.case-page { --brand: #0d50a1; --brand-deep: #073571; --brand-pale: #d8e8f6; }
.case-page .reveal { opacity: 1; transform: none; transition: none; }
.case-page .site-header nav a, .case-page .header-cta { font-size: 11px; }
.case-header { background: color-mix(in srgb, var(--paper) 94%, transparent); }
.case-section { display: grid; grid-template-columns: minmax(110px, .22fr) minmax(0, 1.78fr); border-top: 1px solid var(--ink); }
.section-rail { padding: 42px 3vw; border-right: 1px solid var(--ink); }
.section-rail span { display: block; color: var(--brand); font-family: var(--font-display); font-size: 42px; line-height: 1; }
.section-rail p { margin: 15px 0 0; font-size: 9px; font-weight: 800; letter-spacing: .13em; text-transform: uppercase; }
.case-section-main { min-width: 0; padding: clamp(70px, 8vw, 130px) clamp(24px, 6vw, 100px); }
.case-section h2 { max-width: 1100px; margin: 0; font-family: var(--font-sans); font-size: clamp(43px, 5.4vw, 78px); font-weight: 720; letter-spacing: -.045em; line-height: 1; }
.case-section h3 { margin: 0; font-family: var(--font-sans); font-weight: 720; letter-spacing: -.03em; }
.case-intro { margin-bottom: 70px; }
.case-intro > p:last-child { max-width: 780px; margin: 30px 0 0; color: var(--muted); font-size: 19px; line-height: 1.6; }

.case-hero { border-bottom: 1px solid var(--ink); }
.case-hero-meta { display: flex; justify-content: space-between; padding: 19px 3vw; border-bottom: 1px solid var(--rule); }
.case-hero-meta p { margin: 0; color: var(--muted); font-size: 9px; font-weight: 800; letter-spacing: .13em; text-transform: uppercase; }
.case-hero-grid { display: grid; grid-template-columns: 1.35fr .65fr; min-height: 760px; }
.case-hero-copy { display: flex; flex-direction: column; justify-content: center; padding: clamp(70px, 8vw, 130px) 5vw; background: var(--brand); color: var(--fixed-light); }
.case-hero-copy .kicker { color: var(--acid); }
.case-hero-copy h1 { font-size: clamp(72px, 10vw, 155px); }
.case-hero-copy h1 em { color: var(--acid); }
.case-hero-deck { max-width: 720px; margin: 46px 0 0; font-size: clamp(20px, 2vw, 30px); line-height: 1.3; }
.case-hero-side { display: flex; flex-direction: column; justify-content: space-between; padding: clamp(40px, 5vw, 76px); background: var(--acid); color: var(--on-acid); }
.hero-number strong { display: block; font-family: var(--font-display); font-size: clamp(130px, 16vw, 230px); font-weight: 600; letter-spacing: -.09em; line-height: .8; }
.hero-number span { display: block; max-width: 210px; margin-top: 25px; font-size: 11px; font-weight: 800; letter-spacing: .1em; line-height: 1.4; text-transform: uppercase; }
.case-hero-side dl { margin: 50px 0 0; }
.case-hero-side dl div { padding: 17px 0; border-top: 1px solid var(--ink); }
.case-hero-side dt { margin-bottom: 5px; font-size: 9px; font-weight: 850; letter-spacing: .13em; text-transform: uppercase; }
.case-hero-side dd { margin: 0; font-size: 13px; }
.plain-summary { display: grid; grid-template-columns: .72fr 1.28fr; gap: clamp(30px, 5vw, 80px); padding: clamp(42px, 5vw, 72px) 3vw; border-bottom: 1px solid var(--ink); background: var(--paper); color: var(--ink); }
.plain-summary h2 { max-width: 560px; margin: 12px 0 0; font-family: var(--font-sans); font-size: clamp(34px, 4vw, 58px); font-weight: 720; letter-spacing: -.045em; line-height: 1; }
.plain-summary dl { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); margin: 0; border: 1px solid var(--ink); }
.plain-summary dl div { min-height: 190px; padding: 24px; border-left: 1px solid var(--ink); }
.plain-summary dl div:first-child { border-left: 0; }
.plain-summary dt { margin-bottom: 28px; font-size: 9px; font-weight: 850; letter-spacing: .11em; text-transform: uppercase; }
.plain-summary dd { margin: 0; font-size: 15px; line-height: 1.5; }
.case-disclaimer { display: grid; grid-template-columns: .3fr 1.7fr; align-items: center; gap: 30px; padding: 24px 3vw; background: var(--fixed-dark); color: var(--fixed-light); }
.case-disclaimer strong { color: var(--acid); font-size: 12px; letter-spacing: .16em; }
