:root{color-scheme:dark;--background:#0b0c0e;--panel:#131416;--paper:#eae8e3;--muted:#9b9da3;--line:#2c2d31;--orange:#ff7849;--font:"Segoe UI","Microsoft YaHei",sans-serif}
*{box-sizing:border-box}
[hidden]{display:none!important}
html,body{margin:0;min-height:100%;background:var(--background);color:var(--paper);font-family:var(--font);-webkit-font-smoothing:antialiased}
body{overflow:hidden}
button,input{font:inherit}
button,a,label{ -webkit-tap-highlight-color:transparent}
button{cursor:pointer}
button:disabled{cursor:default;opacity:.4}
button,a,[role=button],input{outline-offset:4px}
:focus-visible{outline:2px solid var(--orange)}
button:active:not(:disabled){transform:translateY(1px)}
a{color:inherit;text-decoration:none}
.topbar{height:80px;padding:0 34px;display:flex;align-items:center;border-bottom:1px solid var(--line);gap:40px}
.wordmark{font-size:25px;font-weight:650;letter-spacing:-1.1px;display:flex;align-items:center;gap:13px;flex-shrink:0}
.wordmark span{font-size:10px;letter-spacing:2px;font-weight:500;border-left:1px solid #4a4b50;padding-left:13px;line-height:18px}
.top-note{font-size:13px;color:var(--muted)}
.top-actions{margin-left:auto;display:flex;align-items:center;gap:22px}
.quiet-button,.text-button{border:0;background:none;padding:0;color:var(--muted);white-space:nowrap;font-size:12px}
.quiet-button:hover,.text-button:hover{color:var(--paper)}
.primary-button,.secondary-button{border:1px solid var(--line);padding:11px 18px;font-size:12px;white-space:nowrap;min-height:40px;background:transparent;color:var(--paper)}
.primary-button{background:var(--orange);border-color:var(--orange);color:#17100c;font-weight:650;display:flex;gap:24px;align-items:center}
.primary-button:hover:not(:disabled){background:#ff946e;border-color:#ff946e}
.secondary-button:hover{background:#24262b;border-color:#50525a}
.workspace{display:grid;grid-template-columns:330px minmax(0,1fr);height:calc(100dvh - 80px)}
.sidebar{background:var(--panel);border-right:1px solid var(--line);padding:29px 25px;overflow-y:auto;scrollbar-width:thin;scrollbar-color:#45464d transparent}
h1,h2,p{margin:0}
h1{font-size:18px;letter-spacing:-.4px;font-weight:500;line-height:1.5}
.section-intro{font-size:12px;color:var(--muted);margin-top:7px;line-height:1.7}
.upload-zone{display:flex;flex-direction:column;align-items:center;justify-content:center;gap:10px;border:1px dashed #50525b;background:#191a1e;min-height:133px;margin-top:23px;cursor:pointer;transition:border-color .18s,background .18s}
.upload-zone:hover,.upload-zone.drag-over{border-color:var(--orange);background:#201b18}
.upload-symbol{font-size:24px;font-weight:300;line-height:1;color:var(--orange)}
.upload-zone strong{font-size:12px;font-weight:500}
.upload-zone>span:last-child{font-size:10px;color:var(--muted)}
.asset-info{display:flex;gap:12px;margin:16px 0 4px;align-items:center}
.asset-info img{width:34px;height:44px;object-fit:cover;border:1px solid var(--line)}
.asset-info div{min-width:0;display:flex;flex-direction:column;gap:5px}
.asset-info strong{font-size:11px;font-weight:400;overflow:hidden;white-space:nowrap;text-overflow:ellipsis}
.asset-info span{font-size:10px;color:var(--muted);font-variant-numeric:tabular-nums}
.field-label{display:block;font-size:11px;color:var(--muted);margin:22px 0 9px}
.text-input{width:100%;border:1px solid var(--line);background:#101113;color:var(--paper);height:38px;padding:0 11px;border-radius:0;font-size:12px}
