:root{--bg:#101215;--ink:#edf0ef;--muted:#8b9397;--line:rgba(255,255,255,.14);--accent:#c53b3b;--panel:rgba(23,27,31,.94);font-family:Inter,"SF Pro Display",-apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei",sans-serif;color-scheme:dark}*{box-sizing:border-box}body{margin:0;background:var(--bg);color:var(--ink);overflow:hidden}button,input,a{-webkit-tap-highlight-color:transparent}button{font:inherit;color:inherit;border:0;background:none;cursor:pointer}button:focus-visible,a:focus-visible,input:focus-visible{outline:2px solid #d56b65;outline-offset:5px}a{color:inherit;text-decoration:none}.topbar{height:82px;position:absolute;z-index:5;inset:0 0 auto;display:flex;align-items:center;justify-content:space-between;padding:0 4.3%;border-bottom:1px solid var(--line)}.brand{display:flex;align-items:center;gap:24px;letter-spacing:.28em;font-weight:600;font-size:13px}.brand svg{width:67px;height:20px;stroke:currentColor;stroke-width:1.4;fill:none}.brand>span:last-child{border-left:1px solid var(--line);padding-left:25px}.top-center{font-size:10px;letter-spacing:.24em;color:#9da5a8;display:flex;align-items:center;gap:10px}.status-dot{display:block;width:5px;height:5px;background:#a3b1ad;border-radius:50%;box-shadow:0 0 15px #7eaaa899}.outline-button{display:flex;align-items:center;gap:30px;font-size:12px;letter-spacing:.08em;padding:11px 17px;border:1px solid var(--line);border-radius:3px}.outline-button:hover,.outline-button[aria-pressed=true]{background:rgba(255,255,255,.08)}.outline-button span{font-size:16px;color:#aab1b4}main{position:absolute;inset:82px 0 36px;overflow:hidden}#viewport{position:absolute;inset:0;background:radial-gradient(ellipse at 52% 55%,#2a2f32 0,transparent 55%)}#viewport canvas{display:block;width:100%;height:100%;touch-action:none}.intro{position:absolute;top:38px;left:4.3%;pointer-events:none}.eyebrow{font-size:9px;color:#9da4a8;letter-spacing:.25em;font-weight:500}.intro h1{font-size:clamp(24px,2.4vw,42px);letter-spacing:.06em;font-weight:400;margin:15px 0 12px}.intro h1 span{color:#d6574c}.intro-note{font-size:11px;letter-spacing:.12em;color:#7e898e;margin:0}.views{position:absolute;right:4.3%;top:41px;display:flex;gap:7px}.views button{font-size:11px;padding:8px 13px;border-bottom:1px solid transparent;color:#899398;transition:.2s}.views button.active{color:#fff;border-color:#c74b43}.views button:hover{color:#fff}.viewport-caption{position:absolute;bottom:132px;left:4.3%;font-size:9px;letter-spacing:.12em;color:#6f7a80;display:flex;gap:24px;pointer-events:none}.viewport-caption span:first-child{color:#a8b0b3}.dimensions{display:flex;gap:40px;position:absolute;right:4.3%;bottom:139px;pointer-events:none}.dimensions div{display:flex;flex-direction:column;gap:7px}.dimensions strong{font-size:22px;font-weight:300;letter-spacing:.12em}.dimensions small{font-size:8px;letter-spacing:.13em;color:#6f7b80}.control-dock{position:absolute;bottom:32px;left:50%;transform:translateX(-50%);display:flex;align-items:center;gap:26px;background:rgba(28,33,37,.82);border:1px solid rgba(255,255,255,.11);border-radius:5px;padding:19px 24px;backdrop-filter:blur(24px);min-width:645px;box-shadow:0 16px 50px #0003}.control-label{font-size:9px;letter-spacing:.12em;color:#8f999e}.paint-select{display:flex;align-items:center;gap:18px}.swatches{display:flex;gap:12px}.swatch{height:19px;width:19px;border-radius:50%;box-shadow:inset 