:root{font-family:Poppins,Arial,sans-serif;color:#1b1c19;background:#e2e3e0;--paper:#e2e3e0;--ink:#1b1c19;--muted:#4a4c46;--accent:#f15b27;--accent-ink:#a8340a;--accent-display:#c93f0b;--line:#1b1c193b;--gutter:6vw;--header:64px;color-scheme:light}
*{box-sizing:border-box}html{scroll-behavior:smooth;scroll-padding-top:var(--header)}body{margin:0;font-size:14px;line-height:1.65;background:var(--paper)}
button,a,input{-webkit-tap-highlight-color:transparent}button,input{font:inherit}button,a{touch-action:manipulation}a{color:inherit;text-decoration:none}button{color:inherit;background:none;border:0;cursor:pointer;padding:0}button:disabled{opacity:.45;cursor:progress}
button:focus-visible,a:focus-visible,input:focus-visible,canvas:focus-visible{outline:2px solid var(--accent);outline-offset:4px}[hidden]{display:none!important}
svg{width:18px;height:18px;fill:none;stroke:currentColor;stroke-width:1.6;stroke-linejoin:round;stroke-linecap:round;flex-shrink:0}::selection{background:var(--accent);color:#fff}
.skip{position:fixed;left:20px;top:-60px;z-index:100;background:var(--ink);color:#111210;padding:12px}.skip:focus{top:8px}

/* header */
.header{position:fixed;inset:0 0 auto;z-index:40;height:var(--header);display:flex;align-items:center;border-bottom:1px solid var(--line);background:#e2e3e0ed;backdrop-filter:blur(12px);padding:0 var(--gutter);gap:26px}
.wordmark{font-size:26px;font-weight:500;letter-spacing:-1.5px;line-height:1;display:inline-flex;align-items:center;min-height:44px}.brand-slash{color:var(--accent);font-size:32px;margin-left:5px;font-weight:400}
.model-name{font-size:12px;border-left:1px solid var(--line);padding-left:20px;letter-spacing:.05em}
.header nav{display:flex;gap:34px;align-items:center;margin-left:auto}.header nav a{min-height:44px;display:flex;align-items:center;font-size:12px;white-space:nowrap}.header nav a:hover{color:var(--accent-ink)}
.header-cta{display:flex;align-items:center;gap:18px;font-size:12px;margin-left:10px;min-height:44px;background:var(--ink);color:var(--paper);padding:0 18px;border-radius:2px;white-space:nowrap;transition:background-color .2s}.header-cta svg{width:16px}.header-cta:hover{background:var(--accent-ink);color:#fff}
.mobile-nav-host{display:none}
#mobile-nav-sheet{background:#e2e3e0;color:#1b1c19;font-family:Poppins,Arial,sans-serif}#mobile-nav-sheet a{color:inherit}

/* stage */
#render-stage{position:fixed;inset:0;z-index:0;background:var(--paper);transition:background-color .5s}
#product-canvas{position:absolute;inset:0;width:100%;height:100%;display:block;outline-offset:-6px}
#product-canvas.orbit-enabled{cursor:grab;touch-action:pan-y}#product-canvas.dragging{cursor:grabbing}
#studio-frame{position:absolute;left:0;top:0;width:0;height:0;opacity:0;transition:opacity .3s;pointer-events:none;outline:1px solid #1b1c1935;outline-offset:0}
body.is-studio #studio-frame{opacity:1}
#studio-frame.bg-transparent{background:conic-gradient(#d3d4d0 25%,#e2e3e0 0 50%,#d3d4d0 0 75%,#e2e3e0 0) 0 0/20px 20px}
#studio-frame.bg-light{background:#e2e3e0}#studio-frame.bg-dark{background:#171917;outline-color:#171917}
#loading{position:fixed;z-index:35;left:67%;top:50%;transform:translate(-50%,-50%);font-size:12px;display:flex;gap:12px;align-items:center}
#loading>span{width:16px;height:16px;border:1.5px solid #1b1c1928;border-top-color:var(--accent);border-radius:50%;animation:spin .7s linear infinite}@keyframes spin{to{transform:rotate(360deg)}}
