/* PlansFlow notebook. Scoped to the blog; shared site styles stay untouched. */
@font-face{font-family:"Blog Plex";font-weight:400;font-style:normal;font-display:swap;src:url("assets/fonts/plex/IBMPlexSans-400.woff2") format("woff2")}
@font-face{font-family:"Blog Mono";font-weight:400;font-style:normal;font-display:swap;src:url("assets/fonts/plex/IBMPlexMono-400.woff2") format("woff2")}
.bl-page{font-family:"Blog Plex",sans-serif}
.bl-page .sw{--sw-sans:"Blog Plex",sans-serif;--sw-mono:"Blog Mono",monospace}
.bl-page .pf-nav,.bl-page .pf-footer{font-family:"Blog Plex",sans-serif}
.bl-page .pf-theme-opt,.bl-page .pf-mono-label{font-family:"Blog Mono",monospace}
.bl-page a,.bl-page button{touch-action:manipulation}
.bl-page a:focus-visible,.bl-page button:focus-visible{outline:2px solid var(--ink);outline-offset:6px}
.bl-page [id]{scroll-margin-top:110px}
.bl-skip{position:fixed;top:8px;left:24px;z-index:9999;padding:12px 20px;background:var(--ink);color:var(--page-a);transform:translateY(-200%)}
.bl-skip:focus{transform:translateY(0)}
.bl-main:focus,.bl-reading:focus{outline:none}
.bl-kicker,.bl-section-bar,.bl-meta,.bl-art figcaption,.bl-breadcrumb,.bl-read,.bl-index-link,.bl-continuation,.bl-reading-rail{font-family:var(--sw-mono);font-size:12px;line-height:1.5;letter-spacing:.025em}
.bl-kicker,.bl-section-bar,.bl-meta,.bl-art figcaption,.bl-read{text-transform:uppercase}
.bl-hero{padding-top:140px;padding-bottom:58px}
.bl-hero>.bl-kicker{display:flex;justify-content:space-between;color:var(--sw-muted)}
.bl-hero>.bl-kicker>span:first-child{color:var(--sw-ink)}
.bl-hero-grid{display:grid;grid-template-columns:8fr 4fr;gap:48px;align-items:end;margin-top:32px}
.sw .bl-hero h1{font-size:clamp(64px,7.7vw,116px);line-height:.99;letter-spacing:-.067em;text-wrap:initial}
.bl-well{position:relative;white-space:nowrap}
.bl-dot{color:var(--sw-accent)}
.sw .bl-intro p{font-size:17px;line-height:1.65;max-width:37ch;color:var(--sw-muted)}
.bl-index-link{display:flex;justify-content:space-between;align-items:center;min-height:44px;max-width:37ch;margin-top:24px;border-bottom:1px solid var(--sw-line)}
.bl-index-link span{font-size:22px;transition:transform .2s var(--sw-ease)}
.bl-index-link:hover span{transform:translateY(4px)}
.bl-section-bar{display:flex;align-items:center;justify-content:space-between;gap:24px;margin-bottom:20px;color:var(--sw-muted)}
.bl-feature{background:var(--sw-accent);color:var(--sw-on-accent)}
.bl-feature>a{display:grid;grid-template-columns:5fr 7fr;align-items:center;gap:24px;padding:40px}
.bl-feature-copy{display:flex;flex-direction:column;align-items:start;min-width:0}
.bl-meta{display:flex;align-items:center;gap:16px;flex-wrap:wrap;color:var(--sw-muted);font-size:12px}
.bl-meta>span:first-child{color:var(--sw-ink)}
.bl-feature .bl-meta,.bl-feature .bl-meta>span:first-child{color:inherit}
.bl-feature .bl-meta>span:last-child{display:none}
.sw .bl-feature h2{font-size:clamp(45px,4.8vw,72px);line-height:1.03;letter-spacing:-.05em;margin:24px 0}
.sw .bl-feature-copy>p{font-size:17px;line-height:1.55;max-width:36ch}
.bl-read{display:flex;align-items:center;justify-content:space-between;gap:24px;min-height:44px;margin-top:24px;font-size:11px}
