/* Shared final D system. Project copy/media live in content/*.json. */
.case-page{--bg:#0f151b;--panel:#18212a;--text:#e7ecf1;--muted:#a5b2be;--line:#2b3743;--accent:#a99aff;background:var(--bg);color:var(--text);font-family:var(--font-kr),sans-serif;line-height:1.8;font-size:16px;}
.case-page *{box-sizing:border-box;min-width:0;}
.case-page a{color:inherit;text-decoration:none;}
.case-page img{display:block;max-width:100%;height:auto;}
.case-page h1,.case-page h2,.case-page h3,.case-page p,.case-page figure,.case-page dl{margin:0;}
.case-page ul{margin:0;padding:0;list-style:none;}
.case-page h1,.case-page h2,.case-page h3{word-break:keep-all;overflow-wrap:anywhere;}
.case-page p,.case-page dd{word-break:keep-all;overflow-wrap:anywhere;}
.case-page a:focus-visible{outline:2px solid var(--accent);outline-offset:5px;}
.skip{position:absolute;top:-100px;left:20px;z-index:100;background:var(--accent);color:#10151b!important;padding:12px;}
.skip:focus{top:10px;}
.case-header{display:flex;justify-content:space-between;align-items:center;gap:20px;padding:24px max(40px,calc((100vw - 1280px)/2));border-bottom:1px solid var(--line);}
.brand{font:800 21px/1 var(--font-display),sans-serif;letter-spacing:-1px;}
.brand span{color:var(--accent);}
.case-header nav{display:flex;align-items:center;gap:8px;font-size:12px;}
.case-header nav a{display:grid;place-items:center;min-width:34px;min-height:34px;border:1px solid var(--line);border-radius:50%;}
.case-header nav a:first-child{border:0;border-radius:0;margin-right:12px;}
.case-header nav a[aria-current]{background:var(--text);color:var(--bg);}
.variant-label{max-width:1280px;margin:24px auto 0;padding:0 40px;font:500 10px/1.6 var(--font-display),sans-serif;letter-spacing:.12em;color:var(--muted);}
.case-hero,.case-content,.chapter-nav{max-width:1280px;margin:auto;}
.case-hero{padding:72px 40px 0;}
.section-label{font:600 10px/1.5 var(--font-display),sans-serif;letter-spacing:.14em;color:var(--accent);margin-bottom:28px!important;}
.hero-kicker{font-size:15px;color:var(--muted);margin-bottom:22px!important;}
h1{font-size:clamp(40px,5.6vw,76px);line-height:1.18;letter-spacing:-.06em;font-weight:700;}
h1 em{font-style:normal;color:var(--accent);}
.hero-project{font-size:20px;font-weight:600;margin-top:30px!important;}
.hero-description{font-size:15px;color:var(--muted);margin-top:14px!important;}
.hero-image{margin-top:52px;border:1px solid var(--line);border-radius:12px;overflow:hidden;background:var(--panel);}
.hero-image img{width:100%;}
.metadata{display:grid;grid-template-columns:1fr 1.3fr .8fr 1.5fr;gap:32px;padding:36px 0 48px;}
.metadata dt{font:500 9px/1.5 var(--font-display),sans-serif;letter-spacing:.12em;color:var(--muted);margin-bottom:10px;}
.metadata dd{margin:0;font-size:13px;line-height:1.7;}
.chapter-nav{display:flex;flex-wrap:wrap;gap:10px 30px;padding:22px 40px;border-block:1px solid var(--line);font:500 10px/1.8 var(--font-display),sans-serif;color:var(--muted);}
.chapter-nav a:hover,.top-link:hover{color:var(--accent);}
.case-content{padding:0 40px;}
.case-section{padding:112px 0;border-bottom:1px solid var(--line);scroll-margin-top:30px;}
h2{font-size:clamp(32px,3.4vw,48px);line-height:1.3;letter-spacing:-.05em;font-weight:650;}
.body-copy{font-size:16px;color:var(--muted);line-height:1.95;}