#render-error{position:fixed;z-index:35;left:50%;top:50%;transform:translate(-50%,-50%);max-width:350px;padding:20px;background:var(--paper);border:1px solid var(--line);font-size:13px}

/* chapter rail */
.chapter-rail{position:fixed;right:1.2vw;top:50%;transform:translateY(-50%);z-index:30;display:flex;flex-direction:column;gap:4px;transition:opacity .25s}
.chapter-rail a{width:38px;height:44px;display:flex;align-items:center;justify-content:center;font-size:12px;position:relative;color:var(--muted);font-variant-numeric:tabular-nums}
.chapter-rail a:after{content:'';height:0;width:2px;background:var(--accent);position:absolute;right:-5px;transition:height .2s}
.chapter-rail a[aria-current=true]{color:var(--accent-ink)}.chapter-rail a[aria-current=true]:after{height:22px}
.chapter-rail.at-end{opacity:0;pointer-events:none}
body.is-dark .chapter-rail a{color:#c4c9bf}body.is-dark .chapter-rail a[aria-current=true]{color:#ff8a5c}

/* chapters */
main{position:relative;z-index:2;pointer-events:none}
.chapter{position:relative;height:135svh;min-height:860px}.finish-chapter{height:175svh}
.chapter-inner{position:sticky;top:var(--header);height:calc(100svh - var(--header));min-height:590px;padding:72px var(--gutter) 54px;overflow:hidden;pointer-events:none;display:grid;grid-template-columns:minmax(320px,35%) 1fr;grid-template-rows:auto 1fr;align-content:start}
.copy{grid-column:1;grid-row:1;max-width:470px;pointer-events:auto;position:relative;z-index:3}
.dock-col{grid-column:1;grid-row:2;align-self:start;pointer-events:auto;position:relative;z-index:3;max-width:380px;margin-top:6px}
.copy h1,.copy h2{font-size:clamp(54px,5vw,82px);line-height:1.07;font-weight:400;letter-spacing:-.06em;margin:0 0 28px;text-wrap:balance}
.copy h1{font-size:clamp(66px,6.2vw,104px);line-height:1;letter-spacing:-.062em;white-space:nowrap;margin-bottom:34px}
.hero .copy p{font-size:15px;line-height:1.8;max-width:34ch;margin-bottom:34px}
.copy h1 span,.copy h2>span{color:var(--accent-display)}
.chapter-caption{position:absolute;right:calc(var(--gutter) + 56px);bottom:20px;margin:0;font-size:11px;letter-spacing:.04em;color:var(--muted)}
.copy p{font-size:14px;line-height:1.85;max-width:36ch;color:var(--muted);margin:0 0 28px}.copy strong{font-weight:500;color:var(--ink)}
.button{display:inline-flex;align-items:center;justify-content:space-between;gap:30px;min-height:50px;padding:14px 20px;font-size:12px;font-weight:500;line-height:1.4;border-radius:2px;transition:background-color .2s,transform .2s,color .2s}
.primary{background:var(--ink);color:var(--paper)}.primary:hover{background:var(--accent-ink);color:#fff}.primary:active{transform:translateY(2px)}
.text-button{display:flex;align-items:center;gap:25px;min-height:44px;font-size:12px;padding:7px 0;color:var(--muted);transition:color .2s}.text-button:hover{color:var(--accent-ink)}
.hero{height:145svh;grid-template-columns:minmax(320px,46%) 1fr}.hero .copy{max-width:640px}
.dock-hero{grid-column:1;grid-row:2;align-self:start;pointer-events:auto;position:relative;z-index:3}.dock-hero .button{min-width:172px}
.hero-bottom .edition{display:none}
.hero .copy{padding-top:4px}
.make-chapter .copy h2{margin-bottom:22px}
.inside-chapter .copy h2,.controls-chapter .copy h2,.inspect-chapter .copy h2{margin-bottom:26px}
.chapter-caption{max-width:32ch;text-align:right;pointer-events:none;line-height:1.5}