.bl-read>span{display:grid;place-items:center;border:1px solid currentColor;width:40px;height:40px;border-radius:50%;font-size:21px;transition:transform .25s var(--sw-ease)}
a:hover .bl-read>span,a:focus-visible .bl-read>span{transform:translate(3px,-3px)}
.bl-art{margin:0;min-width:0;--pfs-accent:var(--sw-accent);--pfs-x:0;--pfs-labels:1;--pfs-mono:var(--sw-mono)}
.bl-diagram{width:100%;height:auto;display:block;overflow:visible}
.diagram-label{fill:currentColor;stroke:none;font-family:var(--sw-mono);font-size:11px;letter-spacing:.04em}
.bl-art figcaption{display:flex;gap:20px;justify-content:space-between;font-size:11px;line-height:1.5;letter-spacing:0;text-transform:none;padding-top:12px;color:var(--sw-muted)}
.bl-art figcaption>span:first-child{white-space:nowrap}
.bl-art figcaption>span:last-child{max-width:43ch}
.bl-feature .bl-art figcaption{color:inherit}
.bl-feature .bl-art{align-self:center;--pfs-accent:var(--sw-on-accent)}
.bl-feature .bl-art figcaption>span:last-child{max-width:40ch}
.diagram-node{fill:var(--sw-paper)}
.diagram-move,.diagram-point,.diagram-sheet{transform-box:fill-box;transform-origin:center;transition:transform .5s var(--sw-ease)}
a:hover .diagram-move,a:focus-visible .diagram-move{transform:translateX(8px)}
a:hover .diagram-point,a:focus-visible .diagram-point{transform:scale(1.45)}
a:hover .diagram-sheet:last-of-type,a:focus-visible .diagram-sheet:last-of-type{transform:translateX(8px)}
a:hover .bl-art,a:focus-visible .bl-art{--pfs-x:1}
.bl-notes{padding-top:96px;padding-bottom:64px}
.bl-notes>.bl-section-bar{border-top:1px solid var(--sw-line);padding-top:24px;margin-bottom:40px}
.sw .bl-section-bar h2{font-family:var(--sw-sans);font-size:32px;letter-spacing:-.035em;text-transform:none;color:var(--sw-ink)}
.bl-pair{display:grid;grid-template-columns:1fr 1fr;gap:48px}
.bl-entry{min-width:0}
.bl-entry-link{display:block}
.bl-entry--feature .bl-art{background:var(--surface);padding:20px 24px 16px}
.bl-entry--feature:nth-child(2) .bl-art{background:var(--ink);color:var(--page-a);--sw-muted:var(--page-a)}
.bl-entry--feature .bl-art figcaption{min-height:39px}
.bl-entry--feature .bl-entry-copy{padding-top:28px}
.sw .bl-entry h2{font-size:clamp(28px,2.9vw,43px);line-height:1.14;letter-spacing:-.035em;margin:16px 0}
.sw .bl-entry-copy>p{color:var(--sw-muted);font-size:17px;line-height:1.6;max-width:48ch}
.bl-entry .bl-read{justify-content:space-between;margin-top:16px}
.bl-entry .bl-read>span{border-color:var(--sw-line)}
.bl-entry-link:hover h2,.bl-entry-link:focus-visible h2{text-decoration:underline;text-decoration-thickness:1px;text-underline-offset:7px}
.bl-list{margin-top:64px}
.bl-entry--row{padding:32px 0;border-top:1px solid var(--sw-line)}
.bl-entry--row .bl-entry-link{display:grid;grid-template-columns:4fr 8fr;gap:64px;align-items:center}
.bl-entry--row .bl-art{max-width:340px}
.bl-entry--row .bl-art figcaption{display:none}
.bl-entry--row .bl-entry-copy{position:relative;padding-right:100px}
.bl-entry--row .bl-read{position:absolute;right:0;top:50%;margin:0;font-size:0}
.bl-entry--row .bl-read>span{width:48px;height:48px;font-size:24px}
.bl-entry--row .bl-meta{margin-bottom:16px}
