@font-face{font-family:Inter;src:url('/assets/fonts/inter-var-latin.woff2') format('woff2');font-weight:100 900;font-display:swap}*{box-sizing:border-box}html{scroll-behavior:smooth;scroll-padding-top:30px}body{margin:0;color:#17191b;background:#fff;font:15px/1.55 Inter,Arial,sans-serif;--yellow:#ffcf00;--paper:#fff;--ink:#17191b;--muted:#62666b;--line:#dededb;--soft:#f4f4f1}button,input,select{font:inherit}button,a,input,select{-webkit-tap-highlight-color:transparent}button,a{touch-action:manipulation}a{color:inherit}button{cursor:pointer}button:disabled{cursor:default;opacity:.4}button:focus-visible,a:focus-visible,input:focus-visible,select:focus-visible{outline:3px solid #0081d6;outline-offset:4px}button{color:inherit}button svg,a svg{width:19px;height:19px;fill:none;stroke:currentColor;stroke-width:1.8;vertical-align:middle;flex:none}button[hidden],[hidden]{display:none!important}.skip{position:fixed;left:12px;top:-100px;z-index:20;padding:12px;background:var(--yellow);color:#111}.skip:focus{top:12px}.masthead{background:var(--yellow);color:#17191b;padding:0 max(24px,calc((100vw - 1504px)/2));min-height:83px;display:flex;align-items:center;gap:50px}.brand{display:flex;align-items:center;text-decoration:none;gap:12px;font-weight:900;line-height:.96;font-size:20px;letter-spacing:-.7px}.brick-mark{width:45px;height:42px;background:#d52427;position:relative;border:3px solid #fff;box-shadow:0 0 0 1px #b92220;display:grid;place-items:center;transform:rotate(-4deg);color:#fff;font-size:24px;letter-spacing:-3px}.brick-mark::before{content:'';position:absolute;width:8px;height:4px;background:#d52427;top:-7px;left:6px;box-shadow:17px 0 #d52427}.masthead nav{display:flex;gap:28px}.masthead nav a{font-size:13px;font-weight:750;text-decoration:none;padding:18px 0;border-bottom:2px solid transparent}.masthead nav a:hover{border-color:#17191b}.header-tools{margin-left:auto;display:flex;align-items:center;gap:10px}.header-tools a,.header-tools button{display:grid;place-items:center;min-width:44px;min-height:44px;font-size:12px;font-weight:750;background:transparent;border:1px solid #17191b35;text-decoration:none}.breadcrumb{max-width:1504px;margin:auto;padding:22px 24px;color:var(--muted);font-size:11px;letter-spacing:.04em;display:flex;gap:10px}.breadcrumb b{color:var(--ink);font-weight:550}.product{display:grid;grid-template-columns:minmax(0,1.75fr) minmax(330px,1fr);max-width:1504px;padding:0 24px;margin:0 auto;gap:42px}.showcase{position:relative;background:#1d2124;min-height:620px;overflow:hidden;color:#fff}.showcase::before{content:'';position:absolute;inset:0 0 auto;height:5px;background:repeating-linear-gradient(135deg,#ffcf00 0 15px,#1d2124 15px 30px);z-index:4}.stage-label{position:absolute;top:25px;left:26px;z-index:3;pointer-events:none}.stage-label span{font-size:10px;letter-spacing:.19em;color:#ccc}.stage-label strong{display:block;font-size:22px;font-weight:850;letter-spacing:-.7px}.set-watermark{position:absolute;right:20px;top:18px;font-size:74px;line-height:1;font-weight:900;letter-spacing:-5px;color:#ffffff07;z-index:1;pointer-events:none}.visual{position:absolute;inset:50px 0 54px}.preview,.scene-host{position:absolute;inset:0;width:100%;height:100%}.preview{object-fit:contain}.scene-host canvas{display:block;width:100%;height:100%}.scene-host{opacity:0;transition:opacity .4s}.showcase.is-live .scene-host{opacity:1}.showcase.is-live .preview{visibility:hidden}.start-3d{position:absolute;bottom:91px;left:50%;transform:translateX(-50%);z-index:5;background:#ffcf00;color:#151719;border:0;border-radius:30px;min-height:47px;padding:11px 21px;font-weight:750;white-space:nowrap;box-shadow:0 3px 30px #0005}.stage-bottom{position:absolute;bottom:21px;left:25px;right:25px;z-index:3;display:flex;align-items:center;justify-content:space-between;gap:10px}.stage-status{font-size:10px;color:#afb4b6;max-width:58%}.stage-status::before{content:'';display:inline-block;width:5px;height:5px;border-radius:100%;background:#ffcf00;margin-right:7px}.view-tools{display:flex;gap:5px}.view-tools button{border:1px solid #ffffff24;color:#e7e9ea;background:#202528;min-width:40px;min-height:40px;display:grid;place-items:center}.view-tools button:hover{border-color:var(--yellow);color:var(--yellow)}.edition-tag{display:inline-block;font-size:10px;font-weight:800;letter-spacing:.09em;padding:7px 10px;background:#eeedf9;color:#615a9c;text-transform:uppercase;margin:7px 0 14px}.product-copy h1{font-size:clamp(44px,4.8vw,70px);font-weight:900;line-height:.96;letter-spacing:-3.8px;margin:0 0 17px}.product-copy h1 span{display:block}.product-subtitle{margin:0;color:var(--muted);font-size:15px}.brand-pair{display:flex;align-items:center;gap:22px;margin:27px 0 26px;height:41px}.brand-pair img{object-fit:contain;max-height:40px}.brand-pair .kirow-logo{width:106px}.brand-pair .sncf-logo{width:69px}.brand-pair i{display:block;height:26px;border-left:1px solid var(--line)}.stats{display:grid;grid-template-columns:1fr 1fr 1.2fr;border-top:1px solid var(--line);border-bottom:1px solid var(--line);padding:20px 0;margin:0 0 23px}.stats div+div{border-left:1px solid var(--line);padding-left:20px}.stats dt{font-size:28px;font-weight:800;line-height:1.1;letter-spacing:-1px}.stats dd{margin:5px 0 0;font-size:10px;text-transform:uppercase;letter-spacing:.1em;color:var(--muted)}.intro{font-size:14px;line-height:1.7;margin:0 0 24px;max-width:400px}.button{min-height:52px;display:flex;align-items:center;justify-content:center;gap:10px;padding:14px 22px;border:0;text-decoration:none;font-size:13px;font-weight:750}.button-primary{background:var(--yellow);color:#17191b;box-shadow:inset 0 -3px #d5aa00}.button-primary:hover{background:#ffdb32}.button-outline{background:transparent;color:var(--ink);border:1px solid var(--line);margin-top:10px}.button-outline:hover{border-color:var(--ink)}.smallprint{color:var(--muted);font-size:10px;line-height:1.6;margin:16px 0 0}.beneath{max-width:1504px;margin:0 auto;padding:20px 24px 42px;display:flex;align-items:center;gap:32px;color:var(--muted);font-size:11px}.beneath span{display:flex;align-items:center;gap:8px}.beneath svg{width:15px;height:15px;fill:none;stroke:currentColor;stroke-width:1.7}.divider-strip{background:#17191b;color:#fff;padding:24px;display:flex;justify-content:center;gap:30px;align-items:center}.divider-strip p{margin:0;font-size:20px;letter-spacing:-.5px;font-weight:650}.divider-strip span{font-size:10px;letter-spacing:.16em;text-transform:uppercase;color:var(--yellow)}.section{padding:64px 24px;max-width:1504px;margin:auto}.section-header{display:flex;justify-content:space-between;align-items:end;gap:20px;margin-bottom:30px}.eyebrow{font-size:10px;font-weight:800;letter-spacing:.17em;text-transform:uppercase;color:var(--muted);margin:0 0 11px}.section h2{font-size:clamp(28px,3vw,43px);letter-spacing:-1.8px;line-height:1.1;font-weight:850;margin:0}.section-header>p{max-width:400px;margin:0;font-size:13px;color:var(--muted)}.control-grid{display:grid;grid-template-columns:1fr 