:root{--color-primary: #004C97;--color-primary-dark: #003A75;--color-primary-light: #E8F0F8;--color-text: #333333;--color-text-secondary: #666666;--color-text-muted: #999999;--color-cta: #4A4A4A;--color-cta-hover: #333333;--color-link: #337AB7;--color-surface: #EFEFEF;--color-surface-hover: #E4E4E4;--color-background: #FFFFFF;--color-border: #DDDDDD;--color-border-light: #EEEEEE;--color-ai-accent: #2BA5B5;--color-ai-accent-light: #E8F6F8;--color-ai-accent-dark: #1E8A98;--color-error: #D32F2F;--color-error-light: #FDECEA;--color-success: #2E7D32;--color-success-light: #EDF7ED;--color-warning: #ED6C02;--color-warning-light: #FFF4E5;--color-tier-1: #4CAF50;--color-tier-2: #2196F3;--color-tier-3: #FF9800;--color-tier-4: #9C27B0;--font-heading: "Myriad Pro", "Segoe UI", system-ui, sans-serif;--font-body: "Helvetica Neue", Helvetica, Arial, sans-serif;--font-ui: var(--font-heading);--text-xs: .75rem;--text-sm: .875rem;--text-base: 1rem;--text-lg: 1.125rem;--text-xl: 1.25rem;--text-2xl: 1.5rem;--text-3xl: 2rem;--leading-tight: 1.2;--leading-normal: 1.5;--leading-relaxed: 1.65;--space-xs: .25rem;--space-sm: .5rem;--space-md: 1rem;--space-lg: 1.5rem;--space-xl: 2rem;--space-2xl: 3rem;--space-3xl: 4rem;--radius-sm: 4px;--radius-md: 8px;--radius-lg: 12px;--radius-xl: 16px;--radius-full: 9999px;--shadow-sm: 0 1px 2px rgba(0, 0, 0, .08);--shadow-md: 0 4px 12px rgba(0, 0, 0, .1);--shadow-lg: 0 8px 24px rgba(0, 0, 0, .12);--header-height: 60px;--action-bar-height: 64px;--package-panel-width: 320px;--chat-max-width: 720px;--transition-fast: .15s ease;--transition-normal: .25s ease;--transition-slow: .4s ease;--z-header: 100;--z-panel: 50;--z-overlay: 200;--z-modal: 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1fr;grid-template-columns:1fr 400px;grid-template-areas:"header header" "workspace-col chat"}.app-shell__header{grid-area:header;z-index:var(--z-header)}.app-shell__workspace-col{grid-area:workspace-col;display:flex;flex-direction:column;min-height:0}.app-shell__workspace{flex:1;overflow-y:auto;min-height:0}.app-shell__chat{grid-area:chat;display:flex;flex-direction:column;min-height:0;border-left:1px solid var(--color-border-light);background:var(--color-background)}.app-shell__chat-messages{flex:1;min-height:0;overflow-y:auto}.app-shell__chat-input{flex-shrink:0;border-top:1px solid var(--color-border-light);padding:var(--space-md)}@media(max-width:768px){.app-shell{grid-template-columns:1fr;grid-template-rows:var(--header-height) 1fr 300px;grid-template-areas:"header" "workspace-col" "chat"}.app-shell__chat{border-left:none;border-top:1px solid var(--color-border-light)}}.header{display:flex;align-items:center;height:var(--header-height);padding:0 var(--space-lg);background:var(--color-primary);color:#fff;gap:var(--space-xl)}.header__logo{flex-shrink:0}.header__logo-text{font-family:var(--font-heading);font-size:var(--text-lg);font-weight:600;letter-spacing:.15em;text-transform:uppercase}.header__nav{display:flex;align-items:center;gap:var(--space-xs);margin-left:auto}.header__stage{padding:var(--space-sm) var(--space-md);color:#ffffff73;font-family:var(--font-ui);font-size:var(--text-sm);font-weight:500;letter-spacing:.03em;border-radius:var(--radius-md)}.header__stage--active{color:#fff;background:#ffffff26}.header__persona{flex-shrink:0}.header__persona-badge{display:inline-block;padding:var(--space-xs) var(--space-sm);font-size:var(--text-xs);font-weight:600;letter-spacing:.05em;text-transform:uppercase;border:1px solid rgba(255,255,255,.3);border-radius:var(--radius-full);color:#ffffffe6}@media(max-width:768px){.header{padding:0 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var(--color-border-light);display:flex;align-items:center;justify-content:center;padding:var(--space-sm)}.pdm__image{max-width:100%;max-height:100%;object-fit:contain}.pdm__hero-info{display:flex;flex-direction:column;gap:var(--space-sm);flex:1;min-width:0}.pdm__description{font-size:var(--text-sm);line-height:var(--leading-relaxed);color:var(--color-text-secondary);margin:0}.pdm__tags{display:flex;flex-wrap:wrap;gap:6px}.pdm__tag{padding:3px