.learn-shell{color:var(--foreground);width:100%;max-width:1120px;margin:0 auto;padding:clamp(28px,5vw,64px) clamp(18px,5vw,56px) clamp(64px,8vw,112px)}.learn-shell h1,.learn-shell h2,.learn-shell h3{font-family:var(--serif);letter-spacing:-.02em;font-weight:400}.learn-shell p{line-height:1.68}.learn-breadcrumb{color:var(--ink-faint);font-family:var(--sans);letter-spacing:.08em;flex-wrap:wrap;align-items:center;gap:10px;margin-bottom:clamp(42px,6vw,76px);font-size:.72rem;display:flex}.learn-breadcrumb a,.learn-other a,.learn-related a{color:var(--ink-soft);-webkit-text-decoration-color:var(--line);text-decoration-color:var(--line);text-underline-offset:.25em}.learn-breadcrumb a:hover,.learn-other a:hover,.learn-related a:hover{color:var(--foreground)}.learn-heading{max-width:780px}.learn-heading h1{text-wrap:balance;margin:14px 0 22px;font-size:clamp(2.45rem,5.2vw,4.35rem);line-height:1.08}.learn-heading>p:last-child{color:var(--ink-soft);font-family:var(--serif);max-width:65ch;margin:0;font-size:clamp(1.12rem,1.8vw,1.35rem)}.learn-hub-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:18px;margin-top:clamp(46px,7vw,80px);display:grid}.learn-hub-card{border-top:1px solid var(--line-strong);padding:26px 24px 30px 0}.learn-hub-card h2{margin:10px 0;font-size:clamp(1.65rem,2.5vw,2.2rem);line-height:1.16}.learn-hub-card h2 a{color:inherit;text-decoration:none}.learn-hub-card h2 a:hover{text-decoration:underline;-webkit-text-decoration-color:var(--line-strong);text-decoration-color:var(--line-strong);text-underline-offset:.18em}.learn-hub-card>p:not(.eyebrow){color:var(--ink-soft);max-width:40ch}.learn-hub-card ul,.learn-index ul,.learn-related ul,.learn-other ul{margin:22px 0 0;padding:0;list-style:none}.learn-hub-card li{border-top:1px solid var(--line);padding:13px 0}.learn-hub-card li a{color:var(--foreground);text-decoration:none}.learn-hub-card li a:hover,.learn-index a:hover strong{text-decoration:underline;-webkit-text-decoration-color:var(--line-strong);text-decoration-color:var(--line-strong);text-underline-offset:.2em}.learn-hub-card li span{color:var(--ink-faint)}.learn-start{border-left:2px solid var(--line-strong);max-width:720px;margin:clamp(42px,6vw,68px) 0;padding:4px 0 4px 24px}.learn-start h2{margin:8px 0;font-size:1.7rem}.learn-start p:last-child{color:var(--ink-soft);font-family:var(--serif);margin-bottom:0;font-size:1.12rem}.learn-index{margin-top:clamp(50px,7vw,86px)}.learn-index h2,.learn-related h2,.learn-other h2{margin:0;font-size:clamp(1.7rem,3vw,2.25rem)}.learn-index li{border-top:1px solid var(--line)}.learn-index li:last-child{border-bottom:1px solid var(--line)}.learn-index a{color:var(--foreground);grid-template-columns:minmax(0,1fr) minmax(0,1.4fr) 20px;align-items:baseline;gap:8px 20px;padding:22px 0;text-decoration:none;display:grid}.learn-index strong{font-family:var(--serif);font-size:1.25rem;font-weight:400}.learn-index a span:not(.learn-arrow){color:var(--ink-soft);font-size:.94rem;line-height:1.5}.learn-arrow{color:var(--ink-faint)}.learn-other,.learn-related{border-top:1px solid var(--line);margin-top:clamp(56px,7vw,90px);padding-top:30px}.learn-other ul,.learn-related ul{flex-wrap:wrap;gap:16px 30px;display:flex}.learn-threshold{border-top:1px solid var(--line-strong);max-width:760px;margin-top:clamp(60px,8vw,100px);padding-top:32px}.learn-threshold h2{margin:10px 0;font-size:clamp(1.8rem,3.3vw,2.6rem);line-height:1.13}.learn-threshold>p:not(.eyebrow){color:var(--ink-soft);font-family:var(--serif);max-width:54ch;font-size:1.1rem}.learn-actions{flex-wrap:wrap;gap:14px 28px;margin-top:26px;display:flex}.learn-actions a{color:var(--foreground);font-family:var(--serif);-webkit-text-decoration-color:var(--line-strong);text-decoration-color:var(--line-strong);text-underline-offset:.28em;font-size:1.06rem;font-style:italic}.learn-actions a:hover{color:var(--ink-soft)}.learn-article article{max-width:760px}.learn-article .learn-heading{margin-bottom:clamp(54px,7vw,84px)}.learn-article .learn-answer{border-left:2px solid var(--line-strong);padding-left:24px}.learn-prose{margin:40px 0}.learn-prose h2{margin:0 0 16px;font-size:clamp(1.65rem,2.7vw,2.1rem)}.learn-prose p{color:var(--ink-soft);max-width:68ch;margin:0 0 16px;font-size:1.04rem}.learn-example{background:color-mix(in srgb,var(--foreground) 4%,transparent);border-top:1px solid var(--line-strong);margin-top:clamp(52px,7vw,80px);padding:30px clamp(20px,4vw,40px)}.learn-example h2{margin:9px 0 20px;font-size:1.8rem}.learn-example pre{border-left:2px solid var(--line-strong);font-family:var(--serif);white-space:pre-wrap;padding:6px 0 6px 20px;font-size:clamp(1rem,1.6vw,1.18rem);line-height:1.8;overflow-x:auto}.learn-example p{color:var(--ink-soft);font-size:1.02rem}.learn-example h3{margin:28px 0 0;font-size:1.22rem}@media (max-width:720px){.learn-hub-grid{grid-template-columns:1fr}.learn-index a{grid-template-columns:minmax(0,1fr) 20px}.learn-index a span:not(.learn-arrow){grid-area:2/1}.learn-arrow{grid-area:1/2}.learn-breadcrumb{margin-bottom:36px}}