:root:has(.learn) .bd-grain{display:none}.learn{--paper:#fff;--paper-ink:#14151a;--paper-ink-2:#4a4c58;--paper-rule:#e3e4ea;--paper-wash:#f4f5f8;--paper-link:#0b57d0;--paper-yellow:#ffe94d;--learn-rail-w:240px;--learn-aside-w:296px;--learn-r:10px}.learn-shell{grid-template-columns:minmax(0,1fr);display:grid}@media (min-width:1024px){.learn-shell{grid-template-columns:var(--learn-rail-w) minmax(0, 1080px);justify-content:center}.learn-rail{grid-row:1/span 3}.learn-main,.learn-aside,.learn-foot{grid-column:2}}@media (min-width:1280px){.learn-shell{grid-template-columns:var(--learn-rail-w) minmax(0, 1080px) var(--learn-aside-w)}.learn-rail{grid-row:1}.learn-aside{grid-area:1/3}.learn-foot{grid-area:2/2}}@media (min-width:1536px){.learn{--learn-rail-w:272px;--learn-aside-w:336px}}.learn-rail{border-bottom:1px solid var(--color-hairline);padding:14px 20px}.learn-rail-top{justify-content:space-between;align-items:center;gap:16px;min-height:44px;display:flex}.learn-rail-toggle{background:var(--color-surface-2);cursor:pointer;border-radius:8px;align-items:center;gap:8px;min-height:44px;padding:0 14px;font-size:1rem;font-weight:600;display:inline-flex}.learn-rail-toggle[aria-expanded=true] svg{rotate:180deg}.learn-rail-body{padding-top:16px;display:none}.learn-rail-body[data-open=true]{display:block}.learn-rail-group{margin-top:32px}.learn-rail-heading{color:var(--color-foreground);padding:0 10px 8px;font-size:1rem;font-weight:700}.learn-rail-heading a:hover,.learn-rail-heading a[aria-current]{text-underline-offset:4px;text-decoration:underline}.learn-rail-link{color:var(--color-foreground);border-radius:8px;align-items:baseline;gap:10px;padding:8px 10px;font-size:.9375rem;line-height:1.35;display:flex}.learn-rail-link.is-home{font-weight:600}a.learn-rail-link:hover{background:var(--color-fill-soft)}a.learn-rail-link[aria-current]{background:var(--color-surface-2);font-weight:600}.learn-rail-n{font-variant-numeric:tabular-nums;width:1.1em;color:var(--color-muted);flex:none;font-size:.8125rem}.learn-rail-link.is-planned{color:var(--color-muted)}.learn-rail-soon{color:var(--color-muted-deep);flex:none;margin-left:auto;font-size:.75rem}@media (min-width:1024px){.learn-rail{border-bottom:0;height:100dvh;padding:28px 12px 32px;position:sticky;top:0;overflow-y:auto}.learn-rail-top{padding:0 10px}.learn-rail-toggle{display:none}.learn-rail-body{padding-top:20px;display:block}}.learn-main{padding:12px 8px 24px}.learn-paper{border-radius:var(--learn-r);background:var(--paper);max-width:1040px;color:var(--paper-ink);margin-inline:auto;padding:36px 20px 64px}.learn-col{overflow-wrap:break-word;max-width:780px;margin-inline:auto}@media (min-width:640px){.learn-main{padding:24px 24px 32px}.learn-paper{border-radius:12px;padding:56px 48px 88px}}@media (min-width:1024px){.learn-main{padding:28px 20px 40px}.learn-paper{padding:64px 48px 104px}}@media (min-width:1280px) and (max-width:1439px){.learn-main{padding-inline:16px}.learn-paper{padding-inline:40px}}.learn-paper ::selection{background:var(--paper-yellow);color:var(--paper-ink)}.learn-paper :focus-visible{outline:3px solid var(--paper-link);outline-offset:3px;border-radius:4px}.learn-hl{color:inherit;background:linear-gradient(var(--paper-yellow), var(--paper-yellow)) no-repeat 0 58% / 