:root{color-scheme:light;--bg:#f5f5ed;--paper:#fffef9;--ink:#172e2b;--muted:#65736b;--line:#dedfd3;--green:#caef95;--dark:#122e28;--orange:#f9c08a;font-family:Tahoma,'Segoe UI',Arial,sans-serif}
*{box-sizing:border-box}body{margin:0;background:var(--bg);color:var(--ink)}button,a,input,textarea,select{-webkit-tap-highlight-color:transparent}button,select{font:inherit}button{cursor:pointer}button:disabled{cursor:default}button:focus-visible,a:focus-visible,textarea:focus-visible,select:focus-visible{outline:3px solid #738b38;outline-offset:4px}a{color:inherit;text-decoration:none}.shell{max-width:1260px;margin:auto;padding:0 40px}header{display:flex;align-items:center;justify-content:space-between;gap:20px;min-height:110px;border-bottom:1px solid var(--line)}.brand{display:flex;gap:12px;align-items:center;font-weight:900;font-size:29px}.brand-mark{display:grid;place-items:center;background:var(--green);border:1px solid var(--ink);border-radius:14px;width:44px;height:48px;font:bold 43px Georgia;transform:rotate(-7deg)}.brand small{display:block;font:10px monospace;letter-spacing:3px;margin-top:4px}.exam{font-size:11px;color:var(--muted)}.exam b{display:block;color:var(--ink);font-size:13px;margin-top:7px}.icon-button{background:transparent;border:1px solid var(--line);border-radius:50px;padding:11px 16px;font-size:12px;color:var(--ink)}main{min-height:calc(100svh - 190px)}footer{display:flex;justify-content:space-between;align-items:center;gap:16px;padding:28px 0;font-size:11px;color:var(--muted);border-top:1px solid var(--line)}.text-button{border:0;background:transparent;color:var(--muted);font-size:11px;text-decoration:underline}.eyebrow{display:inline-flex;align-items:center;gap:8px;font-size:11px;font-weight:bold;letter-spacing:1px}.eyebrow:before{content:'';width:7px;height:7px;background:#6c9b43;border-radius:50%}h1,h2,h3,p{margin-top:0}h1{font-size:clamp(36px,4.6vw,61px);line-height:1.4;letter-spacing:-2px;margin-bottom:20px;font-weight:900}h1 em{font-style:normal;position:relative;white-space:nowrap}h1 em:after{content:'';position:absolute;bottom:0;right:0;width:100%;height:8px;background:var(--green);z-index:-1}h2{font-size:27px;line-height:1.5}p{line-height:1.9;color:var(--muted)}.hero{display:grid;grid-template-columns:1.1fr 1fr;gap:65px;padding:56px 0 44px;align-items:center}.hero-copy>.eyebrow{margin-bottom:21px}.hero-copy>p{font-size:15px;max-width:450px}.hero-actions{display:flex;gap:12px;margin:27px 0 16px}.primary,.secondary{border:1px solid var(--ink);border-radius:12px;padding:15px 23px;font-weight:bold;font-size:14px;min-height:48px}.primary{background:var(--green);color:var(--ink);box-shadow:0 3px 0 var(--ink)}.primary:hover{background:#b8e880;transform:translateY(-1px)}.secondary{background:transparent;color:var(--ink)}.secondary:hover{background:#e9ebdf}.fine{font-size:11px!important;color:var(--muted)}.setup{display:flex;align-items:center;gap:12px;font-size:12px}.setup select{background:transparent;border:0;border-bottom:1px solid var(--muted);padding:7px;color:var(--ink)}.preview{background:var(--dark);color:#fffef1;padding:26px;border-radius:23px;box-shadow:10px 12px 0 #e5e6d9;position:relative;transform:rotate(-1deg)}.window-bar{display:flex;justify-content:space-between;align-items:center;direction:ltr;font:11px monospace;color:#a3b6a8;border-bottom:1px solid #ffffff1c;padding-bottom:19px}.dots{display:flex;gap:5px}.dots i{width:7px;height:7px;background:#698377;border-radius:50%}.dots i:first-child{background:var(--green)}.preview-label{display:flex;justify-content:space-between;margin:23px 0 16px;font-size:12px}.preview-label span:last-child{color:var(--green)}pre{direction:ltr;text-align:left;white-space:pre-wrap;overflow-wrap:anywhere;tab-size:2;font:16px/1.9 Consolas,'Courier New',monospace;margin:0}code{font-family:Consolas,'Courier New',monospace}.preview pre{color:#e7eddd;font-size:18px;line-height:2}.syntax-key{color:#c1b2ff}.syntax-number{color:#cee991}.syntax-string{color:#ffd08d}.preview-options{display:grid;grid-template-columns:1fr 1fr;gap:10px;margin-top:20px;direction:ltr}.preview-options span{padding:11px;text-align:center;border:1px