.case-study{background:oklch(95% .009 80);color:var(--graphite)}
.case-study a:focus-visible,.case-study button:focus-visible{outline-color:var(--oxide)}
.project-header{padding:30px 0;border-color:oklch(80% .012 70)}
.project-header .brand-art{width:320px}
.return-link{display:flex;align-items:center;gap:18px;min-height:48px;font-size:15px}
.return-link span{font-size:24px;transition:transform .2s}.return-link:hover span{transform:translate(-3px,-3px)}
.project-opening{padding:64px var(--gutter) 0}
.project-kicker{display:flex;justify-content:space-between;gap:24px;font-size:12px;letter-spacing:.08em;color:var(--oxide)}
.project-heading{display:grid;grid-template-columns:1.65fr 1fr;align-items:end;gap:50px;margin:32px 0 52px}
.project-heading h1{font-size:clamp(52px,6.4vw,108px);line-height:1.03;letter-spacing:-.055em;margin:0;font-weight:400}
.project-deck{padding-bottom:6px;justify-self:end;max-width:350px;width:100%}
.project-deck>p{font-size:clamp(20px,1.7vw,28px);line-height:1.45;letter-spacing:-.025em}
.project-deck>a{display:flex;justify-content:space-between;align-items:center;gap:24px;border-bottom:1px solid oklch(78% .012 70);padding:18px 0 12px;margin-top:22px;font-size:14px}.project-deck>a span{font-size:24px}
.project-cover{margin:0}.project-cover>img{display:block;width:100%;height:clamp(420px,48vw,740px);object-fit:cover;object-position:center 62%}
.project-cover figcaption{display:flex;justify-content:space-between;gap:20px;padding:18px 0;font-size:13px;color:oklch(44% .01 60)}
.project-overview{margin:38px var(--gutter) 0;border-top:1px solid oklch(78% .012 70);border-bottom:1px solid oklch(78% .012 70);scroll-margin-top:30px}
.project-overview dl{display:grid;grid-template-columns:repeat(4,1fr);gap:30px;margin:0;padding:32px 0}.project-overview dt{font-size:11px;text-transform:uppercase;letter-spacing:.08em;color:var(--oxide);margin-bottom:14px}.project-overview dd{margin:0;font-size:17px;line-height:1.5}
.project-story{display:grid;grid-template-columns:1fr 1.8fr;gap:8vw;padding:110px var(--gutter)}
.story-index{position:sticky;top:40px;align-self:start;display:flex;flex-direction:column;align-items:stretch;gap:0;max-width:250px;font-size:15px}.story-index>p{font-size:11px;letter-spacing:.08em;color:var(--oxide);margin-bottom:24px}.story-index>a{border-top:1px solid oklch(80% .012 70);padding:17px 0;display:flex;gap:30px}.story-index>a span{font-size:12px;color:var(--oxide)}
.story-copy section{scroll-margin-top:48px}.story-copy section+section{margin-top:85px}.story-number{font-size:11px;letter-spacing:.09em;color:var(--oxide);margin-bottom:23px}
.case-study h2{font-size:clamp(34px,3.3vw,52px);line-height:1.12;letter-spacing:-.04em;font-weight:400}
.story-copy section>p:not(.story-number),.project-handover>div>p{font-size:18px;line-height:1.8;max-width:58ch;color:oklch(43% .01 60);margin-top:24px}
.project-sequence{display:grid;grid-template-columns:1fr 1.15fr;gap:8vw;padding:90px var(--gutter);background:var(--oxide);color:var(--ivory)}
.sequence-label{font-size:11px;letter-spacing:.09em;margin-bottom:28px}.sequence-copy>p:not(.sequence-label){font-size:17px;line-height:1.7;max-width:36ch;margin-top:25px}
.phase-controls{display:flex;gap:12px;margin-top:38px}.phase-controls button{background:none;color:inherit;border:1px solid color-mix(in oklch,var(--ivory) 55%,transparent);border-radius:28px;min-height:48px;padding:0 24px;cursor:pointer}.phase-controls button[aria-pressed=true]{background:var(--ivory);color:var(--oxide);border-color:var(--ivory)}.project-sequence button:focus-visible{outline-color:var(--ivory)}
