/* Shared presentation for the high-level engagement summaries. */
.case-study .sys{padding:42px 0;scroll-margin-top:90px}
.case-study .sys-body>.sys-main>p{max-width:68ch;line-height:1.75}
.case-study .sys-body>.sys-main>p+p{margin-top:18px}
.case-study .sys-side{border-left:2px solid var(--gold);padding-left:22px}
.case-study .sys-side .stk{background:var(--bg-soft)}
.case-study .sys-main .case-study-reference{font-size:14px;color:var(--body);padding-top:18px;border-top:1px solid var(--line)}
.case-study-reference a{text-decoration:underline;text-decoration-color:var(--gold);text-underline-offset:4px;color:var(--ink)}
.case-study-reference a:focus-visible{outline:2px solid var(--gold);outline-offset:4px}
.case-study-close{max-width:720px;padding:28px 0;margin:0 0 24px;border-top:1px solid var(--line)}
.product-snapshot{margin:32px 0 0;border:1px solid var(--line);border-radius:12px;overflow:hidden;background:var(--bg-soft);box-shadow:0 18px 48px -28px rgba(36,46,39,.22)}
.snapshot-bar{display:flex;align-items:center;gap:14px;padding:14px 20px;border-bottom:1px solid var(--line);font-size:12px;font-weight:500;color:var(--ink);background:var(--bg)}
.snapshot-dots{display:flex;gap:5px;flex:none}
.snapshot-dots i{width:6px;height:6px;border-radius:50%;background:var(--muted);opacity:.35}
.snapshot-label{margin-left:auto;font-size:10px;letter-spacing:.06em;color:var(--muted)}
.snapshot-image{display:block;padding:20px 20px 0;transition:background .2s ease}
.snapshot-image img{display:block;width:100%;height:auto;border:1px solid var(--line);border-bottom:0;border-radius:5px 5px 0 0}
.snapshot-image:hover{background:rgba(13,72,93,.04)}
.snapshot-image:focus-visible{outline:3px solid var(--gold);outline-offset:-4px}
.product-snapshot figcaption{display:flex;align-items:flex-start;justify-content:space-between;gap:24px;padding:22px 24px;border-top:1px solid var(--line);background:var(--bg)}
.product-snapshot figcaption strong{display:block;color:var(--ink);font-family:var(--ff-display);font-size:19px;font-weight:500;line-height:1.35}
.product-snapshot figcaption span{display:block;max-width:60ch;font-size:13px;line-height:1.65;margin-top:6px}
.product-snapshot figcaption small{max-width:24ch;font-size:11px;line-height:1.7;color:var(--muted);text-align:right;flex-shrink:0}
@media(max-width:600px){.snapshot-bar{padding:12px;gap:9px;font-size:10px}.snapshot-label{font-size:9px;letter-spacing:0}.snapshot-dots{display:none}.snapshot-image{padding:10px 10px 0}.product-snapshot figcaption{display:block;padding:18px}.product-snapshot figcaption strong{font-size:18px}.product-snapshot figcaption small{display:block;max-width:none;text-align:left;margin-top:12px}.product-snapshot{margin-top:24px}}
@media(max-width:820px){.case-study .sys-body{gap:24px}.case-study .sys-side{padding-left:18px}.case-study .sys{padding:34px 0}}
@media(prefers-reduced-motion:reduce){.case-study{scroll-behavior:auto}.js-on .case-study .reveal,.case-study.js-on .reveal{opacity:1;transform:none;transition:none}}

/* ---- v3: reading experience ---- */
.progress{position:fixed;top:0;left:0;height:3px;width:100%;transform:scaleX(0);transform-origin:0 50%;background:linear-gradient(90deg,var(--gold),var(--gold-soft));z-index:200;pointer-events:none}
.glance{display:grid;grid-template-columns:repeat(3,1fr);gap:0;margin:36px 0 12px;border:1px solid var(--line);border-radius:var(--r);background:var(--bg-soft)}
.glance>div{padding:24px 28px;display:flex;flex-direction:column;gap:6px}
.glance>div+div{border-left:1px solid var(--line)}
.g-v{font-family:var(--ff-display);font-size:34px;line-height:1;color:var(--ink);font-weight:500;letter-spacing:-.02em}
.g-l{font-size:13.5px;line-height:1.55;color:var(--body)}
.case-layout{display:grid;grid-template-columns:200px minmax(0,1fr);gap:48px;align-items:start}
.chapters{position:sticky;top:96px;display:flex;flex-direction:column;gap:2px;padding-top:34px}
.chapters .lab{font-size:11px;letter-spacing:.11em;text-transform:uppercase;color:var(--muted);font-weight:700;margin:0 0 12px}
