:root{--bg:#f5f1e8;--surface:#fcfaf4;--ink:#17221e;--muted:#63706a;--accent:#276b59;--accent-warm:#b95f35;--accent-2:#dfeae3;--line:#d8d8cf;--code:#17211e;--shadow:0 18px 50px rgba(24,32,29,.08);--sans:Inter,ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;--serif:"Iowan Old Style","Palatino Linotype",Palatino,Georgia,serif;--mono:"SFMono-Regular",Consolas,"Liberation Mono",monospace;color-scheme:light dark}
html[data-theme=dark]{--bg:#101613;--surface:#171e1a;--ink:#eee9de;--muted:#9ba7a1;--accent:#7fc4aa;--accent-warm:#e09a6e;--accent-2:#20372e;--line:#303b35;--code:#0a0e0c;--shadow:0 18px 50px rgba(0,0,0,.24)}
@media(prefers-color-scheme:dark){html[data-theme=system]{--bg:#101613;--surface:#171e1a;--ink:#eee9de;--muted:#9ba7a1;--accent:#7fc4aa;--accent-warm:#e09a6e;--accent-2:#20372e;--line:#303b35;--code:#0a0e0c;--shadow:0 18px 50px rgba(0,0,0,.24)}}
*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:var(--bg);color:var(--ink);font-family:var(--sans);font-size:16px;line-height:1.6;overflow-x:clip}a{color:inherit;text-decoration:none}button{font:inherit;color:inherit}.shell{width:min(1180px,calc(100% - 48px));margin-inline:auto}.skip-link{position:fixed;z-index:1000;top:8px;left:8px;padding:8px 14px;background:var(--ink);color:var(--bg);transform:translateY(-150%)}.skip-link:focus{transform:none}:focus-visible{outline:3px solid var(--accent);outline-offset:3px}
.site-header{height:76px;border-bottom:1px solid var(--line);position:sticky;top:0;z-index:50;background:color-mix(in srgb,var(--bg) 90%,transparent);backdrop-filter:blur(16px)}.header-inner{height:100%;max-width:1280px;margin:auto;padding:0 32px;display:flex;align-items:center}.brand{display:inline-flex;align-items:center;gap:11px}.brand-symbol{width:38px;height:38px;flex:none;overflow:visible}.brand-symbol-frame,.brand-symbol-pages{fill:none;stroke:var(--ink);stroke-width:1.5;stroke-linecap:round;stroke-linejoin:round}.brand-symbol-pages{stroke:var(--accent)}.brand-symbol-node{fill:var(--accent-warm)}.brand-wordmark{display:flex;align-items:baseline;gap:7px;line-height:1}.brand-wordmark>span{font:650 14px/1 var(--mono);letter-spacing:-.035em}.brand-wordmark strong{font:500 21px/1 var(--serif);letter-spacing:-.025em}.brand:hover .brand-symbol-frame{stroke:var(--accent)}.brand:hover .brand-symbol-pages{stroke:var(--accent-warm)}.primary-nav{display:flex;gap:32px;margin-left:auto;margin-right:34px;font-size:14px}.primary-nav a:hover{color:var(--accent)}.header-actions{display:flex;gap:8px}.icon-button{height:40px;min-width:40px;display:flex;align-items:center;justify-content:center;gap:7px;border:1px solid var(--line);background:transparent;border-radius:99px;cursor:pointer}.icon-button:hover{background:var(--surface)}.icon-button kbd{font-size:10px;color:var(--muted);border:0}.menu-toggle{display:none}
.hero{padding:112px 0 100px;position:relative}.hero:after{content:"";position:absolute;width:38%;height:70%;right:2%;top:14%;opacity:.35;background:repeating-linear-gradient(90deg,transparent 0 31px,var(--accent) 32px 33px),repeating-linear-gradient(0deg,transparent 0 31px,var(--accent) 32px 33px);mask-image:linear-gradient(135deg,transparent,#000 30%,transparent 78%);pointer-events:none}.eyebrow{text-transform:uppercase;letter-spacing:.14em;color:var(--accent);font-size:12px;font-weight:700;margin:0 0 18px}.hero h1,.page-hero h1,.course-hero h1{font:500 clamp(48px,7vw,88px)/.98 var(--serif);letter-spacing:-.045em;max-width:850px;margin:0}.hero-copy{max-width:650px;font:400 20px/1.65 var(--sans);color:var(--muted);margin:32px 0}.hero-actions{display:flex;align-items:center;gap:28px}.button{display:inline-flex;align-items:center;gap:24px;padding:13px 20px;border:1px solid var(--ink);font-weight:650}.button.primary{background:var(--ink);color:var(--bg)}.button:hover{transform:translateY(-1px);box-shadow:var(--shadow)}.text-link,.section-heading>a{font-size:14px;font-weight:650;border-bottom:1px solid var(--line)}
