:root{--ink:#1f3435;--muted:#677876;--green:#176c59;--mint:#e8f2ea;--paper:#fbfaf6;--line:#dce3dc;--orange:#b86c35;--red:#a33b35;--mono:ui-monospace,"Cascadia Code",Consolas,monospace}*{box-sizing:border-box}body{margin:0;background:var(--paper);color:var(--ink);font:15px/1.65 system-ui,-apple-system,"Segoe UI",sans-serif}a{color:var(--green);text-decoration:none}a:hover{text-decoration:underline}button,input,textarea,select{font:inherit}button,.button{display:inline-block;cursor:pointer;border:1px solid var(--line);background:white;color:var(--ink);border-radius:9px;padding:9px 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var(--line);display:grid;grid-template-columns:40px 1fr auto;gap:14px;align-items:center}.lesson-number{display:grid;place-items:center;width:34px;height:34px;border:1px solid var(--line);border-radius:50%;color:var(--muted);font-size:12px}.lesson-number.done{background:var(--mint);border-color:var(--mint);color:var(--green)}.lesson-row h3{margin:0 0 6px;font-size:17px}.lesson-row p{margin:0;color:var(--muted);font-size:12px}.prose{max-width:760px}.prose h1{font-size:29px;margin:0 0 24px}.prose h2{font-size:22px;margin-top:30px}.prose p{margin-bottom:18px}.prose code:not(pre code){background:#eef1e9;padding:2px 5px;border-radius:4px;font:13px var(--mono)}pre{white-space:pre-wrap;overflow-wrap:anywhere;background:#eef2ec;padding:18px;border-radius:8px;font:13px/1.7 var(--mono);max-height:400px;overflow:auto}pre.code-block{background:#203936;color:#e7f2e9;white-space:pre;overflow-wrap:normal}.divider{border:0;border-top:1px solid var(--line);margin:30px 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var(--line)}.attempt-row:last-child{border:0}.author-layout{display:grid;grid-template-columns:230px minmax(0,1fr);gap:25px}.author-sidebar{background:#f0f3eb;border:1px solid var(--line);border-radius:12px;padding:15px;align-self:start}.author-sidebar button{display:block;text-align:left;background:transparent;border:0;width:100%;padding:9px;font-size:12px;font-weight:500}.author-sidebar button.selected{background:white;color:var(--green);font-weight:700}.author-sidebar h4{font-size:10px;letter-spacing:1.2px;text-transform:uppercase;margin:18px 7px 4px;color:var(--muted)}.author-toolbar{display:flex;justify-content:space-between;align-items:center;gap:12px;position:sticky;top:0;z-index:2;background:var(--paper);padding:12px 0;border-bottom:1px solid var(--line);margin-bottom:25px}.author-toolbar p{margin:0;font-size:12px;color:var(--muted)}.field-grid{display:grid;grid-template-columns:1fr 1fr;gap:16px}.field-grid label{margin-top:5px}.checklist{border:1px solid var(--line);border-radius:8px;padding:12px}.checklist label{font-weight:400;margin:6px 0}.order-row{display:flex;align-items:center;gap:5px;margin-bottom:5px;font-size:12px}.order-row span{flex:1}.order-row button{padding:2px 7px}.test-row{background:#f6f7f1;border:1px solid var(--line);border-radius:9px;padding:15px;margin:12px 0}.test-row textarea{font-family:var(--mono);font-size:12px;min-height:85px}.test-row .small{color:var(--muted)}.inline-form{display:flex;gap:12px;align-items:end}.inline-form label{flex:1}.operation{margin-bottom:15px}.operation details{margin-top:12px;font-size:12px}.operation details pre{font-size:11px}.profile-choice{width:100%;display:block;text-align:left;margin-bottom:8px}.hint-button{margin:4px 5px 5px 0;font-size:12px}.hint-text{padding:13px;background:var(--mint);border-radius:7px;font-size:13px;margin:8px 0}dialog{border:1px solid var(--line);border-radius:16px;padding:32px;max-width:480px;width:calc(100% - 36px);color:var(--ink);box-shadow:0 25px 100px #21362733}dialog::backdrop{background:#16302470}#toast{position:fixed;bottom:25px;right:25px;background:#203d35;color:white;padding:14px 20px;border-radius:10px;max-width:480px;display:none;z-index:20;font-size:13px}#connection:not(:empty){padding:8px 4vw;background:#fff0de;color:#98672c;font-size:12px}.pill-count{color:var(--muted);font-size:11px}.saved{color:var(--green)}@media(max-width:1000px){.top{height:auto;min-height:78px;flex-wrap:wrap;padding:17px 25px}.top nav{gap:15px}.beta{display:none}.task-layout{grid-template-columns:1fr}.hero{grid-template-columns:1fr 150px;gap:10px}.layout{grid-template-columns:190px 1fr;gap:20px}}@media(max-width:700px){h1{font-size:30px}.top nav{width:100%;font-size:12px;gap:14px;flex-wrap:wrap}.top nav button{margin-left:auto}.hero{display:block;padding-top:5px}.hero-art{display:none}.grid,.layout,.author-layout,.field-grid{grid-template-columns:1fr}.side{position:static;display:none}main{padding:28px 18px 45px}.card{padding:20px}.author-sidebar{max-height:190px;overflow:auto}.author-toolbar{flex-wrap:wrap}.author-toolbar .actions{margin:3px 0}.lesson-row{grid-template-columns:30px 1fr}.lesson-row .button{grid-column:2}.editor-box textarea{min-height:330px}footer{display:block;font-size:10px}footer span{display:block}.task-layout{gap:22px}}

.graph-tools{display:flex;flex-wrap:wrap;gap:14px;align-items:end;margin:24px 0}.graph-tools label{flex:1;min-width:170px}.graph-scroll{overflow:auto;background:#f7f9fc;border:1px solid #e0e6ee;border-radius:14px;margin:20px 0;padding:12px}.graph-scroll svg{min-width:950px;width:100%;font:12px system-ui}.graph-heading{font-weight:600;fill:#465569}.graph-scroll a:hover rect{stroke:#3263a4;stroke-width:2}.graph-node-list{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:12px;padding:20px}.graph-legend{display:inline-block;margin-left:14px}.card pre{white-space:pre-wrap;overflow-wrap:anywhere}.graph-tools select{width:100%}

.learning-filters{display:flex;flex-wrap:wrap;gap:16px;align-items:end}.learning-filters label{flex:1 1 180px;margin:0}.learning-filters p{flex-basis:100%}.catalogue-list{display:grid;gap:16px;margin:20px 0}.catalogue-list h3{margin:10px 0}.top nav{flex-wrap:wrap}.top{align-items:start}
@media(max-width:760px){.learning-filters{display:grid;grid-template-columns:1fr}.top nav{gap:12px}.catalogue-list .row{align-items:start;gap:8px;flex-wrap:wrap}}

.top nav [hidden], #student-fields[hidden]{display:none}.account-card{max-width:460px;margin:5vh auto}.form-status{color:var(--red);margin:8px 0 0}.form-status:empty{display:none}
.demo-import{margin:12px 0 20px}.demo-import .actions{margin-top:12px}