solid #657967;border-radius:9px;font:14px monospace}.preview-options .chosen{background:var(--green);color:var(--ink);border-color:var(--green)}.preview-foot{display:flex;align-items:center;gap:8px;margin-top:18px;font-size:11px;color:#a8bdae}.spark-label{position:absolute;top:-13px;left:20px;background:var(--orange);color:var(--ink);padding:9px 15px;border:1px solid var(--ink);border-radius:8px;transform:rotate(5deg);font-size:11px;font-weight:bold}.stats-row{display:grid;grid-template-columns:repeat(3,1fr);gap:12px;margin:6px 0 36px}.stat{padding:19px 22px;background:#eceee2;border-radius:12px;display:flex;align-items:center;gap:13px}.stat strong{font-size:24px}.stat span{font-size:11px;color:var(--muted)}.section-head{display:flex;justify-content:space-between;align-items:center;margin-bottom:18px}.section-head h2{font-size:19px;margin:0}.section-head>span{font-size:11px;color:var(--muted)}.level-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:12px;padding-bottom:35px}.level-card{background:var(--paper);border:1px solid var(--line);border-radius:13px;padding:20px;text-align:right;color:var(--ink);position:relative}.level-card:hover{border-color:#7e926e;transform:translateY(-2px)}.level-number{font:12px Consolas,monospace;padding:7px 9px;background:var(--accent);border-radius:7px;display:inline-block;margin-bottom:17px}.level-card strong{display:block;font-size:14px;margin-bottom:9px}.level-card small{display:block;font-size:10px;line-height:1.7;color:var(--muted)}.mini-track{height:3px;background:#e7e9df;border-radius:3px;margin-top:18px;overflow:hidden}.mini-track i{display:block;height:100%;background:#65904d}.level-card .count{font:10px monospace;color:var(--muted);position:absolute;left:19px;top:24px}.session{max-width:850px;margin:0 auto;padding:30px 0 40px}.session-top{display:flex;align-items:center;justify-content:space-between;gap:15px;margin-bottom:19px}.session-top .secondary{padding:9px 14px;font-size:12px;min-height:38px}.score-chips{display:flex;gap:8px;font-size:12px}.chip{padding:9px 12px;border-radius:9px;background:#e6ebdc}.chip.hot{background:#ffe0b8}.session-meter{display:flex;gap:14px;align-items:center;font-size:11px;color:var(--muted);margin-bottom:25px}.track{flex:1;height:5px;background:#dfe4d6;overflow:hidden;border-radius:20px}.track i{display:block;height:100%;background:#70974c;transition:width .3s}.question-card{background:var(--paper);border:1px solid var(--line);border-radius:20px;padding:30px;box-shadow:0 7px 0 #e9ebdf}.question-meta{display:flex;justify-content:space-between;align-items:center;font-size:11px;color:var(--muted);margin-bottom:17px}.tag{background:#e9eddf;padding:7px 10px;border-radius:6px}.question-card h2{font-size:23px;margin-bottom:19px}.code-box{background:var(--dark);color:#edf2e1;padding:23px;border-radius:12px;position:relative;margin-bottom:18px}.code-caption{font:10px monospace;letter-spacing:2px;color:#b1c1aa;margin-bottom:12px;direction:ltr}.answers{display:grid;grid-template-columns:1fr 1fr;gap:11px}.answer{padding:17px;border:1px solid #d2d9ca;border-radius:11px;background:#fffef8;color:var(--ink);text-align:right;display:flex;align-items:center;gap:12px;min-height:60px;font-size:14px}.answer.output{direction:ltr;text-align:left;font:17px Consolas,monospace}.answer:hover:not(:disabled){border-color:#6a844d;background:#f0f5e5}.key{display:grid;place-items:center;width:25px;height:25px;flex:none;border:1px solid #dde2d4;border-radius:6px;font:11px monospace;color:var(--muted)}.answer.correct{background:#e6f4d4;border-color:#7aa84c;color:#29491c}.answer.wrong{background:#fff0e9;border-color:#cb826c;color:#8c382e}.question-bottom{display:flex;align-items:center;justify-content:space-between;margin-top:19px;gap:12px}.hint-button{background:transparent;border:0;color:#577145;padding:9px 0;font-size:12px}.hint{background:#f7edce;padding:12px 15px;border-radius:9px;font-size:13px;line-height:1.8;margin-top:12px}.feedback{padding:19px;border-radius:12px;background:#e9f2dc;border:1px solid #d0dfba;margin-top:18px;line-height:1.8;font-size:13px}.feedback.retry{background:#fff1e7;border-color:#ead6c0}.feedback