/* Case study family: shared base for every case study page.
   Taken from the JPMC (ORXe 3.0) case study so all case studies share one system:
   warm paper ground, Schibsted Grotesk / Instrument Sans / Geist Mono, sticky chapter bar,
   mono chapter labels, headline cards, research blocks and problem rows.
   Each page sets its own --accent / --accent-50 (and optionally --accent-line) after this file. */
:root{
  --bg:#fbfaf7; --paper:#ffffff; --ink:#15171c; --ink-2:#3c414b; --muted:#6b707b; --line:#e7e3da; --line-2:#efece5; --tint:#f4f1ea;
  --accent:#0b5fa5; --accent-50:#eaf2fb; --accent-line:var(--accent); --green:#137a3d; --green-50:#e9f5ee; --amber:#8a5a00; --amber-50:#fdf3dd; --red:#b42318;
  --font-display:"Schibsted Grotesk","Helvetica Neue",Arial,sans-serif;
  --font-body:"Instrument Sans","Helvetica Neue",Arial,sans-serif;
  --font-mono:"Geist Mono",ui-monospace,"SF Mono",Menlo,monospace;
  --wrap:1120px; --text:700px; --gutter:24px;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
@media (prefers-reduced-motion:reduce){html{scroll-behavior:auto}*{transition:none!important}}
body{margin:0;background:var(--bg);color:var(--ink);font:400 17px/1.6 var(--font-body);-webkit-font-smoothing:antialiased}
img{display:block;max-width:100%;height:auto}
a{color:var(--accent)}
h1,h2,h3,h4{font-family:var(--font-display);margin:0;letter-spacing:-.02em;line-height:1.15;color:var(--ink);text-wrap:balance}
p{margin:0}
.wrap{max-width:var(--wrap);margin:0 auto;padding:0 var(--gutter)}
.text{max-width:var(--text)}
.s-mono{font-family:var(--font-mono);font-size:12px;letter-spacing:.06em;text-transform:uppercase;color:var(--muted)}
.skip{position:absolute;left:-999px;top:8px;background:var(--ink);color:#fff;padding:8px 12px;border-radius:8px;z-index:50}
.skip:focus{left:8px}
:focus-visible{outline:2px solid var(--accent);outline-offset:3px;border-radius:4px}

/* Top bar */
.s-top{position:sticky;top:0;z-index:20;background:rgb(251 250 247/.9);-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);border-bottom:1px solid var(--line)}
.top-in{display:flex;align-items:center;gap:20px;height:56px}
.brand{font-family:var(--font-display);font-weight:700;text-decoration:none;color:var(--ink);white-space:nowrap}
.toc{display:flex;gap:4px;margin-left:auto;overflow-x:auto;scrollbar-width:none}
.toc::-webkit-scrollbar{display:none}
.toc a{flex:none;font-size:14px;color:var(--muted);text-decoration:none;padding:6px 10px;border-radius:999px}
.toc a:hover{color:var(--ink);background:var(--tint)}
.toc a.s-is-on{color:var(--ink);background:var(--tint);font-weight:600}
.progress{position:absolute;left:0;bottom:-1px;height:2px;background:var(--accent-line);width:0}

/* Hero */
.s-hero{padding:64px 0 40px}
.s-hero .s-mono{margin-bottom:18px}
.s-hero h1{font-size:clamp(36px,5.4vw,62px);font-weight:800;letter-spacing:-.035em;max-width:16ch}
.s-hero .s-lede{font-size:clamp(18px,1.6vw,21px);color:var(--ink-2);margin-top:20px;max-width:640px}
.meta{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:0;margin-top:40px;border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.meta div{padding:16px 16px 16px 0}
.meta div+div{padding-left:16px;border-left:1px solid var(--line)}
.meta dt{font-family:var(--font-mono);font-size:11px;letter-spacing:.06em;text-transform:uppercase;color:var(--muted);margin-bottom:4px}
.meta dd{margin:0;font-size:15px;font-weight:500}
.hero-img{margin-top:40px;border-radius:20px;overflow:hidden;border:1px solid var(--line);background:var(--paper)}

