:root{color-scheme:light;--ink:#102a43;--muted:#486581;--accent:#006b55;--line:#d9e2ec;--paper:#fff;--soft:#f2f7fa}
*{box-sizing:border-box}html{font-size:100%;scroll-behavior:smooth}body{margin:0;color:var(--ink);background:var(--paper);font-family:system-ui,-apple-system,"Segoe UI",sans-serif;font-size:1.0625rem;line-height:1.65}a{color:var(--accent);text-underline-offset:.18em;text-decoration-thickness:.08em}a:hover{text-decoration-thickness:.15em}a:focus-visible{outline:3px solid #006b55;outline-offset:5px}h1,h2,p{margin-top:0}h1{font-size:clamp(2.15rem,5.4vw,3.8rem);line-height:1.12;letter-spacing:-.035em;font-weight:700}h2{font-size:1.65rem;line-height:1.25;letter-spacing:-.02em}.skip{position:fixed;left:1rem;top:-5rem;z-index:5;padding:.7rem;background:#fff}.skip:focus{top:1rem}.site-header{max-width:1120px;margin:auto;padding:1.4rem 2rem;border-bottom:1px solid var(--line);display:flex;align-items:center;justify-content:space-between;gap:1rem;font-size:.9rem}.wordmark{font-weight:700;color:var(--ink);text-decoration:none}.index{max-width:1040px;margin:auto;padding:4.5rem 2rem 3rem}.intro{max-width:760px;margin-bottom:3.5rem}.eyebrow{font-size:.875rem;line-height:1.5;font-weight:600;letter-spacing:.06em;color:var(--accent);margin-bottom:1rem}.lede{max-width:640px;font-size:1.25rem;color:var(--muted);line-height:1.6}.article-list{border-top:2px solid var(--ink)}.article-card{display:grid;grid-template-columns:64px 1fr;gap:1rem;padding:2.1rem 0;border-bottom:1px solid var(--line)}.number{font-family:ui-monospace,monospace;font-size:1.3rem;color:var(--muted)}.article-card h2{max-width:720px;margin-bottom:1rem}.article-card h2 a{color:var(--ink);text-decoration:none}.article-card h2 a:hover{text-decoration:underline}.article-card p:not(.eyebrow){max-width:690px}.meta{font-size:.875rem;color:var(--muted)}.index-note{max-width:760px;margin-top:2rem;color:var(--muted);font-size:.9375rem}.article{max-width:850px;margin:auto;padding:2rem 2rem 3rem}.breadcrumb{display:flex;flex-wrap:wrap;gap:1rem;margin-bottom:2.5rem;font-size:.875rem;color:var(--muted)}.article-header{padding-bottom:1rem;margin-bottom:1.5rem;border-bottom:1px solid var(--line)}.article-header h1{font-size:clamp(2rem,4.8vw,3.1rem)}.prose{font-family:Georgia,"Times New Roman",serif;font-size:1.125rem;line-height:1.8}.prose h2{font-family:system-ui,-apple-system,"Segoe UI",sans-serif;margin-top:2.8rem;margin-bottom:1.1rem;font-size:1.55rem}.prose p{margin-bottom:1.35rem}.prose ul{padding-left:1.4rem;margin-bottom:1.4rem}.prose li{padding-left:.15rem;margin-bottom:.55rem}.prose a{overflow-wrap:anywhere}.prose code{font-size:.875em;overflow-wrap:anywhere;font-family:ui-monospace,SFMono-Regular,Consolas,monospace;background:var(--soft);padding:.08rem .25rem;border-radius:3px}.prose pre{background:var(--ink);color:#fff;padding:1.2rem;overflow:auto;border-radius:5px;font-size:.9375rem;line-height:1.6}.prose pre code{background:transparent;padding:0;color:inherit;overflow-wrap:normal}.consultation{margin-top:2.7rem;padding:1.5rem 1.7rem;border-left:4px solid var(--accent);background:var(--soft)}.consultation h2{font-size:1.15rem;margin-bottom:.7rem}.consultation p{margin-bottom:0;font-size:1rem}.related{display:grid;gap:.5rem;margin-top:2rem;padding-top:1.5rem;border-top:1px solid var(--line)}.related span{font-size:.875rem;color:var(--muted)}.site-footer{max-width:1120px;margin:auto;border-top:1px solid var(--line);padding:1.5rem 2rem 2rem;font-size:.875rem;color:var(--muted)}.site-footer p{margin-bottom:.6rem}
@media(max-width:600px){.site-header{align-items:flex-start;flex-direction:column;padding:1rem 1.25rem;gap:.35rem}.index{padding:3rem 1.25rem 2rem}.intro{margin-bottom:2.5rem}.article-card{grid-template-columns:32px 1fr;gap:.75rem;padding:1.7rem 0}.article-card h2{font-size:1.45rem}.article{padding:1.5rem 1.25rem 2rem}.prose{font-size:1.0625rem}.site-footer{padding:1.25rem}.consultation{padding:1.1rem 1.2rem}.lede{font-size:1.125rem}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}}
.workbook-example{margin:1.7rem 0}.workbook-example img{display:block;width:100%;max-width:500px;height:auto;margin:auto;border:1px solid var(--line)}