:root{--scratchpad-font-ui:var(--font-brand,"Plus Jakarta Sans Variable", "Plus Jakarta Sans", system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif), var(--font-cjk-han-sans,"Noto Sans SC Variable", local("Source Han Sans SC"), local("Source Han Sans CN"), local("Noto Sans SC"), local("Noto Sans CJK SC"), local("思源黑体"), sans-serif)}.scratchpad-container{background-color:var(--sl-color-bg,#fff);width:100%;height:100vh;max-height:100vh;color:var(--sl-color-text,#1e293b);box-sizing:border-box;font-family:var(--scratchpad-font-ui);flex-direction:column;display:flex;overflow:hidden}.scratchpad-topbar,.scratchpad-doc-title,.scratchpad-doc-badge,.scratchpad-view-mode-selector,.scratchpad-view-btn,.scratchpad-action-chip,.scratchpad-toc-popup,.scratchpad-meta-panel,.scratchpad-quick-toolbar,.scratchpad-tool-btn,.scratchpad-statusbar,.scratchpad-modal-card,.scratchpad-trans-drawer,.scratchpad-toast{font-family:var(--scratchpad-font-ui)}.scratchpad-topbar{background-color:var(--sl-color-bg-nav,#ffffffe6);border-bottom:1px solid var(--sl-color-hairline,#00000014);-webkit-backdrop-filter:blur(12px);height:3.5rem;z-index:var(--layer-header,30);flex-shrink:0;justify-content:space-between;align-items:center;gap:.75rem;padding:0 1rem;display:flex}.scratchpad-topbar-left{flex:1;align-items:center;gap:.75rem;min-width:0;display:flex}.scratchpad-back-link{width:2.25rem;height:2.25rem;color:var(--sl-color-text-accent,var(--sl-color-text));cursor:pointer;background:0 0;border:none;border-radius:50%;flex-shrink:0;justify-content:center;align-items:center;text-decoration:none;transition:background-color .15s;display:inline-flex}.scratchpad-back-link:hover{background-color:var(--sl-color-gray-6,#0000000f)}.scratchpad-title-group{flex-direction:column;min-width:0;display:flex}.scratchpad-doc-title{white-space:nowrap;text-overflow:ellipsis;margin:0;font-size:1rem;font-weight:600;overflow:hidden}.scratchpad-doc-badge{color:var(--sl-color-gray-3,#64748b);white-space:nowrap;font-size:.75rem}.scratchpad-view-mode-selector{background-color:var(--sl-color-gray-6,#0000000a);border:1px solid var(--sl-color-hairline,#0000000f);border-radius:20px;align-items:center;padding:.2rem;display:inline-flex}.scratchpad-view-btn{height:1.85rem;color:var(--sl-color-gray-2,#475569);cursor:pointer;background:0 0;border:none;border-radius:16px;align-items:center;gap:.35rem;padding:0 .75rem;font-size:.85rem;font-weight:500;transition:all .18s cubic-bezier(.2,0,0,1);display:inline-flex}.scratchpad-view-btn.is-active{background-color:var(--sl-color-bg,#fff);color:var(--sl-color-text-accent,#0f766e);font-weight:600;box-shadow:0 1px 3px #00000014}.scratchpad-topbar-right{flex-shrink:0;align-items:center;gap:.5rem;display:flex}.scratchpad-action-chip{border:1px solid var(--sl-color-hairline,#00000026);height:2rem;color:var(--sl-color-text,#1e293b);cursor:pointer;white-space:nowrap;background:0 0;border-radius:8px;align-items:center;gap:.35rem;padding:0 .85rem;font-size:.85rem;font-weight:500;transition:all .15s;display:inline-flex}.scratchpad-action-chip:hover{background-color:var(--sl-color-gray-6,#0000000a);border-color:var(--sl-color-gray-4,#94a3b8)}.scratchpad-action-chip.is-primary{background-color:var(--sl-color-text-accent,#0f766e);color:#fff;border-color:#0000}.scratchpad-action-chip.is-primary:hover{filter:brightness(1.08)}.scratchpad-action-chip.is-active{background-color:var(--sl-color-gray-6,#00000014);border-color:var(--sl-color-text-accent);color:var(--sl-color-text-accent)}.scratchpad-toc-dropdown-wrap{display:inline-flex;position:relative}.scratchpad-toc-badge{background-color:var(--sl-color-gray-6,#00000014);color:var(--sl-color-text-accent,#0f766e);border-radius:10px;justify-content:center;align-items:center;min-width:1.15rem;height:1.15rem;margin-left:.15rem;padding:0 .35rem;font-size:.72rem;font-weight:600;display:inline-flex}.scratchpad-toc-popup{background-color:var(--sl-color-bg,#fff);border:1px solid var(--sl-color-hairline,#0000001f);width:20rem;max-width:90vw;max-height:28rem;z-index:var(--layer-popover,300);border-radius:12px;flex-direction:column;display:none;position:absolute;top:calc(100% + 8px);right:0;overflow:hidden;box-shadow:0 8px 30px #0000001f,0 2px 8px #0000000f}.scratchpad-toc-popup.is-open{display:flex}.scratchpad-toc-popup-header{border-bottom:1px