.body-copy p+p{margin-top:20px;}
.overview-grid{display:grid;grid-template-columns:1fr 1fr;gap:80px;}
.contribution-panel{margin-top:48px;padding:30px 0;border-top:1px solid var(--line);display:grid;grid-template-columns:1fr 2fr;gap:40px;}
.contribution-panel h3{font:500 10px/1.6 var(--font-display),sans-serif;color:var(--muted);letter-spacing:.08em;}
.contribution-panel ul{display:grid;grid-template-columns:1fr 1fr;gap:12px 30px;}
.contribution-panel li{font-size:13px;line-height:1.8;padding-left:15px;position:relative;}
.contribution-panel li:before{content:'↗';position:absolute;left:0;color:var(--accent);}
.section-heading{display:flex;justify-content:space-between;align-items:flex-end;gap:50px;margin-bottom:56px;}
.section-heading>p{font-size:14px;color:var(--muted);}
.challenge{padding:36px 0;border-top:1px solid var(--line);}
.challenge-title{display:flex;gap:22px;align-items:baseline;}
.challenge-title>span{font:500 12px/1.5 var(--font-display),sans-serif;color:var(--accent);}
.challenge h3{font-size:23px;line-height:1.5;letter-spacing:-.03em;}
.challenge dl{margin-top:24px;display:grid;grid-template-columns:repeat(3,1fr);gap:28px;}
.challenge dt{font:600 10px/1.6 var(--font-display),sans-serif;color:var(--accent);margin-bottom:10px;}
.challenge dd{margin:0;font-size:14px;color:var(--muted);line-height:1.9;}
.case-page figcaption{color:var(--muted);font-size:11px;line-height:1.7;margin-top:12px;}
.editorial-photo{margin:30px 0 70px!important;}
.editorial-photo img{width:100%;max-height:500px;object-fit:cover;}
.design-module{margin-top:72px;}
.module-heading{max-width:650px;margin-bottom:28px;}
.module-heading>span{font:500 9px/1.5 var(--font-display),sans-serif;color:var(--accent);letter-spacing:.12em;}
.module-heading h3{font-size:25px;margin:12px 0!important;line-height:1.5;}
.module-heading p{font-size:14px;color:var(--muted);line-height:1.9;}
.module-heading code{font-size:12px;background:#ffffff09;padding:2px 4px;overflow-wrap:anywhere;}
.device-pair{display:grid;grid-template-columns:1fr .22fr;gap:5%;align-items:center;background:linear-gradient(130deg,#e5f1ed,#e5eaff);padding:6%;border-radius:12px;}
.device-pair .desktop-screen img{box-shadow:0 15px 45px #14283a24;border-radius:5px;}
.phone-screen img{border:5px solid #202a34;border-radius:16px;}
.device-pair figcaption{color:#4b5d6d;}
.motion-stage{height:560px;position:relative;overflow:hidden;background:#edf1f2;border-radius:8px;isolation:isolate;}
.motion-stage>img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;}
.motion-stage:after{content:'';position:absolute;inset:0;background:#0003;z-index:1;pointer-events:none;}
.motion-headline{position:absolute;inset:0;display:grid;place-items:center;text-align:center;z-index:2;font-size:clamp(26px,4vw,52px);line-height:1.4;font-weight:750;letter-spacing:-.03em;color:white;padding:24px;}
.motion-headline>span{display:block;}
.motion-headline .char{display:inline-block;}
.motion-hint{position:absolute;bottom:24px;left:0;right:0;text-align:center;font:500 9px/1.5 var(--font-display),sans-serif;color:#fff;z-index:2;letter-spacing:.15em;}
.motion-caption{margin-top:14px!important;font-size:11px;color:var(--muted);}
.tech-tags{display:flex;flex-wrap:wrap;gap:8px;margin-top:24px!important;}