.sequence-visual{align-self:center}.bay-diagram{display:grid;grid-template-columns:1fr 1fr;gap:18px}.bay{padding:24px;border:1px solid color-mix(in oklch,var(--ivory) 45%,transparent);text-align:center}.bay>span{font-size:10px;letter-spacing:.06em}.bay-door{height:120px;margin:25px 0;background:repeating-linear-gradient(0deg,transparent 0 13px,color-mix(in oklch,var(--ivory) 30%,transparent) 13px 14px);border:1px solid color-mix(in oklch,var(--ivory) 60%,transparent)}.bay strong{display:block;font-size:15px;font-weight:500;padding:14px 6px;border-top:1px solid color-mix(in oklch,var(--ivory) 40%,transparent)}
.bay-diagram[data-phase="1"] .bay:first-child,.bay-diagram[data-phase="2"] .bay:last-child{background:color-mix(in oklch,var(--graphite) 30%,var(--oxide))}
.phase-description{font-size:14px;line-height:1.65;margin-top:25px;min-height:3.3em}.diagram-note{font-size:11px;margin-top:8px;opacity:.8}
.project-handover{display:grid;grid-template-columns:1fr 1.8fr;gap:8vw;padding:110px var(--gutter);scroll-margin-top:30px}.project-handover>.story-number{padding-top:10px}
.project-return{display:inline-flex;align-items:center;gap:35px;font-size:15px;color:var(--oxide);min-height:48px;margin-top:30px}
.project-contact{padding:72px var(--gutter) 82px;background:var(--graphite);color:var(--ivory)}.project-contact>p{font-size:11px;letter-spacing:.09em;margin-bottom:32px}.project-contact>a{display:block;position:relative;font-size:clamp(44px,5.6vw,84px);line-height:1.08;letter-spacing:-.045em;padding-right:90px}.project-contact>a span{position:absolute;right:0;bottom:0;transition:transform .25s}.project-contact>a:hover span{transform:translate(5px,-5px)}.project-contact a:focus-visible{outline-color:var(--ivory)}
.project-footer{display:flex;align-items:center;justify-content:space-between;gap:28px;padding:24px var(--gutter);font-size:12px}.project-footer small{font-size:11px;color:oklch(44% .01 60)}.project-footer>a{min-height:44px;display:flex;align-items:center;white-space:nowrap}
@media(min-width:1800px){.case-study{--gutter:max(80px,calc((100vw - 1640px)/2))}}
@media(max-width:800px){.project-header .brand-art{width:230px}.project-heading{grid-template-columns:1fr;gap:28px}.project-deck{justify-self:start;max-width:none;display:flex;align-items:end;justify-content:space-between;gap:30px}.project-deck>a{min-width:180px}.project-story,.project-handover{grid-template-columns:1fr;gap:42px;padding-top:70px;padding-bottom:70px}.story-index{position:static;max-width:none;flex-direction:row;flex-wrap:wrap;gap:20px}.story-index>p{width:100%;margin-bottom:0}.story-index>a{gap:12px}.project-sequence{grid-template-columns:1fr;gap:50px;padding-top:65px;padding-bottom:65px}.sequence-copy>p:not(.sequence-label){max-width:50ch}.project-overview dl{grid-template-columns:1fr 1fr;gap:28px}.project-footer{flex-wrap:wrap}.project-footer small{order:3;width:100%}}
@media(max-width:540px){.project-header{padding:22px 0;gap:20px}.project-header .brand-art{width:190px}.return-link{font-size:12px;gap:8px}.return-link span{font-size:18px}.project-opening{padding-top:40px}.project-kicker{font-size:10px;flex-direction:column;gap:8px}.project-heading{margin:26px 0 32px}.project-heading h1{font-size:clamp(43px,10.6vw,58px)}.project-deck{display:block}.project-deck>p{font-size:21px}.project-deck>a{margin-top:16px}.project-cover>img{height:360px;object-position:53% center}.project-cover figcaption{font-size:11px;gap:14px}.project-overview{margin-top:24px}.project-overview dl{gap:24px 18px}.project-overview dd{font-size:15px}.story-index{gap:12px}.story-index>a{font-size:13px;gap:8px}.story-copy section>p:not(.story-number),.project-handover>div>p{font-size:16px}.story-copy section+section{margin-top:55px}.bay{padding:15px 10px}.bay>span{font-size:8px}.bay strong{font-size:12px}.bay-door{height:100px}.bay-diagram{gap:10px}.project-contact>a{padding-right:50px}.project-contact{padding-top:55px;padding-bottom:65px}}
