:root{--reader-max-width: 720px;--reader-side-width: 220px;--reader-gap: 32px;--reader-mono: "JetBrains Mono", ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;--reader-heading-font: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;--reader-sidebar-collapsed: 52px}.collapsed-sidebar{position:fixed;top:0;left:0;bottom:0;width:var(--reader-sidebar-collapsed);background:var(--bg);border-right:1px solid var(--border);z-index:200;display:flex;flex-direction:column;align-items:center;padding:16px 0;transition:width .3s cubic-bezier(.4,0,.2,1),box-shadow .3s ease;overflow:hidden}.collapsed-sidebar:hover{width:260px;box-shadow:4px 0 24px #00000026}.collapsed-sidebar .sidebar-avatar{width:32px;height:32px;border-radius:50%;object-fit:cover;border:1px solid var(--border);flex-shrink:0;transition:width .3s,height .3s}.collapsed-sidebar:hover .sidebar-avatar{width:150px;height:150px}.collapsed-sidebar .sidebar-expanded-content{opacity:0;transition:opacity 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0;display:flex;justify-content:center}.reader-nav{display:flex;gap:1.25rem;align-items:center;width:100%;justify-content:space-between}.reader-nav-links{display:flex;gap:1.25rem;align-items:center;height:100%}.reader-nav-item{color:var(--text);text-decoration:none;font-weight:500;font-size:.9rem;position:relative;display:flex;align-items:center;height:100%;padding:0 .25rem;transition:color .15s}.reader-nav-item:hover{color:var(--link)}.reader-nav-item:hover:after,.reader-nav-item.active:after{content:"";position:absolute;bottom:-2px;left:0;width:100%;height:2px;background-color:var(--link)}.reader-nav-item.active{color:var(--link)}.reader-search-btn{display:flex;align-items:center;justify-content:center;width:28px;height:28px;border:1px solid var(--border);border-radius:6px;background:none;color:var(--text-muted);cursor:pointer;transition:all 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6rem;font-family:var(--reader-heading-font);font-size:15px;line-height:1.6;color:var(--text)}.reader-article h1{font-family:var(--reader-heading-font);font-size:2rem;font-weight:800;line-height:1.2;margin:0 0 .25rem;letter-spacing:-.02em}.reader-article .reader-meta{color:var(--text-muted);font-family:var(--reader-heading-font);font-size:.9rem;margin-bottom:2rem;padding-bottom:1.25rem;border-bottom:1px solid var(--border)}.reader-article .reader-meta .reader-tags{display:flex;gap:6px;flex-wrap:wrap;margin-top:8px}.reader-article .reader-meta .reader-tag{display:inline-block;padding:3px 12px;border-radius:99px;font-size:.78rem;font-weight:500;background:var(--bg-surface);color:var(--text-muted);border:1px solid var(--border);cursor:pointer;transition:all .15s;text-decoration:none}.reader-article .reader-meta .reader-tag:hover{color:var(--link);border-color:var(--link);background:var(--bg-card)}.reader-article .reader-meta .reader-meta-badges{display:flex;align-items:center;gap:8px;margin-top:8px}.reader-article .reader-meta .reader-diff-badge{font-size:.7rem;font-weight:600;text-transform:uppercase;letter-spacing:.04em;padding:2px 8px;border-radius:4px;border:1px solid}.reader-article .reader-meta .reader-read-time{font-size:.8rem;color:var(--text-muted)}.reader-article h2{font-family:var(--reader-heading-font);font-size:1.45rem;font-weight:700;margin:2.5rem 0 .8rem;letter-spacing:-.015em;scroll-margin-top:80px}.reader-article h3{font-family:var(--reader-heading-font);font-size:1.15rem;font-weight:600;margin:2rem 0 .6rem;scroll-margin-top:80px}.reader-article