@import url("https://fonts.googleapis.com/css2?family=Fraunces:ital,opsz,wght@0,9..144,300..600;1,9..144,400..600&family=Manrope:wght@400;500;600;700;800&family=JetBrains+Mono:wght@400;500&display=swap");.lex-root{--lex-bg:#f5f1e8;--lex-bg-card:#fbf8f1;--lex-bg-elev:#ffffff;--lex-ink:#1a1a1a;--lex-ink-soft:#4a4742;--lex-ink-mute:#8a857c;--lex-line:#e8e2d2;--lex-line-strong:#d8cfb8;--lex-emerald:#1f4d3f;--lex-emerald-soft:#d8e6df;--lex-emerald-glow:#2c6951;--lex-gold:#b8860b;--lex-gold-soft:#f5e9c8;--lex-gold-bright:#e9b84a;--lex-crimson:#8b1e2e;--lex-crimson-soft:#f4dde0;--lex-shadow-sm:0 1px 2px rgba(40,30,10,0.04),0 1px 3px rgba(40,30,10,0.06);--lex-shadow-md:0 4px 12px rgba(40,30,10,0.06),0 2px 4px rgba(40,30,10,0.04);--lex-shadow-lg:0 12px 40px rgba(40,30,10,0.10),0 4px 8px rgba(40,30,10,0.06);--lex-serif:"Fraunces",Georgia,serif;--lex-sans:"Manrope",-apple-system,system-ui,sans-serif;--lex-mono:"JetBrains Mono",monospace;--lex-r-sm:6px;--lex-r-md:12px;--lex-r-lg:20px;--lex-r-xl:28px;background:var(--lex-bg);color:var(--lex-ink);font-family:var(--lex-sans);font-size:16px;line-height:1.6;-webkit-font-smoothing:antialiased;background-image:radial-gradient(circle at 20% 10%,rgba(31,77,63,.04) 0,transparent 40%),radial-gradient(circle at 80% 90%,rgba(184,134,11,.04) 0,transparent 40%);min-height:100vh}.lex-root *,.lex-root :after,.lex-root :before{box-sizing:border-box}.lex-app{max-width:980px;margin:0 auto;min-height:100vh;display:flex;flex-direction:column}.lex-topbar{justify-content:space-between;padding:22px 32px;border-bottom:1px solid var(--lex-line);background:rgba(245,241,232,.85);backdrop-filter:blur(10px);position:sticky;top:0;z-index:50}.lex-brand,.lex-topbar{display:flex;align-items:center}.lex-brand{gap:12px;cursor:pointer;user-select:none}.lex-brand-mark{width:46px;height:36px;background:var(--lex-emerald);color:var(--lex-bg);display:grid;place-items:center;font-weight:600;border-radius:4px;transform:rotate(-2deg);box-shadow:var(--lex-shadow-sm)}.lex-brand-mark,.lex-brand-name{font-family:var(--lex-serif);font-size:22px}.lex-brand-name{font-weight:500;letter-spacing:-.02em;font-variation-settings:"SOFT" 50,"WONK" 1}.lex-brand-name em{font-style:italic;color:var(--lex-emerald)}.lex-topbar-right{display:flex;gap:12px;align-items:center}.lex-progress-wrap{height:6px;background:var(--lex-line);overflow:hidden;position:relative}.lex-progress-bar{height:100%;background:linear-gradient(90deg,var(--lex-emerald) 0,var(--lex-emerald-glow) 100%);width:0;transition:width .5s cubic-bezier(.34,1.56,.64,1);position:relative}.lex-progress-bar:after{content:"";position:absolute;top:0;right:0;bottom:0;width:30px;background:linear-gradient(90deg,transparent,rgba(255,255,255,.4))}.lex-stage{flex:1;padding:48px 32px 80px;position:relative}.lex-screen-in{animation:lex-screenIn .4s ease}@keyframes lex-screenIn{0%{opacity:0;transform:translateY(12px)}to{opacity:1;transform:translateY(0)}}.lex-courses-grid{display:grid;gap:22px;grid-template-columns:repeat(auto-fill,minmax(280px,1fr))}.lex-course-card{background:var(--lex-bg-card);border:1px solid var(--lex-line);border-radius:var(--lex-r-lg);padding:24px 24px 22px;cursor:pointer;transition:transform .25s ease,box-shadow .25s ease,border-color .25s ease;position:relative;display:flex;flex-direction:column;gap:14px;text-align:left;width:100%;font-family:inherit;color:inherit}.lex-course-card:hover:not(:disabled){transform:translateY(-3px);border-color:var(--lex-emerald);box-shadow:var(--lex-shadow-md)}.lex-course-card.locked,.lex-course-card:disabled{opacity:.55;cursor:not-allowed}.lex-course-card-mark{width:44px;height:44px;background:var(--lex-emerald);color:var(--lex-bg);display:grid;place-items:center;font-family:var(--lex-serif);font-weight:500;font-size:22px;border-radius:4px;transform:rotate(-2deg);box-shadow:var(--lex-shadow-sm)}.lex-course-card-title{font-family:var(--lex-serif);font-size:24px;font-weight:500;line-height:1.2;font-variation-settings:"opsz" 60,"SOFT" 50}.lex-course-card-title em{font-style:italic;color:var(--lex-emerald)}.lex-course-card-sub{font-size:14px;color:var(--lex-ink-mute)}.lex-course-card-desc{font-size:13.5px;color:var(--lex-ink-soft);line-height:1.55}.lex-course-card-foot{margin-top:auto;display:flex;justify-content:space-between;align-items:center;padding-top:12px;border-top:1px solid