.bl-entry--row .bl-diagram{max-height:230px}
.bl-continuation{display:flex;align-items:center;gap:24px;border-top:1px solid var(--sw-line);padding-top:32px;margin-top:24px}
.bl-continuation>span{font-size:28px;white-space:nowrap}
.sw .bl-continuation p{font-size:14px;color:var(--sw-muted)}
.bl-continuation a{margin-left:auto;white-space:nowrap;min-height:44px;display:flex;align-items:center}
.bl-closing{padding:64px 0;background:var(--sw-surface)}
.bl-closing>.sw-shell{display:flex;justify-content:space-between;align-items:center;gap:40px}
.sw .bl-closing h2{font-size:clamp(36px,4vw,60px);line-height:1.12;margin-top:20px}
.sw .bl-closing p{font-size:17px;color:var(--sw-muted);margin-top:16px}
.bl-open{display:flex;align-items:center;justify-content:space-between;gap:48px;padding:24px;background:var(--sw-accent);color:var(--sw-on-accent)!important;white-space:nowrap}
.bl-open span{font-size:24px;transition:transform .2s var(--sw-ease)}
.bl-open:hover span{transform:translate(3px,-3px)}
/* The reading pages retain the same voice, with a quieter reading measure. */
.bl-reading{padding:136px 0 72px}
.bl-breadcrumb{display:flex;gap:16px;align-items:center;color:var(--sw-muted)}
.bl-breadcrumb a{min-height:44px;display:flex;align-items:center;text-decoration:underline;text-underline-offset:4px}
.bl-reading-head{padding-top:40px;padding-bottom:56px;max-width:1100px}
.sw .bl-reading-head h1{font-size:clamp(48px,7.2vw,104px);line-height:1.05;letter-spacing:-.055em;margin-top:24px;max-width:16ch}
.bl-reading-grid{display:grid;grid-template-columns:2fr 7fr 3fr;gap:32px}
.bl-reading-rail{display:flex;flex-direction:column;align-items:start;gap:24px;padding-top:8px}
.bl-reading-rail a{min-height:44px;display:flex;align-items:center}
.sw .bl-reading-body>p{font-size:21px;line-height:1.7;max-width:60ch;margin-bottom:28px}
.bl-reading-body .bl-art{margin-top:48px;padding:24px;background:var(--sw-surface)}
.bl-reading-body .bl-art--lost-in-the-middle{background:var(--sw-accent);color:var(--sw-on-accent);--sw-muted:var(--sw-on-accent)}
.bl-next{border-top:1px solid var(--sw-line);margin-top:80px;padding-top:32px}
.bl-next>a:not(.bl-all){display:flex;justify-content:space-between;align-items:center;gap:32px;font-size:clamp(28px,4vw,56px);letter-spacing:-.035em;line-height:1.2;margin-top:24px}
.bl-next>a:not(.bl-all):hover{text-decoration:underline;text-decoration-thickness:1px;text-underline-offset:8px}
.bl-all{display:inline-flex;align-items:center;min-height:44px;margin-top:24px;font-size:14px}
@media(min-width:1000px){.bl-reading-rail{position:sticky;top:112px;align-self:start}}
@media(max-width:1000px){
 .bl-hero-grid{grid-template-columns:3fr 2fr;gap:24px}.sw .bl-hero h1{font-size:8vw}.sw .bl-intro p{font-size:15px}
 .bl-feature>a{padding:28px;gap:16px}.bl-feature .bl-meta{gap:8px}.bl-feature .bl-art figcaption{font-size:11px}
 .bl-pair{gap:32px}.bl-entry--row .bl-entry-link{gap:32px}.bl-reading-grid{grid-template-columns:1fr 4fr}.bl-reading-body{max-width:720px}
}
@media(max-width:700px){
 .bl-page .sw{--sw-pad:24px}.bl-hero{padding-top:116px;padding-bottom:40px}.bl-kicker{font-size:10px}.bl-hero>.bl-kicker>span:last-child{display:none}