strong{display:block;font-size:17px;margin-bottom:5px}.feedback p{margin:0;color:var(--ink)}.feedback .primary{display:block;width:100%;margin-top:18px}.feedback pre{background:#17352c;color:#ecf2e5;border-radius:7px;padding:12px;font-size:13px;margin-top:12px}.timer{font-variant-numeric:tabular-nums}.pace{font-size:10px;color:var(--muted);margin:17px 0 0;line-height:1.8;text-align:center}.code-editor{width:100%;min-height:185px;resize:vertical;direction:ltr;text-align:left;font:16px/1.8 Consolas,monospace;border:1px solid #849781;background:#122e28;color:#f1f4e8;padding:18px;border-radius:12px;tab-size:2}.expected{direction:ltr;unicode-bidi:isolate;display:inline-block;white-space:pre-wrap;background:#e6ebdf;padding:3px 9px;border-radius:5px;font:14px monospace}details{font-size:11px;color:var(--muted);margin:13px 0;line-height:1.9}summary{cursor:pointer}.run-output{background:#e7ecdf;border-radius:8px;padding:12px;margin-top:12px;font-size:12px}.run-output pre{font-size:14px}.result{text-align:center;max-width:760px;margin:auto;padding:50px 0}.result .badge{display:grid;place-items:center;margin:0 auto 20px;width:80px;height:80px;border-radius:25px;background:var(--green);font-size:40px;border:1px solid var(--ink);transform:rotate(-6deg)}.result h1{font-size:38px;letter-spacing:-1px;margin-bottom:9px}.result .stats-row{margin:26px 0}.result .stat{justify-content:center}.result .hero-actions{justify-content:center}.review-list{text-align:right;margin-top:30px}.review-item{background:var(--paper);border:1px solid var(--line);border-radius:12px;padding:18px;margin-bottom:12px;line-height:1.8;font-size:13px}.review-item pre{font-size:13px;line-height:1.7;background:#e9ecdf;padding:12px;border-radius:6px;margin:10px 0}.review-item p{margin-bottom:0}.empty{padding:30px;text-align:center}dialog{border:1px solid var(--line);border-radius:20px;padding:30px;max-width:440px;width:calc(100% - 32px);color:var(--ink);background:var(--paper)}dialog::backdrop{background:#0b201cc9;backdrop-filter:blur(5px)}dialog .primary,dialog .secondary{display:block;width:100%;margin-top:13px}dialog p{font-size:14px}.storage-warning{background:#ffebcf;padding:12px;font-size:12px;line-height:1.8;border-radius:9px;margin:12px 0}.home-foot{font-size:11px;color:var(--muted);line-height:1.9;margin-bottom:24px}.session h2:focus,.result h1:focus{outline:0}.muted{color:var(--muted)}
@media(min-width:900px){.level-card:last-child{grid-column:span 2}.level-card:last-child .mini-track{max-width:80%}}
@media(max-width:760px){.shell{padding:0 20px}header{min-height:85px}.brand{font-size:24px}.brand-mark{width:36px;height:40px;font-size:34px}.exam{display:none}.icon-button{font-size:11px;padding:9px 12px}.hero{grid-template-columns:1fr;gap:34px;padding:32px 0}.hero-copy{text-align:center}.hero-copy>p{margin:0 auto;font-size:14px}.hero-copy>.eyebrow{margin-bottom:16px}h1{font-size:40px;letter-spacing:-1px}.hero-actions,.setup{justify-content:center}.preview{max-width:460px;width:100%;margin:auto;transform:none;box-shadow:6px 7px 0 #e5e6d9}.preview pre{font-size:16px}.stats-row{gap:8px;margin-bottom:27px}.stat{padding:14px 8px;display:block;text-align:center}.stat strong{display:block;font-size:23px;margin-bottom:5px}.stat span{font-size:10px}.level-grid{grid-template-columns:1fr 1fr}.level-card{padding:16px}.level-card strong{font-size:13px}.level-card .count{left:14px;top:22px}.section-head h2{font-size:17px}.section-head>span{font-size:10px}.question-card{padding:20px 16px;border-radius:16px}.session{padding-top:21px}.question-card h2{font-size:20px}.code-box{padding:18px 14px}.code-box pre{font-size:15px}.answer{padding:12px 10px;font-size:12px;gap:8px}.answer.output{font-size:16px}.answers{gap:9px}.question-bottom{margin-top:13px}.key{width:22px;height:22px}.chip{padding:8px;font-size:11px}.session-top{gap:7px}.score-chips{gap:5px}.result{padding-top:35px}.result h1{font-size:30px}.result .hero-actions{flex-wrap:wrap}.primary,.secondary{font-size:13px;padding:13px 17px}footer{flex-wrap:wrap;justify-content:center;text-align:center;font-size:10px}.code-editor{font-size:16px}.level-card:last-child{grid-column:span 2}}