var(--lex-line);font-family:var(--lex-mono);font-size:11px;letter-spacing:.08em;color:var(--lex-ink-mute);text-transform:uppercase}.lex-course-card-progress{height:4px;background:var(--lex-line);border-radius:999px;overflow:hidden}.lex-course-card-progress>span{display:block;height:100%;background:linear-gradient(90deg,var(--lex-emerald),var(--lex-emerald-glow))}.lex-course-header{text-align:center;margin-bottom:56px}.lex-course-eyebrow{font-family:var(--lex-mono);font-size:12px;letter-spacing:.15em;text-transform:uppercase;color:var(--lex-ink-mute);margin-bottom:12px}.lex-course-title{font-family:var(--lex-serif);font-weight:400;font-size:clamp(36px,5.5vw,56px);line-height:1.05;letter-spacing:-.025em;margin-bottom:16px;font-variation-settings:"opsz" 144,"SOFT" 30}.lex-course-title em{font-style:italic;color:var(--lex-emerald);font-variation-settings:"opsz" 144,"SOFT" 100,"WONK" 1}.lex-course-sub{font-size:16px;color:var(--lex-ink-soft);max-width:560px;margin:0 auto}.lex-path{position:relative;display:flex;flex-direction:column;gap:28px;padding:0 24px}.lex-path-rail{position:absolute;left:50%;top:50px;bottom:50px;width:2px;background:repeating-linear-gradient(to bottom,var(--lex-line-strong) 0,var(--lex-line-strong) 6px,transparent 6px,transparent 12px);transform:translateX(-1px);z-index:0}.lex-module{position:relative;z-index:1}.lex-module-head{display:flex;align-items:center;justify-content:center;gap:16px;margin-bottom:20px}.lex-module-num{font-family:var(--lex-mono);font-size:11px;letter-spacing:.15em;text-transform:uppercase;color:var(--lex-ink-mute)}.lex-module-title{font-family:var(--lex-serif);font-size:22px;font-weight:500;font-variation-settings:"opsz" 24,"SOFT" 50}.lex-lessons{display:flex;flex-direction:column;gap:16px}.lex-lesson-row{display:flex;align-items:center;gap:20px}.lex-lesson-row.right{flex-direction:row-reverse}.lex-lesson-card{flex:0 0 auto;width:380px;background:var(--lex-bg-card);border:1px solid var(--lex-line);border-radius:var(--lex-r-lg);padding:20px 22px;cursor:pointer;transition:all .25s ease;position:relative;box-shadow:var(--lex-shadow-sm);text-align:left;font-family:inherit;color:inherit}.lex-lesson-card:hover:not(.locked):not(:disabled){transform:translateY(-2px);box-shadow:var(--lex-shadow-md);border-color:var(--lex-emerald)}.lex-lesson-card.locked{opacity:.55;cursor:not-allowed;background:transparent}.lex-lesson-card.completed{border-color:var(--lex-emerald);background:var(--lex-emerald-soft)}.lex-lesson-card-top{display:flex;justify-content:space-between;align-items:start;margin-bottom:8px}.lex-lesson-card-num{letter-spacing:.1em;text-transform:uppercase}.lex-lesson-card-meta,.lex-lesson-card-num{font-family:var(--lex-mono);font-size:11px;color:var(--lex-ink-mute)}.lex-lesson-card-title{font-family:var(--lex-serif);font-size:19px;font-weight:500;line-height:1.25;margin-bottom:6px;font-variation-settings:"opsz" 24,"SOFT" 30}.lex-lesson-card-desc{font-size:13px;color:var(--lex-ink-soft);line-height:1.5}.lex-lesson-card-status{margin-top:14px;display:flex;align-items:center;gap:8px;font-size:12px;color:var(--lex-ink-mute);font-family:var(--lex-mono);letter-spacing:.05em}.lex-lesson-card.completed .lex-lesson-card-status{color:var(--lex-emerald)}.lex-lesson-node{flex:0 0 56px;height:56px;border-radius:50%;background:var(--lex-bg-card);border:2px solid var(--lex-line-strong);display:grid;place-items:center;font-family:var(--lex-serif);font-weight:500;color:var(--lex-ink-mute);position:relative;transition:all .25s ease}.lex-lesson-node.completed{background:var(--lex-emerald);border-color:var(--lex-emerald);color:var(--lex-bg)}.lex-lesson-node.current{background:var(--lex-gold-bright);border-color:var(--lex-gold);color:var(--lex-ink);box-shadow:0 0 0 6px var(--lex-gold-soft);animation:lex-nodeBreathing 2s ease-in-out infinite}@keyframes lex-nodeBreathing{0%,to{box-shadow:0 0 0 6px var(--lex-gold-soft)}50%{box-shadow:0 0 0 12px var(--lex-gold-soft)}}.lex-block{max-width:720px;margin:0 auto}.lex-block-eyebrow{font-family:var(--lex-mono);font-size:11px;letter-spacing:.18em;text-transform:uppercase;color:var(--lex-ink-mute);margin-bottom:14px;display:flex;align-items:center;gap:10px}.lex-block-eyebrow:before{content:"";width:24px;height:1px;background:var(--lex-ink-mute)}.lex-block-title{font-family:var(--lex-serif);font-size:clamp(28px,4vw,36px);line-height:1.15;font-weight:400;letter-spacing:-.02em;margin-bottom:24px;font-variation-settings:"opsz" 