@keyframes rt-spin{to{transform:rotate(1turn)}}.rt-spin{animation:rt-spin .8s linear infinite}.rt-editor{position:fixed;inset:0;z-index:40;display:flex;flex-direction:column;background:var(--rt-bg-app)}.rt-editor-body{flex:1;display:flex;min-height:0}.rt-editor-center{flex:1;display:flex;flex-direction:column;min-width:0}.rt-editor-fallback{position:fixed;inset:0;z-index:40;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:10px;background:var(--rt-bg-app)}.rt-editor-loading{padding:40px;text-align:center;color:var(--rt-text-muted)}.rt-rail{width:288px;flex-shrink:0;display:flex;flex-direction:column;background:var(--rt-bg-main);min-height:0}.rt-rail-left{border-right:1px solid var(--rt-border-muted)}.rt-rail-right{border-left:1px solid var(--rt-border-muted);width:320px}.rt-rail-tabs{display:flex;gap:2px;padding:8px;border-bottom:1px solid var(--rt-border-muted)}.rt-rail-tab{flex:1;display:inline-flex;align-items:center;justify-content:center;gap:6px;height:30px;border-radius:7px;font-size:12px;font-weight:600;color:var(--rt-text-muted);background:transparent;transition:all .12s}.rt-rail-tab:hover{color:var(--rt-text-secondary);background:var(--rt-surface-hover)}.rt-rail-tab-on{color:var(--rt-text-primary);background:var(--rt-surface-inset)}.rt-rail-badge{min-width:16px;height:16px;padding:0 4px;border-radius:8px;background:var(--rt-danger);color:#fff;font-size:10px;display:inline-flex;align-items:center;justify-content:center}.rt-rail-badge-ok{background:var(--rt-success)}.rt-panel-scroll{flex:1;overflow-y:auto;padding:12px}.rt-toolbar{height:52px;flex-shrink:0;display:flex;align-items:center;justify-content:space-between;gap:12px;padding:0 12px;background:var(--rt-bg-main);border-bottom:1px solid var(--rt-border-base)}.rt-toolbar-center,.rt-toolbar-left,.rt-toolbar-right{display:flex;align-items:center;gap:8px}.rt-icon-btn{display:inline-flex;align-items:center;justify-content:center;width:30px;height:30px;border-radius:7px;color:var(--rt-text-secondary);transition:all .12s}.rt-icon-btn:hover:not(:disabled){background:var(--rt-surface-hover);color:var(--rt-text-primary)}.rt-icon-btn:disabled{opacity:.4;cursor:default}.rt-icon-btn-on{background:var(--rt-accent-subtle);color:var(--rt-accent)}.rt-name-input{height:32px;min-width:160px;max-width:280px;padding:0 8px;border-radius:7px;font-size:14px;font-weight:600;color:var(--rt-text-primary);background:transparent;border:1px solid transparent;transition:all .12s}.rt-status-pill{flex-shrink:0;padding:3px 9px;border-radius:999px;font-size:10.5px;font-weight:700;text-transform:uppercase;letter-spacing:.03em}.rt-status-draft{background:var(--rt-surface-inset);color:var(--rt-text-muted)}.rt-status-review{background:var(--rt-warning-subtle,var(--rt-surface-inset));color:var(--rt-warning)}.rt-status-active{background:var(--rt-success-subtle,var(--rt-surface-inset));color:var(--rt-success)}.rt-name-input:hover{background:var(--rt-surface-hover)}.rt-name-input:focus{background:var(--rt-surface-card);border-color:var(--rt-border-strong);outline:none}.rt-save-chip{display:inline-flex;align-items:center;gap:5px;font-size:11px;font-weight:500;color:var(--rt-text-muted);padding:3px 8px;border-radius:6px}.rt-save-ok{color:var(--rt-success)}.rt-save-err{color:var(--rt-danger)}.rt-tool-group{display:inline-flex;align-items:center;gap:2px}.rt-segmented{display:inline-flex;padding:2px;background:var(--rt-surface-inset);border-radius:8px;gap:2px}.rt-segmented-btn{display:inline-flex;align-items:center;gap:5px;height:26px;padding:0 10px;border-radius:6px;font-size:12px;font-weight:600;color:var(--rt-text-muted);transition:all .12s}.rt-segmented-btn:hover{color:var(--rt-text-secondary)}.rt-segmented-btn-on{background:var(--rt-surface-card);color:var(--rt-text-primary);box-shadow:var(--rt-shadow-xs)}.rt-more-wrap{position:relative}.rt-more-backdrop{position:fixed;inset:0;z-index:50}.rt-more-menu{position:absolute;right:0;top:36px;z-index:51;min-width:190px;padding:6px;background:var(--rt-surface-card);border:1px solid var(--rt-border-base);border-radius:10px;box-shadow:var(--rt-shadow-lg)}.rt-more-item{display:flex;align-items:center;gap:9px;width:100%;padding:8px 10px;border-radius:7px;font-size:13px;color:var(--rt-text-secondary);transition:all .12s}.rt-more-item:hover{background:var(--rt-surface-hover);color:var(--rt-text-primary)}.rt-subject-bar{display:flex;gap:16px;padding:12px 20px;background:var(--rt-bg-main);border-bottom:1px solid var(--rt-border-muted)}.rt-subject-field{flex:1;display:flex;flex-direction:column;gap:4px}.rt-subject-label-row{display:flex;align-items:center;justify-content:space-between}.rt-subject-label{font-size:11px;font-weight:700;text-transform:uppercase;letter-spacing:.04em;color:var(--rt-text-faint)}.rt-subject-input{height:32px;padding:0 10px;border-radius:8px;font-size:13px;color:var(--rt-text-primary);background:var(--rt-surface-inset);border:1px solid transparent;transition:all .12s}.rt-subject-input:focus{outline:none;background:var(--rt-surface-card);border-color:var(--rt-border-strong)}.rt-lib-search{position:relative;margin-bottom:12px}.rt-lib-search-icon{position:absolute;left:10px;top:50%;transform:translateY(-50%);color:var(--rt-text-muted)}.rt-lib-search-input{width:100%;height:34px;padding:0 10px 0 30px;border-radius:8px;font-size:13px;background:var(--rt-surface-inset);border:1px solid transparent;color:var(--rt-text-primary)}.rt-lib-search-input:focus{outline:none;background:var(--rt-surface-card);border-color:var(--rt-border-strong)}.rt-lib-group{margin-bottom:16px}.rt-lib-group-title{display:flex;align-items:center;gap:5px;font-size:11px;font-weight:700;text-transform:uppercase;letter-spacing:.04em;color:var(--rt-text-faint);margin-bottom:8px;padding:0 2px}.rt-lib-grid{display:flex;flex-direction:column;gap:4px}.rt-lib-chip{position:relative;display:flex;align-items:center;gap:10px;padding:8px 9px;border-radius:9px;border:1px solid var(--rt-border-muted);background:var(--rt-surface-card);cursor:grab;transition:all .12s;-webkit-user-select:none;-moz-user-select:none;user-select:none}.rt-lib-chip:hover{border-color:var(--rt-border-strong);background:var(--rt-surface-hover)}.rt-lib-chip:active{cursor:grabbing}.rt-lib-chip-dragging{opacity:.4}.rt-lib-chip-overlay{box-shadow:var(--rt-shadow-lg);cursor:grabbing;width:220px;background:var(--rt-surface-card)}.rt-lib-chip-icon{display:flex;align-items:center;justify-content:center;width:30px;height:30px;border-radius:7px;background:var(--rt-surface-inset);color:var(--rt-text-secondary);flex-shrink:0}.rt-lib-chip:hover .rt-lib-chip-icon{color:var(--rt-accent)}.rt-lib-chip-body{min-width:0;flex:1}.rt-lib-chip-label{font-size:13px;font-weight:600;color:var(--rt-text-primary)}.rt-lib-chip-desc{font-size:11px;color:var(--rt-text-muted);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.rt-lib-fav{position:absolute;right:7px;top:7px;color:var(--rt-text-faint);opacity:0;transition:all .12s}.rt-lib-chip:hover .rt-lib-fav{opacity:1}.rt-lib-fav-on,.rt-lib-fav:hover{color:var(--rt-warning)}.rt-lib-fav-on{opacity:1}.rt-canvas-stage{flex:1;overflow-y:auto;padding:32px 24px 120px;display:flex;justify-content:center}.rt-canvas-email{align-self:flex-start;min-height:400px;border-radius:12px;box-shadow:var(--rt-shadow-md);overflow:hidden;transition:width .2s ease}.rt-canvas-mobile{box-shadow:var(--rt-shadow-lg);border-radius:20px}.rt-empty-canvas{flex-direction:column;padding:64px 