top) var(--gutter) 120px}
.page>.topbar{position:absolute;top:0;left:var(--gutter);right:var(--gutter)}
.page h1{margin:0;font-size:clamp(34px,3.6vw,60px);font-weight:460;line-height:1.1;letter-spacing:-.05em;text-box:trim-start cap alphabetic;max-width:880px;text-wrap:balance}
@supports not (text-box:trim-start cap alphabetic){.hero h1,.page h1{margin-top:-.2em}}
.lede{margin:26px 0 0;font-size:18px;line-height:1.6;color:var(--muted);max-width:600px}
.foot{display:none}
.page>.text-link{margin-top:44px}

/* research index: each post is an element cell */
.entries{margin-top:64px;border-top:1px solid var(--rule);max-width:880px}
.entry{display:grid;grid-template-columns:auto minmax(0,1fr) auto;gap:30px;align-items:center;padding:30px 0;border-bottom:1px solid var(--rule)}
.mini{position:relative;width:96px;height:96px;border:1.5px solid var(--ink);background:var(--paper);transition:transform .24s var(--spring),box-shadow .24s var(--spring)}
.mini b{position:absolute;left:8px;top:8px;font:400 10px/1 var(--mono)}
.mini i{position:absolute;inset:0;display:grid;place-items:center;font-style:normal;font-size:40px;font-weight:500;letter-spacing:-.045em}
.mini em{position:absolute;left:8px;bottom:8px;font:normal 400 9px/1 var(--mono)}
@media(hover:hover){.entry:hover .mini{transform:translate(-3px,-3px);box-shadow:3px 3px 0 var(--ink)}}
.entry.lift .mini{transform:translate(-3px,-3px);box-shadow:3px 3px 0 var(--ink)}
.entry.down .mini{transform:translate(1px,1px);box-shadow:0 0 0 var(--ink);transition-duration:.05s}
.entry .t{display:block}
.entry .t b{display:block;margin:6px 0 8px;font-size:30px;font-weight:460;letter-spacing:-.035em;line-height:1.15}
.entry .ex{display:block;font-size:15px;line-height:1.55;color:var(--muted);max-width:560px}
.entry .arr{font:20px/1 Arial,sans-serif;transition:transform .2s var(--ease)}
.entry:hover .arr{transform:translateX(4px)}

/* buttons share the lift */
.btn{border:1.5px solid var(--ink);background:var(--paper);color:var(--ink);padding:11px 16px;font:12px/1 var(--mono);letter-spacing:.06em;text-transform:uppercase;transition:transform .24s var(--spring),box-shadow .24s var(--spring)}
@media(hover:hover){.btn:hover{transform:translate(-3px,-3px);box-shadow:3px 3px 0 var(--ink)}}
.btn.lift{transform:translate(-3px,-3px);box-shadow:3px 3px 0 var(--ink)}
.btn.down{transform:translate(1px,1px);box-shadow:0 0 0 var(--ink);transition-duration:.05s}

/* contact */
.mail{display:flex;align-items:center;flex-wrap:wrap;gap:22px;margin-top:60px}
.mail a{font-size:clamp(24px,2.6vw,40px);font-weight:440;letter-spacing:-.035em;border-bottom:1.5px solid currentColor;padding-bottom:6px;transition:color .2s}
.mail a:hover{color:var(--muted)}