.tech-tags li{border:1px solid var(--line);padding:6px 12px;border-radius:4px;font:500 10px/1.7 var(--font-display),sans-serif;}
.business-screens{display:grid;grid-template-columns:1fr .23fr;gap:4%;align-items:start;}
.business-screens img{width:100%;border:1px solid var(--line);border-radius:8px;}
.design-module>figure img{width:100%;border-radius:8px;}
.reflection h2{color:var(--accent);}
.reflection .body-copy{margin-top:36px;max-width:680px;}
.explore-links{display:flex;flex-wrap:wrap;gap:20px 32px;align-items:center;margin-top:36px;}
.explore-links a{border-bottom:1px solid #586373;padding:12px 0;font-size:13px;}
.explore-links .primary-link{background:var(--accent);color:#10151b;padding:14px 20px;border-radius:4px;border:0;font-weight:650;}
.explore-links a:hover{opacity:.8;}
.project-pagination{display:grid;grid-template-columns:1fr 1fr;margin-top:64px;border-block:1px solid var(--line);}
.project-pagination a{padding:28px 0;font-size:20px;}
.project-pagination a+a{text-align:right;}
.project-pagination small{display:block;font:500 9px/1.5 var(--font-display),var(--font-kr),sans-serif;color:var(--muted);margin-bottom:10px;}
.top-link{display:block;text-align:right;margin-top:30px;font:500 10px/1.7 var(--font-display),sans-serif;}
.case-footer{max-width:1280px;margin:auto;padding:32px 40px;display:flex;justify-content:space-between;gap:20px;font:500 9px/1.8 var(--font-display),sans-serif;color:var(--muted);letter-spacing:.1em;}
@media(max-width:1024px){.case-hero{padding-top:52px;}
.overview-grid{gap:40px;}
.metadata{gap:20px;}}
@media(max-width:768px){.case-header{padding:20px 24px;}
.variant-label{padding:0 24px;}
.case-hero{padding:46px 24px 0;}
.case-content{padding:0 24px;}
.case-section{padding-block:72px;}
.case-hero h1{font-size:clamp(35px,6.5vw,50px);}
.metadata{grid-template-columns:1fr 1fr;gap:24px;padding-bottom:30px;}
.chapter-nav{padding:18px 24px;gap:10px 20px;}
.overview-grid{grid-template-columns:1fr;gap:28px;}
.contribution-panel{grid-template-columns:1fr;gap:22px;}
.contribution-panel ul{gap:10px 24px;}
.section-heading{display:block;margin-bottom:32px;}
.section-heading>p{margin-top:20px;}
.challenge dl{grid-template-columns:1fr;gap:20px;}
.motion-stage{height:440px;}
.case-footer{padding-inline:24px;}}
@media(max-width:480px){.case-header{padding:18px 20px;}
.brand{font-size:18px;}
.case-header nav{gap:5px;}
.case-header nav a:first-child{margin-right:4px;}
.case-header nav a{min-width:30px;min-height:30px;}
.case-hero{padding-inline:20px;}
.case-content{padding-inline:20px;}
.variant-label{padding-inline:20px;font-size:9px;}
.case-hero h1{font-size:35px;}
.hero-kicker{font-size:13px;}
.hero-description{font-size:14px;}
.hero-project{font-size:18px;}
.hero-image{margin-top:32px;}
.metadata dd{font-size:12px;}
.metadata{gap:24px 16px;}
.chapter-nav{padding:16px 20px;font-size:9px;gap:10px 18px;}
h2{font-size:31px;}
.body-copy{font-size:15px;}
.contribution-panel ul{grid-template-columns:1fr;}
.challenge-title{gap:16px;}
.challenge h3{font-size:22px;}
.device-pair{grid-template-columns:1fr .27fr;gap:4%;padding:6% 4%;}
.phone-screen img{border-width:3px;border-radius:9px;}
.case-page figcaption{font-size:10px;}
.device-pair figcaption{font-size:9px;}
.business-screens{grid-template-columns:1fr;gap:24px;}
