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a{color:var(--color-accent)}.grammar-lesson-header{padding:24px 0 10px}.grammar-lesson-header h1{margin:7px 0 5px;font-size:clamp(2rem,4vw,3rem)}.grammar-lesson-header p{color:var(--color-muted);margin:0}.grammar-player{max-width:790px}.grammar-stage{gap:17px;display:grid}.grammar-stage-head h2{margin:3px 0 5px;font-size:1.55rem}.grammar-stage-head p{margin:0}.grammar-concept{padding:25px;position:relative}.grammar-concept-number{color:var(--color-accent);font-family:var(--font-mono);font-size:.8rem;font-weight:700}.grammar-concept h3{margin:4px 0 9px;font-size:1.27rem}.grammar-concept>p{color:var(--color-muted);margin:0 0 20px;line-height:1.75}.grammar-examples{gap:9px;display:grid}.grammar-example{background:var(--color-surface-2);border-left:3px solid var(--color-accent);border-radius:0 8px 8px 0;gap:3px;padding:13px 15px;display:grid}.grammar-example strong{font-size:.97rem;font-weight:650}.grammar-example span,.grammar-example small{color:var(--color-muted)}.grammar-example 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0;font-size:.76rem}.cert-options{gap:10px;margin-top:26px;display:grid}.cert-option{border:1px solid var(--color-border-strong);border-radius:var(--radius);background:var(--color-surface);width:100%;min-height:58px;color:var(--color-text);font:inherit;text-align:left;cursor:pointer;grid-template-columns:34px minmax(0,1fr) 20px;align-items:center;gap:12px;padding:10px 14px;display:grid;position:relative}.cert-option:hover:not([data-disabled=true]){border-color:var(--color-accent)}.cert-option:focus-within{outline:2px solid var(--color-accent);outline-offset:2px}.cert-option-input{opacity:0;width:1px;height:1px;margin:0;position:absolute}.cert-option>span{border:1px solid var(--color-border);border-radius:var(--radius-sm);width:32px;height:32px;color:var(--color-muted);font:650 .78rem 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0}.cert-feedback>strong{color:var(--color-red)}.cert-feedback[data-correct=true]>strong{color:var(--color-green)}.cert-feedback>small{color:var(--color-muted);margin-top:4px;font-size:.68rem;display:block}.cert-feedback p{color:var(--color-muted);margin:7px 0 0;font-size:.86rem;line-height:1.65}.cert-feedback .cert-correct-answer{color:var(--color-text);font-weight:600}.cert-test-actions{justify-content:flex-end;align-items:center;gap:18px;margin-top:18px;display:flex}.cert-test-actions>span{color:var(--color-muted);order:-1;margin-right:auto;font-size:.74rem}.cert-result{max-width:880px;margin:48px auto 0}.cert-result-score{border-bottom:1px solid var(--color-border-strong);grid-template-columns:1fr auto;align-items:end;gap:4px 28px;padding-bottom:28px;display:grid}.cert-result-score>span{color:var(--color-muted);font-size:.78rem}.cert-result-score h2{color:var(--color-accent);font:650 clamp(3.7rem, 9vw, 7rem)/.82 var(--font-display);letter-spacing:-.04em;grid-area:1/2/3;margin:0;scroll-margin-top:90px}.cert-result-score p{margin:0;font-size:1.15rem}.cert-domain-results{gap:16px;padding:28px 0;display:grid}.cert-domain-results>div{grid-template-columns:minmax(150px,.55fr) minmax(180px,1fr) 48px;align-items:center;gap:18px;display:grid}.cert-domain-results span{font-size:.82rem}.cert-domain-results strong{text-align:right;font:650 .78rem var(--font-mono)}.cert-performance{border-top:1px solid var(--color-border-strong);margin-top:42px;padding-top:30px}.cert-performance-heading{justify-content:space-between;align-items:end;gap:24px;display:flex}.cert-performance-heading h3{letter-spacing:-.02em;margin:0 0 6px;font-size:1.35rem}.cert-performance-heading p{max-width:56ch;color:var(--color-muted);margin:0;font-size:.8rem;line-height:1.55}.cert-performance-heading>span{color:var(--color-muted);font:600 .71rem var(--font-mono);white-space:nowrap;flex:none}.cert-performance-signals{grid-template-columns:1fr 