24px;text-align:center}.rt-empty-canvas,.rt-empty-canvas-icon{display:flex;align-items:center;justify-content:center}.rt-empty-canvas-icon{width:48px;height:48px;border-radius:12px;background:var(--rt-surface-inset);color:var(--rt-text-muted);margin-bottom:14px}.rt-empty-canvas-title{font-size:15px;font-weight:600;color:var(--rt-text-primary)}.rt-empty-canvas-sub{font-size:13px;color:var(--rt-text-muted);margin-top:4px;margin-bottom:16px}.rt-canvas-block{position:relative;transition:box-shadow .1s}.rt-canvas-block.rt-content,.rt-canvas-block.rt-logic{outline:1.5px solid transparent;outline-offset:-1px;border-radius:4px}.rt-hovered{outline:1.5px solid var(--rt-accent-subtle)!important}.rt-selected{outline:1.5px solid var(--rt-accent)!important;outline-offset:-1px}.rt-dragging{opacity:.4}.rt-columns-row{display:flex;gap:0;background-size:cover;background-position:50%}.rt-column{flex:1;min-height:40px;padding:4px}.rt-empty-column{min-height:56px;margin:4px;border:1.5px dashed var(--rt-border-strong);color:var(--rt-text-faint)}.rt-content{padding:4px 12px}.rt-logic{margin:4px 8px;border:1.5px dashed var(--rt-accent);border-radius:10px;background:var(--rt-accent-subtle)}.rt-logic-header{display:inline-flex;align-items:center;gap:5px;padding:4px 10px;font-size:11px;font-weight:700;text-transform:uppercase;letter-spacing:.03em;color:var(--rt-accent)}.rt-logic-body{padding:0 4px 4px}.rt-block-controls{position:absolute;top:-11px;right:8px;z-index:5;display:flex;align-items:center;gap:2px;padding:2px;background:var(--rt-surface-card);border:1px solid var(--rt-border-base);border-radius:8px;box-shadow:var(--rt-shadow-sm)}.rt-block-tag{font-size:10px;font-weight:700;text-transform:uppercase;letter-spacing:.04em;color:var(--rt-text-muted);padding:0 6px}.rt-ctrl{display:inline-flex;align-items:center;justify-content:center;width:22px;height:22px;border-radius:5px;color:var(--rt-text-secondary);cursor:pointer}.rt-ctrl:hover{background:var(--rt-surface-hover);color:var(--rt-text-primary)}.rt-ctrl-danger:hover{background:var(--rt-danger-subtle);color:var(--rt-danger)}.rt-drop-zone{height:10px;position:relative;transition:height .12s ease}.rt-drop-zone-active,.rt-drop-zone-over{height:26px}.rt-drop-zone-active .rt-drop-line{background:var(--rt-accent-subtle)}.rt-drop-zone-off{opacity:.25}.rt-drop-line{position:absolute;left:8px;right:8px;top:50%;height:2px;border-radius:2px;transform:translateY(-50%);background:transparent;transition:background .1s}.rt-drop-zone-over .rt-drop-line{background:var(--rt-accent);box-shadow:0 0 0 3px var(--rt-accent-subtle)}.rt-drop-placeholder{left:8px;right:8px;transform:translateY(-50%);height:32px;z-index:6;border:1.5px dashed var(--rt-accent);border-radius:8px;background:var(--rt-accent-subtle);color:var(--rt-accent);font-size:11px;font-weight:600;pointer-events:none;box-shadow:0 2px 10px rgba(0,0,0,.08)}.rt-drop-add,.rt-drop-placeholder{position:absolute;top:50%;display:flex;align-items:center;justify-content:center}.rt-drop-add{left:50%;transform:translate(-50%,-50%) scale(.9);width:18px;height:18px;border-radius:50%;background:var(--rt-accent);color:#fff;opacity:0;transition:opacity .12s,transform .12s;box-shadow:var(--rt-shadow-sm);z-index:5}.rt-drop-zone:hover .rt-drop-add{opacity:1;transform:translate(-50%,-50%) scale(1)}.rt-drop-zone:hover .rt-drop-line{background:var(--rt-border-strong)}.rt-brand-presets{display:flex;flex-direction:column;gap:5px}.rt-brand-preset{display:flex;align-items:center;padding:7px 10px;border-radius:8px;border:1px solid var(--rt-border-base);text-align:left;color:var(--rt-text-primary);transition:all .12s}.rt-brand-preset:hover{border-color:var(--rt-border-strong);background:var(--rt-surface-hover)}.rt-brand-preset-on{border-color:var(--rt-accent);background:var(--rt-accent-subtle)}.rt-brand-btns,.rt-brand-logos{display:flex;flex-wrap:wrap;gap:8px}.rt-brand-btn-opt{padding:4px;border-radius:8px;border:1px