:root{--bg:#090909;--panel:#111;--panel-2:#181818;--text:#f5f1e8;--muted:#aaa69e;--line:#2a2926;--accent:#ff5c35;--accent-2:#ffb347;--shadow:0 24px 70px rgba(0,0,0,.38);--radius:22px;--max:1240px;color-scheme:dark}
:root.light{--bg:#f2efe7;--panel:#fffdf8;--panel-2:#e8e3d9;--text:#161512;--muted:#68645c;--line:#d8d1c5;--shadow:0 24px 70px rgba(66,54,31,.13);color-scheme:light}
*{box-sizing:border-box}html{scroll-behavior:smooth;scroll-padding-top:90px}body{margin:0;background:var(--bg);color:var(--text);font-family:Tahoma,"Segoe UI",Arial,sans-serif;line-height:1.8;transition:background .25s,color .25s}button,input{font:inherit}button,a{-webkit-tap-highlight-color:transparent}a{color:inherit;text-decoration:none}.skip-link{position:fixed;top:-80px;right:20px;background:var(--accent);padding:10px 18px;z-index:100;color:#fff}.skip-link:focus{top:12px}.topbar{height:74px;display:flex;align-items:center;justify-content:space-between;padding:0 max(24px,calc((100vw - var(--max))/2));position:sticky;top:0;z-index:20;background:color-mix(in srgb,var(--bg) 82%,transparent);backdrop-filter:blur(18px);border-bottom:1px solid color-mix(in srgb,var(--line) 70%,transparent)}.brand{display:flex;align-items:center;gap:11px;font-family:Arial,sans-serif;font-size:13px;letter-spacing:1.4px;direction:ltr}.brand 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var(--text);opacity:.75}.hero>p{font-size:clamp(16px,1.7vw,21px);color:var(--muted);max-width:660px;margin:0;position:relative;z-index:1}.hero-actions{display:flex;gap:12px;margin-top:34px;position:relative;z-index:2}.button{border-radius:100px;padding:12px 23px;border:1px solid var(--line);cursor:pointer;transition:.2s;display:inline-flex;align-items:center;gap:18px}.button.primary{background:var(--accent);border-color:var(--accent);color:#fff}.button.primary:hover{transform:translateY(-2px);box-shadow:0 8px 30px rgba(255,92,53,.3)}.button.ghost{background:transparent;color:var(--text)}.button.ghost:hover{background:var(--panel)}.hero-stats{display:flex;gap:60px;margin-top:clamp(52px,9vh,95px);position:relative;z-index:1}.hero-stats div{display:flex;flex-direction:column}.hero-stats strong{font-family:Arial,sans-serif;font-size:27px;line-height:1}.hero-stats span{font-size:11px;color:var(--muted);margin-top:8px}.section{max-width:var(--max);margin:auto;padding:110px 24px}.section-head{display:flex;align-items:end;justify-content:space-between;gap:24px;margin-bottom:38px}.section h2{font-size:clamp(32px,4vw,54px);line-height:1.25;letter-spacing:-2px;margin:7px 0 0}.search-box{display:flex;align-items:center;gap:8px;background:var(--panel);border:1px solid var(--line);border-radius:100px;padding:0 17px;min-width:290px}.search-box input{border:0;outline:0;background:transparent;color:var(--text);padding:11px 4px;width:100%}.course-switch{display:flex;gap:8px;border-bottom:1px solid var(--line);margin-bottom:30px;overflow:auto}.course-switch button{white-space:nowrap;background:none;border:0;color:var(--muted);padding:13px 18px;cursor:pointer;border-bottom:2px solid transparent}.course-switch button span{font-size:10px;margin-right:5px;opacity:.7}.course-switch button.active{color:var(--text);border-color:var(--accent)}.course-feature{min-height:300px;background:var(--panel);border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;display:grid;grid-template-columns:1fr 1.12fr;margin-bottom:24px}.feature-visual{min-height:320px;background-size:cover;background-position:center;position:relative}.feature-visual:after{content:"";position:absolute;inset:0;background:linear-gradient(90deg,rgba(0,0,0,.04),rgba(0,0,0,.42))}.feature-badge{position:absolute;bottom:22px;right:22px;z-index:1;background:#fff;color:#111;padding:5px 11px;border-radius:100px;font-size:11px}.feature-copy{padding:clamp(28px,5vw,64px);display:flex;flex-direction:column;justify-content:center}.feature-copy h3{font-size:clamp(28px,3.3vw,45px);line-height:1.3;margin:8px 0 13px}.feature-copy p{color:var(--muted);margin:0 0 25px}.feature-meta{display:flex;gap:24px;font-size:12px;margin-bottom:20px}.progress-track{height:3px;background:var(--line);border-radius:10px;overflow:hidden}.progress-track b{display:block;height:100%;background:var(--accent)}.lesson-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:14px}.lesson-card{background:var(--panel);border:1px solid