.hero-bottom{position:absolute;bottom:32px;left:var(--gutter);display:flex;align-items:center;gap:70px;font-size:12px;pointer-events:auto;color:var(--muted)}
.hero-bottom>a{display:flex;gap:22px;align-items:center;min-height:44px}.hero-bottom>a:hover{color:var(--accent-ink)}.hero-bottom svg{height:15px;width:15px}

/* controls + materials tabs */
.feature-tabs{display:flex;flex-direction:column;border-top:1px solid var(--line);max-width:335px}
.feature-tabs button{min-height:54px;padding:14px 0;display:flex;justify-content:space-between;align-items:center;gap:12px;border-bottom:1px solid var(--line);color:var(--muted);font-size:13px;text-align:left;transition:color .2s,border-color .2s}
.feature-tabs button:hover{color:var(--ink)}.feature-tabs button[aria-selected=true]{color:var(--ink);border-bottom-color:var(--accent)}
.feature-tabs button svg{width:14px;height:14px;color:var(--muted)}.feature-tabs button[aria-selected=true] svg{color:var(--accent-ink);transform:rotate(45deg)}
.feature-tabs button small{font-size:11px;color:var(--muted);margin-left:auto}
.feature-description{max-width:335px;padding-top:18px}.feature-description p{font-size:13px;line-height:1.8;margin:0 0 8px;color:var(--muted)}.feature-description .text-button{color:var(--accent-ink)}
.material-tabs button{flex-wrap:wrap}.material-tabs button small{margin-left:0}
.material-tabs button{display:grid;grid-template-columns:1fr auto;}

/* inside chapter */
.inside-chapter{height:195svh}
.part-labels{position:absolute;left:var(--gutter);bottom:50px;display:flex;flex-direction:column;gap:2px;pointer-events:none;width:250px}
.part-labels [data-part]{display:flex;align-items:center;gap:16px;min-height:36px;font-size:11px;color:var(--muted);transition:color .3s}
.part-labels [data-part]>span{font-size:12px;color:var(--ink);transition:color .3s}.part-labels [data-part].active,.part-labels [data-part].active>span{color:var(--accent-ink)}
.dock-stage{position:absolute;pointer-events:auto;z-index:3}
.assembly{left:40vw;right:8vw;bottom:34px;max-width:560px;margin:0 auto;display:grid;gap:4px;background:#e2e3e0f2;padding:12px 16px 6px;border:1px solid var(--line);border-radius:2px}
.dock-head{display:flex;justify-content:space-between;font-size:12px}.dock-head label{font-weight:500}.dock-head output{font-variant-numeric:tabular-nums;color:var(--muted)}
.range-row{display:grid;grid-template-columns:auto 1fr auto;align-items:center;gap:14px;font-size:11px;color:var(--muted)}
input[type=range]{-webkit-appearance:none;appearance:none;width:100%;height:44px;background:transparent;margin:0;cursor:pointer;touch-action:pan-y}
input[type=range]::-webkit-slider-runnable-track{height:2px;background:var(--ink)}input[type=range]::-moz-range-track{height:2px;background:var(--ink)}
input[type=range]::-webkit-slider-thumb{-webkit-appearance:none;width:22px;height:22px;border-radius:50%;background:var(--paper);border:2px solid var(--ink);margin-top:-10px;transition:background-color .2s,border-color .2s}
input[type=range]::-moz-range-thumb{width:18px;height:18px;border-radius:50%;background:var(--paper);border:2px solid var(--ink)}
input[type=range]:hover::-webkit-slider-thumb,input[type=range]:active::-webkit-slider-thumb{background:var(--accent);border-color:var(--accent-ink)}
.assembly .text-button{justify-self:end;min-height:36px;padding:4px 0}

/* inspect chapter */
.viewer{position:absolute;left:0;right:0;bottom:0;height:0;pointer-events:none}
