/* Homepage art direction: warm industrial editorial, one grid and one type scale. */
:root{--paper:#faf9f5;--ink:#252724;--muted:#6b6b64;--line:#d8d7cf;--orange:#b65b36;--gutter:clamp(24px,5vw,88px);--section-space:clamp(64px,7vw,112px)}
body{font-size:15px;line-height:1.7;-webkit-font-smoothing:antialiased}
header{height:84px;padding:0 var(--gutter);gap:28px;background:#eeece7;border-bottom:1px solid var(--line)}
.logo{font-size:34px;letter-spacing:-2px}.logo span{font-size:8px;letter-spacing:1.3px;margin-left:18px}
nav{gap:clamp(16px,2vw,30px);align-items:center;font-size:12px}.navcta{padding:11px 17px;font-size:11px}
a:focus-visible,button:focus-visible,input:focus-visible,select:focus-visible,textarea:focus-visible{outline:2px solid var(--orange);outline-offset:5px}
.eyebrow{font:10px/1.6 monospace;letter-spacing:1.5px;color:var(--orange)}
h1,h2,h3{text-wrap:balance}h2{font-size:clamp(34px,3.7vw,56px);font-weight:500;letter-spacing:-1.8px;line-height:1.09}
p{line-height:1.8}.note{font-size:11px;line-height:1.75}
.hero{display:grid;grid-template-columns:minmax(0,1.6fr) minmax(0,1fr);gap:0 8%;padding:48px var(--gutter) 20px;min-height:0;overflow:visible;background:#eeece7}
.hero>.eyebrow{grid-column:1/-1}.hero h1{font-size:clamp(48px,6.1vw,88px);font-weight:500;line-height:.99;letter-spacing:-3.8px;margin:24px 0 28px;max-width:none}.hero h1 span{color:var(--ink)}
.hero .intro{position:static;width:auto;align-self:center;margin:24px 0;font-size:15px;line-height:1.8;color:#61635e;max-width:390px}
.hero>.textlink{justify-self:start;grid-column:1/-1;margin:0 0 32px;font-size:12px;padding-bottom:7px}.hero .textlink span{margin-left:26px}
.heroimg{position:relative;inset:auto;width:100%;grid-column:1/-1;background:#d3d3d1;overflow:hidden;isolation:isolate}
.heroimg img{display:block;width:100%;height:auto;object-fit:contain;mix-blend-mode:normal}
.hero .imgnote{position:static;display:block;text-align:right;padding:12px 0 10px;background:#eeece7;color:var(--muted);font-size:8px;letter-spacing:.8px}
.hero>.view-tabs{position:static;grid-column:1/-1;gap:30px;border-top:1px solid var(--line);border-bottom:0;overflow:auto;scrollbar-width:thin}
.hero>.view-tabs button{min-height:48px;padding:13px 0;font:12px 'DM Sans',sans-serif;box-shadow:none;color:var(--muted)}
.hero>.view-tabs button[aria-pressed=true]{box-shadow:inset 0 2px var(--orange);color:var(--ink)}
.spin-controls{position:static;grid-column:1/-1;padding:8px 0 20px;gap:22px;font:10px monospace;color:var(--muted);align-items:center}
.spin-controls input{width:clamp(160px,28vw,380px);height:24px;cursor:ew-resize}.spin-controls button{min-width:138px;min-height:38px;padding:9px 14px;border-color:#bcbcb3;font:11px 'DM Sans',sans-serif}
.herofoot{position:static;grid-column:1/-1;padding:13px 0 0;font-size:8px;letter-spacing:1px;color:var(--muted)}
.section{padding:var(--section-space) var(--gutter);border:0}
.sectionhead{display:grid;grid-template-columns:minmax(0,1.4fr) minmax(0,1fr);column-gap:10%;row-gap:20px;margin-bottom:48px;align-items:start}
.sectionhead>.eyebrow{grid-column:1/-1;color:var(--orange)}.sectionhead>h2{grid-column:1}.sectionhead>p{grid-column:2;max-width:460px;font-size:14px;line-height:1.85;align-self:end;margin:0;color:var(--muted)}
.product-summary{margin:0 var(--gutter);padding:64px 0;display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:28px 10%;border-top:0;border-bottom:1px solid var(--line)}
.product-summary h2{font-size:clamp(28px,3vw,42px);line-height:1.12;margin:20px 0}.product-summary p{font-size:14px;max-width:440px}.product-summary .textlink{margin-top:12px;font-size:12px}
.product-summary dl{display:grid;grid-template-columns:1fr 1fr;gap:24px 36px;margin:0;align-content:center}.product-summary dl div{padding-top:16px}.product-summary dt{padding:0;font-size:12px}.product-summary dd{font-size:clamp(30px,3.1vw,44px);font-weight:400;letter-spacing:-1px;margin:12px 0 0;font-variant-numeric:tabular-nums}.product-summary small{font-size:15px;letter-spacing:0}.product-summary>.note{grid-column:1/-1;font-size:10px;margin:0;max-width:none}
.engineering{grid-template-columns:minmax(0,1.35fr) minmax(340px,1fr);gap:48px;align-items:start}.side-dimension{position:sticky;top:24px;padding:0;align-self:start}.envelope{padding:0}.envelope strong{font-size:50px;letter-spacing:-2px}.envelope>div>span{font-size:9px}.envelope small{font-size:20px}.envelope p{font-size:12px;line-height:1.75}.envelope details{margin-top:20px;padding-top:14px}.envelope details summary{font-size:12px}.envelope details dl{margin-top:12px}.envelope dl{margin-top:24px;grid-template-columns:1.15fr 1fr;column-gap:16px}.envelope dt,.envelope dd{font-family:'DM Sans',sans-serif;font-size:12px;line-height:1.6;padding:13px 0}.envelope dt{color:var(--ink)}.envelope dd{font-variant-numeric:tabular-nums}.spec-entry{margin:0 0 38px;padding:18px 0;font-size:13px;align-items:center}.spec-entry span:last-child{font-size:11px}
.mass-disclosure{margin:0 var(--gutter) 20px;padding:0;border-top:0}.mass-disclosure summary{padding:18px 0;font-size:13px}.mass-disclosure .fit-section{padding:32px;gap:48px;background:#eeece7}.mass-disclosure h3{font-size:28px}.mass-inputs input{font-size:24px}
.systemgrid{gap:48px;grid-template-columns:minmax(0,1.45fr) minmax(0,1fr);align-items:start}.systemimage{padding:20px;background:#eeece7}.systemimage img{width:100%;height:auto;object-fit:contain;mix-blend-mode:normal}.systemimage span{font-size:8px;line-height:1.7;margin-top:14px}.systems button{grid-template-columns:20px 96px 1fr;gap:14px;padding:19px 0;min-height:68px}.systems strong{font-size:20px}.systems small{font-size:11px;line-height:1.6}.systems button[aria-selected=true]{border-top-color:var(--orange)}#system-copy{font-size:13px;line-height:1.85;margin-top:22px}.metrics{margin-top:44px;gap:30px}.metrics>div{padding-top:20px;border-top-color:#a7aaa0}.metrics b{font-size:40px;line-height:1.2;letter-spacing:-1.6px;font-variant-numeric:tabular-nums}.metrics h3{margin:16px 0 8px;font-size:13px}.metrics p{max-width:220px;font-size:11px;line-height:1.75;margin:0}.specdetail{gap:32px}
.component-details{padding-top:20px}.component-row{grid-template-columns:minmax(0,1.45fr) minmax(0,1fr);gap:8%;padding:38px 0;align-items:center}.component-row:nth-of-type(even)>a{order:0}.component-row img{width:100%;height:auto;aspect-ratio:auto;object-fit:contain;background:transparent}.component-row h3{font-size:clamp(26px,2.6vw,38px);line-height:1.16;letter-spacing:-1px;margin:18px 0}.component-row p{font-size:14px;line-height:1.85;max-width:440px}.component-row small{font-size:8px;line-height:1.9;margin-top:22px;max-width:360px;letter-spacing:.4px}.component-row>a>span{font-size:8px;letter-spacing:1px;padding-top:12px}