solid var(--sl-color-hairline,#00000014);background-color:var(--sl-color-bg-nav,#00000005);flex-shrink:0;justify-content:space-between;align-items:center;padding:.75rem 1rem;display:flex}.scratchpad-toc-popup-title{color:var(--sl-color-text,#1e293b);font-size:.9rem;font-weight:650}.scratchpad-toc-popup-close{width:1.6rem;height:1.6rem;color:var(--sl-color-gray-3,#64748b);cursor:pointer;background:0 0;border:none;border-radius:50%;justify-content:center;align-items:center;display:inline-flex}.scratchpad-toc-popup-close:hover{background-color:var(--sl-color-gray-6,#0000000f)}.scratchpad-toc-popup-list{scrollbar-width:thin;max-height:24rem;margin:0;padding:.5rem 0;list-style:none;overflow-y:auto}.scratchpad-toc-popup-item{margin:0;padding:0}.scratchpad-toc-popup-link{color:var(--sl-color-text,#334155);white-space:nowrap;text-overflow:ellipsis;padding:.4rem 1rem;font-size:.86rem;line-height:1.4;text-decoration:none;transition:background-color .12s,color .12s;display:block;overflow:hidden}.scratchpad-toc-popup-link:hover{background-color:var(--sl-color-gray-6,#0000000d);color:var(--sl-color-text-accent,#0f766e)}.scratchpad-toc-popup-item.level-2 .scratchpad-toc-popup-link{padding-left:1rem;font-weight:600}.scratchpad-toc-popup-item.level-3 .scratchpad-toc-popup-link{color:var(--sl-color-gray-2,#64748b);padding-left:1.75rem;font-size:.82rem}.scratchpad-toc-popup-item.level-4 .scratchpad-toc-popup-link{color:var(--sl-color-gray-3,#94a3b8);padding-left:2.5rem;font-size:.78rem}.scratchpad-toc-empty{text-align:center;color:var(--sl-color-gray-3,#94a3b8);padding:1.5rem 1rem;font-size:.85rem}.scratchpad-meta-panel{background-color:var(--sl-color-bg-nav,#00000005);border-bottom:1px solid var(--sl-color-hairline,#00000014);flex-shrink:0;padding:1rem 1.5rem;display:none}.scratchpad-meta-panel.is-open{display:block}.scratchpad-meta-grid{grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:.75rem 1.25rem;display:grid}.meta-field-group{flex-direction:column;gap:.3rem;display:flex}.meta-field-label{color:var(--sl-color-gray-3,#64748b);letter-spacing:.02em;font-size:.78rem;font-weight:600}.meta-field-input{border:1px solid var(--sl-color-hairline,#0003);background-color:var(--sl-color-bg,#fff);height:2.1rem;color:var(--sl-color-text);border-radius:6px;outline:none;padding:0 .65rem;font-size:.88rem;transition:border-color .15s}.meta-field-input:focus{border-color:var(--sl-color-text-accent,#0f766e)}.meta-panel-footer{justify-content:flex-end;margin-top:.75rem;display:flex}.meta-toggle-btn{color:var(--sl-color-text-accent);cursor:pointer;background:0 0;border:none;padding:0;font-size:.8rem;text-decoration:underline}.scratchpad-main-workspace{flex:1;width:100%;min-height:0;display:flex;position:relative;overflow:hidden}.view-split .scratchpad-editor-pane{border-right:1px solid var(--sl-color-hairline,#00000014);flex-direction:column;flex:1;min-width:0;max-width:50%;display:flex}.view-split .scratchpad-preview-pane{flex-direction:column;flex:1;min-width:0;max-width:50%;display:flex;overflow-y:auto}.view-edit .scratchpad-editor-pane{flex-direction:column;flex:1;width:100%;display:flex}.view-edit .scratchpad-preview-pane,.view-preview .scratchpad-editor-pane{display:none!important}.view-preview .scratchpad-preview-pane{flex-direction:column;flex:1;width:100%;display:flex;overflow-y:auto}.scratchpad-editor-pane{background-color:var(--sl-color-bg,#fff);height:100%}.scratchpad-quick-toolbar{background-color:var(--sl-color-bg-nav,#00000005);border-bottom:1px solid var(--sl-color-hairline,#0000000f);scrollbar-width:none;flex-shrink:0;align-items:center;gap:.25rem;padding:.4rem .75rem;display:flex;overflow-x:auto}.scratchpad-quick-toolbar::-webkit-scrollbar{display:none}.scratchpad-tool-btn{min-height:1.75rem;color:var(--sl-color-gray-2,#475569);cursor:pointer;white-space:nowrap;background:0 0;border:1px solid #0000;border-radius:4px;justify-content:center;align-items:center;padding:0 .45rem;font-size:.8rem;font-weight:500;transition:all .15s;display:inline-flex}.scratchpad-tool-btn:hover{background-color:var(--sl-color-gray-6,#0000000d);border-color:var(--sl-color-hairline,#0000001a)}.scratchpad-tool-divider{background-color:var(--sl-color-hairline,#00000026);flex-shrink:0;width:1px;height:1.1rem;margin:0 .2rem}.scratchpad-textarea-wrap{flex:1;min-height:0;display:flex;position:relative}.scratchpad-textarea{resize:none;width:100%;height:100%;color:var(--sl-color-text,#1e293b);font-family:var(--font-mono,ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace);box-sizing:border-box;tab-size:2;background-color:#0000;border:none;outline:none;flex:1;padding:1.25rem 1.5rem;font-size:.95rem;line-height:1.65}.scratchpad-statusbar{background-color:var(--sl-color-bg-nav,#00000005);border-top:1px solid var(--sl-color-hairline,#0000000f);height:1.85rem;color:var(--sl-color-gray-3,#64748b);flex-shrink:0;justify-content:space-between;align-items:center;padding:0 1rem;font-size:.76rem;display:flex}.scratchpad-stats-group{align-items:center;gap:.75rem;display:flex}.scratchpad-save-status{transition:opacity .2s}.scratchpad-save-status.is-saving{color:var(--sl-color-text-accent)}.scratchpad-preview-pane{background-color:var(--sl-color-bg,#fff);box-sizing:border-box;padding:2rem 2.5rem 6rem}.scratchpad-preview-container{width:100%;max-width:52rem;margin:0 auto}#blank-doc-article,.scratchpad-preview-pane .sl-markdown-content{font-size:var(--academic-font-size-body,1rem);color:var(--academic-color-ink,#111);letter-spacing:var(--academic-letter-spacing-body,normal);font-weight:var(--academic-font-weight-body,400);-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;text-rendering:optimizelegibility;font-kerning:normal;font-feature-settings:"chws" 1;font-family:var(--font-reading,var(--academic-font-body))!important;line-height:var(--academic-line-height-body,1.74)!important}#blank-doc-article 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1.5rem;display:flex}.scratchpad-modal-title{margin:0;font-size:1.15rem;font-weight:650}.scratchpad-modal-close-btn{width:2rem;height:2rem;color:var(--sl-color-gray-3,#64748b);cursor:pointer;background:0 0;border:none;border-radius:50%;justify-content:center;align-items:center;transition:background-color .15s;display:inline-flex}.scratchpad-modal-close-btn:hover{background-color:var(--sl-color-gray-6,#0000000f)}.scratchpad-modal-body{max-height:calc(85vh - 7rem);padding:1.25rem 1.5rem;overflow-y:auto}.scratchpad-modal-tip{color:var(--sl-color-gray-3,#64748b);margin:0 0 1rem;font-size:.86rem;line-height:1.5}.scratchpad-template-grid{grid-template-columns:repeat(auto-fit,minmax(250px,1fr));gap:1rem;display:grid}.scratchpad-tpl-card{border:1px solid var(--sl-color-hairline,#0000001f);cursor:pointer;background-color:var(--sl-color-bg,#fff);text-align:left;border-radius:10px;flex-direction:column;justify-content:space-between;padding:1rem 1.25rem;transition:all 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print{@page{margin:1.5cm;size:auto}.scratchpad-topbar,.scratchpad-meta-panel,.scratchpad-editor-pane,.scratchpad-statusbar,.scratchpad-quick-toolbar,.scratchpad-modal-overlay,.scratchpad-toc-popup,.scratchpad-trans-drawer,.trans-inline-toolbar,.scratchpad-toast,.blank-page-sideload-aside,.custom-page-sidebar,#astro-overlay-root,nav,header,footer{display:none!important}html,body,.scratchpad-page-body,.blank-page-shell,.blank-page-main,.scratchpad-container,.scratchpad-main-workspace{color:#000!important;width:100%!important;height:auto!important;min-height:auto!important;max-height:none!important;box-shadow:none!important;background:#fff!important;border:none!important;margin:0!important;padding:0!important;display:block!important;position:static!important;overflow:visible!important}.scratchpad-preview-pane{background:0 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.ex-chip-trailing-trigger{vertical-align:middle!important;width:18px!important;min-width:18px!important;height:18px!important;min-height:18px!important;color:var(--md-sys-color-primary)!important;cursor:pointer!important;border-radius:50%!important;flex-shrink:0!important;justify-content:center!important;align-items:center!important;margin-left:2px!important;padding:0!important;line-height:1!important;transition:background-color .15s,color .15s!important;display:inline-flex!important}html[data-site-theme=material-you] .ex-chip-trailing-trigger:hover,html[data-site-theme=material-you] .ex-chip-trailing-trigger:focus-visible{background-color:var(--md-sys-color-surface-container-highest,#79747e29)!important}html[data-site-theme=material-you] 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