.text-input:focus{border-color:#72747a;outline:1px solid #72747a;outline-offset:0}
.card-format{margin-top:10px;font-size:10px}
.frame-section,.back-section,.model-section,.layout-section,.background-depth-section,.custom-effects-section,.cutout-section,.effects-section,.layers-section{margin-top:28px;padding-top:24px;border-top:1px solid var(--line)}
.frame-section .section-heading{margin-bottom:14px}
.frame-choices{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:8px}
.frame-option{position:relative;display:flex;flex-direction:column;align-items:center;gap:9px;padding:9px 4px;border:1px solid var(--line);font-size:9px;color:var(--muted);cursor:pointer}
.frame-option input{position:absolute;opacity:0;width:1px;height:1px}
.frame-option:has(input:checked){border-color:var(--orange);color:var(--paper);background:#211b17}
.frame-option:has(input:focus-visible){outline:2px solid var(--orange);outline-offset:3px}
.frame-thumbnail{display:block;position:relative;width:38px;aspect-ratio:2/3;background:#292b2e;border:3px double #937a43}
.frame-thumbnail img{width:100%;height:100%;display:block;object-fit:cover}
.frame-thumbnail.gothic{border:0;background:#272526}
.frame-thumbnail.gold{box-shadow:inset 0 -8px #29251c}
.frame-thumbnail.silver{border:2px double #bbc7d1;box-shadow:inset 0 -4px #20272d}
.frame-thumbnail.bare{border:1px solid #555a63}
.frame-custom-option{grid-column:1/-1;flex-direction:row;justify-content:center;min-height:44px;gap:12px;font-size:11px}
.frame-custom-option .frame-thumbnail{width:16px;height:24px;border:2px dashed currentColor;background:none}
#custom-frame-controls{margin-top:18px;padding-top:17px;border-top:1px solid var(--line)}
#custom-frame-controls .field-label{margin-top:16px}
#custom-frame-controls .effect-options,#custom-frame-controls .helper{margin-top:12px}
#frame-art-preview{display:block;max-width:100%;width:64px;height:96px;object-fit:contain;background:repeating-conic-gradient(#303239 0% 25%,#191b20 0% 50%) 0 0/12px 12px;border:1px solid var(--line);margin-top:10px}
.frame-helper{margin-top:13px;font-size:10px}
.background-depth-section .section-heading{margin-bottom:10px}
.depth-upload{font-size:11px;padding:9px 12px;cursor:pointer;min-height:36px}
.depth-upload[aria-disabled=true]{cursor:default;opacity:.4}
.depth-advice{margin-top:13px;font-size:10px}
.layout-section .section-heading{margin-bottom:10px}
.layout-section .field-label{margin-top:17px}
.layout-section .text-button[aria-pressed=true]{color:var(--orange)}
.position-fields{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:8px;margin-top:16px}
.position-fields label{font-size:10px;color:var(--muted);min-width:0}
.position-fields label>span{float:right;color:#666a72}
.position-fields input{display:block;width:100%;height:35px;margin-top:8px;padding:7px 5px 7px 8px;background:#101113;border:1px solid var(--line);border-radius:0;color:var(--paper);font:11px Consolas,monospace;min-width:0}
.position-fields input:disabled{opacity:.35}
.position-hint,.layout-note{font-size:10px;margin-top:13px}
.layout-actions{display:flex;justify-content:space-between;gap:15px;margin-top:18px}
.layout-actions .text-button{font-size:10px}
.layout-selection{position:absolute;left:0;top:0;border:1px solid var(--orange);pointer-events:none;z-index:2}
.layout-selection>span{position:absolute;left:-1px;bottom:100%;max-width:230px;padding:5px 8px;background:var(--orange);color:#17100c;font-size:10px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.layout-selection:after{content:"+";position:absolute;left:50%;top:50%;transform:translate(-50%,-50%);color:var(--orange);font:20px Consolas,monospace;text-shadow:0 1px 3px #000}
