/* Long-form case studies: a concise brief, inspectable rationale, and an extended narrative. */
.case-hero h1{font-size:clamp(2.375rem,5.2vw,4.5rem);max-width:1050px}
.case-reading{display:flex;align-items:center;justify-content:space-between;gap:24px;margin-bottom:28px}
.case-reading .back-link{margin:0}
.case-reading>span{font-size:.75rem;color:var(--muted);font-weight:600}
.case-reading-preview{font-size:.6875rem;line-height:1.6;color:var(--muted);margin-top:20px}
.project-04 .case-reading-preview{color:#c7d1dd}
.case-hero .case-summary{max-width:850px;font-size:1.1875rem;line-height:1.7}
.case-thesis{margin-top:28px;max-width:850px;display:flex;flex-direction:column;gap:8px;border-left:3px solid var(--accent);padding-left:20px}
.case-thesis .eyebrow{color:var(--muted);font-size:.625rem}
.case-thesis>strong{font-size:1.25rem;font-weight:650;line-height:1.5;letter-spacing:-.02em;text-wrap:balance}
.case-hero .case-stats{margin-top:32px;padding-block:24px}
.case-status{display:flex;align-items:center;justify-content:space-between;gap:20px;margin-top:18px}
.case-status>span{font-size:.75rem;font-weight:600;color:var(--muted)}
.case-status>button{font-size:.8125rem;font-weight:650;color:var(--blue);min-height:44px;padding:0}
.case-context{padding-bottom:40px}
.business-brief{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:40px;padding-block:0 64px}
.business-brief>div{border-top:1px solid #a8aeac;padding-top:20px}
.business-brief h3{font-size:1rem;font-weight:700;letter-spacing:-.015em;margin-bottom:12px}
.business-brief p{font-size:.9375rem;line-height:1.75;color:var(--muted)}
.case-section-intro{margin-bottom:36px;max-width:850px}
.case-section-intro h2{font-size:clamp(2.25rem,4vw,3.5rem);line-height:1.08;letter-spacing:-.045em;margin-top:20px;font-weight:700}
.case-section-intro>p{margin-top:20px;font-size:1.0625rem;max-width:720px;color:var(--muted);line-height:1.7}
.case-architecture{padding-block:72px;background:color-mix(in srgb,var(--tint) 65%,#e6e8e5);border-block:1px solid #20252b20}
.case-page.ink .case-architecture{background:#e1e7ed}
figure{margin:0}
.experience-map{margin-top:40px}
.experience-map>figcaption{display:flex;justify-content:space-between;align-items:baseline;gap:24px;margin-bottom:20px}
.experience-map>figcaption>span:last-child{font-size:.75rem;color:var(--muted)}
.experience-map>ol{list-style:none;display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:12px;padding:0;margin:0}
.experience-map>ol>li{min-width:0}
.experience-map button{width:100%;height:100%;min-height:148px;text-align:left;display:flex;flex-direction:column;align-items:flex-start;padding:22px 20px;background:#f8f9f6;border:1px solid #aeb5b4;border-radius:8px;gap:10px;transition:background .2s,color .2s}
.experience-map button>span:first-child{font-size:.625rem;letter-spacing:.08em;font-weight:700;text-transform:uppercase;color:#56636c}
.experience-map button>strong{font-size:1.125rem;font-weight:700;line-height:1.3;letter-spacing:-.02em;text-wrap:balance}
.experience-map button>span:last-child{margin-top:auto;font-size:1.375rem;color:var(--accent)}
.experience-map button:hover{border-color:var(--accent)}
.experience-map button[aria-pressed=true]{background:var(--night);color:#fff;border-color:var(--night)}
.experience-map button[aria-pressed=true]>span{color:#ced8e2}
.architecture-details{margin-top:20px;border:1px solid #aeb5b4;background:#f8f9f6;padding:28px 32px;border-radius:8px;min-height:165px}
.architecture-details>div{display:grid;grid-template-columns:1.15fr 1fr;gap:40px}
.architecture-details p{font-size:1rem;line-height:1.75;max-width:65ch}
.architecture-details p+p{border-left:1px solid var(--line);padding-left:32px;color:var(--muted)}