@media(prefers-reduced-motion:reduce){.case-study *{scroll-behavior:auto;transition:none!important}}

/* Concise case-study sequence: proposition, visual, description, result, inquiry. */
.project-opening{padding-top:52px}
.project-heading{display:block;margin:32px 0 48px}
.project-heading h1{font-size:clamp(42px,4.6vw,76px);line-height:1.1;letter-spacing:-.045em;max-width:1100px}
.project-cover>img{height:clamp(430px,48vw,720px);object-position:center 65%}
.project-description{display:grid;grid-template-columns:1fr 1.8fr;gap:8vw;padding:90px var(--gutter) 100px}
.project-details{margin:0;max-width:270px}.project-details>div+div{margin-top:25px}.project-details dt{color:var(--oxide);font-size:11px;text-transform:uppercase;letter-spacing:.08em;margin-bottom:8px}.project-details dd{font-size:15px;line-height:1.6;margin:0}
.description-copy .section-label{font-size:11px;margin-bottom:24px}.description-copy h2{font-size:clamp(27px,2.6vw,40px);line-height:1.28;max-width:30ch}.description-copy>p:not(.section-label){font-size:18px;line-height:1.8;max-width:58ch;margin-top:24px;color:oklch(43% .01 60)}
.project-results{padding:75px var(--gutter) 80px;background:var(--oxide);color:var(--ivory)}
.results-heading{display:flex;justify-content:space-between;align-items:center;gap:30px;margin-bottom:55px}.results-heading>p{font-size:11px;letter-spacing:.09em}.results-heading h2{font-size:clamp(36px,3.6vw,54px)}
.results-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:5vw}.result{border-top:1px solid color-mix(in oklch,var(--ivory) 45%,transparent);padding-top:24px}.result-value{font-size:clamp(62px,6.8vw,104px);line-height:1.05;letter-spacing:-.055em;margin-bottom:30px}.result h3{font-size:20px;letter-spacing:-.025em;margin:0 0 14px;font-weight:500}.result>p:last-child{font-size:16px;line-height:1.7;max-width:34ch;color:color-mix(in oklch,var(--ivory) 87%,var(--oxide))}
.project-results .project-sequence{padding:65px 0 0;margin-top:65px;border-top:1px solid color-mix(in oklch,var(--ivory) 40%,transparent)}
.project-contact{padding-top:76px;padding-bottom:86px}.project-contact h2{font-size:clamp(38px,4.5vw,68px);line-height:1.1}.project-contact>a{display:flex;align-items:center;justify-content:space-between;gap:35px;font-size:23px;letter-spacing:-.025em;max-width:540px;padding:20px 0;border-bottom:1px solid color-mix(in oklch,var(--ivory) 40%,transparent);margin-top:30px}.project-contact>a span{position:static;font-size:32px}
@media(max-width:800px){.project-description{grid-template-columns:1fr;gap:42px;padding-top:60px;padding-bottom:65px}.project-details{display:grid;grid-template-columns:1fr 1fr;gap:25px;max-width:none}.project-details>div+div{margin-top:0}.results-grid{gap:25px}.result h3{font-size:18px}.result>p:last-child{font-size:15px}.project-results{padding-top:60px;padding-bottom:65px}}
@media(max-width:540px){.project-opening{padding-top:36px}.project-heading{margin:24px 0 30px}.project-heading h1{font-size:clamp(35px,9.4vw,48px)}.project-heading h1 br{display:none}.project-cover>img{height:360px;object-position:53% center}.description-copy h2{font-size:29px}.description-copy h2 br{display:none}.description-copy>p:not(.section-label){font-size:16px}.results-heading{display:block;margin-bottom:35px}.results-heading>p{margin-bottom:20px}.results-grid{grid-template-columns:1fr;gap:30px}.result{display:grid;grid-template-columns:95px 1fr;gap:10px 18px}.result-value{font-size:58px;grid-row:1/3;margin:0}.result h3{margin:0;font-size:18px}.result>p:last-child{grid-column:2}.result-word{font-size:40px;line-height:1.3}.project-results .project-sequence{margin-top:45px;padding-top:45px}.project-contact>a{font-size:20px}.project-contact{padding-top:60px;padding-bottom:60px}}

/* Quiet opening: identity, one statement, then uninterrupted photography. */
