:root{--ink:#182d29;--muted:#64726e;--blue:#1b6c54;--green:#1b6c54;--lime:#cfef99;--paper:#f7f8f3;--line:#e1e6dc;--orange:#c86631;--card:#fff;--radius:17px;font-family:Inter,ui-sans-serif,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;color:var(--ink);background:var(--paper);font-synthesis:none}
*{box-sizing:border-box}body{margin:0}button,input,select,textarea{font:inherit}button,a,input,select,textarea{ -webkit-tap-highlight-color:transparent}button{cursor:pointer}button:disabled{cursor:default;opacity:.5}a{color:var(--green);text-underline-offset:3px}button:focus-visible,a:focus-visible,input:focus-visible,select:focus-visible,textarea:focus-visible{outline:3px solid #729cde;outline-offset:3px}button{border:0}h1,h2,h3,p{margin-top:0}h1{font-size:clamp(34px,4vw,57px);line-height:1.06;letter-spacing:-2px;font-weight:740;margin-bottom:20px}h2{font-size:26px;letter-spacing:-.8px}h3{font-size:18px;letter-spacing:-.2px}p{line-height:1.65;color:var(--muted)}.skip{position:fixed;top:-100px;left:10px;padding:12px;background:#fff;z-index:100}.skip:focus{top:10px}
.sidebar{position:fixed;inset:0 auto 0 0;width:236px;background:#142d28;color:#f7fff0;padding:31px 23px;display:flex;flex-direction:column;z-index:20}.brand{display:flex;gap:12px;align-items:center;color:white;text-decoration:none;font-size:20px;line-height:1.15;letter-spacing:-.4px}.brand b{font-weight:450;color:#b9cfbc}.brandmark{height:48px;width:45px;background:#cfef99;border-radius:12px;display:grid;place-items:center;color:#142d28;font-size:29px;font-weight:800;position:relative}.brandmark span{position:absolute;font-size:15px;right:4px;top:2px}.side-label{font-size:9px;letter-spacing:1.65px;color:#a5b7a9;margin:41px 0 15px}.nav-link{display:flex;gap:12px;align-items:center;border-radius:8px;padding:12px;color:#c5d3c8;text-decoration:none;font-size:13px;font-weight:520;margin:4px 0}.nav-link svg{width:18px;height:18px;opacity:.8}.nav-link:hover{background:#233e35}.nav-link.active{background:#cfef99;color:#142d28}.nav-link .nav-badge{font-size:9px;background:#48634e;color:white;border-radius:4px;padding:2px 5px;margin-left:auto}.sidebar-note{margin-top:auto;border-top:1px solid #395046;padding-top:25px;font-size:10px;letter-spacing:1px;color:#cfef99}.sidebar-note p{font-size:17px;letter-spacing:-.2px;color:#a9beb0;line-height:1.6;margin-top:14px}.status-dot{display:inline-block;width:7px;height:7px;background:#cfef99;border-radius:50%;margin-right:5px}.sidebar-bottom{font-size:9px;letter-spacing:1px;color:#a9bbae}.sidebar-bottom span{display:block;font-size:9px;letter-spacing:0;margin-top:8px;color:#80998a}.shell{margin-left:236px}.topbar{height:84px;background:var(--paper);border-bottom:1px solid var(--line);display:flex;align-items:center;justify-content:space-between;padding:0 40px;gap:15px}.topbar>span{font-size:10px;font-weight:650;letter-spacing:1.5px;color:var(--muted)}.top-actions{display:flex;align-items:center;gap:22px}.save-status{font-size:10px;color:var(--muted)}.learner-button{background:transparent;display:flex;align-items:center;gap:9px;font-size:12px;color:var(--ink)}.avatar{display:grid;place-items:center;background:#e7ecd9;border-radius:50%;width:30px;height:30px;font-size:11px;font-weight:750}.mobile-menu{display:none;background:none;font-size:22px}main{padding:34px 40px 52px;max-width:1560px;margin:auto;min-height:calc(100vh - 154px)}.footer{padding:15px 40px 24px;font-size:10px;color:var(--muted);border-top:1px solid var(--line);display:flex;justify-content:space-between;gap:15px}.eyebrow{font-size:10px;letter-spacing:1.65px;font-weight:700;color:var(--green);margin-bottom:16px}.eyebrow.light{color:#cfef99}.intro{max-width:650px;margin-bottom:25px}.page-heading{display:flex;justify-content:space-between;align-items:start;gap:20px;margin-bottom:27px}.page-heading h1{font-size:38px}.page-heading p{font-size:14px;max-width:700px;margin:0}.primary,.secondary,.text-button{display:inline-flex;align-items:center;justify-content:center;gap:8px;border-radius:8px;padding:12px 