.case-disclaimer p { max-width: 920px; margin: 0; color: #c7c4bc; font-size: 12px; }

.case-brief { background: var(--white); }
.case-brief .case-section-main > h2 { max-width: 1180px; }
.brief-grid { display: grid; grid-template-columns: repeat(2, 1fr); margin-top: 70px; border-top: 1px solid var(--ink); border-left: 1px solid var(--ink); }
.brief-grid > div { min-height: 190px; padding: 28px; border-right: 1px solid var(--ink); border-bottom: 1px solid var(--ink); }
.brief-grid span, .audit-method span, .persona-detail span, .strategy-chain span, .brief-row span, .application-grid span { display: block; margin-bottom: 17px; color: var(--brand); font-size: 9px; font-weight: 850; letter-spacing: .13em; text-transform: uppercase; }
.brief-grid p { margin: 0; font-size: 19px; line-height: 1.4; }

.audit-method { display: grid; grid-template-columns: repeat(3, 1fr); margin-bottom: 60px; border: 1px solid var(--ink); }
.audit-method > div { min-height: 130px; padding: 23px; border-right: 1px solid var(--ink); }
.audit-method > div:last-child { border-right: 0; }
.audit-method p, .audit-method a { margin: 0; font-size: 14px; font-weight: 650; line-height: 1.5; }
.audit-method a { text-underline-offset: 4px; }
.audit-method a:hover { color: var(--brand); }
.featured-source-video { display: grid; grid-template-columns: minmax(300px, .72fr) minmax(0, 1.28fr); margin: 0 0 55px; border: 1px solid var(--ink); background: var(--white); }
.source-video-player { display: grid; place-items: center; min-height: 610px; padding: 24px; background: var(--ink); }
.source-video-player video { display: block; width: auto; max-width: 100%; height: min(68vh, 650px); max-height: 100%; background: #000; object-fit: contain; }
.source-video-copy { display: flex; flex-direction: column; align-items: flex-start; justify-content: center; padding: clamp(32px, 5vw, 72px); }
.source-video-copy h3 { max-width: 720px; font-size: clamp(38px, 4.2vw, 64px); line-height: 1; }
.source-video-copy > p:not(.kicker) { max-width: 680px; margin: 24px 0; color: var(--muted); font-size: 17px; line-height: 1.6; }
.source-video-copy dl { width: 100%; margin: 0 0 28px; border-top: 1px solid var(--rule); }
.source-video-copy dl div { display: flex; justify-content: space-between; gap: 25px; padding: 12px 0; border-bottom: 1px solid var(--rule); font-size: 12px; }
.source-video-copy dt { font-weight: 800; }
.source-video-copy dd { margin: 0; color: var(--muted); text-align: right; }
.source-video-copy small { max-width: 620px; margin-top: 18px; color: var(--muted); font-size: 11px; line-height: 1.5; }
.evidence-guide { display: flex; align-items: baseline; justify-content: space-between; gap: 30px; margin: 0 0 24px; padding: 18px 0; border-top: 1px solid var(--ink); border-bottom: 1px solid var(--ink); }
.evidence-guide strong { font-size: 14px; font-weight: 800; text-transform: uppercase; }
.evidence-guide p { max-width: 650px; margin: 0; color: var(--muted); font-size: 15px; }
.ad-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; }
.ad-card { overflow: hidden; border: 1px solid var(--ink); background: var(--white); }
.ad-visual { position: relative; display: block; aspect-ratio: 9 / 12; overflow: hidden; border-bottom: 1px solid var(--ink); background: #ddd; }
.ad-visual img { width: 100%; height: 100%; object-fit: cover; object-position: center top; transition: transform 300ms ease; }
.ad-visual:hover img { transform: scale(1.025); }
.source-chip { position: absolute; right: 12px; bottom: 12px; padding: 7px 9px; background: var(--acid); color: var(--on-acid); font-size: 8px; font-weight: 850; letter-spacing: .08em; text-transform: uppercase; }
.text-ad { display: flex; flex-direction: column; justify-content: space-between; padding: 24px; background: var(--brand); color: var(--white); text-decoration: none; }
.text-ad > span { align-self: flex-end; padding: 5px 8px; border: 1px solid var(--white); font-size: 9px; font-weight: 850; letter-spacing: .12em; }
.text-ad strong { font-family: var(--font-display); font-size: clamp(31px, 3vw, 49px); font-style: italic; font-weight: 600; line-height: 1.05; }