.project-header{border-bottom:0;padding-top:32px;padding-bottom:32px}
.project-opening{padding-top:68px}
.project-kicker{display:block;text-align:center;font-size:14px;font-weight:400;letter-spacing:0;color:oklch(47% .012 60)}
.project-heading{margin:22px 0 70px;text-align:center}
.project-heading h1{font-size:clamp(36px,3.8vw,64px);line-height:1.14;max-width:none;letter-spacing:-.045em}
.project-cover{margin:0 calc(-1 * var(--gutter))}
.project-cover>img{height:clamp(440px,52vw,800px);object-position:center 65%;filter:saturate(.8) contrast(1.025)}
.project-description{display:flex;flex-direction:column;gap:42px;padding:90px var(--gutter);max-width:1040px;margin:auto}
.description-copy>p:not(.section-label){font-size:clamp(20px,2vw,28px);line-height:1.65;color:var(--graphite);margin:0;max-width:none;letter-spacing:-.018em}
.project-details{display:grid;grid-template-columns:repeat(3,1fr);gap:28px;max-width:none;border-top:1px solid oklch(82% .012 70);padding-top:28px}
.project-details>div+div{margin:0}.project-details dt{font-size:11px;letter-spacing:.045em;color:oklch(48% .01 60);text-transform:none}.project-details dd{font-size:14px}
.visually-hidden{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip-path:inset(50%);white-space:nowrap;border:0}
@media(max-width:800px){.project-opening{padding-top:48px}.project-heading{margin-bottom:50px}.project-heading h1{max-width:19ch;margin:auto}.project-description{padding-top:65px;padding-bottom:65px}}
@media(max-width:540px){.project-header{padding-top:23px;padding-bottom:23px}.project-opening{padding-top:45px}.project-kicker{font-size:13px}.project-heading{margin-top:20px;margin-bottom:44px}.project-heading h1{font-size:clamp(32px,8.5vw,43px);max-width:17ch}.project-cover>img{height:390px;object-position:53% center}.project-description{gap:30px}.project-details{grid-template-columns:1fr;gap:18px}.project-details>div{display:grid;grid-template-columns:90px 1fr;gap:18px}.project-details dt{margin:0;line-height:1.6}.description-copy>p:not(.section-label){font-size:21px}}

/* Inset photograph and a directly scrollable results rail. */
.project-cover{margin:0;overflow:hidden;border-radius:6px;box-shadow:0 18px 50px -28px oklch(24% .01 60 / .38)}
.project-cover>img{height:clamp(420px,48vw,720px)}
.results-grid{display:flex;gap:22px;overflow-x:auto;overscroll-behavior-x:contain;scroll-snap-type:x mandatory;scrollbar-width:none;padding:4px 0 12px;cursor:grab;touch-action:pan-x pan-y;--rail-progress:0}
.results-grid::-webkit-scrollbar{display:none}.results-grid:focus-visible{outline:2px solid var(--ivory);outline-offset:8px}.results-grid.is-dragging{cursor:grabbing;scroll-snap-type:none;user-select:none}
.results-grid .result{display:flex;flex-direction:column;flex:0 0 clamp(300px,42vw,560px);min-height:380px;scroll-snap-align:start;border:0;border-radius:5px;background:var(--ivory);color:var(--graphite);padding:34px}
.results-grid .result-value{font-size:clamp(72px,7vw,104px);line-height:1.05;margin:0 0 48px}
.results-grid .result h3{font-size:22px;margin:0 0 15px;margin-top:auto}.results-grid .result>p:last-child{font-size:16px;line-height:1.7;color:oklch(44% .01 60);max-width:36ch}
.results-navigation{display:flex;align-items:center;justify-content:space-between;gap:36px;margin-top:22px}.results-progress{height:2px;background:color-mix(in oklch,var(--ivory) 28%,transparent);width:150px;overflow:hidden}.results-progress>span{display:block;background:var(--ivory);height:100%;width:33.333%;transform:translateX(calc(var(--rail-progress,0) * 200%))}