.applications{background:#eeece7}.opportunities{grid-template-columns:repeat(4,minmax(0,1fr));gap:32px}.opportunities article{border-color:#b8bcb2;padding-top:20px}.opportunities article>span{font-size:9px}.opportunities h3{font-size:24px;line-height:1.2;letter-spacing:-.6px;margin:22px 0 16px}.opportunities p{font-size:13px;line-height:1.85;margin:0}
.assembly-control{font-size:9px;margin-bottom:12px}.assembly-control button{min-height:40px;font-size:11px}.interface-drawing{margin-bottom:38px;padding:32px 0}.interface-drawing .note{padding-left:0;font-size:8px}.roles{gap:28px}.roles article,.roles article:first-child,.roles article:last-child{padding:26px 0}.roles .interface{padding:26px;background:transparent;border-top:2px solid var(--orange)}.roles article>span{font-size:9px;letter-spacing:1.1px}.roles h3{font-size:25px;margin:20px 0 14px;letter-spacing:-.5px}.roles p,.roles li{font-size:13px;line-height:1.85}.roles ul{margin-top:22px}.interface-spec{padding-top:0;margin-top:56px}.interface-spec .sectionhead{margin-bottom:30px}.interface-spec h2{font-size:32px;line-height:1.2;letter-spacing:-1px}.interface-table>div{gap:32px;padding:20px 0}.interface-table p{font-size:13px}.interface-table span{font-size:12px}.interface-table b{font-size:10px}
.detailstrip{margin:0 var(--gutter);grid-template-columns:minmax(0,1fr) minmax(0,1fr);background:#292c28}.detailstrip img{width:100%;min-height:0;height:auto;align-self:center;object-fit:contain;background:transparent}.detailstrip>div{padding:44px}.detailstrip h2{font-size:38px;line-height:1.13}.detailstrip p{font-size:13px;line-height:1.9}.detailstrip .note{font-size:9px;line-height:1.8}
.brief{grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:10%}.brief h2{margin:24px 0}.brief>div>p{max-width:440px;font-size:14px}.brief form{padding-top:0}.brief form label{font-size:12px;margin-bottom:26px}.brief .process{gap:20px;margin-top:36px;padding-top:25px}.brief .process h4{font-size:13px}.brief .process p{font-size:11px}.primary{min-height:52px;font-size:13px}.primary:hover{background:#41463e;color:white}footer{padding:42px var(--gutter);background:#eeece7;gap:28px}footer p{line-height:1.7}footer>span{line-height:1.8}
@media(min-width:1700px){main{max-width:1700px;margin:auto}header,footer{padding-inline:max(var(--gutter),calc((100vw - 1530px)/2))}}
@media(max-width:1100px){.logo span{display:none}nav{gap:16px;font-size:11px}.hero{gap:0 5%}.engineering{grid-template-columns:1fr}.side-dimension{position:static;max-width:100%}.envelope dl{grid-template-columns:1.2fr 1fr}.systemgrid{gap:30px}.systemimage img{height:auto}.systems button{grid-template-columns:18px 82px 1fr;gap:10px}.opportunities{grid-template-columns:repeat(2,minmax(0,1fr));gap:32px 44px}.detailstrip>div{padding:32px}.detailstrip h2{font-size:32px}.roles{gap:20px}}
@media(max-width:800px){header{height:72px}nav a:not(.navcta){display:none}.hero{grid-template-columns:1fr;padding-top:34px}.hero h1{font-size:clamp(46px,8vw,66px);letter-spacing:-2.5px}.hero .intro{margin:0 0 24px;max-width:520px;font-size:14px}.hero>.textlink{margin-bottom:28px}.heroimg img{height:auto}.sectionhead{grid-template-columns:1fr;gap:20px;margin-bottom:36px}.sectionhead>h2,.sectionhead>p{grid-column:1}.sectionhead>p{max-width:560px;align-self:start}.product-summary{gap:28px 6%}.product-summary h2{font-size:32px}.product-summary dd{font-size:32px}.systemgrid{grid-template-columns:1fr;gap:26px}.systemimage img{height:auto}.systems button{grid-template-columns:24px 100px 1fr}.roles{grid-template-columns:1fr;gap:12px}.roles article,.roles article:first-child,.roles article:last-child,.roles .interface{padding:24px 0!important}.roles ul{margin-top:14px}.component-row{gap:5%;grid-template-columns:1.2fr 1fr}.component-row h3{font-size:27px}.component-row p{font-size:13px}.detailstrip{grid-template-columns:1fr}.detailstrip img{height:auto;max-height:none}.detailstrip>div{padding:36px}.brief{grid-template-columns:1fr;gap:40px}.brief>div>p{max-width:560px}.mass-disclosure .fit-section{grid-template-columns:1fr;gap:24px}.interface-spec h2{font-size:30px}.interface-table>div{grid-template-columns:1fr 1.5fr;gap:14px}.interface-table span{grid-column:2}footer{flex-wrap:wrap}footer>span{width:100%;text-align:left;margin:0}}
@media(max-width:550px){.hero h1{font-size:46px}.hero>.view-tabs{gap:26px}.hero>.view-tabs button{font-size:11px;flex:none}.spin-controls{gap:12px;padding-bottom:16px}.spin-controls button{min-width:118px;font-size:10px}.spin-controls input{flex:1;min-width:80px;width:100px}.spin-controls span{display:none}.herofoot span:last-child{display:none}.hero .imgnote{font-size:7px;letter-spacing:.4px}.herofoot{font-size:7px;letter-spacing:.6px}.sectionhead{display:grid}.sectionhead h2{margin:0}.sectionhead p{max-width:none}.product-summary{grid-template-columns:1fr;padding:44px 0}.product-summary h2{font-size:32px}.product-summary dl{gap:24px}.product-summary dd{font-size:34px}.product-summary p{font-size:13px}.spec-entry{display:block}.spec-entry span{display:block}.spec-entry span:last-child{margin-top:7px;font-size:10px}.envelope dl{gap:0 16px}.envelope dt,.envelope dd{font-size:11px}.metrics{grid-template-columns:1fr 1fr;gap:28px 20px}.metrics b{font-size:32px}.metrics b span{font-size:13px;margin-left:6px}.metrics h3{font-size:12px}.component-row{grid-template-columns:1fr;gap:20px;padding:28px 0}.component-row img{aspect-ratio:auto}.component-row h3{font-size:29px}.component-row p{font-size:14px}.component-row small{margin-top:16px}.opportunities{gap:30px 24px}.opportunities h3{font-size:22px}.opportunities p{font-size:12px}.interface-drawing{overflow-x:auto}.interface-drawing svg{min-width:540px}.interface-table>div{grid-template-columns:1fr;gap:7px}.interface-table span{grid-column:1}.detailstrip>div{padding:28px}.detailstrip h2{font-size:32px}.mass-disclosure .fit-section{padding:24px}.mass-inputs{gap:20px}.mass-inputs output{font-size:17px}.systemimage img{height:auto}.specdetail{grid-template-columns:1fr;gap:10px}.process{grid-template-columns:repeat(2,1fr)}footer .logo{font-size:30px}}
@media(max-width:380px){.hero h1{font-size:40px}.opportunities{grid-template-columns:1fr}.systems button{grid-template-columns:18px 78px 1fr}.systems small{font-size:10px}.formrow{grid-template-columns:1fr;gap:0}}
@media(prefers-reduced-motion:reduce){a,button,#upper-assembly{transition:none}}