var(--space-sm);font-size:var(--text-xs);color:var(--color-ai-accent-dark);background:var(--color-ai-accent-light);border-radius:var(--radius-sm)}.pdm__section{display:flex;flex-direction:column;gap:var(--space-sm)}.pdm__section-title{font-family:var(--font-heading);font-size:var(--text-sm);font-weight:700;color:var(--color-text);text-transform:uppercase;letter-spacing:.05em;margin:0}.pdm__specs{display:grid;grid-template-columns:1fr 1fr;gap:var(--space-xs) var(--space-lg)}.pdm__spec{display:flex;flex-direction:column;gap:2px;padding:var(--space-xs) 0}.pdm__spec-label{font-size:var(--text-xs);color:var(--color-text-muted);text-transform:uppercase;letter-spacing:.03em}.pdm__spec-value{font-size:var(--text-sm);color:var(--color-text);font-weight:500}.pdm__text-block{font-size:var(--text-sm);line-height:var(--leading-relaxed);color:var(--color-text-secondary);margin:0}.pdm__footer{display:flex;gap:var(--space-sm);padding:var(--space-lg);border-top:1px solid var(--color-border-light)}.pdm__btn{flex:1;padding:var(--space-sm) var(--space-md);font-family:var(--font-ui);font-size:var(--text-sm);font-weight:600;border-radius:var(--radius-md);cursor:pointer;transition:background var(--transition-fast),color 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4;background:#fff;border-radius:var(--radius-sm);margin-bottom:var(--space-sm)}.door-grid__thumbnail-img{position:absolute;top:0;right:0;bottom:0;left:0;width:100%;height:100%;object-fit:contain;object-position:center;padding:12%}.door-grid__thumbnail-label{position:absolute;top:0;right:0;bottom:0;left:0;display:flex;align-items:center;justify-content:center;font-family:var(--font-ui);font-size:var(--text-sm);color:var(--color-text-muted);font-weight:600}.door-grid__info{display:flex;flex-direction:column;gap:var(--space-xs);align-items:center;flex:1}.door-grid__name{font-family:var(--font-heading);font-size:var(--text-base);font-weight:600;color:var(--color-text)}.door-grid__line{font-size:var(--text-xs);color:var(--color-text-muted);text-transform:uppercase;letter-spacing:.05em}.door-grid__styles{display:flex;flex-wrap:wrap;gap:4px;justify-content:center}.door-grid__style-tag{padding:2px var(--space-sm);font-size:.65rem;color:var(--color-ai-accent-dark);background:var(--color-ai-accent-light);border-radius:var(--radius-sm)}.door-grid__actions{display:flex;gap:var(--space-xs);width:100%;margin-top:auto;padding-top:var(--space-sm)}.door-grid__action-btn{flex:1;display:flex;align-items:center;justify-content:center;gap:4px;padding:6px var(--space-sm);font-family:var(--font-ui);font-size:var(--text-xs);font-weight:600;border-radius:var(--radius-sm);cursor:pointer;transition:background var(--transition-fast),color var(--transition-fast);background:var(--color-surface);color:var(--color-text-secondary);border:1px solid var(--color-border-light)}.door-grid__action-btn:hover{background:var(--color-surface-hover);color:var(--color-text)}.door-grid__action-btn--primary{background:var(--color-primary);color:#fff;border-color:var(--color-primary)}.door-grid__action-btn--primary:hover{background:var(--color-primary-dark);border-color:var(--color-primary-dark)}.threekit-player{position:relative;width:100%;height:100%;background:#1a1a2e;overflow:hidden}.threekit-player__canvas{width:100%;height:100%}.threekit-player__loading{position:absolute;top:0;right:0;bottom:0;left:0;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:var(--space-md);background:#1a1a2ee6;color:#ffffffb3;font-size:var(--text-sm);z-index:1}.threekit-player__spinner{width:32px;height:32px;border:3px solid rgba(255,255,255,.2);border-top-color:var(--color-ai-accent);border-radius:50%;animation:tk-spin .8s linear infinite}@keyframes