.section-block{padding:70px 0 100px}.section-heading{display:flex;align-items:end;justify-content:space-between;margin-bottom:40px}.section-heading h2,.outcomes h2,.curriculum h2{font:500 clamp(34px,4vw,50px)/1.08 var(--serif);letter-spacing:-.03em;margin:0}.course-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}.course-card{min-height:300px;padding:26px;display:flex;flex-direction:column;background:var(--surface);border:1px solid var(--line);transition:.2s ease}.course-card:hover{transform:translateY(-4px);box-shadow:var(--shadow);border-color:var(--accent)}.card-top,.card-meta{display:flex;align-items:center;justify-content:space-between;font-size:12px;color:var(--muted)}.topic-pill{color:var(--accent);text-transform:uppercase;letter-spacing:.1em;font-weight:700}.course-card h3{font:500 29px/1.1 var(--serif);letter-spacing:-.02em;margin:35px 0 14px}.course-card p{color:var(--muted);margin:0}.card-meta{margin-top:auto;padding-top:28px;border-top:1px solid var(--line)}.card-meta a{font-size:22px;color:var(--accent)}
.topic-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:18px}.topic-card{min-height:270px;padding:32px;display:grid;grid-template-columns:65px 1fr;gap:24px;border:1px solid var(--line);background:var(--surface);transition:.2s ease}.topic-card:hover{border-color:var(--accent);transform:translateY(-3px);box-shadow:var(--shadow)}.topic-card-number{font:italic 18px var(--serif);color:var(--accent)}.topic-card h2{font:500 32px/1.1 var(--serif);margin:0 0 12px}.topic-card p:not(.eyebrow){color:var(--muted)}.topic-link{display:inline-flex;gap:20px;margin-top:20px;font-size:13px;font-weight:700;border-bottom:1px solid var(--line)}.principles{border-block:1px solid var(--line);background:var(--surface)}.principles-grid{display:grid;grid-template-columns:repeat(3,1fr)}.principles-grid>div{padding:55px 45px;border-right:1px solid var(--line)}.principles-grid>div:first-child{padding-left:0}.principles-grid>div:last-child{border:0}.principles span,.chapter-number{font:italic 18px var(--serif);color:var(--accent)}.principles h3{font:500 23px var(--serif);margin:20px 0 8px}.principles p{color:var(--muted);margin:0}.site-footer{max-width:1180px;margin:auto;padding:65px 0;display:flex;justify-content:space-between;border-top:1px solid var(--line);color:var(--muted)}.site-footer p{font-size:13px;margin-left:49px}.compact{color:var(--ink)}.compact .brand-symbol{width:38px;height:38px}.footer-links{display:flex;gap:30px;font-size:14px;align-items:center}.footer-links a:hover{color:var(--accent)}
.page-hero{padding:90px 0 35px}.page-hero h1{font-size:70px}.page-hero>p:last-child{font-size:20px;color:var(--muted);max-width:650px}.course-hero{padding:90px 0;display:grid;grid-template-columns:2fr 1fr;gap:80px}.course-hero>div:first-child>p:not(.eyebrow){font-size:20px;color:var(--muted);max-width:700px}.course-facts{display:flex;gap:45px;margin:36px 0}.course-facts span{display:flex;flex-direction:column;font-weight:650}.course-facts small{font-size:11px;color:var(--muted);text-transform:uppercase;letter-spacing:.1em}.course-glyph{align-self:center;height:300px;display:flex;align-items:center;justify-content:center;position:relative}.course-glyph span{position:absolute;border:1px solid var(--accent);width:180px;height:180px;transform:rotate(45deg)}.course-glyph span:nth-child(2){width:130px;height:130px;transform:rotate(30deg)}.course-glyph span:nth-child(3){width:75px;height:75px;background:var(--accent-2);transform:rotate(15deg)}.outcomes{padding:65px;display:grid;grid-template-columns:1fr 1fr;gap:80px;background:var(--accent-2)}.outcomes ul{margin:0;padding:0;list-style:none}.outcomes li{padding:12px 0 12px 28px;border-bottom:1px solid