.case-detail-page{background:#f2f5f9}
.case-detail-page section[id]{scroll-margin-top:calc(var(--header-h) + 28px)}
.case-detail-page h1,.case-detail-page h2{text-wrap:balance}
.case-detail-page p{text-wrap:pretty}

.case-detail-hero{position:relative;overflow:hidden;padding:68px 0 76px;background:#071321;color:#fff;isolation:isolate}
.case-detail-hero::before{content:"";position:absolute;inset:0;background:url("/assets/img/v4/yantai-workshop-hero-v2.webp") center/cover no-repeat;opacity:.16;filter:saturate(.7);z-index:-3}
.case-detail-hero::after{content:"";position:absolute;inset:0;background:linear-gradient(90deg,rgba(4,13,25,.98) 0%,rgba(4,13,25,.92) 50%,rgba(4,13,25,.62) 100%);z-index:-2}
.case-detail-hero__grid{display:grid;grid-template-columns:minmax(0,.88fr) minmax(520px,1.12fr);gap:72px;align-items:center}
.case-detail-hero .crumb{margin:0 0 36px;color:rgba(255,255,255,.52);font-size:13px}
.case-detail-hero .crumb a{color:rgba(255,255,255,.74)}
.case-detail-hero__eyebrow{display:flex;align-items:center;gap:14px;margin:0 0 20px;color:var(--cyan);font-size:11px;font-weight:800;letter-spacing:.13em}
.case-detail-hero__eyebrow::after{content:"";width:72px;height:1px;background:rgba(105,210,255,.52)}
.case-detail-hero h1{max-width:9em;margin-bottom:24px;color:#fff;font-size:clamp(3.25rem,5.8vw,5.85rem);letter-spacing:-.055em}
.case-detail-hero__summary{max-width:690px;margin:0 0 28px;color:rgba(247,249,252,.78);font-size:18px;line-height:1.82}
.case-detail-hero__audience{max-width:680px;margin:0;padding:18px 0 0;border-top:1px solid rgba(255,255,255,.14);color:rgba(247,249,252,.64);font-size:14px}
.case-detail-hero__audience strong{margin-right:12px;color:#fff}
.case-detail-hero__actions{display:flex;align-items:center;gap:12px;margin-top:30px}
.case-detail-hero__back{display:inline-flex;align-items:center;min-height:48px;padding:0 18px;border:1px solid rgba(255,255,255,.22);color:#fff;font-size:13px;font-weight:750;transition:border-color var(--dur-ui) var(--ease),background-color var(--dur-ui) var(--ease),transform var(--dur-ui) var(--ease)}
@media(hover:hover){.case-detail-hero__back:hover{transform:translateY(-2px);border-color:rgba(255,255,255,.5);background:rgba(255,255,255,.06);color:#fff}}

.case-hero-media{position:relative;display:grid;place-items:center;min-height:560px;overflow:hidden;border:1px solid rgba(255,255,255,.15);background:#0b1d31;box-shadow:0 40px 100px rgba(0,0,0,.36);isolation:isolate}
.case-hero-media::before{content:"";position:absolute;inset:-30px;background-image:linear-gradient(rgba(5,15,27,.3),rgba(5,15,27,.58)),var(--case-hero-image);background-position:center;background-size:cover;filter:blur(22px) saturate(.78);opacity:.72;transform:scale(1.1);z-index:-2}
.case-hero-media::after{content:"";position:absolute;inset:0;background:linear-gradient(rgba(105,210,255,.08) 1px,transparent 1px),linear-gradient(90deg,rgba(105,210,255,.08) 1px,transparent 1px);background-size:44px 44px;mask-image:linear-gradient(to bottom,#000,transparent 92%);pointer-events:none;z-index:-1}
.case-hero-media img{width:calc(100% - 42px);max-height:518px;object-fit:contain;filter:drop-shadow(0 24px 38px rgba(0,0,0,.36));animation:caseHeroEnter 720ms var(--ease) both}
.case-hero-media__label{position:absolute;left:16px;bottom:16px;padding:9px 12px;background:rgba(5,15,27,.88);border:1px solid rgba(255,255,255,.15);color:#fff;font-size:10px;font-weight:700;letter-spacing:.1em;backdrop-filter:blur(10px)}
@keyframes caseHeroEnter{from{opacity:0;transform:translateY(20px) scale(.98)}to{opacity:1;transform:none}}

