.engineering-story{--s-bg:#f4f4f0;--s-ink:#202d32;--s-muted:#667476;--s-line:#d9dfdc;position:relative;background:var(--s-bg);color:var(--s-ink);isolation:isolate}
html[data-theme="soft-dark"] .engineering-story{--s-bg:#172126;--s-ink:#ecf0ec;--s-muted:#a6b5b8;--s-line:#35474d}
.story-sticky{position:sticky;top:68px;height:calc(100svh - 68px);min-height:600px;pointer-events:none;margin-bottom:calc(-100svh + 68px);overflow:hidden}
.story-visual{position:absolute;left:43%;right:1%;top:0;bottom:70px}
.story-stage{position:absolute;inset:0}.story-stage canvas{width:100%;height:100%;display:block;position:absolute;inset:0;opacity:0;transition:opacity .6s}.story-ready canvas{opacity:1}
.story-poster{position:absolute;width:82%;height:82%;object-fit:contain;inset:9%;mix-blend-mode:multiply;transition:opacity .5s}.story-ready .story-poster{opacity:0;visibility:hidden}html[data-theme="soft-dark"] .story-poster{mix-blend-mode:normal;border-radius:30px}
.story-orbit{position:absolute;width:75%;height:40%;left:12%;bottom:10%;border-radius:50%;background:radial-gradient(ellipse,#90b6c427,transparent 67%);border:1px solid #9aaca326;transform:rotate(-14deg);box-shadow:0 0 0 35px #a9b7aa08,0 0 0 70px #a9b7aa05}
.story-model-caption{position:absolute;top:6%;left:11%;right:8%;display:flex;justify-content:space-between;color:var(--s-muted);font:10px var(--mono);letter-spacing:.13em}
.story-status{position:absolute;bottom:8%;left:0;right:0;display:flex;justify-content:center;gap:9px;align-items:center;font-size:11px;color:var(--s-muted)}.story-led{width:5px;height:5px;border-radius:50%;background:#569b92;box-shadow:0 0 10px #68aa9770}
.story-content{position:relative;z-index:1;pointer-events:none}.story-step{min-height:calc(125svh - 68px);padding:10vh 0 15vh;display:flex;align-items:center;scroll-margin-top:90px;border:0;background:none}.story-step:first-child{min-height:calc(100svh - 68px);padding-top:40px;padding-bottom:100px}.story-step:last-child{min-height:125svh}
.story-copy{width:43%;padding-left:clamp(24px,6vw,100px);padding-right:15px;pointer-events:auto}.story-kicker{font:10px/1.7 var(--mono);letter-spacing:.14em;margin-bottom:28px;color:var(--s-muted);display:flex;gap:10px;align-items:center}.story-kicker>span{width:5px;height:5px;background:#bd7649;border-radius:50%}
.story-copy h1,.story-copy h2{font-family:var(--disp);font-size:clamp(38px,4.15vw,70px);font-weight:400;line-height:1.08;letter-spacing:-.055em;margin:0 0 24px}.story-copy h2{font-size:clamp(36px,3.8vw,62px)}.story-copy h2 em{font-style:normal;color:var(--s-muted)}
.story-spectrum{background:linear-gradient(110deg,#bd653f 8%,#aa7566 36%,#779699 62%,#367994 95%);background-clip:text;-webkit-text-fill-color:transparent}html[data-theme="soft-dark"] .story-spectrum{background-image:linear-gradient(110deg,#f1a071,#b4a2a3,#70b3ce)}
.story-lead{font-size:14px;line-height:1.85;color:var(--s-muted);max-width:405px;margin-bottom:28px}.story-actions{display:flex;gap:20px;align-items:center;flex-wrap:wrap}.story-button{display:inline-flex;gap:24px;align-items:center;justify-content:space-between;padding:14px 21px;border-radius:7px;background:var(--s-ink);color:var(--s-bg);font-size:12px;font-weight:600;transition:transform .2s,box-shadow .2s}.story-button:hover{transform:translateY(-2px);box-shadow:0 8px 22px #182b3320}.story-link{font-size:12px;padding:8px 0;border-bottom:1px solid var(--s-line)}
.story-facts{display:flex;gap:34px;padding-top:28px;margin-top:38px;border-top:1px solid var(--s-line);max-width:410px}.story-facts>div{display:flex;flex-direction:column;gap:6px}.story-facts strong{font:400 26px var(--disp);letter-spacing:-.03em}.story-facts span{font-size:10px;color:var(--s-muted)}