 .bl-hero-grid{display:block;margin-top:24px}.sw .bl-hero h1{font-size:clamp(48px,11.7vw,80px)}.bl-intro{margin-top:24px}.sw .bl-intro p{max-width:46ch;font-size:16px}.bl-index-link{max-width:none;margin-top:16px}
 .bl-feature>a{grid-template-columns:1fr;padding:24px;gap:16px}.sw .bl-feature h2{font-size:52px;margin:24px 0 20px}.sw .bl-feature-copy>p{font-size:16px;max-width:38ch}.bl-feature .bl-read{margin-top:16px;width:100%}.bl-feature .bl-art figcaption{font-size:11px}.bl-feature .bl-art{border-top:1px solid rgb(23 20 15 / .25);padding-top:12px}
 .bl-section-bar{font-size:10px}.bl-notes{padding-top:64px;padding-bottom:48px}.bl-notes>.bl-section-bar{align-items:start;gap:20px;margin-bottom:32px}.bl-notes>.bl-section-bar>span{max-width:16ch;text-align:right;font-size:9px}.sw .bl-section-bar h2{font-size:28px}
 .bl-pair{grid-template-columns:1fr;gap:48px}.bl-entry--feature .bl-art{padding:16px}.bl-entry--feature .bl-entry-copy{padding-top:24px}.sw .bl-entry h2{font-size:32px}.sw .bl-entry-copy>p{font-size:16px}
 .bl-list{margin-top:40px}.bl-entry--row .bl-entry-link{grid-template-columns:1fr;gap:8px}.bl-entry--row .bl-art{max-width:none;padding:0 24px}.bl-entry--row .bl-diagram{max-height:190px}.bl-entry--row .bl-entry-copy{padding:0}.bl-entry--row .bl-read{position:static;font-size:11px;margin-top:16px}.bl-entry--row .bl-read>span{width:40px;height:40px;font-size:21px}
 .bl-meta{gap:10px;font-size:11px}.bl-continuation{flex-wrap:wrap;gap:16px}.sw .bl-continuation p{flex:1;min-width:170px}.bl-continuation a{margin:0 0 0 60px}
 .bl-closing{padding:48px 0}.bl-closing>.sw-shell{display:block}.bl-open{margin-top:32px}.sw .bl-closing h2{font-size:40px}
 .bl-reading{padding-top:112px}.bl-reading-head{padding-top:24px;padding-bottom:32px}.sw .bl-reading-head h1{font-size:clamp(43px,10vw,68px);overflow-wrap:break-word}
 .bl-reading-grid{display:block}.bl-reading-rail{display:none}.sw .bl-reading-body>p{font-size:19px;line-height:1.65}.bl-reading-body .bl-art{padding:12px;margin-top:32px}.bl-art figcaption{font-size:11px;gap:12px}.bl-next{margin-top:56px}
}
@media(prefers-reduced-motion:no-preference){
 .bl-hero-grid{animation:bl-enter .7s var(--sw-ease) both}.bl-feature-section{animation:bl-enter .8s var(--sw-ease) .08s both}.bl-reading-head{animation:bl-enter .55s var(--sw-ease) both}
 .bl-arrive{animation:bl-enter .65s var(--sw-ease) both}
 @keyframes bl-enter{from{opacity:.25;transform:translateY(18px)}to{opacity:1;transform:translateY(0)}}
 @view-transition{navigation:auto}
 ::view-transition-old(root){animation:bl-out .15s ease both}::view-transition-new(root){animation:bl-in .24s ease both}
 @keyframes bl-out{to{opacity:0}}@keyframes bl-in{from{opacity:0}}
}
@media(prefers-reduced-motion:reduce){.bl-page *,.bl-page *::before,.bl-page *::after{animation:none!important;transition:none!important;scroll-behavior:auto!important}.bl-art{--pfs-dur:0ms}}
@media print{.pf-header,.pf-bg,.pf-footer,.bl-skip,.bl-next,.bl-reading-rail{display:none}.bl-reading{padding:0}.bl-reading-grid{display:block}.bl-reading-body{max-width:none}.bl-art{break-inside:avoid}}

.bl-reading-body .bl-art--moving-things-to-think{--pfs-x:1}

