*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
:root{--border-color:var(--line);--card-bg:var(--surface);--bg:#f6ecd9;--surface:#fbf3e2;--surface2:#e7d3ae;--line:#4a3627;--text:#6b543f;--head:#7a4a2b;--muted:#765b43;--soft2:#d0b58a;--accent:#a94f35}
html.dark{--bg:#1e1811;--surface:#2a2219;--surface2:#382d20;--line:#7a6449;--text:#e6d5b8;--head:#f8cf90;--muted:#c4ab89;--soft2:#0f0b06;--accent:#ef8a5f}
body{min-width:0;background:var(--bg);color:var(--text);font-family:"Space Mono",monospace;transition:background-color .2s,color .2s}
a{color:var(--accent);text-decoration:none}
a:hover{color:var(--head)}
a:focus-visible,button:focus-visible,summary:focus-visible,[tabindex]:focus-visible{outline:3px solid var(--accent);outline-offset:3px}
::selection{background:var(--accent);color:#fff}
.navlink{color:var(--text);font-size:20px}
.navlink:hover{color:var(--head)}
.learning-main{width:100%;min-width:0}
.learning-crumbs{display:flex;align-items:center;gap:8px;max-width:1120px;margin:0 auto;padding:24px 32px 10px;font:15px/1.4 "Share Tech Mono",monospace;color:var(--muted);overflow-wrap:anywhere}
.learning-crumbs span{opacity:.65}
.learning-shell{max-width:1120px;margin:0 auto;padding:12px 32px 72px}
.lesson-topline{display:flex;align-items:center;justify-content:space-between;gap:18px;margin-bottom:20px}
.lesson-counter{font:14px/1.2 "Press Start 2P",monospace;color:var(--head)}
.lesson-progress{flex:1;max-width:280px;height:12px;padding:2px;background:var(--surface);border:2px solid var(--line)}
.lesson-progress>span{display:block;height:100%;background:repeating-linear-gradient(90deg,var(--accent) 0 9px,transparent 9px 11px)}
.lesson-wrapper{max-width:100%}
.lesson-header{padding-bottom:26px;margin-bottom:30px;border-bottom:3px solid var(--line)}
.lesson-header .badge{display:inline-block;margin-bottom:18px;padding:8px 12px;background:var(--accent);color:#fff;font:9px/1.45 "Press Start 2P",monospace}
html.dark .lesson-header .badge{color:#1e1811}
.lesson-header h1{margin-bottom:14px;color:var(--head);font:24px/1.5 "Press Start 2P",monospace;text-shadow:3px 3px 0 var(--surface2);overflow-wrap:anywhere}
.lesson-header>p{max-width:780px;color:var(--text);font:17px/1.65 "Space Mono",monospace}
.video-card{display:inline-flex;align-items:center;gap:14px;margin-top:22px;padding:14px 18px;background:var(--surface);border:3px solid var(--line);box-shadow:4px 4px 0 var(--surface2)}
.video-card:hover{transform:translate(-2px,-2px);box-shadow:6px 6px 0 var(--surface2)}
.video-icon{font-size:26px}
.video-text{display:flex;flex-direction:column;line-height:1.25}
.video-text strong{color:var(--head);font:10px/1.5 "Press Start 2P",monospace}
.video-text span{color:var(--muted);font-size:18px}
.lesson-layout{display:grid;grid-template-columns:230px minmax(0,1fr);gap:36px;align-items:start}
.lesson-toc,.mobile-toc{position:sticky;top:86px;padding:20px;background:var(--surface);border:3px solid var(--line);box-shadow:5px 5px 0 var(--surface2)}
.lesson-toc h2,.mobile-toc summary{margin-bottom:14px;color:var(--head);font:10px/1.5 "Press Start 2P",monospace}
.lesson-toc ul,.mobile-toc ul{list-style:none;margin:0}
.lesson-toc li,.mobile-toc li{margin:0 0 9px}
.lesson-toc a,.mobile-toc a{display:block;color:var(--text);font:15px/1.6 "Space Mono",monospace}
.lesson-toc a:hover,.lesson-toc a[aria-current="true"],.mobile-toc a:hover{color:var(--accent)}
.course-content,.lesson-layout>div{min-width:0;max-width:100%;overflow-wrap:anywhere}
.lesson-section{margin-bottom:38px;padding-bottom:8px;scroll-margin-top:94px}
.lesson-section>h2{margin:0 0 18px;padding-top:8px;color:var(--head);font:15px/1.55 "Press Start 2P",monospace;overflow-wrap:anywhere}
.lesson-section h3{margin:22px 0 10px;color:var(--accent);font:700 19px/1.45 "Share Tech Mono",monospace}
.lesson-section h4{margin:16px 0 8px;color:var(--head);font:17px/1.45 "Share Tech Mono",monospace}
