@font-face{font-family:Inter Variable;font-style:normal;font-weight:100 900;font-display:swap;src:url(/assets/inter-latin-standard-normal-BwkfbSeq.woff2)format("woff2-variations")}@font-face{font-family:Inter Variable;font-style:italic;font-weight:100 900;font-display:swap;src:url(/assets/inter-latin-standard-italic-BbqH_2Ar.woff2)format("woff2-variations")}@font-face{font-family:EB Garamond Variable;font-style:normal;font-weight:400 800;font-display:swap;src:url(/assets/eb-garamond-latin-wght-normal-CRpggXlh.woff2)format("woff2-variations")}@font-face{font-family:EB Garamond Variable;font-style:italic;font-weight:400 800;font-display:swap;src:url(/assets/eb-garamond-latin-wght-italic-AvGrCMCN.woff2)format("woff2-variations")}:root{--diagram-bg:var(--surface);--diagram-ink:var(--text);--diagram-muted:var(--muted);--diagram-border:var(--border);--diagram-accent:var(--accent);--diagram-accent-bg:var(--accent-soft);--diagram-accent-fill:var(--border);--diagram-accent-light:var(--surface-muted);--diagram-green:#437461;--diagram-green-bg:#edf4ef;--diagram-green-stroke:#437461;--diagram-red:#ac5353;--diagram-red-bg:#f8eeee;--diagram-red-stroke:#ac5353;--diagram-red-text:#9a4242;--diagram-yellow:#976d34;--diagram-yellow-bg:#f8f2e7;--diagram-yellow-stroke:#976d34;--diagram-purple:#76648f;--diagram-purple-bg:#f2eef6;--diagram-neutral:var(--border);--diagram-neutral-light:var(--surface-muted);--diagram-white:var(--surface)}:root[data-theme=dark]{--diagram-bg:var(--surface);--diagram-ink:var(--text);--diagram-muted:var(--muted);--diagram-border:var(--border);--diagram-accent:var(--accent);--diagram-accent-bg:var(--accent-soft);--diagram-accent-fill:var(--border);--diagram-accent-light:var(--surface-muted);--diagram-green:#91b7a3;--diagram-green-bg:#23382f;--diagram-green-stroke:#91b7a3;--diagram-red:#df9999;--diagram-red-bg:#3b292b;--diagram-red-stroke:#df9999;--diagram-red-text:#df9999;--diagram-yellow:#c8aa76;--diagram-yellow-bg:#393226;--diagram-yellow-stroke:#c8aa76;--diagram-purple:#b3a1cd;--diagram-purple-bg:#302b3a;--diagram-neutral:var(--border);--diagram-neutral-light:var(--surface);--diagram-white:var(--surface)}.prose :is(.handbook-diagram,.mermaid-diagram),.token-bucket .bucket-frame{border:1px solid var(--border);background:var(--surface);border-radius:12px;margin-block:28px;padding:24px;overflow-x:auto}.prose .diagram-svg{width:100%;height:auto;font-family:var(--font);margin:0 auto;font-weight:450;display:block}.prose .handbook-diagram>svg{min-width:min(100%,560px)}.prose .diagram-svg text{font-family:var(--font)}.prose figcaption{color:var(--muted);text-align:left;margin-top:14px;font-size:12px;line-height:1.7}.prose :is(.walkthrough,.pool-budget){background:var(--surface);border-radius:12px}@media (max-width:640px){.prose :is(.handbook-diagram,.mermaid-diagram){padding:14px 10px}.prose .handbook-diagram>svg{min-width:480px;max-width:none}}@media print{.prose :is(.handbook-diagram,.mermaid-diagram){break-inside:avoid;overflow:visible}.prose .handbook-diagram>svg{min-width:0;max-width:100%}}:root{--bg:#fafafa;--surface:#fff;--surface-muted:#f1f1f1;--text:#171717;--secondary-text:#525252;--muted:#8f8f8f;--border:#ebebeb;--accent:#171717;--accent-soft:#f0f1f3;--reading-size:14px;--reading-line-height:calc(var(--reading-size) * 1.46429);--font-serif:"EB Garamond Variable", Georgia, serif;--font-mono:ui-monospace, "SF Mono", SFMono-Regular, Menlo, Consolas, monospace;--font:"Inter Variable", system-ui, -apple-system, sans-serif;font-family:var(--font);color:var(--text);background:var(--bg);--lightningcss-light:initial;--lightningcss-dark: ;color-scheme:light;font-synthesis:none;text-rendering:optimizelegibility;-webkit-font-smoothing:antialiased}:root[data-theme=dark]{--bg:#15171c;--surface:#191c23;--surface-muted:#20242d;--text:#e8ebf1;--secondary-text:#b8bec8;--muted:#a3adbc;--border:#303640;--accent:#e0e4eb;--accent-soft:#252931;--lightningcss-light: ;--lightningcss-dark:initial;color-scheme:dark}*{box-sizing:border-box}body{font-optical-sizing:auto;-moz-osx-font-smoothing:grayscale;margin:0;font-size:14px;font-weight:450;line-height:20.5px}a{color:inherit;text-decoration:none}button,input,select{font:inherit}button{cursor:pointer}button:disabled{cursor:default}button,a,summary,input{touch-action:manipulation}button{color:inherit}svg{flex-shrink:0}button svg,.text-link svg{width:18px;height:18px}button{background:0 0;border:0}a:focus-visible,button:focus-visible,summary:focus-visible,[tabindex]:focus-visible{outline:2px solid var(--accent);outline-offset:4px;border-radius:4px}::selection{background:var(--accent-soft);color:var(--accent)}html{scroll-padding-top:90px}h1,h2,h3,p{margin-top:0}h1,h2,h3{letter-spacing:-.035em}kbd{color:var(--muted);border:1px solid var(--border);border-radius:4px;padding:2px 5px;font-family:inherit;font-size:11px}.sr-only{clip:rect(0, 0, 0, 0);white-space:nowrap;border:0;width:1px;height:1px;margin:-1px;padding:0;position:absolute;overflow:hidden}.skip-link{z-index:100;background:var(--accent);color:var(--bg);padding:12px;position:fixed;top:8px;left:8px;transform:translateY(-150%)}.skip-link:focus{transform:none}.site-header{border-bottom:1px