:root{
  --bg:#0c0d10; --panel:#15171c; --panel-2:#1b1e24; --line:#272b33; --text:#eceef2; --muted:#9aa1ad;
  --accent:#4f8cff; --accent-ink:#06142e; --ok:#3ccf8e; --warn:#f2b84b; --bad:#ff6b6b;
  --r:10px; --font:"Inter",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
}
*{box-sizing:border-box}
html{color-scheme:dark}
body{margin:0;background:var(--bg);color:var(--text);font:15px/1.55 var(--font);-webkit-font-smoothing:antialiased}
a{color:var(--accent)} a:hover{text-decoration:none}
button,input,textarea{font:inherit;color:inherit}
:focus-visible{outline:2px solid var(--accent);outline-offset:2px}
h1,h2,h3{line-height:1.2;margin:0 0 .5em;letter-spacing:-.01em}
code{background:var(--panel-2);padding:1px 5px;border-radius:4px}

header.site{display:flex;align-items:center;justify-content:space-between;gap:16px;padding:14px 24px;border-bottom:1px solid var(--line)}
.brand{display:flex;align-items:center;gap:10px;color:var(--text);text-decoration:none;font-weight:700;font-size:18px}
.brand .mark{width:28px;height:28px}
header nav{display:flex;gap:4px;flex-wrap:wrap}
header nav a{color:var(--muted);text-decoration:none;padding:6px 10px;border-radius:6px}
header nav a:hover,header nav a[aria-current]{color:var(--text);background:var(--panel)}

.intro{max-width:1440px;margin:0 auto;padding:28px 24px 8px}
.intro h1{font-size:clamp(26px,3.4vw,40px);font-weight:800}
.intro p{color:var(--muted);max-width:68ch;margin:0}

.studio{max-width:1440px;margin:0 auto;padding:16px 24px 40px;display:grid;grid-template-columns:minmax(0,1fr) 400px;gap:16px;align-items:start}
.garage{position:relative;background:radial-gradient(120% 90% at 50% 30%,#1a1d24 0%,#0e0f13 70%);border:1px solid var(--line);border-radius:var(--r);overflow:hidden}
.stage{height:min(70vh,640px);min-height:380px;cursor:grab}
.stage:active{cursor:grabbing}
.stage canvas{display:block}
.stage-bar{display:flex;justify-content:space-between;align-items:center;gap:12px;padding:10px 14px;border-top:1px solid var(--line);background:rgba(12,13,16,.6)}
.car-name{font-weight:600}
.view-tools{display:flex;gap:6px;flex-wrap:wrap}
.view-tools button,.chips button{background:var(--panel-2);border:1px solid var(--line);border-radius:6px;padding:6px 10px;cursor:pointer;color:var(--muted)}
.view-tools button[aria-pressed=true],.chips button[aria-pressed=true]{color:var(--text);border-color:var(--accent);background:#14223f}
.flat{position:absolute;inset:0 0 50px 0;width:100%;height:calc(100% - 50px);object-fit:contain;background:#0e0f13}
.loading{position:absolute;left:50%;top:45%;transform:translate(-50%,-50%);color:var(--muted);margin:0}

.panel{background:var(--panel);border:1px solid var(--line);border-radius:var(--r);padding:16px;position:sticky;top:12px}
.steps{list-style:none;display:grid;grid-template-columns:repeat(3,1fr);gap:4px;padding:4px;margin:0 0 16px;background:var(--bg);border-radius:8px}
.steps button{width:100%;border:0;background:transparent;padding:8px 4px;border-radius:6px;cursor:pointer;color:var(--muted);font-weight:600}
.steps button[aria-selected=true]{background:var(--panel-2);color:var(--text)}
.step h2{font-size:18px}
.step h3{font-size:14px;color:var(--muted);font-weight:600;margin-top:16px}

.models{display:grid;grid-template-columns:repeat(3,1fr);gap:8px}
.models button{display:flex;flex-direction:column;align-items:center;gap:4px;padding:10px 6px;background:var(--panel-2);border:1px solid var(--line);border-radius:8px;cursor:pointer}
.models button img{width:100%;height:52px;object-fit:contain}
.models button span{font-weight:600;font-size:14px}
.models button small{color:var(--muted);font-size:12px}
.models button[aria-pressed=true]{border-color:var(--accent);background:#14223f}
.variants{display:flex;flex-direction:column;gap:6px}
.variants button{display:flex;justify-content:space-between;align-items:center;text-align:left;padding:9px 12px;background:var(--panel-2);border:1px solid var(--line);border-radius:8px;cursor:pointer}
.variants button small{color:var(--muted)}
.variants button[aria-pressed=true]{border-color:var(--accent)}
.variants button .soon{color:var(--warn);font-size:12px}

