/* Case study pages. Same system as the homepage (index.html): baby-blue ground,
   Hanken Grotesk + DM Mono, and the four-band stripe (chocolate, cocoa, gold, cream). */
:root{
  --sky:#DCE7F2; --linen:#EEF3F9; --mist:#C9D9EA; --blue-ink:#3E6A97; --paper:#FBFCFE;
  --choc:#3A2318; --cocoa:#6B4430; --gold:#C29A5B; --gold-ink:#7E5A26; --cream:#F1E6CF;
  --ink-soft:#5A4334; --line:rgba(58,35,24,.16); --line2:rgba(58,35,24,.3);
  --risk:#A93A27; --ok:#2C7150;
  --sans:"Hanken Grotesk","Helvetica Neue",Arial,sans-serif;
  --mono:"DM Mono",ui-monospace,SFMono-Regular,Menlo,monospace;
  --ease:cubic-bezier(.2,.8,.2,1);
  color-scheme:light;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
@media (prefers-reduced-motion:reduce){html{scroll-behavior:auto}}
body{margin:0;background:var(--sky);color:var(--choc);font-family:var(--sans);font-size:17px;line-height:1.6;-webkit-font-smoothing:antialiased;overflow-x:hidden}
a{color:inherit}
img{max-width:100%;display:block}
::selection{background:var(--choc);color:var(--linen)}
:focus-visible{outline:2px solid var(--choc);outline-offset:3px;border-radius:6px}
h1,h2,h3,h4{text-wrap:balance;margin:0}
p{margin:0}
.wrap{max-width:1240px;margin-inline:auto;padding-inline:clamp(16px,4.5vw,64px)}
.eyebrow{font-family:var(--mono);font-size:.76rem;letter-spacing:.16em;text-transform:uppercase;color:var(--cocoa)}
.it{font-family:var(--sans);font-style:normal;font-weight:300;letter-spacing:-.04em}
.lead{font-size:clamp(1.05rem,1.5vw,1.25rem);font-weight:300;color:var(--ink-soft);max-width:54ch}

.btn{display:inline-flex;align-items:center;gap:12px;min-height:52px;padding:0 26px;border-radius:999px;font:500 .95rem/1 var(--sans);text-decoration:none;border:1px solid transparent;cursor:pointer;transition:transform .25s var(--ease),background .2s}
.btn-dark{background:var(--choc);color:var(--linen)}
.btn-dark:hover{transform:translateY(-2px);background:#2A1810}
.btn-line{border-color:var(--choc);color:var(--choc);background:transparent}
.btn-line:hover{background:rgba(58,35,24,.06)}
.btn .arr{transition:transform .25s}
.btn:hover .arr{transform:translateX(4px)}

.bands{display:grid;gap:4px}
.bands i{display:block;height:10px;border-radius:10px}
.b1{background:var(--choc)}.b2{background:var(--cocoa)}.b3{background:var(--gold)}.b4{background:var(--cream)}

/* nav (same as homepage) */
.nav{position:sticky;top:env(safe-area-inset-top,0px);z-index:60;background:rgba(220,231,242,.92);border-bottom:1px solid var(--line)}
.nav-in{display:flex;align-items:center;gap:28px;min-height:68px}
.logo{display:flex;align-items:center;gap:12px;text-decoration:none}
.logo svg{width:30px;height:30px;flex:none}
.logo b{font-weight:700;font-size:.95rem;letter-spacing:.32em}
.logo span{font-weight:300;font-size:.95rem;letter-spacing:.32em}
.nav-links{display:flex;gap:28px;margin-left:auto;font-size:.92rem}
.nav-links a{text-decoration:none;color:var(--ink-soft)}
.nav-links a:hover{color:var(--choc)}
.nav .btn{min-height:44px;padding:0 18px;font-size:.86rem}
.progress{position:absolute;left:0;right:0;bottom:-1px;height:3px;display:grid;grid-template-rows:repeat(3,1px);transform-origin:left;transform:scaleX(0)}
.progress i:nth-child(1){background:var(--choc)}.progress i:nth-child(2){background:var(--gold)}.progress i:nth-child(3){background:var(--cocoa)}
@media (max-width:900px){.nav-links{display:none}}
@media (max-width:440px){.logo span{display:none}.nav .btn .arr{display:none}.nav-in{gap:12px}}