.results-controls{display:flex;gap:12px}.results-controls button{display:grid;place-items:center;width:48px;height:48px;border:1px solid color-mix(in oklch,var(--ivory) 55%,transparent);border-radius:50%;font-size:24px;line-height:1;background:transparent;color:var(--ivory);cursor:pointer;transition:background .2s,color .2s}.results-controls button:enabled:hover{background:var(--ivory);color:var(--oxide)}.results-controls button:disabled{opacity:.3;cursor:default}.project-results .results-controls button:focus-visible{outline-color:var(--ivory)}
@media(max-width:540px){.project-cover>img{height:360px}.results-grid{gap:14px}.results-grid .result{flex-basis:88%;min-height:355px;padding:26px}.results-grid .result-value{font-size:72px;margin-bottom:35px}.results-grid .result h3{font-size:20px}.results-grid .result>p:last-child{font-size:15px}.results-progress{width:110px}}

/* Preserve the approved deck framing before the quiet contact close. */
.case-study .stack-demo{margin-bottom:90px}
@media(max-width:720px){.case-study .stack-demo{margin-bottom:60px}}

/* A quiet photographic close to the project story. */
.project-detail{margin:0 var(--gutter) clamp(60px,7vw,110px)}
.project-detail img{display:block;width:100%;height:auto;border-radius:6px;box-shadow:0 18px 50px -28px oklch(24% .01 60 / .3)}
.project-detail figcaption{margin-top:18px;font-size:13px;line-height:1.6;color:oklch(48% .01 60)}

/* The final photograph opens from a quiet inset into the project detail. */
.detail-open{display:block;position:relative;width:100%;padding:0;border:0;background:var(--graphite);border-radius:6px;overflow:hidden;cursor:zoom-in;isolation:isolate}
.detail-open img{transition:transform 800ms cubic-bezier(.22,1,.36,1);box-shadow:none;border-radius:0}
.detail-expand{position:absolute;right:24px;bottom:24px;display:grid;place-items:center;width:48px;height:48px;border-radius:50%;background:var(--ivory);color:var(--graphite);font-size:25px;transition:transform 300ms}
.detail-open:focus-visible{outline:2px solid var(--oxide);outline-offset:6px}
@media(hover:hover){.detail-open:hover img{transform:scale(1.025)}.detail-open:hover .detail-expand{transform:rotate(45deg)}}
.project-detail figcaption{display:flex;justify-content:space-between;gap:20px}.project-detail figcaption>span:last-child{white-space:nowrap}.project-detail figcaption>span:last-child span{margin:0 12px;color:var(--oxide)}
.detail-viewer{border:0;padding:70px 32px 24px;background:var(--graphite);color:var(--ivory);max-width:calc(100vw - 40px);max-height:calc(100dvh - 40px);width:1400px;margin:auto;border-radius:6px;overscroll-behavior:contain}
.detail-viewer::backdrop{background:rgb(20 18 16 / .9)}.detail-viewer img{display:block;width:100%;height:auto;max-height:calc(100dvh - 185px);object-fit:contain}.detail-viewer p{margin:20px 0 0;font-size:12px;line-height:1.5;color:var(--ivory)}
.detail-close{position:absolute;right:28px;top:18px;min-height:40px;display:flex;align-items:center;gap:22px;font:inherit;font-size:13px;color:inherit;border:0;background:none;cursor:pointer}.detail-close span{font-size:28px}.detail-close:focus-visible{outline:2px solid var(--ivory);outline-offset:3px}
@media(max-width:600px){.project-detail figcaption{flex-direction:column;gap:5px}.detail-expand{width:40px;height:40px;right:14px;bottom:14px}.detail-viewer{padding:65px 14px 20px;max-width:calc(100vw - 24px)}.detail-close{right:16px}}
@media(prefers-reduced-motion:reduce){.detail-open img,.detail-expand{transition:none}}

/* Editorial chapters give the project room to explain its decisions. */
.chapter-label{font-size:11px;letter-spacing:.1em;line-height:1.5;margin-bottom:28px;color:var(--oxide)}
.project-description{display:grid;grid-template-columns:1fr 1fr;column-gap:9vw;padding:110px var(--gutter) 65px;max-width:none}
.project-description .description-copy h2,.handover-story h2{font-size:clamp(34px,4vw,58px);max-width:15ch}
