:root{font-family:DM Sans,-apple-system,BlinkMacSystemFont,Segoe UI,sans-serif;color:var(--text-primary);background:var(--surface-canvas);font-synthesis:none;font-size:14px;font-weight:450}*{box-sizing:border-box}body{margin:0}button,input,select{font:inherit}input::placeholder,textarea::placeholder{color:var(--feedback-placeholder);opacity:1}button{cursor:pointer;color:inherit;border:0;background:none;display:inline-flex;align-items:center;justify-content:center;gap:8px}button:disabled{cursor:default;opacity:.38}button:focus-visible,input:focus-visible,select:focus-visible{outline:3px solid var(--focus-outline);outline-offset:3px}button{transition:background .15s,color .15s,box-shadow .15s}kbd{font:11px DM Sans,sans-serif;padding:2px 5px;border:1px solid var(--border-subtle);border-radius:4px;line-height:1.1;background:var(--surface-raised);color:var(--text-secondary)}svg{flex-shrink:0}.app-shell{height:100dvh;display:grid;grid-template-columns:224px minmax(0,1fr);grid-template-rows:65px minmax(0,1fr);overflow:hidden}.topbar{grid-column:1/-1;display:flex;align-items:center;background:var(--surface-chrome);border-bottom:1px solid var(--line);padding:0 22px;gap:15px;z-index:5}.brand{font-family:Manrope,sans-serif;display:flex;align-items:center;gap:10px;font-size:23px;font-weight:800;letter-spacing:-1px;min-width:157px}.brand-mark{display:flex;align-items:center;justify-content:center;background:var(--accent-action);border-radius:9px;color:var(--accent-foreground);width:32px;height:32px}.brand-dot{color:var(--accent-action)}.header-divider{height:22px;width:1px;background:var(--line);margin-right:0}.icon-button{width:34px;height:34px;border-radius:7px;color:var(--icon-default);padding:0;flex-shrink:0}.icon-button.active{background:var(--surface-focus);color:var(--accent-action)}.breadcrumbs{display:flex;align-items:center;gap:8px;min-width:0;overflow:auto;white-space:nowrap;scrollbar-width:none}.breadcrumbs 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20px;font-size:10px;font-weight:650;letter-spacing:1px;color:var(--text-secondary)}.prototype-tag{font-size:8px;letter-spacing:.65px;background:var(--surface-focus);color:var(--text-secondary);border-radius:3px;padding:3px 4px}.universe-row{justify-content:flex-start;padding:12px 10px;width:100%;background:var(--surface-focus);border-radius:7px;color:var(--text-primary);font-size:13px;font-weight:600;gap:9px}.count{margin-left:auto;border:1px solid var(--border-subtle);border-radius:4px;color:var(--text-secondary);font-size:10px;padding:1px 5px;background:var(--surface-raised)}.world-section{margin-top:28px}.section-label{font-size:10px;letter-spacing:1.15px;color:var(--text-secondary);margin:0 12px 13px;font-weight:600}.world-row{justify-content:flex-start;width:100%;padding:11px 12px;border-radius:6px;font-size:13px;gap:10px}.row-arrow{margin-left:auto;color:var(--text-secondary);opacity:0}.world-row:hover .row-arrow{opacity:1}.world-glyph{height:18px;width:18px;border:1px solid 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0}}@media(max-width:600px){.portal-gallery-card{flex-basis:176px}.portal-card-preview{height:110px}}.canvas-session .portal-resize-handle{border-color:var(--selection-outline);background:var(--surface-raised);box-shadow:var(--floating-control-shadow)}.portal-resize-handle:after{content:"";position:absolute;inset:-8px}.portal-resize-handle:focus-visible{outline:2px solid var(--focus-outline);outline-offset:3px}.portal-manager{position:fixed;z-index:25;top:var(--corner-inset, 12px);right:var(--corner-inset, 12px);width:344px;max-width:calc(100vw - 24px);max-height:calc(100dvh - 2 * var(--corner-inset, 12px));display:flex;flex-direction:column;gap:16px;padding:16px;border:1px solid var(--glass-rim);border-radius:20px;background:var(--floating-control-tint);color:var(--text-primary);box-shadow:var(--floating-control-shadow);backdrop-filter:blur(var(--glass-frost));font-size:13px;line-height:1.45}.portal-manager 