144,"SOFT" 50}.lex-block-title em{font-style:italic;color:var(--lex-emerald);font-variation-settings:"opsz" 144,"SOFT" 100,"WONK" 1}.lex-block-prose{font-size:16px;line-height:1.7;color:var(--lex-ink-soft);margin-bottom:24px}.lex-block-prose p+p{margin-top:14px}.lex-block-prose em{font-style:italic;color:var(--lex-emerald);font-weight:500}.lex-block-prose .term{color:var(--lex-emerald);font-weight:600;border-bottom:1px dashed var(--lex-emerald);cursor:help;position:relative}.lex-block-prose .term:after{content:attr(data-hint);position:absolute;bottom:100%;left:50%;transform:translate(-50%);background:var(--lex-ink);color:var(--lex-bg-card);padding:12px 16px;border-radius:var(--lex-r-md);font-size:13px;line-height:1.5;width:280px;font-weight:400;opacity:0;pointer-events:none;transition:all .2s ease;z-index:30;box-shadow:var(--lex-shadow-lg);white-space:normal;text-align:left}.lex-block-prose .term:focus:after,.lex-block-prose .term:hover:after{opacity:1;transform:translate(-50%,-8px)}.lex-callout{background:var(--lex-gold-soft);border-left:3px solid var(--lex-gold);padding:18px 22px;margin:24px 0;font-size:14.5px;line-height:1.6;color:var(--lex-ink);border-radius:0 var(--lex-r-md) var(--lex-r-md) 0}.lex-callout-label{font-family:var(--lex-serif);font-style:italic;font-weight:500;color:var(--lex-gold);display:block;margin-bottom:6px;font-size:12.5px;letter-spacing:.05em;text-transform:uppercase}.lex-callout-statute{background:#f0eee5;border-left-color:var(--lex-ink)}.lex-callout-statute .lex-callout-label{color:var(--lex-ink)}.lex-callout-statute .lex-callout-text{font-family:var(--lex-serif);font-style:italic}.lex-callout-warning{background:var(--lex-crimson-soft);border-left-color:var(--lex-crimson)}.lex-callout-warning .lex-callout-label{color:var(--lex-crimson)}.lex-diagram-wrap{background:var(--lex-bg-card);border:1px solid var(--lex-line);border-radius:var(--lex-r-lg);padding:28px;margin:8px 0;position:relative}.lex-diagram-svg{width:100%;max-width:600px;margin:0 auto;display:block}.lex-diagram-caption{font-family:var(--lex-mono);font-size:11px;color:var(--lex-ink-mute);text-align:center;margin-top:14px;letter-spacing:.05em}.lex-dgr-node{cursor:pointer;transition:transform .2s ease}.lex-dgr-node:hover{transform:translateY(-2px)}.lex-dgr-node-bg{fill:var(--lex-bg-elev);stroke:var(--lex-line-strong);stroke-width:1.5;transition:all .25s ease}.lex-dgr-node.active .lex-dgr-node-bg{fill:var(--lex-emerald);stroke:var(--lex-emerald)}.lex-dgr-node-text{font-family:var(--lex-serif);font-size:14px;fill:var(--lex-ink);pointer-events:none}.lex-dgr-node.active .lex-dgr-node-text{fill:var(--lex-bg-card)}.lex-dgr-node-sub{font-family:var(--lex-mono);font-size:9px;fill:var(--lex-ink-mute);pointer-events:none;letter-spacing:.1em}.lex-dgr-node.active .lex-dgr-node-sub{fill:var(--lex-gold-soft)}.lex-dgr-line{stroke:var(--lex-line-strong);stroke-width:1.5;fill:none}.lex-dgr-info{margin-top:16px;padding:18px;background:var(--lex-emerald-soft);border-radius:var(--lex-r-md);font-size:14px;line-height:1.6;min-height:80px;transition:all .3s ease;color:var(--lex-ink)}.lex-dgr-info-title{font-family:var(--lex-serif);font-weight:500;color:var(--lex-emerald);margin-bottom:4px;font-size:16px;font-style:italic}.lex-dgr-info-empty{color:var(--lex-ink-mute);font-family:var(--lex-mono);font-size:12px;letter-spacing:.05em}.lex-compare-wrap{border:1px solid var(--lex-line);border-radius:var(--lex-r-md);overflow:hidden;background:var(--lex-bg-card);margin-top:8px}.lex-compare-row{display:grid;grid-template-columns:1.2fr 1.5fr 1.5fr}.lex-compare-row+.lex-compare-row{border-top:1px solid var(--lex-line)}.lex-compare-row.head{background:#f0eee5;font-family:var(--lex-mono);font-size:11px;letter-spacing:.12em;text-transform:uppercase;color:var(--lex-ink-mute)}.lex-compare-row.head .l{color:var(--lex-emerald)}.lex-compare-row.head .r{color:var(--lex-crimson)}.lex-compare-row>div{padding:14px 18px;font-size:14.5px;line-height:1.5}.lex-compare-row>div+div{border-left:1px solid var(--lex-line)}.lex-compare-row .aspect{font-family:var(--lex-mono);font-size:11px;letter-spacing:.05em;text-transform:uppercase;color:var(--lex-ink-mute)}.lex-timeline{margin-top:8px;padding-left:28px;position:relative;border-left:2px dashed var(--lex-line-strong);display:flex;flex-direction:column;gap:18px}.lex-timeline-event{background:var(--lex-bg-card);border:1px