solid var(--rt-border-base)}.rt-brand-btn-opt:hover{border-color:var(--rt-border-strong)}.rt-brand-btn-opt-on{border-color:var(--rt-accent);box-shadow:0 0 0 1px var(--rt-accent)}.rt-brand-logo-opt{position:relative;display:flex;flex-direction:column;align-items:center;gap:3px;width:72px;padding:6px;border-radius:8px;border:1px solid var(--rt-border-base);background:var(--rt-surface-inset)}.rt-brand-logo-opt:hover{border-color:var(--rt-border-strong)}.rt-brand-logo-opt-on{border-color:var(--rt-accent);box-shadow:0 0 0 1px var(--rt-accent)}.rt-brand-logo-opt img{max-height:28px;max-width:100%;-o-object-fit:contain;object-fit:contain}.rt-brand-logo-role{font-size:9px;text-transform:uppercase;letter-spacing:.03em;color:var(--rt-text-muted)}.rt-saved-grid{display:grid;grid-template-columns:1fr 1fr;gap:8px}.rt-saved-card{position:relative;overflow:hidden;border:1px solid var(--rt-border-base);border-radius:9px;background:var(--rt-surface-card);cursor:pointer;transition:border-color .12s}.rt-saved-card:hover{border-color:var(--rt-accent)}.rt-saved-thumb{position:relative;height:78px;overflow:hidden;background:#fff;display:flex;align-items:center;justify-content:center;color:var(--rt-text-faint);border-bottom:1px solid var(--rt-border-muted)}.rt-saved-thumb .rt-doc-preview{pointer-events:none}.rt-saved-foot{display:flex;align-items:center;gap:4px;padding:5px 7px}.rt-saved-name{font-weight:600;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.rt-saved-name,.rt-saved-rename{flex:1;min-width:0;font-size:11px;color:var(--rt-text-primary)}.rt-saved-rename{height:18px;padding:0 3px;border:1px solid var(--rt-accent);border-radius:4px;background:var(--rt-surface-card)}.rt-saved-actions{display:inline-flex;gap:1px;opacity:0;transition:opacity .12s}.rt-saved-card:hover .rt-saved-actions{opacity:1}.rt-saved-actions button{padding:2px;border-radius:4px;color:var(--rt-text-muted)}.rt-saved-actions button:hover{color:var(--rt-text-primary);background:var(--rt-surface-hover)}.rt-img-resize{position:absolute;right:2px;bottom:2px;z-index:6;width:14px;height:14px;border-radius:4px;background:var(--rt-accent);border:2px solid var(--rt-surface-card);cursor:nwse-resize;box-shadow:var(--rt-shadow-sm)}.rt-img-resize:hover{transform:scale(1.15)}.rt-col-resizer{position:relative;flex:0 0 0px;align-self:stretch;width:0;z-index:4;cursor:col-resize}.rt-col-resizer span{position:absolute;left:-4px;top:0;bottom:0;width:8px}.rt-col-resizer span:after{content:"";position:absolute;left:3px;top:8px;bottom:8px;width:2px;border-radius:2px;background:transparent;transition:background .12s}.rt-col-resizer:hover span:after{background:var(--rt-accent)}.rt-canvas-block.rt-multi{outline:2px solid var(--rt-accent);outline-offset:-1px;border-radius:4px}.rt-hidden-mobile{opacity:.4}.rt-hidden-badge,.rt-mobile-badge{position:absolute;top:-9px;right:8px;z-index:3;display:inline-flex;align-items:center;gap:4px;padding:2px 7px;border-radius:999px;font-size:10px;font-weight:600;box-shadow:var(--rt-shadow-sm)}.rt-hidden-badge{background:var(--rt-surface-inset);color:var(--rt-text-muted)}.rt-mobile-badge{background:var(--rt-accent-subtle);color:var(--rt-accent)}.rt-canvas-dark .rt-block-controls{filter:none}.rt-empty-column{display:flex;align-items:center;justify-content:center;gap:6px;width:100%;min-height:52px;border:1.5px dashed var(--rt-border-base);border-radius:8px;color:var(--rt-text-muted);font-size:12px;font-weight:500;transition:all .12s}.rt-empty-column:hover{border-color:var(--rt-accent);color:var(--rt-accent);background:var(--rt-accent-subtle)}.rt-video-thumb{position:relative;overflow:hidden;background:#18181b;min-height:60px}.rt-video-placeholder{height:180px;color:#71717a;font-size:13px}.rt-video-placeholder,.rt-video-play{display:flex;align-items:center;justify-content:center}.rt-video-play{position:absolute;left:50%;top:50%;transform:translate(-50%,-50%);width:52px;height:52px;border-radius:50%;background:rgba(255,255,255,.92);color:#18181b;font-size:18px;padding-left:4px;box-shadow:0 