/* Headlines */
.headlines{margin:8px auto 0;display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:16px}
.s-hl{background:var(--paper);border:1px solid var(--line);border-radius:16px;padding:20px}
.s-hl .s-mono{margin-bottom:8px}
.s-hl p{font-size:16px;color:var(--ink-2)}
.s-hl p b{color:var(--ink)}
.stats{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:16px;margin-top:16px}
.stat{border-radius:16px;padding:20px;background:var(--paper);border:1px solid var(--line)}
.stat b{display:block;font-family:var(--font-display);font-size:clamp(30px,3.4vw,42px);font-weight:800;letter-spacing:-.03em;line-height:1;color:var(--ink)}
.stat b.up{color:var(--green)}
.stat span{display:block;margin-top:8px;font-size:14px;color:var(--muted)}
.note{font-size:13px;color:var(--muted);margin-top:12px}

/* Chapters */
.ch{padding:96px 0 0}
.ch-head{display:grid;grid-template-columns:minmax(0,1fr);gap:12px;margin-bottom:32px}
.ch-n{font-family:var(--font-mono);font-size:13px;color:var(--accent);letter-spacing:.04em;white-space:nowrap}
.ch-head h2{font-size:clamp(28px,3.4vw,40px);font-weight:800}
.ch-head p{margin-top:14px;font-size:18px;color:var(--ink-2)}
.ch-body{margin-left:0}
.ch-body > * + *{margin-top:24px}
.lead-in{font-size:18px;color:var(--ink-2);max-width:var(--text)}

/* Two needs */
.s-needs{display:grid;grid-template-columns:1fr 1fr;gap:16px}
.need{border-radius:16px;padding:22px;border:1px solid var(--line);background:var(--paper)}
.need h3{font-size:20px;margin-top:6px}
.need p{margin-top:8px;color:var(--ink-2);font-size:16px}

/* Steps (process) */
.s-steps{display:grid;grid-template-columns:repeat(5,minmax(0,1fr));gap:0;counter-reset:s;border:1px solid var(--line);border-radius:16px;background:var(--paper);overflow:hidden}
.step{padding:18px 16px;position:relative}
.step + .step{border-left:1px solid var(--line)}
.step b{display:block;font-size:15px}
.step span{display:block;font-size:13px;color:var(--muted);margin-top:4px;line-height:1.45}
.step i{font-style:normal;font-family:var(--font-mono);font-size:11px;color:var(--accent);display:block;margin-bottom:8px;letter-spacing:.06em}

/* Methods */
.methods{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:16px}
.method{border:1px solid var(--line);border-radius:16px;padding:20px;background:var(--paper)}
.method .big{font-family:var(--font-display);font-size:32px;font-weight:800;letter-spacing:-.03em;line-height:1}
.method h3{font-size:17px;margin-top:10px}
.method p{font-size:15px;color:var(--ink-2);margin-top:6px}
.small{font-size:14px;color:var(--muted)}

/* Persona */
.s-persona{display:grid;grid-template-columns:180px minmax(0,1fr);gap:28px;align-items:start;border:1px solid var(--line);border-radius:20px;padding:24px;background:var(--paper)}
.s-persona img{border-radius:14px;aspect-ratio:320/400;object-fit:cover}
.s-persona h3{font-size:24px}
.s-persona .s-role{color:var(--muted);font-size:15px;margin-top:2px}
.s-persona q{display:block;margin-top:14px;font-size:17px;color:var(--ink-2);quotes:"“" "”"}
.s-persona-cols{display:grid;grid-template-columns:1fr 1fr;gap:20px;margin-top:18px}
.s-persona-cols h4{font-size:13px;font-family:var(--font-mono);font-weight:500;letter-spacing:.06em;text-transform:uppercase;color:var(--muted)}
.s-persona-cols ul{margin:8px 0 0;padding-left:18px;font-size:15px;color:var(--ink-2)}
.s-persona-cols li+li{margin-top:4px}
.callout{border-left:3px solid var(--accent);padding:4px 0 4px 18px;font-size:18px;color:var(--ink);max-width:var(--text);font-weight:500}
.callout span{display:block;font-size:14px;font-weight:400;color:var(--muted);margin-top:4px}

