@font-face{font-family:Onest;font-weight:400;font-display:swap;src:url(/fonts/onest-0.ttf)format("truetype")}@font-face{font-family:Onest;font-weight:500;font-display:swap;src:url(/fonts/onest-1.ttf)format("truetype")}@font-face{font-family:Onest;font-weight:600;font-display:swap;src:url(/fonts/onest-2.ttf)format("truetype")}@font-face{font-family:Onest;font-weight:700;font-display:swap;src:url(/fonts/onest-3.ttf)format("truetype")}:root{--font:Onest, system-ui, sans-serif;--bg:#faf7f2;--surface:#fffdf9;--ink:#24342f;--muted:#62716a;--accent:#0e6b66;--accent-hover:#095651;--sage:#e6eee7;--line:#dedfd5;--peach:#f3d8bc;--orange:#b4602e;--soft:#f0ede5;--white:#fff;--right:#27694c;--right-bg:#e5f0e7;--wrong:#963e2c;--wrong-bg:#faece3;--shadow:0 20px 65px #263d2c0d;--cta-bg:#125b52;--cta-ink:#f7f9ef;--cta-muted:#c2d8cf;--cta-glyph:#ffffff07;--cta-btn:#f1dbc0;--cta-btn-ink:#24342f;--cta-btn-hover:#f9e9d6;color-scheme:light}@media (prefers-color-scheme:dark){:root:not([data-theme=light]){--bg:#151e1b;--surface:#1e2a25;--ink:#edf1e7;--muted:#b2bdb5;--accent:#79d0bd;--accent-hover:#a1e2d4;--sage:#283c32;--line:#3d4c43;--peach:#654b32;--orange:#e9af7b;--soft:#26322b;--white:#152b24;--right:#a3dcc0;--right-bg:#284636;--wrong:#f0b19a;--wrong-bg:#49352d;--shadow:0 20px 65px #0002;color-scheme:dark}}:root[data-theme=dark]{--bg:#151e1b;--surface:#1e2a25;--ink:#edf1e7;--muted:#b2bdb5;--accent:#79d0bd;--accent-hover:#a1e2d4;--sage:#283c32;--line:#3d4c43;--peach:#654b32;--orange:#e9af7b;--soft:#26322b;--white:#152b24;--right:#a3dcc0;--right-bg:#284636;--wrong:#f0b19a;--wrong-bg:#49352d;--shadow:0 20px 65px #0002;color-scheme:dark}*{box-sizing:border-box}html{scroll-behavior:smooth;scroll-padding-top:100px}body{background:var(--bg);color:var(--ink);font-family:var(--font);-webkit-font-smoothing:antialiased;margin:0;font-size:16px;line-height:1.6}button,input{font:inherit}a{color:inherit;text-decoration:none}button{cursor:pointer}button,a{-webkit-tap-highlight-color:transparent}button{color:inherit}button:disabled{opacity:.45;cursor:not-allowed}button:focus-visible,a:focus-visible,summary:focus-visible{outline:3px solid var(--accent);outline-offset:5px}[tabindex="-1"]:focus{outline:none}h1,h2,h3,p{margin:0}h1,h2,h3{letter-spacing:-.045em;font-weight:500;line-height:1.14}h1{font-size:clamp(43px,5.1vw,72px)}h2{font-size:clamp(32px,3.3vw,46px)}h3{font-size:24px}svg{vertical-align:middle;fill:none;stroke:currentColor;stroke-width:1.65px;stroke-linecap:round;stroke-linejoin:round;flex:none;width:22px;height:22px}button svg{pointer-events:none}.container{width:min(1192px,100% - 80px);margin:auto}.skip{z-index:99;background:var(--accent);color:var(--white);padding:12px 20px;position:fixed;top:-100px;left:20px}.skip:focus{top:12px}.site-header{border-bottom:1px solid var(--line);background:var(--bg);z-index:20;position:relative}.header-inner{justify-content:space-between;align-items:center;gap:30px;min-height:94px;display:flex}.brand{white-space:nowrap;align-items:center;gap:10px;display:inline-flex}.brand-mark{background:var(--accent);color:var(--white);border-radius:11px;place-items:center;width:36px;height:36px;padding-bottom:5px;font-size:29px;line-height:1;display:grid}.wordmark{letter-spacing:-1.3px;font-size:27px;font-weight:600}.dot{color:var(--orange)}.header-nav{gap:28px;font-size:14px;display:flex}.header-nav a{padding:10px 0;position:relative}.header-nav a[aria-current=page]:after{content:"";background:var(--accent);width:18px;height:2px;position:absolute;bottom:4px;left:0}.header-nav a:hover{color:var(--accent)}.header-nav .nav-today{color:var(--accent);font-weight:600}html[data-learner] .for-newcomer,html:not([data-learner]) .for-learner{display:none}html[data-redirect] body{visibility:hidden}.header-tools{align-items:center;gap:14px;display:flex}.language-picker{border:1px solid var(--line);border-radius:8px;padding:3px;display:flex}.language-picker a{border-radius:5px;place-items:center;min-width:36px;height:32px;font-size:12px;font-weight:500;display:grid}.language-picker a[aria-current=true]{background:var(--accent);color:var(--white)}.icon-btn{border:1px solid var(--line);background:0 0;border-radius:50%;place-items:center;width:42px;height:42px;display:grid}.btn{background:var(--accent);min-height:54px;color:var(--white);border:1px