/* Case studies: /cases/, /cases/tags/<tag>/, /cases/<slug>/. Palette and tokens as on index.html. */
:root{
  --bg:#FAF7F0; --ink:#1C1A15; --muted:#5C5748; --line:#E4DECF;
  --accent:#8A6D1F; --accent-light:#C9B97E; --card:#F3EEE1;
  --footer-muted:#B5AE9C; --faint:#8A8371;
  --serif:"Newsreader",Georgia,serif; --sans:"Archivo",system-ui,sans-serif; --mono:"IBM Plex Mono",monospace;
  --nav-h:81px; --anchor-gap:16px; --bar-h:65px;
}
*{box-sizing:border-box}
@media (prefers-reduced-motion: no-preference){
  html{scroll-behavior:smooth}
}
body{margin:0;background:var(--bg);color:var(--ink);font-family:var(--sans);font-size:16px;line-height:1.6;overflow-wrap:break-word}
a{color:var(--accent);text-decoration:underline;text-underline-offset:3px}
a:hover{color:var(--ink)}
img{max-width:100%;display:block}
footer, header{scroll-margin-top:calc(var(--nav-h) + var(--anchor-gap))}
.wrap{max-width:1180px;margin:0 auto;padding:0 56px}
.btn{display:inline-flex;align-items:center;justify-content:center;min-height:48px;padding:14px 28px;border-radius:999px;font-size:15px;font-weight:500;text-decoration:none;transition:transform .15s ease,opacity .15s ease}
.btn:hover{transform:translateY(-1px);opacity:.9}
.btn-dark{background:var(--ink);color:var(--bg)}
.btn-dark:hover{color:var(--bg)}
.btn-light{background:var(--bg);color:var(--ink)}
.btn-light:hover{color:var(--ink)}
:focus-visible{outline:2px solid var(--accent);outline-offset:2px}
h1{font-family:var(--serif);font-size:clamp(32px,4.4vw,48px);line-height:1.1;font-weight:500;letter-spacing:-.01em;text-wrap:pretty;margin:0}
h2{font-family:var(--serif);font-size:28px;font-weight:500;line-height:1.2;margin:0}
h3{font-family:var(--serif);font-size:21px;font-weight:500;line-height:1.25;margin:0}

/* Nav (index.html) */
.nav{position:sticky;top:0;z-index:10;background:var(--bg);background:color-mix(in srgb,var(--bg) 92%,transparent);backdrop-filter:blur(8px);border-bottom:1px solid var(--line)}
.nav-in{display:flex;justify-content:space-between;align-items:center;gap:16px;padding:18px 56px;max-width:1180px;margin:0 auto}
.nav-name{font-family:var(--serif);font-style:italic;font-size:20px;color:var(--ink);text-decoration:none;white-space:nowrap}
.nav-links{display:flex;gap:28px;align-items:center;font-size:14px}
.nav-links a:not(.btn){color:var(--muted);text-decoration:none}
.nav-links a:not(.btn):hover{color:var(--ink)}
.nav-sep{width:1px;height:20px;background:var(--line);flex:none}
.nav-links a.nav-page{color:var(--ink);font-weight:500;white-space:nowrap}
.nav-links a.nav-page:hover{color:var(--accent)}
.nav-links a[aria-current]{color:var(--ink);font-weight:600;box-shadow:inset 0 -2px 0 var(--accent)}
.nav .btn{min-height:44px;padding:9px 20px;font-size:13px;white-space:nowrap}

/* Shared bits */
.eyebrow{font-size:12px;letter-spacing:.14em;text-transform:uppercase;color:var(--accent);font-weight:600;margin:0 0 14px}
.grp{font-size:11px;letter-spacing:.12em;text-transform:uppercase;color:var(--muted);margin:0 0 8px}
.crumb{font-size:13px;color:var(--muted);margin:0 0 14px}
.crumb a{color:var(--muted);text-decoration:none}
.crumb a:hover{color:var(--ink);text-decoration:underline}
.chips{list-style:none;margin:0;padding:0;display:flex;flex-wrap:wrap;gap:6px}
.chip{display:inline-block;font-family:var(--mono);font-size:12px;letter-spacing:.03em;line-height:1.5;padding:4px 11px;border:1px solid var(--line);border-radius:999px;color:var(--muted);background:var(--bg);text-decoration:none}
.chip:hover{color:var(--ink);border-color:var(--accent-light)}
.chip b{color:var(--accent);font-weight:500;margin-left:6px}
.chip.on{background:var(--ink);color:var(--bg);border-color:var(--ink)}
.chip.on b{color:var(--accent-light)}