100% .92em;-webkit-box-decoration-break:clone;box-decoration-break:clone;margin-inline:-.06em;padding-inline:.12em}.learn-h1 .learn-hl{background-position:0 62%;background-size:100% .82em}.learn-crumbs{color:var(--paper-ink-2);flex-wrap:wrap;gap:4px 8px;font-size:.9375rem;font-weight:500;display:flex}.learn-crumbs a:hover{color:var(--paper-ink);text-underline-offset:3px;text-decoration:underline}.learn-h1{letter-spacing:-.02em;text-wrap:balance;margin-top:16px;font-size:clamp(2.375rem,1.6rem + 3.4vw,4rem);font-weight:700;line-height:1.06}.learn-head>.learn-h1:first-child{margin-top:0}.learn-lede{color:var(--paper-ink-2);text-wrap:pretty;margin-top:24px;font-size:clamp(1.25rem,1.15rem + .5vw,1.5rem);line-height:1.45}.learn-byline{color:var(--paper-ink-2);align-items:center;gap:12px;margin-top:32px;font-size:.9375rem;line-height:1.4;display:flex}.learn-byline-name,.learn-byline-meta{display:block}.learn-byline strong{color:var(--paper-ink);font-weight:600}.learn-byline-photo{border-radius:999px;flex:none}.learn-def{text-wrap:pretty;margin-top:24px;font-size:clamp(1.375rem,1.2rem + .8vw,1.75rem);font-weight:600;line-height:1.35}.learn-def+.learn-lede{margin-top:16px;font-size:clamp(1.125rem,1.05rem + .4vw,1.3125rem)}.learn-ask{margin-top:24px}.learn-ask-title{color:var(--paper-ink);font-size:1rem;font-weight:650}.learn-ask ul{flex-wrap:wrap;gap:8px;margin-top:12px;display:flex}.learn-ask a{background:var(--paper-wash);color:var(--paper-ink);border-radius:8px;padding:10px 16px;font-size:.9375rem;font-weight:600;line-height:1.2;text-decoration:none;display:block}.learn-ask a:hover,.learn-ask a:focus-visible{background:var(--paper-ink);color:#fff}.learn-takeaways{border-radius:var(--learn-r);background:var(--paper-wash);margin-top:48px;padding:28px;position:relative;overflow:hidden}.learn-takeaways:before{content:"";background:linear-gradient(90deg, var(--rb-seq));height:4px;position:absolute;inset:0 0 auto}.learn-takeaways h2,.learn-toc h2{font-size:1.25rem;font-weight:700}.learn-takeaways ul{gap:12px;margin-top:16px;display:grid}.learn-takeaways li{gap:12px;font-size:1.125rem;line-height:1.5;display:flex}.learn-check{flex:none;margin-top:4px}.learn-toc{margin-top:48px}.learn-toc ol{counter-reset:toc;gap:8px 32px;margin-top:16px;display:grid}@media (min-width:640px){.learn-toc ol{grid-template-columns:1fr 1fr}}.learn-toc li{counter-increment:toc;gap:12px;font-size:1.0625rem;line-height:1.45;display:flex}.learn-toc li:before{content:counter(toc);font-variant-numeric:tabular-nums;width:1.2em;color:var(--paper-ink-2);flex:none}.learn-toc a{color:var(--paper-link)}.learn-toc a:hover{text-underline-offset:3px;text-decoration:underline}.learn-prose{font-size:1.125rem;line-height:1.7}@media (min-width:640px){.learn-prose{font-size:1.25rem}}.learn-prose section{margin-top:88px}.learn-prose h2{letter-spacing:-.02em;text-wrap:balance;scroll-margin-top:24px;font-size:clamp(1.875rem,1.5rem + 1.8vw,2.625rem);font-weight:700;line-height:1.1}.learn-prose h3{letter-spacing:-.01em;text-wrap:balance;margin-top:48px;font-size:clamp(1.375rem,1.25rem + .5vw,1.625rem);font-weight:650;line-height:1.2}.learn-prose p,.learn-prose ul,.learn-prose ol{margin-top:24px}.learn-prose .learn-table,.learn-prose .learn-callout,.learn-prose .learn-map,.learn-prose .learn-code{margin-block:32px}.learn-prose h3+p{margin-top:12px}.learn-prose p{text-wrap:pretty}.learn-prose