solid #0000;border-radius:9px;justify-content:center;align-items:center;gap:24px;padding:14px 23px;font-size:15px;font-weight:500;line-height:1.5;transition:background .18s;display:inline-flex}.btn:hover{background:var(--accent-hover)}.btn.secondary{color:var(--ink);border-color:var(--line);background:0 0}.btn.secondary:hover{background:var(--soft)}.btn.small{gap:14px;min-height:42px;padding:9px 15px;font-size:13px}.text-link{min-height:48px;text-decoration:underline;text-decoration-color:var(--line);text-underline-offset:7px;background:0 0;border:0;align-items:center;gap:13px;padding:0;font-size:14px;display:inline-flex}.text-link:hover{color:var(--accent)}.eyebrow{letter-spacing:.17em;text-transform:uppercase;align-items:center;gap:10px;margin-bottom:25px;font-size:11px;font-weight:600;display:flex}.eyebrow .pin{background:var(--orange);border-radius:50%;width:6px;height:6px}.muted{color:var(--muted)}.accent{color:var(--accent)}.hero{grid-template-columns:1.04fr 1fr;align-items:center;gap:64px;padding:73px 0 66px;display:grid}.hero h1{max-width:650px}.hero h1 span{color:var(--accent);display:inline-block}.hero-lead{color:var(--muted);max-width:465px;margin-top:25px;font-size:17px;line-height:1.8}.hero-actions{flex-wrap:wrap;align-items:center;gap:25px;margin-top:30px;display:flex}.hero-fine{color:var(--muted);align-items:center;gap:8px;margin-top:17px;font-size:12px;display:flex}.hero-fine svg{width:15px;height:15px}.practice-stage{isolation:isolate;padding:30px 21px 36px;position:relative}.practice-stage:before{content:"";background:var(--sage);z-index:-2;border-radius:45% 43% 37% 38%;position:absolute;inset:5px 0 5px 20px;transform:rotate(7deg)}.practice-stage:after{content:"";background:var(--peach);border:1px solid var(--line);z-index:-1;border-radius:17px;position:absolute;inset:35px 35px 46px;transform:rotate(-5deg)}.exercise-paper{background:var(--surface);border:1px solid var(--line);box-shadow:var(--shadow);border-radius:16px;padding:29px 30px 24px;transform:rotate(1.5deg)}.exercise-top{color:var(--muted);justify-content:space-between;align-items:center;margin-bottom:31px;font-size:11px;display:flex}.exercise-top span:first-child{align-items:center;gap:8px;display:flex}.exercise-top svg{width:16px;height:16px}.paper-label{color:var(--muted);margin-bottom:16px;font-size:13px}.sentence{letter-spacing:-.035em;font-size:clamp(24px,2.2vw,30px);font-weight:500;line-height:1.6}.blank{border-bottom:2px dashed var(--accent);min-width:90px;color:var(--accent);text-align:center;margin:0 4px;line-height:1.25;display:inline-block}.base-word{color:var(--muted);letter-spacing:0;margin-left:5px;font-size:16px;font-weight:400}.answer-options{grid-template-columns:repeat(3,1fr);gap:9px;margin:25px 0 19px;display:grid}.answer-option{border:1px solid var(--line);background:var(--surface);border-radius:8px;min-height:51px;padding:11px 12px;font-size:16px;transition:background .15s,border .15s;position:relative}.answer-option:hover:not(:disabled){border-color:var(--accent);background:var(--sage)}.answer-option[aria-pressed=true]{background:var(--sage);border-color:var(--accent);box-shadow:inset 0 0 0 1px var(--accent)}.answer-option.correct{background:var(--right-bg);border-color:var(--right);color:var(--right);opacity:1}.answer-option.incorrect{background:var(--wrong-bg);border-color:var(--wrong);color:var(--wrong);opacity:1}.demo-check{width:100%;min-height:48px}.paper-foot{color:var(--muted);justify-content:space-between;margin-top:20px;font-size:11px;display:flex}.paper-foot .steps{align-items:center;gap:4px;display:flex}.steps i{background:var(--line);border-radius:4px;width:18px;height:4px}.steps i:first-child{background:var(--accent)}.stage-note{color:var(--muted);font-family:Georgia,serif;font-size:15px;font-style:italic;position:absolute;bottom:0;right:23px;transform:rotate(-3deg)}.feedback{background:var(--right-bg);border:1px solid var(--line);border-radius:9px;margin-top:18px;padding:15px 17px;font-size:13px;line-height:1.7}.feedback.wrong{background:var(--wrong-bg)}.feedback strong{color:var(--right);margin-bottom:5px;font-size:14px;display:block}.feedback.wrong strong{color:var(--wrong)}.feedback strong