.text-ad small { color: var(--acid); font-size: 9px; font-weight: 850; letter-spacing: .1em; text-transform: uppercase; }
.ad-copy { padding: 24px; }
.ad-type { margin: 0 0 16px; color: var(--brand); font-size: 10px; font-weight: 850; letter-spacing: .1em; text-transform: uppercase; }
.ad-copy h3 { font-family: var(--font-sans); font-size: 22px; font-weight: 760; letter-spacing: -.025em; }
.ad-copy > p:not(.ad-type) { min-height: 70px; margin: 13px 0 25px; color: var(--muted); font-size: 15px; line-height: 1.55; }
.ad-copy dl { margin: 0; padding-top: 14px; border-top: 1px solid var(--rule); }
.ad-copy dl div { display: flex; justify-content: space-between; gap: 12px; margin-top: 8px; font-size: 10px; letter-spacing: .04em; text-transform: uppercase; }
.ad-copy dt { font-weight: 800; }
.ad-copy dd { margin: 0; color: var(--muted); text-align: right; }
.pattern-grid { display: grid; grid-template-columns: repeat(3, 1fr); margin-top: 70px; border: 1px solid var(--ink); }
.pattern-grid > div { min-height: 280px; padding: 30px; border-right: 1px solid var(--ink); }
.pattern-grid > div:last-child { border-right: 0; }
.pattern-grid span { font-size: 9px; font-weight: 850; letter-spacing: .13em; text-transform: uppercase; }
.pattern-grid strong { display: block; margin: 28px 0 18px; font-family: var(--font-display); font-size: clamp(31px, 3vw, 48px); font-weight: 600; line-height: 1; }
.pattern-grid p { margin: 0; font-size: 14px; }
.pattern-accent { background: var(--acid); }

.motion-proof,
.customer-voice { margin-top: clamp(52px, 7vw, 100px); padding-top: clamp(38px, 5vw, 70px); border-top: 1px solid var(--ink); }
.motion-proof-head,
.customer-voice-head { display: grid; grid-template-columns: minmax(0, 1.1fr) minmax(280px, .9fr); gap: clamp(30px, 6vw, 90px); align-items: end; margin-bottom: 28px; }
.motion-proof-head h3,
.customer-voice-head h3 { max-width: 780px; margin-top: 10px; font-family: var(--font-display); font-size: clamp(38px, 5vw, 72px); font-weight: 600; letter-spacing: -.045em; line-height: .98; }
.motion-proof-head > p,
.customer-voice-head > p { margin: 0; color: var(--muted); font-size: 15px; line-height: 1.65; }
.classification-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); border-top: 1px solid var(--ink); border-left: 1px solid var(--ink); }
.classification-grid > div { min-height: 210px; padding: 26px; border-right: 1px solid var(--ink); border-bottom: 1px solid var(--ink); }
.classification-grid strong { display: block; color: var(--brand); font-family: var(--font-display); font-size: clamp(58px, 7vw, 94px); font-weight: 600; letter-spacing: -.06em; line-height: .82; }
.classification-grid span,
.gap-map span,
.voice-conclusion span { display: block; margin-top: 24px; font-size: 9px; font-weight: 850; letter-spacing: .12em; line-height: 1.35; text-transform: uppercase; }
.classification-grid p,
.gap-map p,
.voice-conclusion p { margin: 12px 0 0; color: var(--muted); font-size: 13px; line-height: 1.55; }
.gap-map { display: grid; grid-template-columns: .85fr repeat(4, minmax(0, 1fr)); margin-top: 18px; background: var(--fixed-dark); color: var(--fixed-light); }
.gap-map > div { min-height: 230px; padding: 24px; border-right: 1px solid #4d4d4d; }
.gap-map > div:last-child { border-right: 0; }
.gap-map .gap-map-label { background: var(--brand); }
.gap-map .gap-map-label span { margin-top: 0; }
.gap-map strong { display: block; margin-top: 25px; font-size: 17px; line-height: 1.25; }
.gap-map p { color: #c7c4bc; }
.gap-map .gap-map-label p { color: #d8e8f6; }
.method-boundary { margin: 18px 0 0; padding: 18px 21px; background: var(--brand-pale); color: var(--muted); font-size: 12px; line-height: 1.55; }
.method-boundary strong { color: var(--ink); }
.voice-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); border-top: 1px solid var(--ink); border-left: 1px solid var(--ink); }
.voice-grid figure { min-height: 320px; margin: 0; padding: clamp(27px, 4vw, 48px); border-right: 1px solid var(--ink); border-bottom: 1px solid var(--ink); background: var(--white); }