solid var(--lex-line);border-radius:var(--lex-r-md);padding:16px 18px;position:relative}.lex-timeline-event:before{content:"";position:absolute;left:-36px;top:16px;width:16px;height:16px;border-radius:50%;background:var(--lex-emerald);box-shadow:0 0 0 3px var(--lex-emerald-soft)}.lex-timeline-marker{font-family:var(--lex-mono);font-size:10.5px;letter-spacing:.12em;text-transform:uppercase;color:var(--lex-ink-mute);margin-bottom:4px}.lex-timeline-title{font-family:var(--lex-serif);font-weight:500;font-size:17px;color:var(--lex-ink);margin-bottom:4px;font-variation-settings:"opsz" 24,"SOFT" 30}.lex-timeline-desc{font-size:14px;line-height:1.55;color:var(--lex-ink-soft)}.lex-flashcards{margin-top:8px;display:grid;gap:12px;grid-template-columns:repeat(auto-fill,minmax(220px,1fr));align-items:start}.lex-flashcard{position:relative;cursor:pointer;perspective:1000px;background:transparent;border:none;padding:0;font-family:inherit}.lex-flashcard-inner{position:relative;width:100%;display:grid;min-height:130px;transform-style:preserve-3d;transition:transform .55s cubic-bezier(.34,1.56,.64,1)}.lex-flashcard.flipped .lex-flashcard-inner{transform:rotateY(180deg)}.lex-flashcard-face{grid-column:1/2;grid-row:1/2;display:flex;align-items:center;justify-content:center;text-align:center;padding:18px;border-radius:var(--lex-r-md);backface-visibility:hidden;-webkit-backface-visibility:hidden;box-shadow:var(--lex-shadow-sm);border:1px solid transparent;word-break:break-word;overflow-wrap:anywhere;hyphens:auto}.lex-flashcard-front{background:var(--lex-ink);color:var(--lex-bg-card);font-family:var(--lex-serif);font-weight:500;font-size:19px;font-variation-settings:"opsz" 36,"SOFT" 50}.lex-flashcard-front em{font-style:italic;color:var(--lex-gold-bright)}.lex-flashcard-back{background:var(--lex-emerald-soft);color:var(--lex-ink);border-color:var(--lex-emerald);transform:rotateY(180deg);font-size:14px;line-height:1.5}.lex-checklist{margin-top:8px;display:flex;flex-direction:column;gap:10px}.lex-check-item{background:var(--lex-bg-card);border:1px solid var(--lex-line);border-radius:var(--lex-r-md);padding:14px 18px;cursor:pointer;transition:all .22s ease;text-align:left;font-family:inherit;color:inherit;width:100%}.lex-check-item.open,.lex-check-item:hover{border-color:var(--lex-emerald)}.lex-check-item.open{background:#f4f8f6}.lex-check-row{display:flex;align-items:center;gap:14px}.lex-check-mark{width:26px;height:26px;border-radius:50%;flex-shrink:0;border:1.5px solid var(--lex-line-strong);background:var(--lex-bg-elev);display:grid;place-items:center;transition:all .22s ease;color:transparent;font-size:13px}.lex-check-item.open .lex-check-mark{background:var(--lex-emerald);border-color:var(--lex-emerald);color:var(--lex-bg)}.lex-check-title{font-family:var(--lex-serif);font-size:16px;font-weight:500;color:var(--lex-ink)}.lex-check-desc{margin-top:8px;font-size:13.5px;line-height:1.55;color:var(--lex-ink-soft);max-height:0;overflow:hidden;transition:max-height .3s ease}.lex-check-item.open .lex-check-desc{max-height:200px}.lex-ex-prompt{font-family:var(--lex-serif);font-size:clamp(22px,3.2vw,28px);line-height:1.25;font-weight:400;margin-bottom:6px;font-variation-settings:"opsz" 96,"SOFT" 30}.lex-ex-prompt em{font-style:italic;color:var(--lex-emerald)}.lex-ex-instruction{font-size:13px;letter-spacing:.05em;margin-bottom:4px}.lex-ex-instruction,.lex-ex-meta{color:var(--lex-ink-mute);font-family:var(--lex-mono)}.lex-ex-meta{display:flex;justify-content:space-between;align-items:center;font-size:11px;letter-spacing:.1em;text-transform:uppercase;margin-top:16px;padding-top:12px;border-top:1px solid var(--lex-line)}.lex-options{display:flex;flex-direction:column;gap:12px;margin-top:24px}.lex-option{background:var(--lex-bg-card);border:1.5px solid var(--lex-line);border-radius:var(--lex-r-md);padding:16px 20px;cursor:pointer;transition:all .2s ease;display:flex;align-items:center;gap:14px;font-size:15px;line-height:1.5;text-align:left;font-family:inherit;color:inherit;width:100%}.lex-option:hover:not(:disabled){border-color:var(--lex-ink-soft);transform:translateX(2px)}.lex-option:disabled{cursor:default}.lex-option.correct,.lex-option.selected{border-color:var(--lex-emerald);background:var(--lex-emerald-soft)}.lex-option.wrong{border-color:var(--lex-crimson);background:var(--lex-crimson-soft)}.lex-option-letter{width:28px;height:28px;border-radius:6px;background:var(--lex-bg);border:1px