:root{color-scheme:dark;--bg:#0b1320;--panel:#142235;--edge:#2c4157;--text:#f1f5f9;--muted:#adc0d2;--mint:#77e0b5;font-family:Inter,Segoe UI,system-ui,sans-serif;color:var(--text);background:var(--bg)}
*{box-sizing:border-box}body{margin:0}a{color:var(--mint);text-underline-offset:4px}button,input{font:inherit}button,a,input,summary{-webkit-tap-highlight-color:transparent}button,summary{cursor:pointer}button{color:var(--mint);background:transparent;border:1px solid var(--edge);border-radius:8px;min-height:44px;padding:8px 12px}button:hover{background:#24384b}a:focus-visible,button:focus-visible,input:focus-visible,summary:focus-visible{outline:3px solid var(--mint);outline-offset:4px}[hidden]{display:none!important}.skip-link{position:absolute;top:-80px;left:16px;padding:14px;background:var(--bg);z-index:10}.skip-link:focus{top:8px}
.topbar{max-width:1280px;margin:auto;padding:28px 40px;display:flex;justify-content:space-between;gap:16px;border-bottom:1px solid var(--edge)}.brand{font-weight:850;letter-spacing:1px;text-decoration:none;color:white}.brand span{font-size:11px;color:var(--muted);font-weight:500}main{max-width:1280px;margin:auto;padding:0 40px}.hero{padding:70px 0 52px;background:radial-gradient(ellipse at 85% 30%,#1c403944,transparent 55%)}.eyebrow{color:var(--mint);font-size:12px;font-weight:800;letter-spacing:1.7px}.hero h1{font-size:clamp(42px,6vw,76px);line-height:1.06;letter-spacing:-2.5px;margin:22px 0}.hero em{font-style:normal;color:var(--mint)}p{line-height:1.65;color:var(--muted)}.hero>p:not(.eyebrow){font-size:19px}.hero-meta{display:flex;gap:12px;flex-wrap:wrap;margin-top:30px}.hero-meta span{border:1px solid var(--edge);border-radius:30px;padding:8px 14px;font-size:12px;color:#c3d4e4}.section-heading{display:flex;align-items:center;justify-content:space-between;gap:16px}h2{font-size:27px;letter-spacing:-.7px}.role-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:14px}.role-card{display:flex;flex-direction:column;text-decoration:none;border:1px solid var(--edge);border-radius:16px;padding:24px;background:var(--panel)}.role-card:hover,.role-card[aria-current=true]{border-color:var(--mint);background:#1a3039}.role-number{color:var(--mint);font-size:13px;letter-spacing:2px}.role-card h3{color:white;font-size:21px;margin:24px 0 0}.role-card p{font-size:14px;margin:12px 0 26px}.role-cta{margin-top:auto;font-size:13px;font-weight:700}.search-row{display:flex;flex-wrap:wrap;align-items:center;gap:16px;margin:40px 0}.search-row label{font-weight:700}.search-row input{flex:1;min-width:210px;color:var(--text);background:#142235;border:1px solid var(--edge);padding:14px;border-radius:10px}.search-row p{font-size:13px}.lesson{scroll-margin-top:24px;border-top:1px solid var(--edge);padding:35px 0 52px}.lesson-heading{display:flex;justify-content:space-between;align-items:flex-start;gap:20px}.lesson-heading h2{margin:12px 0}.lesson-heading .eyebrow span{color:var(--muted);letter-spacing:0;font-weight:400}.text-link{font-size:13px;white-space:nowrap;padding-top:14px}.prerequisite{background:#192c40;border-left:3px solid var(--mint);border-radius:0 8px 8px 0;padding:14px 18px;font-size:14px;margin-bottom:28px}.lesson-grid{display:grid;grid-template-columns:minmax(0,1.15fr) minmax(0,1fr);gap:36px}.watch-column{min-width:0}video{width:100%;aspect-ratio:16/9;background:black;border:1px solid