/* hero */
.c-hero{position:relative;overflow:hidden;padding-block:clamp(48px,8vw,104px) 0}
.c-stripes{position:absolute;top:0;right:0;width:min(46vw,620px);height:auto;pointer-events:none}
.c-stripes path{fill:none;stroke-width:30;stroke-dasharray:1;stroke-dashoffset:1;animation:draw 1.4s cubic-bezier(.65,0,.35,1) forwards}
.c-stripes .s1{stroke:var(--choc)}.c-stripes .s2{stroke:var(--cocoa);animation-delay:.1s}.c-stripes .s3{stroke:var(--gold);animation-delay:.2s}.c-stripes .s4{stroke:var(--cream);animation-delay:.3s}
@keyframes draw{to{stroke-dashoffset:0}}
@media (prefers-reduced-motion:reduce){.c-stripes path{animation:none;stroke-dashoffset:0}}
@media (max-width:900px){.c-stripes{display:none}}
.c-hero .wrap{position:relative;z-index:1}
.back{display:inline-flex;font-family:var(--mono);font-size:.76rem;letter-spacing:.12em;text-transform:uppercase;text-decoration:none;color:var(--ink-soft)}
.back:hover{color:var(--choc)}
.c-hero .eyebrow{display:block;margin-top:clamp(28px,4vw,44px)}
.c-hero h1{font-weight:600;font-size:clamp(2.8rem,7.4vw,6.4rem);line-height:.9;letter-spacing:-.06em;margin-top:22px;max-width:14ch}
.c-hero .lead{margin-top:28px;color:var(--choc)}
.nda{display:grid;grid-template-columns:auto minmax(0,1fr);gap:12px;align-items:start;margin-top:28px;max-width:62ch;padding:16px 20px;border-radius:18px;background:var(--linen);border:1px solid var(--line);font-size:.95rem}
.nda b{font-weight:600}
.lock{width:18px;height:18px;margin-top:3px;fill:none;stroke:var(--cocoa);stroke-width:1.6}
.facts{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));border-top:1px solid var(--line2);margin-top:clamp(40px,6vw,72px)}
.fact{padding:18px 18px 0;border-left:1px solid var(--line);display:grid;gap:6px;align-content:start;min-width:0}
.fact:first-child{border-left:0;padding-left:0}
.fact p{font-weight:600;font-size:1.05rem;line-height:1.3}
@media (max-width:820px){.facts{grid-template-columns:repeat(2,minmax(0,1fr))}.fact:nth-child(3){border-left:0;padding-left:0}.fact:nth-child(n+3){padding-top:22px}}
.c-banner{margin-top:clamp(40px,6vw,72px);border-radius:34px;padding:clamp(24px,5vw,64px);display:grid;place-items:center;min-height:clamp(300px,38vw,520px);overflow:hidden;box-shadow:0 50px 90px -50px rgba(58,35,24,.45)}
.c-banner.full{padding:0;min-height:0}
.c-banner.full img{width:100%;height:auto}
.c-banner .shot{width:100%;height:auto}
.c-bands{margin-block:clamp(40px,6vw,72px) 0}

