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0}.feature-grid{gap:var(--s-3);display:grid}@media (min-width:768px){.feature-grid{grid-template-columns:repeat(3,1fr)}}.chapter-grid{gap:var(--s-3);display:grid}@media (min-width:640px){.chapter-grid{grid-template-columns:repeat(2,1fr)}}@media (min-width:980px){.chapter-grid{grid-template-columns:repeat(3,1fr)}}.chapter-card{gap:var(--s-4);align-items:flex-start;display:flex}.chapter-num{font-family:var(--font-mono);font-size:var(--text-mono);font-variant-numeric:tabular-nums;color:var(--muted);border:1px solid var(--line);border-radius:var(--r-pill);flex-shrink:0;place-items:center;block-size:36px;inline-size:36px;display:grid}.chapter-card-body{flex:1}.chapter-card-meta{align-items:center;gap:var(--s-2);margin-block-start:var(--s-2);display:flex}.badge-free{font-size:var(--text-caption);color:var(--brand);background:var(--brand-weak);border-radius:var(--r-pill);padding:2px var(--s-3);font-weight:700}.price-grid{gap:var(--s-4);display:grid}@media (min-width:768px){.price-grid{grid-template-columns:1fr 1fr}}.price-figure{font-size:var(--text-display);letter-spacing:-.015em;font-weight:700}.price-figure small{font-size:var(--text-caption);color:var(--muted);letter-spacing:0;font-weight:600}.price-list{margin-block:var(--s-4);padding:0;list-style:none}.price-list li{padding-block:var(--s-2);border-bottom:1px solid var(--line);font-size:var(--text-body)}.price-list li:last-child{border-bottom:none}.price-card-featured{border:1.5px solid var(--brand)}.mobile-sticky-cta{display:none}@media (max-width:720px){.mobile-sticky-cta{z-index:var(--z-header);gap:var(--s-2);padding:var(--s-2) var(--gutter) calc(var(--s-2) + env(safe-area-inset-bottom));background:color-mix(in srgb, var(--paper) 94%, transparent);border-block-start:1px solid var(--line);grid-template-columns:1fr 1fr;display:grid;position:fixed;inset-block-end:0;inset-inline:0}.mobile-sticky-cta .btn{min-height:44px;padding:var(--s-2);white-space:nowrap}body:has(.mobile-sticky-cta) .site-footer{margin-block-end:72px}}@media (max-width:360px){.hero-actions .btn-secondary,.hero-proof{display:none}.hero-product{margin-block-start:var(--s-8)}}@media (max-width:720px){.hero{padding-block-start:var(--s-8)}.hero-product{grid-template-columns:1fr}.hero-progress-panel{border-inline-end:0;border-block-end:1px solid var(--line)}.hero-question-panel{padding:var(--s-4)}.hero-copy .display{font-size:clamp(2.7rem,14vw,3.7rem)}.section-heading-row{align-items:start;display:grid}.section-heading-row .btn{width:100%}}.faq-item{border-bottom:1px solid var(--line)}.faq-item summary{cursor:pointer;padding-block:var(--s-4);min-height:var(--touch-min);justify-content:space-between;align-items:center;gap:var(--s-3);font-weight:600;list-style:none;display:flex}.faq-item summary::-webkit-details-marker{display:none}.faq-item summary:after{content:"+";color:var(--muted);font-weight:500}.faq-item[open] summary:after{content:"–"}.faq-item .faq-body{color:var(--muted);max-width:65ch;padding-block-end:var(--s-4)}.card-link{color:inherit;transition:border-color var(--t-fast);text-decoration:none;display:flex}.card-link:hover{border-color:var(--brand);color:inherit}.chapter-locked .chapter-num{color:var(--line)}.chapter-card-title{font-size:var(--text-h3);margin:0}.reading-section{margin-block-end:var(--s-8)}.reading-section .lang-support{margin-block-start:var(--s-2)}.summary-list{margin:0;padding-inline-start:var(--s-5)}.summary-list li{margin-block-end:var(--s-3)}.summary-list li::marker{color:var(--gold)}.site-footer{background:var(--ink);color:var(--paper);margin-block-start:var(--s-16)}.site-footer-inner{padding-block:var(--s-10);gap:var(--s-8);display:grid}@media (min-width:768px){.site-footer-inner{grid-template-columns:minmax(0,1.2fr) minmax(0,2fr)}}.footer-note{color:#b8c2ca;font-size:var(--text-caption);max-width:52ch}.site-footer a{color:#d7dee4}.site-footer a:hover{color:#fff}.footer-nav{gap:var(--s-6);align-content:start;display:grid}.footer-nav-group{gap:var(--s-2);align-content:start;display:grid}.footer-heading{color:#fff;font-size:var(--text-caption);margin:0 0 var(--s-1);font-weight:700}@media (min-width:720px){.footer-nav{grid-template-columns:repeat(3,minmax(0,1fr))}}