strong{font-weight:650}.learn-prose a{color:var(--paper-link);text-underline-offset:3px;text-decoration:underline;text-decoration-thickness:1.5px}.learn-prose a:hover{text-decoration-thickness:2.5px}.learn-prose ul{padding-left:1.3em;list-style:outside}.learn-prose ol{padding-left:1.4em;list-style:decimal}.learn-prose li+li{margin-top:12px}.learn-prose li::marker{color:var(--paper-ink-2);font-weight:600}.learn-table{overflow-x:auto}.learn-table table{border-collapse:collapse;width:100%;min-width:520px;font-size:1.0625rem;line-height:1.45}.learn-table th{text-align:left;border-bottom:2px solid var(--paper-ink);font-size:.9375rem;font-weight:650}.learn-table th,.learn-table td{vertical-align:top;padding:14px 16px 14px 0}.learn-table tbody tr td{border-top:1px solid var(--paper-rule)}.learn-callout{border-radius:var(--learn-r);background:var(--paper-wash);padding:24px;font-size:1.0625rem;line-height:1.6}.learn-prose .learn-callout>*{margin-top:8px}.learn-prose .learn-callout>:first-child{margin-top:0}.learn-callout-title{align-items:center;gap:12px;font-size:1.125rem;font-weight:700;line-height:1.3;display:flex}.learn-callout-icon{background:var(--paper-ink);color:#fff;border-radius:8px;flex:none;place-items:center;width:32px;height:32px;display:grid}@media (max-width:639px){.learn-callout{padding:20px}}.learn-code{border-radius:var(--learn-r);background:var(--paper-wash);padding:24px}.learn-code figcaption{color:var(--paper-ink);margin:0 0 12px;font-size:1rem;font-weight:700;line-height:1.3}.learn-code pre{white-space:pre-wrap;overflow-wrap:anywhere;color:var(--paper-ink);margin:0;font-family:ui-monospace,SF Mono,Menlo,Consolas,monospace;font-size:.9375rem;line-height:1.6;overflow-x:auto}@media (max-width:639px){.learn-code{padding:20px}.learn-code pre{font-size:.875rem}}.learn-prose .learn-figure,.learn-prose .learn-download{margin-block:32px}.learn-figure img{border-radius:var(--learn-r);width:auto;max-width:100%;height:auto;max-height:860px;margin-inline:auto;display:block}.learn-figure figcaption{color:var(--paper-ink-2);text-align:center;margin-top:12px;font-size:.9375rem;line-height:1.5}.learn-download{border-radius:var(--learn-r);background:var(--paper-wash);flex-wrap:wrap;align-items:center;gap:8px 16px;padding:24px;font-size:1.0625rem;line-height:1.5;display:flex}.learn-prose .learn-download a{background:var(--paper-ink);color:#fff;border-radius:8px;padding:10px 18px;font-weight:650;text-decoration:none}.learn-prose .learn-download a:hover{background:#000}.learn-map-frame{border-radius:var(--learn-r);background:var(--color-background);color:var(--color-foreground);padding:24px}.learn-map-pillar{width:fit-content;color:var(--paper-ink);text-align:center;background:#fff;border-radius:8px;padding:12px 20px;font-size:1.0625rem;font-weight:700;line-height:1.3;margin:0 auto!important}.learn-prose ul.learn-map-clusters{gap:12px;margin-top:24px;padding:0;list-style:none;display:grid}.learn-map-clusters>li{background:var(--color-surface-2);border-radius:8px;padding:16px;margin:0!important}.learn-map-cluster{align-items:center;gap:8px;font-size:1.0625rem;font-weight:700;line-height:1.3;display:flex;margin:0!important}.learn-map-cluster:before{content:"";background:var(--dot);border-radius:999px;width:10px;height:10px}.learn-prose .learn-map-clusters