:root{
  --paper:#f6f6f2; --paper-2:#ecece6; --panel:#e9eae3; --graphite:#23262c; --lead:#5d626c; --rule:#d7d7cf;
  --blue:#2b63a6; --blue-soft:#cfe0f1; --screen-bg:#ffffff;
  --shadow:0 1px 2px rgba(20,24,32,.05), 0 14px 34px -14px rgba(20,30,50,.22);
  --display:"Young Serif", Georgia, "Times New Roman", serif;
  --body:"Hanken Grotesk", system-ui, -apple-system, "Segoe UI", sans-serif;
  --hand:"Caveat", "Comic Sans MS", cursive;
  color-scheme:light;
  padding-top:env(safe-area-inset-top,0px); padding-bottom:env(safe-area-inset-bottom,0px);
}
@media (prefers-color-scheme:dark){:root:not([data-theme="light"]){
  --paper:#17191d; --paper-2:#20232a; --panel:#1e2127; --graphite:#e9e7e1; --lead:#a3a7b0; --rule:#33363d;
  --blue:#86b6e8; --blue-soft:#24364b; --screen-bg:#ffffff;
  --shadow:0 1px 2px rgba(0,0,0,.3), 0 14px 34px -14px rgba(0,0,0,.6); color-scheme:dark}}
:root[data-theme="dark"]{
  --paper:#17191d; --paper-2:#20232a; --panel:#1e2127; --graphite:#e9e7e1; --lead:#a3a7b0; --rule:#33363d;
  --blue:#86b6e8; --blue-soft:#24364b; --screen-bg:#ffffff;
  --shadow:0 1px 2px rgba(0,0,0,.3), 0 14px 34px -14px rgba(0,0,0,.6); color-scheme:dark}

*{box-sizing:border-box}
img{max-width:100%}
[hidden]{display:none!important}
body{margin:0;background:var(--paper);color:var(--graphite);font:400 17px/1.65 var(--body);
  padding-left:max(16px, env(safe-area-inset-left,0px));padding-right:max(16px, env(safe-area-inset-right,0px));}
body::before{content:"";position:fixed;inset:0 0 auto;height:env(safe-area-inset-top,0px);z-index:10;background:var(--paper)}
a{color:inherit}
a:focus-visible{outline:2px solid var(--blue);outline-offset:3px;border-radius:2px}
.wrap{max-width:920px;margin:0 auto}

nav.top{display:flex;align-items:center;justify-content:space-between;gap:16px;padding-block:28px 0;flex-wrap:wrap}
.brand{font-family:var(--display);font-size:20px;text-decoration:none}
.links{display:flex;gap:22px;font-size:15px;color:var(--lead)}
.links a{text-decoration:none}
.links a:hover{color:var(--graphite)}

.back{display:inline-block;margin-top:56px;font-size:15px;color:var(--lead);text-decoration:none}
.back:hover{color:var(--graphite)}
.eyebrow{font-family:var(--hand);font-size:24px;color:var(--blue);margin-top:24px}
h1{font-family:var(--display);font-weight:400;font-size:clamp(34px,5vw,54px);line-height:1.1;margin:4px 0 0;text-wrap:balance}

.meta{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:20px 24px;border-top:1px solid var(--rule);border-bottom:1px solid var(--rule);padding-block:20px;margin:40px 0 0}
.meta dt{font-size:12px;letter-spacing:.08em;text-transform:uppercase;color:var(--lead);margin-bottom:4px}
.meta dd{margin:0;font-size:15px;line-height:1.45}
.meta .hl dd{color:var(--blue);font-weight:600}
.lede{font-size:21px;line-height:1.5;font-weight:500;margin:36px 0 0;text-wrap:pretty}

/* jump bar */
.toc{position:sticky;top:env(safe-area-inset-top,0px);z-index:5;display:flex;align-items:center;gap:6px 20px;flex-wrap:wrap;margin:64px 0 0;padding:12px 18px;
  background:color-mix(in srgb, var(--paper) 88%, transparent);backdrop-filter:blur(8px);-webkit-backdrop-filter:blur(8px);border:1px solid var(--rule);border-radius:12px;font-size:14.5px}
.toc{justify-content:space-between;top:calc(16px + env(safe-area-inset-top,0px));box-shadow:0 1px 2px rgba(20,24,32,.04), 0 10px 24px -12px rgba(20,30,50,.18)}
.toc span{font-weight:600;margin-right:6px}
.toc a{text-decoration:none;color:var(--lead)}
.toc a:hover{color:var(--blue)}

