:root{color-scheme:light;--ink:#132b40;--muted:#657684;--teal:#12887e;--dark:#101f30;--bg:#f5f6f2;--line:#dfe5e3;--correct:#117d61;--wrong:#b64a40;--amber:#e1ad53;--radius:18px}
*{box-sizing:border-box}body{margin:0;background:var(--bg);color:var(--ink);font-family:Inter,ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;line-height:1.5}button,input,select{font:inherit}button{cursor:pointer}button:disabled{cursor:default}button,a,input,select{outline-offset:5px}button:focus-visible,a:focus-visible,input:focus-visible,select:focus-visible{outline:3px solid #d79529}button{color:inherit}svg{display:block;width:24px;height:24px;fill:none;stroke:currentColor;stroke-width:1.7;stroke-linecap:round;stroke-linejoin:round}button{border:0;background:none}a{color:var(--teal)}.header{background:var(--dark);color:#eef4f5}.header-inner{max-width:1480px;margin:auto;display:flex;align-items:center;justify-content:space-between;padding:23px 44px;gap:24px}.brand{display:flex;align-items:center;gap:14px;color:white;font-size:24px;letter-spacing:-.7px;padding:0}.brand b{font-weight:450}.brand-divider{color:#6f8a9c;margin:0 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46px}.eyebrow{font-size:12px;letter-spacing:2px;font-weight:750;text-transform:uppercase;color:var(--teal);display:flex;align-items:center;gap:9px}.eyebrow .dot{width:7px;height:7px;border-radius:50%;background:var(--teal)}h1,h2,h3,p{margin:0}h1{font-size:clamp(38px,4.5vw,62px);line-height:1.09;letter-spacing:-2.8px;font-weight:650;margin:20px 0 20px}h1 em{font-style:normal;color:var(--teal)}.hero-copy{font-size:17px;line-height:1.75;max-width:550px;color:var(--muted)}.hero-note{display:flex;align-items:center;gap:8px;margin-top:22px;font-size:13px;color:var(--muted)}.hero-note svg{width:16px;height:16px}.resume-panel{position:relative;background:#e7eeea;border-radius:24px;padding:28px 30px;overflow:hidden}.resume-top{font-size:12px;letter-spacing:1.5px;color:#526f68;text-transform:uppercase;font-weight:700}.resume-panel h2{font-size:24px;line-height:1.35;letter-spacing:-.6px;margin:14px 0 10px}.resume-panel p{color:#526d66;font-size:14px;max-width:350px}.resume-panel .button{margin-top:24px}.steps{display:flex;gap:12px;margin-top:24px}.step{flex:1;padding-top:15px;border-top:1px solid #b9cec4;font-size:12px;color:#42635a}.step b{display:block;font-size:20px;font-weight:500;margin-bottom:5px;color:var(--teal)}.section-heading{display:flex;justify-content:space-between;align-items:center;gap:20px;margin:24px 0 20px}.section-heading h2{font-size:23px;letter-spacing:-.5px}.section-heading p{font-size:13px;color:var(--muted)}.language-toggle{display:flex;gap:3px;border:1px solid var(--line);background:#ecefea;padding:4px;border-radius:10px}.language-toggle button{font-size:12px;padding:6px 12px;border-radius:7px;color:var(--muted)}.language-toggle button.active{background:white;color:var(--ink);box-shadow:0 1px 4px #152f4012}.domain-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:17px}.domain-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:23px 24px;text-align:left;display:flex;flex-direction:column;min-height:240px;transition:transform .15s,border-color .15s,box-shadow .15s}.domain-card:hover{transform:translateY(-3px);border-color:#8fb7aa;box-shadow:0 10px 25px #15392908}.domain-card:focus-visible{outline-offset:2px}.domain-top{display:flex;justify-content:space-between;align-items:center;margin-bottom:22px}.domain-icon{width:40px;height:40px;background:#edf4f0;color:var(--teal);border-radius:11px;display:grid;place-items:center}.domain-number{font-family:ui-monospace,monospace;font-size:12px;color:#80928f}.domain-card