/* Problems */
.problem{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:32px;align-items:center;padding:28px 0;border-top:1px solid var(--line)}
.problem:last-of-type{border-bottom:1px solid var(--line)}
.p-n{font-family:var(--font-mono);font-size:12px;color:var(--muted);letter-spacing:.06em}
.problem h3{font-size:24px;margin-top:6px}
.problem p{margin-top:10px;color:var(--ink-2);font-size:16px}
.ev{display:flex;align-items:baseline;gap:12px;margin-top:16px;padding:14px 16px;border-radius:12px;background:var(--tint)}
.ev b{font-family:var(--font-display);font-size:28px;font-weight:800;letter-spacing:-.03em;line-height:1;white-space:nowrap}
.ev span{font-size:14px;color:var(--ink-2);line-height:1.4}
.tag{display:inline-block;font-family:var(--font-mono);font-size:11px;letter-spacing:.05em;text-transform:uppercase;padding:3px 8px;border-radius:999px;margin-left:8px;vertical-align:2px}
.tag-risk{background:var(--amber-50);color:var(--amber)}
.quote{margin-top:12px;font-size:15px;color:var(--muted);font-style:italic}
.s-shot{border-radius:14px;overflow:hidden;border:1px solid var(--line);background:var(--paper)}
.s-shot img{width:100%}
figure{margin:0}
figcaption{font-size:13px;color:var(--muted);margin-top:8px}
.shot-tall{max-width:300px;margin:0 auto}
.shot-tall img{max-height:520px;width:auto;margin:0 auto}
.priority{display:flex;gap:16px;align-items:flex-start;padding:20px;border-radius:16px;background:var(--accent-50);color:var(--ink)}
.priority b{font-family:var(--font-display)}
.priority p{font-size:16px;color:var(--ink-2)}

/* Solutions */
.principle{border-radius:20px;padding:28px;background:var(--ink);color:#fff}
.principle .s-mono{color:rgb(255 255 255/.6)}
.principle h3{color:#fff;font-size:clamp(22px,2.6vw,30px);margin-top:8px}
.principle p{color:rgb(255 255 255/.78);margin-top:10px;max-width:640px;font-size:16px}
.fix{padding:40px 0;border-top:1px solid var(--line)}
.fix-head{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:32px;align-items:end}
.fix-head h3{font-size:26px;margin-top:6px}
.fix-head p{color:var(--ink-2);font-size:16px}
.ties{font-family:var(--font-mono);font-size:12px;color:var(--accent);letter-spacing:.04em}
.ba{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:20px;margin-top:24px;align-items:start}
.ba figure{position:relative}
.ba .lbl{display:inline-block;font-family:var(--font-mono);font-size:11px;letter-spacing:.06em;text-transform:uppercase;padding:4px 10px;border-radius:999px;margin-bottom:10px}
.lbl-b{background:var(--tint);color:var(--muted)}
.lbl-a{background:var(--green-50);color:var(--green)}
.ba .s-shot{display:flex;align-items:center;justify-content:center;min-height:220px;padding:0}
.ba .s-shot.pad{padding:20px;background:var(--tint)}
.ba .s-shot.pad img{max-height:460px;width:auto;border-radius:10px;box-shadow:0 2px 12px rgb(0 0 0/.08)}
.iter{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:12px;margin-top:20px}
.iter div{border:1px solid var(--line);border-radius:12px;padding:14px;background:var(--paper)}
.iter b{display:block;font-size:15px}
.iter span{display:block;font-size:13px;color:var(--muted);margin-top:4px}
.iter div.on{border-color:var(--accent);background:var(--accent-50)}
.chips{display:flex;flex-wrap:wrap;gap:8px}
.chips span{font-size:14px;padding:6px 12px;border-radius:999px;border:1px solid var(--line);background:var(--paper);color:var(--ink-2)}

/* Final screens */
.screens{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:16px}
.screens figure .s-shot{padding:14px;background:var(--tint)}
.screens figure .s-shot img{border-radius:10px;box-shadow:0 2px 12px rgb(0 0 0/.08)}
.screens figcaption b{display:block;color:var(--ink);font-size:14px}

/* Validation */
.valid{display:grid;grid-template-columns:1fr 1fr;gap:16px}
.valid > div{border:1px solid var(--line);border-radius:16px;padding:22px;background:var(--paper)}
.valid h3{font-size:18px}
.valid ul{margin:12px 0 0;padding-left:18px;color:var(--ink-2);font-size:15px}
.valid li+li{margin-top:6px}