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var(--selection-outline);background:var(--selection-fill)}.portal-manager footer{display:flex;gap:8px;align-items:center;flex-shrink:0}.portal-manager footer .primary-button{flex:1}.portal-manager .primary-button{min-height:40px;margin:0;font-size:13px;border-radius:11px}.portal-manager-empty,.portal-manager-hint{color:var(--text-secondary);margin:4px 0}.portal-manager form{display:flex;flex-direction:column;gap:12px}.portal-manager label{font-size:12px;font-weight:550}.portal-manager input{width:100%;min-height:42px;padding:10px 12px;color:var(--text-primary);background:var(--surface-raised);border:1px solid var(--border-subtle);border-radius:10px;font:inherit}.portal-manager input:focus-visible,.portal-manager button:focus-visible{outline:2px solid var(--text-primary);outline-offset:3px}.portal-manager-actions{display:flex;align-items:center;gap:8px}.portal-manager-actions>button{flex:1;min-height:40px;border-radius:10px;padding:8px 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details{margin-bottom:12px}.portal-delete-confirmation ul{padding-left:20px;max-height:120px;overflow:auto}.portal-framing-overlay{position:fixed;z-index:16;overflow:hidden;pointer-events:none}.portal-frame-opening{position:absolute;border:1px solid var(--selection-outline);box-shadow:0 0 0 1px var(--canvas-control-halo),0 0 0 100vmax var(--selection-scrim)}.portal-frame-handle{position:absolute;pointer-events:auto;touch-action:none;width:32px;height:32px;padding:0;border:0;background:transparent;transform:translate(-50%,-50%)}.portal-frame-handle:after{content:"";position:absolute;inset:11px;border:1px solid var(--selection-outline);border-radius:3px;background:var(--surface-raised);box-shadow:var(--floating-control-shadow)}.portal-frame-handle:focus-visible{outline:2px solid var(--focus-outline);outline-offset:1px;border-radius:8px;background:var(--surface-raised)}.portal-frame-handle.nw{left:0;top:0;cursor:nwse-resize}.portal-frame-handle.n{left:50%;top:0;cursor:ns-resize}.portal-frame-handle.ne{left:100%;top:0;cursor:nesw-resize}.portal-frame-handle.e{left:100%;top:50%;cursor:ew-resize}.portal-frame-handle.se{left:100%;top:100%;cursor:nwse-resize}.portal-frame-handle.s{left:50%;top:100%;cursor:ns-resize}.portal-frame-handle.sw{left:0;top:100%;cursor:nesw-resize}.portal-frame-handle.w{left:0;top:50%;cursor:ew-resize}.bottom-controls{transition:opacity .2s ease,translate .2s ease,visibility .2s}.bottom-controls.authoring-hidden{opacity:0;translate:0 16px;visibility:hidden;pointer-events:none}.portal-manager-enter-active,.portal-manager-leave-active,.portal-framing-enter-active,.portal-framing-leave-active{transition:opacity .2s ease,translate .2s ease}.portal-manager-enter-from,.portal-manager-leave-to{opacity:0;translate:0 -8px}.portal-framing-enter-from,.portal-framing-leave-to{opacity:0}@media(max-width:849px){.portal-manager{padding:12px;gap:12px}.portal-manager form{gap:8px}.portal-manager-hint{font-size:12px}}@media(prefers-reduced-motion:reduce){.bottom-controls,.portal-manager-enter-active,.portal-manager-leave-active,.portal-framing-enter-active,.portal-framing-leave-active{transition:none}}.portal-manager-impact{min-height:76px;height:76px}.portal-manager-impact.quiet{background:transparent;padding:10px 0}@media(max-width:849px)and (max-height:700px){.portal-manager.editing{max-height:52dvh}.portal-manager.editing form{overflow:auto;min-height:0;padding:3px}.portal-manager.editing .portal-manager-hint{display:none}.portal-manager.editing .portal-manager-impact{height:auto;min-height:0;font-size:11px;padding:4px 0}}.portal-create-preview{display:grid;place-items:center;border:1px dashed var(--focus-outline);background:color-mix(in srgb,var(--focus-outline) 9%,var(--surface-canvas))}.portal-create-icon{display:grid;place-items:center;width:52px;height:52px;border-radius:16px;background:color-mix(in