1fr 1fr 1fr;border:1px solid var(--line);background:var(--soft)}.control{padding:25px}.control+.control{border-left:1px solid var(--line)}.control label{display:flex;justify-content:space-between;gap:10px;font-weight:650;font-size:12px}.control output{font-variant-numeric:tabular-nums;font-weight:500;color:var(--muted)}input[type=range]{display:block;width:100%;height:44px;margin:15px 0 0;accent-color:#c48b00;cursor:pointer}.control p{margin:4px 0 0;color:var(--muted);font-size:11px}.switches{display:flex;flex-wrap:wrap;gap:10px;margin-top:17px}.switches button{border:1px solid var(--line);background:var(--paper);padding:10px 15px;min-height:44px;font-size:12px;display:flex;align-items:center;gap:8px}.switches button[aria-pressed=true]{background:var(--ink);color:var(--paper)}.switches .live-note{font-size:11px;color:var(--muted);margin:auto 0 auto auto}.manual-wrap{background:var(--soft);border-block:1px solid var(--line)}.manual-layout{display:grid;grid-template-columns:minmax(0,1.5fr) minmax(300px,1fr);gap:36px}.manual-preview{background:#e8e9e6;position:relative;min-width:0}.manual-preview img{display:block;width:100%;aspect-ratio:4/3;object-fit:contain}.step-chip{position:absolute;left:22px;top:20px;background:#ffcf00;color:#17191b;display:flex;align-items:baseline;gap:8px;padding:10px 15px;font-size:11px;font-weight:650}.step-chip b{font-size:25px;line-height:1}.manual-copy{align-self:center}.manual-copy h3{font-size:27px;letter-spacing:-1px;line-height:1.2;margin:17px 0 13px}.manual-copy p{font-size:13px;color:var(--muted)}.step-select{display:block;width:100%;min-height:48px;padding:10px;background:var(--paper);color:var(--ink);border:1px solid var(--line);font-size:13px}.step-actions{display:flex;gap:8px;margin-top:20px}.step-actions button{min-width:48px;min-height:48px;background:var(--paper);border:1px solid var(--line)}.step-actions a{flex:1;margin:0;min-height:48px;font-size:12px}.build-note{margin-top:22px;border-top:1px solid var(--line);padding-top:17px;font-size:11px!important;line-height:1.7}.inventory{margin-top:36px;border-top:1px solid var(--line);border-bottom:1px solid var(--line)}.inventory summary{cursor:pointer;font-weight:700;padding:20px 0;font-size:14px}.table-scroll{overflow:auto}table{width:100%;border-collapse:collapse;font-size:12px}td,th{text-align:left;padding:10px;border-bottom:1px solid var(--line)}th{color:var(--muted);font-size:10px;text-transform:uppercase;letter-spacing:.07em}td:last-child,th:last-child{text-align:right}.inventory-links{display:flex;gap:20px;padding:18px 0;font-size:12px}.story{display:grid;grid-template-columns:1fr 1fr;gap:80px}.story p{font-size:14px;color:var(--muted);line-height:1.8;margin:0 0 18px}.story a{text-underline-offset:3px}.story h2{max-width:450px}.story .real-stats{display:flex;gap:35px;border-top:1px solid var(--line);padding-top:20px}.real-stats strong{font-size:26px;color:var(--ink);display:block;letter-spacing:-1px}.real-stats span{font-size:10px;color:var(--muted);text-transform:uppercase;letter-spacing:.08em}footer{background:#17191b;color:#b7b9bc;padding:26px max(24px,calc((100vw - 1456px)/2));display:flex;justify-content:space-between;gap:20px;font-size:10px}footer strong{color:#ffcf00;font-weight:700;letter-spacing:.1em}footer p{margin:5px 0 0;max-width:620px}.touch-exit{position:absolute;top:84px;right:15px;z-index:6;min-height:44px;border:1px solid #ffffff55;background:#181c1fe8;color:white;padding:8px 12px;font-size:11px}.noscript{padding:10px 24px;background:var(--soft);font-size:12px}.dark{--paper:#222629;--ink:#f5f4ef;--muted:#b3b5b5;--line:#414649;--soft:#292e31;background:var(--paper);color:var(--ink)}.dark .edition-tag{background:#35313f;color:#d5c4f3}.dark .kirow-logo{filter:brightness(0) invert(1)}.dark .showcase{outline:1px solid #414649}.dark .brand-pair{padding:0}.dark input[type=range]{accent-color:#ffcf00}