.project-narrative p,.approach-copy p,.handover-story>p{font-size:18px;line-height:1.75;color:oklch(43% .01 60)}
.project-narrative p+p{margin-top:22px}.project-description .project-details{grid-column:2;margin-top:36px;width:100%}
.project-approach{padding:70px var(--gutter) 110px}.case-study .project-approach h2{font-size:clamp(52px,8.8vw,132px);line-height:1.02;letter-spacing:-.055em;color:var(--oxide)}
.approach-copy{display:grid;grid-template-columns:1fr 1fr;gap:55px;max-width:760px;margin:45px 0 0 auto}
.handover-story{display:grid;grid-template-columns:1fr 1fr;gap:9vw;padding:0 var(--gutter) 55px;align-items:end}.handover-story>p{max-width:46ch}
.company-facts{padding:95px var(--gutter) 70px;background:oklch(90% .018 74)}.company-facts-heading{display:flex;justify-content:space-between;align-items:start;gap:40px;margin-bottom:50px}.company-facts-heading h2{width:50%;font-size:clamp(34px,3.6vw,52px)}
.company-facts-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}.company-fact{padding:32px;background:var(--ivory);border-radius:6px;display:flex;flex-direction:column;min-height:360px;transition:transform 300ms cubic-bezier(.22,1,.36,1)}
.company-fact:nth-child(2){background:var(--oxide);color:var(--ivory)}.company-fact:nth-child(3){background:var(--graphite);color:var(--ivory)}
.company-fact-number{font-size:clamp(60px,6.3vw,96px);letter-spacing:-.065em;line-height:1;margin:0 0 46px}.company-fact-number>span{font-size:.5em;vertical-align:top;line-height:1.6;margin-right:5px}.company-fact h3{font-size:22px;line-height:1.2;font-weight:400;letter-spacing:-.025em;margin:0 0 14px}.company-fact>div>p{font-size:15px;line-height:1.65;opacity:.8;max-width:30ch}.fact-index{display:block;margin-top:auto;padding-top:32px;font-size:10px;letter-spacing:.08em;opacity:.65}
@media(hover:hover){.company-fact:hover{transform:translateY(-5px)}}
@media(max-width:800px){.project-description{grid-template-columns:1fr;gap:28px;padding-top:70px;padding-bottom:40px}.project-description .project-details{grid-column:1;margin-top:8px}.project-approach{padding-top:40px;padding-bottom:70px}.approach-copy{gap:25px;margin-top:30px}.handover-story{grid-template-columns:1fr;gap:28px}.company-facts-grid{grid-template-columns:1fr}.company-fact{min-height:300px}.company-fact-number{font-size:80px;margin-bottom:30px}.company-facts-heading{display:block}.company-facts-heading h2{width:auto}.company-facts{padding-top:65px}.company-fact>div>p{max-width:48ch}}
@media(max-width:480px){.approach-copy{grid-template-columns:1fr;gap:20px}.project-narrative p,.approach-copy p,.handover-story>p{font-size:17px}.company-fact{padding:28px}}
@media(prefers-reduced-motion:reduce){.company-fact{transition:none}.company-fact:hover{transform:none}}
.project-description .description-copy>p.chapter-label{font-size:11px;line-height:1.5;letter-spacing:.1em;color:var(--oxide);margin:0 0 28px}
.case-study .project-footer{background:var(--graphite);color:var(--ivory)}.case-study .project-footer a:focus-visible{outline-color:var(--ivory)}

/* One project story, revealed a chapter at a time. */
.challenge-story{padding:100px var(--gutter) 60px;display:grid;grid-template-columns:1fr 1.1fr;gap:9vw;align-items:start}
.challenge-context h2{max-width:19ch}
.challenge-story .project-details{display:grid;grid-template-columns:1fr;gap:20px;margin:40px 0 0;border:0;padding:0}
.challenge-story .project-details>div{display:grid;grid-template-columns:90px 1fr;gap:16px;margin:0}
.challenge-story .project-details dt{margin:0;line-height:1.5}
.challenge-story .project-details dd{font-size:14px;line-height:1.5}
.challenge-chapter{border-top:1px solid oklch(81% .012 70)}
.challenge-chapter:last-child{border-bottom:1px solid oklch(81% .012 70)}