.architecture-details strong{font-size:.6875rem;text-transform:uppercase;letter-spacing:.08em;display:block;color:var(--ink);margin-bottom:8px}
.system-map{margin-top:48px}
.system-map>ol{list-style:none;margin:20px 0 0;padding:0;display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:40px}
.system-map li{border-top:3px solid #71818a;padding-top:20px;position:relative}
.system-map li:not(:last-child):after{content:'→';position:absolute;right:-28px;top:-17px;font-size:1.5rem;color:#61717c}
.layer-meta{display:flex;flex-direction:column;gap:6px}
.layer-meta>span:first-child{font-size:.625rem;font-weight:700;text-transform:uppercase;letter-spacing:.08em}
.layer-meta>span:last-child{font-size:.75rem;font-weight:600;color:#505e68}
.system-map h3{font-size:1.375rem;font-weight:700;line-height:1.3;letter-spacing:-.025em;margin-top:20px;max-width:300px}
.system-map li p{font-size:.9375rem;line-height:1.75;margin-top:16px;color:#4d5b65}
.architecture-note{font-size:.75rem;line-height:1.7;max-width:850px;color:#505e68;margin-top:28px}
.priority-model{border-top:1px solid #aeb5b4;margin-top:40px;padding-top:32px;display:grid;grid-template-columns:1fr 1.35fr;gap:0 56px}
.priority-model h3{font-size:1.625rem;line-height:1.2;font-weight:700;max-width:300px}
.priority-model>div>p{font-size:1rem;line-height:1.7;margin-top:16px;max-width:400px;color:#4d5b65}
.rubric-columns{display:grid;grid-template-columns:1fr 1fr;gap:32px}
.rubric-columns h4{font-size:1rem;font-weight:700;letter-spacing:-.02em;margin-bottom:16px}
.rubric-columns dl{margin:0}
.rubric-columns dl>div{display:flex;justify-content:space-between;gap:16px;padding-block:10px;border-top:1px solid #bdc8cc}
.rubric-columns dt{font-size:.8125rem;line-height:1.5}
.rubric-columns dd{margin:0;font-size:.875rem;font-weight:700;font-variant-numeric:tabular-nums}
.priority-model .architecture-note{grid-column:1/-1}
.architecture-structure{border-top:1px solid #aeb5b4;margin-top:40px;padding-top:32px}
.structure-intro{display:grid;grid-template-columns:1fr 1.5fr;gap:48px;margin-bottom:28px}
.structure-intro h3{font-size:1.625rem;line-height:1.2;font-weight:700;max-width:340px}
.structure-intro>p{font-size:1rem;line-height:1.7;color:#4d5b65;max-width:65ch}
.ia-branches{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:28px}
.ia-branches h4{font-size:1rem;font-weight:700;border-top:2px solid #71818a;padding-top:18px;margin-bottom:14px}
.ia-branches ul{list-style:none;border-left:1px solid #899ba5;margin:0;padding:0 0 0 16px}
.ia-branches li{font-size:.875rem;line-height:1.6;color:#4d5b65;padding-block:5px;position:relative}
.ia-branches li:before{content:'';position:absolute;left:-16px;top:16px;width:8px;border-top:1px solid #899ba5}
.model-table table{width:100%;border-collapse:collapse;font-size:.9375rem;text-align:left}
.model-table th,.model-table td{padding:18px 20px 18px 0;border-bottom:1px solid #b5c3bd;vertical-align:top;line-height:1.7}
.model-table thead th{font-size:.625rem;font-weight:700;text-transform:uppercase;letter-spacing:.08em;border-top:2px solid #71818a;color:#465750}
.model-table tbody th{font-size:.9375rem;font-weight:650;width:20%;color:var(--ink)}
.model-table td{color:#4d5b65}
.model-equation{margin-top:24px;padding:20px 24px;background:#f8f9f6;border:1px solid #aeb5b4;border-radius:8px;font-size:1rem;line-height:1.6;font-weight:650;letter-spacing:-.015em}
.case-rationale{padding-block:72px 80px}
.decision-records{margin-top:40px}
.decision-record{display:grid;grid-template-columns:.72fr 1.55fr;gap:64px;border-top:1px solid #b2b7b4;padding-block:36px}
.decision-record:last-child{padding-bottom:0}
.decision-record>header{display:flex;flex-direction:column;align-items:flex-start;gap:16px}
.decision-number{font-size:2.75rem;font-weight:450;letter-spacing:-.06em;line-height:1;color:var(--accent)}