/* Scroll-driven side-to-plan product study. Image retains its native ratio. */
.scroll-stage{grid-column:1/-1;position:relative;height:180vh;min-width:0}
.scroll-stage .heroimg{position:sticky;top:0;margin:0 auto;width:min(100%,112vh);background:transparent;overflow:hidden}
.scroll-stage .heroimg img{height:auto;width:100%;object-fit:contain}
.scroll-stage .imgnote{background:var(--paper)}
@media(max-width:800px){.scroll-stage{height:135vh}.scroll-stage .heroimg{top:8vh;width:100%}}
@media(prefers-reduced-motion:reduce){.scroll-stage{height:auto}.scroll-stage .heroimg{position:relative;top:auto}}

/* Edge-to-edge, viewport-height scroll canvas. */
.scroll-stage{width:100vw;max-width:none;position:relative;left:50%;transform:translateX(-50%);height:220vh}
.scroll-stage .heroimg{width:100%;max-width:none;height:100vh;top:0;margin:0;background:#eeece7}
.scroll-stage .heroimg img{width:100%;height:100%;object-fit:contain}
.scroll-stage .imgnote{position:absolute;bottom:20px;right:4%;padding:0;background:transparent;font-size:9px;pointer-events:none}
@supports(height:100svh){.scroll-stage .heroimg{height:100svh}}
@media(prefers-reduced-motion:reduce){.scroll-stage{height:100vh}.scroll-stage .heroimg{position:relative}}