.voice-grid blockquote { margin: 0; font-family: var(--font-display); font-size: clamp(31px, 3.4vw, 49px); font-weight: 600; letter-spacing: -.035em; line-height: 1.04; }
.voice-grid figcaption { display: flex; flex-direction: column; gap: 7px; margin-top: 38px; }
.voice-grid figcaption a { color: var(--brand); font-size: 11px; font-weight: 850; text-underline-offset: 4px; }
.voice-grid figcaption span { color: var(--muted); font-size: 9px; font-weight: 800; letter-spacing: .1em; text-transform: uppercase; }
.voice-conclusion { display: grid; grid-template-columns: 180px 1fr; gap: 30px; padding: 23px 27px; background: var(--brand); color: var(--white); }
.voice-conclusion span { margin: 0; color: var(--acid); }
.voice-conclusion p { margin: 0; color: var(--white); font-size: 14px; }

.strategy-section { background: var(--brand-pale); }
.persona-card { margin-top: 70px; border: 1px solid var(--ink); background: var(--white); }
.persona-title { display: grid; grid-template-columns: .5fr 1fr .6fr; align-items: center; gap: 25px; padding: 28px; border-bottom: 1px solid var(--ink); }
.persona-title p, .persona-title span { margin: 0; font-size: 9px; font-weight: 800; letter-spacing: .1em; text-transform: uppercase; }
.persona-title strong { font-family: var(--font-display); font-size: clamp(28px, 3vw, 46px); font-weight: 600; line-height: 1; }
.persona-title span { text-align: right; }
.persona-detail { display: grid; grid-template-columns: repeat(4, 1fr); }
.persona-detail > div { min-height: 230px; padding: 27px; border-right: 1px solid var(--ink); }
.persona-detail > div:last-child { border-right: 0; background: var(--acid); }
.persona-detail p { margin: 0; font-size: 15px; }
.boundary-note { margin: 0; padding: 16px 27px; border-top: 1px solid var(--ink); color: var(--muted); font-size: 11px; }
.boundary-note strong { color: var(--ink); }
.strategy-chain { display: grid; grid-template-columns: 1fr auto 1fr auto 1fr auto 1fr; align-items: stretch; margin-top: 70px; }
.strategy-chain > div { min-height: 220px; padding: 25px; border: 1px solid var(--ink); background: var(--white); }
.strategy-chain > i { display: grid; place-items: center; min-width: 38px; font-style: normal; font-size: 20px; }
.strategy-chain p { margin: 0; font-size: 16px; }
.strategy-chain .chain-payoff { background: var(--brand); color: var(--white); }
.chain-payoff span { color: var(--acid); }
.big-idea { margin: 80px 0 0; padding: 55px 0 0; border-top: 1px solid var(--ink); color: var(--brand); font-family: var(--font-display); font-size: clamp(50px, 8vw, 120px); font-style: italic; line-height: .95; }
.big-idea span { display: block; margin-bottom: 23px; color: var(--ink); font-family: var(--font-sans); font-size: 9px; font-style: normal; font-weight: 850; letter-spacing: .14em; text-transform: uppercase; }

.execution-section { background: var(--white); }
.concept-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; }
.concept-card { min-height: 430px; padding: 32px; border: 1px solid var(--ink); background: var(--paper); }
.concept-primary { background: var(--acid); }
.concept-no { font-size: 9px; font-weight: 850; letter-spacing: .12em; text-transform: uppercase; }
.concept-card h3 { margin-top: 42px; font-size: clamp(37px, 4vw, 59px); line-height: 1; }
.concept-card > p { margin: 24px 0 30px; font-size: 15px; }
.concept-card ul { margin: 0; padding: 20px 0 0; border-top: 1px solid var(--ink); list-style: none; }
.concept-card li { margin-top: 8px; font-size: 11px; font-weight: 700; }
.hero-concept { display: grid; grid-template-columns: .65fr 1.35fr; margin-top: 80px; border: 1px solid var(--ink); }
.spec-creative { position: relative; display: flex; flex-direction: column; min-width: 0; margin: 0; overflow: hidden; background: var(--ink); color: var(--white); }
.spec-creative img { width: 100%; min-height: 760px; flex: 1; object-fit: cover; object-position: center; }
.spec-creative-overlay { position: absolute; inset: 0 0 74px; display: flex; flex-direction: column; justify-content: flex-end; padding: clamp(24px, 4vw, 48px); background: linear-gradient(180deg, rgba(0,0,0,.02) 40%, rgba(0,0,0,.82) 100%); }