.business-screens figure:last-child{width:66%;margin:auto;}
.motion-stage{height:370px;}
.motion-headline{font-size:27px;}
.motion-hint{font-size:8px;}
.project-pagination{grid-template-columns:1fr;}
.project-pagination a+a{text-align:left;border-top:1px solid var(--line);}
.project-pagination a{font-size:18px;}
.explore-links{display:grid;gap:14px;}
.explore-links>a{width:fit-content;}
.case-footer{padding-inline:20px;flex-direction:column;gap:8px;}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto!important;}
*,*:before,*:after{animation:none!important;transition:none!important;}
.motion-hint{display:none;}}
.case-d main{max-width:1440px;margin:auto;display:grid;grid-template-columns:184px minmax(0,1fr);}
.case-d .variant-label,.case-d .case-hero{grid-column:1/-1;width:100%;}
.case-d .case-hero{display:grid;grid-template-columns:1.1fr 1fr;gap:36px;align-items:center;padding-top:56px;}
.case-d h1{font-size:clamp(36px,3.8vw,52px);}
.case-d .hero-image{margin-top:0;border-radius:8px;}
.case-d .metadata{grid-column:1/-1;border-top:1px solid var(--line);padding:28px 0;}
.case-d .chapter-nav{position:sticky;top:28px;align-self:start;flex-direction:column;gap:20px;padding:28px 20px 28px 40px;margin:0;border:0;}
.case-d .case-content{width:100%;padding-left:32px;border-left:1px solid var(--line);margin:0;}
.case-d .case-section{padding-block:80px;}
.case-d h2{font-size:clamp(31px,3.2vw,44px);}
.case-d .overview-grid{grid-template-columns:1fr;gap:28px;}
.case-d .body-copy{max-width:760px;font-size:16px;line-height:1.95;}
.case-d .contribution-panel{grid-template-columns:1fr;gap:20px;padding:28px;background:var(--panel);border:1px solid var(--line);border-radius:8px;margin-top:36px;}
.case-d .section-heading{display:block;margin-bottom:40px;}
.case-d .section-heading>p{margin-top:20px;}
.case-d .challenges{max-width:920px;}
.case-d .challenge{border:1px solid var(--line);border-radius:8px;background:var(--panel);padding:32px;margin-top:28px;}
.case-d .challenge:first-child{margin-top:0;}
.case-d .challenge-title{align-items:flex-start;gap:18px;padding-bottom:24px;border-bottom:1px solid var(--line);}
.case-d .challenge-title>span{display:grid;place-items:center;flex-shrink:0;width:32px;height:32px;border:1px solid #a99aff55;border-radius:5px;font-size:12px;}
.case-d .challenge-title h3{font-size:24px;line-height:1.5;letter-spacing:-.03em;}
.case-d .challenge dl{display:block;margin-top:24px;max-width:740px;}
.case-d .challenge dl>div{display:grid;grid-template-columns:116px minmax(0,1fr);gap:18px;margin-top:24px;}
.case-d .challenge dl>div:first-child{margin-top:0;}
.case-d .challenge dt{padding-top:3px;margin:0;color:var(--muted);}
.case-d .challenge dd{font-size:15px;line-height:1.95;}
.case-d .challenge dl>div:last-child{padding:24px;border:1px solid #a99aff38;border-left:2px solid var(--accent);border-radius:4px;background:#a99aff08;grid-template-columns:1fr;gap:10px;}
.case-d .challenge dl>div:last-child dt{color:var(--accent);}
.case-d .challenge dl>div:last-child dd{color:var(--text);}
.case-d .editorial-photo{width:100%;margin:28px 0 48px!important;padding:16px;background:var(--panel);border:1px solid var(--line);border-radius:8px;}
.case-d .editorial-photo img{border-radius:4px;max-height:460px;}
.case-d .editorial-photo figcaption{padding:2px 2px 0;}