/* Cards */
.cards{display:grid;gap:14px;min-width:0}
.case-card{position:relative;background:var(--card);border-radius:4px;padding:22px 24px;box-shadow:inset 0 0 0 1px transparent;transition:box-shadow .15s ease}
.case-card:hover{box-shadow:inset 0 0 0 1px var(--accent-light)}
.card-title{font-family:var(--serif);font-size:22px;font-weight:500;line-height:1.25;margin:0 0 8px}
.card-title a{color:var(--ink);text-decoration:none}
.card-link::after{content:"";position:absolute;inset:0;border-radius:4px}
.case-card:hover .card-link{color:var(--ink);text-decoration:underline;text-decoration-color:var(--accent);text-decoration-thickness:2px}
.card-link:focus-visible{outline:none}
.card-link:focus-visible::after{outline:2px solid var(--accent);outline-offset:2px}
.case-card .chip{position:relative;z-index:1}
.card-problem{color:var(--muted);font-size:15px;margin:0 0 6px}
.card-result{color:var(--ink);font-size:14.5px;font-weight:500;margin:0 0 12px}
.case-card .chip{font-size:11px;padding:2px 9px}

/* Index and tag pages */
.index-main{padding-top:56px;padding-bottom:72px}
.index-head{margin-bottom:36px}
.intro{font-size:16px;line-height:1.6;color:var(--muted);max-width:600px;margin:12px 0 0}
.index-grid{display:grid;grid-template-columns:220px minmax(0,1fr);gap:40px;align-items:start}
.tag-side{position:sticky;top:calc(var(--nav-h) + 24px);max-height:calc(100vh - var(--nav-h) - 48px);overflow-y:auto;border-right:1px solid var(--line);padding-right:20px}
.tag-side .chips{flex-direction:column;align-items:flex-start;margin-bottom:20px}
.tag-side .chips:last-child{margin-bottom:0}

/* Case page */
.case-grid{display:grid;grid-template-columns:200px minmax(0,46rem) 240px;column-gap:40px;justify-content:center;max-width:1400px;margin:0 auto;padding:48px 32px 72px}
.toc-col,.hire-col{position:sticky;top:calc(var(--nav-h) + 24px);align-self:start;max-height:calc(100vh - var(--nav-h) - 48px);overflow-y:auto}
.toc ol{list-style:none;margin:0 0 28px;padding:0;font-size:14px;line-height:1.45}
.toc li{margin:0 0 8px}
.toc a{display:block;color:var(--muted);text-decoration:none;border-left:2px solid transparent;padding-left:10px}
.toc a:hover{color:var(--ink)}
.toc a.is-current{color:var(--ink);font-weight:600;border-left-color:var(--accent)}
.side-tags .chips{gap:5px}
.side-tags .chip{font-size:11px;padding:2px 9px}
.case{min-width:0}
.case h1{margin-bottom:18px}
.lead{font-size:19px;line-height:1.6;color:var(--muted);margin:0 0 22px}
.facts{background:var(--card);border-radius:4px;padding:18px 22px;margin:0 0 36px;display:grid;grid-template-columns:auto minmax(0,1fr);gap:8px 18px;font-size:15px}
.facts dt{color:var(--muted);font-size:11px;letter-spacing:.1em;text-transform:uppercase;padding-top:3px}
.facts dd{margin:0}
.jump{display:none}