.decision-record h3{font-size:1.625rem;font-weight:700;line-height:1.22;letter-spacing:-.035em;max-width:330px}
.decision-explanation>p{font-size:1rem;line-height:1.8;color:var(--muted)}
.decision-explanation strong{display:block;font-size:.6875rem;font-weight:700;letter-spacing:.08em;text-transform:uppercase;color:var(--ink);margin-bottom:8px}
.decision-explanation .decision-choice{margin-top:20px;color:var(--ink);font-size:1.0625rem;font-weight:500}
.decision-consequences{display:grid;grid-template-columns:1fr 1fr;gap:28px;margin-top:24px}
.decision-consequences p{font-size:.9375rem;line-height:1.75;color:var(--muted)}
.case-outcome .result-delivered{font-size:1.25rem;max-width:880px}
.result-detail{display:grid;grid-template-columns:1fr 1fr;gap:32px 56px;margin-top:40px;max-width:1080px}
.result-detail>div{border-top:1px solid #687783;padding-top:22px}
.result-detail h3{font-size:1rem;color:#fff;font-weight:650;letter-spacing:-.015em;margin-bottom:12px}
.case-outcome .result-detail p{font-size:1rem;line-height:1.8;color:#cbd4dd;max-width:65ch}
.result-detail .result-next{grid-column:1/-1;display:grid;grid-template-columns:1fr 2fr;gap:32px}
.case-essay{padding-block:88px 72px}
.essay-header{max-width:900px}
.essay-header h2{font-size:clamp(2.5rem,4.7vw,4rem);line-height:1.08;letter-spacing:-.05em;font-weight:700;margin-top:24px}
.essay-header>p{font-size:1.1875rem;line-height:1.7;max-width:720px;color:var(--muted);margin-top:24px}
.essay-layout{display:grid;grid-template-columns:240px minmax(0,720px);justify-content:space-between;gap:64px;margin-top:56px;align-items:start}
.essay-index{position:sticky;top:96px;border-top:2px solid var(--ink);padding-top:20px}
.essay-index nav{display:flex;flex-direction:column;align-items:stretch;gap:0;margin-top:16px}
.essay-index button{text-align:left;display:grid;grid-template-columns:20px 1fr;gap:10px;padding:12px 0;font-size:.8125rem;line-height:1.5;color:var(--muted);min-height:44px}
.essay-index button>span{font-size:.625rem;font-weight:700;padding-top:3px;color:var(--accent)}
.essay-index button:hover{color:var(--blue)}
.essay-byline{display:block;margin-top:28px;font-size:.6875rem;line-height:1.8;color:var(--muted)}
.essay-body{min-width:0}
.essay-body>section{border-top:1px solid #b7bdb8;padding-top:28px;margin-bottom:48px;scroll-margin-top:90px}
.chapter-number{display:block;font-size:.6875rem;font-weight:700;color:var(--accent);letter-spacing:.08em;margin-bottom:14px}
.essay-body h3{font-size:1.875rem;font-weight:700;line-height:1.23;letter-spacing:-.035em;margin-bottom:24px;max-width:650px}
.essay-body p{font-size:1.125rem;line-height:1.85;color:#3f4852;margin-top:20px;max-width:68ch}
.essay-body p:first-of-type{margin-top:0}
.case-evidence{border-block:1px solid #a8b0ad;padding-block:4px 18px}
.case-evidence summary{cursor:pointer;min-height:60px;display:flex;align-items:center;justify-content:space-between;gap:24px;font-size:.9375rem;font-weight:700;list-style:none}
.case-evidence summary::-webkit-details-marker{display:none}
.case-evidence summary>span{font-size:1.375rem;font-weight:450}
.case-evidence[open] summary>span{transform:rotate(45deg)}
.case-evidence summary:focus-visible{outline:3px solid var(--blue);outline-offset:3px}
.case-evidence>p{font-size:.875rem;line-height:1.75;margin-top:8px;color:var(--muted)}
.case-evidence dl{margin:24px 0 0}
.case-evidence dl>div{padding-block:16px;border-top:1px solid var(--line)}
.case-evidence dt{font-size:.875rem;font-weight:650;line-height:1.6}
.case-evidence dd{font-size:.8125rem;line-height:1.7;margin:8px 0 0;color:var(--muted)}
.case-essay+.next-case{border-top:1px solid #b6bcb7}
