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.lang-support{font-weight:500}.options{gap:var(--s-3);margin-block:var(--s-6) 0;display:grid}.question-card .explanation{margin-block-start:var(--s-6)}.quiz-action{margin-block-start:var(--s-8)}.option-text{flex:1}.option:disabled{opacity:1;cursor:default}.option-marker{border:2px solid var(--line);color:#0000;block-size:24px;inline-size:24px;transition:border-color var(--t-fast), background var(--t-fast);border-radius:50%;flex-shrink:0;place-items:center;margin-block-start:1px;font-size:13px;font-weight:700;line-height:1;display:grid}.option[data-state=selected] .option-marker{border-color:var(--brand)}.option[data-state=selected] .option-marker:after{content:"";background:var(--brand);border-radius:50%;block-size:10px;inline-size:10px}.option[data-state=correct] .option-marker,.option[data-state=incorrect] .option-marker{color:#fff}.option[data-state=correct] .option-marker{border-color:var(--correct);background:var(--correct)}.option[data-state=incorrect] .option-marker{border-color:var(--incorrect);background:var(--incorrect)}.option[data-state=missed] .option-marker{border-color:var(--correct);color:var(--correct);border-style:dashed}.explanation-verdict{font-size:var(--text-caption);color:var(--correct);margin-block-end:var(--s-2);font-weight:700}.result-score{letter-spacing:-.02em;margin-block:var(--s-2) var(--s-3);font-size:clamp(3.25rem,2.5rem + 3vw,4.5rem);font-weight:700;line-height:1}.result-of{color:var(--muted);letter-spacing:0;font-size:.45em;font-weight:600}.result-bars{gap:var(--s-4);margin-block-start:var(--s-5);display:grid}.bar-row{gap:var(--s-1);display:grid}.bar-head{justify-content:space-between;align-items:baseline;gap:var(--s-3);font-size:var(--text-caption);display:flex}.bar-label{font-weight:600}.bar-label .lang-support{margin-block-start:0}.paywall-card{border:1.5px solid var(--brand)}.paywall-list{margin-block:0 var(--s-4);padding-inline-start:var(--s-5)}.paywall-list li{margin-block-end:var(--s-2)}.sim-cta{border-inline-start:4px solid var(--brand)}.no-sub-card{border-inline-start:4px solid var(--gold)}.auth-divider{align-items:center;gap:var(--s-3);color:var(--muted);font-size:var(--text-caption);display:flex}.auth-divider:before,.auth-divider:after{content:"";border-block-start:1px solid var(--line);flex:1}.btn-google{color:var(--ink);border:1.5px solid var(--line);justify-content:center;align-items:center;gap:var(--s-2);background:#fff;display:inline-flex}.btn-google:hover{border-color:var(--brand)}.purchase-row{border-block-end:1px solid var(--line);padding-block-end:var(--s-3)}.purchase-row:last-of-type{border-block-end:none;padding-block-end:0}.buy-consent{text-align:center;margin-block-start:var(--s-2)}.streak-chip{padding:var(--s-1) var(--s-3);background:var(--gold-weak);color:var(--ink);border:1px solid var(--gold);font-size:var(--text-caption);border-radius:999px;display:inline-block}.framsteg-totals{gap:var(--s-4);justify-items:start;display:grid}.totals-row{gap:var(--s-8);flex-wrap:wrap;display:flex}.progress-map{gap:var(--s-4);margin:0;padding:0;list-style:none;display:grid}.map-stop{gap:var(--s-4);grid-template-columns:44px minmax(0,1fr);display:grid;position:relative}.map-stop:before{content:"";border-inline-start:2px solid var(--line);position:absolute;inset-block:44px -16px;inset-inline-start:21px}.map-stop:last-child:before{display:none}.map-stop[data-state=strong]:before{border-color:var(--gold)}.map-dot{width:44px;height:44px;font-family:var(--font-mono);font-size:var(--text-caption);border:2px solid var(--line);background:var(--paper,#fff);color:var(--muted);z-index:1;border-radius:50%;justify-content:center;align-items:center;display:inline-flex;position:relative}.map-stop[data-state=started] .map-dot{border-color:var(--gold);color:var(--ink)}.map-stop[data-state=strong] .map-dot{border-color:var(--gold);background:var(--gold);color:#fff}.map-card{display:block}.map-card h3{font-size:var(--text-body)}.read-layout{gap:var(--s-10);grid-template-columns:minmax(0,1fr);display:grid}@media (min-width:920px){.read-layout{grid-template-columns:minmax(0,1fr) 264px;align-items:start}.chapter-sidebar{top:var(--s-6);position:sticky}}.read-main{max-width:68ch}.chapter-sidebar{border-inline-start:1px solid var(--line);padding-inline-start:var(--s-5)}.sidebar-title{text-transform:uppercase;letter-spacing:.06em;margin-block-end:var(--s-3)}.sidebar-list{gap:var(--s-1);margin:0;padding:0;list-style:none;display:grid}.sidebar-link{gap:var(--s-2);padding:var(--s-1) var(--s-2);color:var(--ink);font-size:var(--text-caption);border-radius:6px;align-items:baseline;text-decoration:none;display:flex}.sidebar-link:hover{background:var(--brand-weak);color:var(--ink)}.sidebar-link.is-current{background:var(--brand-weak);font-weight:600}.sidebar-num{color:var(--muted)}.sidebar-link .lang-support{display:none}.read-toc{padding:var(--s-4) var(--s-5);background:var(--brand-weak);border-radius:8px;margin-block-start:var(--s-6)}.read-toc ol{margin:0;padding-inline-start:var(--s-5)}.read-toc li{font-size:var(--text-caption);margin-block-end:var(--s-1)}.read-toc .lang-support{display:none}.mid-cta{gap:var(--s-3);justify-items:start;margin-block-start:var(--s-6);display:grid}.read-next{text-align:end;margin-block-start:var(--s-8)}.legal{max-width:65ch}.legal-intro{font-size:var(--text-lead,1.1rem);margin-block-start:var(--s-4)}.legal section{margin-block-start:var(--s-8)}.legal h2{margin-block-end:var(--s-3)}.legal p+p{margin-block-start:var(--s-3)}.legal ul{margin-block-start:var(--s-3);padding-inline-start:var(--s-5)}.legal li{margin-block-end:var(--s-2)}.hero{padding-block:var(--s-12) var(--s-12)}.hero-grid{gap:var(--s-10);align-items:center;display:grid}@media (min-width:900px){.hero-grid{gap:var(--s-16);grid-template-columns:1fr 1fr}}.eyebrow{font-family:var(--font-mono);font-size:var(--text-caption);color:var(--muted);letter-spacing:.02em;margin-block-end:var(--s-4)}.hero-sub{color:var(--muted);max-width:44ch}.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)}.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:2fr 1fr}}.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-2);align-content:start;display:grid}