h3{font-size:19px;letter-spacing:-.35px;font-weight:650;margin-bottom:5px}.domain-card .english{font-size:11px;color:#73848c;margin-bottom:12px}.domain-card .description{font-size:13px;color:var(--muted);line-height:1.7;margin-bottom:22px}.card-bottom{display:flex;align-items:center;justify-content:space-between;font-size:12px;color:#71857e;margin-top:auto}.card-bottom span:last-child{display:flex;align-items:center;gap:8px;color:var(--teal)}.card-bottom svg{height:16px;width:16px}.progress-track{height:3px;background:#e9eeea;border-radius:3px;overflow:hidden;margin-top:14px}.progress-track i{display:block;height:100%;background:var(--teal);max-width:100%;min-width:0}.review-card{background:var(--dark);color:#fff;border-color:var(--dark)}.review-card .domain-icon{background:#1f3c47;color:#75d3c4}.review-card h3{color:white}.review-card .description{color:#acbec9}.review-card .card-bottom span{color:#90dfcd}.quiet-label{font-size:12px;color:var(--muted)}.footer{padding:24px 44px;max-width:1376px;margin:auto;border-top:1px solid var(--line);display:flex;justify-content:space-between;font-size:11px;letter-spacing:.1px;color:#7b8a8e;gap:18px}.footer button{font-size:11px;color:#56756b;padding:0}.footer-dot{margin:0 10px}.button{display:inline-flex;align-items:center;justify-content:center;gap:10px;background:var(--teal);color:white;font-weight:600;padding:13px 22px;border-radius:10px;font-size:14px;min-height:47px}.button svg{width:17px;height:17px}.button:hover{background:#0e756d}.button.secondary{background:#fff;color:var(--ink);border:1px solid var(--line)}.button.secondary:hover{border-color:#9ab8ad}.button.ghost{background:none;border:1px solid #bfcec7;color:#385c4f}.button:disabled{opacity:.45}.text-button{font-size:13px;color:var(--teal);display:inline-flex;align-items:center;gap:8px;padding:8px 0}.text-button svg{height:17px;width:17px}.back-row{display:flex;align-items:center;gap:9px;font-size:12px;color:var(--muted);margin-bottom:23px}.back-row button{color:var(--teal);padding:0;display:flex;align-items:center;gap:6px}.back-row svg{width:15px;height:15px}.setup{max-width:1000px;margin:auto}.setup h1,.dictionary h1,.progress-page 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svg{width:15px;height:15px}.study-shell{max-width:1200px;margin:auto}.session-head{display:flex;justify-content:space-between;align-items:center;margin-bottom:15px;gap:20px}.session-meta{font-size:13px;color:var(--muted)}.session-meta b{color:var(--ink);font-weight:650}.session-progress{height:4px;background:#dfe7e1;border-radius:4px;overflow:hidden;margin:0 0 23px}.session-progress i{display:block;background:var(--teal);height:100%}.question-panel{background:white;border:1px solid var(--line);border-radius:24px;padding:34px 38px}.question-label{display:flex;gap:12px;align-items:center;color:var(--muted);font-size:12px;margin-bottom:20px}.pill{display:inline-flex;border:1px solid #d4e4dd;background:#f0f7f2;border-radius:6px;padding:3px 8px;color:#397b68;font-size:10px;font-weight:750;letter-spacing:.8px}.question-id{font-family:ui-monospace,monospace;font-size:11px;color:#81948d;margin-left:auto}.question-text{font-size:clamp(23px,2.4vw,33px);line-height:1.5;font-weight:550;letter-spacing:-.55px;max-width:1100px;white-space:pre-line}.options{display:grid;grid-template-columns:1fr 1fr;gap:13px;margin-top:29px}.option{display:flex;align-items:flex-start;gap:17px;text-align:left;border:1px solid #d8e1dc;border-radius:12px;background:#fbfcfa;min-height:96px;padding:20px 21px;transition:border-color .12s,background .12s}.option:not(:disabled):hover{background:#f0f7f3;border-color:#7eaf9d}.option-letter{border:1px solid #cedbd3;background:white;border-radius:8px;min-width:34px;height:34px;display:grid;place-items:center;color:#667f73;font-size:13px;font-weight:700;margin-top:1px}.option-body{font-size:15px;line-height:1.65;flex:1;min-width:0}.option-status{display:block;font-size:11px;font-weight:700;margin-top:7px}.option.correct{border-color:#3c9a79;background:#edf8f1;color:#146f50}.option.correct .option-letter{background:#1d8964;color:white;border-color:#1d8964}.option.wrong{border-color:#cc877c;background:#fcf0ed;color:#a34438}.option.wrong .option-letter{background:#b55649;color:white;border-color:#b55649}.option.dimmed{opacity:.66}.answer-bottom{display:flex;justify-content:space-between;align-items:center;margin-top:24px;gap:20px;min-height:48px}.answer-status{font-size:14px;color:var(--muted)}.answer-status strong{color:var(--correct)}.answer-status.error strong{color:var(--wrong)}.answer-status small{display:block;margin-top:4px;font-size:12px}.keyboard-hint{font-size:11px;color:#8a9795;margin:16px 0 0;text-align:center}.keyboard-hint kbd{font:inherit;background:#edf0eb;padding:2px 6px;border:1px solid #dae0d9;border-radius:4px;margin:0 2px}.translation{padding:17px 20px;background:#f3f5ee;border-left:3px solid var(--amber);font-size:15px;margin-top:18px;border-radius:0 8px 8px 0;color:#59685c}.question-actions{display:flex;gap:18px;margin-top:13px;justify-content:flex-start}.question-actions button{font-size:12px}.explanation-head{display:flex;gap:15px;align-items:center;margin-bottom:23px}.result-icon{display:grid;place-items:center;width:42px;height:42px;border-radius:50%;background:#e0f0e5;color:var(--correct)}.result-icon.bad{background:#fae9e4;color:var(--wrong)}.explanation-head h2{font-size:21px;line-height:1.4}.explanation-head p{font-size:12px;color:var(--muted)}.explanation-question{font-size:23px;line-height:1.6;letter-spacing:-.3px}.explanation-question mark{background:#fbebc7;color:#8b5c12;padding:1px 3px;border-radius:3px}.question-ru{font-size:15px;color:var(--muted);line-height:1.75;margin-top:13px}.correct-box{margin-top:24px;background:#ebf6ef;border:1px solid #c5e4d1;border-radius:13px;padding:22px 25px}.small-label{font-size:10px;letter-spacing:1.2px;text-transform:uppercase;color:var(--teal);font-weight:750;margin-bottom:11px}.correct-answer-en{font-size:19px;color:#1c7658;font-weight:600;line-height:1.6}.correct-answer-ru{font-size:14px;color:#537867;margin-top:6px}.logic{font-size:16px;line-height:1.85;margin-top:21px;color:#3b4e58}.exam-notes{margin-top:19px;display:flex;gap:9px;flex-wrap:wrap}.exam-note{font-size:12px;padding:9px 13px;border-radius:8px;background:#f9f2e5;color:#7f673b}.exam-note b{margin-right:8px}.cue-grid{display:grid;grid-template-columns:1fr 1fr;gap:18px;margin-top:27px}.cue-section{border:1px solid var(--line);border-radius:14px;padding:22px 24px}.cue-section h3{font-size:14px;display:flex;align-items:center;gap:8px;margin-bottom:20px}.cue-section h3 svg{width:17px;height:17px;color:var(--teal)}.cue{padding:14px 0;border-top:1px solid #e9eeea}.cue:first-of-type{padding-top:0;border-top:0}.cue-en{font-size:15px;font-weight:650;color:#385c50}.cue-ru{font-size:13px;color:#4a6357;margin-top:4px}.cue p{font-size:12px;line-height:1.75;color:var(--muted);margin-top:8px}.wrong-details{border-top:1px solid var(--line);margin-top:24px;padding-top:20px}.wrong-details summary{cursor:pointer;font-size:13px;color:#4b6459;font-weight:600}.distractor{display:grid;grid-template-columns:27px 1fr;gap:12px;margin-top:18px;padding-bottom:17px;border-bottom:1px solid #edf0eb;font-size:13px}.distractor b{color:#7f9089}.distractor-en{font-weight:550}.distractor-ru{color:var(--muted);font-size:12px;margin-top:4px}.distractor