/* ÖSTER case study · brand system: paper #F1EDE4 · ink #121110 · oxblood #6B1E22 · square corners
   Bodoni Moda (display) · Barlow Condensed (labels) · Instrument Sans (body) · DM Mono (data) */
@font-face{font-family:"Bodoni Moda";font-style:normal;font-weight:400 500;font-display:swap;src:url("assets/fonts/BodoniModa-normal-400-500.woff2") format("woff2")}
@font-face{font-family:"Bodoni Moda";font-style:italic;font-weight:400;font-display:swap;src:url("assets/fonts/BodoniModa-italic-400.woff2") format("woff2")}
@font-face{font-family:"Barlow Condensed";font-weight:500;font-display:swap;src:url("assets/fonts/BarlowCondensed-normal-500.woff2") format("woff2")}
@font-face{font-family:"Barlow Condensed";font-weight:600;font-display:swap;src:url("assets/fonts/BarlowCondensed-normal-600.woff2") format("woff2")}
@font-face{font-family:"Instrument Sans";font-weight:400 600;font-display:swap;src:url("assets/fonts/InstrumentSans-normal-400-600.woff2") format("woff2")}
@font-face{font-family:"DM Mono";font-weight:400;font-display:swap;src:url("assets/fonts/DMMono-normal-400.woff2") format("woff2")}
:root{
  --paper:#F1EDE4;--paper2:#E8E2D6;--paper3:#DDD5C6;--white:#FFFFFF;--night:#161412;
  --ink:#121110;--ink2:#4A4641;--ink3:#67615A;--ink3d:#9A938A;--line:#CFC7B8;
  --ox:#6B1E22;--ox2:#8A2A2F;--ox50:#F1E3E1;
  --serif:"Bodoni Moda",Didot,"Times New Roman",serif;--cond:"Barlow Condensed","Arial Narrow",sans-serif;
  --sans:"Instrument Sans",system-ui,-apple-system,"Segoe UI",sans-serif;--mono:"DM Mono",ui-monospace,Consolas,monospace;
  --pad:clamp(16px,5vw,72px);--ease:cubic-bezier(.16,1,.3,1);
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{background:var(--paper);color:var(--ink);font:400 17px/1.6 var(--sans);overflow-x:hidden}
a{color:inherit}
img{display:block;max-width:100%;height:auto}
em{font-style:italic}
.mono{font-family:var(--mono)}
[hidden]{display:none!important}
.skip{position:absolute;left:-999px;top:10px;background:var(--ink);color:var(--paper);padding:10px 14px;z-index:99}
.skip:focus{left:10px}
:focus-visible{outline:2px solid var(--ox);outline-offset:3px}

/* top bar */
.top{position:sticky;top:0;z-index:40;display:grid;grid-template-columns:1fr auto 1fr;align-items:center;gap:20px;padding:14px var(--pad);background:rgba(241,237,228,.88);backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);border-bottom:1px solid var(--line)}
.back{justify-self:start;text-decoration:none;font:500 14px var(--sans);color:var(--ink2);display:inline-flex;gap:8px;align-items:center}
.back span{transition:transform .3s var(--ease)}.back:hover span{transform:translateX(-4px)}
.mark{font:400 22px/1 var(--serif);letter-spacing:.24em;text-decoration:none;padding-left:.24em}
.toc{justify-self:end;display:flex;gap:22px}
.toc a{text-decoration:none;font:500 13px var(--cond);letter-spacing:.16em;text-transform:uppercase;color:var(--ink3)}
.toc a:hover{color:var(--ink)}

/* hero */
.hero{padding:clamp(64px,10vw,140px) var(--pad) clamp(40px,6vw,70px);max-width:1400px;margin:0 auto}
.kicker,.num,.tag{font:500 14px var(--cond);letter-spacing:.2em;text-transform:uppercase;color:var(--ox)}
h1{font:400 clamp(5rem,19vw,16rem)/1 var(--serif);letter-spacing:-.01em;margin:.24em 0 26px;font-optical-sizing:auto}
section[id]{scroll-margin-top:64px}
.lede{font-size:clamp(1.15rem,2vw,1.55rem);line-height:1.45;color:var(--ink2);max-width:42ch}
.lede em{font-family:var(--serif);color:var(--ox);font-size:1.08em}
.meta{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));border-top:1px solid var(--ink);margin-top:clamp(40px,6vw,64px)}
.meta div{padding:18px 20px 0 0}
.meta div+div{padding-left:20px;border-left:1px solid var(--line)}
.meta dt{font:500 12px var(--cond);letter-spacing:.2em;text-transform:uppercase;color:var(--ink3);margin-bottom:6px}
.meta dd{font-size:15px;line-height:1.45}