var(--edge);border-radius:12px;display:block}.media-note{font-size:12px;margin:12px 0}.video-status:empty{display:none}.downloads{display:flex;flex-wrap:wrap;align-items:center;gap:16px;margin:12px 0 24px;font-size:13px}.downloads button{font-size:13px}.steps>h3{margin-top:0}.steps>ol{padding-left:25px;margin-bottom:0}.steps>ol>li{padding:0 0 20px 8px}.steps>ol>li::marker{color:var(--mint);font-weight:800}.step-heading{display:flex;justify-content:space-between;gap:8px;align-items:center}.step-heading h4{margin:0;font-size:16px}.step-heading button{font-size:12px;white-space:nowrap}.path{font-size:12px;color:var(--mint);margin:6px 0}.steps ul{padding-left:18px;font-size:14px;color:var(--muted);line-height:1.7}.practice{padding:8px 20px;border-radius:12px;background:#142b2b;margin-top:24px}.practice p{font-size:14px}.after-lesson{display:grid;grid-template-columns:1fr 1fr;gap:24px;margin-top:30px}.checklist,.troubleshooting{background:var(--panel);border:1px solid var(--edge);border-radius:14px;padding:24px}.after-lesson h3{margin-top:0}.checklist label{display:flex;align-items:flex-start;gap:12px;font-size:14px;line-height:1.5;padding:9px 0;cursor:pointer}.checklist input{accent-color:var(--mint);width:20px;height:20px;margin:0;flex-shrink:0}.checklist input:checked+span{text-decoration:line-through;color:var(--muted)}.checklist-status{font-size:13px}.checklist small{display:block;color:var(--muted);line-height:1.5;margin-top:14px}.reset-checklist{margin-top:14px;font-size:13px}details{border-top:1px solid var(--edge);padding:16px 0}summary{font-size:14px;font-weight:650;line-height:1.5;min-height:28px}details p,.troubleshooting>p{font-size:14px}details h3{font-size:15px;margin-top:24px!important}footer{text-align:center;border-top:1px solid var(--edge);padding:32px 20px;color:var(--muted);font-size:12px;line-height:1.8}
@media(max-width:900px){.role-grid{grid-template-columns:repeat(2,1fr)}.lesson-grid{grid-template-columns:1fr}.lesson-heading{display:block}.text-link{display:inline-block;margin-bottom:10px}.hero{padding-top:45px}}
@media(max-width:550px){main{padding:0 18px}.topbar{padding:20px 18px;font-size:12px}.brand span{display:block;margin-top:5px}.role-grid{gap:10px}.role-card{padding:18px}.role-card h3{font-size:18px;margin-top:18px}.role-card p{font-size:13px}.section-heading{align-items:flex-start}.section-heading h2{font-size:22px;margin-top:0}.section-heading>a{font-size:12px;min-width:65px}.after-lesson{grid-template-columns:1fr}.search-row{gap:10px}.search-row label{width:100%}.search-row p{margin:0}.hero-meta{gap:8px}.hero-meta span{font-size:11px}.hero>p:not(.eyebrow){font-size:16px}.lesson-heading h2{font-size:25px}}
@media print{:root{color-scheme:light;color:black;background:white}body{color:black}main{padding:0;max-width:none}.topbar,.hero,#roles,.search-row,video,.downloads,footer,.text-link,.step-heading button,.reset-checklist,.skip-link,.media-note,.video-status{display:none!important}.lesson{break-before:page;border:0;padding:0}.lesson-grid,.after-lesson{display:block}.checklist,.troubleshooting,.prerequisite,.practice{background:white;border:1px solid #888;break-inside:avoid}.steps{margin-top:20px}p,.path,.eyebrow,.lesson-heading .eyebrow span,small,.steps ul{color:#222!important}details{display:block}details>*{display:block}h2{font-size:24px}.lesson.print-hidden{display:none!important}}