/* post */
.progress{position:fixed;left:0;top:0;right:0;height:2px;z-index:20;pointer-events:none}
.progress span{display:block;height:100%;background:var(--ink);transform-origin:0 50%;transform:scaleX(var(--p,0))}
.post .meta{display:flex;flex-wrap:wrap;gap:6px 22px;margin-top:26px}
.prose{max-width:var(--prose);margin-top:64px;font-size:17.5px;line-height:1.72}
.prose>*:first-child{margin-top:0}
.prose p{margin:0 0 1.15em}
.prose a{text-decoration:underline;text-decoration-color:var(--faint);text-underline-offset:3px;transition:text-decoration-color .2s}
.prose a:hover{text-decoration-color:var(--ink)}
.prose strong{font-weight:600}
.prose h2{margin:84px 0 22px;font-size:30px;font-weight:460;line-height:1.2;letter-spacing:-.035em;scroll-margin-top:40px}
.prose h2 .num{display:block;margin-bottom:14px;font:12px/1 var(--mono);letter-spacing:.08em;color:var(--muted)}
.prose h3{margin:44px 0 14px;font-size:20px;font-weight:500;letter-spacing:-.02em}
.prose hr{border:0;border-top:1px solid var(--rule);margin:60px 0}
.prose ul,.prose ol{padding-left:1.25em;margin:0 0 1.2em}
.prose li{margin:.45em 0}
.prose code{font:.86em var(--mono);background:var(--soft);padding:.12em .35em}
.prose pre{background:var(--soft);padding:16px 18px;overflow:auto;font-size:13px;line-height:1.6;margin:0 0 1.3em}
.prose pre code{background:none;padding:0;font-size:inherit}
.prose img{display:block;width:100%;height:auto;margin:36px 0 10px}
.prose p:has(>img){margin:0}
.prose .note{font-size:13px;line-height:1.55;color:var(--muted);margin:10px 0 30px}
.prose .note em{font-style:normal}
.tablewrap{overflow-x:auto;margin:28px 0 12px}
.prose table{width:100%;border-collapse:collapse;font-size:14px;line-height:1.5}
.prose th{text-align:left;font:10.5px/1.5 var(--mono);letter-spacing:.06em;text-transform:uppercase;color:var(--muted);font-weight:400;border-bottom:1.5px solid var(--ink);padding:0 14px 10px 0;vertical-align:bottom}
.prose td{border-bottom:1px solid var(--rule);padding:12px 14px 12px 0;vertical-align:top}
.stats{display:grid;grid-template-columns:1fr 1fr;gap:16px;margin:40px 0 4px}
.stat{border:1.5px solid var(--ink);padding:16px 18px 18px}
.stat .who{display:flex;justify-content:space-between;gap:10px;font:11px/1.5 var(--mono);letter-spacing:.05em;text-transform:uppercase}
.stat .runs{color:var(--muted)}
.stat dl{margin:16px 0 0}
.stat dl div{padding:12px 0;border-top:1px solid var(--rule)}
.stat dt{font-size:13px;line-height:1.4;color:var(--muted)}
.stat dd{margin:6px 0 0;font-size:34px;font-weight:460;letter-spacing:-.04em;line-height:1}
.stat dd small{font-size:15px;color:var(--muted);letter-spacing:0}
.prose details{border:1px solid var(--rule);margin:14px 0;padding:0 18px;transition:border-color .2s}
.prose details[open]{border-color:var(--faint)}
.prose summary{display:flex;justify-content:space-between;gap:14px;padding:15px 0;cursor:pointer;list-style:none;font-weight:500;font-size:15px}
.prose summary::-webkit-details-marker{display:none}
.prose summary::after{content:"+";font:15px/1.4 var(--mono);color:var(--muted)}
.prose details[open] summary::after{content:"\2212"}
.prose details>:last-child{margin-bottom:18px}
.cta{display:flex;justify-content:space-between;align-items:flex-end;gap:24px;max-width:var(--prose);margin-top:100px;padding-top:40px;border-top:1.5px solid var(--ink)}
.cta h2{margin:0;font-size:30px;font-weight:460;line-height:1.2;letter-spacing:-.035em;max-width:430px}