svg{width:17px;height:17px;margin-right:6px}.feedback .text-link{min-height:30px;margin-top:6px;font-size:12px}.proof-strip{border-top:1px solid var(--line);border-bottom:1px solid var(--line);grid-template-columns:repeat(3,1fr);gap:30px;padding:25px 0;display:grid}.proof-item{align-items:center;gap:17px;display:flex}.proof-item+.proof-item{border-left:1px solid var(--line);padding-left:32px}.proof-number{letter-spacing:-.06em;white-space:nowrap;color:var(--accent);font-size:24px;font-weight:500}.proof-label{color:var(--muted);font-size:12px;line-height:1.7}.section{padding:84px 0}.section-heading{justify-content:space-between;align-items:flex-end;gap:30px;margin-bottom:33px;display:flex}.section-heading h2{max-width:630px}.section-heading .eyebrow{margin-bottom:15px}.section-lead{color:var(--muted);max-width:500px;margin-top:22px;font-size:16px;line-height:1.8}.learning-layout{grid-template-columns:1fr 1.04fr;align-items:start;gap:100px;display:grid}.learning-copy h2{max-width:450px}.learning-copy .text-link{margin-top:25px}.topics-preview{border-top:1px solid var(--line);margin-top:3px}.topic-preview{border-bottom:1px solid var(--line);justify-content:space-between;align-items:center;gap:20px;padding:22px 0;display:flex}.topic-preview:hover .topic-name{color:var(--accent)}.topic-id{color:var(--muted);width:20px;font-size:12px}.topic-name{letter-spacing:-.025em;flex:1;font-size:19px;font-weight:500}.topic-sub{color:var(--muted);letter-spacing:0;margin-top:3px;font-size:12px;font-weight:400;display:block}.topic-arrow{border:1px solid var(--line);border-radius:50%;place-items:center;width:31px;height:31px;display:grid}.topic-arrow svg{width:15px;height:15px}.peach-section{background:var(--soft);padding:64px 0}.process-grid{grid-template-columns:repeat(3,1fr);gap:46px;margin-top:39px;display:grid}.process-item{border-top:1px solid var(--line);padding-top:21px}.process-num{color:var(--accent);margin-bottom:25px;font-size:13px;display:block}.process-item h3{margin-bottom:14px;font-size:23px}.process-item p{color:var(--muted);max-width:310px;font-size:14px;line-height:1.85}.cta-panel{background:var(--cta-bg);color:var(--cta-ink);border-radius:18px;justify-content:space-between;align-items:center;gap:40px;padding:44px 48px;display:flex;position:relative;overflow:hidden}.cta-panel:after{content:"ę";color:var(--cta-glyph);pointer-events:none;font-size:230px;position:absolute;top:-110px;right:300px}.cta-panel h2{max-width:600px;font-size:37px;position:relative}.cta-panel p{color:var(--cta-muted);max-width:510px;margin-top:13px;font-size:14px}.cta-panel .btn{background:var(--cta-btn);color:var(--cta-btn-ink);white-space:nowrap;position:relative}.cta-panel .btn:hover{background:var(--cta-btn-hover)}.faq-grid{grid-template-columns:1fr 1.1fr;gap:80px;display:grid}.faq-list details{border-bottom:1px solid var(--line)}.faq-list details:first-child{border-top:1px solid var(--line)}summary{cursor:pointer;justify-content:space-between;align-items:center;gap:20px;padding:20px 0;font-size:16px;font-weight:500;list-style:none;display:flex}summary::-webkit-details-marker{display:none}summary:after{content:"+";color:var(--accent);font-size:23px;font-weight:400}.faq-list details p{color:var(--muted);padding:0 35px 22px 0;font-size:14px;line-height:1.8}.site-footer{border-top:1px solid var(--line);padding:32px 0 25px}.footer-top{justify-content:space-between;align-items:center;gap:20px;margin-bottom:21px;display:flex}.footer-caption{color:var(--muted);font-size:12px}.footer-bottom{border-top:1px solid var(--line);color:var(--muted);justify-content:space-between;gap:40px;padding-top:20px;font-size:11px;line-height:1.8;display:flex}.footer-bottom p{max-width:730px}.footer-links{flex-direction:column;align-items:flex-end;display:flex}.footer-bottom a{text-underline-offset:4px;white-space:nowrap;text-decoration:underline}.page-head{padding:46px 0 42px}.breadcrumbs{color:var(--muted);align-items:center;gap:11px;margin-bottom:29px;font-size:12px;display:flex}.breadcrumbs svg{width:13px;height:13px}.page-head h1{font-size:clamp(38px,4.2vw,56px)}.page-head p{max-width:650px;color:var(--muted);margin-top:20px;font-size:17px;line-height:1.8}.curriculum-layout{grid-template-columns:265px 