solid var(--lex-line);display:grid;place-items:center;font-family:var(--lex-mono);font-size:12px;font-weight:600;flex-shrink:0;transition:all .2s ease}.lex-option.correct .lex-option-letter,.lex-option.selected .lex-option-letter{background:var(--lex-emerald);color:var(--lex-bg-card);border-color:var(--lex-emerald)}.lex-option.wrong .lex-option-letter{background:var(--lex-crimson);color:var(--lex-bg-card);border-color:var(--lex-crimson)}.lex-match-wrap{display:grid;grid-template-columns:1fr 1fr;gap:18px 32px;margin-top:24px}.lex-match-col-head{font-family:var(--lex-mono);font-size:11px;letter-spacing:.15em;text-transform:uppercase;color:var(--lex-ink-mute);padding-bottom:12px;border-bottom:1px solid var(--lex-line);margin-bottom:12px}.lex-match-list{display:flex;flex-direction:column;gap:10px}.lex-match-item{background:var(--lex-bg-card);border:1.5px solid var(--lex-line);border-radius:var(--lex-r-md);padding:14px 18px;cursor:pointer;transition:all .18s ease;font-size:14px;line-height:1.45;user-select:none;text-align:left;font-family:inherit;color:inherit;width:100%}.lex-match-item:hover:not(.matched):not(:disabled){border-color:var(--lex-ink-soft)}.lex-match-item.selected{border-color:var(--lex-gold);background:var(--lex-gold-soft);transform:scale(1.01)}.lex-match-item.matched{opacity:.4;cursor:default;border-style:dashed}.lex-match-item.correct{border-color:var(--lex-emerald);background:var(--lex-emerald-soft);border-style:solid;opacity:1}.lex-match-item.wrong{border-color:var(--lex-crimson);background:var(--lex-crimson-soft);border-style:solid;opacity:1}.lex-match-item-bullet{font-family:var(--lex-serif);font-weight:500}.lex-match-fix-hint{display:block;margin-top:6px;font-family:var(--lex-mono);font-size:11px;color:var(--lex-crimson);font-style:italic}.lex-fill-sentence{font-family:var(--lex-serif);font-size:clamp(18px,2.6vw,22px);line-height:1.75;margin:24px 0;color:var(--lex-ink);font-variation-settings:"opsz" 60,"SOFT" 30}.lex-blank{display:inline-block;min-width:130px;padding:4px 14px;margin:0 4px;border:1.5px dashed var(--lex-line-strong);border-radius:var(--lex-r-sm);background:var(--lex-bg-card);text-align:center;color:var(--lex-ink-mute);font-size:18px;transition:all .2s ease;cursor:pointer;vertical-align:initial;font-family:inherit}.lex-blank.filled{background:var(--lex-emerald-soft);border:1.5px solid var(--lex-emerald);color:var(--lex-ink);font-style:normal}.lex-blank.target{border-color:var(--lex-gold);background:var(--lex-gold-soft)}.lex-blank.correct{background:var(--lex-emerald-soft);border-color:var(--lex-emerald);border-style:solid;color:var(--lex-ink)}.lex-blank.wrong{background:var(--lex-crimson-soft);border-color:var(--lex-crimson);border-style:solid;color:var(--lex-ink);animation:lex-shake .4s ease}.lex-word-bank{display:flex;flex-wrap:wrap;gap:10px;padding:18px;background:var(--lex-bg-card);border-radius:var(--lex-r-md);border:1px solid var(--lex-line);margin-top:16px}.lex-word-chip{padding:7px 16px;background:var(--lex-bg-elev);border:1.5px solid var(--lex-line);border-radius:999px;font-size:14px;cursor:pointer;transition:all .18s ease;user-select:none;font-family:var(--lex-serif);font-style:italic;font-weight:500;color:var(--lex-ink)}.lex-word-chip:hover:not(.used):not(:disabled){border-color:var(--lex-ink-soft);transform:translateY(-1px)}.lex-word-chip.used,.lex-word-chip:disabled{opacity:.3;cursor:default}.lex-seq-list{display:flex;flex-direction:column;gap:10px;margin-top:20px}.lex-seq-item{display:flex;align-items:center;gap:14px;background:var(--lex-bg-card);border:1.5px solid var(--lex-line);border-radius:var(--lex-r-md);padding:12px 16px;cursor:grab;transition:all .2s ease;user-select:none}.lex-seq-item:hover{border-color:var(--lex-ink-soft)}.lex-seq-item.dragging{opacity:.4}.lex-seq-item.correct,.lex-seq-item.over{border-color:var(--lex-emerald);background:var(--lex-emerald-soft)}.lex-seq-item.correct{cursor:default}.lex-seq-item.wrong{border-color:var(--lex-crimson);background:var(--lex-crimson-soft);cursor:default}.lex-seq-num{width:30px;height:30px;flex-shrink:0;background:var(--lex-bg-elev);border:1px solid