.story-bottom{position:absolute;bottom:0;left:6%;right:5%;height:65px;border-top:1px solid var(--s-line);display:flex;align-items:center;justify-content:space-between;gap:16px;pointer-events:auto;z-index:5}.story-scroll{font:9px var(--mono);letter-spacing:.12em;color:var(--s-muted)}.story-chapters{display:flex;gap:12px}.story-chapters a{display:flex;align-items:center;gap:9px;padding:12px 0;font:10px var(--mono);color:var(--s-muted)}.story-chapters i{width:35px;height:2px;background:var(--s-line)}.story-chapters [aria-current="step"]{color:var(--s-ink)}.story-chapters [aria-current="step"] i{background:#c17e59}.story-motion{font-size:10px;color:var(--s-muted);padding:10px;border:1px solid var(--s-line);border-radius:5px}
.story-labels{opacity:0;position:absolute;inset:0}.part-label{position:absolute;display:flex;flex-direction:column;gap:4px;padding:9px 12px;background:color-mix(in srgb,var(--s-bg) 90%,transparent);border-left:1px solid #aa8061;box-shadow:0 4px 20px #253b4405}.part-label b{font:500 11px var(--body)}.part-label span{font-size:9px;color:var(--s-muted)}
.story-detail{border-top:1px solid var(--s-line);padding:20px 0;max-width:370px}.story-detail>span{font:10px var(--mono);color:#a57851}.story-detail h3{font-size:17px;font-weight:500;margin:9px 0}.story-detail p{font-size:12px;color:var(--s-muted);line-height:1.8}.story-footnote{font-size:10px;color:var(--s-muted);line-height:1.7;max-width:405px;margin-top:22px}.story-comparison{font-size:11px;border-top:1px solid var(--s-line);margin-top:20px}.story-comparison>div{display:grid;grid-template-columns:1fr 1fr;gap:18px;padding:12px 0;border-bottom:1px solid var(--s-line)}.story-comparison span{color:var(--s-muted)}.story-comparison strong{font-weight:500}.story-comparison-head{font-size:10px}.story-comparison-head strong{color:#4a8b7d}.story-cycle{display:flex;align-items:center;justify-content:space-between;gap:10px;margin-top:22px;font-size:11px}.story-cycle b{color:#599b8e;font-weight:400;font-size:20px}.story-specs{margin:22px 0 28px}.story-specs>div{display:flex;justify-content:space-between;gap:15px;padding:11px 0;border-bottom:1px solid var(--s-line);font-size:11px}.story-specs dt{color:var(--s-muted)}.story-specs dd{text-align:right}
.engineering-story a:focus-visible,.engineering-story button:focus-visible{outline:2px solid #b97950;outline-offset:5px}.story-fallback .story-labels{display:none}
@media(min-width:1700px){.story-copy{padding-left:8vw;width:43%}.story-lead{font-size:17px}.story-detail p{font-size:14px}}
@media(max-width:1100px){.story-copy{padding-left:4vw;width:47%}.story-visual{left:45%;right:0}.story-copy h1{font-size:clamp(36px,4.5vw,52px)}.story-actions{gap:12px}.story-facts{gap:25px}.story-model-caption{font-size:8px}.story-status{font-size:9px}.part-label span{max-width:105px}.story-bottom{left:4%;right:4%}}
@media(max-width:760px){.story-sticky{top:68px;height:calc(100svh - 68px);min-height:0}.story-visual{left:0;right:0;top:0;height:40svh;bottom:auto;background:var(--s-bg);border-bottom:1px solid var(--s-line)}.story-stage{inset:0 12%}.story-model-caption{top:5%;left:6%;right:6%;font-size:8px}.story-status{bottom:4%;font-size:9px}.story-orbit{width:55%;left:23%;bottom:5%}.story-content{z-index:auto}.story-step,.story-step:first-child,.story-step:last-child{min-height:145svh;padding:calc(40svh + 38px) 22px 100px;align-items:flex-start;scroll-margin-top:68px}.story-copy{width:100%;padding:0;position:relative;z-index:1}.story-copy h1,.story-copy