/* ---------- charts: HTML + SVG, theme-aware, no images ---------- */
.chart{margin:44px 0 12px;font-size:13px;line-height:1.4}
.ch-head{display:flex;flex-direction:column;gap:12px;margin-bottom:22px}
.ch-head b{font-size:20px;font-weight:500;letter-spacing:-.02em;line-height:1.3}
.keys{display:flex;flex-wrap:wrap;gap:6px 20px;font-size:13.5px;color:var(--muted)}
.k{display:inline-flex;align-items:center;gap:7px}
.k svg{flex:none;overflow:visible}
.k.m1 circle,.k.m1 rect{fill:var(--ser1)}.k.m2 rect{fill:var(--ser2)}
.k.s1 rect{fill:var(--s1)}.k.s2 rect{fill:var(--s2)}.k.s3 rect{fill:var(--s3)}
.k.fe rect,.k.md rect{fill:var(--ink)}.k.fm rect{fill:var(--faint)}
.chart svg text{font-family:var(--mono);font-size:12px;fill:var(--muted);font-variant-numeric:tabular-nums}
.rows .r{display:grid;grid-template-columns:var(--lab,92px) minmax(0,1fr);align-items:center;column-gap:16px}
.rows .rl{font-size:14px;color:var(--ink);text-align:right}
.tr,.ax{display:block;width:100%;overflow:visible}
.gl{stroke:var(--rule);stroke-width:1}
.tr .hit{fill:transparent;stroke:transparent;stroke-width:14}
.tr g{cursor:default;outline:none}
.mk.m1,.f3 .m1{fill:var(--ser1)}.mk.m2,.f3 .m2{fill:var(--ser2)}
.mk{stroke:var(--paper);stroke-width:2;transition:transform .15s}
.fl-e line:not(.hit){stroke:var(--ink);stroke-width:2.5}
.fl-m line:not(.hit){stroke:var(--faint);stroke-width:2.5}
.tr g:hover .mk,.tr g:focus-visible .mk{stroke:var(--ink);stroke-width:1.5}
.cnt{font-size:10.5px!important}
.axr .ax{margin-top:6px}
.axt{margin:10px 0 0;font:11px/1.4 var(--mono);color:var(--muted);text-align:center}
.f1 .r{--lab:160px;grid-template-columns:var(--lab) minmax(0,1fr) 64px;gap:10px 20px;padding:10px 6px}
.f1 .rl{text-align:left}
.f1 .rl small{display:block;margin-top:4px;font:11px/1.5 var(--mono);color:var(--muted)}
.f1-value{font:20px/1.2 var(--mono);text-align:right;color:var(--ink)}
.f1 .f1-hdr{padding-block:0;font:10px/1.4 var(--mono);text-align:right;color:var(--muted);text-transform:uppercase}
.f1-range .span,.k.f1-range line{stroke:var(--s2);stroke-width:5}
.f1-point,.k.f1-point circle,.k.f1-point rect{fill:var(--ink)}
.f1 g:focus-visible .f1-point,.f1 g:hover .f1-point{stroke:var(--s2);stroke-width:3}
.f1-range:focus-visible .span,.f1-range:hover .span{stroke:var(--ink)}
.f2 .r{--lab:70px;padding-right:30px}
.f3 .r{--lab:240px;grid-template-columns:var(--lab) minmax(0,1fr) 70px 104px}
.f3 .r[data-v]{padding:1px 0;cursor:default;outline:none}
.f3 .r[data-v]:hover,.f3 .r[data-v]:focus-visible{background:var(--soft)}
.f3 .c{font:11.5px/1 var(--mono);color:var(--muted);text-align:right;font-variant-numeric:tabular-nums}
.f3 .hdr .c{color:var(--ink);font-size:10.5px;letter-spacing:.04em;text-transform:uppercase}
.f4 .r{--lab:170px;padding-right:12px}
.lim{stroke:var(--ink);stroke-width:1}
.med{stroke:var(--ink);stroke-width:2}
.chart svg text.medl{fill:var(--ink)}
.limx text{fill:var(--ink)!important}
.ch-data{margin-top:14px;border:0!important;padding:0!important}
.prose .ch-data summary{display:inline-flex;align-items:center;gap:12px;min-height:44px;padding:10px 12px;border:1px solid var(--ink);background:var(--paper);font:11px/1.6 var(--mono);letter-spacing:.06em;text-transform:uppercase;color:var(--ink);font-weight:400;transition:transform .24s var(--spring),box-shadow .24s var(--spring)}
.prose .ch-data summary::after{content:"";flex:none;width:12px;height:12px;color:inherit;background:linear-gradient(currentColor,currentColor) center/100% 1px no-repeat,linear-gradient(currentColor,currentColor) center/1px 100% no-repeat}
.prose .ch-data[open] summary::after{content:"";background-size:100% 1px,0 0}
.prose .ch-data summary:focus-visible{outline:2px solid var(--ink);outline-offset:4px}
@media(hover:hover){.prose .ch-data summary:hover{transform:translate(-2px,-2px);box-shadow:2px 2px 0 var(--ink)}}
.prose .ch-data summary.lift{transform:translate(-2px,-2px);box-shadow:2px 2px 0 var(--ink)}
.prose .ch-data summary:active{transform:translate(1px,1px);box-shadow:none;transition-duration:.05s}
.ch-data .tablewrap{max-height:340px;overflow:auto;margin:10px 0 0}
.ch-data table{font-size:13px}
.tip{position:fixed;z-index:50;max-width:280px;padding:8px 11px;background:var(--ink);color:var(--paper);font-size:12px;line-height:1.4;pointer-events:none;box-shadow:0 8px 24px #0000002e}
.tip b{display:block;font-weight:500;font-size:13.5px}
.tip span{display:block;opacity:.75}
.tip[hidden]{display:none}