srgb,var(--focus-outline) 14%,var(--surface-canvas));color:var(--text-primary);transition:background var(--portal-card-motion),box-shadow var(--portal-card-motion)}.portal-gallery-create:is(:hover,:focus-visible) .portal-create-icon{background:color-mix(in srgb,var(--focus-outline) 20%,var(--surface-canvas));box-shadow:var(--context-control-shadow)}:root{color-scheme:light;--surface-canvas: #eeeef0;--surface-chrome: #eeeef0;--surface-raised: #ffffff;--surface-focus: #e4e4e8;--text-primary: #252526;--text-secondary: #696970;--icon-default: #55555c;--border-subtle: #dcdce1;--glass-tint: rgb(248 248 250 / 96%);--glass-frost: 12px;--app-bar-frost: 4px;--glass-rim: rgb(40 40 40 / 18%);--glass-separation: 0 4px 20px rgb(0 0 0 / 7%);--floating-control-tint: color-mix( in srgb, var(--surface-chrome) 64%, transparent );--floating-control-hover: color-mix( in srgb, var(--surface-focus) 72%, transparent );--floating-control-shadow: 0 3px 12px rgb(0 0 0 / 8%);--accent-action: #29292b;--accent-action-hover: #424246;--accent-foreground: #ffffff;--selection-outline: #555558;--focus-outline: #555558;--feedback-error: #a23e38;--feedback-warning: #806123;--surface-warning: #faf5e8;--border-warning: #dfcfaa;--border-error: color-mix( in srgb, var(--feedback-error) 30%, var(--border-subtle) );--dialog-scrim: rgb(0 0 0 / 34%);--selection-scrim: rgb(0 0 0 / 28%);--selection-fill: color-mix( in srgb, var(--selection-outline) 8%, transparent );--canvas-control-halo: rgb(255 255 255 / 75%);--swatch-border: rgb(128 128 128 / 35%);--swatch-fixed-light: #ffffff;--swatch-fixed-dark: #000000;--chart-line: var(--text-primary);--chart-budget: var(--text-secondary);--feedback-placeholder: #777780;--canvas-dots: #aaaab2;--editing-caret: #252526;--editing-selection: #d9d9df;--editing-composition: #29292b;--wordmark-recess: #afafb6;--wordmark-prefix: #dadade;--wordmark-shadow: rgb(55 55 67 / 14%);--wordmark-highlight: rgb(255 255 255 / 65%);--thumbnail-overlay: linear-gradient( 180deg, rgb(255 255 255 / 52%), rgb(255 255 255 / 70%) 50%, rgb(255 255 255 / 60%) );--thumbnail-title: var(--text-primary);--thumbnail-title-shadow: 0 1px 8px rgb(255 255 255 / 75%);--thumbnail-icon: var(--text-primary);--thumbnail-control-hover: rgb(0 0 0 / 6%);--space-1: 4px;--space-2: 8px;--space-3: 12px;--space-4: 16px;--space-5: 24px;--space-6: 32px;--space-7: 48px;--space-8: 64px;--radius-control: 8px;--radius-surface: 14px;--radius-pill: 999px;--control-height: 40px;--icon-button-size: 44px;--icon-size: 20px;--font-ui: -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;--type-caption: 12px;--type-body: 14px;--type-heading: 28px;--motion-feedback: .15s;--motion-surface: .2s;--motion-focus: .35s;--motion-ease: cubic-bezier(.2, .7, .2, 1);--line: var(--border-subtle);--muted: var(--text-secondary);--blue: var(--accent-action)}:root[data-theme=dark]{color-scheme:dark;--surface-canvas: #111214;--surface-chrome: #111214;--surface-raised: #1b1c1f;--surface-focus: #252629;--text-primary: #eeeef0;--text-secondary: #a5a5aa;--icon-default: #babac0;--border-subtle: #303136;--glass-tint: rgb(28 29 32 / 97%);--glass-rim: rgb(220 220 225 / 20%);--glass-separation: 0 4px 20px rgb(0 0 0 / 15%);--floating-control-shadow: 0 3px 12px rgb(0 0 0 / 32%);--accent-action: #e9e9ed;--accent-action-hover: #d1d1d8;--accent-foreground: #191a1c;--selection-outline: #c3c3ca;--focus-outline: #c3c3ca;--feedback-error: #ffb5ad;--feedback-warning: #e3c991;--surface-warning: #2b261c;--border-warning: #665637;--dialog-scrim: rgb(0 0 0 / 55%);--selection-scrim: rgb(0 0 0 / 45%);--canvas-control-halo: rgb(0 0 0 / 70%);--feedback-placeholder: #a5a5aa;--canvas-dots: #62636a;--editing-caret: #eeeef0;--editing-selection: #45464c;--editing-composition: #e9e9ed;--wordmark-recess: #62636a;--wordmark-prefix: 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