@media(min-width:1600px){.showcase{min-height:690px}.visual{inset:40px 0 45px}}
@media(max-width:1100px){.masthead{gap:28px}.product{gap:25px;grid-template-columns:minmax(0,1.5fr) minmax(300px,1fr)}.showcase{min-height:590px}.product-copy h1{font-size:52px}.stats div+div{padding-left:12px}.stats dt{font-size:24px}.control{padding:19px}.manual-layout{gap:25px}.divider-strip p{font-size:17px}}
@media(max-width:780px){.masthead{min-height:72px;padding:0 20px;gap:15px}.masthead nav{display:none}.brand{font-size:17px}.brick-mark{width:37px;height:35px;font-size:21px}.header-tools{gap:7px}.breadcrumb{padding:16px 20px;font-size:10px}.product{display:flex;flex-direction:column;padding:0 20px;gap:25px}.showcase{min-height:0;height:440px;order:1}.product-copy{display:contents}.edition-tag{margin:0;width:fit-content;order:0;align-self:flex-start;font-size:9px}.product-copy h1{order:0;margin:-14px 0 -13px;font-size:clamp(42px,9.5vw,68px);letter-spacing:-2.4px;line-height:1}.product-copy h1 span{display:inline}.product-copy h1 span+span::before{content:' '}.product-subtitle{order:0;font-size:13px;margin:-5px 0 -6px}.brand-pair{order:2;margin:0;height:33px}.brand-pair img{max-height:32px}.brand-pair .sncf-logo{width:60px}.brand-pair .kirow-logo{width:99px}.stats{order:3;margin:-6px 0 -5px;padding:17px 0}.stats dt{font-size:26px}.stats div+div{padding-left:26px}.intro{order:4;margin:0;max-width:none}.product-actions{order:5}.smallprint{font-size:10px}.beneath{padding:20px 20px 30px;gap:15px;flex-wrap:wrap;font-size:10px}.stage-label{top:21px;left:18px}.stage-label strong{font-size:18px}.stage-label span{font-size:9px}.set-watermark{font-size:57px}.visual{inset:60px 0 59px}.stage-bottom{left:16px;right:16px;bottom:15px}.stage-status{font-size:9px;max-width:54%}.view-tools button{min-height:44px;min-width:44px}.start-3d{bottom:74px;min-height:44px;font-size:12px}.divider-strip{padding:23px 20px;display:block;text-align:center}.divider-strip p{font-size:18px;line-height:1.35;margin-bottom:8px}.divider-strip span{font-size:9px}.section{padding:43px 20px}.section-header{display:block;margin-bottom:24px}.section-header>p{margin:15px 0 0;max-width:none}.section h2{letter-spacing:-1px}.control-grid{grid-template-columns:1fr 1fr}.control{padding:18px}.control:nth-child(3){border-left:0}.control:nth-child(n+3){border-top:1px solid var(--line)}.switches{gap:8px}.switches button{padding:10px 12px;font-size:11px;flex:1;justify-content:center}.switches .live-note{width:100%;margin:6px 0 0}.manual-layout{display:flex;flex-direction:column;gap:20px}.manual-copy{align-self:stretch}.manual-copy h3{font-size:24px;margin:19px 0 12px}.manual-preview img{aspect-ratio:4/3}.manual-preview .step-chip{left:16px;top:15px}.story{grid-template-columns:1fr;gap:25px}.story .real-stats{gap:24px}.real-stats strong{font-size:23px}footer{display:block;padding:24px 20px}footer>span{display:block;margin-top:17px}.touch-exit{top:70px;font-size:10px}.table-scroll{margin:0 -4px}td,th{padding:9px 4px;font-size:11px}}