.viewer-toolbar{position:absolute;left:40vw;right:8vw;bottom:34px;margin:0 auto;width:max-content;max-width:calc(52vw - 8px);display:flex;align-items:center;gap:8px;background:#e2e3e0f2;border:1px solid var(--line);border-radius:2px;padding:4px;pointer-events:auto}
.seg{display:flex}.seg button,.tool{min-height:44px;min-width:44px;padding:0 15px;font-size:12px;border-radius:2px;display:inline-flex;align-items:center;justify-content:center;gap:8px;color:var(--ink);transition:background-color .2s,color .2s}
.seg button:hover,.tool:hover{background:#1b1c1910}.seg button[aria-pressed=true],.tool[aria-pressed=true]{background:var(--ink);color:var(--paper)}
.tools{display:flex;gap:2px;border-left:1px solid var(--line);padding-left:6px}.tool svg{width:16px;height:16px}
.hotspot-card{position:absolute;left:var(--gutter);bottom:36px;width:min(340px,30vw);background:#e2e3e0f2;border:1px solid var(--line);border-top:2px solid var(--accent);padding:16px 18px 6px;pointer-events:auto}
.hotspot-card h3{margin:0 0 6px;font-size:15px;font-weight:500;letter-spacing:-.01em}.hotspot-card p{margin:0 0 6px;font-size:13px;line-height:1.7;color:var(--muted)}
#hotspots{position:fixed;inset:0;z-index:6;pointer-events:none;opacity:1;transition:opacity .25s}#hotspots[data-state=hidden]{opacity:0;visibility:hidden;transition:opacity .2s,visibility 0s .2s}
.hotspot{position:absolute;left:0;top:0;width:44px;height:44px;margin:-22px 0 0 -22px;display:grid;place-items:center;pointer-events:auto;will-change:transform}
.hotspot[data-hidden=true]{visibility:hidden;pointer-events:none}
.hotspot:before{content:'';width:14px;height:14px;border-radius:50%;background:var(--paper);border:1.5px solid var(--ink);box-shadow:0 0 0 4px #e2e3e099;transition:background-color .2s,transform .2s,border-color .2s}
.hotspot:hover:before{transform:scale(1.25);background:var(--accent);border-color:var(--accent-ink)}
.hotspot[aria-pressed=true]:before{background:var(--accent);border-color:var(--accent-ink);transform:scale(1.25)}
.hotspot-label{position:absolute;left:30px;top:50%;transform:translateY(-50%);background:var(--ink);color:var(--paper);font-size:11px;line-height:1;padding:7px 10px;white-space:nowrap;border-radius:2px;display:none}
.hotspot[aria-pressed=true] .hotspot-label,.hotspot:hover .hotspot-label,.hotspot:focus-visible .hotspot-label{display:block}.hotspot.flip .hotspot-label{left:auto;right:30px}

/* finish chapter */
.finishes{display:flex;border:0;padding:0;margin:32px 0 28px;gap:27px}.finishes legend{font-size:12px;color:#c4c9bf;margin-bottom:19px;padding:0}
.finishes label{display:flex;flex-direction:column;align-items:center;gap:14px;font-size:11px;color:#c4c9bf;cursor:pointer;min-width:58px;position:relative}
.finishes input{position:absolute;opacity:0;width:44px;height:44px;top:-1px;left:50%;transform:translateX(-50%);margin:0;cursor:pointer}
.swatch{display:block;width:37px;height:37px;border-radius:50%;border:5px solid #171917;outline:1px solid #565d53;transition:transform .2s,outline-color .2s;pointer-events:none}
.chalk{background:#e5e2d9}.graphite{background:#3f4546}.signal{background:#ed5b2c}
.finishes input:checked+.swatch{outline-color:#efefe5;transform:scale(1.15)}.finishes input:focus-visible+.swatch{outline:2px solid var(--accent);outline-offset:3px}
.finishes label:has(input:checked){color:#eeeee8}