0 0 0 1px #ffffff30;position:relative}.swatch.red{background:linear-gradient(135deg,#a53032,#4b1317)}.swatch.white{background:linear-gradient(135deg,#fff,#8e9294)}.swatch.gray{background:linear-gradient(135deg,#8d969d,#282f35)}.swatch.active:after{position:absolute;content:"";inset:-4px;border-radius:50%;border:1px solid #d0d5d7}.dock-divider{height:32px;width:1px;background:var(--line)}.door-control{min-width:155px}.door-control label,.structure-tools label{font-size:9px;color:#aeb6b9;display:flex;justify-content:space-between;gap:24px;margin-bottom:12px}.door-control output,.structure-tools output{color:#d1d7da;font-variant-numeric:tabular-nums}input[type=range]{display:block;width:100%;height:2px;margin:0;background:#4b545a;appearance:none;-webkit-appearance:none;cursor:pointer}input[type=range]::-webkit-slider-thumb{appearance:none;-webkit-appearance:none;width:7px;height:7px;border-radius:50%;background:#d7dddd;box-shadow:0 0 0 3px #d7dddd12}input[type=range]::-moz-range-thumb{border:0;width:7px;height:7px;border-radius:50%;background:#d7dddd}.toggle{display:flex;align-items:center;gap:8px;font-size:10px;color:#8e989e;white-space:nowrap;padding:8px 0}.toggle i{display:block;width:9px;height:9px;border:1px solid #65727a;border-radius:2px}.toggle[aria-pressed=true]{color:#e4e9e9}.toggle[aria-pressed=true] i{background:#b9c6ca;border-color:#b9c6ca;box-shadow:inset 0 0 0 2px #2b3338}.reset{font-size:10px;color:#849198;border-left:1px solid var(--line);padding-left:20px}.layers{width:340px;position:absolute;right:0;top:0;bottom:0;background:var(--panel);backdrop-filter:blur(30px);border-left:1px solid var(--line);z-index:6;padding:29px 26px;display:flex;flex-direction:column;transform:translateX(101%);transition:transform .3s ease;box-shadow:-20px 0 60px #0004}.layers.open{transform:none}.drawer-header{display:flex;align-items:flex-start;justify-content:space-between;gap:12px}.drawer-header h2{font-size:18px;font-weight:400;letter-spacing:.02em;margin:13px 0 20px}.drawer-header>button,#clear-selection{font-size:23px;color:#97a2a7;padding:0 0 6px 12px}.search{display:block;margin-top:4px}.search input{width:100%;border:1px solid var(--line);background:#ffffff03;border-radius:3px;font:inherit;color:var(--ink);padding:11px;font-size:11px;outline:none}.search input::placeholder{color:#718087}.tree-toolbar{display:flex;justify-content:space-between;margin:22px 0 9px;font-size:9px;letter-spacing:.06em;color:#728087}.tree-toolbar button{font-size:9px;color:#c2cace}.parts-tree{overflow:auto;min-height:60px;flex:1;scrollbar-width:thin;scrollbar-color:#48555b transparent}.part-group{border-bottom:1px solid #ffffff0b}.group-heading{display:flex;align-items:center;gap:9px;padding:14px 0;cursor:pointer}.group-heading input{appearance:none;width:11px;height:11px;border:1px solid #68777e;border-radius:2px;cursor:pointer;margin:0}.group-heading input:checked{background:#b1bdc0;box-shadow:inset 0 0 0 2px #273239}.group-label{flex:1;font-size:11px;color:#c8cfd1}.group-count{font-size:9px;color:#647780;font-variant-numeric:tabular-nums}.group-arrow{font-size:12px;color:#6e8089;margin-left:7px}.group-items{display:none;padding:1px 0 10px}.part-group.open .group-items{display:block}.part-item{font-size:10px;color:#81939c;padding:7px 5px 7px 21px;text-align:left;display:block;width:100%;line-height:1.6;border-radius:2px}.part-item:hover{background:#ffffff05;color:#d7dfe1}.part-item.selected{background:#b9c5c00b;color:#e6ebec}.part-item.is-hidden{opacity:.35}.structure-tools{padding:13px 0 22px;border-bottom:1px solid var(--line)}.structure-tools .toggle{margin-bottom:12px}.file-links{padding-top:13px}.file-links a{display:flex;justify-content:space-between;font-size:9px;color:#a3b0b6;padding:10px 0}.file-links span{font-size:8px;color:#62757f}.scope-note{font-size:8px;line-height:1.9;color:#5c6f79;margin:12px 0 0}.part-detail{position:absolute;left:4.3%;bottom:175px;width:260px;border-left:1px solid #b2463f;background:#161c20ee;backdrop-filter:blur(20px);padding:17px 20px;z-index:4;box-shadow:0 16px 50px #0003}.part-detail[hidden]{display:none}.part-detail>div:first-child{display:flex;align-items:center;justify-content:space-between}.part-detail h2{font-size:17px;font-weight:400;line-height:1.5;margin:4px 0 9px}.part-detail p{font-size:10px;line-height:1.8;color:#81949e;margin:0 0 15px}.part-actions{display:flex;gap:8px}.part-actions button{font-size:9px;border:1px solid var(--line);border-radius:2px;padding:7px 12px;color:#b9c6cc}.part-actions button:hover{background:#ffffff09}.loading{position:absolute;inset:0;display:flex;align-items:center;justify-content:center;flex-direction:column;gap:18px;background:var(--bg);z-index:8;font-size:11px;letter-spacing:.1em;color:#8b969d;transition:opacity .4s}.loading.done{opacity:0;pointer-events:none}.loader-line{display:block;height:1px;width:150px;background:#354149;overflow:hidden;position:relative}.loader-line:after{content:"";position:absolute;inset:0;background:#aab6be;transform:translateX(-100%);animation:load 1.4s infinite}@keyframes load{to{transform:translateX(100%)}}.toast{position:absolute;z-index:10;left:50%;bottom:130px;transform:translate(-50%,10px);opacity:0;pointer-events:none;background:#d1d8d9;color:#1a242a;font-size:11px;padding:11px 18px;border-radius:3px;transition:.2s}.toast.show{opacity:1;transform:translate(-50%,0)}footer{height:36px;position:absolute;inset:auto 0 0;display:flex;align-items:center;justify-content:space-between;padding:0 4.3%;border-top:1px solid #ffffff0b;font-size:8px;letter-spacing:.13em;color:#4e5f68}footer span:nth-child(2){color:#5c707b}.layers-open .views{right:365px}.layers-open .dimensions{right:365px}.layers-open .part-detail{left:4.3%}@media(max-width:1100px){.top-center{display:none}.dimensions{gap:25px}.dimensions strong{font-size:18px}.viewport-caption{flex-direction:column;gap:7px;bottom:138px}.views{gap:0}.views button{padding:8px 9px}.intro h1{font-size:28px}.control-dock{gap:20px}.layers-open .dimensions,.layers-open .views{opacity:0;pointer-events:none}}@media(max-width:700px){.topbar{height:65px;padding:0 22px}.brand{gap:14px}.brand svg{width:50px}.brand>span:last-child{padding-left:14px;font-size:10px}.outline-button{font-size:10px;gap:15px;padding:8px 11px}.outline-button span{font-size:12px}main{inset:65px 0 30px}.intro{left:22px;top:27px}.intro .eyebrow{font-size:8px}.intro h1{font-size:24px;letter-spacing:.03em;margin-top:13px}.intro-note{font-size:9px}.views{top:132px;right:auto;left:18px;gap:4px}.views button{font-size:10px;padding:8px 