h2{font-size:clamp(34px,8.7vw,48px);max-width:560px}.story-kicker{font-size:8px;margin-bottom:17px}.story-lead{font-size:12px;line-height:1.75;margin-bottom:20px;max-width:550px}.story-facts{margin-top:22px;padding-top:18px;gap:35px}.story-facts strong{font-size:23px}.story-facts span{font-size:9px}.story-bottom{left:0;right:0;padding:0 20px;height:48px;background:var(--s-bg);z-index:10}.story-scroll{display:none}.story-chapters{gap:10px}.story-chapters i{width:20px}.story-chapters a{font-size:9px}.story-motion{font-size:9px;padding:7px}.story-sticky{z-index:2}.story-visual{pointer-events:none}.story-labels .part-label{padding:5px 7px}.part-label b{font-size:8px}.part-label span{font-size:7px;max-width:90px}.story-detail{padding:15px 0}.story-specs{margin:18px 0}.story-footnote{margin-top:15px}.story-button{padding:12px 16px;font-size:11px}.story-link{font-size:11px}}
@media(max-width:380px){.story-step,.story-step:first-child,.story-step:last-child{min-height:165svh}.story-copy h1,.story-copy h2{font-size:32px}.story-facts{gap:24px}.story-comparison{font-size:10px}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}.story-stage canvas,.story-poster,.story-button{transition:none}}
/* Keep global navigation and the existing chat launcher clear on small screens. */
@media(max-width:760px){body>nav .nav-in{gap:8px;padding-inline:12px}body>nav .logo{font-size:15px}body>nav .nav-right{gap:6px}body>nav .lang button{padding:6px 8px;font-size:11px}body>nav .cart-btn{padding:7px 10px;font-size:12px}body>nav .theme-toggle{padding:0;min-width:30px;width:30px;height:30px}body>nav .theme-label{display:none}.story-bottom{padding-right:82px}.story-chapters{gap:7px}.story-chapters a{gap:6px}.story-chapters i{width:13px}.story-motion{font-size:8px;white-space:nowrap}}
@media(min-width:761px){.story-bottom{padding-right:65px}.story-status{bottom:2%}}
@media(min-width:761px){.story-step:not(:first-child){align-items:flex-start;padding-top:clamp(60px,12vh,120px)}}
@media(max-width:360px){body>nav .logo{font-size:12px}body>nav .nav-in{padding-inline:10px;gap:6px}body>nav .nav-right{gap:5px}.story-bottom{padding-left:12px;padding-right:78px}}
@media(min-width:821px) and (max-width:1180px){body>nav .nav-links{gap:14px;font-size:12px}body>nav .nav-links a:nth-last-child(-n+2){display:none}body>nav .nav-in{padding-inline:18px}.theme-label{display:none}}

/* Inox edition: projected part controls and the colour studio. */
.engineering-story{--s-bg:#eff1f0;--s-ink:#202a30;--s-muted:#626f75;--s-line:#cdd4d5;background:radial-gradient(ellipse at 80% 8%,#ffffff90,transparent 25%),var(--s-bg)}
html[data-theme="soft-dark"] .engineering-story{--s-bg:#151d23;--s-ink:#ecf0f1;--s-muted:#a5b2ba;--s-line:#35414a;background:radial-gradient(ellipse at 80% 8%,#60798618,transparent 25%),var(--s-bg)}
.story-stage canvas{pointer-events:auto;touch-action:pan-y}.story-model-caption,.story-status{pointer-events:none}
.story-labels{z-index:3;pointer-events:none}.story-labels[hidden]{display:none}
.story-leaders{position:absolute;inset:0;width:100%;height:100%;overflow:visible}.story-leaders line{stroke:#859ba8;stroke-width:.8;stroke-dasharray:3 3;opacity:.7}
.story-labels .part-label{left:0;top:0;right:auto;bottom:auto;text-align:left;pointer-events:auto;border:1px solid var(--s-line);border-left:2px solid #8b9fa9;border-radius:5px;padding:10px 12px;max-width:210px;color:var(--s-ink);backdrop-filter:blur(8px);transition:background .2s,border-color .2s,box-shadow .2s;will-change:transform}
.story-labels .part-label:hover,.story-labels .part-hovered{border-color:#7b98a9;box-shadow:0 5px 24px #23364418;background:var(--s-bg)}