h4{font-family:var(--reader-heading-font);font-size:1rem;font-weight:600;margin:1.5rem 0 .5rem;scroll-margin-top:80px}.reader-article p{margin:0 0 .9rem}.reader-article a{color:var(--link);text-decoration:none;transition:color .15s}.reader-article a:hover{color:var(--link-hover);text-decoration:underline}.reader-article h2 a,.reader-article h3 a,.reader-article h4 a,.reader-article h2 a:hover,.reader-article h3 a:hover,.reader-article h4 a:hover{color:inherit;text-decoration:none}.reader-article a.wiki-link{text-decoration:none;border-bottom:none;color:var(--link)}.reader-article a.wiki-link:hover{text-decoration:underline;color:var(--link-hover)}.reader-article a.wiki-link-missing{color:var(--text-muted);text-decoration:underline dotted 1px;text-underline-offset:3px;cursor:help}.reader-article a.wiki-link-missing:after{content:"🚧";font-size:.75em;margin-left:.2em;opacity:.7;display:inline-block;vertical-align:baseline;text-decoration:none}.reader-article a.wiki-link-missing:hover{color:var(--text);text-decoration:underline dotted 1px}.uc-modal-overlay{position:fixed;inset:0;z-index:10002;display:flex;align-items:center;justify-content:center;background:#00000080;backdrop-filter:blur(4px);padding:1rem;animation:uc-fade-in .15s ease-out}@keyframes uc-fade-in{0%{opacity:0}to{opacity:1}}.uc-modal-card{width:100%;max-width:440px;padding:2rem;background:var(--bg);border:1px solid var(--border);border-radius:12px;text-align:center;box-shadow:0 10px 40px #00000040}.uc-modal-icon{font-size:2.5rem;line-height:1;margin-bottom:.75rem}.uc-modal-title{font-size:1.15rem;font-weight:700;margin:0 0 .5rem;color:var(--text)}.uc-modal-target{font-family:var(--mono, ui-monospace, SFMono-Regular, monospace);font-size:.85rem;color:var(--text-muted);background:var(--surface, rgba(128, 128, 128, .08));padding:2px 8px;border-radius:4px;display:inline-block;margin-bottom:.75rem;word-break:break-all}.uc-modal-text{font-size:.9rem;color:var(--text-muted);line-height:1.5;margin:0 0 1.5rem}.uc-modal-actions{display:flex;gap:10px;justify-content:center;flex-wrap:wrap}.uc-modal-btn{padding:10px 20px;border-radius:6px;font-size:.9rem;font-weight:600;cursor:pointer;font-family:inherit;text-decoration:none;border:1px solid var(--border);background:none;color:var(--text-muted)}.uc-modal-btn:hover{border-color:var(--text-muted);color:var(--text);text-decoration:none}.uc-modal-btn-primary{background:var(--link);color:var(--bg);border-color:var(--link)}.uc-modal-btn-primary:hover{opacity:.9;color:var(--bg);border-color:var(--link)}.reader-article .citation-group{white-space:nowrap}.reader-article a.citation-link,.reader-article a.cite-ref,.reader-article sup a[href^="#ref-"]{color:var(--text);font-size:.88em;text-decoration:none;border:none;font-weight:500;vertical-align:baseline;transition:color .15s}.reader-article a.citation-link:hover,.reader-article a.cite-ref:hover,.reader-article sup a[href^="#ref-"]:hover{color:var(--link)}.reader-article blockquote{margin:1.5rem 0;padding:1rem 1.25rem;border-left:3px solid var(--border-hover);background:var(--bg-surface);border-radius:0 6px 6px 0;font-style:italic}.reader-article blockquote p:last-child{margin-bottom:0}.reader-article .callout{margin:1.5rem 0;padding:0;border-radius:6px;border-left:3px solid;overflow:hidden}.reader-article .callout-title{font-family:var(--reader-heading-font);font-weight:600;font-size:.85rem;padding:10px 16px 8px;text-transform:uppercase;letter-spacing:.04em;display:flex;align-items:center;gap:6px}.reader-article .callout-icon{font-size:14px;line-height:1;flex-shrink:0}.reader-article .callout-content{padding:0 16px 12px;font-size:.95em}.reader-article .callout-content p:last-child{margin-bottom:0}.reader-article .callout[data-callout-color=blue]{border-color:#378add;background:#378add0a}.reader-article .callout[data-callout-color=blue] .callout-title{color:#185fa5}.reader-article .callout[data-callout-color=teal]{border-color:#1d9e75;background:#1d9e750a}.reader-article .callout[data-callout-color=teal] .callout-title{color:#0f6e56}.reader-article .callout[data-callout-color=green]{border-color:#639922;background:#6399220a}.reader-article .callout[data-callout-color=green] .callout-title{color:#3b6d11}.reader-article .callout[data-callout-color=amber]{border-color:#ba7517;background:#ba75170a}.reader-article .callout[data-callout-color=amber] .callout-title{color:#854f0b}.reader-article .callout[data-callout-color=red]{border-color:#e24b4a;background:#e24b4a0a}.reader-article .callout[data-callout-color=red] .callout-title{color:#a32d2d}.reader-article .callout[data-callout-color=coral]{border-color:#d85a30;background:#d85a300a}.reader-article .callout[data-callout-color=coral] .callout-title{color:#993c1d}.reader-article .callout[data-callout-color=purple]{border-color:#7f77dd;background:#7f77dd0a}.reader-article .callout[data-callout-color=purple] .callout-title{color:#534ab7}.reader-article .callout[data-callout-color=gray]{border-color:#888780;background:#8887800a}.reader-article .callout[data-callout-color=gray] .callout-title{color:#5f5e5a}:root:not(.light-theme) .reader-article .callout[data-callout-color=blue]{background:#378add14}:root:not(.light-theme) .reader-article .callout[data-callout-color=blue] .callout-title{color:#85b7eb}:root:not(.light-theme) .reader-article .callout[data-callout-color=teal]{background:#1d9e7514}:root:not(.light-theme) .reader-article .callout[data-callout-color=teal] .callout-title{color:#5dcaa5}:root:not(.light-theme) .reader-article .callout[data-callout-color=green]{background:#63992214}:root:not(.light-theme) .reader-article .callout[data-callout-color=green] .callout-title{color:#97c459}:root:not(.light-theme) .reader-article .callout[data-callout-color=amber]{background:#ba751714}:root:not(.light-theme) .reader-article .callout[data-callout-color=amber] .callout-title{color:#ef9f27}:root:not(.light-theme) .reader-article .callout[data-callout-color=red]{background:#e24b4a14}:root:not(.light-theme) .reader-article .callout[data-callout-color=red] .callout-title{color:#f09595}:root:not(.light-theme) .reader-article 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.callout-foldable .callout-content{display:none;padding-top:8px}.reader-article .callout-foldable.expanded .callout-content{display:block}.reader-article .callout-foldable .callout-visible{padding:0 16px 8px;font-size:.95em}.reader-article .callout-foldable .callout-visible p:last-child{margin-bottom:0}.reader-article img{max-width:100%;height:auto;border-radius:6px;margin:1.5rem 0}.reader-article figure{margin:2rem 0}.reader-article figure:not([data-rehype-pretty-code-figure]){text-align:center}.reader-article figcaption{font-family:var(--reader-heading-font);font-size:.85rem;color:var(--text-muted);margin-top:8px;font-style:italic}.reader-article ul,.reader-article ol{padding-left:1.5rem;margin:0 0 1.1rem}.reader-article li{margin-bottom:.4rem}.reader-article li>ul,.reader-article li>ol{margin:.3rem 0 