10px}.dimensions{bottom:153px;right:22px;gap:21px}.dimensions strong{font-size:15px}.dimensions small{font-size:7px}.viewport-caption{left:22px;bottom:153px}.viewport-caption span:nth-child(2){display:none}.control-dock{bottom:24px;min-width:0;width:calc(100% - 30px);padding:17px;gap:16px;display:grid;grid-template-columns:1fr 1fr auto;row-gap:16px}.paint-select{gap:13px}.control-label{font-size:8px}.swatches{gap:10px}.swatch{width:17px;height:17px}.dock-divider{display:none}.door-control{grid-column:2/4;min-width:0}.toggle{font-size:9px}.control-dock>.toggle:nth-of-type(2){justify-self:center}.reset{padding-left:17px;justify-self:end}.control-dock>.toggle{grid-row:2}.control-dock>.reset{grid-row:2}.part-detail{left:15px;bottom:210px;width:calc(100% - 30px);padding:13px 17px}.part-detail h2{font-size:15px}.part-detail p{margin-bottom:11px}.part-detail .part-actions{position:absolute;right:17px;bottom:17px}.part-detail .part-actions button{padding:6px 9px}.part-detail p{max-width:calc(100% - 140px)}.layers{width:calc(100% - 28px);padding:24px}.layers-open .dimensions{display:none}.layers-open .views{left:18px;right:auto}.toast{bottom:210px;white-space:nowrap}footer{height:30px;padding:0 22px;font-size:6px}footer span:nth-child(2){display:none}.dimensions div:nth-child(2){display:none}}@media(prefers-reduced-motion:reduce){*{animation:none!important;transition:none!important}}

.credits{font-size:8px;color:#71858f;line-height:1.9;margin:14px 0 0}.credits summary{cursor:pointer;color:#96a6ae}.credits p{margin:9px 0 0}.credits a{color:#aab9c0;text-decoration:underline;text-underline-offset:2px}

.wordmark{font-size:12px;font-weight:400;letter-spacing:.38em;color:#c4cdd1}

.interior-view .intro,.interior-view .dimensions,.interior-view .viewport-caption{opacity:0;pointer-events:none}

@media(min-width:701px){.layers-open #viewport{right:340px}.layers-open .control-dock{left:calc((100% - 340px)/2)}}

[hidden]{display:none!important}


/* 爆炸图作为主入口，移动端为三维画面保留独立的操作空间。 */
.header-actions{display:flex;align-items:center;gap:12px}.explode-button{border-color:#ad4b46;color:#f1d8d5;min-width:88px;justify-content:center}.explode-button[aria-pressed=true]{background:#77363166;border-color:#ce7067}.explode-button span{font-size:12px;color:inherit}
#viewport{bottom:140px}.explode-controls{position:absolute;top:100px;right:4.3%;width:245px;padding:16px 18px 12px;background:#1c2329bf;border:1px solid var(--line);border-radius:5px;backdrop-filter:blur(20px)}.explode-controls label{display:flex;justify-content:space-between;font-size:11px;color:#c6d0d5;margin-bottom:4px}.explode-controls output{font-variant-numeric:tabular-nums;color:#fff}.explode-controls p{font-size:9px;letter-spacing:.05em;color:#8d9aa2;margin:6px 0 0}.exploded-view .dimensions,.exploded-view .viewport-caption{opacity:0;pointer-events:none}.layers-open .explode-controls{right:365px}.door-control:has(input:disabled){opacity:.38}input[type=range]{height:24px;background:linear-gradient(#4b545a,#4b545a) center/100% 3px no-repeat}input[type=range]:disabled{cursor:default}.door-control label{margin-bottom:2px}.control-dock{padding-top:14px;padding-bottom:14px}.structure-tools .toggle{margin:0}.structure-tools{padding-bottom:13px}
@media(max-width:700px){