@media(prefers-reduced-motion:reduce){*,*:before,*:after{transition:none!important;transform:none!important;scroll-behavior:auto!important}}
[hidden]{display:none!important}.coach-controls{display:flex;flex-wrap:wrap;gap:7px;margin:20px 0 10px}.mode-button{font-size:11px;border:1px solid #bfcbb6;background:transparent;color:var(--ink);padding:10px 12px;border-radius:9px;min-height:42px}.mode-button.active{background:#e4f0d3;border-color:#718c4e}.coach-metrics{display:grid;grid-template-columns:repeat(3,1fr);gap:12px;border:1px solid var(--line);border-radius:13px;background:var(--paper);padding:20px;margin:0 0 20px}.coach-metrics>div{text-align:center;padding:0 9px;border-left:1px solid var(--line)}.coach-metrics>div:last-child{border:0}.coach-metrics b{display:block;font-size:21px;line-height:1.6}.coach-metrics span{display:block;font-size:10px;color:var(--muted);line-height:1.8;margin-top:5px}.lesson-card{background:var(--paper);border:1px solid var(--line);border-top:5px solid #b0d97e;padding:27px;border-radius:16px;line-height:1.9}.lesson-card h2{font-size:24px;margin:13px 0}.lesson-card pre{background:var(--dark);color:#f0f4e4;padding:17px;border-radius:10px;margin-bottom:16px}.lesson-card ol{padding-right:24px;font-size:15px;line-height:2}.trap{font-size:13px;background:#fff0cf;color:#644e28;padding:13px;border-radius:8px}.lesson-card .primary{width:100%}.safety-check{border-right:3px solid #a2c87a;padding:8px 13px;margin-top:20px;font-size:11px;line-height:1.8}.safety-check b,.safety-check span{display:block}.safety-check span{color:var(--muted)}.question-bottom{flex-wrap:wrap}#trace-panel{border:1px solid #c2d4ae;border-radius:12px;padding:18px;margin-top:20px;background:#f1f5e8}.trace-heading{display:flex;justify-content:space-between;gap:10px;font-size:12px;margin-bottom:13px}#trace-action,#trace-output{background:var(--dark);color:#f4f6e8;padding:12px;border-radius:7px;font-size:14px;min-height:40px}.trace-vars{display:flex;flex-wrap:wrap;gap:8px;margin-top:12px}.trace-vars span{background:#dfeccf;border:1px solid #c6d7b5;border-radius:7px;padding:8px;direction:ltr;font:14px Consolas,monospace}#trace-panel p{font-size:11px;margin:14px 0 8px}.trace-actions{display:flex;justify-content:space-between;gap:10px;margin-top:17px}.coach-assessment{font-size:12px!important;border-bottom:1px solid #cad8ba;padding-bottom:11px;margin-bottom:10px!important}.round-advice{font-size:13px;padding:16px;border-radius:10px;background:#e7eedc}.privacy-note{padding:17px;border:1px solid var(--line);border-radius:12px;margin:10px 0 25px}.privacy-note p{font-size:12px}.import-label{display:inline-block;cursor:pointer;font-size:12px}.import-label input{display:block;max-width:220px;margin-top:8px;font-size:10px}#recall-form{grid-column:1/-1;display:grid;gap:12px}#recall-form label{font-size:13px}#recall{width:100%;min-height:52px;border:2px solid #92ab76;background:#fffef8;border-radius:9px;padding:12px;font:20px Consolas,monospace}#recall:focus-visible{outline:3px solid #a8cd7f;outline-offset:2px}.gentle .preview{display:none}.gentle .hero{grid-template-columns:1fr;max-width:700px;margin:auto;text-align:center}.gentle .hero-copy>p{margin-inline:auto}.gentle .hero-actions,.gentle .coach-controls,.gentle .setup{justify-content:center}.gentle .question-card h2{font-size:26px}.gentle .answer{font-size:17px}.gentle .pace{font-size:12px}.gentle .session .timer{display:none}.gentle *{transition:none!important;transform:none!important}
@media(max-width:760px){.coach-controls{justify-content:center}.coach-metrics{gap:3px;padding:14px 6px}.coach-metrics b{font-size:18px}.coach-metrics span{font-size:9px}.coach-metrics>div{padding:0 5px}.lesson-card{padding:20px 17px}.lesson-card h2{font-size:21px}.lesson-card pre{font-size:14px}.lesson-card ol{font-size:14px}.safety-check{font-size:10px}.question-bottom .text-button{min-height:42px}.trace-heading{font-size:11px}.trace-actions .secondary,.trace-actions .primary{padding:12px;font-size:12px}.hero{gap:30px}.mode-button{font-size:10px}.privacy-note .secondary{font-size:11px;padding:10px}}
.gentle .setup{display:none}