1fr;gap:65px;padding-bottom:75px;display:grid}.curriculum-aside{align-self:start;position:sticky;top:26px}.aside-note{background:var(--sage);border-radius:14px;margin-bottom:23px;padding:23px}.aside-note>svg{color:var(--accent);margin-bottom:16px}.aside-note h3{margin-bottom:13px;font-size:21px}.aside-note p{color:var(--muted);font-size:13px;line-height:1.8}.aside-note .btn{gap:8px;width:100%;margin-top:20px;padding:12px 10px;font-size:13px}.filter-label{letter-spacing:.13em;text-transform:uppercase;color:var(--muted);margin-bottom:10px;font-size:11px}.filter-buttons{gap:3px;display:grid}.filter-btn{text-align:left;background:0 0;border:0;border-radius:7px;justify-content:space-between;align-items:center;padding:13px;font-size:14px;display:flex}.filter-btn[aria-pressed=true]{background:var(--sage);color:var(--accent);font-weight:500}.filter-btn span{opacity:.7;font-size:11px}.curriculum-top{color:var(--muted);justify-content:space-between;align-items:center;padding:0 0 16px;font-size:12px;display:flex}.lesson-row{border-top:1px solid var(--line)}.lesson-row:last-child{border-bottom:1px solid var(--line)}.lesson-row summary{align-items:center;padding:22px 0}.lesson-row summary:after{font-size:21px}.lesson-title{flex:1}.lesson-title strong{letter-spacing:-.025em;font-size:19px;font-weight:500;display:block}.lesson-title small{color:var(--muted);margin-top:5px;font-size:12px;font-weight:400;display:block}.lesson-content{padding:0 0 25px 43px}.lesson-content p{color:var(--muted);font-size:14px;line-height:1.8}.lesson-example{border-left:2px solid var(--accent);background:var(--sage);letter-spacing:-.025em;margin:16px 0;padding:15px 19px;font-size:20px}.lesson-content .text-link{font-size:13px}.quiz-shell{width:min(720px,100% - 40px);margin:34px auto 65px}.quiz-top{color:var(--muted);justify-content:space-between;align-items:center;margin-bottom:19px;font-size:12px;display:flex}.quiz-top .text-link{min-height:32px;font-size:12px}.progress-track{background:var(--line);border-radius:6px;height:4px;overflow:hidden}.progress-track i{background:var(--accent);height:100%;transition:width .2s;display:block}.quiz-card{background:var(--surface);border:1px solid var(--line);box-shadow:var(--shadow);border-radius:17px;margin-top:25px;padding:37px 42px 32px}.quiz-kicker{text-transform:uppercase;letter-spacing:.1em;color:var(--muted);justify-content:space-between;align-items:center;margin-bottom:22px;font-size:11px;display:flex}.quiz-kicker span:first-child{color:var(--accent);background:var(--sage);border-radius:5px;padding:5px 9px}.quiz-card h1{letter-spacing:-.035em;margin-bottom:27px;font-size:26px}.quiz-card .sentence{min-height:95px;font-size:29px;line-height:1.7}.quiz-card .answer-options{margin:24px 0 26px}.quiz-actions{border-top:1px solid var(--line);justify-content:space-between;align-items:center;gap:20px;padding-top:24px;display:flex}.quiz-actions .text-link{color:var(--muted);font-size:13px}.quiz-fine{text-align:center;color:var(--muted);margin-top:21px;font-size:12px}.quiz-card .feedback{margin:0 0 24px;font-size:14px}.quiz-footer{color:var(--muted);justify-content:space-between;gap:20px;margin-top:20px;font-size:11px;display:flex}.result-layout{grid-template-columns:.95fr 1.05fr;align-items:start;gap:75px;padding:48px 0 70px;display:grid}.result-intro .eyebrow{margin-bottom:20px}.result-intro h1{font-size:clamp(39px,4.2vw,57px)}.result-intro>p{color:var(--muted);max-width:450px;margin-top:22px;font-size:16px;line-height:1.8}.score-display{align-items:center;gap:25px;margin:30px 0;display:flex}.score-ring{background:conic-gradient(var(--accent) var(--score), var(--line) 0);border-radius:50%;flex:none;place-items:center;width:120px;height:120px;display:grid}.score-ring>span{background:var(--bg);letter-spacing:-.06em;border-radius:50%;justify-content:center;align-items:baseline;gap:5px;width:101px;height:101px;padding-top:22px;font-size:40px;line-height:1.4;display:flex}.score-ring small{color:var(--muted);letter-spacing:-.02em;font-size:18px}.score-copy{max-width:215px;font-size:14px}.score-copy small{color:var(--muted);margin-top:6px;font-size:12px;display:block}.result-note{border-top:1px solid var(--line);max-width:450px;color:var(--muted);padding-top:21px;font-size:12px;line-height:1.8}.result-actions{flex-wrap:wrap;align-items:center;gap:23px;margin-top:25px;display:flex}.results-box{border:1px