.finish-name{display:flex;justify-content:space-between;max-width:250px;border-top:1px solid #ffffff2d;padding-top:20px;color:#eeeee8;font-size:15px;margin:0}.finish-name>span+span{font-size:11px;color:#c4c9bf;font-variant-numeric:tabular-nums}

/* studio */
.studio-chapter{height:165svh}
.studio-dock{display:flex;flex-direction:column;gap:6px}
.studio-row{display:flex;align-items:center;gap:22px;flex-wrap:wrap}
.studio-finish{display:flex;gap:2px}.studio-finish button{width:44px;height:44px;display:grid;place-items:center}
.studio-finish .swatch{width:30px;height:30px;border:3px solid var(--paper);outline:1px solid #1b1c1966;transition:transform .2s,outline-color .2s}
.studio-finish button[aria-checked=true] .swatch{outline:2px solid var(--ink);transform:scale(1.12)}
.save-note{font-size:12px;line-height:1.6;color:var(--muted);margin:2px 0 0;min-height:20px}.save-note.is-error{color:#9b2c0b}.save-note.is-ok{color:var(--ink)}
.button.is-busy{pointer-events:none}.button.is-busy svg{animation:spin .8s linear infinite}
.shot-panel{display:grid;gap:4px;border-top:1px solid var(--line);padding-top:8px;margin-top:2px}
.shot-row{display:grid;grid-template-columns:66px 1fr;align-items:center;gap:8px;font-size:11px;color:var(--muted)}
.chips{display:flex;flex-wrap:wrap;gap:2px}.chips button{min-height:44px;min-width:44px;padding:0 11px;font-size:12px;border-radius:2px;color:var(--ink);border:1px solid transparent;transition:background-color .2s,color .2s}
.chips button:hover{background:#1b1c1910}.chips button[aria-pressed=true]{background:var(--ink);color:var(--paper)}
.views{position:absolute;left:40vw;right:8vw;bottom:22px;z-index:3;pointer-events:auto;display:grid;gap:6px}
.views-label{margin:0;font-size:12px;color:var(--muted);text-align:center}
.views-row{display:flex;gap:10px;justify-content:center;overflow-x:auto;padding:4px 2px;scrollbar-width:none}.views-row::-webkit-scrollbar{display:none}
.view-card{flex:0 0 auto;width:84px;display:grid;gap:4px;justify-items:center;font-size:11px;color:var(--muted);transition:color .2s}
.view-card .thumb{width:84px;height:68px;display:block;background:#d3d4d0;border:1px solid var(--line);overflow:hidden;transition:border-color .2s}
.view-card img{width:100%;height:100%;object-fit:contain;display:block}
.view-card:hover{color:var(--ink)}.view-card[aria-pressed=true]{color:var(--ink)}.view-card[aria-pressed=true] .thumb{border-color:var(--accent);box-shadow:0 0 0 1px var(--accent)}

/* footer */
footer{position:relative;z-index:4;background:var(--paper);padding:24px var(--gutter) 20px;border-top:1px solid var(--line)}
.footer-wordmark{font-size:33vw;line-height:.95;letter-spacing:-.07em;overflow:hidden;margin:0 -1vw;font-weight:500;display:block;white-space:nowrap;max-width:100%}.footer-wordmark span{color:var(--accent)}
footer>div{display:flex;align-items:center;gap:30px;border-top:1px solid var(--line);padding-top:15px;font-size:12px;color:var(--muted)}
footer>div a{min-height:44px;display:inline-flex;align-items:center}footer>div a:hover{color:var(--accent-ink)}footer .text-button{margin-left:auto;font-size:12px}#mobile-chapter{display:none}
#toast{position:fixed;z-index:80;bottom:24px;left:50%;transform:translate(-50%,15px);background:var(--ink);color:var(--paper);padding:13px 20px;border-radius:2px;font-size:12px;opacity:0;pointer-events:none;transition:transform .2s,opacity .2s;max-width:90vw;text-align:center}#toast.show{opacity:1;transform:translate(-50%,0)}

/* wide screens */