color-mix(in srgb,var(--accent) 25%,transparent);position:relative}.outcomes li:before{content:"✓";position:absolute;left:0;color:var(--accent)}.curriculum{padding-block:100px}.chapter-block{display:grid;grid-template-columns:90px 1fr;border-top:1px solid var(--line);padding:35px 0}.chapter-content>h3{font:500 28px var(--serif);margin:0}.chapter-content>p{color:var(--muted);margin-top:4px}.chapter-content ol{list-style:none;padding:0;margin:25px 0 0}.chapter-content li a{display:flex;justify-content:space-between;gap:20px;padding:15px 0;border-top:1px solid var(--line)}.chapter-content li span{display:flex;flex-direction:column}.chapter-content li small{color:var(--muted)}
.lesson-layout{display:grid;grid-template-columns:270px minmax(0,760px) 220px;justify-content:center;gap:48px;max-width:1500px;margin:auto;min-height:75vh}.course-sidebar,.page-toc{position:sticky;top:72px;align-self:start;max-height:calc(100vh - 72px);overflow:auto;padding:38px 24px}.sidebar-head{font-size:13px;font-weight:700;margin-bottom:28px}.sidebar-close{display:none}.course-sidebar details{margin:0 0 22px}.course-sidebar summary{font-size:12px;text-transform:uppercase;letter-spacing:.08em;color:var(--muted);font-weight:700;cursor:pointer}.course-sidebar ol{list-style:none;padding:7px 0 0;margin:0}.course-sidebar li a{display:block;padding:7px 12px;font-size:13px;color:var(--muted);border-left:2px solid var(--line)}.course-sidebar li.current a{color:var(--ink);border-color:var(--accent);font-weight:700;background:var(--accent-2)}.lesson-main{min-width:0}.outline-toggle{display:none}.lesson-article{padding:60px 0 90px}.breadcrumbs{font-size:12px;color:var(--muted);display:flex;gap:8px;margin-bottom:45px}.lesson-header h1{font:500 clamp(44px,6vw,66px)/1.03 var(--serif);letter-spacing:-.035em;margin:0}.lesson-description{font-size:20px;color:var(--muted);line-height:1.55}.lesson-meta{display:flex;gap:22px;color:var(--muted);font-size:12px;padding-bottom:36px;border-bottom:1px solid var(--line)}.page-toc{padding-top:65px;font-size:12px}.page-toc>p{text-transform:uppercase;letter-spacing:.1em;font-weight:700}.page-toc nav ul{list-style:none;padding:0}.page-toc nav ul ul{padding-left:12px}.page-toc a{color:var(--muted);display:block;padding:5px 0}.page-toc a:hover{color:var(--accent)}
.prose{font:18px/1.78 var(--serif)}.prose h2,.prose h3{font-family:var(--sans);letter-spacing:-.02em;line-height:1.2;scroll-margin-top:95px}.prose h2{font-size:30px;margin:2.4em 0 .7em}.prose h3{font-size:22px;margin:2em 0 .6em}.prose a{color:var(--accent);text-decoration:underline;text-underline-offset:3px}.prose code{font:14px ui-monospace,SFMono-Regular,Menlo,monospace;background:var(--accent-2);padding:.15em .35em;overflow-wrap:anywhere;word-break:break-word}.prose pre:not(.mermaid){background:var(--code);color:#e9eee9;padding:20px;overflow:auto;border-radius:2px;font-size:14px;line-height:1.65}.prose pre code{background:none;padding:0}.prose blockquote{margin:28px 0;padding:3px 24px;border-left:3px solid var(--accent);color:var(--muted)}.prose img{max-width:100%;height:auto}.prose table{width:100%;max-width:100%;table-layout:fixed;border-collapse:collapse;font-family:var(--sans);font-size:14px}.prose th,.prose td{text-align:left;padding:10px;border-bottom:1px solid var(--line);overflow-wrap:anywhere;word-break:break-word}.prose td code,.prose th code{overflow-wrap:anywhere;word-break:break-word}.mermaid-wrap{margin:36px 0;border:1px solid var(--line);background:var(--surface);overflow:auto}.mermaid-toolbar{display:flex;justify-content:space-between;padding:8px 12px;border-bottom:1px solid var(--line);font:11px var(--sans);text-transform:uppercase;letter-spacing:.1em;color:var(--muted)}.mermaid-toolbar button{border:0;background:none;color:var(--accent);cursor:pointer}.mermaid{padding:24px;display:flex;justify-content:center;background:var(--surface);color:var(--ink)}.mermaid