.spec-creative-overlay span, .spec-creative-overlay small { font-size: 10px; font-weight: 800; letter-spacing: .1em; text-transform: uppercase; }
.spec-creative-overlay span { color: var(--acid); }
.spec-creative-overlay strong { max-width: 560px; margin: 16px 0; font-family: var(--font-sans); font-size: clamp(34px, 4vw, 60px); line-height: 1; }
.spec-creative figcaption { min-height: 74px; padding: 16px 20px; color: #d7d4ce; font-size: 11px; line-height: 1.45; }
.phone-mock { min-height: 840px; padding: 18px; background: var(--ink); color: var(--white); }
.phone-top { display: flex; justify-content: space-between; padding: 2px 5px 16px; font-size: 9px; }
.phone-top i { width: 60px; height: 7px; border-radius: 9px; background: #444; }
.story-frame { position: relative; display: flex; flex-direction: column; justify-content: center; min-height: 190px; padding: 25px; border-top: 1px solid #5b5b5b; }
.story-frame > span { position: absolute; top: 14px; right: 14px; font-size: 8px; font-weight: 800; }
.story-frame strong { font-family: var(--font-display); font-size: clamp(28px, 3vw, 44px); font-weight: 600; line-height: 1.05; }
.frame-one { background: var(--brand); }
.frame-two { background: #e7e0d0; color: var(--ink); }
.frame-three { align-items: center; background: var(--acid); color: var(--ink); text-align: center; }
.frame-four { background: var(--brand-deep); }
.frame-four small { margin-top: 17px; color: var(--acid); font-size: 9px; font-weight: 800; letter-spacing: .1em; text-transform: uppercase; }
.face-split { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; margin-bottom: 20px; }
.face-split i { display: grid; place-items: center; min-height: 70px; border: 1px solid var(--ink); font-size: 9px; font-style: normal; font-weight: 850; }
.timer-face { margin-bottom: 15px; font-family: var(--font-sans); font-size: clamp(55px, 7vw, 96px); font-weight: 800; letter-spacing: -.07em; line-height: 1; }
.brief-sheet { padding: clamp(35px, 5vw, 75px); }
.brief-sheet h3 { margin-bottom: 40px; font-size: clamp(42px, 5vw, 68px); line-height: 1; }
.brief-row { display: grid; grid-template-columns: .35fr 1.65fr; gap: 20px; padding: 17px 0; border-top: 1px solid var(--rule); }
.brief-row span { margin: 0; }
.brief-row p { margin: 0; font-size: 16px; line-height: 1.55; }
.deliverables { display: flex; flex-wrap: wrap; gap: 7px; margin-top: 30px; }
.deliverables span { padding: 7px 9px; background: var(--brand-pale); color: var(--brand-deep); font-size: 8px; font-weight: 800; letter-spacing: .08em; text-transform: uppercase; }
.script-board { margin-top: 70px; border: 1px solid var(--ink); }
.script-head { display: flex; justify-content: space-between; padding: 18px 23px; background: var(--ink); color: var(--white); }
.script-head p { margin: 0; font-size: 9px; font-weight: 800; letter-spacing: .1em; text-transform: uppercase; }
.script-board ol { margin: 0; padding: 0; list-style: none; }
.script-board li { display: grid; grid-template-columns: .2fr .35fr 1.45fr; gap: 25px; padding: 23px; border-top: 1px solid var(--ink); }
.script-board li:first-child { border-top: 0; }
.script-board li span { color: var(--brand); font-size: 11px; font-weight: 850; }
.script-board li strong { font-size: 12px; text-transform: uppercase; }
.script-board li p { margin: 0; font-size: 14px; }
.hook-bank { display: grid; grid-template-columns: .65fr 1.35fr; gap: 70px; margin-top: 80px; padding-top: 70px; border-top: 1px solid var(--ink); }
.hook-bank h3 { font-size: clamp(44px, 5vw, 72px); line-height: 1; }
.hook-bank ol { margin: 0; padding: 0; counter-reset: hooks; list-style: none; }
.hook-bank li { position: relative; padding: 16px 0 16px 48px; border-top: 1px solid var(--rule); font-size: 17px; counter-increment: hooks; }
.hook-bank li::before { content: counter(hooks, decimal-leading-zero); position: absolute; left: 0; color: var(--brand); font-family: var(--font-display); font-size: 22px; }