@media(min-width:1700px){.chapter-inner{padding-top:110px}.copy p{font-size:16px}.feature-tabs button{font-size:15px;min-height:60px}.feature-description p{font-size:14px}.dock-col{max-width:420px}.feature-tabs,.feature-description{max-width:380px}.part-labels{bottom:85px}.part-labels [data-part]>span{font-size:14px}}
/* narrow desktop / tablet */
@media(max-width:1000px) and (min-width:761px){.header{gap:18px}.header nav{gap:22px}.copy h2{font-size:54px}.copy h1{font-size:72px}.copy p{font-size:13px}.chapter-inner{grid-template-columns:minmax(300px,40%) 1fr}.assembly,.viewer-toolbar,.views{left:36vw}.viewer-toolbar{max-width:60vw}.hotspot-card{width:min(300px,34vw)}}
/* short screens: compact two-column layout (also phones in landscape) */
@media(max-height:760px) and (min-width:761px){.chapter-inner{padding-top:45px;min-height:540px}.copy h2{font-size:56px;margin-bottom:20px}.copy h1{font-size:78px}.copy p{font-size:13px;margin-bottom:20px}.feature-tabs button{min-height:46px}.feature-description{padding-top:12px}.part-labels{bottom:50px}.part-labels [data-part]{min-height:32px}.finishes{margin-top:22px}.studio-chapter .copy p{margin-bottom:6px}}
@media(max-height:520px){
 :root{--header:52px;--gutter:4vw}.chapter{min-height:0;height:170svh}.hero{height:180svh}.inside-chapter{height:230svh}.studio-chapter{height:200svh}
 .chapter-inner{min-height:0;padding:14px var(--gutter) 12px;grid-template-columns:minmax(230px,40%) 1fr;height:calc(100svh - var(--header))}
 .copy h1{font-size:clamp(34px,10vh,56px);margin-bottom:10px}.copy h2{font-size:clamp(28px,9vh,44px);margin-bottom:8px;line-height:1.05}.copy p{font-size:12px;line-height:1.55;margin-bottom:8px}
 .header{padding:0 var(--gutter)}.wordmark{font-size:22px;min-height:40px}.brand-slash{font-size:26px}.header nav{gap:18px}.header-cta{padding:0 12px}.chapter-rail{display:none}
 .hero-bottom{bottom:10px}.part-labels{display:none}.feature-tabs button{min-height:40px;padding:6px 0;font-size:12px}.feature-description{padding-top:6px}.feature-description p{font-size:11px;margin:0}
 .material-tabs button small{display:none}.finishes{margin:10px 0 6px;gap:16px}.finishes legend{margin-bottom:6px}.finish-name{padding-top:6px;font-size:13px}.swatch{width:30px;height:30px}
 .assembly,.viewer-toolbar,.views{left:42vw;right:5vw;bottom:8px}.viewer-toolbar{max-width:54vw}.views-label{display:none}.view-card{width:64px}.view-card .thumb{width:64px;height:48px}
 .hotspot-card{left:var(--gutter);bottom:10px;width:34vw;padding:8px 12px 2px}.hotspot-card p{font-size:11px;line-height:1.45}
 .studio-row{gap:8px}.save-note{font-size:11px}.shot-panel{gap:0}.shot-row{grid-template-columns:54px 1fr}.chips button{min-height:44px}
 .dock-col{margin-top:0}footer .footer-wordmark{font-size:22vw}
}

/* phones in portrait */
@media(max-width:760px) and (orientation:portrait){
 :root{--gutter:5.5vw;--header:58px}
 .header{gap:15px;backdrop-filter:none;padding-right:calc(var(--gutter) + 52px)}.wordmark{font-size:23px}.brand-slash{font-size:28px}.model-name{font-size:10px;padding-left:12px}.header nav{display:none}.header-cta{display:none}
 .mobile-nav-host{display:flex;position:fixed;top:0;right:var(--gutter);height:58px;z-index:60;align-items:center}
 .chapter-rail{display:none}.chapter{min-height:700px;height:118svh}
 .chapter-inner{display:block;padding:20px var(--gutter) 16px;height:calc(100svh - var(--header));min-height:640px}