.lesson-wrapper p{margin-bottom:15px;color:var(--text);font:16px/1.8 "Space Mono",monospace}
.lesson-wrapper ul,.lesson-wrapper ol{margin:0 0 16px 26px}
.lesson-wrapper li{margin-bottom:9px;color:var(--text);font:15.5px/1.75 "Space Mono",monospace}
.lesson-wrapper p,.lesson-wrapper li,.lesson-wrapper td,.lesson-wrapper th,.lesson-wrapper a{overflow-wrap:anywhere}
.lesson-wrapper code{padding:1px 6px;background:var(--surface2);border:1px solid var(--line);color:var(--head);font:16px/1.5 "Share Tech Mono",monospace;white-space:pre-wrap;overflow-wrap:break-word;-webkit-box-decoration-break:clone;box-decoration-break:clone}
.codewrap{position:relative}
.lesson-wrapper pre{max-width:100%;margin:14px 0;padding:18px;overflow:auto;background:#12100b;border:3px solid var(--line);box-shadow:4px 4px 0 var(--surface2);-webkit-overflow-scrolling:touch}
.lesson-wrapper pre code{display:block;padding:0;background:none;border:0;color:#ddd0b4;line-height:1.6;white-space:pre}
.copybtn{position:absolute;top:8px;right:8px;padding:5px 10px;background:var(--surface2);border:2px solid var(--line);color:var(--head);font:13px/1.2 "Share Tech Mono",monospace;cursor:pointer}
.lesson-wrapper img{display:block;width:100%;max-width:100%;height:auto;margin:22px 0;background:#12100b;border:3px solid var(--line);box-shadow:5px 5px 0 var(--surface2);cursor:zoom-in}
.lesson-wrapper table{display:block;width:max-content;max-width:100%;margin:18px 0;overflow-x:auto;border:3px solid var(--line);border-collapse:collapse;font-size:18px;-webkit-overflow-scrolling:touch}
.lesson-wrapper th{padding:12px 14px;background:var(--surface2);border-bottom:3px solid var(--line);color:var(--head);text-align:left;font-family:"Share Tech Mono",monospace}
.lesson-wrapper td{padding:12px 14px;border-bottom:2px solid var(--surface2);color:var(--text);vertical-align:top;font-family:"Space Mono",monospace}
.info-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(150px,1fr));gap:12px;margin:14px 0}
.info-item{padding:16px;background:var(--surface);border:3px solid var(--line);box-shadow:4px 4px 0 var(--surface2);color:var(--text);font-size:17px;line-height:1.35}
.info-item strong{color:var(--head);font-family:"Share Tech Mono",monospace}
.lesson-alert{margin:18px 0;padding:16px 18px;background:var(--surface);border:3px solid var(--line);border-left:8px solid var(--accent)!important;color:var(--text);font-size:19px}
.lesson-navigation{display:grid;grid-template-columns:1fr auto 1fr;gap:18px;margin-top:42px;padding-top:28px;border-top:3px solid var(--line)}
.lesson-nav-card{display:flex;min-width:0;flex-direction:column;gap:7px;padding:16px;background:var(--surface);border:3px solid var(--line);box-shadow:4px 4px 0 var(--surface2)}
.lesson-nav-card.next{text-align:right}
.lesson-nav-card small{color:var(--muted);font:12px/1.2 "Press Start 2P",monospace}
.lesson-nav-card strong{color:var(--head);font:17px/1.35 "Share Tech Mono",monospace;overflow-wrap:anywhere}
.lesson-read{align-self:center;padding:13px 16px;background:var(--surface);border:3px solid var(--line);box-shadow:4px 4px 0 var(--surface2);color:var(--head);font:9px/1.35 "Press Start 2P",monospace;cursor:pointer}
.lesson-read[data-read="true"]{background:#557c3f;color:#fff}
.course-hero{padding:20px 0 28px;border-bottom:3px solid var(--line)}
.course-kicker{margin-bottom:14px;color:var(--accent);font:10px/1.4 "Press Start 2P",monospace}
.course-hero h1{margin-bottom:14px;color:var(--head);font:28px/1.5 "Press Start 2P",monospace;text-shadow:4px 4px 0 var(--surface2)}
.course-hero p{max-width:780px;color:var(--text);font-size:23px;line-height:1.35}
.course-stats{display:flex;gap:12px;flex-wrap:wrap;margin-top:22px}
.course-stat{padding:8px 12px;background:var(--surface);border:2px solid var(--line);color:var(--head);font:14px/1.2 "Share Tech Mono",monospace}
.module-list{display:grid;grid-template-columns:minmax(0,1fr);margin-top:28px;border:3px solid var(--line);box-shadow:6px 6px 0 var(--surface2);background:var(--surface)}