var(--line);border-radius:16px;padding:22px;min-height:195px;display:flex;flex-direction:column;cursor:pointer;transition:.22s;text-align:right;color:var(--text)}.lesson-card:hover{transform:translateY(-4px);border-color:color-mix(in srgb,var(--accent) 60%,var(--line));box-shadow:var(--shadow)}.lesson-card.done{background:color-mix(in srgb,var(--panel) 90%,var(--accent))}.card-top{display:flex;justify-content:space-between;color:var(--muted);font-size:11px}.card-index{font-family:Arial,sans-serif;letter-spacing:1px}.done-mark{width:22px;height:22px;border-radius:50%;display:grid;place-items:center;border:1px solid var(--line)}.done .done-mark{background:var(--accent);border-color:var(--accent);color:#fff}.lesson-card h3{font-size:18px;line-height:1.55;margin:24px 0 8px}.lesson-card p{font-size:12px;color:var(--muted);margin:0}.card-footer{margin-top:auto;padding-top:18px;color:var(--accent);font-size:11px}.empty-state{text-align:center;color:var(--muted);padding:60px}.learning-path{display:grid;grid-template-columns:.85fr 1.15fr;gap:80px;border-top:1px solid var(--line)}.path-copy p{color:var(--muted);max-width:430px}.path-steps{list-style:none;padding:0;margin:0}.path-steps li{display:flex;gap:22px;align-items:center;border-bottom:1px solid var(--line);padding:22px 0}.path-steps>li>span{font:12px Arial;color:var(--accent)}.path-steps div{display:flex;flex-direction:column}.path-steps b{font-size:18px}.path-steps small{color:var(--muted)}footer{border-top:1px solid var(--line);max-width:var(--max);margin:auto;padding:36px 24px 55px;display:flex;justify-content:space-between;align-items:center;color:var(--muted);font-size:12px}dialog{position:fixed;inset:0;width:100%;height:100%;max-width:none;max-height:none;padding:0;border:0;background:var(--bg);color:var(--text);margin:0}dialog::backdrop{background:rgba(0,0,0,.7)}dialog[open]{animation:dialog-in .3s ease}.dialog-shell{height:100%;display:grid;grid-template-columns:310px minmax(0,1fr);position:relative}.lesson-sidebar{background:var(--panel);border-left:1px solid var(--line);padding:32px 20px;overflow:auto}.sidebar-course{font-size:23px;font-weight:800;line-height:1.4;padding:8px 8px 20px}.sidebar-course small{display:block;color:var(--accent);font-size:10px;margin-bottom:8px}.sidebar-progress{padding:0 8px 24px;font-size:10px;color:var(--muted)}.sidebar-progress i{display:block;height:3px;background:var(--line);margin-top:8px;border-radius:5px;overflow:hidden}.sidebar-progress b{height:100%;display:block;background:var(--accent)}#sidebarLessons{display:flex;flex-direction:column;gap:3px}#sidebarLessons button{border:0;background:transparent;color:var(--muted);text-align:right;padding:10px;border-radius:9px;cursor:pointer;font-size:11px;display:flex;gap:10px}#sidebarLessons button span{font-family:Arial;font-size:9px;padding-top:3px}#sidebarLessons button:hover,#sidebarLessons button.active{background:var(--panel-2);color:var(--text)}.lesson-content{overflow:auto;padding:clamp(50px,7vw,100px) clamp(26px,9vw,130px) 90px;scroll-behavior:smooth}.lesson-inner{max-width:850px;margin:auto}.lesson-breadcrumb{color:var(--accent);font-size:11px}.lesson-content h1{font-size:clamp(38px,6vw,72px);letter-spacing:-2px;line-height:1.16;margin:17px 0 20px}.lesson-lead{font-size:18px;color:var(--muted);max-width:700px}.lesson-media{margin:40px 0;border-radius:18px;overflow:hidden;background:#000;box-shadow:var(--shadow)}.lesson-media video,.lesson-media img{display:block;width:100%;max-height:540px;object-fit:cover}.content-section{padding:30px 0;border-top:1px solid var(--line)}.content-section h2{font-size:25px;margin:0 0 10px;letter-spacing:-.5px}.content-section p{color:var(--muted);margin:0}.takeaways{background:var(--panel);border:1px solid var(--line);border-radius:18px;padding:25px;margin:34px 0}.takeaways h3{margin:0 0 12px;font-size:16px}.takeaways ul{margin:0;padding-right:20px;color:var(--muted)}.takeaways li{margin:7px 0}.lesson-actions{display:flex;justify-content:space-between;gap:12px;margin-top:45px}.lesson-actions button{border:1px solid var(--line);background:var(--panel);color:var(--text);border-radius:100px;padding:11px 19px;cursor:pointer}.lesson-actions .complete{background:var(--accent);border-color:var(--accent);color:#fff}.dialog-close{position:fixed;left:24px;top:22px;width:42px;height:42px;border:1px solid var(--line);background:color-mix(in srgb,var(--panel) 85%,transparent);color:var(--text);border-radius:50%;font-size:25px;cursor:pointer;z-index:3}.mobile-close{display:none;position:static;float:left}.no-scroll{overflow:hidden}@keyframes dialog-in{from{opacity:0;transform:translateY(12px)}to{opacity:1;transform:none}}