solid var(--border);background:var(--bg);z-index:20;align-items:center;gap:52px;height:72px;padding:0 36px;display:flex;position:sticky;top:0}.brand{letter-spacing:-.045em;white-space:nowrap;align-items:center;gap:10px;font-size:18px;font-weight:650;display:flex}.brand-icon{color:#fff;background:#2459c7;border-radius:7px;place-items:center;width:30px;height:30px;display:grid}.brand-icon svg{width:19px;height:19px}.header-nav{color:var(--muted);gap:28px;font-size:14px;font-weight:500;display:flex}.header-nav a:hover{color:var(--text)}.header-actions{align-items:center;gap:10px;margin-left:auto;display:flex}.search-trigger{background:var(--surface-muted);border:1px solid var(--border);min-width:230px;color:var(--muted);border-radius:7px;align-items:center;gap:10px;padding:8px 12px;font-size:13px;display:flex}.icon-button{width:36px;height:36px;color:var(--muted);border-radius:6px;place-items:center;display:grid}.icon-button:hover{background:var(--surface-muted);color:var(--text)}.mobile-menu{display:none}.button-primary,.button-secondary{white-space:nowrap;border-radius:7px;justify-content:center;align-items:center;gap:12px;min-height:44px;padding:12px 18px;font-size:14px;font-weight:550;display:inline-flex}.button-secondary{border:1px solid var(--border);background:var(--surface);color:var(--text)}.button-secondary:hover{border-color:var(--accent)}.text-link{color:var(--accent);align-items:center;gap:10px;font-size:14px;font-weight:550;display:inline-flex}.home{max-width:1120px;margin:0 auto;padding:0 40px}.home-hero{padding:78px 0 70px}.eyebrow{letter-spacing:.11em;text-transform:uppercase;color:var(--accent);margin-bottom:24px;font-size:12px;font-weight:600}.home-hero h1{letter-spacing:-.055em;margin-bottom:24px;font-size:clamp(38px,5vw,62px);font-weight:620;line-height:1.1}.hero-description{color:var(--muted);max-width:620px;margin-bottom:30px;font-size:18px;line-height:1.7}.hero-actions{align-items:center;gap:26px;display:flex}.explore-section{scroll-margin-top:100px}.section-heading h2{margin-bottom:10px;font-size:25px;font-weight:600}.section-heading p{color:var(--muted);margin-bottom:28px;font-size:14px}.track-grid{grid-template-columns:repeat(4,minmax(0,1fr));gap:14px;display:grid}.track{border:1px solid var(--border);background:var(--surface);border-radius:9px;flex-direction:column;min-height:246px;padding:26px 23px;display:flex}.track-top{justify-content:space-between;align-items:center;margin-bottom:32px;display:flex}.track-top>svg{width:25px;height:25px;color:var(--accent)}.track-top>span{color:var(--muted);font-variant-numeric:tabular-nums;font-size:11px}.track h3{letter-spacing:-.025em;margin-bottom:10px;font-size:18px;font-weight:600}.track p{color:var(--muted);margin-bottom:24px;font-size:13px;line-height:1.7}.track-link{align-items:center;gap:8px;margin-top:auto;font-size:12px;font-weight:550;display:flex}.start-section{border-block:1px solid var(--border);grid-template-columns:1fr 1fr;gap:80px;margin:80px 0;padding:45px 0;display:grid}.small-label{color:var(--muted);font-size:12px}.start-section h2{margin:17px 0;font-size:32px;line-height:1.2}.start-section p{color:var(--muted);max-width:380px;font-size:15px;line-height:1.8}.request-map{align-self:center;margin:0;padding:0;list-style:none}.request-map li{align-items:center;gap:18px;padding:15px 0;display:flex}.request-number{border:1px solid var(--border);width:33px;height:33px;color:var(--accent);background:var(--accent-soft);border-radius:7px;place-items:center;font-size:12px;display:grid}.request-map strong{margin-bottom:5px;font-size:14px;font-weight:550;display:block}.request-map li>div>span{color:var(--muted);font-size:12px}.request-arrow{color:var(--muted);margin-left:auto;transform:rotate(90deg)}.quick-links{grid-template-columns:1fr 1fr;gap:60px;margin-bottom:72px;display:grid}.quick-links>a>span{color:var(--muted);font-size:12px}.quick-links h3{align-items:center;gap:16px;margin:12px 0;font-size:20px;display:flex}.quick-links h3 svg{color:var(--accent)}.quick-links p{color:var(--muted);font-size:14px;line-height:1.7}.home-footer{border-top:1px solid var(--border);color:var(--muted);justify-content:space-between;padding:26px 0;font-size:12px;display:flex}.reading-layout{grid-template-columns:260px minmax(0,790px) 220px;gap:50px;max-width:1460px;margin:0 auto;padding:0 32px;display:grid}.sidebar{border-right:1px solid var(--border);scrollbar-width:thin;scrollbar-color:var(--border) transparent;height:calc(100dvh - 72px);padding:30px 16px 24px 0;position:sticky;top:72px;overflow:auto}.sidebar-home{color:var(--muted);align-items:center;gap:8px;margin-bottom:30px;font-size:12px;display:flex}.nav-tree{margin:0;padding:0;list-style:none}.nav-tree>li{margin:4px 0}.nav-tree a{color:var(--muted);border-radius:5px;justify-content:space-between;align-items:center;gap:6px;padding:8px 10px;font-size:12px;line-height:1.6;display:flex}.nav-tree a:hover{background:var(--surface-muted);color:var(--text)}.nav-tree a[aria-current=page]{background:var(--accent-soft);color:var(--accent);font-weight:550}.nav-tree a svg{width:13px;height:13px;color:var(--accent)}.nav-tree