tk-spin{to{transform:rotate(360deg)}}.threekit-player__error{position:absolute;top:0;right:0;bottom:0;left:0;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:var(--space-sm);color:#ffffffb3;font-size:var(--text-sm);z-index:1}.threekit-player__error-detail{color:#fff6;font-size:var(--text-xs)}.builder-panel{background:var(--color-background);display:flex;flex-direction:column}.builder-panel__door-style{display:flex;align-items:center;justify-content:space-between;padding:var(--space-lg);border-bottom:1px solid var(--color-border-light)}.builder-panel__door-style-name{font-family:var(--font-heading);font-size:var(--text-2xl);font-weight:600;color:var(--color-text)}.builder-panel__reset{font-size:var(--text-xs);color:var(--color-link);font-weight:500;padding:0;white-space:nowrap}.builder-panel__reset:hover{text-decoration:underline}.builder-panel__groups{display:flex;flex-direction:column}.builder-panel__group{border-bottom:1px solid var(--color-border-light)}.builder-panel__group-header{display:flex;align-items:center;justify-content:space-between;width:100%;padding:var(--space-md) var(--space-lg);gap:var(--space-md);text-align:left;transition:background var(--transition-fast)}.builder-panel__group-header:hover{background:var(--color-surface)}.builder-panel__group-preview{display:flex;align-items:center;gap:var(--space-md);min-width:0}.builder-panel__swatch-preview{width:36px;height:36px;flex-shrink:0;border-radius:var(--radius-sm);background:var(--color-surface);border:1px solid var(--color-border-light);object-fit:cover}.builder-panel__group-info{display:flex;flex-direction:column;min-width:0}.builder-panel__group-label{font-size:var(--text-xs);font-weight:600;text-transform:uppercase;letter-spacing:.05em;color:var(--color-text-muted);margin-bottom:2px}.builder-panel__group-value{font-size:var(--text-sm);font-weight:500;color:var(--color-text);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.builder-panel__chevron{flex-shrink:0;font-size:10px;color:var(--color-text-muted);transition:transform var(--transition-fast)}.builder-panel__chevron--open{transform:rotate(180deg)}.builder-panel__options{padding:0 var(--space-lg) var(--space-lg)}.builder-panel__options-title{font-family:var(--font-heading);font-size:var(--text-base);font-weight:600;color:var(--color-text);margin-bottom:var(--space-md)}.builder-panel__tabs{display:flex;gap:2px;margin-bottom:var(--space-sm);background:var(--color-surface);border-radius:var(--radius-sm);padding:2px}.builder-panel__tab{flex:1;padding:6px 0;font-size:var(--text-xs);font-weight:600;text-transform:uppercase;letter-spacing:.04em;color:var(--color-text-muted);border-radius:var(--radius-xs, 4px);transition:background var(--transition-fast),color var(--transition-fast)}.builder-panel__tab:hover{color:var(--color-text)}.builder-panel__tab--active{background:var(--color-background);color:var(--color-text);box-shadow:var(--shadow-sm)}.builder-panel__filters{display:flex;gap:var(--space-sm);margin-bottom:var(--space-sm)}.builder-panel__filter{flex:1;display:flex;flex-direction:column;gap:2px}.builder-panel__filter-label{font-size:10px;font-weight:600;text-transform:uppercase;letter-spacing:.04em;color:var(--color-text-muted)}.builder-panel__filter-select{width:100%;padding:5px 8px;font-size:var(--text-xs);color:var(--color-text);background:var(--color-background);border:1px solid var(--color-border-light);border-radius:var(--radius-sm);-webkit-appearance:auto;-moz-appearance:auto;appearance:auto}.builder-panel__filter-select:focus{outline:none;border-color:var(--color-primary)}.builder-panel__option-species{display:block;font-weight:600;font-size:10px;line-height:1.2}.builder-panel__option-finish{display:block;font-weight:400;font-size:10px;line-height:1.2;color:var(--color-text-secondary, var(--color-text-muted))}.builder-panel__options-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(72px,1fr));gap:var(--space-xs)}.builder-panel__option-card{position:relative;display:flex;flex-direction:column;align-items:center;padding:var(--space-xs);background:var(--color-background);border:2px