/* The product performs: real interfaces, inspectable behavior, one strong signal color. */
:root{--p-canvas:#f3f3ef;--p-ink:#20211f;--p-muted:#585b55;--p-blue:#254f39;--p-evidence:#f4dc85;--p-sheet:#fff;--p-line:#c8ccc4;--p-dark:#18191b;--p-dark-layer:#222427;--p-light:#eff0f1;--p-orange:#ff4a1f;--p-font:"Helvetica Neue",Helvetica,Arial,sans-serif;--p-width:1600px;--p-margin:clamp(20px,3.2vw,52px);--p-ease:cubic-bezier(.23,1,.32,1)}
.portfolio-page{margin:0;background:var(--p-canvas);color:var(--p-ink);font:17px/1.55 var(--p-font);-webkit-font-smoothing:antialiased}
.portfolio-page *,.p-header *,.p-footer *{box-sizing:border-box}
.portfolio-page [hidden]{display:none!important}
.portfolio-page a,.p-header a,.p-footer a{color:inherit;text-underline-offset:5px;text-decoration-thickness:1px}
.portfolio-page a:hover{text-decoration-thickness:2px}
.portfolio-page :focus-visible,.p-header :focus-visible,.p-footer :focus-visible{outline:3px solid var(--p-orange);outline-offset:5px}
.portfolio-page h1,.portfolio-page h2,.portfolio-page h3{font-family:var(--p-font);font-weight:500;letter-spacing:-.045em;text-wrap:balance;line-height:1.05;color:inherit}
.portfolio-page h2{font-size:clamp(2rem,4.1vw,4rem);margin:0 0 24px}
.portfolio-page h3{font-size:1.5rem;margin:0 0 20px;line-height:1.2;letter-spacing:-.025em}
.portfolio-page p{margin:0 0 22px;text-wrap:pretty}
.portfolio-page img{display:block;max-width:100%;height:auto}
.portfolio-page button,.portfolio-page input{font:inherit}
.portfolio-page button{cursor:pointer}
.portfolio-page button:disabled{cursor:default}
.p-header,.p-footer{max-width:var(--p-width);margin:auto;padding:22px var(--p-margin);font:15px/1.5 var(--p-font);color:var(--p-ink);background:var(--p-canvas)}
.p-header{display:flex;align-items:center;justify-content:space-between;gap:24px;min-height:84px;position:relative;z-index:2}
.p-header a{display:inline-flex;align-items:center;min-height:44px;text-decoration:none}
.p-header .p-name,.p-footer .p-name{font-weight:600;font-size:19px;letter-spacing:-.04em;text-decoration:none}
.p-header nav,.p-footer nav{display:flex;gap:30px;flex-wrap:wrap}
.p-header nav a[aria-current=page]{text-decoration:underline;text-decoration-thickness:2px}
.p-footer{display:grid;grid-template-columns:1fr auto;gap:24px 40px;padding-top:40px;padding-bottom:35px}
.p-footer p{font-size:14px;margin:8px 0;color:var(--p-muted)}
.p-footer nav a{display:inline-flex;align-items:center;min-height:44px}
.p-footer small{grid-column:1/-1;color:var(--p-muted);font-size:13px}
.portfolio-page main{max-width:var(--p-width);margin:auto;padding:0 var(--p-margin)}
.p-skip{position:absolute;top:8px;left:16px;transform:translateY(-160%);background:var(--p-sheet);padding:12px;z-index:10}
.p-skip:focus{transform:none}
.p-opening{display:grid;grid-template-columns:1.15fr 1fr;gap:8%;padding:48px 0 56px;align-items:start}
.p-opening h1{font-size:clamp(3.7rem,7.8vw,8rem);line-height:.95;max-width:7ch;margin:0;letter-spacing:-.065em}
.p-introduction{display:grid;grid-template-columns:1fr;max-width:480px;gap:12px}
.p-introduction .p-role{font-size:clamp(1.8rem,3vw,2.7rem);line-height:1.1;letter-spacing:-.045em;margin:0}
.p-introduction>p:not(.p-role){font-size:16px;max-width:43ch;margin:0}