p{margin-top:8px;color:#52685d;font-size:12px;line-height:1.7}.study-bottom{display:flex;justify-content:space-between;align-items:center;margin-top:22px;gap:16px}.summary{max-width:820px;margin:30px auto}.summary h1{font-size:44px;letter-spacing:-1.5px}.stats-row{display:grid;grid-template-columns:repeat(3,1fr);gap:15px;margin:30px 0}.stat{padding:23px;background:white;border:1px solid var(--line);border-radius:14px}.stat b{display:block;font-size:38px;font-weight:550;letter-spacing:-1.5px}.stat span{font-size:12px;color:var(--muted)}.stat.green b{color:var(--teal)}.summary-actions{display:flex;flex-wrap:wrap;gap:10px;margin:25px 0}.summary-list{background:white;border:1px solid var(--line);border-radius:15px;padding:15px 24px}.summary-item{display:flex;align-items:flex-start;gap:12px;padding:14px 0;border-bottom:1px solid var(--line);font-size:13px}.summary-item:last-child{border:0}.summary-item svg{flex-shrink:0;width:17px;height:17px;margin-top:3px;color:var(--correct)}.summary-item.bad svg{color:var(--wrong)}.summary-item em{font-size:11px;color:var(--muted);font-style:normal;display:block;margin-top:3px}.dictionary,.progress-page{max-width:1120px;margin:auto}.dictionary-controls{display:grid;grid-template-columns:1fr 260px;gap:15px;margin:28px 0}.terms{display:grid;grid-template-columns:1fr 1fr;gap:15px}.term-card{background:white;border:1px solid var(--line);border-radius:15px;padding:23px}.term-card h3{font-size:18px;color:var(--teal)}.term-card .term-ru{font-size:14px;margin:7px 0 13px;font-weight:550}.term-card p{font-size:13px;color:var(--muted);line-height:1.7}.term-example{background:#f2f6f0;padding:13px;margin-top:15px;border-radius:8px;font-size:12px;color:#547160;line-height:1.75}.empty{padding:45px;border:1px dashed #bdcfc5;border-radius:16px;text-align:center;color:var(--muted);background:#fff}.progress-table{width:100%;border-collapse:collapse;background:white;border:1px solid var(--line);margin-top:25px;font-size:14px}.progress-table th{text-align:left;background:#edf2ec;color:var(--muted);font-size:12px;font-weight:550}.progress-table th,.progress-table td{padding:19px 20px;border-bottom:1px solid var(--line)}.progress-table td small{display:block;color:var(--muted);font-size:11px}.progress-help{font-size:13px;color:var(--muted);line-height:1.8;margin-top:18px}.progress-tools{margin-top:22px;display:flex;gap:16px;flex-wrap:wrap}.danger{color:var(--wrong)}dialog{width:min(680px,92vw);max-height:85vh;border:1px solid var(--line);border-radius:20px;background:var(--bg);color:var(--ink);padding:28px}dialog::backdrop{background:#10293980}.modal-head{display:flex;justify-content:space-between;align-items:center;margin-bottom:20px;gap:20px}.modal-head h2{font-size:22px}.modal-head .icon-button{border-color:var(--line)}.source-domain{padding:14px 0;border-top:1px solid var(--line)}.source-domain h3{font-size:15px;margin-bottom:6px}.source-domain a{font-size:13px;margin-right:15px}.modal-copy{font-size:13px;color:var(--muted);line-height:1.8;margin:15px 0}#toast{position:fixed;bottom:30px;left:50%;transform:translateX(-50%);padding:13px 20px;border-radius:10px;background:var(--dark);color:white;font-size:13px;box-shadow:0 6px 25px #0b182b35;z-index:20;opacity:0;pointer-events:none;transition:opacity .2s;max-width:90vw}#toast.visible{opacity:1}body:fullscreen{overflow:auto}.session-head .pill{white-space:nowrap}.mobile-only{display:none}
.option-translation{display:block;border-top:1px solid #dce4d9;margin-top:9px;padding-top:9px;font-size:12px;color:var(--muted)}.correct-answer-en mark{background:#ccebd6;color:#175c44;padding:1px 3px;border-radius:3px}.question-label>span:nth-child(2){overflow-wrap:anywhere}.question-id{flex-shrink:0}.session-meta{text-align:center}main:focus{outline:none}.resume-panel .button.ghost{margin-left:8px;font-size:12px}