/* film */
.film{padding:0 var(--pad) clamp(60px,9vw,120px);max-width:1500px;margin:0 auto}
.fmt{display:flex;justify-content:flex-end;margin-bottom:12px}
.fmt button{font:500 13px var(--cond);letter-spacing:.16em;padding:9px 16px;border:1px solid var(--ink);background:transparent;color:var(--ink);cursor:pointer;transition:background-color .2s,color .2s}
.fmt button+button{border-left:0}
.fmt button.on{background:var(--ink);color:var(--paper)}
.frame{background:var(--night);box-shadow:0 50px 100px -50px rgba(18,17,16,.55)}
.frame video{display:block;width:100%;height:auto;aspect-ratio:16/9;background:var(--night)}
.frame.tall{background:transparent;box-shadow:none}
.frame.tall video{aspect-ratio:9/16;width:auto;height:min(82vh,820px);max-width:100%;margin:0 auto;box-shadow:0 50px 100px -50px rgba(18,17,16,.55)}
.cap{margin-top:14px;font-size:14px;color:var(--ink3);text-align:center}

/* sections */
.sec{padding:clamp(70px,10vw,140px) var(--pad);border-top:1px solid var(--line)}
.sec>*{max-width:1400px;margin-left:auto;margin-right:auto}
.paper2{background:var(--paper2)}
.split{display:grid;grid-template-columns:minmax(0,1.1fr) minmax(0,1fr);gap:clamp(28px,5vw,80px);align-items:start;margin-top:22px;margin-bottom:clamp(40px,6vw,70px)}
h2{font:400 clamp(2.4rem,5.4vw,4.6rem)/1.02 var(--serif);letter-spacing:-.01em}
h2 em{color:var(--ox)}
.prose{color:var(--ink2);font-size:clamp(1rem,1.3vw,1.12rem)}
.prose p+p{margin-top:16px}
.prose b{color:var(--ink);font-weight:600}

/* ideas */
.idea{display:grid;grid-template-columns:minmax(0,320px) minmax(0,1fr);gap:clamp(30px,7vw,110px);align-items:center;padding:clamp(36px,5vw,60px) 0;border-top:1px solid var(--line)}
.idea.flip{grid-template-columns:minmax(0,1fr) minmax(0,320px)}
.idea.flip .phone{order:2}
.phone img{border-radius:34px;border:7px solid var(--ink);box-shadow:0 40px 70px -40px rgba(18,17,16,.6)}
.idea h3{font:400 clamp(1.9rem,3.4vw,3rem)/1.06 var(--serif);margin:14px 0 18px;max-width:18ch}
.idea-text>p:not(.tag){color:var(--ink2);max-width:52ch}
.facts{list-style:none;display:grid;grid-template-columns:repeat(2,minmax(0,1fr));border-top:1px solid var(--ink);margin-top:26px;max-width:520px}
.facts li{display:flex;justify-content:space-between;gap:12px;padding:11px 0;border-bottom:1px solid var(--line);font-size:13px}
.facts li:nth-child(odd){padding-right:16px}
.facts li:nth-child(even){padding-left:16px;border-left:1px solid var(--line)}
.facts span{color:var(--ink3);text-transform:uppercase;letter-spacing:.06em;font-size:11.5px}
.facts b{font-weight:400;text-align:right}