/* 2026-10-28: full-bleed stage without 100vw scrollbar overflow. */
.scroll-stage{width:auto;left:auto;transform:none;margin-inline:calc(-1 * var(--gutter))}

/* Side-profile dimension figure on the site's warm ground. */
.dim-figure{margin:0;min-width:0}
.dim-title,.dim-note{font:10px/1.6 monospace;letter-spacing:1.2px;color:var(--muted)}
.dim-title{margin-bottom:14px}
.dim-note{letter-spacing:.4px;margin:14px 0 0;max-width:46ch}
.dim-canvas{position:relative;aspect-ratio:2040/600;overflow:hidden;background:#eeece7}
.dim-canvas img{position:absolute;width:117.647%;max-width:none;height:auto;left:-8.824%;top:-70%}
.dim-canvas svg{position:absolute;inset:0;width:100%;height:100%;overflow:visible}
.dim-line{fill:none;stroke:var(--orange);stroke-width:1.5;vector-effect:non-scaling-stroke}
.dim-ref{fill:none;stroke:#9c998f;stroke-width:1;stroke-dasharray:4 4;vector-effect:non-scaling-stroke}
.dim-label{position:absolute;font:11px/1.35 'DM Sans',sans-serif;color:var(--muted);white-space:nowrap}
.dim-label b{display:block;font-weight:500;color:var(--ink);font-size:13px}
.dim-bay{left:13.2%;top:15%;transform:translateY(-100%);font-size:10px}
.dim-deck{left:58%;top:16%;transform:translate(-50%,-100%);text-align:center}
.dim-deck b{font-size:15px}
.dim-height{right:1.5%;top:89%;text-align:right}
.dim-tyre{right:47%;top:89%;text-align:right}
@media(max-width:800px){.dim-canvas{aspect-ratio:2040/760}.dim-canvas img{top:-44.7%}.dim-canvas svg{height:78.9%;top:10.5%}
.dim-label{font-size:9px}.dim-label b{font-size:11px}.dim-deck b{font-size:12px}.dim-bay{display:none}
.dim-bay,.dim-deck{top:calc(10.5% + 16% * .789)}.dim-height,.dim-tyre{top:auto;bottom:2%}.dim-tyre{right:auto;left:0;text-align:left}}
/* Full-width figure; envelope figures read below it. */
.engineering{grid-template-columns:1fr;gap:clamp(36px,4vw,56px)}
.dim-canvas{aspect-ratio:2040/680}.dim-canvas img{top:-61.76%}.dim-canvas svg{height:88.24%}
.dim-bay{top:13.2%}.dim-deck{top:14.1%}.dim-height,.dim-tyre{top:79%}
.dim-label{font-size:12px}.dim-label b{font-size:14px}.dim-deck b{font-size:17px}.dim-bay{font-size:11px}
.envelope{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1.35fr);column-gap:8%;align-items:start}
.envelope>div,.envelope>.note{grid-column:1}.envelope>dl{grid-column:2;grid-row:1 / span 3;margin-top:0}
.envelope>details{grid-column:2}
@media(max-width:800px){.envelope{display:block}.envelope>dl{margin-top:24px}
.dim-canvas{aspect-ratio:2040/860}.dim-canvas img{top:-39.5%}.dim-canvas svg{top:9.3%;height:69.8%}
.dim-label{font-size:9px}.dim-label b{font-size:11px}.dim-deck b{font-size:12px}
.dim-deck{top:calc(9.3% + 16% * .698)}.dim-height,.dim-tyre{top:auto;bottom:1%}}
.envelope dl{column-gap:0}.envelope dd{padding-left:16px}.dim-note{max-width:none}