/* Article body */
.body{font-size:17px;line-height:1.7;overflow-wrap:break-word}
.body p,.body ul,.body ol,.body blockquote{margin:0 0 18px}
.body ul,.body ol{padding-left:24px}
.body li{margin:0 0 6px}
.body h2{font-size:28px;margin:44px 0 14px;position:relative}
.body h3{font-size:21px;margin:30px 0 10px;position:relative}
.body h2,.body h3,.body span[id]{scroll-margin-top:calc(var(--nav-h) + var(--anchor-gap))}
.h-anchor{position:absolute;left:-1.1em;width:1em;color:var(--accent-light);font-family:var(--sans);font-weight:400;text-decoration:none;opacity:0;transition:opacity .15s ease}
.body h2:hover .h-anchor,.body h3:hover .h-anchor,.h-anchor:focus-visible,.body h2:focus-within .h-anchor,.body h3:focus-within .h-anchor{opacity:1}
.h-anchor:hover{color:var(--accent)}
.body blockquote{border-left:2px solid var(--accent-light);padding-left:18px;color:var(--muted);margin-left:0}
/* Reader attention: callouts and emphasis */
.body .callout{background:var(--card);border-left:3px solid var(--accent);border-radius:0 4px 4px 0;padding:16px 20px;margin:26px 0;color:var(--ink)}
.body .callout>:last-child{margin-bottom:0}
.body .callout strong.label{color:var(--ink);font-weight:600}
.body .callout--problem{border-left-color:var(--ink)}
.body .callout--problem strong.label{color:var(--ink);font-size:12px;letter-spacing:.14em;text-transform:uppercase;font-weight:700}
.body .callout--fix{border-left-color:var(--accent)}
.body .callout--fix strong.label{color:var(--ink);font-size:12px;letter-spacing:.14em;text-transform:uppercase;font-weight:700}
.body strong.mark{color:var(--ink);font-weight:700}
.body strong.label{font-weight:600}
.body code{font-family:var(--mono);font-size:.88em;background:var(--card);border-radius:3px;padding:1px 5px}
.body pre{font-family:var(--mono);font-size:14px;line-height:1.55;background:var(--card);border-radius:4px;padding:16px 18px;margin:0 0 20px;overflow-x:auto;max-width:100%}
.body pre code{background:none;padding:0;font-size:inherit}
.table-wrap{overflow-x:auto;max-width:100%;margin:0 0 22px;border:1px solid var(--line);border-radius:4px}
.table-wrap table{border-collapse:collapse;width:100%;font-size:14.5px;line-height:1.5}
.table-wrap th,.table-wrap td{text-align:left;padding:9px 12px;border-bottom:1px solid var(--line);vertical-align:top}
.table-wrap th{background:var(--card);font-weight:600}
.table-wrap tr:last-child td{border-bottom:0}
.body figure{margin:28px 0 30px}
.body .fig{border:1px solid var(--line);border-radius:4px;background:var(--bg);padding:12px}
.body figure svg{display:block;width:100%;height:auto}
.body figcaption{font-size:14px;line-height:1.5;color:var(--muted);margin-top:10px}
.body hr{border:0;border-top:1px solid var(--line);margin:36px 0}

/* Contact: hire card, end block, phone bar */
.doors{display:flex;flex-direction:column;gap:8px}
.door{display:flex;align-items:center;justify-content:center;min-height:44px;padding:8px 16px;border-radius:999px;font-size:14px;font-weight:500;text-align:center;text-decoration:none;color:var(--bg);border:1px solid var(--muted)}
.door:hover{color:var(--bg);border-color:var(--footer-muted)}
.door-call{background:var(--bg);color:var(--ink);border-color:var(--bg)}
.door-call:hover{color:var(--ink);border-color:var(--bg);opacity:.9}
.hire{background:var(--ink);color:var(--bg);border-radius:4px;padding:22px 20px}
.hire-title{font-family:var(--serif);font-size:20px;line-height:1.25;margin:0 0 6px}
.hire-sub{font-size:14px;color:var(--footer-muted);margin:0 0 16px}
.end-cta{background:var(--ink);color:var(--bg);border-radius:4px;padding:36px 28px;margin:48px 0 0;text-align:center}
.end-title{font-size:28px;margin:0 0 8px}
.end-sub{font-size:15px;color:var(--footer-muted);margin:0 0 22px}
.end-cta .doors{flex-direction:row;flex-wrap:wrap;justify-content:center}
.end-cta .door{min-width:150px}
.door-bar{display:none}
.related{margin-top:48px;padding-top:24px;border-top:1px solid var(--line)}
.related-title{font-size:24px;margin:0 0 16px}
.related .card-title{font-size:20px}