/* system */
.kpis{list-style:none;display:grid;grid-template-columns:repeat(4,minmax(0,1fr));border-top:1px solid var(--ink);border-bottom:1px solid var(--line);margin-bottom:clamp(30px,5vw,56px)}
.kpis li{padding:22px 20px 20px 0}
.kpis li+li{padding-left:20px;border-left:1px solid var(--line)}
.kpis b{display:block;font:400 clamp(3rem,6vw,4.6rem)/1 var(--serif)}
.kpis span{font:500 13px var(--cond);letter-spacing:.16em;text-transform:uppercase;color:var(--ink3)}
.found{display:grid;grid-template-columns:minmax(0,1.5fr) minmax(0,1fr);gap:14px;margin-bottom:14px}
.palette{display:grid;grid-template-columns:repeat(6,minmax(0,1fr));gap:12px;background:var(--white);padding:20px}
.palette i{display:block;aspect-ratio:3/4;margin-bottom:10px}
.palette b{display:block;font:500 13px var(--sans)}
.palette span{font:400 11.5px var(--mono);color:var(--ink3)}
.contrast{list-style:none;display:grid;gap:8px;align-content:start}
.contrast li{display:flex;justify-content:space-between;gap:12px;padding:14px 16px;font-size:13px}
.contrast b{font-weight:400}
.c1{background:var(--paper);color:var(--ink);box-shadow:inset 0 0 0 1px var(--line)}
.c2{background:var(--ox);color:var(--paper)}
.c3{background:var(--paper);color:var(--ink3);box-shadow:inset 0 0 0 1px var(--line)}
.c4{background:var(--night);color:var(--ink3d)}
.contrast .note{padding:6px 0 0;color:var(--success,#3E5A44);font:500 13px var(--cond);letter-spacing:.14em;text-transform:uppercase}
.type{background:var(--white);padding:clamp(18px,3vw,36px);margin-bottom:14px}
.spec{display:grid;grid-template-columns:minmax(0,1fr) 260px;gap:24px;align-items:baseline;padding:18px 0;border-bottom:1px solid var(--line)}
.spec:first-child{padding-top:0}.spec:last-child{border-bottom:0;padding-bottom:0}
.s1{font:400 clamp(2.6rem,6vw,4.6rem)/1 var(--serif)}
.s2{font:italic 400 clamp(2rem,4vw,3rem)/1 var(--serif)}
.s3{font:600 clamp(1.1rem,1.8vw,1.4rem)/1.2 var(--cond);letter-spacing:.14em;text-transform:uppercase}
.s4{font:400 clamp(1.1rem,1.8vw,1.35rem)/1.35 var(--sans)}
.s5{font:400 clamp(1.1rem,1.8vw,1.35rem)/1.3 var(--mono)}
.who b{display:block;font:600 14px var(--sans)}
.who span{font-size:14px;color:var(--ink3)}
.comps{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:14px}
.comps figure{background:var(--white);padding:clamp(16px,2.4vw,28px);display:grid;gap:14px;align-content:space-between}
.comps .w2{grid-column:span 2}
.comps .stack{align-content:start}
.comps img{margin:0 auto;max-height:420px;width:auto}
figcaption{font:500 13px var(--cond);letter-spacing:.16em;text-transform:uppercase;color:var(--ink3)}

/* screens gallery */
.gallery{display:grid;grid-auto-flow:column;grid-auto-columns:clamp(180px,20vw,250px);gap:clamp(14px,2vw,26px);overflow-x:auto;scroll-snap-type:x mandatory;scroll-padding-inline:var(--pad);padding:6px 4px 26px;max-width:none!important;margin-left:calc(-1 * var(--pad))!important;margin-right:calc(-1 * var(--pad))!important;padding-left:var(--pad);padding-right:var(--pad);scrollbar-width:thin;scrollbar-color:var(--ink3) transparent}
.gallery figure{scroll-snap-align:start}
.gallery img{border-radius:26px;border:6px solid var(--ink);box-shadow:0 24px 44px -26px rgba(18,17,16,.5);margin-bottom:12px}
.gal-nav{display:flex;gap:0;justify-content:flex-end}
.gal-nav button{width:52px;height:52px;border:1px solid var(--ink);background:transparent;font:400 18px var(--sans);color:var(--ink);cursor:pointer;transition:background-color .2s,color .2s}
.gal-nav button+button{border-left:0}
.gal-nav button:hover{background:var(--ink);color:var(--paper)}