.case-facts{position:relative;margin-top:-1px;background:#fff;border-bottom:1px solid var(--line)}
.case-facts .wrap{display:grid;grid-template-columns:1.45fr repeat(3,.55fr);align-items:stretch}
.case-facts__intro{padding:24px 34px 24px 0;border-right:1px solid var(--line)}
.case-facts__intro small{display:block;margin-bottom:5px;color:var(--brand);font-size:10px;font-weight:800;letter-spacing:.12em}
.case-facts__intro p{margin:0;color:var(--ink-2);font-size:14px}
.case-fact{display:flex;flex-direction:column;justify-content:center;padding:22px 24px;border-right:1px solid var(--line)}
.case-fact:last-child{border-right:0}
.case-fact strong{color:var(--ink);font-size:23px;font-variant-numeric:tabular-nums}
.case-fact span{color:var(--ink-muted);font-size:11px}

.case-detail-layout{display:grid;grid-template-columns:220px minmax(0,1fr);gap:76px;padding:92px 0 124px}
.case-toc{position:sticky;top:calc(var(--header-h) + 24px);align-self:start}
.case-toc>span{display:block;margin-bottom:18px;color:var(--ink-faint);font-size:10px;font-weight:800;letter-spacing:.12em}
.case-toc nav{display:flex;flex-direction:column;border-top:1px solid var(--line)}
.case-toc a{display:flex;align-items:center;justify-content:space-between;min-height:48px;border-bottom:1px solid var(--line);color:var(--ink-2);font-size:12px;font-weight:700;transition:color var(--dur-ui) var(--ease),padding-left var(--dur-ui) var(--ease),background-color var(--dur-ui) var(--ease)}
.case-toc a::after{content:"→";color:var(--ink-faint)}
@media(hover:hover){.case-toc a:hover{padding-left:8px;background:rgba(255,255,255,.55);color:var(--brand)}}
.case-toc .btn{margin-top:22px;width:100%;justify-content:center}

.case-detail-content{min-width:0}
.case-section{padding:0 0 96px}
.case-section+.case-section{padding-top:4px}
.case-section__head{display:grid;grid-template-columns:100px minmax(0,1fr);gap:28px;align-items:start;margin-bottom:38px;padding-bottom:22px;border-bottom:1px solid var(--line)}
.case-section__head>span{padding-top:8px;color:var(--brand);font-size:10px;font-weight:800;letter-spacing:.12em}
.case-section__head h2{max-width:14em;margin:0;font-size:clamp(2.1rem,3.7vw,3.45rem)}
.case-section__head p{max-width:690px;margin:15px 0 0;color:var(--ink-muted)}

.case-problems{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:14px;margin:0;padding:0;list-style:none;counter-reset:case-problem}
.case-problem{position:relative;min-height:190px;padding:72px 22px 24px;background:#fff;border:1px solid var(--line);color:var(--ink-2);font-size:14px;line-height:1.75;counter-increment:case-problem}
.case-problem::before{content:"0" counter(case-problem);position:absolute;left:22px;top:20px;color:var(--accent);font-size:12px;font-weight:800;letter-spacing:.08em}

.case-roles{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:1px;background:var(--line)}
.case-role{position:relative;min-height:170px;padding:30px 30px 26px;background:#fff}
.case-role>span{display:block;margin-bottom:25px;color:var(--brand);font-size:10px;font-weight:800;font-variant-numeric:tabular-nums}
.case-role h3{margin:0 0 9px;font-size:18px}
.case-role p{margin:0;color:var(--ink-muted);font-size:14px}