.p-contact,.portfolio-page a.p-solid,.p-solid{display:inline-flex;justify-content:center;align-items:center;padding:14px 22px;min-height:50px;width:fit-content;background:var(--p-orange);color:var(--p-dark);border:0;text-decoration:none;font-size:15px;font-weight:600;transition:transform 140ms var(--p-ease),background-color 180ms ease}
.p-introduction .p-contact{margin-top:4px}
.p-flagship{background:var(--p-dark);color:var(--p-light);padding:32px;margin-inline:calc(-1 * var(--p-margin))}
.p-flagship-heading{display:grid;grid-template-columns:1fr 1.25fr auto;align-items:end;gap:30px;margin-bottom:25px}
.p-flagship-heading h2{font-size:clamp(2rem,4vw,3.5rem);margin:0}
.p-flagship-heading p{font-size:15px;margin:0;max-width:42ch}
.p-light-link{font-size:15px;padding-block:10px}
.p-gallery{display:grid;grid-template-columns:minmax(0,1fr) 190px;gap:16px;align-items:stretch}
.p-screen-stage{background:var(--p-dark-layer);display:grid;min-width:0;align-items:center;overflow:clip}
.p-screen{margin:0;width:100%;min-width:0}
.p-screen img{width:100%;aspect-ratio:2056/1061;object-fit:contain;background:var(--p-dark-layer)}
.p-screen figcaption{font-size:13px;padding:12px 16px;margin:0}
.p-screen-selectors{display:grid;grid-template-rows:repeat(4,minmax(0,1fr));gap:12px}
.p-screen-selectors button{background:var(--p-dark-layer);color:var(--p-light);padding:8px;border:0;text-align:left;min-width:0;display:grid;grid-template-columns:65px 1fr;gap:12px;align-items:center;transition:background-color 180ms ease}
.p-screen-selectors button[aria-pressed=true]{background:var(--p-orange);color:var(--p-dark)}
.p-screen-selectors img{height:72px;width:65px;object-fit:cover;object-position:top left}
.p-screen-selectors span{font-size:13px;line-height:1.4}
.p-flagship-bottom{display:flex;justify-content:space-between;align-items:center;gap:32px;padding-top:24px}
.p-flagship-bottom p{font-size:15px;margin:0}
.p-order-story{display:grid;grid-template-columns:.8fr 1.2fr;gap:5%;margin-block:95px;align-items:center}
.p-order-copy>p{max-width:40ch}
.p-order-copy>p:first-of-type{font-size:22px;letter-spacing:-.02em}
.p-order-controls{display:flex;flex-wrap:wrap;gap:12px 20px;align-items:center;margin:28px 0 20px}
.p-order-controls label{display:flex;gap:10px;align-items:center;min-height:44px;font-size:15px;width:100%;cursor:pointer}
.p-order-controls input{accent-color:var(--p-blue);height:19px;width:19px;margin:0}
.p-order-controls>button:not(.p-solid){border:0;background:transparent;text-decoration:underline;text-underline-offset:5px;font-size:14px;padding:12px 0;color:var(--p-ink);min-height:44px}
.portfolio-page .p-small{font-size:13px;max-width:44ch;color:var(--p-muted)}
.p-order-stage{background:#e0e5d9;padding:24px;min-width:0;align-self:stretch;display:flex;flex-direction:column;justify-content:center}
.p-order-svg{width:100%;height:auto;overflow:visible}
.p-flow-paths{color:#71806a}
.p-flow-node rect{fill:var(--p-canvas)}
.p-flow-node text{fill:var(--p-ink);font:500 22px var(--p-font)}
.p-flow-node .p-svg-note{font-size:15px;font-weight:400}
.p-order-svg .p-svg-label{fill:var(--p-ink);font:14px var(--p-font)}
.p-flow-node.is-active rect{fill:var(--p-orange)}
.p-flow-packet{fill:var(--p-orange);opacity:0}
.p-order-result{min-height:145px;padding:24px 12px 0}
.p-order-result h3{font-size:23px;line-height:1.25;margin-bottom:12px}