/* prototype */
.dark{background:var(--night);color:var(--paper);border-top:0}
.dark .prose{color:var(--ink3d)}.dark .num{color:#C9A7A3}
.btn{display:inline-flex;align-items:center;gap:10px;text-decoration:none;font:600 15px var(--cond);letter-spacing:.14em;text-transform:uppercase;padding:17px 26px;background:var(--ox);color:var(--paper);border:0;cursor:pointer;transition:background-color .25s}
.btn:hover{background:var(--ox2)}
.btn.ghost{background:transparent;color:var(--paper);box-shadow:inset 0 0 0 1px rgba(241,237,228,.45)}
.btn.ghost:hover{box-shadow:inset 0 0 0 1px var(--paper);background:rgba(241,237,228,.06)}
.links{display:flex;flex-wrap:wrap;gap:12px;margin-top:24px}
.proto{position:relative;overflow:hidden;aspect-ratio:16/9;background:#0E0D0C;box-shadow:0 40px 90px -40px rgba(0,0,0,.6)}
.proto-poster{width:100%;height:100%;object-fit:cover;opacity:.28;filter:blur(6px) grayscale(.2);transform:scale(1.06)}
.proto-cta{position:absolute;inset:0;display:grid;place-content:center;justify-items:center;gap:12px;text-align:center;padding:16px}
.proto-cta p{font-size:13px;color:var(--ink3d)}
.proto.live{aspect-ratio:auto;height:min(86vh,900px)}
.proto iframe{width:100%;height:100%;border:0;display:block}

/* learned + next + footer */
.learn{list-style:none;display:grid;grid-template-columns:repeat(3,minmax(0,1fr));border-top:1px solid var(--ink);margin-top:22px;counter-reset:l}
.learn li{padding:26px 24px 10px 0;counter-increment:l}
.learn li+li{padding-left:24px;border-left:1px solid var(--line)}
.learn li::before{content:"0" counter(l);display:block;font:400 13px var(--mono);color:var(--ox);margin-bottom:14px}
.learn b{display:block;font:400 1.6rem/1.15 var(--serif);margin-bottom:10px}
.learn span{color:var(--ink2);font-size:15px}
.next{padding:clamp(60px,8vw,110px) var(--pad);text-align:center;border-top:1px solid var(--line)}
.next p{font:italic 400 clamp(2.2rem,4.4vw,3.4rem)/1.1 var(--serif);margin-bottom:28px}
.foot{padding:28px var(--pad) 40px;border-top:1px solid var(--line);color:var(--ink3);font-size:14px;text-align:center}
.foot b{color:var(--ink)}

/* reveal */
.js .rv{opacity:0;transform:translateY(26px);transition:opacity .9s var(--ease),transform .9s var(--ease)}
.js .rv.in{opacity:1;transform:none}

/* responsive */
@media (max-width:980px){
  .toc{display:none}
  .top{grid-template-columns:1fr auto}
  .meta{grid-template-columns:repeat(2,minmax(0,1fr))}
  .meta div:nth-child(3){padding-left:0;border-left:0}
  .split,.found{grid-template-columns:minmax(0,1fr)}
  .idea,.idea.flip{grid-template-columns:minmax(0,1fr);justify-items:start}
  .idea.flip .phone{order:0}
  .phone{max-width:280px}
  .kpis{grid-template-columns:repeat(2,minmax(0,1fr))}
  .kpis li:nth-child(3){padding-left:0;border-left:0}
  .learn{grid-template-columns:minmax(0,1fr)}
  .learn li+li{padding-left:0;border-left:0;border-top:1px solid var(--line)}
  .spec{grid-template-columns:minmax(0,1fr);gap:6px}
}
@media (max-width:600px){
  .mark{display:none}
  .meta{grid-template-columns:minmax(0,1fr)}
  .meta div+div{padding-left:0;border-left:0}
  .palette{grid-template-columns:repeat(3,minmax(0,1fr))}
  .facts{grid-template-columns:minmax(0,1fr)}
  .facts li:nth-child(odd){padding-right:0}
  .facts li:nth-child(even){padding-left:0;border-left:0}
  .comps{grid-template-columns:minmax(0,1fr)}
  .comps .w2{grid-column:auto}
  .proto.live{height:78vh}
  .frame.tall video{height:auto;width:100%}
}