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var(--card-shadow);flex-direction:column;grid-area:1/1;gap:14px;padding:28px;display:flex}.index-card-question{justify-self:start;margin-top:0;transform:rotate(-4deg)}.index-card-answer{justify-self:end;margin-top:30px;transform:rotate(3deg)}.card-meta{color:var(--muted);font-family:var(--font-mono);justify-content:space-between;gap:12px;font-size:12px;display:flex}.index-card-question .card-text{font-family:var(--font-display);font-size:26px;line-height:1.25}.index-card-answer .card-text{color:var(--body);font-size:17px;line-height:1.6}.grades{flex-wrap:wrap;gap:8px;margin-top:auto;display:flex}.grade{border:1px solid var(--rule);padding:6px 12px;font-size:13px}.grade-primary{border-color:var(--accent);background:var(--accent);color:var(--on-accent)}.section{padding:80px var(--gutter);grid-template-columns:repeat(12,minmax(0,1fr));column-gap:24px;display:grid}.section-head{flex-direction:column;align-items:flex-start;gap:20px;display:flex}.features{border-top:1px solid var(--rule)}.features .section-head{grid-column:span 4;gap:16px}.ruled-list{grid-column:6/span 7}.ruled-item{border-top:1px solid var(--rule);grid-template-columns:64px minmax(0,1fr);gap:16px;padding:24px 0;display:grid}.ruled-item:first-child{border-top-color:var(--ink)}.ruled-item:last-child{border-bottom:1px solid var(--rule)}.numeral{color:var(--accent);font-family:var(--font-display);font-size:28px;line-height:1.1}.ruled-copy{flex-direction:column;gap:6px;display:flex}.ruled-copy p{color:var(--secondary)}.trees{margin:0 var(--gutter);background:var(--panel);grid-template-columns:repeat(2,minmax(0,1fr));align-items:center;gap:64px;padding:80px;display:grid}.trees-figure svg{width:100%;max-width:540px;height:auto;display:block}.edge{stroke:var(--faint);stroke-width:1.5px;stroke-dasharray:4 5}.edge-lit{stroke:var(--ink);stroke-width:2px;stroke-dasharray:none}.node text{font-family:var(--font-body);text-anchor:middle;font-size:14px}.node-mastered rect{fill:var(--ink)}.node-mastered text{fill:var(--canvas)}.node-current rect{fill:var(--accent)}.node-current text{fill:var(--on-accent)}.node-open rect,.node-locked rect{fill:var(--card);stroke:var(--ink)}.node-open text{fill:var(--ink)}.node-locked rect{stroke:var(--faint);stroke-dasharray:4 4}.node-locked text{fill:var(--muted)}.api{align-items:start;padding-block:120px}.api .section-head{grid-column:span 5}.code-block{border:1px solid var(--inverse-border);background:var(--inverse);min-width:0;color:var(--inverse-code);grid-column:7/span 6;padding:32px}.code-block pre{font-family:var(--font-mono);font-size:14px;line-height:1.8;overflow-x:auto}.pricing{border-top:1px solid var(--rule);grid-template-columns:repeat(3,minmax(0,1fr));gap:48px}.pricing .section-head{grid-column:1/-1;gap:16px}.plan{border-top:1px solid var(--ink);flex-direction:column;align-items:flex-start;gap:14px;padding-top:24px;display:flex}.plan-featured{border-top:4px solid var(--accent)}.plan-price{font-family:var(--font-display);font-size:56px;font-weight:300;line-height:1.1}.plan-per{color:var(--secondary);margin-top:-10px}.plan-includes{color:var(--secondary)}.closing-band{margin:40px var(--gutter) 0;border:1px solid var(--inverse-border);background:var(--inverse);color:var(--inverse-ink);text-align:center;flex-direction:column;align-items:center;gap:28px;padding:96px;display:flex}.closing-band h2{font-size:clamp(40px,5vw,72px);font-weight:300}@media (max-width:960px){.nav-links{display:none}.hero{padding-block:88px}.section,.trees{grid-template-columns:minmax(0,1fr);gap:40px}.features .section-head,.ruled-list,.api .section-head,.code-block{grid-column:1/-1}.trees{padding:56px}.trees .section-head{order:-1}.api{padding-block:80px}.pricing{grid-template-columns:repeat(2,minmax(0,1fr))}.pricing .section-head{grid-column:1/-1}}@media (max-width:640px){.nav{padding-block:20px}.nav-actions{gap:16px}.wordmark{font-size:22px}.hero{gap:48px;padding-block:56px 72px}.hero-lede{font-size:17px}.hero-actions{flex-direction:column;align-self:stretch}.index-card{width:100%;min-height:0;padding:22px}.index-card-question{grid-area:1/1;width:94%;transform:rotate(-1.5deg)}.index-card-answer{grid-area:2/1;width:94%;margin-top:-16px;transform:rotate(1deg)}.index-card-question .card-text{font-size:22px}.index-card-answer .card-text{font-size:16px}.section{padding-block:56px}.ruled-item{grid-template-columns:44px minmax(0,1fr);gap:12px}.trees{padding:56px var(--gutter);margin-inline:0}.code-block{padding:20px}.code-block pre{font-size:12.5px}.pricing{grid-template-columns:minmax(0,1fr)}.closing-band{padding:64px var(--gutter);margin-inline:0}}