solid var(--line);background:var(--surface);border-radius:15px;padding:30px}.results-box h2{margin-bottom:25px;font-size:26px}.skill-result{border-top:1px solid var(--line);padding:18px 0}.skill-result-top{justify-content:space-between;gap:15px;margin-bottom:12px;font-size:15px;display:flex}.skill-result .progress-track{height:5px}.skill-result small{color:var(--muted);margin-top:8px;font-size:11px;display:block}.recommendation{background:var(--sage);border-radius:12px;margin-top:23px;padding:21px}.recommendation .eyebrow{margin-bottom:12px;font-size:10px}.recommendation h3{font-size:22px}.recommendation p{color:var(--muted);margin-top:9px;font-size:13px;line-height:1.75}.recommendation .text-link{margin-top:8px;font-size:13px}.review-section{padding-bottom:75px}.review-heading{justify-content:space-between;align-items:center;margin-bottom:25px;display:flex}.review-heading h2{font-size:33px}.review-heading span{color:var(--muted);font-size:12px}.review-row{border-top:1px solid var(--line)}.review-row summary{gap:16px;font-size:17px}.review-status{background:var(--right-bg);width:29px;height:29px;color:var(--right);border-radius:50%;flex:none;place-items:center;display:grid}.review-status.wrong{background:var(--wrong-bg);color:var(--wrong)}.review-status svg{width:15px;height:15px}.review-question{flex:1;font-weight:400}.review-detail{max-width:850px;padding:0 0 24px 45px;font-size:14px}.review-detail p{color:var(--muted);margin:9px 0}.review-detail strong{color:var(--ink);font-weight:500}.empty-result{text-align:center;max-width:650px;margin:auto;padding:90px 20px 110px}.empty-result h1{font-size:45px}.empty-result p{color:var(--muted);margin:25px 0 30px}.demo-badge{border:1px solid var(--line);color:var(--muted);letter-spacing:.04em;border-radius:4px;padding:1px 6px;font-size:10px;display:inline-flex}.fade-in{animation:.25s fade-in}@keyframes fade-in{0%{opacity:.5;transform:translateY(5px)}to{opacity:1;transform:translateY(0)}}@media (width>=1450px){.hero{padding-top:90px;padding-bottom:82px}}@media (width<=1100px){.container{width:calc(100% - 48px)}.header-inner{gap:16px}.header-nav{gap:18px}.hero{gap:25px}.hero-actions{gap:17px}.header-tools{gap:8px}.header-tools>.btn{display:none}.exercise-paper{padding:24px}.learning-layout{gap:55px}.curriculum-layout{grid-template-columns:230px 1fr;gap:35px}.result-layout{gap:38px}.proof-number{font-size:21px}.proof-item+.proof-item{padding-left:20px}}@media (width<=760px){.container{width:calc(100% - 36px)}.header-inner{flex-wrap:wrap;gap:12px;min-height:78px;padding:15px 0 0}.brand-mark{border-radius:9px;width:31px;height:31px;font-size:26px}.wordmark{font-size:24px}.header-nav{border-top:1px solid var(--line);order:3;justify-content:space-between;gap:10px;width:100%;padding:3px 0;font-size:12px}.header-tools{margin-left:auto}.language-picker a{min-width:32px;height:30px}.header-tools .icon-btn{width:34px;height:34px}.header-tools .icon-btn svg{width:17px;height:17px}.hero{grid-template-columns:1fr;gap:27px;padding:39px 0 38px}.hero h1{max-width:560px;font-size:51px}.eyebrow{margin-bottom:19px;font-size:10px}.hero-lead{max-width:530px;margin-top:21px;font-size:16px}.hero-actions{gap:20px;margin-top:24px}.hero-fine{font-size:11px}.practice-stage{width:100%;max-width:510px;margin:auto;padding:25px 18px 28px}.exercise-paper{padding:23px 24px}.exercise-top{margin-bottom:24px}.sentence{font-size:28px}.stage-note{font-size:14px;bottom:-2px;right:26px}.proof-strip{gap:12px;padding:22px 0}.proof-item{display:block}.proof-item+.proof-item{padding-left:14px}.proof-number{margin-bottom:6px;font-size:23px;display:block}.proof-label{font-size:10px;line-height:1.6}.section{padding:49px 0}.learning-layout,.faq-grid{grid-template-columns:1fr;gap:31px}.learning-copy h2{max-width:480px}.learning-copy .text-link{margin-top:12px}.topic-preview{padding:18px 0}.topic-name{font-size:18px}.peach-section{padding:43px 0}.process-grid{grid-template-columns:1fr;gap:25px;margin-top:27px}.process-item{padding:23px 0 0 40px;position:relative}.process-num{position:absolute;top:27px;left:0}.process-item h3{margin-bottom:10px;font-size:22px}.process-item