@media(max-width:1100px){.business-brief{gap:28px}.experience-map button{padding:20px 16px}.architecture-details{padding:24px}.architecture-details>div{gap:28px}.system-map>ol{gap:28px}.system-map li:not(:last-child):after{right:-23px}.priority-model{gap:32px;grid-template-columns:1fr 1.5fr}.rubric-columns{gap:24px}.decision-record{gap:40px;grid-template-columns:.8fr 1.5fr}.essay-layout{grid-template-columns:200px minmax(0,1fr);gap:48px}}
@media(max-width:800px){.case-reading>span{font-size:.6875rem}.case-hero .case-summary{font-size:1.0625rem}.business-brief{grid-template-columns:1fr;gap:24px;padding-bottom:48px}.business-brief>div{display:grid;grid-template-columns:160px 1fr;gap:24px}.business-brief h3{margin:0}.case-architecture{padding-block:56px}.experience-map>ol{grid-template-columns:repeat(2,minmax(0,1fr))}.experience-map button{min-height:130px}.experience-map>figcaption{flex-wrap:wrap;gap:8px}.architecture-details>div{grid-template-columns:1fr;gap:20px}.architecture-details p+p{border-left:0;border-top:1px solid var(--line);padding:20px 0 0}.system-map>ol{grid-template-columns:1fr;gap:28px}.system-map li{display:grid;grid-template-columns:1fr 1.5fr;gap:12px 32px}.layer-meta{grid-column:1;gap:4px}.system-map h3{margin-top:0;grid-column:1;font-size:1.375rem}.system-map li p{grid-column:2;grid-row:1/3;margin:0}.system-map li:not(:last-child):after{display:none}.priority-model{grid-template-columns:1fr;gap:28px}.priority-model h3,.priority-model>div>p{max-width:600px}.case-rationale{padding-block:56px}.decision-record{grid-template-columns:1fr;gap:24px}.decision-record>header{display:grid;grid-template-columns:48px 1fr;gap:20px;align-items:start}.decision-record h3{max-width:600px;font-size:1.625rem}.decision-number{font-size:2.25rem}.decision-explanation{padding-left:68px}.essay-layout{grid-template-columns:1fr;gap:36px;margin-top:36px}.essay-index{position:static;border-top:1px solid #a8b0ad;padding-block:20px;border-bottom:1px solid #a8b0ad}.essay-index nav{display:grid;grid-template-columns:1fr 1fr;gap:0 28px;margin-top:12px}.essay-byline{margin-top:18px}.case-essay{padding-block:64px 56px}.result-detail{gap:32px}.result-detail .result-next{grid-template-columns:1fr;gap:8px}.result-detail .result-next h3{margin-bottom:0}}
@media(max-width:560px){.case-reading{align-items:flex-start;gap:16px;margin-bottom:20px}.case-reading>span{font-size:.625rem;line-height:1.6;max-width:90px;text-align:right;padding-top:10px}.case-reading-preview{font-size:.6875rem;margin-top:18px}.case-hero .case-summary{font-size:1.0625rem;line-height:1.75}.case-thesis{padding-left:16px;margin-top:24px;gap:8px}.case-thesis>strong{font-size:1.0625rem}.case-hero .case-stats{padding-block:20px;margin-top:28px}.case-status{gap:16px;align-items:flex-start;margin-top:14px}.case-status>span{font-size:.6875rem;line-height:1.6;max-width:175px;padding-top:9px}.case-status>button{font-size:.6875rem;max-width:105px;text-align:right;line-height:1.6}.case-context{padding-bottom:28px}.business-brief{gap:24px;padding-bottom:40px}.business-brief>div{display:block;padding-top:18px}.business-brief h3{font-size:1rem;margin-bottom:10px}.business-brief p{font-size:.9375rem}.case-section-intro{margin-bottom:28px}.case-section-intro h2{font-size:2.125rem;line-height:1.12;margin-top:16px}.case-section-intro>p{font-size:1rem;line-height:1.75;margin-top:18px}.case-architecture{padding-block:44px}.experience-map{margin-top:28px}.experience-map>figcaption>span:last-child{font-size:.75rem}.experience-map>ol{gap:10px}.experience-map button{padding:16px 14px;min-height:147px;gap:10px}.experience-map button>span:first-child{font-size:.5625rem}.experience-map button>strong{font-size:1rem;line-height:1.35}.experience-map button>span:last-child{font-size:1.25rem}.architecture-details{padding:20px;margin-top:16px;min-height:0}.architecture-details