/* figures */
figure{margin:44px 0 0}
figcaption{font-size:14.5px;color:var(--lead);margin-top:14px;line-height:1.55}
figcaption b{color:var(--graphite);font-weight:600}
.screen{display:block;position:relative;border-radius:12px;overflow:hidden;background:var(--screen-bg);border:1px solid var(--rule);box-shadow:var(--shadow);cursor:zoom-in;text-decoration:none}
.screen img{display:block;width:100%;height:auto}
.panel{background:var(--panel);border-radius:16px;padding:32px;overflow-x:auto;max-width:100%}
.panel svg{display:block;width:100%;height:auto;min-width:500px}

/* hero composition: two real screens, overlapping, at their natural size */
.stage{position:relative;max-width:640px;margin:0 auto;padding-bottom:110px}
.stage .back-shot{width:88%;margin-left:auto}
.stage .front-shot{position:absolute;left:0;bottom:0;width:74%}

/* numbered hand-drawn markers on screens */
.pin{position:absolute;width:30px;height:30px;transform:translate(-50%,-50%);border:2px solid var(--blue);border-radius:50%;background:rgba(255,255,255,.92);
  font:600 20px/26px var(--hand);color:#2b63a6;text-align:center}
.legend{list-style:none;padding:0;margin:14px 0 0;display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:12px 24px;font-size:14.5px;color:var(--lead)}
.legend li{display:flex;gap:10px;align-items:baseline}
.legend i{font:600 20px/1 var(--hand);color:var(--blue);font-style:normal}

/* text + screen rows */
.row{display:grid;grid-template-columns:minmax(0,5fr) minmax(0,7fr);gap:44px;align-items:center;margin-top:56px}
.row.flip{grid-template-columns:minmax(0,7fr) minmax(0,5fr)}
.row.flip > :first-child{order:2}
.row h3{font-family:var(--display);font-weight:400;font-size:25px;line-height:1.2;margin:0 0 12px;text-wrap:balance}
.row p{margin:0 0 12px;color:var(--lead)}
.row figure{margin:0}
.row .screen.narrow{max-width:460px;margin-left:auto}

section{padding-top:80px;scroll-margin-top:80px}
h2{font-family:var(--display);font-weight:400;font-size:clamp(28px,3.6vw,38px);line-height:1.15;margin:0 0 18px;text-wrap:balance}
section > p{margin:0 0 16px}
.lead-line{font-size:20px;font-weight:500}
ul.points{list-style:none;padding:0;margin:8px 0 0;display:flex;flex-direction:column;gap:14px}
ul.points li{padding-left:22px;position:relative}
ul.points li::before{content:"";position:absolute;left:0;top:.72em;width:12px;height:2px;background:var(--blue);border-radius:2px}
ul.points b{font-weight:600}
blockquote{margin:28px 0 0;padding:0 0 0 18px;border-left:2px solid var(--blue);font-family:var(--display);font-size:22px;line-height:1.4}

/* tiles: sketches and wireframes */
.grid{display:grid;gap:20px;grid-template-columns:repeat(var(--n,2),minmax(0,1fr));margin-top:28px}
.tile{min-width:0;display:flex;flex-direction:column;gap:10px}
.tile .sk-card{background:var(--panel);border-radius:12px;padding:14px}
.tile .sk-card svg{width:100%;height:auto;display:block}
.tile h4{margin:6px 0 0;font-size:16.5px;font-weight:600}
.tile p{margin:0;font-size:15px;color:var(--lead)}
.tile .q{font-family:var(--display);font-size:17px;color:var(--graphite);line-height:1.4}
.tile .screen{border-radius:8px}
.tile.chosen .screen{outline:2.5px solid var(--blue);outline-offset:5px}
.picked{font:600 22px/1 var(--hand);color:var(--blue)}

/* tables */
.heat{width:100%;border-collapse:collapse;font-size:14.5px;min-width:520px}
.heat th,.heat td{padding:9px 12px;text-align:left;border-bottom:1px solid var(--rule)}
.heat th{font-size:12px;letter-spacing:.08em;text-transform:uppercase;color:var(--lead);font-weight:500}
.heat td.n{font-variant-numeric:tabular-nums;text-align:right;width:100px}
.heat td.n span{display:inline-block;min-width:48px;padding:2px 8px;border-radius:4px;background:color-mix(in srgb, var(--blue) calc(var(--v) * 1%), transparent)}
.heat td.n.hi span{color:var(--paper)}