.module-row{display:grid;grid-template-columns:58px minmax(0,1fr) auto;align-items:center;gap:18px;min-width:0;padding:19px 22px;color:var(--text);border-bottom:2px solid var(--surface2);transition:background .12s,box-shadow .12s}
.module-row:last-child{border-bottom:0}
a.module-row:hover{background:var(--bg);box-shadow:inset 6px 0 0 var(--accent)}
.module-index{color:var(--muted);font:19px/1 "Share Tech Mono",monospace;text-align:center}
.module-copy{display:grid;gap:6px;min-width:0}
.module-number{color:var(--accent);font:9px/1.4 "Press Start 2P",monospace}
.module-title{color:var(--head);font:14px/1.55 "Press Start 2P",monospace;overflow-wrap:anywhere}
.module-description{color:var(--text);font:15px/1.65 "Space Mono",monospace}
.module-topics{color:var(--muted);font:14px/1.35 "Share Tech Mono",monospace}
.module-state{color:var(--accent);font:9px/1.4 "Press Start 2P",monospace;white-space:nowrap}
.module-row.coming{opacity:.72}
.lesson-section-meter{position:fixed;top:0;left:0;z-index:1000;width:0;height:3px;background:var(--accent)}
#backtop{position:fixed;right:18px;bottom:18px;z-index:90;display:none;width:44px;height:44px;background:var(--surface);border:3px solid var(--line);box-shadow:3px 3px 0 var(--line);color:var(--head);font-size:20px;cursor:pointer}
#backtop.show{display:block}
#img-lightbox{position:fixed;inset:0;z-index:9999;display:none;align-items:center;justify-content:center;padding:24px;background:rgba(18,16,11,.92);cursor:zoom-out}
#img-lightbox.open{display:flex}
#img-lightbox img{max-width:95vw;max-height:92vh;background:#fff;border:3px solid var(--line);box-shadow:8px 8px 0 #000}
#img-lightbox button{position:absolute;top:18px;right:22px;background:none;border:0;color:#f6ecd9;font:16px/1 "Press Start 2P",monospace;cursor:pointer}
.pxbtn:active,.lesson-read:active{transform:translate(3px,3px);box-shadow:1px 1px 0 var(--line)!important}
@media(max-width:820px){
  .lesson-layout{grid-template-columns:1fr;gap:24px}
  .lesson-toc,.mobile-toc{position:static}
  .lesson-navigation{grid-template-columns:1fr 1fr}
  .lesson-read{grid-column:1/3;grid-row:1}
}
@media(max-width:640px){
  .learning-crumbs{padding:18px 16px 8px;font-size:13px;flex-wrap:wrap}
  .learning-shell{padding:10px 16px 50px}
  .lesson-topline{align-items:flex-start;flex-direction:column}
  .lesson-progress{width:100%;max-width:none}
  .lesson-header h1,.course-hero h1{font-size:18px;line-height:1.65;text-shadow:3px 3px 0 var(--surface2)}
  .lesson-header>p{font-size:14px}
  .video-card{width:100%;align-items:flex-start}
  .video-text strong{font-size:8px}
  .lesson-section>h2{font-size:12px}
  .lesson-wrapper p{font-size:14px}
  .lesson-wrapper li{font-size:14px}
  .lesson-navigation{grid-template-columns:1fr}
  .lesson-nav-card.next{text-align:left}
  .lesson-read{grid-column:1;grid-row:auto}
  .course-hero p{font-size:20px}
  .module-list{box-shadow:4px 4px 0 var(--surface2)}
  .module-row{grid-template-columns:34px minmax(0,1fr);gap:11px;padding:16px 12px}
  .module-index{font-size:15px}
  .module-title{font-size:11px;line-height:1.55}
  .module-description{font-size:16px}
  .module-topics{font-size:12px}
  .module-state{grid-column:2;margin-top:2px;font-size:8px}
}
@media(prefers-reduced-motion:reduce){*,*::before,*::after{scroll-behavior:auto!important;animation-duration:.001ms!important;transition-duration:.001ms!important}}
.youtube-facade{cursor:pointer;position:relative}
.youtube-facade::after{content:'▶';display:inline-grid;place-items:center;margin-inline-start:.75rem;width:2.5rem;height:2.5rem;border-radius:50%;background:#c00;color:#fff}
.youtube-facade:focus-visible{outline:3px solid currentColor;outline-offset:4px}
.youtube-embed{display:block;width:100%;aspect-ratio:16/9;border:0;border-radius:1rem;background:#000}
.lesson-progress .lesson-progress-cka00{width:2.857142857142857%}