summary{cursor:pointer;justify-content:space-between;align-items:center;gap:12px;padding:10px;font-size:13px;font-weight:550;list-style:none;display:flex}.nav-tree summary::-webkit-details-marker{display:none}.nav-tree summary svg{width:13px;height:13px;color:var(--muted)}.nav-tree details[open]>summary svg{transform:rotate(180deg)}.nav-tree details>.nav-tree{border-left:1px solid var(--border);margin:0 0 10px 10px;padding-left:7px}.nav-tree details>.nav-tree summary{font-size:12px;font-weight:500}.sidebar-footer{color:var(--muted);border-top:1px solid var(--border);margin:35px 10px 0;padding-top:20px;font-size:11px}.reading-main{min-width:0;padding:48px 0 30px}.breadcrumb{color:var(--muted);gap:10px;margin-bottom:28px;font-size:11px;display:flex}.breadcrumb a:hover{color:var(--accent)}.article-description{color:var(--muted);margin-bottom:20px;font-size:17px;line-height:1.7}.article-meta{color:var(--muted);border-bottom:1px solid var(--border);align-items:center;gap:10px;margin-bottom:34px;padding-bottom:26px;font-size:11px;display:flex}.bookmark-button{align-items:center;gap:7px;margin-left:auto;padding:5px 0;font-size:11px;display:flex}.bookmark-button:hover,.bookmark-button[aria-pressed=true]{color:var(--accent)}.bookmark-button svg{width:14px;height:14px}.article-toc{display:none}.article-completion{border-block:1px solid var(--border);justify-content:space-between;align-items:center;gap:20px;margin-top:55px;padding:26px 0;display:flex}.article-completion strong{font-size:14px;font-weight:550}.article-completion p{color:var(--muted);margin:7px 0 0;font-size:12px}.is-complete{color:var(--accent);background:var(--accent-soft)}.article-pagination{grid-template-columns:1fr 1fr;gap:24px;margin-top:30px;display:grid}.article-pagination a{border:1px solid var(--border);border-radius:7px;padding:18px 20px}.article-pagination a:hover{border-color:var(--accent)}.article-pagination span{color:var(--muted);align-items:center;gap:6px;margin-bottom:9px;font-size:11px;display:flex}.article-pagination strong{font-size:13px;font-weight:550;line-height:1.5}.article-pagination a:last-child{text-align:right}.article-pagination a:last-child span{justify-content:flex-end}.article-footer{color:var(--muted);text-align:center;margin-top:45px;font-size:11px}.prose{font-size:var(--reading-size);line-height:var(--reading-line-height);overflow-wrap:break-word}.prose>:first-child{margin-top:0}.prose p{margin:0 0 12px}.prose h2{font-size:1em;line-height:inherit;margin:72px 0 20px;font-weight:550}.prose h3{font-size:1em;line-height:inherit;margin:28px 0 12px;font-weight:550}.prose h4{margin:1.6em 0 .7em;font-size:1em}.prose a{color:var(--accent);text-decoration:underline;-webkit-text-decoration-color:color-mix(in srgb, var(--accent) 30%, transparent);text-decoration-color:color-mix(in srgb, var(--accent) 30%, transparent);text-underline-offset:3px}.prose a:hover{-webkit-text-decoration-color:var(--accent);text-decoration-color:var(--accent)}.prose :is(ul,ol){margin:12px 0;padding-left:1.4em}.prose li{margin:6px 0;padding-left:.25em}.prose li>p{margin:.4em 0}.prose strong{font-weight:550}.prose code{border:1px solid var(--border);background:var(--surface-muted);border-radius:4px;padding:2px 5px;font-family:ui-monospace,SFMono-Regular,Consolas,monospace;font-size:12.5px}.prose pre{border:1px solid var(--border);background:var(--surface-muted);border-radius:7px;max-width:100%;margin:20px 0;padding:14px 16px;font-size:12px;line-height:19px;overflow-x:auto}.prose pre code{font-size:inherit;background:0 0;border:0;padding:0}.prose .code-block{margin:1.6em 0;position:relative}.prose .code-block pre{margin:0;padding-top:38px}.copy-code{border:1px solid var(--border);background:var(--surface);color:var(--muted);border-radius:4px;padding:3px 8px;font-size:10px;line-height:1.6;position:absolute;top:8px;right:10px}.prose .shiki,.prose .shiki span{color:var(--shiki-light);background-color:var(--shiki-light-bg)}:root[data-theme=dark] .prose .shiki,:root[data-theme=dark] .prose .shiki span{color:var(--shiki-dark);background-color:var(--shiki-dark-bg)}.prose img{border-radius:5px;max-width:100%;height:auto;margin:1.6em auto;display:block}.prose svg{max-width:100%;height:auto}.prose figure{margin:1.6em 0}.prose blockquote{border-left:3px solid var(--accent);color:var(--muted);margin:1.6em 0;padding:5px 0 5px 22px}.prose blockquote p:last-child{margin-bottom:0}.table-scroll{margin:1.6em 0;overflow-x:auto}.prose table{border-collapse:collapse;width:100%;font-size:.8em;line-height:1.7}.prose th,.prose td{text-align:left;border-bottom:1px solid var(--border);vertical-align:top;padding:12px 16px}.prose th{background:var(--surface-muted);font-weight:600}.prose hr{border:0;border-top:1px solid var(--border);margin:2em 0}.callout{border-left:3px solid var(--accent);background:var(--accent-soft);border-radius:0 6px 6px 0;margin:1.6em 0;padding:18px 22px;font-size:.9em}.prose .callout-title{color:var(--accent);margin-bottom:10px;font-size:.9em;font-weight:600}.callout>:last-child{margin-bottom:0}.callout-caution,.callout-danger{background:color-mix(in srgb, #b97818 8%, var(--surface));border-color:#b97818}.callout-caution .callout-title,.callout-danger .callout-title{color:#a1660b}.mermaid-diagram{border:1px solid var(--border);background:var(--surface);border-radius:7px;padding:20px;overflow-x:auto}.mermaid-diagram svg{min-width:360px;margin:auto;display:block}.mermaid-source{white-space:pre;font-size:11px}.dialog-overlay{z-index:40;background:#0f141e73;position:fixed;inset:0}.dialog-content{background:var(--surface);width:min(680px,100% - 32px);max-height:76dvh;color:var(--text);border:1px solid var(--border);z-index:50;border-radius:10px;padding:25px;position:fixed;top:12%;left:50%;overflow:auto;transform:translate(-50%);box-shadow:0 20px 80px #00000026}.dialog-heading{justify-content:space-between;align-items:center;gap:15px;display:flex}.dialog-heading h2{margin:0;font-size:20px;font-weight:600}.dialog-description{color:var(--muted);margin:12px 0 24px;font-size:13px;line-height:1.7}.preferences{z-index:60;background:var(--surface);border:1px solid var(--border);border-radius:8px;min-width:190px;padding:7px;box-shadow:0 8px 28px #0000001a}.preferences [role=menuitem]{cursor:pointer;border-radius:4px;outline:none;align-items:center;gap:12px;padding:9px 10px;font-size:13px;display:flex}.preferences [role=menuitem][data-highlighted]{background:var(--accent-soft);color:var(--accent)}.preferences [data-radix-collection-item] svg{width:15px;height:15px}.preferences [role=separator]{background:var(--border);height:1px;margin:6px 0}.preferences [role=group],.preferences [data-radix-menu-content]{color:var(--text)}.preferences>div:not([role]){color:var(--muted);padding:8px 10px;font-size:11px}.saved-list{margin:0;padding:0;list-style:none}.saved-list li{border-bottom:1px solid var(--border);align-items:center;gap:15px;padding:10px 0;display:flex}.saved-list a{flex:1;justify-content:space-between;align-items:center;gap:16px;padding:8px;font-size:14px;display:flex}.saved-list a:hover{color:var(--accent)}.empty-state{text-align:center;padding:30px 10px 45px}.empty-state svg{width:30px;height:30px;color:var(--muted)}.empty-state p{margin:15px 0 7px;font-size:17px}.empty-state span{color:var(--muted);font-size:13px}.mobile-navigation{background:var(--surface);z-index:50;width:min(360px,90vw);padding:20px;position:fixed;inset:0 auto 0 0;overflow-y:auto}.mobile-navigation .dialog-heading{margin-bottom:20px}.pagefind-ui{--pagefind-ui-primary:var(--accent);--pagefind-ui-text:var(--text);--pagefind-ui-background:var(--surface);--pagefind-ui-border:var(--border);--pagefind-ui-tag:var(--surface-muted);--pagefind-ui-font:var(--font);--pagefind-ui-border-radius:6px;--pagefind-ui-scale:.85}.not-found{max-width:800px;margin:0 auto;padding:100px 32px}.not-found h1{font-size:42px}.not-found p{color:var(--muted)}@media (min-width:1600px){.reading-layout{gap:64px}.reading-main{padding-top:60px}}@media (max-width:1250px){.reading-layout{grid-template-columns:230px minmax(0,760px);gap:40px}.article-toc{border:1px solid var(--border);border-radius:6px;margin-bottom:28px;padding:12px 16px;font-size:13px;display:block}.article-toc summary{cursor:pointer;justify-content:space-between;list-style:none;display:flex}.article-toc ul{margin:0;padding:12px 0 0;list-style:none}.article-toc li{color:var(--muted);padding:6px 0}.article-toc a:hover{color:var(--accent)}.track-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.track{min-height:220px}.track-top{margin-bottom:25px}.site-header{gap:35px;padding:0 26px}}@media (max-width:800px){.site-header{gap:16px;height:64px;padding:0 20px}.brand{font-size:16px}.brand-icon{width:27px;height:27px}.header-nav{display:none}.search-trigger{background:0 0;border:0;min-width:0;padding:8px}.search-trigger span,.search-trigger kbd{display:none}.header-actions{gap:2px}.mobile-menu{display:grid}.sidebar{display:none}.reading-layout{padding:0 24px;display:block}.reading-main{max-width:720px;margin:auto;padding-top:30px}.article-header h1{font-size:32px}.article-description{font-size:16px}.breadcrumb{margin-bottom:22px}.article-meta{gap:7px;font-size:10px}.bookmark-button{font-size:10px}.prose{font-size:var(--reading-size)}.prose pre{padding:17px;font-size:12px}.article-completion{align-items:flex-start}.article-completion .button-secondary{min-height:40px;padding:10px;font-size:12px}.article-pagination{gap:12px}.article-pagination a{padding:14px}.home{padding:0 24px}.home-hero{padding:52px 0}.home-hero h1{font-size:44px}.hero-description{font-size:16px}.hero-actions{flex-wrap:wrap;gap:20px}.start-section{gap:40px;margin:55px 0}.quick-links{gap:30px}.dialog-content{max-height:84dvh;top:8%}.home-footer{gap:20px}.desktop-break{display:none}}@media (max-width:520px){.home-hero h1{font-size:14px}.eyebrow{font-size:10px}.hero-actions{flex-direction:column;align-items:flex-start;gap:20px}.track-grid{gap:10px}.track{min-height:240px;padding:19px 16px}.track h3{font-size:16px}.track p{font-size:12px}.track-link{gap:5px;font-size:11px}.start-section{grid-template-columns:1fr;gap:30px;padding:32px 0}.request-map{max-width:100%}.quick-links{grid-template-columns:1fr;gap:24px}.home-footer{flex-direction:column;gap:10px}.reading-layout{padding:0 20px}.article-header