@media(max-width:390px){.showcase{height:380px}.stage-status{max-width:45%}.product-copy h1{font-size:40px}.stats div+div{padding-left:18px}.control label{font-size:11px}.control{padding:14px}.start-3d{bottom:73px}.set-watermark{font-size:49px}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}*,*::before,*::after{transition:none!important;animation:none!important}}
@media print{.masthead,.breadcrumb,.start-3d,.view-tools,.control-grid,.switches,.header-tools,.step-actions,footer{display:none}.showcase{height:420px;min-height:0}.product{display:block}.product-copy h1{margin-top:30px}.product-copy .button{display:none}.section{padding:24px}.manual-preview{max-width:500px}.story{display:block}body{color:#111!important;background:white!important}.product-copy,.section{break-inside:avoid}}
/* The same renderer moves here while the controls are in view. */
.control-workspace{display:grid;grid-template-columns:minmax(0,1.45fr) minmax(320px,1fr);gap:22px}.control-view{position:relative;min-height:310px;background:#1d2124;overflow:hidden}.control-view .start-3d{bottom:20px}.control-workspace .control-grid{grid-template-columns:1fr 1fr}.control-workspace .control:nth-child(3){border-left:0}.control-workspace .control:nth-child(n+3){border-top:1px solid var(--line)}.control-view.is-live .scene-host{opacity:1}.control-view.is-live .preview{visibility:hidden}.inventory-links a{padding:10px 0;min-height:44px}.inventory-links{flex-wrap:wrap}.scene-host:focus-visible{outline:3px solid #0081d6;outline-offset:-3px}
@media(max-width:780px){.control-workspace{display:flex;flex-direction:column;gap:0}.control-view{min-height:250px;height:250px}.control-workspace .control-grid{grid-template-columns:1fr 1fr}.control-workspace .control{padding:12px 16px}.control-workspace input[type=range]{margin-top:6px}.control-workspace .control p{font-size:10px}.control-view .start-3d{bottom:15px}.story a{display:inline-block;padding:10px 0}}
@media(pointer:coarse){.view-tools button{min-width:44px;min-height:44px}}
@media(max-width:780px){.product-copy h1 span{display:block}.product-copy h1 span+span::before{content:none}.breadcrumb>span:nth-child(3),.breadcrumb>span:nth-child(4){display:none}.product-copy h1{margin:-12px 0 -8px}}
.control-status{font-size:11px;color:var(--muted);margin:12px 0 0}.control-view .touch-exit{top:12px;right:12px}
.scene-host canvas:focus-visible{outline:3px solid #0081d6;outline-offset:-4px}
.scene-host{pointer-events:none}.is-live .scene-host{pointer-events:auto}
/* Part references remain available in the static guide and full inventory. */
.table-scroll{position:relative}
.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}.parts-label{font-size:11px!important;font-weight:750;color:var(--ink)!important;margin:20px 0 7px!important}.part-chips{list-style:none;padding:0;margin:0;display:flex;flex-wrap:wrap;gap:6px}.part-chips li{margin:0;max-width:100%}.part-chips a{display:block;padding:7px 9px;background:var(--paper);border:1px solid var(--line);font-size:11px;line-height:1.5;text-decoration:none;overflow-wrap:anywhere}.part-chips a:hover{border-color:var(--ink);text-decoration:underline;text-underline-offset:3px}.step-empty{font-size:11px!important;margin:0!important}.complete-guide{margin-top:30px;border-top:1px solid var(--line)}.complete-guide>summary{cursor:pointer;font-size:14px;font-weight:700;padding:20px 0}.assembly-step{border-top:1px solid var(--line);padding:0 0 0 16px}.assembly-step>summary{padding:15px 0;cursor:pointer;font-size:13px;font-weight:650}.assembly-step>p{font-size:13px;color:var(--muted);max-width:75ch;margin:0 0 