0}.reader-article table{width:100%;border-collapse:collapse;margin:1.5rem 0;font-size:.9rem}.reader-article th,.reader-article td{padding:10px 14px;text-align:left;border-bottom:1px solid var(--border)}.reader-article th{font-weight:600;font-size:.8rem;text-transform:uppercase;letter-spacing:.04em;color:var(--text-muted)}.reader-article hr{border:none;border-top:1px solid var(--border);margin:2.5rem 0}.reader-article code{font-family:var(--reader-mono);font-size:.85em}.reader-article :not(pre)>code{padding:2px 6px;border-radius:4px;background:var(--bg-surface);border:1px solid var(--border);font-size:.82em}.reader-article figure[data-rehype-pretty-code-figure]{margin:1.5rem 0;position:relative}.reader-article pre{padding:1.25rem 1.5rem;border-radius:8px;border:1px solid var(--border);overflow-x:auto;line-height:1.6;font-size:.85rem;position:relative;text-align:left}.reader-article pre:not([data-theme]){background:var(--bg-surface)}.reader-article pre[data-theme]{background-color:var(--shiki-dark-bg)!important;color:var(--shiki-dark)}.reader-article pre[data-theme] code span{color:var(--shiki-dark)}:root.light-theme .reader-article pre[data-theme]{background-color:var(--shiki-light-bg, #f6f8fa)!important;color:var(--shiki-light)}:root.light-theme .reader-article pre[data-theme] code span{color:var(--shiki-light)!important}.reader-article figure[data-rehype-pretty-code-figure]>figcaption{font-family:var(--reader-mono);font-size:.7rem;font-style:normal;color:var(--text-muted);background:var(--border);padding:4px 12px;border-radius:8px 8px 0 0;display:block;width:fit-content;line-height:1.2;margin:0 0 -1px;position:relative;z-index:1}.reader-article figure[data-rehype-pretty-code-figure]>figcaption+pre{margin-top:0!important;border-top-left-radius:0}.reader-article pre code>[data-line]:before{display:none}.reader-article pre code>[data-highlighted-line]{background:var(--link)10;border-left:2px solid var(--link);margin-left:-1.5rem;margin-right:-1.5rem;padding-left:calc(1.5rem - 2px);padding-right:1.5rem}.reader-article pre .copy-button{position:absolute;top:8px;right:8px;background:var(--border);border:none;color:var(--text-muted);padding:4px 8px;border-radius:4px;font-size:.7rem;cursor:pointer;opacity:0;transition:opacity .15s;white-space:nowrap}.reader-article pre:hover .copy-button{opacity:1}.reader-article .katex{font-size:1em}.reader-article :not(.katex-display)>.katex{white-space:nowrap}.reader-article .katex-display{margin:1.25rem 0;padding:2px 0;position:relative;overflow-x:auto;overflow-y:hidden;scrollbar-width:thin;scrollbar-color:transparent transparent}.reader-article .katex-display:hover{scrollbar-color:var(--border) transparent}.reader-article .katex-display::-webkit-scrollbar{height:4px}.reader-article .katex-display::-webkit-scrollbar-track{background:transparent}.reader-article .katex-display::-webkit-scrollbar-thumb{background:transparent;border-radius:2px}.reader-article .katex-display:hover::-webkit-scrollbar-thumb{background:var(--border)}.reader-article .katex-display:hover::-webkit-scrollbar-thumb:hover{background:var(--text-muted)}.reader-article .katex-display>.katex{font-size:1.1em}.reader-article .katex-html{cursor:pointer}.reader-article :not(.katex-display)>.katex .katex-html:hover:after{content:"Click to copy TeX";position:absolute;top:-22px;right:0;font-family:var(--reader-heading-font);font-size:10px;color:var(--text-muted);background:var(--bg-card);padding:2px 8px;border-radius:4px;border:1px solid