17px;text-decoration:none;font-size:12px;font-weight:650;line-height:1.3}.primary{background:var(--green);color:white}.primary:hover{background:#12503e}.secondary{background:white;border:1px solid var(--line);color:var(--ink)}.secondary:hover{border-color:#8b9f8a}.text-button{padding:7px 0;background:transparent;color:var(--green)}.button-row{display:flex;gap:10px;flex-wrap:wrap;align-items:center}.hero{display:grid;grid-template-columns:1.12fr 1fr;gap:20px;margin-bottom:28px}.hero-main{padding:34px;background:#eaf0dd;border-radius:var(--radius);position:relative;overflow:hidden;min-height:335px}.hero-main h1{font-size:clamp(34px,4vw,54px);max-width:490px}.hero-main p{font-size:14px;max-width:420px;color:#5c6f5f;margin-bottom:25px}.hero-main .hero-number{position:absolute;right:24px;bottom:25px;font-size:9px;letter-spacing:1px;color:#71805f}.hero-visual{background:#192f29;border-radius:var(--radius);position:relative;overflow:hidden;padding:26px;color:white}.hero-visual .visual-label{font-size:10px;letter-spacing:1.3px;color:#c0d2bf;display:flex;justify-content:space-between}.robot-schematic{width:100%;height:240px;display:block}.visual-footer{display:flex;justify-content:space-between;font-size:10px;color:#adc4ad;border-top:1px solid #3b5042;padding-top:13px}.metrics{display:grid;grid-template-columns:repeat(4,1fr);border:1px solid var(--line);border-radius:14px;background:white;margin-bottom:34px;overflow:hidden}.metric{padding:22px 24px;border-right:1px solid var(--line)}.metric:last-child{border:0}.metric strong{display:block;font-size:27px;letter-spacing:-1px;margin:5px 0 6px}.metric small{font-size:10px;color:var(--muted)}.metric-label{font-size:9px;font-weight:650;letter-spacing:1px;color:var(--muted)}.section-heading{display:flex;align-items:center;justify-content:space-between;gap:12px;margin:25px 0 17px}.section-heading h2{font-size:22px;margin:0}.cards{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}.card{background:white;border:1px solid var(--line);border-radius:var(--radius);padding:25px}.card p{font-size:12px}.path-card{display:flex;flex-direction:column;position:relative;min-height:250px;transition:transform .18s}.path-card:hover{transform:translateY(-3px)}.path-icon{width:38px;height:38px;display:grid;place-items:center;background:#edf2e6;color:var(--green);border-radius:10px;font-family:monospace;font-size:18px;margin-bottom:24px}.path-card .path-top{display:flex;justify-content:space-between}.badge{font-size:9px;line-height:1.3;letter-spacing:.4px;display:inline-block;padding:5px 8px;border-radius:5px;background:#edf2e5;color:#446343;font-weight:650}.badge.advanced{background:#f5eae1;color:#a85731}.badge.intermediate{background:#e8edf6;color:#4a6388}.path-card h3{margin-bottom:8px}.path-card .path-footer{margin-top:auto;border-top:1px solid var(--line);padding-top:16px;display:flex;justify-content:space-between;font-size:10px;color:var(--muted)}.progress-track{height:5px;background:#e9eee3;border-radius:10px;overflow:hidden;margin-top:15px}.progress-track div{height:100%;background:var(--green);border-radius:10px}.home-bottom{display:grid;grid-template-columns:1.2fr 1fr;gap:18px;margin-top:26px}.continue-card{display:flex;gap:20px;align-items:center;background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:22px}.continue-number{padding:17px;background:#edf2e4;border-radius:12px;font-size:20px;font-family:monospace}.continue-card h3{font-size:15px;margin:5px 0}.continue-card p{font-size:11px;margin:0}.continue-card .primary{margin-left:auto;white-space:nowrap}.note-card{background:#f2ece0;border:1px solid #e8dfcc;border-radius:var(--radius);padding:23px}.note-card h3{font-size:14px;margin-bottom:8px}.note-card p{font-size:11px;margin:0}.toolbar{display:flex;gap:12px;flex-wrap:wrap;align-items:center;margin-bottom:23px}.search{flex:1;min-width:180px;border:1px solid