h1{font-size:29px}.article-meta>span:nth-of-type(3){display:none}.article-completion{flex-direction:column;gap:16px}.article-pagination strong{font-size:12px}.article-pagination a{padding:12px}.dialog-content{padding:20px}.dialog-heading h2{font-size:18px}}@media (prefers-reduced-motion:reduce){*,:before,:after{scroll-behavior:auto!important;transition:none!important;animation:none!important}}:root[data-theme=dark] .callout-caution .callout-title,:root[data-theme=dark] .callout-danger .callout-title{color:#eabb70}.site-header{border-bottom:0;gap:40px;max-width:1080px;height:96px;margin-inline:auto;padding-inline:30px;position:relative}.brand-icon{color:var(--text);background:0 0;border-radius:0;width:22px;height:26px}.brand{letter-spacing:normal;gap:9px;font-size:14px;font-weight:550}.header-nav{gap:22px;font-size:12px}.search-trigger{background:0 0;border:0;min-width:0;padding-inline:8px;font-size:12px}.search-trigger kbd{margin-left:12px}.reading-layout{grid-template-columns:168px minmax(0,550px) 168px;gap:48px;max-width:1022px;padding:0 20px}.sidebar{border-right:0;height:calc(100dvh - 60px);padding:28px 0;top:30px}.sidebar-home{margin-bottom:27px;font-size:11px}.nav-tree summary{padding:8px 0;font-size:13px;font-weight:450}.nav-tree a{border-radius:0;padding:6px 10px;font-size:13px}.nav-tree a[aria-current=page]{color:var(--text);background:0 0;font-weight:550;position:relative}.nav-tree a[aria-current=page]:before{content:"";background:var(--text);width:2px;position:absolute;top:9px;bottom:9px;left:-8px}.nav-tree details>.nav-tree{margin:4px 0 9px 2px}.nav-tree details>.nav-tree summary{padding-left:10px}.sidebar-footer{border:0;margin-inline:0;padding-top:0;font-size:10px}.reading-main{padding-top:28px}.breadcrumb{margin-bottom:23px;font-size:11px}.article-header h1{letter-spacing:normal;margin-bottom:12px;font-size:14px;font-weight:550;line-height:20.5px}.article-description{color:var(--secondary-text);max-width:550px;font-size:14px;line-height:20.5px}.article-meta{border-bottom:0;margin-bottom:28px;padding-bottom:0}.article-toc{color:var(--muted);border:0;border-radius:0;margin:0 0 32px;padding:0;font-size:12px;display:block}.article-toc summary{cursor:pointer;align-items:center;gap:10px;list-style:none;display:inline-flex}.article-toc summary::-webkit-details-marker{display:none}.article-toc summary svg{width:13px;height:13px}.article-toc[open] summary svg{transform:rotate(180deg)}.article-toc ul{border-left:1px solid var(--border);margin:0;padding:12px 0 0 15px;list-style:none}.article-toc li{padding:5px 0}.prose{font-size:var(--reading-size);line-height:var(--reading-line-height)}.prose h2{margin-top:72px;font-size:1em;font-weight:550}.prose h3{font-size:1em;font-weight:550}.prose .code-block pre{background:var(--surface);border-radius:10px}.copy-code{background:0 0;border:0}.article-completion{margin-top:48px}.article-pagination a{background:var(--surface);border-radius:9px}.home{max-width:1020px}.home-hero{padding-top:54px}.home-hero h1{letter-spacing:normal;font-size:14px;font-weight:550;line-height:20.5px}.hero-description{font-size:14px;line-height:20.5px}.button-primary{color:#fff;background:#30343b}.button-primary:hover{background:#171a20}:root[data-theme=dark] .button-primary{color:#15171c;background:#e0e4eb}:root[data-theme=dark] .button-primary:hover{background:#fff}.track-top>svg{color:var(--muted)}.track{border-radius:10px}.track-0,.track-3{background:var(--surface)}.track:hover{border-color:var(--muted)}@media (min-width:1600px){.reading-layout{gap:72px}.reading-main{padding-top:28px}}@media (max-width:1250px){.reading-layout{grid-template-columns:168px minmax(0,550px);gap:48px;max-width:806px}}@media (max-width:800px){.site-header{background:var(--bg);border-bottom:1px solid var(--border);gap:12px;height:72px;padding-inline:24px;position:sticky;top:0}.search-trigger span,.search-trigger kbd{display:none}.reading-layout{padding-inline:24px;display:block}.reading-main{padding-top:30px}.article-header h1{font-size:14px}.prose{font-size:var(--reading-size)}.home-hero{padding-top:40px}}@media (max-width:520px){.site-header,.reading-layout{padding-inline:20px}.article-header h1,.home-hero h1{font-size:14px}.mermaid-diagram{padding:12px!important}}@media print{.site-header,.sidebar,.article-toc,.article-completion,.article-pagination,.article-footer,.copy-code{display:none!important}.reading-layout{padding:0;display:block}.reading-main{max-width:none;padding:0}.prose{font-size:11pt}.prose pre{white-space:pre-wrap}.prose a{color:inherit}.article-meta .bookmark-button{display:none}:root,:root[data-theme=dark]{--bg:#fff;--text:#000;--muted:#333;--surface:#fff;--surface-muted:#f5f5f5;--border:#ccc;--lightningcss-light:initial;--lightningcss-dark: ;color-scheme:light}.prose .shiki,.prose .shiki span{color:var(--shiki-light)!important;background:var(--shiki-light-bg)!important}}.prose{font-weight:450}.prose em{font-family:var(--font-serif);font-size:1.16em;font-weight:400;line-height:1}.prose blockquote{font-family:var(--font-serif);margin-block:26px;font-size:23px;font-weight:400;line-height:28px}.prose :is(code,kbd,pre){font-family:var(--font-mono)}.prose .learning-flow{background:var(--border);grid-template-columns:repeat(auto-fit,minmax(min(100%,13rem),1fr));gap:1px;padding:1px;list-style:none;display:grid}.prose .learning-flow>*{background:var(--surface);margin:0;padding:1rem}.prose .learning-flow a{font-weight:600;display:block}.prose .learning-flow p{margin:.5rem 0 0}.prose .walkthrough,.prose .pool-budget{border:1px solid var(--border);background:var(--surface-muted);border-radius:.5rem;margin-block:1.5rem;padding:1.25rem}.prose .walkthrough [hidden],.prose .pool-budget [hidden]{display:none!important}.prose .walkthrough-controls{flex-wrap:wrap;align-items:end;gap:.5rem;margin-bottom:1.25rem;display:flex}.prose .walkthrough-controls label{flex:100%;font-size:.875rem;font-weight:600}.prose :is(.walkthrough-controls,.pool-budget) :is(select,button,input){font:inherit;color:var(--text);background:var(--surface);border:1px solid var(--muted);border-radius:.25rem;max-width:100%;min-height:2.75rem;padding:.45rem .65rem}.prose .walkthrough-controls select{width:100%;margin-top:.35rem;display:block}.prose .walkthrough-controls button{cursor:pointer}.prose .walkthrough-controls button:disabled{opacity:.5;cursor:default}.prose :is(.walkthrough,.pool-budget) :focus-visible{outline:2px solid var(--accent);outline-offset:3px}.prose .walkthrough-steps{padding-inline-start:1.75rem}.prose .walkthrough-steps>li{padding-inline-start:.5rem}.prose .walkthrough-steps>li::marker{color:var(--accent);font-weight:700}.prose .walkthrough svg{max-width:100%;height:auto;margin-block:1rem;display:block}.walkthrough-status{clip-path:inset(50%);white-space:nowrap;width:1px;height:1px;padding:0;position:absolute;overflow:hidden}.prose .pool-budget form{grid-template-columns:repeat(auto-fit,minmax(min(100%,14rem),1fr));gap:1rem;display:grid}.prose .pool-budget label{gap:.3rem;font-size:.875rem;display:grid}.prose .pool-budget output{margin-top:1rem;font-weight:600;display:block}@media print{.prose .walkthrough [hidden]{display:block!important}.prose .walkthrough .walkthrough-steps>li[hidden]{display:list-item!important}.prose .walkthrough-controls{display:none}}.iso{--anatomy-page:#0b0b0b;--anatomy-card:#131313;--anatomy-text:#a3a3a3;--anatomy-strong:#e6e6e6;--anatomy-muted:#6e6e6e;--anatomy-paper:#131313;--anatomy-face:#1b1b1b;--anatomy-top:#1c1c1c;--anatomy-shade-0:#0f0f0f;--anatomy-shade-1:#121212;--anatomy-shade-2:#151515;--anatomy-shade-3:#181818;--anatomy-lit-top:#262626;--anatomy-lit-shade:#1d1d1d;--anatomy-hi:#d4d4d4;--anatomy-mid:#6a6a6a;--anatomy-lo:#3e3e3e;--anatomy-faint:#2a2a2a;--anatomy-lit:#fff;--anatomy-halo:#050505;--anatomy-halo-opacity:.9;--anatomy-dot:#e6e6e6;--anatomy-red:#ff6b6b;--anatomy-green:#6be0a0;--anatomy-blue:#6b9bff;--anatomy-weight:.6px;--anatomy-ease:cubic-bezier(.32,.72,0,1);--anatomy-mono:ui-monospace,"SF Mono",Menlo,Consolas,monospace;--anatomy-lift:inset 0 1px 0 0 #ffffff0a,inset 0 0 0 1px #ffffff06,0 0 0 1px #00000026,0 1px 1px -.5px #00000014,0 3px 3px -1.5px #00000014,0 6px 6px -3px #00000014,0 12px 12px -6px #00000014}.iso[data-theme=light]{--anatomy-page:#f2f2ef;--anatomy-card:#fbfbfa;--anatomy-text:#57575a;--anatomy-strong:#18181a;--anatomy-muted:#8c8c90;--anatomy-paper:#fbfbfa;--anatomy-face:#fff;--anatomy-top:#fff;--anatomy-shade-0:#dcdcd9;--anatomy-shade-1:#e5e5e2;--anatomy-shade-2:#ededea;--anatomy-shade-3:#f4f4f1;--anatomy-lit-top:#fff;--anatomy-lit-shade:#eeeeeb;--anatomy-hi:#26262a;--anatomy-mid:#8a8a8f;--anatomy-lo:#b4b4b8;--anatomy-faint:#d4d4d6;--anatomy-lit:#000;--anatomy-halo:#8a8a80;--anatomy-halo-opacity:.32;--anatomy-dot:#3a3a3e;--anatomy-red:#e5484d;--anatomy-green:#30a46c;--anatomy-blue:#3e63dd;--anatomy-lift:inset 0 1px 0 0 #fff,0 0 0 1px #0000000f,0 1px 1px -.5px #0000000a,0 3px 3px -1.5px #0000000a,0 6px 6px -3px #0000000a,0 12px 12px -6px #0000000a}.iso-svg{width:100%;height:auto;display:block;overflow:visible}.iso-svg path,.iso-svg circle{vector-effect:non-scaling-stroke}.iso-fill{fill:var(--anatomy-paper);stroke:none}.iso-solid[data-lit]>.iso-fill{fill:var(--anatomy-face)}.iso-shade,.iso-top{stroke:none}.iso-shade[data-shade="0"]{fill:var(--anatomy-shade-0)}.iso-shade[data-shade="1"]{fill:var(--anatomy-shade-1)}.iso-shade[data-shade="2"]{fill:var(--anatomy-shade-2)}.iso-shade[data-shade="3"]{fill:var(--anatomy-shade-3)}.iso-top{fill:var(--anatomy-top)}.iso-solid[data-lit]>.iso-top{fill:var(--anatomy-lit-top)}.iso-solid[data-lit]>.iso-shade{fill:var(--anatomy-lit-shade)}.iso-solid[data-seamless]>.iso-shade,.iso-solid[data-seamless]>.iso-top{stroke-width:.4px;stroke-linejoin:round}.iso-solid[data-seamless]>.iso-shade[data-shade="0"]{stroke:var(--anatomy-shade-0)}.iso-solid[data-seamless]>.iso-shade[data-shade="1"]{stroke:var(--anatomy-shade-1)}.iso-solid[data-seamless]>.iso-shade[data-shade="2"]{stroke:var(--anatomy-shade-2)}.iso-solid[data-seamless]>.iso-shade[data-shade="3"]{stroke:var(--anatomy-shade-3)}.iso-solid[data-seamless]>.iso-top{stroke:var(--anatomy-top)}.iso-solid[data-seamless][data-lit]>.iso-top{stroke:var(--anatomy-lit-top)}.iso-solid[data-seamless][data-lit]>.iso-shade{stroke:var(--anatomy-lit-shade)}.iso-solid[data-lit]>.iso-edge{stroke:var(--anatomy-lit)}.iso-halo{fill:var(--anatomy-halo);stroke:none;filter:blur(9px);opacity:var(--anatomy-halo-opacity);transform:translateY(3px)}.iso-line{fill:none;stroke:var(--anatomy-lo);stroke-width:var(--anatomy-weight);stroke-linecap:round;stroke-linejoin:round}.iso-line[data-tone=hi]{stroke:var(--anatomy-hi)}.iso-line[data-tone=mid]{stroke:var(--anatomy-mid)}.iso-line[data-tone=lo]{stroke:var(--anatomy-lo)}.iso-line[data-tone=faint]{stroke:var(--anatomy-faint)}.iso-line[data-tone=lit]{stroke:var(--anatomy-lit)}.iso-line[data-tone=red]{stroke:var(--anatomy-red)}.iso-line[data-tone=green]{stroke:var(--anatomy-green)}.iso-line[data-tone=blue]{stroke:var(--anatomy-blue)}.iso-line[data-dotted]{stroke-dasharray:.01 