.card.editing-position{cursor:move}
.model-section .section-heading{margin-bottom:10px}
.back-section .section-heading{margin-bottom:10px}
.back-section .field-label{margin-top:16px}
.back-import-button{display:flex;align-items:center;justify-content:space-between;width:100%;margin-top:20px;font-size:11px;border-color:#70503e}
.back-import-button>span{color:var(--orange);font-size:17px}
.model-upload{display:flex;align-items:center;justify-content:space-between;margin-top:14px;width:100%;border-color:#70503e;cursor:pointer;font-size:11px}
.model-upload:hover,.model-upload.drag-over{border-color:var(--orange);background:#211b17}
.model-upload[aria-disabled=true]{opacity:.4;cursor:default}
.model-upload>span:last-child{font-size:18px;color:var(--orange)}
.model-upload-note{display:flex;justify-content:space-between;align-items:center;gap:10px;margin-top:10px;color:var(--muted);font-size:9px}
.model-upload-note .text-button{font-size:10px}
.model-status,.model-info{font-size:10px;margin-top:10px;overflow-wrap:anywhere}
.model-status.error{color:#ffb99e}
#model-progress{width:100%;height:4px;margin-top:12px;accent-color:var(--orange)}
.model-switches{display:flex;flex-wrap:wrap;gap:16px;margin-top:16px;font-size:11px;color:var(--muted)}
.model-switches label{display:flex;align-items:center;gap:7px;cursor:pointer}
.model-switches input{accent-color:var(--orange);margin:0}
.scene-details{margin-top:22px;padding-top:18px;border-top:1px solid var(--line)}
.scene-details summary{font-size:11px;cursor:pointer;color:var(--paper)}
.scene-details .effect-options{margin-top:16px}
.scene-details .field-label{margin-top:16px}
.scene-colors{grid-template-columns:1fr 1fr}
#model-inspector .layout-actions{gap:8px}
.section-heading{display:flex;align-items:center;justify-content:space-between;margin-bottom:22px;gap:15px}
h2{font-size:13px;font-weight:550}
.section-heading .text-button{font-size:10px}
.optional-label{font-size:10px;color:var(--muted)}
.slider-field{display:grid;grid-template-columns:1fr auto;gap:12px;margin-top:22px;align-items:center}
.slider-field label{font-size:11px;color:#c0c1c6}
.slider-field output{font-size:10px;font-family:Consolas,monospace;font-variant-numeric:tabular-nums;color:var(--muted)}
input[type=range]{grid-column:1/-1;appearance:none;width:100%;margin:0;height:3px;background:#3c3e46;accent-color:var(--orange);cursor:pointer;border-radius:0}
input[type=range]::-webkit-slider-thumb{appearance:none;width:11px;height:11px;background:var(--paper);border:0;border-radius:50%}
input[type=range]::-moz-range-thumb{width:11px;height:11px;background:var(--paper);border:0;border-radius:50%}
input[type=range]:disabled{opacity:.3;cursor:default}
.range-ends{grid-column:1/-1;display:flex;justify-content:space-between;font-size:9px;color:var(--muted);margin-top:-2px}
.helper{font-size:11px;line-height:1.8;color:var(--muted)}
.custom-effects-section .section-heading{margin-bottom:10px}
.effect-add-row{display:grid;grid-template-columns:1fr auto;gap:9px;margin-top:14px}
.effect-select{width:100%;min-width:0;border:1px solid var(--line);background:#101113;color:var(--paper);border-radius:0;padding:9px;font:11px var(--font);height:38px;cursor:pointer}
.effect-add-row .secondary-button{min-height:38px;padding:8px 13px;font-size:11px;border-color:#70503e}
