:root{font-family:Arial,Helvetica,sans-serif;color:#f4f7ff;background:#0b101b;color-scheme:dark;line-height:1.65;--green:#b1f777;--muted:#acbad0;--border:#2d3b52}*{box-sizing:border-box}body{margin:0}a{color:var(--green);text-underline-offset:4px}a:hover{color:white}button,a,input,textarea{touch-action:manipulation}button,input,textarea{font:inherit}button{cursor:pointer;border:0;border-radius:8px;padding:12px 20px;background:var(--green);color:#16260b;font-weight:bold}button:disabled{opacity:.45;cursor:default}button:hover:not(:disabled){filter:brightness(1.1)}button:focus-visible,a:focus-visible,input:focus-visible,textarea:focus-visible,summary:focus-visible{outline:3px solid #8cbcff;outline-offset:4px}.secondary{background:#28384f;color:#fff}.text-button{background:none;padding:8px 0;color:var(--muted);font-size:12px}.mast{display:flex;align-items:center;justify-content:space-between;padding:22px 4vw;border-bottom:1px solid var(--border)}.logo{display:flex;align-items:center;gap:12px;font-size:38px;font-weight:900;letter-spacing:-2px;text-decoration:none;color:white;line-height:1}.logo span{font-size:10px;letter-spacing:2px;line-height:1.5}.toplinks{display:flex;align-items:center;gap:24px;font-size:12px}.tag{border:1px solid #4d6541;color:var(--green);border-radius:20px;padding:7px 14px;letter-spacing:2px;font-size:10px}.shell{display:grid;grid-template-columns:330px minmax(0,1fr);max-width:1500px;margin:auto}.shell>aside{padding:36px 28px;border-right:1px solid var(--border);background:#101725}h1{font-size:30px;line-height:1.18;letter-spacing:-1px;margin:18px 0}h1 span{color:var(--green)}.muted,.small{color:var(--muted)}.small{font-size:12px}.eyebrow{font-size:10px;letter-spacing:2.4px;color:var(--green);font-weight:bold}.progress-label{display:flex;justify-content:space-between;font-size:12px;margin-top:28px}progress{width:100%;height:8px;accent-color:var(--green)}nav{display:grid;gap:10px;margin-top:24px}nav a{display:flex;gap:12px;text-decoration:none;padding:14px;border:1px solid var(--border);border-radius:10px;background:#172235;color:#d3deef;align-items:center;font-size:13px;line-height:1.4}nav a[aria-current=step]{border-color:var(--green);background:#24372b;color:white}nav .number{background:#2d405b;border-radius:50%;min-width:28px;height:28px;display:grid;place-items:center;font-weight:bold}.aside-note{border-top:1px solid var(--border);margin-top:32px;padding-top:24px;font-size:12px;color:var(--muted)}main{padding:36px clamp(20px,4vw,64px);min-width:0}h2{font-size:clamp(28px,3vw,42px);line-height:1.2;letter-spacing:-1px;margin:18px 0 12px}.lead{font-size:17px;color:var(--muted)}.lesson-kicker{display:flex;justify-content:space-between;gap:16px;font-size:11px;text-transform:uppercase;letter-spacing:1px;color:var(--muted)}.audio-panel{padding:22px;border:1px solid var(--border);border-radius:12px;background:#182338;margin:28px 0}.audio-panel p{margin:4px 0 12px}.audio-panel audio{width:100%;max-width:600px;display:block;margin:12px 0}.audio-panel .small{margin-bottom:0}.step{border:1px solid var(--border);border-radius:12px;margin:18px 0;background:#111b2c;overflow:hidden;scroll-margin-top:20px}.step.current{border-color:#7fa856}.step-head{display:flex;align-items:center;gap:14px;padding:20px 24px 0}.step-head h3{font-size:20px;line-height:1.3;margin:0;flex:1}.step-head .number{font-size:12px;color:var(--green);font-weight:bold}.listen-step{padding:5px 9px;font-size:11px;background:#27394f;color:#dbe7fa}.step-body{padding:0 24px 22px}.step-body>p{color:#d0daeb}.action{background:#1b2a3f;border-left:3px solid var(--green);padding:14px 16px;color:#e7effb;font-size:14px}.action strong{display:block;color:var(--green);font-size:10px;letter-spacing:2px;margin-bottom:5px}.step-links{display:flex;flex-wrap:wrap;gap:12px;margin-top:16px;font-size:13px}.check-row{display:flex;align-items:flex-start;gap:10px;margin-top:22px;padding-top:16px;border-top:1px solid var(--border);font-size:13px;cursor:pointer}.check-row input{margin-top:5px;accent-color:var(--green);width:17px;height:17px;flex-shrink:0}.prompt{margin-top:18px}.prompt textarea{width:100%;min-height:270px;resize:vertical;background:#090f1c;color:#dde8fa;border:1px solid #40536e;border-radius:8px;padding:16px;font-family:Consolas,monospace;font-size:12px;line-height:1.8;white-space:pre-wrap}.copy-status{font-size:12px;color:var(--green);margin-left:10px}.lesson-bottom{display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:14px;margin:28px 0}.lesson-bottom p{font-size:12px;color:var(--muted)}.resource-section,#certificate-section{border-top:1px solid var(--border);margin-top:40px;padding-top:30px}.resources{display:grid;grid-template-columns:1fr 1fr;gap:12px}.resources a{display:flex;justify-content:space-between;gap:12px;border:1px solid var(--border);padding:14px;border-radius:8px;font-size:13px;text-decoration:none}.resources span{font-size:10px;color:var(--muted);white-space:nowrap}summary{cursor:pointer;font-weight:bold;font-size:14px;margin:20px 0}video{width:100%;border-radius:8px}#student-name{display:block;width:100%;max-width:380px;padding:11px;margin:6px 0 14px;border:1px solid #40536e;border-radius:7px;background:#172438}footer{margin-top:50px;border-top:1px solid var(--border);padding-top:24px;font-size:11px;color:#93a4be}#print-area{display:none}.skip{position:absolute;top:-100px;left:12px;background:#fff;color:#000;padding:10px;z-index:9}.skip:focus{top:10px}@media(min-width:1000px){.shell>aside{position:sticky;top:0;align-self:start;min-height:100vh}}@media(max-width:900px){.shell{grid-template-columns:1fr}.shell>aside{border-right:0;border-bottom:1px solid var(--border);padding:26px 20px}aside h1{font-size:26px}aside .muted{max-width:650px}nav{grid-template-columns:repeat(3,minmax(0,1fr))}nav a{padding:10px;align-items:flex-start}.aside-note{display:none}main{padding:26px 20px}.toplinks>a{display:none}.resources{grid-template-columns:1fr}}@media(max-width:520px){nav{grid-template-columns:1fr}.lesson-kicker{flex-direction:column;gap:4px}.step-head{padding:18px 16px 0;gap:8px}.step-head h3{font-size:17px}.step-body{padding:0 16px 16px}.listen-step{font-size:10px;padding:5px}.audio-panel{padding:16px}.toplinks{gap:8px}.tag{font-size:8px}.lesson-bottom button{font-size:12px;padding:11px}.prompt textarea{min-height:340px}h2{font-size:29px}}@media print{@page{size:A4 landscape;margin:16mm}body>*{display:none!important}body #print-area{display:block!important;border:4px double #243a55;color:#182335;background:white;text-align:center;padding:25mm 10mm;font-family:Georgia,serif}#print-area h1{font-size:32pt}#print-area h2{font-size:27pt}#print-area h3{font-size:17pt}#print-area p{color:#243a55}#print-area small{font-size:9pt}}