/* body */
.c-body{display:grid;grid-template-columns:minmax(0,13rem) minmax(0,1fr);gap:clamp(24px,6vw,96px);padding-block:clamp(56px,8vw,112px)}
@media (max-width:820px){.c-body{grid-template-columns:minmax(0,1fr)}}
.toc{position:sticky;top:calc(100px + env(safe-area-inset-top,0px));align-self:start;display:grid;gap:10px}
@media (max-width:820px){.toc{display:none}}
.toc a{font-family:var(--mono);font-size:.72rem;letter-spacing:.12em;text-transform:uppercase;text-decoration:none;color:var(--ink-soft);padding-left:14px;border-left:3px solid var(--line);transition:border-color .3s,color .3s}
.toc a:hover{color:var(--choc)}
.toc a.on{color:var(--choc);border-left-color:var(--gold)}
.c-sec{display:grid;gap:20px;padding-block:clamp(40px,5vw,64px);border-top:1px solid var(--line2);scroll-margin-top:96px}
.c-sec:first-child{border-top:0;padding-top:0}
.c-sec h2{font-weight:600;font-size:clamp(2rem,4.2vw,3.4rem);letter-spacing:-.045em;line-height:.98}
.c-sec p{color:var(--ink-soft);max-width:62ch}
.c-sec a:not(.btn){text-underline-offset:3px;text-decoration-color:var(--gold)}
.c-sec ul.ticks{list-style:none;margin:0;padding:0;display:grid;gap:12px;max-width:62ch}
.c-sec ul.ticks li{display:grid;grid-template-columns:22px minmax(0,1fr);gap:12px;color:var(--ink-soft)}
.c-sec ul.ticks li::before{content:"";width:14px;height:5px;border-radius:5px;background:var(--gold);margin-top:.68em}
.c-sec ul.ticks b{color:var(--choc);font-weight:600}
.quote{font-weight:300;font-size:clamp(1.6rem,3.2vw,2.5rem);line-height:1.15;letter-spacing:-.03em;max-width:26ch;color:var(--choc)!important;padding-left:22px;border-left:4px solid var(--gold)}
.metrics{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:14px}
@media (max-width:640px){.metrics{grid-template-columns:minmax(0,1fr)}}
.metric{background:var(--linen);border:1px solid var(--line);border-radius:22px;padding:24px;display:grid;gap:8px}
.metric b{font-size:clamp(2.6rem,5vw,4rem);font-weight:600;letter-spacing:-.05em;line-height:1;font-variant-numeric:tabular-nums}
.metric span{font-size:.95rem;color:var(--ink-soft)}
.metric:nth-child(2){background:var(--cream)}
.metric:nth-child(3){background:var(--choc);color:var(--linen);border-color:var(--choc)}
.metric:nth-child(3) span{color:var(--cream)}
.pivot{display:grid;grid-template-columns:minmax(0,1fr) auto minmax(0,1fr);gap:14px;align-items:stretch}
@media (max-width:640px){.pivot{grid-template-columns:minmax(0,1fr)}.pivot .to{transform:rotate(90deg);justify-self:center}}
.pivot>div{border-radius:22px;padding:22px;display:grid;gap:8px;align-content:start}
.pivot b{font-weight:600;font-size:1.2rem}
.pivot .from{background:var(--linen);border:1px dashed var(--line2)}
.pivot .after{background:var(--choc);color:var(--linen)}
.pivot .after p{color:#D8C7B5}
.pivot .after .eyebrow{color:var(--gold)}
.pivot .to{display:grid;place-items:center;font-size:1.6rem;color:var(--cocoa)}
.flow{display:flex;flex-wrap:wrap;gap:8px;align-items:center}
.flow span{padding:9px 15px;border-radius:999px;font-size:.9rem;background:var(--cream);font-weight:500}
.flow span.main{background:var(--choc);color:var(--linen)}
.flow em{font-style:normal;color:var(--cocoa);font-size:1.3rem}
.tools{display:flex;flex-wrap:wrap;gap:6px}
.tools span{font-family:var(--mono);font-size:.7rem;letter-spacing:.06em;border:1px solid var(--line2);border-radius:999px;padding:6px 11px;color:var(--ink-soft)}
.walk{background:var(--choc);color:var(--linen);border-radius:28px;padding:clamp(24px,4vw,40px);border-top:0;margin-top:clamp(24px,4vw,40px)}
.walk .eyebrow{color:var(--gold)}
.walk p{color:#D8C7B5}
.walk .btn-dark{background:var(--sky);color:var(--choc);justify-self:start}
.walk .btn-dark:hover{background:var(--linen)}

/* figures */
.fig{margin:8px 0 0;display:grid;gap:10px}
.fig a{display:block;border-radius:20px;overflow:hidden;background:var(--paper);border:1px solid var(--line);box-shadow:0 30px 60px -40px rgba(58,35,24,.45);transition:transform .3s var(--ease)}
.fig a:hover{transform:translateY(-3px)}
.fig img{width:100%;height:auto}
.fig figcaption{font-family:var(--mono);font-size:.72rem;letter-spacing:.06em;color:var(--ink-soft);max-width:62ch}