/* ---------- responsive ---------- */
@media(max-width:1200px){:root{--gutter:48px}}
@media(max-width:860px){
 :root{--gutter:clamp(22px,6vw,48px)}
 .home{grid-template-columns:1fr;grid-template-rows:auto auto 1fr auto}
 .home>.rail{--ms:clamp(76px,24vw,140px);grid-row:2;grid-template-rows:none;height:calc(var(--ms)*2.7);border-right:0;border-top:1px solid var(--rule);border-bottom:1px solid var(--rule);place-items:center}
 .home>.topbar{grid-column:1;grid-row:1;height:64px;gap:16px}
 .home>.topbar .top-nav{gap:16px;font-size:13px}
 .home>.rail>.stage{grid-row:auto;height:var(--ms);justify-self:center;align-self:center}
 .hero{grid-column:1;grid-row:3;align-self:center;padding-block:32px 36px;text-align:center}
 .home>.foot-row{grid-row:4;justify-self:center;margin:0 0 22px}
 .hero h1{font-size:clamp(28px,7.2vw,46px);text-wrap:balance}
 .hero h1>span{display:inline;white-space:normal}
 .sub{font-size:15px;margin-top:22px}
 .links{gap:22px;margin-top:26px}
 .text-link{min-width:118px;gap:24px;font-size:13px}
 html{scroll-padding-top:96px}
 .doc{display:block}
 .doc>.rail{position:sticky;top:0;z-index:10;height:auto;border-right:0;border-bottom:1px solid var(--rule);background:color-mix(in oklab,var(--paper) 90%,transparent);-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px)}
 .rail-in{position:relative;flex-direction:row;align-items:center;justify-content:space-between;padding:14px var(--gutter)}
 .doc .rail-in{--cs:52px}
 .m-only{display:flex}
 .theme.m-only{display:grid}
 .page>.topbar{display:none}
 .rail-in .top-nav{margin-left:auto;gap:16px;font-size:13px}
 .rail-in .theme{margin-left:16px;flex:none}
 .toc,.doc .rail .copy{display:none}
 .doc .rail .foot-row{display:none}
 .page{padding:44px var(--gutter) 28px}
 .page h1{font-size:clamp(30px,8vw,46px)}
 .lede{font-size:16px}
 .foot{display:block;margin-top:80px;padding-top:16px;border-top:1px solid var(--rule)}
 .entries{margin-top:44px}
 .entry{grid-template-columns:auto minmax(0,1fr);gap:18px;padding:24px 0}
 .entry .arr{display:none}
 .mini{width:72px;height:72px}.mini i{font-size:30px}
 .entry .t b{font-size:24px}
 .mail{margin-top:44px}
 .prose{font-size:16px;margin-top:48px}
 .prose h2{font-size:25px;margin-top:64px}
 .stats{grid-template-columns:1fr}
 .f3 .r{--lab:1fr;grid-template-columns:minmax(0,1fr) 52px 84px;row-gap:4px}
 .f3 .hdr .c{font-size:9.5px}
 .f3 .r .rl{grid-column:1/-1;text-align:left;color:var(--ink)}
 .f3 .hdr .rl,.f3 .axr .rl{display:none}
 .f4 .r{--lab:74px}
 .f2 .r{--lab:52px}
 .f1 .r{grid-template-columns:minmax(0,1fr) 64px;padding-block:12px;row-gap:0}
 .f1 .rl{grid-column:1/-1}
 .f1 .f1-hdr .rl,.f1 .axr .rl{display:none}
 .cta{flex-direction:column;align-items:flex-start;margin-top:72px}
 .cta h2{font-size:25px}
}
@media(max-width:380px){.hero h1{font-size:27px}.links{gap:16px}.text-link{min-width:104px}}
@media(prefers-reduced-motion:reduce){*,*::before,*::after{animation:none!important;transition-duration:.01s!important;transition-delay:0s!important}}