/* Reflection */
.reflect{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:16px}
.reflect div{border-top:2px solid var(--ink);padding-top:14px}
.reflect h3{font-size:18px}
.reflect p{margin-top:8px;font-size:15px;color:var(--ink-2)}

.foot{margin-top:120px;padding:40px 0 56px;border-top:1px solid var(--line);font-size:14px;color:var(--muted)}
.foot-in{display:flex;flex-wrap:wrap;justify-content:space-between;gap:12px}

/* Lightbox */
.zoom{cursor:zoom-in}
img[data-zoom]{cursor:zoom-in}
dialog.s-lb{border:0;padding:0;background:transparent;max-width:min(1400px,96vw);max-height:94vh}
dialog.s-lb::backdrop{background:rgb(21 23 28/.82)}
dialog.s-lb img{max-width:min(1400px,96vw);max-height:88vh;width:auto;border-radius:12px;background:#fff}
dialog.s-lb button{position:fixed;top:16px;right:16px;width:44px;height:44px;border-radius:50%;border:0;background:#fff;font-size:22px;cursor:pointer}



/* Problem statement */
.ch-head h2.ps-h{font-size:clamp(24px,2.6vw,32px);font-weight:700;line-height:1.3;letter-spacing:-.015em;text-wrap:pretty}
.ps-h em{font-style:normal;color:var(--red)}
.ps{border-radius:20px;padding:clamp(22px,3vw,36px);background:var(--paper);border:1px solid var(--line);border-left:4px solid var(--accent)}
.ps-main{margin-top:12px;font-family:var(--font-display);font-weight:600;font-size:clamp(20px,2.1vw,26px);line-height:1.35;letter-spacing:-.01em;color:var(--ink);max-width:34em}
.ps-main b{color:var(--red);font-weight:700}
.ps-points{list-style:none;margin:12px 0 0;padding:0;display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:12px}
.ps-points li{padding:12px 14px;border-radius:12px;background:var(--tint)}
.ps-points b{display:block;font-size:15px}
.ps-points span{display:block;font-size:13px;color:var(--muted);margin-top:2px;line-height:1.4}
@media (max-width:960px){.ps-points{grid-template-columns:1fr 1fr}}
@media (max-width:480px){.ps-points{grid-template-columns:1fr}}
.ps-hmw{margin-top:18px;padding-top:16px;border-top:1px solid var(--line);font-size:17px;color:var(--ink-2);max-width:40em}
.ps-hmw span{font-family:var(--font-mono);font-size:12px;letter-spacing:.06em;text-transform:uppercase;color:var(--accent);margin-right:8px}


/* Research sub-parts */
.rs{padding-top:40px;margin-top:40px;border-top:1px solid var(--line)}
.rs > * + *{margin-top:20px}
.rs-head{display:grid;grid-template-columns:minmax(0,1fr);gap:12px}
.rs-l{width:36px;height:36px;border-radius:50%;background:var(--ink);color:#fff;font-family:var(--font-display);font-weight:700;display:grid;place-items:center}
.rs-head h3{font-size:clamp(22px,2.2vw,28px);margin-top:4px}
.rs-head p:last-child{margin-top:8px;color:var(--ink-2);font-size:17px}
.rs-sub{font-size:13px;font-family:var(--font-mono);font-weight:500;letter-spacing:.06em;text-transform:uppercase;color:var(--muted);padding-top:12px}
.rs-facts{list-style:none;margin:0;padding:0;display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:12px}
.rs-facts li{border:1px solid var(--line);border-radius:14px;padding:16px;background:var(--paper)}
.rs-facts b{display:block;font-family:var(--font-display);font-size:17px}
.rs-facts span{display:block;font-size:14px;color:var(--muted);margin-top:6px;line-height:1.45}
.rivals-row{display:flex;flex-wrap:wrap;gap:8px}
.rivals-row span{font-weight:600;font-size:14px;padding:7px 14px;border-radius:999px;background:var(--paper);border:1px solid var(--line)}
.caps-grid{list-style:none;margin:0;padding:0;display:grid;grid-template-columns:1fr 1fr;gap:0 24px;border-top:1px solid var(--line-2)}
.caps-grid li{padding:10px 0 10px 26px;border-bottom:1px solid var(--line-2);font-size:15px;color:var(--ink-2);position:relative}
.caps-grid li::before{content:"✓";position:absolute;left:2px;color:var(--green);font-weight:700}
.rs-take{padding:16px 18px;border-radius:14px;background:var(--tint);font-size:16px;color:var(--ink-2);max-width:var(--text)}
.rs-take b{color:var(--ink)}
@media (max-width:960px){.rs-facts{grid-template-columns:1fr 1fr}}
@media (max-width:600px){.rs-facts,.caps-grid{grid-template-columns:1fr}.rs-head{grid-template-columns:1fr;gap:10px}}