 .copy{max-width:100%}.copy h1{font-size:clamp(46px,13.2vw,64px);line-height:1.03;margin-bottom:14px}.copy h2{font-size:clamp(36px,10.4vw,50px);line-height:1.06;margin-bottom:12px;letter-spacing:-.058em}
 .copy p{font-size:13px;line-height:1.7;margin-bottom:0;max-width:300px}
 .hero{height:124svh}.hero .copy p{font-size:13px;max-width:300px}.copy h1{margin-bottom:14px}.hero-bottom{left:var(--gutter);right:var(--gutter);bottom:18px;gap:12px;font-size:11px}.hero-bottom>a{gap:12px;min-height:44px}
 .dock-col,.dock-stage,.viewer,.dock-hero{position:absolute;left:var(--gutter);right:var(--gutter);bottom:20px;max-width:none;margin:0;transform:none;width:auto}
 .dock-hero{bottom:74px}.dock-hero .button{min-width:176px;min-height:50px}
 .feature-tabs{flex-direction:row;border-top:0;border-bottom:1px solid var(--line);max-width:none;width:100%}
 .feature-tabs button{font-size:12px;padding:8px 0;min-height:48px;flex:1;justify-content:flex-start;gap:8px;border-bottom:0}.feature-tabs button[aria-selected=true]{box-shadow:0 1px var(--accent)}.feature-tabs button svg{width:11px;height:11px}
 .material-tabs{flex-wrap:wrap}.material-tabs button{flex:1 1 50%;display:flex;flex-direction:column;align-items:flex-start;gap:0;min-height:48px;padding:6px 0}.material-tabs button small{font-size:10px}
 .feature-description{max-width:100%;padding-top:10px;display:flex;align-items:center;justify-content:space-between;gap:12px}.feature-description p{font-size:12px;max-width:250px;margin:0;line-height:1.55}.feature-description .text-button{white-space:nowrap;gap:12px}
 #material-panel{display:block}#material-panel p{max-width:none}
 .inside-chapter{height:165svh}.part-labels{display:none}
 .assembly{padding:8px 12px 2px}.range-row{gap:10px}.range-row span{font-size:10px}
 .viewer{display:flex;flex-direction:column;gap:8px;height:auto;pointer-events:none}.viewer-toolbar{position:static;width:100%;max-width:none;justify-content:space-between;margin:0}.seg{flex:1}.seg button{flex:1;padding:0 2px;min-width:44px}.tool span{display:none}.tool{padding:0;min-width:44px}.tools{padding-left:4px}
 .hotspot-card{position:static;width:auto;padding:12px 14px 2px;pointer-events:auto}.chapter-caption{display:none}.hotspot-card p{font-size:12px;line-height:1.55}
 .finishes{margin:0 0 10px;gap:22px}.finishes legend{font-size:11px;margin-bottom:10px}.finish-name{font-size:13px;max-width:none;padding-top:10px}
 .finish-chapter{height:165svh}
 .studio-chapter{height:135svh}.studio-dock{bottom:128px}.studio-row{gap:10px;flex-wrap:nowrap;justify-content:space-between}.studio-row .button{min-width:0;flex:1;max-width:190px;min-height:50px}
 .save-note{font-size:11px;margin:0}.shot-panel{position:absolute;left:0;right:0;bottom:calc(100% + 6px);background:#e2e3e0f7;border:1px solid var(--line);padding:6px 10px}.shot-row{grid-template-columns:62px 1fr}.chips button{padding:0 8px}
 .views{left:0;right:0;bottom:18px;padding:0 var(--gutter)}.views-label{text-align:left;font-size:11px}.views-row{justify-content:flex-start;scroll-snap-type:x proximity}.view-card{scroll-snap-align:start;width:72px}.view-card .thumb{width:72px;height:58px}
 .views{left:0;right:0}
 footer{padding:22px var(--gutter) 12px}.footer-wordmark{font-size:22vw;line-height:1.3;letter-spacing:-.075em}footer>div{font-size:11px;gap:12px;flex-wrap:wrap;padding-top:10px}footer .text-button{font-size:11px;min-height:44px}#mobile-chapter{display:inline;margin-left:auto;font-variant-numeric:tabular-nums}