svg{max-width:100%;height:auto}.mermaid text{font-family:var(--sans)!important}.mermaid-wrap.expanded{position:fixed;inset:20px;z-index:100;background:var(--surface);display:flex;flex-direction:column}.mermaid-wrap.expanded .mermaid{flex:1;align-items:center}.lesson-nav{display:grid;grid-template-columns:1fr 1fr;gap:14px;margin-top:80px}.lesson-nav a{border:1px solid var(--line);padding:18px;display:flex;flex-direction:column}.lesson-nav .prev{grid-column:1}.lesson-nav .next{grid-column:2;text-align:right;background:var(--accent-2)}.lesson-nav small{color:var(--muted);text-transform:uppercase;letter-spacing:.1em}.standalone{max-width:760px}.search-page{min-height:65vh}.search-page #search{margin-top:40px;max-width:800px;--pagefind-ui-primary:var(--accent);--pagefind-ui-text:var(--ink);--pagefind-ui-background:var(--surface);--pagefind-ui-border:var(--line);--pagefind-ui-tag:var(--accent-2);--pagefind-ui-font:var(--sans)}.error-page{min-height:65vh}
@media(max-width:1100px){.course-grid{grid-template-columns:repeat(2,1fr)}.lesson-layout{grid-template-columns:minmax(0,760px) 210px;padding-left:32px}.course-sidebar{position:fixed;z-index:90;left:0;top:0;bottom:0;width:290px;max-height:none;background:var(--surface);box-shadow:var(--shadow);transform:translateX(-105%);transition:.2s}.course-sidebar.open{transform:none}.sidebar-head{display:flex;justify-content:space-between}.sidebar-close{display:block;border:0;background:none;font-size:24px}.outline-toggle{display:block;margin-top:25px;border:1px solid var(--line);background:var(--surface);padding:9px 12px}.course-glyph{display:none}.course-hero{grid-template-columns:1fr}.outcomes{gap:35px}}
@media(max-width:760px){.topic-grid{grid-template-columns:1fr}.shell{width:min(100% - 32px,1180px)}.site-header{height:64px}.header-inner{padding:0 16px}.primary-nav{position:fixed;top:64px;left:0;right:0;background:var(--surface);padding:24px;display:none;flex-direction:column;border-bottom:1px solid var(--line)}.primary-nav.open{display:flex}.menu-toggle{display:flex}.search-button kbd{display:none}.brand>span:last-child{font-size:14px}.hero{padding:75px 0}.hero:after{display:none}.hero h1{font-size:52px}.hero-copy{font-size:18px}.course-grid{grid-template-columns:1fr}.section-block{padding:50px 0 70px}.principles-grid{grid-template-columns:1fr}.principles-grid>div{padding:35px 0;border-right:0;border-bottom:1px solid var(--line)}.site-footer{width:calc(100% - 32px);padding:45px 0;flex-direction:column;gap:25px}.course-hero{padding:60px 0}.course-hero h1,.page-hero h1{font-size:50px}.course-facts{gap:25px;flex-wrap:wrap}.outcomes{padding:32px 22px;grid-template-columns:1fr}.chapter-block{grid-template-columns:45px 1fr}.chapter-content li a{flex-direction:column}.lesson-layout{display:block;padding:0 18px}.page-toc{display:none}.lesson-article{padding-top:36px}.lesson-header h1{font-size:44px}.prose{font-size:17px}.lesson-nav{grid-template-columns:1fr}.breadcrumbs{margin-bottom:32px}.outline-toggle{margin-top:18px}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}*,*:before,*:after{transition:none!important}}
@media print{.site-header,.site-footer,.course-sidebar,.page-toc,.outline-toggle,.lesson-nav{display:none!important}.lesson-layout{display:block}.lesson-article{padding:0}.prose{font-size:12pt}.mermaid-wrap{break-inside:avoid}}

/* Editorial theme */
