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div[data-type="footnotes-def"] > p, .vditor-ir div[data-type="footnotes-block"] > div[data-type="footnotes-def"] > blockquote, .vditor-ir div[data-type="footnotes-block"] > div[data-type="footnotes-def"] > pre, .vditor-ir div[data-type="footnotes-block"] > div[data-type="footnotes-def"] > table, .vditor-ir div[data-type="footnotes-block"] > div[data-type="footnotes-def"] > hr{margin-left:8px;}.vditor-ir .vditor-toc:before{content:"ToC";}.vditor-ir .vditor-toc span[data-type="toc-h"]{color:var(--theme-primary);text-decoration:underline;}@media screen and (max-width:520px){.vditor-ir h1:before, .vditor-ir h2:before, .vditor-ir h3:before, .vditor-ir h4:before, .vditor-ir h5:before, .vditor-ir h6:before, .vditor-ir div[data-type="link-ref-defs-block"]:before, .vditor-ir div[data-type="footnotes-block"]:before, .vditor-ir .vditor-toc:before{content:none;}}.vditor-sv{font-family:"Helvetica Neue", "Luxi Sans", "DejaVu Sans", "Hiragino Sans GB", "Microsoft Yahei", sans-serif, "Apple Color 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.language-mermaid svg tspan, .language-mermaid svg .label, .language-mermaid svg .nodeLabel, .language-mermaid svg .nodeLabel p, .language-mermaid svg .cluster-label text, .language-mermaid svg .actor, .language-mermaid svg .actor-box, .language-mermaid svg .messageText, .language-mermaid svg .loopText, .language-mermaid svg .labelText, .language-mermaid svg .noteText, .language-mermaid svg .stateText, .language-mermaid svg .classText, .language-mermaid svg .slice, .language-mermaid svg .legend text, .language-mermaid svg .pieTitleText, .language-mermaid svg .titleText, .language-mermaid svg .bar-title, .language-mermaid svg .tick text, .language-mermaid svg .classGroup .title, .language-mermaid svg .classGroup .members, .language-mermaid svg .classGroup .methods, .language-mermaid svg .transition text, .language-mermaid svg .stateGroup .label{fill:var(--theme-text-main) !important;color:var(--theme-text-main) !important;}.language-mermaid svg .edgeLabel span, .language-mermaid svg .edgeLabel p, .language-mermaid svg .edgeLabel text{fill:var(--theme-text-dim) !important;color:var(--theme-text-dim) !important;}.edgeLabel{display:inline-block !important;background:var(--theme-bg-card-solid) !important;border:1px solid var(--theme-border) !important;border-radius:12px !important;padding:2px 8px !important;min-width:30px !important;min-height:20px !important;white-space:nowrap !important;overflow:visible !important;box-shadow:0 1px 2px rgba(0,0,0,0.1) !important;}.edgeLabel span, .edgeLabel p{display:inline-block !important;white-space:nowrap !important;font-size:12px !important;background-color:transparent !important;}.language-mermaid svg .node rect, .language-mermaid svg .node circle, .language-mermaid svg .node polygon, .language-mermaid svg .node path, .language-mermaid svg .classGroup rect, .language-mermaid svg .stateGroup rect, .language-mermaid svg .actor{fill:var(--theme-bg-card-solid) !important;stroke:var(--theme-primary) !important;stroke-width:1.5px 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