@media(min-width:1500px){main{padding-top:56px}.question-text{font-size:34px}}
@media(max-width:1050px){.header-inner{padding:20px 28px}.header nav{gap:20px}main{padding:32px 28px 55px}.hero{gap:30px}.domain-grid{grid-template-columns:1fr 1fr}.hero h1{font-size:46px}.question-panel{padding:28px}.question-text{font-size:28px}.form-grid{grid-template-columns:1fr 1fr}.field:first-child{grid-column:1/-1}.option{padding:17px;gap:13px}.option-body{font-size:14px}}
@media(max-width:700px){.header-inner{padding:17px 20px;gap:14px;flex-wrap:wrap}.brand{font-size:22px}.header nav{order:3;flex-basis:100%;justify-content:space-between;gap:15px;padding-top:5px}.header nav button{font-size:13px}.utilities{margin-left:auto}.icon-button{height:35px;width:35px}.header nav button.active{border-bottom-color:#64c8ae}main{padding:28px 18px 45px;min-height:70vh}.hero{grid-template-columns:1fr;gap:25px;margin-bottom:32px}.hero h1{font-size:43px;letter-spacing:-1.9px;margin:16px 0}.hero-copy{font-size:15px}.hero-note{margin-top:16px}.resume-panel{padding:23px 24px}.resume-panel h2{font-size:21px}.resume-panel .button{margin-top:18px}.steps{margin-top:16px}.section-heading{align-items:center}.section-heading h2{font-size:21px}.section-heading p{display:none}.domain-grid{grid-template-columns:1fr;gap:12px}.domain-card{min-height:190px;padding:21px}.domain-top{margin-bottom:15px}.domain-card h3{font-size:20px}.domain-card .description{margin-bottom:14px}.footer{margin:0 18px;padding:22px 0;display:block;font-size:10px}.footer>span{display:block;margin-top:8px}.footer button{font-size:10px}.question-panel{padding:23px 20px;border-radius:17px}.question-text{font-size:23px;line-height:1.55;letter-spacing:-.35px}.question-label{font-size:10px;margin-bottom:16px;gap:8px}.question-id{font-size:10px}.options{grid-template-columns:1fr;gap:10px;margin-top:24px}.option{min-height:80px;padding:17px 15px;gap:12px}.option-body{font-size:14px}.option-letter{min-width:29px;height:29px;font-size:12px}.answer-bottom{align-items:stretch;flex-direction:column;margin-top:20px;gap:15px}.answer-bottom .button{width:100%}.keyboard-hint{display:none}.session-head{gap:10px}.session-meta{font-size:11px}.back-row{font-size:11px;line-height:1.6;flex-wrap:wrap}.setup h1,.dictionary h1,.progress-page h1{font-size:32px;letter-spacing:-1px}.setup-box{padding:22px}.form-grid{grid-template-columns:1fr}.field:first-child{grid-column:auto}.setup-foot{align-items:stretch;flex-direction:column}.session-notes{gap:13px;font-size:11px}.explanation-question{font-size:19px}.question-ru{font-size:13px}.correct-box{padding:18px}.correct-answer-en{font-size:17px}.correct-answer-ru{font-size:13px}.logic{font-size:14px;line-height:1.8}.cue-grid{grid-template-columns:1fr}.cue-section{padding:20px}.study-bottom{align-items:stretch;flex-direction:column}.study-bottom .button{width:100%}.stats-row{gap:9px}.stat{padding:16px 13px}.stat b{font-size:30px}.stat span{font-size:10px}.summary h1{font-size:35px}.dictionary-controls{grid-template-columns:1fr}.terms{grid-template-columns:1fr}.progress-table{font-size:12px}.progress-table th,.progress-table td{padding:13px 10px}.progress-table th:first-child{width:45%}.progress-table td small{font-size:9px}.progress-help{font-size:12px}.modal-head h2{font-size:19px}dialog{padding:23px}.lead{font-size:14px}.eyebrow{font-size:10px;letter-spacing:1.4px}}
@media(prefers-reduced-motion:reduce){*,*:before,*:after{transition:none!important;scroll-behavior:auto!important}}