p{max-width:100%}.section-heading{flex-direction:column;align-items:flex-start;gap:14px}.cta-panel{border-radius:13px;flex-direction:column;align-items:flex-start;gap:24px;padding:30px 26px}.cta-panel h2{font-size:32px}.cta-panel .btn{width:100%}.faq-grid{gap:22px}.footer-top{align-items:flex-start;gap:15px}.footer-caption{text-align:right;max-width:140px;font-size:10px}.footer-bottom{flex-direction:column;gap:13px;font-size:10px}.footer-links{align-items:flex-start}.page-head{padding:26px 0 32px}.page-head h1{font-size:40px}.page-head p{margin-top:18px;font-size:15px}.breadcrumbs{margin-bottom:23px;font-size:11px}.curriculum-layout{grid-template-columns:1fr;gap:25px;padding-bottom:45px}.curriculum-aside{position:static}.aside-note{display:none}.filter-buttons{gap:4px;padding-bottom:5px;display:flex;overflow:auto}.filter-btn{border:1px solid var(--line);flex:none;gap:8px;padding:10px 14px;font-size:13px}.filter-label{display:none}.lesson-row summary{gap:14px;padding:19px 0}.lesson-title strong{font-size:17px}.lesson-content{padding-left:0}.lesson-example{font-size:18px}.quiz-shell{width:calc(100% - 32px);margin:23px auto 40px}.quiz-card{border-radius:12px;margin-top:19px;padding:24px 20px}.quiz-kicker{margin-bottom:21px;font-size:10px}.quiz-card h1{margin-bottom:22px;font-size:23px}.quiz-card .sentence{min-height:85px;font-size:24px}.quiz-card .base-word{font-size:14px}.quiz-card .answer-options{gap:7px;margin:20px 0}.quiz-card .answer-option{padding:12px 5px;font-size:14px}.quiz-actions{gap:12px;padding-top:20px}.quiz-actions .btn{gap:12px;padding:12px 18px;font-size:14px}.quiz-card .feedback{margin-bottom:20px;font-size:13px}.quiz-footer{font-size:10px}.result-layout{grid-template-columns:1fr;gap:30px;padding:35px 0 40px}.result-intro h1{font-size:43px}.result-intro>p{font-size:15px}.score-display{margin:25px 0}.score-ring{width:105px;height:105px}.score-ring>span{width:89px;height:89px;padding-top:20px;font-size:34px}.results-box{padding:24px}.result-actions{gap:18px}.review-heading h2{font-size:28px}.review-heading span{font-size:10px}.review-row summary{gap:10px;font-size:15px}.review-detail{padding-left:0;font-size:13px}.review-section{padding-bottom:45px}.empty-result{padding:60px 20px}.empty-result h1{font-size:36px}}@media (width<=380px){.hero h1{font-size:44px}.wordmark{font-size:21px}.brand{gap:6px}.brand-mark{width:29px;height:29px}.header-tools{gap:5px}.language-picker a{min-width:29px}.hero-actions{gap:12px}.hero-actions .btn{gap:16px;padding:13px 18px}.hero-actions .text-link{font-size:12px}.proof-number{font-size:20px}.exercise-paper{padding:21px 18px}.answer-option{padding:10px 6px}.sentence{font-size:25px}.quiz-card .answer-option{font-size:12px}.quiz-card .sentence{font-size:22px}}.hero>*,.curriculum-layout>*,.learning-layout>*,.result-layout>*,.proof-strip>*{min-width:0}@media (width<=760px){.practice-stage{padding-bottom:36px;overflow:hidden}.stage-note{bottom:5px}.filter-buttons{flex-wrap:wrap;overflow:visible}.filter-btn{flex:40%;justify-content:space-between}.lesson-title{overflow-wrap:anywhere;min-width:0}.proof-strip{grid-template-columns:repeat(3,minmax(0,1fr))}.proof-number{white-space:normal}.exercise-top span:first-child{max-width:80%}.hero-fine{align-items:flex-start}.quiz-card .answer-options{grid-template-columns:1fr}.quiz-card .answer-option{font-size:15px}.quiz-card .sentence{min-height:65px}}@media (prefers-reduced-motion:reduce){html{scroll-behavior:auto}*,:before,:after{scroll-behavior:auto!important;transition:none!important;animation:none!important}}.lt-range{color:var(--muted);margin-top:14px;font-size:12px}.lt-items{gap:16px;margin-top:16px;display:grid}.lt-item{background:var(--surface);border:1px solid var(--line);box-shadow:var(--shadow);border-radius:15px;padding:24px 28px 14px}.lt-item.done{border-color:var(--accent)}.lt-src{color:var(--muted);margin-bottom:6px;font-size:17px}.lt-src u,.review-detail u{text-decoration-color:var(--orange);text-underline-offset:5px;color:var(--ink);text-decoration-thickness:2px}.lt-item .sentence{font-size:clamp(20px,2vw,25px);line-height:1.6}.lt-item .blank{min-width:70px}.lt-item .answer-options{margin:16px 0 4px}.lt-item .answer-options.long{grid-template-columns:1fr}.lt-input{border:1px solid