var(--line);background:white;padding:12px 15px;border-radius:8px;font-size:12px}.filters{display:flex;gap:5px}.filter{padding:10px 13px;background:white;color:var(--muted);border-radius:7px;font-size:11px;border:1px solid var(--line)}.filter.active{color:white;background:var(--green);border-color:var(--green)}.lesson-list{display:grid;gap:11px}.lesson-row{display:grid;grid-template-columns:42px 1fr auto;gap:17px;align-items:center;padding:19px 22px;border:1px solid var(--line);border-radius:12px;background:white;cursor:pointer;text-decoration:none;color:var(--ink)}.lesson-row:hover{border-color:#8eac82}.lesson-num{width:38px;height:38px;display:grid;place-items:center;border:1px solid var(--line);border-radius:9px;color:#72856e;font-size:13px;font-family:monospace}.lesson-num.done{background:#e4f0d3;border:0;color:var(--green)}.lesson-row h3{font-size:14px;margin-bottom:5px}.lesson-row p{font-size:11px;line-height:1.45;margin:0}.lesson-row .lesson-meta{text-align:right;display:grid;gap:8px;font-size:10px;color:var(--muted)}.lesson-layout{display:grid;grid-template-columns:minmax(0,1fr) 245px;gap:26px}.lesson-header{margin-bottom:22px}.lesson-header h1{font-size:37px;margin-top:14px}.lesson-header p{font-size:14px}.tabs{display:flex;gap:7px;border-bottom:1px solid var(--line);margin-bottom:25px;overflow:auto}.tab{white-space:nowrap;padding:13px 16px;border-bottom:3px solid transparent;background:transparent;font-size:12px;color:var(--muted)}.tab.active{border-color:var(--green);color:var(--green);font-weight:750}.reading-section{padding:25px 28px;border:1px solid var(--line);border-radius:12px;background:white;margin-bottom:17px}.reading-section h2{font-size:22px}.reading-section p{font-size:14px;white-space:pre-line;color:#4c6257}.reading-section li{font-size:13px;line-height:1.7;color:#4c6257;padding:5px}.reading-section ol{padding-left:20px}.code-block{position:relative;background:#182d28;border-radius:10px;overflow:hidden;margin:17px 0}.code-block .code-label{font-size:9px;padding:9px 15px;color:#b2c6b3;border-bottom:1px solid #384c3e;letter-spacing:1px}.code-block pre{margin:0;padding:20px;white-space:pre;overflow:auto;color:#dcf0d3;font:12px/1.8 ui-monospace,SFMono-Regular,Consolas,monospace}.copy-code{position:absolute;right:8px;top:4px;background:#2c4437;color:#dcebd5;padding:5px 9px;border-radius:4px;font-size:9px}.lesson-aside .card{padding:20px;margin-bottom:16px}.lesson-aside h3{font-size:12px}.lesson-aside li{font-size:11px;line-height:1.65;color:var(--muted);margin-bottom:10px}.lesson-aside ul{padding-left:16px}.lesson-aside .source{font-size:10px;display:block;margin-bottom:12px}.lesson-aside .card p{font-size:11px}.quiz-question{background:white;border:1px solid var(--line);border-radius:12px;margin-bottom:16px;padding:23px}.quiz-question h3{font-size:16px;line-height:1.5}.quiz-option{display:flex;gap:10px;border:1px solid var(--line);padding:13px;border-radius:8px;margin:8px 0;font-size:12px;cursor:pointer;line-height:1.5}.quiz-option:has(input:checked){background:#edf4e6;border-color:#80a06d}.feedback{padding:14px;background:#edf4e5;border-radius:8px;font-size:12px;line-height:1.6;margin:15px 0;color:#335c3c}.feedback.error{background:#faece3;color:#8e4832}.callout{padding:18px 22px;background:#eaf1df;border-left:3px solid #76975e;border-radius:0 9px 9px 0;font-size:12px;line-height:1.7;margin:18px 0;color:#496242}.editor-shell{background:#182d28;border-radius:12px;border:1px solid #334a3d;overflow:hidden}.editor-top{display:flex;align-items:center;justify-content:space-between;gap:10px;padding:12px 18px;color:#bdd0b5;font-family:monospace;font-size:11px;border-bottom:1px solid #36503c}.editor{width:100%;min-height:270px;display:block;resize:vertical;background:#182d28;color:#e9f4df;padding:20px;border:0;font:13px/1.8 ui-monospace,SFMono-Regular,Consolas,monospace;tab-size:4;outline-offset:-3px}.editor-actions{padding:13px 