var(--border);pointer-events:none;white-space:nowrap;z-index:10}.reader-article .katex-display:hover:after{content:"Click to copy TeX";position:absolute;top:-2px;right:0;font-family:var(--reader-heading-font);font-size:10px;color:var(--text-muted);background:var(--bg-card);padding:2px 8px;border-radius:4px;border:1px solid var(--border);pointer-events:none;white-space:nowrap;z-index:10}.reader-right{padding-top:2rem}.reader-right-sticky{position:sticky;top:70px;max-height:calc(100vh - 80px);overflow-y:auto;scrollbar-width:thin;scrollbar-color:var(--border) transparent}.reader-backlinks{margin-top:24px}.reader-right-sticky>.reader-backlinks:first-child{margin-top:0}.reader-backlinks-title{font-size:11px;font-weight:600;text-transform:uppercase;letter-spacing:.06em;color:var(--text-muted);margin-bottom:8px;padding-bottom:8px;border-bottom:1px solid var(--border)}.reader-backlinks-list{list-style:none;padding:0;margin:0}.reader-backlinks-list li{margin-bottom:4px}.reader-backlinks-list a{font-size:13px;color:var(--link);text-decoration:none;display:block;padding:3px 8px;border-radius:4px;transition:all .15s}.reader-backlinks-list a:hover{background:color-mix(in srgb,var(--link) 8%,transparent);color:var(--link-hover)}.reader-footer{grid-column:1 / -1;text-align:center;padding:2rem 0;border-top:1px solid var(--border);font-size:.85rem;color:var(--text-muted)}.reader-view-toggle{display:inline-flex;align-items:center;gap:6px;padding:5px 12px;border:1px solid var(--border);border-radius:6px;background:none;color:var(--text-muted);font-size:12px;font-weight:500;cursor:pointer;font-family:inherit;transition:all .15s;white-space:nowrap}.reader-view-toggle:hover{border-color:var(--link);color:var(--link)}.reader-view-toggle.active{background:var(--bg-surface);color:var(--link);border-color:var(--link)}@media(max-width:1100px){:root{--reader-side-width: 180px;--reader-gap: 20px}}@media(max-width:900px){.reader-layout{grid-template-columns:var(--reader-side-width) 1fr;margin-left:0}.collapsed-sidebar,.reader-right{display:none}.reader-footer{grid-column:1 / -1}}@media(max-width:680px){.reader-layout{grid-template-columns:1fr;padding:0 16px}.reader-left{padding-top:0}.reader-left-sticky{position:static;max-height:none;border-bottom:1px solid var(--border);padding-bottom:12px;margin-bottom:12px}.reader-article{font-size:14px;padding:1rem 0 4rem;min-width:0;max-width:100%;overflow-wrap:break-word;word-wrap:break-word}.reader-article h1{font-size:1.6rem}.reader-article h2{font-size:1.25rem;margin:2rem 0 .6rem}.reader-article h3{font-size:1.05rem}.reader-layout .reader-header{padding:.65rem 0 .55rem;overflow-x:auto;overflow-y:hidden;-webkit-overflow-scrolling:touch;scrollbar-width:none}.reader-layout .reader-header::-webkit-scrollbar{display:none}.reader-nav{gap:.5rem;flex-wrap:nowrap;justify-content:flex-end;width:max-content;min-width:100%;box-sizing:border-box}.reader-view-toggle{display:none}.reader-nav-links{gap:.85rem;flex-wrap:nowrap;justify-content:flex-start;align-items:center}.reader-nav-item{font-size:.85rem;padding:.2rem .1rem;white-space:nowrap}.reader-search-btn{width:26px;height:26px;flex-shrink:0}.reader-article pre{padding:.85rem 1rem;font-size:.78rem;border-radius:6px}.reader-article table{display:block;overflow-x:auto;-webkit-overflow-scrolling:touch;max-width:100%}.reader-article th,.reader-article td{padding:8px 10px;font-size:.85rem}.reader-article .reader-meta .reader-tag{padding:2px 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