/* Bring the sticky canvas up under the headline so the side view is in the first fold.
   The upper band of every frame is empty warm-gray background. */
.hero>:not(.scroll-stage){position:relative;z-index:1}
.scroll-stage{margin-top:calc(-1 * min(44vh, 400px));z-index:0}
@supports(height:100svh){.scroll-stage{margin-top:calc(-1 * min(44svh, 400px))}}
/* Portrait screens: enlarge the native-ratio frame so hitch-to-tail fills ~94% of the width. */
@media(max-width:800px) and (orientation:portrait){.scroll-stage .heroimg img{transform:scale(1.24)}}
@media(prefers-reduced-motion:reduce){.scroll-stage{margin-top:0}}
header{position:relative;z-index:3}

/* Readability floor for supporting copy. */
.envelope p,.envelope dt,.envelope dd,.envelope details summary{font-size:14px}
#platform p,#brief p{font-size:13px;line-height:1.7}#platform small{font-size:12px}
.note,.section .note{font-size:12px}.dim-note{font-size:11px}
@media(max-width:800px){.envelope dt,.envelope dd{font-size:13px}}
.scroll-stage.is-alt{margin-top:0;overflow-anchor:none}.scroll-stage{overflow-anchor:none}

/* Typography after vastspace.com: tight display leading, quiet body, one mono for labels. */
:root{--mono:'DM Mono',ui-monospace,SFMono-Regular,Menlo,monospace}
.assembly-control,.component-row small,.component-row>a>span,.datum,.dim-note,.dim-title,.envelope>div>span,.eyebrow,.herofoot,.imgnote,.interface-drawing .note,.interface-table b,.logo span,.opportunities article>span,.roles article>span,.spec-category thead th,.spin-controls,.spin-controls button,.systemimage span,.view-tabs button,.viewer figcaption,footer p,footer span{font-family:var(--mono)}
.eyebrow{font-size:11px;letter-spacing:.08em;text-transform:uppercase}
.hero h1{line-height:.92;letter-spacing:-.048em}
h2{line-height:1.02;letter-spacing:-.034em}
h3{letter-spacing:-.012em}
p{line-height:1.62}
/* Phones: a shorter sticky canvas centred in the viewport; the rail replaces the caption. */
@media(max-width:800px) and (orientation:portrait){
.scroll-stage{height:170svh;margin-top:-20svh}
.scroll-stage .heroimg{height:62svh;top:19svh}
.scroll-stage .imgnote{display:none}}
@media(max-width:800px) and (orientation:portrait) and (prefers-reduced-motion:reduce){.scroll-stage{height:62svh;margin-top:0}}

/* ===== PC polish 2026-10-28 ===== */
/* Hero controls: view tabs left, angle control right, one shared rule. */
@media(min-width:801px){
.hero>.view-tabs{grid-column:1;border-top:1px solid var(--line)}
.hero>.spin-controls{grid-column:2;display:flex;justify-content:flex-end;align-items:center;gap:16px;padding:0;border-top:1px solid var(--line)}
.hero>.spin-controls label{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0)}
.hero>.spin-controls>span{display:none}
.hero>.spin-controls input{width:min(240px,100%)}
.hero>.herofoot{margin-top:8px}}

/* Mass budget sits inside the envelope section as a quiet disclosure row. */
#specifications .mass-disclosure{margin:40px 0 0;border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
#specifications .mass-disclosure summary{padding:20px 0;font-size:14px}

/* Systems image: transparent plan frame on the warm ground. */
.systemimage{padding:24px 24px 18px}
.systemimage span{font-size:10px;letter-spacing:.06em}

/* Development status: warm full-width band, milestones on one line. */
.detailstrip.status{margin:0;display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1.3fr);gap:48px 8%;padding:var(--section-space) var(--gutter);background:#eeece7;color:var(--ink)}
.status>.status-head{padding:0;align-self:center}
.status h2{font-size:clamp(34px,3.7vw,56px);line-height:1.02;margin:20px 0 24px;color:var(--ink)}
.status .note{display:block;color:var(--muted);font-size:11px;letter-spacing:.06em}
.status-visual{margin:0;align-self:center}
.status-visual img{display:block;width:100%;height:auto}
.milestones{grid-column:1/-1;list-style:none;margin:0;padding:0;display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:0 48px;border-top:1px solid #bdb9ae}
.milestones li{position:relative;padding-top:30px}
.milestones li::before{content:"";position:absolute;top:-5px;left:0;width:9px;height:9px;border-radius:50%;background:var(--orange)}
.milestones .ms-no{display:block;margin-bottom:12px;font:11px/1 var(--mono);color:var(--muted);letter-spacing:.08em}
.milestones strong{display:block;margin-bottom:10px;font-size:20px;font-weight:500;letter-spacing:-.01em;color:var(--ink)}
.milestones p{margin:0;max-width:38ch;font-size:14px;line-height:1.62;color:#61635e}
/* Hero children are position:relative (to sit above the canvas); clear the
   legacy absolute offsets from style.css so they don't shift the layout. */
.hero>:not(.scroll-stage){inset:auto}
/* The angle caption belongs to the turning view; hide it once the turn completes. */
.scroll-stage .heroimg .imgnote{transition:opacity .4s ease}
.scroll-stage .heroimg.turn-done .imgnote{opacity:0}
/* Wide screens: warm bands run edge to edge while content keeps main's 1700px measure. */
.hero,#applications,.detailstrip.status{box-shadow:0 0 0 100vmax #eeece7;clip-path:inset(0 -100vmax)}