var(--lex-line);border-radius:50%;display:grid;place-items:center;font-family:var(--lex-serif);font-weight:500;font-size:14px;color:var(--lex-ink-mute)}.lex-seq-text{font-size:14.5px;line-height:1.5;flex:1}.lex-seq-arrows{display:flex;flex-direction:column;gap:2px;margin-left:auto}.lex-seq-arrow{background:var(--lex-bg-elev);border:1px solid var(--lex-line);border-radius:4px;padding:0 6px;cursor:pointer;font-size:10px;line-height:1.4;color:var(--lex-ink-mute)}.lex-seq-arrow:hover{background:var(--lex-line);color:var(--lex-ink)}.lex-case-card{background:var(--lex-bg-card);border:1px solid var(--lex-line);border-radius:var(--lex-r-lg);padding:26px 28px;margin-bottom:24px;position:relative}.lex-case-stamp{position:absolute;top:16px;right:20px;font-size:10px;color:var(--lex-crimson);border:1px solid var(--lex-crimson);padding:3px 8px;border-radius:4px;letter-spacing:.15em;transform:rotate(2deg);opacity:.7}.lex-case-meta,.lex-case-stamp{font-family:var(--lex-mono);text-transform:uppercase}.lex-case-meta{font-size:11px;color:var(--lex-ink-mute);letter-spacing:.1em;margin-bottom:12px}.lex-case-title{font-family:var(--lex-serif);font-style:italic;font-size:22px;margin-bottom:14px;color:var(--lex-emerald)}.lex-case-text{font-size:14.5px;line-height:1.7;color:var(--lex-ink-soft)}.lex-case-text p+p{margin-top:12px}.lex-feedback{position:fixed;bottom:0;left:0;right:0;background:var(--lex-bg-card);border-top:1px solid var(--lex-line);padding:18px 32px;transform:translateY(110%);transition:transform .35s cubic-bezier(.34,1.56,.64,1);z-index:100;box-shadow:0 -8px 30px rgba(40,30,10,.08)}.lex-feedback.show{transform:translateY(0)}.lex-feedback.correct{background:var(--lex-emerald-soft);border-top-color:var(--lex-emerald)}.lex-feedback.wrong{background:var(--lex-crimson-soft);border-top-color:var(--lex-crimson)}.lex-feedback-inner{max-width:900px;margin:0 auto;display:flex;align-items:center;justify-content:space-between;gap:24px}.lex-feedback-content{flex:1}.lex-feedback-title{font-family:var(--lex-serif);font-size:22px;font-style:italic;margin-bottom:4px;font-weight:500}.lex-feedback.correct .lex-feedback-title{color:var(--lex-emerald)}.lex-feedback.wrong .lex-feedback-title{color:var(--lex-crimson)}.lex-feedback-text{font-size:14px;color:var(--lex-ink-soft);line-height:1.5}.lex-feedback-text em{font-style:italic;color:var(--lex-emerald);font-weight:500}.lex-nav-bar{display:flex;justify-content:space-between;gap:16px;margin-top:40px;max-width:720px;margin-left:auto;margin-right:auto}.lex-btn{font-family:var(--lex-sans);font-size:14px;font-weight:600;letter-spacing:.02em;padding:13px 26px;border-radius:999px;border:1.5px solid var(--lex-ink);background:var(--lex-bg);color:var(--lex-ink);cursor:pointer;transition:all .2s ease;display:inline-flex;align-items:center;gap:8px}.lex-btn:hover:not(:disabled){transform:translateY(-1px)}.lex-btn-primary{background:var(--lex-ink);color:var(--lex-bg-card)}.lex-btn-primary:hover:not(:disabled){background:var(--lex-emerald);border-color:var(--lex-emerald)}.lex-btn-ghost{border-color:var(--lex-line-strong);color:var(--lex-ink-soft);background:transparent}.lex-btn-icon{width:38px;height:38px;padding:0;justify-content:center;border-radius:50%;border-color:var(--lex-line-strong);background:var(--lex-bg-card)}.lex-btn:disabled{opacity:.4;cursor:not-allowed;pointer-events:none}.lex-complete{text-align:center;padding-top:30px;max-width:600px;margin:0 auto}.lex-emblem{width:130px;height:130px;margin:0 auto 32px;border-radius:50%;display:grid;place-items:center;position:relative;animation:lex-emblemPop .7s cubic-bezier(.34,1.56,.64,1)}.lex-emblem.passed{background:var(--lex-gold-bright);box-shadow:0 0 0 14px var(--lex-gold-soft),0 0 0 28px rgba(184,134,11,.05)}.lex-emblem.failed{background:var(--lex-crimson-soft);color:var(--lex-crimson);box-shadow:0 0 0 14px var(--lex-crimson-soft),0 0 0 28px rgba(139,30,46,.05)}@keyframes lex-emblemPop{0%{transform:scale(0);opacity:0}to{transform:scale(1);opacity:1}}.lex-emblem svg{width:60px;height:60px}.lex-complete-title{font-family:var(--lex-serif);font-size:clamp(34px,5vw,46px);font-weight:400;line-height:1.1;margin-bottom:12px;font-variation-settings:"opsz" 144,"SOFT" 50}.lex-complete-title em{font-style:italic;color:var(--lex-emerald)}.lex-complete-sub{font-size:16px;color:var(--lex-ink-soft);margin-bottom:36px}.lex-complete-stats{display:grid;grid-template-columns:repeat(3,1fr);gap:14px;max-width:520px;margin:0 auto 36px}.lex-complete-stat{background:var(--lex-bg-card);border:1px solid