17px;background:#21392d;display:flex;gap:9px;flex-wrap:wrap;align-items:center}.editor-actions .primary{background:#cfef99;color:#142d28}.editor-actions .secondary{background:#31483a;color:#e6f1dd;border-color:#49604c}.editor-status{font-size:10px;color:#bccfb4;margin-left:auto}.console{background:#10211a;color:#c8e2bc;margin:0;padding:19px;min-height:118px;white-space:pre-wrap;overflow-wrap:anywhere;font:12px/1.8 ui-monospace,SFMono-Regular,Consolas,monospace;max-height:400px;overflow:auto}.input-line{display:flex;gap:12px;align-items:center;margin:14px 0;font-size:11px}.input-line input,.input-line textarea{padding:9px;border:1px solid var(--line);border-radius:7px;flex:1}.exercise-title{font-size:18px}.details{background:white;border:1px solid var(--line);border-radius:9px;padding:14px 20px;margin:15px 0;font-size:12px}.details summary{cursor:pointer;font-weight:650}.details p{margin-top:15px}.checklist-item{display:flex;align-items:start;gap:10px;padding:13px 0;font-size:13px;line-height:1.6;border-bottom:1px solid var(--line)}.checklist-item input{margin-top:5px;accent-color:var(--green)}.checklist-item:last-child{border:0}.wizard-layout{display:grid;grid-template-columns:220px minmax(0,1fr);gap:24px}.step-nav{display:grid;gap:7px;align-content:start}.step-link{display:flex;align-items:center;gap:10px;text-align:left;border-radius:8px;padding:14px;background:white;border:1px solid var(--line);font-size:12px;color:var(--muted)}.step-link.active{background:#e8f1d9;border-color:#a7bc8b;color:var(--green)}.step-link span{font-family:monospace;font-size:11px}.wizard-panel{background:white;border:1px solid var(--line);border-radius:14px;padding:28px}.wizard-panel h2{font-size:27px}.wizard-panel p,.wizard-panel li{font-size:13px;line-height:1.8}.wizard-panel ol{padding-left:22px}.wizard-controls{display:flex;gap:18px;flex-wrap:wrap;margin-bottom:24px;align-items:end}.field{display:grid;gap:8px;font-size:11px;flex:1}.field input,.field select{border:1px solid var(--line);padding:11px;border-radius:7px;width:100%;color:var(--ink);background:white}.wizard-actions{display:flex;justify-content:space-between;border-top:1px solid var(--line);margin-top:22px;padding-top:20px}.two-column{display:grid;grid-template-columns:1fr 1fr;gap:24px}.module-choice{display:flex;gap:10px;padding:14px;border:1px solid var(--line);border-radius:9px;margin-bottom:10px;align-items:start}.module-choice label{flex:1;font-size:12px}.module-choice label small{display:block;font-family:monospace;color:var(--muted);font-size:10px;margin-top:5px}.module-choice input[type=text]{width:105px;border:1px solid var(--line);border-radius:5px;padding:7px;font-size:10px}.module-choice:has(input:checked){background:#f0f5e6;border-color:#bdcfa4}.builder-output{position:sticky;top:15px}.lab-tabs{display:flex;gap:10px;margin-bottom:22px;flex-wrap:wrap}.lab-tab{background:white;border:1px solid var(--line);padding:13px 18px;border-radius:9px;font-size:12px;color:var(--ink)}.lab-tab.active{background:var(--green);color:white}.schedule{display:grid;gap:13px}.session{padding:23px;background:white;border:1px solid var(--line);border-radius:12px;display:grid;grid-template-columns:65px 1fr;gap:20px}.session-number{font-size:12px;color:var(--green);font-family:monospace}.session h3{font-size:17px}.session p{font-size:12px}.session details{font-size:12px}.session details p{margin-top:14px}.reference-grid{display:grid;grid-template-columns:1fr 1fr;gap:18px}.glossary{display:grid;grid-template-columns:145px 1fr;gap:15px;font-size:12px}.glossary dt{font-weight:700}.glossary dd{margin:0;color:var(--muted);line-height:1.7}.diagnostic{background:white;padding:25px;border:1px solid var(--line);border-radius:14px;margin-top:20px}.toast{position:fixed;bottom:25px;left:50%;transform:translateX(-50%) translateY(100px);background:#142d28;color:#e5f2d6;padding:14px 24px;border-radius:10px;z-index:100;font-size:12px;transition:transform .2s;max-width:90vw;box-shadow:0 8px 30px #10221a22}.toast.show{transform:translateX(-50%) translateY(0)}dialog{border:1px solid var(--line);border-radius:18px;max-width:480px;padding:30px;color:var(--ink)}dialog::backdrop{background:#142d2877}dialog p{font-size:12px}dialog label{display:grid;gap:8px;margin:20px 0;font-size:12px}dialog input,dialog select{border:1px solid var(--line);padding:12px;border-radius:8px}.empty{padding:50px;text-align:center;color:var(--muted)}.loading{padding:80px;text-align:center;color:var(--muted)}.kpi{font:12px/1.5 monospace;padding:8px 12px;background:#f0f4e8;border-radius:6px}.small{font-size:11px}.source-list a{display:block;font-size:12px;margin-bottom:15px}.rubric{width:100%;border-collapse:collapse;font-size:11px}.rubric td,.rubric th{padding:12px;border:1px solid var(--line);text-align:left;line-height:1.7}.print-only{display:none}
@media(min-width:1600px){.hero-main h1{font-size:59px}.hero-main{padding:40px}}@media(max-width:1100px){.sidebar{width:200px;padding:25px 18px}.shell{margin-left:200px}main{padding:28px}.topbar{padding:0 28px}.hero{grid-template-columns:1.2fr 1fr}.hero-main{padding:26px}.hero-main h1{font-size:41px}.save-status{display:none}.lesson-layout{grid-template-columns:1fr 210px}.cards{gap:12px}.card{padding:20px}.continue-card{flex-wrap:wrap}.continue-card .primary{margin-left:0}.two-column{gap:16px}}
@media(max-width:850px){.hero{grid-template-columns:1fr}.hero-visual{min-height:270px}.hero-main h1{max-width:600px}.cards{grid-template-columns:1fr}.path-card{min-height:190px}.path-icon{margin-bottom:12px}.path-card .path-footer{margin-top:12px}.home-bottom,.two-column,.reference-grid{grid-template-columns:1fr}.lesson-layout{grid-template-columns:1fr}.lesson-aside{display:grid;grid-template-columns:1fr 1fr;gap:15px}.metric{padding:16px}.metrics{grid-template-columns:1fr 1fr}.metric:nth-child(2){border-right:0}.metric:nth-child(-n+2){border-bottom:1px solid var(--line)}.wizard-layout{grid-template-columns:1fr}.step-nav{grid-template-columns:repeat(4,1fr)}.step-link{padding:11px;font-size:10px}.builder-output{position:static}.hero-visual .robot-schematic{height:230px}}
@media(max-width:640px){.sidebar{transform:translateX(-100%);transition:transform .2s;width:236px}.sidebar.open{transform:translateX(0);box-shadow:20px 0 70px #142d2840}.shell{margin:0}.mobile-menu{display:block}.topbar{height:65px;padding:0 18px}.topbar>span{font-size:8px;letter-spacing:.6px}.top-actions{gap:8px}.learner-button{font-size:11px}.learner-button .avatar{width:27px;height:27px}main{padding:22px 18px 36px}.hero-main{padding:26px;min-height:310px}.hero-main h1{font-size:42px;letter-spacing:-1.6px}.hero-main .hero-number{display:none}.hero-visual{padding:22px}.section-heading h2{font-size:20px}.metric strong{font-size:24px}.page-heading{flex-direction:column}.page-heading h1{font-size:33px}.lesson-header h1{font-size:30px}.lesson-aside{grid-template-columns:1fr}.reading-section{padding:21px}.reading-section p{font-size:13px}.lesson-row{grid-template-columns:35px 1fr;gap:12px;padding:15px}.lesson-row .lesson-meta{grid-column:2;display:flex;align-items:center;gap:12px;text-align:left}.lesson-num{width:33px;height:33px}.filters{width:100%;overflow:auto}.filter{padding:10px 11px}.step-nav{grid-template-columns:1fr 1fr}.wizard-panel{padding:22px}.glossary{grid-template-columns:100px 1fr}.footer{font-size:9px;padding:20px;flex-direction:column}.session{grid-template-columns:35px 1fr;padding:18px;gap:10px}.tabs .tab{padding:12px 11px}.editor{font-size:12px}.input-line{flex-direction:column;align-items:stretch}}
@media print{.sidebar,.topbar,.footer,.button-row,.toolbar,.tabs,.toast,.copy-code{display:none!important}.shell{margin:0}main{padding:0}.card,.reading-section,.session{break-inside:avoid}.code-block pre{color:#111;background:#f5f5f5;white-space:pre-wrap}.print-only{display:block}.lesson-layout,.two-column,.reference-grid{display:block}body{background:white}.lesson-aside{display:none}}