.effect-empty,.effect-scope-hint{font-size:10px;margin-top:13px}
.effect-layer{padding:15px 0 17px;border-bottom:1px solid var(--line)}
.effect-layer-header{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-bottom:15px}
.effect-enabled{display:flex;gap:8px;align-items:center;cursor:pointer;font-size:12px}
.effect-enabled input{margin:0;accent-color:var(--orange);width:13px;height:13px}
.effect-options{display:grid;grid-template-columns:80px 1fr;gap:15px;align-items:end}
.effect-options>label{font-size:10px;color:var(--muted);display:flex;flex-direction:column;gap:8px;min-width:0}
.effect-color{padding:3px;width:100%;height:34px;background:#101113;border:1px solid var(--line);cursor:pointer;border-radius:0}
.effect-options .effect-select{height:34px;padding:7px 9px}
.effect-layer .slider-field{margin-top:16px;gap:10px}
.effect-layer:has(.effect-enabled input:not(:checked)) .effect-options,.effect-layer:has(.effect-enabled input:not(:checked)) .slider-field{opacity:.4}
.cutout-section .section-heading{margin-bottom:10px}
.cutout-button{display:flex;justify-content:space-between;align-items:center;width:100%;margin-top:13px;border-color:#70503e}
.cutout-button>span{color:var(--orange);font-size:16px}
.cutout-status{font-size:10px;line-height:1.8;color:var(--muted);margin-top:10px;overflow-wrap:anywhere}
.cutout-status.error{color:#ffb99e}
.cutout-progress{margin-top:12px}
.cutout-progress progress{display:block;width:100%;height:4px;accent-color:var(--orange)}
.cutout-compare{display:grid;grid-template-columns:1fr 1fr;gap:10px;margin-top:16px}
.cutout-compare figure{margin:0;min-width:0}
.cutout-image{height:140px;background:#0b0c0e;border:1px solid var(--line);display:flex;align-items:center;justify-content:center}
.cutout-image img{width:100%;height:100%;object-fit:contain}
.transparency-grid{background-color:#e0e0e0;background-image:conic-gradient(#bdbdbd 25%,transparent 0 50%,#bdbdbd 0 75%,transparent 0);background-size:14px 14px}
.cutout-compare figcaption{font-size:10px;color:var(--muted);margin-top:7px}
.cutout-actions{display:flex;gap:14px;align-items:center;justify-content:space-between;margin-top:14px}
.cutout-actions .secondary-button{font-size:11px;padding:9px 12px;min-height:36px}
.cutout-advice{margin-top:12px}
.layers-section .section-heading{margin-bottom:10px}
.layer-upload-row{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-top:15px}
.layer-upload{font-size:11px;padding:9px 12px;cursor:pointer;min-height:36px}
.layer-upload[aria-disabled=true]{cursor:default;opacity:.4}
.layer-name{font-size:10px;color:var(--muted);margin-top:11px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.layer-advice{margin-top:19px}
.privacy-note{display:flex;gap:11px;margin-top:32px;color:var(--muted)}
.privacy-note>span{color:var(--orange);font-size:16px;line-height:1.2}
.privacy-note p{font-size:10px;line-height:1.9}
.preview{position:relative;min-width:0;display:grid;grid-template-rows:62px minmax(0,1fr) 83px;background:#0b0c0e;overflow:hidden}
.preview-topbar{display:flex;justify-content:space-between;gap:16px;padding:0 34px;align-items:center;font-size:11px;color:var(--muted)}
.preview-tools{display:flex;align-items:center;gap:16px;color:var(--paper);flex-shrink:0}
.preview-tools .viewer-button{min-height:29px;padding:6px 10px;font-size:10px}
.preview-tools .viewer-button[aria-pressed=true]{border-color:var(--orange);color:var(--orange)}