.hero{display:grid;grid-template-columns:minmax(0,1.65fr) minmax(280px,.65fr);gap:clamp(48px,8vw,120px);padding:clamp(88px,12vw,156px) 0 72px;border-bottom:1px solid var(--line)}.hero:after{display:none}.hero h1{font-size:clamp(56px,7.5vw,104px);line-height:.92;max-width:900px}.hero-aside{align-self:end;max-width:430px;padding-bottom:8px}.hero-aside>p{font-size:18px;line-height:1.7;color:var(--muted);margin:0 0 32px}.hero-actions{align-items:flex-start;flex-wrap:wrap}.library-note{display:flex;gap:0;padding:18px 0;border-bottom:1px solid var(--line)}.library-note span{font:650 10px/1 var(--mono);letter-spacing:.12em;text-transform:uppercase;color:var(--muted);display:flex;align-items:center}.library-note span+span:before{content:"";width:3px;height:3px;border-radius:50%;background:var(--accent-warm);margin:0 20px}.section-block{padding-top:96px}.course-grid{display:block}.course-card{position:relative;min-height:0;padding:30px 0;display:grid;grid-template-columns:150px minmax(0,1fr) 160px;column-gap:34px;align-items:start;background:transparent;border:0;border-top:1px solid var(--line);box-shadow:none}.course-card:last-child{border-bottom:1px solid var(--line)}.course-card:hover{transform:none;box-shadow:none;border-color:var(--line)}.course-card .card-title-link{position:static}.card-title-link:after{content:"";position:absolute;inset:0;z-index:1}.course-card .card-top{display:block;padding-top:5px}.course-card .difficulty{display:block;margin-top:10px}.course-card h3{font-size:clamp(28px,3.2vw,43px);margin:0 0 10px;transition:color .18s}.course-card p{max-width:650px}.course-card .card-meta{align-self:stretch;margin:0;padding:5px 0 0;display:flex;flex-direction:column;align-items:flex-end;justify-content:flex-start;gap:5px;border:0}.course-card .card-arrow{font-size:28px;color:var(--accent);margin-top:auto;transition:transform .18s}.course-card:hover h3{color:var(--accent)}.course-card:hover .card-arrow{transform:translate(4px,-4px)}.course-card a{position:relative;z-index:2}.topic-grid{display:block}.topic-card{min-height:0;padding:32px 0;grid-template-columns:120px 1fr;background:transparent;border:0;border-top:1px solid var(--line);box-shadow:none}.topic-card:last-child{border-bottom:1px solid var(--line)}.topic-card:hover{transform:none;box-shadow:none;border-color:var(--line)}.topic-card h2{font-size:clamp(32px,4vw,48px)}.course-hero{grid-template-columns:minmax(0,1fr) 180px;border-bottom:1px solid var(--line);padding-bottom:72px}.course-index{align-self:end;border-left:1px solid var(--line);padding-left:36px;display:flex;flex-direction:column;color:var(--muted)}.course-index span{font:650 10px var(--mono);letter-spacing:.12em;text-transform:uppercase}.course-index strong{font:400 86px/1 var(--serif);color:var(--accent);letter-spacing:-.06em}.outcomes{background:transparent;border-block:1px solid var(--line);padding:64px 0}.course-reference{margin-top:30px;margin-bottom:0;color:var(--muted);font:14px/1.5 var(--sans)}.course-reference a{color:var(--accent);font-weight:700;text-decoration:underline;text-underline-offset:3px}.curriculum{padding-top:88px}.chapter-block{grid-template-columns:120px 1fr;padding:42px 0}.lesson-layout{grid-template-columns:240px minmax(0,720px) 190px;gap:38px}.course-sidebar{border-right:1px solid var(--line)}.page-toc{border-left:1px solid var(--line)}.lesson-article{max-width:70ch;margin-inline:auto}.lesson-header{padding-bottom:8px}.evidence-legend{margin:24px 0 38px;padding:18px 20px;border:1px solid var(--line);border-left:4px solid var(--accent);background:var(--surface);font:14px/1.5 var(--sans)}.evidence-legend-heading{display:flex;align-items:baseline;justify-content:space-between;gap:18px;margin-bottom:14px}.evidence-legend-heading a{color:var(--accent);font-size:12px;font-weight:700;text-decoration:underline;text-underline-offset:3px}.evidence-legend ul{display:grid;grid-template-columns:repeat(3,1fr);gap:12px;list-style:none;margin:0;padding:0}.evidence-legend li{display:flex;align-items:baseline;gap:9px}.evidence-badge{display:inline-block;padding:2px 7px;border:1px solid var(--ink);border-radius:3px;background:var(--bg);color:var(--ink);font:650 11px/1.35 