4px 16px rgba(0,0,0,.3)}.rt-video-btn{margin-top:10px;border-radius:999px;padding:8px 18px}.rt-app-badge,.rt-video-btn{display:inline-block;background:#111827;color:#fff;font-size:13px;font-weight:600}.rt-app-badge{margin:0 6px;border-radius:8px;padding:10px 18px}.rt-quick-insert{position:fixed;z-index:90;background:var(--rt-surface-card);border:1px solid var(--rt-border-base);border-radius:12px;box-shadow:var(--rt-shadow-lg);overflow:hidden;animation:rt-toast-in .14s ease-out}.rt-quick-insert-search{display:flex;align-items:center;gap:8px;padding:10px 12px;border-bottom:1px solid var(--rt-border-muted);color:var(--rt-text-muted)}.rt-quick-insert-search input{flex:1;background:transparent;border:0;outline:none;font-size:12.5px;color:var(--rt-text-primary)}.rt-quick-insert-list{overflow-y:auto;padding:6px;display:grid;grid-template-columns:1fr 1fr;gap:2px}.rt-quick-insert-item{display:flex;align-items:center;gap:8px;padding:7px 9px;border-radius:7px;font-size:12px;color:var(--rt-text-secondary);text-align:left}.rt-quick-insert-item:hover{background:var(--rt-surface-hover);color:var(--rt-text-primary)}.rt-quick-insert-empty{grid-column:1/-1;padding:16px;text-align:center;font-size:12px;color:var(--rt-text-muted)}.rt-context-banner{display:flex;align-items:center;gap:8px;margin:10px 16px 0;padding:8px 12px;border-radius:9px;border:1px solid var(--rt-accent);background:var(--rt-accent-subtle);color:var(--rt-accent);font-size:12.5px;font-weight:500}.rt-context-banner span{flex:1}.rt-save-banner{display:flex;align-items:center;gap:8px;margin:10px 16px 0;padding:8px 12px;border-radius:9px;border:1px solid var(--rt-danger-border);background:var(--rt-danger-subtle);color:var(--rt-danger);font-size:12.5px}.rt-save-banner-conflict{border-color:var(--rt-warning-border,var(--rt-danger-border));background:var(--rt-warning-subtle,var(--rt-danger-subtle));color:var(--rt-warning,var(--rt-danger))}.rt-save-banner-btn{margin-left:auto;flex-shrink:0;padding:4px 10px;border-radius:7px;font-size:12px;font-weight:600;background:var(--rt-surface-card);border:1px solid var(--rt-border-base);color:var(--rt-text-primary)}.rt-save-banner-btn:hover{background:var(--rt-surface-hover)}.rt-block-heading,.rt-block-text{padding:4px 0}.rt-block-text :where(p){margin:0 0 8px}.rt-block-text :where(p:last-child){margin-bottom:0}.rt-placeholder{color:var(--rt-text-faint)}.rt-spacer{background:repeating-linear-gradient(45deg,transparent,transparent 6px,var(--rt-surface-inset) 6px,var(--rt-surface-inset) 7px);border-radius:4px}.rt-image-placeholder{padding:8px 0}.rt-image-placeholder-inner{display:inline-flex;align-items:center;justify-content:center;min-height:120px;min-width:120px;width:100%;background:var(--rt-surface-inset);border-radius:8px;color:var(--rt-text-faint);font-size:12px}.rt-html-block{border:1px dashed var(--rt-border-strong);border-radius:8px;padding:8px}.rt-html-badge{font-size:10px;font-weight:700;text-transform:uppercase;color:var(--rt-text-faint);margin-bottom:6px}.rt-html-preview{font-size:13px}.rt-social-dot{display:inline-flex;align-items:center;justify-content:center;width:30px;height:30px;margin:0 3px;border-radius:50%;background:var(--rt-surface-inset);color:var(--rt-text-secondary);font-size:12px;font-weight:700}.rt-nav-link{margin:0 10px;font-size:13px;font-weight:600;color:var(--rt-text-primary)}.rt-hero{display:flex;align-items:center;justify-content:center;background-size:cover;background-position:50%;color:#fff;padding:40px 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