.preview-topbar #mode-label{overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.viewer-stage{position:relative;display:flex;align-items:center;justify-content:center;min-height:0;touch-action:pan-y;isolation:isolate}
.viewer-stage:before{content:"";position:absolute;width:min(55%,540px);height:1px;bottom:3%;background:#292b31;z-index:-1}
.card{position:absolute;inset:0;touch-action:none;cursor:grab}
.card.dragging{cursor:grabbing}
.card canvas{display:block;width:100%;height:100%;pointer-events:none}
.preview-bottom{display:flex;align-items:center;justify-content:space-between;gap:22px;padding:0 34px;border-top:1px solid #24262b}
.interaction-hint{font-size:10px;color:var(--muted);line-height:1.8}
.touch-hint{display:none}
.viewer-actions{display:flex;gap:7px;flex-shrink:0}
.viewer-button{border:1px solid #36383f;background:#17181bc9;color:#c6c7ca;padding:9px 12px;font-size:10px;min-height:35px;white-space:nowrap;backdrop-filter:blur(12px)}
.viewer-button:hover:not(:disabled){background:#2b2d32;color:var(--paper)}
kbd{font:8px/1.2 Consolas,monospace;border:1px solid #4a4d55;padding:1px 3px;color:var(--muted);margin-left:8px}
.status-message{position:absolute;bottom:95px;left:50%;transform:translateX(-50%);width:max-content;max-width:calc(100% - 60px);text-align:center;font-size:11px;color:var(--paper);line-height:1.7;pointer-events:none}
.status-message:not(:empty){background:#24262bec;border:1px solid #40434b;padding:10px 15px;backdrop-filter:blur(12px)}
.status-message.error{color:#ffb99e;border-color:#a5593f}
.empty-state{display:flex;flex-direction:column;align-items:center;gap:20px}
.empty-card{width:210px;aspect-ratio:2/3;border:1px solid #41444c;background:#141518;display:flex;flex-direction:column;justify-content:center;padding:32px;color:#686b74;transform:rotate(-5deg)}
.empty-card>span{font-size:30px;font-weight:300;letter-spacing:-1px;line-height:1.3}
.empty-card small{margin-top:auto;font-size:8px;letter-spacing:2px;color:#80828a}
.empty-state>p{font-size:12px;color:var(--muted);margin-top:5px}
.preview:fullscreen{width:100%;height:100%;grid-template-rows:62px minmax(0,1fr) 83px}
@media(max-width:1050px){.workspace{grid-template-columns:300px minmax(0,1fr)}.sidebar{padding-inline:22px}.topbar{padding-inline:24px;gap:25px}.preview-topbar,.preview-bottom{padding-inline:23px}.preview-bottom{gap:12px;flex-wrap:wrap;justify-content:center;align-content:center}.interaction-hint{text-align:center;flex-basis:100%}.viewer-button{padding:7px 11px;min-height:31px}}
@media(max-width:720px){body{overflow:auto}.topbar{height:66px;padding-inline:17px;gap:12px}.wordmark{font-size:22px;gap:9px}.wordmark span{font-size:8px;letter-spacing:1.6px;padding-left:9px}.top-note{display:none}.top-actions{gap:14px}.quiet-button{font-size:10px}.primary-button{padding:10px 12px;min-height:36px;font-size:10px;gap:12px}.workspace{height:auto;min-height:calc(100dvh - 66px);display:flex;flex-direction:column}.preview{order:-1;height:68svh;min-height:480px;grid-template-rows:49px minmax(0,1fr) 83px}.preview-topbar{padding-inline:19px;font-size:10px}.preview-bottom{padding:11px 16px;gap:8px}.sidebar{border-right:0;border-top:1px solid var(--line);overflow:visible;padding:30px 25px 40px}.upload-zone{min-height:122px}.section-intro{font-size:13px}.helper,.privacy-note p{font-size:11px}.slider-field label{font-size:12px}.text-input{height:43px;font-size:13px}input[type=range]{height:4px;margin:5px 0}input[type=range]::-webkit-slider-thumb{width:17px;height:17px}input[type=range]::-moz-range-thumb{width:17px;height:17px}.empty-card{width:160px;padding:25px}.empty-card>span{font-size:25px}.empty-state{gap:13px}.empty-state>p{font-size:11px}.status-message{max-width:calc(100% - 30px);bottom:94px}.preview:fullscreen{min-height:0;height:100dvh}.preview:fullscreen .viewer-stage{touch-action:none}}