.p-order-result p{font-size:15px;margin:0;max-width:58ch}
.p-ai-feature{display:grid;grid-template-columns:.9fr 1.1fr;gap:6%;align-items:center;margin:90px 0}
.p-ai-copy>p{max-width:48ch}
.p-ai-pipeline{display:flex;flex-wrap:wrap;gap:8px;margin:26px 0}
.p-ai-pipeline>div{flex:1 1 130px;padding:20px;background:#e0e5d9}
.p-ai-pipeline>div:last-child{background:var(--p-ink);color:var(--p-canvas)}
.p-ai-pipeline span{font-size:16px;font-weight:500}
.p-ai-pipeline p{font-size:13px;margin:12px 0 0;line-height:1.5}
.p-tutorial{margin:0;align-self:center;min-width:0}
.p-tutorial video{display:block;width:100%;height:auto;aspect-ratio:16/9;background:var(--p-dark)}
.p-tutorial figcaption{font-size:13px;margin-top:14px}
.p-other-work{display:grid;grid-template-columns:1.35fr .65fr;gap:24px;margin-block:90px}
.p-other-work>.p-section-heading{grid-column:1/-1}
.p-section-heading{display:flex;align-items:baseline;justify-content:space-between;gap:24px;margin-bottom:24px}
.p-section-heading h2{margin:0}
.p-section-heading>a{font-size:15px;min-height:44px;display:flex;align-items:center;white-space:nowrap}
.p-fc-summary{background:#e0e5d9;padding:38px}
.p-fc-summary h3,.p-mastery-summary h3{font-size:32px}
.p-fc-summary>p,.p-mastery-summary>p{max-width:51ch}
.p-mastery-summary{background:var(--p-sheet);padding:38px;display:flex;flex-direction:column;justify-content:end}
.p-document-flow{display:flex;gap:10px;margin-top:45px;flex-wrap:wrap}
.p-document-flow span{flex:1;padding:22px 14px;background:var(--p-canvas);font-size:15px;text-align:center;min-width:110px}
.p-document-flow span:last-child{background:var(--p-ink);color:var(--p-canvas)}
.p-evidence-section{margin-block:70px}
.p-inspector{background:var(--p-sheet);padding:36px}
.p-demo-intro{display:flex;gap:40px;align-items:end;justify-content:space-between;margin-bottom:30px}
.p-demo-intro h2{font-size:clamp(1.75rem,3vw,2.6rem);margin:0}
.p-demo-intro p{font-size:14px;margin:0}
.p-evidence-layout{display:grid;grid-template-columns:.85fr 1.15fr 1fr;gap:26px}
.p-question h3,.p-source h3,.p-answer h3{font-size:15px;letter-spacing:0;margin-bottom:20px}
.p-question fieldset{padding:0;border:0;margin:0 0 18px;min-width:0}
.p-question legend{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}
.p-question label{display:flex;align-items:start;gap:10px;padding:10px 0;font-size:14px;line-height:1.5;cursor:pointer;min-height:44px}
.p-question input{accent-color:var(--p-blue);width:17px;height:17px;flex-shrink:0;margin:3px 0 0}
.p-source{background:var(--p-canvas);padding:22px}
.p-source h3 span{display:block;font-weight:400;font-size:13px;margin-top:5px}
.p-source p{font-size:14px;line-height:1.7}
.p-source mark{color:var(--p-ink);background:var(--p-evidence);padding:2px 0;box-decoration-break:clone;-webkit-box-decoration-break:clone}
.p-source .is-unmatched mark{background:transparent}
.p-source .p-source-state{font-size:13px;margin:0}
.p-answer-text{font-size:20px;line-height:1.5;letter-spacing:-.02em;min-height:135px}
.p-answer-label{font-size:14px;font-weight:600;margin-bottom:6px!important}
.p-answer-reason{font-size:13px;margin:0!important}
.p-demo-caption{font-size:13px;margin:26px 0 0!important}
.p-section{margin:90px 0}
.p-writing-preview>.p-posts{display:grid;grid-template-columns:1fr 1fr;gap:12px 40px}