3.5;stroke-width:1px}.iso-line[data-dashed]{stroke-dasharray:3 3}.iso-line[data-flow]{stroke-dasharray:2 6}.iso-wire-end{fill:var(--anatomy-paper);stroke:var(--anatomy-lo);stroke-width:var(--anatomy-weight)}.iso-wire[data-tone=hi] .iso-wire-end{stroke:var(--anatomy-hi)}.iso-wire[data-tone=mid] .iso-wire-end{stroke:var(--anatomy-mid)}.iso-wire[data-tone=faint] .iso-wire-end{stroke:var(--anatomy-faint)}.iso-wire[data-tone=lit] .iso-wire-end{stroke:var(--anatomy-lit)}.iso-dots circle{fill:var(--anatomy-dot);stroke:none;opacity:.32}.iso-dots[data-tone=hi] circle{opacity:.85}.iso-dots[data-tone=mid] circle{opacity:.45}.iso-dots[data-tone=lo] circle{opacity:.22}.iso-dots[data-tone=faint] circle{opacity:.12}.iso-face-text{fill:var(--anatomy-mid);font-family:var(--anatomy-mono);letter-spacing:.04em}.iso-face-text[data-tone=hi]{fill:var(--anatomy-hi)}.iso-face-text[data-tone=lo]{fill:var(--anatomy-lo)}.iso-face-text[data-tone=faint]{fill:var(--anatomy-faint)}.tb-body{fill:var(--anatomy-shade-2);stroke:none}.tb-shine{fill:var(--anatomy-top);stroke:none}.tb-shade{fill:var(--anatomy-shade-0);stroke:none}.tb-ring{fill:none;stroke:var(--anatomy-lo);stroke-width:.45px;stroke-linecap:butt;stroke-linejoin:round}.tb-ring[data-tone=mid]{stroke:var(--anatomy-mid)}.tb-ring[data-tone=faint]{stroke:var(--anatomy-faint)}.tb-ring[data-tone=hi]{stroke:var(--anatomy-hi)}@keyframes iso-flow{to{stroke-dashoffset:-32px}}@keyframes iso-pulse{0%,to{opacity:.18}12%{opacity:1}40%{opacity:.18}}.iso-line[data-flow]{animation:1.6s linear infinite iso-flow}.iso-dots circle[data-pulse]{animation:1.6s step-end infinite iso-pulse;animation-delay:var(--pulse-at,0s)}.iso-figure{margin:32px 0 36px}.iso-plate{background:var(--anatomy-card);box-shadow:0 0 0 1px var(--anatomy-mid);--anatomy-paper:var(--anatomy-card);border-radius:0;padding:52px 24px;position:relative}.iso-plate-corners{pointer-events:none;position:absolute;inset:18px 20px}.iso-plate-corner{color:var(--anatomy-muted);font-family:var(--anatomy-mono);letter-spacing:.04em;white-space:nowrap;font-size:10.5px;line-height:1;position:absolute}.iso-plate-corner[data-corner=fig]{color:var(--anatomy-text);top:0;left:0}.iso-plate-corner[data-corner=title]{text-transform:uppercase;letter-spacing:.1em;top:0;right:0}.iso-plate-corner[data-corner=hint]{text-transform:uppercase;letter-spacing:.1em;bottom:0;left:0}.iso-plate-corner[data-corner=readout]{color:var(--anatomy-text);font-variant-numeric:tabular-nums;bottom:0;right:0}.iso-plate .iso-svg{margin:0 auto}.iso-legend{color:var(--anatomy-muted);gap:8px;margin-top:12px;font-size:13px;line-height:1.55;display:grid}.iso-keys{flex-wrap:wrap;gap:6px 18px;display:flex}.iso-key{align-items:center;gap:7px;display:inline-flex}.iso-swatch{flex:none;width:16px;height:10px;overflow:visible}.iso-swatch path{fill:none;stroke:var(--anatomy-hi);stroke-width:1px;vector-effect:non-scaling-stroke;stroke-linejoin:round;stroke-linecap:round}.iso-swatch[data-mark=raised] path,.iso-swatch[data-mark=flat] path{stroke:var(--anatomy-mid)}.iso-swatch[data-mark=lit] path{stroke:var(--anatomy-lit)}.iso-swatch[data-mark=dim] path{stroke:var(--anatomy-lo)}.iso-swatch[data-mark=dotted] path{stroke-dasharray:.01 3;stroke-width:1.4px}.iso-swatch[data-mark=dashed] path{stroke-dasharray:3 2.5}.iso-swatch[data-mark=red] path{stroke:var(--anatomy-red)}.iso-swatch[data-mark=green] path{stroke:var(--anatomy-green)}.iso-swatch[data-mark=blue] path{stroke:var(--anatomy-blue)}.iso-swatch-crease{stroke:var(--anatomy-lo)!important}@media (max-width:560px){.iso-plate{padding:48px 12px 70px}.iso-plate-corner[data-corner=hint]{bottom:18px}}@media (prefers-reduced-motion:reduce){.iso-line[data-flow],.iso-dots circle[data-pulse]{animation:none}}.anatomy-figure.iso{--anatomy-paper:var(--surface);--anatomy-card:var(--surface);--anatomy-face:#fff;--anatomy-top:#fafbfc;--anatomy-shade-0:#d8dce1;--anatomy-shade-1:#e1e5e9;--anatomy-shade-2:#e9ecef;--anatomy-shade-3:#f2f4f6;--anatomy-lit-top:#505c6c;--anatomy-lit-shade:#374354;--anatomy-hi:#5f6b7c;--anatomy-mid:#8e98a6;--anatomy-lo:#b6bec9;--anatomy-faint:#d5dbe2;--anatomy-lit:#283547;--anatomy-halo:#bbc2cc;--anatomy-halo-opacity:.16;--anatomy-dot:#3a4658;color:var(--text);font:13px/1.65 var(--font);margin:30px 