var(--lex-line);border-radius:var(--lex-r-lg);padding:22px 14px}.lex-complete-stat-num{font-family:var(--lex-serif);font-size:36px;font-weight:500;color:var(--lex-emerald);line-height:1;margin-bottom:6px}.lex-complete-stat-label{font-family:var(--lex-mono);font-size:11px;text-transform:uppercase;letter-spacing:.1em;color:var(--lex-ink-mute)}.lex-complete-actions{display:flex;gap:12px;justify-content:center;flex-wrap:wrap}.lex-confetti{position:fixed;pointer-events:none;inset:0;z-index:99;overflow:hidden}.lex-confetti span{position:absolute;width:8px;height:14px;top:-20px;animation:lex-confettiFall 2.6s ease-out forwards}@keyframes lex-confettiFall{to{transform:translateY(110vh) rotate(2turn);opacity:0}}@keyframes lex-shake{0%,to{transform:translateX(0)}20%{transform:translateX(-6px)}40%{transform:translateX(6px)}60%{transform:translateX(-4px)}80%{transform:translateX(4px)}}.lex-lock-card{background:linear-gradient(135deg,var(--lex-gold-soft) 0,var(--lex-bg-card) 100%);border:1px solid var(--lex-line-strong);border-left:3px solid var(--lex-gold);border-radius:var(--lex-r-lg);padding:22px 26px;margin-bottom:24px;display:flex;flex-direction:column;gap:14px}.lex-lock-card-row{display:flex;gap:16px;align-items:flex-start;justify-content:space-between}.lex-lock-card-icon{width:44px;height:44px;flex-shrink:0;background:var(--lex-ink);color:var(--lex-bg-card);display:grid;place-items:center;border-radius:var(--lex-r-md);box-shadow:var(--lex-shadow-sm)}.lex-lock-card-title{font-family:var(--lex-serif);font-size:18px;font-weight:500;font-style:italic;color:var(--lex-ink)}.lex-lock-card-text{font-size:14px;color:var(--lex-ink-soft);line-height:1.55;margin-top:2px}.lex-lang-switch{display:inline-flex;align-items:center;gap:4px;background:var(--lex-bg-card);border:1px solid var(--lex-line);padding:4px;border-radius:999px;box-shadow:var(--lex-shadow-sm)}.lex-lang-pill{padding:5px 12px;font-family:var(--lex-mono);font-size:11px;font-weight:600;letter-spacing:.08em;color:var(--lex-ink-mute);background:transparent;border:none;border-radius:999px;cursor:pointer;transition:all .18s ease}.lex-lang-pill:hover{color:var(--lex-ink)}.lex-lang-pill.active{background:var(--lex-ink);color:var(--lex-bg-card)}.lex-badge{display:inline-flex;align-items:center;gap:6px;font-family:var(--lex-mono);font-size:10px;letter-spacing:.12em;text-transform:uppercase;padding:3px 10px;border-radius:999px;font-weight:600}.lex-badge-beginner{background:var(--lex-emerald-soft);color:var(--lex-emerald)}.lex-badge-intermediate{background:var(--lex-gold-soft);color:var(--lex-gold)}.lex-badge-advanced{background:var(--lex-crimson-soft);color:var(--lex-crimson)}.lex-badge-coming{background:var(--lex-line);color:var(--lex-ink-mute)}.lex-back-link{display:inline-flex;align-items:center;gap:8px;font-family:var(--lex-mono);font-size:11px;letter-spacing:.1em;text-transform:uppercase;color:var(--lex-ink-mute);background:transparent;border:none;cursor:pointer;padding:6px 0;transition:color .18s ease}.lex-back-link:hover{color:var(--lex-ink)}@media (max-width:760px){.lex-topbar{padding:14px 18px}.lex-stage{padding:32px 18px 100px}.lex-lesson-row{flex-direction:column!important}.lex-lesson-card{width:100%}.lex-lesson-node,.lex-path-rail{display:none}.lex-match-wrap{gap:22px}.lex-complete-stats,.lex-match-wrap{grid-template-columns:1fr}.lex-feedback{padding:14px 18px}.lex-feedback-inner{flex-direction:column;align-items:stretch}.lex-compare-row{grid-template-columns:1fr}.lex-compare-row>div+div{border-left:none;border-top:1px solid var(--lex-line)}.lex-courses-grid{grid-template-columns:1fr}}.lex-dt-breadcrumb{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:22px}.lex-dt-crumb{display:inline-flex;align-items:center;gap:8px;padding:6px 12px;border:1px solid var(--lex-line);border-radius:999px;background:var(--lex-bg-card);cursor:pointer;font-family:var(--lex-mono);font-size:11px;letter-spacing:.08em;text-transform:uppercase;color:var(--lex-ink-mute);transition:border-color .2s ease,color .2s ease,transform .2s ease}.lex-dt-crumb:hover{border-color:var(--lex-emerald);color:var(--lex-ink);transform:translateY(-1px)}.lex-dt-crumb-num{color:var(--lex-ink-mute);font-weight:500}.lex-dt-crumb-ans{color:var(--lex-emerald);font-weight:600}.lex-dt-stage{min-height:320px;display:flex;align-items:stretch;justify-content:center}@keyframes