.p-post{padding:25px 0}
.p-post-meta{display:flex;justify-content:space-between;gap:16px;margin-bottom:15px;font-size:13px;color:var(--p-muted)}
.p-post h3{font-size:21px;line-height:1.3;letter-spacing:-.025em;margin:0 0 12px;text-wrap:pretty}
.p-post h3 a{text-decoration:none}
.p-post h3 a:hover{text-decoration:underline}
.p-post p{font-size:15px;line-height:1.6;max-width:65ch;margin:0}
.p-contact-section{display:grid;grid-template-columns:1.1fr 1fr;gap:7%;align-items:end;background:var(--p-orange);padding:60px var(--p-margin);margin-inline:calc(-1 * var(--p-margin));color:var(--p-dark)}
.p-contact-section h2{font-size:clamp(2.5rem,5vw,5rem);margin:0}
.p-contact-section p{max-width:44ch}
.p-contact-section a{display:inline-flex;min-height:44px;align-items:center;font-weight:500}
.p-page-heading{padding:60px 0;max-width:1000px}
.p-page-heading h1{font-size:clamp(3rem,7vw,6.5rem);margin:14px 0 24px;letter-spacing:-.055em}
.p-page-heading>p{font-size:clamp(1.2rem,2.1vw,1.6rem);max-width:53ch;margin:0}
.p-inline-links{display:flex;gap:20px;align-items:center;flex-wrap:wrap;margin:25px 0}
.p-inline-links a{min-height:44px;display:inline-flex;align-items:center;font-size:15px}
.p-case-intro{display:grid;grid-template-columns:1fr 1fr;gap:8%;padding-top:70px}
.p-case-intro h2{font-size:clamp(2rem,3.5vw,3rem)}
.p-case-intro p{max-width:52ch}
.p-prose{max-width:750px;margin:60px auto 80px}
.p-prose h2{font-size:32px;line-height:1.15;margin:42px 0 22px}
.p-prose p,.p-prose li{font-size:17px;line-height:1.75}
.p-prose li{padding-bottom:10px}
.p-prose ul{padding-left:24px}
.p-work-feature{display:grid;grid-template-columns:.65fr 1.35fr;gap:5%;align-items:center;background:var(--p-dark);color:var(--p-light);padding:35px;margin-bottom:50px}
.p-work-item{display:grid;grid-template-columns:.8fr 1.2fr;gap:5%;padding:35px;margin-bottom:12px;background:#e0e5d9}
.p-work-item:nth-child(2){background:var(--p-sheet)}
.p-work-item:nth-child(3){background:#e8e6dc}
.p-work-item h3{font-size:34px}
.p-work-item h3 a{text-decoration:none}
.p-work-item p{max-width:55ch}
.p-work-list{margin-bottom:70px}
.p-about-layout{display:grid;grid-template-columns:.4fr 1fr;gap:8%}
.p-about-layout .p-prose{margin-top:0}
.p-about-layout .p-prose h2:first-child{margin-top:0}
.p-profile-links{display:flex;gap:20px;flex-wrap:wrap}
.p-profile-links a{min-height:44px;display:flex;align-items:center}
.p-fc-case{padding:45px;background:#e0e5d9}
.p-fc-case>.p-document-flow{margin:30px 0}
.p-fc-case>p{max-width:65ch}
.p-archive-note{max-width:65ch}
.portfolio-page main>.p-posts{max-width:1000px;margin:30px 0 70px}
@media(hover:hover) and (pointer:fine){.p-solid:hover,.p-contact:hover{transform:translateY(-2px)}.p-screen-selectors button:hover{background:var(--p-light);color:var(--p-dark)}.p-screen-selectors button[aria-pressed=true]:hover{background:var(--p-orange)}}
@media(prefers-reduced-motion:no-preference){.p-screen-stage{animation:p-picture-arrive 800ms var(--p-ease) both}@keyframes p-picture-arrive{from{transform:translateY(18px) scale(.985);opacity:.7}to{transform:none;opacity:1}}}
/* Reading pages inherit calm surfaces; existing dark educational canvases retain their palette. */