.case-modules{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:16px}
.case-module{position:relative;min-height:210px;padding:34px 34px 30px;background:#0b1b2e;color:#fff;border-top:3px solid transparent;overflow:hidden;transition:transform 300ms var(--ease),border-color 300ms var(--ease),box-shadow 300ms var(--ease)}
.case-module::after{content:"";position:absolute;right:-42px;bottom:-72px;width:160px;height:160px;border:1px solid rgba(105,210,255,.13);border-radius:50%;box-shadow:0 0 0 24px rgba(105,210,255,.025),0 0 0 50px rgba(105,210,255,.02)}
.case-module>span{display:block;margin-bottom:28px;color:var(--cyan);font-size:10px;font-weight:800;letter-spacing:.1em}
.case-module h3{margin:0 0 12px;color:#fff;font-size:21px}
.case-module p{position:relative;z-index:1;max-width:33em;margin:0;color:rgba(247,249,252,.68);font-size:14px;line-height:1.8}
@media(hover:hover){.case-module:hover{transform:translateY(-4px);border-color:var(--cyan);box-shadow:0 22px 44px rgba(8,17,31,.16)}}

.case-flow{position:relative;margin:0;padding:0;list-style:none}
.case-flow::before{content:"";position:absolute;left:28px;top:30px;bottom:30px;width:1px;background:var(--line-strong)}
.case-flow li{position:relative;display:grid;grid-template-columns:58px 1fr;gap:24px;padding:0 0 32px}
.case-flow li:last-child{padding-bottom:0}
.case-flow li>span{position:relative;z-index:1;display:grid;place-items:center;width:58px;height:58px;background:#f2f5f9;border:1px solid var(--line-strong);color:var(--brand);font-size:11px;font-weight:800;font-variant-numeric:tabular-nums}
.case-flow li>div{padding:6px 0 28px;border-bottom:1px solid var(--line)}
.case-flow h3{margin:0 0 7px;font-size:20px}
.case-flow p{margin:0;color:var(--ink-muted);font-size:14px}

.case-outcomes{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:1px;margin:0 0 58px;padding:1px;background:var(--line);list-style:none}
.case-outcome{position:relative;min-height:126px;padding:52px 22px 22px;background:#fff;color:var(--ink-2);font-size:14px;font-weight:700}
.case-outcome::before{content:"";position:absolute;left:22px;top:22px;width:18px;height:8px;border-left:2px solid var(--ok);border-bottom:2px solid var(--ok);transform:rotate(-45deg)}

.case-gallery-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:22px;align-items:start}
.case-shot{min-width:0;margin:0;background:#fff;border:1px solid var(--line);box-shadow:0 12px 36px rgba(8,17,31,.07);transition:transform 300ms var(--ease),box-shadow 300ms var(--ease)}
.case-shot>a{position:relative;display:grid;place-items:center;min-height:330px;max-height:620px;overflow:hidden;background:#0b1828;isolation:isolate}
.case-shot>a::before{content:"";position:absolute;inset:0;background:linear-gradient(rgba(255,255,255,.035) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.035) 1px,transparent 1px);background-size:32px 32px;z-index:-1}
.case-shot img{width:100%;height:100%;max-height:620px;object-fit:contain;object-position:center;background:#0b1828;transition:transform 520ms var(--ease),filter 520ms var(--ease)}
.case-shot--portrait>a{min-height:560px}
.case-shot--portrait img{width:auto;max-width:100%}
.case-shot figcaption{display:grid;grid-template-columns:36px 1fr auto;gap:12px;align-items:center;min-height:64px;padding:12px 16px;border-top:1px solid var(--line)}
.case-shot figcaption span{color:var(--brand);font-size:10px;font-weight:800;font-variant-numeric:tabular-nums}
.case-shot figcaption strong{font-size:12px}
.case-shot figcaption small{color:var(--ink-faint);font-size:10px}
@media(hover:hover){.case-shot:hover{transform:translateY(-5px);box-shadow:0 24px 58px rgba(8,17,31,.13)}.case-shot:hover img{transform:scale(1.018);filter:brightness(1.04)}}
.case-shot a:focus-visible{outline:3px solid var(--cyan);outline-offset:-3px}