.hook-bank li span { display: block; margin-bottom: 4px; color: var(--muted); font-size: 8px; font-weight: 850; letter-spacing: .11em; text-transform: uppercase; }

.testing-section { background: var(--acid); color: var(--on-acid); }
.test-table { border: 1px solid var(--ink); background: var(--white); }
.test-row { display: grid; grid-template-columns: .15fr 1.1fr 1.1fr .8fr .85fr; }
.test-row > span { padding: 18px; border-top: 1px solid var(--ink); border-right: 1px solid var(--ink); font-size: 12px; }
.test-row > span:last-child { border-right: 0; }
.test-head { background: var(--fixed-dark); color: var(--fixed-light); }
.test-head > span { border-top: 0; border-color: #5b5b5b; font-size: 8px; font-weight: 850; letter-spacing: .1em; text-transform: uppercase; }
.test-row:not(.test-head) > span:first-child { color: var(--brand); font-family: var(--font-display); font-size: 25px; }
.measurement-note { display: grid; grid-template-columns: .4fr 1.6fr; gap: 30px; margin-top: 35px; padding: 25px; border: 1px solid var(--ink); }
.measurement-note strong { font-size: 11px; letter-spacing: .08em; text-transform: uppercase; }
.measurement-note p { margin: 0; font-size: 13px; }
.report-prototype { margin-top: 55px; padding: clamp(28px, 4vw, 54px); border: 1px solid var(--ink); background: #f7f7f3; }
.report-prototype-head { display: grid; grid-template-columns: minmax(0, 1.15fr) minmax(280px, .85fr); gap: 40px; align-items: end; }
.report-prototype-head h3 { max-width: 760px; font-size: clamp(36px, 4vw, 62px); line-height: 1; }
.report-prototype-head > p { margin: 0; color: var(--muted); font-size: 15px; line-height: 1.6; }
.report-status { display: grid; grid-template-columns: auto 1fr minmax(260px, .8fr); gap: 18px; align-items: center; margin: 28px 0 18px; padding: 14px 16px; border: 1px solid var(--rule); background: var(--white); }
.report-status span { padding: 7px 9px; background: var(--ink); color: var(--white); font-size: 8px; font-weight: 850; letter-spacing: .1em; text-transform: uppercase; }
.report-status strong { font-size: 14px; }
.report-status p { margin: 0; color: var(--muted); font-size: 12px; line-height: 1.45; }
.report-card-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 16px; }
.report-card { overflow: hidden; border: 1px solid var(--rule); border-radius: 16px; background: var(--white); box-shadow: 0 8px 28px rgba(18, 18, 18, .06); }
.report-card > img { display: block; width: 100%; aspect-ratio: 4 / 3; object-fit: cover; background: #ececec; }
.report-card-body { padding: 18px; }
.report-format { display: block; margin-bottom: 7px; color: var(--brand); font-size: 9px; font-weight: 850; letter-spacing: .08em; text-transform: uppercase; }
.report-card h4 { margin: 0 0 15px; font-size: 25px; line-height: 1.05; }
.report-card dl { margin: 0; border-top: 1px solid var(--rule); }
.report-card dl div { display: flex; justify-content: space-between; gap: 18px; padding: 9px 0; border-bottom: 1px solid var(--rule); font-size: 11px; }
.report-card dt { color: var(--muted); }
.report-card dd { margin: 0; padding: 3px 7px; border-radius: 999px; background: #ececea; font-weight: 750; }
.report-card-body > p { margin: 16px 0 0; color: var(--muted); font-size: 12px; line-height: 1.5; }
.report-card-body > p strong { color: var(--ink); }
.report-decision-grid { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); margin-top: 22px; border: 1px solid var(--ink); background: var(--white); }
.report-decision-grid > div { padding: 18px; border-right: 1px solid var(--ink); }
.report-decision-grid > div:last-child { border-right: 0; }
.report-decision-grid span { display: block; color: var(--brand); font-size: 8px; font-weight: 850; letter-spacing: .1em; text-transform: uppercase; }
.report-decision-grid strong { display: block; margin: 7px 0; font-size: 16px; }
.report-decision-grid p { margin: 0; color: var(--muted); font-size: 11px; line-height: 1.45; }
.report-source-stack { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 1px; margin-top: 22px; border: 1px solid var(--ink); background: var(--ink); }