var(--sans);letter-spacing:.02em;white-space:nowrap;vertical-align:baseline}.evidence-durable{border-style:solid}.evidence-version-specific{border-style:dotted}.evidence-experimental{border-style:dashed}.evidence-badge+.evidence-badge{margin-left:.35em}.prose{font-size:18px;line-height:1.82}.prose h2,.prose h3{font-family:var(--serif);font-weight:500}.prose h2{font-size:34px}.prose h3{font-size:25px}.lesson-nav{gap:0;border-block:1px solid var(--line)}.lesson-nav a{border:0;padding:22px 0;background:transparent!important}.lesson-nav .prev{grid-column:1}.lesson-nav .next{grid-column:2;border-left:1px solid var(--line);padding-left:24px}
@media(max-width:1100px){.hero{grid-template-columns:1.35fr .75fr;gap:50px}.course-card{grid-template-columns:125px minmax(0,1fr) 130px}.lesson-layout{grid-template-columns:minmax(0,720px) 190px}.course-sidebar{border:0}.course-hero{grid-template-columns:1fr 140px}}
@media(max-width:760px){.hero{display:block;padding:72px 0 48px}.hero h1{font-size:clamp(48px,14vw,68px)}.hero-aside{margin-top:36px}.library-note{overflow:auto}.library-note span{white-space:nowrap}.course-card{grid-template-columns:1fr;padding:25px 0}.course-card .card-top{display:flex;gap:16px;justify-content:flex-start}.course-card .difficulty{margin:0}.course-card .card-meta{margin-top:18px;flex-direction:row;align-items:center;justify-content:flex-start}.course-card .card-arrow{margin:0 0 0 auto}.topic-card{grid-template-columns:48px 1fr}.course-hero{display:block}.course-index{display:none}.outcomes{padding:42px 0}.chapter-block{grid-template-columns:45px 1fr}.lesson-nav .prev,.lesson-nav .next{grid-column:1}.lesson-nav .next{border-left:0;border-top:1px solid var(--line);padding-left:0}.evidence-legend ul{grid-template-columns:1fr}.evidence-legend-heading{align-items:flex-start;flex-direction:column;gap:5px}}
.lesson-completion{margin-top:72px;padding:30px 0;border-block:1px solid var(--line);display:flex;align-items:center;justify-content:space-between;gap:28px}.lesson-completion h2{font:500 28px var(--serif);margin:0}.lesson-completion p{margin:4px 0 0;color:var(--muted);font-size:14px}.completion-toggle{display:flex;align-items:center;gap:10px;padding:12px 16px;border:1px solid var(--ink);background:transparent;cursor:pointer;font-weight:700}.completion-toggle[aria-pressed="true"]{background:var(--accent);border-color:var(--accent);color:var(--bg)}.progress-check{display:none;margin-right:7px;color:var(--accent)}[data-progress-item].is-complete .progress-check{display:inline}.card-progress{grid-column:2/4;display:flex;align-items:center;gap:12px;margin-top:20px}.progress-track{display:block;height:3px;flex:1;background:var(--line);overflow:hidden}.progress-track>[data-progress-bar]{display:block;width:0;height:100%;background:var(--accent);transition:width .25s}.card-progress small{font-size:10px;color:var(--muted);white-space:nowrap}@media(max-width:760px){.lesson-completion{align-items:flex-start;flex-direction:column}.card-progress{grid-column:1}}
.lesson-nav{grid-template-columns:repeat(2,minmax(0,1fr));gap:0}.lesson-nav a{min-width:0;gap:7px}.lesson-nav .prev{grid-column:1;align-items:flex-start;text-align:left;padding-right:24px}.lesson-nav .next{grid-column:2;align-items:flex-end;text-align:right;padding-left:24px}.lesson-nav .next:not(:only-child){border-left:1px solid var(--line)}.lesson-nav a:only-child{grid-column:1/-1;padding-inline:0;border-left:0}.lesson-nav .next:only-child{align-items:flex-end;text-align:right}.lesson-nav .prev:only-child{align-items:flex-start;text-align:left}.lesson-nav span{max-width:100%;overflow-wrap:anywhere}@media(max-width:760px){.lesson-nav{grid-template-columns:1fr}.lesson-nav .prev,.lesson-nav .next,.lesson-nav a:only-child{grid-column:1;padding:20px 0}.lesson-nav .next{border-left:0;border-top:0}.lesson-nav .next:not(:only-child){border-top:1px solid var(--line)}}