14px}.assembly-step .part-chips{padding-bottom:20px}.assembly-step .step-empty{padding-bottom:15px}.catalogue-note{font-size:13px;max-width:85ch;color:var(--muted);line-height:1.7;margin:0 0 10px}.catalogue-date{font-size:11px;color:var(--muted);margin:0 0 24px}.inventory-search{margin:0 0 20px;max-width:540px}.inventory-search label{display:block;font-size:12px;font-weight:650;margin:0 0 8px}.inventory-search>div{display:flex;gap:8px}.inventory-search input{min-width:0;flex:1;min-height:46px;background:var(--paper);color:var(--ink);border:1px solid var(--line);padding:9px 12px}.inventory-search button{min-height:46px;background:var(--paper);color:var(--ink);border:1px solid var(--line);padding:9px 16px}.inventory-search p{font-size:11px;color:var(--muted);margin:8px 0 0}.inventory tbody th{font-size:12px;letter-spacing:0;text-transform:none;font-weight:500;color:var(--ink);min-width:128px}.inventory tbody th strong{font-weight:750}.inventory tbody th small{display:block;font-size:10px;color:var(--muted);font-weight:500;margin-top:4px}.inventory td,.inventory tbody th{vertical-align:top;padding:16px 10px}.inventory td:nth-child(2){min-width:170px}.inventory td:last-child,.inventory th:last-child{text-align:left}.inventory .part-quantity{text-align:right;font-variant-numeric:tabular-nums}.part-state{display:block;font-size:11px;line-height:1.6;min-width:170px}.part-state.needs-check{font-weight:750;color:#9d3e00}.dark .part-state.needs-check{color:#ffbb75}.part-sources{display:flex;flex-wrap:wrap;gap:0 14px;margin-top:4px}.part-sources a{font-size:11px;padding:8px 0;text-underline-offset:3px}.inventory tr:target{background:#ffcf001c}.table-scroll:focus-visible{outline:3px solid #0081d6;outline-offset:3px}.search-empty{font-size:13px;padding:16px 0;color:var(--muted)}summary:focus-visible{outline:3px solid #0081d6;outline-offset:3px}::selection{background:#ffcf00;color:#17191b}
@media(pointer:coarse){.part-chips a,.part-sources a{min-height:44px;display:flex;align-items:center}}
@media(max-width:780px){.part-chips a{font-size:11px}.assembly-step{padding-left:8px}.inventory tbody th{min-width:120px}.inventory-search button{padding-inline:12px}.catalogue-note{font-size:12px}.complete-guide{margin-top:24px}}
@media print{.inventory-search{display:none!important}.part-chips a{border-color:#bbb}.inventory td,.inventory tbody th{padding:8px}.inventory-links a{color:#111}.part-sources a{overflow-wrap:anywhere}}
/* Keep Safari's top browser tint aligned with the opaque yellow header. */
html{background:#ffcf00;scroll-padding-top:calc(112px + env(safe-area-inset-top,0px))}body,body.dark{background:#ffcf00}main{background:var(--paper)}.masthead{position:sticky;top:0;z-index:10;background:#ffcf00;padding-top:env(safe-area-inset-top,0px);min-height:calc(83px + env(safe-area-inset-top,0px))}
@media(max-width:780px){html{scroll-padding-top:calc(92px + env(safe-area-inset-top,0px))}.masthead{min-height:calc(72px + env(safe-area-inset-top,0px));padding-left:max(20px,env(safe-area-inset-left,0px));padding-right:max(20px,env(safe-area-inset-right,0px))}}
@media print{html,body,body.dark,main{background:#fff}}
/* An opaque caption keeps both label lines legible against the outdoor sky. */
.stage-label{top:15px;left:13px;max-width:calc(100% - 26px);padding:10px 13px 12px;background:#1d2124;color:#fff}.stage-label span{display:block}.stage-label strong{color:#fff;line-height:1.25}
@media(max-width:780px){.stage-label{top:11px;left:5px;max-width:calc(100% - 10px)}}