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    Current colors taken from GitHub's CSS
  *)
*/:root{--ink:#e6edf5;--muted:#a5b3c6;--green:#e6edf5;--paper:#172232;--white:#111824;--line:#283446;--pale:#172232;--gold:#a5b3c6;--radius:18px;font-family:Inter Variable,-apple-system,BlinkMacSystemFont,Segoe UI,sans-serif;color:var(--ink);background:var(--paper);font-synthesis:none}*{box-sizing:border-box}body{margin:0}a{color:inherit;text-decoration:none}button,input,textarea,select{font:inherit}button,a,input,textarea,select{-webkit-tap-highlight-color:transparent}button{cursor:pointer}button:disabled{cursor:not-allowed;opacity:.5}a:focus-visible,button:focus-visible,input:focus-visible,textarea:focus-visible,select:focus-visible{outline:3px solid #a5b3c6;outline-offset:3px}h1,h2,h3,p{margin-top:0}h1,h2,h3{letter-spacing:-.035em}h1{font-size:36px;line-height:1.15}h2{font-size:26px;line-height:1.25}h3{font-size:18px;line-height:1.35}p{line-height:1.75;color:#a5b3c6}small{line-height:1.5}label{font-size:13px;font-weight:550}input,textarea,select{display:block;width:100%;border:1px solid #283446;border-radius:10px;background:#111824;padding:12px 13px;color:var(--ink);margin-top:7px;line-height:1.5}textarea{resize:vertical}select{appearance:auto}button{border:0}pre{margin:0;white-space:pre-wrap;overflow-wrap:anywhere}code{font-family:JetBrains Mono Variable,monospace}.button{border:1px solid transparent;display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:14px 21px;border-radius:9px;font-size:13px;font-weight:600;line-height:1.3;transition:background .15s,transform .15s;white-space:nowrap}.button:hover{transform:translateY(-1px)}.button.primary{background:var(--green);color:#111824}.button.primary:hover{background:#e6edf5}.button.secondary{background:#111824;border-color:#283446;color:var(--ink)}.button.secondary:hover{background:#172232}.button.small{padding:10px 15px;font-size:12px}.text-button{padding:7px 3px;background:transparent;font-size:12px;color:#c3ccda;border:0}.button.text-button{border:0;background:transparent;padding:0;font-size:12px;color:#a5b3c6}.pill{font-size:12px;line-height:1.35;letter-spacing:.025em;border:1px solid var(--line);border-radius:20px;padding:6px 10px;display:inline-flex;align-items:center;background:#111824;color:#a5b3c6;white-space:nowrap}.pill.draft,.pill.approved{background:#172232;color:#b4aaff;border-color:#283446}.pill.subtle{font-size:12px;padding:3px 7px;border:0;background:#172232}.eyebrow{font-size:12px;letter-spacing:.15em;font-weight:650;text-transform:uppercase;color:#a5b3c6;line-height:1.5}.dot,.status-dot{width:6px;height:6px;border-radius:50%;background:#a5b3c6;display:inline-block;vertical-align:middle}.status-dot{background:#73849d}.status-dot.online{background:#a5b3c6}.muted{font-size:12px;color:#a5b3c6}.fine-print{font-size:12px;color:#a5b3c6;line-height:1.65}.header{height:90px;display:flex;align-items:center;justify-content:space-between;border-bottom:1px solid var(--line);padding:0 5.5%;gap:25px;background:var(--paper);position:relative;z-index:5}.wordmark{display:flex;gap:12px;align-items:center;font-size:16px;font-weight:650;letter-spacing:-.035em}.logo{height:40px;width:40px;background:var(--green);color:#111824;border-radius:11px;display:grid;place-items:center;font-size:27px;font-family:Inter 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36px}.hero-facts{display:flex;gap:30px}.hero-facts>div{padding-right:27px;border-right:1px solid var(--line)}.hero-facts>div:last-child{border:0;padding:0}.hero-facts strong{display:block;font-size:20px;font-weight:550;letter-spacing:-.04em}.hero-facts span{display:block;font-size:12px;color:#a5b3c6;margin-top:7px}.hero-visual{position:relative;padding:38px 0 34px}.hero-visual:before{content:"";position:absolute;inset:9px -22px 0 12px;border-radius:48% 42% 40% 43%;background:#283446;transform:none;z-index:-1}.floating-tag{position:absolute;top:10px;right:20px;background:#111824;border:1px solid #283446;box-shadow:0 7px 20px #00000020;border-radius:7px;font-size:12px;padding:11px 14px;z-index:2;transform:none}.floating-tag .dot{margin-right:5px}.illustration-editor{border:1px solid #283446;border-radius:13px;background:#111824;overflow:hidden;box-shadow:0 20px 60px 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#172232;padding-top:17px;font-size:12px;color:#a5b3c6}.course-line a{color:#b4aaff;font-size:12px}.how-section{display:grid;grid-template-columns:1fr 1.4fr;gap:14%;background:#172232;border-radius:24px;margin-bottom:65px;padding:55px}.how-section h2{font-family:Inter Variable,sans-serif;font-size:43px;line-height:1.15;font-weight:400;letter-spacing:-.05em;margin:20px 0}.how-section>div>p{font-size:12px;color:#a5b3c6}.how-list article{display:flex;gap:23px;padding:20px 0;border-bottom:1px solid #283446}.how-list article:last-child{border:0}.how-list h3{font-size:16px;font-weight:550;margin:0 0 9px}.how-list p{font-size:12px;line-height:1.8;margin:0;color:#a5b3c6}.step-number{font-family:Inter Variable,sans-serif;font-size:21px;color:#a5b3c6;padding-top:2px}.closing{text-align:center;padding:15px 0 65px}.closing h2{font-family:Inter Variable,sans-serif;font-size:34px;font-weight:400;margin-bottom:25px}.footer{border-top:1px solid var(--line);padding:25px 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var(--line)}.avatar{width:35px;height:35px;background:#283446;color:#b4aaff;display:inline-grid;place-items:center;border-radius:50%;font-size:13px;vertical-align:middle}.sidebar-bottom strong{display:block;font-size:12px;margin:12px 0 20px}.sidebar-bottom label{font-size:12px;color:#a5b3c6}.sidebar-bottom select{padding:7px 5px;font-size:12px;background:transparent}.sidebar-bottom .text-button{margin-top:12px;font-size:12px}.app-main{width:calc(100% - 205px);max-width:1440px;margin:0 auto;padding:40px 42px 60px}.page-heading{display:flex;align-items:center;justify-content:space-between;gap:20px;margin:0 0 29px}.page-heading h1{margin:12px 0;font-size:32px;font-weight:500;letter-spacing:-.05em}.page-heading p{font-size:12px;margin:0}.dashboard-grid{display:grid;grid-template-columns:2fr 1fr;gap:22px;margin-bottom:26px}.welcome-panel{padding:34px 37px;background:#172232;border:1px solid #283446;border-radius:var(--radius)}.welcome-panel h2{font-family:Inter 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20px;border-radius:8px;font-size:12px;color:#a5b3c6}.track-tabs a.selected{background:var(--green);color:#111824}.course-banner{display:flex;align-items:center;gap:20px;background:#111824;border:1px solid var(--line);padding:25px;border-radius:var(--radius);margin-bottom:25px}.course-banner h2{margin:0 0 7px;font-size:23px}.course-banner p{margin:0;font-size:12px}.course-banner .pill{margin-left:auto}.lesson-list{border:1px solid var(--line);border-radius:var(--radius);background:#111824;overflow:hidden}.lesson-row{display:flex;gap:24px;align-items:center;border-bottom:1px solid var(--line);padding:24px}.lesson-row:last-child{border:0}.lesson-index{font-family:Inter Variable,sans-serif;color:#73849d;font-size:25px;font-weight:400;min-width:28px}.lesson-row>div:nth-child(2){flex:1}.lesson-row h3{font-size:16px;margin:9px 0 6px;font-weight:550}.lesson-row p{font-size:12px;margin:0;max-width:550px}.lesson-row-actions{display:flex;align-items:center;gap:10px}.lesson-row-actions 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-10px 20px;padding:12px 10px;border-radius:8px}.code-caption{display:flex;justify-content:space-between;font-size:12px;color:#a5b3c6;padding:10px 0}.code-block{padding:14px;background:#172232;border:1px solid #283446;border-radius:8px;color:#b4aaff;font-size:12px;line-height:1.8}.source-link{font-size:12px;color:#a5b3c6;text-decoration:underline}.editor-panel{display:flex;flex-direction:column}.editor-toolbar{padding:14px 17px;display:flex;justify-content:space-between;align-items:center;border-bottom:1px solid #172232;background:#111824}.file-label{font-family:JetBrains Mono Variable,monospace;font-size:12px;color:#a5b3c6}.editor-toolbar .button{padding:7px 10px;font-size:12px}#code-editor{height:360px;min-height:300px;flex:1}.cm-editor{height:100%}.cm-editor.cm-focused{outline:none}.cm-scroller{overflow:auto}.preview-heading{padding:12px 17px;border-top:1px solid var(--line);border-bottom:1px solid 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