.impact{display:flex;flex-direction:column;border-top:1px solid var(--rule);margin-top:24px}
.impact div{display:grid;grid-template-columns:190px minmax(0,1fr);gap:24px;padding-block:22px;border-bottom:1px solid var(--rule);align-items:baseline}
.impact strong{font-family:var(--display);font-weight:400;font-size:40px;line-height:1;color:var(--blue);font-variant-numeric:tabular-nums}
.note{font-size:15px;color:var(--lead);margin-top:20px}

.sk *{fill:none;stroke:var(--lead);stroke-width:1.4;stroke-linecap:round;stroke-linejoin:round}
.sk .b{stroke:var(--blue);stroke-width:2}
.sk .fill{fill:var(--blue-soft);stroke:none}
.sk .bg{fill:var(--paper)}
.sk text{fill:var(--blue);stroke:none;font-family:var(--hand);font-size:17px}
.sk text.g{fill:var(--lead);font-family:var(--body);font-size:11px}

.next{display:flex;justify-content:space-between;align-items:center;gap:20px;flex-wrap:wrap;margin-top:96px;padding:28px;border:1px solid var(--rule);border-radius:12px;text-decoration:none}
.next:hover{background:var(--paper-2)}
.next small{display:block;font-size:12px;letter-spacing:.08em;text-transform:uppercase;color:var(--lead)}
.next b{font-family:var(--display);font-weight:400;font-size:clamp(20px,2.6vw,26px)}
.next svg{width:40px;height:14px;flex:none}
.next svg path{fill:none;stroke:var(--blue);stroke-width:2;stroke-linecap:round;stroke-linejoin:round}

footer{margin-top:72px;border-top:1px solid var(--rule);padding-block:32px 48px;display:flex;flex-wrap:wrap;justify-content:space-between;gap:16px;font-size:14px;color:var(--lead)}
footer .email{user-select:all;color:var(--graphite)}

/* lightbox */
dialog.lb{border:0;padding:0;background:transparent;max-width:96vw;max-height:94vh}
dialog.lb::backdrop{background:rgba(10,12,16,.84)}
dialog.lb img{display:block;max-width:96vw;max-height:90vh;width:auto;height:auto;border-radius:6px;background:#fff}
dialog.lb button{position:fixed;top:calc(14px + env(safe-area-inset-top,0px));right:calc(14px + env(safe-area-inset-right,0px));font:600 15px var(--body);background:var(--paper);color:var(--graphite);border:0;border-radius:20px;padding:8px 14px;cursor:pointer}

@media (max-width:760px){
  .meta{grid-template-columns:repeat(2,minmax(0,1fr))}
  .grid{grid-template-columns:1fr}
  .row,.row.flip{grid-template-columns:1fr;gap:20px}
  .row.flip > :first-child{order:0}
  .row .screen.narrow{margin:0 auto}
  .impact div{grid-template-columns:1fr;gap:6px}
  .panel{padding:16px}
  .legend{grid-template-columns:1fr}
  .stage{padding-bottom:0;display:flex;flex-direction:column;gap:16px}
  .stage .back-shot,.stage .front-shot{position:static;width:100%}
  .pin{width:24px;height:24px;font-size:16px;line-height:20px}
  .toc{display:none}
}

/* presentation boards exported from Figma (white artboards with their own titles) */
.screen.board{border-radius:10px;box-shadow:0 1px 2px rgba(20,24,32,.05), 0 10px 28px -16px rgba(20,30,50,.25)}
.board-notes{list-style:none;padding:0;margin:16px 0 0;display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:12px 28px;font-size:15px;color:var(--lead)}
.board-notes li{display:flex;gap:10px;align-items:baseline}
.board-notes b{color:var(--graphite);font-weight:600}
.board-notes i{font:600 20px/1 var(--hand);color:var(--blue);font-style:normal;flex:none}