.seg{display:grid;grid-template-columns:repeat(4,1fr);gap:4px;margin-bottom:12px}
.seg button{border:1px solid var(--line);background:var(--panel-2);border-radius:6px;padding:7px 4px;cursor:pointer;color:var(--muted)}
.seg button[aria-selected=true]{color:var(--text);border-color:var(--accent)}
.chips{display:flex;flex-wrap:wrap;gap:6px;margin:0 0 10px}
.pattern-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:6px;max-height:300px;overflow:auto;padding-right:2px}
.pattern-grid button{aspect-ratio:1;border:2px solid transparent;border-radius:6px;padding:0;overflow:hidden;cursor:pointer;background:var(--panel-2)}
.pattern-grid button img{width:100%;height:100%;object-fit:cover;display:block}
.pattern-grid button[aria-pressed=true]{border-color:var(--accent)}
.slider{display:flex;align-items:center;gap:10px;margin-top:10px;color:var(--muted);font-size:14px}
.slider input{flex:1;accent-color:var(--accent)}
.color-row{display:flex;gap:12px;margin-bottom:10px}
.color-row label{display:flex;align-items:center;gap:8px;color:var(--muted);font-size:14px}
.color-row input{width:44px;height:32px;border:1px solid var(--line);border-radius:6px;background:none;padding:0}
.swatches{display:grid;grid-template-columns:repeat(8,1fr);gap:6px}
.swatches button{aspect-ratio:1;border-radius:50%;border:1px solid var(--line);cursor:pointer}
.drop{display:flex;flex-direction:column;gap:4px;align-items:center;text-align:center;padding:26px 14px;border:1.5px dashed var(--line);border-radius:8px;cursor:pointer;margin-bottom:10px}
.drop span{color:var(--muted);font-size:13px}
.drop.over{border-color:var(--accent)}
.prompt{display:flex;flex-direction:column;gap:6px;color:var(--muted);font-size:14px}
.prompt textarea{background:var(--panel-2);border:1px solid var(--line);border-radius:8px;padding:10px;resize:vertical}
.hint{color:var(--muted);font-size:13px;margin:10px 0 0}
.primary{display:block;width:100%;margin-top:14px;padding:11px;border:0;border-radius:8px;background:var(--accent);color:var(--accent-ink);font-weight:700;cursor:pointer}
.primary:disabled{opacity:.5;cursor:not-allowed}
.fname{display:flex;flex-direction:column;gap:6px;color:var(--muted);font-size:14px}
.fname input{background:var(--panel-2);border:1px solid var(--line);border-radius:8px;padding:9px 10px}
.checks{list-style:none;padding:0;margin:12px 0 0;display:flex;flex-direction:column;gap:6px;font-size:14px}
.checks li::before{content:"";display:inline-block;width:8px;height:8px;border-radius:50%;margin-right:8px;background:var(--muted)}
.checks li.ok::before{background:var(--ok)} .checks li.fix::before{background:var(--warn)}
.install{padding-left:18px;color:var(--muted);font-size:14px} .install li{margin-bottom:6px} .install b{color:var(--text)}

.explain,.faq{max-width:1100px;margin:0 auto;padding:32px 24px}
.explain h2,.faq h2{font-size:24px}
.cols{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.cols h3{font-size:16px} .cols p{color:var(--muted);margin:0}
.faq details{border-bottom:1px solid var(--line);padding:12px 0}
.faq summary{cursor:pointer;font-weight:600}
.faq p{color:var(--muted);margin:8px 0 0;max-width:72ch}
footer.site{border-top:1px solid var(--line);padding:20px 24px;color:var(--muted);font-size:13px;text-align:center}
footer.site p{margin:4px auto;max-width:90ch}
footer.site a{color:var(--muted);margin:0 4px}

@media (max-width:980px){
  .studio{grid-template-columns:1fr}
  .panel{position:static}
  .stage{height:56vh;min-height:300px}
  .cols{grid-template-columns:1fr}
}
@media (max-width:520px){
  header.site{padding:12px 16px}
  .intro,.studio{padding-left:16px;padding-right:16px}
  .pattern-grid{grid-template-columns:repeat(3,1fr)}
  .view-tools button{padding:5px 8px;font-size:13px}
}
@media (prefers-reduced-motion:reduce){*{transition:none!important;animation:none!important}}
.models button[aria-pressed=true] small,.view-tools button[aria-pressed=true],.chips button[aria-pressed=true]{color:#dbe5fb}
p,li{text-wrap:pretty}