.story-part-list{display:grid;grid-template-columns:1fr 1fr;gap:8px;max-width:405px}.story-part-list button{display:flex;align-items:center;justify-content:space-between;gap:6px;text-align:left;font-size:11px;color:var(--s-ink);border:1px solid var(--s-line);padding:11px;border-radius:5px;background:transparent}.story-part-list button:hover,.story-part-list .part-hovered{background:var(--s-line)}
.story-view-tabs{display:inline-flex;padding:4px;gap:4px;background:var(--s-line);border-radius:7px}.story-view-tabs button{padding:9px 15px;border-radius:4px;font-size:11px;color:var(--s-muted)}.story-view-tabs [aria-selected="true"]{background:var(--s-ink);color:var(--s-bg);box-shadow:0 2px 6px #18233115}.story-view-description{font-size:11px;line-height:1.6;color:var(--s-muted);margin-top:10px;min-height:36px}
.story-dialog{position:fixed;inset:0 auto 0 clamp(24px,5vw,80px);margin:auto 0;width:min(420px,90vw);max-height:80svh;overflow:auto;border:1px solid var(--s-line);border-radius:14px;padding:32px;background:var(--s-bg);color:var(--s-ink);box-shadow:0 24px 80px #0b172936}
.story-dialog::backdrop{background:#0a142318;backdrop-filter:blur(1px)}.story-dialog .story-kicker{margin:14px 0 20px;font-size:10px}.story-dialog h2{font:400 30px/1.15 var(--disp);letter-spacing:-.04em;margin-bottom:20px}.story-dialog #part-description{font-size:13px;line-height:1.85;color:var(--s-muted)}.story-dialog dl{margin-top:22px}.story-dialog dl>div{display:grid;grid-template-columns:1fr 1.4fr;gap:14px;padding:12px 0;border-bottom:1px solid var(--s-line);font-size:11px}.story-dialog dt{color:var(--s-muted)}.story-dialog dd{text-align:right}.story-dialog-close{position:absolute;right:12px;top:10px;width:34px;height:34px;border:1px solid var(--s-line);border-radius:50%;color:var(--s-ink);font:24px/1 var(--body)}.story-dialog-return{margin-top:22px}.story-dialog :focus-visible{outline:2px solid #7897ac;outline-offset:4px}
.story-colour-lab{border-top:1px solid var(--s-line);padding-top:18px;max-width:405px}.story-swatches{display:grid;grid-template-columns:repeat(10,1fr);gap:7px}.story-swatches button{background:var(--swatch);aspect-ratio:1;min-height:22px;border-radius:4px;border:1px solid #7b87882b;position:relative}.story-swatches button[aria-pressed="true"]{outline:2px solid var(--s-ink);outline-offset:3px}.story-swatches button:hover{transform:translateY(-2px)}
.story-colour-preview{display:grid;grid-template-columns:42px 1fr auto;gap:13px;align-items:center;margin:20px 0}.story-colour-preview>span{height:42px;border-radius:6px;background:#00AEEF;border:1px solid var(--s-line)}.story-colour-preview>div{display:flex;flex-direction:column;gap:3px}.story-colour-preview>div:last-child{text-align:right}.story-colour-preview strong{font-size:13px;font-weight:500}.story-colour-preview div>span{font:10px var(--mono);color:var(--s-muted)}
.story-ratios{display:grid;gap:7px}.story-ratios>div{display:grid;grid-template-columns:15px 1fr 36px;align-items:center;gap:10px;font:10px var(--mono)}.story-ratios i{height:4px;background:var(--s-line);border-radius:5px;overflow:hidden}.story-ratios b{display:block;height:100%;background:var(--channel);transition:width .25s}.story-ratios output{text-align:right;color:var(--s-muted)}.story-white-label{display:flex;justify-content:space-between;font-size:10px;margin:18px 0 7px;color:var(--s-muted)}#story-white{width:100%;accent-color:#7293a7;cursor:pointer}.story-colour-lab~.story-actions{margin-top:22px}
@media(min-width:761px){#story-granules .story-copy h2{font-size:clamp(36px,3.3vw,53px)}#story-granules .story-lead{margin-bottom:18px}#story-granules{padding-top:70px}.story-dialog{max-width:36vw}}