/* PermitForge figures. Model identities are also encoded by four persistent shapes. */
:root{--pf-sol61:#4B7069;--pf-sol56:#B76C43;--pf-opus:#AF6E97;--pf-sonnet:#7388BE;--pf-near:#B76C43;--pf-mid:#4B7069;--pf-far:#7388BE}
:root[data-theme="dark"]{--pf-sol61:#A7D1C5;--pf-sol56:#D29B7A;--pf-opus:#B88FA9;--pf-sonnet:#879FD7;--pf-near:#D29B7A;--pf-mid:#A7D1C5;--pf-far:#879FD7}
.pf-sol61{--model:var(--pf-sol61)}.pf-sol56{--model:var(--pf-sol56)}.pf-opus{--model:var(--pf-opus)}.pf-sonnet{--model:var(--pf-sonnet)}
.pf-chart{padding:24px 0 4px;border-top:1px solid var(--rule)}
.pf-chart .keys{gap:8px 18px;font-size:12px}.pf-chart .keys svg{flex:none;overflow:visible}
.pf-mark{fill:var(--model);stroke:var(--model);stroke-width:1.3}.pf-mark.pf-open{fill:var(--paper)}
.pf-line,.pf-ci{stroke:var(--model);stroke-width:1.5;fill:none}.pf-ci{stroke-width:2}
.pf-chart [tabindex]:focus-visible{outline:1px solid var(--ink);outline-offset:3px}
.pf-chart [data-v]:hover .pf-mark,.pf-chart [data-v]:focus .pf-mark{stroke:var(--ink)}
.pf-chart .hit{fill:transparent;stroke:transparent}
.pf-chart .pf-help,.pf-chart .pf-inspect{font-size:12px;color:var(--muted);line-height:1.65;margin:16px 0}
.pf-board-row{display:grid;grid-template-columns:170px minmax(0,1fr) 70px;gap:14px;align-items:center}
.pf-board-row>span{font-size:13px}.pf-values{font-family:var(--mono);text-align:right;line-height:24px}
.pf-baselines{padding:18px 20px;background:var(--soft);margin:28px 0 20px}.pf-baselines table{margin:0;font-size:13px}
.pf-task-row{display:grid;grid-template-columns:125px minmax(0,1fr);gap:18px;align-items:center;border-bottom:1px solid var(--rule);padding:4px 8px 4px 0}
.pf-task-row b{font:12px var(--mono)}.pf-task-row small{display:block;color:var(--muted);font-size:11px;line-height:1.5;margin-top:3px}
.pf-metric-row{display:grid;grid-template-columns:170px minmax(0,1fr);gap:20px;align-items:center;padding-right:10px;margin:8px 0}
.pf-metric-row small{display:block;font:10px/1.6 var(--mono);color:var(--muted);margin-top:7px}
.pf-dv-grid{display:grid;grid-template-columns:1fr 1fr;gap:24px}.pf-stage:last-child{grid-column:1/-1}
.pf-stage{border-bottom:1px solid var(--rule);min-width:0}.pf-stage b{display:block;font-size:14px;margin:8px 0}
.pf-stage p{font:11px/1.6 var(--mono);color:var(--muted)}.pf-neutral{fill:var(--muted)}.pf-stem{stroke:var(--faint);stroke-width:1}
.pf-rank-line{stroke:var(--ink);stroke-dasharray:4 4;stroke-width:1}.pf-rank-other{fill:var(--faint)}.pf-selected{fill:var(--paper);stroke:var(--ink);stroke-width:2}
.pf-equation{border-left:2px solid var(--ink);padding:4px 20px;margin:24px 0;font-family:var(--mono)}
.pf-equation p{font-size:12px;line-height:1.8;overflow-wrap:anywhere}.pf-equation strong{font-size:28px;font-weight:400}.pf-equation small{font-size:12px;color:var(--muted)}
.pf-search-grid{display:grid;grid-template-columns:1fr 1fr;gap:30px}.pf-search-panel{padding:0 8px;min-width:0}.pf-search-panel>p{font-size:13px;margin:0 0 14px}
.pf-reference{stroke:var(--faint);stroke-width:1;stroke-dasharray:3 5}.pf-search-panel svg{overflow:visible}
.pf-controls{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:14px}.pf-controls[hidden],.pf-scene[hidden],.pf-fallback[hidden]{display:none}
.pf-controls button{font:11px/1.5 var(--mono);border:1px solid var(--rule);padding:8px 10px;background:var(--paper);color:var(--ink);cursor:pointer;border-radius:0}