/* Look closer: three component cards, image over specs. */
.parts{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:clamp(24px,2.4vw,40px);margin-top:clamp(40px,4vw,64px)}
.part{display:flex;flex-direction:column;min-width:0}
.part-img{position:relative;display:block;aspect-ratio:4/3;overflow:hidden;background:#e4e2dc}
.part-img img{display:block;width:100%;height:100%;object-fit:cover}
.part-img span{position:absolute;right:12px;bottom:10px;padding:5px 8px;font:10px/1 var(--mono);letter-spacing:.06em;color:var(--ink);background:rgba(250,249,245,.85);opacity:0;transition:opacity .3s ease}
.part-img:hover span,.part-img:focus-visible span{opacity:1}
.part-img:hover img{transform:scale(1.03)}
.part-body{display:flex;flex-direction:column;flex:1;padding-top:22px}
.part h3{margin:14px 0 18px;font-size:clamp(22px,1.8vw,28px);font-weight:500;line-height:1.1;letter-spacing:-.02em}
.part dl{display:grid;grid-template-columns:auto 1fr;margin:0;border-top:1px solid var(--line)}
.part dt,.part dd{margin:0;padding:11px 0;border-bottom:1px solid var(--line);font-size:13px;line-height:1.45}
.part dt{color:var(--muted);padding-right:16px}
.part dd{color:var(--ink);text-align:right;font-variant-numeric:tabular-nums}
.part-room{margin:18px 0 0;font-size:13px;line-height:1.55;color:#61635e}
.part-room b{display:block;margin-bottom:4px;font:500 10px/1.4 var(--mono);letter-spacing:.08em;text-transform:uppercase;color:var(--orange)}
.component-details .sectionhead{margin-bottom:0}
/* Envelope figures as one strip under the drawing. */
.envelope{display:block}
.envelope .env-strip{display:grid;grid-template-columns:repeat(5,minmax(0,1fr));gap:0;column-gap:0;margin:0;border-top:1px solid #bdb9ae}
.envelope .env-strip>div{padding:18px 20px 18px 0;border-right:1px solid var(--line)}
.envelope .env-strip>div+div{padding-left:20px}
.envelope .env-strip>div:last-child{border-right:0}
.envelope .env-strip dt,.envelope .env-strip dd{display:block;padding:0;border:0;text-align:left}
.envelope .env-strip dt{margin-bottom:10px;font-size:12px;color:var(--muted)}
.envelope .env-strip dd{font-size:20px;font-weight:500;letter-spacing:-.01em;color:var(--ink)}
.envelope>.note{margin:14px 0 0}
.envelope>details{margin-top:28px}

/* Aboard wordmark (assets/aboard-wordmark.svg, inlined; fill follows text colour). */
.logo{display:inline-flex;align-items:center;gap:0;line-height:1;color:var(--ink)}
.logo .wordmark{display:block;height:22px;width:auto}
header .logo span{margin-left:18px;padding-left:18px;border-left:1px solid var(--line);line-height:22px}
footer .logo .wordmark{height:26px}

/* aboard | ARK lockup (brand/ark/aboard-ark-lockup.svg, inlined). viewBox = cap 9g + 1T, so height 24.4px gives a 20px ARK cap. */
.logo .lockup{display:block;height:24.4px;width:auto;color:var(--ink)}
footer .logo .lockup{height:29.3px}

/* Dimension figure: roomier frame. The stage keeps the 2040:600 crop so every
   callout stays registered to the render; the frame adds breathing space. */
@media(min-width:801px){
.dim-canvas{aspect-ratio:auto;padding:clamp(64px,6.5vw,112px) clamp(48px,5.5vw,104px) clamp(80px,7.5vw,128px)}
.dim-stage{position:relative;aspect-ratio:2040/600}
.dim-stage img{position:absolute;width:117.647%;max-width:none;height:auto;left:-8.824%;top:-70%}
.dim-stage svg{position:absolute;inset:0;width:100%;height:100%;overflow:visible}
.dim-stage .dim-bay{top:19%;transform:translateY(-100%)}
.dim-stage .dim-deck{top:17%;transform:translate(-50%,-100%)}
.dim-stage .dim-height,.dim-stage .dim-tyre{top:94%}
.dim-stage .dim-height{right:0}}
.envelope .env-strip dt,.envelope .env-strip dd{white-space:nowrap;overflow:hidden;text-overflow:ellipsis}