solid var(--color-border-light);border-radius:var(--radius-sm);transition:border-color var(--transition-fast),box-shadow var(--transition-fast);cursor:pointer;text-align:center}.builder-panel__option-card:hover{border-color:var(--color-border);box-shadow:var(--shadow-sm)}.builder-panel__option-card--selected{border-color:var(--color-primary);background:var(--color-primary-light)}.builder-panel__option-check{position:absolute;top:4px;right:4px;width:18px;height:18px;border-radius:var(--radius-full);background:var(--color-primary);color:#fff;font-size:10px;display:flex;align-items:center;justify-content:center;line-height:1}.builder-panel__option-image{width:48px;height:48px;border-radius:var(--radius-sm);margin-bottom:2px;border:1px solid var(--color-border-light);object-fit:cover}.builder-panel__option-image--placeholder{background:var(--color-surface)}.builder-panel__option-label{font-size:10px;font-weight:500;color:var(--color-text);line-height:1.2;word-break:break-word}.package-view{position:relative;z-index:1;background:var(--color-background);padding:var(--space-lg) var(--space-xl) var(--space-xl);min-height:100%}.package-view__header{display:flex;align-items:center;gap:var(--space-md);margin-bottom:var(--space-lg)}.package-view__title-group{flex:1;min-width:0}.package-view__title{font-family:var(--font-heading);font-size:var(--text-2xl);font-weight:600;color:var(--color-text);line-height:var(--leading-tight)}.package-view__meta{display:block;margin-top:2px;font-size:var(--text-sm);color:var(--color-text-muted)}.package-view__add-wrap{position:relative;flex-shrink:0}.package-view__add-btn{width:36px;height:36px;border:2px solid var(--color-primary);border-radius:var(--radius-full);background:var(--color-background);color:var(--color-primary);font-size:1.25rem;font-weight:600;line-height:1;cursor:pointer;display:flex;align-items:center;justify-content:center;transition:background var(--transition-fast),color var(--transition-fast)}.package-view__add-btn:hover{background:var(--color-primary);color:var(--color-background)}.package-view__picker{position:absolute;top:calc(100% + var(--space-xs));left:0;z-index:var(--z-panel);min-width:220px;display:grid;gap:2px;padding:var(--space-xs);border:1px solid var(--color-border-light);border-radius:var(--radius-lg);background:var(--color-background);box-shadow:var(--shadow-lg)}.package-view__picker-option{display:flex;align-items:center;justify-content:space-between;gap:var(--space-md);border:none;border-radius:var(--radius-md);background:transparent;color:var(--color-text);padding:.55rem .7rem;cursor:pointer;text-align:left;font-size:var(--text-sm)}.package-view__picker-option:hover{background:var(--color-primary-light)}.package-view__picker-hint{color:var(--color-text-muted);font-size:var(--text-xs)}.package-view__bundle-btn{flex-shrink:0;border:1px solid var(--color-border);border-radius:var(--radius-full);background:var(--color-background);color:var(--color-text);padding:.5rem 1rem;font-size:var(--text-sm);font-weight:600;cursor:pointer;transition:background var(--transition-fast),border-color var(--transition-fast)}.package-view__bundle-btn:hover{background:var(--color-primary-light);border-color:var(--color-primary)}.package-view__grid{display:grid;grid-template-columns:repeat(3,1fr);gap:var(--space-md)}.package-view__card{display:flex;align-items:stretch;gap:0;border:1px solid var(--color-border-light);border-radius:var(--radius-lg);background:var(--color-background);box-shadow:var(--shadow-sm);overflow:hidden;text-align:left;cursor:pointer;padding:0;transition:box-shadow var(--transition-fast),border-color var(--transition-fast)}.package-view__card:hover{box-shadow:var(--shadow-md);border-color:var(--color-border)}.package-view__card--selected{border-color:var(--color-primary);box-shadow:0 0 0 2px 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