var(--line);background:var(--bg);width:100%;min-height:54px;color:var(--ink);font:inherit;border-radius:9px;margin-top:14px;padding:10px 14px;font-size:20px}.lt-input:focus-visible{outline:3px solid var(--accent);outline-offset:2px}.lt-skip{justify-content:flex-end;display:flex}.lt-skip .text-link{color:var(--muted);font-size:13px}.lt-skip .text-link[aria-pressed=true]{color:var(--accent);text-decoration-color:var(--accent)}.lt-actions{border-top:1px solid var(--line);justify-content:space-between;align-items:center;gap:16px;margin-top:22px;padding-top:20px;display:flex}.lt-next-wrap{flex-wrap:wrap;justify-content:flex-end;align-items:center;gap:14px;display:flex}.lt-hint{color:var(--muted);text-align:right;max-width:260px;font-size:12px}.lt-hint[hidden]{visibility:hidden;display:block}.sr-only{clip:rect(0 0 0 0);white-space:nowrap;border:0;width:1px;height:1px;margin:-1px;padding:0;position:absolute;overflow:hidden}.lt-input::placeholder{color:var(--muted);opacity:1}summary:after{content:"+" / ""}details[open]>summary:after{content:"−" / ""}html{scrollbar-gutter:stable}.hero{align-items:start}.exercise-paper{transform-origin:50% 0}.header-tools>.btn{white-space:nowrap;min-width:180px}@media (width>=761px){.header-inner{grid-template-columns:1fr auto 1fr;display:grid}.header-tools{justify-self:end}}.lt-item .blank{justify-items:center;display:inline-grid}.lt-item .blank>span{grid-area:1/1}.blank-fit{visibility:hidden}html,body{overflow-x:clip}.blank{margin-right:0}.aside-note .btn{white-space:nowrap}.lt-map-row small{white-space:nowrap;display:inline-block}.review-heading span{white-space:nowrap;flex:none}.demo-badge{white-space:nowrap}@media (width<=900px){.result-layout{grid-template-columns:1fr}}@media (width<=640px){.lt-next-wrap{display:contents}.lt-actions>*{order:1}.lt-hint{text-align:right;flex-basis:100%;order:2;max-width:none}.lt-hint[hidden]{visibility:hidden;display:block}}.lt-scale{grid-template-columns:repeat(5,1fr);gap:4px;max-width:450px;margin:26px 0 8px;display:grid}.lt-scale span{background:var(--line);border-radius:5px;height:10px}.lt-scale span.on{background:var(--accent)}.lt-scale-labels{max-width:450px;color:var(--muted);text-align:center;grid-template-columns:repeat(5,1fr);gap:4px;margin-bottom:22px;font-size:11px;display:grid}.lt-scale-labels .on{color:var(--accent);font-weight:600}.lt-note{color:var(--muted);max-width:450px;margin-top:12px;font-size:13px;line-height:1.7}.lt-note a{text-underline-offset:4px;text-decoration:underline}.lt-warn{background:var(--wrong-bg);border-radius:9px;max-width:450px;margin-top:14px;padding:13px 16px;font-size:13px;line-height:1.7}.lt-extra{border:1px dashed var(--accent);border-radius:12px;max-width:450px;margin-top:22px;padding:20px}.lt-extra h3{font-size:20px}.lt-extra p{color:var(--muted);margin:8px 0 14px;font-size:14px;line-height:1.7}.lt-map-row{border-top:1px solid var(--line);grid-template-columns:2.6em 1fr auto;align-items:center;gap:10px;padding:12px 0;font-size:14px;display:grid}.lt-map-row small{margin-left:4px;font-size:12px}.lt-roman{color:var(--accent);font-weight:600}.lt-st{white-space:nowrap;border-radius:5px;padding:4px 9px;font-size:12px;font-weight:600}.lt-st.ok{background:var(--right-bg);color:var(--right)}.lt-st.mixed{background:var(--soft);color:var(--ink)}.lt-st.weak{background:var(--wrong-bg);color:var(--wrong)}.review-status.almost{background:var(--soft);color:var(--orange)}.lt-badge{background:var(--sage);min-width:3.4em;color:var(--accent);letter-spacing:.06em;text-align:center;border-radius:5px;flex:none;padding:3px 7px;font-size:11px;font-weight:600}.lt-ans{color:var(--accent);font-weight:600}@media (width<=640px){.lt-item{padding:18px 16px 10px}.lt-item .answer-options{grid-template-columns:1fr}.lt-actions{flex-wrap:wrap}.lt-hint{text-align:left}}[hidden]:not(.lt-hint){display:none!important}.theme-sun{display:none}:root[data-theme=dark] .theme-sun{display:contents}:root[data-theme=dark] .theme-moon{display:none}.theme-moon{display:contents}.faq-section{padding-top:0}.eyebrow-center{justify-content:center}.review-hint{margin-bottom:17px;font-size:12px}.lt-loading{min-height:100vh}.noscript{text-align:center;padding:20px}.course-block+.course-block{margin-top:34px}.block-heading{letter-spacing:-.025em;align-items:center;gap:12px;margin-bottom:12px;font-size:21px;display:flex}.course-task-filter{background:var(--sage);color:var(--accent);border-radius:9px;justify-content:space-between;align-items:center;gap:16px;margin-bottom:16px;padding:4px 