/* Core data: the four built-in systems and the build space, each a big number with one line of function. */
.core{padding:var(--section-space) var(--gutter);background:var(--paper)}
.core-statement{margin:24px 0 0;max-width:24ch;font-size:clamp(32px,3.8vw,58px);font-weight:500;line-height:1.04;letter-spacing:-.035em;color:var(--ink)}
.core-group{margin-top:clamp(56px,6vw,96px)}
.core-label{display:block;padding-bottom:14px;border-bottom:1px solid var(--ink);font:11px/1 var(--mono);letter-spacing:.1em;text-transform:uppercase;color:var(--ink)}
.core-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr))}
.core-grid article{padding:28px 28px 8px 0;border-right:1px solid var(--line);min-width:0}
.core-grid article+article{padding-left:28px}
.core-grid article:last-child{border-right:0}
.core-sys{display:block;font:11px/1 var(--mono);letter-spacing:.1em;text-transform:uppercase;color:var(--orange)}
.core-num{display:block;margin:22px 0 10px;font-size:clamp(40px,4.2vw,68px);font-weight:500;line-height:1;letter-spacing:-.045em;color:var(--ink);font-variant-numeric:tabular-nums;white-space:nowrap}
.core-num small{margin-left:.22em;font-size:.3em;font-weight:400;letter-spacing:0;color:var(--muted)}
.core-cap{display:block;font-size:14px;font-weight:500;color:var(--ink)}
.core-grid p{margin:10px 0 0;max-width:30ch;font-size:13px;line-height:1.55;color:#61635e}
.core-foot{display:flex;justify-content:space-between;align-items:center;margin:40px 0 0;padding-top:18px;border-top:1px solid var(--line);font-size:12px;color:var(--muted)}
.core-foot .textlink{font-size:12px}
.core .odo{vertical-align:-.08em}

/* Display type: Sora (geometric, monoline, flat terminals) to match the ARK wordmark. Body stays DM Sans, labels DM Mono. */
:root{--display:'Sora','DM Sans',sans-serif}
h1,h2,h3,.core-statement,.core-num,.statement p,.env-strip dd,.part h3,.milestones strong,.dim-label b,.systems strong,.interface-table p{font-family:var(--display)}
h1{letter-spacing:-.045em}h2{letter-spacing:-.03em}h3{letter-spacing:-.015em}
.hero h1{letter-spacing:-.045em}
.core-statement,.statement p{letter-spacing:-.03em}
.core-num{letter-spacing:-.04em;font-weight:500}
.envelope .env-strip dd{font-weight:500;letter-spacing:-.015em}

/* Component cards share one set of row lines (subgrid): image, label, title, specs, room note. */
.parts{grid-template-rows:auto auto auto auto auto;row-gap:0}
.part{display:grid;grid-row:span 5;grid-template-rows:subgrid;row-gap:0}
.part-body{display:contents}
.part .eyebrow{padding-top:22px}
.part h3{align-self:start}
.part dl{align-self:start}
.part dt,.part dd{white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.part-room{align-self:start}

/* Interface drawing: real chassis frame on the warm ground, projected body box above. */
.interface-drawing{padding:clamp(24px,3vw,48px) clamp(24px,3vw,48px) 20px;background:#eeece7;border:0}
.interface-drawing svg{display:block;width:100%;height:auto;min-width:0}
.interface-drawing .note{display:block;margin-top:12px;font:10px var(--mono);letter-spacing:.06em;color:var(--muted)}
#upper-assembly{transition:transform .9s cubic-bezier(.62,.05,.01,.99)}
.assembled #upper-assembly{transform:translateY(var(--lift))}
.interface-drawing .ifc,.interface-drawing .ifc-legend{transition:opacity .4s ease}
.assembled .ifc{opacity:0}
@media(prefers-reduced-motion:reduce){#upper-assembly{transition:none}}
.interface-drawing svg image{mix-blend-mode:multiply}
/* Six component cards: two rows of three, each row sharing its own subgrid lines. */
.parts{grid-template-rows:repeat(2,auto auto auto auto auto);row-gap:0}
.parts .part:nth-child(n+4){margin-top:clamp(40px,4vw,64px)}