/* horizontal concept carousel */
.carousel{margin-top:28px}
.track{display:flex;gap:20px;overflow-x:auto;scroll-snap-type:x mandatory;scroll-padding:0;padding-bottom:14px;-webkit-overflow-scrolling:touch;scrollbar-width:thin}
.track figure{flex:0 0 84%;margin:0;scroll-snap-align:start;min-width:0}
.track .screen{border-radius:10px}
.track figcaption{margin-top:12px}
.track figcaption .k{font:600 21px/1 var(--hand);color:var(--blue);margin-right:6px}
.car-ctrl{display:flex;align-items:center;justify-content:space-between;gap:16px;margin-top:10px}
.car-ctrl .hint{font-size:14px;color:var(--lead)}
.car-ctrl .btns{display:flex;gap:8px}
.car-ctrl button{width:40px;height:40px;border-radius:50%;border:1px solid var(--rule);background:var(--paper);color:var(--graphite);font:500 18px/1 var(--body);cursor:pointer}
.car-ctrl button:hover{border-color:var(--blue);color:var(--blue)}
.car-ctrl button:disabled{opacity:.35;cursor:default;border-color:var(--rule);color:var(--graphite)}
.car-ctrl button:focus-visible{outline:2px solid var(--blue);outline-offset:2px}
.joule{max-width:320px;margin:0 auto;border-radius:22px;border:0;background:none;box-shadow:none}
@media (max-width:760px){.track figure{flex-basis:90%}.board-notes{grid-template-columns:1fr}}

/* design decisions: short "why" notes under the design */
.decisions{margin-top:48px}
.decisions > h3{font-size:13px;letter-spacing:.08em;text-transform:uppercase;color:var(--lead);font-weight:600;margin:0 0 4px}
.dgrid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:0 40px}
.dgrid div{border-top:1px solid var(--rule);padding-block:20px 6px;min-width:0}
.dgrid h4{font-family:var(--display);font-weight:400;font-size:20px;line-height:1.25;margin:0 0 8px;text-wrap:balance}
.dgrid p{margin:0;font-size:15.5px;color:var(--lead)}
@media (max-width:760px){.dgrid{grid-template-columns:1fr}}

/* small coffee illustration in the case study header */
.mini{display:inline-flex;width:40px;height:44px;flex:none}
.mini svg{width:100%;height:100%;display:block}
.mini svg *{fill:none;stroke:var(--graphite);stroke-width:2.6;stroke-linecap:round;stroke-linejoin:round}
.mini .mug{fill:var(--paper)}
.mini .steam{stroke:var(--blue);animation:steam 3s ease-in-out infinite}
.mini .steam:nth-of-type(2){animation-delay:1.2s}
@keyframes steam{0%,100%{opacity:.25;transform:translateY(2px)}50%{opacity:1;transform:translateY(-2px)}}
.navr{display:flex;align-items:center;gap:22px;flex-wrap:wrap}
@media (prefers-reduced-motion:reduce){.mini .steam{animation:none}}

/* frosted glass jump bar */
.toc{
  background:color-mix(in srgb, var(--paper) 30%, transparent);
  -webkit-backdrop-filter:blur(16px) saturate(170%);
  backdrop-filter:blur(16px) saturate(170%);
  border:1px solid color-mix(in srgb, var(--graphite) 10%, transparent);
  border-radius:16px;
  box-shadow:inset 0 1px 0 rgba(255,255,255,.35), 0 1px 2px rgba(20,24,32,.04), 0 12px 30px -12px rgba(20,30,50,.22);
}
@supports not ((backdrop-filter:blur(1px)) or (-webkit-backdrop-filter:blur(1px))){
  .toc{background:color-mix(in srgb, var(--paper) 94%, transparent)}
}

/* sticky frosted-glass header */
nav.top{position:sticky;top:calc(12px + env(safe-area-inset-top,0px));z-index:20;margin-top:16px;padding:10px 14px 10px 20px;border-radius:16px;
  background:color-mix(in srgb, var(--paper) 30%, transparent);
  -webkit-backdrop-filter:blur(16px) saturate(170%);backdrop-filter:blur(16px) saturate(170%);
  border:1px solid color-mix(in srgb, var(--graphite) 10%, transparent);
  box-shadow:inset 0 1px 0 rgba(255,255,255,.35), 0 1px 2px rgba(20,24,32,.04), 0 12px 30px -12px rgba(20,30,50,.22)}
@supports not ((backdrop-filter:blur(1px)) or (-webkit-backdrop-filter:blur(1px))){nav.top{background:color-mix(in srgb, var(--paper) 94%, transparent)}}
.toc{top:calc(90px + env(safe-area-inset-top,0px))}