.case-tuning{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:12px;margin:0;padding:0;list-style:none}
.case-tuning li{display:grid;grid-template-columns:42px 1fr;gap:16px;align-items:start;min-height:120px;padding:24px;background:#fff;border:1px solid var(--line)}
.case-tuning li>span{display:grid;place-items:center;width:38px;height:38px;background:var(--brand-soft);color:var(--brand);font-size:10px;font-weight:800}
.case-tuning p{margin:3px 0 0;color:var(--ink-2);font-size:14px}

.case-delivery-note{display:grid;grid-template-columns:1fr auto;gap:44px;align-items:center;margin-top:18px;padding:36px;background:#fff;border-left:4px solid var(--accent)}
.case-delivery-note h3{margin-bottom:8px;font-size:20px}
.case-delivery-note p{max-width:650px;margin:0;color:var(--ink-muted);font-size:14px}

.case-adjacent{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:1px;background:var(--line);border:1px solid var(--line)}
.case-adjacent a{display:flex;flex-direction:column;min-height:126px;padding:26px 28px;background:#fff;color:var(--ink);transition:background-color var(--dur-ui) var(--ease),color var(--dur-ui) var(--ease)}
.case-adjacent a:last-child{text-align:right}
.case-adjacent span{margin-bottom:18px;color:var(--ink-faint);font-size:10px;font-weight:800;letter-spacing:.1em}
.case-adjacent strong{font-size:18px}
@media(hover:hover){.case-adjacent a:hover{background:#0b1b2e;color:#fff}.case-adjacent a:hover span{color:var(--cyan)}}

.case-detail-cta{position:relative;overflow:hidden;padding:96px 0;background:#08111f;color:#fff;isolation:isolate}
.case-detail-cta::before{content:"";position:absolute;inset:0;background:url("/assets/img/v4/yantai-operations-v2.webp") center/cover no-repeat;opacity:.2;z-index:-2}
.case-detail-cta::after{content:"";position:absolute;inset:0;background:linear-gradient(90deg,rgba(8,17,31,.98),rgba(8,17,31,.74));z-index:-1}
.case-detail-cta .wrap{display:grid;grid-template-columns:1fr auto;gap:72px;align-items:end}
.case-detail-cta h2{max-width:12em;margin-bottom:16px;color:#fff}
.case-detail-cta p{max-width:660px;margin:0;color:rgba(247,249,252,.7)}
.case-detail-cta__actions{display:flex;gap:12px}
.case-missing{padding:150px 0;text-align:center}

@media(max-width:1080px){.case-detail-hero__grid{grid-template-columns:1fr;gap:48px}.case-hero-media{min-height:520px}.case-detail-layout{grid-template-columns:1fr;gap:50px}.case-toc{position:static}.case-toc nav{display:grid;grid-template-columns:repeat(3,minmax(0,1fr))}.case-toc a{padding:0 14px;border-right:1px solid var(--line)}.case-toc .btn{width:auto}.case-facts .wrap{grid-template-columns:1fr repeat(3,.5fr)}}
@media(max-width:760px){.case-detail-hero{padding:52px 0 58px}.case-detail-hero h1{font-size:3rem}.case-hero-media{min-height:380px}.case-facts .wrap{grid-template-columns:1fr 1fr}.case-facts__intro{grid-column:1/-1;border-right:0;border-bottom:1px solid var(--line)}.case-detail-layout{padding:64px 0 88px}.case-toc nav{grid-template-columns:repeat(2,minmax(0,1fr))}.case-section{padding-bottom:72px}.case-section__head{grid-template-columns:1fr;gap:8px}.case-problems,.case-outcomes,.case-modules,.case-roles,.case-gallery-grid,.case-tuning{grid-template-columns:1fr}.case-shot>a,.case-shot--portrait>a{min-height:340px;max-height:none}.case-detail-cta .wrap{grid-template-columns:1fr;gap:34px}.case-detail-cta__actions{align-items:flex-start;flex-direction:column}}
@media(prefers-reduced-motion:reduce){.case-hero-media img{animation:none}.case-hero-media__back,.case-module,.case-shot,.case-shot img,.case-toc a,.case-adjacent a{transition:none}}