.bl-feature h2{max-width:7.8ch}
.diagram-route{opacity:.65;transition:opacity .25s var(--sw-ease)}
a:hover .diagram-route,a:focus-visible .diagram-route{opacity:1}
@media(prefers-reduced-motion:reduce){.diagram-route{transition:none}}

/* Long-form notes (2026-09-26). The reading page keeps its voice: the same
   measure and size for prose, section headings a step up from it, a rail
   that lists the sections on wide screens, the takeaways on the surface the
   figures use, and the references set small. Emphasis is Plex Medium, not a
   synthesised italic (no italic face is shipped). */
.sw .bl-reading-body>h2{font-size:clamp(28px,2.6vw,38px);line-height:1.15;letter-spacing:-.04em;max-width:24ch;margin:72px 0 24px}
.bl-reading-body .bl-art{margin-bottom:24px}
.bl-reading-body em{font-family:"IBM Plex Sans",var(--sw-sans);font-style:normal;font-weight:500}
.bl-reading-body :is(p,li) a{text-decoration:underline;text-decoration-thickness:1px;text-underline-offset:5px;text-decoration-color:rgb(var(--tint-rgb) / .35);transition:text-decoration-color .2s var(--sw-ease)}
.bl-reading-body a:hover{text-decoration-color:var(--sw-accent)}
.bl-points{margin:0 0 28px;padding:0;list-style:none}
.bl-points li{position:relative;max-width:calc(64ch + 32px);padding-left:32px;margin-bottom:16px;font-size:19px;line-height:1.65}
.bl-points li::before{content:"—";position:absolute;left:0;top:0;color:var(--sw-muted)}
.bl-takeaways{margin:0;padding:32px 32px 8px;list-style:none;background:var(--sw-surface)}
.bl-takeaways li{display:grid;grid-template-columns:48px minmax(0,1fr);gap:8px;padding-bottom:24px}
.bl-takeaways .bl-kicker{padding-top:6px;color:var(--sw-muted)}
.sw .bl-takeaways p{font-size:19px;line-height:1.6;max-width:56ch}
.bl-refs{margin-top:64px;padding-top:20px;border-top:1px solid var(--sw-line)}
.sw .bl-refs h2{font-family:var(--sw-mono);font-size:12px;line-height:1.5;letter-spacing:.025em;text-transform:uppercase;color:var(--sw-muted)}
.bl-refs ol{margin:20px 0 0;padding:0;list-style:none}
.bl-refs li{max-width:80ch;margin-bottom:12px;padding-left:24px;text-indent:-24px;font-size:14px;line-height:1.6;color:var(--sw-muted);overflow-wrap:anywhere}
.bl-refs a{color:inherit;text-decoration:underline;text-underline-offset:3px}
.bl-toc{margin-top:16px;padding-top:20px;border-top:1px solid var(--sw-line)}
.bl-toc ol{margin:14px 0 0;padding:0;list-style:none}
.bl-toc li{margin-bottom:10px}
.bl-toc a{display:block;min-height:0;font-family:var(--sw-sans);font-size:14px;line-height:1.4;letter-spacing:0;color:var(--sw-muted)}
.bl-toc a:hover{color:var(--sw-ink);text-decoration:underline;text-underline-offset:3px}
.bl-reading-body h2[id]{scroll-margin-top:110px}
.diagram-arrow{stroke:var(--sw-paper)}
@media(max-width:1000px){.bl-toc{display:none}}
@media(max-width:700px){
 .sw .bl-reading-body>h2{font-size:28px;margin:56px 0 20px}
 .bl-points li{font-size:17px;padding-left:28px}
 .bl-takeaways{padding:20px 16px 4px}.bl-takeaways li{grid-template-columns:36px minmax(0,1fr);padding-bottom:18px}.sw .bl-takeaways p{font-size:17px}
 .bl-refs{margin-top:48px}.bl-refs li{font-size:13px}
}
@media(prefers-reduced-motion:reduce){.bl-reading-body a{transition:none}}