p{font-size:.9375rem;line-height:1.8}.architecture-details strong{font-size:.625rem}.system-map{margin-top:36px}.system-map>ol{margin-top:20px;gap:28px}.system-map li{display:block;padding-top:18px}.layer-meta{gap:5px}.layer-meta>span:first-child{font-size:.625rem}.layer-meta>span:last-child{font-size:.75rem}.system-map h3{margin-top:14px;font-size:1.375rem;max-width:none}.system-map li p{margin-top:14px;font-size:.9375rem;line-height:1.8}.architecture-note{font-size:.75rem;line-height:1.75;margin-top:24px}.priority-model{margin-top:28px;padding-top:28px;gap:24px}.priority-model h3{font-size:1.5rem}.priority-model>div>p{font-size:.9375rem}.rubric-columns{grid-template-columns:1fr;gap:28px}.rubric-columns dt{font-size:.875rem}.case-rationale{padding-block:44px 48px}.decision-records{margin-top:28px}.decision-record{padding-block:28px;gap:24px}.decision-record>header{grid-template-columns:32px 1fr;gap:16px}.decision-number{font-size:1.875rem;padding-top:2px}.decision-record h3{font-size:1.5rem;line-height:1.25}.decision-explanation{padding-left:0}.decision-explanation>p{font-size:1rem;line-height:1.8}.decision-explanation .decision-choice{font-size:1rem}.decision-explanation strong{font-size:.625rem;margin-bottom:8px}.decision-consequences{grid-template-columns:1fr;gap:20px;margin-top:20px}.decision-consequences p{font-size:.9375rem}.case-outcome .result-delivered{font-size:1.0625rem;line-height:1.8}.result-detail{grid-template-columns:1fr;gap:24px;margin-top:28px}.result-detail h3{font-size:1rem}.case-outcome .result-detail p{font-size:.9375rem;line-height:1.8}.case-essay{padding-block:48px 40px}.essay-header h2{font-size:2.375rem;margin-top:20px;line-height:1.1}.essay-header>p{font-size:1.0625rem;line-height:1.7;margin-top:20px}.essay-layout{margin-top:28px;gap:32px}.essay-index nav{grid-template-columns:1fr;gap:0}.essay-index button{font-size:.8125rem;padding-block:10px}.essay-index .eyebrow{font-size:.625rem}.essay-body>section{padding-top:22px;margin-bottom:36px}.essay-body h3{font-size:1.625rem;line-height:1.25;margin-bottom:20px}.essay-body p{font-size:1.0625rem;line-height:1.85;margin-top:20px}.case-evidence summary{font-size:.875rem;line-height:1.6;gap:16px;padding-block:12px}.case-evidence>p{font-size:.8125rem}.case-evidence dt{font-size:.8125rem}.case-evidence dd{font-size:.8125rem}.case-nav>div{gap:24px}}
@media(max-width:800px){.structure-intro{grid-template-columns:1fr;gap:16px}.structure-intro h3{max-width:none}.ia-branches{grid-template-columns:1fr 1fr;gap:28px}.model-table table{font-size:.875rem}.model-table tbody th{font-size:.875rem}}
@media(max-width:560px){.architecture-structure{padding-top:28px;margin-top:28px}.structure-intro h3{font-size:1.5rem}.structure-intro>p{font-size:.9375rem;line-height:1.8}.ia-branches{gap:24px 20px}.ia-branches h4{font-size:.9375rem}.ia-branches li{font-size:.8125rem}.model-table thead{display:none}.model-table table,.model-table tbody,.model-table tr,.model-table th,.model-table td{display:block;width:100%}.model-table tr{border-top:1px solid #899b93;padding-block:18px}.model-table th,.model-table td{border:0;padding:0;font-size:.9375rem;line-height:1.8}.model-table tbody th{width:100%;font-size:1rem;margin-bottom:10px}.model-table td+td{margin-top:10px;color:#596b61}.model-equation{padding:18px;font-size:.9375rem}}
@media(max-width:560px){.model-table thead{display:block;position:absolute;width:1px;height:1px;overflow:hidden;clip-path:inset(50%);white-space:nowrap}.model-table td:before{content:attr(data-label);display:block;font-size:.625rem;text-transform:uppercase;letter-spacing:.08em;font-weight:700;color:#465750;margin-bottom:5px}}
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