.challenge-chapter summary{display:grid;grid-template-columns:32px 1fr 24px;align-items:baseline;gap:20px;padding:28px 0;cursor:pointer;list-style:none;font-size:clamp(20px,1.8vw,26px);line-height:1.25;letter-spacing:-.025em;transition:color 180ms}
.challenge-chapter summary::-webkit-details-marker{display:none}
.challenge-chapter summary:focus-visible{outline:2px solid var(--oxide);outline-offset:5px}
.challenge-index{font-size:13px;letter-spacing:0;color:var(--oxide)}
.challenge-toggle{font-size:25px;justify-self:end;transition:transform 280ms}
.challenge-chapter[open] summary{color:var(--oxide)}
.challenge-chapter[open] .challenge-toggle{transform:rotate(45deg)}
.challenge-answer{padding:0 42px 30px 52px}
.challenge-answer p{font-size:18px;line-height:1.75;color:oklch(42% .01 60);margin:0;max-width:48ch}
@media(hover:hover){.challenge-chapter summary:hover{color:var(--oxide)}}
@supports(interpolate-size:allow-keywords){
 .challenge-chapter{interpolate-size:allow-keywords}
 .challenge-chapter::details-content{block-size:0;overflow:clip;transition:block-size 320ms ease,content-visibility 320ms;transition-behavior:allow-discrete}
 .challenge-chapter[open]::details-content{block-size:auto}
}
@media(max-width:800px){.challenge-story{grid-template-columns:1fr;gap:38px;padding-top:65px;padding-bottom:35px}.challenge-story .project-details{margin-top:28px;gap:12px}.challenge-chapter summary{gap:12px;padding:24px 0;font-size:21px;grid-template-columns:26px 1fr 20px}.challenge-answer{padding:0 0 26px 38px}.challenge-answer p{font-size:17px}}
@media(prefers-reduced-motion:reduce){.challenge-chapter summary,.challenge-toggle,.challenge-chapter::details-content{transition:none}}

/* Millbrook direction study: graphite framing and an oxide story surface. */
.challenge-bold{margin-top:90px;padding:0;background:var(--graphite);color:var(--ivory);grid-template-columns:.85fr 1.15fr;gap:0;align-items:stretch}
.challenge-bold .challenge-context{padding:80px clamp(32px,5vw,80px) 70px var(--gutter);display:flex;flex-direction:column;align-items:start}
.challenge-bold .chapter-label{color:var(--ivory);opacity:.7;margin-bottom:48px}
.challenge-bold .challenge-context h2{font-size:clamp(40px,4.4vw,68px);line-height:1.08;max-width:13ch}
.challenge-bold .project-details{margin-top:auto;padding-top:64px;width:100%}
.challenge-bold .project-details dt{color:var(--ivory);opacity:.6}
.challenge-bold .project-details dd{color:var(--ivory)}
.challenge-bold .challenge-chapters{border-left:1px solid rgb(255 255 255 / .16)}
.challenge-bold .challenge-chapter{border:0;border-bottom:1px solid rgb(255 255 255 / .16);padding:0 clamp(25px,4vw,64px);transition:background-color 320ms}
.challenge-bold .challenge-chapter:last-child{border-bottom:0}
.challenge-bold .challenge-chapter[open]{background:var(--oxide)}
.challenge-bold .challenge-chapter summary{grid-template-columns:100px 1fr 24px;gap:24px;padding:32px 0;align-items:center;font-size:clamp(23px,2.5vw,38px);color:var(--ivory)}
.challenge-bold .challenge-index{font-size:clamp(64px,6.2vw,96px);letter-spacing:-.075em;line-height:1;color:var(--ivory);opacity:.36;transition:opacity 250ms}
.challenge-bold .challenge-chapter[open] .challenge-index{opacity:1}
.challenge-bold .challenge-toggle{font-size:30px}
.challenge-bold .challenge-answer{padding:0 0 56px 124px;position:relative}
.challenge-bold .challenge-answer::before{content:"";position:absolute;left:45px;top:7px;bottom:60px;width:1px;background:rgb(255 255 255 / .4)}
.challenge-bold .challenge-answer h3{font-size:clamp(24px,2.3vw,34px);font-weight:400;letter-spacing:-.035em;line-height:1.2;margin:0 0 22px;max-width:20ch}
.challenge-bold .challenge-answer p{color:var(--ivory);opacity:.85;font-size:17px;line-height:1.7;max-width:38ch}
.challenge-bold .challenge-chapter summary:focus-visible{outline-color:var(--ivory);outline-offset:0}