.pf-controls button[aria-pressed="true"]{background:var(--ink);color:var(--paper);border-color:var(--ink)}.pf-switch{display:flex;gap:0}
.pf-scene{height:420px;position:relative;background:var(--soft);border:1px solid var(--rule)}
.pf-scene canvas{display:block;width:100%;height:100%;touch-action:pan-y}.pf-scene canvas:focus-visible{outline:2px solid var(--ink);outline-offset:-3px}
.pf-scene-readout{position:absolute;left:16px;top:16px;max-width:80%;font:12px/1.7 var(--mono);pointer-events:none;padding:8px 10px;background:var(--paper)}
.pf-fallback{display:grid;grid-template-columns:1fr 1fr;gap:20px}.pf-static{width:100%;overflow:visible;background:var(--soft)}
.pf-building{fill:var(--rule);stroke:var(--muted);stroke-width:.7}.pf-stack{stroke:var(--ink);stroke-width:3}.pf-gep{stroke:var(--muted);stroke-dasharray:3 3;stroke-width:1}.pf-gep-cap{fill:var(--paper);stroke:var(--muted);stroke-width:1}
.pf-margin-near{fill:var(--pf-near);color:var(--pf-near)}.pf-margin-mid{fill:var(--pf-mid);color:var(--pf-mid)}.pf-margin-far{fill:var(--pf-far);color:var(--pf-far)}
.pf-cost{font:22px var(--mono);margin:10px 0}.pf-cost span{font:11px var(--mono);color:var(--muted)}
.pf-placeholder{border:1px dashed var(--faint);padding:20px 24px;margin:28px 0}.pf-placeholder h3{margin-top:0}.pf-placeholder p{margin-bottom:0}
.pf-data-link{font:11px var(--mono)}
@media(max-width:1100px){.pf-board-row{grid-template-columns:145px minmax(0,1fr) 66px;gap:10px}.pf-metric-row{grid-template-columns:145px minmax(0,1fr)}}
@media(max-width:600px){
 .pf-board-row{grid-template-columns:minmax(0,1fr) 62px;gap:0 12px}.pf-board-row>span:first-child{grid-column:1/-1;margin-top:16px}.pf-board-row>span:first-child:empty{display:none}
 .pf-task-row{grid-template-columns:76px minmax(0,1fr);gap:10px}.pf-task-row small{font-size:10px}
 .pf-metric-row{grid-template-columns:minmax(0,1fr);gap:8px;margin:24px 0}.pf-metric-row>span:empty{display:none}
 .pf-dv-grid,.pf-search-grid,.pf-fallback{grid-template-columns:1fr}.pf-search-grid{gap:30px}.pf-scene{height:340px}
 .pf-chart .keys{font-size:11px;gap:8px 12px}.pf-chart svg text{font-size:10px}.pf-baselines{padding:14px 12px}.pf-equation strong{font-size:24px}
}
.pf-controls select{font:11px var(--mono);background:var(--paper);color:var(--ink);border:1px solid var(--rule);padding:8px;max-width:100%;border-radius:0}
.pf-margin-key>span{color:var(--muted)}.pf-margin-key>span::before{content:"●";margin-right:5px}
.pf-margin-key>.pf-margin-near::before{color:var(--pf-near)}.pf-margin-key>.pf-margin-mid::before{color:var(--pf-mid)}.pf-margin-key>.pf-margin-far::before{color:var(--pf-far)}

.pf-astra{stroke:var(--ink);stroke-width:2;fill:none}

.prose table:has([data-stack]){min-width:760px}
.pf-metric-row{padding-left:6px}

/* PermitForge training figures: base (open circle) and trained (filled square), one ink. */
.pf-base{fill:var(--paper);stroke:var(--ink);stroke-width:1.5}.pf-trained{fill:var(--ink);stroke:var(--ink)}
.pf-pair{stroke:var(--faint);stroke-width:1.5}.pf-twice{fill:var(--paper);stroke:var(--muted);stroke-width:1.5}
.pf-band{stroke:var(--muted);stroke-width:1.5}

/* Chart headers (title and legend) stay in view while a tall chart scrolls. */
.pf-chart .ch-head{position:sticky;top:0;z-index:3;margin:0;padding:12px 0 14px;background:var(--paper)}
@media(max-width:860px){.pf-chart .ch-head{top:80px}}