.chapters a{display:flex;gap:12px;align-items:baseline;font-size:14px;font-weight:500;color:var(--muted);padding:8px 0 8px 14px;border-left:2px solid var(--line);transition:color .2s,border-color .2s}
.chapters a span{font-family:var(--ff-display);font-size:13px;color:var(--gold-soft)}
.chapters a:hover{color:var(--ink)}
.chapters a.on{color:var(--ink);border-left-color:var(--gold);font-weight:600}
.chapters a:focus-visible{outline:2px solid var(--gold);outline-offset:2px}
/* engagement cards */
.case-study .sys{padding:34px 36px;margin-top:22px;border:1px solid var(--line);border-radius:var(--r-lg);background:#fff;transition:box-shadow .3s,border-color .3s}
.case-study .sys:first-of-type{border-top:1px solid var(--line)}
.case-study .sys:hover{box-shadow:var(--shadow);border-color:#ddd9ce}
.case-study .sys-head .num{font-size:15px;background:var(--gold-tint);width:38px;height:38px;border-radius:50%;display:grid;place-items:center}
.case-study .sys-head .status{margin-left:auto}
.case-study .sys-body{grid-template-columns:1fr 250px}
.ps{position:relative;padding:18px 20px 18px 20px;border-radius:var(--r-sm)}
.ps-lab{display:block;font-size:11px;font-weight:700;letter-spacing:.12em;text-transform:uppercase;margin-bottom:6px}
.ps-problem{background:var(--bg-soft)}
.ps-problem .ps-lab{color:var(--muted)}
.ps-solution{background:var(--gold-tint)}
.ps-solution .ps-lab{color:var(--gold-d)}
.ps-result{border:1px dashed var(--line);padding:14px 20px}
.ps-result .ps-lab{color:#177a49}
.case-study .sys-body>.sys-main>p+p{margin-top:12px}
.case-study .built{margin:14px 4px 0}
.case-study .sys-side .stk{background:#fff}
.case-study .product-snapshot{margin-top:28px}
.snapshot-image{position:relative;cursor:zoom-in}
.snapshot-image::after{content:"Enlarge";position:absolute;right:30px;top:32px;font-size:11px;font-weight:600;letter-spacing:.05em;color:#fff;background:rgba(21,23,29,.82);padding:6px 11px;border-radius:999px;opacity:0;transform:translateY(-4px);transition:.2s}
.snapshot-image:hover::after,.snapshot-image:focus-visible::after{opacity:1;transform:none}
.nextcase{display:flex;align-items:center;justify-content:space-between;gap:24px;flex-wrap:wrap;padding:34px 38px;margin-top:20px;border-radius:var(--r-lg);background:var(--bg-ink);color:#fff}
.nextcase h3{color:#fff;font-family:var(--ff-display);font-weight:500;font-size:clamp(22px,3vw,30px);margin-top:10px}
.nextcase .btn-primary{background:#fff;color:var(--ink)}
.casenav{display:flex;justify-content:space-between;align-items:center;gap:20px;padding:30px 0 0}
.nextlink{display:block;text-align:right;font-family:var(--ff-display);font-size:24px;color:var(--ink);font-weight:500}
.nextlink small{display:block;font-family:var(--ff-sans);font-size:11px;letter-spacing:.1em;text-transform:uppercase;color:var(--muted);font-weight:600}
.nextlink:hover span{color:var(--gold)}
.lightbox{border:0;padding:0;background:transparent;max-width:min(1280px,94vw);width:100%;overflow:visible}
.lightbox::backdrop{background:rgba(17,19,25,.82);backdrop-filter:blur(4px)}
.lightbox img{width:100%;height:auto;max-height:90vh;object-fit:contain;border-radius:10px;background:#fff}
.lb-close{position:absolute;right:-6px;top:-44px;background:none;border:0;color:#fff;font-size:34px;line-height:1;cursor:pointer;padding:4px 10px}
@media(max-width:980px){.case-layout{grid-template-columns:1fr;gap:0}.chapters{display:none}}
@media(max-width:820px){.case-study .sys{padding:24px 20px}.case-study .sys-body{grid-template-columns:1fr}.case-study .sys-head .status{margin-left:0}.glance{grid-template-columns:1fr}.glance>div+div{border-left:0;border-top:1px solid var(--line)}.nextcase{padding:26px 22px}}
@media(prefers-reduced-motion:reduce){.progress{transition:none}.case-study .sys{transition:none}}
/* hero: logo, eyebrow and name share one left edge */
.case-study .dhero .eyebrow::before{display:none}
.case-study .dhero h1{margin-left:-.04em}

.chapters a{position:relative}
.chapters a.on{border-left-color:var(--line)}
.chapters a::before{content:"";position:absolute;left:-2px;top:0;bottom:0;width:2px;background:var(--gold);transform:scaleY(0);transform-origin:top;transition:transform .25s cubic-bezier(.2,.7,.2,1)}
.chapters a.on::before{transform:scaleY(1)}