@media(hover:hover){.challenge-bold .challenge-chapter:not([open]):hover{background:rgb(255 255 255 / .04)}.challenge-bold .challenge-chapter summary:hover .challenge-index{opacity:1}}
@media(max-width:1050px){.challenge-bold{grid-template-columns:1fr 1.3fr}.challenge-bold .challenge-chapter summary{grid-template-columns:64px 1fr 20px;gap:18px}.challenge-bold .challenge-index{font-size:64px}.challenge-bold .challenge-answer{padding-left:82px}.challenge-bold .challenge-answer::before{left:27px}}
@media(max-width:800px){.challenge-bold{margin-top:55px;grid-template-columns:1fr}.challenge-bold .challenge-context{padding:48px var(--gutter)}.challenge-bold .chapter-label{margin-bottom:28px}.challenge-bold .challenge-context h2{font-size:44px;max-width:18ch}.challenge-bold .project-details{padding-top:0;margin-top:32px}.challenge-bold .challenge-chapters{border-left:0;border-top:1px solid rgb(255 255 255 / .16)}.challenge-bold .challenge-chapter{padding:0 var(--gutter)}.challenge-bold .challenge-chapter summary{padding:26px 0;font-size:26px}.challenge-bold .challenge-answer{padding:0 0 38px 82px}.challenge-bold .challenge-answer::before{bottom:42px}.challenge-bold .challenge-answer h3{font-size:26px}}
@media(max-width:400px){.challenge-bold .challenge-chapter summary{grid-template-columns:48px 1fr 18px;gap:14px;font-size:23px}.challenge-bold .challenge-index{font-size:50px}.challenge-bold .challenge-answer{padding-left:0}.challenge-bold .challenge-answer::before{display:none}.challenge-bold .challenge-context h2{font-size:39px}}
@media(prefers-reduced-motion:reduce){.challenge-bold .challenge-chapter,.challenge-bold .challenge-index{transition:none}}

/* Give the story the scale of a chapter, and carry its dark canvas onward. */
.challenge-bold{min-height:100vh;min-height:100svh}
.challenge-bold .challenge-context{padding-top:clamp(90px,12vh,160px);padding-bottom:clamp(80px,10vh,140px)}
.challenge-bold .challenge-chapters{background:var(--oxide);border-left:0;display:flex;flex-direction:column;padding:clamp(48px,7vh,90px) 0}
.challenge-bold .challenge-chapter{border-bottom-color:rgb(255 255 255 / .22)}
.challenge-bold .challenge-chapter[open]{flex-grow:1;background:transparent}
.challenge-bold .challenge-chapter summary{padding-top:40px;padding-bottom:40px}
.challenge-bold .challenge-answer{padding-top:18px;padding-bottom:70px}
.challenge-bold .challenge-answer::before{top:24px;bottom:74px}
.challenge-bold .challenge-answer h3{margin-bottom:30px}
.challenge-bold .challenge-answer p{font-size:18px;line-height:1.8}
.challenge-bold + .project-approach{background:var(--graphite);color:var(--ivory);padding-top:clamp(100px,14vh,180px);padding-bottom:clamp(120px,16vh,200px);min-height:75vh}
.challenge-bold + .project-approach .chapter-label{color:var(--ivory);opacity:.65}
.case-study .challenge-bold + .project-approach h2{color:var(--ivory);max-width:16ch}
.challenge-bold + .project-approach .approach-copy{margin-top:64px;padding-top:34px;border-top:2px solid var(--oxide)}
.challenge-bold + .project-approach .approach-copy p{color:var(--ivory);opacity:.8}
@media(hover:hover){.challenge-bold .challenge-chapter:not([open]):hover{background:rgb(255 255 255 / .035)}}
@media(max-width:800px){.challenge-bold .challenge-context{padding-top:64px;padding-bottom:64px}.challenge-bold .challenge-chapters{padding:28px 0 38px}.challenge-bold .challenge-chapter summary{padding-top:30px;padding-bottom:30px}.challenge-bold .challenge-answer{padding-top:14px;padding-bottom:48px}.challenge-bold .challenge-answer::before{top:20px;bottom:52px}.challenge-bold .challenge-answer p{font-size:17px}.challenge-bold + .project-approach{min-height:0;padding-top:80px;padding-bottom:96px}.challenge-bold + .project-approach .approach-copy{margin-top:40px}}