/* Business requirements */
.goals > .s-mono{margin-bottom:12px}
.goals ol{list-style:none;margin:0;padding:0;display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:12px;counter-reset:g}
.goals li{counter-increment:g;border:1px solid var(--line);border-radius:14px;padding:16px 16px 16px 52px;background:var(--paper);position:relative}
.goals li::before{content:counter(g,decimal-leading-zero);position:absolute;left:16px;top:16px;font-family:var(--font-mono);font-size:12px;color:var(--accent)}
.goals b{display:block;font-size:16px}
.goals span{display:block;font-size:14px;color:var(--muted);margin-top:4px;line-height:1.45}
@media (max-width:960px){.goals ol{grid-template-columns:1fr 1fr}}
@media (max-width:560px){.goals ol{grid-template-columns:1fr}}

/* Responsive */
@media (max-width:960px){
  .ch-head{grid-template-columns:1fr;gap:8px}
  .ch-n{padding-top:0}
  .ch-body{margin-left:0}
  .s-steps{grid-template-columns:1fr 1fr}
  .step + .step{border-left:0}
  .step{border-top:1px solid var(--line)}
  .step:nth-child(-n+2){border-top:0}
  .step:nth-child(even){border-left:1px solid var(--line)}
  .stats,.screens{grid-template-columns:1fr 1fr}
}
@media (max-width:720px){
  :root{--gutter:16px}
  body{font-size:16px}
  .s-top .toc{display:none}
  .s-hero{padding-top:40px}
  .meta{grid-template-columns:1fr 1fr}
  .meta div:nth-child(3){padding-left:0;border-left:0}
  .meta div:nth-child(n+3){border-top:1px solid var(--line)}
  .headlines,.methods,.s-needs,.valid,.reflect,.problem,.fix-head,.ba,.iter{grid-template-columns:1fr}
  .s-persona{grid-template-columns:1fr}
  .s-persona img{max-width:160px}
  .s-persona-cols{grid-template-columns:1fr}
  .ch{padding-top:72px}
  .problem{gap:20px}
}

/* ---------- Shared components added for the other case studies ---------- */
.pair{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:16px;align-items:start}
.gal{display:grid;gap:16px;align-items:start}
.gal-3{grid-template-columns:repeat(3,minmax(0,1fr))}
.gal-4{grid-template-columns:repeat(4,minmax(0,1fr))}
.gal.phones.gal-3{max-width:760px}
.gal.phones .s-shot{padding:14px;background:var(--tint)}
.gal.phones .s-shot img{border-radius:10px;box-shadow:0 2px 12px rgb(0 0 0/.08)}
.s-shot img[data-zoom]{cursor:zoom-in}
.sub{font-family:var(--font-mono);font-weight:500;font-size:12px;letter-spacing:.06em;text-transform:uppercase;color:var(--muted)}
.list{margin:0;padding-left:20px;display:grid;gap:8px;font-size:16px;color:var(--ink-2);max-width:var(--text)}
.list li::marker{color:var(--accent)}
.list b{color:var(--ink)}
.tiles{list-style:none;margin:0;padding:0;display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:12px}
.tiles li{border:1px solid var(--line);border-radius:14px;padding:16px;background:var(--paper);font-size:15px;color:var(--ink-2);line-height:1.45}
.tiles.warn li{background:var(--amber-50);border-color:transparent;color:var(--ink)}
.src{display:flex;flex-wrap:wrap;gap:8px 20px;font-size:14px}
.src a{font-weight:600;text-underline-offset:3px}
.src a::after{content:" ↗"}
@media (max-width:960px){.gal-4,.tiles{grid-template-columns:1fr 1fr}}
@media (max-width:720px){.pair,.gal-3{grid-template-columns:1fr}.gal.phones.gal-3{grid-template-columns:1fr 1fr}}