 #loading{left:50%;top:55%;font-size:11px}#toast{font-size:11px}
 .hotspot-label{font-size:11px}
}
@media(max-width:760px) and (orientation:portrait) and (max-height:700px){.copy p{display:none}.hero .copy p{display:block}.copy h2{margin-bottom:6px}}
@media(max-width:370px) and (orientation:portrait){.copy h1{font-size:44px}.copy h2{font-size:35px}.header{gap:10px}.feature-tabs button{font-size:11px}.feature-tabs button svg{display:none}.seg button{font-size:11px}.view-card{width:64px}.view-card .thumb{width:64px;height:52px}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}*,*:before,*:after{transition:none!important;animation:none!important}}

/* charcoal studio tone: the same layout, restated through the colour variables */
body.theme-dark{--paper:#111210;--ink:#efeee8;--muted:#b7bbb0;--line:#ffffff2b;--accent-ink:#ff8e60;--accent-display:#f4642a;color-scheme:dark;color:var(--ink)}
.header,.copy h1,.copy h2,.copy p,.copy strong,.wordmark,.model-name,.header nav a,.hero-bottom,.hero-bottom a,.chapter-caption,.chapter-rail a,.feature-tabs button,.feature-description p,.part-labels [data-part],.part-labels [data-part]>span,.finishes legend,.finishes label,.finish-name,.save-note,.bottom-note span,.kit-list span,.view-options button,.quiet{transition:color .45s ease,border-color .45s ease,background-color .45s ease}
.header{background:color-mix(in srgb,var(--paper) 90%,transparent);backdrop-filter:blur(10px)}
.assembly,.viewer-toolbar,.hotspot-card{background:color-mix(in srgb,var(--paper) 94%,transparent)}
.hotspot:before{box-shadow:0 0 0 4px color-mix(in srgb,var(--paper) 60%,transparent)}
.assembly,.viewer-toolbar{backdrop-filter:blur(8px)}
body.theme-dark .seg button:hover,body.theme-dark .tool:hover,body.theme-dark .chips button:hover{background:#ffffff14}
body.theme-dark .view-card .thumb{background:#1c1d1b}
body.theme-dark .hero-bottom,body.theme-dark .hero-bottom a{color:#b4b8ae}
body.theme-dark .hero-bottom b{color:var(--accent-ink)}
body.theme-dark #mobile-nav-sheet{background:#111210;color:#efeee8}
body.theme-dark .swatch{border-color:#111210}
body.theme-dark #loading>span{border-color:#ffffff30;border-top-color:var(--accent)}
body.theme-dark .save-note.is-error{color:#ff9a72}
body.theme-dark .part-labels [data-part].active,body.theme-dark .part-labels [data-part].active>span{color:var(--accent-ink)}
body.theme-dark input[type=range]::-webkit-slider-runnable-track{background:#efeee8}body.theme-dark input[type=range]::-moz-range-track{background:#efeee8}
body.theme-dark .button.primary{background:#efeee8;color:#111210}
body.theme-dark .primary:hover,body.theme-dark .header-cta:hover{background:#f4642a;color:#111210}
body.theme-dark .finishes input:checked+.swatch{outline-color:#efefe5}
body.theme-dark ::selection{background:var(--accent);color:#111}
.copy h1{text-shadow:none}
/* controls chapter: room for click plates, wheel, then thumb buttons */
@media(min-width:761px) and (min-height:521px){.controls-chapter{height:190svh}}
body.theme-dark .shot-panel{background:#111210f7}

.sound-toggle{position:fixed;right:20px;bottom:20px;z-index:60;width:44px;height:44px;border-radius:50%;display:grid;place-items:center;background:rgba(17,18,16,.78);color:#efeee8;border:1px solid rgba(239,238,232,.22);cursor:pointer;transition:background-color .2s,border-color .2s}.sound-toggle:hover{border-color:var(--accent)}.sound-toggle[aria-pressed=true]{color:#a9aaa5}