ul{gap:8px;margin-top:12px;padding:0;font-size:1rem;line-height:1.35;list-style:none;display:grid}.learn-map-clusters ul li{margin:0!important}.learn-map figcaption{color:var(--paper-ink-2);text-align:center;margin-top:12px;font-size:.9375rem;line-height:1.5}@media (min-width:640px){.learn-prose ul.learn-map-clusters{grid-template-columns:repeat(3,minmax(0,1fr));padding-top:24px;position:relative}.learn-map-clusters:before{content:"";background:var(--color-muted-deep);width:1px;height:24px;position:absolute;top:-24px;left:50%}.learn-map-clusters:after{content:"";background:var(--color-muted-deep);height:1px;position:absolute;top:0;left:16.6%;right:16.6%}.learn-map-clusters>li{position:relative}.learn-map-clusters>li:before{content:"";background:var(--color-muted-deep);width:1px;height:24px;position:absolute;top:-24px;left:50%}}.learn-inline-buy{border-radius:var(--learn-r);background:var(--color-background);color:var(--color-foreground);flex-wrap:wrap;justify-content:space-between;align-items:center;gap:16px 24px;margin-top:72px;padding:24px;display:flex}.learn-inline-buy>div{flex:260px}.learn-inline-buy-title{font-size:1.375rem;font-weight:700;line-height:1.2}.learn-inline-buy-sub{margin-top:8px;font-size:1.0625rem;line-height:1.45}@media (min-width:1280px){.learn-inline-buy{display:none}}.learn-sources{margin-top:88px;font-size:1.0625rem;line-height:1.55}.learn-sources h2{letter-spacing:-.01em;font-size:1.5rem;font-weight:700;line-height:1.2}.learn-sources ol{overflow-wrap:anywhere;grid-template-columns:minmax(0,1fr);gap:8px;margin-top:16px;padding-left:1.4em;list-style:decimal;display:grid}.learn-sources a{color:var(--paper-link);text-underline-offset:3px;text-decoration:underline}.learn-pager{gap:24px;margin-top:88px;display:grid}@media (min-width:640px){.learn-pager{grid-template-columns:1fr 1fr}}.learn-pager a{gap:4px;display:grid}.learn-pager a:hover strong{text-underline-offset:4px;text-decoration:underline;text-decoration-thickness:2px}.learn-pager a.is-next{text-align:right}.learn-pager span{color:var(--paper-ink-2);font-size:.9375rem}.learn-pager strong{font-size:1.1875rem;font-weight:650;line-height:1.3}.learn-section{margin-top:88px}.learn-h2{letter-spacing:-.02em;scroll-margin-top:24px;font-size:clamp(1.75rem,1.5rem + 1.2vw,2.25rem);font-weight:700;line-height:1.1}.learn-h2 a:hover{text-underline-offset:4px;text-decoration:underline;text-decoration-thickness:2px}.learn-section-desc{color:var(--paper-ink-2);margin-top:12px;font-size:1.125rem;line-height:1.55}.learn-list{border-top:1px solid var(--paper-rule);margin-top:24px}.learn-head+.learn-list{margin-top:48px}.learn-list-row{border-bottom:1px solid var(--paper-rule);grid-template-columns:1.6em minmax(0,1fr) auto;align-items:baseline;gap:8px 12px;padding:24px 4px;display:grid}a.learn-list-row:hover .learn-list-title{background:linear-gradient(var(--paper-yellow), var(--paper-yellow)) no-repeat 0 58% / 100% .92em}.learn-list-n,.learn-list-meta{font-variant-numeric:tabular-nums;color:var(--paper-ink-2);font-size:.9375rem}.learn-list-title{font-size:1.3125rem;font-weight:650;line-height:1.25;display:inline}.learn-list-desc{color:var(--paper-ink-2);margin-top:8px;font-size:1.0625rem;line-height:1.5;display:block}.learn-list-row.is-planned .learn-list-title{color:var(--paper-ink-2);font-weight:500}.learn-entity-meta{color:var(--paper-ink-2);margin-top:24px;font-size:.9375rem;line-height:1.5}.learn-entity-meta