/* Footer (index.html) */
.footer{background:var(--ink);color:var(--bg);padding:72px 0;text-align:center}
.footer h2{font-size:42px;margin-bottom:12px}
.footer-sub{font-size:15px;color:var(--footer-muted);margin:0 0 32px}
.footer-links{display:flex;gap:24px;justify-content:center;margin-top:48px;font-size:13px;flex-wrap:wrap}
.footer-links a{color:var(--faint);text-decoration:none}
.footer-links a:hover{color:var(--bg)}
.copyright{font-size:12px;color:var(--faint);margin-top:28px}

/* Wide: figures break out of the text column, up to 960px */
@media (min-width:1500px){
  .case-grid{column-gap:120px;max-width:1560px}
  .body figure{margin-left:-112px;margin-right:-112px}
}

/* Two columns: contents + article; hire card hidden, end block stays */
@media (max-width:1099px){
  .case-grid{grid-template-columns:200px minmax(0,1fr);max-width:1060px}
  .hire-col{display:none}
}

/* Nav and footer collapse at the same width as index.html */
@media (max-width:900px){
  :root{--nav-h:73px}
  .wrap{padding:0 24px}
  .nav-in{padding:14px 24px}
  .nav-links{gap:18px}
  .nav-links a:not(.btn):not(.nav-page),.nav-sep{display:none}
  .nav .btn{padding:9px 16px}
  .footer h2{font-size:32px}
}

/* Small phones: name, Cases and the button share one row */
@media (max-width:420px){
  .nav-in{gap:10px}
  .nav-links{gap:12px}
  .nav-name{font-size:18px}
  .nav .btn{padding:9px 14px}
}

/* One column (phone and small tablet) */
@media (max-width:899px){
  .index-main{padding-top:36px;padding-bottom:48px}
  .index-head{margin-bottom:24px}
  .index-grid{grid-template-columns:minmax(0,1fr);gap:24px}
  .tag-side{position:static;max-height:none;overflow:visible;border-right:0;padding-right:0}
  .tag-side .chips{flex-direction:row;align-items:center;margin-bottom:14px}
  .case-grid{grid-template-columns:minmax(0,1fr);padding:28px 24px 48px}
  .case{grid-row:1}
  .toc-col{grid-row:2;position:static;max-height:none;overflow:visible;margin-top:36px}
  .toc{display:none}
  .lead{font-size:17.5px}
  .body{font-size:16.5px}
  .body h2{font-size:24px;margin-top:36px}
  .body h3{font-size:19px}
  .h-anchor{position:static;display:inline-block;width:auto;margin-right:.35em;opacity:.5}
  .facts{grid-template-columns:minmax(0,1fr);gap:2px;padding:16px 18px}
  .facts dd{margin-bottom:10px}
  .facts dd:last-child{margin-bottom:0}
  .jump{display:block;margin:0 0 22px;border:1px solid var(--line);border-radius:4px;background:var(--card)}
  .jump summary{cursor:pointer;padding:12px 16px;font-size:14px;font-weight:500;color:var(--ink)}
  .jump ol{list-style:none;margin:0;padding:0 16px 12px;font-size:15px;line-height:1.45}
  .jump li{padding:7px 0;border-top:1px solid var(--line)}
  .jump a{color:var(--muted);text-decoration:none}
  .end-cta{padding:28px 18px}
  .end-title{font-size:24px}
  .end-cta .door{min-width:0;flex:1 1 140px}
  .door-bar{display:flex;gap:8px;position:fixed;left:0;right:0;bottom:0;z-index:20;height:calc(var(--bar-h) + env(safe-area-inset-bottom,0px));padding:10px 12px calc(10px + env(safe-area-inset-bottom,0px));background:var(--ink);border-top:1px solid var(--muted)}
  .door-bar .door{flex:1;min-width:0;min-height:44px;padding:6px 8px;font-size:13px}
  body.case-page{padding-bottom:calc(var(--bar-h) + env(safe-area-inset-bottom,0px))}
}