@media(max-width:900px){.lesson-grid{grid-template-columns:repeat(2,1fr)}.course-feature{grid-template-columns:1fr}.feature-visual{min-height:280px}.learning-path{grid-template-columns:1fr;gap:35px}.dialog-shell{grid-template-columns:240px minmax(0,1fr)}.lesson-content{padding-inline:40px}.hero:after{width:70vw}}
@media(max-width:640px){.topbar{height:64px;padding:0 16px}.topbar nav{display:none}.brand{font-size:10px}.brand-mark{width:27px;height:27px}.hero{min-height:calc(100svh - 64px);padding:70px 20px 35px;justify-content:flex-start}.hero:after{width:90vw;top:28%}h1{font-size:clamp(48px,16vw,70px);letter-spacing:-3px;margin-top:30px}.hero>p{font-size:15px}.hero-actions{flex-direction:column;align-items:stretch}.button{justify-content:center}.hero-stats{gap:0;justify-content:space-between;margin-top:auto;padding-top:45px}.hero-stats strong{font-size:22px}.section{padding:75px 16px}.section-head{display:block}.search-box{min-width:0;margin-top:22px}.lesson-grid{grid-template-columns:1fr}.course-feature{display:flex;flex-direction:column}.feature-visual{min-height:230px}.feature-copy{padding:27px}.feature-copy h3{font-size:29px}.learning-path{padding-inline:20px}footer{margin:0 16px;padding-inline:0;flex-direction:column;gap:15px;text-align:center}.dialog-shell{display:block}.lesson-sidebar{display:none;position:fixed;inset:0;z-index:4;border:0}.lesson-sidebar.open{display:block}.mobile-close{display:block}.desktop-close{display:block;left:16px;top:14px}.lesson-content{padding:72px 20px 60px}.lesson-content h1{font-size:39px}.lesson-lead{font-size:15px}.lesson-actions{flex-wrap:wrap}.lesson-actions button{flex:1}.course-switch button{padding-inline:12px}}
@media(prefers-reduced-motion:reduce){*{scroll-behavior:auto!important;animation:none!important;transition:none!important}}
.pipeline-grid{display:grid;grid-template-columns:1fr 1fr;gap:14px;margin:25px 0}.pipeline-grid figure,.wide-demo{margin:0;background:var(--panel);border:1px solid var(--line);border-radius:15px;overflow:hidden}.pipeline-grid video,.wide-demo video{display:block;width:100%;background:#000;aspect-ratio:16/9;object-fit:cover}.pipeline-grid figcaption,.wide-demo figcaption{display:flex;flex-direction:column;padding:15px}.pipeline-grid figcaption span,.wide-demo figcaption{font-size:11px;color:var(--muted)}.content-section blockquote{margin:25px 0;padding:16px 20px;border-right:3px solid var(--accent);background:var(--panel);color:var(--text);border-radius:8px}.table-wrap{overflow:auto;margin:22px 0;border:1px solid var(--line);border-radius:13px}table{width:100%;border-collapse:collapse;min-width:620px;font-size:12px}th,td{padding:14px 16px;text-align:right;border-bottom:1px solid var(--line);vertical-align:top}th{background:var(--panel-2);color:var(--text)}td{color:var(--muted)}td b{color:var(--text)}code{direction:ltr;unicode-bidi:embed;font-family:Consolas,monospace;background:var(--panel-2);padding:2px 5px;border-radius:5px;color:var(--accent-2)}.info-grid,.file-types{display:grid;grid-template-columns:repeat(2,1fr);gap:12px;margin:22px 0}.info-grid>div,.file-types>div{background:var(--panel);border:1px solid var(--line);border-radius:13px;padding:19px}.info-grid p,.file-types p{font-size:12px;margin-top:6px}.file-types{grid-template-columns:repeat(3,1fr)}.file-types>div>span{font:10px Arial;color:var(--accent);letter-spacing:1px}.file-types h3{margin:7px 0}.wide-demo{margin:24px 0}.code-example{direction:ltr;text-align:left;background:#070707;border:1px solid #292929;border-radius:13px;overflow:hidden;margin:18px 0}.code-example>div{display:flex;justify-content:space-between;align-items:center;padding:9px 13px;border-bottom:1px solid #292929;color:#aaa;font:11px Arial}.code-example button{border:0;background:transparent;color:#ff8b6e;cursor:pointer}.code-example pre{margin:0;padding:18px;overflow:auto;white-space:pre-wrap;color:#e8e5de;line-height:1.65}.code-example pre code{background:none;padding:0;color:inherit;unicode-bidi:normal}.source-link{display:inline-flex;margin-top:20px;color:var(--accent);font-size:12px;border-bottom:1px solid currentColor}@media(max-width:640px){.pipeline-grid,.info-grid,.file-types{grid-template-columns:1fr}.table-wrap{margin-inline:-4px}.code-example pre{font-size:11px}}
.friendly-list{margin:18px 0;padding-right:22px;color:var(--muted)}.friendly-list li{margin:8px 0;padding-right:4px}