:root{--ink:#173b32;--muted:#566b63;--paper:#f6f6f0;--green:#217a57;--mint:#e6f3e9;--line:#d4ded5;--gold:#efd084}*{box-sizing:border-box}body{margin:0;background:var(--paper);color:var(--ink);font:16px/1.65 system-ui,sans-serif}header,main{max-width:1340px;margin:auto}header{display:flex;justify-content:space-between;gap:20px;padding:24px 32px;border-bottom:1px solid var(--line)}main{padding:0 32px}.brand{font-size:24px;font-weight:900;text-decoration:none;color:var(--ink)}.brand span{color:var(--green)}a{color:var(--green);text-underline-offset:4px}button,input,textarea,select{font:inherit}button{padding:11px 17px;background:var(--green);border:1px solid var(--green);border-radius:8px;color:white;font-weight:700;cursor:pointer}button:hover{filter:brightness(.95)}button:disabled{opacity:.45;cursor:default}.quiet{background:transparent;color:var(--green);border-color:#b8cbbd}button:focus-visible,a:focus-visible,input:focus-visible,textarea:focus-visible,select:focus-visible,summary:focus-visible{outline:3px solid #b07a18;outline-offset:3px}input,select,textarea{border:1px solid var(--line);background:#fff;color:var(--ink);border-radius:6px;padding:10px;width:100%;max-width:100%}textarea{resize:vertical}label{display:block;font-size:14px;font-weight:700;margin:12px 0 7px}label input,label select,label textarea{margin-top:6px}.hero{display:grid;grid-template-columns:1.45fr 1fr;align-items:center;gap:60px;padding:60px 0 40px}.hero>*{min-width:0}h1{font-size:clamp(40px,5.6vw,72px);line-height:1.08;letter-spacing:-2.5px;margin:18px 0}h1 em{font-style:normal;color:var(--green)}h2{font-size:32px;line-height:1.2;margin-top:12px}h3{line-height:1.35}.lead{font-size:19px;color:var(--muted);max-width:650px}.eyebrow{font-size:11px;font-weight:850;letter-spacing:1.6px;color:var(--green)}.hero-card{background:#173f34;color:white;padding:30px;border-radius:18px;box-shadow:10px 10px 0 #dce5d7}.hero-card .eyebrow{color:var(--gold)}.hero-card pre{background:#244e42;color:#ffdfa1}.hero-card>strong{font-size:32px}.mini-grid{display:grid;grid-template-columns:2fr 1fr 1fr;border:1px solid #537469;border-radius:8px;overflow:hidden}.mini-grid>*{padding:8px;border:1px solid #537469}.small{font-size:13px;color:var(--muted)}.notice{padding:20px 24px;border-left:4px solid var(--green);background:var(--mint);border-radius:8px}.progress-row{display:flex;gap:24px;align-items:center;margin:28px 0}.progress-row>div{white-space:nowrap;font-size:13px}.progress-row strong{font-size:21px}progress{flex:1;accent-color:var(--green);height:10px;min-width:50px}nav{display:flex;gap:8px;overflow:auto;border-bottom:1px solid var(--line);margin-bottom:28px;padding-bottom:4px}nav button{background:none;border:0;color:var(--muted);font-size:13px;white-space:nowrap;padding:14px 10px;border-radius:0}nav button.active{color:var(--green);border-bottom:3px solid var(--green)}.learn-layout{display:grid;grid-template-columns:250px minmax(0,1fr);gap:28px}aside{align-self:start;position:sticky;top:15px}#lesson-list{display:grid;gap:5px;max-height:63vh;overflow:auto;padding:4px}.lesson{background:transparent;text-align:left;color:var(--muted);border:0;font-size:13px;padding:10px}.lesson.selected{background:#e3eee5;color:var(--green);box-shadow:inset 3px 0 var(--green)}article{padding:28px;background:#fff;border:1px solid var(--line);border-radius:14px;margin-bottom:24px;min-width:0}.mission{background:#faf4dc;border-left:3px solid var(--gold);padding:18px;margin:20px 0}.actions{display:flex;flex-wrap:wrap;gap:10px;margin:18px 0}pre{white-space:pre-wrap;overflow-wrap:anywhere;background:#f1f5ef;padding:18px;border-radius:8px;font:13px/1.75 ui-monospace,monospace;max-height:450px;overflow:auto}code{overflow-wrap:anywhere}fieldset{min-width:0;border:0;padding:0;margin:18px 0}fieldset label{font-weight:400;display:flex;gap:10px;align-items:start}fieldset input{width:auto;margin-top:7px}.result{padding:18px;background:var(--mint);border-left:3px solid var(--green);border-radius:8px;margin:20px 0;white-space:pre-wrap;overflow-wrap:anywhere}.result.fail{background:#fff1e6;border-color:#b56327}.table-scroll{overflow:auto;margin:18px 0}table{border-collapse:collapse;width:100%;font-size:14px}th,td{border:1px solid var(--line);padding:9px;text-align:left}th{background:#edf4ee}#grid table{min-width:570px}#grid input{min-width:80px;padding:7px}#grid th:first-child{width:30px}.controls{display:grid;grid-template-columns:repeat(auto-fit,minmax(160px,1fr));gap:18px}.cards{display:grid;grid-template-columns:repeat(auto-fit,minmax(130px,1fr));gap:15px;margin:20px 0}.card{background:#f0f5ef;border-radius:10px;padding:18px}.card strong{display:block;font-size:26px;overflow-wrap:anywhere}.card span{font-size:13px;color:var(--muted)}#code{min-height:270px;background:#17382f;color:#f3f6ec;font:14px/1.7 ui-monospace,monospace}.bar-row{margin:14px 0}.bar-track{height:24px;background:#edf3eb;border-radius:4px;margin:5px 0}.bar{height:100%;background:var(--green);border-radius:4px}.sources{padding:20px 0}footer{border-top:1px solid var(--line);padding:25px 0;color:var(--muted);font-size:13px}#project-checks label{display:flex;align-items:start;gap:12px;font-weight:400}#project-checks input{width:auto;margin-top:7px}[hidden]{display:none!important}@media(max-width:850px){.hero{gap:30px}.learn-layout{grid-template-columns:210px minmax(0,1fr)}.progress-row{flex-wrap:wrap}progress{min-width:150px}}@media(max-width:680px){main{padding:0 16px}header{padding:18px 16px}.hero{grid-template-columns:1fr;padding:32px 0;gap:25px}.learn-layout{grid-template-columns:1fr}aside{position:static}#lesson-list{max-height:220px}.hero-card{padding:22px}article{padding:20px}.progress-row{gap:14px}h2{font-size:28px}h1{letter-spacing:-1.8px}nav{margin-top:15px}}
.app-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:12px}.app-grid span{padding:14px;border:1px solid #56776a;border-radius:8px;font-size:13px}.app-grid b{display:block;color:#f5d98c;font-size:17px}.workflow-step{display:flex;gap:14px;align-items:center;padding:16px;background:#f0f5ef;border:1px solid var(--line);border-radius:10px;margin:10px 0}.workflow-step p{flex:1;margin:0}.workflow-step button{font-size:12px;padding:7px}.agenda-row{display:grid;grid-template-columns:1fr 110px;gap:15px}#handoff label{display:flex;gap:12px;font-weight:400}#handoff input{width:auto;margin-top:7px}@media(max-width:500px){.workflow-step{flex-wrap:wrap}.workflow-step p{flex-basis:100%}.agenda-row{grid-template-columns:1fr 85px}}