/* next case */
.next{display:grid;grid-template-columns:minmax(0,1fr) auto;align-items:center;gap:20px;padding-block:clamp(40px,6vw,72px);border-top:1px solid var(--line2);text-decoration:none}
.next .eyebrow{display:block;margin-bottom:12px}
.next h3{font-weight:600;font-size:clamp(2rem,4.6vw,3.8rem);letter-spacing:-.05em;line-height:.95}
.next .circle{width:68px;height:68px;border-radius:50%;background:var(--choc);color:var(--linen);display:grid;place-items:center;font-size:1.3rem;transition:transform .35s var(--ease),background .25s}
.next:hover .circle{transform:translateX(6px);background:var(--gold);color:var(--choc)}

/* footer (same as homepage) */
footer{background:var(--sky);padding-block:72px 40px;overflow:hidden}
.foot-mega{font-weight:600;font-size:clamp(2.8rem,11vw,10.5rem);line-height:.86;letter-spacing:-.06em;margin-bottom:28px}
.foot-mega .dot{color:var(--gold)}
.foot-bands{display:grid;gap:5px;margin-bottom:36px}
.foot-bands i{display:block;height:16px;border-radius:0 16px 16px 0;margin-left:calc(-1 * clamp(16px,4.5vw,64px))}
.foot-bands i:nth-child(1){width:92%}.foot-bands i:nth-child(2){width:86%}.foot-bands i:nth-child(3){width:80%}.foot-bands i:nth-child(4){width:74%}
.foot-row{display:flex;flex-wrap:wrap;gap:14px 32px;justify-content:space-between;font-family:var(--mono);font-size:.74rem;letter-spacing:.1em;color:var(--ink-soft)}
.foot-row a{text-decoration:none}
.foot-row a:hover{color:var(--choc)}
.foot-links{display:flex;flex-wrap:wrap;gap:22px}

/* banner art */
.art-merge{display:grid;grid-template-columns:auto auto auto;align-items:center;gap:clamp(18px,4vw,56px)}
.art-merge .many{display:grid;grid-template-columns:repeat(4,clamp(26px,3.4vw,40px));gap:clamp(6px,1vw,10px)}
.art-merge .many i{aspect-ratio:1;border-radius:10px;background:var(--linen);display:grid;place-items:center}
.art-merge .many svg{width:45%;height:45%;fill:none;stroke:var(--choc);stroke-width:1.4;stroke-linecap:round;stroke-linejoin:round}
.art-merge .arrow{font-size:clamp(1.6rem,3vw,2.6rem);color:var(--choc);font-weight:300}
.one-screen{width:clamp(150px,24vw,320px);aspect-ratio:4/3;background:var(--paper);border-radius:16px;overflow:hidden;display:grid;grid-template-rows:auto 1fr;box-shadow:0 30px 50px -30px rgba(58,35,24,.4)}
.os-top{display:flex;gap:5px;padding:10px 12px;border-bottom:1px solid var(--line)}
.os-top span{width:8px;height:8px;border-radius:50%;background:var(--mist)}
.os-body{display:grid;grid-template-columns:22% 1fr}
.os-side{background:var(--linen);border-right:1px solid var(--line)}
.os-main{padding:14px;display:grid;gap:9px;align-content:start}
.os-main i{display:block;height:10px;border-radius:5px;background:var(--mist)}
.os-main i.h{height:14px;width:60%;background:var(--choc)}
.os-main i.s{width:45%;background:var(--gold)}
.art-alert{background:var(--linen);border-radius:24px;padding:30px;display:grid;gap:16px;width:min(100%,380px);box-shadow:0 30px 50px -30px rgba(0,0,0,.5)}
.art-alert span{font-family:var(--mono);font-size:.76rem;letter-spacing:.14em;text-transform:uppercase;color:var(--risk)}
.art-alert b{font-size:clamp(1.6rem,2.8vw,2.3rem);font-weight:600;letter-spacing:-.035em;line-height:1.05}
.art-alert .bar{height:10px;border-radius:10px;background:var(--mist);overflow:hidden}
.art-alert .bar i{display:block;height:100%;background:var(--gold);border-radius:10px}
.art-wave{display:flex;align-items:center;gap:8px;height:130px}
.art-wave i{width:10px;border-radius:10px;background:var(--choc)}

/* reveal */
.rv{transition:transform .9s var(--ease)}
.js .rv:not(.in){transform:translateY(22px)}
@media (prefers-reduced-motion:reduce){*,*::before,*::after{animation:none!important;transition:none!important}.js .rv:not(.in){transform:none}}