/* Look closer as one row: three visible, scroll-snap, arrows step one card. */
.parts{grid-template-rows:auto auto auto auto auto;grid-auto-flow:column;grid-auto-columns:calc((100% - 2 * var(--parts-gap)) / 3);--parts-gap:clamp(24px,2.4vw,40px);column-gap:var(--parts-gap);overflow-x:auto;scroll-snap-type:x mandatory;scroll-behavior:smooth;scrollbar-width:none;overscroll-behavior-x:contain}
.parts::-webkit-scrollbar{display:none}
.parts .part{scroll-snap-align:start}
.parts .part:nth-child(n+4){margin-top:0}
.parts:focus-visible{outline:2px solid var(--orange);outline-offset:8px}
.component-details .sectionhead{position:relative}
.parts-nav{display:flex;gap:10px;margin-top:24px}
.parts-nav button{width:52px;height:52px;border:1px solid #bdb9ae;border-radius:50%;background:transparent;color:var(--ink);font:18px/1 var(--display);cursor:pointer;transition:background .3s ease,color .3s ease,border-color .3s ease,opacity .3s ease}
.parts-nav button:hover:not(:disabled){background:var(--ink);color:var(--paper);border-color:var(--ink)}
.parts-nav button:disabled{opacity:.3;cursor:default}
.parts.dragging{scroll-snap-type:none;scroll-behavior:auto;cursor:grabbing}
.parts{grid-template-columns:repeat(6,calc((100% - 2 * var(--parts-gap)) / 3));grid-auto-flow:row}
.parts .part{grid-row:1 / span 5}
.component-details .sectionhead .parts-nav{grid-column:2;justify-self:end;align-self:end;margin-top:20px}

/* Roles: three columns share row lines (label, title, text, list); equal padding; hanging list indent. */
@media(min-width:801px){
.roles{grid-template-columns:repeat(3,minmax(0,1fr));grid-template-rows:auto auto auto auto;column-gap:clamp(28px,3vw,48px);row-gap:0}
.roles article,.roles article:first-child,.roles article:last-child,.roles .interface{display:grid;grid-row:span 4;grid-template-rows:subgrid;row-gap:0;padding:26px 0 0!important;background:transparent}
.roles article>span{font-size:11px;letter-spacing:.1em}
.roles h3{margin:22px 0 14px;font-size:clamp(24px,2vw,30px);line-height:1.1;white-space:nowrap}
.roles p{margin:0;max-width:40ch;line-height:1.6}
.roles ul{margin:22px 0 0;padding:0;line-height:1.6}
.roles li{position:relative;padding-left:26px;margin-bottom:10px}
.roles li::before{position:absolute;left:0;top:0;margin:0}}
/* Interface drawing as an engineering sheet: warm paper, faint grid, ink line art, orange interfaces. */
.interface-drawing{background-color:#faf9f5;background-image:linear-gradient(rgba(37,39,36,.055) 1px,transparent 1px),linear-gradient(90deg,rgba(37,39,36,.055) 1px,transparent 1px);background-size:32px 32px;border:1px solid var(--line)}
.interface-drawing svg image{mix-blend-mode:normal}
@media(min-width:801px){.roles li{white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.roles p{min-height:3.2em}}
/* Build space now leads the envelope section. */
#specifications .build-space{margin:clamp(8px,1vw,16px) 0 clamp(48px,5vw,80px)}
.envelope .env-strip{grid-template-columns:repeat(4,minmax(0,1fr))}

/* ===== Phone layouts for the newer blocks ===== */
@media(max-width:800px){
.core-grid{grid-template-columns:repeat(2,minmax(0,1fr));row-gap:8px}
.core-grid article,.core-grid article+article{padding:22px 16px 10px 0;border-right:0}
.core-grid article:nth-child(even){padding-left:16px;border-left:1px solid var(--line)}
.core-num{font-size:clamp(30px,9vw,44px);white-space:normal}
.core-grid p{font-size:12px}
.core-foot{flex-direction:column;align-items:flex-start;gap:10px}
.envelope .env-strip{grid-template-columns:repeat(2,minmax(0,1fr))}
.envelope .env-strip>div,.envelope .env-strip>div+div{padding:14px 12px 14px 0;border-right:0;border-bottom:1px solid var(--line)}
.envelope .env-strip>div:nth-child(even){padding-left:12px;border-left:1px solid var(--line)}
.parts{--parts-gap:16px;grid-template-columns:repeat(6,82%)}
.component-details .sectionhead .parts-nav{grid-column:auto;justify-self:start}
.detailstrip.status{grid-template-columns:1fr;gap:28px}
.milestones{grid-template-columns:1fr;gap:0}
.milestones li{padding:24px 0 20px;border-bottom:1px solid var(--line)}
.milestones li::before{top:-5px}
.interface-drawing{padding:16px 12px 14px}
.dim-canvas{aspect-ratio:auto;padding:24px 12px 40px}
.dim-stage{position:relative;aspect-ratio:2040/600}
.dim-stage img{position:absolute;width:117.647%;max-width:none;height:auto;left:-8.824%;top:-70%}
.dim-stage svg{position:absolute;inset:0;width:100%;height:100%;overflow:visible}
.dim-stage .dim-deck{top:15%;transform:translate(-50%,-100%)}
.dim-stage .dim-height,.dim-stage .dim-tyre{top:auto;bottom:-34px}
.statement p,.core-statement{font-size:clamp(26px,7.4vw,36px)}
}
@media(max-width:800px){.interface-drawing{overflow-x:auto;-webkit-overflow-scrolling:touch}.interface-drawing svg{min-width:820px}}
@media(max-width:800px){.navcta{white-space:nowrap;padding:10px 14px}.logo .lockup{height:20px}header{gap:12px}}