a,.learn-entity a{color:var(--paper-link);text-underline-offset:3px;text-decoration:underline}.learn-entities{gap:56px;margin-top:32px;display:grid}.learn-entity{scroll-margin-top:24px}.learn-entity:target h3{background:linear-gradient(var(--paper-yellow), var(--paper-yellow)) no-repeat 0 58% / 100% .92em;width:fit-content}.learn-entity h3{letter-spacing:-.01em;font-size:1.625rem;font-weight:700;line-height:1.15}.learn-entity h3 a{color:inherit}.learn-entity-type,.learn-entity-aka{color:var(--paper-ink-2);margin-top:4px;font-size:.9375rem}.learn-entity-desc{margin-top:12px;font-size:1.125rem;line-height:1.6}.learn-entity dl{gap:8px;margin-top:16px;font-size:1.0625rem;line-height:1.5;display:grid}.learn-entity dl>div{gap:4px 16px;display:grid}@media (min-width:640px){.learn-entity dl>div{grid-template-columns:96px minmax(0,1fr)}}.learn-entity dt{font-weight:650}.learn-entity dd{flex-wrap:wrap;gap:4px 20px;display:flex}.learn-entity blockquote{border-radius:var(--learn-r);background:var(--paper-wash);margin-top:16px;padding:16px 20px;font-size:1.0625rem;line-height:1.55}.learn-entity blockquote footer{color:var(--paper-ink-2);margin-top:8px;font-size:.9375rem}.learn-aside{align-content:start;gap:16px;padding:8px 8px 32px;display:grid}@media (min-width:640px) and (max-width:1279px){.learn-aside{grid-template-columns:1fr 1fr;width:100%;max-width:1056px;margin-inline:auto;padding:0 28px 40px}}@media (min-width:1280px){.learn-aside{height:100dvh;padding:28px 16px 32px;position:sticky;top:0;overflow-y:auto}}.learn-card{background:var(--color-surface-2);border-radius:12px;padding:24px}.learn-card-title{text-wrap:balance;font-size:1.375rem;font-weight:700;line-height:1.2}.learn-price{align-items:baseline;gap:10px;margin-top:16px;display:flex}.learn-price-now{letter-spacing:-.02em;font-size:2.5rem;font-weight:800;line-height:1}.learn-price s{color:var(--color-muted);font-size:1.125rem}.learn-price-note{color:var(--color-muted);font-size:.9375rem}.learn-card-list{gap:10px;margin:18px 0 20px;display:grid}.learn-card-list li{gap:10px;font-size:1rem;line-height:1.4;display:flex}.learn-card-list svg{flex:none;margin-top:2px}.learn-card-foot{text-align:center;color:var(--color-muted);margin-top:12px;font-size:.875rem}.learn-author-head{align-items:center;gap:12px;display:flex}.learn-author-photo{border-radius:999px;flex:none}.learn-author-name{font-size:1.125rem;font-weight:700;line-height:1.2}.learn-author-role{color:var(--color-muted);margin-top:2px;font-size:.875rem}.learn-author-bio{margin-top:14px;font-size:1rem;line-height:1.55}.learn-author-creds{color:var(--color-muted);gap:6px;margin-top:12px;font-size:.9375rem;display:grid}.learn-author-links{flex-wrap:wrap;gap:8px 20px;margin-top:16px;display:flex}.learn-author-links a{text-underline-offset:4px;font-size:.9375rem;font-weight:600;text-decoration:underline}.learn-author-links a:hover{text-decoration-thickness:2px}.learn-foot{color:var(--color-muted);text-align:center;padding:8px 28px 48px;font-size:.9375rem}.learn-foot nav{flex-wrap:wrap;justify-content:center;gap:8px 20px;display:flex}.learn-foot a:hover,.learn-foot button:hover{color:var(--color-foreground)}.learn-foot p{margin-top:16px}@media (prefers-reduced-motion:no-preference){.learn{scroll-behavior:smooth}}