1fr;gap:20px;margin:24px 0 20px;display:grid}.cert-performance-signals>div{border-top:2px solid var(--color-border-strong);align-content:start;gap:3px;min-height:112px;padding:15px 0;display:grid}.cert-performance-signals>div[data-state=strong]{border-color:var(--color-green)}.cert-performance-signals>div[data-state=attention]{border-color:var(--color-red)}.cert-performance-signals span{color:var(--color-muted);font-size:.7rem}.cert-performance-signals strong{font-size:.95rem;line-height:1.35}.cert-performance-signals small{color:var(--color-muted);font:600 .72rem var(--font-mono)}.cert-performance-signals button{width:fit-content;min-height:34px;color:var(--color-accent);font:650 .76rem var(--font-body);cursor:pointer;text-underline-offset:4px;background:0 0;border:0;align-items:center;gap:6px;margin-top:7px;padding:0;text-decoration:underline;display:inline-flex}.cert-performance-list{border-top:1px solid var(--color-border);margin:0;padding:0;list-style:none;display:grid}.cert-performance-list li{border-bottom:1px solid var(--color-border);grid-template-columns:minmax(180px,.65fr) minmax(160px,1fr) 44px;align-items:center;gap:18px;min-height:70px;display:grid}.cert-performance-list li>div:first-child{grid-template-columns:34px minmax(0,1fr);gap:2px 8px;display:grid}.cert-performance-list li>div:first-child>span{color:var(--color-muted);font:600 .7rem var(--font-mono);grid-row:1/3}.cert-performance-list li strong{font-size:.8rem;font-weight:650;line-height:1.3}.cert-performance-list li small{color:var(--color-muted);font-size:.69rem}.cert-performance-list .progress-fill{background:var(--color-accent)}.cert-performance-list li[data-state=strong] .progress-fill{background:var(--color-green)}.cert-performance-list li[data-state=attention] .progress-fill{background:var(--color-red)}.cert-performance-list b{text-align:right;font:650 .78rem var(--font-mono)}.cert-paywall{border-radius:var(--radius-lg);color:#f5f3ec;background:#23302e;gap:26px;margin-top:12px;padding:clamp(24px,4vw,40px);display:grid;box-shadow:0 20px 45px #0f181633}.cert-paywall-heading{grid-template-columns:auto minmax(0,1fr);align-items:start;gap:16px 20px;display:grid}.cert-paywall-lock{border-radius:var(--radius);color:#abc3ff;border:1px solid #57665f;place-items:center;width:44px;height:44px;display:grid}.cert-paywall h3{letter-spacing:-.025em;max-width:24ch;margin:0 0 8px;font-size:clamp(1.35rem,3vw,1.8rem)}.cert-paywall p{color:#c7d2cc;margin:0;line-height:1.6}.cert-paywall-benefits{border-block:1px solid #465550;flex-wrap:wrap;gap:10px 24px;margin:0;padding:15px 0;list-style:none;display:flex}.cert-paywall-benefits li{color:#e8eee9;align-items:center;gap:8px;font-size:.8rem;font-weight:600;display:inline-flex}.cert-paywall-benefits svg{color:#9fd3b5;flex:none}.cert-paywall-plans{border-block:1px solid #465550;grid-template-columns:1fr 1fr;display:grid}.cert-paywall-plans article{align-content:start;gap:18px;min-width:0;padding:24px clamp(18px,3vw,30px);display:grid}.cert-paywall-plans article+article{border-left:1px solid #465550}.cert-paywall-plans article[data-featured=true]{background:#2b3b38}.cert-paywall-plan-heading{min-height:82px}.cert-paywall-plan-heading>span{color:#15233a;background:#abc3ff;border-radius:999px;width:fit-content;margin-bottom:8px;padding:4px 9px;font-size:.68rem;font-weight:750;display:inline-flex}.cert-paywall-plan-heading h4{letter-spacing:-.01em;margin:0 0 5px;font-size:1rem}.cert-paywall-plan-heading p{font-size:.76rem;line-height:1.45}.cert-paywall-price{align-items:baseline;gap:8px;display:flex}.cert-paywall-price strong{color:#fff;font:650 clamp(2rem, 5vw, 2.8rem)/1 var(--font-display);letter-spacing:-.035em;font-variant-numeric:tabular-nums}.cert-paywall-price 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