.report-source-stack > div { padding: 16px; background: var(--white); }
.report-source-stack span { display: block; margin-bottom: 6px; color: var(--muted); font-size: 8px; font-weight: 850; letter-spacing: .08em; text-transform: uppercase; }
.report-source-stack a { color: var(--ink); font-size: 12px; font-weight: 800; text-decoration-thickness: 1px; text-underline-offset: 3px; }
.report-prototype .method-boundary { margin-bottom: 0; }

.application-section { background: var(--brand); color: var(--white); }
.application-section .kicker { color: var(--acid); }
.application-grid { display: grid; grid-template-columns: repeat(2, 1fr); margin-top: 70px; border-top: 1px solid #6e9bc8; border-left: 1px solid #6e9bc8; }
.application-grid > div { min-height: 230px; padding: 28px; border-right: 1px solid #6e9bc8; border-bottom: 1px solid #6e9bc8; }
.application-grid span { color: var(--acid); }
.application-grid p { margin: 0; font-size: 17px; }
.application-cta { display: flex; justify-content: space-between; align-items: center; gap: 30px; margin-top: 45px; padding: 25px; border: 1px solid #6e9bc8; }
.application-cta p { max-width: 650px; margin: 0; font-size: 14px; }
.application-cta .button { flex: 0 0 auto; }
.case-next { display: grid; grid-template-columns: repeat(2, 1fr); border-top: 1px solid var(--ink); }
.case-next a { display: flex; flex-direction: column; min-height: 210px; padding: 45px 3vw; background: var(--paper); text-decoration: none; }
.case-next a + a { align-items: flex-end; border-left: 1px solid var(--ink); text-align: right; }
.case-next a:hover { background: var(--acid); }
.case-next span { margin-bottom: 25px; font-size: 9px; font-weight: 850; letter-spacing: .13em; text-transform: uppercase; }
.case-next strong { font-family: var(--font-display); font-size: clamp(30px, 4vw, 57px); font-weight: 600; }

@media (max-width: 1050px) {
  .case-section { grid-template-columns: 90px minmax(0, 1fr); }
  .ad-grid { grid-template-columns: repeat(2, 1fr); }
  .persona-detail { grid-template-columns: repeat(2, 1fr); }
  .persona-detail > div:nth-child(2) { border-right: 0; }
  .persona-detail > div:nth-child(-n+2) { border-bottom: 1px solid var(--ink); }
  .strategy-chain { grid-template-columns: 1fr; }
  .strategy-chain > i { min-height: 35px; transform: rotate(90deg); }
  .concept-grid { grid-template-columns: 1fr; }
  .featured-source-video { grid-template-columns: 1fr; }
  .source-video-player { min-height: 540px; }
  .concept-card { min-height: auto; }
  .hero-concept { grid-template-columns: 1fr; }
  .phone-mock { display: grid; grid-template-columns: repeat(2, 1fr); min-height: auto; }
  .phone-top { grid-column: 1 / -1; }
  .story-frame { min-height: 280px; }
  .hook-bank { grid-template-columns: 1fr; gap: 45px; }
  .test-row { grid-template-columns: 70px 1fr 1fr; }
  .test-row > span:nth-child(4), .test-row > span:nth-child(5) { grid-column: auto; }
  .test-row:not(.test-head) > span:nth-child(4)::before { content: "Primary read: "; font-weight: 800; }
  .test-row:not(.test-head) > span:nth-child(5)::before { content: "Decision: "; font-weight: 800; }
  .test-head > span:nth-child(n+4) { display: none; }
  .motion-proof-head, .customer-voice-head { grid-template-columns: 1fr; align-items: start; }
  .classification-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .gap-map { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .gap-map .gap-map-label { grid-column: 1 / -1; min-height: auto; }
  .voice-grid { grid-template-columns: 1fr; }
  .voice-grid figure { min-height: auto; }
  .report-prototype-head { grid-template-columns: 1fr; gap: 16px; }
  .report-status { grid-template-columns: auto 1fr; }
  .report-status p { grid-column: 1 / -1; }
  .report-card-grid { grid-template-columns: 1fr 1fr; }
  .report-decision-grid { grid-template-columns: 1fr 1fr; }
  .report-decision-grid > div:nth-child(2) { border-right: 0; }
  .report-decision-grid > div:nth-child(-n+2) { border-bottom: 1px solid var(--ink); }
}

@media (max-width: 760px) {
  .case-section { display: block; }