16px;font-size:14px;font-weight:500;display:flex}.course-task-filter .text-link{min-height:40px;font-size:13px}.lesson-row[hidden],.course-block[hidden]{display:none}.lang-choice{max-width:640px;padding:56px 0 64px}.lang-choice h1{gap:4px;margin:34px 0 30px;font-size:clamp(30px,4vw,42px);display:grid}.lang-choice-title+.lang-choice-title{color:var(--muted)}.lang-choice-list{gap:12px;display:grid}.lang-card{background:var(--surface);border:1px solid var(--line);min-height:76px;box-shadow:var(--shadow);border-radius:15px;align-items:center;gap:18px;padding:20px 22px;transition:border-color .15s,background .15s;display:flex}.lang-card:hover{border-color:var(--accent)}.lang-card.suggested{border-color:var(--accent);box-shadow:inset 0 0 0 1px var(--accent), var(--shadow)}.lang-card-code{background:var(--sage);width:44px;height:44px;color:var(--accent);border-radius:10px;flex:none;place-items:center;font-size:14px;font-weight:600;display:grid}.lang-card-body{flex:1;min-width:0}.lang-card-body strong{letter-spacing:-.02em;font-size:19px;font-weight:500;display:block}.lang-card-body span{color:var(--muted);font-size:13px;line-height:1.6;display:block}.lang-choice-session{color:var(--muted);margin-top:28px;font-size:13px;line-height:1.8}.lang-choice-session strong{color:var(--ink);font-weight:500}.lang-choice-legal{border-top:1px solid var(--line);color:var(--muted);margin-top:28px;padding-top:20px;font-size:11px;line-height:1.8}@media (width<=760px){.lang-choice{padding:32px 0 40px}.block-heading{font-size:19px}}.lt-history{max-width:450px;margin-top:22px}.lt-history h3{letter-spacing:-.01em;margin-bottom:8px;font-size:16px}.lt-history ul{margin:0;padding:0;list-style:none}.lt-history li{border-top:1px solid var(--line);justify-content:space-between;gap:16px;padding:8px 0;font-size:13px;display:flex}.lt-history li span:last-child{color:var(--accent);font-weight:600}.legal{max-width:760px;padding:46px 0 80px;font-size:17px;line-height:1.7}.legal-head h1{font-size:clamp(38px,4.2vw,56px)}.legal-meta{color:var(--muted);margin-top:18px}.legal-binding{color:var(--muted);margin-top:12px;font-size:15px}.legal h2{letter-spacing:-.03em;margin:0 0 14px;font-size:26px}.legal h3{letter-spacing:-.02em;margin:26px 0 8px;font-size:19px}.legal section{margin-top:46px;scroll-margin-top:24px}.legal p+p,.legal p+ul,.legal ul+p,.legal dl+p,.legal p+dl,.legal ul+dl{margin-top:14px}.legal ul,.legal ol{margin:0;padding-left:22px}.legal li+li{margin-top:6px}.legal a{color:var(--accent);text-underline-offset:3px;text-decoration:underline}.legal a:hover{color:var(--accent-hover)}.legal code{background:var(--soft);border-radius:5px;padding:1px 5px;font-size:.9em}.legal .legal-summary{background:var(--sage);border-radius:18px;margin-top:32px;padding:26px 30px}.legal .legal-summary h2{font-size:22px}.legal .legal-toc{border-left:3px solid var(--line);margin-top:36px;padding-left:22px}.legal .legal-toc h2{letter-spacing:0;color:var(--muted);margin-bottom:8px;font-size:15px}.legal-toc ol{font-size:15px}.legal-toc li+li{margin-top:2px}.legal-facts{border-top:1px solid var(--line);margin:18px 0 0}.legal-facts div{border-bottom:1px solid var(--line);grid-template-columns:170px 1fr;gap:18px;padding:12px 0;display:grid}.legal-facts dt{color:var(--muted);font-size:15px;font-weight:600}.legal-facts dd{margin:0}.legal-badge{vertical-align:middle;background:var(--peach);color:var(--ink);letter-spacing:0;border-radius:99px;margin-left:6px;padding:3px 10px;font-size:13px;font-weight:600;line-height:1.4;display:inline-block}.legal-later{border-top:1px solid var(--line);padding-top:36px}.legal .legal-changes{padding-left:0;list-style:none}.quiz-privacy{text-underline-offset:3px;text-decoration:underline}@media (width<=760px){.legal{padding:26px 0 56px;font-size:16px}.legal-head h1{font-size:36px}.legal h2{font-size:22px}.legal section{margin-top:36px}.legal .legal-summary{border-radius:14px;padding:20px}.legal-facts div{grid-template-columns:1fr;gap:2px}.legal-facts dt{font-size:14px}}