 .topbar{padding:0 15px}.brand{gap:10px}.brand>span:last-child{padding-left:10px}.header-actions{gap:7px}.outline-button{min-height:44px;padding:9px 10px}.explode-button{min-width:74px}.explode-button span{font-size:11px}.outline-button span{font-size:11px}
 #viewport{top:165px;bottom:170px}.exploded-view #viewport{top:250px}.explode-controls{top:179px;left:18px;right:18px;width:auto;padding:12px 16px 9px}.explode-controls label{font-size:12px}.explode-controls p{margin-top:3px}.layers-open .explode-controls{right:18px}
 .views{top:120px;left:15px;right:15px;justify-content:space-between;gap:0}.views button{min-height:44px;font-size:11px;padding:8px 12px}.intro{left:18px;top:20px}.intro-note{font-size:9px}.dimensions{display:none}.viewport-caption{display:none}
 .control-dock{padding:12px 15px;column-gap:14px;row-gap:7px;bottom:20px}.control-dock>.toggle,.control-dock>.reset{min-height:39px}.door-control label{font-size:10px}.swatch{width:24px;height:24px}.swatches{gap:9px}.paint-select{gap:11px}.control-label{font-size:9px}.toggle{font-size:11px}.reset{font-size:11px}input[type=range]::-webkit-slider-thumb{width:17px;height:17px}input[type=range]::-moz-range-thumb{width:17px;height:17px}
 .part-detail{bottom:166px}.part-actions button{min-height:35px}.layers{padding:20px}.drawer-header>button,#clear-selection{min-width:40px;min-height:40px}.part-item{min-height:40px;font-size:12px;padding-top:10px;padding-bottom:10px}.group-heading{min-height:46px}.group-label{font-size:12px}.toast{bottom:170px;font-size:10px;max-width:calc(100% - 30px);white-space:normal;text-align:center}
}

.outline-button:disabled{opacity:.4;cursor:wait}
@media(max-width:700px){
 .exploded-view .intro{top:15px}.exploded-view .intro .eyebrow,.exploded-view .intro-note{display:none}.exploded-view .intro h1{font-size:20px;margin:0}
 .exploded-view .views{top:45px}.exploded-view .explode-controls{top:98px}.exploded-view #viewport{top:174px;bottom:154px}
}

/* 配色与车牌集中在可关闭面板，主工具栏保留当前车色。 */
.appearance-toggle{padding:0;text-align:left;gap:11px;min-height:44px;min-width:140px}.current-paint-swatch{display:block;width:25px;height:25px;border-radius:50%;background:#434c53;box-shadow:inset 0 1px 3px #ffffff80,0 0 0 1px #ffffff30;flex:none}.appearance-toggle-copy{display:flex;flex-direction:column;gap:5px}.appearance-toggle-copy strong{font-size:11px;font-weight:500;letter-spacing:.04em}.appearance-toggle-copy small{font-size:9px;color:#9aa7ae;letter-spacing:.08em}.appearance-arrow{color:#a3afb6;font-size:15px;margin-left:8px}.appearance-toggle:hover .appearance-toggle-copy small,.appearance-toggle[aria-expanded=true] .appearance-toggle-copy small{color:#edf0ef}
.appearance-panel{position:absolute;z-index:7;left:4.3%;bottom:140px;width:350px;max-height:calc(100% - 165px);display:flex;flex-direction:column;background:#1a2026f5;border:1px solid #ffffff20;border-radius:7px;box-shadow:0 20px 70px #0005;backdrop-filter:blur(24px)}.appearance-heading{display:flex;align-items:flex-start;justify-content:space-between;padding:18px 18px 10px;flex:none;border-bottom:1px solid #ffffff0c}.appearance-heading h2{font-size:17px;font-weight:500;letter-spacing:.05em;margin:0 0 6px}.appearance-heading p{font-size:10px;color:#91a0aa;margin:0}.appearance-close{font-size:25px;color:#aab7be;width:40px;height:40px;margin:-9px -9px 0 