.library-page{background:var(--p-canvas)!important;background-image:none!important;color:var(--p-ink);font-family:var(--p-font);--ink:var(--p-canvas);--ink2:#e3ebf0;--panel:#fff;--panel2:#f3f7fa;--text:var(--p-ink);--muted:var(--p-muted);--faint:#52616a;--line:var(--p-line);--line2:#92a9b7;--accent:var(--p-blue);--accent2:var(--p-blue);--accent-deep:#173a58;--font-body:var(--p-font);--font-display:var(--p-font);--f-foundational:#1c654b;--f-intermediate:#225a83;--f-advanced:#825b16;--f-expert:#9c3451}
.library-page::before,.library-page .ln-hero-art,.library-page #hero-canvas{display:none!important}
.library-page .topbar,.library-page .ln-topbar{position:relative;top:auto;background:var(--p-canvas);backdrop-filter:none;box-shadow:none}
.library-page .p-header{position:relative}
.library-page .p-footer{margin-top:40px}
.library-page h1,.library-page h2,.library-page h3{font-family:var(--p-font)}
.library-page .grad,.library-page .ln-grad,.library-page .jy-grad{background:none;color:var(--p-ink);-webkit-text-fill-color:var(--p-ink)}
.library-page .ln-hero{min-height:auto;padding-block:60px}
.library-page .ln-hero h1{font-size:clamp(2.4rem,5vw,4.3rem)}
.library-page .kicker,.library-page .ln-eyebrow,.library-page .ln-topnav a,.library-page .crumbs,.library-page .updated{font-family:var(--p-font);text-transform:none;letter-spacing:0;font-size:13px}
.library-page .ln-eyebrow::before{display:none}
.library-page .prose p,.library-page .ans,.library-page .qa,.library-page .ln-prose,.library-page .ln-prose p,.library-page .g-row,.library-page .qcard-a{color:var(--p-ink)}
.library-page .ln-reveal,.library-page .reveal-init{opacity:1!important;transform:none!important;transition:none!important;will-change:auto!important}
.library-page .ln{background:none}
.library-page .ln-cue{display:none}
.library-page .qa,.library-page .qcard,.library-page .ln-callout{background:var(--p-sheet);box-shadow:none;border-radius:6px}
.library-page .ln-figure,.library-page .ln-toy,.library-page .mathlab-canvas,.library-page .jy-panel{--ink:#0a0d14;--ink2:#0e121c;--panel:#141a26;--panel2:#19202e;--text:#e8ebf2;--muted:#9aa4ba;--faint:#9aa4ba;--line:#26303f;--line2:#313d50;--accent:#7c8cff;--accent2:#3ad6c5;--accent-deep:#5566e6;--f-foundational:#34d399;--f-intermediate:#38bdf8;--f-advanced:#fbbf24;--f-expert:#fb7185;background:var(--ink);color:var(--text)}
.library-page :focus-visible{outline:3px solid var(--p-blue);outline-offset:4px}
@media(max-width:1000px){.p-gallery{grid-template-columns:minmax(0,1fr) 145px}.p-screen-selectors button{grid-template-columns:48px 1fr;gap:7px}.p-screen-selectors img{width:48px;height:55px}.p-flagship-heading{grid-template-columns:1fr 1fr}.p-flagship-heading>a{grid-column:2}.p-order-story{grid-template-columns:1fr 1.2fr;gap:25px}.p-order-stage{padding:12px}.p-order-svg .p-svg-note{font-size:16px}.p-order-copy h2{font-size:40px}.p-ai-feature{gap:30px}.p-ai-pipeline{display:block}.p-ai-pipeline>div{padding:14px;margin-bottom:6px}.p-ai-pipeline p{margin:4px 0 0}.p-other-work{grid-template-columns:1fr 1fr}.p-fc-summary,.p-mastery-summary{padding:25px}.p-footer{grid-template-columns:1fr}.p-evidence-layout{grid-template-columns:1fr 1fr}.p-question{grid-column:1/-1}.p-question fieldset{display:flex;gap:25px;margin:0}.p-question .p-source-toggle{padding-top:0}.p-opening h1{font-size:clamp(3.7rem,9vw,6rem)}}
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