@media(max-width:760px){
 .story-stage{inset:0 5%}.story-labels .part-label{padding:7px;max-width:130px}.story-labels .part-label b{font-size:8px}.story-labels .part-label span{font-size:7px;max-width:116px}
 .story-part-list{gap:6px}.story-part-list button{font-size:10px;padding:10px}.story-view-tabs button{padding:9px 12px}.story-view-description{font-size:10px}.story-view-tabs{margin-bottom:0}
 .story-dialog{inset:auto 10px 12px;margin:0;width:calc(100% - 20px);max-width:none;max-height:52svh;padding:20px}.story-dialog h2{font-size:25px}.story-dialog .story-kicker{margin:5px 35px 12px 0;font-size:8px}.story-dialog #part-description{font-size:12px}.story-dialog dl{margin-top:12px}.story-dialog dl>div{padding:9px 0;font-size:10px}.story-dialog .story-footnote{margin-top:12px}.story-dialog-return{margin-top:14px}
 #story-granules{min-height:180svh}.story-colour-lab{padding-top:14px}.story-swatches{gap:6px}.story-colour-preview{margin:16px 0}.story-ratios{gap:6px}
 .story-chapters{gap:6px}.story-chapters a{gap:4px}.story-chapters i{width:9px}.story-bottom{gap:8px}.story-motion{font-size:8px;padding:7px 5px}
}
@media(max-width:360px){.story-chapters{gap:4px}.story-chapters a{font-size:8px;gap:3px}.story-chapters i{width:7px}.story-bottom{padding-right:73px}.story-swatches{gap:5px}}
@media(prefers-reduced-motion:reduce){.story-ratios b,.story-swatches button{transition:none}.story-swatches button:hover{transform:none}}

/* Seven-channel story with telemetry integrated into the physical tablet. */
.story-dialog::backdrop{backdrop-filter:none}
.engineering-story{--s-bg:#F8F9FA}html[data-theme="soft-dark"] .engineering-story{--s-bg:#172126}
.profile-button{display:grid;place-items:center;flex-shrink:0;width:36px;height:36px;border:1px solid var(--line);border-radius:50%;color:var(--ink)}
.profile-dialog{margin:auto;width:min(400px,calc(100vw - 32px));padding:28px;background:var(--s-bg);color:var(--s-ink);border:1px solid var(--s-line);border-radius:16px;box-shadow:0 20px 70px #14263130}.profile-dialog::backdrop{background:#10212c40;backdrop-filter:blur(5px)}.profile-dialog h2{font-size:24px;font-weight:400;margin-bottom:16px}.profile-dialog p{font-size:13px;color:var(--s-muted);margin-bottom:22px}.profile-languages{display:flex;gap:10px}.profile-languages button,.profile-theme{padding:10px 14px;border:1px solid var(--s-line);border-radius:6px;color:var(--s-ink);font-size:12px}.profile-languages [aria-pressed="true"]{background:var(--s-ink);color:var(--s-bg)}.profile-theme{margin:15px 0 24px}.profile-dialog :focus-visible,.profile-button:focus-visible{outline:2px solid #7293a7;outline-offset:4px}
@media(max-width:760px){body>nav .cart-btn>span[data-i]{position:absolute;width:1px;height:1px;overflow:hidden;clip-path:inset(50%)}body>nav .cart-btn{padding:7px}.profile-button{width:30px;height:30px}}
.story-swatches{grid-template-columns:repeat(7,1fr);gap:5px;max-width:294px}.story-swatches button{max-height:32px;aspect-ratio:auto;height:25px}
.story-feed-copy{font-size:12px;line-height:1.8;color:var(--s-muted);margin:0 0 18px;max-width:405px}
.engineering-story[data-chapter="1"] .story-status,.engineering-story[data-chapter="2"] .story-status,.engineering-story[data-chapter="4"] .story-status{display:none}
@media(min-width:761px){#story-granules .story-copy{padding-top:0}#story-granules{min-height:145svh}.story-colour-preview{margin:14px 0}.story-ratios{gap:5px}}
@media(max-width:760px){.story-feed-copy{font-size:11px}#story-module{min-height:160svh}#story-granules{min-height:200svh}.story-swatches button{height:23px}}