@media(hover:none){.desktop-hint{display:none}.touch-hint{display:inline}kbd{display:none}}
@media(max-width:720px){.has-models .preview{height:82svh;min-height:600px}.preview-tools{gap:8px}.preview-tools .viewer-button{padding-inline:8px}.model-upload{min-height:43px}.model-status,.model-info{font-size:11px}}
@media(max-width:720px){
  body.layout-editing{overflow:hidden}
  .layout-editing .preview{position:fixed;left:0;right:0;top:66px;height:calc(100dvh - 306px);min-height:0;grid-template-rows:39px minmax(0,1fr);z-index:4}
  .layout-editing .preview-bottom{display:none}
  .layout-editing .sidebar{padding:0;border:0}
  .layout-editing .sidebar>:not(.layout-section){display:none}
  .layout-editing .layout-section{position:fixed;left:12px;right:12px;bottom:12px;z-index:5;margin:0;padding:14px;background:#131416;border:1px solid #45464d}
  .layout-editing .layout-section>p,.layout-editing .layout-note,.layout-editing .layout-section .field-label{display:none}
  .layout-editing .layout-section .section-heading{margin-bottom:10px}
  .layout-editing .layout-section .effect-select{height:34px;padding:7px 9px}
  .layout-editing .position-fields{margin-top:12px}
  .layout-editing .position-hint{margin-top:8px;font-size:9px;line-height:1.5}
  .layout-editing .layout-actions{margin-top:12px}
}
@media(prefers-reduced-transparency:reduce){.viewer-button,.status-message:not(:empty){background:#24262b;backdrop-filter:none}}
@media(prefers-reduced-motion:reduce){*{scroll-behavior:auto!important;transition:none!important}}

.project-controls{padding-bottom:17px;border-bottom:1px solid var(--line)}
.project-buttons{display:grid;grid-template-columns:1fr 1fr;gap:8px}
.project-buttons button{padding:9px 8px;font-size:11px}
.history-controls{display:flex;align-items:center;gap:15px;margin-top:13px}
.history-controls button{font-size:10px}
#autosave-status{margin-left:auto;font-size:9px;color:var(--muted);text-align:right;line-height:1.5}
.studio-nav{position:sticky;top:-29px;z-index:3;display:grid;grid-template-columns:repeat(5,minmax(0,1fr));gap:2px;margin:0 -25px 22px;padding:14px 20px 10px;background:var(--panel);border-bottom:1px solid var(--line)}
.studio-nav button{border:0;border-bottom:2px solid transparent;background:transparent;color:var(--muted);padding:10px 2px;font-size:11px;min-height:40px}
.studio-nav button[aria-pressed=true]{border-bottom-color:var(--orange);color:var(--paper)}
.studio-nav button:hover{color:var(--paper)}
.sidebar [data-page]:not([hidden]){margin-top:0;padding-top:0;border-top:0}
.sidebar [data-page]:not([hidden])~[data-page]:not([hidden]){margin-top:27px;padding-top:23px;border-top:1px solid var(--line)}
.studio-section .section-heading{margin-bottom:12px}
.studio-section .field-label{margin-top:17px}
.file-control{display:flex;flex-wrap:wrap;align-items:center;gap:10px;margin:17px 0}
.file-control .secondary-button{padding:8px 10px;font-size:10px;min-height:34px}
.file-control>span{font-size:9px;max-width:100%;overflow-wrap:anywhere}
.wide-button{width:100%;justify-content:center;margin-top:18px}
.studio-layer-row{display:flex;align-items:center;gap:7px;border:1px solid transparent;padding:5px 7px;margin:3px -7px;min-height:37px}