0}:root[data-theme=dark] .anatomy-figure.iso{--anatomy-face:#252d38;--anatomy-top:#2c3542;--anatomy-shade-0:#141a23;--anatomy-shade-1:#1a222d;--anatomy-shade-2:#222c38;--anatomy-shade-3:#2b3644;--anatomy-lit-top:#d5deea;--anatomy-lit-shade:#9facbf;--anatomy-hi:#aab9ce;--anatomy-mid:#72839b;--anatomy-lo:#4d5e75;--anatomy-faint:#354358;--anatomy-lit:#edf2f9;--anatomy-halo:#000;--anatomy-dot:#dce5f1}.prose .anatomy-frame.iso-plate{border:1px solid var(--border);box-shadow:none;background:var(--surface);border-radius:12px;padding:18px 20px 16px;overflow:hidden}.anatomy-heading,.anatomy-hint{color:var(--secondary-text);justify-content:space-between;align-items:baseline;gap:16px;font-size:11px;line-height:1.5;display:flex}.anatomy-heading strong{color:var(--text);text-align:right;font-size:13px;font-weight:550}.anatomy-heading>span{white-space:nowrap}.anatomy-hint [data-anatomy-readout]{color:var(--text);text-align:right}.prose .anatomy-stage svg{width:100%;min-width:0;max-width:none;height:auto;margin:0}.anatomy-stage{position:relative}.anatomy-stage [data-anatomy-part]{cursor:pointer}.anatomy-stage .iso-top,.anatomy-stage .iso-shade,.anatomy-stage .iso-edge{transition:fill .2s,stroke .2s}.anatomy-controls{align-items:center;gap:8px;margin-top:14px;display:flex}.anatomy-controls[hidden]{display:none}.anatomy-controls button,.anatomy-controls select{border:1px solid var(--border);background:var(--surface);min-height:40px;color:var(--text);font:12px var(--font);border-radius:6px;padding:8px 12px}.anatomy-controls label{flex:1;min-width:0}.anatomy-controls select{text-overflow:ellipsis;width:100%}.anatomy-controls button{flex-shrink:0}.anatomy-controls button:hover,.anatomy-controls select:hover{border-color:var(--secondary-text)}.anatomy-controls button[aria-pressed=true]{background:var(--text);color:var(--surface)}.prose .anatomy-explanation{margin:18px 0 0;padding-left:20px}.prose .anatomy-explanation li{margin:12px 0;padding-left:4px}.prose .anatomy-explanation strong{font-weight:550}.prose .anatomy-explanation p{color:var(--secondary-text);margin:4px 0 0;font-size:13px;line-height:1.7}.anatomy-figure[data-ready] .anatomy-explanation{padding-left:0;list-style:none}.anatomy-figure[data-ready] .anatomy-explanation li{padding-left:0}.anatomy-explanation [hidden]{display:none}.prose .anatomy-takeaway{color:var(--secondary-text);margin:14px 0 0;font-size:12px;line-height:1.65}.prose .anatomy-key{color:var(--secondary-text);background:0 0;border:0;border-radius:0;margin:12px 0 0;padding:0;font-size:11px}.prose .anatomy-key summary{cursor:pointer;padding:0}.prose .anatomy-key p{margin:8px 0 0;font-size:12px;line-height:1.7}@media (max-width:640px){.prose .anatomy-frame.iso-plate{padding:14px 12px 12px}.anatomy-heading strong{max-width:85%;font-size:12px}.anatomy-stage{width:114%;margin-left:-7%}.anatomy-hint{gap:8px;font-size:10px}.anatomy-controls{gap:5px}.anatomy-controls button,.anatomy-controls select{min-height:44px;padding:8px}}@media (prefers-reduced-motion:reduce){.anatomy-stage *{transition:none!important;animation:none!important}}@media print{.anatomy-figure{break-inside:avoid}.anatomy-controls,.anatomy-key{display:none!important}.anatomy-explanation [hidden]{display:list-item!important}.anatomy-figure[data-ready] .anatomy-explanation{padding-left:20px;list-style:decimal}}.anatomy-figure[data-focus="0"] [data-anatomy-part="0"] .iso-top{fill:var(--anatomy-lit-top)}.anatomy-figure[data-focus="0"] [data-anatomy-part="0"] .iso-shade{fill:var(--anatomy-lit-shade)}.anatomy-figure[data-focus="0"] [data-anatomy-part="0"] .iso-edge{stroke:var(--anatomy-lit)}.anatomy-figure[data-focus="1"] [data-anatomy-part="1"] .iso-top{fill:var(--anatomy-lit-top)}.anatomy-figure[data-focus="1"] [data-anatomy-part="1"] .iso-shade{fill:var(--anatomy-lit-shade)}.anatomy-figure[data-focus="1"] [data-anatomy-part="1"] .iso-edge{stroke:var(--anatomy-lit)}.anatomy-figure[data-focus="2"] [data-anatomy-part="2"] .iso-top{fill:var(--anatomy-lit-top)}.anatomy-figure[data-focus="2"] [data-anatomy-part="2"] .iso-shade{fill:var(--anatomy-lit-shade)}.anatomy-figure[data-focus="2"] [data-anatomy-part="2"] .iso-edge{stroke:var(--anatomy-lit)}.anatomy-figure[data-focus="3"] [data-anatomy-part="3"] .iso-top{fill:var(--anatomy-lit-top)}.anatomy-figure[data-focus="3"] [data-anatomy-part="3"] .iso-shade{fill:var(--anatomy-lit-shade)}.anatomy-figure[data-focus="3"] [data-anatomy-part="3"] .iso-edge{stroke:var(--anatomy-lit)}.anatomy-figure[data-focus="4"] [data-anatomy-part="4"] .iso-top{fill:var(--anatomy-lit-top)}.anatomy-figure[data-focus="4"] [data-anatomy-part="4"] .iso-shade{fill:var(--anatomy-lit-shade)}.anatomy-figure[data-focus="4"] [data-anatomy-part="4"] .iso-edge{stroke:var(--anatomy-lit)}.anatomy-figure[data-focus="5"] [data-anatomy-part="5"] .iso-top{fill:var(--anatomy-lit-top)}.anatomy-figure[data-focus="5"] [data-anatomy-part="5"] .iso-shade{fill:var(--anatomy-lit-shade)}.anatomy-figure[data-focus="5"] [data-anatomy-part="5"] .iso-edge{stroke:var(--anatomy-lit)}.anatomy-figure[data-focus="6"] [data-anatomy-part="6"] .iso-top{fill:var(--anatomy-lit-top)}.anatomy-figure[data-focus="6"] [data-anatomy-part="6"] .iso-shade{fill:var(--anatomy-lit-shade)}.anatomy-figure[data-focus="6"] [data-anatomy-part="6"] .iso-edge{stroke:var(--anatomy-lit)}