lex-dt-fade-in{0%{opacity:0;transform:translateY(10px)}to{opacity:1;transform:translateY(0)}}.lex-dt-fade-in{animation:lex-dt-fade-in .35s ease both}.lex-dt-question{width:100%;background:var(--lex-bg-card);border:1px solid var(--lex-line);border-radius:var(--lex-r-xl);padding:32px 36px 28px;box-shadow:var(--lex-shadow-md);display:flex;flex-direction:column;gap:14px}.lex-dt-step-label{font-family:var(--lex-mono);font-size:11px;letter-spacing:.18em;text-transform:uppercase;color:var(--lex-ink-mute)}.lex-dt-q-text{font-family:var(--lex-serif);font-size:clamp(22px,2.8vw,28px);line-height:1.25;font-weight:400;letter-spacing:-.015em;color:var(--lex-ink);font-variation-settings:"opsz" 60,"SOFT" 50}.lex-dt-q-hint{font-size:14px;color:var(--lex-ink-mute);line-height:1.55;font-style:italic}.lex-dt-actions{display:grid;grid-template-columns:1fr 1fr;gap:12px;margin-top:12px}.lex-dt-btn{display:inline-flex;align-items:center;justify-content:center;gap:10px;padding:18px 24px;border-radius:var(--lex-r-md);border:1px solid var(--lex-line-strong);font-family:var(--lex-sans);font-size:15px;font-weight:600;letter-spacing:.02em;cursor:pointer;transition:transform .2s ease,box-shadow .2s ease,background .2s ease,border-color .2s ease,color .2s ease;background:var(--lex-bg-elev);color:var(--lex-ink)}.lex-dt-btn:hover{transform:translateY(-2px);box-shadow:var(--lex-shadow-md)}.lex-dt-btn-icon{display:inline-grid;place-items:center;width:24px;height:24px;border-radius:50%;font-size:12px;border:1px solid}.lex-dt-btn-yes{background:var(--lex-emerald);border-color:var(--lex-emerald);color:var(--lex-bg-card)}.lex-dt-btn-yes:hover{background:var(--lex-emerald-glow);border-color:var(--lex-emerald-glow)}.lex-dt-btn-no{background:var(--lex-bg-elev);border-color:var(--lex-line-strong);color:var(--lex-ink-soft)}.lex-dt-btn-no:hover{border-color:var(--lex-ink);color:var(--lex-ink)}.lex-dt-outcome{width:100%;background:var(--lex-bg-card);border:1px solid var(--lex-line);border-radius:var(--lex-r-xl);padding:32px 36px 28px;position:relative;box-shadow:var(--lex-shadow-md);display:flex;flex-direction:column;gap:16px;overflow:hidden}.lex-dt-outcome:before{content:"";position:absolute;left:0;top:0;bottom:0;width:4px;background:var(--lex-line-strong)}.lex-dt-outcome-positive{background:var(--lex-emerald-soft);border-color:var(--lex-emerald)}.lex-dt-outcome-positive:before{background:var(--lex-emerald)}.lex-dt-outcome-negative{background:var(--lex-crimson-soft);border-color:var(--lex-crimson)}.lex-dt-outcome-negative:before{background:var(--lex-crimson)}.lex-dt-outcome-neutral{background:var(--lex-gold-soft);border-color:var(--lex-gold)}.lex-dt-outcome-neutral:before{background:var(--lex-gold)}.lex-dt-outcome-stamp{position:absolute;top:18px;right:22px;font-family:var(--lex-mono);font-size:10px;letter-spacing:.2em;text-transform:uppercase;color:var(--lex-ink-mute);padding:4px 10px;border:1px solid;border-radius:4px;transform:rotate(2deg);opacity:.7;background:rgba(255,255,255,.4)}.lex-dt-outcome-title{font-family:var(--lex-serif);font-size:clamp(24px,3.2vw,32px);font-weight:400;line-height:1.2;letter-spacing:-.02em;color:var(--lex-ink);font-variation-settings:"opsz" 144,"SOFT" 50;padding-right:90px}.lex-dt-outcome-desc{font-size:15.5px;line-height:1.7;color:var(--lex-ink-soft)}.lex-dt-outcome-desc em{font-style:italic;color:var(--lex-emerald);font-weight:500}.lex-dt-outcome-negative .lex-dt-outcome-desc em{color:var(--lex-crimson)}.lex-dt-outcome-statute{margin-top:8px;padding:14px 18px;border-radius:var(--lex-r-md);background:var(--lex-bg-elev);border:1px solid var(--lex-line);border-left:3px solid var(--lex-emerald)}.lex-dt-outcome-negative .lex-dt-outcome-statute{border-left-color:var(--lex-crimson)}.lex-dt-outcome-neutral .lex-dt-outcome-statute{border-left-color:var(--lex-gold)}.lex-dt-outcome-statute-label{display:block;font-family:var(--lex-mono);font-size:11px;letter-spacing:.12em;text-transform:uppercase;color:var(--lex-ink-mute);margin-bottom:6px}.lex-dt-outcome-statute-text{font-size:14px;line-height:1.55;color:var(--lex-ink)}.lex-dt-outcome-actions{margin-top:4px;display:flex;justify-content:flex-end}@media (max-width:600px){.lex-dt-outcome,.lex-dt-question{padding:24px 22px 22px}.lex-dt-actions{grid-template-columns:1fr}.lex-dt-outcome-stamp{position:static;transform:none;align-self:flex-start;margin-bottom:4px;background:transparent}.lex-dt-outcome-title{padding-right:0}}