.case-d .design-module{display:grid;grid-template-columns:minmax(200px,.8fr) minmax(0,1.2fr);gap:28px;align-items:start;padding:28px;border:1px solid var(--line);border-radius:8px;margin-top:28px;}
.case-d #design>h2{margin-bottom:40px;}
.case-d .module-heading{margin:0;}
.case-d .module-heading h3{font-size:22px;}
.case-d .module-heading p{font-size:14px;}
.case-d .device-pair{grid-template-columns:1fr .25fr;gap:4%;padding:5%;}
.case-d .motion-stage{height:390px;}
.case-d .motion-headline{font-size:28px;}
.case-d .tech-tags{grid-column:1/-1;margin-top:0!important;}
.case-d .business-screens{grid-template-columns:1fr;gap:24px;}
.case-d .business-screens figure:last-child{width:45%;margin:auto;}
.case-d .reflection{position:relative;}
.case-d .reflection h2{font-size:clamp(32px,3.8vw,50px);}
.case-d .reflection .body-copy{padding-left:24px;border-left:2px solid var(--accent);}
.case-d .project-pagination a{font-size:17px;}
@media(max-width:1024px){.case-d main{grid-template-columns:148px minmax(0,1fr);}
.case-d .chapter-nav{padding-left:24px;font-size:9px;}
.case-d .case-content{padding-inline:24px;}
.case-d .case-hero{grid-template-columns:1fr 1fr;}
.case-d .design-module{grid-template-columns:1fr;}
.case-d .tech-tags{grid-column:auto;}
.case-d .business-screens{grid-template-columns:1fr .26fr;gap:20px;}
.case-d .business-screens figure:last-child{width:auto;}
.case-d .challenge dl>div{grid-template-columns:94px minmax(0,1fr);gap:16px;}}
@media(max-width:768px){.case-d main{display:block;}
.case-d .case-hero{grid-template-columns:1fr;gap:30px;padding-top:46px;}
.case-d .metadata{grid-column:auto;}
.case-d .chapter-nav{position:static;flex-direction:row;border-block:1px solid var(--line);padding:18px 24px;gap:10px 20px;}
.case-d .case-content{border:0;}
.case-d .case-section{padding-block:64px;}
.case-d .challenge{padding:26px;}
.case-d .design-module{padding:24px;}
.case-d .motion-stage{height:400px;}}
@media(max-width:480px){.case-d .case-hero h1{font-size:35px;}
.case-d .case-content{padding-inline:20px;}
.case-d .chapter-nav{padding-inline:20px;}
.case-d .contribution-panel{padding:22px;}
.case-d .challenge{padding:22px 20px;}
.case-d .challenge-title{gap:14px;padding-bottom:20px;}
.case-d .challenge-title h3{font-size:22px;}
.case-d .challenge-title>span{width:27px;height:29px;font-size:11px;}
.case-d .challenge dl>div{grid-template-columns:1fr;gap:9px;}
.case-d .challenge dl>div:last-child{padding:18px 14px;margin-inline:-4px;}
.case-d .challenge dd{font-size:14px;line-height:1.95;}
.case-d .editorial-photo{padding:10px;}
.case-d .design-module{padding:18px;}
.case-d .motion-stage{height:340px;}
.case-d .motion-headline{font-size:24px;}
.case-d .business-screens{grid-template-columns:1fr;}
.case-d .business-screens figure:last-child{width:66%;}
.case-d .reflection .body-copy{padding-left:18px;font-size:15px;}}
.case-detail .screen-stack{display:grid;gap:24px;}
.case-detail .screen-stack img{width:100%;border-radius:6px;}
.case-detail .demo-note{font-size:13px;color:var(--muted);max-width:720px;margin-top:20px;line-height:1.9;}
.case-detail .evidence-note{padding:24px;border:1px solid #a99aff55;border-left:2px solid var(--accent);border-radius:6px;color:var(--muted);font-size:14px;line-height:1.9;}