.studio-layer-row.selected{border-color:#70503e;background:#211b17}
.studio-layer-row input{accent-color:var(--orange);width:13px;height:13px;flex-shrink:0;margin:0}
.layer-select{flex:1;min-width:0;border:0;text-align:left;background:transparent;font-size:11px;color:var(--paper);padding:5px 0;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.layer-lock{font-size:9px;width:30px;flex-shrink:0;text-align:right}
.layer-lock[aria-pressed=true]{color:var(--orange)}
#studio-layer-list h3{font-size:10px;font-weight:400;color:var(--muted);margin:18px 0 7px}
.view-presets{display:grid;grid-template-columns:repeat(3,1fr);gap:8px}
.view-presets .secondary-button{padding:8px;font-size:10px;min-height:34px}
.saved-view{display:flex;justify-content:space-between;gap:12px;padding:9px 0;border-bottom:1px solid var(--line)}
.saved-view button{font-size:10px}
#lighting-section #environment-details{margin-top:15px;padding-top:0;border:0}
#lighting-section #environment-details>summary{display:none}
#custom-back-controls{margin:16px 0 20px;padding-bottom:20px;border-bottom:1px solid var(--line)}
#custom-back-controls .effect-options{grid-template-columns:1fr 1fr}
#pick-material{margin-top:12px;font-size:10px}
#video-progress{width:100%;height:6px;margin-top:15px;accent-color:var(--orange)}
#alignment-guides{position:absolute;pointer-events:none;border:1px solid #f3eee033;background-image:linear-gradient(to right,#ffffff17 1px,transparent 1px),linear-gradient(to bottom,#ffffff17 1px,transparent 1px);background-size:10% 10%;z-index:1}
#alignment-guides::before,#alignment-guides::after{content:"";position:absolute;background:#ff78498c}
#alignment-guides::before{width:1px;top:0;bottom:0;left:50%}
#alignment-guides::after{height:1px;left:0;right:0;top:50%}
.mask-dialog{width:min(960px,calc(100vw - 28px));max-height:92dvh;padding:22px;background:var(--panel);color:var(--paper);border:1px solid #50535c;overflow:auto}
.mask-dialog::backdrop{background:#000b;backdrop-filter:blur(5px)}
.dialog-heading{display:flex;justify-content:space-between;align-items:center;gap:20px;margin-bottom:10px}
.mask-tools{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:20px;margin:18px 0}
.mask-tools label{font-size:11px;color:var(--muted);display:flex;flex-direction:column;gap:10px;min-width:0}
.mask-tools output{font:10px Consolas,monospace;color:var(--paper)}
.mask-preview{display:flex;align-items:center;justify-content:center;overflow:hidden;border:1px solid var(--line);min-height:160px;padding:12px}
#mask-canvas{display:block;max-width:100%;max-height:48dvh;object-fit:contain;cursor:crosshair;touch-action:none}
.dialog-actions{display:flex;justify-content:flex-end;flex-wrap:wrap;gap:10px;margin-top:18px}
@media(max-width:1050px){.studio-nav{margin-inline:-22px;padding-inline:17px}}
@media(max-width:720px){
  .studio-nav{top:0;margin-inline:-25px;padding-inline:20px}
  .studio-nav button{min-height:44px;font-size:12px}
  .project-buttons button{min-height:42px;font-size:12px}
  .studio-layer-row{min-height:44px}
  .layer-select{font-size:12px;padding-block:10px}
  .layer-lock{min-height:35px;width:35px}
  .file-control .secondary-button{min-height:42px;font-size:11px}
  .view-presets .secondary-button{min-height:42px;font-size:11px}
  .mask-dialog{padding:16px}
  .mask-tools{gap:12px}
  .mask-tools .effect-select{font-size:10px;padding-inline:4px}
  #mask-canvas{max-height:40dvh}
  .layout-editing .sidebar .layout-section{margin:0;padding:14px;border:1px solid #45464d}
}