  .section-rail { display: flex; align-items: baseline; gap: 14px; padding: 22px 20px; border-right: 0; border-bottom: 1px solid var(--ink); }
  .section-rail span { font-size: 29px; }
  .section-rail p { margin: 0; }
  .case-section-main { padding: 75px 20px; }
  .case-hero-meta { padding: 15px 20px; }
  .case-hero-meta p:last-child { display: none; }
  .case-hero-grid { grid-template-columns: 1fr; }
  .case-hero-copy { min-height: 630px; padding: 75px 20px; }
  .case-hero-copy h1 { font-size: clamp(68px, 23vw, 108px); line-height: .82; }
  .case-hero-side { min-height: 520px; padding: 48px 20px; }
  .plain-summary { grid-template-columns: 1fr; padding: 50px 20px; }
  .plain-summary dl { grid-template-columns: 1fr; }
  .plain-summary dl div { min-height: 0; border-top: 1px solid var(--ink); border-left: 0; }
  .plain-summary dl div:first-child { border-top: 0; }
  .case-disclaimer { grid-template-columns: 1fr; gap: 8px; padding: 22px 20px; }
  .brief-grid, .audit-method, .ad-grid, .pattern-grid, .application-grid { grid-template-columns: 1fr; }
  .evidence-guide { align-items: flex-start; flex-direction: column; gap: 8px; }
  .source-video-player { min-height: auto; padding: 16px; }
  .source-video-player video { width: 100%; height: auto; max-height: 70vh; }
  .source-video-copy { padding: 38px 22px; }
  .source-video-copy dl div { align-items: flex-start; flex-direction: column; gap: 3px; }
  .source-video-copy dd { text-align: left; }
  .audit-method > div, .pattern-grid > div { border-right: 0; border-bottom: 1px solid var(--ink); }
  .audit-method > div:last-child, .pattern-grid > div:last-child { border-bottom: 0; }
  .ad-visual { aspect-ratio: 9 / 11; }
  .persona-title { grid-template-columns: 1fr; }
  .persona-title span { text-align: left; }
  .persona-detail { grid-template-columns: 1fr; }
  .persona-detail > div { min-height: auto; border-right: 0; border-bottom: 1px solid var(--ink); }
  .persona-detail > div:nth-child(2) { border-right: 0; }
  .persona-detail > div:last-child { border-bottom: 0; }
  .phone-mock { grid-template-columns: 1fr; }
  .spec-creative img { min-height: 620px; }
  .story-frame { min-height: 225px; }
  .script-head { align-items: flex-start; flex-direction: column; gap: 6px; }
  .script-board li { grid-template-columns: 65px 1fr; gap: 10px 15px; }
  .script-board li p { grid-column: 1 / -1; }
  .test-table { border-bottom: 0; }
  .test-row, .test-row.test-head { display: block; }
  .test-head { padding: 14px; }
  .test-head > span:first-child { display: block; padding: 0; border: 0; }
  .test-row:not(.test-head) { padding: 20px; border-bottom: 1px solid var(--ink); }
  .test-row > span { display: block; padding: 7px 0; border: 0; }
  .test-row:not(.test-head) > span:first-child { padding-bottom: 10px; }
  .test-row:not(.test-head) > span:nth-child(2)::before { content: "Question: "; font-weight: 800; }
  .test-row:not(.test-head) > span:nth-child(3)::before { content: "Variants: "; font-weight: 800; }
  .measurement-note { grid-template-columns: 1fr; gap: 10px; }
  .report-prototype { margin-top: 36px; padding: 22px 16px; }
  .report-card-grid, .report-source-stack { grid-template-columns: 1fr; }
  .report-status { display: flex; align-items: flex-start; flex-direction: column; gap: 8px; }
  .report-decision-grid { grid-template-columns: 1fr; }
  .report-decision-grid > div { border-right: 0; border-bottom: 1px solid var(--ink); }
  .report-decision-grid > div:last-child { border-bottom: 0; }
  .application-cta { align-items: flex-start; flex-direction: column; }
  .case-next { grid-template-columns: 1fr; }
  .case-next a + a { align-items: flex-start; border-top: 1px solid var(--ink); border-left: 0; text-align: left; }
  .classification-grid, .gap-map { grid-template-columns: 1fr; }
  .classification-grid > div { min-height: auto; }
  .gap-map .gap-map-label { grid-column: auto; }
  .gap-map > div { min-height: auto; border-right: 0; border-bottom: 1px solid #4d4d4d; }
  .voice-conclusion { grid-template-columns: 1fr; gap: 9px; }
}

@media (prefers-reduced-motion: reduce) {
  .ad-visual img { transition: none; }
}