0;display:flex;align-items:center;justify-content:center;flex:none}.appearance-close:hover{color:#fff}.appearance-content{padding:15px 18px 18px;overflow-y:auto;min-height:0;scrollbar-width:thin;scrollbar-color:#4b5963 transparent}.paint-options h3{font-size:11px;font-weight:500;color:#aebbc2;margin:0 0 10px}.paint-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:7px}.paint-option{display:flex;align-items:center;gap:9px;min-height:46px;padding:9px 10px;border:1px solid #ffffff13;background:#ffffff03;border-radius:4px;text-align:left;transition:background .15s,border-color .15s}.paint-option i{display:block;height:21px;width:21px;border-radius:50%;background:var(--paint);box-shadow:inset 0 2px 4px #ffffff60,0 0 0 1px #ffffff28;flex:none}.paint-option span{font-size:10px;color:#9eafb9;white-space:nowrap}.paint-option:hover{background:#ffffff09;border-color:#ffffff30}.paint-option.active{border-color:#b66359;background:#a651481a}.paint-option.active span{color:#fff}.appearance-fields{display:grid;grid-template-columns:1fr 1fr;gap:15px 12px;margin-top:18px}.appearance-fields label{display:flex;flex-direction:column;gap:8px;min-width:0}.appearance-fields label>span{font-size:11px;color:#aebbc2}.appearance-fields select,.appearance-fields input{border:1px solid #ffffff24;border-radius:4px;background:#11181e;color:#e3e9ed;font:inherit;font-size:12px;min-height:42px;padding:9px 10px;width:100%;outline:none}.appearance-fields select{cursor:pointer}.appearance-fields select:focus,.appearance-fields input:focus{border-color:#c77b70;box-shadow:0 0 0 2px #bd64551a}.appearance-fields .plate-text-field{grid-column:1/-1}.plate-text-field input{font-size:17px;letter-spacing:.11em;font-variant-numeric:tabular-nums}.plate-text-field small{font-size:9px;color:#8295a0;line-height:1.6}.appearance-open .viewport-caption{opacity:0}
@media(max-width:700px){
 .appearance-toggle{min-width:0;gap:8px}.current-paint-swatch{width:25px;height:25px}.appearance-toggle-copy strong{font-size:10px}.appearance-toggle-copy small{font-size:9px}.appearance-arrow{margin-left:2px;font-size:13px}
 .appearance-panel{left:15px;right:15px;bottom:16px;width:auto;max-height:48%;border-radius:7px}.appearance-heading{padding:13px 15px 9px}.appearance-heading h2{font-size:16px;margin-bottom:4px}.appearance-heading p{font-size:9px}.appearance-close{width:40px;height:40px;margin:-7px -6px 0 0}.appearance-content{padding:11px 15px 14px}.paint-options h3{font-size:10px;margin-bottom:8px}.paint-grid{gap:6px}.paint-option{min-height:42px;padding:8px 10px;gap:8px}.paint-option i{width:20px;height:20px}.paint-option span{font-size:10px}.appearance-fields{gap:12px 10px;margin-top:14px}.appearance-fields label{gap:6px}.appearance-fields label>span{font-size:10px}.appearance-fields input,.appearance-fields select{min-height:44px;font-size:12px}.plate-text-field input{font-size:17px}.plate-text-field small{font-size:9px}
 .appearance-open .control-dock{visibility:hidden;pointer-events:none}.appearance-open .intro{top:13px}.appearance-open .intro .eyebrow,.appearance-open .intro-note{display:none}.appearance-open .intro h1{font-size:20px;margin:0}.appearance-open .views{top:43px}.appearance-open #viewport{top:87px;bottom:calc(48% + 32px)}.appearance-open .explode-controls{display:none}.appearance-open .part-detail{display:none}
}